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// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* @notice Allows each token to be associated with a creator.
*/
contract Participants is Ownable {
mapping(address => uint256) public seed;
mapping(address => uint256) public private1;
mapping(address => uint256) public private2;
constructor() {
// ****** For tests only - Should be comment in deploy ******
// seed[0x70997970C51812dc3A010C7d01b50e0d17dc79C8] = 625000000000000000000000; // 625000 DDAO | $ 100000
// private1[0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC] = 31250000000000000000000; // 31250 DDAO | $ 10000
// private2[0x90F79bf6EB2c4f870365E785982E1f101E93b906] = 2170212765957400000000; // 2170.2127659574 DDAO | $ 1020
// ****** For tests only ^^^ ******
seed[0xECCFbC5B04Da35D611EF8b51099fA5Bc6639d73b] = 625000000000000000000000; // 625000 DDAO | $ 100000
seed[0x7777420DD0E5f0E13D51C831f77495a057aaBBBB] = 332500000000000000000000; // 332500 DDAO | $ 53200
seed[0xEB2d2F1b8c558a40207669291Fda468E50c8A0bB] = 312500000000000000000000; // 312500 DDAO | $ 50000
seed[0x8595f8141E90fcf6Ee17C85142Fd03d3138A6198] = 312500000000000000000000; // 312500 DDAO | $ 50000
seed[0xCf57A3b1C076838116731FDe404492D9d168747A] = 312500000000000000000000; // 312500 DDAO | $ 50000
seed[0x07587c046d4d4BD97C2d64EDBfAB1c1fE28A10E5] = 312500000000000000000000; // 312500 DDAO | $ 50000
seed[0x5555DADcb41fB48934b02A0DBF793b97541F7777] = 312500000000000000000000; // 312500 DDAO | $ 50000
private1[0x0026Ec57900Be57503Efda250328507156dAC982] = 93750000000000000000000; // 93750 DDAO | $ 30000
private1[0xd53b873683Df491553eea6a069770144Ad30F3A9] = 93750000000000000000000; // 93750 DDAO | $ 30000
private1[0x7701E5Bf2D8aE221f23F460FE73420eeE86d2872] = 78125000000000000000000; // 78125 DDAO | $ 25000
private1[0x1A72CCE42499361FFF103855F845B8cFc1c25b67] = 62500000000000000000000; // 62500 DDAO | $ 20000
private1[0x1b9E791f3259dcEF7D1e366b33F644841c2461a5] = 62500000000000000000000; // 62500 DDAO | $ 20000
private1[0x4E560A3ecfe9E5386E727c76f6e2690aE7a1Bc82] = 58437500000000000000000; // 58437.5 DDAO | $ 18700
private1[0xCeeA2d354c6357ed7e10e629bd2734119A5B3c21] = 48351171684062000000000; // 48351.171684062 DDAO | $ 15472.3749389
private1[0x98BCE99aa50CB33eca0dDcb2a04404B80dEd3F3E] = 46875000000000000000000; // 46875 DDAO | $ 15000
private1[0xeE74a1e81B6C55e3D02D05D7CaE9FD6BCee0E651] = 39062500000000000000000; // 39062.5 DDAO | $ 12500
private1[0x9f8eF2849133286860A8216cA11359381706Fa4a] = 37500000000000000000000; // 37500 DDAO | $ 12000
private1[0x8D88F01D183DDfD30782E565fdBcD85c14413cAF] = 34375000000000000000000; // 34375 DDAO | $ 11000
private1[0xB862D5e30DE97368801bDC24A53aD90F56a9C068] = 33021339193750000000000; // 33021.33919375 DDAO | $ 10566.828542
private1[0x4F9ef189F387e0a91d46812cFB2ecE0d558a471C] = 31562500000000000000000; // 31562.5 DDAO | $ 10100
private1[0x79e5c907b9d4Af5840C687e6975a1C530895454a] = 31318750000000000000000; // 31318.75 DDAO | $ 10022
private1[0xFB81414570E338E28C98417c38A3A5c9C6503516] = 31253125000000000000000; // 31253.125 DDAO | $ 10001
private1[0x35e55F287EFA64dAb88A289a32F9e5942Ab28b18] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0xda7B5C50874a82C0262b4eA6e6001E2b002829E9] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x7Ed273A361D6bb16833f0E563C313e205738112f] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x3cB704A5FB4428796b728DF7e4CbC67BCA1497Ae] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0xEc8c50223E785C3Ff21fd9F9ABafAcfB1e2215FC] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x871cAEF9d39e05f76A3F6A3Bb7690168f0188925] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0xbE20DFb456b7E81f691A8445d073e56602E3cefa] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x710A169B822Bf51b8F8E6538c63deD200932BB29] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x6Fa98A4254c7E9Ec681cCeb3Cb8D64a70Dbea256] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x524b7c9B4cA33ba72445DFd2d6404C81d8D1F2E3] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x92fc7C69AD976e188b004Cd60Cbd0C8448c770bA] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x32f8E5d3F4039d1DF89B6A1e544288289A500Fd1] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x256b09f7Ae7d5fec8C8ac77184CA09F867BbBf4c] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0xC9D15F4E6f1b37CbF0E8068Ff84B5282edEF9707] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x8ad686fB89b2944B083C900ec5dDCd2bB02af1D0] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0xe1C69F432f2Ba9eEb33ab4bDd23BD417cb89886a] = 31250000000000000000000; // 31250 DDAO | $ 10000
private1[0x355e03d40211cc6b6D18ce52278e91566fF29839] = 31250000000000000000000; // 31250 DDAO | $ 10000
private2[0x4F80d10339CdA1EDc936e15E7066C1DBbd8Eb01F] = 15782000000000000000000; // 15782 DDAO | $ 7417.54
private2[0x4959769500C751f32FEa39012b5244C722c643Dd] = 10667532039798000000000; // 10667.532039798 DDAO | $ 5013.7400587051
private2[0x89BFc312583bE9a9E518928F24eBdc03270C7375] = 10648936170213000000000; // 10648.936170213 DDAO | $ 5005
private2[0x4d35B59A3C1F59D5fF94dD7B2b3A1198378c4678] = 10639598053191000000000; // 10639.598053191 DDAO | $ 5000.611085
private2[0xa73eAf66656270Cc2b27304a170a3ACbd666B54B] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0xb647f84d4DC1C9bD9Bf42BfFe0FEA69C9F2bb843] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0x33Ad49856da25b8E2E2D762c411AEda0D1727918] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0x420ACe7D85821A887891A43CC8a2aFE0D84433a9] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0x3A484fc4E7873Bd79D0B9B05ED6067A549eC9f49] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0x7AE29F334D7cb67b58df5aE2A19F360F1Fd3bE75] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0xd09153823Cf2f29ed6B7E959739bca97C1D273B8] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0xDE92728804683EC03EFAF6C293e428fc72C2ec95] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0x3A79caC51e770a84E8Cb5155AAafAA9CaC83F429] = 10638297872340000000000; // 10638.29787234 DDAO | $ 5000
private2[0x5A20ab4F35Dba889D1f6244c0D53A153DCd28766] = 9444461942553200000000; // 9444.4619425532 DDAO | $ 4438.897113
private2[0x79440849d5BA6Df5fb1F45Ff36BE3979F4271fa4] = 7518148665957400000000; // 7518.1486659574 DDAO | $ 3533.529873
private2[0xbD0Ad704f38AfebbCb4BA891389938D4177A8A92] = 7446808510638300000000; // 7446.8085106383 DDAO | $ 3500
private2[0x21130c9b9D00BcB6cDAF24d0E85809cf96251F35] = 6489361702127700000000; // 6489.3617021277 DDAO | $ 3050
private2[0x42A6396437eBA7bFD6B5195B7134BE64443521ed] = 6412765957446800000000; // 6412.7659574468 DDAO | $ 3014
private2[0xC3aB2C2Eb604F159C842D9cAdaBBa2d6254c43d5] = 6389361702127700000000; // 6389.3617021277 DDAO | $ 3003
private2[0x5D10100d130467cf8DBE2B904100141F1a63318F] = 6382978723404300000000; // 6382.9787234043 DDAO | $ 3000
private2[0x585a003aA0b446C0F9baD7b3b0BAc5A809988588] = 6382978723404300000000; // 6382.9787234043 DDAO | $ 3000
private2[0x125EaE40D9898610C926bb5fcEE9529D9ac885aF] = 6382978723404300000000; // 6382.9787234043 DDAO | $ 3000
private2[0x24f39151D6d8A9574D1DAC49a44F1263999D0dda] = 5319148936170200000000; // 5319.1489361702 DDAO | $ 2500
private2[0xe6BB1bEBF6829ca5240A80F7076E4CFD6Ee540ae] = 5276595744680900000000; // 5276.5957446809 DDAO | $ 2480
private2[0xf3143D244F33eb40252464d3b692FA519847B7a9] = 4851063829787200000000; // 4851.0638297872 DDAO | $ 2280
private2[0x764108BAcf10e30F6f249d17E7612fB9008923F0] = 4851063829787200000000; // 4851.0638297872 DDAO | $ 2280
private2[0xF6d670C5C0B206f44E93dE811054F8C0b6e15905] = 4289361702127700000000; // 4289.3617021277 DDAO | $ 2016
private2[0x73073A915f8a582B061091368486fECA640552BA] = 4274680851063800000000; // 4274.6808510638 DDAO | $ 2009.1
private2[0xa66a4b8461e4786C265B7AbD1F5dfdb6e487f809] = 4256595744680900000000; // 4256.5957446809 DDAO | $ 2000.6
private2[0x07b449319D200b1189406c58967348c5bA0D4083] = 4256457456721200000000; // 4256.4574567212 DDAO | $ 2000.5350046589
private2[0x15c5F3a14d4492b1a26f4c6557251a6F247a2Dd5] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0x7eE33a8939C6e08cfE207519e220456CB770b982] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0x2aE024C5EE8dA720b9A51F50D53a291aca37dEb1] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0x0f5A11bEc9B124e73F51186042f4516F924353e0] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0x2230A3fa220B0234E468a52389272d239CEB809d] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0x65028EEE0F81E76A8Ffc39721eD4c18643cB9A4C] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0x931ddC55Ea7074a190ded7429E82dfAdFeDC0269] = 4255319148936200000000; // 4255.3191489362 DDAO | $ 2000
private2[0xB6a95916221Abef28339594161cd154Bc650c515] = 3765957446808500000000; // 3765.9574468085 DDAO | $ 1770
private2[0x093E088901909dEecC1b4a1479fBcCE1FBEd31E7] = 3617021276595700000000; // 3617.0212765957 DDAO | $ 1700
private2[0xb521154e8f8978f64567FE0FA7359Ab47f7363fA] = 3287234042553200000000; // 3287.2340425532 DDAO | $ 1545
private2[0x9867EBde73BD54d2D7e55E28057A5Fe3bd2027b6] = 3272787242553200000000; // 3272.7872425532 DDAO | $ 1538.210004
private2[0x4D3c3E7F5EBae3aCBac78EfF2457a842Ab86577e] = 3251063829787200000000; // 3251.0638297872 DDAO | $ 1528
private2[0x522b76c8f7764009178B3Fd89bBB0134ADEC44a8] = 3202645110425500000000; // 3202.6451104255 DDAO | $ 1505.2432019
private2[0x882bBB07991c5c2f65988fd077CdDF405FE5b56f] = 3192340425531900000000; // 3192.3404255319 DDAO | $ 1500.4
private2[0x0c2262b636d91Ec5582f4F95b40988a56496B8f1] = 3191489361702100000000; // 3191.4893617021 DDAO | $ 1500
private2[0x57dA448673AfB7a06150Ab7a92c7572e7c75D2E5] = 3191489361702100000000; // 3191.4893617021 DDAO | $ 1500
private2[0x68cf193fFE134aD92C1DB0267d2062D01FEFDD06] = 3191489361702100000000; // 3191.4893617021 DDAO | $ 1500
private2[0x35205135F0883e6a59aF9cb64310c53003433122] = 3191489361702100000000; // 3191.4893617021 DDAO | $ 1500
private2[0xA368bae3df1107cF22Daf0a79761EF94656D789A] = 3159574468085100000000; // 3159.5744680851 DDAO | $ 1485
private2[0xA31B0BE89D0bcDF35B39682b652bEb8390A8F2Dc] = 2913791265957400000000; // 2913.7912659574 DDAO | $ 1369.481895
private2[0x9F74e07D01c8eE7D1b4B0e9739c8c75E8c23Ef4b] = 2872340425531900000000; // 2872.3404255319 DDAO | $ 1350
private2[0xA7a9544D86066BF583be602195536918497b1fFf] = 2765957446808500000000; // 2765.9574468085 DDAO | $ 1300
private2[0x64F8eF34aC5Dc26410f2A1A0e2b4641189040231] = 2600000000000000000000; // 2600 DDAO | $ 1222
private2[0xE088efbff6aA52f679F76F33924C61F2D79FF8E2] = 2553191489361700000000; // 2553.1914893617 DDAO | $ 1200
private2[0xD0929C7f44AB8cda86502baaf9961527fC856DDC] = 2515989780989700000000; // 2515.9897809897 DDAO | $ 1182.5151970652
private2[0x6592aB22faD2d91c01cCB4429F11022E2595C401] = 2511826170212800000000; // 2511.8261702128 DDAO | $ 1180.5583
private2[0x07E8cd40Be6DD430a8B70E990D6aF7Cd2c5fD52c] = 2476687060085100000000; // 2476.6870600851 DDAO | $ 1164.04291824
private2[0x875Bf94C16000710f721Cf453B948f23B7394ec2] = 2345194139228500000000; // 2345.1941392285 DDAO | $ 1102.2412454374
private2[0x1bdaA24527F033ABBe9Bc51b63C0F2a3e913485b] = 2340425531914900000000; // 2340.4255319149 DDAO | $ 1100
private2[0x687922176D1BbcBcdC295E121BcCaA45A1f40fCd] = 2340425531914900000000; // 2340.4255319149 DDAO | $ 1100
private2[0x2CE83785eD44961959bf5251e85af897Ba9ddAC7] = 2319702504255300000000; // 2319.7025042553 DDAO | $ 1090.260177
private2[0xCDCaDF2195c1376f59808028eA21630B361Ba9b8] = 2310638297872300000000; // 2310.6382978723 DDAO | $ 1086
private2[0x7Ff698e124d1D14E6d836aF4dA0Ae448c8FfFa6F] = 2302934836170200000000; // 2302.9348361702 DDAO | $ 1082.379373
private2[0x11f53fdAb3054a5cA63778659263aF0838b642b1] = 2234042553191500000000; // 2234.0425531915 DDAO | $ 1050
private2[0x9f8eF2849133286860A8216cA11359381706Fa4a] = 2234042553191500000000; // 2234.0425531915 DDAO | $ 1050
private2[0x826121D2a47c9D6e71Fd4FED082CECCc8A5381b1] = 2202127659574500000000; // 2202.1276595745 DDAO | $ 1035
private2[0x674901AdeB413C126a069402E751ba80F2e2152e] = 2201778444129100000000; // 2201.7784441291 DDAO | $ 1034.8358687407
private2[0x228Bb6C83e8d0767eD342dd333DDbD55Ad217a3D] = 2191489361702100000000; // 2191.4893617021 DDAO | $ 1030
private2[0xB248B3309e31Ca924449fd2dbe21862E9f1accf5] = 2172669850608700000000; // 2172.6698506087 DDAO | $ 1021.1548297861
private2[0xb14ae50038abBd0F5B38b93F4384e4aFE83b9350] = 2170212765957400000000; // 2170.2127659574 DDAO | $ 1020
private2[0x795e43E9e2423620dA9107F2a5088e039F9A0112] = 2167234042553200000000; // 2167.2340425532 DDAO | $ 1018.6
private2[0x86649d0a9cAf37b51E33b04d89d4BF63dd696fE6] = 2159574468085100000000; // 2159.5744680851 DDAO | $ 1015
private2[0x8a382bb6BF2008492268DEdC549B6Cf189a067B5] = 2143092963829800000000; // 2143.0929638298 DDAO | $ 1007.253693
private2[0x687cEE1e9B4E2a33A63C5319fe6D5DbBaa8d5E91] = 2142553191489400000000; // 2142.5531914894 DDAO | $ 1007
private2[0x390b07DC402DcFD54D5113C8f85d90329A0141ef] = 2129787234042600000000; // 2129.7872340426 DDAO | $ 1001
private2[0x0aa05378529F2D1707a0B196B846d7963d677d37] = 2129787234042600000000; // 2129.7872340426 DDAO | $ 1001
private2[0x8c1203dfC78068b0Fa5d7a2dD2a2fF9cFA89fFcE] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xee86f2BAFC7e33EFDD5cf3970e33C361Cb7aDeD9] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x0be82Fe1422d6D5cA74fd73A37a6C89636235B25] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xF33782f1384a931A3e66650c3741FCC279a838fC] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xD878a0a545dCC7751Caf6d796c0267C202A957Db] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x7A4Ad79C4EACe6db85a86a9Fa71EEBD9bbA17Af2] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x32527CA6ec2B85AbaCA0fb2dd3878e5b7Bb5b370] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x35E3c412286d59Af71ba5836cE6017E416ACf8BC] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xDc6c3d081691f7ef4ae25f488098aD0350052D43] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xfA79F7c2601a4C2A40C80eC10cE0667988B0FC36] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xD24596a11337129A939ba11034912B7D55262b46] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x5748c8EE8F7Fe23D14096E51Ca0fb3Cb63223643] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xe2D18861c892f4eFbaB6b2749e2eDe16aF458A94] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x7F052861bf21f5208e7C0e30C9056a79E8314bA9] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xA9786dA5d3ABb6C404b79DF28b7f402E58eF7c5B] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xaF997affb94c5Ca556b28b024E162AA3164f4A43] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x55fb5D5ae4A4F8369209fEf691587d40227166F6] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xf98de1A22d715A88C2A33821917e8ce2e5583D5A] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x6F15FA9582FdCF84f9F12D32F1C850775fD033eE] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x6F255406306D6D78e97a29F7f249f6d2d85d9801] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x2fb0d4F09e5F7E399354D8DbF602c871b84c081F] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x6B745dEfEE931Ee790DFe5333446eF454c45D8Cf] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x94d3B13745c23fB57a9634Db0b6e4f0d8b5a1053] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0x498E96c727700a6B7aC2c4EfBd3E9a5DA4F0d137] = 2127659574468100000000; // 2127.6595744681 DDAO | $ 1000
private2[0xB7c3A0928c06A80DC4A4CDc9dC0aec33E047A4c8] = 1063829787234000000000; // 1063.829787234 DDAO | $ 500
private2[0x627C125475d70bbB7eb138bd243851824c0865a1] = 53191000000000000000000; // 53191 DDAO
// Team https://polygonscan.com/address/0x2E7bEC36f8642Cc3df83C19470bE089A5FAF98Fa#code
private2[0x2E7bEC36f8642Cc3df83C19470bE089A5FAF98Fa] = 1680000000000000000000000; // 1680000 DDAO
}
}
|
31250 DDAO | $ 10000
|
private1[0x256b09f7Ae7d5fec8C8ac77184CA09F867BbBf4c] = 31250000000000000000000;
| 13,044,172 |
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] |
./full_match/8453/0x5Ba641A1Fa1E6A7D033c9f6A8108d52B92b78257/sources/contracts/HATVault.sol
|
solhint-disable-next-line not-rely-on-time
|
activeClaim.challengedAt = uint32(block.timestamp);
| 11,548,729 |
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./full_match/3/0x0BdC4B7aD1be88EeAe48C1F110893626437edbb9/sources/merkle-distributor.sol
|
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. These functions can be used to verify that a message was signed by the holder of the private keys of a given address./
|
library ECDSA {
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
bytes32 s;
uint8 v;
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
revert("ECDSA: invalid signature 's' value");
}
if (v != 27 && v != 28) {
revert("ECDSA: invalid signature 'v' value");
}
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
bytes32 s;
uint8 v;
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
revert("ECDSA: invalid signature 's' value");
}
if (v != 27 && v != 28) {
revert("ECDSA: invalid signature 'v' value");
}
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
bytes32 r;
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
bytes32 s;
uint8 v;
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
revert("ECDSA: invalid signature 's' value");
}
if (v != 27 && v != 28) {
revert("ECDSA: invalid signature 'v' value");
}
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
bytes32 s;
uint8 v;
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
revert("ECDSA: invalid signature 's' value");
}
if (v != 27 && v != 28) {
revert("ECDSA: invalid signature 'v' value");
}
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
bytes32 s;
uint8 v;
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
revert("ECDSA: invalid signature 's' value");
}
if (v != 27 && v != 28) {
revert("ECDSA: invalid signature 'v' value");
}
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
address signer = ecrecover(hash, v, r, s);
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
}
| 8,233,133 |
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pragma solidity ^0.4.23;
library StringUtils {
struct slice {
uint _len;
uint _ptr;
}
/*
* @dev Returns a slice containing the entire string.
* @param self The string to make a slice from.
* @return A newly allocated slice containing the entire string.
*/
function toSlice(string self) internal pure returns (slice) {
uint ptr;
assembly {
ptr := add(self, 0x20)
}
return slice(bytes(self).length, ptr);
}
/*
* @dev Returns a new slice containing the same data as the current slice.
* @param self The slice to copy.
* @return A new slice containing the same data as `self`.
*/
function copy(slice self) internal pure returns (slice) {
return slice(self._len, self._ptr);
}
/*
* @dev Copies a slice to a new string.
* @param self The slice to copy.
* @return A newly allocated string containing the slice's text.
*/
function toString(slice self) internal pure returns (string) {
string memory ret = new string(self._len);
uint retptr;
assembly { retptr := add(ret, 32) }
memcpy(retptr, self._ptr, self._len);
return ret;
}
/**
* Lower
*
* Converts all the values of a string to their corresponding lower case
* value.
*
* @param _base When being used for a data type this is the extended object
* otherwise this is the string base to convert to lower case
* @return string
*/
function lower(string _base) internal pure returns (string) {
bytes memory _baseBytes = bytes(_base);
for (uint i = 0; i < _baseBytes.length; i++) {
_baseBytes[i] = _lower(_baseBytes[i]);
}
return string(_baseBytes);
}
/**
* Lower
*
* Convert an alphabetic character to lower case and return the original
* value when not alphabetic
*
* @param _b1 The byte to be converted to lower case
* @return bytes1 The converted value if the passed value was alphabetic
* and in a upper case otherwise returns the original value
*/
function _lower(bytes1 _b1) internal pure returns (bytes1) {
if (_b1 >= 0x41 && _b1 <= 0x5A) {
return bytes1(uint8(_b1) + 32);
}
return _b1;
}
function memcpy(uint dest, uint src, uint len) private pure {
// Copy word-length chunks while possible
for (; len >= 32; len -= 32) {
assembly {
mstore(dest, mload(src))
}
dest += 32;
src += 32;
}
// Copy remaining bytes
uint mask = 256 ** (32 - len) - 1;
assembly {
let srcpart := and(mload(src), not(mask))
let destpart := and(mload(dest), mask)
mstore(dest, or(destpart, srcpart))
}
}
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract Withdrawable is Ownable {
// Allows owner to withdraw ether from the contract
function withdrawEther(address to) public onlyOwner {
to.transfer(address(this).balance);
}
// Allows owner to withdraw ERC20 tokens from the contract
function withdrawERC20Token(address tokenAddress, address to) public onlyOwner {
ERC20Basic token = ERC20Basic(tokenAddress);
token.transfer(to, token.balanceOf(address(this)));
}
}
contract RaindropClient is Withdrawable {
// attach the StringUtils library
using StringUtils for string;
using StringUtils for StringUtils.slice;
// Events for when a user signs up for Raindrop Client and when their account is deleted
event UserSignUp(string casedUserName, address userAddress, bool delegated);
event UserDeleted(string casedUserName);
// Variables allowing this contract to interact with the Hydro token
address public hydroTokenAddress;
uint public minimumHydroStakeUser;
uint public minimumHydroStakeDelegatedUser;
// User account template
struct User {
string casedUserName;
address userAddress;
bool delegated;
bool _initialized;
}
// Mapping from hashed uncased names to users (primary User directory)
mapping (bytes32 => User) internal userDirectory;
// Mapping from addresses to hashed uncased names (secondary directory for account recovery based on address)
mapping (address => bytes32) internal nameDirectory;
// Requires an address to have a minimum number of Hydro
modifier requireStake(address _address, uint stake) {
ERC20Basic hydro = ERC20Basic(hydroTokenAddress);
require(hydro.balanceOf(_address) >= stake);
_;
}
// Allows applications to sign up users on their behalf iff users signed their permission
function signUpDelegatedUser(string casedUserName, address userAddress, uint8 v, bytes32 r, bytes32 s)
public
requireStake(msg.sender, minimumHydroStakeDelegatedUser)
{
require(isSigned(userAddress, keccak256("Create RaindropClient Hydro Account"), v, r, s));
_userSignUp(casedUserName, userAddress, true);
}
// Allows users to sign up with their own address
function signUpUser(string casedUserName) public requireStake(msg.sender, minimumHydroStakeUser) {
return _userSignUp(casedUserName, msg.sender, false);
}
// Allows users to delete their accounts
function deleteUser() public {
bytes32 uncasedUserNameHash = nameDirectory[msg.sender];
require(userDirectory[uncasedUserNameHash]._initialized);
string memory casedUserName = userDirectory[uncasedUserNameHash].casedUserName;
delete nameDirectory[msg.sender];
delete userDirectory[uncasedUserNameHash];
emit UserDeleted(casedUserName);
}
// Allows the Hydro API to link to the Hydro token
function setHydroTokenAddress(address _hydroTokenAddress) public onlyOwner {
hydroTokenAddress = _hydroTokenAddress;
}
// Allows the Hydro API to set minimum hydro balances required for sign ups
function setMinimumHydroStakes(uint newMinimumHydroStakeUser, uint newMinimumHydroStakeDelegatedUser)
public onlyOwner
{
ERC20Basic hydro = ERC20Basic(hydroTokenAddress);
require(newMinimumHydroStakeUser <= (hydro.totalSupply() / 100 / 100)); // <= .01% of total supply
require(newMinimumHydroStakeDelegatedUser <= (hydro.totalSupply() / 100 / 2)); // <= .5% of total supply
minimumHydroStakeUser = newMinimumHydroStakeUser;
minimumHydroStakeDelegatedUser = newMinimumHydroStakeDelegatedUser;
}
// Returns a bool indicated whether a given userName has been claimed (either exactly or as any case-variant)
function userNameTaken(string userName) public view returns (bool taken) {
bytes32 uncasedUserNameHash = keccak256(userName.lower());
return userDirectory[uncasedUserNameHash]._initialized;
}
// Returns user details (including cased username) by any cased/uncased user name that maps to a particular user
function getUserByName(string userName) public view
returns (string casedUserName, address userAddress, bool delegated)
{
bytes32 uncasedUserNameHash = keccak256(userName.lower());
User storage _user = userDirectory[uncasedUserNameHash];
require(_user._initialized);
return (_user.casedUserName, _user.userAddress, _user.delegated);
}
// Returns user details by user address
function getUserByAddress(address _address) public view returns (string casedUserName, bool delegated) {
bytes32 uncasedUserNameHash = nameDirectory[_address];
User storage _user = userDirectory[uncasedUserNameHash];
require(_user._initialized);
return (_user.casedUserName, _user.delegated);
}
// Checks whether the provided (v, r, s) signature was created by the private key associated with _address
function isSigned(address _address, bytes32 messageHash, uint8 v, bytes32 r, bytes32 s) public pure returns (bool) {
return (_isSigned(_address, messageHash, v, r, s) || _isSignedPrefixed(_address, messageHash, v, r, s));
}
// Checks unprefixed signatures
function _isSigned(address _address, bytes32 messageHash, uint8 v, bytes32 r, bytes32 s)
internal
pure
returns (bool)
{
return ecrecover(messageHash, v, r, s) == _address;
}
// Checks prefixed signatures (e.g. those created with web3.eth.sign)
function _isSignedPrefixed(address _address, bytes32 messageHash, uint8 v, bytes32 r, bytes32 s)
internal
pure
returns (bool)
{
bytes memory prefix = "\x19Ethereum Signed Message:\n32";
bytes32 prefixedMessageHash = keccak256(prefix, messageHash);
return ecrecover(prefixedMessageHash, v, r, s) == _address;
}
// Common internal logic for all user signups
function _userSignUp(string casedUserName, address userAddress, bool delegated) internal {
require(bytes(casedUserName).length < 50);
bytes32 uncasedUserNameHash = keccak256(casedUserName.toSlice().copy().toString().lower());
require(!userDirectory[uncasedUserNameHash]._initialized);
userDirectory[uncasedUserNameHash] = User(casedUserName, userAddress, delegated, true);
nameDirectory[userAddress] = uncasedUserNameHash;
emit UserSignUp(casedUserName, userAddress, delegated);
}
}
|
Allows users to sign up with their own address
|
function signUpUser(string casedUserName) public requireStake(msg.sender, minimumHydroStakeUser) {
return _userSignUp(casedUserName, msg.sender, false);
}
| 7,289,351 |
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/**
*Submitted for verification at Etherscan.io on 2022-03-10
*/
// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/utils/cryptography/MerkleProof.sol
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol)
pragma solidity ^0.8.0;
library MerkleProof {
function verify(
bytes32[] memory proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
return processProof(proof, leaf) == root;
}
function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
bytes32 computedHash = leaf;
for (uint256 i = 0; i < proof.length; i++) {
bytes32 proofElement = proof[i];
if (computedHash <= proofElement) {
computedHash = _efficientHash(computedHash, proofElement);
} else {
computedHash = _efficientHash(proofElement, computedHash);
}
}
return computedHash;
}
function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
assembly {
mstore(0x00, a)
mstore(0x20, b)
value := keccak256(0x00, 0x40)
}
}
}
// File: @openzeppelin/contracts/utils/Counters.sol
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)
pragma solidity ^0.8.0;
library Counters {
struct Counter {
uint256 _value;
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// File: @openzeppelin/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: @openzeppelin/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
library Address {
function isContract(address account) internal view returns (bool) {
return account.code.length > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
interface IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
string private _name;
string private _symbol;
mapping(uint256 => address) private _owners;
mapping(address => uint256) private _balances;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
function _baseURI() internal view virtual returns (string memory) {
return "";
}
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// File: contracts/KoalafiedCommunity.sol
pragma solidity >=0.7.0 <0.9.0;
contract KoalafiedCommunity is ERC721, Ownable {
using Strings for uint256;
using Counters for Counters.Counter;
Counters.Counter private supply;
string public uriPrefix = "";
string public uriSuffix = ".json";
string public hiddenMetadataUri;
uint256 public cost = 0.033 ether;
uint256 public costWhitelist = 0 ether;
uint256 public maxSupply = 3333;
uint256 public maxMintAmountPerTx = 20;
uint256 public maxMintAmountPerTxforWL = 1;
uint256 public maxMintAmountPerWallet = 40;
uint256 public maxMintAmountPerWalletforWL = 1;
bool public paused = false;
bool public isWhiteListActive = true;
bool public revealed = false;
mapping (address => uint) tokenAmountofWallet;
bytes32 public merkleRoot = 0xc3ac6d8682d54ac01c0aff971efc933ff8d13e6451d51007c5b32ba1af9feb35;
constructor() ERC721("Koalafied Community", "KOCO") {
setHiddenMetadataUri("ipfs://QmPnAYFEBWCwWWgEemhGT9uwafvAq5a74C6ogxrsxYsgQG/hidden.json");
}
//mint compliances
modifier mintCompliance(uint256 _mintAmount) {
require(supply.current() + _mintAmount <= maxSupply, "Exceeded Max Supply!");
_;
}
//public mint function
function mint(uint256 _mintAmount) public payable mintCompliance(_mintAmount) {
require(!paused, "The contract is paused!");
require(!isWhiteListActive, "Whitelist minting is still active!");
if(msg.sender != owner()) {
require(_mintAmount > 0 && _mintAmount <= maxMintAmountPerTx, "Exceeded Allowed Amount per TX!");
require(tokenAmountofWallet[msg.sender] + _mintAmount <= maxMintAmountPerWallet, "Exceeded Allowed Amount per Address!");
require(msg.value >= cost * _mintAmount, "Insufficient funds!");
}
tokenAmountofWallet[msg.sender] += _mintAmount;
_mintLoop(msg.sender, _mintAmount);
}
// whitelist mint function
function whiteListMint(uint256 _mintAmount, bytes32[] calldata proof) public payable mintCompliance(_mintAmount) {
require(!paused, "The contract is paused!");
require(isWhiteListActive, "Whitelist minting isn't active anymore!");
require(
MerkleProof.verify(proof, merkleRoot, generateMerkleLeaf(msg.sender)),
"User is not allowed to mint during this phase!"
);
if(msg.sender != owner()) {
require(_mintAmount > 0 && _mintAmount <= maxMintAmountPerTxforWL, "Exceeded Allowed Amount per TX!");
require(tokenAmountofWallet[msg.sender] + _mintAmount <= maxMintAmountPerWalletforWL, "Exceeded Allowed Amount per Address!");
require(msg.value >= costWhitelist * _mintAmount, "Insufficient funds!");
}
tokenAmountofWallet[msg.sender] += _mintAmount;
_mintLoop(msg.sender, _mintAmount);
}
//freemint function
function mintForAddress(uint8 _mintAmount, address _receiver) public mintCompliance(_mintAmount) onlyOwner {
_mintLoop(_receiver, _mintAmount);
}
//safemint function
function _mintLoop(address _receiver, uint256 _mintAmount) internal {
for (uint256 i = 0; i < _mintAmount; i++) {
supply.increment();
_safeMint(_receiver, supply.current());
}
}
//get function for current token amount of caller
function getCurrentMintCount(address _account) public view returns (uint256) {
return tokenAmountofWallet[_account];
}
//supply check
function totalSupply() public view returns (uint256) {
return supply.current();
}
//merkleleaf generation
function generateMerkleLeaf(address account) internal pure returns(bytes32){
return keccak256(abi.encodePacked(account));
}
//set new merkle root function
function setMerkleRoot(bytes32 _merkleRoot) external onlyOwner {
merkleRoot = _merkleRoot;
}
//call contract owner & id owner function
function walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory ownedTokenIds = new uint256[](ownerTokenCount);
uint256 currentTokenId = 1;
uint256 ownedTokenIndex = 0;
while (ownedTokenIndex < ownerTokenCount && currentTokenId <= maxSupply) {
address currentTokenOwner = ownerOf(currentTokenId);
if (currentTokenOwner == _owner) {
ownedTokenIds[ownedTokenIndex] = currentTokenId;
ownedTokenIndex++;
}
currentTokenId++;
}
return ownedTokenIds;
}
//call URL of token function
function tokenURI(uint256 _tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(_tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
if (revealed == false) {
return hiddenMetadataUri;
}
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, _tokenId.toString(), uriSuffix))
: "";
}
//contract enablement functions for white-list
function setIsWhiteListActive(bool _isWhiteListActive) external onlyOwner {
isWhiteListActive = _isWhiteListActive;
}
//contract enablement functions for all
function setPaused(bool _state) public onlyOwner {
paused = _state;
}
//call hidden metadata functions
function setHiddenMetadataUri(string memory _hiddenMetadataUri) public onlyOwner {
hiddenMetadataUri = _hiddenMetadataUri;
}
//call URL function
function _baseURI() internal view virtual override returns (string memory) {
return uriPrefix;
}
//reveal metadata function
function setRevealed(bool _state) public onlyOwner {
revealed = _state;
}
//set new cost function
function setCost(uint256 _cost) public onlyOwner {
cost = _cost;
}
//set new cost for whitelist function
function setcostWhitelist(uint256 _costWhitelist) public onlyOwner {
costWhitelist = _costWhitelist;
}
//set new amount per wallet function
function setmaxMintAmountPerWallet(uint256 _maxMintAmountPerWallet) public onlyOwner {
maxMintAmountPerWallet = _maxMintAmountPerWallet;
}
//set new amount per transaction function
function setmaxMintAmountPerTx(uint256 _maxMintAmountPerTx) public onlyOwner {
maxMintAmountPerTx = _maxMintAmountPerTx;
}
//set new amount per wallet for whitelist function
function setmaxMintAmountPerWalletforWL(uint256 _maxMintAmountPerWalletforWL) public onlyOwner {
maxMintAmountPerWalletforWL = _maxMintAmountPerWalletforWL;
}
//set new amount per transaction for whitelist function
function setmaxMintAmountPerTxforWL(uint256 _maxMintAmountPerTxforWL) public onlyOwner {
maxMintAmountPerTxforWL = _maxMintAmountPerTxforWL;
}
//set new URL prefix function
function setUriPrefix(string memory _uriPrefix) public onlyOwner {
uriPrefix = _uriPrefix;
}
//set new URL suffix function
function setUriSuffix(string memory _uriSuffix) public onlyOwner {
uriSuffix = _uriSuffix;
}
//withdraw function
function withdraw() public onlyOwner {
//50% goes to community wallet
(bool hs, ) = payable(0xfc2f6C88Da2045846EbE84ede4dA3b3D9da1B87F).call{value: address(this).balance * 50 / 100}("");
require(hs);
//rest to team wallet
(bool os, ) = payable(owner()).call{value: address(this).balance}("");
require(os);
}
}
|
withdraw function50% goes to community walletrest to team wallet
|
function withdraw() public onlyOwner {
require(hs);
require(os);
}
| 10,517,938 |
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./full_match/1/0xc258fF338322b6852C281936D4EdEff8AdfF23eE/sources/src/EuclideanFarm.sol
|
Calculated the combined weight for an account Get the old combined weight Loop through the locked stakes, first by getting the liquidity * lock_multiplier portionadd coordination multiplier hereset min_cord_multiplier < 1e18 if we want to shrink yield below base rate If the lock is expired If the lock expired in the time since the last claim, the weight needs to be proportionately averaged this time Get the weighted-average lock_multiplier Otherwise, it needs to just be 1x
|
function calcCurCombinedWeight(address account) public view
returns (
uint256 old_combined_weight,
uint256 new_combined_weight
)
{
old_combined_weight = _combined_weights[account];
new_combined_weight = 0;
for (uint256 i = 0; i < lockedStakes[account].length; i++) {
LockedStake memory thisStake = lockedStakes[account][i];
uint256 lock_multiplier = thisStake.lock_multiplier;
uint256 cord_multiplier = coordinationMultiplier();
require(cord_multiplier != 0, "Multiplier error");
if (cord_multiplier <= min_cord_multiplier){
cord_multiplier = min_cord_multiplier;
}
if (thisStake.ending_timestamp <= block.timestamp) {
if (lastRewardClaimTime[account] < thisStake.ending_timestamp){
uint256 time_before_expiry = (thisStake.ending_timestamp).sub(lastRewardClaimTime[account]);
uint256 time_after_expiry = (block.timestamp).sub(thisStake.ending_timestamp);
uint256 numerator = ((lock_multiplier).mul(time_before_expiry)).add(((MULTIPLIER_PRECISION).mul(time_after_expiry)));
lock_multiplier = numerator.div(time_before_expiry.add(time_after_expiry));
}
else {
lock_multiplier = MULTIPLIER_PRECISION;
}
}
uint256 liquidity = thisStake.liquidity;
uint256 combined_boosted_amount = liquidity.mul(lock_multiplier).div(MULTIPLIER_PRECISION);
uint256 coordination_boosted_amount = combined_boosted_amount.mul(cord_multiplier).div(MULTIPLIER_PRECISION);
new_combined_weight = new_combined_weight.add(coordination_boosted_amount);
}
}
| 4,833,074 |
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
import "./IController.sol";
import "./IManager.sol";
import "./zeppelin/Pausable.sol";
contract Controller is Pausable, IController {
// Track information about a registered contract
struct ContractInfo {
address contractAddress; // Address of contract
bytes20 gitCommitHash; // SHA1 hash of head Git commit during registration of this contract
}
// Track contract ids and contract info
mapping(bytes32 => ContractInfo) private registry;
constructor() {
// Start system as paused
paused = true;
}
/**
* @notice Register contract id and mapped address
* @param _id Contract id (keccak256 hash of contract name)
* @param _contractAddress Contract address
*/
function setContractInfo(
bytes32 _id,
address _contractAddress,
bytes20 _gitCommitHash
) external override onlyOwner {
registry[_id].contractAddress = _contractAddress;
registry[_id].gitCommitHash = _gitCommitHash;
emit SetContractInfo(_id, _contractAddress, _gitCommitHash);
}
/**
* @notice Update contract's controller
* @param _id Contract id (keccak256 hash of contract name)
* @param _controller Controller address
*/
function updateController(bytes32 _id, address _controller) external override onlyOwner {
return IManager(registry[_id].contractAddress).setController(_controller);
}
/**
* @notice Return contract info for a given contract id
* @param _id Contract id (keccak256 hash of contract name)
*/
function getContractInfo(bytes32 _id) public view returns (address, bytes20) {
return (registry[_id].contractAddress, registry[_id].gitCommitHash);
}
/**
* @notice Get contract address for an id
* @param _id Contract id
*/
function getContract(bytes32 _id) public view override returns (address) {
return registry[_id].contractAddress;
}
}
|
Track contract ids and contract info
|
mapping(bytes32 => ContractInfo) private registry;
| 5,496,903 |
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./full_match/5/0xd924AdA45Ead5B3A0f6025893AE14282A3da8f35/sources/contracts/YoinkIt.sol
|
Increment the total rewards sent
|
totalRewardsWon += prizeAmount;
| 7,042,931 |
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pragma solidity ^0.4.16;
import "utils/ControllerExtended.sol";
import "utils/MembershipRegistry.sol";
contract MultiSigController is ControllerExtended, MembershipRegistry {
uint256 public required;
uint256 public dailyLimit;
string public constant name = "MultiSigController";
string public constant version = "1.0";
function MultiSigController(address _proxy, address[] _members, uint256 _required, uint256 _dailyLimit) public {
for (uint256 m = 0; m < _members.length; m++)
addMember(_members[m]);
required = _required;
dailyLimit = _dailyLimit;
setProxy(_proxy);
}
function changeVariables(uint256 _required, uint256 _dailyLimit) onlyProxy {
required = _required;
dailyLimit = _dailyLimit;
}
function canPropose(address _sender, uint256 _proposalID) public constant returns (bool) {
return isMember(_sender);
}
function canVote(address _sender, uint256 _proposalID) public constant returns (bool) {
return isMember(_sender);
}
function canExecute(address _sender, uint256 _proposalID) public constant returns (bool) {
return isMember(_sender) && hasWon(_sender, _proposalID);
}
function votingWeightOf(address _sender, uint256 _proposalID, uint256 _index, uint256 _data) public constant returns (uint256) {
if (isMember(_sender))
return 1;
}
// extra methods for UI
function hasWon(address _sender, uint256 _proposalID) public constant returns (bool) {
for(uint256 c;
c < numDataOf(_proposalID);
c += lengthOf(_proposalID, c) + (20 + 32 + 32)) { // addr, uint, uint
uint256 voteYes = weightOf(_proposalID, 1);
uint256 value = valueOf(_proposalID, c);
address destination = destinationOf(_proposalID, c);
bool safeDestination = isSafeDestination(destination);
bool isNoBytecode = bool(lengthOf(_proposalID, c) == 0);
return ((value + valueWithdrawnLast24Hours()) <= dailyLimit && safeDestination && isNoBytecode) || voteYes >= required;
}
}
// is the tx sending to the rules or board contracts
function isSafeDestination(address _destination) public constant returns (bool) {
return (_destination != address(this));
}
// return the value widthrawn within the last 24 hours
function valueWithdrawnLast24Hours() public constant returns (uint256 valueWithdrawn) {
uint256 oneDayAgo = now - 24 hours;
if (numProposals == 0) return 0;
for (uint256 i = numProposals - 1; i > 0; i--) {
for(uint256 c = 0;
c < numDataOf(i);
c += lengthOf(i, c) + (20 + 32 + 32)) {
uint256 executedAt = executionTimeOf(i);
if (executedAt > oneDayAgo) {
valueWithdrawn += valueOf(i, c);
}
if ((executedAt != 0 && executedAt < oneDayAgo) || i == 0) {
return valueWithdrawn;
}
}
}
}
}
|
extra methods for UI
|
function hasWon(address _sender, uint256 _proposalID) public constant returns (bool) {
for(uint256 c;
c < numDataOf(_proposalID);
uint256 voteYes = weightOf(_proposalID, 1);
uint256 value = valueOf(_proposalID, c);
address destination = destinationOf(_proposalID, c);
bool safeDestination = isSafeDestination(destination);
bool isNoBytecode = bool(lengthOf(_proposalID, c) == 0);
return ((value + valueWithdrawnLast24Hours()) <= dailyLimit && safeDestination && isNoBytecode) || voteYes >= required;
}
| 12,991,549 |
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./full_match/4/0xdaa51b7BDfB1baC5bdF57dC52e94de3af0AF6353/sources/contracts/LotteryWinner.sol
|
Counter to keep track of the rounds
|
uint256 public currentRound = 0;
| 13,297,986 |
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pragma solidity ^0.5.0;
import "../ProxyTokenRequestsStorage.sol";
/**
* @title UniversalUSDollarRequestsStorageV0
*/
contract UniversalUSDollarRequestsStorageV0 is ProxyTokenRequestsStorageV0 {
/**
* @notice Constructor for the UniversalUSDollarRequestsStorageV0
* @param owner owner of the contract
*/
constructor(address owner) public ProxyTokenRequestsStorageV0(owner) {} // solium-disable-line no-empty-blocks
}
|
solium-disable-line no-empty-blocks
|
constructor(address owner) public ProxyTokenRequestsStorageV0(owner) {}
| 13,096,005 |
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] |
./partial_match/42/0xf1f7cd558E90269250f03706Db7144a53502439E/sources/compoundFarmer.sol
|
Fallback in case any other tokens are sent to this contract
|
function withdrawToken(address _tokenAddress) public onlyOwner {
uint256 balance = Erc20(_tokenAddress).balanceOf(address(this));
Erc20(_tokenAddress).transfer(owner, balance);
}
| 3,349,251 |
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import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "./ERC721A.sol";
import "./interfaces/IMerkle.sol";
contract MentalGhosts is ERC721A, Ownable, ReentrancyGuard, Pausable {
using Strings for uint256;
uint256 public price = 0.06 ether;
string public baseUri = "https://ipfs.io/ipfs/QmThpUyzTb59ycjzV2ZaRzw3nwinVpr4C25QAv1GeXcLTQ/";
uint256 public supply = 6666;
string public extension = ".json";
bool public whitelistLive;
address payable public paymentSplitter;
uint256 public maxPerTx = 3;
uint256 public maxPerWallet = 100;
uint256 public maxPerWLWallet = 3;
mapping(address => uint256) whitelistLimitPerWallet;
mapping(address => uint256) limitPerWallet;
mapping(address => bool) admins;
IMerkle public whitelist;
event WhitelistLive(bool live);
constructor(
string memory name,
string memory symbol
) ERC721A(name, symbol) { _pause(); }
function mint(uint256 count) external payable nonReentrant whenNotPaused {
require(msg.value >= price * count, "invalid price");
require(limitPerWallet[msg.sender] + count <= maxPerWallet, "Exceeds max");
require(count <= maxPerTx, "Exceeds max");
_callMint(count, msg.sender);
limitPerWallet[msg.sender] += count;
}
function whitelistMint(uint256 count, bytes32[] memory proof) external payable nonReentrant {
require(whitelistLive, "Not live");
require(msg.value >= price * count, "invalid price");
require(whitelist.isPermitted(msg.sender, proof), "not whitelisted");
require(whitelistLimitPerWallet[msg.sender] + count <= maxPerWLWallet, "Exceeds max");
require(count <= maxPerTx, "Exceeds max");
_callMint(count, msg.sender);
whitelistLimitPerWallet[msg.sender] += count;
}
function adminMint(uint256 count, address to) external adminOrOwner {
_callMint(count, to);
}
function _callMint(uint256 count, address to) internal {
uint256 total = totalSupply();
require(count > 0, "Count is 0");
require(total + count <= supply, "Sold out");
_safeMint(to, count);
}
function burn(uint256 tokenId) external {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
isApprovedForAll(prevOwnership.addr, _msgSender()) ||
getApproved(tokenId) == _msgSender());
require(isApprovedOrOwner, "Not approved");
_burn(tokenId);
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(_exists(tokenId), "ERC721Metadata: Nonexistent token");
string memory currentBaseURI = baseUri;
return
bytes(currentBaseURI).length > 0
? string(
abi.encodePacked(
currentBaseURI,
tokenId.toString(),
extension
)
)
: "";
}
function setExtension(string memory _extension) external adminOrOwner {
extension = _extension;
}
function setUri(string memory _uri) external adminOrOwner {
baseUri = _uri;
}
function setPaused(bool _paused) external adminOrOwner {
if(_paused) {
_pause();
} else {
_unpause();
}
}
function toggleWhitelistLive() external adminOrOwner {
bool isLive = !whitelistLive;
whitelistLive = isLive;
emit WhitelistLive(isLive);
}
function setMerkle(IMerkle _whitelist) external adminOrOwner {
whitelist = _whitelist;
}
function setPrice(uint256 _price) external adminOrOwner {
price = _price;
}
function setMaxPerWallet(uint256 _maxPerWallet) external adminOrOwner {
maxPerWallet = _maxPerWallet;
}
function setMaxWLPerWallet(uint256 _maxPerWLWallet) external adminOrOwner {
maxPerWLWallet = _maxPerWLWallet;
}
function setMaxPerTx(uint256 _maxPerTx) external adminOrOwner {
maxPerTx = _maxPerTx;
}
function setPaymentSplitter(address payable _paymentSplitter) external adminOrOwner {
paymentSplitter = _paymentSplitter;
}
function withdraw() external adminOrOwner {
(bool success, ) = paymentSplitter.call{value: address(this).balance}("");
require(success, "Transfer failed.");
}
function addAdmin(address _admin) external adminOrOwner {
admins[_admin] = true;
}
function removeAdmin(address _admin) external adminOrOwner {
delete admins[_admin];
}
modifier adminOrOwner() {
require(msg.sender == owner() || admins[msg.sender], "Unauthorized");
_;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
// SPDX-License-Identifier: MIT
// Creator: Chiru Labs
pragma solidity ^0.8.4;
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol';
import '@openzeppelin/contracts/utils/Address.sol';
import '@openzeppelin/contracts/utils/Context.sol';
import '@openzeppelin/contracts/utils/Strings.sol';
import '@openzeppelin/contracts/utils/introspection/ERC165.sol';
error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintedQueryForZeroAddress();
error BurnedQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerIndexOutOfBounds();
error OwnerQueryForNonexistentToken();
error TokenIndexOutOfBounds();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
*
* Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
*
* Assumes that the maximum token id cannot exceed 2**128 - 1 (max value of uint128).
*/
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using Address for address;
using Strings for uint256;
// Compiler will pack this into a single 256bit word.
struct TokenOwnership {
// The address of the owner.
address addr;
// Keeps track of the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
}
// Compiler will pack this into a single 256bit word.
struct AddressData {
// Realistically, 2**64-1 is more than enough.
uint64 balance;
// Keeps track of mint count with minimal overhead for tokenomics.
uint64 numberMinted;
// Keeps track of burn count with minimal overhead for tokenomics.
uint64 numberBurned;
}
// The tokenId of the next token to be minted.
uint256 internal _currentIndex;
// The number of tokens burned.
uint256 internal _burnCounter;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
mapping(uint256 => TokenOwnership) internal _ownerships;
// Mapping owner address to address data
mapping(address => AddressData) private _addressData;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_currentIndex = uint128(_startTokenId());
}
/**
* To change the starting tokenId, please override this function.
*
* This function must return a constant which is small enough such that
* the maximum tokenId that can ever be minted will not exceed
* 2**128 - 1 (max value of uint128).
*
* The return type is (uint256) for gas efficiency purposes.
*/
function _startTokenId() internal view virtual returns (uint256) {
return 1;
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
// Counter underflow is impossible as _burnCounter cannot be incremented
// more than _currentIndex - _startTokenId() times
unchecked {
return _currentIndex - _burnCounter - _startTokenId();
}
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
* This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
* It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
*/
function tokenByIndex(uint256 index) public view override returns (uint256) {
uint256 end = _currentIndex;
uint256 tokenIdsIdx;
// Counter overflow is impossible as the loop breaks when
// uint256 i is equal to another uint256 end.
unchecked {
for (uint256 i = _startTokenId(); i < end; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (!ownership.burned) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
}
revert TokenIndexOutOfBounds();
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
* This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
* It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
if (index >= balanceOf(owner)) revert OwnerIndexOutOfBounds();
uint256 end = _currentIndex;
uint256 tokenIdsIdx;
address currOwnershipAddr;
// Counter overflow is impossible as the loop breaks when
// uint256 i is equal to another uint256 end.
unchecked {
for (uint256 i = _startTokenId(); i < end; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.burned) {
continue;
}
if (ownership.addr != address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
}
// Execution should never reach this point.
revert();
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
interfaceId == type(IERC721Enumerable).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view override returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
return uint256(_addressData[owner].balance);
}
function _numberMinted(address owner) internal view returns (uint256) {
if (owner == address(0)) revert MintedQueryForZeroAddress();
return uint256(_addressData[owner].numberMinted);
}
function _numberBurned(address owner) internal view returns (uint256) {
if (owner == address(0)) revert BurnedQueryForZeroAddress();
return uint256(_addressData[owner].numberBurned);
}
/**
* Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
*/
function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
uint256 curr = tokenId;
unchecked {
if (_startTokenId() <= curr && curr < _currentIndex) {
TokenOwnership memory ownership = _ownerships[curr];
if (!ownership.burned) {
if (ownership.addr != address(0)) {
return ownership;
}
// Invariant:
// There will always be an ownership that has an address and is not burned
// before an ownership that does not have an address and is not burned.
// Hence, curr will not underflow.
while (true) {
curr--;
ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view override returns (address) {
return ownershipOf(tokenId).addr;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return '';
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public override {
address owner = ERC721A.ownerOf(tokenId);
if (to == owner) revert ApprovalToCurrentOwner();
if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public override {
if (operator == _msgSender()) revert ApproveToCaller();
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
_transfer(from, to, tokenId);
if (!_checkOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return _startTokenId() <= tokenId && tokenId < _currentIndex &&
!_ownerships[tokenId].burned;
}
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, '');
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
_mint(to, quantity, _data, true);
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _mint(
address to,
uint256 quantity,
bytes memory _data,
bool safe
) internal {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// balance or numberMinted overflow if current value of either + quantity > 3.4e38 (2**128) - 1
// updatedIndex overflows if _currentIndex + quantity > 3.4e38 (2**128) - 1
unchecked {
_addressData[to].balance += uint64(quantity);
_addressData[to].numberMinted += uint64(quantity);
_ownerships[startTokenId].addr = to;
_ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
uint256 updatedIndex = startTokenId;
for (uint256 i; i < quantity; i++) {
emit Transfer(address(0), to, updatedIndex);
if (safe && !_checkOnERC721Received(address(0), to, updatedIndex, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
updatedIndex++;
}
_currentIndex = uint128(updatedIndex);
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) private {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
isApprovedForAll(prevOwnership.addr, _msgSender()) ||
getApproved(tokenId) == _msgSender());
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
if (to == address(0)) revert TransferToZeroAddress();
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**128.
unchecked {
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
_ownerships[tokenId].addr = to;
_ownerships[tokenId].startTimestamp = uint64(block.timestamp);
// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId < _currentIndex) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
_beforeTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**128.
unchecked {
_addressData[prevOwnership.addr].balance -= 1;
_addressData[prevOwnership.addr].numberBurned += 1;
// Keep track of who burned the token, and the timestamp of burning.
_ownerships[tokenId].addr = prevOwnership.addr;
_ownerships[tokenId].startTimestamp = uint64(block.timestamp);
_ownerships[tokenId].burned = true;
// If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId < _currentIndex) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(prevOwnership.addr, address(0), tokenId);
_afterTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
unchecked {
_burnCounter++;
}
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert TransferToNonERC721ReceiverImplementer();
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
* And also called before burning one token.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
* minting.
* And also called after one token has been burned.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
* transferred to `to`.
* - When `from` is zero, `tokenId` has been minted for `to`.
* - When `to` is zero, `tokenId` has been burned by `from`.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
pragma solidity 0.8.10;
interface IMerkle {
function leaf(address) external pure returns (bytes32);
function verify(bytes32 leaf, bytes32[] memory proof) external view returns (bool);
function isPermitted(address account, bytes32[] memory proof) external view returns (bool);
function setRoot(bytes32 _root) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
|
* @dev See {IERC721Enumerable-totalSupply}./ Counter underflow is impossible as _burnCounter cannot be incremented more than _currentIndex - _startTokenId() times
|
function totalSupply() public view override returns (uint256) {
unchecked {
return _currentIndex - _burnCounter - _startTokenId();
}
}
| 14,406,833 |
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pragma solidity ^0.5.0;
import "../../openzeppelin-solidity/contracts/math/SafeMath.sol";
import "./BridgeToken.sol";
/**
* @title Chain33Bank
* @dev Manages the deployment and minting of ERC20 compatible BridgeTokens
* which represent assets based on the Chain33 blockchain.
**/
contract Chain33Bank {
using SafeMath for uint256;
uint256 public bridgeTokenCount;
mapping(address => bool) public bridgeTokenWhitelist;
mapping(bytes32 => bool) public bridgeTokenCreated;
mapping(bytes32 => Chain33Deposit) chain33Deposits;
mapping(bytes32 => Chain33Burn) chain33Burns;
mapping(address => DepositBurnCount) depositBurnCounts;
mapping(bytes32 => address) public token2address;
struct Chain33Deposit {
bytes chain33Sender;
address payable ethereumRecipient;
address bridgeTokenAddress;
uint256 amount;
bool exist;
uint256 nonce;
}
struct DepositBurnCount {
uint256 depositCount;
uint256 burnCount;
}
struct Chain33Burn {
bytes chain33Sender;
address payable ethereumOwner;
address bridgeTokenAddress;
uint256 amount;
uint256 nonce;
}
/*
* @dev: Event declarations
*/
event LogNewBridgeToken(
address _token,
string _symbol
);
event LogBridgeTokenMint(
address _token,
string _symbol,
uint256 _amount,
address _beneficiary
);
event LogChain33TokenBurn(
address _token,
string _symbol,
uint256 _amount,
address _ownerFrom,
bytes _chain33Receiver,
uint256 _nonce
);
/*
* @dev: Modifier to make sure this symbol not created now
*/
modifier notCreated(string memory _symbol)
{
require(
!hasBridgeTokenCreated(_symbol),
"The symbol has been created already"
);
_;
}
/*
* @dev: Modifier to make sure this symbol not created now
*/
modifier created(string memory _symbol)
{
require(
hasBridgeTokenCreated(_symbol),
"The symbol has not been created yet"
);
_;
}
/*
* @dev: Constructor, sets bridgeTokenCount
*/
constructor () public {
bridgeTokenCount = 0;
}
/*
* @dev: check whether this symbol has been created yet or not
*
* @param _symbol: token symbol
* @return: true or false
*/
function hasBridgeTokenCreated(string memory _symbol) public view returns(bool) {
bytes32 symHash = keccak256(abi.encodePacked(_symbol));
return bridgeTokenCreated[symHash];
}
/*
* @dev: Creates a new Chain33Deposit with a unique ID
*
* @param _chain33Sender: The sender's Chain33 address in bytes.
* @param _ethereumRecipient: The intended recipient's Ethereum address.
* @param _token: The currency type
* @param _amount: The amount in the deposit.
* @return: The newly created Chain33Deposit's unique id.
*/
function newChain33Deposit(
bytes memory _chain33Sender,
address payable _ethereumRecipient,
address _token,
uint256 _amount
)
internal
returns(bytes32)
{
DepositBurnCount memory depositBurnCount = depositBurnCounts[_token];
depositBurnCount.depositCount = depositBurnCount.depositCount.add(1);
depositBurnCounts[_token] = depositBurnCount;
bytes32 depositID = keccak256(
abi.encodePacked(
_chain33Sender,
_ethereumRecipient,
_token,
_amount,
depositBurnCount.depositCount
)
);
chain33Deposits[depositID] = Chain33Deposit(
_chain33Sender,
_ethereumRecipient,
_token,
_amount,
true,
depositBurnCount.depositCount
);
return depositID;
}
/*
* @dev: Creates a new Chain33Burn with a unique ID
*
* @param _chain33Sender: The sender's Chain33 address in bytes.
* @param _ethereumOwner: The owner's Ethereum address.
* @param _token: The token Address
* @param _amount: The amount to be burned.
* @param _nonce: The nonce indicates the burn count for this token
* @return: The newly created Chain33Burn's unique id.
*/
function newChain33Burn(
bytes memory _chain33Sender,
address payable _ethereumOwner,
address _token,
uint256 _amount,
uint256 nonce
)
internal
returns(bytes32)
{
bytes32 burnID = keccak256(
abi.encodePacked(
_chain33Sender,
_ethereumOwner,
_token,
_amount,
nonce
)
);
chain33Burns[burnID] = Chain33Burn(
_chain33Sender,
_ethereumOwner,
_token,
_amount,
nonce
);
return burnID;
}
/*
* @dev: Deploys a new BridgeToken contract
*
* @param _symbol: The BridgeToken's symbol
*/
function deployNewBridgeToken(
string memory _symbol
)
internal
notCreated(_symbol)
returns(address)
{
bridgeTokenCount = bridgeTokenCount.add(1);
// Deploy new bridge token contract
BridgeToken newBridgeToken = (new BridgeToken)(_symbol);
// Set address in tokens mapping
address newBridgeTokenAddress = address(newBridgeToken);
bridgeTokenWhitelist[newBridgeTokenAddress] = true;
bytes32 symHash = keccak256(abi.encodePacked(_symbol));
bridgeTokenCreated[symHash] = true;
depositBurnCounts[newBridgeTokenAddress] = DepositBurnCount(
uint256(0),
uint256(0));
token2address[symHash] = newBridgeTokenAddress;
emit LogNewBridgeToken(
newBridgeTokenAddress,
_symbol
);
return newBridgeTokenAddress;
}
/*
* @dev: Mints new chain33 tokens
*
* @param _chain33Sender: The sender's Chain33 address in bytes.
* @param _ethereumRecipient: The intended recipient's Ethereum address.
* @param _chain33TokenAddress: The currency type
* @param _symbol: chain33 token symbol
* @param _amount: number of chain33 tokens to be minted
*/
function mintNewBridgeTokens(
bytes memory _chain33Sender,
address payable _intendedRecipient,
address _bridgeTokenAddress,
string memory _symbol,
uint256 _amount
)
internal
{
// Must be whitelisted bridge token
require(
bridgeTokenWhitelist[_bridgeTokenAddress],
"Token must be a whitelisted bridge token"
);
// Mint bridge tokens
require(
BridgeToken(_bridgeTokenAddress).mint(
_intendedRecipient,
_amount
),
"Attempted mint of bridge tokens failed"
);
newChain33Deposit(
_chain33Sender,
_intendedRecipient,
_bridgeTokenAddress,
_amount
);
emit LogBridgeTokenMint(
_bridgeTokenAddress,
_symbol,
_amount,
_intendedRecipient
);
}
/*
* @dev: Burn chain33 tokens
*
* @param _from: The address to be burned from
* @param _chain33Receiver: The receiver's Chain33 address in bytes.
* @param _chain33TokenAddress: The token address of chain33 asset issued on ethereum
* @param _amount: number of chain33 tokens to be minted
*/
function burnChain33Tokens(
address payable _from,
bytes memory _chain33Receiver,
address _chain33TokenAddress,
uint256 _amount
)
internal
{
// Must be whitelisted bridge token
require(
bridgeTokenWhitelist[_chain33TokenAddress],
"Token must be a whitelisted bridge token"
);
// burn bridge tokens
BridgeToken bridgeTokenInstance = BridgeToken(_chain33TokenAddress);
bridgeTokenInstance.burnFrom(_from, _amount);
DepositBurnCount memory depositBurnCount = depositBurnCounts[_chain33TokenAddress];
require(
depositBurnCount.burnCount + 1 > depositBurnCount.burnCount,
"burn nonce is not available"
);
depositBurnCount.burnCount = depositBurnCount.burnCount.add(1);
depositBurnCounts[_chain33TokenAddress] = depositBurnCount;
newChain33Burn(
_chain33Receiver,
_from,
_chain33TokenAddress,
_amount,
depositBurnCount.burnCount
);
emit LogChain33TokenBurn(
_chain33TokenAddress,
bridgeTokenInstance.symbol(),
_amount,
_from,
_chain33Receiver,
depositBurnCount.burnCount
);
}
/*
* @dev: Checks if an individual Chain33Deposit exists.
*
* @param _id: The unique Chain33Deposit's id.
* @return: Boolean indicating if the Chain33Deposit exists in memory.
*/
function isLockedChain33Deposit(
bytes32 _id
)
internal
view
returns(bool)
{
return(chain33Deposits[_id].exist);
}
/*
* @dev: Gets an item's information
*
* @param _Id: The item containing the desired information.
* @return: Sender's address.
* @return: Recipient's address in bytes.
* @return: Token address.
* @return: Amount of ethereum/erc20 in the item.
* @return: Unique nonce of the item.
*/
function getChain33Deposit(
bytes32 _id
)
internal
view
returns(bytes memory, address payable, address, uint256)
{
Chain33Deposit memory deposit = chain33Deposits[_id];
return(
deposit.chain33Sender,
deposit.ethereumRecipient,
deposit.bridgeTokenAddress,
deposit.amount
);
}
function getToken2address(string memory _symbol)
created(_symbol)
public view returns(address)
{
bytes32 symHash = keccak256(abi.encodePacked(_symbol));
return token2address[symHash];
}
}
|
@dev: Gets an item's information @param _Id: The item containing the desired information. @return: Sender's address. @return: Recipient's address in bytes. @return: Token address. @return: Amount of ethereum/erc20 in the item. @return: Unique nonce of the item./
|
function getChain33Deposit(
bytes32 _id
)
internal
view
returns(bytes memory, address payable, address, uint256)
{
Chain33Deposit memory deposit = chain33Deposits[_id];
return(
deposit.chain33Sender,
deposit.ethereumRecipient,
deposit.bridgeTokenAddress,
deposit.amount
);
}
| 12,752,958 |
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./partial_match/100/0x2bF7042E876453119B0F9B019c36c4f8A2334e61/sources/StakingAuRa.sol
|
@dev Adds the `unremovable validator` to either the `poolsToBeElected` or the `poolsToBeRemoved` array depending on their own stake in their own pool when they become removable. This allows the `ValidatorSetAuRa.newValidatorSet` function to recognize the unremovable validator as a regular removable pool. Called by the `ValidatorSet.clearUnremovableValidator` function. @param _unremovableStakingAddress The staking address of the unremovable validator.
|
function clearUnremovableValidator(address _unremovableStakingAddress) external onlyValidatorSetContract {
require(_unremovableStakingAddress != address(0));
if (stakeAmount[_unremovableStakingAddress][address(0)] != 0) {
_addPoolToBeElected(_unremovableStakingAddress);
_setLikelihood(_unremovableStakingAddress);
_addPoolToBeRemoved(_unremovableStakingAddress);
}
}
| 16,646,185 |
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./partial_match/42/0xA654B97E09f42ef6dbC9C9ccB923F61D8b1bECf8/sources/CollateralManager.sol
|
Inheritance Libraries Internal references Flexible storage names Stores debt balances and borrow rates. The set of all collateral contracts. The set of all pynths issuable by the various collateral contracts Map from currency key to pynth contract name. The set of all pynths that are shortable. The factor that will scale the utilisation ratio. The maximum amount of debt in pUSD that can be issued by non pnx collateral. The base interest rate applied to all borrows. The base interest rate applied to all shorts.
|
contract CollateralManager is ICollateralManager, Owned, Pausable, MixinResolver {
using SafeMath for uint;
using SafeDecimalMath for uint;
using AddressSetLib for AddressSetLib.AddressSet;
using Bytes32SetLib for Bytes32SetLib.Bytes32Set;
bytes32 private constant pUSD = "pUSD";
uint private constant SECONDS_IN_A_YEAR = 31556926 * 1e18;
bytes32 public constant CONTRACT_NAME = "CollateralManager";
bytes32 internal constant COLLATERAL_PYNTHS = "collateralPynth";
CollateralManagerState public state;
AddressSetLib.AddressSet internal _collaterals;
Bytes32SetLib.Bytes32Set internal _pynths;
mapping(bytes32 => bytes32) public pynthsByKey;
Bytes32SetLib.Bytes32Set internal _shortablePynths;
mapping(bytes32 => bytes32) public pynthToInversePynth;
uint public utilisationMultiplier = 1e18;
uint public maxDebt;
uint public baseBorrowRate;
uint public baseShortRate;
bytes32 private constant CONTRACT_ISSUER = "Issuer";
bytes32 private constant CONTRACT_EXRATES = "ExchangeRates";
bytes32[24] private addressesToCache = [CONTRACT_ISSUER, CONTRACT_EXRATES];
constructor(
CollateralManagerState _state,
address _owner,
address _resolver,
uint _maxDebt,
uint _baseBorrowRate,
uint _baseShortRate
function aggregators(bytes32 currencyKey) external view returns (address);
function aggregatorWarningFlags() external view returns (address);
function anyRateIsInvalid(bytes32[] calldata currencyKeys) external view returns (bool);
function canFreezeRate(bytes32 currencyKey) external view returns (bool);
function currentRoundForRate(bytes32 currencyKey) external view returns (uint);
function currenciesUsingAggregator(address aggregator) external view returns (bytes32[] memory);
function effectiveValue(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey
) external view returns (uint value);
function effectiveValueAndRates(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey
)
external
view
returns (
uint value,
uint sourceRate,
uint destinationRate
);
function effectiveValueAtRound(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey,
uint roundIdForSrc,
uint roundIdForDest
) external view returns (uint value);
function getCurrentRoundId(bytes32 currencyKey) external view returns (uint);
function getLastRoundIdBeforeElapsedSecs(
bytes32 currencyKey,
uint startingRoundId,
uint startingTimestamp,
uint timediff
) external view returns (uint);
function inversePricing(bytes32 currencyKey)
external
view
returns (
uint entryPoint,
uint upperLimit,
uint lowerLimit,
bool frozenAtUpperLimit,
bool frozenAtLowerLimit
);
function lastRateUpdateTimes(bytes32 currencyKey) external view returns (uint256);
function oracle() external view returns (address);
function rateAndTimestampAtRound(bytes32 currencyKey, uint roundId) external view returns (uint rate, uint time);
function rateAndUpdatedTime(bytes32 currencyKey) external view returns (uint rate, uint time);
function rateAndInvalid(bytes32 currencyKey) external view returns (uint rate, bool isInvalid);
function rateForCurrency(bytes32 currencyKey) external view returns (uint);
function rateIsFlagged(bytes32 currencyKey) external view returns (bool);
function rateIsFrozen(bytes32 currencyKey) external view returns (bool);
function rateIsInvalid(bytes32 currencyKey) external view returns (bool);
function rateIsStale(bytes32 currencyKey) external view returns (bool);
function rateStalePeriod() external view returns (uint);
function ratesAndUpdatedTimeForCurrencyLastNRounds(bytes32 currencyKey, uint numRounds)
external
view
returns (uint[] memory rates, uint[] memory times);
function ratesAndInvalidForCurrencies(bytes32[] calldata currencyKeys)
external
view
returns (uint[] memory rates, bool anyRateInvalid);
function ratesForCurrencies(bytes32[] calldata currencyKeys) external view returns (uint[] memory);
function freezeRate(bytes32 currencyKey) external;
}
}
}
) public Owned(_owner) Pausable() MixinResolver(_resolver) {
owner = msg.sender;
state = _state;
setMaxDebt(_maxDebt);
setBaseBorrowRate(_baseBorrowRate);
setBaseShortRate(_baseShortRate);
owner = _owner;
}
function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {
bytes32[] memory staticAddresses = new bytes32[](2);
staticAddresses[0] = CONTRACT_ISSUER;
staticAddresses[1] = CONTRACT_EXRATES;
bytes32[] memory shortAddresses;
uint length = _shortablePynths.elements.length;
if (length > 0) {
shortAddresses = new bytes32[](length * 2);
for (uint i = 0; i < length; i++) {
shortAddresses[i] = _shortablePynths.elements[i];
shortAddresses[i + length] = pynthToInversePynth[_shortablePynths.elements[i]];
}
}
bytes32[] memory pynthAddresses = combineArrays(shortAddresses, _pynths.elements);
if (pynthAddresses.length > 0) {
addresses = combineArrays(pynthAddresses, staticAddresses);
addresses = staticAddresses;
}
}
function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {
bytes32[] memory staticAddresses = new bytes32[](2);
staticAddresses[0] = CONTRACT_ISSUER;
staticAddresses[1] = CONTRACT_EXRATES;
bytes32[] memory shortAddresses;
uint length = _shortablePynths.elements.length;
if (length > 0) {
shortAddresses = new bytes32[](length * 2);
for (uint i = 0; i < length; i++) {
shortAddresses[i] = _shortablePynths.elements[i];
shortAddresses[i + length] = pynthToInversePynth[_shortablePynths.elements[i]];
}
}
bytes32[] memory pynthAddresses = combineArrays(shortAddresses, _pynths.elements);
if (pynthAddresses.length > 0) {
addresses = combineArrays(pynthAddresses, staticAddresses);
addresses = staticAddresses;
}
}
function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {
bytes32[] memory staticAddresses = new bytes32[](2);
staticAddresses[0] = CONTRACT_ISSUER;
staticAddresses[1] = CONTRACT_EXRATES;
bytes32[] memory shortAddresses;
uint length = _shortablePynths.elements.length;
if (length > 0) {
shortAddresses = new bytes32[](length * 2);
for (uint i = 0; i < length; i++) {
shortAddresses[i] = _shortablePynths.elements[i];
shortAddresses[i + length] = pynthToInversePynth[_shortablePynths.elements[i]];
}
}
bytes32[] memory pynthAddresses = combineArrays(shortAddresses, _pynths.elements);
if (pynthAddresses.length > 0) {
addresses = combineArrays(pynthAddresses, staticAddresses);
addresses = staticAddresses;
}
}
function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {
bytes32[] memory staticAddresses = new bytes32[](2);
staticAddresses[0] = CONTRACT_ISSUER;
staticAddresses[1] = CONTRACT_EXRATES;
bytes32[] memory shortAddresses;
uint length = _shortablePynths.elements.length;
if (length > 0) {
shortAddresses = new bytes32[](length * 2);
for (uint i = 0; i < length; i++) {
shortAddresses[i] = _shortablePynths.elements[i];
shortAddresses[i + length] = pynthToInversePynth[_shortablePynths.elements[i]];
}
}
bytes32[] memory pynthAddresses = combineArrays(shortAddresses, _pynths.elements);
if (pynthAddresses.length > 0) {
addresses = combineArrays(pynthAddresses, staticAddresses);
addresses = staticAddresses;
}
}
} else {
function isPynthManaged(bytes32 currencyKey) external view returns (bool) {
return pynthsByKey[currencyKey] != bytes32(0);
}
function _issuer() internal view returns (IIssuer) {
return IIssuer(requireAndGetAddress(CONTRACT_ISSUER));
}
function _exchangeRates() internal view returns (IExchangeRates) {
return IExchangeRates(requireAndGetAddress(CONTRACT_EXRATES));
}
function _pynth(bytes32 pynthName) internal view returns (IPynth) {
return IPynth(requireAndGetAddress(pynthName));
}
function hasCollateral(address collateral) public view returns (bool) {
return _collaterals.contains(collateral);
}
function hasAllCollaterals(address[] memory collaterals) public view returns (bool) {
for (uint i = 0; i < collaterals.length; i++) {
if (!hasCollateral(collaterals[i])) {
return false;
}
}
return true;
}
function hasAllCollaterals(address[] memory collaterals) public view returns (bool) {
for (uint i = 0; i < collaterals.length; i++) {
if (!hasCollateral(collaterals[i])) {
return false;
}
}
return true;
}
function hasAllCollaterals(address[] memory collaterals) public view returns (bool) {
for (uint i = 0; i < collaterals.length; i++) {
if (!hasCollateral(collaterals[i])) {
return false;
}
}
return true;
}
function long(bytes32 pynth) external view returns (uint amount) {
return state.long(pynth);
}
function short(bytes32 pynth) external view returns (uint amount) {
return state.short(pynth);
}
function totalLong() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _pynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
if (pynth == pUSD) {
susdValue = susdValue.add(state.long(pynth));
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.long(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
}
function totalLong() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _pynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
if (pynth == pUSD) {
susdValue = susdValue.add(state.long(pynth));
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.long(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
}
function totalLong() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _pynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
if (pynth == pUSD) {
susdValue = susdValue.add(state.long(pynth));
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.long(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
}
function totalLong() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _pynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
if (pynth == pUSD) {
susdValue = susdValue.add(state.long(pynth));
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.long(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
}
} else {
function totalLong() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _pynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
if (pynth == pUSD) {
susdValue = susdValue.add(state.long(pynth));
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.long(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
}
function totalShort() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _shortablePynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.short(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
function totalShort() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _shortablePynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.short(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
function totalShort() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _shortablePynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.short(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
function totalShort() public view returns (uint susdValue, bool anyRateIsInvalid) {
bytes32[] memory pynths = _shortablePynths.elements;
if (pynths.length > 0) {
for (uint i = 0; i < pynths.length; i++) {
bytes32 pynth = _pynth(pynths[i]).currencyKey();
(uint rate, bool invalid) = _exchangeRates().rateAndInvalid(pynth);
uint amount = state.short(pynth).multiplyDecimal(rate);
susdValue = susdValue.add(amount);
if (invalid) {
anyRateIsInvalid = true;
}
}
}
}
function getBorrowRate() external view returns (uint borrowRate, bool anyRateIsInvalid) {
uint pnxDebt = _issuer().totalIssuedPynths(pUSD, true);
(uint nonpnxDebt, bool ratesInvalid) = totalLong();
uint totalDebt = pnxDebt.add(nonpnxDebt);
uint utilisation = nonpnxDebt.divideDecimal(totalDebt).divideDecimal(SECONDS_IN_A_YEAR);
uint scaledUtilisation = utilisation.multiplyDecimal(utilisationMultiplier);
borrowRate = scaledUtilisation.add(baseBorrowRate);
anyRateIsInvalid = ratesInvalid;
}
function getShortRate(bytes32 pynth) external view returns (uint shortRate, bool rateIsInvalid) {
bytes32 pynthKey = _pynth(pynth).currencyKey();
rateIsInvalid = _exchangeRates().rateIsInvalid(pynthKey);
uint longSupply = IERC20(address(_pynth(pynth))).totalSupply();
uint inverseSupply = IERC20(address(_pynth(pynthToInversePynth[pynth]))).totalSupply();
uint shortSupply = state.short(pynthKey).add(inverseSupply);
if (longSupply > shortSupply) {
return (0, rateIsInvalid);
}
}
function getShortRate(bytes32 pynth) external view returns (uint shortRate, bool rateIsInvalid) {
bytes32 pynthKey = _pynth(pynth).currencyKey();
rateIsInvalid = _exchangeRates().rateIsInvalid(pynthKey);
uint longSupply = IERC20(address(_pynth(pynth))).totalSupply();
uint inverseSupply = IERC20(address(_pynth(pynthToInversePynth[pynth]))).totalSupply();
uint shortSupply = state.short(pynthKey).add(inverseSupply);
if (longSupply > shortSupply) {
return (0, rateIsInvalid);
}
}
uint skew = shortSupply.sub(longSupply);
uint proportionalSkew = skew.divideDecimal(longSupply.add(shortSupply)).divideDecimal(SECONDS_IN_A_YEAR);
shortRate = proportionalSkew.add(baseShortRate);
function getRatesAndTime(uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
)
{
(entryRate, lastRate, lastUpdated, newIndex) = state.getRatesAndTime(index);
}
function getShortRatesAndTime(bytes32 currency, uint index)
external
view
returns (
uint entryRate,
uint lastRate,
uint lastUpdated,
uint newIndex
)
{
(entryRate, lastRate, lastUpdated, newIndex) = state.getShortRatesAndTime(currency, index);
}
function exceedsDebtLimit(uint amount, bytes32 currency) external view returns (bool canIssue, bool anyRateIsInvalid) {
uint usdAmount = _exchangeRates().effectiveValue(currency, amount, pUSD);
(uint longValue, bool longInvalid) = totalLong();
(uint shortValue, bool shortInvalid) = totalShort();
anyRateIsInvalid = longInvalid || shortInvalid;
return (longValue.add(shortValue).add(usdAmount) <= maxDebt, anyRateIsInvalid);
}
function setUtilisationMultiplier(uint _utilisationMultiplier) public onlyOwner {
require(_utilisationMultiplier > 0, "Must be greater than 0");
utilisationMultiplier = _utilisationMultiplier;
}
function setMaxDebt(uint _maxDebt) public onlyOwner {
require(_maxDebt > 0, "Must be greater than 0");
maxDebt = _maxDebt;
emit MaxDebtUpdated(maxDebt);
}
function setBaseBorrowRate(uint _baseBorrowRate) public onlyOwner {
baseBorrowRate = _baseBorrowRate;
emit BaseBorrowRateUpdated(baseBorrowRate);
}
function setBaseShortRate(uint _baseShortRate) public onlyOwner {
baseShortRate = _baseShortRate;
emit BaseShortRateUpdated(baseShortRate);
}
function getNewLoanId() external onlyCollateral returns (uint id) {
id = state.incrementTotalLoans();
}
function addCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (!_collaterals.contains(collaterals[i])) {
_collaterals.add(collaterals[i]);
emit CollateralAdded(collaterals[i]);
}
}
}
function addCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (!_collaterals.contains(collaterals[i])) {
_collaterals.add(collaterals[i]);
emit CollateralAdded(collaterals[i]);
}
}
}
function addCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (!_collaterals.contains(collaterals[i])) {
_collaterals.add(collaterals[i]);
emit CollateralAdded(collaterals[i]);
}
}
}
function removeCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (_collaterals.contains(collaterals[i])) {
_collaterals.remove(collaterals[i]);
emit CollateralRemoved(collaterals[i]);
}
}
}
function removeCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (_collaterals.contains(collaterals[i])) {
_collaterals.remove(collaterals[i]);
emit CollateralRemoved(collaterals[i]);
}
}
}
function removeCollaterals(address[] calldata collaterals) external onlyOwner {
for (uint i = 0; i < collaterals.length; i++) {
if (_collaterals.contains(collaterals[i])) {
_collaterals.remove(collaterals[i]);
emit CollateralRemoved(collaterals[i]);
}
}
}
function addPynths(bytes32[] calldata pynthNamesInResolver, bytes32[] calldata pynthKeys) external onlyOwner {
for (uint i = 0; i < pynthNamesInResolver.length; i++) {
if (!_pynths.contains(pynthNamesInResolver[i])) {
bytes32 pynthName = pynthNamesInResolver[i];
_pynths.add(pynthName);
pynthsByKey[pynthKeys[i]] = pynthName;
emit PynthAdded(pynthName);
}
}
}
function addPynths(bytes32[] calldata pynthNamesInResolver, bytes32[] calldata pynthKeys) external onlyOwner {
for (uint i = 0; i < pynthNamesInResolver.length; i++) {
if (!_pynths.contains(pynthNamesInResolver[i])) {
bytes32 pynthName = pynthNamesInResolver[i];
_pynths.add(pynthName);
pynthsByKey[pynthKeys[i]] = pynthName;
emit PynthAdded(pynthName);
}
}
}
function addPynths(bytes32[] calldata pynthNamesInResolver, bytes32[] calldata pynthKeys) external onlyOwner {
for (uint i = 0; i < pynthNamesInResolver.length; i++) {
if (!_pynths.contains(pynthNamesInResolver[i])) {
bytes32 pynthName = pynthNamesInResolver[i];
_pynths.add(pynthName);
pynthsByKey[pynthKeys[i]] = pynthName;
emit PynthAdded(pynthName);
}
}
}
function arePynthsAndCurrenciesSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
if (_pynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
if (!_pynths.contains(requiredPynthNamesInResolver[i])) {
return false;
}
if (pynthsByKey[pynthKeys[i]] != requiredPynthNamesInResolver[i]) {
return false;
}
}
return true;
}
function arePynthsAndCurrenciesSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
if (_pynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
if (!_pynths.contains(requiredPynthNamesInResolver[i])) {
return false;
}
if (pynthsByKey[pynthKeys[i]] != requiredPynthNamesInResolver[i]) {
return false;
}
}
return true;
}
function arePynthsAndCurrenciesSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
if (_pynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
if (!_pynths.contains(requiredPynthNamesInResolver[i])) {
return false;
}
if (pynthsByKey[pynthKeys[i]] != requiredPynthNamesInResolver[i]) {
return false;
}
}
return true;
}
function arePynthsAndCurrenciesSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
if (_pynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
if (!_pynths.contains(requiredPynthNamesInResolver[i])) {
return false;
}
if (pynthsByKey[pynthKeys[i]] != requiredPynthNamesInResolver[i]) {
return false;
}
}
return true;
}
function arePynthsAndCurrenciesSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
if (_pynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
if (!_pynths.contains(requiredPynthNamesInResolver[i])) {
return false;
}
if (pynthsByKey[pynthKeys[i]] != requiredPynthNamesInResolver[i]) {
return false;
}
}
return true;
}
function removePynths(bytes32[] calldata pynths, bytes32[] calldata pynthKeys) external onlyOwner {
for (uint i = 0; i < pynths.length; i++) {
if (_pynths.contains(pynths[i])) {
_pynths.remove(pynths[i]);
delete pynthsByKey[pynthKeys[i]];
emit PynthRemoved(pynths[i]);
}
}
}
function removePynths(bytes32[] calldata pynths, bytes32[] calldata pynthKeys) external onlyOwner {
for (uint i = 0; i < pynths.length; i++) {
if (_pynths.contains(pynths[i])) {
_pynths.remove(pynths[i]);
delete pynthsByKey[pynthKeys[i]];
emit PynthRemoved(pynths[i]);
}
}
}
function removePynths(bytes32[] calldata pynths, bytes32[] calldata pynthKeys) external onlyOwner {
for (uint i = 0; i < pynths.length; i++) {
if (_pynths.contains(pynths[i])) {
_pynths.remove(pynths[i]);
delete pynthsByKey[pynthKeys[i]];
emit PynthRemoved(pynths[i]);
}
}
}
function addShortablePynths(bytes32[2][] calldata requiredPynthAndInverseNamesInResolver, bytes32[] calldata pynthKeys)
external
onlyOwner
{
require(requiredPynthAndInverseNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
for (uint i = 0; i < requiredPynthAndInverseNamesInResolver.length; i++) {
bytes32 pynth = requiredPynthAndInverseNamesInResolver[i][0];
bytes32 iPynth = requiredPynthAndInverseNamesInResolver[i][1];
if (!_shortablePynths.contains(pynth)) {
_shortablePynths.add(pynth);
pynthToInversePynth[pynth] = iPynth;
emit ShortablePynthAdded(pynth);
state.addShortCurrency(pynthKeys[i]);
}
}
rebuildCache();
}
function addShortablePynths(bytes32[2][] calldata requiredPynthAndInverseNamesInResolver, bytes32[] calldata pynthKeys)
external
onlyOwner
{
require(requiredPynthAndInverseNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
for (uint i = 0; i < requiredPynthAndInverseNamesInResolver.length; i++) {
bytes32 pynth = requiredPynthAndInverseNamesInResolver[i][0];
bytes32 iPynth = requiredPynthAndInverseNamesInResolver[i][1];
if (!_shortablePynths.contains(pynth)) {
_shortablePynths.add(pynth);
pynthToInversePynth[pynth] = iPynth;
emit ShortablePynthAdded(pynth);
state.addShortCurrency(pynthKeys[i]);
}
}
rebuildCache();
}
function addShortablePynths(bytes32[2][] calldata requiredPynthAndInverseNamesInResolver, bytes32[] calldata pynthKeys)
external
onlyOwner
{
require(requiredPynthAndInverseNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
for (uint i = 0; i < requiredPynthAndInverseNamesInResolver.length; i++) {
bytes32 pynth = requiredPynthAndInverseNamesInResolver[i][0];
bytes32 iPynth = requiredPynthAndInverseNamesInResolver[i][1];
if (!_shortablePynths.contains(pynth)) {
_shortablePynths.add(pynth);
pynthToInversePynth[pynth] = iPynth;
emit ShortablePynthAdded(pynth);
state.addShortCurrency(pynthKeys[i]);
}
}
rebuildCache();
}
function areShortablePynthsSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
require(requiredPynthNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
if (_shortablePynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
bytes32 pynthName = requiredPynthNamesInResolver[i];
if (!_shortablePynths.contains(pynthName) || pynthToInversePynth[pynthName] == bytes32(0)) {
return false;
}
}
for (uint i = 0; i < pynthKeys.length; i++) {
if (state.getShortRatesLength(pynthKeys[i]) == 0) {
return false;
}
}
return true;
}
function areShortablePynthsSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
require(requiredPynthNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
if (_shortablePynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
bytes32 pynthName = requiredPynthNamesInResolver[i];
if (!_shortablePynths.contains(pynthName) || pynthToInversePynth[pynthName] == bytes32(0)) {
return false;
}
}
for (uint i = 0; i < pynthKeys.length; i++) {
if (state.getShortRatesLength(pynthKeys[i]) == 0) {
return false;
}
}
return true;
}
function areShortablePynthsSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
require(requiredPynthNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
if (_shortablePynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
bytes32 pynthName = requiredPynthNamesInResolver[i];
if (!_shortablePynths.contains(pynthName) || pynthToInversePynth[pynthName] == bytes32(0)) {
return false;
}
}
for (uint i = 0; i < pynthKeys.length; i++) {
if (state.getShortRatesLength(pynthKeys[i]) == 0) {
return false;
}
}
return true;
}
function areShortablePynthsSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
require(requiredPynthNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
if (_shortablePynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
bytes32 pynthName = requiredPynthNamesInResolver[i];
if (!_shortablePynths.contains(pynthName) || pynthToInversePynth[pynthName] == bytes32(0)) {
return false;
}
}
for (uint i = 0; i < pynthKeys.length; i++) {
if (state.getShortRatesLength(pynthKeys[i]) == 0) {
return false;
}
}
return true;
}
function areShortablePynthsSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
require(requiredPynthNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
if (_shortablePynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
bytes32 pynthName = requiredPynthNamesInResolver[i];
if (!_shortablePynths.contains(pynthName) || pynthToInversePynth[pynthName] == bytes32(0)) {
return false;
}
}
for (uint i = 0; i < pynthKeys.length; i++) {
if (state.getShortRatesLength(pynthKeys[i]) == 0) {
return false;
}
}
return true;
}
function areShortablePynthsSet(bytes32[] calldata requiredPynthNamesInResolver, bytes32[] calldata pynthKeys)
external
view
returns (bool)
{
require(requiredPynthNamesInResolver.length == pynthKeys.length, "Input array length mismatch");
if (_shortablePynths.elements.length != requiredPynthNamesInResolver.length) {
return false;
}
for (uint i = 0; i < requiredPynthNamesInResolver.length; i++) {
bytes32 pynthName = requiredPynthNamesInResolver[i];
if (!_shortablePynths.contains(pynthName) || pynthToInversePynth[pynthName] == bytes32(0)) {
return false;
}
}
for (uint i = 0; i < pynthKeys.length; i++) {
if (state.getShortRatesLength(pynthKeys[i]) == 0) {
return false;
}
}
return true;
}
function removeShortablePynths(bytes32[] calldata pynths) external onlyOwner {
for (uint i = 0; i < pynths.length; i++) {
if (_shortablePynths.contains(pynths[i])) {
_shortablePynths.remove(pynths[i]);
bytes32 pynthKey = _pynth(pynths[i]).currencyKey();
state.removeShortCurrency(pynthKey);
delete pynthToInversePynth[pynths[i]];
emit ShortablePynthRemoved(pynths[i]);
}
}
}
function removeShortablePynths(bytes32[] calldata pynths) external onlyOwner {
for (uint i = 0; i < pynths.length; i++) {
if (_shortablePynths.contains(pynths[i])) {
_shortablePynths.remove(pynths[i]);
bytes32 pynthKey = _pynth(pynths[i]).currencyKey();
state.removeShortCurrency(pynthKey);
delete pynthToInversePynth[pynths[i]];
emit ShortablePynthRemoved(pynths[i]);
}
}
}
function removeShortablePynths(bytes32[] calldata pynths) external onlyOwner {
for (uint i = 0; i < pynths.length; i++) {
if (_shortablePynths.contains(pynths[i])) {
_shortablePynths.remove(pynths[i]);
bytes32 pynthKey = _pynth(pynths[i]).currencyKey();
state.removeShortCurrency(pynthKey);
delete pynthToInversePynth[pynths[i]];
emit ShortablePynthRemoved(pynths[i]);
}
}
}
function updateBorrowRates(uint rate) external onlyCollateral {
state.updateBorrowRates(rate);
}
function updateShortRates(bytes32 currency, uint rate) external onlyCollateral {
state.updateShortRates(currency, rate);
}
function incrementLongs(bytes32 pynth, uint amount) external onlyCollateral {
state.incrementLongs(pynth, amount);
}
function decrementLongs(bytes32 pynth, uint amount) external onlyCollateral {
state.decrementLongs(pynth, amount);
}
function incrementShorts(bytes32 pynth, uint amount) external onlyCollateral {
state.incrementShorts(pynth, amount);
}
function decrementShorts(bytes32 pynth, uint amount) external onlyCollateral {
state.decrementShorts(pynth, amount);
}
modifier onlyCollateral {
bool isMultiCollateral = hasCollateral(msg.sender);
require(isMultiCollateral, "Only collateral contracts");
_;
}
event LiquidationPenaltyUpdated(uint liquidationPenalty);
event BaseBorrowRateUpdated(uint baseBorrowRate);
event BaseShortRateUpdated(uint baseShortRate);
event CollateralAdded(address collateral);
event CollateralRemoved(address collateral);
event PynthAdded(bytes32 pynth);
event PynthRemoved(bytes32 pynth);
event ShortablePynthAdded(bytes32 pynth);
event ShortablePynthRemoved(bytes32 pynth);
event MaxDebtUpdated(uint maxDebt);
}
| 3,441,103 |
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
pragma abicoder v2;
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/math/SafeMath.sol";
import "./interfaces/ISupportChildren.sol";
import "./Swap.sol";
contract SupportChildren is Ownable, ISupportChildren {
using SafeMath for uint;
using SafeERC20 for IERC20;
constructor() {
admin = msg.sender;
isOrganization[msg.sender] = true;
allowedCurrencies[0x0000000000000000000000000000000000000000] = true;
allowedCurrencies[0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984] = true;
allowedCurrencies[0xc7AD46e0b8a400Bb3C915120d284AafbA8fc4735] = true; // allow to recieve DAI
}
Swap public swap = new Swap();
mapping (address => bool) public allowedCurrencies;
mapping (uint => mapping(address => uint)) public donor_contributions;
mapping(uint=>uint) public campaign_contributions; // second is for campaigns contribution
mapping(address => uint) public raisedAmount;
mapping(uint => uint) public farmingSupply;
uint public totalSupply;
Campaign[] public campaigns;
address private constant UNISWAP_V2_ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
address public admin;
mapping (address => bool) public isOrganization;
mapping (uint => address[]) public campaign_contributors;
modifier conditions(address organization, address _cryptocurrency, uint _endTimestamp){
require(isOrganization[organization] == true, "SupportChildren::createCampaign: Register your organization before creating campaign");
require(_endTimestamp > block.timestamp, "SupportChildren::createCampaign: Campaign must end in the future");
require(allowedCurrencies[_cryptocurrency] == true, "SupportChildren::createCampaign: Campaigns don't accept this currency for now. See our allowed currencies!");
_;
}
modifier valid(uint _campaignId, uint _amount) {
require(_campaignId < campaigns.length, "SupportChildren::donate/donateETH: Non existent campaign id provided");
require(isCampaignActive(_campaignId), "SupportChildren::donate/donateETH: Campaign not active");
require(!isCompleted(_campaignId),"SupportChildren::donate/donateETH: Campaing is completed");
require(_amount > 0, "SupportChildren::donate: You must send some amount/ether");
_;
}
modifier restricted(uint _campaignId) {
require(!isCompleted(_campaignId),"SupportChildren::finalPayment: Campaign is completed");
require(campaign_contributions[_campaignId] >= (campaigns[_campaignId].goal * 7 / 10), "SupportChildren::finalPayment: Minimum goal not reached"); // So this is to ensure us that we can call finalPayment when minimalGoal is reached
_;
}
modifier refund(uint _campaignId, address _from){
require(!isCompleted(_campaignId),"SupportChildren::getRefund: Campaign is completed");
require(campaign_contributions[_campaignId] < (campaigns[_campaignId].goal * 7 / 10), "SupportChildren::getRefund: Minimum goal is reached"); // So this is to ensure us that we can call finalPayment when minimalGoal is reached
require(donor_contributions[_campaignId][_from] > 0, "SupportChildren::getRefund: You haven't donated for this campaign");
_;
}
function approve(address organization) override external {
require(msg.sender == admin, "SupportChildren::approve: Contact us for approving your organization");
isOrganization[organization] = true;
}
function isCompleted(uint _campaignId) override public view returns(bool) {
return campaigns[_campaignId].completed;
}
function isCampaignActive(uint _campaignId) override public view returns(bool) {
return campaigns[_campaignId].endTimestamp > block.timestamp;
}
function getCampaign(uint _campaignId) override public view returns(Campaign memory) {
return campaigns[_campaignId];
}
function getCampaigns() override public view returns (Campaign[] memory) {
return campaigns;
}
function swapERC20(address _tokenIn, address _tokenOut, uint _amount, uint _campaignId,uint _goal, bool isETH) private{
uint _minimumAmount = swap.getAmountOutMin(_tokenIn, _tokenOut, _amount);
// goal is not exceeded
require(_minimumAmount + campaign_contributions[_campaignId] <= _goal, "SupportChildren::donate: Goal excedded");
// if goal is not exceeded, transfer tokens from msg.sender to this contract
IERC20(_tokenIn).transferFrom(msg.sender, address(this), _amount);
// now approve swap contract to do the swap and update contributions
IERC20(_tokenIn).approve(address(swap), _amount);
swap.swap( _tokenIn, _tokenOut, _amount, _minimumAmount, address(this),isETH);
}
function checkFinalPayment(uint _campaignId) internal{
if(campaign_contributions[_campaignId] >= 99*(campaigns[_campaignId].goal)/100){
finalPayment(_campaignId);
emit GoalReached(campaigns[_campaignId].name, _campaignId, campaign_contributions[_campaignId], campaigns[_campaignId].beneficiary, campaign_contributors[_campaignId]);
}
}
function updateERC20Contributions(uint _campaignId, uint donation, address _from) private {
donor_contributions[_campaignId][msg.sender] += donation;
campaign_contributions[_campaignId] += donation;
raisedAmount[campaigns[_campaignId].cryptocurrency] = IERC20(campaigns[_campaignId].cryptocurrency).balanceOf(address(this));
emit Donation(campaigns[_campaignId].name, _from, _campaignId, donation, campaigns[_campaignId].cryptocurrency, campaigns[_campaignId].beneficiary);
checkFinalPayment(_campaignId);
}
function updateCampaignContributors(uint _campaignId, address _from) private{
if(donor_contributions[_campaignId][_from] == 0){
campaign_contributors[_campaignId].push(_from);
}
}
function newCurrency(address _token) override external {
require(msg.sender == admin, "SupportChildren::newCurrency: Please contact admin for new currency");
allowedCurrencies[_token] = true;
}
function createCampaign(string memory name, address payable _beneficiary, uint _endTimestamp, uint _goal, address _cryptocurrency,string calldata uri) override external conditions(msg.sender, _cryptocurrency, _endTimestamp) {
address payable beneficiary;
if(_beneficiary != address(0)) {
beneficiary = _beneficiary;
}
else {
beneficiary = payable(msg.sender);
}
Campaign memory campaign = Campaign(name, msg.sender, _endTimestamp, beneficiary, false, _goal, _cryptocurrency, uri);
uint campaignId = campaigns.length;
campaigns.push(campaign);
emit CampaignCreated(campaignId, campaign);
}
function donate(uint _campaignId, address _token, uint _amount) override external valid(_campaignId, _amount) {
Campaign memory campaign = campaigns[_campaignId];
// if campaign accept eth
// 1. check if goal is not overlaped
// 2. swap to token to eth
// 3. update contributions mappings
if(campaign.cryptocurrency == address(0)){
swapERC20(_token, swap.WETH(), _amount, _campaignId, campaign.goal, true);
updateCampaignContributors(_campaignId, msg.sender);
uint donation = address(this).balance - raisedAmount[address(0)] ;
donor_contributions[_campaignId][msg.sender] += donation;
campaign_contributions[_campaignId] += donation;
raisedAmount[address(0)] = address(this).balance;
emit Donation(campaign.name, msg.sender, _campaignId, _amount, _token, campaign.beneficiary);
checkFinalPayment(_campaignId);
}
// if campaign accept ERC20
// check if _token is targeted one, no need to swap , just update contributions mappings and check final goal
// if token is not targeted one then
// 1. check if goal is not overlaped
// 2. swap to token to eth
// 3. update contributions mappings
else{
if(_token == campaign.cryptocurrency){
// 100% of goal is not exceeded
require(_amount + campaign_contributions[_campaignId] <= (campaign.goal), "SupportChildren::donate: Goal excedded");
// if goal is not exceeded, transfer tokens from msg.sender to this contract
IERC20(_token).transferFrom(msg.sender, address(this), _amount);
updateCampaignContributors(_campaignId, msg.sender);
uint donation = IERC20(_token).balanceOf(address(this)) - raisedAmount[campaign.cryptocurrency];
updateERC20Contributions(_campaignId, donation, msg.sender);
}
else{
swapERC20(_token, campaign.cryptocurrency, _amount, _campaignId, campaign.goal, false);
uint donation = IERC20(campaign.cryptocurrency).balanceOf(address(this)) - raisedAmount[campaign.cryptocurrency];
updateERC20Contributions(_campaignId, donation, msg.sender);
}
}
}
function donateETH(uint _campaignId) override external payable valid(_campaignId, msg.value) {
Campaign memory campaign = campaigns[_campaignId];
// if campaign accept eth
if(campaign.cryptocurrency == address(0)){
require(msg.value + campaign_contributions[_campaignId] <= campaign.goal, "SupportChildren::donate: Goal excedded");
updateCampaignContributors(_campaignId, msg.sender);
donor_contributions[_campaignId][msg.sender] += msg.value;
campaign_contributions[_campaignId] += msg.value;
raisedAmount[address(0)] = address(this).balance;
emit Donation(campaign.name, msg.sender, _campaignId, msg.value, address(0), campaign.beneficiary);
checkFinalPayment(_campaignId);
}
// if campaign accept ERC20
else{
uint _minimumAmount = swap.getAmountOutMin(swap.WETH(), campaign.cryptocurrency, msg.value);
// goal is not exceeded
require(_minimumAmount + campaign_contributions[_campaignId] <= campaign.goal,"SupportChildren::donate: Goal excedded");
address[] memory path = new address[](2);
path[0] = swap.WETH();
path[1] = campaign.cryptocurrency;
IUniswapV2Router(UNISWAP_V2_ROUTER).swapExactETHForTokensSupportingFeeOnTransferTokens{value:(msg.value)}(_minimumAmount, path, address(this), block.timestamp);
updateCampaignContributors(_campaignId, msg.sender);
uint donation = IERC20(campaign.cryptocurrency).balanceOf(address(this)) - raisedAmount[campaign.cryptocurrency];
updateERC20Contributions(_campaignId, donation, msg.sender);
}
}
function finalPayment(uint _campaignId) override public payable restricted(_campaignId) {
if(campaigns[_campaignId].cryptocurrency == address(0)){
payable(campaigns[_campaignId].beneficiary).transfer(campaign_contributions[_campaignId] - farmingSupply[_campaignId]);
campaigns[_campaignId].completed = true;
raisedAmount[address(0)] = address(this).balance;
}
else{
IERC20(campaigns[_campaignId].cryptocurrency).transfer(campaigns[_campaignId].beneficiary,campaign_contributions[_campaignId] - farmingSupply[_campaignId]);
campaigns[_campaignId].completed = true;
raisedAmount[campaigns[_campaignId].cryptocurrency] = IERC20(campaigns[_campaignId].cryptocurrency).balanceOf(address(this));
}
}
function getRefund(uint _campaignId) override external payable refund(_campaignId, msg.sender){
if(campaigns[_campaignId].cryptocurrency == address(0)){
payable(msg.sender).transfer(donor_contributions[_campaignId][msg.sender]);
campaign_contributions[_campaignId] -= donor_contributions[_campaignId][msg.sender];
donor_contributions[_campaignId][msg.sender] = 0;
raisedAmount[address(0)] = address(this).balance;
if(campaign_contributions[_campaignId] == 0){
campaigns[_campaignId].completed = true;
}
}
else{
IERC20(campaigns[_campaignId].cryptocurrency).transfer(msg.sender, donor_contributions[_campaignId][msg.sender]);
campaign_contributions[_campaignId] -= donor_contributions[_campaignId][msg.sender];
donor_contributions[_campaignId][msg.sender] = 0;
raisedAmount[campaigns[_campaignId].cryptocurrency] = IERC20(campaigns[_campaignId].cryptocurrency).balanceOf(address(this));
if(campaign_contributions[_campaignId] == 0){
campaigns[_campaignId].completed = true;
}
}
}
function getFundsForFarming(uint _campaignId) external payable{
require(isOrganization[msg.sender] == true, "SupportChildren::getFundsForFarming: Only organization can get funds for farming");
uint current_amount = campaign_contributions[_campaignId] - farmingSupply[_campaignId];
if(campaigns[_campaignId].cryptocurrency == address(0)){
payable(campaigns[_campaignId].beneficiary).transfer(current_amount);
farmingSupply[_campaignId] += current_amount;
totalSupply += current_amount;
raisedAmount[address(0)] = address(this).balance;
}
else{
IERC20(campaigns[_campaignId].cryptocurrency).transfer(campaigns[_campaignId].beneficiary,current_amount);
farmingSupply[_campaignId] += current_amount;
totalSupply += current_amount;
raisedAmount[campaigns[_campaignId].cryptocurrency] = IERC20(campaigns[_campaignId].cryptocurrency).balanceOf(address(this));
}
}
receive() payable external {}
}
|
if campaign accept eth 1. check if goal is not overlaped 2. swap to token to eth 3. update contributions mappings 100% of goal is not exceeded if goal is not exceeded, transfer tokens from msg.sender to this contract
|
function donate(uint _campaignId, address _token, uint _amount) override external valid(_campaignId, _amount) {
Campaign memory campaign = campaigns[_campaignId];
if(campaign.cryptocurrency == address(0)){
swapERC20(_token, swap.WETH(), _amount, _campaignId, campaign.goal, true);
updateCampaignContributors(_campaignId, msg.sender);
uint donation = address(this).balance - raisedAmount[address(0)] ;
donor_contributions[_campaignId][msg.sender] += donation;
campaign_contributions[_campaignId] += donation;
raisedAmount[address(0)] = address(this).balance;
emit Donation(campaign.name, msg.sender, _campaignId, _amount, _token, campaign.beneficiary);
checkFinalPayment(_campaignId);
}
else{
if(_token == campaign.cryptocurrency){
require(_amount + campaign_contributions[_campaignId] <= (campaign.goal), "SupportChildren::donate: Goal excedded");
IERC20(_token).transferFrom(msg.sender, address(this), _amount);
updateCampaignContributors(_campaignId, msg.sender);
uint donation = IERC20(_token).balanceOf(address(this)) - raisedAmount[campaign.cryptocurrency];
updateERC20Contributions(_campaignId, donation, msg.sender);
}
else{
swapERC20(_token, campaign.cryptocurrency, _amount, _campaignId, campaign.goal, false);
uint donation = IERC20(campaign.cryptocurrency).balanceOf(address(this)) - raisedAmount[campaign.cryptocurrency];
updateERC20Contributions(_campaignId, donation, msg.sender);
}
}
}
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./full_match/80001/0x1Ba56Ed6e79AFB83600A5EE76E7472CfD3f18531/sources/NFTstakingRC.sol
|
Interfaces for ERC20 and ERC721 Constructor function to set the rewards token and the NFT collection addresses
|
contract ERC721Staking is ReentrancyGuard {
using SafeERC20 for IERC20;
IERC20 public immutable rewardsToken;
IERC721 public immutable nftCollection;
pragma solidity ^0.8.4;
constructor(IERC721 _nftCollection, IERC20 _rewardsToken) {
nftCollection = _nftCollection;
rewardsToken = _rewardsToken;
}
struct StakedToken {
address staker;
uint256 tokenId;
}
struct Staker {
uint256 amountStaked;
StakedToken[] stakedTokens;
uint256 timeOfLastUpdate;
uint256 unclaimedRewards;
}
uint256 private rewardsPerHour = 10;
mapping(address => Staker) public stakers;
mapping(uint256 => address) public stakerAddress;
function stake(uint256 _tokenId) external nonReentrant {
if (stakers[msg.sender].amountStaked > 0) {
uint256 rewards = calculateRewards(msg.sender);
stakers[msg.sender].unclaimedRewards += rewards;
}
nftCollection.ownerOf(_tokenId) == msg.sender,
"You don't own this token!"
);
}
function stake(uint256 _tokenId) external nonReentrant {
if (stakers[msg.sender].amountStaked > 0) {
uint256 rewards = calculateRewards(msg.sender);
stakers[msg.sender].unclaimedRewards += rewards;
}
nftCollection.ownerOf(_tokenId) == msg.sender,
"You don't own this token!"
);
}
require(
nftCollection.transferFrom(msg.sender, address(this), _tokenId);
StakedToken memory stakedToken = StakedToken(msg.sender, _tokenId);
stakers[msg.sender].stakedTokens.push(stakedToken);
stakers[msg.sender].amountStaked++;
stakerAddress[_tokenId] = msg.sender;
stakers[msg.sender].timeOfLastUpdate = block.timestamp;
function withdraw(uint256 _tokenId) external nonReentrant {
require(
stakers[msg.sender].amountStaked > 0,
"You have no tokens staked"
);
require(stakerAddress[_tokenId] == msg.sender, "You don't own this token!");
uint256 rewards = calculateRewards(msg.sender);
stakers[msg.sender].unclaimedRewards += rewards;
uint256 index = 0;
for (uint256 i = 0; i < stakers[msg.sender].stakedTokens.length; i++) {
if (stakers[msg.sender].stakedTokens[i].tokenId == _tokenId) {
index = i;
break;
}
}
}
function withdraw(uint256 _tokenId) external nonReentrant {
require(
stakers[msg.sender].amountStaked > 0,
"You have no tokens staked"
);
require(stakerAddress[_tokenId] == msg.sender, "You don't own this token!");
uint256 rewards = calculateRewards(msg.sender);
stakers[msg.sender].unclaimedRewards += rewards;
uint256 index = 0;
for (uint256 i = 0; i < stakers[msg.sender].stakedTokens.length; i++) {
if (stakers[msg.sender].stakedTokens[i].tokenId == _tokenId) {
index = i;
break;
}
}
}
function withdraw(uint256 _tokenId) external nonReentrant {
require(
stakers[msg.sender].amountStaked > 0,
"You have no tokens staked"
);
require(stakerAddress[_tokenId] == msg.sender, "You don't own this token!");
uint256 rewards = calculateRewards(msg.sender);
stakers[msg.sender].unclaimedRewards += rewards;
uint256 index = 0;
for (uint256 i = 0; i < stakers[msg.sender].stakedTokens.length; i++) {
if (stakers[msg.sender].stakedTokens[i].tokenId == _tokenId) {
index = i;
break;
}
}
}
stakers[msg.sender].stakedTokens[index].staker = address(0);
stakers[msg.sender].amountStaked--;
stakerAddress[_tokenId] = address(0);
nftCollection.transferFrom(address(this), msg.sender, _tokenId);
stakers[msg.sender].timeOfLastUpdate = block.timestamp;
function claimRewards() external {
uint256 rewards = calculateRewards(msg.sender) +
stakers[msg.sender].unclaimedRewards;
require(rewards > 0, "You have no rewards to claim");
stakers[msg.sender].timeOfLastUpdate = block.timestamp;
stakers[msg.sender].unclaimedRewards = 0;
rewardsToken.safeTransfer(msg.sender, rewards);
}
function availableRewards(address _staker) public view returns (uint256) {
uint256 rewards = calculateRewards(_staker) +
stakers[_staker].unclaimedRewards;
return rewards;
}
function getStakedTokens(address _user) public view returns (StakedToken[] memory) {
if (stakers[_user].amountStaked > 0) {
StakedToken[] memory _stakedTokens = new StakedToken[](stakers[_user].amountStaked);
uint256 _index = 0;
for (uint256 j = 0; j < stakers[_user].stakedTokens.length; j++) {
if (stakers[_user].stakedTokens[j].staker != (address(0))) {
_stakedTokens[_index] = stakers[_user].stakedTokens[j];
_index++;
}
}
return _stakedTokens;
}
else {
return new StakedToken[](0);
}
}
function getStakedTokens(address _user) public view returns (StakedToken[] memory) {
if (stakers[_user].amountStaked > 0) {
StakedToken[] memory _stakedTokens = new StakedToken[](stakers[_user].amountStaked);
uint256 _index = 0;
for (uint256 j = 0; j < stakers[_user].stakedTokens.length; j++) {
if (stakers[_user].stakedTokens[j].staker != (address(0))) {
_stakedTokens[_index] = stakers[_user].stakedTokens[j];
_index++;
}
}
return _stakedTokens;
}
else {
return new StakedToken[](0);
}
}
function getStakedTokens(address _user) public view returns (StakedToken[] memory) {
if (stakers[_user].amountStaked > 0) {
StakedToken[] memory _stakedTokens = new StakedToken[](stakers[_user].amountStaked);
uint256 _index = 0;
for (uint256 j = 0; j < stakers[_user].stakedTokens.length; j++) {
if (stakers[_user].stakedTokens[j].staker != (address(0))) {
_stakedTokens[_index] = stakers[_user].stakedTokens[j];
_index++;
}
}
return _stakedTokens;
}
else {
return new StakedToken[](0);
}
}
function getStakedTokens(address _user) public view returns (StakedToken[] memory) {
if (stakers[_user].amountStaked > 0) {
StakedToken[] memory _stakedTokens = new StakedToken[](stakers[_user].amountStaked);
uint256 _index = 0;
for (uint256 j = 0; j < stakers[_user].stakedTokens.length; j++) {
if (stakers[_user].stakedTokens[j].staker != (address(0))) {
_stakedTokens[_index] = stakers[_user].stakedTokens[j];
_index++;
}
}
return _stakedTokens;
}
else {
return new StakedToken[](0);
}
}
function getStakedTokens(address _user) public view returns (StakedToken[] memory) {
if (stakers[_user].amountStaked > 0) {
StakedToken[] memory _stakedTokens = new StakedToken[](stakers[_user].amountStaked);
uint256 _index = 0;
for (uint256 j = 0; j < stakers[_user].stakedTokens.length; j++) {
if (stakers[_user].stakedTokens[j].staker != (address(0))) {
_stakedTokens[_index] = stakers[_user].stakedTokens[j];
_index++;
}
}
return _stakedTokens;
}
else {
return new StakedToken[](0);
}
}
function calculateRewards(address _staker)
internal
view
returns (uint256 _rewards)
{
return (((
((block.timestamp - stakers[_staker].timeOfLastUpdate) *
stakers[_staker].amountStaked)
) * rewardsPerHour) / 5);
}
}
| 5,600,632 |
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pragma solidity ^0.7.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* @title InversePunks contract
* @dev Extends ERC721 Non-Fungible Token Standard basic implementation
*/
contract InversePunks is ERC721, Ownable {
using SafeMath for uint256;
string public IPUNKS_PROVENANCE = "";
uint256 public constant punkPrice = 10000000000000000; // 0.01 ETH
uint public constant maxPunkPurchase = 20;
uint256 public MAX_PUNKS = 10000;
constructor(string memory name, string memory symbol) ERC721(name, symbol) {
_setBaseURI('ipfs://QmToARS85mrzoFuKQHCXkBAw756ermfE43GdyHABLWgkyX/');
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
msg.sender.transfer(balance);
}
/**
* Set some Punks aside
*/
function reservePunks() public onlyOwner {
uint supply = totalSupply();
uint i;
for (i = 0; i < 30; i++) {
_safeMint(msg.sender, supply + i);
}
}
/*
* Set provenance once it's calculated
*/
function setProvenanceHash(string memory provenanceHash) public onlyOwner {
IPUNKS_PROVENANCE = provenanceHash;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
/**
* Mints Punks
*/
function mintPunk(uint numberOfTokens) public payable {
require(numberOfTokens <= maxPunkPurchase, "Can only mint 20 tokens at a time");
require(totalSupply().add(numberOfTokens) <= MAX_PUNKS, "Purchase would exceed max supply of Punks");
require(punkPrice.mul(numberOfTokens) <= msg.value, "Ether value sent is not correct");
for(uint i = 0; i < numberOfTokens; i++) {
uint mintIndex = totalSupply();
if (totalSupply() < MAX_PUNKS) {
_safeMint(msg.sender, mintIndex);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../../utils/Context.sol";
import "./IERC721.sol";
import "./IERC721Metadata.sol";
import "./IERC721Enumerable.sol";
import "./IERC721Receiver.sol";
import "../../introspection/ERC165.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
import "../../utils/EnumerableSet.sol";
import "../../utils/EnumerableMap.sol";
import "../../utils/Strings.sol";
/**
* @title ERC721 Non-Fungible Token Standard basic implementation
* @dev see https://eips.ethereum.org/EIPS/eip-721
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using SafeMath for uint256;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
// Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
// which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
// Mapping from holder address to their (enumerable) set of owned tokens
mapping (address => EnumerableSet.UintSet) private _holderTokens;
// Enumerable mapping from token ids to their owners
EnumerableMap.UintToAddressMap private _tokenOwners;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
// Base URI
string private _baseURI;
/*
* bytes4(keccak256('balanceOf(address)')) == 0x70a08231
* bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
* bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
* bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
* bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
* bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
* bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
* bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
* bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
*
* => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
* 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
*/
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
/*
* bytes4(keccak256('name()')) == 0x06fdde03
* bytes4(keccak256('symbol()')) == 0x95d89b41
* bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
*
* => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
*/
bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
/*
* bytes4(keccak256('totalSupply()')) == 0x18160ddd
* bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
* bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
*
* => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
*/
bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor (string memory name_, string memory symbol_) public {
_name = name_;
_symbol = symbol_;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_INTERFACE_ID_ERC721);
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
_registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
// If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
return string(abi.encodePacked(base, tokenId.toString()));
}
/**
* @dev Returns the base URI set via {_setBaseURI}. This will be
* automatically added as a prefix in {tokenURI} to each token's URI, or
* to the token ID if no specific URI is set for that token ID.
*/
function baseURI() public view virtual returns (string memory) {
return _baseURI;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
return _holderTokens[owner].at(index);
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
// _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
return _tokenOwners.length();
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _tokenOwners.contains(tokenId);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
d*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId); // internal owner
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(tokenId);
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Internal function to set the base URI for all token IDs. It is
* automatically added as a prefix to the value returned in {tokenURI},
* or to the token ID if {tokenURI} is empty.
*/
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (!to.isContract()) {
return true;
}
bytes memory returndata = to.functionCall(abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
), "ERC721: transfer to non ERC721Receiver implementer");
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == _ERC721_RECEIVED);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
import "../../introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
import "./IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
import "./IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
*/
abstract contract ERC165 is IERC165 {
/*
* bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
*/
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
/**
* @dev Mapping of interface ids to whether or not it's supported.
*/
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () internal {
// Derived contracts need only register support for their own interfaces,
// we register support for ERC165 itself here
_registerInterface(_INTERFACE_ID_ERC165);
}
/**
* @dev See {IERC165-supportsInterface}.
*
* Time complexity O(1), guaranteed to always use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return _supportedInterfaces[interfaceId];
}
/**
* @dev Registers the contract as an implementer of the interface defined by
* `interfaceId`. Support of the actual ERC165 interface is automatic and
* registering its interface id is not required.
*
* See {IERC165-supportsInterface}.
*
* Requirements:
*
* - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
*/
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Library for managing an enumerable variant of Solidity's
* https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
* type.
*
* Maps have the following properties:
*
* - Entries are added, removed, and checked for existence in constant time
* (O(1)).
* - Entries are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableMap for EnumerableMap.UintToAddressMap;
*
* // Declare a set state variable
* EnumerableMap.UintToAddressMap private myMap;
* }
* ```
*
* As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
* supported.
*/
library EnumerableMap {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses private functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
// Storage of map keys and values
MapEntry[] _entries;
// Position of the entry defined by a key in the `entries` array, plus 1
// because index 0 means a key is not in the map.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) { // Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
// The entry is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function _remove(Map storage map, bytes32 key) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) { // Equivalent to contains(map, key)
// To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
// in the array, and then remove the last entry (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
// When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
MapEntry storage lastEntry = map._entries[lastIndex];
// Move the last entry to the index where the entry to delete is
map._entries[toDeleteIndex] = lastEntry;
// Update the index for the moved entry
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved entry was stored
map._entries.pop();
// Delete the index for the deleted slot
delete map._indexes[key];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {_tryGet}.
*/
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
// UintToAddressMap
struct UintToAddressMap {
Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*
* _Available since v3.4._
*/
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev String operations.
*/
library Strings {
/**
* @dev Converts a `uint256` to its ASCII `string` representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
uint256 index = digits - 1;
temp = value;
while (temp != 0) {
buffer[index--] = bytes1(uint8(48 + temp % 10));
temp /= 10;
}
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
|
* Set some Punks aside/
|
function reservePunks() public onlyOwner {
uint supply = totalSupply();
uint i;
for (i = 0; i < 30; i++) {
_safeMint(msg.sender, supply + i);
}
}
| 9,958,662 |
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;
// mint 19
// spookeys 21
// 21 - 24 claiming
// 24th reveal
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "./SK.sol";
import "./SBCC.sol";
// .-') _ (`-. .-. .-') .-. .-') .-')
// ( OO ). ( (OO ) \ ( OO ) \ ( OO ) ( OO ).
// (_)---\_)_.` \ .-'),-----. .-'),-----. ,--. ,--. ,--. ,--. ;-----.\ .-'),-----. ,--. ,--.(_)---\_)
// / _ |(__...--''( OO' .-. '( OO' .-. '| .' / \ `.' / | .-. | ( OO' .-. ' \ `.' / / _ |
// \ :` `. | / | |/ | | | |/ | | | || /, .-') / | '-' /_)/ | | | | .-') / \ :` `.
// '..`''.)| |_.' |\_) | |\| |\_) | |\| || ' _)(OO \ / | .-. `. \_) | |\| |(OO \ / '..`''.)
// .-._) \| .___.' \ | | | | \ | | | || . \ | / /\_ | | \ | \ | | | | | / /\_ .-._) \
// \ /| | `' '-' ' `' '-' '| |\ \ `-./ /.__) | '--' / `' '-' ' `-./ /.__) \ /
// `-----' `--' `-----' `-----' `--' '--' `--' `------' `-----' `--' `-----'
// Created By: Lorenzo
contract SpookyBoysMansionParty is ERC721Enumerable, Ownable, ReentrancyGuard {
using SafeMath for uint256;
using Counters for Counters.Counter;
SK private immutable sk;
SBCC private immutable sbcc;
uint256 public constant BRONZE_KEY_ID = 1;
uint256 public constant SILVER_KEY_ID = 69;
uint256 public constant GOLD_KEY_ID = 420;
uint256 public constant BRONZE_KEY_REQ_AMOUNT = 2;
uint256 public constant RARE_KEY_REQ_AMOUNT = 1;
uint256 public constant PUBLIC_MINT_OFFSET = 13000;
uint256 public constant MAX_PUBLIC_MINT = 4444;
uint256 public constant MAX_PER_PURCHASE = 10;
uint256 public constant PRICE_PER_MANSION_SPOOKY = 130000000000000000; // 0.13 ETH
string private baseURI;
bool public mansionOpen = false;
bool public publicSaleActive = false;
Counters.Counter private _tokenIdCounter;
event KeyUsed(uint256 keyId, uint256 spookyBoyId);
event SpookyMinted(uint256 mansionSpookyId);
constructor(
string memory name,
string memory symbol,
string memory uri,
address spooKeyContract,
address sbccContract) ERC721(name, symbol) {
baseURI = uri;
sk = SK(spooKeyContract);
sbcc = SBCC(sbccContract);
}
function startPublicSale() external onlyOwner {
require(!publicSaleActive, "The public sale is already active.");
publicSaleActive = true;
}
function pausePublicSale() external onlyOwner {
require(publicSaleActive, "The public sale is already paused.");
publicSaleActive = false;
}
function openMansion() external onlyOwner {
require(!mansionOpen, "The time machine is already ON.");
mansionOpen = true;
}
function closeMansion() external onlyOwner {
require(mansionOpen, "The time machine is already OFF.");
mansionOpen = false;
}
function mintMansionSpooky(uint256 numberOfMansionSpookyBoys) external payable nonReentrant{
require(publicSaleActive, "You cannot buy a Mansion Spooky Boy yet. Hold tight.");
require(numberOfMansionSpookyBoys > 0, "You cannot mint 0 Mansion Spookies.");
require(SafeMath.add(_tokenIdCounter.current(), numberOfMansionSpookyBoys) <= MAX_PUBLIC_MINT, "Exceeds maximum supply.");
require(numberOfMansionSpookyBoys <= MAX_PER_PURCHASE, "Exceeds maximum Spooky Boys in one transaction.");
require(getNFTPrice(numberOfMansionSpookyBoys) <= msg.value, "Amount of Ether sent is not correct.");
for(uint i = 0; i < numberOfMansionSpookyBoys; i++){
uint256 tokenIndex = _tokenIdCounter.current() + PUBLIC_MINT_OFFSET;
_tokenIdCounter.increment();
_safeMint(msg.sender, tokenIndex);
emit SpookyMinted(tokenIndex);
}
}
function enterMansionParty(uint256 keyId, uint256 spookyBoyId) external nonReentrant {
require(mansionOpen, "The mansion is not open yet. We will notify you when you can enter.");
require(sbcc.ownerOf(spookyBoyId) == msg.sender, "You don't own this Spooky Boy.");
require(!_exists(spookyBoyId), "This Spooky Boy has already entered the mansion party.");
uint256 requiredAmount = keyId == BRONZE_KEY_ID ? BRONZE_KEY_REQ_AMOUNT : RARE_KEY_REQ_AMOUNT;
require(
sk.balanceOf(msg.sender, keyId) >= requiredAmount,
"You do not own enough of the key you are trying to use.");
sk.burnKey(msg.sender, keyId, requiredAmount);
_safeMint(msg.sender, spookyBoyId);
emit KeyUsed(keyId, spookyBoyId);
}
function getNFTPrice(uint256 amount) public pure returns (uint256) {
return SafeMath.mul(amount, PRICE_PER_MANSION_SPOOKY);
}
function airdropMansionSpooky(uint256 numberOfMansionSpookyBoys) external onlyOwner{
require(numberOfMansionSpookyBoys > 0, "You cannot mint 0 Mansion Spookies.");
require(numberOfMansionSpookyBoys <= 15, "You can only airdrop 15 Mansion Spookies.");
require(SafeMath.add(_tokenIdCounter.current(), numberOfMansionSpookyBoys) <= MAX_PUBLIC_MINT, "Exceeds maximum supply.");
for(uint i = 0; i < numberOfMansionSpookyBoys; i++){
uint256 tokenIndex = _tokenIdCounter.current() + PUBLIC_MINT_OFFSET;
_tokenIdCounter.increment();
_safeMint(msg.sender, tokenIndex);
emit SpookyMinted(tokenIndex);
}
}
function withdraw() external onlyOwner {
uint256 balance = address(this).balance;
Address.sendValue(payable(msg.sender), balance);
}
function setBaseURI(string calldata uri) external onlyOwner {
baseURI = uri;
}
function _baseURI() internal view override returns (string memory) {
return baseURI;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;
// Created By: Lorenzo
abstract contract SK {
function burnKey(address userAddress, uint256 keyId, uint256 amount)
external
virtual;
function balanceOf(address account, uint256 id)
public
view
virtual
returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;
// Created By: Lorenzo
abstract contract SBCC {
function ownerOf(uint256 tokenId) public view virtual returns (address);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "./IERC721Enumerable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
|
Created By: Lorenzo
|
abstract contract SK {
function burnKey(address userAddress, uint256 keyId, uint256 amount)
external
virtual;
function balanceOf(address account, uint256 id)
public
view
virtual
returns (uint256);
pragma solidity ^0.8.2;
}
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./full_match/80001/0xe75DEa14d684b4D91067e6C40C159c33eF36D1AA/sources/contracts/Ignite/Tournament.sol
|
@notice Creates a prize from Registration pool
|
function createPrize(
string[] memory prizeIds,
uint256[] memory percentages
) external virtual override onlyWhenActive onlyRole(DEFAULT_ADMIN_ROLE) {
require(
prizeIds.length == percentages.length && prizeIds.length <= 16,
"WP"
);
uint256 percentSum = 0;
for (uint256 i = 0; i < prizeIds.length; i++) {
percentSum += percentages[i];
}
require(
"IV"
);
for (uint256 i = 0; i < prizeIds.length; i++) {
uint256 prizeAmt = (registrationVault.balance() * percentages[i]) /
10000;
console.log(prizeAmt);
prizes[prizeIds[i]].rewardAmount = prizeAmt;
prizes[prizeIds[i]].awarded = false;
}
registrationVault.transfer(
address(prizeVault),
(registrationVault.balance() * percentSum) / 10000
);
_prizeID = uint256(prizeIds.length);
emit eventPrizeCreated(prizeIds, percentages);
}
| 5,556,363 |
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./full_match/1/0x317625234562B1526Ea2FaC4030Ea499C5291de4/sources/contracts/token/AaveToken.sol
|
* @notice implementation of the AAVE token contract @author Aave/
|
contract AaveToken is ERC20, VersionedInitializable {
pragma solidity 0.6.10;
import {ERC20} from "../open-zeppelin/ERC20.sol";
import {ITransferHook} from "../interfaces/ITransferHook.sol";
import {VersionedInitializable} from "../utils/VersionedInitializable.sol";
struct Snapshot {
uint128 blockNumber;
uint128 value;
}
string internal constant NAME = "Aave Token";
string internal constant SYMBOL = "AAVE";
uint8 internal constant DECIMALS = 18;
uint256 public constant REVISION = 1;
mapping (address => mapping (uint256 => Snapshot)) public _snapshots;
mapping (address => uint256) public _countsSnapshots;
bytes32 public DOMAIN_SEPARATOR;
bytes public constant EIP712_REVISION = bytes("1");
bytes32 internal constant EIP712_DOMAIN = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
event SnapshotDone(address owner, uint128 oldValue, uint128 newValue);
uint256 internal constant MIGRATION_AMOUNT = 13000000 ether;
uint256 internal constant DISTRIBUTION_AMOUNT = 3000000 ether;
mapping (address => uint256) public _nonces;
ITransferHook public _aaveGovernance;
constructor() ERC20(NAME, SYMBOL) public {}
function initialize(
address migrator,
address distributor,
ITransferHook aaveGovernance
) external initializer {
uint256 chainId;
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(abi.encode(
EIP712_DOMAIN,
keccak256(bytes(NAME)),
keccak256(EIP712_REVISION),
chainId,
address(this)
));
_name = NAME;
_symbol = SYMBOL;
_setupDecimals(DECIMALS);
_aaveGovernance = aaveGovernance;
_mint(migrator, MIGRATION_AMOUNT);
_mint(distributor, DISTRIBUTION_AMOUNT);
}
function initialize(
address migrator,
address distributor,
ITransferHook aaveGovernance
) external initializer {
uint256 chainId;
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(abi.encode(
EIP712_DOMAIN,
keccak256(bytes(NAME)),
keccak256(EIP712_REVISION),
chainId,
address(this)
));
_name = NAME;
_symbol = SYMBOL;
_setupDecimals(DECIMALS);
_aaveGovernance = aaveGovernance;
_mint(migrator, MIGRATION_AMOUNT);
_mint(distributor, DISTRIBUTION_AMOUNT);
}
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external {
require(owner != address(0), "INVALID_OWNER");
require(block.timestamp <= deadline, "INVALID_EXPIRATION");
uint256 currentValidNonce = _nonces[owner];
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(PERMIT_TYPEHASH, owner, spender, value, currentValidNonce, deadline))
)
);
require(owner == ecrecover(digest, v, r, s), "INVALID_SIGNATURE");
_nonces[owner] = currentValidNonce.add(1);
_approve(owner, spender, value);
}
function getRevision() internal pure override returns (uint256) {
return REVISION;
}
function _writeSnapshot(address owner, uint128 oldValue, uint128 newValue) internal {
uint128 currentBlock = uint128(block.number);
uint256 ownerCountOfSnapshots = _countsSnapshots[owner];
mapping (uint256 => Snapshot) storage snapshotsOwner = _snapshots[owner];
if (ownerCountOfSnapshots != 0 && snapshotsOwner[ownerCountOfSnapshots.sub(1)].blockNumber == currentBlock) {
snapshotsOwner[ownerCountOfSnapshots.sub(1)].value = newValue;
snapshotsOwner[ownerCountOfSnapshots] = Snapshot(currentBlock, newValue);
_countsSnapshots[owner] = ownerCountOfSnapshots.add(1);
}
emit SnapshotDone(owner, oldValue, newValue);
}
function _writeSnapshot(address owner, uint128 oldValue, uint128 newValue) internal {
uint128 currentBlock = uint128(block.number);
uint256 ownerCountOfSnapshots = _countsSnapshots[owner];
mapping (uint256 => Snapshot) storage snapshotsOwner = _snapshots[owner];
if (ownerCountOfSnapshots != 0 && snapshotsOwner[ownerCountOfSnapshots.sub(1)].blockNumber == currentBlock) {
snapshotsOwner[ownerCountOfSnapshots.sub(1)].value = newValue;
snapshotsOwner[ownerCountOfSnapshots] = Snapshot(currentBlock, newValue);
_countsSnapshots[owner] = ownerCountOfSnapshots.add(1);
}
emit SnapshotDone(owner, oldValue, newValue);
}
} else {
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
if (from == to) {
return;
}
if (from != address(0)) {
uint256 fromBalance = balanceOf(from);
_writeSnapshot(from, uint128(fromBalance), uint128(fromBalance.sub(amount)));
}
if (to != address(0)) {
uint256 toBalance = balanceOf(to);
_writeSnapshot(to, uint128(toBalance), uint128(toBalance.add(amount)));
}
if (aaveGovernance != ITransferHook(0)) {
aaveGovernance.onTransfer(from, to, amount);
}
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
if (from == to) {
return;
}
if (from != address(0)) {
uint256 fromBalance = balanceOf(from);
_writeSnapshot(from, uint128(fromBalance), uint128(fromBalance.sub(amount)));
}
if (to != address(0)) {
uint256 toBalance = balanceOf(to);
_writeSnapshot(to, uint128(toBalance), uint128(toBalance.add(amount)));
}
if (aaveGovernance != ITransferHook(0)) {
aaveGovernance.onTransfer(from, to, amount);
}
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
if (from == to) {
return;
}
if (from != address(0)) {
uint256 fromBalance = balanceOf(from);
_writeSnapshot(from, uint128(fromBalance), uint128(fromBalance.sub(amount)));
}
if (to != address(0)) {
uint256 toBalance = balanceOf(to);
_writeSnapshot(to, uint128(toBalance), uint128(toBalance.add(amount)));
}
if (aaveGovernance != ITransferHook(0)) {
aaveGovernance.onTransfer(from, to, amount);
}
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
if (from == to) {
return;
}
if (from != address(0)) {
uint256 fromBalance = balanceOf(from);
_writeSnapshot(from, uint128(fromBalance), uint128(fromBalance.sub(amount)));
}
if (to != address(0)) {
uint256 toBalance = balanceOf(to);
_writeSnapshot(to, uint128(toBalance), uint128(toBalance.add(amount)));
}
if (aaveGovernance != ITransferHook(0)) {
aaveGovernance.onTransfer(from, to, amount);
}
}
ITransferHook aaveGovernance = _aaveGovernance;
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
if (from == to) {
return;
}
if (from != address(0)) {
uint256 fromBalance = balanceOf(from);
_writeSnapshot(from, uint128(fromBalance), uint128(fromBalance.sub(amount)));
}
if (to != address(0)) {
uint256 toBalance = balanceOf(to);
_writeSnapshot(to, uint128(toBalance), uint128(toBalance.add(amount)));
}
if (aaveGovernance != ITransferHook(0)) {
aaveGovernance.onTransfer(from, to, amount);
}
}
}
| 16,467,593 |
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pragma solidity 0.6.12;
import "./ERC20Interface.sol";
import "./IPToken.sol";
import "../libs/Exponential.sol";
import "../libs/ErrorReporter.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
contract PERC20Optimism is IPToken, Exponential, TokenErrorReporter, OwnableUpgradeable {
using SafeMath for uint256;
address public underlying;
function initialize(address underlying_, string memory name_, string memory symbol_, uint8 decimals_, uint256 initialExchangeRateMantissa_) public initializer {
OwnableUpgradeable.__Ownable_init();
initialExchangeRateMantissa = initialExchangeRateMantissa_;
accrualBlockNumber = getBlockNumber();
borrowIndex = mantissaOne;
name = name_;
symbol = symbol_;
decimals = decimals_;
underlying = underlying_;
_notEntered = true;
}
/**
* @notice Transfer `tokens` tokens from `src` to `dst` by `spender`
* @dev Called by both `transfer` and `transferFrom` internally
* @param spender The address of the account performing the transfer
* @param src The address of the source account
* @param dst The address of the destination account
* @param tokens The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferTokens(address spender, address src, address dst, uint tokens) internal returns (uint) {
uint allowed = comptroller.transferAllowed(address(this), src, dst, tokens);
if (allowed != 0) {
return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.TRANSFER_COMPTROLLER_REJECTION, allowed);
}
if (src == dst) {
return fail(Error.BAD_INPUT, FailureInfo.TRANSFER_NOT_ALLOWED);
}
uint startingAllowance = 0;
if (spender == src) {
startingAllowance = uint(- 1);
} else {
startingAllowance = transferAllowances[src][spender];
}
uint allowanceNew = startingAllowance.sub(tokens);
uint srcTokensNew = accountTokens[src].sub(tokens);
uint dstTokensNew = accountTokens[dst].add(tokens);
accountTokens[src] = srcTokensNew;
accountTokens[dst] = dstTokensNew;
if (startingAllowance != uint(- 1)) {
transferAllowances[src][spender] = allowanceNew;
}
emit Transfer(src, dst, tokens);
return 0;
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint256 amount) external override nonReentrant returns (bool) {
return transferTokens(msg.sender, msg.sender, dst, amount) == 0;
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint256 amount) external override nonReentrant returns (bool) {
return transferTokens(msg.sender, src, dst, amount) == 0;
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved (-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint256 amount) external override returns (bool) {
address src = msg.sender;
transferAllowances[src][spender] = amount;
emit Approval(src, spender, amount);
return true;
}
/**
* @notice Get the current allowance from `owner` for `spender`
* @param owner The address of the account which owns the tokens to be spent
* @param spender The address of the account which may transfer tokens
* @return The number of tokens allowed to be spent (-1 means infinite)
*/
function allowance(address owner, address spender) external override view returns (uint256) {
return transferAllowances[owner][spender];
}
/**
* @notice Get the token balance of the `owner`
* @param owner The address of the account to query
* @return The number of tokens owned by `owner`
*/
function balanceOf(address owner) external override view returns (uint256) {
return accountTokens[owner];
}
function balanceOfUnderlying(address owner) external override returns (uint) {
Exp memory exchangeRate = Exp({mantissa : exchangeRateCurrent()});
(MathError mErr, uint balance) = mulScalarTruncate(exchangeRate, accountTokens[owner]);
return balance;
}
/**
* @notice Get a snapshot of the account's balances, and the cached exchange rate
* @dev This is used by comptroller to more efficiently perform liquidity checks.
* @param account Address of the account to snapshot
* @return (possible error, token balance, borrow balance, exchange rate mantissa)
*/
function getAccountSnapshot(address account) external override view returns (uint, uint, uint, uint) {
uint pTokenBalance = accountTokens[account];
uint borrowBalance = borrowBalanceStoredInternal(account);
uint exchangeRateMantissa = exchangeRateStoredInternal();
return (0, pTokenBalance, borrowBalance, exchangeRateMantissa);
}
/**
* @dev Function to simply retrieve block number
* This exists mainly for inheriting test contracts to stub this result.
*/
function getBlockNumber() internal view returns (uint) {
return block.number;
}
/**
* @notice Returns the current per-block borrow interest rate for this cToken
* @return The borrow interest rate per block, scaled by 1e18
*/
function borrowRatePerBlock() external override view returns (uint) {
return interestRateModel.getBorrowRate(getCash(), totalBorrows, totalReserves);
}
/**
* @notice Returns the current per-block supply interest rate for this cToken
* @return The supply interest rate per block, scaled by 1e18
*/
function supplyRatePerBlock() external override view returns (uint) {
return interestRateModel.getSupplyRate(getCash(), totalBorrows, totalReserves, reserveFactorMantissa);
}
function totalBorrowsCurrent() external override nonReentrant returns (uint) {
accrueInterest();
return totalBorrows;
}
function borrowBalanceCurrent(address account) external override nonReentrant returns (uint) {
accrueInterest();
return borrowBalanceStored(account);
}
/**
* @notice Return the borrow balance of account based on stored data
* @param account The address whose balance should be calculated
* @return The calculated balance
*/
function borrowBalanceStored(address account) public override view returns (uint) {
return borrowBalanceStoredInternal(account);
}
function borrowInterestBalancePriorInternal(address account) internal view returns (uint) {
uint borrowBalance = borrowBalanceStoredInternal(account);
uint interestAmountPrior = borrowBalance.sub(accountBorrows[account].principal);
return interestAmountPrior;
}
/**
* @notice Return the borrow balance of account based on stored data
* @param account The address whose balance should be calculated
* If borrowBalance = 0 then borrowIndex is likely also 0
* Otherwise: recentBorrowBalance = borrower.borrowBalance * market.borrowIndex / borrower.borrowIndex
* @return (the calculated balance or 0 if error code is non-zero)
*/
function borrowBalanceStoredInternal(address account) internal view returns (uint) {
BorrowSnapshot storage borrowSnapshot = accountBorrows[account];
if (borrowSnapshot.principal == 0) {
return 0;
}
uint principalTimesIndex = borrowSnapshot.principal.mul(borrowIndex);
uint result = principalTimesIndex.div(borrowSnapshot.interestIndex);
return result;
}
function exchangeRateCurrent() public override nonReentrant returns (uint) {
accrueInterest();
return exchangeRateStored();
}
/**
* @notice Calculates the exchange rate from the underlying to the PToken
* @dev This function does not accrue interest before calculating the exchange rate
* @return Calculated exchange rate scaled by 1e18
*/
function exchangeRateStored() public override view returns (uint) {
return exchangeRateStoredInternal();
}
/**
* @notice Calculates the exchange rate from the underlying to the CToken
* If there are no tokens minted: exchangeRate = initialExchangeRate
* Otherwise: exchangeRate = (totalCash + totalBorrows - totalReserves) / totalSupply
* @dev This function does not accrue interest before calculating the exchange rate
* @return (calculated exchange rate scaled by 1e18)
*/
function exchangeRateStoredInternal() internal view returns (uint) {
uint _totalSupply = totalSupply;
if (_totalSupply == 0) {
return initialExchangeRateMantissa;
} else {
uint totalCash = getCash();
uint cashPlusBorrowsMinusReserves = totalCash.add(totalBorrows).sub(totalReserves);
(MathError mathErr, Exp memory exchangeRate) = getExp(cashPlusBorrowsMinusReserves, _totalSupply);
require(mathErr == MathError.NO_ERROR, "exchangeRateStoredInternal failed");
return exchangeRate.mantissa;
}
}
/**
* @notice Get cash balance of this cToken in the underlying asset
* @return The quantity of underlying asset owned by this contract
*/
function getCash() public override view returns (uint) {
return IEIP20(underlying).balanceOf(address(this));
}
/**
* @notice Applies accrued interest to total borrows and reserves
* @dev This calculates interest accrued from the last checkpointed block
* up to the current block and writes new checkpoint to storage.
*/
function accrueInterest() public override returns (uint) {
uint currentBlockNumber = getBlockNumber();
uint accrualBlockNumberPrior = accrualBlockNumber;
if (accrualBlockNumberPrior == currentBlockNumber) {
return uint(Error.NO_ERROR);
}
uint cashPrior = getCash();
uint borrowsPrior = totalBorrows;
uint reservesPrior = totalReserves;
uint borrowIndexPrior = borrowIndex;
uint borrowRateMantissa = interestRateModel.getBorrowRate(cashPrior, borrowsPrior, reservesPrior);
require(borrowRateMantissa <= borrowRateMaxMantissa, "borrow rate is absurdly high");
uint blockDelta = currentBlockNumber.sub(accrualBlockNumberPrior);
MathError mathErr;
Exp memory simpleInterestFactor;
uint interestAccumulated;
uint totalBorrowsNew;
uint totalReservesNew;
uint borrowIndexNew;
(mathErr, simpleInterestFactor) = mulScalar(Exp({mantissa : borrowRateMantissa}), blockDelta);
if (mathErr != MathError.NO_ERROR) {
return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_SIMPLE_INTEREST_FACTOR_CALCULATION_FAILED, uint(mathErr));
}
(mathErr, interestAccumulated) = mulScalarTruncate(simpleInterestFactor, borrowsPrior);
if (mathErr != MathError.NO_ERROR) {
return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_ACCUMULATED_INTEREST_CALCULATION_FAILED, uint(mathErr));
}
totalBorrowsNew = interestAccumulated.add(borrowsPrior);
(mathErr, totalReservesNew) = mulScalarTruncateAddUInt(Exp({mantissa : reserveFactorMantissa}), interestAccumulated, reservesPrior);
if (mathErr != MathError.NO_ERROR) {
return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_NEW_TOTAL_RESERVES_CALCULATION_FAILED, uint(mathErr));
}
(mathErr, borrowIndexNew) = mulScalarTruncateAddUInt(simpleInterestFactor, borrowIndexPrior, borrowIndexPrior);
if (mathErr != MathError.NO_ERROR) {
return failOpaque(Error.MATH_ERROR, FailureInfo.ACCRUE_INTEREST_NEW_BORROW_INDEX_CALCULATION_FAILED, uint(mathErr));
}
accrualBlockNumber = currentBlockNumber;
borrowIndex = borrowIndexNew;
totalBorrows = totalBorrowsNew;
totalReserves = totalReservesNew;
emit AccrueInterest(cashPrior, interestAccumulated, borrowIndexNew, totalBorrowsNew, totalReservesNew);
return uint(Error.NO_ERROR);
}
/**
* @notice Sender supplies assets into the market and receives cTokens in exchange
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param mintAmount The amount of the underlying asset to supply
* @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual mint amount.
*/
function mint(uint mintAmount) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.MINT_ACCRUE_INTEREST_FAILED);
}
return mintFresh(msg.sender, mintAmount);
}
struct MintLocalVars {
Error err;
MathError mathErr;
uint exchangeRateMantissa;
uint mintTokens;
uint totalSupplyNew;
uint accountTokensNew;
uint actualMintAmount;
}
/**
* @notice User supplies assets into the market and receives cTokens in exchange
* @dev Assumes interest has already been accrued up to the current block
* @param minter The address of the account which is supplying the assets
* @param mintAmount The amount of the underlying asset to supply
* @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual mint amount.
*/
function mintFresh(address minter, uint mintAmount) internal returns (uint) {
uint allowed = comptroller.mintAllowed(address(this), minter, mintAmount);
if (allowed != 0) {
return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.MINT_COMPTROLLER_REJECTION, allowed);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.MINT_FRESHNESS_CHECK);
}
MintLocalVars memory vars;
vars.exchangeRateMantissa = exchangeRateStoredInternal();
vars.actualMintAmount = doTransferIn(minter, mintAmount);
(vars.mathErr, vars.mintTokens) = divScalarByExpTruncate(vars.actualMintAmount, Exp({mantissa : vars.exchangeRateMantissa}));
require(vars.mathErr == MathError.NO_ERROR, "MINT_EXCHANGE_CALCULATION_FAILED");
vars.totalSupplyNew = totalSupply.add(vars.mintTokens);
vars.accountTokensNew = accountTokens[minter].add(vars.mintTokens);
totalSupply = vars.totalSupplyNew;
accountTokens[minter] = vars.accountTokensNew;
emit Mint(minter, vars.actualMintAmount, vars.mintTokens, vars.totalSupplyNew, vars.accountTokensNew);
emit Transfer(address(this), minter, vars.mintTokens);
return 0;
}
/**
* @notice Sender redeems cTokens in exchange for the underlying asset
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param redeemTokens The number of cTokens to redeem into underlying
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeem(uint redeemTokens) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.REDEEM_ACCRUE_INTEREST_FAILED);
}
return redeemFresh(msg.sender, redeemTokens, 0);
}
/**
* @notice Sender redeems cTokens in exchange for a specified amount of underlying asset
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param redeemAmount The amount of underlying to receive from redeeming cTokens
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeemUnderlying(uint redeemAmount) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.REDEEM_ACCRUE_INTEREST_FAILED);
}
return redeemFresh(msg.sender, 0, redeemAmount);
}
struct RedeemLocalVars {
Error err;
MathError mathErr;
uint exchangeRateMantissa;
uint redeemTokens;
uint redeemAmount;
uint totalSupplyNew;
uint accountTokensNew;
}
/**
* @notice User redeems cTokens in exchange for the underlying asset
* @dev Assumes interest has already been accrued up to the current block
* @param redeemer The address of the account which is redeeming the tokens
* @param redeemTokensIn The number of cTokens to redeem into underlying (only one of redeemTokensIn or redeemAmountIn may be non-zero)
* @param redeemAmountIn The number of underlying tokens to receive from redeeming cTokens (only one of redeemTokensIn or redeemAmountIn may be non-zero)
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeemFresh(address payable redeemer, uint redeemTokensIn, uint redeemAmountIn) internal returns (uint) {
RedeemLocalVars memory vars;
vars.exchangeRateMantissa = exchangeRateStoredInternal();
if (redeemTokensIn > 0) {
vars.redeemTokens = redeemTokensIn;
(vars.mathErr, vars.redeemAmount) = mulScalarTruncate(Exp({mantissa : vars.exchangeRateMantissa}), redeemTokensIn);
if (vars.mathErr != MathError.NO_ERROR) {
return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_EXCHANGE_TOKENS_CALCULATION_FAILED, uint(vars.mathErr));
}
} else {
(vars.mathErr, vars.redeemTokens) = divScalarByExpTruncate(redeemAmountIn, Exp({mantissa : vars.exchangeRateMantissa}));
if (vars.mathErr != MathError.NO_ERROR) {
return failOpaque(Error.MATH_ERROR, FailureInfo.REDEEM_EXCHANGE_AMOUNT_CALCULATION_FAILED, uint(vars.mathErr));
}
vars.redeemAmount = redeemAmountIn;
}
uint allowed = comptroller.redeemAllowed(address(this), redeemer, vars.redeemTokens);
if (allowed != 0) {
return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.REDEEM_COMPTROLLER_REJECTION, allowed);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.REDEEM_FRESHNESS_CHECK);
}
vars.totalSupplyNew = totalSupply.sub(vars.redeemTokens);
vars.accountTokensNew = accountTokens[redeemer].sub(vars.redeemTokens);
if (getCash() < vars.redeemAmount) {
return fail(Error.TOKEN_INSUFFICIENT_CASH, FailureInfo.REDEEM_TRANSFER_OUT_NOT_POSSIBLE);
}
doTransferOut(redeemer, vars.redeemAmount);
totalSupply = vars.totalSupplyNew;
accountTokens[redeemer] = vars.accountTokensNew;
emit Transfer(redeemer, address(this), vars.redeemTokens);
emit Redeem(redeemer, vars.redeemAmount, vars.redeemTokens, vars.totalSupplyNew, vars.accountTokensNew);
return 0;
}
/**
* @notice Sender borrows assets from the protocol to their own address
* @param borrowAmount The amount of the underlying asset to borrow
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function borrow(uint borrowAmount) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.BORROW_ACCRUE_INTEREST_FAILED);
}
return borrowFresh(msg.sender, borrowAmount);
}
struct BorrowLocalVars {
MathError mathErr;
uint accountBorrows;
uint accountBorrowsNew;
uint totalBorrowsNew;
uint interestBalancePrior; //interest balance before now.
}
/**
* @notice Users borrow assets from the protocol to their own address
* @param borrowAmount The amount of the underlying asset to borrow
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function borrowFresh(address payable borrower, uint borrowAmount) internal returns (uint) {
uint allowed = comptroller.borrowAllowed(address(this), borrower, borrowAmount);
if (allowed != 0) {
return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.BORROW_COMPTROLLER_REJECTION, allowed);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.BORROW_FRESHNESS_CHECK);
}
if (getCash() < borrowAmount) {
return fail(Error.TOKEN_INSUFFICIENT_CASH, FailureInfo.BORROW_CASH_NOT_AVAILABLE);
}
BorrowLocalVars memory vars;
vars.interestBalancePrior = borrowInterestBalancePriorInternal(borrower);
vars.accountBorrows = borrowBalanceStoredInternal(borrower);
vars.accountBorrowsNew = vars.accountBorrows.add(borrowAmount);
vars.totalBorrowsNew = totalBorrows.add(borrowAmount);
doTransferOut(borrower, borrowAmount);
accountBorrows[borrower].principal = vars.accountBorrowsNew;
accountBorrows[borrower].interestIndex = borrowIndex;
totalBorrows = vars.totalBorrowsNew;
emit Borrow(borrower, borrowAmount, vars.accountBorrowsNew, vars.totalBorrowsNew, vars.interestBalancePrior);
return 0;
}
/**
* @notice Sender repays their own borrow
* @param repayAmount The amount to repay
* @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
*/
function repayBorrow(uint repayAmount) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.REPAY_BORROW_ACCRUE_INTEREST_FAILED);
}
(err,) = repayBorrowFresh(msg.sender, msg.sender, repayAmount);
return err;
}
/**
* @notice Sender repays a borrow belonging to borrower
* @param borrower the account with the debt being payed off
* @param repayAmount The amount to repay
* @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
*/
function repayBorrowBehalf(address borrower, uint repayAmount) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.REPAY_BEHALF_ACCRUE_INTEREST_FAILED);
}
(err,) = repayBorrowFresh(msg.sender, borrower, repayAmount);
return err;
}
struct RepayBorrowLocalVars {
Error err;
MathError mathErr;
uint repayAmount;
uint borrowerIndex;
uint accountBorrows;
uint accountBorrowsNew;
uint totalBorrowsNew;
uint actualRepayAmount;
uint interestBalancePrior;
}
/**
* @notice Borrows are repaid by another user (possibly the borrower).
* @param payer the account paying off the borrow
* @param borrower the account with the debt being payed off
* @param repayAmount the amount of undelrying tokens being returned
* @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
*/
function repayBorrowFresh(address payer, address borrower, uint repayAmount) internal returns (uint, uint) {
uint allowed = comptroller.repayBorrowAllowed(address(this), payer, borrower, repayAmount);
if (allowed != 0) {
return (failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.REPAY_BORROW_COMPTROLLER_REJECTION, allowed), 0);
}
if (accrualBlockNumber != getBlockNumber()) {
return (fail(Error.MARKET_NOT_FRESH, FailureInfo.REPAY_BORROW_FRESHNESS_CHECK), 0);
}
RepayBorrowLocalVars memory vars;
vars.borrowerIndex = accountBorrows[borrower].interestIndex;
vars.interestBalancePrior = borrowInterestBalancePriorInternal(borrower);
vars.accountBorrows = borrowBalanceStoredInternal(borrower);
if (repayAmount == uint(- 1)) {
vars.repayAmount = vars.accountBorrows;
} else {
vars.repayAmount = repayAmount;
}
vars.actualRepayAmount = doTransferIn(payer, vars.repayAmount);
vars.accountBorrowsNew = vars.accountBorrows.sub(vars.actualRepayAmount);
vars.totalBorrowsNew = totalBorrows.sub(vars.actualRepayAmount);
accountBorrows[borrower].principal = vars.accountBorrowsNew;
accountBorrows[borrower].interestIndex = borrowIndex;
totalBorrows = vars.totalBorrowsNew;
emit RepayBorrow(payer, borrower, vars.actualRepayAmount, vars.accountBorrowsNew, vars.totalBorrowsNew, vars.interestBalancePrior);
return (0, vars.actualRepayAmount);
}
/**
* @notice The sender liquidates the borrowers collateral.
* The collateral seized is transferred to the liquidator.
* @param borrower The borrower of this cToken to be liquidated
* @param pTokenCollateral The market in which to seize collateral from the borrower
* @param repayAmount The amount of the underlying borrowed asset to repay
* @return (uint, uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol), and the actual repayment amount.
*/
function liquidateBorrow(address borrower, uint repayAmount, IPToken pTokenCollateral) external nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.LIQUIDATE_ACCRUE_BORROW_INTEREST_FAILED);
}
err = pTokenCollateral.accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.LIQUIDATE_ACCRUE_COLLATERAL_INTEREST_FAILED);
}
return liquidateBorrowFresh(msg.sender, borrower, repayAmount, pTokenCollateral);
}
/**
* @notice The liquidator liquidates the borrowers collateral.
* The collateral seized is transferred to the liquidator.
* @param borrower The borrower of this cToken to be liquidated
* @param liquidator The address repaying the borrow and seizing collateral
* @param pTokenCollateral The market in which to seize collateral from the borrower
* @param repayAmount The amount of the underlying borrowed asset to repay
* @return (uint) An error code (0=success, otherwise a failure, see ErrorReporter.sol)
*/
function liquidateBorrowFresh(address liquidator, address borrower, uint repayAmount, IPToken pTokenCollateral) internal returns (uint) {
uint allowed = comptroller.liquidateBorrowAllowed(address(this), address(pTokenCollateral), liquidator, borrower, repayAmount);
if (allowed != 0) {
return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.LIQUIDATE_COMPTROLLER_REJECTION, allowed);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.LIQUIDATE_FRESHNESS_CHECK);
}
if (pTokenCollateral.accrualBlockNumber() != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.LIQUIDATE_COLLATERAL_FRESHNESS_CHECK);
}
if (borrower == liquidator) {
return fail(Error.INVALID_ACCOUNT_PAIR, FailureInfo.LIQUIDATE_LIQUIDATOR_IS_BORROWER);
}
if (repayAmount == 0) {
return fail(Error.INVALID_CLOSE_AMOUNT_REQUESTED, FailureInfo.LIQUIDATE_CLOSE_AMOUNT_IS_ZERO);
}
if (repayAmount == uint(- 1)) {
return fail(Error.INVALID_CLOSE_AMOUNT_REQUESTED, FailureInfo.LIQUIDATE_CLOSE_AMOUNT_IS_UINT_MAX);
}
(uint repayBorrowError, uint actualRepayAmount) = repayBorrowFresh(liquidator, borrower, repayAmount);
if (repayBorrowError != uint(Error.NO_ERROR)) {
return fail(Error(repayBorrowError), FailureInfo.LIQUIDATE_REPAY_BORROW_FRESH_FAILED);
}
(uint amountSeizeError, uint seizeTokens) = comptroller.liquidateCalculateSeizeTokens(address(this), address(pTokenCollateral), actualRepayAmount);
require(amountSeizeError == uint(Error.NO_ERROR), "LIQUIDATE_COMPTROLLER_CALCULATE_AMOUNT_SEIZE_FAILED");
require(pTokenCollateral.balanceOf(borrower) >= seizeTokens, "LIQUIDATE_SEIZE_TOO_MUCH");
uint seizeError;
if (address(pTokenCollateral) == address(this)) {
seizeError = seizeInternal(address(this), liquidator, borrower, seizeTokens);
} else {
seizeError = pTokenCollateral.seize(liquidator, borrower, seizeTokens);
}
require(seizeError == uint(Error.NO_ERROR), "token seizure failed");
emit LiquidateBorrow(liquidator, borrower, actualRepayAmount, address(pTokenCollateral), seizeTokens);
return 0;
}
/**
* @notice Transfers collateral tokens (this market) to the liquidator.
* @dev Will fail unless called by another cToken during the process of liquidation.
* Its absolutely critical to use msg.sender as the borrowed cToken and not a parameter.
* @param liquidator The account receiving seized collateral
* @param borrower The account having collateral seized
* @param seizeTokens The number of cTokens to seize
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function seize(address liquidator, address borrower, uint seizeTokens) external override nonReentrant returns (uint) {
return seizeInternal(msg.sender, liquidator, borrower, seizeTokens);
}
/**
* @notice Transfers collateral tokens (this market) to the liquidator.
* @dev Called only during an in-kind liquidation, or by liquidateBorrow during the liquidation of another PToken.
* Its absolutely critical to use msg.sender as the seizer cToken and not a parameter.
* @param seizerToken The contract seizing the collateral (i.e. borrowed cToken)
* @param liquidator The account receiving seized collateral
* @param borrower The account having collateral seized
* @param seizeTokens The number of cTokens to seize
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function seizeInternal(address seizerToken, address liquidator, address borrower, uint seizeTokens) internal returns (uint) {
uint allowed = comptroller.seizeAllowed(address(this), seizerToken, liquidator, borrower, seizeTokens);
if (allowed != 0) {
return failOpaque(Error.COMPTROLLER_REJECTION, FailureInfo.LIQUIDATE_SEIZE_COMPTROLLER_REJECTION, allowed);
}
if (borrower == liquidator) {
return fail(Error.INVALID_ACCOUNT_PAIR, FailureInfo.LIQUIDATE_SEIZE_LIQUIDATOR_IS_BORROWER);
}
MathError mathErr;
uint borrowerTokensNew = accountTokens[borrower].sub(seizeTokens);
uint liquidatorTokensNew = accountTokens[liquidator].add(seizeTokens);
accountTokens[borrower] = borrowerTokensNew;
accountTokens[liquidator] = liquidatorTokensNew;
emit Transfer(borrower, liquidator, seizeTokens);
return 0;
}
/*** Admin Functions ***/
/**
* @notice accrues interest and sets a new reserve factor for the protocol using _setReserveFactorFresh
* @dev Admin function to accrue interest and set a new reserve factor
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setReserveFactor(uint newReserveFactorMantissa) external onlyOwner override nonReentrant returns (uint) {
uint err = accrueInterest();
if (err != 0) {
return fail(Error(err), FailureInfo.SET_RESERVE_FACTOR_ACCRUE_INTEREST_FAILED);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.SET_RESERVE_FACTOR_FRESH_CHECK);
}
if (newReserveFactorMantissa > reserveFactorMaxMantissa) {
return fail(Error.BAD_INPUT, FailureInfo.SET_RESERVE_FACTOR_BOUNDS_CHECK);
}
reserveFactorMantissa = newReserveFactorMantissa;
return 0;
}
/**
* @notice Accrues interest and reduces reserves by transferring from msg.sender
* @param addAmount Amount of addition to reserves
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _addReserves(uint addAmount) external nonReentrant returns (uint) {
uint error = accrueInterest();
if (error != 0) {
return fail(Error(error), FailureInfo.ADD_RESERVES_ACCRUE_INTEREST_FAILED);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.ADD_RESERVES_FRESH_CHECK);
}
uint actualAddAmount = doTransferIn(msg.sender, addAmount);
uint totalReservesNew = totalReserves + actualAddAmount;
require(totalReservesNew >= totalReserves, "addAmount error");
totalReserves = totalReservesNew;
emit ReservesAdded(msg.sender, actualAddAmount, totalReservesNew);
return 0;
}
/**
* @notice Accrues interest and reduces reserves by transferring to admin
* @param reduceAmount Amount of reduction to reserves
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _reduceReserves(uint reduceAmount) external override nonReentrant returns (uint) {
uint error = accrueInterest();
if (error != 0) {
return fail(Error(error), FailureInfo.REDUCE_RESERVES_ACCRUE_INTEREST_FAILED);
}
if (accrualBlockNumber != getBlockNumber()) {
return fail(Error.MARKET_NOT_FRESH, FailureInfo.REDUCE_RESERVES_FRESH_CHECK);
}
if (getCash() < reduceAmount) {
return fail(Error.TOKEN_INSUFFICIENT_CASH, FailureInfo.REDUCE_RESERVES_CASH_NOT_AVAILABLE);
}
if (reduceAmount > totalReserves) {
return fail(Error.BAD_INPUT, FailureInfo.REDUCE_RESERVES_VALIDATION);
}
uint totalReservesNew = totalReserves - reduceAmount;
require(totalReservesNew <= totalReserves, "reduceAmount error");
totalReserves = totalReservesNew;
doTransferOut(payable(owner()), reduceAmount);
emit ReservesReduced(owner(), reduceAmount, totalReservesNew);
return 0;
}
/**
* @notice accrues interest and updates the interest rate model using _setInterestRateModelFresh
* @dev Admin function to accrue interest and update the interest rate model
* @param _interestRateModel the new interest rate model to use
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setInterestRateModel(IInterestRateModel _interestRateModel) public onlyOwner override returns (uint) {
if (interestRateModel != IInterestRateModel(0)) {
accrueInterest();
}
interestRateModel = _interestRateModel;
return 0;
}
/**
* @notice Sets a new comptroller for the market
* @dev Admin function to set a new comptroller
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setComptroller(IComptroller _comptroller) public onlyOwner override returns (uint) {
comptroller = _comptroller;
return 0;
}
/*** Safe Token ***/
/**
* @dev Similar to EIP20 transfer, except it handles a False result from `transferFrom` and reverts in that case.
* This will revert due to insufficient balance or insufficient allowance.
* This function returns the actual amount received,
* which may be less than `amount` if there is a fee attached to the transfer.
*
* Note: This wrapper safely handles non-standard ERC-20 tokens that do not return a value.
* See here: https://medium.com/coinmonks/missing-return-value-bug-at-least-130-tokens-affected-d67bf08521ca
*/
function doTransferIn(address from, uint amount) internal returns (uint) {
IEIP20 token = IEIP20(underlying);
uint balanceBefore = token.balanceOf(address(this));
token.transferFrom(from, address(this), amount);
bool success;
assembly {
switch returndatasize()
case 0 {
success := not(0)
}
case 32 {
returndatacopy(0, 0, 32)
success := mload(0)
}
default {
revert(0, 0)
}
}
require(success, "TOKEN_TRANSFER_IN_FAILED");
uint balanceAfter = token.balanceOf(address(this));
require(balanceAfter >= balanceBefore, "TOKEN_TRANSFER_IN_OVERFLOW");
return balanceAfter - balanceBefore;
}
/**
* @dev Similar to EIP20 transfer, except it handles a False success from `transfer` and returns an explanatory
* error code rather than reverting. If caller has not called checked protocol's balance, this may revert due to
* insufficient cash held in this contract. If caller has checked protocol's balance prior to this call, and verified
* it is >= amount, this should not revert in normal conditions.
*
* Note: This wrapper safely handles non-standard ERC-20 tokens that do not return a value.
* See here: https://medium.com/coinmonks/missing-return-value-bug-at-least-130-tokens-affected-d67bf08521ca
*/
function doTransferOut(address payable to, uint amount) internal {
IEIP20 token = IEIP20(underlying);
token.transfer(to, amount);
bool success;
assembly {
switch returndatasize()
case 0 {
success := not(0)
}
case 32 {
returndatacopy(0, 0, 32)
success := mload(0)
}
default {
revert(0, 0)
}
}
require(success, "TOKEN_TRANSFER_OUT_FAILED");
}
/*** Reentrancy Guard ***/
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
*/
modifier nonReentrant() {
require(_notEntered, "re-entered");
_notEntered = false;
_;
_notEntered = true;
}
}
|
* @notice Returns the current per-block borrow interest rate for this cToken @return The borrow interest rate per block, scaled by 1e18/
|
function borrowRatePerBlock() external override view returns (uint) {
return interestRateModel.getBorrowRate(getCash(), totalBorrows, totalReserves);
}
| 908,530 |
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/**
*Submitted for verification at Etherscan.io on 2021-07-07
*/
// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity 0.7.5;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
// function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
// require(address(this).balance >= value, "Address: insufficient balance for call");
// return _functionCallWithValue(target, data, value, errorMessage);
// }
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
function addressToString(address _address) internal pure returns(string memory) {
bytes32 _bytes = bytes32(uint256(_address));
bytes memory HEX = "0123456789abcdef";
bytes memory _addr = new bytes(42);
_addr[0] = '0';
_addr[1] = 'x';
for(uint256 i = 0; i < 20; i++) {
_addr[2+i*2] = HEX[uint8(_bytes[i + 12] >> 4)];
_addr[3+i*2] = HEX[uint8(_bytes[i + 12] & 0x0f)];
}
return string(_addr);
}
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IOwnable {
function policy() external view returns (address);
function renounceManagement() external;
function pushManagement( address newOwner_ ) external;
function pullManagement() external;
}
contract Ownable is IOwnable {
address internal _owner;
address internal _newOwner;
event OwnershipPushed(address indexed previousOwner, address indexed newOwner);
event OwnershipPulled(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipPushed( address(0), _owner );
}
function policy() public view override returns (address) {
return _owner;
}
modifier onlyPolicy() {
require( _owner == msg.sender, "Ownable: caller is not the owner" );
_;
}
function renounceManagement() public virtual override onlyPolicy() {
emit OwnershipPushed( _owner, address(0) );
_owner = address(0);
}
function pushManagement( address newOwner_ ) public virtual override onlyPolicy() {
require( newOwner_ != address(0), "Ownable: new owner is the zero address");
emit OwnershipPushed( _owner, newOwner_ );
_newOwner = newOwner_;
}
function pullManagement() public virtual override {
require( msg.sender == _newOwner, "Ownable: must be new owner to pull");
emit OwnershipPulled( _owner, _newOwner );
_owner = _newOwner;
}
}
interface ILendingPool {
function deposit( address asset, uint256 amount, address onBehalfOf, uint16 referralCode ) external;
function withdraw( address asset, uint256 amount, address to ) external;
}
interface IStakedAave {
function claimRewards(address to, uint256 amount) external;
function getTotalRewardsBalance(address staker) external view returns (uint256);
}
interface ITreasury {
function deposit( uint _amount, address _token, uint _profit ) external returns ( uint send_ );
function manage( address _token, uint _amount ) external;
function valueOf( address _token, uint _amount ) external view returns ( uint value_ );
}
/**
* Contract deploys reserves from treasury into the Aave lending pool,
* earning interest and $stkAAVE for the treasury.
*/
contract AaveAllocator is Ownable {
/* ======== DEPENDENCIES ======== */
using SafeERC20 for IERC20;
using SafeMath for uint;
/* ======== STATE VARIABLES ======== */
address immutable lendingPool; // Aave Lending Pool
address immutable stkAave; // staked Aave ( rewards token )
address treasury; // Olympus Treasury
mapping( address => address ) public aTokens; // Corresponding aTokens for tokens
uint public totalValueAllocated;
mapping( address => uint ) public deployed; // amount allocated into pool for token
mapping( address => uint ) public maxAllocation; // max allocated into pool for token
uint public changeMaxAllocationTimelock; // timelock in blocks to change max allocation
mapping( address => uint ) public changeMaxAllocationBlock; // block when new max can be set
mapping( address => uint ) public newMaxAllocation; // pending new max allocations for tokens
uint16 public referralCode; // Rebates portion of lending pool fees
/* ======== CONSTRUCTOR ======== */
constructor (
address _treasury,
address _lendingPool,
address _stkAave,
uint _changeMaxAllocationTimelock
) {
require( _treasury != address(0) );
treasury = _treasury;
require( _lendingPool != address(0) );
lendingPool = _lendingPool;
require( _stkAave != address(0) );
stkAave = _stkAave;
changeMaxAllocationTimelock = _changeMaxAllocationTimelock;
referralCode = 0;
}
/* ======== OPEN FUNCTIONS ======== */
/**
* @notice claims accrued stkAave rewards
*/
function harvest() external {
IStakedAave( stkAave ).claimRewards( treasury, rewardsPending() );
}
/* ======== POLICY FUNCTIONS ======== */
/**
* @notice deposits asset from treasury into lending pool and returns aToken
* @param asset address
* @param amount uint
*/
function deposit( address asset, uint amount ) external onlyPolicy() {
require( !exceedsMaxAllocation( asset, amount ) ); // ensure deposit is within bounds
ITreasury( treasury ).manage( asset, amount ); // retrieve amount of asset from treasury
IERC20( asset ).approve( lendingPool, amount ); // deposit into lending pool
ILendingPool( lendingPool ).deposit( asset, amount, address(this), referralCode ); // returns aToken
uint value = ITreasury( treasury ).valueOf( asset, amount );
trackAllocations( asset, amount, value, true );
address aToken = aTokens[ asset ];
uint aBalance = IERC20( aToken ).balanceOf( address(this) );
// approve and deposit asset into treasury
IERC20( aToken ).approve( treasury, aBalance );
// use value as profit so no new OHM is minted
ITreasury( treasury ).deposit( aBalance, aToken, value );
}
/**
* @notice withdraws aToken from lending pool and asset to treasury
* @param asset address
* @param amount uint
*/
function withdraw( address asset, uint amount ) external onlyPolicy() {
address aToken = aTokens[ asset ];
ITreasury( treasury ).manage( aToken, amount ); // retrieve amount of aToken from treasury
IERC20( aToken ).approve( lendingPool, amount ); // withdraw from lending pool
ILendingPool( lendingPool ).withdraw( aToken, amount, address(this) ); // returns asset
uint balance = IERC20( asset ).balanceOf( address(this) );
uint value = ITreasury( treasury ).valueOf( asset, balance );
trackAllocations( asset, balance, value, false );
// approve and deposit asset into treasury
IERC20( asset ).approve( treasury, balance );
// use value as profit so no new OHM is minted
ITreasury( treasury ).deposit( balance, asset, value );
}
/**
* @notice adds asset and corresponding aToken to mapping
* @param token address
* @param aToken address
*/
function addToken( address token, address aToken, uint max ) external onlyPolicy() {
require( token != address(0) );
require( aToken != address(0) );
require( maxAllocation[ token ] == 0 || max <= maxAllocation[ token ] );
aTokens[ token ] = aToken;
maxAllocation[ token ] = max;
}
/**
* @notice starts timelock to change max allocation for asset
* @param asset address
* @param newMax uint
*/
function queueNewMaxAllocation( address asset, uint newMax ) external onlyPolicy() {
changeMaxAllocationBlock[ asset ] = block.number.add( changeMaxAllocationTimelock );
newMaxAllocation[ asset ] = newMax;
}
/**
* @notice changes max allocation for asset when timelock elapsed
* @param asset address
*/
function setNewMaxAllocation( address asset ) external onlyPolicy() {
require( block.number >= changeMaxAllocationBlock[ asset ], "Timelock not expired" );
maxAllocation[ asset ] = newMaxAllocation[ asset ];
newMaxAllocation[ asset ] = 0;
}
/**
* @notice initialize for production
* @param _treasury address
* @param _timelock uint
*/
function setForProduction( address _treasury, uint _timelock, uint16 _ref ) external onlyPolicy() {
require( changeMaxAllocationTimelock == 1 );
require( _timelock != 1, "Function only callable once" );
treasury = _treasury;
changeMaxAllocationTimelock = _timelock;
referralCode = _ref;
}
/**
* @notice set referral code to earn rebate on fees
* @param _ref uint16
*/
function setReferralCode( uint16 _ref ) external onlyPolicy() {
referralCode = _ref;
}
/* ======== INTERNAL FUNCTIONS ======== */
/**
* @notice accounting of deposits/withdrawals of assets and in total
* @param asset address
* @param amount uint
* @param value uint
* @param add bool
*/
function trackAllocations( address asset, uint amount, uint value, bool add ) internal {
if( add ) {
// track amount allocated into pool
deployed[ asset ] = deployed[ asset ].add( amount );
// track total value allocated into pools
totalValueAllocated = totalValueAllocated.add( value );
} else {
// track amount allocated into pool
if ( amount < deployed[ asset ] ) {
deployed[ asset ] = deployed[ asset ].sub( amount );
} else {
deployed[ asset ] = 0;
}
// track total value allocated into pools
if ( value < totalValueAllocated ) {
totalValueAllocated = totalValueAllocated.sub( value );
} else {
totalValueAllocated = 0;
}
}
}
/* ======== VIEW FUNCTIONS ======== */
function rewardsPending() public view returns ( uint ) {
return IStakedAave( stkAave ).getTotalRewardsBalance( address(this) );
}
/**
* @notice checks to ensure deposit does not exceed max allocation for asset
* @param asset address
* @param amount uint
*/
function exceedsMaxAllocation( address asset, uint amount ) public view returns ( bool ) {
uint alreadyDeployed = deployed[ asset ];
uint willBeDeployed = alreadyDeployed.add( amount );
return ( willBeDeployed > maxAllocation[ asset ] );
}
}
|
* @notice set referral code to earn rebate on fees @param _ref uint16/
|
function setReferralCode( uint16 _ref ) external onlyPolicy() {
referralCode = _ref;
}
| 15,456,721 |
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/**
*Submitted for verification at Etherscan.io on 2021-05-27
*/
/**
*Submitted for verification at Etherscan.io on 2020-09-01
*/
//SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity ^0.5.17;
interface IERC20 {
function totalSupply() external view returns (uint);
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
contract Context {
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping (address => uint) private _balances;
mapping (address => mapping (address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns (uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint addedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
require(_totalSupply <= 1e26, "_totalSupply exceed hard limit");
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint amount) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
}
library SafeMath {
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
library SafeERC20 {
using SafeMath for uint;
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint value) internal {
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract uCosmomasks is ERC20, ERC20Detailed {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint;
address public governance;
mapping (address => bool) public minters;
constructor () public ERC20Detailed("uCosmomask Fund", "uCMask", 18) {
governance = msg.sender;
addMinter(governance);
// underlying _mint function has hard limit
mint(governance, 1e26);
}
function mint(address account, uint amount) public {
require(minters[msg.sender], "!minter");
_mint(account, amount);
}
function setGovernance(address _governance) public {
require(msg.sender == governance, "!governance");
governance = _governance;
}
function addMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = true;
}
function removeMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = false;
}
function burn(uint256 amount) public {
_burn(msg.sender, amount);
}
}
|
underlying _mint function has hard limit
|
constructor () public ERC20Detailed("uCosmomask Fund", "uCMask", 18) {
governance = msg.sender;
addMinter(governance);
mint(governance, 1e26);
}
| 2,228,310 |
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/**
*Submitted for verification at Etherscan.io on 2021-12-06
*/
// hevm: flattened sources of src/DssSpell.sol
// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity =0.6.12 >=0.6.12 <0.7.0;
pragma experimental ABIEncoderV2;
////// lib/dss-exec-lib/src/CollateralOpts.sol
/* pragma solidity ^0.6.12; */
struct CollateralOpts {
bytes32 ilk;
address gem;
address join;
address clip;
address calc;
address pip;
bool isLiquidatable;
bool isOSM;
bool whitelistOSM;
uint256 ilkDebtCeiling;
uint256 minVaultAmount;
uint256 maxLiquidationAmount;
uint256 liquidationPenalty;
uint256 ilkStabilityFee;
uint256 startingPriceFactor;
uint256 breakerTolerance;
uint256 auctionDuration;
uint256 permittedDrop;
uint256 liquidationRatio;
uint256 kprFlatReward;
uint256 kprPctReward;
}
////// lib/dss-exec-lib/src/DssExecLib.sol
//
// DssExecLib.sol -- MakerDAO Executive Spellcrafting Library
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity ^0.6.12; */
/* pragma experimental ABIEncoderV2; */
/* import { CollateralOpts } from "./CollateralOpts.sol"; */
interface Initializable {
function init(bytes32) external;
}
interface Authorizable {
function rely(address) external;
function deny(address) external;
}
interface Fileable {
function file(bytes32, address) external;
function file(bytes32, uint256) external;
function file(bytes32, bytes32, uint256) external;
function file(bytes32, bytes32, address) external;
}
interface Drippable {
function drip() external returns (uint256);
function drip(bytes32) external returns (uint256);
}
interface Pricing {
function poke(bytes32) external;
}
interface ERC20 {
function decimals() external returns (uint8);
}
interface DssVat {
function hope(address) external;
function nope(address) external;
function ilks(bytes32) external returns (uint256 Art, uint256 rate, uint256 spot, uint256 line, uint256 dust);
function Line() external view returns (uint256);
function suck(address, address, uint) external;
}
interface ClipLike {
function vat() external returns (address);
function dog() external returns (address);
function spotter() external view returns (address);
function calc() external view returns (address);
function ilk() external returns (bytes32);
}
interface DogLike {
function ilks(bytes32) external returns (address clip, uint256 chop, uint256 hole, uint256 dirt);
}
interface JoinLike {
function vat() external returns (address);
function ilk() external returns (bytes32);
function gem() external returns (address);
function dec() external returns (uint256);
function join(address, uint) external;
function exit(address, uint) external;
}
// Includes Median and OSM functions
interface OracleLike_2 {
function src() external view returns (address);
function lift(address[] calldata) external;
function drop(address[] calldata) external;
function setBar(uint256) external;
function kiss(address) external;
function diss(address) external;
function kiss(address[] calldata) external;
function diss(address[] calldata) external;
function orb0() external view returns (address);
function orb1() external view returns (address);
}
interface MomLike {
function setOsm(bytes32, address) external;
function setPriceTolerance(address, uint256) external;
}
interface RegistryLike {
function add(address) external;
function xlip(bytes32) external view returns (address);
}
// https://github.com/makerdao/dss-chain-log
interface ChainlogLike {
function setVersion(string calldata) external;
function setIPFS(string calldata) external;
function setSha256sum(string calldata) external;
function getAddress(bytes32) external view returns (address);
function setAddress(bytes32, address) external;
function removeAddress(bytes32) external;
}
interface IAMLike {
function ilks(bytes32) external view returns (uint256,uint256,uint48,uint48,uint48);
function setIlk(bytes32,uint256,uint256,uint256) external;
function remIlk(bytes32) external;
function exec(bytes32) external returns (uint256);
}
interface LerpFactoryLike {
function newLerp(bytes32 name_, address target_, bytes32 what_, uint256 startTime_, uint256 start_, uint256 end_, uint256 duration_) external returns (address);
function newIlkLerp(bytes32 name_, address target_, bytes32 ilk_, bytes32 what_, uint256 startTime_, uint256 start_, uint256 end_, uint256 duration_) external returns (address);
}
interface LerpLike {
function tick() external returns (uint256);
}
library DssExecLib {
/* WARNING
The following library code acts as an interface to the actual DssExecLib
library, which can be found in its own deployed contract. Only trust the actual
library's implementation.
*/
address constant public LOG = 0xdA0Ab1e0017DEbCd72Be8599041a2aa3bA7e740F;
uint256 constant internal WAD = 10 ** 18;
uint256 constant internal RAY = 10 ** 27;
uint256 constant internal RAD = 10 ** 45;
uint256 constant internal THOUSAND = 10 ** 3;
uint256 constant internal MILLION = 10 ** 6;
uint256 constant internal BPS_ONE_PCT = 100;
uint256 constant internal BPS_ONE_HUNDRED_PCT = 100 * BPS_ONE_PCT;
uint256 constant internal RATES_ONE_HUNDRED_PCT = 1000000021979553151239153027;
function add(uint256 x, uint256 y) internal pure returns (uint256 z) {}
function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {}
function wdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {}
function rdiv(uint256 x, uint256 y) internal pure returns (uint256 z) {}
function dai() public view returns (address) { return getChangelogAddress("MCD_DAI"); }
function vat() public view returns (address) { return getChangelogAddress("MCD_VAT"); }
function cat() public view returns (address) { return getChangelogAddress("MCD_CAT"); }
function dog() public view returns (address) { return getChangelogAddress("MCD_DOG"); }
function jug() public view returns (address) { return getChangelogAddress("MCD_JUG"); }
function pot() public view returns (address) { return getChangelogAddress("MCD_POT"); }
function vow() public view returns (address) { return getChangelogAddress("MCD_VOW"); }
function end() public view returns (address) { return getChangelogAddress("MCD_END"); }
function esm() public view returns (address) { return getChangelogAddress("MCD_ESM"); }
function reg() public view returns (address) { return getChangelogAddress("ILK_REGISTRY"); }
function spotter() public view returns (address) { return getChangelogAddress("MCD_SPOT"); }
function osmMom() public view returns (address) { return getChangelogAddress("OSM_MOM"); }
function clipperMom() public view returns (address) { return getChangelogAddress("CLIPPER_MOM"); }
function autoLine() public view returns (address) { return getChangelogAddress("MCD_IAM_AUTO_LINE"); }
function daiJoin() public view returns (address) { return getChangelogAddress("MCD_JOIN_DAI"); }
function lerpFab() public view returns (address) { return getChangelogAddress("LERP_FAB"); }
function clip(bytes32 _ilk) public view returns (address _clip) {}
function flip(bytes32 _ilk) public view returns (address _flip) {}
function calc(bytes32 _ilk) public view returns (address _calc) {}
function getChangelogAddress(bytes32 _key) public view returns (address) {}
function setChangelogAddress(bytes32 _key, address _val) public {}
function setChangelogVersion(string memory _version) public {}
function authorize(address _base, address _ward) public {}
function canCast(uint40 _ts, bool _officeHours) public pure returns (bool) {}
function nextCastTime(uint40 _eta, uint40 _ts, bool _officeHours) public pure returns (uint256 castTime) {}
function updateCollateralPrice(bytes32 _ilk) public {}
function setContract(address _base, bytes32 _what, address _addr) public {}
function setContract(address _base, bytes32 _ilk, bytes32 _what, address _addr) public {}
function setValue(address _base, bytes32 _what, uint256 _amt) public {}
function setValue(address _base, bytes32 _ilk, bytes32 _what, uint256 _amt) public {}
function increaseGlobalDebtCeiling(uint256 _amount) public {}
function setIlkDebtCeiling(bytes32 _ilk, uint256 _amount) public {}
function setIlkAutoLineParameters(bytes32 _ilk, uint256 _amount, uint256 _gap, uint256 _ttl) public {}
function setIlkMinVaultAmount(bytes32 _ilk, uint256 _amount) public {}
function setIlkLiquidationPenalty(bytes32 _ilk, uint256 _pct_bps) public {}
function setIlkMaxLiquidationAmount(bytes32 _ilk, uint256 _amount) public {}
function setIlkLiquidationRatio(bytes32 _ilk, uint256 _pct_bps) public {}
function setStartingPriceMultiplicativeFactor(bytes32 _ilk, uint256 _pct_bps) public {}
function setAuctionTimeBeforeReset(bytes32 _ilk, uint256 _duration) public {}
function setAuctionPermittedDrop(bytes32 _ilk, uint256 _pct_bps) public {}
function setKeeperIncentivePercent(bytes32 _ilk, uint256 _pct_bps) public {}
function setKeeperIncentiveFlatRate(bytes32 _ilk, uint256 _amount) public {}
function setLiquidationBreakerPriceTolerance(address _clip, uint256 _pct_bps) public {}
function setIlkStabilityFee(bytes32 _ilk, uint256 _rate, bool _doDrip) public {}
function setStairstepExponentialDecrease(address _calc, uint256 _duration, uint256 _pct_bps) public {}
function whitelistOracleMedians(address _oracle) public {}
function addReaderToWhitelist(address _oracle, address _reader) public {}
function addReaderToWhitelistCall(address _oracle, address _reader) public {}
function allowOSMFreeze(address _osm, bytes32 _ilk) public {}
function addCollateralBase(
bytes32 _ilk,
address _gem,
address _join,
address _clip,
address _calc,
address _pip
) public {}
function addNewCollateral(CollateralOpts memory co) public {}
function sendPaymentFromSurplusBuffer(address _target, uint256 _amount) public {}
function linearInterpolation(bytes32 _name, address _target, bytes32 _ilk, bytes32 _what, uint256 _startTime, uint256 _start, uint256 _end, uint256 _duration) public returns (address) {}
}
////// lib/dss-exec-lib/src/DssAction.sol
//
// DssAction.sol -- DSS Executive Spell Actions
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity ^0.6.12; */
/* import { DssExecLib } from "./DssExecLib.sol"; */
/* import { CollateralOpts } from "./CollateralOpts.sol"; */
interface OracleLike_1 {
function src() external view returns (address);
}
abstract contract DssAction {
using DssExecLib for *;
// Modifier used to limit execution time when office hours is enabled
modifier limited {
require(DssExecLib.canCast(uint40(block.timestamp), officeHours()), "Outside office hours");
_;
}
// Office Hours defaults to true by default.
// To disable office hours, override this function and
// return false in the inherited action.
function officeHours() public virtual returns (bool) {
return true;
}
// DssExec calls execute. We limit this function subject to officeHours modifier.
function execute() external limited {
actions();
}
// DssAction developer must override `actions()` and place all actions to be called inside.
// The DssExec function will call this subject to the officeHours limiter
// By keeping this function public we allow simulations of `execute()` on the actions outside of the cast time.
function actions() public virtual;
// Provides a descriptive tag for bot consumption
// This should be modified weekly to provide a summary of the actions
// Hash: seth keccak -- "$(wget https://<executive-vote-canonical-post> -q -O - 2>/dev/null)"
function description() external virtual view returns (string memory);
// Returns the next available cast time
function nextCastTime(uint256 eta) external returns (uint256 castTime) {
require(eta <= uint40(-1));
castTime = DssExecLib.nextCastTime(uint40(eta), uint40(block.timestamp), officeHours());
}
}
////// lib/dss-exec-lib/src/DssExec.sol
//
// DssExec.sol -- MakerDAO Executive Spell Template
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity ^0.6.12; */
interface PauseAbstract {
function delay() external view returns (uint256);
function plot(address, bytes32, bytes calldata, uint256) external;
function exec(address, bytes32, bytes calldata, uint256) external returns (bytes memory);
}
interface Changelog {
function getAddress(bytes32) external view returns (address);
}
interface SpellAction {
function officeHours() external view returns (bool);
function description() external view returns (string memory);
function nextCastTime(uint256) external view returns (uint256);
}
contract DssExec {
Changelog constant public log = Changelog(0xdA0Ab1e0017DEbCd72Be8599041a2aa3bA7e740F);
uint256 public eta;
bytes public sig;
bool public done;
bytes32 immutable public tag;
address immutable public action;
uint256 immutable public expiration;
PauseAbstract immutable public pause;
// Provides a descriptive tag for bot consumption
// This should be modified weekly to provide a summary of the actions
// Hash: seth keccak -- "$(wget https://<executive-vote-canonical-post> -q -O - 2>/dev/null)"
function description() external view returns (string memory) {
return SpellAction(action).description();
}
function officeHours() external view returns (bool) {
return SpellAction(action).officeHours();
}
function nextCastTime() external view returns (uint256 castTime) {
return SpellAction(action).nextCastTime(eta);
}
// @param _description A string description of the spell
// @param _expiration The timestamp this spell will expire. (Ex. now + 30 days)
// @param _spellAction The address of the spell action
constructor(uint256 _expiration, address _spellAction) public {
pause = PauseAbstract(log.getAddress("MCD_PAUSE"));
expiration = _expiration;
action = _spellAction;
sig = abi.encodeWithSignature("execute()");
bytes32 _tag; // Required for assembly access
address _action = _spellAction; // Required for assembly access
assembly { _tag := extcodehash(_action) }
tag = _tag;
}
function schedule() public {
require(now <= expiration, "This contract has expired");
require(eta == 0, "This spell has already been scheduled");
eta = now + PauseAbstract(pause).delay();
pause.plot(action, tag, sig, eta);
}
function cast() public {
require(!done, "spell-already-cast");
done = true;
pause.exec(action, tag, sig, eta);
}
}
////// src/DssSpell.sol
//
// Copyright (C) 2021 Dai Foundation
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity 0.6.12; */
/* pragma experimental ABIEncoderV2; */
/* import "dss-exec-lib/DssExec.sol"; */
/* import "dss-exec-lib/DssAction.sol"; */
contract DssSpellAction is DssAction {
// Provides a descriptive tag for bot consumption
// This should be modified weekly to provide a summary of the actions
// Hash: seth keccak -- "$(wget https://raw.githubusercontent.com/makerdao/community/2dfe2a94162345e448c0353ec0e522038572366a/governance/votes/Executive%20vote%20-%20December%203%2C%202021.md -q -O - 2>/dev/null)"
string public constant override description =
"2021-12-03 MakerDAO Executive Spell | Hash: 0x9068bf87d0ec441f57ff92e2544a3df16d42a481b3e94ec2c37a443031833b84";
// Many of the settings that change weekly rely on the rate accumulator
// described at https://docs.makerdao.com/smart-contract-modules/rates-module
// To check this yourself, use the following rate calculation (example 8%):
//
// $ bc -l <<< 'scale=27; e( l(1.08)/(60 * 60 * 24 * 365) )'
//
// A table of rates can be found at
// https://ipfs.io/ipfs/QmefQMseb3AiTapiAKKexdKHig8wroKuZbmLtPLv4u2YwW
//
// --- Rates ---
uint256 constant ZERO_ONE_PCT_RATE = 1000000000031693947650284507;
uint256 constant ONE_PCT_RATE = 1000000000315522921573372069;
uint256 constant TWO_PCT_RATE = 1000000000627937192491029810;
uint256 constant TWO_FIVE_PCT_RATE = 1000000000782997609082909351;
uint256 constant TWO_SEVEN_FIVE_PCT_RATE = 1000000000860244400048238898;
uint256 constant THREE_PCT_RATE = 1000000000937303470807876289;
uint256 constant FOUR_PCT_RATE = 1000000001243680656318820312;
uint256 constant SIX_PCT_RATE = 1000000001847694957439350562;
uint256 constant SIX_FIVE_PCT_RATE = 1000000001996917783620820123;
// --- Math ---
uint256 constant MILLION = 10 ** 6;
uint256 constant BILLION = 10 ** 9;
// --- GUNIV3DAIUSDC2-A ---
address constant GUNIV3DAIUSDC2 = 0x50379f632ca68D36E50cfBC8F78fe16bd1499d1e;
address constant MCD_JOIN_GUNIV3DAIUSDC2_A = 0xA7e4dDde3cBcEf122851A7C8F7A55f23c0Daf335;
address constant MCD_CLIP_GUNIV3DAIUSDC2_A = 0xB55da3d3100C4eBF9De755b6DdC24BF209f6cc06;
address constant MCD_CLIP_CALC_GUNIV3DAIUSDC2_A = 0xef051Ca2A2d809ba47ee0FC8caaEd06E3D832225;
address constant PIP_GUNIV3DAIUSDC2 = 0xcCBa43231aC6eceBd1278B90c3a44711a00F4e93;
// --- Wallets ---
address constant COM_WALLET = 0x1eE3ECa7aEF17D1e74eD7C447CcBA61aC76aDbA9;
address constant FLIPFLOPFLAP_WALLET = 0x688d508f3a6B0a377e266405A1583B3316f9A2B3;
address constant FEEDBLACKLOOPS_WALLET = 0x80882f2A36d49fC46C3c654F7f9cB9a2Bf0423e1;
address constant ULTRASCHUPPI_WALLET = 0x89C5d54C979f682F40b73a9FC39F338C88B434c6;
address constant FIELDTECHNOLOGIES_WALLET = 0x0988E41C02915Fe1beFA78c556f946E5F20ffBD3;
function actions() public override {
// ----------------------------- Collateral onboarding -----------------------------
// Add GUNIV3DAIUSDC2-A as a new Vault Type
// https://vote.makerdao.com/polling/QmSkHE8T?network=mainnet#poll-detail
DssExecLib.addNewCollateral(
CollateralOpts({
ilk: "GUNIV3DAIUSDC2-A",
gem: GUNIV3DAIUSDC2,
join: MCD_JOIN_GUNIV3DAIUSDC2_A,
clip: MCD_CLIP_GUNIV3DAIUSDC2_A,
calc: MCD_CLIP_CALC_GUNIV3DAIUSDC2_A,
pip: PIP_GUNIV3DAIUSDC2,
isLiquidatable: false,
isOSM: true,
whitelistOSM: true,
ilkDebtCeiling: 10 * MILLION,
minVaultAmount: 15_000,
maxLiquidationAmount: 5 * MILLION,
liquidationPenalty: 1300,
ilkStabilityFee: ONE_PCT_RATE,
startingPriceFactor: 10500,
breakerTolerance: 9500,
auctionDuration: 220 minutes,
permittedDrop: 9000,
liquidationRatio: 10500,
kprFlatReward: 300,
kprPctReward: 10
})
);
DssExecLib.setStairstepExponentialDecrease(MCD_CLIP_CALC_GUNIV3DAIUSDC2_A, 120 seconds, 9990);
DssExecLib.setIlkAutoLineParameters("GUNIV3DAIUSDC2-A", 10 * MILLION, 10 * MILLION, 8 hours);
// ----------------------------- Rates updates -----------------------------
// https://vote.makerdao.com/polling/QmNqCZGa?network=mainnet
// Increase the ETH-A Stability Fee from 2.5% to 2.75%
DssExecLib.setIlkStabilityFee("ETH-A", TWO_SEVEN_FIVE_PCT_RATE, true);
// Increase the ETH-B Stability Fee from 6.0% to 6.5%
DssExecLib.setIlkStabilityFee("ETH-B", SIX_FIVE_PCT_RATE, true);
// Increase the LINK-A Stability Fee from 1.5% to 2.5%
DssExecLib.setIlkStabilityFee("LINK-A", TWO_FIVE_PCT_RATE, true);
// Increase the MANA-A Stability Fee from 3.0% to 6.0%
DssExecLib.setIlkStabilityFee("MANA-A", SIX_PCT_RATE, true);
// Increase the UNI-A Stability Fee from 1.0% to 3.0%
DssExecLib.setIlkStabilityFee("UNI-A", THREE_PCT_RATE, true);
// Increase the GUSD-A Stability Fee from 0.0% to 1.0%
DssExecLib.setIlkStabilityFee("GUSD-A", ONE_PCT_RATE, true);
// Increase the UNIV2DAIETH-A Stability Fee from 1.5% to 2.0%
DssExecLib.setIlkStabilityFee("UNIV2DAIETH-A", TWO_PCT_RATE, true);
// Increase the UNIV2WBTCETH-A Stability Fee from 2.5% to 3.0%
DssExecLib.setIlkStabilityFee("UNIV2WBTCETH-A", THREE_PCT_RATE, true);
// Increase the UNIV2USDCETH-A Stability Fee from 2.0% to 2.5%
DssExecLib.setIlkStabilityFee("UNIV2USDCETH-A", TWO_FIVE_PCT_RATE, true);
// Increase the UNIV2UNIETH-A Stability Fee from 2.0% to 4.0%
DssExecLib.setIlkStabilityFee("UNIV2UNIETH-A", FOUR_PCT_RATE, true);
// Decrease the GUNIV3DAIUSDC1-A Stability Fee from 0.5% to 0.1%
DssExecLib.setIlkStabilityFee("GUNIV3DAIUSDC1-A", ZERO_ONE_PCT_RATE, true);
// ----------------------------- Debt Ceiling updates -----------------------------
// Increase the WBTC-A Maximum Debt Ceiling (line) from 1.5 billion DAI to 2 billion DAI
// Increase the WBTC-A Target Available Debt (gap) from 60 million DAI to 80 million DAI
// https://vote.makerdao.com/polling/QmNqCZGa?network=mainnet
DssExecLib.setIlkAutoLineParameters("WBTC-A", 2 * BILLION, 80 * MILLION, 6 hours);
// Increase the Dust Parameter from 30,000 DAI to 40,000 DAI for the ETH-B
// https://vote.makerdao.com/polling/QmZXnn16?network=mainnet#poll-detail
DssExecLib.setIlkMinVaultAmount("ETH-B", 40_000);
// Increase the Dust Parameter from 10,000 DAI to 15,000 DAI for all vault-types excluding ETH-B and ETH-C
// https://vote.makerdao.com/polling/QmUYLPcr?network=mainnet#poll-detail
DssExecLib.setIlkMinVaultAmount("ETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("USDC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("WBTC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("TUSD-A", 15_000);
DssExecLib.setIlkMinVaultAmount("MANA-A", 15_000);
DssExecLib.setIlkMinVaultAmount("PAXUSD-A", 15_000);
DssExecLib.setIlkMinVaultAmount("LINK-A", 15_000);
DssExecLib.setIlkMinVaultAmount("YFI-A", 15_000);
DssExecLib.setIlkMinVaultAmount("GUSD-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNI-A", 15_000);
DssExecLib.setIlkMinVaultAmount("RENBTC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2DAIETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2WBTCETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2USDCETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2DAIUSDC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2UNIETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2WBTCDAI-A", 15_000);
DssExecLib.setIlkMinVaultAmount("MATIC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("GUNIV3DAIUSDC1-A", 15_000);
DssExecLib.setIlkMinVaultAmount("WSTETH-A", 15_000);
// ----------------------------- Budget distributions -----------------------------
// Core Unit Budget Distributions
DssExecLib.sendPaymentFromSurplusBuffer(COM_WALLET, 27_058);
// Delegate Compensation Payments
DssExecLib.sendPaymentFromSurplusBuffer(FLIPFLOPFLAP_WALLET, 12_000);
DssExecLib.sendPaymentFromSurplusBuffer(FEEDBLACKLOOPS_WALLET, 12_000);
DssExecLib.sendPaymentFromSurplusBuffer(ULTRASCHUPPI_WALLET, 8_144);
DssExecLib.sendPaymentFromSurplusBuffer(FIELDTECHNOLOGIES_WALLET, 3_690);
// Changelog
DssExecLib.setChangelogAddress("GUNIV3DAIUSDC2", GUNIV3DAIUSDC2);
DssExecLib.setChangelogAddress("MCD_JOIN_GUNIV3DAIUSDC2_A", MCD_JOIN_GUNIV3DAIUSDC2_A);
DssExecLib.setChangelogAddress("MCD_CLIP_GUNIV3DAIUSDC2_A", MCD_CLIP_GUNIV3DAIUSDC2_A);
DssExecLib.setChangelogAddress("MCD_CLIP_CALC_GUNIV3DAIUSDC2_A", MCD_CLIP_CALC_GUNIV3DAIUSDC2_A);
DssExecLib.setChangelogAddress("PIP_GUNIV3DAIUSDC2", PIP_GUNIV3DAIUSDC2);
DssExecLib.setChangelogVersion("1.9.12");
}
}
contract DssSpell is DssExec {
constructor() DssExec(block.timestamp + 30 days, address(new DssSpellAction())) public {}
}
|
----------------------------- Collateral onboarding ----------------------------- Add GUNIV3DAIUSDC2-A as a new Vault Type https:vote.makerdao.com/polling/QmSkHE8T?network=mainnet#poll-detail
|
function actions() public override {
DssExecLib.addNewCollateral(
CollateralOpts({
ilk: "GUNIV3DAIUSDC2-A",
gem: GUNIV3DAIUSDC2,
join: MCD_JOIN_GUNIV3DAIUSDC2_A,
clip: MCD_CLIP_GUNIV3DAIUSDC2_A,
calc: MCD_CLIP_CALC_GUNIV3DAIUSDC2_A,
pip: PIP_GUNIV3DAIUSDC2,
isLiquidatable: false,
isOSM: true,
whitelistOSM: true,
ilkDebtCeiling: 10 * MILLION,
minVaultAmount: 15_000,
maxLiquidationAmount: 5 * MILLION,
liquidationPenalty: 1300,
ilkStabilityFee: ONE_PCT_RATE,
startingPriceFactor: 10500,
breakerTolerance: 9500,
auctionDuration: 220 minutes,
permittedDrop: 9000,
liquidationRatio: 10500,
kprFlatReward: 300,
kprPctReward: 10
})
);
DssExecLib.setStairstepExponentialDecrease(MCD_CLIP_CALC_GUNIV3DAIUSDC2_A, 120 seconds, 9990);
DssExecLib.setIlkAutoLineParameters("GUNIV3DAIUSDC2-A", 10 * MILLION, 10 * MILLION, 8 hours);
DssExecLib.setIlkMinVaultAmount("USDC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("WBTC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("TUSD-A", 15_000);
DssExecLib.setIlkMinVaultAmount("MANA-A", 15_000);
DssExecLib.setIlkMinVaultAmount("PAXUSD-A", 15_000);
DssExecLib.setIlkMinVaultAmount("LINK-A", 15_000);
DssExecLib.setIlkMinVaultAmount("YFI-A", 15_000);
DssExecLib.setIlkMinVaultAmount("GUSD-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNI-A", 15_000);
DssExecLib.setIlkMinVaultAmount("RENBTC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2DAIETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2WBTCETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2USDCETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2DAIUSDC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2UNIETH-A", 15_000);
DssExecLib.setIlkMinVaultAmount("UNIV2WBTCDAI-A", 15_000);
DssExecLib.setIlkMinVaultAmount("MATIC-A", 15_000);
DssExecLib.setIlkMinVaultAmount("GUNIV3DAIUSDC1-A", 15_000);
DssExecLib.setIlkMinVaultAmount("WSTETH-A", 15_000);
DssExecLib.sendPaymentFromSurplusBuffer(FEEDBLACKLOOPS_WALLET, 12_000);
DssExecLib.sendPaymentFromSurplusBuffer(ULTRASCHUPPI_WALLET, 8_144);
DssExecLib.sendPaymentFromSurplusBuffer(FIELDTECHNOLOGIES_WALLET, 3_690);
DssExecLib.setChangelogAddress("MCD_JOIN_GUNIV3DAIUSDC2_A", MCD_JOIN_GUNIV3DAIUSDC2_A);
DssExecLib.setChangelogAddress("MCD_CLIP_GUNIV3DAIUSDC2_A", MCD_CLIP_GUNIV3DAIUSDC2_A);
DssExecLib.setChangelogAddress("MCD_CLIP_CALC_GUNIV3DAIUSDC2_A", MCD_CLIP_CALC_GUNIV3DAIUSDC2_A);
DssExecLib.setChangelogAddress("PIP_GUNIV3DAIUSDC2", PIP_GUNIV3DAIUSDC2);
DssExecLib.setChangelogVersion("1.9.12");
}
| 10,563,666 |
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./full_match/5/0x81c7a9d494c74F113cCa32d174925352bD3875f1/sources/_connext/nxtp-contracts/contracts/core/connext/libraries/ConnextMessage.sol
|
* @notice Converts to a Message @param _message The message @return The newly typed message/
|
function tryAsMessage(bytes29 _message) internal pure returns (bytes29) {
if (isValidMessageLength(_message)) {
return _message.castTo(uint40(Types.Message));
}
return TypedMemView.nullView();
}
| 1,910,711 |
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./partial_match/1/0xa5b8BBdaE8739C0EfA98Ca2d46B93D8C7C1408da/sources/Cryptoz.sol
|
track editionNumberTotal, always increments, starts at 1
|
mapping(uint256 => uint256) public cardTypeToEdition;
| 15,890,003 |
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/**
*Submitted for verification at Etherscan.io on 2022-01-03
*/
// SPDX-License-Identifier: MIT
// Telegram - hnywagmi
pragma solidity 0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transacgtion ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
/**
* @dev Multiplies two int256 variables and fails on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
/**
* @dev Division of two int256 variables and fails on overflow.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256);
// Solidity already throws when dividing by 0.
return a / b;
}
/**
* @dev Subtracts two int256 variables and fails on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
/**
* @dev Adds two int256 variables and fails on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
/**
* @dev Converts to absolute value, and fails on overflow.
*/
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0);
return uint256(a);
}
}
library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256) {
int256 b = int256(a);
require(b >= 0);
return b;
}
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract HNYWAGMI is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
address public constant deadAddress = address(0xdead);
bool private swapping;
address public marketingWallet;
address public devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
uint256 public percentForLPBurn = 25; // 25 = .25%
bool public lpBurnEnabled = true;
uint256 public lpBurnFrequency = 3600 seconds;
uint256 public lastLpBurnTime;
uint256 public manualBurnFrequency = 30 minutes;
uint256 public lastManualLpBurnTime;
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
bool public transferDelayEnabled = true;
uint256 public buyTotalFees;
uint256 public buyMarketingFee;
uint256 public buyLiquidityFee;
uint256 public buyDevFee;
uint256 public sellTotalFees;
uint256 public sellMarketingFee;
uint256 public sellLiquidityFee;
uint256 public sellDevFee;
uint256 public tokensForMarketing;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
/******************/
// exlcude from fees and max transaction amount
mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
// store addresses that a automatic market maker pairs. Any transfer *to* these addresses
// could be subject to a maximum transfer amount
mapping (address => bool) public automatedMarketMakerPairs;
event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
event ExcludeFromFees(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet);
event devWalletUpdated(address indexed newWallet, address indexed oldWallet);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event AutoNukeLP();
event ManualNukeLP();
constructor() ERC20("HNYWAGMI", "HNYWAGMI") {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyMarketingFee = 5;
uint256 _buyLiquidityFee = 5;
uint256 _buyDevFee = 2;
uint256 _sellMarketingFee = 12;
uint256 _sellLiquidityFee = 5;
uint256 _sellDevFee = 8;
uint256 totalSupply = 1 * 1e12 * 1e18;
//maxTransactionAmount = totalSupply * 1 / 100; // 1% maxTransactionAmountTxn
maxTransactionAmount = 10000000000 * 1e18;
maxWallet = totalSupply * 2 / 100; // 2% maxWallet
swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
marketingWallet = address(owner()); // set as marketing wallet
devWallet = address(owner()); // set as dev wallet
// exclude from paying fees or having max transaction amount
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
/*
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
*/
_mint(msg.sender, totalSupply);
}
receive() external payable {
}
// once enabled, can never be turned off
function enableTrading() external onlyOwner {
tradingActive = true;
swapEnabled = true;
lastLpBurnTime = block.timestamp;
}
// remove limits after token is stable
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
return true;
}
// disable Transfer delay - cannot be reenabled
function disableTransferDelay() external onlyOwner returns (bool){
transferDelayEnabled = false;
return true;
}
// change the minimum amount of tokens to sell from fees
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");
swapTokensAtAmount = newAmount;
return true;
}
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%");
maxTransactionAmount = newNum * (10**18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");
maxWallet = newNum * (10**18);
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
// only use to disable contract sales if absolutely necessary (emergency use only)
function updateSwapEnabled(bool enabled) external onlyOwner(){
swapEnabled = enabled;
}
function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 30, "Must keep fees at 30% or less");
}
function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 90, "Must keep fees at 90% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateMarketingWallet(address newMarketingWallet) external onlyOwner {
emit marketingWalletUpdated(newMarketingWallet, marketingWallet);
marketingWallet = newMarketingWallet;
}
function updateDevWallet(address newWallet) external onlyOwner {
emit devWalletUpdated(newWallet, devWallet);
devWallet = newWallet;
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
event BoughtEarly(address indexed sniper);
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
// at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
//when buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
//when sell
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
// if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
// only take fees on buys/sells, do not take on wallet transfers
if(takeFee){
// on sell
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
// on buy
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
deadAddress,
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
bool success;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
// Halve the amount of liquidity tokens
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
(success,) = address(devWallet).call{value: ethForDev}("");
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
(success,) = address(marketingWallet).call{value: address(this).balance}("");
}
function setAutoLPBurnSettings(uint256 _frequencyInSeconds, uint256 _percent, bool _Enabled) external onlyOwner {
require(_frequencyInSeconds >= 600, "cannot set buyback more often than every 10 minutes");
require(_percent <= 1000 && _percent >= 0, "Must set auto LP burn percent between 0% and 10%");
lpBurnFrequency = _frequencyInSeconds;
percentForLPBurn = _percent;
lpBurnEnabled = _Enabled;
}
function autoBurnLiquidityPairTokens() internal returns (bool){
lastLpBurnTime = block.timestamp;
// get balance of liquidity pair
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
// calculate amount to burn
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(10000);
// pull tokens from pancakePair liquidity and move to dead address permanently
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
//sync price since this is not in a swap transaction!
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
pair.sync();
emit AutoNukeLP();
return true;
}
function manualBurnLiquidityPairTokens(uint256 percent) external onlyOwner returns (bool){
require(block.timestamp > lastManualLpBurnTime + manualBurnFrequency , "Must wait for cooldown to finish");
require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
lastManualLpBurnTime = block.timestamp;
// get balance of liquidity pair
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
// calculate amount to burn
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
// pull tokens from pancakePair liquidity and move to dead address permanently
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
//sync price since this is not in a swap transaction!
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
pair.sync();
emit ManualNukeLP();
return true;
}
}
|
Anti-bot and anti-whale mappings and variables exlcude from fees and max transaction amount store addresses that a automatic market maker pairs. Any transfer *to* these addresses could be subject to a maximum transfer amount
|
contract HNYWAGMI is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
address public constant deadAddress = address(0xdead);
bool private swapping;
address public marketingWallet;
address public devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
bool public lpBurnEnabled = true;
uint256 public lpBurnFrequency = 3600 seconds;
uint256 public lastLpBurnTime;
uint256 public manualBurnFrequency = 30 minutes;
uint256 public lastManualLpBurnTime;
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
bool public transferDelayEnabled = true;
uint256 public buyTotalFees;
uint256 public buyMarketingFee;
uint256 public buyLiquidityFee;
uint256 public buyDevFee;
uint256 public sellTotalFees;
uint256 public sellMarketingFee;
uint256 public sellLiquidityFee;
uint256 public sellDevFee;
uint256 public tokensForMarketing;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
mapping (address => bool) public automatedMarketMakerPairs;
event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
event ExcludeFromFees(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet);
event devWalletUpdated(address indexed newWallet, address indexed oldWallet);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event AutoNukeLP();
event ManualNukeLP();
constructor() ERC20("HNYWAGMI", "HNYWAGMI") {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyMarketingFee = 5;
uint256 _buyLiquidityFee = 5;
uint256 _buyDevFee = 2;
uint256 _sellMarketingFee = 12;
uint256 _sellLiquidityFee = 5;
uint256 _sellDevFee = 8;
uint256 totalSupply = 1 * 1e12 * 1e18;
maxTransactionAmount = 10000000000 * 1e18;
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
_mint(msg.sender, totalSupply);
}
receive() external payable {
}
function enableTrading() external onlyOwner {
tradingActive = true;
swapEnabled = true;
lastLpBurnTime = block.timestamp;
}
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
return true;
}
function disableTransferDelay() external onlyOwner returns (bool){
transferDelayEnabled = false;
return true;
}
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");
swapTokensAtAmount = newAmount;
return true;
}
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%");
maxTransactionAmount = newNum * (10**18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");
maxWallet = newNum * (10**18);
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
function updateSwapEnabled(bool enabled) external onlyOwner(){
swapEnabled = enabled;
}
function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 30, "Must keep fees at 30% or less");
}
function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 90, "Must keep fees at 90% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateMarketingWallet(address newMarketingWallet) external onlyOwner {
emit marketingWalletUpdated(newMarketingWallet, marketingWallet);
marketingWallet = newMarketingWallet;
}
function updateDevWallet(address newWallet) external onlyOwner {
emit devWalletUpdated(newWallet, devWallet);
devWallet = newWallet;
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
event BoughtEarly(address indexed sniper);
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
address(this),
tokenAmount,
deadAddress,
block.timestamp
);
}
uniswapV2Router.addLiquidityETH{value: ethAmount}(
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
bool success;
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
bool success;
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
(success,) = address(devWallet).call{value: ethForDev}("");
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
bool success;
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
(success,) = address(marketingWallet).call{value: address(this).balance}("");
function setAutoLPBurnSettings(uint256 _frequencyInSeconds, uint256 _percent, bool _Enabled) external onlyOwner {
require(_frequencyInSeconds >= 600, "cannot set buyback more often than every 10 minutes");
require(_percent <= 1000 && _percent >= 0, "Must set auto LP burn percent between 0% and 10%");
lpBurnFrequency = _frequencyInSeconds;
percentForLPBurn = _percent;
lpBurnEnabled = _Enabled;
}
function autoBurnLiquidityPairTokens() internal returns (bool){
lastLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(10000);
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit AutoNukeLP();
return true;
}
function autoBurnLiquidityPairTokens() internal returns (bool){
lastLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(10000);
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit AutoNukeLP();
return true;
}
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
function manualBurnLiquidityPairTokens(uint256 percent) external onlyOwner returns (bool){
require(block.timestamp > lastManualLpBurnTime + manualBurnFrequency , "Must wait for cooldown to finish");
require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
lastManualLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit ManualNukeLP();
return true;
}
function manualBurnLiquidityPairTokens(uint256 percent) external onlyOwner returns (bool){
require(block.timestamp > lastManualLpBurnTime + manualBurnFrequency , "Must wait for cooldown to finish");
require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
lastManualLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit ManualNukeLP();
return true;
}
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
}
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.3;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
interface IERC20Mintible is IERC20 {
function mint(address account, uint256 amount) external;
}
// Farm distributes the ERC20 rewards based on staked LP to each user.
contract Farm is Ownable {
using SafeERC20 for IERC20;
// Info of each user.
struct UserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
uint256 pending; // Pending total
bool exists;
//
// We do some fancy math here. Basically, any point in time, the amount of ERC20s
// entitled to a user but is pending to be distributed is:
//
// pending reward = (user.amount * pool.accERC20PerShare) - user.rewardDebt
//
// Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
// 1. The pool's `accERC20PerShare` (and `lastRewardBlock`) gets updated.
// 2. User receives the pending reward sent to his/her address.
// 3. User's `amount` gets updated.
// 4. User's `rewardDebt` gets updated.
}
// Info of each pool.
struct PoolInfo {
IERC20 lpToken; // Address of LP token contract.
uint256 allocPoint; // How many allocation points assigned to this pool. ERC20s to distribute per block.
uint256 lastRewardBlock; // Last block number that ERC20s distribution occurs.
uint256 accERC20PerShare; // Accumulated ERC20s per share, times 1e36.
}
// Address of the ERC20 Token contract.
IERC20Mintible public erc20;
// The total amount of ERC20 that's paid out as reward.
uint256 public paidOut = 0;
// ERC20 tokens rewarded per block.
uint256 public rewardPerBlock;
// Info of each pool.
PoolInfo[] public poolInfo;
// Info of each user that stakes LP tokens.
mapping(uint256 => mapping(address => UserInfo)) public userInfo;
// All user addresses
address[] public userAddresses;
// Total allocation points. Must be the sum of all allocation points in all pools.
uint256 public totalAllocPoint = 0;
// The block number when farming starts.
uint256 public startBlock;
// The block number when farming ends.
uint256 public endBlock;
event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
event EmergencyWithdraw(
address indexed user,
uint256 indexed pid,
uint256 amount
);
constructor(
IERC20Mintible _erc20,
uint256 _rewardPerBlock,
uint256 _startBlock
) {
erc20 = _erc20;
rewardPerBlock = _rewardPerBlock;
startBlock = _startBlock;
endBlock = _startBlock;
}
function purge(uint256 amount) public onlyOwner {
require(amount > 0, "No Unsold Token");
erc20.transfer(_msgSender(), amount);
}
// Number of LP pools
function poolLength() external view returns (uint256) {
return poolInfo.length;
}
// Fund the farm, increase the end block
function fund(uint256 _amount) public {
endBlock += _amount / rewardPerBlock;
}
// Add a new lp to the pool. Can only be called by the owner.
// DO NOT add the same LP token more than once. Rewards will be messed up if you do.
function add(
uint256 _allocPoint,
IERC20 _lpToken,
bool _withUpdate
) public onlyOwner {
if (_withUpdate) {
massUpdatePools();
}
uint256 lastRewardBlock =
block.number > startBlock ? block.number : startBlock;
totalAllocPoint = totalAllocPoint + _allocPoint;
poolInfo.push(
PoolInfo({
lpToken: _lpToken,
allocPoint: _allocPoint,
lastRewardBlock: lastRewardBlock,
accERC20PerShare: 0
})
);
}
// Add a new lp to the pool. Can only be called by the owner.
// DO NOT add the same LP token more than once. Rewards will be messed up if you do.
function updateOnAir(
uint256 _allocPoint,
uint256 _rewardPerBlock,
uint256 _amount
) public onlyOwner {
updatePool(0);
PoolInfo storage pool = poolInfo[0];
for (uint256 i = 0; i < userAddresses.length; i++) {
address userAddress = userAddresses[i];
if (userInfo[0][userAddress].amount > 0) {
uint256 pendingAmount =
(userInfo[0][userAddress].amount * pool.accERC20PerShare) /
1e36 -
userInfo[0][userAddress].rewardDebt;
userInfo[0][userAddress].pending = pendingAmount;
}
}
uint256 lastRewardBlock =
block.number > startBlock ? block.number : startBlock;
totalAllocPoint = totalAllocPoint + _allocPoint;
poolInfo[0].allocPoint = _allocPoint;
poolInfo[0].lastRewardBlock = lastRewardBlock;
poolInfo[0].accERC20PerShare = 0;
rewardPerBlock = _rewardPerBlock;
startBlock = block.number;
endBlock = startBlock + _amount / rewardPerBlock;
updatePool(0);
}
// Update the given pool's ERC20 allocation point. Can only be called by the owner.
function set(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyOwner {
if (_withUpdate) {
massUpdatePools();
}
totalAllocPoint =
totalAllocPoint -
poolInfo[_pid].allocPoint +
_allocPoint;
poolInfo[_pid].allocPoint = _allocPoint;
}
// View function to see deposited LP for a user.
function deposited(uint256 _pid, address _user)
external
view
returns (uint256)
{
UserInfo storage user = userInfo[_pid][_user];
return user.amount;
}
// View function to see pending ERC20s for a user.
function pending(uint256 _pid, address _user)
external
view
returns (uint256)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 accERC20PerShare = pool.accERC20PerShare;
uint256 lpSupply = pool.lpToken.balanceOf(address(this));
if (block.number > pool.lastRewardBlock && lpSupply != 0) {
uint256 lastBlock =
block.number < endBlock ? block.number : endBlock;
uint256 nrOfBlocks = lastBlock - pool.lastRewardBlock;
uint256 erc20Reward =
(nrOfBlocks * (rewardPerBlock) * (pool.allocPoint)) /
totalAllocPoint;
accERC20PerShare =
accERC20PerShare +
(erc20Reward * (1e36)) /
lpSupply;
}
return
(user.amount * accERC20PerShare) /
1e36 -
user.rewardDebt +
user.pending;
}
// View function for total reward the farm has yet to pay out.
function totalPending() external view returns (uint256) {
if (block.number <= startBlock) {
return 0;
}
uint256 lastBlock = block.number < endBlock ? block.number : endBlock;
return rewardPerBlock * lastBlock - startBlock - paidOut;
}
// Update reward variables for all pools. Be careful of gas spending!
function massUpdatePools() public {
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
updatePool(pid);
}
}
// Update reward variables of the given pool to be up-to-date.
function updatePool(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
uint256 lastBlock = block.number < endBlock ? block.number : endBlock;
if (lastBlock <= pool.lastRewardBlock) {
return;
}
uint256 lpSupply = pool.lpToken.balanceOf(address(this));
if (lpSupply == 0) {
pool.lastRewardBlock = lastBlock;
return;
}
uint256 nrOfBlocks = lastBlock - pool.lastRewardBlock;
uint256 erc20Reward =
(nrOfBlocks * rewardPerBlock * pool.allocPoint) / totalAllocPoint;
pool.accERC20PerShare =
pool.accERC20PerShare +
(erc20Reward * 1e36) /
lpSupply;
pool.lastRewardBlock = block.number;
}
// Deposit LP tokens to Farm for ERC20 allocation.
function deposit(uint256 _pid, uint256 _amount) public {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
updatePool(_pid);
if (user.amount > 0) {
uint256 pendingAmount =
(user.amount * pool.accERC20PerShare) /
1e36 -
user.rewardDebt +
user.pending;
erc20Transfer(msg.sender, pendingAmount);
}
pool.lpToken.safeTransferFrom(
address(msg.sender),
address(this),
_amount
);
user.amount = user.amount + _amount;
user.rewardDebt = (user.amount * pool.accERC20PerShare) / 1e36;
if (!user.exists) {
userAddresses.push(msg.sender);
user.exists = true;
}
emit Deposit(msg.sender, _pid, _amount);
}
// Withdraw LP tokens from Farm.
function withdraw(uint256 _pid, uint256 _amount) public {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
require(
user.amount >= _amount,
"withdraw: can't withdraw more than deposit"
);
updatePool(_pid);
uint256 pendingAmount =
(user.amount * pool.accERC20PerShare) /
1e36 -
user.rewardDebt +
user.pending;
erc20Transfer(msg.sender, pendingAmount);
user.amount = user.amount - _amount;
user.rewardDebt = (user.amount * pool.accERC20PerShare) / 1e36;
user.pending = 0;
pool.lpToken.safeTransfer(address(msg.sender), _amount);
emit Withdraw(msg.sender, _pid, _amount);
}
// Withdraw without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
pool.lpToken.safeTransfer(address(msg.sender), user.amount);
emit EmergencyWithdraw(msg.sender, _pid, user.amount);
user.amount = 0;
user.rewardDebt = 0;
user.pending = 0;
}
// Transfer ERC20 and update the required ERC20 to payout all rewards
function erc20Transfer(address _to, uint256 _amount) internal {
erc20.mint(address(this), _amount);
erc20.transfer(_to, _amount);
paidOut += _amount;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
|
Add a new lp to the pool. Can only be called by the owner. DO NOT add the same LP token more than once. Rewards will be messed up if you do.
|
function add(
uint256 _allocPoint,
IERC20 _lpToken,
bool _withUpdate
) public onlyOwner {
if (_withUpdate) {
massUpdatePools();
}
uint256 lastRewardBlock =
block.number > startBlock ? block.number : startBlock;
totalAllocPoint = totalAllocPoint + _allocPoint;
poolInfo.push(
PoolInfo({
lpToken: _lpToken,
allocPoint: _allocPoint,
lastRewardBlock: lastRewardBlock,
accERC20PerShare: 0
})
);
}
| 10,025,463 |
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/**
*Submitted for verification at Etherscan.io on 2021-06-13
*/
//SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
// Contract implementation
contract UniAPE is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded; // excluded from reward
address[] private _excluded;
mapping (address => bool) private _isBlackListedBot;
address[] private _blackListedBots;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 2_000_000_000_000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'UniAPE';
string private _symbol = 'uAPE';
uint8 private _decimals = 9;
uint256 private _taxFee = 10; // 5% reflection fee for every holder
uint256 private _burnFee = 0; // burn fee
uint256 private _liquidityFee = 5; // 5% into liquidity
uint256 private _previousTaxFee = _taxFee;
uint256 private _previousburnFee = _burnFee;
uint256 private _previousLiquidityFee = _liquidityFee;
address payable private _burnWalletAddress = payable(0x0000000000000000000000000000000000000001);
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify = false;
bool public swapAndLiquifyEnabled = true;
uint256 private _maxTxAmount = _tTotal;
// We will set a minimum amount of tokens to be swapped
uint256 private _numTokensSellToAddToLiquidity = 100000000 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () public {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // UniswapV2 for Ethereum network
// Create a uniswap pair for this new token
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// set the rest of the contract variables
uniswapV2Router = _uniswapV2Router;
// Exclude owner and this contract from fee
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_burnWalletAddress] = true;
// BLACKLIST
_isBlackListedBot[address(0xE031b36b53E53a292a20c5F08fd1658CDdf74fce)] = true;
_blackListedBots.push(address(0xE031b36b53E53a292a20c5F08fd1658CDdf74fce));
_isBlackListedBot[address(0xe516bDeE55b0b4e9bAcaF6285130De15589B1345)] = true;
_blackListedBots.push(address(0xe516bDeE55b0b4e9bAcaF6285130De15589B1345));
_isBlackListedBot[address(0xa1ceC245c456dD1bd9F2815a6955fEf44Eb4191b)] = true;
_blackListedBots.push(address(0xa1ceC245c456dD1bd9F2815a6955fEf44Eb4191b));
_isBlackListedBot[address(0xd7d3EE77D35D0a56F91542D4905b1a2b1CD7cF95)] = true;
_blackListedBots.push(address(0xd7d3EE77D35D0a56F91542D4905b1a2b1CD7cF95));
_isBlackListedBot[address(0xFe76f05dc59fEC04184fA0245AD0C3CF9a57b964)] = true;
_blackListedBots.push(address(0xFe76f05dc59fEC04184fA0245AD0C3CF9a57b964));
_isBlackListedBot[address(0xDC81a3450817A58D00f45C86d0368290088db848)] = true;
_blackListedBots.push(address(0xDC81a3450817A58D00f45C86d0368290088db848));
_isBlackListedBot[address(0x45fD07C63e5c316540F14b2002B085aEE78E3881)] = true;
_blackListedBots.push(address(0x45fD07C63e5c316540F14b2002B085aEE78E3881));
_isBlackListedBot[address(0x27F9Adb26D532a41D97e00206114e429ad58c679)] = true;
_blackListedBots.push(address(0x27F9Adb26D532a41D97e00206114e429ad58c679));
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcludedFromReward(address account) public view returns (bool) {
return _isExcluded[account];
}
function setExcludeFromFee(address account, bool excluded) external onlyOwner() {
_isExcludedFromFee[account] = excluded;
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function deliver(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeFromReward(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeInReward(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function addBotToBlackList(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not blacklist Uniswap router.');
require(!_isBlackListedBot[account], "Account is already blacklisted");
_isBlackListedBot[account] = true;
_blackListedBots.push(account);
}
function removeBotFromBlackList(address account) external onlyOwner() {
require(_isBlackListedBot[account], "Account is not blacklisted");
for (uint256 i = 0; i < _blackListedBots.length; i++) {
if (_blackListedBots[i] == account) {
_blackListedBots[i] = _blackListedBots[_blackListedBots.length - 1];
_isBlackListedBot[account] = false;
_blackListedBots.pop();
break;
}
}
}
function removeAllFee() private {
if(_taxFee == 0 && _burnFee == 0 && _liquidityFee == 0) return;
_previousTaxFee = _taxFee;
_previousburnFee = _burnFee;
_previousLiquidityFee = _liquidityFee;
_taxFee = 0;
_burnFee = 0;
_liquidityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_burnFee = _previousburnFee;
_liquidityFee = _previousLiquidityFee;
}
function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
require(!_isBlackListedBot[sender], "You have no power here!");
require(!_isBlackListedBot[recipient], "You have no power here!");
require(!_isBlackListedBot[tx.origin], "You have no power here!");
if(sender != owner() && recipient != owner()) {
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
// sorry about that, but sniper bots nowadays are buying multiple times, hope I have something more robust to prevent them to nuke the launch :-(
require(balanceOf(recipient).add(amount) <= _maxTxAmount, "Already bought maxTxAmount, wait till check off");
}
// is the token balance of this contract address over the min number of
// tokens that we need to initiate a swap + liquidity lock?
// also, don't get caught in a circular liquidity event.
// also, don't swap & liquify if sender is uniswap pair.
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
bool overMinTokenBalance = contractTokenBalance >= _numTokensSellToAddToLiquidity;
if (!inSwapAndLiquify && swapAndLiquifyEnabled && overMinTokenBalance && sender != uniswapV2Pair) {
contractTokenBalance = _numTokensSellToAddToLiquidity;
//add liquidity
swapAndLiquify(contractTokenBalance);
}
//indicates if fee should be deducted from transfer
bool takeFee = true;
//if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]){
takeFee = false;
}
//transfer amount, it will take tax and charity fee
_tokenTransfer(sender, recipient, amount, takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 toburn = contractTokenBalance.mul(_burnFee).div(_burnFee.add(_liquidityFee));
uint256 toLiquify = contractTokenBalance.sub(toburn);
// split the contract balance into halves
uint256 half = toLiquify.div(2);
uint256 otherHalf = toLiquify.sub(half);
uint256 initialBalance = address(this).balance;
// swap tokens for ETH
uint256 toSwapForEth = half.add(toburn);
swapTokensForEth(toSwapForEth); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
// how much ETH did we just swap into?
uint256 fromSwap = address(this).balance.sub(initialBalance);
uint256 newBalance = fromSwap.mul(half).div(toSwapForEth);
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
sendETHToburn(fromSwap.sub(newBalance));
}
function swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}
function sendETHToburn(uint256 amount) private {
_burnWalletAddress.transfer(amount);
}
// We are exposing these functions to be able to manual swap and send
// in case the token is highly valued and 5M becomes too much
function manualSwap() external onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() public onlyOwner() {
uint256 contractETHBalance = address(this).balance;
sendETHToburn(contractETHBalance);
}
function setSwapAndLiquifyEnabled(bool _swapAndLiquifyEnabled) external onlyOwner(){
swapAndLiquifyEnabled = _swapAndLiquifyEnabled;
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if(!takeFee)
removeAllFee();
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tburnLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeburnLiquidity(tburnLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tburnLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeburnLiquidity(tburnLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tburnLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeburnLiquidity(tburnLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tburnLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeburnLiquidity(tburnLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeburnLiquidity(uint256 tburnLiquidity) private {
uint256 currentRate = _getRate();
uint256 rburnLiquidity = tburnLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rburnLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tburnLiquidity);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
//to recieve ETH from uniswapV2Router when swapping
receive() external payable {}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tburnLiquidityFee) = _getTValues(tAmount, _taxFee, _burnFee.add(_liquidityFee));
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tburnLiquidityFee);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 burnLiquidityFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tburnLiquidityFee = tAmount.mul(burnLiquidityFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(burnLiquidityFee);
return (tTransferAmount, tFee, tburnLiquidityFee);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _getTaxFee() private view returns(uint256) {
return _taxFee;
}
function _getMaxTxAmount() private view returns(uint256) {
return _maxTxAmount;
}
function _getETHBalance() public view returns(uint256 balance) {
return address(this).balance;
}
function _setTaxFee(uint256 taxFee) external onlyOwner() {
require(taxFee >= 1 && taxFee <= 49, 'taxFee should be in 1 - 49');
_taxFee = taxFee;
}
function _setburnFee(uint256 burnFee) external onlyOwner() {
require(burnFee >= 0 && burnFee <= 49, 'burnFee should be in 0 - 11');
_burnFee = burnFee;
}
function _setLiquidityFee(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 49, 'liquidityFee should be in 1 - 11');
_liquidityFee = liquidityFee;
}
function _setNumTokensSellToAddToLiquidity(uint256 numTokensSellToAddToLiquidity) external onlyOwner() {
require(numTokensSellToAddToLiquidity >= 10**9 , 'numTokensSellToAddToLiquidity should be greater than total 1e9');
_numTokensSellToAddToLiquidity = numTokensSellToAddToLiquidity;
}
function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
require(maxTxAmount >= 10**9 , 'maxTxAmount should be greater than total 1e9');
_maxTxAmount = maxTxAmount;
}
function recoverTokens(uint256 tokenAmount) public virtual onlyOwner() {
_approve(address(this), owner(), tokenAmount);
_transfer(address(this), owner(), tokenAmount);
}
}
|
split the contract balance into halves swap tokens for ETH how much ETH did we just swap into? add liquidity to uniswap
|
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 toburn = contractTokenBalance.mul(_burnFee).div(_burnFee.add(_liquidityFee));
uint256 toLiquify = contractTokenBalance.sub(toburn);
uint256 half = toLiquify.div(2);
uint256 otherHalf = toLiquify.sub(half);
uint256 initialBalance = address(this).balance;
uint256 toSwapForEth = half.add(toburn);
uint256 fromSwap = address(this).balance.sub(initialBalance);
uint256 newBalance = fromSwap.mul(half).div(toSwapForEth);
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
sendETHToburn(fromSwap.sub(newBalance));
}
| 10,664,886 |
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] |
./partial_match/1/0x2C601662aB9abb12Ce53Dc2B3cB44AFa1889c5e7/sources/EdFiBoostToken.sol
|
* @dev String operations./
|
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
}
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
| 4,043,568 |
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./full_match/25/0xBf0Ca142dE65250c38B9C682c5Dd51d56E18dF6A/sources/gist-c1eb4b41642a69b5a7232840482b6e91/Address.sol
|
* @dev Collection of functions related to the address type/
|
library Address {
function isContract(address account) internal view returns (bool) {
return account.code.length > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
require(success, "Address: unable to send value, recipient may have reverted");
}
(bool success, ) = recipient.call{value: amount}("");
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
return verifyCallResult(success, returndata, errorMessage);
}
(bool success, bytes memory returndata) = target.call{value: value}(data);
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
revert(errorMessage);
}
}
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
revert(errorMessage);
}
}
}
} else {
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
revert(errorMessage);
}
}
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
revert(errorMessage);
}
}
}
} else {
}
| 16,382,263 |
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] |
./partial_match/1/0xDC90F8eb19F30963Cf9A64dc355BF904849a82Cc/sources/ETF.sol
|
withdraw ETH if stuck or someone sends to the address
|
function withdrawStuckETH() external {
require(msg.sender == address(daoAddress), "nope");
bool success;
""
);
}
| 4,180,684 |
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] |
./full_match/3/0x0C4137CB28aAd5d694AB9469b6956807Dfec442c/sources/SecondContract.sol
|
The following function call will fail
|
function access(address _target) external {
FirstContract(_target).protected();
}
| 8,239,307 |
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./full_match/1/0xdf8d9c9f46785E1e333fdb67E1BFc06a4Ad33A99/sources/contracts/validators/QueryValidatorOffChain.sol
|
The non-empty state is returned, and it's not equal to the state that the user has provided. Get the time of the latest state and compare it to the transition time of state provided by the user.
|
function _checkClaimNonRevState(uint256 id_, uint256 claimNonRevState_) internal view {
IState.StateInfo memory claimNonRevStateInfo_ = state.getStateInfoById(id_);
if (claimNonRevStateInfo_.state == 0) {
require(
GenesisUtils.isGenesisState(id_, claimNonRevState_),
"QueryMTPValidatorOffChain: non-revocation state isn't in state contract and not genesis"
);
if (claimNonRevStateInfo_.state != claimNonRevState_) {
IState.StateInfo memory claimNonRevLatestStateInfo_ = state
.getStateInfoByIdAndState(id_, claimNonRevState_);
if (claimNonRevLatestStateInfo_.id == 0 || claimNonRevLatestStateInfo_.id != id_) {
revert(
"QueryMTPValidatorOffChain: state in transition info contains invalid id"
);
}
if (claimNonRevLatestStateInfo_.replacedAtTimestamp == 0) {
revert(
"QueryMTPValidatorOffChain: non-latest state doesn't contain replacement information"
);
}
if (
block.timestamp - claimNonRevLatestStateInfo_.replacedAtTimestamp >
revocationStateExpirationTime
) {
revert("QueryMTPValidatorOffChain: non-revocation state of Issuer expired");
}
}
}
}
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./partial_match/1/0x4bcBE3C4365b8D713DF8ed4c93e5bA761548Cdd5/sources/GLORY.sol
|
block number of opened trading exclude from fees and max transaction amount store addresses that a automatic market maker pairs. Any transfer *to* these addresses could be subject to a maximum transfer amount
|
contract GLORY is ERC20, Ownable {
string _name = "Blades of Glory";
string _symbol = unicode"GLORY";
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool private isSwapping;
uint256 public balance;
address private treasuryWallet;
uint256 public maxTx;
uint256 public swapTreshold;
uint256 public maxWallet;
bool public limitsActive = true;
bool public shouldContractSellAll = false;
uint256 public buyTotalFees;
uint256 public buyTreasuryFee;
uint256 public buyLiquidityFee;
uint256 public sellTotalFees;
uint256 public sellTreasuryFee;
uint256 public sellLiquidityFee;
uint256 public tokensForLiquidity;
uint256 public tokensForTreasury;
uint256 launchedAt;
mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
mapping (address => bool) public automatedMarketMakerPairs;
event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
event ExcludeFromFees(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event treasuryWalletUpdated(address indexed newWallet, address indexed oldWallet);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event AutoNukeLP();
event ManualNukeLP();
constructor() ERC20(_name, _symbol) {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyTreasuryFee = 15;
uint256 _buyLiquidityFee = 0;
uint256 _sellTreasuryFee = 25;
uint256 _sellLiquidityFee = 0;
uint256 totalSupply = 100000000 * 1e18;
buyTreasuryFee = _buyTreasuryFee;
buyLiquidityFee = _buyLiquidityFee;
buyTotalFees = buyTreasuryFee + buyLiquidityFee;
sellTreasuryFee = _sellTreasuryFee;
sellLiquidityFee = _sellLiquidityFee;
sellTotalFees = sellTreasuryFee + sellLiquidityFee;
treasuryWallet = address(0xeB1Db515a732FD56a04217fBf3c00702C67Dc240);
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromFees(address(treasuryWallet), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
excludeFromMaxTransaction(address(treasuryWallet), true);
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
_mint(address(this), totalSupply);
}
receive() external payable {
}
function ContractTradingOn() external onlyOwner{
uint256 ethAmount = address(this).balance;
uint256 tokenAmount = balanceOf(address(this));
_approve(address(this), address(uniswapV2Router), tokenAmount);
address(this),
tokenAmount,
treasuryWallet,
block.timestamp
);
}
uniswapV2Router.addLiquidityETH{value: ethAmount}(
function UnstuckEth() external onlyOwner {
uint256 ethBalance = address(this).balance;
require(ethBalance > 0, "ETH balance must be greater than 0");
require(success, "Failed to clear ETH balance");
}
(bool success,) = address(treasuryWallet).call{value: ethBalance}("");
function ClearStuckEth() external onlyOwner {
uint256 tokenBalance = balanceOf(address(this));
require(tokenBalance > 0, "Token balance must be greater than 0");
_transfer(address(this), treasuryWallet, tokenBalance);
}
function removeLimits() external onlyOwner returns (bool){
limitsActive = false;
return true;
}
function enableEmptyContract(bool enabled) external onlyOwner{
shouldContractSellAll = enabled;
}
function updateSwapTreshold(uint256 newAmount) external onlyOwner returns (bool){
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");
swapTreshold = newAmount;
return true;
}
function updateLimits(uint256 _maxTx, uint256 _maxWallet) external onlyOwner {
require(_maxTx >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%");
require(_maxWallet >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");
maxTx = _maxTx * (10**18);
maxWallet = _maxWallet * (10**18);
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
function updateTax(
uint256 _liquidityBuyFee,
uint256 _liquiditySellFee,
uint256 _treasuryBuyFee,
uint256 _treasurySellFee
) external onlyOwner {
buyLiquidityFee = _liquidityBuyFee;
buyTreasuryFee = _treasuryBuyFee;
buyTotalFees = buyLiquidityFee + buyTreasuryFee;
sellLiquidityFee = _liquiditySellFee;
sellTreasuryFee = _treasurySellFee;
sellTotalFees = sellLiquidityFee + sellTreasuryFee;
require(buyTotalFees <= 30 && sellTotalFees <= 30, "Fees cannot be higher then 30%");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateTreasuryAddress(address newTreasuryWallet) external onlyOwner{
emit treasuryWalletUpdated(newTreasuryWallet, treasuryWallet);
treasuryWallet = newTreasuryWallet;
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(limitsActive){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!isSwapping
){
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTx, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTx, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if(!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTreshold;
if(
canSwap &&
!isSwapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
isSwapping = true;
swapBack();
isSwapping = false;
}
bool takeFee = !isSwapping;
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if(takeFee){
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForTreasury += fees * sellTreasuryFee / sellTotalFees;
}
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForTreasury += fees * buyTreasuryFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
address(this),
tokenAmount,
address(this),
block.timestamp
);
}
uniswapV2Router.addLiquidityETH{value: ethAmount}(
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForTreasury;
bool success;
if(shouldContractSellAll == false){
if(contractBalance > swapTreshold * 20){
contractBalance = swapTreshold * 20;
}
contractBalance = balanceOf(address(this));
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForTreasury).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing;
tokensForLiquidity = 0;
tokensForTreasury = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForTreasury;
bool success;
if(shouldContractSellAll == false){
if(contractBalance > swapTreshold * 20){
contractBalance = swapTreshold * 20;
}
contractBalance = balanceOf(address(this));
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForTreasury).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing;
tokensForLiquidity = 0;
tokensForTreasury = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForTreasury;
bool success;
if(shouldContractSellAll == false){
if(contractBalance > swapTreshold * 20){
contractBalance = swapTreshold * 20;
}
contractBalance = balanceOf(address(this));
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForTreasury).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing;
tokensForLiquidity = 0;
tokensForTreasury = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
}else{
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForTreasury;
bool success;
if(shouldContractSellAll == false){
if(contractBalance > swapTreshold * 20){
contractBalance = swapTreshold * 20;
}
contractBalance = balanceOf(address(this));
}
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForTreasury).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing;
tokensForLiquidity = 0;
tokensForTreasury = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
}
(success,) = address(treasuryWallet).call{value: address(this).balance}("");
}
| 4,466,884 |
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] |
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/ERC20Wrapper.sol)
pragma solidity ^0.8.0;
import "../ERC20Upgradeable.sol";
import "../utils/SafeERC20Upgradeable.sol";
import { ERC20WrapperStorage } from "./ERC20WrapperStorage.sol";
import "../../../proxy/utils/Initializable.sol";
/**
* @dev Extension of the ERC20 token contract to support token wrapping.
*
* Users can deposit and withdraw "underlying tokens" and receive a matching number of "wrapped tokens". This is useful
* in conjunction with other modules. For example, combining this wrapping mechanism with {ERC20Votes} will allow the
* wrapping of an existing "basic" ERC20 into a governance token.
*
* _Available since v4.2._
*/
abstract contract ERC20WrapperUpgradeable is Initializable, ERC20Upgradeable {
using ERC20WrapperStorage for ERC20WrapperStorage.Layout;
function __ERC20Wrapper_init(IERC20Upgradeable underlyingToken) internal onlyInitializing {
__Context_init_unchained();
__ERC20Wrapper_init_unchained(underlyingToken);
}
function __ERC20Wrapper_init_unchained(IERC20Upgradeable underlyingToken) internal onlyInitializing {
ERC20WrapperStorage.layout().underlying = underlyingToken;
}
/**
* @dev Allow a user to deposit underlying tokens and mint the corresponding number of wrapped tokens.
*/
function depositFor(address account, uint256 amount) public virtual returns (bool) {
SafeERC20Upgradeable.safeTransferFrom(ERC20WrapperStorage.layout().underlying, _msgSender(), address(this), amount);
_mint(account, amount);
return true;
}
/**
* @dev Allow a user to burn a number of wrapped tokens and withdraw the corresponding number of underlying tokens.
*/
function withdrawTo(address account, uint256 amount) public virtual returns (bool) {
_burn(_msgSender(), amount);
SafeERC20Upgradeable.safeTransfer(ERC20WrapperStorage.layout().underlying, account, amount);
return true;
}
/**
* @dev Mint wrapped token to cover any underlyingTokens that would have been transfered by mistake. Internal
* function that can be exposed with access control if desired.
*/
function _recover(address account) internal virtual returns (uint256) {
uint256 value = ERC20WrapperStorage.layout().underlying.balanceOf(address(this)) - totalSupply();
_mint(account, value);
return value;
}
// generated getter for ${varDecl.name}
function underlying() public view returns(IERC20Upgradeable) {
return ERC20WrapperStorage.layout().underlying;
}
}
|
* @dev Mint wrapped token to cover any underlyingTokens that would have been transfered by mistake. Internal function that can be exposed with access control if desired./
|
function _recover(address account) internal virtual returns (uint256) {
uint256 value = ERC20WrapperStorage.layout().underlying.balanceOf(address(this)) - totalSupply();
_mint(account, value);
return value;
}
| 6,351,908 |
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/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import { Compound } from "../integration/lib/Compound.sol";
import { ICErc20 } from "../../interfaces/external/ICErc20.sol";
import { IComptroller } from "../../interfaces/external/IComptroller.sol";
import { IController } from "../../interfaces/IController.sol";
import { IDebtIssuanceModule } from "../../interfaces/IDebtIssuanceModule.sol";
import { IExchangeAdapter } from "../../interfaces/IExchangeAdapter.sol";
import { ISetToken } from "../../interfaces/ISetToken.sol";
import { ModuleBase } from "../lib/ModuleBase.sol";
/**
* @title CompoundLeverageModule
* @author Set Protocol
*
* Smart contract that enables leverage trading using Compound as the lending protocol. This module is paired with a debt issuance module that will call
* functions on this module to keep interest accrual and liquidation state updated. This does not allow borrowing of assets from Compound alone. Each
* asset is leveraged when using this module.
*
* Note: Do not use this module in conjunction with other debt modules that allow Compound debt positions as it could lead to double counting of
* debt when borrowed assets are the same.
*
*/
contract CompoundLeverageModule is ModuleBase, ReentrancyGuard, Ownable {
using Compound for ISetToken;
/* ============ Structs ============ */
struct EnabledAssets {
address[] collateralCTokens; // Array of enabled cToken collateral assets for a SetToken
address[] borrowCTokens; // Array of enabled cToken borrow assets for a SetToken
address[] borrowAssets; // Array of underlying borrow assets that map to the array of enabled cToken borrow assets
}
struct ActionInfo {
ISetToken setToken; // SetToken instance
IExchangeAdapter exchangeAdapter; // Exchange adapter instance
uint256 setTotalSupply; // Total supply of SetToken
uint256 notionalSendQuantity; // Total notional quantity sent to exchange
uint256 minNotionalReceiveQuantity; // Min total notional received from exchange
ICErc20 collateralCTokenAsset; // Address of cToken collateral asset
ICErc20 borrowCTokenAsset; // Address of cToken borrow asset
uint256 preTradeReceiveTokenBalance; // Balance of pre-trade receive token balance
}
/* ============ Events ============ */
event LeverageIncreased(
ISetToken indexed _setToken,
IERC20 indexed _borrowAsset,
IERC20 indexed _collateralAsset,
IExchangeAdapter _exchangeAdapter,
uint256 _totalBorrowAmount,
uint256 _totalReceiveAmount,
uint256 _protocolFee
);
event LeverageDecreased(
ISetToken indexed _setToken,
IERC20 indexed _collateralAsset,
IERC20 indexed _repayAsset,
IExchangeAdapter _exchangeAdapter,
uint256 _totalRedeemAmount,
uint256 _totalRepayAmount,
uint256 _protocolFee
);
event CollateralAssetsUpdated(
ISetToken indexed _setToken,
bool indexed _added,
IERC20[] _assets
);
event BorrowAssetsUpdated(
ISetToken indexed _setToken,
bool indexed _added,
IERC20[] _assets
);
event SetTokenStatusUpdated(
ISetToken indexed _setToken,
bool indexed _added
);
event AnySetAllowedUpdated(
bool indexed _anySetAllowed
);
/* ============ Constants ============ */
// String identifying the DebtIssuanceModule in the IntegrationRegistry. Note: Governance must add DefaultIssuanceModule as
// the string as the integration name
string constant internal DEFAULT_ISSUANCE_MODULE_NAME = "DefaultIssuanceModule";
// 0 index stores protocol fee % on the controller, charged in the trade function
uint256 constant internal PROTOCOL_TRADE_FEE_INDEX = 0;
/* ============ State Variables ============ */
// Mapping of underlying to CToken. If ETH, then map WETH to cETH
mapping(IERC20 => ICErc20) public underlyingToCToken;
// Wrapped Ether address
IERC20 internal weth;
// Compound cEther address
ICErc20 internal cEther;
// Compound Comptroller contract
IComptroller internal comptroller;
// COMP token address
IERC20 internal compToken;
// Mapping to efficiently check if cToken market for collateral asset is valid in SetToken
mapping(ISetToken => mapping(ICErc20 => bool)) public collateralCTokenEnabled;
// Mapping to efficiently check if cToken market for borrow asset is valid in SetToken
mapping(ISetToken => mapping(ICErc20 => bool)) public borrowCTokenEnabled;
// Mapping of enabled collateral and borrow cTokens for syncing positions
mapping(ISetToken => EnabledAssets) internal enabledAssets;
// Mapping of SetToken to boolean indicating if SetToken is on allow list. Updateable by governance
mapping(ISetToken => bool) public allowedSetTokens;
// Boolean that returns if any SetToken can initialize this module. If false, then subject to allow list
bool public anySetAllowed;
/* ============ Constructor ============ */
/**
* Instantiate addresses. Underlying to cToken mapping is created.
*
* @param _controller Address of controller contract
* @param _compToken Address of COMP token
* @param _comptroller Address of Compound Comptroller
* @param _cEther Address of cEther contract
* @param _weth Address of WETH contract
*/
constructor(
IController _controller,
IERC20 _compToken,
IComptroller _comptroller,
ICErc20 _cEther,
IERC20 _weth
)
public
ModuleBase(_controller)
{
compToken = _compToken;
comptroller = _comptroller;
cEther = _cEther;
weth = _weth;
ICErc20[] memory cTokens = comptroller.getAllMarkets();
for(uint256 i = 0; i < cTokens.length; i++) {
ICErc20 cToken = cTokens[i];
underlyingToCToken[
cToken == _cEther ? _weth : IERC20(cTokens[i].underlying())
] = cToken;
}
}
/* ============ External Functions ============ */
/**
* MANAGER ONLY: Increases leverage for a given collateral position using an enabled borrow asset that is enabled.
* Performs a DEX trade, exchanging the borrow asset for collateral asset.
*
* @param _setToken Instance of the SetToken
* @param _borrowAsset Address of asset being borrowed for leverage
* @param _collateralAsset Address of collateral asset (underlying of cToken)
* @param _borrowQuantity Borrow quantity of asset in position units
* @param _minReceiveQuantity Min receive quantity of collateral asset to receive post-trade in position units
* @param _tradeAdapterName Name of trade adapter
* @param _tradeData Arbitrary data for trade
*/
function lever(
ISetToken _setToken,
IERC20 _borrowAsset,
IERC20 _collateralAsset,
uint256 _borrowQuantity,
uint256 _minReceiveQuantity,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
// For levering up, send quantity is derived from borrow asset and receive quantity is derived from
// collateral asset
ActionInfo memory leverInfo = _createAndValidateActionInfo(
_setToken,
_borrowAsset,
_collateralAsset,
_borrowQuantity,
_minReceiveQuantity,
_tradeAdapterName,
true
);
_borrow(leverInfo.setToken, leverInfo.borrowCTokenAsset, leverInfo.notionalSendQuantity);
uint256 postTradeReceiveQuantity = _executeTrade(leverInfo, _borrowAsset, _collateralAsset, _tradeData);
uint256 protocolFee = _accrueProtocolFee(_setToken, _collateralAsset, postTradeReceiveQuantity);
uint256 postTradeCollateralQuantity = postTradeReceiveQuantity.sub(protocolFee);
_mintCToken(leverInfo.setToken, leverInfo.collateralCTokenAsset, _collateralAsset, postTradeCollateralQuantity);
_updateLeverPositions(leverInfo, _borrowAsset);
emit LeverageIncreased(
_setToken,
_borrowAsset,
_collateralAsset,
leverInfo.exchangeAdapter,
leverInfo.notionalSendQuantity,
postTradeCollateralQuantity,
protocolFee
);
}
/**
* MANAGER ONLY: Decrease leverage for a given collateral position using an enabled borrow asset that is enabled
*
* @param _setToken Instance of the SetToken
* @param _collateralAsset Address of collateral asset (underlying of cToken)
* @param _repayAsset Address of asset being repaid
* @param _redeemQuantity Quantity of collateral asset to delever
* @param _minRepayQuantity Minimum amount of repay asset to receive post trade
* @param _tradeAdapterName Name of trade adapter
* @param _tradeData Arbitrary data for trade
*/
function delever(
ISetToken _setToken,
IERC20 _collateralAsset,
IERC20 _repayAsset,
uint256 _redeemQuantity,
uint256 _minRepayQuantity,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
// Note: for delevering, send quantity is derived from collateral asset and receive quantity is derived from
// repay asset
ActionInfo memory deleverInfo = _createAndValidateActionInfo(
_setToken,
_collateralAsset,
_repayAsset,
_redeemQuantity,
_minRepayQuantity,
_tradeAdapterName,
false
);
_redeemUnderlying(deleverInfo.setToken, deleverInfo.collateralCTokenAsset, deleverInfo.notionalSendQuantity);
uint256 postTradeReceiveQuantity = _executeTrade(deleverInfo, _collateralAsset, _repayAsset, _tradeData);
uint256 protocolFee = _accrueProtocolFee(_setToken, _repayAsset, postTradeReceiveQuantity);
uint256 repayQuantity = postTradeReceiveQuantity.sub(protocolFee);
_repayBorrow(deleverInfo.setToken, deleverInfo.borrowCTokenAsset, _repayAsset, repayQuantity);
_updateLeverPositions(deleverInfo, _repayAsset);
emit LeverageDecreased(
_setToken,
_collateralAsset,
_repayAsset,
deleverInfo.exchangeAdapter,
deleverInfo.notionalSendQuantity,
repayQuantity,
protocolFee
);
}
/**
* MANAGER ONLY: Pays down the borrow asset to 0 selling off a given collateral asset. Any extra received
* borrow asset is updated as equity. No protocol fee is charged.
*
* @param _setToken Instance of the SetToken
* @param _collateralAsset Address of collateral asset (underlying of cToken)
* @param _repayAsset Address of asset being repaid (underlying asset e.g. DAI)
* @param _redeemQuantity Quantity of collateral asset to delever
* @param _tradeAdapterName Name of trade adapter
* @param _tradeData Arbitrary data for trade
*/
function deleverToZeroBorrowBalance(
ISetToken _setToken,
IERC20 _collateralAsset,
IERC20 _repayAsset,
uint256 _redeemQuantity,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
uint256 notionalRedeemQuantity = _redeemQuantity.preciseMul(_setToken.totalSupply());
require(borrowCTokenEnabled[_setToken][underlyingToCToken[_repayAsset]], "Borrow not enabled");
uint256 notionalRepayQuantity = underlyingToCToken[_repayAsset].borrowBalanceCurrent(address(_setToken));
ActionInfo memory deleverInfo = _createAndValidateActionInfoNotional(
_setToken,
_collateralAsset,
_repayAsset,
notionalRedeemQuantity,
notionalRepayQuantity,
_tradeAdapterName,
false
);
_redeemUnderlying(deleverInfo.setToken, deleverInfo.collateralCTokenAsset, deleverInfo.notionalSendQuantity);
_executeTrade(deleverInfo, _collateralAsset, _repayAsset, _tradeData);
// We use notionalRepayQuantity vs. Compound's max value uint256(-1) to handle WETH properly
_repayBorrow(deleverInfo.setToken, deleverInfo.borrowCTokenAsset, _repayAsset, notionalRepayQuantity);
// Update default position first to save gas on editing borrow position
_setToken.calculateAndEditDefaultPosition(
address(_repayAsset),
deleverInfo.setTotalSupply,
deleverInfo.preTradeReceiveTokenBalance
);
_updateLeverPositions(deleverInfo, _repayAsset);
emit LeverageDecreased(
_setToken,
_collateralAsset,
_repayAsset,
deleverInfo.exchangeAdapter,
deleverInfo.notionalSendQuantity,
notionalRepayQuantity,
0 // No protocol fee
);
}
/**
* CALLABLE BY ANYBODY: Sync Set positions with enabled Compound collateral and borrow positions. For collateral
* assets, update cToken default position. For borrow assets, update external borrow position.
* - Collateral assets may come out of sync when a position is liquidated
* - Borrow assets may come out of sync when interest is accrued or position is liquidated and borrow is repaid
*
* @param _setToken Instance of the SetToken
* @param _shouldAccrueInterest Boolean indicating whether use current block interest rate value or stored value
*/
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
// Only sync positions when Set supply is not 0. This preserves debt and collateral positions on issuance / redemption
if (setTotalSupply > 0) {
// Loop through collateral assets
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
// Note: Accounts for if position does not exist on SetToken but is tracked in enabledAssets
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
// Loop through borrow assets
address[] memory borrowCTokens = enabledAssets[_setToken].borrowCTokens;
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
// Note: Accounts for if position does not exist on SetToken but is tracked in enabledAssets
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
/**
* MANAGER ONLY: Initializes this module to the SetToken. Only callable by the SetToken's manager. Note: managers can enable
* collateral and borrow assets that don't exist as positions on the SetToken
*
* @param _setToken Instance of the SetToken to initialize
* @param _collateralAssets Underlying tokens to be enabled as collateral in the SetToken
* @param _borrowAssets Underlying tokens to be enabled as borrow in the SetToken
*/
function initialize(
ISetToken _setToken,
IERC20[] memory _collateralAssets,
IERC20[] memory _borrowAssets
)
external
onlySetManager(_setToken, msg.sender)
onlyValidAndPendingSet(_setToken)
{
if (!anySetAllowed) {
require(allowedSetTokens[_setToken], "Not allowed SetToken");
}
// Initialize module before trying register
_setToken.initializeModule();
// Get debt issuance module registered to this module and require that it is initialized
require(_setToken.isInitializedModule(getAndValidateAdapter(DEFAULT_ISSUANCE_MODULE_NAME)), "Issuance not initialized");
// Try if register exists on any of the modules including the debt issuance module
address[] memory modules = _setToken.getModules();
for(uint256 i = 0; i < modules.length; i++) {
try IDebtIssuanceModule(modules[i]).registerToIssuanceModule(_setToken) {} catch {}
}
// Enable collateral and borrow assets on Compound
addCollateralAssets(_setToken, _collateralAssets);
addBorrowAssets(_setToken, _borrowAssets);
}
/**
* MANAGER ONLY: Removes this module from the SetToken, via call by the SetToken. Compound Settings and manager enabled
* cTokens are deleted. Markets are exited on Comptroller (only valid if borrow balances are zero)
*/
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
// Sync Compound and SetToken positions prior to any removal action
sync(setToken, true);
address[] memory borrowCTokens = enabledAssets[setToken].borrowCTokens;
for (uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 cToken = ICErc20(borrowCTokens[i]);
// Will exit only if token isn't also being used as collateral
if(!collateralCTokenEnabled[setToken][cToken]) {
// Note: if there is an existing borrow balance, will revert and market cannot be exited on Compound
setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[setToken][cToken];
}
address[] memory collateralCTokens = enabledAssets[setToken].collateralCTokens;
for (uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 cToken = ICErc20(collateralCTokens[i]);
setToken.invokeExitMarket(cToken, comptroller);
delete collateralCTokenEnabled[setToken][cToken];
}
delete enabledAssets[setToken];
// Try if unregister exists on any of the modules
address[] memory modules = setToken.getModules();
for(uint256 i = 0; i < modules.length; i++) {
try IDebtIssuanceModule(modules[i]).unregisterFromIssuanceModule(setToken) {} catch {}
}
}
/**
* MANAGER ONLY: Add registration of this module on debt issuance module for the SetToken. Note: if the debt issuance module is not added to SetToken
* before this module is initialized, then this function needs to be called if the debt issuance module is later added and initialized to prevent state
* inconsistencies
*
* @param _setToken Instance of the SetToken
* @param _debtIssuanceModule Debt issuance module address to register
*/
function registerToModule(ISetToken _setToken, IDebtIssuanceModule _debtIssuanceModule) external onlyManagerAndValidSet(_setToken) {
require(_setToken.isInitializedModule(address(_debtIssuanceModule)), "Issuance not initialized");
_debtIssuanceModule.registerToIssuanceModule(_setToken);
}
/**
* MANAGER ONLY: Add enabled collateral assets. Collateral assets are tracked for syncing positions and entered in Compound markets
*
* @param _setToken Instance of the SetToken
* @param _newCollateralAssets Addresses of new collateral underlying assets
*/
function addCollateralAssets(ISetToken _setToken, IERC20[] memory _newCollateralAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newCollateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_newCollateralAssets[i]];
require(address(cToken) != address(0), "cToken must exist");
require(!collateralCTokenEnabled[_setToken][cToken], "Collateral enabled");
// Note: Will only enter market if cToken is not enabled as a borrow asset as well
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
collateralCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].collateralCTokens.push(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, true, _newCollateralAssets);
}
/**
* MANAGER ONLY: Remove collateral asset. Collateral asset exited in Compound markets
* If there is a borrow balance, collateral asset cannot be removed
*
* @param _setToken Instance of the SetToken
* @param _collateralAssets Addresses of collateral underlying assets to remove
*/
function removeCollateralAssets(ISetToken _setToken, IERC20[] memory _collateralAssets) external onlyManagerAndValidSet(_setToken) {
// Sync Compound and SetToken positions prior to any removal action
sync(_setToken, true);
for(uint256 i = 0; i < _collateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_collateralAssets[i]];
require(collateralCTokenEnabled[_setToken][cToken], "Collateral not enabled");
// Note: Will only exit market if cToken is not enabled as a borrow asset as well
// If there is an existing borrow balance, will revert and market cannot be exited on Compound
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete collateralCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].collateralCTokens.removeStorage(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, false, _collateralAssets);
}
/**
* MANAGER ONLY: Add borrow asset. Borrow asset is tracked for syncing positions and entered in Compound markets
*
* @param _setToken Instance of the SetToken
* @param _newBorrowAssets Addresses of borrow underlying assets to add
*/
function addBorrowAssets(ISetToken _setToken, IERC20[] memory _newBorrowAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newBorrowAssets.length; i++) {
IERC20 newBorrowAsset = _newBorrowAssets[i];
ICErc20 cToken = underlyingToCToken[newBorrowAsset];
require(address(cToken) != address(0), "cToken must exist");
require(!borrowCTokenEnabled[_setToken][cToken], "Borrow enabled");
// Note: Will only enter market if cToken is not enabled as a borrow asset as well
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
borrowCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].borrowCTokens.push(address(cToken));
enabledAssets[_setToken].borrowAssets.push(address(newBorrowAsset));
}
emit BorrowAssetsUpdated(_setToken, true, _newBorrowAssets);
}
/**
* MANAGER ONLY: Remove borrow asset. Borrow asset is exited in Compound markets
* If there is a borrow balance, borrow asset cannot be removed
*
* @param _setToken Instance of the SetToken
* @param _borrowAssets Addresses of borrow underlying assets to remove
*/
function removeBorrowAssets(ISetToken _setToken, IERC20[] memory _borrowAssets) external onlyManagerAndValidSet(_setToken) {
// Sync Compound and SetToken positions prior to any removal action
sync(_setToken, true);
for(uint256 i = 0; i < _borrowAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_borrowAssets[i]];
require(borrowCTokenEnabled[_setToken][cToken], "Borrow not enabled");
// Note: Will only exit market if cToken is not enabled as a collateral asset as well
// If there is an existing borrow balance, will revert and market cannot be exited on Compound
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].borrowCTokens.removeStorage(address(cToken));
enabledAssets[_setToken].borrowAssets.removeStorage(address(_borrowAssets[i]));
}
emit BorrowAssetsUpdated(_setToken, false, _borrowAssets);
}
/**
* GOVERNANCE ONLY: Add or remove allowed SetToken to initialize this module. Only callable by governance.
*
* @param _setToken Instance of the SetToken
*/
function updateAllowedSetToken(ISetToken _setToken, bool _status) external onlyOwner {
allowedSetTokens[_setToken] = _status;
emit SetTokenStatusUpdated(_setToken, _status);
}
/**
* GOVERNANCE ONLY: Toggle whether any SetToken is allowed to initialize this module. Only callable by governance.
*
* @param _anySetAllowed Bool indicating whether allowedSetTokens is enabled
*/
function updateAnySetAllowed(bool _anySetAllowed) external onlyOwner {
anySetAllowed = _anySetAllowed;
emit AnySetAllowedUpdated(_anySetAllowed);
}
/**
* GOVERNANCE ONLY: Add Compound market to module with stored underlying to cToken mapping in case of market additions to Compound.
*
* IMPORTANT: Validations are skipped in order to get contract under bytecode limit
*
* @param _cToken Address of cToken to add
* @param _underlying Address of underlying token that maps to cToken
*/
function addCompoundMarket(ICErc20 _cToken, IERC20 _underlying) external onlyOwner {
require(address(underlyingToCToken[_underlying]) == address(0), "Already added");
underlyingToCToken[_underlying] = _cToken;
}
/**
* GOVERNANCE ONLY: Remove Compound market on stored underlying to cToken mapping in case of market removals
*
* IMPORTANT: Validations are skipped in order to get contract under bytecode limit
*
* @param _underlying Address of underlying token to remove
*/
function removeCompoundMarket(IERC20 _underlying) external onlyOwner {
require(address(underlyingToCToken[_underlying]) != address(0), "Not added");
delete underlyingToCToken[_underlying];
}
/**
* MODULE ONLY: Hook called prior to issuance to sync positions on SetToken. Only callable by valid module.
*
* @param _setToken Instance of the SetToken
*/
function moduleIssueHook(ISetToken _setToken, uint256 /* _setTokenQuantity */) external onlyModule(_setToken) {
sync(_setToken, false);
}
/**
* MODULE ONLY: Hook called prior to redemption to sync positions on SetToken. For redemption, always use current borrowed balance after interest accrual.
* Only callable by valid module.
*
* @param _setToken Instance of the SetToken
*/
function moduleRedeemHook(ISetToken _setToken, uint256 /* _setTokenQuantity */) external onlyModule(_setToken) {
sync(_setToken, true);
}
/**
* MODULE ONLY: Hook called prior to looping through each component on issuance. Invokes borrow in order for module to return debt to issuer. Only callable by valid module.
*
* @param _setToken Instance of the SetToken
* @param _setTokenQuantity Quantity of SetToken
* @param _component Address of component
*/
function componentIssueHook(ISetToken _setToken, uint256 _setTokenQuantity, IERC20 _component, bool /* _isEquity */) external onlyModule(_setToken) {
int256 componentDebt = _setToken.getExternalPositionRealUnit(address(_component), address(this));
require(componentDebt < 0, "Component must be negative");
uint256 notionalDebt = componentDebt.mul(-1).toUint256().preciseMul(_setTokenQuantity);
_borrow(_setToken, underlyingToCToken[_component], notionalDebt);
}
/**
* MODULE ONLY: Hook called prior to looping through each component on redemption. Invokes repay after issuance module transfers debt from issuer. Only callable by valid module.
*
* @param _setToken Instance of the SetToken
* @param _setTokenQuantity Quantity of SetToken
* @param _component Address of component
*/
function componentRedeemHook(ISetToken _setToken, uint256 _setTokenQuantity, IERC20 _component, bool /* _isEquity */) external onlyModule(_setToken) {
int256 componentDebt = _setToken.getExternalPositionRealUnit(address(_component), address(this));
require(componentDebt < 0, "Component must be negative");
uint256 notionalDebt = componentDebt.mul(-1).toUint256().preciseMulCeil(_setTokenQuantity);
_repayBorrow(_setToken, underlyingToCToken[_component], _component, notionalDebt);
}
/* ============ External Getter Functions ============ */
/**
* Get enabled assets for SetToken. Returns an array of enabled cTokens that are collateral assets and an
* array of underlying that are borrow assets.
*
* @return Collateral cToken assets that are enabled
* @return Underlying borrowed assets that are enabled.
*/
function getEnabledAssets(ISetToken _setToken) external view returns(address[] memory, address[] memory) {
return (
enabledAssets[_setToken].collateralCTokens,
enabledAssets[_setToken].borrowAssets
);
}
/* ============ Internal Functions ============ */
/**
* Mints the specified cToken from the underlying of the specified notional quantity. If cEther, the WETH must be
* unwrapped as it only accepts the underlying ETH.
*/
function _mintCToken(ISetToken _setToken, ICErc20 _cToken, IERC20 _underlyingToken, uint256 _mintNotional) internal {
if (_cToken == cEther) {
_setToken.invokeUnwrapWETH(address(weth), _mintNotional);
_setToken.invokeMintCEther(_cToken, _mintNotional);
} else {
_setToken.invokeApprove(address(_underlyingToken), address(_cToken), _mintNotional);
_setToken.invokeMintCToken(_cToken, _mintNotional);
}
}
/**
* Invoke redeem from SetToken. If cEther, then also wrap ETH into WETH.
*/
function _redeemUnderlying(ISetToken _setToken, ICErc20 _cToken, uint256 _redeemNotional) internal {
_setToken.invokeRedeemUnderlying(_cToken, _redeemNotional);
if (_cToken == cEther) {
_setToken.invokeWrapWETH(address(weth), _redeemNotional);
}
}
/**
* Invoke repay from SetToken. If cEther then unwrap WETH into ETH.
*/
function _repayBorrow(ISetToken _setToken, ICErc20 _cToken, IERC20 _underlyingToken, uint256 _repayNotional) internal {
if (_cToken == cEther) {
_setToken.invokeUnwrapWETH(address(weth), _repayNotional);
_setToken.invokeRepayBorrowCEther(_cToken, _repayNotional);
} else {
// Approve to cToken
_setToken.invokeApprove(address(_underlyingToken), address(_cToken), _repayNotional);
_setToken.invokeRepayBorrowCToken(_cToken, _repayNotional);
}
}
/**
* Invoke the SetToken to interact with the specified cToken to borrow the cToken's underlying of the specified borrowQuantity.
*/
function _borrow(ISetToken _setToken, ICErc20 _cToken, uint256 _notionalBorrowQuantity) internal {
_setToken.invokeBorrow(_cToken, _notionalBorrowQuantity);
if (_cToken == cEther) {
_setToken.invokeWrapWETH(address(weth), _notionalBorrowQuantity);
}
}
/**
* Invokes approvals, gets trade call data from exchange adapter and invokes trade from SetToken
*
* @return receiveTokenQuantity The quantity of tokens received post-trade
*/
function _executeTrade(
ActionInfo memory _actionInfo,
IERC20 _sendToken,
IERC20 _receiveToken,
bytes memory _data
)
internal
returns (uint256)
{
ISetToken setToken = _actionInfo.setToken;
uint256 notionalSendQuantity = _actionInfo.notionalSendQuantity;
setToken.invokeApprove(
address(_sendToken),
_actionInfo.exchangeAdapter.getSpender(),
notionalSendQuantity
);
(
address targetExchange,
uint256 callValue,
bytes memory methodData
) = _actionInfo.exchangeAdapter.getTradeCalldata(
address(_sendToken),
address(_receiveToken),
address(setToken),
notionalSendQuantity,
_actionInfo.minNotionalReceiveQuantity,
_data
);
setToken.invoke(targetExchange, callValue, methodData);
uint256 receiveTokenQuantity = _receiveToken.balanceOf(address(setToken)).sub(_actionInfo.preTradeReceiveTokenBalance);
require(
receiveTokenQuantity >= _actionInfo.minNotionalReceiveQuantity,
"Slippage too high"
);
return receiveTokenQuantity;
}
/**
* Calculates protocol fee on module and pays protocol fee from SetToken
*/
function _accrueProtocolFee(ISetToken _setToken, IERC20 _receiveToken, uint256 _exchangedQuantity) internal returns(uint256) {
uint256 protocolFeeTotal = getModuleFee(PROTOCOL_TRADE_FEE_INDEX, _exchangedQuantity);
payProtocolFeeFromSetToken(_setToken, address(_receiveToken), protocolFeeTotal);
return protocolFeeTotal;
}
/**
* Updates the collateral (cToken held) and borrow position (underlying owed on Compound)
*/
function _updateLeverPositions(ActionInfo memory actionInfo, IERC20 _borrowAsset) internal {
_updateCollateralPosition(
actionInfo.setToken,
actionInfo.collateralCTokenAsset,
_getCollateralPosition(
actionInfo.setToken,
actionInfo.collateralCTokenAsset,
actionInfo.setTotalSupply
)
);
_updateBorrowPosition(
actionInfo.setToken,
_borrowAsset,
_getBorrowPosition(
actionInfo.setToken,
actionInfo.borrowCTokenAsset,
actionInfo.setTotalSupply,
false // Do not accrue interest
)
);
}
function _updateCollateralPosition(ISetToken _setToken, ICErc20 _cToken, uint256 _newPositionUnit) internal {
_setToken.editDefaultPosition(address(_cToken), _newPositionUnit);
}
function _updateBorrowPosition(ISetToken _setToken, IERC20 _underlyingToken, int256 _newPositionUnit) internal {
_setToken.editExternalPosition(address(_underlyingToken), address(this), _newPositionUnit, "");
}
/**
* Construct the ActionInfo struct for lever and delever
*/
function _createAndValidateActionInfo(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _sendQuantityUnits,
uint256 _minReceiveQuantityUnits,
string memory _tradeAdapterName,
bool _isLever
)
internal
view
returns(ActionInfo memory)
{
uint256 totalSupply = _setToken.totalSupply();
return _createAndValidateActionInfoNotional(
_setToken,
_sendToken,
_receiveToken,
_sendQuantityUnits.preciseMul(totalSupply),
_minReceiveQuantityUnits.preciseMul(totalSupply),
_tradeAdapterName,
_isLever
);
}
/**
* Construct the ActionInfo struct for lever and delever accepting notional units
*/
function _createAndValidateActionInfoNotional(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _notionalSendQuantity,
uint256 _minNotionalReceiveQuantity,
string memory _tradeAdapterName,
bool _isLever
)
internal
view
returns(ActionInfo memory)
{
uint256 totalSupply = _setToken.totalSupply();
ActionInfo memory actionInfo = ActionInfo ({
exchangeAdapter: IExchangeAdapter(getAndValidateAdapter(_tradeAdapterName)),
setToken: _setToken,
collateralCTokenAsset: _isLever ? underlyingToCToken[_receiveToken] : underlyingToCToken[_sendToken],
borrowCTokenAsset: _isLever ? underlyingToCToken[_sendToken] : underlyingToCToken[_receiveToken],
setTotalSupply: totalSupply,
notionalSendQuantity: _notionalSendQuantity,
minNotionalReceiveQuantity: _minNotionalReceiveQuantity,
preTradeReceiveTokenBalance: IERC20(_receiveToken).balanceOf(address(_setToken))
});
_validateCommon(actionInfo);
return actionInfo;
}
function _validateCommon(ActionInfo memory _actionInfo) internal view {
require(collateralCTokenEnabled[_actionInfo.setToken][_actionInfo.collateralCTokenAsset], "Collateral not enabled");
require(borrowCTokenEnabled[_actionInfo.setToken][_actionInfo.borrowCTokenAsset], "Borrow not enabled");
require(_actionInfo.collateralCTokenAsset != _actionInfo.borrowCTokenAsset, "Must be different");
require(_actionInfo.notionalSendQuantity > 0, "Quantity is 0");
}
function _getCollateralPosition(ISetToken _setToken, ICErc20 _cToken, uint256 _setTotalSupply) internal view returns (uint256) {
uint256 collateralNotionalBalance = _cToken.balanceOf(address(_setToken));
return collateralNotionalBalance.preciseDiv(_setTotalSupply);
}
/**
* Get borrow position. If should accrue interest is true, then accrue interest on Compound and use current borrow balance, else use the stored value to save gas.
* Use the current value for debt redemption, when we need to calculate the exact units of debt that needs to be repaid.
*/
function _getBorrowPosition(ISetToken _setToken, ICErc20 _cToken, uint256 _setTotalSupply, bool _shouldAccrueInterest) internal returns (int256) {
uint256 borrowNotionalBalance = _shouldAccrueInterest ? _cToken.borrowBalanceCurrent(address(_setToken)) : _cToken.borrowBalanceStored(address(_setToken));
// Round negative away from 0
int256 borrowPositionUnit = borrowNotionalBalance.preciseDivCeil(_setTotalSupply).toInt256().mul(-1);
return borrowPositionUnit;
}
}
|
* @title CompoundLeverageModule @author Set Protocol Smart contract that enables leverage trading using Compound as the lending protocol. This module is paired with a debt issuance module that will call functions on this module to keep interest accrual and liquidation state updated. This does not allow borrowing of assets from Compound alone. Each asset is leveraged when using this module. Note: Do not use this module in conjunction with other debt modules that allow Compound debt positions as it could lead to double counting of debt when borrowed assets are the same./
|
contract CompoundLeverageModule is ModuleBase, ReentrancyGuard, Ownable {
using Compound for ISetToken;
Copyright 2021 Set Labs Inc.
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import { Compound } from "../integration/lib/Compound.sol";
import { ICErc20 } from "../../interfaces/external/ICErc20.sol";
import { IComptroller } from "../../interfaces/external/IComptroller.sol";
import { IController } from "../../interfaces/IController.sol";
import { IDebtIssuanceModule } from "../../interfaces/IDebtIssuanceModule.sol";
import { IExchangeAdapter } from "../../interfaces/IExchangeAdapter.sol";
import { ISetToken } from "../../interfaces/ISetToken.sol";
import { ModuleBase } from "../lib/ModuleBase.sol";
struct EnabledAssets {
}
struct ActionInfo {
}
event LeverageIncreased(
ISetToken indexed _setToken,
IERC20 indexed _borrowAsset,
IERC20 indexed _collateralAsset,
IExchangeAdapter _exchangeAdapter,
uint256 _totalBorrowAmount,
uint256 _totalReceiveAmount,
uint256 _protocolFee
);
event LeverageDecreased(
ISetToken indexed _setToken,
IERC20 indexed _collateralAsset,
IERC20 indexed _repayAsset,
IExchangeAdapter _exchangeAdapter,
uint256 _totalRedeemAmount,
uint256 _totalRepayAmount,
uint256 _protocolFee
);
event CollateralAssetsUpdated(
ISetToken indexed _setToken,
bool indexed _added,
IERC20[] _assets
);
event BorrowAssetsUpdated(
ISetToken indexed _setToken,
bool indexed _added,
IERC20[] _assets
);
event SetTokenStatusUpdated(
ISetToken indexed _setToken,
bool indexed _added
);
event AnySetAllowedUpdated(
bool indexed _anySetAllowed
);
IController _controller,
IERC20 _compToken,
IComptroller _comptroller,
ICErc20 _cEther,
IERC20 _weth
)
public
ModuleBase(_controller)
string constant internal DEFAULT_ISSUANCE_MODULE_NAME = "DefaultIssuanceModule";
uint256 constant internal PROTOCOL_TRADE_FEE_INDEX = 0;
mapping(IERC20 => ICErc20) public underlyingToCToken;
IERC20 internal weth;
ICErc20 internal cEther;
IComptroller internal comptroller;
IERC20 internal compToken;
mapping(ISetToken => mapping(ICErc20 => bool)) public collateralCTokenEnabled;
mapping(ISetToken => mapping(ICErc20 => bool)) public borrowCTokenEnabled;
mapping(ISetToken => EnabledAssets) internal enabledAssets;
mapping(ISetToken => bool) public allowedSetTokens;
bool public anySetAllowed;
constructor(
{
compToken = _compToken;
comptroller = _comptroller;
cEther = _cEther;
weth = _weth;
ICErc20[] memory cTokens = comptroller.getAllMarkets();
for(uint256 i = 0; i < cTokens.length; i++) {
ICErc20 cToken = cTokens[i];
underlyingToCToken[
cToken == _cEther ? _weth : IERC20(cTokens[i].underlying())
] = cToken;
}
}
{
compToken = _compToken;
comptroller = _comptroller;
cEther = _cEther;
weth = _weth;
ICErc20[] memory cTokens = comptroller.getAllMarkets();
for(uint256 i = 0; i < cTokens.length; i++) {
ICErc20 cToken = cTokens[i];
underlyingToCToken[
cToken == _cEther ? _weth : IERC20(cTokens[i].underlying())
] = cToken;
}
}
function lever(
ISetToken _setToken,
IERC20 _borrowAsset,
IERC20 _collateralAsset,
uint256 _borrowQuantity,
uint256 _minReceiveQuantity,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
ActionInfo memory leverInfo = _createAndValidateActionInfo(
_setToken,
_borrowAsset,
_collateralAsset,
_borrowQuantity,
_minReceiveQuantity,
_tradeAdapterName,
true
);
_borrow(leverInfo.setToken, leverInfo.borrowCTokenAsset, leverInfo.notionalSendQuantity);
uint256 postTradeReceiveQuantity = _executeTrade(leverInfo, _borrowAsset, _collateralAsset, _tradeData);
uint256 protocolFee = _accrueProtocolFee(_setToken, _collateralAsset, postTradeReceiveQuantity);
uint256 postTradeCollateralQuantity = postTradeReceiveQuantity.sub(protocolFee);
_mintCToken(leverInfo.setToken, leverInfo.collateralCTokenAsset, _collateralAsset, postTradeCollateralQuantity);
_updateLeverPositions(leverInfo, _borrowAsset);
emit LeverageIncreased(
_setToken,
_borrowAsset,
_collateralAsset,
leverInfo.exchangeAdapter,
leverInfo.notionalSendQuantity,
postTradeCollateralQuantity,
protocolFee
);
}
function delever(
ISetToken _setToken,
IERC20 _collateralAsset,
IERC20 _repayAsset,
uint256 _redeemQuantity,
uint256 _minRepayQuantity,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
ActionInfo memory deleverInfo = _createAndValidateActionInfo(
_setToken,
_collateralAsset,
_repayAsset,
_redeemQuantity,
_minRepayQuantity,
_tradeAdapterName,
false
);
_redeemUnderlying(deleverInfo.setToken, deleverInfo.collateralCTokenAsset, deleverInfo.notionalSendQuantity);
uint256 postTradeReceiveQuantity = _executeTrade(deleverInfo, _collateralAsset, _repayAsset, _tradeData);
uint256 protocolFee = _accrueProtocolFee(_setToken, _repayAsset, postTradeReceiveQuantity);
uint256 repayQuantity = postTradeReceiveQuantity.sub(protocolFee);
_repayBorrow(deleverInfo.setToken, deleverInfo.borrowCTokenAsset, _repayAsset, repayQuantity);
_updateLeverPositions(deleverInfo, _repayAsset);
emit LeverageDecreased(
_setToken,
_collateralAsset,
_repayAsset,
deleverInfo.exchangeAdapter,
deleverInfo.notionalSendQuantity,
repayQuantity,
protocolFee
);
}
function deleverToZeroBorrowBalance(
ISetToken _setToken,
IERC20 _collateralAsset,
IERC20 _repayAsset,
uint256 _redeemQuantity,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
uint256 notionalRedeemQuantity = _redeemQuantity.preciseMul(_setToken.totalSupply());
require(borrowCTokenEnabled[_setToken][underlyingToCToken[_repayAsset]], "Borrow not enabled");
uint256 notionalRepayQuantity = underlyingToCToken[_repayAsset].borrowBalanceCurrent(address(_setToken));
ActionInfo memory deleverInfo = _createAndValidateActionInfoNotional(
_setToken,
_collateralAsset,
_repayAsset,
notionalRedeemQuantity,
notionalRepayQuantity,
_tradeAdapterName,
false
);
_redeemUnderlying(deleverInfo.setToken, deleverInfo.collateralCTokenAsset, deleverInfo.notionalSendQuantity);
_executeTrade(deleverInfo, _collateralAsset, _repayAsset, _tradeData);
_repayBorrow(deleverInfo.setToken, deleverInfo.borrowCTokenAsset, _repayAsset, notionalRepayQuantity);
_setToken.calculateAndEditDefaultPosition(
address(_repayAsset),
deleverInfo.setTotalSupply,
deleverInfo.preTradeReceiveTokenBalance
);
_updateLeverPositions(deleverInfo, _repayAsset);
emit LeverageDecreased(
_setToken,
_collateralAsset,
_repayAsset,
deleverInfo.exchangeAdapter,
deleverInfo.notionalSendQuantity,
notionalRepayQuantity,
);
}
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
if (setTotalSupply > 0) {
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
if (setTotalSupply > 0) {
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
if (setTotalSupply > 0) {
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
if (setTotalSupply > 0) {
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
address[] memory borrowCTokens = enabledAssets[_setToken].borrowCTokens;
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
if (setTotalSupply > 0) {
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
function sync(ISetToken _setToken, bool _shouldAccrueInterest) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
if (setTotalSupply > 0) {
address[] memory collateralCTokens = enabledAssets[_setToken].collateralCTokens;
for(uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 collateralCToken = ICErc20(collateralCTokens[i]);
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(collateralCToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, collateralCToken, setTotalSupply);
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, collateralCToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 borrowCToken = ICErc20(borrowCTokens[i]);
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(
_setToken,
borrowCToken,
setTotalSupply,
_shouldAccrueInterest
);
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
function initialize(
ISetToken _setToken,
IERC20[] memory _collateralAssets,
IERC20[] memory _borrowAssets
)
external
onlySetManager(_setToken, msg.sender)
onlyValidAndPendingSet(_setToken)
{
if (!anySetAllowed) {
require(allowedSetTokens[_setToken], "Not allowed SetToken");
}
for(uint256 i = 0; i < modules.length; i++) {
}
addBorrowAssets(_setToken, _borrowAssets);
}
function initialize(
ISetToken _setToken,
IERC20[] memory _collateralAssets,
IERC20[] memory _borrowAssets
)
external
onlySetManager(_setToken, msg.sender)
onlyValidAndPendingSet(_setToken)
{
if (!anySetAllowed) {
require(allowedSetTokens[_setToken], "Not allowed SetToken");
}
for(uint256 i = 0; i < modules.length; i++) {
}
addBorrowAssets(_setToken, _borrowAssets);
}
_setToken.initializeModule();
require(_setToken.isInitializedModule(getAndValidateAdapter(DEFAULT_ISSUANCE_MODULE_NAME)), "Issuance not initialized");
address[] memory modules = _setToken.getModules();
function initialize(
ISetToken _setToken,
IERC20[] memory _collateralAssets,
IERC20[] memory _borrowAssets
)
external
onlySetManager(_setToken, msg.sender)
onlyValidAndPendingSet(_setToken)
{
if (!anySetAllowed) {
require(allowedSetTokens[_setToken], "Not allowed SetToken");
}
for(uint256 i = 0; i < modules.length; i++) {
}
addBorrowAssets(_setToken, _borrowAssets);
}
try IDebtIssuanceModule(modules[i]).registerToIssuanceModule(_setToken) {} catch {}
addCollateralAssets(_setToken, _collateralAssets);
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
sync(setToken, true);
address[] memory borrowCTokens = enabledAssets[setToken].borrowCTokens;
for (uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 cToken = ICErc20(borrowCTokens[i]);
if(!collateralCTokenEnabled[setToken][cToken]) {
setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[setToken][cToken];
}
address[] memory collateralCTokens = enabledAssets[setToken].collateralCTokens;
for (uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 cToken = ICErc20(collateralCTokens[i]);
setToken.invokeExitMarket(cToken, comptroller);
delete collateralCTokenEnabled[setToken][cToken];
}
delete enabledAssets[setToken];
for(uint256 i = 0; i < modules.length; i++) {
}
}
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
sync(setToken, true);
address[] memory borrowCTokens = enabledAssets[setToken].borrowCTokens;
for (uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 cToken = ICErc20(borrowCTokens[i]);
if(!collateralCTokenEnabled[setToken][cToken]) {
setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[setToken][cToken];
}
address[] memory collateralCTokens = enabledAssets[setToken].collateralCTokens;
for (uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 cToken = ICErc20(collateralCTokens[i]);
setToken.invokeExitMarket(cToken, comptroller);
delete collateralCTokenEnabled[setToken][cToken];
}
delete enabledAssets[setToken];
for(uint256 i = 0; i < modules.length; i++) {
}
}
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
sync(setToken, true);
address[] memory borrowCTokens = enabledAssets[setToken].borrowCTokens;
for (uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 cToken = ICErc20(borrowCTokens[i]);
if(!collateralCTokenEnabled[setToken][cToken]) {
setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[setToken][cToken];
}
address[] memory collateralCTokens = enabledAssets[setToken].collateralCTokens;
for (uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 cToken = ICErc20(collateralCTokens[i]);
setToken.invokeExitMarket(cToken, comptroller);
delete collateralCTokenEnabled[setToken][cToken];
}
delete enabledAssets[setToken];
for(uint256 i = 0; i < modules.length; i++) {
}
}
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
sync(setToken, true);
address[] memory borrowCTokens = enabledAssets[setToken].borrowCTokens;
for (uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 cToken = ICErc20(borrowCTokens[i]);
if(!collateralCTokenEnabled[setToken][cToken]) {
setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[setToken][cToken];
}
address[] memory collateralCTokens = enabledAssets[setToken].collateralCTokens;
for (uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 cToken = ICErc20(collateralCTokens[i]);
setToken.invokeExitMarket(cToken, comptroller);
delete collateralCTokenEnabled[setToken][cToken];
}
delete enabledAssets[setToken];
for(uint256 i = 0; i < modules.length; i++) {
}
}
address[] memory modules = setToken.getModules();
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
sync(setToken, true);
address[] memory borrowCTokens = enabledAssets[setToken].borrowCTokens;
for (uint256 i = 0; i < borrowCTokens.length; i++) {
ICErc20 cToken = ICErc20(borrowCTokens[i]);
if(!collateralCTokenEnabled[setToken][cToken]) {
setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[setToken][cToken];
}
address[] memory collateralCTokens = enabledAssets[setToken].collateralCTokens;
for (uint256 i = 0; i < collateralCTokens.length; i++) {
ICErc20 cToken = ICErc20(collateralCTokens[i]);
setToken.invokeExitMarket(cToken, comptroller);
delete collateralCTokenEnabled[setToken][cToken];
}
delete enabledAssets[setToken];
for(uint256 i = 0; i < modules.length; i++) {
}
}
try IDebtIssuanceModule(modules[i]).unregisterFromIssuanceModule(setToken) {} catch {}
function registerToModule(ISetToken _setToken, IDebtIssuanceModule _debtIssuanceModule) external onlyManagerAndValidSet(_setToken) {
require(_setToken.isInitializedModule(address(_debtIssuanceModule)), "Issuance not initialized");
_debtIssuanceModule.registerToIssuanceModule(_setToken);
}
function addCollateralAssets(ISetToken _setToken, IERC20[] memory _newCollateralAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newCollateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_newCollateralAssets[i]];
require(address(cToken) != address(0), "cToken must exist");
require(!collateralCTokenEnabled[_setToken][cToken], "Collateral enabled");
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
collateralCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].collateralCTokens.push(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, true, _newCollateralAssets);
}
function addCollateralAssets(ISetToken _setToken, IERC20[] memory _newCollateralAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newCollateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_newCollateralAssets[i]];
require(address(cToken) != address(0), "cToken must exist");
require(!collateralCTokenEnabled[_setToken][cToken], "Collateral enabled");
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
collateralCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].collateralCTokens.push(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, true, _newCollateralAssets);
}
function addCollateralAssets(ISetToken _setToken, IERC20[] memory _newCollateralAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newCollateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_newCollateralAssets[i]];
require(address(cToken) != address(0), "cToken must exist");
require(!collateralCTokenEnabled[_setToken][cToken], "Collateral enabled");
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
collateralCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].collateralCTokens.push(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, true, _newCollateralAssets);
}
function removeCollateralAssets(ISetToken _setToken, IERC20[] memory _collateralAssets) external onlyManagerAndValidSet(_setToken) {
sync(_setToken, true);
for(uint256 i = 0; i < _collateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_collateralAssets[i]];
require(collateralCTokenEnabled[_setToken][cToken], "Collateral not enabled");
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete collateralCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].collateralCTokens.removeStorage(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, false, _collateralAssets);
}
function removeCollateralAssets(ISetToken _setToken, IERC20[] memory _collateralAssets) external onlyManagerAndValidSet(_setToken) {
sync(_setToken, true);
for(uint256 i = 0; i < _collateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_collateralAssets[i]];
require(collateralCTokenEnabled[_setToken][cToken], "Collateral not enabled");
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete collateralCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].collateralCTokens.removeStorage(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, false, _collateralAssets);
}
function removeCollateralAssets(ISetToken _setToken, IERC20[] memory _collateralAssets) external onlyManagerAndValidSet(_setToken) {
sync(_setToken, true);
for(uint256 i = 0; i < _collateralAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_collateralAssets[i]];
require(collateralCTokenEnabled[_setToken][cToken], "Collateral not enabled");
if (!borrowCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete collateralCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].collateralCTokens.removeStorage(address(cToken));
}
emit CollateralAssetsUpdated(_setToken, false, _collateralAssets);
}
function addBorrowAssets(ISetToken _setToken, IERC20[] memory _newBorrowAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newBorrowAssets.length; i++) {
IERC20 newBorrowAsset = _newBorrowAssets[i];
ICErc20 cToken = underlyingToCToken[newBorrowAsset];
require(address(cToken) != address(0), "cToken must exist");
require(!borrowCTokenEnabled[_setToken][cToken], "Borrow enabled");
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
borrowCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].borrowCTokens.push(address(cToken));
enabledAssets[_setToken].borrowAssets.push(address(newBorrowAsset));
}
emit BorrowAssetsUpdated(_setToken, true, _newBorrowAssets);
}
function addBorrowAssets(ISetToken _setToken, IERC20[] memory _newBorrowAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newBorrowAssets.length; i++) {
IERC20 newBorrowAsset = _newBorrowAssets[i];
ICErc20 cToken = underlyingToCToken[newBorrowAsset];
require(address(cToken) != address(0), "cToken must exist");
require(!borrowCTokenEnabled[_setToken][cToken], "Borrow enabled");
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
borrowCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].borrowCTokens.push(address(cToken));
enabledAssets[_setToken].borrowAssets.push(address(newBorrowAsset));
}
emit BorrowAssetsUpdated(_setToken, true, _newBorrowAssets);
}
function addBorrowAssets(ISetToken _setToken, IERC20[] memory _newBorrowAssets) public onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _newBorrowAssets.length; i++) {
IERC20 newBorrowAsset = _newBorrowAssets[i];
ICErc20 cToken = underlyingToCToken[newBorrowAsset];
require(address(cToken) != address(0), "cToken must exist");
require(!borrowCTokenEnabled[_setToken][cToken], "Borrow enabled");
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeEnterMarkets(cToken, comptroller);
}
borrowCTokenEnabled[_setToken][cToken] = true;
enabledAssets[_setToken].borrowCTokens.push(address(cToken));
enabledAssets[_setToken].borrowAssets.push(address(newBorrowAsset));
}
emit BorrowAssetsUpdated(_setToken, true, _newBorrowAssets);
}
function removeBorrowAssets(ISetToken _setToken, IERC20[] memory _borrowAssets) external onlyManagerAndValidSet(_setToken) {
sync(_setToken, true);
for(uint256 i = 0; i < _borrowAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_borrowAssets[i]];
require(borrowCTokenEnabled[_setToken][cToken], "Borrow not enabled");
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].borrowCTokens.removeStorage(address(cToken));
enabledAssets[_setToken].borrowAssets.removeStorage(address(_borrowAssets[i]));
}
emit BorrowAssetsUpdated(_setToken, false, _borrowAssets);
}
function removeBorrowAssets(ISetToken _setToken, IERC20[] memory _borrowAssets) external onlyManagerAndValidSet(_setToken) {
sync(_setToken, true);
for(uint256 i = 0; i < _borrowAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_borrowAssets[i]];
require(borrowCTokenEnabled[_setToken][cToken], "Borrow not enabled");
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].borrowCTokens.removeStorage(address(cToken));
enabledAssets[_setToken].borrowAssets.removeStorage(address(_borrowAssets[i]));
}
emit BorrowAssetsUpdated(_setToken, false, _borrowAssets);
}
function removeBorrowAssets(ISetToken _setToken, IERC20[] memory _borrowAssets) external onlyManagerAndValidSet(_setToken) {
sync(_setToken, true);
for(uint256 i = 0; i < _borrowAssets.length; i++) {
ICErc20 cToken = underlyingToCToken[_borrowAssets[i]];
require(borrowCTokenEnabled[_setToken][cToken], "Borrow not enabled");
if (!collateralCTokenEnabled[_setToken][cToken]) {
_setToken.invokeExitMarket(cToken, comptroller);
}
delete borrowCTokenEnabled[_setToken][cToken];
enabledAssets[_setToken].borrowCTokens.removeStorage(address(cToken));
enabledAssets[_setToken].borrowAssets.removeStorage(address(_borrowAssets[i]));
}
emit BorrowAssetsUpdated(_setToken, false, _borrowAssets);
}
function updateAllowedSetToken(ISetToken _setToken, bool _status) external onlyOwner {
allowedSetTokens[_setToken] = _status;
emit SetTokenStatusUpdated(_setToken, _status);
}
function updateAnySetAllowed(bool _anySetAllowed) external onlyOwner {
anySetAllowed = _anySetAllowed;
emit AnySetAllowedUpdated(_anySetAllowed);
}
function addCompoundMarket(ICErc20 _cToken, IERC20 _underlying) external onlyOwner {
require(address(underlyingToCToken[_underlying]) == address(0), "Already added");
underlyingToCToken[_underlying] = _cToken;
}
function removeCompoundMarket(IERC20 _underlying) external onlyOwner {
require(address(underlyingToCToken[_underlying]) != address(0), "Not added");
delete underlyingToCToken[_underlying];
}
function moduleIssueHook(ISetToken _setToken, uint256 /* _setTokenQuantity */) external onlyModule(_setToken) {
sync(_setToken, false);
}
function moduleRedeemHook(ISetToken _setToken, uint256 /* _setTokenQuantity */) external onlyModule(_setToken) {
sync(_setToken, true);
}
function componentIssueHook(ISetToken _setToken, uint256 _setTokenQuantity, IERC20 _component, bool /* _isEquity */) external onlyModule(_setToken) {
int256 componentDebt = _setToken.getExternalPositionRealUnit(address(_component), address(this));
require(componentDebt < 0, "Component must be negative");
uint256 notionalDebt = componentDebt.mul(-1).toUint256().preciseMul(_setTokenQuantity);
_borrow(_setToken, underlyingToCToken[_component], notionalDebt);
}
function componentRedeemHook(ISetToken _setToken, uint256 _setTokenQuantity, IERC20 _component, bool /* _isEquity */) external onlyModule(_setToken) {
int256 componentDebt = _setToken.getExternalPositionRealUnit(address(_component), address(this));
require(componentDebt < 0, "Component must be negative");
uint256 notionalDebt = componentDebt.mul(-1).toUint256().preciseMulCeil(_setTokenQuantity);
_repayBorrow(_setToken, underlyingToCToken[_component], _component, notionalDebt);
}
function getEnabledAssets(ISetToken _setToken) external view returns(address[] memory, address[] memory) {
return (
enabledAssets[_setToken].collateralCTokens,
enabledAssets[_setToken].borrowAssets
);
}
function _mintCToken(ISetToken _setToken, ICErc20 _cToken, IERC20 _underlyingToken, uint256 _mintNotional) internal {
if (_cToken == cEther) {
_setToken.invokeUnwrapWETH(address(weth), _mintNotional);
_setToken.invokeMintCEther(_cToken, _mintNotional);
_setToken.invokeApprove(address(_underlyingToken), address(_cToken), _mintNotional);
_setToken.invokeMintCToken(_cToken, _mintNotional);
}
}
function _mintCToken(ISetToken _setToken, ICErc20 _cToken, IERC20 _underlyingToken, uint256 _mintNotional) internal {
if (_cToken == cEther) {
_setToken.invokeUnwrapWETH(address(weth), _mintNotional);
_setToken.invokeMintCEther(_cToken, _mintNotional);
_setToken.invokeApprove(address(_underlyingToken), address(_cToken), _mintNotional);
_setToken.invokeMintCToken(_cToken, _mintNotional);
}
}
} else {
function _redeemUnderlying(ISetToken _setToken, ICErc20 _cToken, uint256 _redeemNotional) internal {
_setToken.invokeRedeemUnderlying(_cToken, _redeemNotional);
if (_cToken == cEther) {
_setToken.invokeWrapWETH(address(weth), _redeemNotional);
}
}
function _redeemUnderlying(ISetToken _setToken, ICErc20 _cToken, uint256 _redeemNotional) internal {
_setToken.invokeRedeemUnderlying(_cToken, _redeemNotional);
if (_cToken == cEther) {
_setToken.invokeWrapWETH(address(weth), _redeemNotional);
}
}
function _repayBorrow(ISetToken _setToken, ICErc20 _cToken, IERC20 _underlyingToken, uint256 _repayNotional) internal {
if (_cToken == cEther) {
_setToken.invokeUnwrapWETH(address(weth), _repayNotional);
_setToken.invokeRepayBorrowCEther(_cToken, _repayNotional);
_setToken.invokeApprove(address(_underlyingToken), address(_cToken), _repayNotional);
_setToken.invokeRepayBorrowCToken(_cToken, _repayNotional);
}
}
function _repayBorrow(ISetToken _setToken, ICErc20 _cToken, IERC20 _underlyingToken, uint256 _repayNotional) internal {
if (_cToken == cEther) {
_setToken.invokeUnwrapWETH(address(weth), _repayNotional);
_setToken.invokeRepayBorrowCEther(_cToken, _repayNotional);
_setToken.invokeApprove(address(_underlyingToken), address(_cToken), _repayNotional);
_setToken.invokeRepayBorrowCToken(_cToken, _repayNotional);
}
}
} else {
function _borrow(ISetToken _setToken, ICErc20 _cToken, uint256 _notionalBorrowQuantity) internal {
_setToken.invokeBorrow(_cToken, _notionalBorrowQuantity);
if (_cToken == cEther) {
_setToken.invokeWrapWETH(address(weth), _notionalBorrowQuantity);
}
}
function _borrow(ISetToken _setToken, ICErc20 _cToken, uint256 _notionalBorrowQuantity) internal {
_setToken.invokeBorrow(_cToken, _notionalBorrowQuantity);
if (_cToken == cEther) {
_setToken.invokeWrapWETH(address(weth), _notionalBorrowQuantity);
}
}
function _executeTrade(
ActionInfo memory _actionInfo,
IERC20 _sendToken,
IERC20 _receiveToken,
bytes memory _data
)
internal
returns (uint256)
{
ISetToken setToken = _actionInfo.setToken;
uint256 notionalSendQuantity = _actionInfo.notionalSendQuantity;
setToken.invokeApprove(
address(_sendToken),
_actionInfo.exchangeAdapter.getSpender(),
notionalSendQuantity
);
(
address targetExchange,
uint256 callValue,
bytes memory methodData
) = _actionInfo.exchangeAdapter.getTradeCalldata(
address(_sendToken),
address(_receiveToken),
address(setToken),
notionalSendQuantity,
_actionInfo.minNotionalReceiveQuantity,
_data
);
setToken.invoke(targetExchange, callValue, methodData);
uint256 receiveTokenQuantity = _receiveToken.balanceOf(address(setToken)).sub(_actionInfo.preTradeReceiveTokenBalance);
require(
receiveTokenQuantity >= _actionInfo.minNotionalReceiveQuantity,
"Slippage too high"
);
return receiveTokenQuantity;
}
function _accrueProtocolFee(ISetToken _setToken, IERC20 _receiveToken, uint256 _exchangedQuantity) internal returns(uint256) {
uint256 protocolFeeTotal = getModuleFee(PROTOCOL_TRADE_FEE_INDEX, _exchangedQuantity);
payProtocolFeeFromSetToken(_setToken, address(_receiveToken), protocolFeeTotal);
return protocolFeeTotal;
}
function _updateLeverPositions(ActionInfo memory actionInfo, IERC20 _borrowAsset) internal {
_updateCollateralPosition(
actionInfo.setToken,
actionInfo.collateralCTokenAsset,
_getCollateralPosition(
actionInfo.setToken,
actionInfo.collateralCTokenAsset,
actionInfo.setTotalSupply
)
);
_updateBorrowPosition(
actionInfo.setToken,
_borrowAsset,
_getBorrowPosition(
actionInfo.setToken,
actionInfo.borrowCTokenAsset,
actionInfo.setTotalSupply,
)
);
}
function _updateCollateralPosition(ISetToken _setToken, ICErc20 _cToken, uint256 _newPositionUnit) internal {
_setToken.editDefaultPosition(address(_cToken), _newPositionUnit);
}
function _updateBorrowPosition(ISetToken _setToken, IERC20 _underlyingToken, int256 _newPositionUnit) internal {
_setToken.editExternalPosition(address(_underlyingToken), address(this), _newPositionUnit, "");
}
function _createAndValidateActionInfo(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _sendQuantityUnits,
uint256 _minReceiveQuantityUnits,
string memory _tradeAdapterName,
bool _isLever
)
internal
view
returns(ActionInfo memory)
{
uint256 totalSupply = _setToken.totalSupply();
return _createAndValidateActionInfoNotional(
_setToken,
_sendToken,
_receiveToken,
_sendQuantityUnits.preciseMul(totalSupply),
_minReceiveQuantityUnits.preciseMul(totalSupply),
_tradeAdapterName,
_isLever
);
}
function _createAndValidateActionInfoNotional(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _notionalSendQuantity,
uint256 _minNotionalReceiveQuantity,
string memory _tradeAdapterName,
bool _isLever
)
internal
view
returns(ActionInfo memory)
{
uint256 totalSupply = _setToken.totalSupply();
ActionInfo memory actionInfo = ActionInfo ({
exchangeAdapter: IExchangeAdapter(getAndValidateAdapter(_tradeAdapterName)),
setToken: _setToken,
collateralCTokenAsset: _isLever ? underlyingToCToken[_receiveToken] : underlyingToCToken[_sendToken],
borrowCTokenAsset: _isLever ? underlyingToCToken[_sendToken] : underlyingToCToken[_receiveToken],
setTotalSupply: totalSupply,
notionalSendQuantity: _notionalSendQuantity,
minNotionalReceiveQuantity: _minNotionalReceiveQuantity,
preTradeReceiveTokenBalance: IERC20(_receiveToken).balanceOf(address(_setToken))
});
_validateCommon(actionInfo);
return actionInfo;
}
function _createAndValidateActionInfoNotional(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _notionalSendQuantity,
uint256 _minNotionalReceiveQuantity,
string memory _tradeAdapterName,
bool _isLever
)
internal
view
returns(ActionInfo memory)
{
uint256 totalSupply = _setToken.totalSupply();
ActionInfo memory actionInfo = ActionInfo ({
exchangeAdapter: IExchangeAdapter(getAndValidateAdapter(_tradeAdapterName)),
setToken: _setToken,
collateralCTokenAsset: _isLever ? underlyingToCToken[_receiveToken] : underlyingToCToken[_sendToken],
borrowCTokenAsset: _isLever ? underlyingToCToken[_sendToken] : underlyingToCToken[_receiveToken],
setTotalSupply: totalSupply,
notionalSendQuantity: _notionalSendQuantity,
minNotionalReceiveQuantity: _minNotionalReceiveQuantity,
preTradeReceiveTokenBalance: IERC20(_receiveToken).balanceOf(address(_setToken))
});
_validateCommon(actionInfo);
return actionInfo;
}
function _validateCommon(ActionInfo memory _actionInfo) internal view {
require(collateralCTokenEnabled[_actionInfo.setToken][_actionInfo.collateralCTokenAsset], "Collateral not enabled");
require(borrowCTokenEnabled[_actionInfo.setToken][_actionInfo.borrowCTokenAsset], "Borrow not enabled");
require(_actionInfo.collateralCTokenAsset != _actionInfo.borrowCTokenAsset, "Must be different");
require(_actionInfo.notionalSendQuantity > 0, "Quantity is 0");
}
function _getCollateralPosition(ISetToken _setToken, ICErc20 _cToken, uint256 _setTotalSupply) internal view returns (uint256) {
uint256 collateralNotionalBalance = _cToken.balanceOf(address(_setToken));
return collateralNotionalBalance.preciseDiv(_setTotalSupply);
}
function _getBorrowPosition(ISetToken _setToken, ICErc20 _cToken, uint256 _setTotalSupply, bool _shouldAccrueInterest) internal returns (int256) {
uint256 borrowNotionalBalance = _shouldAccrueInterest ? _cToken.borrowBalanceCurrent(address(_setToken)) : _cToken.borrowBalanceStored(address(_setToken));
int256 borrowPositionUnit = borrowNotionalBalance.preciseDivCeil(_setTotalSupply).toInt256().mul(-1);
return borrowPositionUnit;
}
}
| 896,446 |
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/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import { AaveV2 } from "../integration/lib/AaveV2.sol";
import { IAToken } from "../../interfaces/external/aave-v2/IAToken.sol";
import { IController } from "../../interfaces/IController.sol";
import { IDebtIssuanceModule } from "../../interfaces/IDebtIssuanceModule.sol";
import { IExchangeAdapter } from "../../interfaces/IExchangeAdapter.sol";
import { ILendingPool } from "../../interfaces/external/aave-v2/ILendingPool.sol";
import { ILendingPoolAddressesProvider } from "../../interfaces/external/aave-v2/ILendingPoolAddressesProvider.sol";
import { IModuleIssuanceHook } from "../../interfaces/IModuleIssuanceHook.sol";
import { IProtocolDataProvider } from "../../interfaces/external/aave-v2/IProtocolDataProvider.sol";
import { ISetToken } from "../../interfaces/ISetToken.sol";
import { IVariableDebtToken } from "../../interfaces/external/aave-v2/IVariableDebtToken.sol";
import { ModuleBase } from "../lib/ModuleBase.sol";
/**
* @title AaveLeverageModule
* @author Set Protocol
* @notice Smart contract that enables leverage trading using Aave as the lending protocol.
* @dev Do not use this module in conjunction with other debt modules that allow Aave debt positions as it could lead to double counting of
* debt when borrowed assets are the same.
*/
contract AaveLeverageModule is ModuleBase, ReentrancyGuard, Ownable, IModuleIssuanceHook {
using AaveV2 for ISetToken;
/* ============ Structs ============ */
struct EnabledAssets {
address[] collateralAssets; // Array of enabled underlying collateral assets for a SetToken
address[] borrowAssets; // Array of enabled underlying borrow assets for a SetToken
}
struct ActionInfo {
ISetToken setToken; // SetToken instance
ILendingPool lendingPool; // Lending pool instance, we grab this everytime since it's best practice not to store
IExchangeAdapter exchangeAdapter; // Exchange adapter instance
uint256 setTotalSupply; // Total supply of SetToken
uint256 notionalSendQuantity; // Total notional quantity sent to exchange
uint256 minNotionalReceiveQuantity; // Min total notional received from exchange
IERC20 collateralAsset; // Address of collateral asset
IERC20 borrowAsset; // Address of borrow asset
uint256 preTradeReceiveTokenBalance; // Balance of pre-trade receive token balance
}
struct ReserveTokens {
IAToken aToken; // Reserve's aToken instance
IVariableDebtToken variableDebtToken; // Reserve's variable debt token instance
}
/* ============ Events ============ */
/**
* @dev Emitted on lever()
* @param _setToken Instance of the SetToken being levered
* @param _borrowAsset Asset being borrowed for leverage
* @param _collateralAsset Collateral asset being levered
* @param _exchangeAdapter Exchange adapter used for trading
* @param _totalBorrowAmount Total amount of `_borrowAsset` borrowed
* @param _totalReceiveAmount Total amount of `_collateralAsset` received by selling `_borrowAsset`
* @param _protocolFee Protocol fee charged
*/
event LeverageIncreased(
ISetToken indexed _setToken,
IERC20 indexed _borrowAsset,
IERC20 indexed _collateralAsset,
IExchangeAdapter _exchangeAdapter,
uint256 _totalBorrowAmount,
uint256 _totalReceiveAmount,
uint256 _protocolFee
);
/**
* @dev Emitted on delever() and deleverToZeroBorrowBalance()
* @param _setToken Instance of the SetToken being delevered
* @param _collateralAsset Asset sold to decrease leverage
* @param _repayAsset Asset being bought to repay to Aave
* @param _exchangeAdapter Exchange adapter used for trading
* @param _totalRedeemAmount Total amount of `_collateralAsset` being sold
* @param _totalRepayAmount Total amount of `_repayAsset` being repaid
* @param _protocolFee Protocol fee charged
*/
event LeverageDecreased(
ISetToken indexed _setToken,
IERC20 indexed _collateralAsset,
IERC20 indexed _repayAsset,
IExchangeAdapter _exchangeAdapter,
uint256 _totalRedeemAmount,
uint256 _totalRepayAmount,
uint256 _protocolFee
);
/**
* @dev Emitted on addCollateralAssets() and removeCollateralAssets()
* @param _setToken Instance of SetToken whose collateral assets is updated
* @param _added true if assets are added false if removed
* @param _assets Array of collateral assets being added/removed
*/
event CollateralAssetsUpdated(
ISetToken indexed _setToken,
bool indexed _added,
IERC20[] _assets
);
/**
* @dev Emitted on addBorrowAssets() and removeBorrowAssets()
* @param _setToken Instance of SetToken whose borrow assets is updated
* @param _added true if assets are added false if removed
* @param _assets Array of borrow assets being added/removed
*/
event BorrowAssetsUpdated(
ISetToken indexed _setToken,
bool indexed _added,
IERC20[] _assets
);
/**
* @dev Emitted when `underlyingToReserveTokensMappings` is updated
* @param _underlying Address of the underlying asset
* @param _aToken Updated aave reserve aToken
* @param _variableDebtToken Updated aave reserve variable debt token
*/
event ReserveTokensUpdated(
IERC20 indexed _underlying,
IAToken indexed _aToken,
IVariableDebtToken indexed _variableDebtToken
);
/**
* @dev Emitted on updateAllowedSetToken()
* @param _setToken SetToken being whose allowance to initialize this module is being updated
* @param _added true if added false if removed
*/
event SetTokenStatusUpdated(
ISetToken indexed _setToken,
bool indexed _added
);
/**
* @dev Emitted on updateAnySetAllowed()
* @param _anySetAllowed true if any set is allowed to initialize this module, false otherwise
*/
event AnySetAllowedUpdated(
bool indexed _anySetAllowed
);
/* ============ Constants ============ */
// This module only supports borrowing in variable rate mode from Aave which is represented by 2
uint256 constant internal BORROW_RATE_MODE = 2;
// String identifying the DebtIssuanceModule in the IntegrationRegistry. Note: Governance must add DefaultIssuanceModule as
// the string as the integration name
string constant internal DEFAULT_ISSUANCE_MODULE_NAME = "DefaultIssuanceModule";
// 0 index stores protocol fee % on the controller, charged in the _executeTrade function
uint256 constant internal PROTOCOL_TRADE_FEE_INDEX = 0;
/* ============ State Variables ============ */
// Mapping to efficiently fetch reserve token addresses. Tracking Aave reserve token addresses and updating them
// upon requirement is more efficient than fetching them each time from Aave.
// Note: For an underlying asset to be enabled as collateral/borrow asset on SetToken, it must be added to this mapping first.
mapping(IERC20 => ReserveTokens) public underlyingToReserveTokens;
// Used to fetch reserves and user data from AaveV2
IProtocolDataProvider public immutable protocolDataProvider;
// Used to fetch lendingPool address. This contract is immutable and its address will never change.
ILendingPoolAddressesProvider public immutable lendingPoolAddressesProvider;
// Mapping to efficiently check if collateral asset is enabled in SetToken
mapping(ISetToken => mapping(IERC20 => bool)) public collateralAssetEnabled;
// Mapping to efficiently check if a borrow asset is enabled in SetToken
mapping(ISetToken => mapping(IERC20 => bool)) public borrowAssetEnabled;
// Internal mapping of enabled collateral and borrow tokens for syncing positions
mapping(ISetToken => EnabledAssets) internal enabledAssets;
// Mapping of SetToken to boolean indicating if SetToken is on allow list. Updateable by governance
mapping(ISetToken => bool) public allowedSetTokens;
// Boolean that returns if any SetToken can initialize this module. If false, then subject to allow list. Updateable by governance.
bool public anySetAllowed;
/* ============ Constructor ============ */
/**
* @dev Instantiate addresses. Underlying to reserve tokens mapping is created.
* @param _controller Address of controller contract
* @param _lendingPoolAddressesProvider Address of Aave LendingPoolAddressProvider
*/
constructor(
IController _controller,
ILendingPoolAddressesProvider _lendingPoolAddressesProvider
)
public
ModuleBase(_controller)
{
lendingPoolAddressesProvider = _lendingPoolAddressesProvider;
IProtocolDataProvider _protocolDataProvider = IProtocolDataProvider(
// Use the raw input vs bytes32() conversion. This is to ensure the input is an uint and not a string.
_lendingPoolAddressesProvider.getAddress(0x0100000000000000000000000000000000000000000000000000000000000000)
);
protocolDataProvider = _protocolDataProvider;
IProtocolDataProvider.TokenData[] memory reserveTokens = _protocolDataProvider.getAllReservesTokens();
for(uint256 i = 0; i < reserveTokens.length; i++) {
(address aToken, , address variableDebtToken) = _protocolDataProvider.getReserveTokensAddresses(reserveTokens[i].tokenAddress);
underlyingToReserveTokens[IERC20(reserveTokens[i].tokenAddress)] = ReserveTokens(IAToken(aToken), IVariableDebtToken(variableDebtToken));
}
}
/* ============ External Functions ============ */
/**
* @dev MANAGER ONLY: Increases leverage for a given collateral position using an enabled borrow asset.
* Borrows _borrowAsset from Aave. Performs a DEX trade, exchanging the _borrowAsset for _collateralAsset.
* Deposits _collateralAsset to Aave and mints corresponding aToken.
* Note: Both collateral and borrow assets need to be enabled, and they must not be the same asset.
* @param _setToken Instance of the SetToken
* @param _borrowAsset Address of underlying asset being borrowed for leverage
* @param _collateralAsset Address of underlying collateral asset
* @param _borrowQuantityUnits Borrow quantity of asset in position units
* @param _minReceiveQuantityUnits Min receive quantity of collateral asset to receive post-trade in position units
* @param _tradeAdapterName Name of trade adapter
* @param _tradeData Arbitrary data for trade
*/
function lever(
ISetToken _setToken,
IERC20 _borrowAsset,
IERC20 _collateralAsset,
uint256 _borrowQuantityUnits,
uint256 _minReceiveQuantityUnits,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
// For levering up, send quantity is derived from borrow asset and receive quantity is derived from
// collateral asset
ActionInfo memory leverInfo = _createAndValidateActionInfo(
_setToken,
_borrowAsset,
_collateralAsset,
_borrowQuantityUnits,
_minReceiveQuantityUnits,
_tradeAdapterName,
true
);
_borrow(leverInfo.setToken, leverInfo.lendingPool, leverInfo.borrowAsset, leverInfo.notionalSendQuantity);
uint256 postTradeReceiveQuantity = _executeTrade(leverInfo, _borrowAsset, _collateralAsset, _tradeData);
uint256 protocolFee = _accrueProtocolFee(_setToken, _collateralAsset, postTradeReceiveQuantity);
uint256 postTradeCollateralQuantity = postTradeReceiveQuantity.sub(protocolFee);
_deposit(leverInfo.setToken, leverInfo.lendingPool, _collateralAsset, postTradeCollateralQuantity);
_updateLeverPositions(leverInfo, _borrowAsset);
emit LeverageIncreased(
_setToken,
_borrowAsset,
_collateralAsset,
leverInfo.exchangeAdapter,
leverInfo.notionalSendQuantity,
postTradeCollateralQuantity,
protocolFee
);
}
/**
* @dev MANAGER ONLY: Decrease leverage for a given collateral position using an enabled borrow asset.
* Withdraws _collateralAsset from Aave. Performs a DEX trade, exchanging the _collateralAsset for _repayAsset.
* Repays _repayAsset to Aave and burns corresponding debt tokens.
* Note: Both collateral and borrow assets need to be enabled, and they must not be the same asset.
* @param _setToken Instance of the SetToken
* @param _collateralAsset Address of underlying collateral asset being withdrawn
* @param _repayAsset Address of underlying borrowed asset being repaid
* @param _redeemQuantityUnits Quantity of collateral asset to delever in position units
* @param _minRepayQuantityUnits Minimum amount of repay asset to receive post trade in position units
* @param _tradeAdapterName Name of trade adapter
* @param _tradeData Arbitrary data for trade
*/
function delever(
ISetToken _setToken,
IERC20 _collateralAsset,
IERC20 _repayAsset,
uint256 _redeemQuantityUnits,
uint256 _minRepayQuantityUnits,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
{
// Note: for delevering, send quantity is derived from collateral asset and receive quantity is derived from
// repay asset
ActionInfo memory deleverInfo = _createAndValidateActionInfo(
_setToken,
_collateralAsset,
_repayAsset,
_redeemQuantityUnits,
_minRepayQuantityUnits,
_tradeAdapterName,
false
);
_withdraw(deleverInfo.setToken, deleverInfo.lendingPool, _collateralAsset, deleverInfo.notionalSendQuantity);
uint256 postTradeReceiveQuantity = _executeTrade(deleverInfo, _collateralAsset, _repayAsset, _tradeData);
uint256 protocolFee = _accrueProtocolFee(_setToken, _repayAsset, postTradeReceiveQuantity);
uint256 repayQuantity = postTradeReceiveQuantity.sub(protocolFee);
_repayBorrow(deleverInfo.setToken, deleverInfo.lendingPool, _repayAsset, repayQuantity);
_updateDeleverPositions(deleverInfo, _repayAsset);
emit LeverageDecreased(
_setToken,
_collateralAsset,
_repayAsset,
deleverInfo.exchangeAdapter,
deleverInfo.notionalSendQuantity,
repayQuantity,
protocolFee
);
}
/** @dev MANAGER ONLY: Pays down the borrow asset to 0 selling off a given amount of collateral asset.
* Withdraws _collateralAsset from Aave. Performs a DEX trade, exchanging the _collateralAsset for _repayAsset.
* Minimum receive amount for the DEX trade is set to the current variable debt balance of the borrow asset.
* Repays received _repayAsset to Aave which burns corresponding debt tokens. Any extra received borrow asset is .
* updated as equity. No protocol fee is charged.
* Note: Both collateral and borrow assets need to be enabled, and they must not be the same asset.
* The function reverts if not enough collateral asset is redeemed to buy the required minimum amount of _repayAsset.
* @param _setToken Instance of the SetToken
* @param _collateralAsset Address of underlying collateral asset being redeemed
* @param _repayAsset Address of underlying asset being repaid
* @param _redeemQuantityUnits Quantity of collateral asset to delever in position units
* @param _tradeAdapterName Name of trade adapter
* @param _tradeData Arbitrary data for trade
* @return uint256 Notional repay quantity
*/
function deleverToZeroBorrowBalance(
ISetToken _setToken,
IERC20 _collateralAsset,
IERC20 _repayAsset,
uint256 _redeemQuantityUnits,
string memory _tradeAdapterName,
bytes memory _tradeData
)
external
nonReentrant
onlyManagerAndValidSet(_setToken)
returns (uint256)
{
uint256 setTotalSupply = _setToken.totalSupply();
uint256 notionalRedeemQuantity = _redeemQuantityUnits.preciseMul(setTotalSupply);
require(borrowAssetEnabled[_setToken][_repayAsset], "Borrow not enabled");
uint256 notionalRepayQuantity = underlyingToReserveTokens[_repayAsset].variableDebtToken.balanceOf(address(_setToken));
require(notionalRepayQuantity > 0, "Borrow balance is zero");
ActionInfo memory deleverInfo = _createAndValidateActionInfoNotional(
_setToken,
_collateralAsset,
_repayAsset,
notionalRedeemQuantity,
notionalRepayQuantity,
_tradeAdapterName,
false,
setTotalSupply
);
_withdraw(deleverInfo.setToken, deleverInfo.lendingPool, _collateralAsset, deleverInfo.notionalSendQuantity);
_executeTrade(deleverInfo, _collateralAsset, _repayAsset, _tradeData);
_repayBorrow(deleverInfo.setToken, deleverInfo.lendingPool, _repayAsset, notionalRepayQuantity);
_updateDeleverPositions(deleverInfo, _repayAsset);
emit LeverageDecreased(
_setToken,
_collateralAsset,
_repayAsset,
deleverInfo.exchangeAdapter,
deleverInfo.notionalSendQuantity,
notionalRepayQuantity,
0 // No protocol fee
);
return notionalRepayQuantity;
}
/**
* @dev CALLABLE BY ANYBODY: Sync Set positions with ALL enabled Aave collateral and borrow positions.
* For collateral assets, update aToken default position. For borrow assets, update external borrow position.
* - Collateral assets may come out of sync when interest is accrued or a position is liquidated
* - Borrow assets may come out of sync when interest is accrued or position is liquidated and borrow is repaid
* Note: In Aave, both collateral and borrow interest is accrued in each block by increasing the balance of
* aTokens and debtTokens for each user, and 1 aToken = 1 variableDebtToken = 1 underlying.
* @param _setToken Instance of the SetToken
*/
function sync(ISetToken _setToken) public nonReentrant onlyValidAndInitializedSet(_setToken) {
uint256 setTotalSupply = _setToken.totalSupply();
// Only sync positions when Set supply is not 0. Without this check, if sync is called by someone before the
// first issuance, then editDefaultPosition would remove the default positions from the SetToken
if (setTotalSupply > 0) {
address[] memory collateralAssets = enabledAssets[_setToken].collateralAssets;
for(uint256 i = 0; i < collateralAssets.length; i++) {
IAToken aToken = underlyingToReserveTokens[IERC20(collateralAssets[i])].aToken;
uint256 previousPositionUnit = _setToken.getDefaultPositionRealUnit(address(aToken)).toUint256();
uint256 newPositionUnit = _getCollateralPosition(_setToken, aToken, setTotalSupply);
// Note: Accounts for if position does not exist on SetToken but is tracked in enabledAssets
if (previousPositionUnit != newPositionUnit) {
_updateCollateralPosition(_setToken, aToken, newPositionUnit);
}
}
address[] memory borrowAssets = enabledAssets[_setToken].borrowAssets;
for(uint256 i = 0; i < borrowAssets.length; i++) {
IERC20 borrowAsset = IERC20(borrowAssets[i]);
int256 previousPositionUnit = _setToken.getExternalPositionRealUnit(address(borrowAsset), address(this));
int256 newPositionUnit = _getBorrowPosition(_setToken, borrowAsset, setTotalSupply);
// Note: Accounts for if position does not exist on SetToken but is tracked in enabledAssets
if (newPositionUnit != previousPositionUnit) {
_updateBorrowPosition(_setToken, borrowAsset, newPositionUnit);
}
}
}
}
/**
* @dev MANAGER ONLY: Initializes this module to the SetToken. Either the SetToken needs to be on the allowed list
* or anySetAllowed needs to be true. Only callable by the SetToken's manager.
* Note: Managers can enable collateral and borrow assets that don't exist as positions on the SetToken
* @param _setToken Instance of the SetToken to initialize
* @param _collateralAssets Underlying tokens to be enabled as collateral in the SetToken
* @param _borrowAssets Underlying tokens to be enabled as borrow in the SetToken
*/
function initialize(
ISetToken _setToken,
IERC20[] memory _collateralAssets,
IERC20[] memory _borrowAssets
)
external
onlySetManager(_setToken, msg.sender)
onlyValidAndPendingSet(_setToken)
{
if (!anySetAllowed) {
require(allowedSetTokens[_setToken], "Not allowed SetToken");
}
// Initialize module before trying register
_setToken.initializeModule();
// Get debt issuance module registered to this module and require that it is initialized
require(_setToken.isInitializedModule(getAndValidateAdapter(DEFAULT_ISSUANCE_MODULE_NAME)), "Issuance not initialized");
// Try if register exists on any of the modules including the debt issuance module
address[] memory modules = _setToken.getModules();
for(uint256 i = 0; i < modules.length; i++) {
try IDebtIssuanceModule(modules[i]).registerToIssuanceModule(_setToken) {} catch {}
}
// _collateralAssets and _borrowAssets arrays are validated in their respective internal functions
_addCollateralAssets(_setToken, _collateralAssets);
_addBorrowAssets(_setToken, _borrowAssets);
}
/**
* @dev MANAGER ONLY: Removes this module from the SetToken, via call by the SetToken. Any deposited collateral assets
* are disabled to be used as collateral on Aave. Aave Settings and manager enabled assets state is deleted.
* Note: Function will revert is there is any debt remaining on Aave
*/
function removeModule() external override onlyValidAndInitializedSet(ISetToken(msg.sender)) {
ISetToken setToken = ISetToken(msg.sender);
// Sync Aave and SetToken positions prior to any removal action
sync(setToken);
address[] memory borrowAssets = enabledAssets[setToken].borrowAssets;
for(uint256 i = 0; i < borrowAssets.length; i++) {
IERC20 borrowAsset = IERC20(borrowAssets[i]);
require(underlyingToReserveTokens[borrowAsset].variableDebtToken.balanceOf(address(setToken)) == 0, "Variable debt remaining");
delete borrowAssetEnabled[setToken][borrowAsset];
}
address[] memory collateralAssets = enabledAssets[setToken].collateralAssets;
for(uint256 i = 0; i < collateralAssets.length; i++) {
IERC20 collateralAsset = IERC20(collateralAssets[i]);
_updateUseReserveAsCollateral(setToken, collateralAsset, false);
delete collateralAssetEnabled[setToken][collateralAsset];
}
delete enabledAssets[setToken];
// Try if unregister exists on any of the modules
address[] memory modules = setToken.getModules();
for(uint256 i = 0; i < modules.length; i++) {
try IDebtIssuanceModule(modules[i]).unregisterFromIssuanceModule(setToken) {} catch {}
}
}
/**
* @dev MANAGER ONLY: Add registration of this module on the debt issuance module for the SetToken.
* Note: if the debt issuance module is not added to SetToken before this module is initialized, then this function
* needs to be called if the debt issuance module is later added and initialized to prevent state inconsistencies
* @param _setToken Instance of the SetToken
* @param _debtIssuanceModule Debt issuance module address to register
*/
function registerToModule(ISetToken _setToken, IDebtIssuanceModule _debtIssuanceModule) external onlyManagerAndValidSet(_setToken) {
require(_setToken.isInitializedModule(address(_debtIssuanceModule)), "Issuance not initialized");
_debtIssuanceModule.registerToIssuanceModule(_setToken);
}
/**
* @dev CALLABLE BY ANYBODY: Updates `underlyingToReserveTokens` mappings. Reverts if mapping already exists
* or the passed _underlying asset does not have a valid reserve on Aave.
* Note: Call this function when Aave adds a new reserve.
* @param _underlying Address of underlying asset
*/
function addUnderlyingToReserveTokensMapping(IERC20 _underlying) external {
require(address(underlyingToReserveTokens[_underlying].aToken) == address(0), "Mapping already exists");
// An active reserve is an alias for a valid reserve on Aave.
(,,,,,,,, bool isActive,) = protocolDataProvider.getReserveConfigurationData(address(_underlying));
require(isActive, "Invalid aave reserve");
_addUnderlyingToReserveTokensMapping(_underlying);
}
/**
* @dev MANAGER ONLY: Add collateral assets. aTokens corresponding to collateral assets are tracked for syncing positions.
* Note: Reverts with "Collateral already enabled" if there are duplicate assets in the passed _newCollateralAssets array.
*
* NOTE: ALL ADDED COLLATERAL ASSETS CAN BE ADDED AS A POSITION ON THE SET TOKEN WITHOUT MANAGER'S EXPLICIT PERMISSION.
* UNWANTED EXTRA POSITIONS CAN BREAK EXTERNAL LOGIC, INCREASE COST OF MINT/REDEEM OF SET TOKEN, AMONG OTHER POTENTIAL UNINTENDED CONSEQUENCES.
* SO, PLEASE ADD ONLY THOSE COLLATERAL ASSETS WHOSE CORRESPONDING aTOKENS ARE NEEDED AS DEFAULT POSITIONS ON THE SET TOKEN.
*
* @param _setToken Instance of the SetToken
* @param _newCollateralAssets Addresses of new collateral underlying assets
*/
function addCollateralAssets(ISetToken _setToken, IERC20[] memory _newCollateralAssets) external onlyManagerAndValidSet(_setToken) {
_addCollateralAssets(_setToken, _newCollateralAssets);
}
/**
* @dev MANAGER ONLY: Remove collateral assets. Disable deposited assets to be used as collateral on Aave market.
* @param _setToken Instance of the SetToken
* @param _collateralAssets Addresses of collateral underlying assets to remove
*/
function removeCollateralAssets(ISetToken _setToken, IERC20[] memory _collateralAssets) external onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _collateralAssets.length; i++) {
IERC20 collateralAsset = _collateralAssets[i];
require(collateralAssetEnabled[_setToken][collateralAsset], "Collateral not enabled");
_updateUseReserveAsCollateral(_setToken, collateralAsset, false);
delete collateralAssetEnabled[_setToken][collateralAsset];
enabledAssets[_setToken].collateralAssets.removeStorage(address(collateralAsset));
}
emit CollateralAssetsUpdated(_setToken, false, _collateralAssets);
}
/**
* @dev MANAGER ONLY: Add borrow assets. Debt tokens corresponding to borrow assets are tracked for syncing positions.
* Note: Reverts with "Borrow already enabled" if there are duplicate assets in the passed _newBorrowAssets array.
* @param _setToken Instance of the SetToken
* @param _newBorrowAssets Addresses of borrow underlying assets to add
*/
function addBorrowAssets(ISetToken _setToken, IERC20[] memory _newBorrowAssets) external onlyManagerAndValidSet(_setToken) {
_addBorrowAssets(_setToken, _newBorrowAssets);
}
/**
* @dev MANAGER ONLY: Remove borrow assets.
* Note: If there is a borrow balance, borrow asset cannot be removed
* @param _setToken Instance of the SetToken
* @param _borrowAssets Addresses of borrow underlying assets to remove
*/
function removeBorrowAssets(ISetToken _setToken, IERC20[] memory _borrowAssets) external onlyManagerAndValidSet(_setToken) {
for(uint256 i = 0; i < _borrowAssets.length; i++) {
IERC20 borrowAsset = _borrowAssets[i];
require(borrowAssetEnabled[_setToken][borrowAsset], "Borrow not enabled");
require(underlyingToReserveTokens[borrowAsset].variableDebtToken.balanceOf(address(_setToken)) == 0, "Variable debt remaining");
delete borrowAssetEnabled[_setToken][borrowAsset];
enabledAssets[_setToken].borrowAssets.removeStorage(address(borrowAsset));
}
emit BorrowAssetsUpdated(_setToken, false, _borrowAssets);
}
/**
* @dev GOVERNANCE ONLY: Enable/disable ability of a SetToken to initialize this module. Only callable by governance.
* @param _setToken Instance of the SetToken
* @param _status Bool indicating if _setToken is allowed to initialize this module
*/
function updateAllowedSetToken(ISetToken _setToken, bool _status) external onlyOwner {
require(controller.isSet(address(_setToken)) || allowedSetTokens[_setToken], "Invalid SetToken");
allowedSetTokens[_setToken] = _status;
emit SetTokenStatusUpdated(_setToken, _status);
}
/**
* @dev GOVERNANCE ONLY: Toggle whether ANY SetToken is allowed to initialize this module. Only callable by governance.
* @param _anySetAllowed Bool indicating if ANY SetToken is allowed to initialize this module
*/
function updateAnySetAllowed(bool _anySetAllowed) external onlyOwner {
anySetAllowed = _anySetAllowed;
emit AnySetAllowedUpdated(_anySetAllowed);
}
/**
* @dev MODULE ONLY: Hook called prior to issuance to sync positions on SetToken. Only callable by valid module.
* @param _setToken Instance of the SetToken
*/
function moduleIssueHook(ISetToken _setToken, uint256 /* _setTokenQuantity */) external override onlyModule(_setToken) {
sync(_setToken);
}
/**
* @dev MODULE ONLY: Hook called prior to redemption to sync positions on SetToken. For redemption, always use current borrowed
* balance after interest accrual. Only callable by valid module.
* @param _setToken Instance of the SetToken
*/
function moduleRedeemHook(ISetToken _setToken, uint256 /* _setTokenQuantity */) external override onlyModule(_setToken) {
sync(_setToken);
}
/**
* @dev MODULE ONLY: Hook called prior to looping through each component on issuance. Invokes borrow in order for
* module to return debt to issuer. Only callable by valid module.
* @param _setToken Instance of the SetToken
* @param _setTokenQuantity Quantity of SetToken
* @param _component Address of component
*/
function componentIssueHook(ISetToken _setToken, uint256 _setTokenQuantity, IERC20 _component, bool _isEquity) external override onlyModule(_setToken) {
// Check hook not being called for an equity position. If hook is called with equity position and outstanding borrow position
// exists the loan would be taken out twice potentially leading to liquidation
if (!_isEquity) {
int256 componentDebt = _setToken.getExternalPositionRealUnit(address(_component), address(this));
require(componentDebt < 0, "Component must be negative");
uint256 notionalDebt = componentDebt.mul(-1).toUint256().preciseMul(_setTokenQuantity);
_borrowForHook(_setToken, _component, notionalDebt);
}
}
/**
* @dev MODULE ONLY: Hook called prior to looping through each component on redemption. Invokes repay after
* the issuance module transfers debt from the issuer. Only callable by valid module.
* @param _setToken Instance of the SetToken
* @param _setTokenQuantity Quantity of SetToken
* @param _component Address of component
*/
function componentRedeemHook(ISetToken _setToken, uint256 _setTokenQuantity, IERC20 _component, bool _isEquity) external override onlyModule(_setToken) {
// Check hook not being called for an equity position. If hook is called with equity position and outstanding borrow position
// exists the loan would be paid down twice, decollateralizing the Set
if (!_isEquity) {
int256 componentDebt = _setToken.getExternalPositionRealUnit(address(_component), address(this));
require(componentDebt < 0, "Component must be negative");
uint256 notionalDebt = componentDebt.mul(-1).toUint256().preciseMulCeil(_setTokenQuantity);
_repayBorrowForHook(_setToken, _component, notionalDebt);
}
}
/* ============ External Getter Functions ============ */
/**
* @dev Get enabled assets for SetToken. Returns an array of collateral and borrow assets.
* @return Underlying collateral assets that are enabled
* @return Underlying borrowed assets that are enabled
*/
function getEnabledAssets(ISetToken _setToken) external view returns(address[] memory, address[] memory) {
return (
enabledAssets[_setToken].collateralAssets,
enabledAssets[_setToken].borrowAssets
);
}
/* ============ Internal Functions ============ */
/**
* @dev Invoke deposit from SetToken using AaveV2 library. Mints aTokens for SetToken.
*/
function _deposit(ISetToken _setToken, ILendingPool _lendingPool, IERC20 _asset, uint256 _notionalQuantity) internal {
_setToken.invokeApprove(address(_asset), address(_lendingPool), _notionalQuantity);
_setToken.invokeDeposit(_lendingPool, address(_asset), _notionalQuantity);
}
/**
* @dev Invoke withdraw from SetToken using AaveV2 library. Burns aTokens and returns underlying to SetToken.
*/
function _withdraw(ISetToken _setToken, ILendingPool _lendingPool, IERC20 _asset, uint256 _notionalQuantity) internal {
_setToken.invokeWithdraw(_lendingPool, address(_asset), _notionalQuantity);
}
/**
* @dev Invoke repay from SetToken using AaveV2 library. Burns DebtTokens for SetToken.
*/
function _repayBorrow(ISetToken _setToken, ILendingPool _lendingPool, IERC20 _asset, uint256 _notionalQuantity) internal {
_setToken.invokeApprove(address(_asset), address(_lendingPool), _notionalQuantity);
_setToken.invokeRepay(_lendingPool, address(_asset), _notionalQuantity, BORROW_RATE_MODE);
}
/**
* @dev Invoke borrow from the SetToken during issuance hook. Since we only need to interact with AAVE once we fetch the
* lending pool in this function to optimize vs forcing a fetch twice during lever/delever.
*/
function _repayBorrowForHook(ISetToken _setToken, IERC20 _asset, uint256 _notionalQuantity) internal {
_repayBorrow(_setToken, ILendingPool(lendingPoolAddressesProvider.getLendingPool()), _asset, _notionalQuantity);
}
/**
* @dev Invoke borrow from the SetToken using AaveV2 library. Mints DebtTokens for SetToken.
*/
function _borrow(ISetToken _setToken, ILendingPool _lendingPool, IERC20 _asset, uint256 _notionalQuantity) internal {
_setToken.invokeBorrow(_lendingPool, address(_asset), _notionalQuantity, BORROW_RATE_MODE);
}
/**
* @dev Invoke borrow from the SetToken during issuance hook. Since we only need to interact with AAVE once we fetch the
* lending pool in this function to optimize vs forcing a fetch twice during lever/delever.
*/
function _borrowForHook(ISetToken _setToken, IERC20 _asset, uint256 _notionalQuantity) internal {
_borrow(_setToken, ILendingPool(lendingPoolAddressesProvider.getLendingPool()), _asset, _notionalQuantity);
}
/**
* @dev Invokes approvals, gets trade call data from exchange adapter and invokes trade from SetToken
* @return uint256 The quantity of tokens received post-trade
*/
function _executeTrade(
ActionInfo memory _actionInfo,
IERC20 _sendToken,
IERC20 _receiveToken,
bytes memory _data
)
internal
returns (uint256)
{
ISetToken setToken = _actionInfo.setToken;
uint256 notionalSendQuantity = _actionInfo.notionalSendQuantity;
setToken.invokeApprove(
address(_sendToken),
_actionInfo.exchangeAdapter.getSpender(),
notionalSendQuantity
);
(
address targetExchange,
uint256 callValue,
bytes memory methodData
) = _actionInfo.exchangeAdapter.getTradeCalldata(
address(_sendToken),
address(_receiveToken),
address(setToken),
notionalSendQuantity,
_actionInfo.minNotionalReceiveQuantity,
_data
);
setToken.invoke(targetExchange, callValue, methodData);
uint256 receiveTokenQuantity = _receiveToken.balanceOf(address(setToken)).sub(_actionInfo.preTradeReceiveTokenBalance);
require(
receiveTokenQuantity >= _actionInfo.minNotionalReceiveQuantity,
"Slippage too high"
);
return receiveTokenQuantity;
}
/**
* @dev Calculates protocol fee on module and pays protocol fee from SetToken
* @return uint256 Total protocol fee paid
*/
function _accrueProtocolFee(ISetToken _setToken, IERC20 _receiveToken, uint256 _exchangedQuantity) internal returns(uint256) {
uint256 protocolFeeTotal = getModuleFee(PROTOCOL_TRADE_FEE_INDEX, _exchangedQuantity);
payProtocolFeeFromSetToken(_setToken, address(_receiveToken), protocolFeeTotal);
return protocolFeeTotal;
}
/**
* @dev Updates the collateral (aToken held) and borrow position (variableDebtToken held) of the SetToken
*/
function _updateLeverPositions(ActionInfo memory _actionInfo, IERC20 _borrowAsset) internal {
IAToken aToken = underlyingToReserveTokens[_actionInfo.collateralAsset].aToken;
_updateCollateralPosition(
_actionInfo.setToken,
aToken,
_getCollateralPosition(
_actionInfo.setToken,
aToken,
_actionInfo.setTotalSupply
)
);
_updateBorrowPosition(
_actionInfo.setToken,
_borrowAsset,
_getBorrowPosition(
_actionInfo.setToken,
_borrowAsset,
_actionInfo.setTotalSupply
)
);
}
/**
* @dev Updates positions as per _updateLeverPositions and updates Default position for borrow asset in case Set is
* delevered all the way to zero any remaining borrow asset after the debt is paid can be added as a position.
*/
function _updateDeleverPositions(ActionInfo memory _actionInfo, IERC20 _repayAsset) internal {
// if amount of tokens traded for exceeds debt, update default position first to save gas on editing borrow position
uint256 repayAssetBalance = _repayAsset.balanceOf(address(_actionInfo.setToken));
if (repayAssetBalance != _actionInfo.preTradeReceiveTokenBalance) {
_actionInfo.setToken.calculateAndEditDefaultPosition(
address(_repayAsset),
_actionInfo.setTotalSupply,
_actionInfo.preTradeReceiveTokenBalance
);
}
_updateLeverPositions(_actionInfo, _repayAsset);
}
/**
* @dev Updates default position unit for given aToken on SetToken
*/
function _updateCollateralPosition(ISetToken _setToken, IAToken _aToken, uint256 _newPositionUnit) internal {
_setToken.editDefaultPosition(address(_aToken), _newPositionUnit);
}
/**
* @dev Updates external position unit for given borrow asset on SetToken
*/
function _updateBorrowPosition(ISetToken _setToken, IERC20 _underlyingAsset, int256 _newPositionUnit) internal {
_setToken.editExternalPosition(address(_underlyingAsset), address(this), _newPositionUnit, "");
}
/**
* @dev Construct the ActionInfo struct for lever and delever
* @return ActionInfo Instance of constructed ActionInfo struct
*/
function _createAndValidateActionInfo(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _sendQuantityUnits,
uint256 _minReceiveQuantityUnits,
string memory _tradeAdapterName,
bool _isLever
)
internal
view
returns(ActionInfo memory)
{
uint256 totalSupply = _setToken.totalSupply();
return _createAndValidateActionInfoNotional(
_setToken,
_sendToken,
_receiveToken,
_sendQuantityUnits.preciseMul(totalSupply),
_minReceiveQuantityUnits.preciseMul(totalSupply),
_tradeAdapterName,
_isLever,
totalSupply
);
}
/**
* @dev Construct the ActionInfo struct for lever and delever accepting notional units
* @return ActionInfo Instance of constructed ActionInfo struct
*/
function _createAndValidateActionInfoNotional(
ISetToken _setToken,
IERC20 _sendToken,
IERC20 _receiveToken,
uint256 _notionalSendQuantity,
uint256 _minNotionalReceiveQuantity,
string memory _tradeAdapterName,
bool _isLever,
uint256 _setTotalSupply
)
internal
view
returns(ActionInfo memory)
{
ActionInfo memory actionInfo = ActionInfo ({
exchangeAdapter: IExchangeAdapter(getAndValidateAdapter(_tradeAdapterName)),
lendingPool: ILendingPool(lendingPoolAddressesProvider.getLendingPool()),
setToken: _setToken,
collateralAsset: _isLever ? _receiveToken : _sendToken,
borrowAsset: _isLever ? _sendToken : _receiveToken,
setTotalSupply: _setTotalSupply,
notionalSendQuantity: _notionalSendQuantity,
minNotionalReceiveQuantity: _minNotionalReceiveQuantity,
preTradeReceiveTokenBalance: IERC20(_receiveToken).balanceOf(address(_setToken))
});
_validateCommon(actionInfo);
return actionInfo;
}
/**
* @dev Updates `underlyingToReserveTokens` mappings for given `_underlying` asset. Emits ReserveTokensUpdated event.
*/
function _addUnderlyingToReserveTokensMapping(IERC20 _underlying) internal {
(address aToken, , address variableDebtToken) = protocolDataProvider.getReserveTokensAddresses(address(_underlying));
underlyingToReserveTokens[_underlying].aToken = IAToken(aToken);
underlyingToReserveTokens[_underlying].variableDebtToken = IVariableDebtToken(variableDebtToken);
emit ReserveTokensUpdated(_underlying, IAToken(aToken), IVariableDebtToken(variableDebtToken));
}
/**
* @dev Add collateral assets to SetToken. Updates the collateralAssetsEnabled and enabledAssets mappings.
* Emits CollateralAssetsUpdated event.
*/
function _addCollateralAssets(ISetToken _setToken, IERC20[] memory _newCollateralAssets) internal {
for(uint256 i = 0; i < _newCollateralAssets.length; i++) {
IERC20 collateralAsset = _newCollateralAssets[i];
_validateNewCollateralAsset(_setToken, collateralAsset);
_updateUseReserveAsCollateral(_setToken, collateralAsset, true);
collateralAssetEnabled[_setToken][collateralAsset] = true;
enabledAssets[_setToken].collateralAssets.push(address(collateralAsset));
}
emit CollateralAssetsUpdated(_setToken, true, _newCollateralAssets);
}
/**
* @dev Add borrow assets to SetToken. Updates the borrowAssetsEnabled and enabledAssets mappings.
* Emits BorrowAssetsUpdated event.
*/
function _addBorrowAssets(ISetToken _setToken, IERC20[] memory _newBorrowAssets) internal {
for(uint256 i = 0; i < _newBorrowAssets.length; i++) {
IERC20 borrowAsset = _newBorrowAssets[i];
_validateNewBorrowAsset(_setToken, borrowAsset);
borrowAssetEnabled[_setToken][borrowAsset] = true;
enabledAssets[_setToken].borrowAssets.push(address(borrowAsset));
}
emit BorrowAssetsUpdated(_setToken, true, _newBorrowAssets);
}
/**
* @dev Updates SetToken's ability to use an asset as collateral on Aave
*/
function _updateUseReserveAsCollateral(ISetToken _setToken, IERC20 _asset, bool _useAsCollateral) internal {
/*
Note: Aave ENABLES an asset to be used as collateral by `to` address in an `aToken.transfer(to, amount)` call provided
1. msg.sender (from address) isn't the same as `to` address
2. `to` address had zero aToken balance before the transfer
3. transfer `amount` is greater than 0
Note: Aave DISABLES an asset to be used as collateral by `msg.sender`in an `aToken.transfer(to, amount)` call provided
1. msg.sender (from address) isn't the same as `to` address
2. msg.sender has zero balance after the transfer
Different states of the SetToken and what this function does in those states:
Case 1: Manager adds collateral asset to SetToken before first issuance
- Since aToken.balanceOf(setToken) == 0, we do not call `setToken.invokeUserUseReserveAsCollateral` because Aave
requires aToken balance to be greater than 0 before enabling/disabling the underlying asset to be used as collateral
on Aave markets.
Case 2: First issuance of the SetToken
- SetToken was initialized with aToken as default position
- DebtIssuanceModule reads the default position and transfers corresponding aToken from the issuer to the SetToken
- Aave enables aToken to be used as collateral by the SetToken
- Manager calls lever() and the aToken is used as collateral to borrow other assets
Case 3: Manager removes collateral asset from the SetToken
- Disable asset to be used as collateral on SetToken by calling `setToken.invokeSetUserUseReserveAsCollateral` with
useAsCollateral equals false
- Note: If health factor goes below 1 by removing the collateral asset, then Aave reverts on the above call, thus whole
transaction reverts, and manager can't remove corresponding collateral asset
Case 4: Manager adds collateral asset after removing it
- If aToken.balanceOf(setToken) > 0, we call `setToken.invokeUserUseReserveAsCollateral` and the corresponding aToken
is re-enabled as collateral on Aave
Case 5: On redemption/delever/liquidated and aToken balance becomes zero
- Aave disables aToken to be used as collateral by SetToken
Values of variables in below if condition and corresponding action taken:
---------------------------------------------------------------------------------------------------------------------
| usageAsCollateralEnabled | _useAsCollateral | aToken.balanceOf() | Action |
|--------------------------|-------------------|-----------------------|--------------------------------------------|
| true | true | X | Skip invoke. Save gas. |
|--------------------------|-------------------|-----------------------|--------------------------------------------|
| true | false | greater than 0 | Invoke and set to false. |
|--------------------------|-------------------|-----------------------|--------------------------------------------|
| true | false | = 0 | Impossible case. Aave disables usage as |
| | | | collateral when aToken balance becomes 0 |
|--------------------------|-------------------|-----------------------|--------------------------------------------|
| false | false | X | Skip invoke. Save gas. |
|--------------------------|-------------------|-----------------------|--------------------------------------------|
| false | true | greater than 0 | Invoke and set to true. |
|--------------------------|-------------------|-----------------------|--------------------------------------------|
| false | true | = 0 | Don't invoke. Will revert. |
---------------------------------------------------------------------------------------------------------------------
*/
(,,,,,,,,bool usageAsCollateralEnabled) = protocolDataProvider.getUserReserveData(address(_asset), address(_setToken));
if (
usageAsCollateralEnabled != _useAsCollateral
&& underlyingToReserveTokens[_asset].aToken.balanceOf(address(_setToken)) > 0
) {
_setToken.invokeSetUserUseReserveAsCollateral(
ILendingPool(lendingPoolAddressesProvider.getLendingPool()),
address(_asset),
_useAsCollateral
);
}
}
/**
* @dev Validate common requirements for lever and delever
*/
function _validateCommon(ActionInfo memory _actionInfo) internal view {
require(collateralAssetEnabled[_actionInfo.setToken][_actionInfo.collateralAsset], "Collateral not enabled");
require(borrowAssetEnabled[_actionInfo.setToken][_actionInfo.borrowAsset], "Borrow not enabled");
require(_actionInfo.collateralAsset != _actionInfo.borrowAsset, "Collateral and borrow asset must be different");
require(_actionInfo.notionalSendQuantity > 0, "Quantity is 0");
}
/**
* @dev Validates if a new asset can be added as collateral asset for given SetToken
*/
function _validateNewCollateralAsset(ISetToken _setToken, IERC20 _asset) internal view {
require(!collateralAssetEnabled[_setToken][_asset], "Collateral already enabled");
(address aToken, , ) = protocolDataProvider.getReserveTokensAddresses(address(_asset));
require(address(underlyingToReserveTokens[_asset].aToken) == aToken, "Invalid aToken address");
( , , , , , bool usageAsCollateralEnabled, , , bool isActive, bool isFrozen) = protocolDataProvider.getReserveConfigurationData(address(_asset));
// An active reserve is an alias for a valid reserve on Aave.
// We are checking for the availability of the reserve directly on Aave rather than checking our internal `underlyingToReserveTokens` mappings,
// because our mappings can be out-of-date if a new reserve is added to Aave
require(isActive, "Invalid aave reserve");
// A frozen reserve doesn't allow any new deposit, borrow or rate swap but allows repayments, liquidations and withdrawals
require(!isFrozen, "Frozen aave reserve");
require(usageAsCollateralEnabled, "Collateral disabled on Aave");
}
/**
* @dev Validates if a new asset can be added as borrow asset for given SetToken
*/
function _validateNewBorrowAsset(ISetToken _setToken, IERC20 _asset) internal view {
require(!borrowAssetEnabled[_setToken][_asset], "Borrow already enabled");
( , , address variableDebtToken) = protocolDataProvider.getReserveTokensAddresses(address(_asset));
require(address(underlyingToReserveTokens[_asset].variableDebtToken) == variableDebtToken, "Invalid variable debt token address");
(, , , , , , bool borrowingEnabled, , bool isActive, bool isFrozen) = protocolDataProvider.getReserveConfigurationData(address(_asset));
require(isActive, "Invalid aave reserve");
require(!isFrozen, "Frozen aave reserve");
require(borrowingEnabled, "Borrowing disabled on Aave");
}
/**
* @dev Reads aToken balance and calculates default position unit for given collateral aToken and SetToken
*
* @return uint256 default collateral position unit
*/
function _getCollateralPosition(ISetToken _setToken, IAToken _aToken, uint256 _setTotalSupply) internal view returns (uint256) {
uint256 collateralNotionalBalance = _aToken.balanceOf(address(_setToken));
return collateralNotionalBalance.preciseDiv(_setTotalSupply);
}
/**
* @dev Reads variableDebtToken balance and calculates external position unit for given borrow asset and SetToken
*
* @return int256 external borrow position unit
*/
function _getBorrowPosition(ISetToken _setToken, IERC20 _borrowAsset, uint256 _setTotalSupply) internal view returns (int256) {
uint256 borrowNotionalBalance = underlyingToReserveTokens[_borrowAsset].variableDebtToken.balanceOf(address(_setToken));
return borrowNotionalBalance.preciseDivCeil(_setTotalSupply).toInt256().mul(-1);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../GSN/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor () internal {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { ILendingPool } from "../../../interfaces/external/aave-v2/ILendingPool.sol";
import { ISetToken } from "../../../interfaces/ISetToken.sol";
/**
* @title AaveV2
* @author Set Protocol
*
* Collection of helper functions for interacting with AaveV2 integrations.
*/
library AaveV2 {
/* ============ External ============ */
/**
* Get deposit calldata from SetToken
*
* Deposits an `_amountNotional` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. User deposits 100 USDC and gets in return 100 aUSDC
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset to deposit
* @param _amountNotional The amount to be deposited
* @param _onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
* wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
* is a different wallet
* @param _referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
*
* @return address Target contract address
* @return uint256 Call value
* @return bytes Deposit calldata
*/
function getDepositCalldata(
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional,
address _onBehalfOf,
uint16 _referralCode
)
public
pure
returns (address, uint256, bytes memory)
{
bytes memory callData = abi.encodeWithSignature(
"deposit(address,uint256,address,uint16)",
_asset,
_amountNotional,
_onBehalfOf,
_referralCode
);
return (address(_lendingPool), 0, callData);
}
/**
* Invoke deposit on LendingPool from SetToken
*
* Deposits an `_amountNotional` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. SetToken deposits 100 USDC and gets in return 100 aUSDC
* @param _setToken Address of the SetToken
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset to deposit
* @param _amountNotional The amount to be deposited
*/
function invokeDeposit(
ISetToken _setToken,
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional
)
external
{
( , , bytes memory depositCalldata) = getDepositCalldata(
_lendingPool,
_asset,
_amountNotional,
address(_setToken),
0
);
_setToken.invoke(address(_lendingPool), 0, depositCalldata);
}
/**
* Get withdraw calldata from SetToken
*
* Withdraws an `_amountNotional` of underlying asset from the reserve, burning the equivalent aTokens owned
* - E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset to withdraw
* @param _amountNotional The underlying amount to be withdrawn
* Note: Passing type(uint256).max will withdraw the entire aToken balance
* @param _receiver Address that will receive the underlying, same as msg.sender if the user
* wants to receive it on his own wallet, or a different address if the beneficiary is a
* different wallet
*
* @return address Target contract address
* @return uint256 Call value
* @return bytes Withdraw calldata
*/
function getWithdrawCalldata(
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional,
address _receiver
)
public
pure
returns (address, uint256, bytes memory)
{
bytes memory callData = abi.encodeWithSignature(
"withdraw(address,uint256,address)",
_asset,
_amountNotional,
_receiver
);
return (address(_lendingPool), 0, callData);
}
/**
* Invoke withdraw on LendingPool from SetToken
*
* Withdraws an `_amountNotional` of underlying asset from the reserve, burning the equivalent aTokens owned
* - E.g. SetToken has 100 aUSDC, and receives 100 USDC, burning the 100 aUSDC
*
* @param _setToken Address of the SetToken
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset to withdraw
* @param _amountNotional The underlying amount to be withdrawn
* Note: Passing type(uint256).max will withdraw the entire aToken balance
*
* @return uint256 The final amount withdrawn
*/
function invokeWithdraw(
ISetToken _setToken,
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional
)
external
returns (uint256)
{
( , , bytes memory withdrawCalldata) = getWithdrawCalldata(
_lendingPool,
_asset,
_amountNotional,
address(_setToken)
);
return abi.decode(_setToken.invoke(address(_lendingPool), 0, withdrawCalldata), (uint256));
}
/**
* Get borrow calldata from SetToken
*
* Allows users to borrow a specific `_amountNotional` of the reserve underlying `_asset`, provided that
* the borrower already deposited enough collateral, or he was given enough allowance by a credit delegator
* on the corresponding debt token (StableDebtToken or VariableDebtToken)
*
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset to borrow
* @param _amountNotional The amount to be borrowed
* @param _interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
* @param _referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
* @param _onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
* calling the function if he wants to borrow against his own collateral, or the address of the
* credit delegator if he has been given credit delegation allowance
*
* @return address Target contract address
* @return uint256 Call value
* @return bytes Borrow calldata
*/
function getBorrowCalldata(
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
)
public
pure
returns (address, uint256, bytes memory)
{
bytes memory callData = abi.encodeWithSignature(
"borrow(address,uint256,uint256,uint16,address)",
_asset,
_amountNotional,
_interestRateMode,
_referralCode,
_onBehalfOf
);
return (address(_lendingPool), 0, callData);
}
/**
* Invoke borrow on LendingPool from SetToken
*
* Allows SetToken to borrow a specific `_amountNotional` of the reserve underlying `_asset`, provided that
* the SetToken already deposited enough collateral, or it was given enough allowance by a credit delegator
* on the corresponding debt token (StableDebtToken or VariableDebtToken)
* @param _setToken Address of the SetToken
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset to borrow
* @param _amountNotional The amount to be borrowed
* @param _interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
*/
function invokeBorrow(
ISetToken _setToken,
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional,
uint256 _interestRateMode
)
external
{
( , , bytes memory borrowCalldata) = getBorrowCalldata(
_lendingPool,
_asset,
_amountNotional,
_interestRateMode,
0,
address(_setToken)
);
_setToken.invoke(address(_lendingPool), 0, borrowCalldata);
}
/**
* Get repay calldata from SetToken
*
* Repays a borrowed `_amountNotional` on a specific `_asset` reserve, burning the equivalent debt tokens owned
* - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the borrowed underlying asset previously borrowed
* @param _amountNotional The amount to repay
* Note: Passing type(uint256).max will repay the whole debt for `_asset` on the specific `_interestRateMode`
* @param _interestRateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
* @param _onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
*
* @return address Target contract address
* @return uint256 Call value
* @return bytes Repay calldata
*/
function getRepayCalldata(
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional,
uint256 _interestRateMode,
address _onBehalfOf
)
public
pure
returns (address, uint256, bytes memory)
{
bytes memory callData = abi.encodeWithSignature(
"repay(address,uint256,uint256,address)",
_asset,
_amountNotional,
_interestRateMode,
_onBehalfOf
);
return (address(_lendingPool), 0, callData);
}
/**
* Invoke repay on LendingPool from SetToken
*
* Repays a borrowed `_amountNotional` on a specific `_asset` reserve, burning the equivalent debt tokens owned
* - E.g. SetToken repays 100 USDC, burning 100 variable/stable debt tokens
* @param _setToken Address of the SetToken
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the borrowed underlying asset previously borrowed
* @param _amountNotional The amount to repay
* Note: Passing type(uint256).max will repay the whole debt for `_asset` on the specific `_interestRateMode`
* @param _interestRateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
*
* @return uint256 The final amount repaid
*/
function invokeRepay(
ISetToken _setToken,
ILendingPool _lendingPool,
address _asset,
uint256 _amountNotional,
uint256 _interestRateMode
)
external
returns (uint256)
{
( , , bytes memory repayCalldata) = getRepayCalldata(
_lendingPool,
_asset,
_amountNotional,
_interestRateMode,
address(_setToken)
);
return abi.decode(_setToken.invoke(address(_lendingPool), 0, repayCalldata), (uint256));
}
/**
* Get setUserUseReserveAsCollateral calldata from SetToken
*
* Allows borrower to enable/disable a specific deposited asset as collateral
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset deposited
* @param _useAsCollateral true` if the user wants to use the deposit as collateral, `false` otherwise
*
* @return address Target contract address
* @return uint256 Call value
* @return bytes SetUserUseReserveAsCollateral calldata
*/
function getSetUserUseReserveAsCollateralCalldata(
ILendingPool _lendingPool,
address _asset,
bool _useAsCollateral
)
public
pure
returns (address, uint256, bytes memory)
{
bytes memory callData = abi.encodeWithSignature(
"setUserUseReserveAsCollateral(address,bool)",
_asset,
_useAsCollateral
);
return (address(_lendingPool), 0, callData);
}
/**
* Invoke an asset to be used as collateral on Aave from SetToken
*
* Allows SetToken to enable/disable a specific deposited asset as collateral
* @param _setToken Address of the SetToken
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset deposited
* @param _useAsCollateral true` if the user wants to use the deposit as collateral, `false` otherwise
*/
function invokeSetUserUseReserveAsCollateral(
ISetToken _setToken,
ILendingPool _lendingPool,
address _asset,
bool _useAsCollateral
)
external
{
( , , bytes memory callData) = getSetUserUseReserveAsCollateralCalldata(
_lendingPool,
_asset,
_useAsCollateral
);
_setToken.invoke(address(_lendingPool), 0, callData);
}
/**
* Get swapBorrowRate calldata from SetToken
*
* Allows a borrower to toggle his debt between stable and variable mode
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset borrowed
* @param _rateMode The rate mode that the user wants to swap to
*
* @return address Target contract address
* @return uint256 Call value
* @return bytes SwapBorrowRate calldata
*/
function getSwapBorrowRateModeCalldata(
ILendingPool _lendingPool,
address _asset,
uint256 _rateMode
)
public
pure
returns (address, uint256, bytes memory)
{
bytes memory callData = abi.encodeWithSignature(
"swapBorrowRateMode(address,uint256)",
_asset,
_rateMode
);
return (address(_lendingPool), 0, callData);
}
/**
* Invoke to swap borrow rate of SetToken
*
* Allows SetToken to toggle it's debt between stable and variable mode
* @param _setToken Address of the SetToken
* @param _lendingPool Address of the LendingPool contract
* @param _asset The address of the underlying asset borrowed
* @param _rateMode The rate mode that the user wants to swap to
*/
function invokeSwapBorrowRateMode(
ISetToken _setToken,
ILendingPool _lendingPool,
address _asset,
uint256 _rateMode
)
external
{
( , , bytes memory callData) = getSwapBorrowRateModeCalldata(
_lendingPool,
_asset,
_rateMode
);
_setToken.invoke(address(_lendingPool), 0, callData);
}
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IAToken is IERC20 {
function UNDERLYING_ASSET_ADDRESS() external view returns (address);
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
interface IController {
function addSet(address _setToken) external;
function feeRecipient() external view returns(address);
function getModuleFee(address _module, uint256 _feeType) external view returns(uint256);
function isModule(address _module) external view returns(bool);
function isSet(address _setToken) external view returns(bool);
function isSystemContract(address _contractAddress) external view returns (bool);
function resourceId(uint256 _id) external view returns(address);
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { ISetToken } from "./ISetToken.sol";
/**
* @title IDebtIssuanceModule
* @author Set Protocol
*
* Interface for interacting with Debt Issuance module interface.
*/
interface IDebtIssuanceModule {
/**
* Called by another module to register itself on debt issuance module. Any logic can be included
* in case checks need to be made or state needs to be updated.
*/
function registerToIssuanceModule(ISetToken _setToken) external;
/**
* Called by another module to unregister itself on debt issuance module. Any logic can be included
* in case checks need to be made or state needs to be cleared.
*/
function unregisterFromIssuanceModule(ISetToken _setToken) external;
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
interface IExchangeAdapter {
function getSpender() external view returns(address);
function getTradeCalldata(
address _fromToken,
address _toToken,
address _toAddress,
uint256 _fromQuantity,
uint256 _minToQuantity,
bytes memory _data
)
external
view
returns (address, uint256, bytes memory);
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
import { ILendingPoolAddressesProvider } from "./ILendingPoolAddressesProvider.sol";
import { DataTypes } from "./lib/DataTypes.sol";
interface ILendingPool {
/**
* @dev Emitted on deposit()
* @param reserve The address of the underlying asset of the reserve
* @param user The address initiating the deposit
* @param onBehalfOf The beneficiary of the deposit, receiving the aTokens
* @param amount The amount deposited
* @param referral The referral code used
**/
event Deposit(
address indexed reserve,
address user,
address indexed onBehalfOf,
uint256 amount,
uint16 indexed referral
);
/**
* @dev Emitted on withdraw()
* @param reserve The address of the underlyng asset being withdrawn
* @param user The address initiating the withdrawal, owner of aTokens
* @param to Address that will receive the underlying
* @param amount The amount to be withdrawn
**/
event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount);
/**
* @dev Emitted on borrow() and flashLoan() when debt needs to be opened
* @param reserve The address of the underlying asset being borrowed
* @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just
* initiator of the transaction on flashLoan()
* @param onBehalfOf The address that will be getting the debt
* @param amount The amount borrowed out
* @param borrowRateMode The rate mode: 1 for Stable, 2 for Variable
* @param borrowRate The numeric rate at which the user has borrowed
* @param referral The referral code used
**/
event Borrow(
address indexed reserve,
address user,
address indexed onBehalfOf,
uint256 amount,
uint256 borrowRateMode,
uint256 borrowRate,
uint16 indexed referral
);
/**
* @dev Emitted on repay()
* @param reserve The address of the underlying asset of the reserve
* @param user The beneficiary of the repayment, getting his debt reduced
* @param repayer The address of the user initiating the repay(), providing the funds
* @param amount The amount repaid
**/
event Repay(
address indexed reserve,
address indexed user,
address indexed repayer,
uint256 amount
);
/**
* @dev Emitted on swapBorrowRateMode()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user swapping his rate mode
* @param rateMode The rate mode that the user wants to swap to
**/
event Swap(address indexed reserve, address indexed user, uint256 rateMode);
/**
* @dev Emitted on setUserUseReserveAsCollateral()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user enabling the usage as collateral
**/
event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user);
/**
* @dev Emitted on setUserUseReserveAsCollateral()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user enabling the usage as collateral
**/
event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user);
/**
* @dev Emitted on rebalanceStableBorrowRate()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user for which the rebalance has been executed
**/
event RebalanceStableBorrowRate(address indexed reserve, address indexed user);
/**
* @dev Emitted on flashLoan()
* @param target The address of the flash loan receiver contract
* @param initiator The address initiating the flash loan
* @param asset The address of the asset being flash borrowed
* @param amount The amount flash borrowed
* @param premium The fee flash borrowed
* @param referralCode The referral code used
**/
event FlashLoan(
address indexed target,
address indexed initiator,
address indexed asset,
uint256 amount,
uint256 premium,
uint16 referralCode
);
/**
* @dev Emitted when the pause is triggered.
*/
event Paused();
/**
* @dev Emitted when the pause is lifted.
*/
event Unpaused();
/**
* @dev Emitted when a borrower is liquidated. This event is emitted by the LendingPool via
* LendingPoolCollateral manager using a DELEGATECALL
* This allows to have the events in the generated ABI for LendingPool.
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param liquidatedCollateralAmount The amount of collateral received by the liiquidator
* @param liquidator The address of the liquidator
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
event LiquidationCall(
address indexed collateralAsset,
address indexed debtAsset,
address indexed user,
uint256 debtToCover,
uint256 liquidatedCollateralAmount,
address liquidator,
bool receiveAToken
);
/**
* @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared
* in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal,
* the event will actually be fired by the LendingPool contract. The event is therefore replicated here so it
* gets added to the LendingPool ABI
* @param reserve The address of the underlying asset of the reserve
* @param liquidityRate The new liquidity rate
* @param stableBorrowRate The new stable borrow rate
* @param variableBorrowRate The new variable borrow rate
* @param liquidityIndex The new liquidity index
* @param variableBorrowIndex The new variable borrow index
**/
event ReserveDataUpdated(
address indexed reserve,
uint256 liquidityRate,
uint256 stableBorrowRate,
uint256 variableBorrowRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex
);
/**
* @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. User deposits 100 USDC and gets in return 100 aUSDC
* @param asset The address of the underlying asset to deposit
* @param amount The amount to be deposited
* @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
* wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
* is a different wallet
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function deposit(
address asset,
uint256 amount,
address onBehalfOf,
uint16 referralCode
) external;
/**
* @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
* E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
* @param asset The address of the underlying asset to withdraw
* @param amount The underlying amount to be withdrawn
* - Send the value type(uint256).max in order to withdraw the whole aToken balance
* @param to Address that will receive the underlying, same as msg.sender if the user
* wants to receive it on his own wallet, or a different address if the beneficiary is a
* different wallet
* @return The final amount withdrawn
**/
function withdraw(
address asset,
uint256 amount,
address to
) external returns (uint256);
/**
* @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
* already deposited enough collateral, or he was given enough allowance by a credit delegator on the
* corresponding debt token (StableDebtToken or VariableDebtToken)
* - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
* and 100 stable/variable debt tokens, depending on the `interestRateMode`
* @param asset The address of the underlying asset to borrow
* @param amount The amount to be borrowed
* @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
* @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
* calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
* if he has been given credit delegation allowance
**/
function borrow(
address asset,
uint256 amount,
uint256 interestRateMode,
uint16 referralCode,
address onBehalfOf
) external;
/**
* @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
* - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
* @param asset The address of the borrowed underlying asset previously borrowed
* @param amount The amount to repay
* - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
* @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
* @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
* @return The final amount repaid
**/
function repay(
address asset,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) external returns (uint256);
/**
* @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
* @param asset The address of the underlying asset borrowed
* @param rateMode The rate mode that the user wants to swap to
**/
function swapBorrowRateMode(address asset, uint256 rateMode) external;
/**
* @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
* - Users can be rebalanced if the following conditions are satisfied:
* 1. Usage ratio is above 95%
* 2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
* borrowed at a stable rate and depositors are not earning enough
* @param asset The address of the underlying asset borrowed
* @param user The address of the user to be rebalanced
**/
function rebalanceStableBorrowRate(address asset, address user) external;
/**
* @dev Allows depositors to enable/disable a specific deposited asset as collateral
* @param asset The address of the underlying asset deposited
* @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
**/
function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external;
/**
* @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
* - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
function liquidationCall(
address collateralAsset,
address debtAsset,
address user,
uint256 debtToCover,
bool receiveAToken
) external;
/**
* @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned.
* IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
* For further details please visit https://developers.aave.com
* @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
* @param assets The addresses of the assets being flash-borrowed
* @param amounts The amounts amounts being flash-borrowed
* @param modes Types of the debt to open if the flash loan is not returned:
* 0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
* 1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* 2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* @param onBehalfOf The address that will receive the debt in the case of using on `modes` 1 or 2
* @param params Variadic packed params to pass to the receiver as extra information
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function flashLoan(
address receiverAddress,
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata modes,
address onBehalfOf,
bytes calldata params,
uint16 referralCode
) external;
/**
* @dev Returns the user account data across all the reserves
* @param user The address of the user
* @return totalCollateralETH the total collateral in ETH of the user
* @return totalDebtETH the total debt in ETH of the user
* @return availableBorrowsETH the borrowing power left of the user
* @return currentLiquidationThreshold the liquidation threshold of the user
* @return ltv the loan to value of the user
* @return healthFactor the current health factor of the user
**/
function getUserAccountData(address user)
external
view
returns (
uint256 totalCollateralETH,
uint256 totalDebtETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
);
function initReserve(
address reserve,
address aTokenAddress,
address stableDebtAddress,
address variableDebtAddress,
address interestRateStrategyAddress
) external;
function setReserveInterestRateStrategyAddress(address reserve, address rateStrategyAddress)
external;
function setConfiguration(address reserve, uint256 configuration) external;
/**
* @dev Returns the configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The configuration of the reserve
**/
function getConfiguration(address asset)
external
view
returns (DataTypes.ReserveConfigurationMap memory);
/**
* @dev Returns the configuration of the user across all the reserves
* @param user The user address
* @return The configuration of the user
**/
function getUserConfiguration(address user)
external
view
returns (DataTypes.UserConfigurationMap memory);
/**
* @dev Returns the normalized income normalized income of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The reserve's normalized income
*/
function getReserveNormalizedIncome(address asset) external view returns (uint256);
/**
* @dev Returns the normalized variable debt per unit of asset
* @param asset The address of the underlying asset of the reserve
* @return The reserve normalized variable debt
*/
function getReserveNormalizedVariableDebt(address asset) external view returns (uint256);
/**
* @dev Returns the state and configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The state of the reserve
**/
function getReserveData(address asset) external view returns (DataTypes.ReserveData memory);
function finalizeTransfer(
address asset,
address from,
address to,
uint256 amount,
uint256 balanceFromAfter,
uint256 balanceToBefore
) external;
function getReservesList() external view returns (address[] memory);
function getAddressesProvider() external view returns (ILendingPoolAddressesProvider);
function setPause(bool val) external;
function paused() external view returns (bool);
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
/**
* @title LendingPoolAddressesProvider contract
* @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
* - Acting also as factory of proxies and admin of those, so with right to change its implementations
* - Owned by the Aave Governance
* @author Aave
**/
interface ILendingPoolAddressesProvider {
event MarketIdSet(string newMarketId);
event LendingPoolUpdated(address indexed newAddress);
event ConfigurationAdminUpdated(address indexed newAddress);
event EmergencyAdminUpdated(address indexed newAddress);
event LendingPoolConfiguratorUpdated(address indexed newAddress);
event LendingPoolCollateralManagerUpdated(address indexed newAddress);
event PriceOracleUpdated(address indexed newAddress);
event LendingRateOracleUpdated(address indexed newAddress);
event ProxyCreated(bytes32 id, address indexed newAddress);
event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);
function getMarketId() external view returns (string memory);
function setMarketId(string calldata marketId) external;
function setAddress(bytes32 id, address newAddress) external;
function setAddressAsProxy(bytes32 id, address impl) external;
function getAddress(bytes32 id) external view returns (address);
function getLendingPool() external view returns (address);
function setLendingPoolImpl(address pool) external;
function getLendingPoolConfigurator() external view returns (address);
function setLendingPoolConfiguratorImpl(address configurator) external;
function getLendingPoolCollateralManager() external view returns (address);
function setLendingPoolCollateralManager(address manager) external;
function getPoolAdmin() external view returns (address);
function setPoolAdmin(address admin) external;
function getEmergencyAdmin() external view returns (address);
function setEmergencyAdmin(address admin) external;
function getPriceOracle() external view returns (address);
function setPriceOracle(address priceOracle) external;
function getLendingRateOracle() external view returns (address);
function setLendingRateOracle(address lendingRateOracle) external;
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { ISetToken } from "./ISetToken.sol";
/**
* CHANGELOG:
* - Added a module level issue hook that can be used to set state ahead of component level
* issue hooks
*/
interface IModuleIssuanceHook {
function moduleIssueHook(ISetToken _setToken, uint256 _setTokenQuantity) external;
function moduleRedeemHook(ISetToken _setToken, uint256 _setTokenQuantity) external;
function componentIssueHook(
ISetToken _setToken,
uint256 _setTokenQuantity,
IERC20 _component,
bool _isEquity
) external;
function componentRedeemHook(
ISetToken _setToken,
uint256 _setTokenQuantity,
IERC20 _component,
bool _isEquity
) external;
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
import { ILendingPoolAddressesProvider } from "./ILendingPoolAddressesProvider.sol";
interface IProtocolDataProvider {
struct TokenData {
string symbol;
address tokenAddress;
}
function ADDRESSES_PROVIDER() external view returns (ILendingPoolAddressesProvider);
function getAllReservesTokens() external view returns (TokenData[] memory);
function getAllATokens() external view returns (TokenData[] memory);
function getReserveConfigurationData(address asset) external view returns (uint256 decimals, uint256 ltv, uint256 liquidationThreshold, uint256 liquidationBonus, uint256 reserveFactor, bool usageAsCollateralEnabled, bool borrowingEnabled, bool stableBorrowRateEnabled, bool isActive, bool isFrozen);
function getReserveData(address asset) external view returns (uint256 availableLiquidity, uint256 totalStableDebt, uint256 totalVariableDebt, uint256 liquidityRate, uint256 variableBorrowRate, uint256 stableBorrowRate, uint256 averageStableBorrowRate, uint256 liquidityIndex, uint256 variableBorrowIndex, uint40 lastUpdateTimestamp);
function getUserReserveData(address asset, address user) external view returns (uint256 currentATokenBalance, uint256 currentStableDebt, uint256 currentVariableDebt, uint256 principalStableDebt, uint256 scaledVariableDebt, uint256 stableBorrowRate, uint256 liquidityRate, uint40 stableRateLastUpdated, bool usageAsCollateralEnabled);
function getReserveTokensAddresses(address asset) external view returns (address aTokenAddress, address stableDebtTokenAddress, address variableDebtTokenAddress);
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
/**
* @title ISetToken
* @author Set Protocol
*
* Interface for operating with SetTokens.
*/
interface ISetToken is IERC20 {
/* ============ Enums ============ */
enum ModuleState {
NONE,
PENDING,
INITIALIZED
}
/* ============ Structs ============ */
/**
* The base definition of a SetToken Position
*
* @param component Address of token in the Position
* @param module If not in default state, the address of associated module
* @param unit Each unit is the # of components per 10^18 of a SetToken
* @param positionState Position ENUM. Default is 0; External is 1
* @param data Arbitrary data
*/
struct Position {
address component;
address module;
int256 unit;
uint8 positionState;
bytes data;
}
/**
* A struct that stores a component's cash position details and external positions
* This data structure allows O(1) access to a component's cash position units and
* virtual units.
*
* @param virtualUnit Virtual value of a component's DEFAULT position. Stored as virtual for efficiency
* updating all units at once via the position multiplier. Virtual units are achieved
* by dividing a "real" value by the "positionMultiplier"
* @param componentIndex
* @param externalPositionModules List of external modules attached to each external position. Each module
* maps to an external position
* @param externalPositions Mapping of module => ExternalPosition struct for a given component
*/
struct ComponentPosition {
int256 virtualUnit;
address[] externalPositionModules;
mapping(address => ExternalPosition) externalPositions;
}
/**
* A struct that stores a component's external position details including virtual unit and any
* auxiliary data.
*
* @param virtualUnit Virtual value of a component's EXTERNAL position.
* @param data Arbitrary data
*/
struct ExternalPosition {
int256 virtualUnit;
bytes data;
}
/* ============ Functions ============ */
function addComponent(address _component) external;
function removeComponent(address _component) external;
function editDefaultPositionUnit(address _component, int256 _realUnit) external;
function addExternalPositionModule(address _component, address _positionModule) external;
function removeExternalPositionModule(address _component, address _positionModule) external;
function editExternalPositionUnit(address _component, address _positionModule, int256 _realUnit) external;
function editExternalPositionData(address _component, address _positionModule, bytes calldata _data) external;
function invoke(address _target, uint256 _value, bytes calldata _data) external returns(bytes memory);
function editPositionMultiplier(int256 _newMultiplier) external;
function mint(address _account, uint256 _quantity) external;
function burn(address _account, uint256 _quantity) external;
function lock() external;
function unlock() external;
function addModule(address _module) external;
function removeModule(address _module) external;
function initializeModule() external;
function setManager(address _manager) external;
function manager() external view returns (address);
function moduleStates(address _module) external view returns (ModuleState);
function getModules() external view returns (address[] memory);
function getDefaultPositionRealUnit(address _component) external view returns(int256);
function getExternalPositionRealUnit(address _component, address _positionModule) external view returns(int256);
function getComponents() external view returns(address[] memory);
function getExternalPositionModules(address _component) external view returns(address[] memory);
function getExternalPositionData(address _component, address _positionModule) external view returns(bytes memory);
function isExternalPositionModule(address _component, address _module) external view returns(bool);
function isComponent(address _component) external view returns(bool);
function positionMultiplier() external view returns (int256);
function getPositions() external view returns (Position[] memory);
function getTotalComponentRealUnits(address _component) external view returns(int256);
function isInitializedModule(address _module) external view returns(bool);
function isPendingModule(address _module) external view returns(bool);
function isLocked() external view returns (bool);
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
/**
* @title IVariableDebtToken
* @author Aave
* @notice Defines the basic interface for a variable debt token.
**/
interface IVariableDebtToken is IERC20 {}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { AddressArrayUtils } from "../../lib/AddressArrayUtils.sol";
import { ExplicitERC20 } from "../../lib/ExplicitERC20.sol";
import { IController } from "../../interfaces/IController.sol";
import { IModule } from "../../interfaces/IModule.sol";
import { ISetToken } from "../../interfaces/ISetToken.sol";
import { Invoke } from "./Invoke.sol";
import { Position } from "./Position.sol";
import { PreciseUnitMath } from "../../lib/PreciseUnitMath.sol";
import { ResourceIdentifier } from "./ResourceIdentifier.sol";
import { SafeCast } from "@openzeppelin/contracts/utils/SafeCast.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { SignedSafeMath } from "@openzeppelin/contracts/math/SignedSafeMath.sol";
/**
* @title ModuleBase
* @author Set Protocol
*
* Abstract class that houses common Module-related state and functions.
*
* CHANGELOG:
* - 4/21/21: Delegated modifier logic to internal helpers to reduce contract size
*
*/
abstract contract ModuleBase is IModule {
using AddressArrayUtils for address[];
using Invoke for ISetToken;
using Position for ISetToken;
using PreciseUnitMath for uint256;
using ResourceIdentifier for IController;
using SafeCast for int256;
using SafeCast for uint256;
using SafeMath for uint256;
using SignedSafeMath for int256;
/* ============ State Variables ============ */
// Address of the controller
IController public controller;
/* ============ Modifiers ============ */
modifier onlyManagerAndValidSet(ISetToken _setToken) {
_validateOnlyManagerAndValidSet(_setToken);
_;
}
modifier onlySetManager(ISetToken _setToken, address _caller) {
_validateOnlySetManager(_setToken, _caller);
_;
}
modifier onlyValidAndInitializedSet(ISetToken _setToken) {
_validateOnlyValidAndInitializedSet(_setToken);
_;
}
/**
* Throws if the sender is not a SetToken's module or module not enabled
*/
modifier onlyModule(ISetToken _setToken) {
_validateOnlyModule(_setToken);
_;
}
/**
* Utilized during module initializations to check that the module is in pending state
* and that the SetToken is valid
*/
modifier onlyValidAndPendingSet(ISetToken _setToken) {
_validateOnlyValidAndPendingSet(_setToken);
_;
}
/* ============ Constructor ============ */
/**
* Set state variables and map asset pairs to their oracles
*
* @param _controller Address of controller contract
*/
constructor(IController _controller) public {
controller = _controller;
}
/* ============ Internal Functions ============ */
/**
* Transfers tokens from an address (that has set allowance on the module).
*
* @param _token The address of the ERC20 token
* @param _from The address to transfer from
* @param _to The address to transfer to
* @param _quantity The number of tokens to transfer
*/
function transferFrom(IERC20 _token, address _from, address _to, uint256 _quantity) internal {
ExplicitERC20.transferFrom(_token, _from, _to, _quantity);
}
/**
* Gets the integration for the module with the passed in name. Validates that the address is not empty
*/
function getAndValidateAdapter(string memory _integrationName) internal view returns(address) {
bytes32 integrationHash = getNameHash(_integrationName);
return getAndValidateAdapterWithHash(integrationHash);
}
/**
* Gets the integration for the module with the passed in hash. Validates that the address is not empty
*/
function getAndValidateAdapterWithHash(bytes32 _integrationHash) internal view returns(address) {
address adapter = controller.getIntegrationRegistry().getIntegrationAdapterWithHash(
address(this),
_integrationHash
);
require(adapter != address(0), "Must be valid adapter");
return adapter;
}
/**
* Gets the total fee for this module of the passed in index (fee % * quantity)
*/
function getModuleFee(uint256 _feeIndex, uint256 _quantity) internal view returns(uint256) {
uint256 feePercentage = controller.getModuleFee(address(this), _feeIndex);
return _quantity.preciseMul(feePercentage);
}
/**
* Pays the _feeQuantity from the _setToken denominated in _token to the protocol fee recipient
*/
function payProtocolFeeFromSetToken(ISetToken _setToken, address _token, uint256 _feeQuantity) internal {
if (_feeQuantity > 0) {
_setToken.strictInvokeTransfer(_token, controller.feeRecipient(), _feeQuantity);
}
}
/**
* Returns true if the module is in process of initialization on the SetToken
*/
function isSetPendingInitialization(ISetToken _setToken) internal view returns(bool) {
return _setToken.isPendingModule(address(this));
}
/**
* Returns true if the address is the SetToken's manager
*/
function isSetManager(ISetToken _setToken, address _toCheck) internal view returns(bool) {
return _setToken.manager() == _toCheck;
}
/**
* Returns true if SetToken must be enabled on the controller
* and module is registered on the SetToken
*/
function isSetValidAndInitialized(ISetToken _setToken) internal view returns(bool) {
return controller.isSet(address(_setToken)) &&
_setToken.isInitializedModule(address(this));
}
/**
* Hashes the string and returns a bytes32 value
*/
function getNameHash(string memory _name) internal pure returns(bytes32) {
return keccak256(bytes(_name));
}
/* ============== Modifier Helpers ===============
* Internal functions used to reduce bytecode size
*/
/**
* Caller must SetToken manager and SetToken must be valid and initialized
*/
function _validateOnlyManagerAndValidSet(ISetToken _setToken) internal view {
require(isSetManager(_setToken, msg.sender), "Must be the SetToken manager");
require(isSetValidAndInitialized(_setToken), "Must be a valid and initialized SetToken");
}
/**
* Caller must SetToken manager
*/
function _validateOnlySetManager(ISetToken _setToken, address _caller) internal view {
require(isSetManager(_setToken, _caller), "Must be the SetToken manager");
}
/**
* SetToken must be valid and initialized
*/
function _validateOnlyValidAndInitializedSet(ISetToken _setToken) internal view {
require(isSetValidAndInitialized(_setToken), "Must be a valid and initialized SetToken");
}
/**
* Caller must be initialized module and module must be enabled on the controller
*/
function _validateOnlyModule(ISetToken _setToken) internal view {
require(
_setToken.moduleStates(msg.sender) == ISetToken.ModuleState.INITIALIZED,
"Only the module can call"
);
require(
controller.isModule(msg.sender),
"Module must be enabled on controller"
);
}
/**
* SetToken must be in a pending state and module must be in pending state
*/
function _validateOnlyValidAndPendingSet(ISetToken _setToken) internal view {
require(controller.isSet(address(_setToken)), "Must be controller-enabled SetToken");
require(isSetPendingInitialization(_setToken), "Must be pending initialization");
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
library DataTypes {
// refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
struct ReserveData {
//stores the reserve configuration
ReserveConfigurationMap configuration;
//the liquidity index. Expressed in ray
uint128 liquidityIndex;
//variable borrow index. Expressed in ray
uint128 variableBorrowIndex;
//the current supply rate. Expressed in ray
uint128 currentLiquidityRate;
//the current variable borrow rate. Expressed in ray
uint128 currentVariableBorrowRate;
//the current stable borrow rate. Expressed in ray
uint128 currentStableBorrowRate;
uint40 lastUpdateTimestamp;
//tokens addresses
address aTokenAddress;
address stableDebtTokenAddress;
address variableDebtTokenAddress;
//address of the interest rate strategy
address interestRateStrategyAddress;
//the id of the reserve. Represents the position in the list of the active reserves
uint8 id;
}
struct ReserveConfigurationMap {
//bit 0-15: LTV
//bit 16-31: Liq. threshold
//bit 32-47: Liq. bonus
//bit 48-55: Decimals
//bit 56: Reserve is active
//bit 57: reserve is frozen
//bit 58: borrowing is enabled
//bit 59: stable rate borrowing enabled
//bit 60-63: reserved
//bit 64-79: reserve factor
uint256 data;
}
struct UserConfigurationMap {
uint256 data;
}
enum InterestRateMode {NONE, STABLE, VARIABLE}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
/**
* @title AddressArrayUtils
* @author Set Protocol
*
* Utility functions to handle Address Arrays
*
* CHANGELOG:
* - 4/21/21: Added validatePairsWithArray methods
*/
library AddressArrayUtils {
/**
* Finds the index of the first occurrence of the given element.
* @param A The input array to search
* @param a The value to find
* @return Returns (index and isIn) for the first occurrence starting from index 0
*/
function indexOf(address[] memory A, address a) internal pure returns (uint256, bool) {
uint256 length = A.length;
for (uint256 i = 0; i < length; i++) {
if (A[i] == a) {
return (i, true);
}
}
return (uint256(-1), false);
}
/**
* Returns true if the value is present in the list. Uses indexOf internally.
* @param A The input array to search
* @param a The value to find
* @return Returns isIn for the first occurrence starting from index 0
*/
function contains(address[] memory A, address a) internal pure returns (bool) {
(, bool isIn) = indexOf(A, a);
return isIn;
}
/**
* Returns true if there are 2 elements that are the same in an array
* @param A The input array to search
* @return Returns boolean for the first occurrence of a duplicate
*/
function hasDuplicate(address[] memory A) internal pure returns(bool) {
require(A.length > 0, "A is empty");
for (uint256 i = 0; i < A.length - 1; i++) {
address current = A[i];
for (uint256 j = i + 1; j < A.length; j++) {
if (current == A[j]) {
return true;
}
}
}
return false;
}
/**
* @param A The input array to search
* @param a The address to remove
* @return Returns the array with the object removed.
*/
function remove(address[] memory A, address a)
internal
pure
returns (address[] memory)
{
(uint256 index, bool isIn) = indexOf(A, a);
if (!isIn) {
revert("Address not in array.");
} else {
(address[] memory _A,) = pop(A, index);
return _A;
}
}
/**
* @param A The input array to search
* @param a The address to remove
*/
function removeStorage(address[] storage A, address a)
internal
{
(uint256 index, bool isIn) = indexOf(A, a);
if (!isIn) {
revert("Address not in array.");
} else {
uint256 lastIndex = A.length - 1; // If the array would be empty, the previous line would throw, so no underflow here
if (index != lastIndex) { A[index] = A[lastIndex]; }
A.pop();
}
}
/**
* Removes specified index from array
* @param A The input array to search
* @param index The index to remove
* @return Returns the new array and the removed entry
*/
function pop(address[] memory A, uint256 index)
internal
pure
returns (address[] memory, address)
{
uint256 length = A.length;
require(index < A.length, "Index must be < A length");
address[] memory newAddresses = new address[](length - 1);
for (uint256 i = 0; i < index; i++) {
newAddresses[i] = A[i];
}
for (uint256 j = index + 1; j < length; j++) {
newAddresses[j - 1] = A[j];
}
return (newAddresses, A[index]);
}
/**
* Returns the combination of the two arrays
* @param A The first array
* @param B The second array
* @return Returns A extended by B
*/
function extend(address[] memory A, address[] memory B) internal pure returns (address[] memory) {
uint256 aLength = A.length;
uint256 bLength = B.length;
address[] memory newAddresses = new address[](aLength + bLength);
for (uint256 i = 0; i < aLength; i++) {
newAddresses[i] = A[i];
}
for (uint256 j = 0; j < bLength; j++) {
newAddresses[aLength + j] = B[j];
}
return newAddresses;
}
/**
* Validate that address and uint array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of uint
*/
function validatePairsWithArray(address[] memory A, uint[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and bool array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of bool
*/
function validatePairsWithArray(address[] memory A, bool[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and string array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of strings
*/
function validatePairsWithArray(address[] memory A, string[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address array lengths match, and calling address array are not empty
* and contain no duplicate elements.
*
* @param A Array of addresses
* @param B Array of addresses
*/
function validatePairsWithArray(address[] memory A, address[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and bytes array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of bytes
*/
function validatePairsWithArray(address[] memory A, bytes[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate address array is not empty and contains no duplicate elements.
*
* @param A Array of addresses
*/
function _validateLengthAndUniqueness(address[] memory A) internal pure {
require(A.length > 0, "Array length must be > 0");
require(!hasDuplicate(A), "Cannot duplicate addresses");
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
/**
* @title ExplicitERC20
* @author Set Protocol
*
* Utility functions for ERC20 transfers that require the explicit amount to be transferred.
*/
library ExplicitERC20 {
using SafeMath for uint256;
/**
* When given allowance, transfers a token from the "_from" to the "_to" of quantity "_quantity".
* Ensures that the recipient has received the correct quantity (ie no fees taken on transfer)
*
* @param _token ERC20 token to approve
* @param _from The account to transfer tokens from
* @param _to The account to transfer tokens to
* @param _quantity The quantity to transfer
*/
function transferFrom(
IERC20 _token,
address _from,
address _to,
uint256 _quantity
)
internal
{
// Call specified ERC20 contract to transfer tokens (via proxy).
if (_quantity > 0) {
uint256 existingBalance = _token.balanceOf(_to);
SafeERC20.safeTransferFrom(
_token,
_from,
_to,
_quantity
);
uint256 newBalance = _token.balanceOf(_to);
// Verify transfer quantity is reflected in balance
require(
newBalance == existingBalance.add(_quantity),
"Invalid post transfer balance"
);
}
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
/**
* @title IModule
* @author Set Protocol
*
* Interface for interacting with Modules.
*/
interface IModule {
/**
* Called by a SetToken to notify that this module was removed from the Set token. Any logic can be included
* in case checks need to be made or state needs to be cleared.
*/
function removeModule() external;
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { ISetToken } from "../../interfaces/ISetToken.sol";
/**
* @title Invoke
* @author Set Protocol
*
* A collection of common utility functions for interacting with the SetToken's invoke function
*/
library Invoke {
using SafeMath for uint256;
/* ============ Internal ============ */
/**
* Instructs the SetToken to set approvals of the ERC20 token to a spender.
*
* @param _setToken SetToken instance to invoke
* @param _token ERC20 token to approve
* @param _spender The account allowed to spend the SetToken's balance
* @param _quantity The quantity of allowance to allow
*/
function invokeApprove(
ISetToken _setToken,
address _token,
address _spender,
uint256 _quantity
)
internal
{
bytes memory callData = abi.encodeWithSignature("approve(address,uint256)", _spender, _quantity);
_setToken.invoke(_token, 0, callData);
}
/**
* Instructs the SetToken to transfer the ERC20 token to a recipient.
*
* @param _setToken SetToken instance to invoke
* @param _token ERC20 token to transfer
* @param _to The recipient account
* @param _quantity The quantity to transfer
*/
function invokeTransfer(
ISetToken _setToken,
address _token,
address _to,
uint256 _quantity
)
internal
{
if (_quantity > 0) {
bytes memory callData = abi.encodeWithSignature("transfer(address,uint256)", _to, _quantity);
_setToken.invoke(_token, 0, callData);
}
}
/**
* Instructs the SetToken to transfer the ERC20 token to a recipient.
* The new SetToken balance must equal the existing balance less the quantity transferred
*
* @param _setToken SetToken instance to invoke
* @param _token ERC20 token to transfer
* @param _to The recipient account
* @param _quantity The quantity to transfer
*/
function strictInvokeTransfer(
ISetToken _setToken,
address _token,
address _to,
uint256 _quantity
)
internal
{
if (_quantity > 0) {
// Retrieve current balance of token for the SetToken
uint256 existingBalance = IERC20(_token).balanceOf(address(_setToken));
Invoke.invokeTransfer(_setToken, _token, _to, _quantity);
// Get new balance of transferred token for SetToken
uint256 newBalance = IERC20(_token).balanceOf(address(_setToken));
// Verify only the transfer quantity is subtracted
require(
newBalance == existingBalance.sub(_quantity),
"Invalid post transfer balance"
);
}
}
/**
* Instructs the SetToken to unwrap the passed quantity of WETH
*
* @param _setToken SetToken instance to invoke
* @param _weth WETH address
* @param _quantity The quantity to unwrap
*/
function invokeUnwrapWETH(ISetToken _setToken, address _weth, uint256 _quantity) internal {
bytes memory callData = abi.encodeWithSignature("withdraw(uint256)", _quantity);
_setToken.invoke(_weth, 0, callData);
}
/**
* Instructs the SetToken to wrap the passed quantity of ETH
*
* @param _setToken SetToken instance to invoke
* @param _weth WETH address
* @param _quantity The quantity to unwrap
*/
function invokeWrapWETH(ISetToken _setToken, address _weth, uint256 _quantity) internal {
bytes memory callData = abi.encodeWithSignature("deposit()");
_setToken.invoke(_weth, _quantity, callData);
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeCast } from "@openzeppelin/contracts/utils/SafeCast.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { SignedSafeMath } from "@openzeppelin/contracts/math/SignedSafeMath.sol";
import { ISetToken } from "../../interfaces/ISetToken.sol";
import { PreciseUnitMath } from "../../lib/PreciseUnitMath.sol";
/**
* @title Position
* @author Set Protocol
*
* Collection of helper functions for handling and updating SetToken Positions
*
* CHANGELOG:
* - Updated editExternalPosition to work when no external position is associated with module
*/
library Position {
using SafeCast for uint256;
using SafeMath for uint256;
using SafeCast for int256;
using SignedSafeMath for int256;
using PreciseUnitMath for uint256;
/* ============ Helper ============ */
/**
* Returns whether the SetToken has a default position for a given component (if the real unit is > 0)
*/
function hasDefaultPosition(ISetToken _setToken, address _component) internal view returns(bool) {
return _setToken.getDefaultPositionRealUnit(_component) > 0;
}
/**
* Returns whether the SetToken has an external position for a given component (if # of position modules is > 0)
*/
function hasExternalPosition(ISetToken _setToken, address _component) internal view returns(bool) {
return _setToken.getExternalPositionModules(_component).length > 0;
}
/**
* Returns whether the SetToken component default position real unit is greater than or equal to units passed in.
*/
function hasSufficientDefaultUnits(ISetToken _setToken, address _component, uint256 _unit) internal view returns(bool) {
return _setToken.getDefaultPositionRealUnit(_component) >= _unit.toInt256();
}
/**
* Returns whether the SetToken component external position is greater than or equal to the real units passed in.
*/
function hasSufficientExternalUnits(
ISetToken _setToken,
address _component,
address _positionModule,
uint256 _unit
)
internal
view
returns(bool)
{
return _setToken.getExternalPositionRealUnit(_component, _positionModule) >= _unit.toInt256();
}
/**
* If the position does not exist, create a new Position and add to the SetToken. If it already exists,
* then set the position units. If the new units is 0, remove the position. Handles adding/removing of
* components where needed (in light of potential external positions).
*
* @param _setToken Address of SetToken being modified
* @param _component Address of the component
* @param _newUnit Quantity of Position units - must be >= 0
*/
function editDefaultPosition(ISetToken _setToken, address _component, uint256 _newUnit) internal {
bool isPositionFound = hasDefaultPosition(_setToken, _component);
if (!isPositionFound && _newUnit > 0) {
// If there is no Default Position and no External Modules, then component does not exist
if (!hasExternalPosition(_setToken, _component)) {
_setToken.addComponent(_component);
}
} else if (isPositionFound && _newUnit == 0) {
// If there is a Default Position and no external positions, remove the component
if (!hasExternalPosition(_setToken, _component)) {
_setToken.removeComponent(_component);
}
}
_setToken.editDefaultPositionUnit(_component, _newUnit.toInt256());
}
/**
* Update an external position and remove and external positions or components if necessary. The logic flows as follows:
* 1) If component is not already added then add component and external position.
* 2) If component is added but no existing external position using the passed module exists then add the external position.
* 3) If the existing position is being added to then just update the unit and data
* 4) If the position is being closed and no other external positions or default positions are associated with the component
* then untrack the component and remove external position.
* 5) If the position is being closed and other existing positions still exist for the component then just remove the
* external position.
*
* @param _setToken SetToken being updated
* @param _component Component position being updated
* @param _module Module external position is associated with
* @param _newUnit Position units of new external position
* @param _data Arbitrary data associated with the position
*/
function editExternalPosition(
ISetToken _setToken,
address _component,
address _module,
int256 _newUnit,
bytes memory _data
)
internal
{
if (_newUnit != 0) {
if (!_setToken.isComponent(_component)) {
_setToken.addComponent(_component);
_setToken.addExternalPositionModule(_component, _module);
} else if (!_setToken.isExternalPositionModule(_component, _module)) {
_setToken.addExternalPositionModule(_component, _module);
}
_setToken.editExternalPositionUnit(_component, _module, _newUnit);
_setToken.editExternalPositionData(_component, _module, _data);
} else {
require(_data.length == 0, "Passed data must be null");
// If no default or external position remaining then remove component from components array
if (_setToken.getExternalPositionRealUnit(_component, _module) != 0) {
address[] memory positionModules = _setToken.getExternalPositionModules(_component);
if (_setToken.getDefaultPositionRealUnit(_component) == 0 && positionModules.length == 1) {
require(positionModules[0] == _module, "External positions must be 0 to remove component");
_setToken.removeComponent(_component);
}
_setToken.removeExternalPositionModule(_component, _module);
}
}
}
/**
* Get total notional amount of Default position
*
* @param _setTokenSupply Supply of SetToken in precise units (10^18)
* @param _positionUnit Quantity of Position units
*
* @return Total notional amount of units
*/
function getDefaultTotalNotional(uint256 _setTokenSupply, uint256 _positionUnit) internal pure returns (uint256) {
return _setTokenSupply.preciseMul(_positionUnit);
}
/**
* Get position unit from total notional amount
*
* @param _setTokenSupply Supply of SetToken in precise units (10^18)
* @param _totalNotional Total notional amount of component prior to
* @return Default position unit
*/
function getDefaultPositionUnit(uint256 _setTokenSupply, uint256 _totalNotional) internal pure returns (uint256) {
return _totalNotional.preciseDiv(_setTokenSupply);
}
/**
* Get the total tracked balance - total supply * position unit
*
* @param _setToken Address of the SetToken
* @param _component Address of the component
* @return Notional tracked balance
*/
function getDefaultTrackedBalance(ISetToken _setToken, address _component) internal view returns(uint256) {
int256 positionUnit = _setToken.getDefaultPositionRealUnit(_component);
return _setToken.totalSupply().preciseMul(positionUnit.toUint256());
}
/**
* Calculates the new default position unit and performs the edit with the new unit
*
* @param _setToken Address of the SetToken
* @param _component Address of the component
* @param _setTotalSupply Current SetToken supply
* @param _componentPreviousBalance Pre-action component balance
* @return Current component balance
* @return Previous position unit
* @return New position unit
*/
function calculateAndEditDefaultPosition(
ISetToken _setToken,
address _component,
uint256 _setTotalSupply,
uint256 _componentPreviousBalance
)
internal
returns(uint256, uint256, uint256)
{
uint256 currentBalance = IERC20(_component).balanceOf(address(_setToken));
uint256 positionUnit = _setToken.getDefaultPositionRealUnit(_component).toUint256();
uint256 newTokenUnit;
if (currentBalance > 0) {
newTokenUnit = calculateDefaultEditPositionUnit(
_setTotalSupply,
_componentPreviousBalance,
currentBalance,
positionUnit
);
} else {
newTokenUnit = 0;
}
editDefaultPosition(_setToken, _component, newTokenUnit);
return (currentBalance, positionUnit, newTokenUnit);
}
/**
* Calculate the new position unit given total notional values pre and post executing an action that changes SetToken state
* The intention is to make updates to the units without accidentally picking up airdropped assets as well.
*
* @param _setTokenSupply Supply of SetToken in precise units (10^18)
* @param _preTotalNotional Total notional amount of component prior to executing action
* @param _postTotalNotional Total notional amount of component after the executing action
* @param _prePositionUnit Position unit of SetToken prior to executing action
* @return New position unit
*/
function calculateDefaultEditPositionUnit(
uint256 _setTokenSupply,
uint256 _preTotalNotional,
uint256 _postTotalNotional,
uint256 _prePositionUnit
)
internal
pure
returns (uint256)
{
// If pre action total notional amount is greater then subtract post action total notional and calculate new position units
uint256 airdroppedAmount = _preTotalNotional.sub(_prePositionUnit.preciseMul(_setTokenSupply));
return _postTotalNotional.sub(airdroppedAmount).preciseDiv(_setTokenSupply);
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { SignedSafeMath } from "@openzeppelin/contracts/math/SignedSafeMath.sol";
/**
* @title PreciseUnitMath
* @author Set Protocol
*
* Arithmetic for fixed-point numbers with 18 decimals of precision. Some functions taken from
* dYdX's BaseMath library.
*
* CHANGELOG:
* - 9/21/20: Added safePower function
* - 4/21/21: Added approximatelyEquals function
*/
library PreciseUnitMath {
using SafeMath for uint256;
using SignedSafeMath for int256;
// The number One in precise units.
uint256 constant internal PRECISE_UNIT = 10 ** 18;
int256 constant internal PRECISE_UNIT_INT = 10 ** 18;
// Max unsigned integer value
uint256 constant internal MAX_UINT_256 = type(uint256).max;
// Max and min signed integer value
int256 constant internal MAX_INT_256 = type(int256).max;
int256 constant internal MIN_INT_256 = type(int256).min;
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function preciseUnit() internal pure returns (uint256) {
return PRECISE_UNIT;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function preciseUnitInt() internal pure returns (int256) {
return PRECISE_UNIT_INT;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function maxUint256() internal pure returns (uint256) {
return MAX_UINT_256;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function maxInt256() internal pure returns (int256) {
return MAX_INT_256;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function minInt256() internal pure returns (int256) {
return MIN_INT_256;
}
/**
* @dev Multiplies value a by value b (result is rounded down). It's assumed that the value b is the significand
* of a number with 18 decimals precision.
*/
function preciseMul(uint256 a, uint256 b) internal pure returns (uint256) {
return a.mul(b).div(PRECISE_UNIT);
}
/**
* @dev Multiplies value a by value b (result is rounded towards zero). It's assumed that the value b is the
* significand of a number with 18 decimals precision.
*/
function preciseMul(int256 a, int256 b) internal pure returns (int256) {
return a.mul(b).div(PRECISE_UNIT_INT);
}
/**
* @dev Multiplies value a by value b (result is rounded up). It's assumed that the value b is the significand
* of a number with 18 decimals precision.
*/
function preciseMulCeil(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
return a.mul(b).sub(1).div(PRECISE_UNIT).add(1);
}
/**
* @dev Divides value a by value b (result is rounded down).
*/
function preciseDiv(uint256 a, uint256 b) internal pure returns (uint256) {
return a.mul(PRECISE_UNIT).div(b);
}
/**
* @dev Divides value a by value b (result is rounded towards 0).
*/
function preciseDiv(int256 a, int256 b) internal pure returns (int256) {
return a.mul(PRECISE_UNIT_INT).div(b);
}
/**
* @dev Divides value a by value b (result is rounded up or away from 0).
*/
function preciseDivCeil(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "Cant divide by 0");
return a > 0 ? a.mul(PRECISE_UNIT).sub(1).div(b).add(1) : 0;
}
/**
* @dev Divides value a by value b (result is rounded down - positive numbers toward 0 and negative away from 0).
*/
function divDown(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "Cant divide by 0");
require(a != MIN_INT_256 || b != -1, "Invalid input");
int256 result = a.div(b);
if (a ^ b < 0 && a % b != 0) {
result -= 1;
}
return result;
}
/**
* @dev Multiplies value a by value b where rounding is towards the lesser number.
* (positive values are rounded towards zero and negative values are rounded away from 0).
*/
function conservativePreciseMul(int256 a, int256 b) internal pure returns (int256) {
return divDown(a.mul(b), PRECISE_UNIT_INT);
}
/**
* @dev Divides value a by value b where rounding is towards the lesser number.
* (positive values are rounded towards zero and negative values are rounded away from 0).
*/
function conservativePreciseDiv(int256 a, int256 b) internal pure returns (int256) {
return divDown(a.mul(PRECISE_UNIT_INT), b);
}
/**
* @dev Performs the power on a specified value, reverts on overflow.
*/
function safePower(
uint256 a,
uint256 pow
)
internal
pure
returns (uint256)
{
require(a > 0, "Value must be positive");
uint256 result = 1;
for (uint256 i = 0; i < pow; i++){
uint256 previousResult = result;
// Using safemath multiplication prevents overflows
result = previousResult.mul(a);
}
return result;
}
/**
* @dev Returns true if a =~ b within range, false otherwise.
*/
function approximatelyEquals(uint256 a, uint256 b, uint256 range) internal pure returns (bool) {
return a <= b.add(range) && a >= b.sub(range);
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { IController } from "../../interfaces/IController.sol";
import { IIntegrationRegistry } from "../../interfaces/IIntegrationRegistry.sol";
import { IPriceOracle } from "../../interfaces/IPriceOracle.sol";
import { ISetValuer } from "../../interfaces/ISetValuer.sol";
/**
* @title ResourceIdentifier
* @author Set Protocol
*
* A collection of utility functions to fetch information related to Resource contracts in the system
*/
library ResourceIdentifier {
// IntegrationRegistry will always be resource ID 0 in the system
uint256 constant internal INTEGRATION_REGISTRY_RESOURCE_ID = 0;
// PriceOracle will always be resource ID 1 in the system
uint256 constant internal PRICE_ORACLE_RESOURCE_ID = 1;
// SetValuer resource will always be resource ID 2 in the system
uint256 constant internal SET_VALUER_RESOURCE_ID = 2;
/* ============ Internal ============ */
/**
* Gets the instance of integration registry stored on Controller. Note: IntegrationRegistry is stored as index 0 on
* the Controller
*/
function getIntegrationRegistry(IController _controller) internal view returns (IIntegrationRegistry) {
return IIntegrationRegistry(_controller.resourceId(INTEGRATION_REGISTRY_RESOURCE_ID));
}
/**
* Gets instance of price oracle on Controller. Note: PriceOracle is stored as index 1 on the Controller
*/
function getPriceOracle(IController _controller) internal view returns (IPriceOracle) {
return IPriceOracle(_controller.resourceId(PRICE_ORACLE_RESOURCE_ID));
}
/**
* Gets the instance of Set valuer on Controller. Note: SetValuer is stored as index 2 on the Controller
*/
function getSetValuer(IController _controller) internal view returns (ISetValuer) {
return ISetValuer(_controller.resourceId(SET_VALUER_RESOURCE_ID));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCast {
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toUint128(uint256 value) internal pure returns (uint128) {
require(value < 2**128, "SafeCast: value doesn\'t fit in 128 bits");
return uint128(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toUint64(uint256 value) internal pure returns (uint64) {
require(value < 2**64, "SafeCast: value doesn\'t fit in 64 bits");
return uint64(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toUint32(uint256 value) internal pure returns (uint32) {
require(value < 2**32, "SafeCast: value doesn\'t fit in 32 bits");
return uint32(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toUint16(uint256 value) internal pure returns (uint16) {
require(value < 2**16, "SafeCast: value doesn\'t fit in 16 bits");
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*/
function toUint8(uint256 value) internal pure returns (uint8) {
require(value < 2**8, "SafeCast: value doesn\'t fit in 8 bits");
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/
function toInt128(int256 value) internal pure returns (int128) {
require(value >= -2**127 && value < 2**127, "SafeCast: value doesn\'t fit in 128 bits");
return int128(value);
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/
function toInt64(int256 value) internal pure returns (int64) {
require(value >= -2**63 && value < 2**63, "SafeCast: value doesn\'t fit in 64 bits");
return int64(value);
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/
function toInt32(int256 value) internal pure returns (int32) {
require(value >= -2**31 && value < 2**31, "SafeCast: value doesn\'t fit in 32 bits");
return int32(value);
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/
function toInt16(int256 value) internal pure returns (int16) {
require(value >= -2**15 && value < 2**15, "SafeCast: value doesn\'t fit in 16 bits");
return int16(value);
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*
* _Available since v3.1._
*/
function toInt8(int256 value) internal pure returns (int8) {
require(value >= -2**7 && value < 2**7, "SafeCast: value doesn\'t fit in 8 bits");
return int8(value);
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/
function toInt256(uint256 value) internal pure returns (int256) {
require(value < 2**255, "SafeCast: value doesn't fit in an int256");
return int256(value);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @title SignedSafeMath
* @dev Signed math operations with safety checks that revert on error.
*/
library SignedSafeMath {
int256 constant private _INT256_MIN = -2**255;
/**
* @dev Returns the multiplication of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two signed integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
/**
* @dev Returns the subtraction of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
/**
* @dev Returns the addition of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
interface IIntegrationRegistry {
function addIntegration(address _module, string memory _id, address _wrapper) external;
function getIntegrationAdapter(address _module, string memory _id) external view returns(address);
function getIntegrationAdapterWithHash(address _module, bytes32 _id) external view returns(address);
function isValidIntegration(address _module, string memory _id) external view returns(bool);
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
/**
* @title IPriceOracle
* @author Set Protocol
*
* Interface for interacting with PriceOracle
*/
interface IPriceOracle {
/* ============ Functions ============ */
function getPrice(address _assetOne, address _assetTwo) external view returns (uint256);
function masterQuoteAsset() external view returns (address);
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { ISetToken } from "../interfaces/ISetToken.sol";
interface ISetValuer {
function calculateSetTokenValuation(ISetToken _setToken, address _quoteAsset) external view returns (uint256);
}
|
Boolean that returns if any SetToken can initialize this module. If false, then subject to allow list. Updateable by governance.
|
bool public anySetAllowed;
| 462,654 |
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pragma solidity ^0.5.16;
interface IERC20 {
function TOTALSUPPLY344() external view returns (uint256); //inject NONSTANDARD NAMING
function BALANCEOF995(address account) external view returns (uint256); //inject NONSTANDARD NAMING
function TRANSFER795(address recipient, uint256 amount) external returns (bool); //inject NONSTANDARD NAMING
function ALLOWANCE796(address owner, address spender) external view returns (uint256); //inject NONSTANDARD NAMING
function APPROVE408(address spender, uint256 amount) external returns (bool); //inject NONSTANDARD NAMING
function TRANSFERFROM856(address sender, address recipient, uint256 amount) external returns (bool); //inject NONSTANDARD NAMING
function DECIMALS615() external view returns (uint); //inject NONSTANDARD NAMING
event TRANSFER370(address indexed from, address indexed to, uint256 value); //inject NONSTANDARD NAMING
event APPROVAL858(address indexed owner, address indexed spender, uint256 value); //inject NONSTANDARD NAMING
}
library SafeMath {
function ADD697(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function SUB109(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
return SUB109(a, b, "SafeMath: subtraction overflow");
}
function SUB109(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { //inject NONSTANDARD NAMING
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function MUL960(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function DIV581(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
return DIV581(a, b, "SafeMath: division by zero");
}
function DIV581(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { //inject NONSTANDARD NAMING
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function MOD970(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
return MOD970(a, b, "SafeMath: modulo by zero");
}
function MOD970(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { //inject NONSTANDARD NAMING
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
function ISCONTRACT908(address account) internal view returns (bool) { //inject NONSTANDARD NAMING
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
function TOPAYABLE655(address account) internal pure returns (address payable) { //inject NONSTANDARD NAMING
return address(uint160(account));
}
function SENDVALUE370(address payable recipient, uint256 amount) internal { //inject NONSTANDARD NAMING
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
}
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function SAFETRANSFER212(IERC20 token, address to, uint256 value) internal { //inject NONSTANDARD NAMING
CALLOPTIONALRETURN170(token, abi.encodeWithSelector(token.TRANSFER795.selector, to, value));
}
function SAFETRANSFERFROM22(IERC20 token, address from, address to, uint256 value) internal { //inject NONSTANDARD NAMING
CALLOPTIONALRETURN170(token, abi.encodeWithSelector(token.TRANSFERFROM856.selector, from, to, value));
}
function SAFEAPPROVE493(IERC20 token, address spender, uint256 value) internal { //inject NONSTANDARD NAMING
require((value == 0) || (token.ALLOWANCE796(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
CALLOPTIONALRETURN170(token, abi.encodeWithSelector(token.APPROVE408.selector, spender, value));
}
function CALLOPTIONALRETURN170(IERC20 token, bytes memory data) private { //inject NONSTANDARD NAMING
require(address(token).ISCONTRACT908(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface Controller {
function VAULTS291(address) external view returns (address); //inject NONSTANDARD NAMING
}
interface Balancer {
function JOINPOOL849(uint,uint[] calldata) external; //inject NONSTANDARD NAMING
function EXITPOOL804(uint,uint[] calldata) external; //inject NONSTANDARD NAMING
}
interface MStable {
function MINT666(address, uint) external; //inject NONSTANDARD NAMING
function REDEEM500(address, uint) external; //inject NONSTANDARD NAMING
}
contract StrategyBalancerMTA {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint256;
address constant public want295 = address(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48); //inject NONSTANDARD NAMING
address constant public musd674 = address(0xe2f2a5C287993345a840Db3B0845fbC70f5935a5); //inject NONSTANDARD NAMING
address constant public balancer837 = address(0x72Cd8f4504941Bf8c5a21d1Fd83A96499FD71d2C); //inject NONSTANDARD NAMING
address public governance;
address public controller;
bool public breaker = false;
// Supply tracks the number of `want` that we have lent out of other distro's
uint public supply = 0;
constructor(address _controller) public {
governance = msg.sender;
controller = _controller;
}
function SETBREAKER384(bool _breaker) public { //inject NONSTANDARD NAMING
require(msg.sender == governance, "!governance");
breaker = _breaker;
}
function DEPOSIT98() external { //inject NONSTANDARD NAMING
require(breaker == false, "!breaker");
uint _balance = IERC20(want295).BALANCEOF995(address(this));
uint _want = _balance.DIV581(2);
IERC20(want295).SAFEAPPROVE493(musd674, 0);
IERC20(want295).SAFEAPPROVE493(musd674, _want);
uint _before = _balance;
MStable(musd674).MINT666(want295, _want);
uint _after = IERC20(want295).BALANCEOF995(address(this));
supply = supply.ADD697(_before.SUB109(_after));
uint _musd = IERC20(musd674).BALANCEOF995(address(this));
uint _total = IERC20(balancer837).TOTALSUPPLY344();
uint _balancerMUSD = IERC20(musd674).BALANCEOF995(balancer837);
uint _poolAmountMUSD = _musd.MUL960(_total).DIV581(_balancerMUSD);
uint _balancerUSDC = IERC20(want295).BALANCEOF995(balancer837);
uint _poolAmountUSDC = _want.MUL960(_total).DIV581(_balancerUSDC);
uint _poolAmountOut = _poolAmountMUSD;
if (_poolAmountUSDC < _poolAmountOut) {
_poolAmountOut = _poolAmountUSDC;
}
IERC20(want295).SAFEAPPROVE493(balancer837, 0);
IERC20(want295).SAFEAPPROVE493(balancer837, _want);
IERC20(musd674).SAFEAPPROVE493(balancer837, 0);
IERC20(musd674).SAFEAPPROVE493(balancer837, _musd);
uint[] memory _maxAmountIn = new uint[](2);
_maxAmountIn[0] = _musd;
_maxAmountIn[1] = _want;
_before = IERC20(want295).BALANCEOF995(address(this));
Balancer(balancer837).JOINPOOL849(_poolAmountOut, _maxAmountIn);
_after = IERC20(want295).BALANCEOF995(address(this));
supply = supply.ADD697(_before.SUB109(_after));
}
// Controller only function for creating additional rewards from dust
function WITHDRAW505(IERC20 _asset) external returns (uint balance) { //inject NONSTANDARD NAMING
require(msg.sender == controller, "!controller");
require(address(_asset) != want295, "!c");
require(address(_asset) != musd674, "!c");
require(address(_asset) != balancer837, "!c");
balance = _asset.BALANCEOF995(address(this));
_asset.SAFETRANSFER212(controller, balance);
}
function WITHDRAWM660(uint _amount) internal returns (uint) { //inject NONSTANDARD NAMING
if (_amount > supply) {
// Pool made too much profit, so we reset to 0 to avoid revert
supply = 0;
} else {
supply = supply.SUB109(_amount);
}
uint _before = IERC20(want295).BALANCEOF995(address(this));
MStable(musd674).REDEEM500(want295, _amount);
uint _after = IERC20(want295).BALANCEOF995(address(this));
return _after.SUB109(_before);
}
function WITHDRAWBPT914(uint _amount) internal returns (uint) { //inject NONSTANDARD NAMING
uint _calc = CALCULATERATIO430(_amount);
_amount = _amount.SUB109(_amount.MUL960(10).DIV581(10000));
return _WITHDRAWSOME884(_calc, _amount);
}
// Withdraw partial funds, normally used with a vault withdrawal
function WITHDRAW505(uint _amount) external { //inject NONSTANDARD NAMING
require(msg.sender == controller, "!controller");
uint _balance = IERC20(want295).BALANCEOF995(address(this));
if (_balance < _amount) {
uint _musd = NORMALIZE117(IERC20(musd674).BALANCEOF995(address(this)));
uint _remainder = _amount.SUB109(_balance);
if (_musd > 0) {
if (_musd > _remainder) {
_amount = WITHDRAWM660(_remainder);
_amount = _amount.ADD697(_balance);
} else {
_remainder = _remainder.SUB109(_musd);
uint _withdrew = WITHDRAWM660(_musd);
_amount = _withdrew.ADD697(_balance);
_withdrew = WITHDRAWBPT914(_remainder);
_amount = _amount.ADD697(_withdrew);
}
} else {
_amount = WITHDRAWBPT914(_remainder);
_amount = _amount.ADD697(_balance);
}
}
IERC20(want295).SAFETRANSFER212(controller, _amount);
}
function REDEEM500() external { //inject NONSTANDARD NAMING
require(msg.sender == governance, "!governance");
uint _balance = NORMALIZE117(IERC20(musd674).BALANCEOF995(address(this)));
if (_balance > supply) {
// Pool made too much profit, so we reset to 0 to avoid revert
supply = 0;
} else {
supply = supply.SUB109(_balance);
}
MStable(musd674).REDEEM500(want295, _balance);
}
// Withdraw all funds, normally used when migrating strategies
function WITHDRAWALL744() external returns (uint balance) { //inject NONSTANDARD NAMING
require(msg.sender == controller, "!controller");
_WITHDRAWALL952();
balance = IERC20(want295).BALANCEOF995(address(this));
IERC20(want295).SAFETRANSFER212(controller, balance);
}
function _WITHDRAWALL952() internal { //inject NONSTANDARD NAMING
uint _bpt = IERC20(balancer837).BALANCEOF995(address(this));
uint[] memory _minAmountOut = new uint[](2);
_minAmountOut[0] = 0;
_minAmountOut[1] = 0;
uint _before = IERC20(want295).BALANCEOF995(address(this));
Balancer(balancer837).EXITPOOL804(_bpt, _minAmountOut);
uint _after = IERC20(want295).BALANCEOF995(address(this));
uint _diff = _after.SUB109(_before);
if (_diff > supply) {
// Pool made too much profit, so we reset to 0 to avoid revert
supply = 0;
} else {
supply = supply.SUB109(_after.SUB109(_before));
}
uint _musd = IERC20(musd674).BALANCEOF995(address(this));
// This one is the exception because it assumes we can redeem 1 USDC
_diff = NORMALIZE117(_musd);
if (_diff > supply) {
// Pool made too much profit, so we reset to 0 to avoid revert
supply = 0;
} else {
supply = supply.SUB109(_diff);
}
MStable(musd674).REDEEM500(want295, _diff);
}
function CALCULATERATIO430(uint _amount) public view returns (uint) { //inject NONSTANDARD NAMING
uint _musd = NORMALIZE117(IERC20(musd674).BALANCEOF995(balancer837));
uint _want = IERC20(want295).BALANCEOF995(balancer837);
uint _total = _musd.ADD697(_want);
uint _ratio = _amount.MUL960(_want).DIV581(_total);
return _ratio;
}
function _WITHDRAWSOME884(uint256 _amount, uint _max) internal returns (uint) { //inject NONSTANDARD NAMING
uint _redeem = IERC20(balancer837).TOTALSUPPLY344().MUL960(_amount).DIV581(IERC20(want295).BALANCEOF995(balancer837));
if (_redeem > IERC20(balancer837).BALANCEOF995(address(this))) {
_redeem = IERC20(balancer837).BALANCEOF995(address(this));
}
uint[] memory _minAmountOut = new uint[](2);
_minAmountOut[0] = 0;
_minAmountOut[1] = 0;
uint _before = IERC20(want295).BALANCEOF995(address(this));
uint _mBefore = IERC20(musd674).BALANCEOF995(address(this));
Balancer(balancer837).EXITPOOL804(_redeem, _minAmountOut);
uint _mAfter = IERC20(musd674).BALANCEOF995(address(this));
uint _after = IERC20(want295).BALANCEOF995(address(this));
uint _musd = _mAfter.SUB109(_mBefore);
uint _withdrew = _after.SUB109(_before);
if (_withdrew > supply) {
// Pool made too much profit, so we reset to 0 to avoid revert
supply = 0;
} else {
supply = supply.SUB109(_withdrew);
}
_musd = NORMALIZE117(_musd);
if (_musd > supply) {
// Pool made too much profit, so we reset to 0 to avoid revert
supply = 0;
} else {
supply = supply.SUB109(_musd);
}
_before = IERC20(want295).BALANCEOF995(address(this));
MStable(musd674).REDEEM500(want295, _musd);
_after = IERC20(want295).BALANCEOF995(address(this));
_withdrew = _withdrew.ADD697(_after.SUB109(_before));
// Apply the fee as a difference
_withdrew = _withdrew.SUB109(_musd.SUB109(_after.SUB109(_before)));
if (_withdrew > _max) {
_withdrew = _max;
}
return _withdrew;
}
function NORMALIZE117(uint _amount) public view returns (uint) { //inject NONSTANDARD NAMING
return _amount.MUL960(10**IERC20(want295).DECIMALS615()).DIV581(10**IERC20(musd674).DECIMALS615());
}
function BALANCEOF995() public view returns (uint) { //inject NONSTANDARD NAMING
return IERC20(want295).BALANCEOF995(address(this))
.ADD697(supply);
}
function SETGOVERNANCE741(address _governance) external { //inject NONSTANDARD NAMING
require(msg.sender == governance, "!governance");
governance = _governance;
}
function SETCONTROLLER847(address _controller) external { //inject NONSTANDARD NAMING
require(msg.sender == governance, "!governance");
controller = _controller;
}
}
|
inject NONSTANDARD NAMING
|
function BALANCEOF995(address account) external view returns (uint256);
| 5,414,239 |
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// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {SafeMath} from '../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {SafeERC20} from '../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
import {IPriceOracleGetter} from '../interfaces/IPriceOracleGetter.sol';
import {IERC20WithPermit} from '../interfaces/IERC20WithPermit.sol';
import {FlashLoanReceiverBase} from '../flashloan/base/FlashLoanReceiverBase.sol';
/**
* @title BaseParaSwapAdapter
* @notice Utility functions for adapters using ParaSwap
* @author Jason Raymond Bell
*/
abstract contract BaseParaSwapAdapter is FlashLoanReceiverBase, Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
using SafeERC20 for IERC20Detailed;
using SafeERC20 for IERC20WithPermit;
struct PermitSignature {
uint256 amount;
uint256 deadline;
uint8 v;
bytes32 r;
bytes32 s;
}
// Max slippage percent allowed
uint256 public constant MAX_SLIPPAGE_PERCENT = 3000; // 30%
IPriceOracleGetter public immutable ORACLE;
event Swapped(address indexed fromAsset, address indexed toAsset, uint256 fromAmount, uint256 receivedAmount);
constructor(
ILendingPoolAddressesProvider addressesProvider
) public FlashLoanReceiverBase(addressesProvider) {
ORACLE = IPriceOracleGetter(addressesProvider.getPriceOracle());
}
/**
* @dev Get the price of the asset from the oracle denominated in eth
* @param asset address
* @return eth price for the asset
*/
function _getPrice(address asset) internal view returns (uint256) {
return ORACLE.getAssetPrice(asset);
}
/**
* @dev Get the decimals of an asset
* @return number of decimals of the asset
*/
function _getDecimals(IERC20Detailed asset) internal view returns (uint8) {
uint8 decimals = asset.decimals();
// Ensure 10**decimals won't overflow a uint256
require(decimals <= 77, 'TOO_MANY_DECIMALS_ON_TOKEN');
return decimals;
}
/**
* @dev Get the aToken associated to the asset
* @return address of the aToken
*/
function _getReserveData(address asset) internal view returns (DataTypes.ReserveData memory) {
return LENDING_POOL.getReserveData(asset);
}
/**
* @dev Pull the ATokens from the user
* @param reserve address of the asset
* @param reserveAToken address of the aToken of the reserve
* @param user address
* @param amount of tokens to be transferred to the contract
* @param permitSignature struct containing the permit signature
*/
function _pullATokenAndWithdraw(
address reserve,
IERC20WithPermit reserveAToken,
address user,
uint256 amount,
PermitSignature memory permitSignature
) internal {
// If deadline is set to zero, assume there is no signature for permit
if (permitSignature.deadline != 0) {
reserveAToken.permit(
user,
address(this),
permitSignature.amount,
permitSignature.deadline,
permitSignature.v,
permitSignature.r,
permitSignature.s
);
}
// transfer from user to adapter
reserveAToken.safeTransferFrom(user, address(this), amount);
// withdraw reserve
require(
LENDING_POOL.withdraw(reserve, amount, address(this)) == amount,
'UNEXPECTED_AMOUNT_WITHDRAWN'
);
}
/**
* @dev Emergency rescue for token stucked on this contract, as failsafe mechanism
* - Funds should never remain in this contract more time than during transactions
* - Only callable by the owner
*/
function rescueTokens(IERC20 token) external onlyOwner {
token.safeTransfer(owner(), token.balanceOf(address(this)));
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, 'SafeMath: addition overflow');
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, 'SafeMath: subtraction overflow');
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, 'SafeMath: multiplication overflow');
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, 'SafeMath: division by zero');
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, 'SafeMath: modulo by zero');
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IERC20} from './IERC20.sol';
interface IERC20Detailed is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
import {IERC20} from './IERC20.sol';
import {SafeMath} from './SafeMath.sol';
import {Address} from './Address.sol';
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
'SafeERC20: approve from non-zero to non-zero allowance'
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), 'SafeERC20: call to non-contract');
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, 'SafeERC20: low-level call failed');
if (returndata.length > 0) {
// Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), 'SafeERC20: ERC20 operation did not succeed');
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './Context.sol';
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), 'Ownable: caller is not the owner');
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), 'Ownable: new owner is the zero address');
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title LendingPoolAddressesProvider contract
* @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
* - Acting also as factory of proxies and admin of those, so with right to change its implementations
* - Owned by the Aave Governance
* @author Aave
**/
interface ILendingPoolAddressesProvider {
event MarketIdSet(string newMarketId);
event LendingPoolUpdated(address indexed newAddress);
event ConfigurationAdminUpdated(address indexed newAddress);
event EmergencyAdminUpdated(address indexed newAddress);
event LendingPoolConfiguratorUpdated(address indexed newAddress);
event LendingPoolCollateralManagerUpdated(address indexed newAddress);
event PriceOracleUpdated(address indexed newAddress);
event LendingRateOracleUpdated(address indexed newAddress);
event ProxyCreated(bytes32 id, address indexed newAddress);
event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);
function getMarketId() external view returns (string memory);
function setMarketId(string calldata marketId) external;
function setAddress(bytes32 id, address newAddress) external;
function setAddressAsProxy(bytes32 id, address impl) external;
function getAddress(bytes32 id) external view returns (address);
function getLendingPool() external view returns (address);
function setLendingPoolImpl(address pool) external;
function getLendingPoolConfigurator() external view returns (address);
function setLendingPoolConfiguratorImpl(address configurator) external;
function getLendingPoolCollateralManager() external view returns (address);
function setLendingPoolCollateralManager(address manager) external;
function getPoolAdmin() external view returns (address);
function setPoolAdmin(address admin) external;
function getEmergencyAdmin() external view returns (address);
function setEmergencyAdmin(address admin) external;
function getPriceOracle() external view returns (address);
function setPriceOracle(address priceOracle) external;
function getLendingRateOracle() external view returns (address);
function setLendingRateOracle(address lendingRateOracle) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
library DataTypes {
// refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
struct ReserveData {
//stores the reserve configuration
ReserveConfigurationMap configuration;
//the liquidity index. Expressed in ray
uint128 liquidityIndex;
//variable borrow index. Expressed in ray
uint128 variableBorrowIndex;
//the current supply rate. Expressed in ray
uint128 currentLiquidityRate;
//the current variable borrow rate. Expressed in ray
uint128 currentVariableBorrowRate;
//the current stable borrow rate. Expressed in ray
uint128 currentStableBorrowRate;
uint40 lastUpdateTimestamp;
//tokens addresses
address aTokenAddress;
address stableDebtTokenAddress;
address variableDebtTokenAddress;
//address of the interest rate strategy
address interestRateStrategyAddress;
//the id of the reserve. Represents the position in the list of the active reserves
uint8 id;
}
struct ReserveConfigurationMap {
//bit 0-15: LTV
//bit 16-31: Liq. threshold
//bit 32-47: Liq. bonus
//bit 48-55: Decimals
//bit 56: Reserve is active
//bit 57: reserve is frozen
//bit 58: borrowing is enabled
//bit 59: stable rate borrowing enabled
//bit 60-63: reserved
//bit 64-79: reserve factor
uint256 data;
}
struct UserConfigurationMap {
uint256 data;
}
enum InterestRateMode {NONE, STABLE, VARIABLE}
enum Roles {DEPOSITOR, BORROWER, LIQUIDATOR, STABLE_RATE_MANAGER}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title IPriceOracleGetter interface
* @notice Interface for the Aave price oracle.
**/
interface IPriceOracleGetter {
/**
* @dev returns the asset price in ETH
* @param asset the address of the asset
* @return the ETH price of the asset
**/
function getAssetPrice(address asset) external view returns (uint256);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
interface IERC20WithPermit is IERC20 {
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {SafeMath} from '../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
import {SafeERC20} from '../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {IFlashLoanReceiver} from '../interfaces/IFlashLoanReceiver.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
abstract contract FlashLoanReceiverBase is IFlashLoanReceiver {
using SafeERC20 for IERC20;
using SafeMath for uint256;
ILendingPoolAddressesProvider public immutable override ADDRESSES_PROVIDER;
ILendingPool public immutable override LENDING_POOL;
constructor(ILendingPoolAddressesProvider provider) public {
ADDRESSES_PROVIDER = provider;
LENDING_POOL = ILendingPool(provider.getLendingPool());
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly {
codehash := extcodehash(account)
}
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, 'Address: insufficient balance');
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{value: amount}('');
require(success, 'Address: unable to send value, recipient may have reverted');
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
/**
* @title IFlashLoanReceiver interface
* @notice Interface for the Aave fee IFlashLoanReceiver.
* @author Aave
* @dev implement this interface to develop a flashloan-compatible flashLoanReceiver contract
**/
interface IFlashLoanReceiver {
function executeOperation(
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata premiums,
address initiator,
bytes calldata params
) external returns (bool);
function ADDRESSES_PROVIDER() external view returns (ILendingPoolAddressesProvider);
function LENDING_POOL() external view returns (ILendingPool);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {ILendingPoolAddressesProvider} from './ILendingPoolAddressesProvider.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
interface ILendingPool {
/**
* @dev Emitted on deposit()
* @param reserve The address of the underlying asset of the reserve
* @param user The address initiating the deposit
* @param onBehalfOf The beneficiary of the deposit, receiving the aTokens
* @param amount The amount deposited
* @param referral The referral code used
**/
event Deposit(
address indexed reserve,
address user,
address indexed onBehalfOf,
uint256 amount,
uint16 indexed referral
);
/**
* @dev Emitted on withdraw()
* @param reserve The address of the underlyng asset being withdrawn
* @param user The address initiating the withdrawal, owner of aTokens
* @param to Address that will receive the underlying
* @param amount The amount to be withdrawn
**/
event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount);
/**
* @dev Emitted on borrow() and flashLoan() when debt needs to be opened
* @param reserve The address of the underlying asset being borrowed
* @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just
* initiator of the transaction on flashLoan()
* @param onBehalfOf The address that will be getting the debt
* @param amount The amount borrowed out
* @param borrowRateMode The rate mode: 1 for Stable, 2 for Variable
* @param borrowRate The numeric rate at which the user has borrowed
* @param referral The referral code used
**/
event Borrow(
address indexed reserve,
address user,
address indexed onBehalfOf,
uint256 amount,
uint256 borrowRateMode,
uint256 borrowRate,
uint16 indexed referral
);
/**
* @dev Emitted on repay()
* @param reserve The address of the underlying asset of the reserve
* @param user The beneficiary of the repayment, getting his debt reduced
* @param repayer The address of the user initiating the repay(), providing the funds
* @param amount The amount repaid
**/
event Repay(
address indexed reserve,
address indexed user,
address indexed repayer,
uint256 amount
);
/**
* @dev Emitted on swapBorrowRateMode()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user swapping his rate mode
* @param rateMode The rate mode that the user wants to swap to
**/
event Swap(address indexed reserve, address indexed user, uint256 rateMode);
/**
* @dev Emitted on setUserUseReserveAsCollateral()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user enabling the usage as collateral
**/
event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user);
/**
* @dev Emitted on setUserUseReserveAsCollateral()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user enabling the usage as collateral
**/
event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user);
/**
* @dev Emitted on rebalanceStableBorrowRate()
* @param reserve The address of the underlying asset of the reserve
* @param user The address of the user for which the rebalance has been executed
**/
event RebalanceStableBorrowRate(address indexed reserve, address indexed user);
/**
* @dev Emitted on flashLoan()
* @param target The address of the flash loan receiver contract
* @param initiator The address initiating the flash loan
* @param asset The address of the asset being flash borrowed
* @param amount The amount flash borrowed
* @param premium The fee flash borrowed
* @param referralCode The referral code used
**/
event FlashLoan(
address indexed target,
address indexed initiator,
address indexed asset,
uint256 amount,
uint256 premium,
uint16 referralCode
);
/**
* @dev Emitted when the pause is triggered.
*/
event Paused();
/**
* @dev Emitted when the pause is lifted.
*/
event Unpaused();
/**
* @dev Emitted when a borrower is liquidated. This event is emitted by the LendingPool via
* LendingPoolCollateral manager using a DELEGATECALL
* This allows to have the events in the generated ABI for LendingPool.
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param liquidatedCollateralAmount The amount of collateral received by the liiquidator
* @param liquidator The address of the liquidator
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
event LiquidationCall(
address indexed collateralAsset,
address indexed debtAsset,
address indexed user,
uint256 debtToCover,
uint256 liquidatedCollateralAmount,
address liquidator,
bool receiveAToken
);
/**
* @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared
* in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal,
* the event will actually be fired by the LendingPool contract. The event is therefore replicated here so it
* gets added to the LendingPool ABI
* @param reserve The address of the underlying asset of the reserve
* @param liquidityRate The new liquidity rate
* @param stableBorrowRate The new stable borrow rate
* @param variableBorrowRate The new variable borrow rate
* @param liquidityIndex The new liquidity index
* @param variableBorrowIndex The new variable borrow index
**/
event ReserveDataUpdated(
address indexed reserve,
uint256 liquidityRate,
uint256 stableBorrowRate,
uint256 variableBorrowRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex
);
/**
* @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. User deposits 100 USDC and gets in return 100 aUSDC
* @param asset The address of the underlying asset to deposit
* @param amount The amount to be deposited
* @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
* wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
* is a different wallet
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function deposit(
address asset,
uint256 amount,
address onBehalfOf,
uint16 referralCode
) external;
/**
* @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
* E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
* @param asset The address of the underlying asset to withdraw
* @param amount The underlying amount to be withdrawn
* - Send the value type(uint256).max in order to withdraw the whole aToken balance
* @param to Address that will receive the underlying, same as msg.sender if the user
* wants to receive it on his own wallet, or a different address if the beneficiary is a
* different wallet
* @return The final amount withdrawn
**/
function withdraw(
address asset,
uint256 amount,
address to
) external returns (uint256);
/**
* @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
* already deposited enough collateral, or he was given enough allowance by a credit delegator on the
* corresponding debt token (StableDebtToken or VariableDebtToken)
* - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
* and 100 stable/variable debt tokens, depending on the `interestRateMode`
* @param asset The address of the underlying asset to borrow
* @param amount The amount to be borrowed
* @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
* @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
* calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
* if he has been given credit delegation allowance
**/
function borrow(
address asset,
uint256 amount,
uint256 interestRateMode,
uint16 referralCode,
address onBehalfOf
) external;
/**
* @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
* - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
* @param asset The address of the borrowed underlying asset previously borrowed
* @param amount The amount to repay
* - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
* @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
* @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
* @return The final amount repaid
**/
function repay(
address asset,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) external returns (uint256);
/**
* @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
* @param asset The address of the underlying asset borrowed
* @param rateMode The rate mode that the user wants to swap to
**/
function swapBorrowRateMode(address asset, uint256 rateMode) external;
/**
* @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
* - Users can be rebalanced if the following conditions are satisfied:
* 1. Usage ratio is above 95%
* 2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
* borrowed at a stable rate and depositors are not earning enough
* @param asset The address of the underlying asset borrowed
* @param user The address of the user to be rebalanced
**/
function rebalanceStableBorrowRate(address asset, address user) external;
/**
* @dev Allows depositors to enable/disable a specific deposited asset as collateral
* @param asset The address of the underlying asset deposited
* @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
**/
function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external;
/**
* @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
* - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
function liquidationCall(
address collateralAsset,
address debtAsset,
address user,
uint256 debtToCover,
bool receiveAToken
) external;
/**
* @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned.
* IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
* For further details please visit https://developers.aave.com
* @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
* @param assets The addresses of the assets being flash-borrowed
* @param amounts The amounts amounts being flash-borrowed
* @param modes Types of the debt to open if the flash loan is not returned:
* 0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
* 1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* 2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* @param onBehalfOf The address that will receive the debt in the case of using on `modes` 1 or 2
* @param params Variadic packed params to pass to the receiver as extra information
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function flashLoan(
address receiverAddress,
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata modes,
address onBehalfOf,
bytes calldata params,
uint16 referralCode
) external;
/**
* @dev Returns the user account data across all the reserves
* @param user The address of the user
* @return totalCollateralETH the total collateral in ETH of the user
* @return totalDebtETH the total debt in ETH of the user
* @return availableBorrowsETH the borrowing power left of the user
* @return currentLiquidationThreshold the liquidation threshold of the user
* @return ltv the loan to value of the user
* @return healthFactor the current health factor of the user
**/
function getUserAccountData(address user)
external
view
returns (
uint256 totalCollateralETH,
uint256 totalDebtETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
);
function initReserve(
address reserve,
address aTokenAddress,
address stableDebtAddress,
address variableDebtAddress,
address interestRateStrategyAddress
) external;
function setReserveInterestRateStrategyAddress(address reserve, address rateStrategyAddress)
external;
function setConfiguration(address reserve, uint256 configuration) external;
/**
* @dev Returns the configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The configuration of the reserve
**/
function getConfiguration(address asset)
external
view
returns (DataTypes.ReserveConfigurationMap memory);
/**
* @dev Returns the configuration of the user across all the reserves
* @param user The user address
* @return The configuration of the user
**/
function getUserConfiguration(address user)
external
view
returns (DataTypes.UserConfigurationMap memory);
/**
* @dev Returns the normalized income normalized income of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The reserve's normalized income
*/
function getReserveNormalizedIncome(address asset) external view returns (uint256);
/**
* @dev Returns the normalized variable debt per unit of asset
* @param asset The address of the underlying asset of the reserve
* @return The reserve normalized variable debt
*/
function getReserveNormalizedVariableDebt(address asset) external view returns (uint256);
/**
* @dev Returns the state and configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The state of the reserve
**/
function getReserveData(address asset) external view returns (DataTypes.ReserveData memory);
function finalizeTransfer(
address asset,
address from,
address to,
uint256 amount,
uint256 balanceFromAfter,
uint256 balanceToBefore
) external;
function getReservesList() external view returns (address[] memory);
function getAddressesProvider() external view returns (ILendingPoolAddressesProvider);
function setPause(bool val) external;
function paused() external view returns (bool);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {BaseParaSwapAdapter} from './BaseParaSwapAdapter.sol';
import {PercentageMath} from '../protocol/libraries/math/PercentageMath.sol';
import {IParaSwapAugustus} from '../interfaces/IParaSwapAugustus.sol';
import {IParaSwapAugustusRegistry} from '../interfaces/IParaSwapAugustusRegistry.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
/**
* @title BaseParaSwapSellAdapter
* @notice Implements the logic for selling tokens on ParaSwap
* @author Jason Raymond Bell
*/
abstract contract BaseParaSwapSellAdapter is BaseParaSwapAdapter {
using PercentageMath for uint256;
IParaSwapAugustusRegistry public immutable AUGUSTUS_REGISTRY;
constructor(
ILendingPoolAddressesProvider addressesProvider,
IParaSwapAugustusRegistry augustusRegistry
) public BaseParaSwapAdapter(addressesProvider) {
// Do something on Augustus registry to check the right contract was passed
require(!augustusRegistry.isValidAugustus(address(0)));
AUGUSTUS_REGISTRY = augustusRegistry;
}
/**
* @dev Swaps a token for another using ParaSwap
* @param fromAmountOffset Offset of fromAmount in Augustus calldata if it should be overwritten, otherwise 0
* @param swapCalldata Calldata for ParaSwap's AugustusSwapper contract
* @param augustus Address of ParaSwap's AugustusSwapper contract
* @param assetToSwapFrom Address of the asset to be swapped from
* @param assetToSwapTo Address of the asset to be swapped to
* @param amountToSwap Amount to be swapped
* @param minAmountToReceive Minimum amount to be received from the swap
* @return amountReceived The amount received from the swap
*/
function _sellOnParaSwap(
uint256 fromAmountOffset,
bytes memory swapCalldata,
IParaSwapAugustus augustus,
IERC20Detailed assetToSwapFrom,
IERC20Detailed assetToSwapTo,
uint256 amountToSwap,
uint256 minAmountToReceive
) internal returns (uint256 amountReceived) {
require(AUGUSTUS_REGISTRY.isValidAugustus(address(augustus)), 'INVALID_AUGUSTUS');
{
uint256 fromAssetDecimals = _getDecimals(assetToSwapFrom);
uint256 toAssetDecimals = _getDecimals(assetToSwapTo);
uint256 fromAssetPrice = _getPrice(address(assetToSwapFrom));
uint256 toAssetPrice = _getPrice(address(assetToSwapTo));
uint256 expectedMinAmountOut =
amountToSwap
.mul(fromAssetPrice.mul(10**toAssetDecimals))
.div(toAssetPrice.mul(10**fromAssetDecimals))
.percentMul(PercentageMath.PERCENTAGE_FACTOR - MAX_SLIPPAGE_PERCENT);
require(expectedMinAmountOut <= minAmountToReceive, 'MIN_AMOUNT_EXCEEDS_MAX_SLIPPAGE');
}
uint256 balanceBeforeAssetFrom = assetToSwapFrom.balanceOf(address(this));
require(balanceBeforeAssetFrom >= amountToSwap, 'INSUFFICIENT_BALANCE_BEFORE_SWAP');
uint256 balanceBeforeAssetTo = assetToSwapTo.balanceOf(address(this));
address tokenTransferProxy = augustus.getTokenTransferProxy();
assetToSwapFrom.safeApprove(tokenTransferProxy, 0);
assetToSwapFrom.safeApprove(tokenTransferProxy, amountToSwap);
if (fromAmountOffset != 0) {
// Ensure 256 bit (32 bytes) fromAmount value is within bounds of the
// calldata, not overlapping with the first 4 bytes (function selector).
require(fromAmountOffset >= 4 &&
fromAmountOffset <= swapCalldata.length.sub(32),
'FROM_AMOUNT_OFFSET_OUT_OF_RANGE');
// Overwrite the fromAmount with the correct amount for the swap.
// In memory, swapCalldata consists of a 256 bit length field, followed by
// the actual bytes data, that is why 32 is added to the byte offset.
assembly {
mstore(add(swapCalldata, add(fromAmountOffset, 32)), amountToSwap)
}
}
(bool success,) = address(augustus).call(swapCalldata);
if (!success) {
// Copy revert reason from call
assembly {
returndatacopy(0, 0, returndatasize())
revert(0, returndatasize())
}
}
require(assetToSwapFrom.balanceOf(address(this)) == balanceBeforeAssetFrom - amountToSwap, 'WRONG_BALANCE_AFTER_SWAP');
amountReceived = assetToSwapTo.balanceOf(address(this)).sub(balanceBeforeAssetTo);
require(amountReceived >= minAmountToReceive, 'INSUFFICIENT_AMOUNT_RECEIVED');
emit Swapped(
address(assetToSwapFrom),
address(assetToSwapTo),
amountToSwap,
amountReceived
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Errors} from '../helpers/Errors.sol';
/**
* @title PercentageMath library
* @author Aave
* @notice Provides functions to perform percentage calculations
* @dev Percentages are defined by default with 2 decimals of precision (100.00). The precision is indicated by PERCENTAGE_FACTOR
* @dev Operations are rounded half up
**/
library PercentageMath {
uint256 constant PERCENTAGE_FACTOR = 1e4; //percentage plus two decimals
uint256 constant HALF_PERCENT = PERCENTAGE_FACTOR / 2;
/**
* @dev Executes a percentage multiplication
* @param value The value of which the percentage needs to be calculated
* @param percentage The percentage of the value to be calculated
* @return The percentage of value
**/
function percentMul(uint256 value, uint256 percentage) internal pure returns (uint256) {
if (value == 0 || percentage == 0) {
return 0;
}
require(
value <= (type(uint256).max - HALF_PERCENT) / percentage,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return (value * percentage + HALF_PERCENT) / PERCENTAGE_FACTOR;
}
/**
* @dev Executes a percentage division
* @param value The value of which the percentage needs to be calculated
* @param percentage The percentage of the value to be calculated
* @return The value divided the percentage
**/
function percentDiv(uint256 value, uint256 percentage) internal pure returns (uint256) {
require(percentage != 0, Errors.MATH_DIVISION_BY_ZERO);
uint256 halfPercentage = percentage / 2;
require(
value <= (type(uint256).max - halfPercentage) / PERCENTAGE_FACTOR,
Errors.MATH_MULTIPLICATION_OVERFLOW
);
return (value * PERCENTAGE_FACTOR + halfPercentage) / percentage;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
interface IParaSwapAugustus {
function getTokenTransferProxy() external view returns (address);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
interface IParaSwapAugustusRegistry {
function isValidAugustus(address augustus) external view returns (bool);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title Errors library
* @author Aave
* @notice Defines the error messages emitted by the different contracts of the Aave protocol
* @dev Error messages prefix glossary:
* - VL = ValidationLogic
* - MATH = Math libraries
* - CT = Common errors between tokens (AToken, VariableDebtToken and StableDebtToken)
* - AT = AToken
* - SDT = StableDebtToken
* - VDT = VariableDebtToken
* - LP = LendingPool
* - LPAPR = LendingPoolAddressesProviderRegistry
* - LPC = LendingPoolConfiguration
* - RL = ReserveLogic
* - LPCM = LendingPoolCollateralManager
* - P = Pausable
*/
library Errors {
//common errors
string public constant CALLER_NOT_POOL_ADMIN = '33'; // 'The caller must be the pool admin'
string public constant BORROW_ALLOWANCE_NOT_ENOUGH = '59'; // User borrows on behalf, but allowance are too small
//contract specific errors
string public constant VL_INVALID_AMOUNT = '1'; // 'Amount must be greater than 0'
string public constant VL_NO_ACTIVE_RESERVE = '2'; // 'Action requires an active reserve'
string public constant VL_RESERVE_FROZEN = '3'; // 'Action cannot be performed because the reserve is frozen'
string public constant VL_CURRENT_AVAILABLE_LIQUIDITY_NOT_ENOUGH = '4'; // 'The current liquidity is not enough'
string public constant VL_NOT_ENOUGH_AVAILABLE_USER_BALANCE = '5'; // 'User cannot withdraw more than the available balance'
string public constant VL_TRANSFER_NOT_ALLOWED = '6'; // 'Transfer cannot be allowed.'
string public constant VL_BORROWING_NOT_ENABLED = '7'; // 'Borrowing is not enabled'
string public constant VL_INVALID_INTEREST_RATE_MODE_SELECTED = '8'; // 'Invalid interest rate mode selected'
string public constant VL_COLLATERAL_BALANCE_IS_0 = '9'; // 'The collateral balance is 0'
string public constant VL_HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD = '10'; // 'Health factor is lesser than the liquidation threshold'
string public constant VL_COLLATERAL_CANNOT_COVER_NEW_BORROW = '11'; // 'There is not enough collateral to cover a new borrow'
string public constant VL_STABLE_BORROWING_NOT_ENABLED = '12'; // stable borrowing not enabled
string public constant VL_COLLATERAL_SAME_AS_BORROWING_CURRENCY = '13'; // collateral is (mostly) the same currency that is being borrowed
string public constant VL_AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE = '14'; // 'The requested amount is greater than the max loan size in stable rate mode
string public constant VL_NO_DEBT_OF_SELECTED_TYPE = '15'; // 'for repayment of stable debt, the user needs to have stable debt, otherwise, he needs to have variable debt'
string public constant VL_NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF = '16'; // 'To repay on behalf of an user an explicit amount to repay is needed'
string public constant VL_NO_STABLE_RATE_LOAN_IN_RESERVE = '17'; // 'User does not have a stable rate loan in progress on this reserve'
string public constant VL_NO_VARIABLE_RATE_LOAN_IN_RESERVE = '18'; // 'User does not have a variable rate loan in progress on this reserve'
string public constant VL_UNDERLYING_BALANCE_NOT_GREATER_THAN_0 = '19'; // 'The underlying balance needs to be greater than 0'
string public constant VL_DEPOSIT_ALREADY_IN_USE = '20'; // 'User deposit is already being used as collateral'
string public constant LP_NOT_ENOUGH_STABLE_BORROW_BALANCE = '21'; // 'User does not have any stable rate loan for this reserve'
string public constant LP_INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET = '22'; // 'Interest rate rebalance conditions were not met'
string public constant LP_LIQUIDATION_CALL_FAILED = '23'; // 'Liquidation call failed'
string public constant LP_NOT_ENOUGH_LIQUIDITY_TO_BORROW = '24'; // 'There is not enough liquidity available to borrow'
string public constant LP_REQUESTED_AMOUNT_TOO_SMALL = '25'; // 'The requested amount is too small for a FlashLoan.'
string public constant LP_INCONSISTENT_PROTOCOL_ACTUAL_BALANCE = '26'; // 'The actual balance of the protocol is inconsistent'
string public constant LP_CALLER_NOT_LENDING_POOL_CONFIGURATOR = '27'; // 'The caller of the function is not the lending pool configurator'
string public constant LP_INCONSISTENT_FLASHLOAN_PARAMS = '28';
string public constant CT_CALLER_MUST_BE_LENDING_POOL = '29'; // 'The caller of this function must be a lending pool'
string public constant CT_CANNOT_GIVE_ALLOWANCE_TO_HIMSELF = '30'; // 'User cannot give allowance to himself'
string public constant CT_TRANSFER_AMOUNT_NOT_GT_0 = '31'; // 'Transferred amount needs to be greater than zero'
string public constant RL_RESERVE_ALREADY_INITIALIZED = '32'; // 'Reserve has already been initialized'
string public constant LPC_RESERVE_LIQUIDITY_NOT_0 = '34'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_ATOKEN_POOL_ADDRESS = '35'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_STABLE_DEBT_TOKEN_POOL_ADDRESS = '36'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_VARIABLE_DEBT_TOKEN_POOL_ADDRESS = '37'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_STABLE_DEBT_TOKEN_UNDERLYING_ADDRESS = '38'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_VARIABLE_DEBT_TOKEN_UNDERLYING_ADDRESS = '39'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_ADDRESSES_PROVIDER_ID = '40'; // 'The liquidity of the reserve needs to be 0'
string public constant LPC_INVALID_CONFIGURATION = '75'; // 'Invalid risk parameters for the reserve'
string public constant LPC_CALLER_NOT_EMERGENCY_ADMIN = '76'; // 'The caller must be the emergency admin'
string public constant LPAPR_PROVIDER_NOT_REGISTERED = '41'; // 'Provider is not registered'
string public constant LPCM_HEALTH_FACTOR_NOT_BELOW_THRESHOLD = '42'; // 'Health factor is not below the threshold'
string public constant LPCM_COLLATERAL_CANNOT_BE_LIQUIDATED = '43'; // 'The collateral chosen cannot be liquidated'
string public constant LPCM_SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = '44'; // 'User did not borrow the specified currency'
string public constant LPCM_NOT_ENOUGH_LIQUIDITY_TO_LIQUIDATE = '45'; // "There isn't enough liquidity available to liquidate"
string public constant LPCM_NO_ERRORS = '46'; // 'No errors'
string public constant LP_INVALID_FLASHLOAN_MODE = '47'; //Invalid flashloan mode selected
string public constant MATH_MULTIPLICATION_OVERFLOW = '48';
string public constant MATH_ADDITION_OVERFLOW = '49';
string public constant MATH_DIVISION_BY_ZERO = '50';
string public constant RL_LIQUIDITY_INDEX_OVERFLOW = '51'; // Liquidity index overflows uint128
string public constant RL_VARIABLE_BORROW_INDEX_OVERFLOW = '52'; // Variable borrow index overflows uint128
string public constant RL_LIQUIDITY_RATE_OVERFLOW = '53'; // Liquidity rate overflows uint128
string public constant RL_VARIABLE_BORROW_RATE_OVERFLOW = '54'; // Variable borrow rate overflows uint128
string public constant RL_STABLE_BORROW_RATE_OVERFLOW = '55'; // Stable borrow rate overflows uint128
string public constant CT_INVALID_MINT_AMOUNT = '56'; //invalid amount to mint
string public constant LP_FAILED_REPAY_WITH_COLLATERAL = '57';
string public constant CT_INVALID_BURN_AMOUNT = '58'; //invalid amount to burn
string public constant LP_FAILED_COLLATERAL_SWAP = '60';
string public constant LP_INVALID_EQUAL_ASSETS_TO_SWAP = '61';
string public constant LP_REENTRANCY_NOT_ALLOWED = '62';
string public constant LP_CALLER_MUST_BE_AN_ATOKEN = '63';
string public constant LP_IS_PAUSED = '64'; // 'Pool is paused'
string public constant LP_NO_MORE_RESERVES_ALLOWED = '65';
string public constant LP_INVALID_FLASH_LOAN_EXECUTOR_RETURN = '66';
string public constant RC_INVALID_LTV = '67';
string public constant RC_INVALID_LIQ_THRESHOLD = '68';
string public constant RC_INVALID_LIQ_BONUS = '69';
string public constant RC_INVALID_DECIMALS = '70';
string public constant RC_INVALID_RESERVE_FACTOR = '71';
string public constant LPAPR_INVALID_ADDRESSES_PROVIDER_ID = '72';
string public constant VL_INCONSISTENT_FLASHLOAN_PARAMS = '73';
string public constant LP_INCONSISTENT_PARAMS_LENGTH = '74';
string public constant UL_INVALID_INDEX = '77';
string public constant LP_NOT_CONTRACT = '78';
string public constant SDT_STABLE_DEBT_OVERFLOW = '79';
string public constant SDT_BURN_EXCEEDS_BALANCE = '80';
string public constant PLP_DEPOSITOR_UNAUTHORIZED = '81';
string public constant PLP_BORROWER_UNAUTHORIZED = '82';
string public constant PLP_LIQUIDATOR_UNAUTHORIZED = '83';
string public constant PLP_CALLER_NOT_STABLE_RATE_MANAGER = '84';
string public constant PLP_USER_UNAUTHORIZED = '85';
string public constant PLP_INVALID_PERMISSION_ADMIN = '86';
enum CollateralManagerErrors {
NO_ERROR,
NO_COLLATERAL_AVAILABLE,
COLLATERAL_CANNOT_BE_LIQUIDATED,
CURRRENCY_NOT_BORROWED,
HEALTH_FACTOR_ABOVE_THRESHOLD,
NOT_ENOUGH_LIQUIDITY,
NO_ACTIVE_RESERVE,
HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD,
INVALID_EQUAL_ASSETS_TO_SWAP,
FROZEN_RESERVE
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {BaseParaSwapSellAdapter} from './BaseParaSwapSellAdapter.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {IParaSwapAugustusRegistry} from '../interfaces/IParaSwapAugustusRegistry.sol';
import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {IERC20WithPermit} from '../interfaces/IERC20WithPermit.sol';
import {IParaSwapAugustus} from '../interfaces/IParaSwapAugustus.sol';
import {ReentrancyGuard} from '../dependencies/openzeppelin/contracts/ReentrancyGuard.sol';
/**
* @title ParaSwapLiquiditySwapAdapter
* @notice Adapter to swap liquidity using ParaSwap.
* @author Jason Raymond Bell
*/
contract ParaSwapLiquiditySwapAdapter is BaseParaSwapSellAdapter, ReentrancyGuard {
constructor(
ILendingPoolAddressesProvider addressesProvider,
IParaSwapAugustusRegistry augustusRegistry
) public BaseParaSwapSellAdapter(addressesProvider, augustusRegistry) {
// This is only required to initialize BaseParaSwapSellAdapter
}
/**
* @dev Swaps the received reserve amount from the flash loan into the asset specified in the params.
* The received funds from the swap are then deposited into the protocol on behalf of the user.
* The user should give this contract allowance to pull the ATokens in order to withdraw the underlying asset and repay the flash loan.
* @param assets Address of the underlying asset to be swapped from
* @param amounts Amount of the flash loan i.e. maximum amount to swap
* @param premiums Fee of the flash loan
* @param initiator Account that initiated the flash loan
* @param params Additional variadic field to include extra params. Expected parameters:
* address assetToSwapTo Address of the underlying asset to be swapped to and deposited
* uint256 minAmountToReceive Min amount to be received from the swap
* uint256 swapAllBalanceOffset Set to offset of fromAmount in Augustus calldata if wanting to swap all balance, otherwise 0
* bytes swapCalldata Calldata for ParaSwap's AugustusSwapper contract
* address augustus Address of ParaSwap's AugustusSwapper contract
* PermitSignature permitParams Struct containing the permit signatures, set to all zeroes if not used
*/
function executeOperation(
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata premiums,
address initiator,
bytes calldata params
) external override nonReentrant returns (bool) {
require(msg.sender == address(LENDING_POOL), 'CALLER_MUST_BE_LENDING_POOL');
require(
assets.length == 1 && amounts.length == 1 && premiums.length == 1,
'FLASHLOAN_MULTIPLE_ASSETS_NOT_SUPPORTED'
);
uint256 flashLoanAmount = amounts[0];
uint256 premium = premiums[0];
address initiatorLocal = initiator;
IERC20Detailed assetToSwapFrom = IERC20Detailed(assets[0]);
(
IERC20Detailed assetToSwapTo,
uint256 minAmountToReceive,
uint256 swapAllBalanceOffset,
bytes memory swapCalldata,
IParaSwapAugustus augustus,
PermitSignature memory permitParams
) = abi.decode(params, (
IERC20Detailed,
uint256,
uint256,
bytes,
IParaSwapAugustus,
PermitSignature
));
_swapLiquidity(
swapAllBalanceOffset,
swapCalldata,
augustus,
permitParams,
flashLoanAmount,
premium,
initiatorLocal,
assetToSwapFrom,
assetToSwapTo,
minAmountToReceive
);
return true;
}
/**
* @dev Swaps an amount of an asset to another and deposits the new asset amount on behalf of the user without using a flash loan.
* This method can be used when the temporary transfer of the collateral asset to this contract does not affect the user position.
* The user should give this contract allowance to pull the ATokens in order to withdraw the underlying asset and perform the swap.
* @param assetToSwapFrom Address of the underlying asset to be swapped from
* @param assetToSwapTo Address of the underlying asset to be swapped to and deposited
* @param amountToSwap Amount to be swapped, or maximum amount when swapping all balance
* @param minAmountToReceive Minimum amount to be received from the swap
* @param swapAllBalanceOffset Set to offset of fromAmount in Augustus calldata if wanting to swap all balance, otherwise 0
* @param swapCalldata Calldata for ParaSwap's AugustusSwapper contract
* @param augustus Address of ParaSwap's AugustusSwapper contract
* @param permitParams Struct containing the permit signatures, set to all zeroes if not used
*/
function swapAndDeposit(
IERC20Detailed assetToSwapFrom,
IERC20Detailed assetToSwapTo,
uint256 amountToSwap,
uint256 minAmountToReceive,
uint256 swapAllBalanceOffset,
bytes calldata swapCalldata,
IParaSwapAugustus augustus,
PermitSignature calldata permitParams
) external nonReentrant {
IERC20WithPermit aToken =
IERC20WithPermit(_getReserveData(address(assetToSwapFrom)).aTokenAddress);
if (swapAllBalanceOffset != 0) {
uint256 balance = aToken.balanceOf(msg.sender);
require(balance <= amountToSwap, 'INSUFFICIENT_AMOUNT_TO_SWAP');
amountToSwap = balance;
}
_pullATokenAndWithdraw(
address(assetToSwapFrom),
aToken,
msg.sender,
amountToSwap,
permitParams
);
uint256 amountReceived = _sellOnParaSwap(
swapAllBalanceOffset,
swapCalldata,
augustus,
assetToSwapFrom,
assetToSwapTo,
amountToSwap,
minAmountToReceive
);
assetToSwapTo.safeApprove(address(LENDING_POOL), 0);
assetToSwapTo.safeApprove(address(LENDING_POOL), amountReceived);
LENDING_POOL.deposit(address(assetToSwapTo), amountReceived, msg.sender, 0);
}
/**
* @dev Swaps an amount of an asset to another and deposits the funds on behalf of the initiator.
* @param swapAllBalanceOffset Set to offset of fromAmount in Augustus calldata if wanting to swap all balance, otherwise 0
* @param swapCalldata Calldata for ParaSwap's AugustusSwapper contract
* @param augustus Address of ParaSwap's AugustusSwapper contract
* @param permitParams Struct containing the permit signatures, set to all zeroes if not used
* @param flashLoanAmount Amount of the flash loan i.e. maximum amount to swap
* @param premium Fee of the flash loan
* @param initiator Account that initiated the flash loan
* @param assetToSwapFrom Address of the underyling asset to be swapped from
* @param assetToSwapTo Address of the underlying asset to be swapped to and deposited
* @param minAmountToReceive Min amount to be received from the swap
*/
function _swapLiquidity (
uint256 swapAllBalanceOffset,
bytes memory swapCalldata,
IParaSwapAugustus augustus,
PermitSignature memory permitParams,
uint256 flashLoanAmount,
uint256 premium,
address initiator,
IERC20Detailed assetToSwapFrom,
IERC20Detailed assetToSwapTo,
uint256 minAmountToReceive
) internal {
IERC20WithPermit aToken =
IERC20WithPermit(_getReserveData(address(assetToSwapFrom)).aTokenAddress);
uint256 amountToSwap = flashLoanAmount;
uint256 balance = aToken.balanceOf(initiator);
if (swapAllBalanceOffset != 0) {
uint256 balanceToSwap = balance.sub(premium);
require(balanceToSwap <= amountToSwap, 'INSUFFICIENT_AMOUNT_TO_SWAP');
amountToSwap = balanceToSwap;
} else {
require(balance >= amountToSwap.add(premium), 'INSUFFICIENT_ATOKEN_BALANCE');
}
uint256 amountReceived = _sellOnParaSwap(
swapAllBalanceOffset,
swapCalldata,
augustus,
assetToSwapFrom,
assetToSwapTo,
amountToSwap,
minAmountToReceive
);
assetToSwapTo.safeApprove(address(LENDING_POOL), 0);
assetToSwapTo.safeApprove(address(LENDING_POOL), amountReceived);
LENDING_POOL.deposit(address(assetToSwapTo), amountReceived, initiator, 0);
_pullATokenAndWithdraw(
address(assetToSwapFrom),
aToken,
initiator,
amountToSwap.add(premium),
permitParams
);
// Repay flash loan
assetToSwapFrom.safeApprove(address(LENDING_POOL), 0);
assetToSwapFrom.safeApprove(address(LENDING_POOL), flashLoanAmount.add(premium));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor () internal {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {IParaSwapAugustus} from '../../interfaces/IParaSwapAugustus.sol';
import {MockParaSwapTokenTransferProxy} from './MockParaSwapTokenTransferProxy.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
import {MintableERC20} from '../tokens/MintableERC20.sol';
contract MockParaSwapAugustus is IParaSwapAugustus {
MockParaSwapTokenTransferProxy immutable TOKEN_TRANSFER_PROXY;
bool _expectingSwap;
address _expectedFromToken;
address _expectedToToken;
uint256 _expectedFromAmountMin;
uint256 _expectedFromAmountMax;
uint256 _receivedAmount;
constructor() public {
TOKEN_TRANSFER_PROXY = new MockParaSwapTokenTransferProxy();
}
function getTokenTransferProxy() external view override returns (address) {
return address(TOKEN_TRANSFER_PROXY);
}
function expectSwap(
address fromToken,
address toToken,
uint256 fromAmountMin,
uint256 fromAmountMax,
uint256 receivedAmount
) external {
_expectingSwap = true;
_expectedFromToken = fromToken;
_expectedToToken = toToken;
_expectedFromAmountMin = fromAmountMin;
_expectedFromAmountMax = fromAmountMax;
_receivedAmount = receivedAmount;
}
function swap(
address fromToken,
address toToken,
uint256 fromAmount,
uint256 toAmount
) external returns (uint256) {
require(_expectingSwap, 'Not expecting swap');
require(fromToken == _expectedFromToken, 'Unexpected from token');
require(toToken == _expectedToToken, 'Unexpected to token');
require(fromAmount >= _expectedFromAmountMin && fromAmount <= _expectedFromAmountMax, 'From amount out of range');
require(_receivedAmount >= toAmount, 'Received amount of tokens are less than expected');
TOKEN_TRANSFER_PROXY.transferFrom(fromToken, msg.sender, address(this), fromAmount);
MintableERC20(toToken).mint(_receivedAmount);
IERC20(toToken).transfer(msg.sender, _receivedAmount);
_expectingSwap = false;
return _receivedAmount;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {Ownable} from '../../dependencies/openzeppelin/contracts/Ownable.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
contract MockParaSwapTokenTransferProxy is Ownable {
function transferFrom(
address token,
address from,
address to,
uint256 amount
) external onlyOwner {
IERC20(token).transferFrom(from, to, amount);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ERC20} from '../../dependencies/openzeppelin/contracts/ERC20.sol';
/**
* @title ERC20Mintable
* @dev ERC20 minting logic
*/
contract MintableERC20 is ERC20 {
constructor(
string memory name,
string memory symbol,
uint8 decimals
) public ERC20(name, symbol) {
_setupDecimals(decimals);
}
/**
* @dev Function to mint tokens
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(uint256 value) public returns (bool) {
_mint(_msgSender(), value);
return true;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import './Context.sol';
import './IERC20.sol';
import './SafeMath.sol';
import './Address.sol';
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(amount, 'ERC20: transfer amount exceeds allowance')
);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
'ERC20: decreased allowance below zero'
)
);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), 'ERC20: transfer from the zero address');
require(recipient != address(0), 'ERC20: transfer to the zero address');
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, 'ERC20: transfer amount exceeds balance');
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: mint to the zero address');
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: burn from the zero address');
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, 'ERC20: burn amount exceeds balance');
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), 'ERC20: approve from the zero address');
require(spender != address(0), 'ERC20: approve to the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IUniswapV2Router02} from '../../interfaces/IUniswapV2Router02.sol';
import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import {MintableERC20} from '../tokens/MintableERC20.sol';
contract MockUniswapV2Router02 is IUniswapV2Router02 {
mapping(address => uint256) internal _amountToReturn;
mapping(address => uint256) internal _amountToSwap;
mapping(address => mapping(address => mapping(uint256 => uint256))) internal _amountsIn;
mapping(address => mapping(address => mapping(uint256 => uint256))) internal _amountsOut;
uint256 internal defaultMockValue;
function setAmountToReturn(address reserve, uint256 amount) public {
_amountToReturn[reserve] = amount;
}
function setAmountToSwap(address reserve, uint256 amount) public {
_amountToSwap[reserve] = amount;
}
function swapExactTokensForTokens(
uint256 amountIn,
uint256, /* amountOutMin */
address[] calldata path,
address to,
uint256 /* deadline */
) external override returns (uint256[] memory amounts) {
IERC20(path[0]).transferFrom(msg.sender, address(this), amountIn);
MintableERC20(path[1]).mint(_amountToReturn[path[0]]);
IERC20(path[1]).transfer(to, _amountToReturn[path[0]]);
amounts = new uint256[](path.length);
amounts[0] = amountIn;
amounts[1] = _amountToReturn[path[0]];
}
function swapTokensForExactTokens(
uint256 amountOut,
uint256, /* amountInMax */
address[] calldata path,
address to,
uint256 /* deadline */
) external override returns (uint256[] memory amounts) {
IERC20(path[0]).transferFrom(msg.sender, address(this), _amountToSwap[path[0]]);
MintableERC20(path[1]).mint(amountOut);
IERC20(path[1]).transfer(to, amountOut);
amounts = new uint256[](path.length);
amounts[0] = _amountToSwap[path[0]];
amounts[1] = amountOut;
}
function setAmountOut(
uint256 amountIn,
address reserveIn,
address reserveOut,
uint256 amountOut
) public {
_amountsOut[reserveIn][reserveOut][amountIn] = amountOut;
}
function setAmountIn(
uint256 amountOut,
address reserveIn,
address reserveOut,
uint256 amountIn
) public {
_amountsIn[reserveIn][reserveOut][amountOut] = amountIn;
}
function setDefaultMockValue(uint256 value) public {
defaultMockValue = value;
}
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
override
returns (uint256[] memory)
{
uint256[] memory amounts = new uint256[](path.length);
amounts[0] = amountIn;
amounts[1] = _amountsOut[path[0]][path[1]][amountIn] > 0
? _amountsOut[path[0]][path[1]][amountIn]
: defaultMockValue;
return amounts;
}
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
override
returns (uint256[] memory)
{
uint256[] memory amounts = new uint256[](path.length);
amounts[0] = _amountsIn[path[0]][path[1]][amountOut] > 0
? _amountsIn[path[0]][path[1]][amountOut]
: defaultMockValue;
amounts[1] = amountOut;
return amounts;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
interface IUniswapV2Router02 {
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {BaseUniswapAdapter} from './BaseUniswapAdapter.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {IUniswapV2Router02} from '../interfaces/IUniswapV2Router02.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
/**
* @title UniswapRepayAdapter
* @notice Uniswap V2 Adapter to perform a repay of a debt with collateral.
* @author Aave
**/
contract UniswapRepayAdapter is BaseUniswapAdapter {
struct RepayParams {
address collateralAsset;
uint256 collateralAmount;
uint256 rateMode;
PermitSignature permitSignature;
bool useEthPath;
}
constructor(
ILendingPoolAddressesProvider addressesProvider,
IUniswapV2Router02 uniswapRouter,
address wethAddress
) public BaseUniswapAdapter(addressesProvider, uniswapRouter, wethAddress) {}
/**
* @dev Uses the received funds from the flash loan to repay a debt on the protocol on behalf of the user. Then pulls
* the collateral from the user and swaps it to the debt asset to repay the flash loan.
* The user should give this contract allowance to pull the ATokens in order to withdraw the underlying asset, swap it
* and repay the flash loan.
* Supports only one asset on the flash loan.
* @param assets Address of debt asset
* @param amounts Amount of the debt to be repaid
* @param premiums Fee of the flash loan
* @param initiator Address of the user
* @param params Additional variadic field to include extra params. Expected parameters:
* address collateralAsset Address of the reserve to be swapped
* uint256 collateralAmount Amount of reserve to be swapped
* uint256 rateMode Rate modes of the debt to be repaid
* uint256 permitAmount Amount for the permit signature
* uint256 deadline Deadline for the permit signature
* uint8 v V param for the permit signature
* bytes32 r R param for the permit signature
* bytes32 s S param for the permit signature
*/
function executeOperation(
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata premiums,
address initiator,
bytes calldata params
) external override returns (bool) {
require(msg.sender == address(LENDING_POOL), 'CALLER_MUST_BE_LENDING_POOL');
RepayParams memory decodedParams = _decodeParams(params);
_swapAndRepay(
decodedParams.collateralAsset,
assets[0],
amounts[0],
decodedParams.collateralAmount,
decodedParams.rateMode,
initiator,
premiums[0],
decodedParams.permitSignature,
decodedParams.useEthPath
);
return true;
}
/**
* @dev Swaps the user collateral for the debt asset and then repay the debt on the protocol on behalf of the user
* without using flash loans. This method can be used when the temporary transfer of the collateral asset to this
* contract does not affect the user position.
* The user should give this contract allowance to pull the ATokens in order to withdraw the underlying asset
* @param collateralAsset Address of asset to be swapped
* @param debtAsset Address of debt asset
* @param collateralAmount Amount of the collateral to be swapped
* @param debtRepayAmount Amount of the debt to be repaid
* @param debtRateMode Rate mode of the debt to be repaid
* @param permitSignature struct containing the permit signature
* @param useEthPath struct containing the permit signature
*/
function swapAndRepay(
address collateralAsset,
address debtAsset,
uint256 collateralAmount,
uint256 debtRepayAmount,
uint256 debtRateMode,
PermitSignature calldata permitSignature,
bool useEthPath
) external {
DataTypes.ReserveData memory collateralReserveData = _getReserveData(collateralAsset);
DataTypes.ReserveData memory debtReserveData = _getReserveData(debtAsset);
address debtToken =
DataTypes.InterestRateMode(debtRateMode) == DataTypes.InterestRateMode.STABLE
? debtReserveData.stableDebtTokenAddress
: debtReserveData.variableDebtTokenAddress;
uint256 currentDebt = IERC20(debtToken).balanceOf(msg.sender);
uint256 amountToRepay = debtRepayAmount <= currentDebt ? debtRepayAmount : currentDebt;
if (collateralAsset != debtAsset) {
uint256 maxCollateralToSwap = collateralAmount;
if (amountToRepay < debtRepayAmount) {
maxCollateralToSwap = maxCollateralToSwap.mul(amountToRepay).div(debtRepayAmount);
}
// Get exact collateral needed for the swap to avoid leftovers
uint256[] memory amounts =
_getAmountsIn(collateralAsset, debtAsset, amountToRepay, useEthPath);
require(amounts[0] <= maxCollateralToSwap, 'slippage too high');
// Pull aTokens from user
_pullAToken(
collateralAsset,
collateralReserveData.aTokenAddress,
msg.sender,
amounts[0],
permitSignature
);
// Swap collateral for debt asset
_swapTokensForExactTokens(collateralAsset, debtAsset, amounts[0], amountToRepay, useEthPath);
} else {
// Pull aTokens from user
_pullAToken(
collateralAsset,
collateralReserveData.aTokenAddress,
msg.sender,
amountToRepay,
permitSignature
);
}
// Repay debt. Approves 0 first to comply with tokens that implement the anti frontrunning approval fix
IERC20(debtAsset).safeApprove(address(LENDING_POOL), 0);
IERC20(debtAsset).safeApprove(address(LENDING_POOL), amountToRepay);
LENDING_POOL.repay(debtAsset, amountToRepay, debtRateMode, msg.sender);
}
/**
* @dev Perform the repay of the debt, pulls the initiator collateral and swaps to repay the flash loan
*
* @param collateralAsset Address of token to be swapped
* @param debtAsset Address of debt token to be received from the swap
* @param amount Amount of the debt to be repaid
* @param collateralAmount Amount of the reserve to be swapped
* @param rateMode Rate mode of the debt to be repaid
* @param initiator Address of the user
* @param premium Fee of the flash loan
* @param permitSignature struct containing the permit signature
*/
function _swapAndRepay(
address collateralAsset,
address debtAsset,
uint256 amount,
uint256 collateralAmount,
uint256 rateMode,
address initiator,
uint256 premium,
PermitSignature memory permitSignature,
bool useEthPath
) internal {
DataTypes.ReserveData memory collateralReserveData = _getReserveData(collateralAsset);
// Repay debt. Approves for 0 first to comply with tokens that implement the anti frontrunning approval fix.
IERC20(debtAsset).safeApprove(address(LENDING_POOL), 0);
IERC20(debtAsset).safeApprove(address(LENDING_POOL), amount);
uint256 repaidAmount = IERC20(debtAsset).balanceOf(address(this));
LENDING_POOL.repay(debtAsset, amount, rateMode, initiator);
repaidAmount = repaidAmount.sub(IERC20(debtAsset).balanceOf(address(this)));
if (collateralAsset != debtAsset) {
uint256 maxCollateralToSwap = collateralAmount;
if (repaidAmount < amount) {
maxCollateralToSwap = maxCollateralToSwap.mul(repaidAmount).div(amount);
}
uint256 neededForFlashLoanDebt = repaidAmount.add(premium);
uint256[] memory amounts =
_getAmountsIn(collateralAsset, debtAsset, neededForFlashLoanDebt, useEthPath);
require(amounts[0] <= maxCollateralToSwap, 'slippage too high');
// Pull aTokens from user
_pullAToken(
collateralAsset,
collateralReserveData.aTokenAddress,
initiator,
amounts[0],
permitSignature
);
// Swap collateral asset to the debt asset
_swapTokensForExactTokens(
collateralAsset,
debtAsset,
amounts[0],
neededForFlashLoanDebt,
useEthPath
);
} else {
// Pull aTokens from user
_pullAToken(
collateralAsset,
collateralReserveData.aTokenAddress,
initiator,
repaidAmount.add(premium),
permitSignature
);
}
// Repay flashloan. Approves for 0 first to comply with tokens that implement the anti frontrunning approval fix.
IERC20(debtAsset).safeApprove(address(LENDING_POOL), 0);
IERC20(debtAsset).safeApprove(address(LENDING_POOL), amount.add(premium));
}
/**
* @dev Decodes debt information encoded in the flash loan params
* @param params Additional variadic field to include extra params. Expected parameters:
* address collateralAsset Address of the reserve to be swapped
* uint256 collateralAmount Amount of reserve to be swapped
* uint256 rateMode Rate modes of the debt to be repaid
* uint256 permitAmount Amount for the permit signature
* uint256 deadline Deadline for the permit signature
* uint8 v V param for the permit signature
* bytes32 r R param for the permit signature
* bytes32 s S param for the permit signature
* bool useEthPath use WETH path route
* @return RepayParams struct containing decoded params
*/
function _decodeParams(bytes memory params) internal pure returns (RepayParams memory) {
(
address collateralAsset,
uint256 collateralAmount,
uint256 rateMode,
uint256 permitAmount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s,
bool useEthPath
) =
abi.decode(
params,
(address, uint256, uint256, uint256, uint256, uint8, bytes32, bytes32, bool)
);
return
RepayParams(
collateralAsset,
collateralAmount,
rateMode,
PermitSignature(permitAmount, deadline, v, r, s),
useEthPath
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {PercentageMath} from '../protocol/libraries/math/PercentageMath.sol';
import {SafeMath} from '../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {SafeERC20} from '../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
import {IUniswapV2Router02} from '../interfaces/IUniswapV2Router02.sol';
import {IPriceOracleGetter} from '../interfaces/IPriceOracleGetter.sol';
import {IERC20WithPermit} from '../interfaces/IERC20WithPermit.sol';
import {FlashLoanReceiverBase} from '../flashloan/base/FlashLoanReceiverBase.sol';
import {IBaseUniswapAdapter} from './interfaces/IBaseUniswapAdapter.sol';
/**
* @title BaseUniswapAdapter
* @notice Implements the logic for performing assets swaps in Uniswap V2
* @author Aave
**/
abstract contract BaseUniswapAdapter is FlashLoanReceiverBase, IBaseUniswapAdapter, Ownable {
using SafeMath for uint256;
using PercentageMath for uint256;
using SafeERC20 for IERC20;
// Max slippage percent allowed
uint256 public constant override MAX_SLIPPAGE_PERCENT = 3000; // 30%
// FLash Loan fee set in lending pool
uint256 public constant override FLASHLOAN_PREMIUM_TOTAL = 9;
// USD oracle asset address
address public constant override USD_ADDRESS = 0x10F7Fc1F91Ba351f9C629c5947AD69bD03C05b96;
address public immutable override WETH_ADDRESS;
IPriceOracleGetter public immutable override ORACLE;
IUniswapV2Router02 public immutable override UNISWAP_ROUTER;
constructor(
ILendingPoolAddressesProvider addressesProvider,
IUniswapV2Router02 uniswapRouter,
address wethAddress
) public FlashLoanReceiverBase(addressesProvider) {
ORACLE = IPriceOracleGetter(addressesProvider.getPriceOracle());
UNISWAP_ROUTER = uniswapRouter;
WETH_ADDRESS = wethAddress;
}
/**
* @dev Given an input asset amount, returns the maximum output amount of the other asset and the prices
* @param amountIn Amount of reserveIn
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @return uint256 Amount out of the reserveOut
* @return uint256 The price of out amount denominated in the reserveIn currency (18 decimals)
* @return uint256 In amount of reserveIn value denominated in USD (8 decimals)
* @return uint256 Out amount of reserveOut value denominated in USD (8 decimals)
*/
function getAmountsOut(
uint256 amountIn,
address reserveIn,
address reserveOut
)
external
view
override
returns (
uint256,
uint256,
uint256,
uint256,
address[] memory
)
{
AmountCalc memory results = _getAmountsOutData(reserveIn, reserveOut, amountIn);
return (
results.calculatedAmount,
results.relativePrice,
results.amountInUsd,
results.amountOutUsd,
results.path
);
}
/**
* @dev Returns the minimum input asset amount required to buy the given output asset amount and the prices
* @param amountOut Amount of reserveOut
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @return uint256 Amount in of the reserveIn
* @return uint256 The price of in amount denominated in the reserveOut currency (18 decimals)
* @return uint256 In amount of reserveIn value denominated in USD (8 decimals)
* @return uint256 Out amount of reserveOut value denominated in USD (8 decimals)
*/
function getAmountsIn(
uint256 amountOut,
address reserveIn,
address reserveOut
)
external
view
override
returns (
uint256,
uint256,
uint256,
uint256,
address[] memory
)
{
AmountCalc memory results = _getAmountsInData(reserveIn, reserveOut, amountOut);
return (
results.calculatedAmount,
results.relativePrice,
results.amountInUsd,
results.amountOutUsd,
results.path
);
}
/**
* @dev Swaps an exact `amountToSwap` of an asset to another
* @param assetToSwapFrom Origin asset
* @param assetToSwapTo Destination asset
* @param amountToSwap Exact amount of `assetToSwapFrom` to be swapped
* @param minAmountOut the min amount of `assetToSwapTo` to be received from the swap
* @return the amount received from the swap
*/
function _swapExactTokensForTokens(
address assetToSwapFrom,
address assetToSwapTo,
uint256 amountToSwap,
uint256 minAmountOut,
bool useEthPath
) internal returns (uint256) {
uint256 fromAssetDecimals = _getDecimals(assetToSwapFrom);
uint256 toAssetDecimals = _getDecimals(assetToSwapTo);
uint256 fromAssetPrice = _getPrice(assetToSwapFrom);
uint256 toAssetPrice = _getPrice(assetToSwapTo);
uint256 expectedMinAmountOut =
amountToSwap
.mul(fromAssetPrice.mul(10**toAssetDecimals))
.div(toAssetPrice.mul(10**fromAssetDecimals))
.percentMul(PercentageMath.PERCENTAGE_FACTOR.sub(MAX_SLIPPAGE_PERCENT));
require(expectedMinAmountOut < minAmountOut, 'minAmountOut exceed max slippage');
// Approves the transfer for the swap. Approves for 0 first to comply with tokens that implement the anti frontrunning approval fix.
IERC20(assetToSwapFrom).safeApprove(address(UNISWAP_ROUTER), 0);
IERC20(assetToSwapFrom).safeApprove(address(UNISWAP_ROUTER), amountToSwap);
address[] memory path;
if (useEthPath) {
path = new address[](3);
path[0] = assetToSwapFrom;
path[1] = WETH_ADDRESS;
path[2] = assetToSwapTo;
} else {
path = new address[](2);
path[0] = assetToSwapFrom;
path[1] = assetToSwapTo;
}
uint256[] memory amounts =
UNISWAP_ROUTER.swapExactTokensForTokens(
amountToSwap,
minAmountOut,
path,
address(this),
block.timestamp
);
emit Swapped(assetToSwapFrom, assetToSwapTo, amounts[0], amounts[amounts.length - 1]);
return amounts[amounts.length - 1];
}
/**
* @dev Receive an exact amount `amountToReceive` of `assetToSwapTo` tokens for as few `assetToSwapFrom` tokens as
* possible.
* @param assetToSwapFrom Origin asset
* @param assetToSwapTo Destination asset
* @param maxAmountToSwap Max amount of `assetToSwapFrom` allowed to be swapped
* @param amountToReceive Exact amount of `assetToSwapTo` to receive
* @return the amount swapped
*/
function _swapTokensForExactTokens(
address assetToSwapFrom,
address assetToSwapTo,
uint256 maxAmountToSwap,
uint256 amountToReceive,
bool useEthPath
) internal returns (uint256) {
uint256 fromAssetDecimals = _getDecimals(assetToSwapFrom);
uint256 toAssetDecimals = _getDecimals(assetToSwapTo);
uint256 fromAssetPrice = _getPrice(assetToSwapFrom);
uint256 toAssetPrice = _getPrice(assetToSwapTo);
uint256 expectedMaxAmountToSwap =
amountToReceive
.mul(toAssetPrice.mul(10**fromAssetDecimals))
.div(fromAssetPrice.mul(10**toAssetDecimals))
.percentMul(PercentageMath.PERCENTAGE_FACTOR.add(MAX_SLIPPAGE_PERCENT));
require(maxAmountToSwap < expectedMaxAmountToSwap, 'maxAmountToSwap exceed max slippage');
// Approves the transfer for the swap. Approves for 0 first to comply with tokens that implement the anti frontrunning approval fix.
IERC20(assetToSwapFrom).safeApprove(address(UNISWAP_ROUTER), 0);
IERC20(assetToSwapFrom).safeApprove(address(UNISWAP_ROUTER), maxAmountToSwap);
address[] memory path;
if (useEthPath) {
path = new address[](3);
path[0] = assetToSwapFrom;
path[1] = WETH_ADDRESS;
path[2] = assetToSwapTo;
} else {
path = new address[](2);
path[0] = assetToSwapFrom;
path[1] = assetToSwapTo;
}
uint256[] memory amounts =
UNISWAP_ROUTER.swapTokensForExactTokens(
amountToReceive,
maxAmountToSwap,
path,
address(this),
block.timestamp
);
emit Swapped(assetToSwapFrom, assetToSwapTo, amounts[0], amounts[amounts.length - 1]);
return amounts[0];
}
/**
* @dev Get the price of the asset from the oracle denominated in eth
* @param asset address
* @return eth price for the asset
*/
function _getPrice(address asset) internal view returns (uint256) {
return ORACLE.getAssetPrice(asset);
}
/**
* @dev Get the decimals of an asset
* @return number of decimals of the asset
*/
function _getDecimals(address asset) internal view returns (uint256) {
return IERC20Detailed(asset).decimals();
}
/**
* @dev Get the aToken associated to the asset
* @return address of the aToken
*/
function _getReserveData(address asset) internal view returns (DataTypes.ReserveData memory) {
return LENDING_POOL.getReserveData(asset);
}
/**
* @dev Pull the ATokens from the user
* @param reserve address of the asset
* @param reserveAToken address of the aToken of the reserve
* @param user address
* @param amount of tokens to be transferred to the contract
* @param permitSignature struct containing the permit signature
*/
function _pullAToken(
address reserve,
address reserveAToken,
address user,
uint256 amount,
PermitSignature memory permitSignature
) internal {
if (_usePermit(permitSignature)) {
IERC20WithPermit(reserveAToken).permit(
user,
address(this),
permitSignature.amount,
permitSignature.deadline,
permitSignature.v,
permitSignature.r,
permitSignature.s
);
}
// transfer from user to adapter
IERC20(reserveAToken).safeTransferFrom(user, address(this), amount);
// withdraw reserve
LENDING_POOL.withdraw(reserve, amount, address(this));
}
/**
* @dev Tells if the permit method should be called by inspecting if there is a valid signature.
* If signature params are set to 0, then permit won't be called.
* @param signature struct containing the permit signature
* @return whether or not permit should be called
*/
function _usePermit(PermitSignature memory signature) internal pure returns (bool) {
return
!(uint256(signature.deadline) == uint256(signature.v) && uint256(signature.deadline) == 0);
}
/**
* @dev Calculates the value denominated in USD
* @param reserve Address of the reserve
* @param amount Amount of the reserve
* @param decimals Decimals of the reserve
* @return whether or not permit should be called
*/
function _calcUsdValue(
address reserve,
uint256 amount,
uint256 decimals
) internal view returns (uint256) {
uint256 ethUsdPrice = _getPrice(USD_ADDRESS);
uint256 reservePrice = _getPrice(reserve);
return amount.mul(reservePrice).div(10**decimals).mul(ethUsdPrice).div(10**18);
}
/**
* @dev Given an input asset amount, returns the maximum output amount of the other asset
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @param amountIn Amount of reserveIn
* @return Struct containing the following information:
* uint256 Amount out of the reserveOut
* uint256 The price of out amount denominated in the reserveIn currency (18 decimals)
* uint256 In amount of reserveIn value denominated in USD (8 decimals)
* uint256 Out amount of reserveOut value denominated in USD (8 decimals)
*/
function _getAmountsOutData(
address reserveIn,
address reserveOut,
uint256 amountIn
) internal view returns (AmountCalc memory) {
// Subtract flash loan fee
uint256 finalAmountIn = amountIn.sub(amountIn.mul(FLASHLOAN_PREMIUM_TOTAL).div(10000));
if (reserveIn == reserveOut) {
uint256 reserveDecimals = _getDecimals(reserveIn);
address[] memory path = new address[](1);
path[0] = reserveIn;
return
AmountCalc(
finalAmountIn,
finalAmountIn.mul(10**18).div(amountIn),
_calcUsdValue(reserveIn, amountIn, reserveDecimals),
_calcUsdValue(reserveIn, finalAmountIn, reserveDecimals),
path
);
}
address[] memory simplePath = new address[](2);
simplePath[0] = reserveIn;
simplePath[1] = reserveOut;
uint256[] memory amountsWithoutWeth;
uint256[] memory amountsWithWeth;
address[] memory pathWithWeth = new address[](3);
if (reserveIn != WETH_ADDRESS && reserveOut != WETH_ADDRESS) {
pathWithWeth[0] = reserveIn;
pathWithWeth[1] = WETH_ADDRESS;
pathWithWeth[2] = reserveOut;
try UNISWAP_ROUTER.getAmountsOut(finalAmountIn, pathWithWeth) returns (
uint256[] memory resultsWithWeth
) {
amountsWithWeth = resultsWithWeth;
} catch {
amountsWithWeth = new uint256[](3);
}
} else {
amountsWithWeth = new uint256[](3);
}
uint256 bestAmountOut;
try UNISWAP_ROUTER.getAmountsOut(finalAmountIn, simplePath) returns (
uint256[] memory resultAmounts
) {
amountsWithoutWeth = resultAmounts;
bestAmountOut = (amountsWithWeth[2] > amountsWithoutWeth[1])
? amountsWithWeth[2]
: amountsWithoutWeth[1];
} catch {
amountsWithoutWeth = new uint256[](2);
bestAmountOut = amountsWithWeth[2];
}
uint256 reserveInDecimals = _getDecimals(reserveIn);
uint256 reserveOutDecimals = _getDecimals(reserveOut);
uint256 outPerInPrice =
finalAmountIn.mul(10**18).mul(10**reserveOutDecimals).div(
bestAmountOut.mul(10**reserveInDecimals)
);
return
AmountCalc(
bestAmountOut,
outPerInPrice,
_calcUsdValue(reserveIn, amountIn, reserveInDecimals),
_calcUsdValue(reserveOut, bestAmountOut, reserveOutDecimals),
(bestAmountOut == 0) ? new address[](2) : (bestAmountOut == amountsWithoutWeth[1])
? simplePath
: pathWithWeth
);
}
/**
* @dev Returns the minimum input asset amount required to buy the given output asset amount
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @param amountOut Amount of reserveOut
* @return Struct containing the following information:
* uint256 Amount in of the reserveIn
* uint256 The price of in amount denominated in the reserveOut currency (18 decimals)
* uint256 In amount of reserveIn value denominated in USD (8 decimals)
* uint256 Out amount of reserveOut value denominated in USD (8 decimals)
*/
function _getAmountsInData(
address reserveIn,
address reserveOut,
uint256 amountOut
) internal view returns (AmountCalc memory) {
if (reserveIn == reserveOut) {
// Add flash loan fee
uint256 amountIn = amountOut.add(amountOut.mul(FLASHLOAN_PREMIUM_TOTAL).div(10000));
uint256 reserveDecimals = _getDecimals(reserveIn);
address[] memory path = new address[](1);
path[0] = reserveIn;
return
AmountCalc(
amountIn,
amountOut.mul(10**18).div(amountIn),
_calcUsdValue(reserveIn, amountIn, reserveDecimals),
_calcUsdValue(reserveIn, amountOut, reserveDecimals),
path
);
}
(uint256[] memory amounts, address[] memory path) =
_getAmountsInAndPath(reserveIn, reserveOut, amountOut);
// Add flash loan fee
uint256 finalAmountIn = amounts[0].add(amounts[0].mul(FLASHLOAN_PREMIUM_TOTAL).div(10000));
uint256 reserveInDecimals = _getDecimals(reserveIn);
uint256 reserveOutDecimals = _getDecimals(reserveOut);
uint256 inPerOutPrice =
amountOut.mul(10**18).mul(10**reserveInDecimals).div(
finalAmountIn.mul(10**reserveOutDecimals)
);
return
AmountCalc(
finalAmountIn,
inPerOutPrice,
_calcUsdValue(reserveIn, finalAmountIn, reserveInDecimals),
_calcUsdValue(reserveOut, amountOut, reserveOutDecimals),
path
);
}
/**
* @dev Calculates the input asset amount required to buy the given output asset amount
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @param amountOut Amount of reserveOut
* @return uint256[] amounts Array containing the amountIn and amountOut for a swap
*/
function _getAmountsInAndPath(
address reserveIn,
address reserveOut,
uint256 amountOut
) internal view returns (uint256[] memory, address[] memory) {
address[] memory simplePath = new address[](2);
simplePath[0] = reserveIn;
simplePath[1] = reserveOut;
uint256[] memory amountsWithoutWeth;
uint256[] memory amountsWithWeth;
address[] memory pathWithWeth = new address[](3);
if (reserveIn != WETH_ADDRESS && reserveOut != WETH_ADDRESS) {
pathWithWeth[0] = reserveIn;
pathWithWeth[1] = WETH_ADDRESS;
pathWithWeth[2] = reserveOut;
try UNISWAP_ROUTER.getAmountsIn(amountOut, pathWithWeth) returns (
uint256[] memory resultsWithWeth
) {
amountsWithWeth = resultsWithWeth;
} catch {
amountsWithWeth = new uint256[](3);
}
} else {
amountsWithWeth = new uint256[](3);
}
try UNISWAP_ROUTER.getAmountsIn(amountOut, simplePath) returns (
uint256[] memory resultAmounts
) {
amountsWithoutWeth = resultAmounts;
return
(amountsWithWeth[0] < amountsWithoutWeth[0] && amountsWithWeth[0] != 0)
? (amountsWithWeth, pathWithWeth)
: (amountsWithoutWeth, simplePath);
} catch {
return (amountsWithWeth, pathWithWeth);
}
}
/**
* @dev Calculates the input asset amount required to buy the given output asset amount
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @param amountOut Amount of reserveOut
* @return uint256[] amounts Array containing the amountIn and amountOut for a swap
*/
function _getAmountsIn(
address reserveIn,
address reserveOut,
uint256 amountOut,
bool useEthPath
) internal view returns (uint256[] memory) {
address[] memory path;
if (useEthPath) {
path = new address[](3);
path[0] = reserveIn;
path[1] = WETH_ADDRESS;
path[2] = reserveOut;
} else {
path = new address[](2);
path[0] = reserveIn;
path[1] = reserveOut;
}
return UNISWAP_ROUTER.getAmountsIn(amountOut, path);
}
/**
* @dev Emergency rescue for token stucked on this contract, as failsafe mechanism
* - Funds should never remain in this contract more time than during transactions
* - Only callable by the owner
**/
function rescueTokens(IERC20 token) external onlyOwner {
token.transfer(owner(), token.balanceOf(address(this)));
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {IPriceOracleGetter} from '../../interfaces/IPriceOracleGetter.sol';
import {IUniswapV2Router02} from '../../interfaces/IUniswapV2Router02.sol';
interface IBaseUniswapAdapter {
event Swapped(address fromAsset, address toAsset, uint256 fromAmount, uint256 receivedAmount);
struct PermitSignature {
uint256 amount;
uint256 deadline;
uint8 v;
bytes32 r;
bytes32 s;
}
struct AmountCalc {
uint256 calculatedAmount;
uint256 relativePrice;
uint256 amountInUsd;
uint256 amountOutUsd;
address[] path;
}
function WETH_ADDRESS() external returns (address);
function MAX_SLIPPAGE_PERCENT() external returns (uint256);
function FLASHLOAN_PREMIUM_TOTAL() external returns (uint256);
function USD_ADDRESS() external returns (address);
function ORACLE() external returns (IPriceOracleGetter);
function UNISWAP_ROUTER() external returns (IUniswapV2Router02);
/**
* @dev Given an input asset amount, returns the maximum output amount of the other asset and the prices
* @param amountIn Amount of reserveIn
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @return uint256 Amount out of the reserveOut
* @return uint256 The price of out amount denominated in the reserveIn currency (18 decimals)
* @return uint256 In amount of reserveIn value denominated in USD (8 decimals)
* @return uint256 Out amount of reserveOut value denominated in USD (8 decimals)
* @return address[] The exchange path
*/
function getAmountsOut(
uint256 amountIn,
address reserveIn,
address reserveOut
)
external
view
returns (
uint256,
uint256,
uint256,
uint256,
address[] memory
);
/**
* @dev Returns the minimum input asset amount required to buy the given output asset amount and the prices
* @param amountOut Amount of reserveOut
* @param reserveIn Address of the asset to be swap from
* @param reserveOut Address of the asset to be swap to
* @return uint256 Amount in of the reserveIn
* @return uint256 The price of in amount denominated in the reserveOut currency (18 decimals)
* @return uint256 In amount of reserveIn value denominated in USD (8 decimals)
* @return uint256 Out amount of reserveOut value denominated in USD (8 decimals)
* @return address[] The exchange path
*/
function getAmountsIn(
uint256 amountOut,
address reserveIn,
address reserveOut
)
external
view
returns (
uint256,
uint256,
uint256,
uint256,
address[] memory
);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {DebtTokenBase} from './DebtTokenBase.sol';
import {ILendingPool} from '../../../interfaces/ILendingPool.sol';
import {
VersionedInitializable
} from '../../libraries/aave-upgradeability/VersionedInitializable.sol';
import {IncentivizedERC20} from '../IncentivizedERC20.sol';
import {Errors} from '../../libraries/helpers/Errors.sol';
import {IPermissionManager} from '../../../interfaces/IPermissionManager.sol';
import {DataTypes} from '../../libraries/types/DataTypes.sol';
/**
* @title PermissionedDebtTokenBase
* @notice Base contract for different types of debt tokens, like StableDebtToken or VariableDebtToken. Includes permissioned credit delegation
* @author Aave
*/
abstract contract PermissionedDebtTokenBase is DebtTokenBase
{
//identifier for the permission manager contract in the addresses provider
bytes32 public constant PERMISSION_MANAGER = keccak256('PERMISSION_MANAGER');
modifier onlyBorrowers {
IPermissionManager permissionManager =
IPermissionManager(_getLendingPool().getAddressesProvider().getAddress(PERMISSION_MANAGER));
require(
permissionManager.isInRole(_msgSender(), uint256(DataTypes.Roles.BORROWER)),
Errors.PLP_BORROWER_UNAUTHORIZED
);
_;
}
/**
* @dev delegates borrowing power to a user on the specific debt token
* @param delegatee the address receiving the delegated borrowing power
* @param amount the maximum amount being delegated. Delegation will still
* respect the liquidation constraints (even if delegated, a delegatee cannot
* force a delegator HF to go below 1)
**/
function approveDelegation(address delegatee, uint256 amount) public override onlyBorrowers {
super.approveDelegation(delegatee, amount);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ILendingPool} from '../../../interfaces/ILendingPool.sol';
import {ICreditDelegationToken} from '../../../interfaces/ICreditDelegationToken.sol';
import {
VersionedInitializable
} from '../../libraries/aave-upgradeability/VersionedInitializable.sol';
import {IncentivizedERC20} from '../IncentivizedERC20.sol';
import {Errors} from '../../libraries/helpers/Errors.sol';
/**
* @title DebtTokenBase
* @notice Base contract for different types of debt tokens, like StableDebtToken or VariableDebtToken
* @author Aave
*/
abstract contract DebtTokenBase is
IncentivizedERC20('DEBTTOKEN_IMPL', 'DEBTTOKEN_IMPL', 0),
VersionedInitializable,
ICreditDelegationToken
{
mapping(address => mapping(address => uint256)) internal _borrowAllowances;
/**
* @dev Only lending pool can call functions marked by this modifier
**/
modifier onlyLendingPool {
require(_msgSender() == address(_getLendingPool()), Errors.CT_CALLER_MUST_BE_LENDING_POOL);
_;
}
/**
* @dev delegates borrowing power to a user on the specific debt token
* @param delegatee the address receiving the delegated borrowing power
* @param amount the maximum amount being delegated. Delegation will still
* respect the liquidation constraints (even if delegated, a delegatee cannot
* force a delegator HF to go below 1)
**/
function approveDelegation(address delegatee, uint256 amount) public virtual override {
_borrowAllowances[_msgSender()][delegatee] = amount;
emit BorrowAllowanceDelegated(_msgSender(), delegatee, _getUnderlyingAssetAddress(), amount);
}
/**
* @dev returns the borrow allowance of the user
* @param fromUser The user to giving allowance
* @param toUser The user to give allowance to
* @return the current allowance of toUser
**/
function borrowAllowance(address fromUser, address toUser)
external
view
override
returns (uint256)
{
return _borrowAllowances[fromUser][toUser];
}
/**
* @dev Being non transferrable, the debt token does not implement any of the
* standard ERC20 functions for transfer and allowance.
**/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
recipient;
amount;
revert('TRANSFER_NOT_SUPPORTED');
}
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
owner;
spender;
revert('ALLOWANCE_NOT_SUPPORTED');
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
spender;
amount;
revert('APPROVAL_NOT_SUPPORTED');
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
sender;
recipient;
amount;
revert('TRANSFER_NOT_SUPPORTED');
}
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
override
returns (bool)
{
spender;
addedValue;
revert('ALLOWANCE_NOT_SUPPORTED');
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
override
returns (bool)
{
spender;
subtractedValue;
revert('ALLOWANCE_NOT_SUPPORTED');
}
function _decreaseBorrowAllowance(
address delegator,
address delegatee,
uint256 amount
) internal {
uint256 newAllowance =
_borrowAllowances[delegator][delegatee].sub(amount, Errors.BORROW_ALLOWANCE_NOT_ENOUGH);
_borrowAllowances[delegator][delegatee] = newAllowance;
emit BorrowAllowanceDelegated(delegator, delegatee, _getUnderlyingAssetAddress(), newAllowance);
}
function _getUnderlyingAssetAddress() internal view virtual returns (address);
function _getLendingPool() internal view virtual returns (ILendingPool);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title VersionedInitializable
*
* @dev Helper contract to implement initializer functions. To use it, replace
* the constructor with a function that has the `initializer` modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*
* @author Aave, inspired by the OpenZeppelin Initializable contract
*/
abstract contract VersionedInitializable {
/**
* @dev Indicates that the contract has been initialized.
*/
uint256 private lastInitializedRevision = 0;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
uint256 revision = getRevision();
require(
initializing || isConstructor() || revision > lastInitializedRevision,
'Contract instance has already been initialized'
);
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
lastInitializedRevision = revision;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/**
* @dev returns the revision number of the contract
* Needs to be defined in the inherited class as a constant.
**/
function getRevision() internal pure virtual returns (uint256);
/**
* @dev Returns true if and only if the function is running in the constructor
**/
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
uint256 cs;
//solium-disable-next-line
assembly {
cs := extcodesize(address())
}
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Context} from '../../dependencies/openzeppelin/contracts/Context.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
import {IERC20Detailed} from '../../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {SafeMath} from '../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
/**
* @title ERC20
* @notice Basic ERC20 implementation
* @author Aave, inspired by the Openzeppelin ERC20 implementation
**/
abstract contract IncentivizedERC20 is Context, IERC20, IERC20Detailed {
using SafeMath for uint256;
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 internal _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(
string memory name,
string memory symbol,
uint8 decimals
) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return The name of the token
**/
function name() public view override returns (string memory) {
return _name;
}
/**
* @return The symbol of the token
**/
function symbol() public view override returns (string memory) {
return _symbol;
}
/**
* @return The decimals of the token
**/
function decimals() public view override returns (uint8) {
return _decimals;
}
/**
* @return The total supply of the token
**/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @return The balance of the token
**/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @return Abstract function implemented by the child aToken/debtToken.
* Done this way in order to not break compatibility with previous versions of aTokens/debtTokens
**/
function _getIncentivesController() internal view virtual returns(IAaveIncentivesController);
/**
* @dev Executes a transfer of tokens from _msgSender() to recipient
* @param recipient The recipient of the tokens
* @param amount The amount of tokens being transferred
* @return `true` if the transfer succeeds, `false` otherwise
**/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
emit Transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev Returns the allowance of spender on the tokens owned by owner
* @param owner The owner of the tokens
* @param spender The user allowed to spend the owner's tokens
* @return The amount of owner's tokens spender is allowed to spend
**/
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev Allows `spender` to spend the tokens owned by _msgSender()
* @param spender The user allowed to spend _msgSender() tokens
* @return `true`
**/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev Executes a transfer of token from sender to recipient, if _msgSender() is allowed to do so
* @param sender The owner of the tokens
* @param recipient The recipient of the tokens
* @param amount The amount of tokens being transferred
* @return `true` if the transfer succeeds, `false` otherwise
**/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(amount, 'ERC20: transfer amount exceeds allowance')
);
emit Transfer(sender, recipient, amount);
return true;
}
/**
* @dev Increases the allowance of spender to spend _msgSender() tokens
* @param spender The user allowed to spend on behalf of _msgSender()
* @param addedValue The amount being added to the allowance
* @return `true`
**/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Decreases the allowance of spender to spend _msgSender() tokens
* @param spender The user allowed to spend on behalf of _msgSender()
* @param subtractedValue The amount being subtracted to the allowance
* @return `true`
**/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
'ERC20: decreased allowance below zero'
)
);
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), 'ERC20: transfer from the zero address');
require(recipient != address(0), 'ERC20: transfer to the zero address');
_beforeTokenTransfer(sender, recipient, amount);
uint256 oldSenderBalance = _balances[sender];
_balances[sender] = oldSenderBalance.sub(amount, 'ERC20: transfer amount exceeds balance');
uint256 oldRecipientBalance = _balances[recipient];
_balances[recipient] = _balances[recipient].add(amount);
if (address(_getIncentivesController()) != address(0)) {
uint256 currentTotalSupply = _totalSupply;
_getIncentivesController().handleAction(sender, currentTotalSupply, oldSenderBalance);
if (sender != recipient) {
_getIncentivesController().handleAction(recipient, currentTotalSupply, oldRecipientBalance);
}
}
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: mint to the zero address');
_beforeTokenTransfer(address(0), account, amount);
uint256 oldTotalSupply = _totalSupply;
_totalSupply = oldTotalSupply.add(amount);
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.add(amount);
if (address(_getIncentivesController()) != address(0)) {
_getIncentivesController().handleAction(account, oldTotalSupply, oldAccountBalance);
}
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: burn from the zero address');
_beforeTokenTransfer(account, address(0), amount);
uint256 oldTotalSupply = _totalSupply;
_totalSupply = oldTotalSupply.sub(amount);
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.sub(amount, 'ERC20: burn amount exceeds balance');
if (address(_getIncentivesController()) != address(0)) {
_getIncentivesController().handleAction(account, oldTotalSupply, oldAccountBalance);
}
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), 'ERC20: approve from the zero address');
require(spender != address(0), 'ERC20: approve to the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _setName(string memory newName) internal {
_name = newName;
}
function _setSymbol(string memory newSymbol) internal {
_symbol = newSymbol;
}
function _setDecimals(uint8 newDecimals) internal {
_decimals = newDecimals;
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
pragma solidity 0.6.12;
interface IPermissionManager {
event RoleSet(address indexed user, uint256 indexed role, address indexed whiteLister, bool set);
event PermissionsAdminSet(address indexed user, bool set);
/**
* @dev Allows owner to add new permission admins
* @param admins The addresses to promote to permission admin
**/
function addPermissionAdmins(address[] calldata admins) external;
/**
* @dev Allows owner to remove permission admins
* @param admins The addresses to demote as permission admin
**/
function removePermissionAdmins(address[] calldata admins) external;
/**
* @dev Allows owner to whitelist a set of addresses for multiple roles
* @param roles The list of roles to assign
* @param users The list of users to add to the corresponding role
**/
function addPermissions(uint256[] calldata roles, address[] calldata users) external;
/**
* @dev Allows owner to remove permissions on a set of addresses
* @param roles The list of roles to remove
* @param users The list of users to remove from the corresponding role
**/
function removePermissions(uint256[] calldata roles, address[] calldata users) external;
/**
* @dev Returns the permissions configuration for a specific user
* @param user The address of the user
* @return the set of permissions states for the user
**/
function getUserPermissions(address user) external view returns (uint256[] memory, uint256);
/**
* @dev Used to query if a certain user has a certain role
* @param user The address of the user
* @return True if the user is in the specific role
**/
function isInRole(address user, uint256 role) external view returns (bool);
/**
* @dev Used to query if a certain user has the permissions admin role
* @param user The address of the user
* @return True if the user is a permissions admin, false otherwise
**/
function isPermissionsAdmin(address user) external view returns (bool);
/**
* @dev Used to query if a certain user satisfies certain roles
* @param user The address of the user
* @param roles The roles to check
* @return True if the user has all the roles, false otherwise
**/
function isInAllRoles(address user, uint256[] calldata roles) external view returns (bool);
/**
* @dev Used to query if a certain user is in at least one of the roles specified
* @param user The address of the user
* @return True if the user has all the roles, false otherwise
**/
function isInAnyRole(address user, uint256[] calldata roles) external view returns (bool);
/**
* @dev Used to query if a certain user is in at least one of the roles specified
* @param user The address of the user
* @return the address of the permissionAdmin of the user
**/
function getUserPermissionAdmin(address user) external view returns (address);
/**
* @dev Used to query if the permission admin of a certain user is valid
* @param user The address of the user
* @return true if the permission admin of user is valid, false otherwise
**/
function isUserPermissionAdminValid(address user) external view returns (bool);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
interface ICreditDelegationToken {
event BorrowAllowanceDelegated(
address indexed fromUser,
address indexed toUser,
address asset,
uint256 amount
);
/**
* @dev delegates borrowing power to a user on the specific debt token
* @param delegatee the address receiving the delegated borrowing power
* @param amount the maximum amount being delegated. Delegation will still
* respect the liquidation constraints (even if delegated, a delegatee cannot
* force a delegator HF to go below 1)
**/
function approveDelegation(address delegatee, uint256 amount) external;
/**
* @dev returns the borrow allowance of the user
* @param fromUser The user to giving allowance
* @param toUser The user to give allowance to
* @return the current allowance of toUser
**/
function borrowAllowance(address fromUser, address toUser) external view returns (uint256);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
interface IAaveIncentivesController {
event RewardsAccrued(address indexed user, uint256 amount);
event RewardsClaimed(address indexed user, address indexed to, uint256 amount);
event RewardsClaimed(
address indexed user,
address indexed to,
address indexed claimer,
uint256 amount
);
event ClaimerSet(address indexed user, address indexed claimer);
/*
* @dev Returns the configuration of the distribution for a certain asset
* @param asset The address of the reference asset of the distribution
* @return The asset index, the emission per second and the last updated timestamp
**/
function getAssetData(address asset)
external
view
returns (
uint256,
uint256,
uint256
);
/*
* LEGACY **************************
* @dev Returns the configuration of the distribution for a certain asset
* @param asset The address of the reference asset of the distribution
* @return The asset index, the emission per second and the last updated timestamp
**/
function assets(address asset)
external
view
returns (
uint128,
uint128,
uint256
);
/**
* @dev Whitelists an address to claim the rewards on behalf of another address
* @param user The address of the user
* @param claimer The address of the claimer
*/
function setClaimer(address user, address claimer) external;
/**
* @dev Returns the whitelisted claimer for a certain address (0x0 if not set)
* @param user The address of the user
* @return The claimer address
*/
function getClaimer(address user) external view returns (address);
/**
* @dev Configure assets for a certain rewards emission
* @param assets The assets to incentivize
* @param emissionsPerSecond The emission for each asset
*/
function configureAssets(address[] calldata assets, uint256[] calldata emissionsPerSecond)
external;
/**
* @dev Called by the corresponding asset on any update that affects the rewards distribution
* @param asset The address of the user
* @param userBalance The balance of the user of the asset in the lending pool
* @param totalSupply The total supply of the asset in the lending pool
**/
function handleAction(
address asset,
uint256 userBalance,
uint256 totalSupply
) external;
/**
* @dev Returns the total of rewards of an user, already accrued + not yet accrued
* @param user The address of the user
* @return The rewards
**/
function getRewardsBalance(address[] calldata assets, address user)
external
view
returns (uint256);
/**
* @dev Claims reward for an user, on all the assets of the lending pool, accumulating the pending rewards
* @param amount Amount of rewards to claim
* @param to Address that will be receiving the rewards
* @return Rewards claimed
**/
function claimRewards(
address[] calldata assets,
uint256 amount,
address to
) external returns (uint256);
/**
* @dev Claims reward for an user on behalf, on all the assets of the lending pool, accumulating the pending rewards. The caller must
* be whitelisted via "allowClaimOnBehalf" function by the RewardsAdmin role manager
* @param amount Amount of rewards to claim
* @param user Address to check and claim rewards
* @param to Address that will be receiving the rewards
* @return Rewards claimed
**/
function claimRewardsOnBehalf(
address[] calldata assets,
uint256 amount,
address user,
address to
) external returns (uint256);
/**
* @dev returns the unclaimed rewards of the user
* @param user the address of the user
* @return the unclaimed user rewards
*/
function getUserUnclaimedRewards(address user) external view returns (uint256);
/**
* @dev returns the unclaimed rewards of the user
* @param user the address of the user
* @param asset The asset to incentivize
* @return the user index for the asset
*/
function getUserAssetData(address user, address asset) external view returns (uint256);
/**
* @dev for backward compatibility with previous implementation of the Incentives controller
*/
function REWARD_TOKEN() external view returns (address);
/**
* @dev for backward compatibility with previous implementation of the Incentives controller
*/
function PRECISION() external view returns (uint8);
/**
* @dev Gets the distribution end timestamp of the emissions
*/
function DISTRIBUTION_END() external view returns (uint256);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IVariableDebtToken} from '../../interfaces/IVariableDebtToken.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {PermissionedDebtTokenBase} from './base/PermissionedDebtTokenBase.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
/**
* @title PermissionedVariableDebtToken
* @notice Implements a variable debt token to track the borrowing positions of users
* at variable rate mode, with permissioned roles on credit delegation
* @author Aave
**/
contract PermissionedVariableDebtToken is PermissionedDebtTokenBase, IVariableDebtToken {
using WadRayMath for uint256;
uint256 public constant DEBT_TOKEN_REVISION = 0x1;
ILendingPool internal _pool;
address internal _underlyingAsset;
IAaveIncentivesController internal _incentivesController;
/**
* @dev Initializes the debt token.
* @param pool The address of the lending pool where this aToken will be used
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param debtTokenDecimals The decimals of the debtToken, same as the underlying asset's
* @param debtTokenName The name of the token
* @param debtTokenSymbol The symbol of the token
*/
function initialize(
ILendingPool pool,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 debtTokenDecimals,
string memory debtTokenName,
string memory debtTokenSymbol,
bytes calldata params
) public override initializer {
_setName(debtTokenName);
_setSymbol(debtTokenSymbol);
_setDecimals(debtTokenDecimals);
_pool = pool;
_underlyingAsset = underlyingAsset;
_incentivesController = incentivesController;
emit Initialized(
underlyingAsset,
address(pool),
address(incentivesController),
debtTokenDecimals,
debtTokenName,
debtTokenSymbol,
params
);
}
/**
* @dev Gets the revision of the stable debt token implementation
* @return The debt token implementation revision
**/
function getRevision() internal pure virtual override returns (uint256) {
return DEBT_TOKEN_REVISION;
}
/**
* @dev Calculates the accumulated debt balance of the user
* @return The debt balance of the user
**/
function balanceOf(address user) public view virtual override returns (uint256) {
uint256 scaledBalance = super.balanceOf(user);
if (scaledBalance == 0) {
return 0;
}
return scaledBalance.rayMul(_pool.getReserveNormalizedVariableDebt(_underlyingAsset));
}
/**
* @dev Mints debt token to the `onBehalfOf` address
* - Only callable by the LendingPool
* @param user The address receiving the borrowed underlying, being the delegatee in case
* of credit delegate, or same as `onBehalfOf` otherwise
* @param onBehalfOf The address receiving the debt tokens
* @param amount The amount of debt being minted
* @param index The variable debt index of the reserve
* @return `true` if the the previous balance of the user is 0
**/
function mint(
address user,
address onBehalfOf,
uint256 amount,
uint256 index
) external override onlyLendingPool returns (bool) {
if (user != onBehalfOf) {
_decreaseBorrowAllowance(onBehalfOf, user, amount);
}
uint256 previousBalance = super.balanceOf(onBehalfOf);
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_MINT_AMOUNT);
_mint(onBehalfOf, amountScaled);
emit Transfer(address(0), onBehalfOf, amount);
emit Mint(user, onBehalfOf, amount, index);
return previousBalance == 0;
}
/**
* @dev Burns user variable debt
* - Only callable by the LendingPool
* @param user The user whose debt is getting burned
* @param amount The amount getting burned
* @param index The variable debt index of the reserve
**/
function burn(
address user,
uint256 amount,
uint256 index
) external override onlyLendingPool {
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_BURN_AMOUNT);
_burn(user, amountScaled);
emit Transfer(user, address(0), amount);
emit Burn(user, amount, index);
}
/**
* @dev Returns the principal debt balance of the user from
* @return The debt balance of the user since the last burn/mint action
**/
function scaledBalanceOf(address user) public view virtual override returns (uint256) {
return super.balanceOf(user);
}
/**
* @dev Returns the total supply of the variable debt token. Represents the total debt accrued by the users
* @return The total supply
**/
function totalSupply() public view virtual override returns (uint256) {
return super.totalSupply().rayMul(_pool.getReserveNormalizedVariableDebt(_underlyingAsset));
}
/**
* @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
* @return the scaled total supply
**/
function scaledTotalSupply() public view virtual override returns (uint256) {
return super.totalSupply();
}
/**
* @dev Returns the principal balance of the user and principal total supply.
* @param user The address of the user
* @return The principal balance of the user
* @return The principal total supply
**/
function getScaledUserBalanceAndSupply(address user)
external
view
override
returns (uint256, uint256)
{
return (super.balanceOf(user), super.totalSupply());
}
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() public view returns (address) {
return _underlyingAsset;
}
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view override returns (IAaveIncentivesController) {
return _getIncentivesController();
}
/**
* @dev Returns the address of the lending pool where this aToken is used
**/
function POOL() public view returns (ILendingPool) {
return _pool;
}
function _getIncentivesController() internal view override returns (IAaveIncentivesController) {
return _incentivesController;
}
function _getUnderlyingAssetAddress() internal view override returns (address) {
return _underlyingAsset;
}
function _getLendingPool() internal view override returns (ILendingPool) {
return _pool;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IScaledBalanceToken} from './IScaledBalanceToken.sol';
import {IInitializableDebtToken} from './IInitializableDebtToken.sol';
import {IAaveIncentivesController} from './IAaveIncentivesController.sol';
/**
* @title IVariableDebtToken
* @author Aave
* @notice Defines the basic interface for a variable debt token.
**/
interface IVariableDebtToken is IScaledBalanceToken, IInitializableDebtToken {
/**
* @dev Emitted after the mint action
* @param from The address performing the mint
* @param onBehalfOf The address of the user on which behalf minting has been performed
* @param value The amount to be minted
* @param index The last index of the reserve
**/
event Mint(address indexed from, address indexed onBehalfOf, uint256 value, uint256 index);
/**
* @dev Mints debt token to the `onBehalfOf` address
* @param user The address receiving the borrowed underlying, being the delegatee in case
* of credit delegate, or same as `onBehalfOf` otherwise
* @param onBehalfOf The address receiving the debt tokens
* @param amount The amount of debt being minted
* @param index The variable debt index of the reserve
* @return `true` if the the previous balance of the user is 0
**/
function mint(
address user,
address onBehalfOf,
uint256 amount,
uint256 index
) external returns (bool);
/**
* @dev Emitted when variable debt is burnt
* @param user The user which debt has been burned
* @param amount The amount of debt being burned
* @param index The index of the user
**/
event Burn(address indexed user, uint256 amount, uint256 index);
/**
* @dev Burns user variable debt
* @param user The user which debt is burnt
* @param index The variable debt index of the reserve
**/
function burn(
address user,
uint256 amount,
uint256 index
) external;
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view returns (IAaveIncentivesController);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Errors} from '../helpers/Errors.sol';
/**
* @title WadRayMath library
* @author Aave
* @dev Provides mul and div function for wads (decimal numbers with 18 digits precision) and rays (decimals with 27 digits)
**/
library WadRayMath {
uint256 internal constant WAD = 1e18;
uint256 internal constant halfWAD = WAD / 2;
uint256 internal constant RAY = 1e27;
uint256 internal constant halfRAY = RAY / 2;
uint256 internal constant WAD_RAY_RATIO = 1e9;
/**
* @return One ray, 1e27
**/
function ray() internal pure returns (uint256) {
return RAY;
}
/**
* @return One wad, 1e18
**/
function wad() internal pure returns (uint256) {
return WAD;
}
/**
* @return Half ray, 1e27/2
**/
function halfRay() internal pure returns (uint256) {
return halfRAY;
}
/**
* @return Half ray, 1e18/2
**/
function halfWad() internal pure returns (uint256) {
return halfWAD;
}
/**
* @dev Multiplies two wad, rounding half up to the nearest wad
* @param a Wad
* @param b Wad
* @return The result of a*b, in wad
**/
function wadMul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
require(a <= (type(uint256).max - halfWAD) / b, Errors.MATH_MULTIPLICATION_OVERFLOW);
return (a * b + halfWAD) / WAD;
}
/**
* @dev Divides two wad, rounding half up to the nearest wad
* @param a Wad
* @param b Wad
* @return The result of a/b, in wad
**/
function wadDiv(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, Errors.MATH_DIVISION_BY_ZERO);
uint256 halfB = b / 2;
require(a <= (type(uint256).max - halfB) / WAD, Errors.MATH_MULTIPLICATION_OVERFLOW);
return (a * WAD + halfB) / b;
}
/**
* @dev Multiplies two ray, rounding half up to the nearest ray
* @param a Ray
* @param b Ray
* @return The result of a*b, in ray
**/
function rayMul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
require(a <= (type(uint256).max - halfRAY) / b, Errors.MATH_MULTIPLICATION_OVERFLOW);
return (a * b + halfRAY) / RAY;
}
/**
* @dev Divides two ray, rounding half up to the nearest ray
* @param a Ray
* @param b Ray
* @return The result of a/b, in ray
**/
function rayDiv(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, Errors.MATH_DIVISION_BY_ZERO);
uint256 halfB = b / 2;
require(a <= (type(uint256).max - halfB) / RAY, Errors.MATH_MULTIPLICATION_OVERFLOW);
return (a * RAY + halfB) / b;
}
/**
* @dev Casts ray down to wad
* @param a Ray
* @return a casted to wad, rounded half up to the nearest wad
**/
function rayToWad(uint256 a) internal pure returns (uint256) {
uint256 halfRatio = WAD_RAY_RATIO / 2;
uint256 result = halfRatio + a;
require(result >= halfRatio, Errors.MATH_ADDITION_OVERFLOW);
return result / WAD_RAY_RATIO;
}
/**
* @dev Converts wad up to ray
* @param a Wad
* @return a converted in ray
**/
function wadToRay(uint256 a) internal pure returns (uint256) {
uint256 result = a * WAD_RAY_RATIO;
require(result / WAD_RAY_RATIO == a, Errors.MATH_MULTIPLICATION_OVERFLOW);
return result;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
interface IScaledBalanceToken {
/**
* @dev Returns the scaled balance of the user. The scaled balance is the sum of all the
* updated stored balance divided by the reserve's liquidity index at the moment of the update
* @param user The user whose balance is calculated
* @return The scaled balance of the user
**/
function scaledBalanceOf(address user) external view returns (uint256);
/**
* @dev Returns the scaled balance of the user and the scaled total supply.
* @param user The address of the user
* @return The scaled balance of the user
* @return The scaled balance and the scaled total supply
**/
function getScaledUserBalanceAndSupply(address user) external view returns (uint256, uint256);
/**
* @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
* @return The scaled total supply
**/
function scaledTotalSupply() external view returns (uint256);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ILendingPool} from './ILendingPool.sol';
import {IAaveIncentivesController} from './IAaveIncentivesController.sol';
/**
* @title IInitializableDebtToken
* @notice Interface for the initialize function common between debt tokens
* @author Aave
**/
interface IInitializableDebtToken {
/**
* @dev Emitted when a debt token is initialized
* @param underlyingAsset The address of the underlying asset
* @param pool The address of the associated lending pool
* @param incentivesController The address of the incentives controller for this aToken
* @param debtTokenDecimals the decimals of the debt token
* @param debtTokenName the name of the debt token
* @param debtTokenSymbol the symbol of the debt token
* @param params A set of encoded parameters for additional initialization
**/
event Initialized(
address indexed underlyingAsset,
address indexed pool,
address incentivesController,
uint8 debtTokenDecimals,
string debtTokenName,
string debtTokenSymbol,
bytes params
);
/**
* @dev Initializes the debt token.
* @param pool The address of the lending pool where this aToken will be used
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param debtTokenDecimals The decimals of the debtToken, same as the underlying asset's
* @param debtTokenName The name of the token
* @param debtTokenSymbol The symbol of the token
*/
function initialize(
ILendingPool pool,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 debtTokenDecimals,
string memory debtTokenName,
string memory debtTokenSymbol,
bytes calldata params
) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {PermissionedDebtTokenBase} from './base/PermissionedDebtTokenBase.sol';
import {MathUtils} from '../libraries/math/MathUtils.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {IStableDebtToken} from '../../interfaces/IStableDebtToken.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
/**
* @title PermissionedStableDebtToken
* @notice Implements a stable debt token to track the borrowing positions of users
* at stable rate mode, with permissioned roles on credit delegation
* @author Aave
**/
contract PermissionedStableDebtToken is IStableDebtToken, PermissionedDebtTokenBase {
using WadRayMath for uint256;
uint256 public constant DEBT_TOKEN_REVISION = 0x1;
uint256 internal _avgStableRate;
mapping(address => uint40) internal _timestamps;
mapping(address => uint256) internal _usersStableRate;
uint40 internal _totalSupplyTimestamp;
ILendingPool internal _pool;
address internal _underlyingAsset;
IAaveIncentivesController internal _incentivesController;
/**
* @dev Initializes the debt token.
* @param pool The address of the lending pool where this aToken will be used
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param debtTokenDecimals The decimals of the debtToken, same as the underlying asset's
* @param debtTokenName The name of the token
* @param debtTokenSymbol The symbol of the token
*/
function initialize(
ILendingPool pool,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 debtTokenDecimals,
string memory debtTokenName,
string memory debtTokenSymbol,
bytes calldata params
) public override initializer {
_setName(debtTokenName);
_setSymbol(debtTokenSymbol);
_setDecimals(debtTokenDecimals);
_pool = pool;
_underlyingAsset = underlyingAsset;
_incentivesController = incentivesController;
emit Initialized(
underlyingAsset,
address(pool),
address(incentivesController),
debtTokenDecimals,
debtTokenName,
debtTokenSymbol,
params
);
}
/**
* @dev Gets the revision of the stable debt token implementation
* @return The debt token implementation revision
**/
function getRevision() internal pure virtual override returns (uint256) {
return DEBT_TOKEN_REVISION;
}
/**
* @dev Returns the average stable rate across all the stable rate debt
* @return the average stable rate
**/
function getAverageStableRate() external view virtual override returns (uint256) {
return _avgStableRate;
}
/**
* @dev Returns the timestamp of the last user action
* @return The last update timestamp
**/
function getUserLastUpdated(address user) external view virtual override returns (uint40) {
return _timestamps[user];
}
/**
* @dev Returns the stable rate of the user
* @param user The address of the user
* @return The stable rate of user
**/
function getUserStableRate(address user) external view virtual override returns (uint256) {
return _usersStableRate[user];
}
/**
* @dev Calculates the current user debt balance
* @return The accumulated debt of the user
**/
function balanceOf(address account) public view virtual override returns (uint256) {
uint256 accountBalance = super.balanceOf(account);
uint256 stableRate = _usersStableRate[account];
if (accountBalance == 0) {
return 0;
}
uint256 cumulatedInterest =
MathUtils.calculateCompoundedInterest(stableRate, _timestamps[account]);
return accountBalance.rayMul(cumulatedInterest);
}
struct MintLocalVars {
uint256 previousSupply;
uint256 nextSupply;
uint256 amountInRay;
uint256 newStableRate;
uint256 currentAvgStableRate;
}
/**
* @dev Mints debt token to the `onBehalfOf` address.
* - Only callable by the LendingPool
* - The resulting rate is the weighted average between the rate of the new debt
* and the rate of the previous debt
* @param user The address receiving the borrowed underlying, being the delegatee in case
* of credit delegate, or same as `onBehalfOf` otherwise
* @param onBehalfOf The address receiving the debt tokens
* @param amount The amount of debt tokens to mint
* @param rate The rate of the debt being minted
**/
function mint(
address user,
address onBehalfOf,
uint256 amount,
uint256 rate
) external override onlyLendingPool returns (bool) {
MintLocalVars memory vars;
if (user != onBehalfOf) {
_decreaseBorrowAllowance(onBehalfOf, user, amount);
}
(, uint256 currentBalance, uint256 balanceIncrease) = _calculateBalanceIncrease(onBehalfOf);
vars.previousSupply = totalSupply();
vars.currentAvgStableRate = _avgStableRate;
vars.nextSupply = _totalSupply = vars.previousSupply.add(amount);
vars.amountInRay = amount.wadToRay();
vars.newStableRate = _usersStableRate[onBehalfOf]
.rayMul(currentBalance.wadToRay())
.add(vars.amountInRay.rayMul(rate))
.rayDiv(currentBalance.add(amount).wadToRay());
require(vars.newStableRate <= type(uint128).max, Errors.SDT_STABLE_DEBT_OVERFLOW);
_usersStableRate[onBehalfOf] = vars.newStableRate;
//solium-disable-next-line
_totalSupplyTimestamp = _timestamps[onBehalfOf] = uint40(block.timestamp);
// Calculates the updated average stable rate
vars.currentAvgStableRate = _avgStableRate = vars
.currentAvgStableRate
.rayMul(vars.previousSupply.wadToRay())
.add(rate.rayMul(vars.amountInRay))
.rayDiv(vars.nextSupply.wadToRay());
_mint(onBehalfOf, amount.add(balanceIncrease), vars.previousSupply);
emit Transfer(address(0), onBehalfOf, amount);
emit Mint(
user,
onBehalfOf,
amount,
currentBalance,
balanceIncrease,
vars.newStableRate,
vars.currentAvgStableRate,
vars.nextSupply
);
return currentBalance == 0;
}
/**
* @dev Burns debt of `user`
* @param user The address of the user getting his debt burned
* @param amount The amount of debt tokens getting burned
**/
function burn(address user, uint256 amount) external override onlyLendingPool {
(, uint256 currentBalance, uint256 balanceIncrease) = _calculateBalanceIncrease(user);
uint256 previousSupply = totalSupply();
uint256 newAvgStableRate = 0;
uint256 nextSupply = 0;
uint256 userStableRate = _usersStableRate[user];
// Since the total supply and each single user debt accrue separately,
// there might be accumulation errors so that the last borrower repaying
// mght actually try to repay more than the available debt supply.
// In this case we simply set the total supply and the avg stable rate to 0
if (previousSupply <= amount) {
_avgStableRate = 0;
_totalSupply = 0;
} else {
nextSupply = _totalSupply = previousSupply.sub(amount);
uint256 firstTerm = _avgStableRate.rayMul(previousSupply.wadToRay());
uint256 secondTerm = userStableRate.rayMul(amount.wadToRay());
// For the same reason described above, when the last user is repaying it might
// happen that user rate * user balance > avg rate * total supply. In that case,
// we simply set the avg rate to 0
if (secondTerm >= firstTerm) {
newAvgStableRate = _avgStableRate = _totalSupply = 0;
} else {
newAvgStableRate = _avgStableRate = firstTerm.sub(secondTerm).rayDiv(nextSupply.wadToRay());
}
}
if (amount == currentBalance) {
_usersStableRate[user] = 0;
_timestamps[user] = 0;
} else {
//solium-disable-next-line
_timestamps[user] = uint40(block.timestamp);
}
//solium-disable-next-line
_totalSupplyTimestamp = uint40(block.timestamp);
if (balanceIncrease > amount) {
uint256 amountToMint = balanceIncrease.sub(amount);
_mint(user, amountToMint, previousSupply);
emit Mint(
user,
user,
amountToMint,
currentBalance,
balanceIncrease,
userStableRate,
newAvgStableRate,
nextSupply
);
} else {
uint256 amountToBurn = amount.sub(balanceIncrease);
_burn(user, amountToBurn, previousSupply);
emit Burn(user, amountToBurn, currentBalance, balanceIncrease, newAvgStableRate, nextSupply);
}
emit Transfer(user, address(0), amount);
}
/**
* @dev Calculates the increase in balance since the last user interaction
* @param user The address of the user for which the interest is being accumulated
* @return The previous principal balance, the new principal balance and the balance increase
**/
function _calculateBalanceIncrease(address user)
internal
view
returns (
uint256,
uint256,
uint256
)
{
uint256 previousPrincipalBalance = super.balanceOf(user);
if (previousPrincipalBalance == 0) {
return (0, 0, 0);
}
// Calculation of the accrued interest since the last accumulation
uint256 balanceIncrease = balanceOf(user).sub(previousPrincipalBalance);
return (
previousPrincipalBalance,
previousPrincipalBalance.add(balanceIncrease),
balanceIncrease
);
}
/**
* @dev Returns the principal and total supply, the average borrow rate and the last supply update timestamp
**/
function getSupplyData()
public
view
override
returns (
uint256,
uint256,
uint256,
uint40
)
{
uint256 avgRate = _avgStableRate;
return (super.totalSupply(), _calcTotalSupply(avgRate), avgRate, _totalSupplyTimestamp);
}
/**
* @dev Returns the the total supply and the average stable rate
**/
function getTotalSupplyAndAvgRate() public view override returns (uint256, uint256) {
uint256 avgRate = _avgStableRate;
return (_calcTotalSupply(avgRate), avgRate);
}
/**
* @dev Returns the total supply
**/
function totalSupply() public view override returns (uint256) {
return _calcTotalSupply(_avgStableRate);
}
/**
* @dev Returns the timestamp at which the total supply was updated
**/
function getTotalSupplyLastUpdated() public view override returns (uint40) {
return _totalSupplyTimestamp;
}
/**
* @dev Returns the principal debt balance of the user from
* @param user The user's address
* @return The debt balance of the user since the last burn/mint action
**/
function principalBalanceOf(address user) external view virtual override returns (uint256) {
return super.balanceOf(user);
}
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() public view returns (address) {
return _underlyingAsset;
}
/**
* @dev Returns the address of the lending pool where this aToken is used
**/
function POOL() public view returns (ILendingPool) {
return _pool;
}
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view override returns (IAaveIncentivesController) {
return _getIncentivesController();
}
/**
* @dev For internal usage in the logic of the parent contracts
**/
function _getIncentivesController() internal view override returns (IAaveIncentivesController) {
return _incentivesController;
}
/**
* @dev For internal usage in the logic of the parent contracts
**/
function _getUnderlyingAssetAddress() internal view override returns (address) {
return _underlyingAsset;
}
/**
* @dev For internal usage in the logic of the parent contracts
**/
function _getLendingPool() internal view override returns (ILendingPool) {
return _pool;
}
/**
* @dev Calculates the total supply
* @param avgRate The average rate at which the total supply increases
* @return The debt balance of the user since the last burn/mint action
**/
function _calcTotalSupply(uint256 avgRate) internal view virtual returns (uint256) {
uint256 principalSupply = super.totalSupply();
if (principalSupply == 0) {
return 0;
}
uint256 cumulatedInterest =
MathUtils.calculateCompoundedInterest(avgRate, _totalSupplyTimestamp);
return principalSupply.rayMul(cumulatedInterest);
}
/**
* @dev Mints stable debt tokens to an user
* @param account The account receiving the debt tokens
* @param amount The amount being minted
* @param oldTotalSupply the total supply before the minting event
**/
function _mint(
address account,
uint256 amount,
uint256 oldTotalSupply
) internal {
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.add(amount);
if (address(_incentivesController) != address(0)) {
_incentivesController.handleAction(account, oldTotalSupply, oldAccountBalance);
}
}
/**
* @dev Burns stable debt tokens of an user
* @param account The user getting his debt burned
* @param amount The amount being burned
* @param oldTotalSupply The total supply before the burning event
**/
function _burn(
address account,
uint256 amount,
uint256 oldTotalSupply
) internal {
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.sub(amount, Errors.SDT_BURN_EXCEEDS_BALANCE);
if (address(_incentivesController) != address(0)) {
_incentivesController.handleAction(account, oldTotalSupply, oldAccountBalance);
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {SafeMath} from '../../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {WadRayMath} from './WadRayMath.sol';
library MathUtils {
using SafeMath for uint256;
using WadRayMath for uint256;
/// @dev Ignoring leap years
uint256 internal constant SECONDS_PER_YEAR = 365 days;
/**
* @dev Function to calculate the interest accumulated using a linear interest rate formula
* @param rate The interest rate, in ray
* @param lastUpdateTimestamp The timestamp of the last update of the interest
* @return The interest rate linearly accumulated during the timeDelta, in ray
**/
function calculateLinearInterest(uint256 rate, uint40 lastUpdateTimestamp)
internal
view
returns (uint256)
{
//solium-disable-next-line
uint256 timeDifference = block.timestamp.sub(uint256(lastUpdateTimestamp));
return (rate.mul(timeDifference) / SECONDS_PER_YEAR).add(WadRayMath.ray());
}
/**
* @dev Function to calculate the interest using a compounded interest rate formula
* To avoid expensive exponentiation, the calculation is performed using a binomial approximation:
*
* (1+x)^n = 1+n*x+[n/2*(n-1)]*x^2+[n/6*(n-1)*(n-2)*x^3...
*
* The approximation slightly underpays liquidity providers and undercharges borrowers, with the advantage of great gas cost reductions
* The whitepaper contains reference to the approximation and a table showing the margin of error per different time periods
*
* @param rate The interest rate, in ray
* @param lastUpdateTimestamp The timestamp of the last update of the interest
* @return The interest rate compounded during the timeDelta, in ray
**/
function calculateCompoundedInterest(
uint256 rate,
uint40 lastUpdateTimestamp,
uint256 currentTimestamp
) internal pure returns (uint256) {
//solium-disable-next-line
uint256 exp = currentTimestamp.sub(uint256(lastUpdateTimestamp));
if (exp == 0) {
return WadRayMath.ray();
}
uint256 expMinusOne = exp - 1;
uint256 expMinusTwo = exp > 2 ? exp - 2 : 0;
uint256 ratePerSecond = rate / SECONDS_PER_YEAR;
uint256 basePowerTwo = ratePerSecond.rayMul(ratePerSecond);
uint256 basePowerThree = basePowerTwo.rayMul(ratePerSecond);
uint256 secondTerm = exp.mul(expMinusOne).mul(basePowerTwo) / 2;
uint256 thirdTerm = exp.mul(expMinusOne).mul(expMinusTwo).mul(basePowerThree) / 6;
return WadRayMath.ray().add(ratePerSecond.mul(exp)).add(secondTerm).add(thirdTerm);
}
/**
* @dev Calculates the compounded interest between the timestamp of the last update and the current block timestamp
* @param rate The interest rate (in ray)
* @param lastUpdateTimestamp The timestamp from which the interest accumulation needs to be calculated
**/
function calculateCompoundedInterest(uint256 rate, uint40 lastUpdateTimestamp)
internal
view
returns (uint256)
{
return calculateCompoundedInterest(rate, lastUpdateTimestamp, block.timestamp);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IInitializableDebtToken} from './IInitializableDebtToken.sol';
import {IAaveIncentivesController} from './IAaveIncentivesController.sol';
/**
* @title IStableDebtToken
* @notice Defines the interface for the stable debt token
* @dev It does not inherit from IERC20 to save in code size
* @author Aave
**/
interface IStableDebtToken is IInitializableDebtToken {
/**
* @dev Emitted when new stable debt is minted
* @param user The address of the user who triggered the minting
* @param onBehalfOf The recipient of stable debt tokens
* @param amount The amount minted
* @param currentBalance The current balance of the user
* @param balanceIncrease The increase in balance since the last action of the user
* @param newRate The rate of the debt after the minting
* @param avgStableRate The new average stable rate after the minting
* @param newTotalSupply The new total supply of the stable debt token after the action
**/
event Mint(
address indexed user,
address indexed onBehalfOf,
uint256 amount,
uint256 currentBalance,
uint256 balanceIncrease,
uint256 newRate,
uint256 avgStableRate,
uint256 newTotalSupply
);
/**
* @dev Emitted when new stable debt is burned
* @param user The address of the user
* @param amount The amount being burned
* @param currentBalance The current balance of the user
* @param balanceIncrease The the increase in balance since the last action of the user
* @param avgStableRate The new average stable rate after the burning
* @param newTotalSupply The new total supply of the stable debt token after the action
**/
event Burn(
address indexed user,
uint256 amount,
uint256 currentBalance,
uint256 balanceIncrease,
uint256 avgStableRate,
uint256 newTotalSupply
);
/**
* @dev Mints debt token to the `onBehalfOf` address.
* - The resulting rate is the weighted average between the rate of the new debt
* and the rate of the previous debt
* @param user The address receiving the borrowed underlying, being the delegatee in case
* of credit delegate, or same as `onBehalfOf` otherwise
* @param onBehalfOf The address receiving the debt tokens
* @param amount The amount of debt tokens to mint
* @param rate The rate of the debt being minted
**/
function mint(
address user,
address onBehalfOf,
uint256 amount,
uint256 rate
) external returns (bool);
/**
* @dev Burns debt of `user`
* - The resulting rate is the weighted average between the rate of the new debt
* and the rate of the previous debt
* @param user The address of the user getting his debt burned
* @param amount The amount of debt tokens getting burned
**/
function burn(address user, uint256 amount) external;
/**
* @dev Returns the average rate of all the stable rate loans.
* @return The average stable rate
**/
function getAverageStableRate() external view returns (uint256);
/**
* @dev Returns the stable rate of the user debt
* @return The stable rate of the user
**/
function getUserStableRate(address user) external view returns (uint256);
/**
* @dev Returns the timestamp of the last update of the user
* @return The timestamp
**/
function getUserLastUpdated(address user) external view returns (uint40);
/**
* @dev Returns the principal, the total supply and the average stable rate
**/
function getSupplyData()
external
view
returns (
uint256,
uint256,
uint256,
uint40
);
/**
* @dev Returns the timestamp of the last update of the total supply
* @return The timestamp
**/
function getTotalSupplyLastUpdated() external view returns (uint40);
/**
* @dev Returns the total supply and the average stable rate
**/
function getTotalSupplyAndAvgRate() external view returns (uint256, uint256);
/**
* @dev Returns the principal debt balance of the user
* @return The debt balance of the user since the last burn/mint action
**/
function principalBalanceOf(address user) external view returns (uint256);
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view returns (IAaveIncentivesController);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IDelegationToken} from '../../interfaces/IDelegationToken.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {AToken} from './AToken.sol';
/**
* @title Aave AToken enabled to delegate voting power of the underlying asset to a different address
* @dev The underlying asset needs to be compatible with the COMP delegation interface
* @author Aave
*/
contract DelegationAwareAToken is AToken {
modifier onlyPoolAdmin {
require(
_msgSender() == ILendingPool(_pool).getAddressesProvider().getPoolAdmin(),
Errors.CALLER_NOT_POOL_ADMIN
);
_;
}
/**
* @dev Delegates voting power of the underlying asset to a `delegatee` address
* @param delegatee The address that will receive the delegation
**/
function delegateUnderlyingTo(address delegatee) external onlyPoolAdmin {
IDelegationToken(_underlyingAsset).delegate(delegatee);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title IDelegationToken
* @dev Implements an interface for tokens with delegation COMP/UNI compatible
* @author Aave
**/
interface IDelegationToken {
function delegate(address delegatee) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
import {SafeERC20} from '../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IAToken} from '../../interfaces/IAToken.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {VersionedInitializable} from '../libraries/aave-upgradeability/VersionedInitializable.sol';
import {IncentivizedERC20} from './IncentivizedERC20.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
/**
* @title Aave ERC20 AToken
* @dev Implementation of the interest bearing token for the Aave protocol
* @author Aave
*/
contract AToken is
VersionedInitializable,
IncentivizedERC20('ATOKEN_IMPL', 'ATOKEN_IMPL', 0),
IAToken
{
using WadRayMath for uint256;
using SafeERC20 for IERC20;
bytes public constant EIP712_REVISION = bytes('1');
bytes32 internal constant EIP712_DOMAIN =
keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)');
bytes32 public constant PERMIT_TYPEHASH =
keccak256('Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)');
uint256 public constant ATOKEN_REVISION = 0x1;
/// @dev owner => next valid nonce to submit with permit()
mapping(address => uint256) public _nonces;
bytes32 public DOMAIN_SEPARATOR;
ILendingPool internal _pool;
address internal _treasury;
address internal _underlyingAsset;
IAaveIncentivesController internal _incentivesController;
modifier onlyLendingPool {
require(_msgSender() == address(_pool), Errors.CT_CALLER_MUST_BE_LENDING_POOL);
_;
}
function getRevision() internal pure virtual override returns (uint256) {
return ATOKEN_REVISION;
}
/**
* @dev Initializes the aToken
* @param pool The address of the lending pool where this aToken will be used
* @param treasury The address of the Aave treasury, receiving the fees on this aToken
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param aTokenDecimals The decimals of the aToken, same as the underlying asset's
* @param aTokenName The name of the aToken
* @param aTokenSymbol The symbol of the aToken
*/
function initialize(
ILendingPool pool,
address treasury,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 aTokenDecimals,
string calldata aTokenName,
string calldata aTokenSymbol,
bytes calldata params
) external override initializer {
uint256 chainId;
//solium-disable-next-line
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
EIP712_DOMAIN,
keccak256(bytes(aTokenName)),
keccak256(EIP712_REVISION),
chainId,
address(this)
)
);
_setName(aTokenName);
_setSymbol(aTokenSymbol);
_setDecimals(aTokenDecimals);
_pool = pool;
_treasury = treasury;
_underlyingAsset = underlyingAsset;
_incentivesController = incentivesController;
emit Initialized(
underlyingAsset,
address(pool),
treasury,
address(incentivesController),
aTokenDecimals,
aTokenName,
aTokenSymbol,
params
);
}
/**
* @dev Burns aTokens from `user` and sends the equivalent amount of underlying to `receiverOfUnderlying`
* - Only callable by the LendingPool, as extra state updates there need to be managed
* @param user The owner of the aTokens, getting them burned
* @param receiverOfUnderlying The address that will receive the underlying
* @param amount The amount being burned
* @param index The new liquidity index of the reserve
**/
function burn(
address user,
address receiverOfUnderlying,
uint256 amount,
uint256 index
) external override onlyLendingPool {
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_BURN_AMOUNT);
_burn(user, amountScaled);
IERC20(_underlyingAsset).safeTransfer(receiverOfUnderlying, amount);
emit Transfer(user, address(0), amount);
emit Burn(user, receiverOfUnderlying, amount, index);
}
/**
* @dev Mints `amount` aTokens to `user`
* - Only callable by the LendingPool, as extra state updates there need to be managed
* @param user The address receiving the minted tokens
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
* @return `true` if the the previous balance of the user was 0
*/
function mint(
address user,
uint256 amount,
uint256 index
) external override onlyLendingPool returns (bool) {
uint256 previousBalance = super.balanceOf(user);
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_MINT_AMOUNT);
_mint(user, amountScaled);
emit Transfer(address(0), user, amount);
emit Mint(user, amount, index);
return previousBalance == 0;
}
/**
* @dev Mints aTokens to the reserve treasury
* - Only callable by the LendingPool
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
*/
function mintToTreasury(uint256 amount, uint256 index) external override onlyLendingPool {
if (amount == 0) {
return;
}
address treasury = _treasury;
// Compared to the normal mint, we don't check for rounding errors.
// The amount to mint can easily be very small since it is a fraction of the interest ccrued.
// In that case, the treasury will experience a (very small) loss, but it
// wont cause potentially valid transactions to fail.
_mint(treasury, amount.rayDiv(index));
emit Transfer(address(0), treasury, amount);
emit Mint(treasury, amount, index);
}
/**
* @dev Transfers aTokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken
* - Only callable by the LendingPool
* @param from The address getting liquidated, current owner of the aTokens
* @param to The recipient
* @param value The amount of tokens getting transferred
**/
function transferOnLiquidation(
address from,
address to,
uint256 value
) external override onlyLendingPool {
// Being a normal transfer, the Transfer() and BalanceTransfer() are emitted
// so no need to emit a specific event here
_transfer(from, to, value, false);
emit Transfer(from, to, value);
}
/**
* @dev Calculates the balance of the user: principal balance + interest generated by the principal
* @param user The user whose balance is calculated
* @return The balance of the user
**/
function balanceOf(address user)
public
view
override(IncentivizedERC20, IERC20)
returns (uint256)
{
return super.balanceOf(user).rayMul(_pool.getReserveNormalizedIncome(_underlyingAsset));
}
/**
* @dev Returns the scaled balance of the user. The scaled balance is the sum of all the
* updated stored balance divided by the reserve's liquidity index at the moment of the update
* @param user The user whose balance is calculated
* @return The scaled balance of the user
**/
function scaledBalanceOf(address user) external view override returns (uint256) {
return super.balanceOf(user);
}
/**
* @dev Returns the scaled balance of the user and the scaled total supply.
* @param user The address of the user
* @return The scaled balance of the user
* @return The scaled balance and the scaled total supply
**/
function getScaledUserBalanceAndSupply(address user)
external
view
override
returns (uint256, uint256)
{
return (super.balanceOf(user), super.totalSupply());
}
/**
* @dev calculates the total supply of the specific aToken
* since the balance of every single user increases over time, the total supply
* does that too.
* @return the current total supply
**/
function totalSupply() public view override(IncentivizedERC20, IERC20) returns (uint256) {
uint256 currentSupplyScaled = super.totalSupply();
if (currentSupplyScaled == 0) {
return 0;
}
return currentSupplyScaled.rayMul(_pool.getReserveNormalizedIncome(_underlyingAsset));
}
/**
* @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
* @return the scaled total supply
**/
function scaledTotalSupply() public view virtual override returns (uint256) {
return super.totalSupply();
}
/**
* @dev Returns the address of the Aave treasury, receiving the fees on this aToken
**/
function RESERVE_TREASURY_ADDRESS() public view returns (address) {
return _treasury;
}
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() public override view returns (address) {
return _underlyingAsset;
}
/**
* @dev Returns the address of the lending pool where this aToken is used
**/
function POOL() public view returns (ILendingPool) {
return _pool;
}
/**
* @dev For internal usage in the logic of the parent contract IncentivizedERC20
**/
function _getIncentivesController() internal view override returns (IAaveIncentivesController) {
return _incentivesController;
}
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view override returns (IAaveIncentivesController) {
return _getIncentivesController();
}
/**
* @dev Transfers the underlying asset to `target`. Used by the LendingPool to transfer
* assets in borrow(), withdraw() and flashLoan()
* @param target The recipient of the aTokens
* @param amount The amount getting transferred
* @return The amount transferred
**/
function transferUnderlyingTo(address target, uint256 amount)
external
override
onlyLendingPool
returns (uint256)
{
IERC20(_underlyingAsset).safeTransfer(target, amount);
return amount;
}
/**
* @dev Invoked to execute actions on the aToken side after a repayment.
* @param user The user executing the repayment
* @param amount The amount getting repaid
**/
function handleRepayment(address user, uint256 amount) external override onlyLendingPool {}
/**
* @dev implements the permit function as for
* https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md
* @param owner The owner of the funds
* @param spender The spender
* @param value The amount
* @param deadline The deadline timestamp, type(uint256).max for max deadline
* @param v Signature param
* @param s Signature param
* @param r Signature param
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external override {
require(owner != address(0), 'INVALID_OWNER');
//solium-disable-next-line
require(block.timestamp <= deadline, 'INVALID_EXPIRATION');
uint256 currentValidNonce = _nonces[owner];
bytes32 digest =
keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, currentValidNonce, deadline))
)
);
require(owner == ecrecover(digest, v, r, s), 'INVALID_SIGNATURE');
_nonces[owner] = currentValidNonce.add(1);
_approve(owner, spender, value);
}
/**
* @dev Transfers the aTokens between two users. Validates the transfer
* (ie checks for valid HF after the transfer) if required
* @param from The source address
* @param to The destination address
* @param amount The amount getting transferred
* @param validate `true` if the transfer needs to be validated
**/
function _transfer(
address from,
address to,
uint256 amount,
bool validate
) internal {
address underlyingAsset = _underlyingAsset;
ILendingPool pool = _pool;
uint256 index = pool.getReserveNormalizedIncome(underlyingAsset);
uint256 fromBalanceBefore = super.balanceOf(from).rayMul(index);
uint256 toBalanceBefore = super.balanceOf(to).rayMul(index);
super._transfer(from, to, amount.rayDiv(index));
if (validate) {
pool.finalizeTransfer(underlyingAsset, from, to, amount, fromBalanceBefore, toBalanceBefore);
}
emit BalanceTransfer(from, to, amount, index);
}
/**
* @dev Overrides the parent _transfer to force validated transfer() and transferFrom()
* @param from The source address
* @param to The destination address
* @param amount The amount getting transferred
**/
function _transfer(
address from,
address to,
uint256 amount
) internal override {
_transfer(from, to, amount, true);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {IScaledBalanceToken} from './IScaledBalanceToken.sol';
import {IInitializableAToken} from './IInitializableAToken.sol';
import {IAaveIncentivesController} from './IAaveIncentivesController.sol';
interface IAToken is IERC20, IScaledBalanceToken, IInitializableAToken {
/**
* @dev Emitted after the mint action
* @param from The address performing the mint
* @param value The amount being
* @param index The new liquidity index of the reserve
**/
event Mint(address indexed from, uint256 value, uint256 index);
/**
* @dev Mints `amount` aTokens to `user`
* @param user The address receiving the minted tokens
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
* @return `true` if the the previous balance of the user was 0
*/
function mint(
address user,
uint256 amount,
uint256 index
) external returns (bool);
/**
* @dev Emitted after aTokens are burned
* @param from The owner of the aTokens, getting them burned
* @param target The address that will receive the underlying
* @param value The amount being burned
* @param index The new liquidity index of the reserve
**/
event Burn(address indexed from, address indexed target, uint256 value, uint256 index);
/**
* @dev Emitted during the transfer action
* @param from The user whose tokens are being transferred
* @param to The recipient
* @param value The amount being transferred
* @param index The new liquidity index of the reserve
**/
event BalanceTransfer(address indexed from, address indexed to, uint256 value, uint256 index);
/**
* @dev Burns aTokens from `user` and sends the equivalent amount of underlying to `receiverOfUnderlying`
* @param user The owner of the aTokens, getting them burned
* @param receiverOfUnderlying The address that will receive the underlying
* @param amount The amount being burned
* @param index The new liquidity index of the reserve
**/
function burn(
address user,
address receiverOfUnderlying,
uint256 amount,
uint256 index
) external;
/**
* @dev Mints aTokens to the reserve treasury
* @param amount The amount of tokens getting minted
* @param index The new liquidity index of the reserve
*/
function mintToTreasury(uint256 amount, uint256 index) external;
/**
* @dev Transfers aTokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken
* @param from The address getting liquidated, current owner of the aTokens
* @param to The recipient
* @param value The amount of tokens getting transferred
**/
function transferOnLiquidation(
address from,
address to,
uint256 value
) external;
/**
* @dev Transfers the underlying asset to `target`. Used by the LendingPool to transfer
* assets in borrow(), withdraw() and flashLoan()
* @param user The recipient of the underlying
* @param amount The amount getting transferred
* @return The amount transferred
**/
function transferUnderlyingTo(address user, uint256 amount) external returns (uint256);
/**
* @dev Invoked to execute actions on the aToken side after a repayment.
* @param user The user executing the repayment
* @param amount The amount getting repaid
**/
function handleRepayment(address user, uint256 amount) external;
/**
* @dev implements the permit function as for
* https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md
* @param owner The owner of the funds
* @param spender The spender
* @param value The amount
* @param deadline The deadline timestamp, type(uint256).max for max deadline
* @param v Signature param
* @param s Signature param
* @param r Signature param
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view returns (IAaveIncentivesController);
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() external view returns (address);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ILendingPool} from './ILendingPool.sol';
import {IAaveIncentivesController} from './IAaveIncentivesController.sol';
/**
* @title IInitializableAToken
* @notice Interface for the initialize function on AToken
* @author Aave
**/
interface IInitializableAToken {
/**
* @dev Emitted when an aToken is initialized
* @param underlyingAsset The address of the underlying asset
* @param pool The address of the associated lending pool
* @param treasury The address of the treasury
* @param incentivesController The address of the incentives controller for this aToken
* @param aTokenDecimals the decimals of the underlying
* @param aTokenName the name of the aToken
* @param aTokenSymbol the symbol of the aToken
* @param params A set of encoded parameters for additional initialization
**/
event Initialized(
address indexed underlyingAsset,
address indexed pool,
address treasury,
address incentivesController,
uint8 aTokenDecimals,
string aTokenName,
string aTokenSymbol,
bytes params
);
/**
* @dev Initializes the aToken
* @param pool The address of the lending pool where this aToken will be used
* @param treasury The address of the Aave treasury, receiving the fees on this aToken
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param aTokenDecimals The decimals of the aToken, same as the underlying asset's
* @param aTokenName The name of the aToken
* @param aTokenSymbol The symbol of the aToken
*/
function initialize(
ILendingPool pool,
address treasury,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 aTokenDecimals,
string calldata aTokenName,
string calldata aTokenSymbol,
bytes calldata params
) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {AToken} from '../../protocol/tokenization/AToken.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
contract MockAToken is AToken {
function getRevision() internal pure override returns (uint256) {
return 0x2;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.12;
pragma experimental ABIEncoderV2;
import {LendingPool} from './LendingPool.sol';
import {IPermissionManager} from '../../interfaces/IPermissionManager.sol';
import {IPermissionedLendingPool} from '../../interfaces/IPermissionedLendingPool.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {DataTypes} from '../libraries/types/DataTypes.sol';
/**
* @title PermissionedLendingPool
* @notice This smart contracts adds a permission layer to the LendingPool contract to enable whitelisting of users interacting with it
* @author Aave
**/
contract PermissionedLendingPool is IPermissionedLendingPool, LendingPool {
//identifier for the permission manager contract in the addresses provider
bytes32 public constant PERMISSION_MANAGER = keccak256('PERMISSION_MANAGER');
modifier onlyDepositors(address user) {
_onlyDepositors(user);
_;
}
modifier onlyUserPermissionAdmin(address user) {
require(_isPermissionAdminOf(user, msg.sender), Errors.PLP_INVALID_PERMISSION_ADMIN);
_;
}
modifier onlyValidPermissionAdmin(address user) {
_onlyValidPermissionAdmin(user);
_;
}
modifier onlyBorrowers(address user) {
_onlyBorrowers(user);
_;
}
modifier onlyLiquidators {
require(_isInRole(msg.sender, DataTypes.Roles.LIQUIDATOR), Errors.PLP_LIQUIDATOR_UNAUTHORIZED);
_;
}
modifier onlyStableRateManagers {
require(
_isInRole(msg.sender, DataTypes.Roles.STABLE_RATE_MANAGER),
Errors.PLP_CALLER_NOT_STABLE_RATE_MANAGER
);
_;
}
/**
* @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. User deposits 100 USDC and gets in return 100 aUSDC
* @param asset The address of the underlying asset to deposit
* @param amount The amount to be deposited
* @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
* wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
* is a different wallet
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function deposit(
address asset,
uint256 amount,
address onBehalfOf,
uint16 referralCode
)
public
virtual
override(ILendingPool, LendingPool)
onlyDepositors(onBehalfOf)
onlyValidPermissionAdmin(onBehalfOf)
{
super.deposit(asset, amount, onBehalfOf, referralCode);
}
/**
* @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
* E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
* @param asset The address of the underlying asset to withdraw
* @param amount The underlying amount to be withdrawn
* - Send the value type(uint256).max in order to withdraw the whole aToken balance
* @param to Address that will receive the underlying, same as msg.sender if the user
* wants to receive it on his own wallet, or a different address if the beneficiary is a
* different wallet
* @return The final amount withdrawn
**/
function withdraw(
address asset,
uint256 amount,
address to
)
public
virtual
override(ILendingPool, LendingPool)
onlyDepositors(msg.sender)
returns (uint256)
{
return super.withdraw(asset, amount, to);
}
/**
* @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
* already deposited enough collateral, or he was given enough allowance by a credit delegator on the
* corresponding debt token (StableDebtToken or VariableDebtToken)
* - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
* and 100 stable/variable debt tokens, depending on the `interestRateMode`
* @param asset The address of the underlying asset to borrow
* @param amount The amount to be borrowed
* @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
* @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
* calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
* if he has been given credit delegation allowance
**/
function borrow(
address asset,
uint256 amount,
uint256 interestRateMode,
uint16 referralCode,
address onBehalfOf
)
public
virtual
override(ILendingPool, LendingPool)
onlyBorrowers(onBehalfOf)
onlyValidPermissionAdmin(onBehalfOf)
{
super.borrow(asset, amount, interestRateMode, referralCode, onBehalfOf);
}
/**
* @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
* - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
* @param asset The address of the borrowed underlying asset previously borrowed
* @param amount The amount to repay
* - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
* @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
* @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
* @return The final amount repaid
**/
function repay(
address asset,
uint256 amount,
uint256 rateMode,
address onBehalfOf
)
public
virtual
override(ILendingPool, LendingPool)
onlyBorrowers(onBehalfOf)
onlyValidPermissionAdmin(onBehalfOf)
returns (uint256)
{
return super.repay(asset, amount, rateMode, onBehalfOf);
}
/**
* @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
* @param asset The address of the underlying asset borrowed
* @param rateMode The rate mode that the user wants to swap to
**/
function swapBorrowRateMode(address asset, uint256 rateMode)
public
virtual
override(ILendingPool, LendingPool)
onlyBorrowers(msg.sender)
onlyValidPermissionAdmin(msg.sender)
{
super.swapBorrowRateMode(asset, rateMode);
}
/**
* @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
* - Users can be rebalanced if the following conditions are satisfied:
* 1. Usage ratio is above 95%
* 2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
* borrowed at a stable rate and depositors are not earning enough
* @param asset The address of the underlying asset borrowed
* @param user The address of the user to be rebalanced
**/
function rebalanceStableBorrowRate(address asset, address user)
public
virtual
override(ILendingPool, LendingPool)
onlyStableRateManagers
{
super.rebalanceStableBorrowRate(asset, user);
}
/**
* @dev Allows depositors to enable/disable a specific deposited asset as collateral
* @param asset The address of the underlying asset deposited
* @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
**/
function setUserUseReserveAsCollateral(address asset, bool useAsCollateral)
public
virtual
override(ILendingPool, LendingPool)
onlyDepositors(msg.sender)
onlyValidPermissionAdmin(msg.sender)
{
super.setUserUseReserveAsCollateral(asset, useAsCollateral);
}
/**
* @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
* - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
function liquidationCall(
address collateralAsset,
address debtAsset,
address user,
uint256 debtToCover,
bool receiveAToken
)
public
virtual
override(ILendingPool, LendingPool)
onlyLiquidators
onlyValidPermissionAdmin(msg.sender)
{
super.liquidationCall(collateralAsset, debtAsset, user, debtToCover, receiveAToken);
}
/**
* @dev Function to seize the collateral of a user. Only whitelisters of the user can call this function
* @param assets The addresses of the underlying assets to seize
* @param to The address that will receive the funds
**/
function seize(
address user,
address[] calldata assets,
address to
) public virtual override(IPermissionedLendingPool) onlyUserPermissionAdmin(user) whenNotPaused {
address collateralManager = _addressesProvider.getLendingPoolCollateralManager();
//solium-disable-next-line
(bool success, bytes memory result) =
collateralManager.delegatecall(
abi.encodeWithSignature('seize(address,address[],address)', user, assets, to)
);
require(success, Errors.LP_LIQUIDATION_CALL_FAILED);
(uint256 returnCode, string memory returnMessage) = abi.decode(result, (uint256, string));
require(returnCode == 0, string(abi.encodePacked(returnMessage)));
}
/**
* @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned.
* IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
* For further details please visit https://developers.aave.com
* @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
* @param assets The addresses of the assets being flash-borrowed
* @param amounts The amounts amounts being flash-borrowed
* @param modes Types of the debt to open if the flash loan is not returned:
* 0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
* 1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* 2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* @param onBehalfOf The address that will receive the debt in the case of using on `modes` 1 or 2
* @param params Variadic packed params to pass to the receiver as extra information
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function flashLoan(
address receiverAddress,
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata modes,
address onBehalfOf,
bytes calldata params,
uint16 referralCode
) public virtual override(ILendingPool, LendingPool) {
//validating modes
for (uint256 i = 0; i < modes.length; i++) {
if (modes[i] == uint256(DataTypes.InterestRateMode.NONE)) {
require(_isInRole(msg.sender, DataTypes.Roles.BORROWER), Errors.PLP_BORROWER_UNAUTHORIZED);
require(_permissionAdminValid(msg.sender), Errors.PLP_INVALID_PERMISSION_ADMIN);
} else {
require(_isInRole(onBehalfOf, DataTypes.Roles.BORROWER), Errors.PLP_BORROWER_UNAUTHORIZED);
require(_permissionAdminValid(onBehalfOf), Errors.PLP_INVALID_PERMISSION_ADMIN);
}
}
super.flashLoan(receiverAddress, assets, amounts, modes, onBehalfOf, params, referralCode);
}
/**
* @dev Validates and finalizes an aToken transfer
* - Only callable by the overlying aToken of the `asset`
* @param asset The address of the underlying asset of the aToken
* @param from The user from which the aTokens are transferred
* @param to The user receiving the aTokens
* @param amount The amount being transferred/withdrawn
* @param balanceFromBefore The aToken balance of the `from` user before the transfer
* @param balanceToBefore The aToken balance of the `to` user before the transfer
*/
function finalizeTransfer(
address asset,
address from,
address to,
uint256 amount,
uint256 balanceFromBefore,
uint256 balanceToBefore
) public override(ILendingPool, LendingPool) {
require(_isInRole(from, DataTypes.Roles.DEPOSITOR), Errors.VL_TRANSFER_NOT_ALLOWED);
require(_isInRole(to, DataTypes.Roles.DEPOSITOR), Errors.VL_TRANSFER_NOT_ALLOWED);
super.finalizeTransfer(asset, from, to, amount, balanceFromBefore, balanceToBefore);
}
function _isPermissionAdminOf(address user, address caller) internal view returns (bool) {
IPermissionManager permissionManager =
IPermissionManager(_addressesProvider.getAddress(PERMISSION_MANAGER));
return
permissionManager.getUserPermissionAdmin(user) == caller &&
permissionManager.isUserPermissionAdminValid(user);
}
function _isInRole(address user, DataTypes.Roles role) internal view returns (bool) {
return
IPermissionManager(_addressesProvider.getAddress(PERMISSION_MANAGER)).isInRole(
user,
uint256(role)
);
}
function _permissionAdminValid(address user) internal view returns (bool) {
return
IPermissionManager(_addressesProvider.getAddress(PERMISSION_MANAGER))
.isUserPermissionAdminValid(user);
}
function _onlyDepositors(address user) internal view {
require(
_isInRole(user, DataTypes.Roles.DEPOSITOR) &&
((user == msg.sender) || _isInRole(msg.sender, DataTypes.Roles.DEPOSITOR)),
Errors.PLP_DEPOSITOR_UNAUTHORIZED
);
}
function _onlyBorrowers(address user) internal view {
require(
_isInRole(user, DataTypes.Roles.BORROWER) &&
((user == msg.sender) || _isInRole(msg.sender, DataTypes.Roles.BORROWER)),
Errors.PLP_BORROWER_UNAUTHORIZED
);
}
function _onlyValidPermissionAdmin(address user) internal view {
require(_permissionAdminValid(user), Errors.PLP_INVALID_PERMISSION_ADMIN);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {SafeMath} from '../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
import {SafeERC20} from '../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {Address} from '../../dependencies/openzeppelin/contracts/Address.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {IAToken} from '../../interfaces/IAToken.sol';
import {IVariableDebtToken} from '../../interfaces/IVariableDebtToken.sol';
import {IFlashLoanReceiver} from '../../flashloan/interfaces/IFlashLoanReceiver.sol';
import {IPriceOracleGetter} from '../../interfaces/IPriceOracleGetter.sol';
import {IStableDebtToken} from '../../interfaces/IStableDebtToken.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {VersionedInitializable} from '../libraries/aave-upgradeability/VersionedInitializable.sol';
import {Helpers} from '../libraries/helpers/Helpers.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {PercentageMath} from '../libraries/math/PercentageMath.sol';
import {ReserveLogic} from '../libraries/logic/ReserveLogic.sol';
import {GenericLogic} from '../libraries/logic/GenericLogic.sol';
import {ValidationLogic} from '../libraries/logic/ValidationLogic.sol';
import {ReserveConfiguration} from '../libraries/configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../libraries/configuration/UserConfiguration.sol';
import {DataTypes} from '../libraries/types/DataTypes.sol';
import {LendingPoolStorage} from './LendingPoolStorage.sol';
/**
* @title LendingPool contract
* @dev Main point of interaction with an Aave protocol's market
* - Users can:
* # Deposit
* # Withdraw
* # Borrow
* # Repay
* # Swap their loans between variable and stable rate
* # Enable/disable their deposits as collateral rebalance stable rate borrow positions
* # Liquidate positions
* # Execute Flash Loans
* - To be covered by a proxy contract, owned by the LendingPoolAddressesProvider of the specific market
* - All admin functions are callable by the LendingPoolConfigurator contract defined also in the
* LendingPoolAddressesProvider
* @author Aave
**/
contract LendingPool is VersionedInitializable, ILendingPool, LendingPoolStorage {
using SafeMath for uint256;
using WadRayMath for uint256;
using PercentageMath for uint256;
using SafeERC20 for IERC20;
uint256 public constant LENDINGPOOL_REVISION = 0x2;
modifier whenNotPaused() {
_whenNotPaused();
_;
}
modifier onlyLendingPoolConfigurator() {
_onlyLendingPoolConfigurator();
_;
}
function _whenNotPaused() internal view {
require(!_paused, Errors.LP_IS_PAUSED);
}
function _onlyLendingPoolConfigurator() internal view {
require(
_addressesProvider.getLendingPoolConfigurator() == msg.sender,
Errors.LP_CALLER_NOT_LENDING_POOL_CONFIGURATOR
);
}
function getRevision() internal pure override returns (uint256) {
return LENDINGPOOL_REVISION;
}
/**
* @dev Function is invoked by the proxy contract when the LendingPool contract is added to the
* LendingPoolAddressesProvider of the market.
* - Caching the address of the LendingPoolAddressesProvider in order to reduce gas consumption
* on subsequent operations
* @param provider The address of the LendingPoolAddressesProvider
**/
function initialize(ILendingPoolAddressesProvider provider) public initializer {
_addressesProvider = provider;
_maxStableRateBorrowSizePercent = 2500;
_flashLoanPremiumTotal = 9;
_maxNumberOfReserves = 128;
}
/**
* @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
* - E.g. User deposits 100 USDC and gets in return 100 aUSDC
* @param asset The address of the underlying asset to deposit
* @param amount The amount to be deposited
* @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
* wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
* is a different wallet
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function deposit(
address asset,
uint256 amount,
address onBehalfOf,
uint16 referralCode
) public virtual override whenNotPaused {
DataTypes.ReserveData storage reserve = _reserves[asset];
ValidationLogic.validateDeposit(reserve, amount);
address aToken = reserve.aTokenAddress;
reserve.updateState();
reserve.updateInterestRates(asset, aToken, amount, 0);
IERC20(asset).safeTransferFrom(msg.sender, aToken, amount);
bool isFirstDeposit = IAToken(aToken).mint(onBehalfOf, amount, reserve.liquidityIndex);
if (isFirstDeposit) {
_usersConfig[onBehalfOf].setUsingAsCollateral(reserve.id, true);
emit ReserveUsedAsCollateralEnabled(asset, onBehalfOf);
}
emit Deposit(asset, msg.sender, onBehalfOf, amount, referralCode);
}
/**
* @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
* E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
* @param asset The address of the underlying asset to withdraw
* @param amount The underlying amount to be withdrawn
* - Send the value type(uint256).max in order to withdraw the whole aToken balance
* @param to Address that will receive the underlying, same as msg.sender if the user
* wants to receive it on his own wallet, or a different address if the beneficiary is a
* different wallet
* @return The final amount withdrawn
**/
function withdraw(
address asset,
uint256 amount,
address to
) public virtual override whenNotPaused returns (uint256) {
return _executeWithdraw(asset, amount, to);
}
/**
* @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
* already deposited enough collateral, or he was given enough allowance by a credit delegator on the
* corresponding debt token (StableDebtToken or VariableDebtToken)
* - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
* and 100 stable/variable debt tokens, depending on the `interestRateMode`
* @param asset The address of the underlying asset to borrow
* @param amount The amount to be borrowed
* @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
* @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
* calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
* if he has been given credit delegation allowance
**/
function borrow(
address asset,
uint256 amount,
uint256 interestRateMode,
uint16 referralCode,
address onBehalfOf
) public virtual override whenNotPaused {
DataTypes.ReserveData storage reserve = _reserves[asset];
_executeBorrow(
ExecuteBorrowParams(
asset,
msg.sender,
onBehalfOf,
amount,
interestRateMode,
reserve.aTokenAddress,
referralCode,
true
)
);
}
/**
* @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
* - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
* @param asset The address of the borrowed underlying asset previously borrowed
* @param amount The amount to repay
* - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
* @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
* @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
* user calling the function if he wants to reduce/remove his own debt, or the address of any other
* other borrower whose debt should be removed
* @return The final amount repaid
**/
function repay(
address asset,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) public virtual override whenNotPaused returns (uint256) {
return _executeRepay(asset, amount, rateMode, onBehalfOf);
}
/**
* @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
* @param asset The address of the underlying asset borrowed
* @param rateMode The rate mode that the user wants to swap to
**/
function swapBorrowRateMode(address asset, uint256 rateMode) public virtual override whenNotPaused {
DataTypes.ReserveData storage reserve = _reserves[asset];
(uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebt(msg.sender, reserve);
DataTypes.InterestRateMode interestRateMode = DataTypes.InterestRateMode(rateMode);
ValidationLogic.validateSwapRateMode(
reserve,
_usersConfig[msg.sender],
stableDebt,
variableDebt,
interestRateMode
);
reserve.updateState();
if (interestRateMode == DataTypes.InterestRateMode.STABLE) {
IStableDebtToken(reserve.stableDebtTokenAddress).burn(msg.sender, stableDebt);
IVariableDebtToken(reserve.variableDebtTokenAddress).mint(
msg.sender,
msg.sender,
stableDebt,
reserve.variableBorrowIndex
);
} else {
IVariableDebtToken(reserve.variableDebtTokenAddress).burn(
msg.sender,
variableDebt,
reserve.variableBorrowIndex
);
IStableDebtToken(reserve.stableDebtTokenAddress).mint(
msg.sender,
msg.sender,
variableDebt,
reserve.currentStableBorrowRate
);
}
reserve.updateInterestRates(asset, reserve.aTokenAddress, 0, 0);
emit Swap(asset, msg.sender, rateMode);
}
/**
* @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
* - Users can be rebalanced if the following conditions are satisfied:
* 1. Usage ratio is above 95%
* 2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
* borrowed at a stable rate and depositors are not earning enough
* @param asset The address of the underlying asset borrowed
* @param user The address of the user to be rebalanced
**/
function rebalanceStableBorrowRate(address asset, address user) public virtual override whenNotPaused {
DataTypes.ReserveData storage reserve = _reserves[asset];
IERC20 stableDebtToken = IERC20(reserve.stableDebtTokenAddress);
IERC20 variableDebtToken = IERC20(reserve.variableDebtTokenAddress);
address aTokenAddress = reserve.aTokenAddress;
uint256 stableDebt = IERC20(stableDebtToken).balanceOf(user);
ValidationLogic.validateRebalanceStableBorrowRate(
reserve,
asset,
stableDebtToken,
variableDebtToken,
aTokenAddress
);
reserve.updateState();
IStableDebtToken(address(stableDebtToken)).burn(user, stableDebt);
IStableDebtToken(address(stableDebtToken)).mint(
user,
user,
stableDebt,
reserve.currentStableBorrowRate
);
reserve.updateInterestRates(asset, aTokenAddress, 0, 0);
emit RebalanceStableBorrowRate(asset, user);
}
/**
* @dev Allows depositors to enable/disable a specific deposited asset as collateral
* @param asset The address of the underlying asset deposited
* @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
**/
function setUserUseReserveAsCollateral(address asset, bool useAsCollateral)
public
virtual
override
whenNotPaused
{
DataTypes.ReserveData storage reserve = _reserves[asset];
ValidationLogic.validateSetUseReserveAsCollateral(
reserve,
asset,
useAsCollateral,
_reserves,
_usersConfig[msg.sender],
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
_usersConfig[msg.sender].setUsingAsCollateral(reserve.id, useAsCollateral);
if (useAsCollateral) {
emit ReserveUsedAsCollateralEnabled(asset, msg.sender);
} else {
emit ReserveUsedAsCollateralDisabled(asset, msg.sender);
}
}
/**
* @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
* - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
function liquidationCall(
address collateralAsset,
address debtAsset,
address user,
uint256 debtToCover,
bool receiveAToken
) public virtual override whenNotPaused {
address collateralManager = _addressesProvider.getLendingPoolCollateralManager();
//solium-disable-next-line
(bool success, bytes memory result) =
collateralManager.delegatecall(
abi.encodeWithSignature(
'liquidationCall(address,address,address,uint256,bool)',
collateralAsset,
debtAsset,
user,
debtToCover,
receiveAToken
)
);
require(success, Errors.LP_LIQUIDATION_CALL_FAILED);
(uint256 returnCode, string memory returnMessage) = abi.decode(result, (uint256, string));
require(returnCode == 0, string(abi.encodePacked(returnMessage)));
}
struct FlashLoanLocalVars {
IFlashLoanReceiver receiver;
address oracle;
uint256 i;
address currentAsset;
address currentATokenAddress;
uint256 currentAmount;
uint256 currentPremium;
uint256 currentAmountPlusPremium;
address debtToken;
}
/**
* @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned.
* IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
* For further details please visit https://developers.aave.com
* @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
* @param assets The addresses of the assets being flash-borrowed
* @param amounts The amounts amounts being flash-borrowed
* @param modes Types of the debt to open if the flash loan is not returned:
* 0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
* 1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* 2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
* @param onBehalfOf The address that will receive the debt in the case of using on `modes` 1 or 2
* @param params Variadic packed params to pass to the receiver as extra information
* @param referralCode Code used to register the integrator originating the operation, for potential rewards.
* 0 if the action is executed directly by the user, without any middle-man
**/
function flashLoan(
address receiverAddress,
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata modes,
address onBehalfOf,
bytes calldata params,
uint16 referralCode
) public virtual override whenNotPaused {
FlashLoanLocalVars memory vars;
ValidationLogic.validateFlashloan(assets, amounts);
address[] memory aTokenAddresses = new address[](assets.length);
uint256[] memory premiums = new uint256[](assets.length);
vars.receiver = IFlashLoanReceiver(receiverAddress);
for (vars.i = 0; vars.i < assets.length; vars.i++) {
aTokenAddresses[vars.i] = _reserves[assets[vars.i]].aTokenAddress;
premiums[vars.i] = amounts[vars.i].mul(_flashLoanPremiumTotal).div(10000);
IAToken(aTokenAddresses[vars.i]).transferUnderlyingTo(receiverAddress, amounts[vars.i]);
}
require(
vars.receiver.executeOperation(assets, amounts, premiums, msg.sender, params),
Errors.LP_INVALID_FLASH_LOAN_EXECUTOR_RETURN
);
for (vars.i = 0; vars.i < assets.length; vars.i++) {
vars.currentAsset = assets[vars.i];
vars.currentAmount = amounts[vars.i];
vars.currentPremium = premiums[vars.i];
vars.currentATokenAddress = aTokenAddresses[vars.i];
vars.currentAmountPlusPremium = vars.currentAmount.add(vars.currentPremium);
if (DataTypes.InterestRateMode(modes[vars.i]) == DataTypes.InterestRateMode.NONE) {
_reserves[vars.currentAsset].updateState();
_reserves[vars.currentAsset].cumulateToLiquidityIndex(
IERC20(vars.currentATokenAddress).totalSupply(),
vars.currentPremium
);
_reserves[vars.currentAsset].updateInterestRates(
vars.currentAsset,
vars.currentATokenAddress,
vars.currentAmountPlusPremium,
0
);
IERC20(vars.currentAsset).safeTransferFrom(
receiverAddress,
vars.currentATokenAddress,
vars.currentAmountPlusPremium
);
} else {
// If the user chose to not return the funds, the system checks if there is enough collateral and
// eventually opens a debt position
_executeBorrow(
ExecuteBorrowParams(
vars.currentAsset,
msg.sender,
onBehalfOf,
vars.currentAmount,
modes[vars.i],
vars.currentATokenAddress,
referralCode,
false
)
);
}
emit FlashLoan(
receiverAddress,
msg.sender,
vars.currentAsset,
vars.currentAmount,
vars.currentPremium,
referralCode
);
}
}
/**
* @dev Returns the state and configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The state of the reserve
**/
function getReserveData(address asset)
external
view
override
returns (DataTypes.ReserveData memory)
{
return _reserves[asset];
}
/**
* @dev Returns the user account data across all the reserves
* @param user The address of the user
* @return totalCollateralETH the total collateral in ETH of the user
* @return totalDebtETH the total debt in ETH of the user
* @return availableBorrowsETH the borrowing power left of the user
* @return currentLiquidationThreshold the liquidation threshold of the user
* @return ltv the loan to value of the user
* @return healthFactor the current health factor of the user
**/
function getUserAccountData(address user)
external
view
override
returns (
uint256 totalCollateralETH,
uint256 totalDebtETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
)
{
(
totalCollateralETH,
totalDebtETH,
ltv,
currentLiquidationThreshold,
healthFactor
) = GenericLogic.calculateUserAccountData(
user,
_reserves,
_usersConfig[user],
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
availableBorrowsETH = GenericLogic.calculateAvailableBorrowsETH(
totalCollateralETH,
totalDebtETH,
ltv
);
}
/**
* @dev Returns the configuration of the reserve
* @param asset The address of the underlying asset of the reserve
* @return The configuration of the reserve
**/
function getConfiguration(address asset)
external
view
override
returns (DataTypes.ReserveConfigurationMap memory)
{
return _reserves[asset].configuration;
}
/**
* @dev Returns the configuration of the user across all the reserves
* @param user The user address
* @return The configuration of the user
**/
function getUserConfiguration(address user)
external
view
override
returns (DataTypes.UserConfigurationMap memory)
{
return _usersConfig[user];
}
/**
* @dev Returns the normalized income per unit of asset
* @param asset The address of the underlying asset of the reserve
* @return The reserve's normalized income
*/
function getReserveNormalizedIncome(address asset)
external
view
virtual
override
returns (uint256)
{
return _reserves[asset].getNormalizedIncome();
}
/**
* @dev Returns the normalized variable debt per unit of asset
* @param asset The address of the underlying asset of the reserve
* @return The reserve normalized variable debt
*/
function getReserveNormalizedVariableDebt(address asset)
external
view
override
returns (uint256)
{
return _reserves[asset].getNormalizedDebt();
}
/**
* @dev Returns if the LendingPool is paused
*/
function paused() external view override returns (bool) {
return _paused;
}
/**
* @dev Returns the list of the initialized reserves
**/
function getReservesList() external view override returns (address[] memory) {
address[] memory _activeReserves = new address[](_reservesCount);
for (uint256 i = 0; i < _reservesCount; i++) {
_activeReserves[i] = _reservesList[i];
}
return _activeReserves;
}
/**
* @dev Returns the cached LendingPoolAddressesProvider connected to this contract
**/
function getAddressesProvider() external view override returns (ILendingPoolAddressesProvider) {
return _addressesProvider;
}
/**
* @dev Returns the percentage of available liquidity that can be borrowed at once at stable rate
*/
function MAX_STABLE_RATE_BORROW_SIZE_PERCENT() public view returns (uint256) {
return _maxStableRateBorrowSizePercent;
}
/**
* @dev Returns the fee on flash loans
*/
function FLASHLOAN_PREMIUM_TOTAL() public view returns (uint256) {
return _flashLoanPremiumTotal;
}
/**
* @dev Returns the maximum number of reserves supported to be listed in this LendingPool
*/
function MAX_NUMBER_RESERVES() public view returns (uint256) {
return _maxNumberOfReserves;
}
/**
* @dev Validates and finalizes an aToken transfer
* - Only callable by the overlying aToken of the `asset`
* @param asset The address of the underlying asset of the aToken
* @param from The user from which the aTokens are transferred
* @param to The user receiving the aTokens
* @param amount The amount being transferred/withdrawn
* @param balanceFromBefore The aToken balance of the `from` user before the transfer
* @param balanceToBefore The aToken balance of the `to` user before the transfer
*/
function finalizeTransfer(
address asset,
address from,
address to,
uint256 amount,
uint256 balanceFromBefore,
uint256 balanceToBefore
) public virtual override whenNotPaused {
require(msg.sender == _reserves[asset].aTokenAddress, Errors.LP_CALLER_MUST_BE_AN_ATOKEN);
ValidationLogic.validateTransfer(
from,
_reserves,
_usersConfig[from],
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
uint256 reserveId = _reserves[asset].id;
if (from != to) {
if (balanceFromBefore.sub(amount) == 0) {
DataTypes.UserConfigurationMap storage fromConfig = _usersConfig[from];
fromConfig.setUsingAsCollateral(reserveId, false);
emit ReserveUsedAsCollateralDisabled(asset, from);
}
if (balanceToBefore == 0 && amount != 0) {
DataTypes.UserConfigurationMap storage toConfig = _usersConfig[to];
toConfig.setUsingAsCollateral(reserveId, true);
emit ReserveUsedAsCollateralEnabled(asset, to);
}
}
}
/**
* @dev Initializes a reserve, activating it, assigning an aToken and debt tokens and an
* interest rate strategy
* - Only callable by the LendingPoolConfigurator contract
* @param asset The address of the underlying asset of the reserve
* @param aTokenAddress The address of the aToken that will be assigned to the reserve
* @param stableDebtAddress The address of the StableDebtToken that will be assigned to the reserve
* @param aTokenAddress The address of the VariableDebtToken that will be assigned to the reserve
* @param interestRateStrategyAddress The address of the interest rate strategy contract
**/
function initReserve(
address asset,
address aTokenAddress,
address stableDebtAddress,
address variableDebtAddress,
address interestRateStrategyAddress
) external override onlyLendingPoolConfigurator {
require(Address.isContract(asset), Errors.LP_NOT_CONTRACT);
_reserves[asset].init(
aTokenAddress,
stableDebtAddress,
variableDebtAddress,
interestRateStrategyAddress
);
_addReserveToList(asset);
}
/**
* @dev Updates the address of the interest rate strategy contract
* - Only callable by the LendingPoolConfigurator contract
* @param asset The address of the underlying asset of the reserve
* @param rateStrategyAddress The address of the interest rate strategy contract
**/
function setReserveInterestRateStrategyAddress(address asset, address rateStrategyAddress)
external
override
onlyLendingPoolConfigurator
{
_reserves[asset].interestRateStrategyAddress = rateStrategyAddress;
}
/**
* @dev Sets the configuration bitmap of the reserve as a whole
* - Only callable by the LendingPoolConfigurator contract
* @param asset The address of the underlying asset of the reserve
* @param configuration The new configuration bitmap
**/
function setConfiguration(address asset, uint256 configuration)
external
override
onlyLendingPoolConfigurator
{
_reserves[asset].configuration.data = configuration;
}
/**
* @dev Set the _pause state of a reserve
* - Only callable by the LendingPoolConfigurator contract
* @param val `true` to pause the reserve, `false` to un-pause it
*/
function setPause(bool val) external override onlyLendingPoolConfigurator {
_paused = val;
if (_paused) {
emit Paused();
} else {
emit Unpaused();
}
}
struct ExecuteBorrowParams {
address asset;
address user;
address onBehalfOf;
uint256 amount;
uint256 interestRateMode;
address aTokenAddress;
uint16 referralCode;
bool releaseUnderlying;
}
function _executeBorrow(ExecuteBorrowParams memory vars) internal {
DataTypes.ReserveData storage reserve = _reserves[vars.asset];
DataTypes.UserConfigurationMap storage userConfig = _usersConfig[vars.onBehalfOf];
address oracle = _addressesProvider.getPriceOracle();
uint256 amountInETH =
IPriceOracleGetter(oracle).getAssetPrice(vars.asset).mul(vars.amount).div(
10**reserve.configuration.getDecimals()
);
ValidationLogic.validateBorrow(
vars.asset,
reserve,
vars.onBehalfOf,
vars.amount,
amountInETH,
vars.interestRateMode,
_maxStableRateBorrowSizePercent,
_reserves,
userConfig,
_reservesList,
_reservesCount,
oracle
);
reserve.updateState();
uint256 currentStableRate = 0;
bool isFirstBorrowing = false;
if (DataTypes.InterestRateMode(vars.interestRateMode) == DataTypes.InterestRateMode.STABLE) {
currentStableRate = reserve.currentStableBorrowRate;
isFirstBorrowing = IStableDebtToken(reserve.stableDebtTokenAddress).mint(
vars.user,
vars.onBehalfOf,
vars.amount,
currentStableRate
);
} else {
isFirstBorrowing = IVariableDebtToken(reserve.variableDebtTokenAddress).mint(
vars.user,
vars.onBehalfOf,
vars.amount,
reserve.variableBorrowIndex
);
}
if (isFirstBorrowing) {
userConfig.setBorrowing(reserve.id, true);
}
reserve.updateInterestRates(
vars.asset,
vars.aTokenAddress,
0,
vars.releaseUnderlying ? vars.amount : 0
);
if (vars.releaseUnderlying) {
IAToken(vars.aTokenAddress).transferUnderlyingTo(vars.user, vars.amount);
}
emit Borrow(
vars.asset,
vars.user,
vars.onBehalfOf,
vars.amount,
vars.interestRateMode,
DataTypes.InterestRateMode(vars.interestRateMode) == DataTypes.InterestRateMode.STABLE
? currentStableRate
: reserve.currentVariableBorrowRate,
vars.referralCode
);
}
function _executeWithdraw(
address asset,
uint256 amount,
address to
) internal returns (uint256) {
DataTypes.ReserveData storage reserve = _reserves[asset];
address aToken = reserve.aTokenAddress;
uint256 userBalance = IAToken(aToken).balanceOf(msg.sender);
uint256 amountToWithdraw = amount;
if (amount == type(uint256).max) {
amountToWithdraw = userBalance;
}
ValidationLogic.validateWithdraw(
asset,
amountToWithdraw,
userBalance,
_reserves,
_usersConfig[msg.sender],
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
reserve.updateState();
reserve.updateInterestRates(asset, aToken, 0, amountToWithdraw);
if (amountToWithdraw == userBalance) {
_usersConfig[msg.sender].setUsingAsCollateral(reserve.id, false);
emit ReserveUsedAsCollateralDisabled(asset, msg.sender);
}
IAToken(aToken).burn(msg.sender, to, amountToWithdraw, reserve.liquidityIndex);
emit Withdraw(asset, msg.sender, to, amountToWithdraw);
return amountToWithdraw;
}
function _executeRepay(
address asset,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) internal returns (uint256) {
DataTypes.ReserveData storage reserve = _reserves[asset];
(uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebt(onBehalfOf, reserve);
DataTypes.InterestRateMode interestRateMode = DataTypes.InterestRateMode(rateMode);
ValidationLogic.validateRepay(
reserve,
amount,
interestRateMode,
onBehalfOf,
stableDebt,
variableDebt
);
uint256 paybackAmount =
interestRateMode == DataTypes.InterestRateMode.STABLE ? stableDebt : variableDebt;
if (amount < paybackAmount) {
paybackAmount = amount;
}
reserve.updateState();
if (interestRateMode == DataTypes.InterestRateMode.STABLE) {
IStableDebtToken(reserve.stableDebtTokenAddress).burn(onBehalfOf, paybackAmount);
} else {
IVariableDebtToken(reserve.variableDebtTokenAddress).burn(
onBehalfOf,
paybackAmount,
reserve.variableBorrowIndex
);
}
address aToken = reserve.aTokenAddress;
reserve.updateInterestRates(asset, aToken, paybackAmount, 0);
if (stableDebt.add(variableDebt).sub(paybackAmount) == 0) {
_usersConfig[onBehalfOf].setBorrowing(reserve.id, false);
}
IERC20(asset).safeTransferFrom(msg.sender, aToken, paybackAmount);
IAToken(aToken).handleRepayment(msg.sender, paybackAmount);
emit Repay(asset, onBehalfOf, msg.sender, paybackAmount);
return paybackAmount;
}
function _addReserveToList(address asset) internal {
uint256 reservesCount = _reservesCount;
require(reservesCount < _maxNumberOfReserves, Errors.LP_NO_MORE_RESERVES_ALLOWED);
bool reserveAlreadyAdded = _reserves[asset].id != 0 || _reservesList[0] == asset;
if (!reserveAlreadyAdded) {
_reserves[asset].id = uint8(reservesCount);
_reservesList[reservesCount] = asset;
_reservesCount = reservesCount + 1;
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {ILendingPoolAddressesProvider} from './ILendingPoolAddressesProvider.sol';
import {ILendingPool} from './ILendingPool.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
interface IPermissionedLendingPool is ILendingPool {
/**
* @dev Function to seize the collateral of a user. Only whitelisters of the user can call this function
* @param assets The addresses of the underlying assets to seize
* @param to The address that will receive the funds
**/
function seize(
address user,
address[] calldata assets,
address to
) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol';
import {DataTypes} from '../types/DataTypes.sol';
/**
* @title Helpers library
* @author Aave
*/
library Helpers {
/**
* @dev Fetches the user current stable and variable debt balances
* @param user The user address
* @param reserve The reserve data object
* @return The stable and variable debt balance
**/
function getUserCurrentDebt(address user, DataTypes.ReserveData storage reserve)
internal
view
returns (uint256, uint256)
{
return (
IERC20(reserve.stableDebtTokenAddress).balanceOf(user),
IERC20(reserve.variableDebtTokenAddress).balanceOf(user)
);
}
function getUserCurrentDebtMemory(address user, DataTypes.ReserveData memory reserve)
internal
view
returns (uint256, uint256)
{
return (
IERC20(reserve.stableDebtTokenAddress).balanceOf(user),
IERC20(reserve.variableDebtTokenAddress).balanceOf(user)
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {SafeMath} from '../../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol';
import {SafeERC20} from '../../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {IAToken} from '../../../interfaces/IAToken.sol';
import {IStableDebtToken} from '../../../interfaces/IStableDebtToken.sol';
import {IVariableDebtToken} from '../../../interfaces/IVariableDebtToken.sol';
import {IReserveInterestRateStrategy} from '../../../interfaces/IReserveInterestRateStrategy.sol';
import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol';
import {MathUtils} from '../math/MathUtils.sol';
import {WadRayMath} from '../math/WadRayMath.sol';
import {PercentageMath} from '../math/PercentageMath.sol';
import {Errors} from '../helpers/Errors.sol';
import {DataTypes} from '../types/DataTypes.sol';
/**
* @title ReserveLogic library
* @author Aave
* @notice Implements the logic to update the reserves state
*/
library ReserveLogic {
using SafeMath for uint256;
using WadRayMath for uint256;
using PercentageMath for uint256;
using SafeERC20 for IERC20;
/**
* @dev Emitted when the state of a reserve is updated
* @param asset The address of the underlying asset of the reserve
* @param liquidityRate The new liquidity rate
* @param stableBorrowRate The new stable borrow rate
* @param variableBorrowRate The new variable borrow rate
* @param liquidityIndex The new liquidity index
* @param variableBorrowIndex The new variable borrow index
**/
event ReserveDataUpdated(
address indexed asset,
uint256 liquidityRate,
uint256 stableBorrowRate,
uint256 variableBorrowRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex
);
using ReserveLogic for DataTypes.ReserveData;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
/**
* @dev Returns the ongoing normalized income for the reserve
* A value of 1e27 means there is no income. As time passes, the income is accrued
* A value of 2*1e27 means for each unit of asset one unit of income has been accrued
* @param reserve The reserve object
* @return the normalized income. expressed in ray
**/
function getNormalizedIncome(DataTypes.ReserveData storage reserve)
internal
view
returns (uint256)
{
uint40 timestamp = reserve.lastUpdateTimestamp;
//solium-disable-next-line
if (timestamp == uint40(block.timestamp)) {
//if the index was updated in the same block, no need to perform any calculation
return reserve.liquidityIndex;
}
uint256 cumulated =
MathUtils.calculateLinearInterest(reserve.currentLiquidityRate, timestamp).rayMul(
reserve.liquidityIndex
);
return cumulated;
}
/**
* @dev Returns the ongoing normalized variable debt for the reserve
* A value of 1e27 means there is no debt. As time passes, the income is accrued
* A value of 2*1e27 means that for each unit of debt, one unit worth of interest has been accumulated
* @param reserve The reserve object
* @return The normalized variable debt. expressed in ray
**/
function getNormalizedDebt(DataTypes.ReserveData storage reserve)
internal
view
returns (uint256)
{
uint40 timestamp = reserve.lastUpdateTimestamp;
//solium-disable-next-line
if (timestamp == uint40(block.timestamp)) {
//if the index was updated in the same block, no need to perform any calculation
return reserve.variableBorrowIndex;
}
uint256 cumulated =
MathUtils.calculateCompoundedInterest(reserve.currentVariableBorrowRate, timestamp).rayMul(
reserve.variableBorrowIndex
);
return cumulated;
}
/**
* @dev Updates the liquidity cumulative index and the variable borrow index.
* @param reserve the reserve object
**/
function updateState(DataTypes.ReserveData storage reserve) internal {
uint256 scaledVariableDebt =
IVariableDebtToken(reserve.variableDebtTokenAddress).scaledTotalSupply();
uint256 previousVariableBorrowIndex = reserve.variableBorrowIndex;
uint256 previousLiquidityIndex = reserve.liquidityIndex;
uint40 lastUpdatedTimestamp = reserve.lastUpdateTimestamp;
(uint256 newLiquidityIndex, uint256 newVariableBorrowIndex) =
_updateIndexes(
reserve,
scaledVariableDebt,
previousLiquidityIndex,
previousVariableBorrowIndex,
lastUpdatedTimestamp
);
_mintToTreasury(
reserve,
scaledVariableDebt,
previousVariableBorrowIndex,
newLiquidityIndex,
newVariableBorrowIndex,
lastUpdatedTimestamp
);
}
/**
* @dev Accumulates a predefined amount of asset to the reserve as a fixed, instantaneous income. Used for example to accumulate
* the flashloan fee to the reserve, and spread it between all the depositors
* @param reserve The reserve object
* @param totalLiquidity The total liquidity available in the reserve
* @param amount The amount to accomulate
**/
function cumulateToLiquidityIndex(
DataTypes.ReserveData storage reserve,
uint256 totalLiquidity,
uint256 amount
) internal {
uint256 amountToLiquidityRatio = amount.wadToRay().rayDiv(totalLiquidity.wadToRay());
uint256 result = amountToLiquidityRatio.add(WadRayMath.ray());
result = result.rayMul(reserve.liquidityIndex);
require(result <= type(uint128).max, Errors.RL_LIQUIDITY_INDEX_OVERFLOW);
reserve.liquidityIndex = uint128(result);
}
/**
* @dev Initializes a reserve
* @param reserve The reserve object
* @param aTokenAddress The address of the overlying atoken contract
* @param interestRateStrategyAddress The address of the interest rate strategy contract
**/
function init(
DataTypes.ReserveData storage reserve,
address aTokenAddress,
address stableDebtTokenAddress,
address variableDebtTokenAddress,
address interestRateStrategyAddress
) external {
require(reserve.aTokenAddress == address(0), Errors.RL_RESERVE_ALREADY_INITIALIZED);
reserve.liquidityIndex = uint128(WadRayMath.ray());
reserve.variableBorrowIndex = uint128(WadRayMath.ray());
reserve.aTokenAddress = aTokenAddress;
reserve.stableDebtTokenAddress = stableDebtTokenAddress;
reserve.variableDebtTokenAddress = variableDebtTokenAddress;
reserve.interestRateStrategyAddress = interestRateStrategyAddress;
}
struct UpdateInterestRatesLocalVars {
address stableDebtTokenAddress;
uint256 availableLiquidity;
uint256 totalStableDebt;
uint256 newLiquidityRate;
uint256 newStableRate;
uint256 newVariableRate;
uint256 avgStableRate;
uint256 totalVariableDebt;
}
/**
* @dev Updates the reserve current stable borrow rate, the current variable borrow rate and the current liquidity rate
* @param reserve The address of the reserve to be updated
* @param liquidityAdded The amount of liquidity added to the protocol (deposit or repay) in the previous action
* @param liquidityTaken The amount of liquidity taken from the protocol (redeem or borrow)
**/
function updateInterestRates(
DataTypes.ReserveData storage reserve,
address reserveAddress,
address aTokenAddress,
uint256 liquidityAdded,
uint256 liquidityTaken
) internal {
UpdateInterestRatesLocalVars memory vars;
vars.stableDebtTokenAddress = reserve.stableDebtTokenAddress;
(vars.totalStableDebt, vars.avgStableRate) = IStableDebtToken(vars.stableDebtTokenAddress)
.getTotalSupplyAndAvgRate();
//calculates the total variable debt locally using the scaled total supply instead
//of totalSupply(), as it's noticeably cheaper. Also, the index has been
//updated by the previous updateState() call
vars.totalVariableDebt = IVariableDebtToken(reserve.variableDebtTokenAddress)
.scaledTotalSupply()
.rayMul(reserve.variableBorrowIndex);
(
vars.newLiquidityRate,
vars.newStableRate,
vars.newVariableRate
) = IReserveInterestRateStrategy(reserve.interestRateStrategyAddress).calculateInterestRates(
reserveAddress,
aTokenAddress,
liquidityAdded,
liquidityTaken,
vars.totalStableDebt,
vars.totalVariableDebt,
vars.avgStableRate,
reserve.configuration.getReserveFactor()
);
require(vars.newLiquidityRate <= type(uint128).max, Errors.RL_LIQUIDITY_RATE_OVERFLOW);
require(vars.newStableRate <= type(uint128).max, Errors.RL_STABLE_BORROW_RATE_OVERFLOW);
require(vars.newVariableRate <= type(uint128).max, Errors.RL_VARIABLE_BORROW_RATE_OVERFLOW);
reserve.currentLiquidityRate = uint128(vars.newLiquidityRate);
reserve.currentStableBorrowRate = uint128(vars.newStableRate);
reserve.currentVariableBorrowRate = uint128(vars.newVariableRate);
emit ReserveDataUpdated(
reserveAddress,
vars.newLiquidityRate,
vars.newStableRate,
vars.newVariableRate,
reserve.liquidityIndex,
reserve.variableBorrowIndex
);
}
struct MintToTreasuryLocalVars {
uint256 currentStableDebt;
uint256 principalStableDebt;
uint256 previousStableDebt;
uint256 currentVariableDebt;
uint256 previousVariableDebt;
uint256 avgStableRate;
uint256 cumulatedStableInterest;
uint256 totalDebtAccrued;
uint256 amountToMint;
uint256 reserveFactor;
uint40 stableSupplyUpdatedTimestamp;
}
/**
* @dev Mints part of the repaid interest to the reserve treasury as a function of the reserveFactor for the
* specific asset.
* @param reserve The reserve reserve to be updated
* @param scaledVariableDebt The current scaled total variable debt
* @param previousVariableBorrowIndex The variable borrow index before the last accumulation of the interest
* @param newLiquidityIndex The new liquidity index
* @param newVariableBorrowIndex The variable borrow index after the last accumulation of the interest
**/
function _mintToTreasury(
DataTypes.ReserveData storage reserve,
uint256 scaledVariableDebt,
uint256 previousVariableBorrowIndex,
uint256 newLiquidityIndex,
uint256 newVariableBorrowIndex,
uint40 timestamp
) internal {
MintToTreasuryLocalVars memory vars;
vars.reserveFactor = reserve.configuration.getReserveFactor();
if (vars.reserveFactor == 0) {
return;
}
//fetching the principal, total stable debt and the avg stable rate
(
vars.principalStableDebt,
vars.currentStableDebt,
vars.avgStableRate,
vars.stableSupplyUpdatedTimestamp
) = IStableDebtToken(reserve.stableDebtTokenAddress).getSupplyData();
//calculate the last principal variable debt
vars.previousVariableDebt = scaledVariableDebt.rayMul(previousVariableBorrowIndex);
//calculate the new total supply after accumulation of the index
vars.currentVariableDebt = scaledVariableDebt.rayMul(newVariableBorrowIndex);
//calculate the stable debt until the last timestamp update
vars.cumulatedStableInterest = MathUtils.calculateCompoundedInterest(
vars.avgStableRate,
vars.stableSupplyUpdatedTimestamp,
timestamp
);
vars.previousStableDebt = vars.principalStableDebt.rayMul(vars.cumulatedStableInterest);
//debt accrued is the sum of the current debt minus the sum of the debt at the last update
vars.totalDebtAccrued = vars
.currentVariableDebt
.add(vars.currentStableDebt)
.sub(vars.previousVariableDebt)
.sub(vars.previousStableDebt);
vars.amountToMint = vars.totalDebtAccrued.percentMul(vars.reserveFactor);
if (vars.amountToMint != 0) {
IAToken(reserve.aTokenAddress).mintToTreasury(vars.amountToMint, newLiquidityIndex);
}
}
/**
* @dev Updates the reserve indexes and the timestamp of the update
* @param reserve The reserve reserve to be updated
* @param scaledVariableDebt The scaled variable debt
* @param liquidityIndex The last stored liquidity index
* @param variableBorrowIndex The last stored variable borrow index
**/
function _updateIndexes(
DataTypes.ReserveData storage reserve,
uint256 scaledVariableDebt,
uint256 liquidityIndex,
uint256 variableBorrowIndex,
uint40 timestamp
) internal returns (uint256, uint256) {
uint256 currentLiquidityRate = reserve.currentLiquidityRate;
uint256 newLiquidityIndex = liquidityIndex;
uint256 newVariableBorrowIndex = variableBorrowIndex;
//only cumulating if there is any income being produced
if (currentLiquidityRate > 0) {
uint256 cumulatedLiquidityInterest =
MathUtils.calculateLinearInterest(currentLiquidityRate, timestamp);
newLiquidityIndex = cumulatedLiquidityInterest.rayMul(liquidityIndex);
require(newLiquidityIndex <= type(uint128).max, Errors.RL_LIQUIDITY_INDEX_OVERFLOW);
reserve.liquidityIndex = uint128(newLiquidityIndex);
//as the liquidity rate might come only from stable rate loans, we need to ensure
//that there is actual variable debt before accumulating
if (scaledVariableDebt != 0) {
uint256 cumulatedVariableBorrowInterest =
MathUtils.calculateCompoundedInterest(reserve.currentVariableBorrowRate, timestamp);
newVariableBorrowIndex = cumulatedVariableBorrowInterest.rayMul(variableBorrowIndex);
require(
newVariableBorrowIndex <= type(uint128).max,
Errors.RL_VARIABLE_BORROW_INDEX_OVERFLOW
);
reserve.variableBorrowIndex = uint128(newVariableBorrowIndex);
}
}
//solium-disable-next-line
reserve.lastUpdateTimestamp = uint40(block.timestamp);
return (newLiquidityIndex, newVariableBorrowIndex);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {SafeMath} from '../../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol';
import {ReserveLogic} from './ReserveLogic.sol';
import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../configuration/UserConfiguration.sol';
import {WadRayMath} from '../math/WadRayMath.sol';
import {PercentageMath} from '../math/PercentageMath.sol';
import {IPriceOracleGetter} from '../../../interfaces/IPriceOracleGetter.sol';
import {DataTypes} from '../types/DataTypes.sol';
/**
* @title GenericLogic library
* @author Aave
* @title Implements protocol-level logic to calculate and validate the state of a user
*/
library GenericLogic {
using ReserveLogic for DataTypes.ReserveData;
using SafeMath for uint256;
using WadRayMath for uint256;
using PercentageMath for uint256;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
using UserConfiguration for DataTypes.UserConfigurationMap;
uint256 public constant HEALTH_FACTOR_LIQUIDATION_THRESHOLD = 1 ether;
struct balanceDecreaseAllowedLocalVars {
uint256 decimals;
uint256 liquidationThreshold;
uint256 totalCollateralInETH;
uint256 totalDebtInETH;
uint256 avgLiquidationThreshold;
uint256 amountToDecreaseInETH;
uint256 collateralBalanceAfterDecrease;
uint256 liquidationThresholdAfterDecrease;
uint256 healthFactorAfterDecrease;
bool reserveUsageAsCollateralEnabled;
}
/**
* @dev Checks if a specific balance decrease is allowed
* (i.e. doesn't bring the user borrow position health factor under HEALTH_FACTOR_LIQUIDATION_THRESHOLD)
* @param asset The address of the underlying asset of the reserve
* @param user The address of the user
* @param amount The amount to decrease
* @param reservesData The data of all the reserves
* @param userConfig The user configuration
* @param reserves The list of all the active reserves
* @param oracle The address of the oracle contract
* @return true if the decrease of the balance is allowed
**/
function balanceDecreaseAllowed(
address asset,
address user,
uint256 amount,
mapping(address => DataTypes.ReserveData) storage reservesData,
DataTypes.UserConfigurationMap calldata userConfig,
mapping(uint256 => address) storage reserves,
uint256 reservesCount,
address oracle
) external view returns (bool) {
if (!userConfig.isBorrowingAny() || !userConfig.isUsingAsCollateral(reservesData[asset].id)) {
return true;
}
balanceDecreaseAllowedLocalVars memory vars;
(, vars.liquidationThreshold, , vars.decimals, ) = reservesData[asset]
.configuration
.getParams();
if (vars.liquidationThreshold == 0) {
return true;
}
(
vars.totalCollateralInETH,
vars.totalDebtInETH,
,
vars.avgLiquidationThreshold,
) = calculateUserAccountData(user, reservesData, userConfig, reserves, reservesCount, oracle);
if (vars.totalDebtInETH == 0) {
return true;
}
vars.amountToDecreaseInETH = IPriceOracleGetter(oracle).getAssetPrice(asset).mul(amount).div(
10**vars.decimals
);
vars.collateralBalanceAfterDecrease = vars.totalCollateralInETH.sub(vars.amountToDecreaseInETH);
//if there is a borrow, there can't be 0 collateral
if (vars.collateralBalanceAfterDecrease == 0) {
return false;
}
vars.liquidationThresholdAfterDecrease = vars
.totalCollateralInETH
.mul(vars.avgLiquidationThreshold)
.sub(vars.amountToDecreaseInETH.mul(vars.liquidationThreshold))
.div(vars.collateralBalanceAfterDecrease);
uint256 healthFactorAfterDecrease =
calculateHealthFactorFromBalances(
vars.collateralBalanceAfterDecrease,
vars.totalDebtInETH,
vars.liquidationThresholdAfterDecrease
);
return healthFactorAfterDecrease >= GenericLogic.HEALTH_FACTOR_LIQUIDATION_THRESHOLD;
}
struct CalculateUserAccountDataVars {
uint256 reserveUnitPrice;
uint256 tokenUnit;
uint256 compoundedLiquidityBalance;
uint256 compoundedBorrowBalance;
uint256 decimals;
uint256 ltv;
uint256 liquidationThreshold;
uint256 i;
uint256 healthFactor;
uint256 totalCollateralInETH;
uint256 totalDebtInETH;
uint256 avgLtv;
uint256 avgLiquidationThreshold;
uint256 reservesLength;
bool healthFactorBelowThreshold;
address currentReserveAddress;
bool usageAsCollateralEnabled;
bool userUsesReserveAsCollateral;
}
/**
* @dev Calculates the user data across the reserves.
* this includes the total liquidity/collateral/borrow balances in ETH,
* the average Loan To Value, the average Liquidation Ratio, and the Health factor.
* @param user The address of the user
* @param reservesData Data of all the reserves
* @param userConfig The configuration of the user
* @param reserves The list of the available reserves
* @param oracle The price oracle address
* @return The total collateral and total debt of the user in ETH, the avg ltv, liquidation threshold and the HF
**/
function calculateUserAccountData(
address user,
mapping(address => DataTypes.ReserveData) storage reservesData,
DataTypes.UserConfigurationMap memory userConfig,
mapping(uint256 => address) storage reserves,
uint256 reservesCount,
address oracle
)
internal
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256
)
{
CalculateUserAccountDataVars memory vars;
if (userConfig.isEmpty()) {
return (0, 0, 0, 0, uint256(-1));
}
for (vars.i = 0; vars.i < reservesCount; vars.i++) {
if (!userConfig.isUsingAsCollateralOrBorrowing(vars.i)) {
continue;
}
vars.currentReserveAddress = reserves[vars.i];
DataTypes.ReserveData storage currentReserve = reservesData[vars.currentReserveAddress];
(vars.ltv, vars.liquidationThreshold, , vars.decimals, ) = currentReserve
.configuration
.getParams();
vars.tokenUnit = 10**vars.decimals;
vars.reserveUnitPrice = IPriceOracleGetter(oracle).getAssetPrice(vars.currentReserveAddress);
if (vars.liquidationThreshold != 0 && userConfig.isUsingAsCollateral(vars.i)) {
vars.compoundedLiquidityBalance = IERC20(currentReserve.aTokenAddress).balanceOf(user);
uint256 liquidityBalanceETH =
vars.reserveUnitPrice.mul(vars.compoundedLiquidityBalance).div(vars.tokenUnit);
vars.totalCollateralInETH = vars.totalCollateralInETH.add(liquidityBalanceETH);
vars.avgLtv = vars.avgLtv.add(liquidityBalanceETH.mul(vars.ltv));
vars.avgLiquidationThreshold = vars.avgLiquidationThreshold.add(
liquidityBalanceETH.mul(vars.liquidationThreshold)
);
}
if (userConfig.isBorrowing(vars.i)) {
vars.compoundedBorrowBalance = IERC20(currentReserve.stableDebtTokenAddress).balanceOf(
user
);
vars.compoundedBorrowBalance = vars.compoundedBorrowBalance.add(
IERC20(currentReserve.variableDebtTokenAddress).balanceOf(user)
);
vars.totalDebtInETH = vars.totalDebtInETH.add(
vars.reserveUnitPrice.mul(vars.compoundedBorrowBalance).div(vars.tokenUnit)
);
}
}
vars.avgLtv = vars.totalCollateralInETH > 0 ? vars.avgLtv.div(vars.totalCollateralInETH) : 0;
vars.avgLiquidationThreshold = vars.totalCollateralInETH > 0
? vars.avgLiquidationThreshold.div(vars.totalCollateralInETH)
: 0;
vars.healthFactor = calculateHealthFactorFromBalances(
vars.totalCollateralInETH,
vars.totalDebtInETH,
vars.avgLiquidationThreshold
);
return (
vars.totalCollateralInETH,
vars.totalDebtInETH,
vars.avgLtv,
vars.avgLiquidationThreshold,
vars.healthFactor
);
}
/**
* @dev Calculates the health factor from the corresponding balances
* @param totalCollateralInETH The total collateral in ETH
* @param totalDebtInETH The total debt in ETH
* @param liquidationThreshold The avg liquidation threshold
* @return The health factor calculated from the balances provided
**/
function calculateHealthFactorFromBalances(
uint256 totalCollateralInETH,
uint256 totalDebtInETH,
uint256 liquidationThreshold
) internal pure returns (uint256) {
if (totalDebtInETH == 0) return uint256(-1);
return (totalCollateralInETH.percentMul(liquidationThreshold)).wadDiv(totalDebtInETH);
}
/**
* @dev Calculates the equivalent amount in ETH that an user can borrow, depending on the available collateral and the
* average Loan To Value
* @param totalCollateralInETH The total collateral in ETH
* @param totalDebtInETH The total borrow balance
* @param ltv The average loan to value
* @return the amount available to borrow in ETH for the user
**/
function calculateAvailableBorrowsETH(
uint256 totalCollateralInETH,
uint256 totalDebtInETH,
uint256 ltv
) internal pure returns (uint256) {
uint256 availableBorrowsETH = totalCollateralInETH.percentMul(ltv);
if (availableBorrowsETH < totalDebtInETH) {
return 0;
}
availableBorrowsETH = availableBorrowsETH.sub(totalDebtInETH);
return availableBorrowsETH;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {SafeMath} from '../../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../../../dependencies/openzeppelin/contracts/IERC20.sol';
import {ReserveLogic} from './ReserveLogic.sol';
import {GenericLogic} from './GenericLogic.sol';
import {WadRayMath} from '../math/WadRayMath.sol';
import {PercentageMath} from '../math/PercentageMath.sol';
import {SafeERC20} from '../../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {ReserveConfiguration} from '../configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../configuration/UserConfiguration.sol';
import {Errors} from '../helpers/Errors.sol';
import {Helpers} from '../helpers/Helpers.sol';
import {IReserveInterestRateStrategy} from '../../../interfaces/IReserveInterestRateStrategy.sol';
import {DataTypes} from '../types/DataTypes.sol';
/**
* @title ReserveLogic library
* @author Aave
* @notice Implements functions to validate the different actions of the protocol
*/
library ValidationLogic {
using ReserveLogic for DataTypes.ReserveData;
using SafeMath for uint256;
using WadRayMath for uint256;
using PercentageMath for uint256;
using SafeERC20 for IERC20;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
using UserConfiguration for DataTypes.UserConfigurationMap;
uint256 public constant REBALANCE_UP_LIQUIDITY_RATE_THRESHOLD = 4000;
uint256 public constant REBALANCE_UP_USAGE_RATIO_THRESHOLD = 0.95 * 1e27; //usage ratio of 95%
/**
* @dev Validates a deposit action
* @param reserve The reserve object on which the user is depositing
* @param amount The amount to be deposited
*/
function validateDeposit(DataTypes.ReserveData storage reserve, uint256 amount) external view {
(bool isActive, bool isFrozen, , ) = reserve.configuration.getFlags();
require(amount != 0, Errors.VL_INVALID_AMOUNT);
require(isActive, Errors.VL_NO_ACTIVE_RESERVE);
require(!isFrozen, Errors.VL_RESERVE_FROZEN);
}
/**
* @dev Validates a withdraw action
* @param reserveAddress The address of the reserve
* @param amount The amount to be withdrawn
* @param userBalance The balance of the user
* @param reservesData The reserves state
* @param userConfig The user configuration
* @param reserves The addresses of the reserves
* @param reservesCount The number of reserves
* @param oracle The price oracle
*/
function validateWithdraw(
address reserveAddress,
uint256 amount,
uint256 userBalance,
mapping(address => DataTypes.ReserveData) storage reservesData,
DataTypes.UserConfigurationMap storage userConfig,
mapping(uint256 => address) storage reserves,
uint256 reservesCount,
address oracle
) external view {
require(amount != 0, Errors.VL_INVALID_AMOUNT);
require(amount <= userBalance, Errors.VL_NOT_ENOUGH_AVAILABLE_USER_BALANCE);
(bool isActive, , , ) = reservesData[reserveAddress].configuration.getFlags();
require(isActive, Errors.VL_NO_ACTIVE_RESERVE);
require(
GenericLogic.balanceDecreaseAllowed(
reserveAddress,
msg.sender,
amount,
reservesData,
userConfig,
reserves,
reservesCount,
oracle
),
Errors.VL_TRANSFER_NOT_ALLOWED
);
}
struct ValidateBorrowLocalVars {
uint256 currentLtv;
uint256 currentLiquidationThreshold;
uint256 amountOfCollateralNeededETH;
uint256 userCollateralBalanceETH;
uint256 userBorrowBalanceETH;
uint256 availableLiquidity;
uint256 healthFactor;
bool isActive;
bool isFrozen;
bool borrowingEnabled;
bool stableRateBorrowingEnabled;
}
/**
* @dev Validates a borrow action
* @param asset The address of the asset to borrow
* @param reserve The reserve state from which the user is borrowing
* @param userAddress The address of the user
* @param amount The amount to be borrowed
* @param amountInETH The amount to be borrowed, in ETH
* @param interestRateMode The interest rate mode at which the user is borrowing
* @param maxStableLoanPercent The max amount of the liquidity that can be borrowed at stable rate, in percentage
* @param reservesData The state of all the reserves
* @param userConfig The state of the user for the specific reserve
* @param reserves The addresses of all the active reserves
* @param oracle The price oracle
*/
function validateBorrow(
address asset,
DataTypes.ReserveData storage reserve,
address userAddress,
uint256 amount,
uint256 amountInETH,
uint256 interestRateMode,
uint256 maxStableLoanPercent,
mapping(address => DataTypes.ReserveData) storage reservesData,
DataTypes.UserConfigurationMap storage userConfig,
mapping(uint256 => address) storage reserves,
uint256 reservesCount,
address oracle
) external view {
ValidateBorrowLocalVars memory vars;
(vars.isActive, vars.isFrozen, vars.borrowingEnabled, vars.stableRateBorrowingEnabled) = reserve
.configuration
.getFlags();
require(vars.isActive, Errors.VL_NO_ACTIVE_RESERVE);
require(!vars.isFrozen, Errors.VL_RESERVE_FROZEN);
require(amount != 0, Errors.VL_INVALID_AMOUNT);
require(vars.borrowingEnabled, Errors.VL_BORROWING_NOT_ENABLED);
//validate interest rate mode
require(
uint256(DataTypes.InterestRateMode.VARIABLE) == interestRateMode ||
uint256(DataTypes.InterestRateMode.STABLE) == interestRateMode,
Errors.VL_INVALID_INTEREST_RATE_MODE_SELECTED
);
(
vars.userCollateralBalanceETH,
vars.userBorrowBalanceETH,
vars.currentLtv,
vars.currentLiquidationThreshold,
vars.healthFactor
) = GenericLogic.calculateUserAccountData(
userAddress,
reservesData,
userConfig,
reserves,
reservesCount,
oracle
);
require(vars.userCollateralBalanceETH > 0, Errors.VL_COLLATERAL_BALANCE_IS_0);
require(
vars.healthFactor > GenericLogic.HEALTH_FACTOR_LIQUIDATION_THRESHOLD,
Errors.VL_HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD
);
//add the current already borrowed amount to the amount requested to calculate the total collateral needed.
vars.amountOfCollateralNeededETH = vars.userBorrowBalanceETH.add(amountInETH).percentDiv(
vars.currentLtv
); //LTV is calculated in percentage
require(
vars.amountOfCollateralNeededETH <= vars.userCollateralBalanceETH,
Errors.VL_COLLATERAL_CANNOT_COVER_NEW_BORROW
);
/**
* Following conditions need to be met if the user is borrowing at a stable rate:
* 1. Reserve must be enabled for stable rate borrowing
* 2. Users cannot borrow from the reserve if their collateral is (mostly) the same currency
* they are borrowing, to prevent abuses.
* 3. Users will be able to borrow only a portion of the total available liquidity
**/
if (interestRateMode == uint256(DataTypes.InterestRateMode.STABLE)) {
//check if the borrow mode is stable and if stable rate borrowing is enabled on this reserve
require(vars.stableRateBorrowingEnabled, Errors.VL_STABLE_BORROWING_NOT_ENABLED);
require(
!userConfig.isUsingAsCollateral(reserve.id) ||
reserve.configuration.getLtv() == 0 ||
amount > IERC20(reserve.aTokenAddress).balanceOf(userAddress),
Errors.VL_COLLATERAL_SAME_AS_BORROWING_CURRENCY
);
vars.availableLiquidity = IERC20(asset).balanceOf(reserve.aTokenAddress);
//calculate the max available loan size in stable rate mode as a percentage of the
//available liquidity
uint256 maxLoanSizeStable = vars.availableLiquidity.percentMul(maxStableLoanPercent);
require(amount <= maxLoanSizeStable, Errors.VL_AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE);
}
}
/**
* @dev Validates a repay action
* @param reserve The reserve state from which the user is repaying
* @param amountSent The amount sent for the repayment. Can be an actual value or uint(-1)
* @param onBehalfOf The address of the user msg.sender is repaying for
* @param stableDebt The borrow balance of the user
* @param variableDebt The borrow balance of the user
*/
function validateRepay(
DataTypes.ReserveData storage reserve,
uint256 amountSent,
DataTypes.InterestRateMode rateMode,
address onBehalfOf,
uint256 stableDebt,
uint256 variableDebt
) external view {
bool isActive = reserve.configuration.getActive();
require(isActive, Errors.VL_NO_ACTIVE_RESERVE);
require(amountSent > 0, Errors.VL_INVALID_AMOUNT);
require(
(stableDebt > 0 &&
DataTypes.InterestRateMode(rateMode) == DataTypes.InterestRateMode.STABLE) ||
(variableDebt > 0 &&
DataTypes.InterestRateMode(rateMode) == DataTypes.InterestRateMode.VARIABLE),
Errors.VL_NO_DEBT_OF_SELECTED_TYPE
);
require(
amountSent != uint256(-1) || msg.sender == onBehalfOf,
Errors.VL_NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF
);
}
/**
* @dev Validates a swap of borrow rate mode.
* @param reserve The reserve state on which the user is swapping the rate
* @param userConfig The user reserves configuration
* @param stableDebt The stable debt of the user
* @param variableDebt The variable debt of the user
* @param currentRateMode The rate mode of the borrow
*/
function validateSwapRateMode(
DataTypes.ReserveData storage reserve,
DataTypes.UserConfigurationMap storage userConfig,
uint256 stableDebt,
uint256 variableDebt,
DataTypes.InterestRateMode currentRateMode
) external view {
(bool isActive, bool isFrozen, , bool stableRateEnabled) = reserve.configuration.getFlags();
require(isActive, Errors.VL_NO_ACTIVE_RESERVE);
require(!isFrozen, Errors.VL_RESERVE_FROZEN);
if (currentRateMode == DataTypes.InterestRateMode.STABLE) {
require(stableDebt > 0, Errors.VL_NO_STABLE_RATE_LOAN_IN_RESERVE);
} else if (currentRateMode == DataTypes.InterestRateMode.VARIABLE) {
require(variableDebt > 0, Errors.VL_NO_VARIABLE_RATE_LOAN_IN_RESERVE);
/**
* user wants to swap to stable, before swapping we need to ensure that
* 1. stable borrow rate is enabled on the reserve
* 2. user is not trying to abuse the reserve by depositing
* more collateral than he is borrowing, artificially lowering
* the interest rate, borrowing at variable, and switching to stable
**/
require(stableRateEnabled, Errors.VL_STABLE_BORROWING_NOT_ENABLED);
require(
!userConfig.isUsingAsCollateral(reserve.id) ||
reserve.configuration.getLtv() == 0 ||
stableDebt.add(variableDebt) > IERC20(reserve.aTokenAddress).balanceOf(msg.sender),
Errors.VL_COLLATERAL_SAME_AS_BORROWING_CURRENCY
);
} else {
revert(Errors.VL_INVALID_INTEREST_RATE_MODE_SELECTED);
}
}
/**
* @dev Validates a stable borrow rate rebalance action
* @param reserve The reserve state on which the user is getting rebalanced
* @param reserveAddress The address of the reserve
* @param stableDebtToken The stable debt token instance
* @param variableDebtToken The variable debt token instance
* @param aTokenAddress The address of the aToken contract
*/
function validateRebalanceStableBorrowRate(
DataTypes.ReserveData storage reserve,
address reserveAddress,
IERC20 stableDebtToken,
IERC20 variableDebtToken,
address aTokenAddress
) external view {
(bool isActive, , , ) = reserve.configuration.getFlags();
require(isActive, Errors.VL_NO_ACTIVE_RESERVE);
//if the usage ratio is below 95%, no rebalances are needed
uint256 totalDebt =
stableDebtToken.totalSupply().add(variableDebtToken.totalSupply()).wadToRay();
uint256 availableLiquidity = IERC20(reserveAddress).balanceOf(aTokenAddress).wadToRay();
uint256 usageRatio = totalDebt == 0 ? 0 : totalDebt.rayDiv(availableLiquidity.add(totalDebt));
//if the liquidity rate is below REBALANCE_UP_THRESHOLD of the max variable APR at 95% usage,
//then we allow rebalancing of the stable rate positions.
uint256 currentLiquidityRate = reserve.currentLiquidityRate;
uint256 maxVariableBorrowRate =
IReserveInterestRateStrategy(reserve.interestRateStrategyAddress).getMaxVariableBorrowRate();
require(
usageRatio >= REBALANCE_UP_USAGE_RATIO_THRESHOLD &&
currentLiquidityRate <=
maxVariableBorrowRate.percentMul(REBALANCE_UP_LIQUIDITY_RATE_THRESHOLD),
Errors.LP_INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET
);
}
/**
* @dev Validates the action of setting an asset as collateral
* @param reserve The state of the reserve that the user is enabling or disabling as collateral
* @param reserveAddress The address of the reserve
* @param reservesData The data of all the reserves
* @param userConfig The state of the user for the specific reserve
* @param reserves The addresses of all the active reserves
* @param oracle The price oracle
*/
function validateSetUseReserveAsCollateral(
DataTypes.ReserveData storage reserve,
address reserveAddress,
bool useAsCollateral,
mapping(address => DataTypes.ReserveData) storage reservesData,
DataTypes.UserConfigurationMap storage userConfig,
mapping(uint256 => address) storage reserves,
uint256 reservesCount,
address oracle
) external view {
uint256 underlyingBalance = IERC20(reserve.aTokenAddress).balanceOf(msg.sender);
require(underlyingBalance > 0, Errors.VL_UNDERLYING_BALANCE_NOT_GREATER_THAN_0);
require(
useAsCollateral ||
GenericLogic.balanceDecreaseAllowed(
reserveAddress,
msg.sender,
underlyingBalance,
reservesData,
userConfig,
reserves,
reservesCount,
oracle
),
Errors.VL_DEPOSIT_ALREADY_IN_USE
);
}
/**
* @dev Validates a flashloan action
* @param assets The assets being flashborrowed
* @param amounts The amounts for each asset being borrowed
**/
function validateFlashloan(address[] memory assets, uint256[] memory amounts) internal pure {
require(assets.length == amounts.length, Errors.VL_INCONSISTENT_FLASHLOAN_PARAMS);
}
/**
* @dev Validates the liquidation action
* @param collateralReserve The reserve data of the collateral
* @param principalReserve The reserve data of the principal
* @param userConfig The user configuration
* @param userHealthFactor The user's health factor
* @param userStableDebt Total stable debt balance of the user
* @param userVariableDebt Total variable debt balance of the user
**/
function validateLiquidationCall(
DataTypes.ReserveData storage collateralReserve,
DataTypes.ReserveData storage principalReserve,
DataTypes.UserConfigurationMap storage userConfig,
uint256 userHealthFactor,
uint256 userStableDebt,
uint256 userVariableDebt
) internal view returns (uint256, string memory) {
if (
!collateralReserve.configuration.getActive() || !principalReserve.configuration.getActive()
) {
return (
uint256(Errors.CollateralManagerErrors.NO_ACTIVE_RESERVE),
Errors.VL_NO_ACTIVE_RESERVE
);
}
if (userHealthFactor >= GenericLogic.HEALTH_FACTOR_LIQUIDATION_THRESHOLD) {
return (
uint256(Errors.CollateralManagerErrors.HEALTH_FACTOR_ABOVE_THRESHOLD),
Errors.LPCM_HEALTH_FACTOR_NOT_BELOW_THRESHOLD
);
}
bool isCollateralEnabled =
collateralReserve.configuration.getLiquidationThreshold() > 0 &&
userConfig.isUsingAsCollateral(collateralReserve.id);
//if collateral isn't enabled as collateral by user, it cannot be liquidated
if (!isCollateralEnabled) {
return (
uint256(Errors.CollateralManagerErrors.COLLATERAL_CANNOT_BE_LIQUIDATED),
Errors.LPCM_COLLATERAL_CANNOT_BE_LIQUIDATED
);
}
if (userStableDebt == 0 && userVariableDebt == 0) {
return (
uint256(Errors.CollateralManagerErrors.CURRRENCY_NOT_BORROWED),
Errors.LPCM_SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER
);
}
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.LPCM_NO_ERRORS);
}
/**
* @dev Validates an aToken transfer
* @param from The user from which the aTokens are being transferred
* @param reservesData The state of all the reserves
* @param userConfig The state of the user for the specific reserve
* @param reserves The addresses of all the active reserves
* @param oracle The price oracle
*/
function validateTransfer(
address from,
mapping(address => DataTypes.ReserveData) storage reservesData,
DataTypes.UserConfigurationMap storage userConfig,
mapping(uint256 => address) storage reserves,
uint256 reservesCount,
address oracle
) internal view {
(, , , , uint256 healthFactor) =
GenericLogic.calculateUserAccountData(
from,
reservesData,
userConfig,
reserves,
reservesCount,
oracle
);
require(
healthFactor >= GenericLogic.HEALTH_FACTOR_LIQUIDATION_THRESHOLD,
Errors.VL_TRANSFER_NOT_ALLOWED
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Errors} from '../helpers/Errors.sol';
import {DataTypes} from '../types/DataTypes.sol';
/**
* @title ReserveConfiguration library
* @author Aave
* @notice Implements the bitmap logic to handle the reserve configuration
*/
library ReserveConfiguration {
uint256 constant LTV_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000; // prettier-ignore
uint256 constant LIQUIDATION_THRESHOLD_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFF; // prettier-ignore
uint256 constant LIQUIDATION_BONUS_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFF; // prettier-ignore
uint256 constant DECIMALS_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FFFFFFFFFFFF; // prettier-ignore
uint256 constant ACTIVE_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFF; // prettier-ignore
uint256 constant FROZEN_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDFFFFFFFFFFFFFF; // prettier-ignore
uint256 constant BORROWING_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBFFFFFFFFFFFFFF; // prettier-ignore
uint256 constant STABLE_BORROWING_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFFFFF; // prettier-ignore
uint256 constant RESERVE_FACTOR_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFFFFFFFFFF; // prettier-ignore
/// @dev For the LTV, the start bit is 0 (up to 15), hence no bitshifting is needed
uint256 constant LIQUIDATION_THRESHOLD_START_BIT_POSITION = 16;
uint256 constant LIQUIDATION_BONUS_START_BIT_POSITION = 32;
uint256 constant RESERVE_DECIMALS_START_BIT_POSITION = 48;
uint256 constant IS_ACTIVE_START_BIT_POSITION = 56;
uint256 constant IS_FROZEN_START_BIT_POSITION = 57;
uint256 constant BORROWING_ENABLED_START_BIT_POSITION = 58;
uint256 constant STABLE_BORROWING_ENABLED_START_BIT_POSITION = 59;
uint256 constant RESERVE_FACTOR_START_BIT_POSITION = 64;
uint256 constant MAX_VALID_LTV = 65535;
uint256 constant MAX_VALID_LIQUIDATION_THRESHOLD = 65535;
uint256 constant MAX_VALID_LIQUIDATION_BONUS = 65535;
uint256 constant MAX_VALID_DECIMALS = 255;
uint256 constant MAX_VALID_RESERVE_FACTOR = 65535;
/**
* @dev Sets the Loan to Value of the reserve
* @param self The reserve configuration
* @param ltv the new ltv
**/
function setLtv(DataTypes.ReserveConfigurationMap memory self, uint256 ltv) internal pure {
require(ltv <= MAX_VALID_LTV, Errors.RC_INVALID_LTV);
self.data = (self.data & LTV_MASK) | ltv;
}
/**
* @dev Gets the Loan to Value of the reserve
* @param self The reserve configuration
* @return The loan to value
**/
function getLtv(DataTypes.ReserveConfigurationMap storage self) internal view returns (uint256) {
return self.data & ~LTV_MASK;
}
/**
* @dev Sets the liquidation threshold of the reserve
* @param self The reserve configuration
* @param threshold The new liquidation threshold
**/
function setLiquidationThreshold(DataTypes.ReserveConfigurationMap memory self, uint256 threshold)
internal
pure
{
require(threshold <= MAX_VALID_LIQUIDATION_THRESHOLD, Errors.RC_INVALID_LIQ_THRESHOLD);
self.data =
(self.data & LIQUIDATION_THRESHOLD_MASK) |
(threshold << LIQUIDATION_THRESHOLD_START_BIT_POSITION);
}
/**
* @dev Gets the liquidation threshold of the reserve
* @param self The reserve configuration
* @return The liquidation threshold
**/
function getLiquidationThreshold(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (uint256)
{
return (self.data & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION;
}
/**
* @dev Sets the liquidation bonus of the reserve
* @param self The reserve configuration
* @param bonus The new liquidation bonus
**/
function setLiquidationBonus(DataTypes.ReserveConfigurationMap memory self, uint256 bonus)
internal
pure
{
require(bonus <= MAX_VALID_LIQUIDATION_BONUS, Errors.RC_INVALID_LIQ_BONUS);
self.data =
(self.data & LIQUIDATION_BONUS_MASK) |
(bonus << LIQUIDATION_BONUS_START_BIT_POSITION);
}
/**
* @dev Gets the liquidation bonus of the reserve
* @param self The reserve configuration
* @return The liquidation bonus
**/
function getLiquidationBonus(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (uint256)
{
return (self.data & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION;
}
/**
* @dev Sets the decimals of the underlying asset of the reserve
* @param self The reserve configuration
* @param decimals The decimals
**/
function setDecimals(DataTypes.ReserveConfigurationMap memory self, uint256 decimals)
internal
pure
{
require(decimals <= MAX_VALID_DECIMALS, Errors.RC_INVALID_DECIMALS);
self.data = (self.data & DECIMALS_MASK) | (decimals << RESERVE_DECIMALS_START_BIT_POSITION);
}
/**
* @dev Gets the decimals of the underlying asset of the reserve
* @param self The reserve configuration
* @return The decimals of the asset
**/
function getDecimals(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (uint256)
{
return (self.data & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION;
}
/**
* @dev Sets the active state of the reserve
* @param self The reserve configuration
* @param active The active state
**/
function setActive(DataTypes.ReserveConfigurationMap memory self, bool active) internal pure {
self.data =
(self.data & ACTIVE_MASK) |
(uint256(active ? 1 : 0) << IS_ACTIVE_START_BIT_POSITION);
}
/**
* @dev Gets the active state of the reserve
* @param self The reserve configuration
* @return The active state
**/
function getActive(DataTypes.ReserveConfigurationMap storage self) internal view returns (bool) {
return (self.data & ~ACTIVE_MASK) != 0;
}
/**
* @dev Sets the frozen state of the reserve
* @param self The reserve configuration
* @param frozen The frozen state
**/
function setFrozen(DataTypes.ReserveConfigurationMap memory self, bool frozen) internal pure {
self.data =
(self.data & FROZEN_MASK) |
(uint256(frozen ? 1 : 0) << IS_FROZEN_START_BIT_POSITION);
}
/**
* @dev Gets the frozen state of the reserve
* @param self The reserve configuration
* @return The frozen state
**/
function getFrozen(DataTypes.ReserveConfigurationMap storage self) internal view returns (bool) {
return (self.data & ~FROZEN_MASK) != 0;
}
/**
* @dev Enables or disables borrowing on the reserve
* @param self The reserve configuration
* @param enabled True if the borrowing needs to be enabled, false otherwise
**/
function setBorrowingEnabled(DataTypes.ReserveConfigurationMap memory self, bool enabled)
internal
pure
{
self.data =
(self.data & BORROWING_MASK) |
(uint256(enabled ? 1 : 0) << BORROWING_ENABLED_START_BIT_POSITION);
}
/**
* @dev Gets the borrowing state of the reserve
* @param self The reserve configuration
* @return The borrowing state
**/
function getBorrowingEnabled(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (bool)
{
return (self.data & ~BORROWING_MASK) != 0;
}
/**
* @dev Enables or disables stable rate borrowing on the reserve
* @param self The reserve configuration
* @param enabled True if the stable rate borrowing needs to be enabled, false otherwise
**/
function setStableRateBorrowingEnabled(
DataTypes.ReserveConfigurationMap memory self,
bool enabled
) internal pure {
self.data =
(self.data & STABLE_BORROWING_MASK) |
(uint256(enabled ? 1 : 0) << STABLE_BORROWING_ENABLED_START_BIT_POSITION);
}
/**
* @dev Gets the stable rate borrowing state of the reserve
* @param self The reserve configuration
* @return The stable rate borrowing state
**/
function getStableRateBorrowingEnabled(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (bool)
{
return (self.data & ~STABLE_BORROWING_MASK) != 0;
}
/**
* @dev Sets the reserve factor of the reserve
* @param self The reserve configuration
* @param reserveFactor The reserve factor
**/
function setReserveFactor(DataTypes.ReserveConfigurationMap memory self, uint256 reserveFactor)
internal
pure
{
require(reserveFactor <= MAX_VALID_RESERVE_FACTOR, Errors.RC_INVALID_RESERVE_FACTOR);
self.data =
(self.data & RESERVE_FACTOR_MASK) |
(reserveFactor << RESERVE_FACTOR_START_BIT_POSITION);
}
/**
* @dev Gets the reserve factor of the reserve
* @param self The reserve configuration
* @return The reserve factor
**/
function getReserveFactor(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (uint256)
{
return (self.data & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION;
}
/**
* @dev Gets the configuration flags of the reserve
* @param self The reserve configuration
* @return The state flags representing active, frozen, borrowing enabled, stableRateBorrowing enabled
**/
function getFlags(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (
bool,
bool,
bool,
bool
)
{
uint256 dataLocal = self.data;
return (
(dataLocal & ~ACTIVE_MASK) != 0,
(dataLocal & ~FROZEN_MASK) != 0,
(dataLocal & ~BORROWING_MASK) != 0,
(dataLocal & ~STABLE_BORROWING_MASK) != 0
);
}
/**
* @dev Gets the configuration paramters of the reserve
* @param self The reserve configuration
* @return The state params representing ltv, liquidation threshold, liquidation bonus, the reserve decimals
**/
function getParams(DataTypes.ReserveConfigurationMap storage self)
internal
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256
)
{
uint256 dataLocal = self.data;
return (
dataLocal & ~LTV_MASK,
(dataLocal & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION,
(dataLocal & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION,
(dataLocal & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION,
(dataLocal & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION
);
}
/**
* @dev Gets the configuration paramters of the reserve from a memory object
* @param self The reserve configuration
* @return The state params representing ltv, liquidation threshold, liquidation bonus, the reserve decimals
**/
function getParamsMemory(DataTypes.ReserveConfigurationMap memory self)
internal
pure
returns (
uint256,
uint256,
uint256,
uint256,
uint256
)
{
return (
self.data & ~LTV_MASK,
(self.data & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION,
(self.data & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION,
(self.data & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION,
(self.data & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION
);
}
/**
* @dev Gets the configuration flags of the reserve from a memory object
* @param self The reserve configuration
* @return The state flags representing active, frozen, borrowing enabled, stableRateBorrowing enabled
**/
function getFlagsMemory(DataTypes.ReserveConfigurationMap memory self)
internal
pure
returns (
bool,
bool,
bool,
bool
)
{
return (
(self.data & ~ACTIVE_MASK) != 0,
(self.data & ~FROZEN_MASK) != 0,
(self.data & ~BORROWING_MASK) != 0,
(self.data & ~STABLE_BORROWING_MASK) != 0
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Errors} from '../helpers/Errors.sol';
import {DataTypes} from '../types/DataTypes.sol';
/**
* @title UserConfiguration library
* @author Aave
* @notice Implements the bitmap logic to handle the user configuration
*/
library UserConfiguration {
uint256 internal constant BORROWING_MASK =
0x5555555555555555555555555555555555555555555555555555555555555555;
/**
* @dev Sets if the user is borrowing the reserve identified by reserveIndex
* @param self The configuration object
* @param reserveIndex The index of the reserve in the bitmap
* @param borrowing True if the user is borrowing the reserve, false otherwise
**/
function setBorrowing(
DataTypes.UserConfigurationMap storage self,
uint256 reserveIndex,
bool borrowing
) internal {
require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
self.data =
(self.data & ~(1 << (reserveIndex * 2))) |
(uint256(borrowing ? 1 : 0) << (reserveIndex * 2));
}
/**
* @dev Sets if the user is using as collateral the reserve identified by reserveIndex
* @param self The configuration object
* @param reserveIndex The index of the reserve in the bitmap
* @param usingAsCollateral True if the user is usin the reserve as collateral, false otherwise
**/
function setUsingAsCollateral(
DataTypes.UserConfigurationMap storage self,
uint256 reserveIndex,
bool usingAsCollateral
) internal {
require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
self.data =
(self.data & ~(1 << (reserveIndex * 2 + 1))) |
(uint256(usingAsCollateral ? 1 : 0) << (reserveIndex * 2 + 1));
}
/**
* @dev Used to validate if a user has been using the reserve for borrowing or as collateral
* @param self The configuration object
* @param reserveIndex The index of the reserve in the bitmap
* @return True if the user has been using a reserve for borrowing or as collateral, false otherwise
**/
function isUsingAsCollateralOrBorrowing(
DataTypes.UserConfigurationMap memory self,
uint256 reserveIndex
) internal pure returns (bool) {
require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
return (self.data >> (reserveIndex * 2)) & 3 != 0;
}
/**
* @dev Used to validate if a user has been using the reserve for borrowing
* @param self The configuration object
* @param reserveIndex The index of the reserve in the bitmap
* @return True if the user has been using a reserve for borrowing, false otherwise
**/
function isBorrowing(DataTypes.UserConfigurationMap memory self, uint256 reserveIndex)
internal
pure
returns (bool)
{
require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
return (self.data >> (reserveIndex * 2)) & 1 != 0;
}
/**
* @dev Used to validate if a user has been using the reserve as collateral
* @param self The configuration object
* @param reserveIndex The index of the reserve in the bitmap
* @return True if the user has been using a reserve as collateral, false otherwise
**/
function isUsingAsCollateral(DataTypes.UserConfigurationMap memory self, uint256 reserveIndex)
internal
pure
returns (bool)
{
require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
return (self.data >> (reserveIndex * 2 + 1)) & 1 != 0;
}
/**
* @dev Used to validate if a user has been borrowing from any reserve
* @param self The configuration object
* @return True if the user has been borrowing any reserve, false otherwise
**/
function isBorrowingAny(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) {
return self.data & BORROWING_MASK != 0;
}
/**
* @dev Used to validate if a user has not been using any reserve
* @param self The configuration object
* @return True if the user has been borrowing any reserve, false otherwise
**/
function isEmpty(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) {
return self.data == 0;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {UserConfiguration} from '../libraries/configuration/UserConfiguration.sol';
import {ReserveConfiguration} from '../libraries/configuration/ReserveConfiguration.sol';
import {ReserveLogic} from '../libraries/logic/ReserveLogic.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {DataTypes} from '../libraries/types/DataTypes.sol';
contract LendingPoolStorage {
using ReserveLogic for DataTypes.ReserveData;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
using UserConfiguration for DataTypes.UserConfigurationMap;
ILendingPoolAddressesProvider internal _addressesProvider;
mapping(address => DataTypes.ReserveData) internal _reserves;
mapping(address => DataTypes.UserConfigurationMap) internal _usersConfig;
// the list of the available reserves, structured as a mapping for gas savings reasons
mapping(uint256 => address) internal _reservesList;
uint256 internal _reservesCount;
bool internal _paused;
uint256 internal _maxStableRateBorrowSizePercent;
uint256 internal _flashLoanPremiumTotal;
uint256 internal _maxNumberOfReserves;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title IReserveInterestRateStrategyInterface interface
* @dev Interface for the calculation of the interest rates
* @author Aave
*/
interface IReserveInterestRateStrategy {
function baseVariableBorrowRate() external view returns (uint256);
function getMaxVariableBorrowRate() external view returns (uint256);
function calculateInterestRates(
address reserve,
uint256 availableLiquidity,
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 averageStableBorrowRate,
uint256 reserveFactor
)
external
view
returns (
uint256,
uint256,
uint256
);
function calculateInterestRates(
address reserve,
address aToken,
uint256 liquidityAdded,
uint256 liquidityTaken,
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 averageStableBorrowRate,
uint256 reserveFactor
)
external
view
returns (
uint256 liquidityRate,
uint256 stableBorrowRate,
uint256 variableBorrowRate
);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {SafeMath} from '../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
import {FlashLoanReceiverBase} from '../../flashloan/base/FlashLoanReceiverBase.sol';
import {MintableERC20} from '../tokens/MintableERC20.sol';
import {SafeERC20} from '../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
contract MockFlashLoanReceiver is FlashLoanReceiverBase {
using SafeERC20 for IERC20;
ILendingPoolAddressesProvider internal _provider;
event ExecutedWithFail(address[] _assets, uint256[] _amounts, uint256[] _premiums);
event ExecutedWithSuccess(address[] _assets, uint256[] _amounts, uint256[] _premiums);
bool _failExecution;
uint256 _amountToApprove;
bool _simulateEOA;
constructor(ILendingPoolAddressesProvider provider) public FlashLoanReceiverBase(provider) {}
function setFailExecutionTransfer(bool fail) public {
_failExecution = fail;
}
function setAmountToApprove(uint256 amountToApprove) public {
_amountToApprove = amountToApprove;
}
function setSimulateEOA(bool flag) public {
_simulateEOA = flag;
}
function amountToApprove() public view returns (uint256) {
return _amountToApprove;
}
function simulateEOA() public view returns (bool) {
return _simulateEOA;
}
function executeOperation(
address[] memory assets,
uint256[] memory amounts,
uint256[] memory premiums,
address initiator,
bytes memory params
) public override returns (bool) {
params;
initiator;
if (_failExecution) {
emit ExecutedWithFail(assets, amounts, premiums);
return !_simulateEOA;
}
for (uint256 i = 0; i < assets.length; i++) {
//mint to this contract the specific amount
MintableERC20 token = MintableERC20(assets[i]);
//check the contract has the specified balance
require(
amounts[i] <= IERC20(assets[i]).balanceOf(address(this)),
'Invalid balance for the contract'
);
uint256 amountToReturn =
(_amountToApprove != 0) ? _amountToApprove : amounts[i].add(premiums[i]);
//execution does not fail - mint tokens and return them to the _destination
token.mint(premiums[i]);
IERC20(assets[i]).approve(address(LENDING_POOL), amountToReturn);
}
emit ExecutedWithSuccess(assets, amounts, premiums);
return true;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {SafeMath} from '../../dependencies/openzeppelin/contracts//SafeMath.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts//IERC20.sol';
import {IAToken} from '../../interfaces/IAToken.sol';
import {IStableDebtToken} from '../../interfaces/IStableDebtToken.sol';
import {IVariableDebtToken} from '../../interfaces/IVariableDebtToken.sol';
import {IPriceOracleGetter} from '../../interfaces/IPriceOracleGetter.sol';
import {ILendingPoolCollateralManager} from '../../interfaces/ILendingPoolCollateralManager.sol';
import {VersionedInitializable} from '../libraries/aave-upgradeability/VersionedInitializable.sol';
import {GenericLogic} from '../libraries/logic/GenericLogic.sol';
import {Helpers} from '../libraries/helpers/Helpers.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {PercentageMath} from '../libraries/math/PercentageMath.sol';
import {SafeERC20} from '../../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {ValidationLogic} from '../libraries/logic/ValidationLogic.sol';
import {DataTypes} from '../libraries/types/DataTypes.sol';
import {LendingPoolStorage} from './LendingPoolStorage.sol';
/**
* @title LendingPoolCollateralManager contract
* @author Aave
* @dev Implements actions involving management of collateral in the protocol, the main one being the liquidations
* IMPORTANT This contract will run always via DELEGATECALL, through the LendingPool, so the chain of inheritance
* is the same as the LendingPool, to have compatible storage layouts
**/
contract LendingPoolCollateralManager is
ILendingPoolCollateralManager,
VersionedInitializable,
LendingPoolStorage
{
using SafeERC20 for IERC20;
using SafeMath for uint256;
using WadRayMath for uint256;
using PercentageMath for uint256;
uint256 internal constant LIQUIDATION_CLOSE_FACTOR_PERCENT = 5000;
struct LiquidationCallLocalVars {
uint256 userCollateralBalance;
uint256 userStableDebt;
uint256 userVariableDebt;
uint256 maxLiquidatableDebt;
uint256 actualDebtToLiquidate;
uint256 liquidationRatio;
uint256 maxAmountCollateralToLiquidate;
uint256 userStableRate;
uint256 maxCollateralToLiquidate;
uint256 debtAmountNeeded;
uint256 healthFactor;
uint256 liquidatorPreviousATokenBalance;
IAToken collateralAtoken;
bool isCollateralEnabled;
DataTypes.InterestRateMode borrowRateMode;
uint256 errorCode;
string errorMsg;
}
/**
* @dev As thIS contract extends the VersionedInitializable contract to match the state
* of the LendingPool contract, the getRevision() function is needed, but the value is not
* important, as the initialize() function will never be called here
*/
function getRevision() internal pure override returns (uint256) {
return 0;
}
/**
* @dev Function to seize the collateral of a user. Only whitelisters of the user can call this function
* @param assets The addresses of the underlying assets to seize
* @param to The address that will receive the funds
**/
function seize(
address user,
address[] calldata assets,
address to
) external override returns (uint256, string memory) {
for (uint256 i = 0; i < assets.length; i++) {
address asset = assets[i];
DataTypes.ReserveData storage reserve = _reserves[asset];
IAToken aToken = IAToken(reserve.aTokenAddress);
uint256 userBalance = aToken.balanceOf(user);
reserve.updateState();
reserve.updateInterestRates(asset, address(aToken), 0, userBalance);
aToken.burn(user, to, userBalance, reserve.liquidityIndex);
emit Seized(user, to, asset, userBalance);
}
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.LPCM_NO_ERRORS);
}
/**
* @dev Function to liquidate a position if its Health Factor drops below 1
* - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param user The address of the borrower getting liquidated
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
* to receive the underlying collateral asset directly
**/
function liquidationCall(
address collateralAsset,
address debtAsset,
address user,
uint256 debtToCover,
bool receiveAToken
) external override returns (uint256, string memory) {
DataTypes.ReserveData storage collateralReserve = _reserves[collateralAsset];
DataTypes.ReserveData storage debtReserve = _reserves[debtAsset];
DataTypes.UserConfigurationMap storage userConfig = _usersConfig[user];
LiquidationCallLocalVars memory vars;
(, , , , vars.healthFactor) = GenericLogic.calculateUserAccountData(
user,
_reserves,
userConfig,
_reservesList,
_reservesCount,
_addressesProvider.getPriceOracle()
);
(vars.userStableDebt, vars.userVariableDebt) = Helpers.getUserCurrentDebt(user, debtReserve);
(vars.errorCode, vars.errorMsg) = ValidationLogic.validateLiquidationCall(
collateralReserve,
debtReserve,
userConfig,
vars.healthFactor,
vars.userStableDebt,
vars.userVariableDebt
);
if (Errors.CollateralManagerErrors(vars.errorCode) != Errors.CollateralManagerErrors.NO_ERROR) {
return (vars.errorCode, vars.errorMsg);
}
vars.collateralAtoken = IAToken(collateralReserve.aTokenAddress);
vars.userCollateralBalance = vars.collateralAtoken.balanceOf(user);
vars.maxLiquidatableDebt = vars.userStableDebt.add(vars.userVariableDebt).percentMul(
LIQUIDATION_CLOSE_FACTOR_PERCENT
);
vars.actualDebtToLiquidate = debtToCover > vars.maxLiquidatableDebt
? vars.maxLiquidatableDebt
: debtToCover;
(
vars.maxCollateralToLiquidate,
vars.debtAmountNeeded
) = _calculateAvailableCollateralToLiquidate(
collateralReserve,
debtReserve,
collateralAsset,
debtAsset,
vars.actualDebtToLiquidate,
vars.userCollateralBalance
);
// If debtAmountNeeded < actualDebtToLiquidate, there isn't enough
// collateral to cover the actual amount that is being liquidated, hence we liquidate
// a smaller amount
if (vars.debtAmountNeeded < vars.actualDebtToLiquidate) {
vars.actualDebtToLiquidate = vars.debtAmountNeeded;
}
// If the liquidator reclaims the underlying asset, we make sure there is enough available liquidity in the
// collateral reserve
if (!receiveAToken) {
uint256 currentAvailableCollateral =
IERC20(collateralAsset).balanceOf(address(vars.collateralAtoken));
if (currentAvailableCollateral < vars.maxCollateralToLiquidate) {
return (
uint256(Errors.CollateralManagerErrors.NOT_ENOUGH_LIQUIDITY),
Errors.LPCM_NOT_ENOUGH_LIQUIDITY_TO_LIQUIDATE
);
}
}
debtReserve.updateState();
if (vars.userVariableDebt >= vars.actualDebtToLiquidate) {
IVariableDebtToken(debtReserve.variableDebtTokenAddress).burn(
user,
vars.actualDebtToLiquidate,
debtReserve.variableBorrowIndex
);
} else {
// If the user doesn't have variable debt, no need to try to burn variable debt tokens
if (vars.userVariableDebt > 0) {
IVariableDebtToken(debtReserve.variableDebtTokenAddress).burn(
user,
vars.userVariableDebt,
debtReserve.variableBorrowIndex
);
}
IStableDebtToken(debtReserve.stableDebtTokenAddress).burn(
user,
vars.actualDebtToLiquidate.sub(vars.userVariableDebt)
);
}
debtReserve.updateInterestRates(
debtAsset,
debtReserve.aTokenAddress,
vars.actualDebtToLiquidate,
0
);
if (receiveAToken) {
vars.liquidatorPreviousATokenBalance = IERC20(vars.collateralAtoken).balanceOf(msg.sender);
vars.collateralAtoken.transferOnLiquidation(user, msg.sender, vars.maxCollateralToLiquidate);
if (vars.liquidatorPreviousATokenBalance == 0) {
DataTypes.UserConfigurationMap storage liquidatorConfig = _usersConfig[msg.sender];
liquidatorConfig.setUsingAsCollateral(collateralReserve.id, true);
emit ReserveUsedAsCollateralEnabled(collateralAsset, msg.sender);
}
} else {
collateralReserve.updateState();
collateralReserve.updateInterestRates(
collateralAsset,
address(vars.collateralAtoken),
0,
vars.maxCollateralToLiquidate
);
// Burn the equivalent amount of aToken, sending the underlying to the liquidator
vars.collateralAtoken.burn(
user,
msg.sender,
vars.maxCollateralToLiquidate,
collateralReserve.liquidityIndex
);
}
// If the collateral being liquidated is equal to the user balance,
// we set the currency as not being used as collateral anymore
if (vars.maxCollateralToLiquidate == vars.userCollateralBalance) {
userConfig.setUsingAsCollateral(collateralReserve.id, false);
emit ReserveUsedAsCollateralDisabled(collateralAsset, user);
}
// Transfers the debt asset being repaid to the aToken, where the liquidity is kept
IERC20(debtAsset).safeTransferFrom(
msg.sender,
debtReserve.aTokenAddress,
vars.actualDebtToLiquidate
);
emit LiquidationCall(
collateralAsset,
debtAsset,
user,
vars.actualDebtToLiquidate,
vars.maxCollateralToLiquidate,
msg.sender,
receiveAToken
);
return (uint256(Errors.CollateralManagerErrors.NO_ERROR), Errors.LPCM_NO_ERRORS);
}
struct AvailableCollateralToLiquidateLocalVars {
uint256 userCompoundedBorrowBalance;
uint256 liquidationBonus;
uint256 collateralPrice;
uint256 debtAssetPrice;
uint256 maxAmountCollateralToLiquidate;
uint256 debtAssetDecimals;
uint256 collateralDecimals;
}
/**
* @dev Calculates how much of a specific collateral can be liquidated, given
* a certain amount of debt asset.
* - This function needs to be called after all the checks to validate the liquidation have been performed,
* otherwise it might fail.
* @param collateralReserve The data of the collateral reserve
* @param debtReserve The data of the debt reserve
* @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
* @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
* @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
* @param userCollateralBalance The collateral balance for the specific `collateralAsset` of the user being liquidated
* @return collateralAmount: The maximum amount that is possible to liquidate given all the liquidation constraints
* (user balance, close factor)
* debtAmountNeeded: The amount to repay with the liquidation
**/
function _calculateAvailableCollateralToLiquidate(
DataTypes.ReserveData storage collateralReserve,
DataTypes.ReserveData storage debtReserve,
address collateralAsset,
address debtAsset,
uint256 debtToCover,
uint256 userCollateralBalance
) internal view returns (uint256, uint256) {
uint256 collateralAmount = 0;
uint256 debtAmountNeeded = 0;
IPriceOracleGetter oracle = IPriceOracleGetter(_addressesProvider.getPriceOracle());
AvailableCollateralToLiquidateLocalVars memory vars;
vars.collateralPrice = oracle.getAssetPrice(collateralAsset);
vars.debtAssetPrice = oracle.getAssetPrice(debtAsset);
(, , vars.liquidationBonus, vars.collateralDecimals, ) = collateralReserve
.configuration
.getParams();
vars.debtAssetDecimals = debtReserve.configuration.getDecimals();
// This is the maximum possible amount of the selected collateral that can be liquidated, given the
// max amount of liquidatable debt
vars.maxAmountCollateralToLiquidate = vars
.debtAssetPrice
.mul(debtToCover)
.mul(10**vars.collateralDecimals)
.percentMul(vars.liquidationBonus)
.div(vars.collateralPrice.mul(10**vars.debtAssetDecimals));
if (vars.maxAmountCollateralToLiquidate > userCollateralBalance) {
collateralAmount = userCollateralBalance;
debtAmountNeeded = vars
.collateralPrice
.mul(collateralAmount)
.mul(10**vars.debtAssetDecimals)
.div(vars.debtAssetPrice.mul(10**vars.collateralDecimals))
.percentDiv(vars.liquidationBonus);
} else {
collateralAmount = vars.maxAmountCollateralToLiquidate;
debtAmountNeeded = debtToCover;
}
return (collateralAmount, debtAmountNeeded);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title ILendingPoolCollateralManager
* @author Aave
* @notice Defines the actions involving management of collateral in the protocol.
**/
interface ILendingPoolCollateralManager {
/**
* @dev Emitted when a borrower is liquidated
* @param collateral The address of the collateral being liquidated
* @param principal The address of the reserve
* @param user The address of the user being liquidated
* @param debtToCover The total amount liquidated
* @param liquidatedCollateralAmount The amount of collateral being liquidated
* @param liquidator The address of the liquidator
* @param receiveAToken true if the liquidator wants to receive aTokens, false otherwise
**/
event LiquidationCall(
address indexed collateral,
address indexed principal,
address indexed user,
uint256 debtToCover,
uint256 liquidatedCollateralAmount,
address liquidator,
bool receiveAToken
);
/**
* @dev Emitted when the collateral of a user has been seized
* @param user The user whose collateral has been seized
* @param asset The addresse of the underlying asset to seize
* @param to The address that will receive the funds
* @param amount The amount seized
**/
event Seized(
address indexed user,
address indexed to,
address indexed asset,
uint256 amount
);
/**
* @dev Emitted when a reserve is disabled as collateral for an user
* @param reserve The address of the reserve
* @param user The address of the user
**/
event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user);
/**
* @dev Emitted when a reserve is enabled as collateral for an user
* @param reserve The address of the reserve
* @param user The address of the user
**/
event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user);
/**
* @dev Users can invoke this function to liquidate an undercollateralized position.
* @param collateral The address of the collateral to liquidated
* @param principal The address of the principal reserve
* @param user The address of the borrower
* @param debtToCover The amount of principal that the liquidator wants to repay
* @param receiveAToken true if the liquidators wants to receive the aTokens, false if
* he wants to receive the underlying asset directly
**/
function liquidationCall(
address collateral,
address principal,
address user,
uint256 debtToCover,
bool receiveAToken
) external returns (uint256, string memory);
/**
* @dev Function to seize the collateral of a user. Only whitelisters of the user can call this function
* @param user The user whose collateral has been seized
* @param assets The addresses of the underlying assets to seize
* @param to The address that will receive the funds
**/
function seize(
address user,
address[] calldata assets,
address to
) external returns (uint256, string memory);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {SafeMath} from '../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {IReserveInterestRateStrategy} from '../../interfaces/IReserveInterestRateStrategy.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {PercentageMath} from '../libraries/math/PercentageMath.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {ILendingRateOracle} from '../../interfaces/ILendingRateOracle.sol';
import {IERC20} from '../../dependencies/openzeppelin/contracts/IERC20.sol';
/**
* @title DefaultReserveInterestRateStrategy contract
* @notice Implements the calculation of the interest rates depending on the reserve state
* @dev The model of interest rate is based on 2 slopes, one before the `OPTIMAL_UTILIZATION_RATE`
* point of utilization and another from that one to 100%
* - An instance of this same contract, can't be used across different Aave markets, due to the caching
* of the LendingPoolAddressesProvider
* @author Aave
**/
contract DefaultReserveInterestRateStrategy is IReserveInterestRateStrategy {
using WadRayMath for uint256;
using SafeMath for uint256;
using PercentageMath for uint256;
/**
* @dev this constant represents the utilization rate at which the pool aims to obtain most competitive borrow rates.
* Expressed in ray
**/
uint256 public immutable OPTIMAL_UTILIZATION_RATE;
/**
* @dev This constant represents the excess utilization rate above the optimal. It's always equal to
* 1-optimal utilization rate. Added as a constant here for gas optimizations.
* Expressed in ray
**/
uint256 public immutable EXCESS_UTILIZATION_RATE;
ILendingPoolAddressesProvider public immutable addressesProvider;
// Base variable borrow rate when Utilization rate = 0. Expressed in ray
uint256 internal immutable _baseVariableBorrowRate;
// Slope of the variable interest curve when utilization rate > 0 and <= OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal immutable _variableRateSlope1;
// Slope of the variable interest curve when utilization rate > OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal immutable _variableRateSlope2;
// Slope of the stable interest curve when utilization rate > 0 and <= OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal immutable _stableRateSlope1;
// Slope of the stable interest curve when utilization rate > OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal immutable _stableRateSlope2;
constructor(
ILendingPoolAddressesProvider provider,
uint256 optimalUtilizationRate,
uint256 baseVariableBorrowRate,
uint256 variableRateSlope1,
uint256 variableRateSlope2,
uint256 stableRateSlope1,
uint256 stableRateSlope2
) public {
OPTIMAL_UTILIZATION_RATE = optimalUtilizationRate;
EXCESS_UTILIZATION_RATE = WadRayMath.ray().sub(optimalUtilizationRate);
addressesProvider = provider;
_baseVariableBorrowRate = baseVariableBorrowRate;
_variableRateSlope1 = variableRateSlope1;
_variableRateSlope2 = variableRateSlope2;
_stableRateSlope1 = stableRateSlope1;
_stableRateSlope2 = stableRateSlope2;
}
function variableRateSlope1() external view returns (uint256) {
return _variableRateSlope1;
}
function variableRateSlope2() external view returns (uint256) {
return _variableRateSlope2;
}
function stableRateSlope1() external view returns (uint256) {
return _stableRateSlope1;
}
function stableRateSlope2() external view returns (uint256) {
return _stableRateSlope2;
}
function baseVariableBorrowRate() external view override returns (uint256) {
return _baseVariableBorrowRate;
}
function getMaxVariableBorrowRate() external view override returns (uint256) {
return _baseVariableBorrowRate.add(_variableRateSlope1).add(_variableRateSlope2);
}
/**
* @dev Calculates the interest rates depending on the reserve's state and configurations
* @param reserve The address of the reserve
* @param liquidityAdded The liquidity added during the operation
* @param liquidityTaken The liquidity taken during the operation
* @param totalStableDebt The total borrowed from the reserve a stable rate
* @param totalVariableDebt The total borrowed from the reserve at a variable rate
* @param averageStableBorrowRate The weighted average of all the stable rate loans
* @param reserveFactor The reserve portion of the interest that goes to the treasury of the market
* @return The liquidity rate, the stable borrow rate and the variable borrow rate
**/
function calculateInterestRates(
address reserve,
address aToken,
uint256 liquidityAdded,
uint256 liquidityTaken,
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 averageStableBorrowRate,
uint256 reserveFactor
)
external
view
override
returns (
uint256,
uint256,
uint256
)
{
uint256 availableLiquidity = IERC20(reserve).balanceOf(aToken);
//avoid stack too deep
availableLiquidity = availableLiquidity.add(liquidityAdded).sub(liquidityTaken);
return
calculateInterestRates(
reserve,
availableLiquidity,
totalStableDebt,
totalVariableDebt,
averageStableBorrowRate,
reserveFactor
);
}
struct CalcInterestRatesLocalVars {
uint256 totalDebt;
uint256 currentVariableBorrowRate;
uint256 currentStableBorrowRate;
uint256 currentLiquidityRate;
uint256 utilizationRate;
}
/**
* @dev Calculates the interest rates depending on the reserve's state and configurations.
* NOTE This function is kept for compatibility with the previous DefaultInterestRateStrategy interface.
* New protocol implementation uses the new calculateInterestRates() interface
* @param reserve The address of the reserve
* @param availableLiquidity The liquidity available in the corresponding aToken
* @param totalStableDebt The total borrowed from the reserve a stable rate
* @param totalVariableDebt The total borrowed from the reserve at a variable rate
* @param averageStableBorrowRate The weighted average of all the stable rate loans
* @param reserveFactor The reserve portion of the interest that goes to the treasury of the market
* @return The liquidity rate, the stable borrow rate and the variable borrow rate
**/
function calculateInterestRates(
address reserve,
uint256 availableLiquidity,
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 averageStableBorrowRate,
uint256 reserveFactor
)
public
view
override
returns (
uint256,
uint256,
uint256
)
{
CalcInterestRatesLocalVars memory vars;
vars.totalDebt = totalStableDebt.add(totalVariableDebt);
vars.currentVariableBorrowRate = 0;
vars.currentStableBorrowRate = 0;
vars.currentLiquidityRate = 0;
vars.utilizationRate = vars.totalDebt == 0
? 0
: vars.totalDebt.rayDiv(availableLiquidity.add(vars.totalDebt));
vars.currentStableBorrowRate = ILendingRateOracle(addressesProvider.getLendingRateOracle())
.getMarketBorrowRate(reserve);
if (vars.utilizationRate > OPTIMAL_UTILIZATION_RATE) {
uint256 excessUtilizationRateRatio =
vars.utilizationRate.sub(OPTIMAL_UTILIZATION_RATE).rayDiv(EXCESS_UTILIZATION_RATE);
vars.currentStableBorrowRate = vars.currentStableBorrowRate.add(_stableRateSlope1).add(
_stableRateSlope2.rayMul(excessUtilizationRateRatio)
);
vars.currentVariableBorrowRate = _baseVariableBorrowRate.add(_variableRateSlope1).add(
_variableRateSlope2.rayMul(excessUtilizationRateRatio)
);
} else {
vars.currentStableBorrowRate = vars.currentStableBorrowRate.add(
_stableRateSlope1.rayMul(vars.utilizationRate.rayDiv(OPTIMAL_UTILIZATION_RATE))
);
vars.currentVariableBorrowRate = _baseVariableBorrowRate.add(
vars.utilizationRate.rayMul(_variableRateSlope1).rayDiv(OPTIMAL_UTILIZATION_RATE)
);
}
vars.currentLiquidityRate = _getOverallBorrowRate(
totalStableDebt,
totalVariableDebt,
vars
.currentVariableBorrowRate,
averageStableBorrowRate
)
.rayMul(vars.utilizationRate)
.percentMul(PercentageMath.PERCENTAGE_FACTOR.sub(reserveFactor));
return (
vars.currentLiquidityRate,
vars.currentStableBorrowRate,
vars.currentVariableBorrowRate
);
}
/**
* @dev Calculates the overall borrow rate as the weighted average between the total variable debt and total stable debt
* @param totalStableDebt The total borrowed from the reserve a stable rate
* @param totalVariableDebt The total borrowed from the reserve at a variable rate
* @param currentVariableBorrowRate The current variable borrow rate of the reserve
* @param currentAverageStableBorrowRate The current weighted average of all the stable rate loans
* @return The weighted averaged borrow rate
**/
function _getOverallBorrowRate(
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 currentVariableBorrowRate,
uint256 currentAverageStableBorrowRate
) internal pure returns (uint256) {
uint256 totalDebt = totalStableDebt.add(totalVariableDebt);
if (totalDebt == 0) return 0;
uint256 weightedVariableRate = totalVariableDebt.wadToRay().rayMul(currentVariableBorrowRate);
uint256 weightedStableRate = totalStableDebt.wadToRay().rayMul(currentAverageStableBorrowRate);
uint256 overallBorrowRate =
weightedVariableRate.add(weightedStableRate).rayDiv(totalDebt.wadToRay());
return overallBorrowRate;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title ILendingRateOracle interface
* @notice Interface for the Aave borrow rate oracle. Provides the average market borrow rate to be used as a base for the stable borrow rate calculations
**/
interface ILendingRateOracle {
/**
@dev returns the market borrow rate in ray
**/
function getMarketBorrowRate(address asset) external view returns (uint256);
/**
@dev sets the market borrow rate. Rate value must be in ray
**/
function setMarketBorrowRate(address asset, uint256 rate) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {IAaveIncentivesController} from '../interfaces/IAaveIncentivesController.sol';
import {IUiPoolDataProvider} from './interfaces/IUiPoolDataProvider.sol';
import {ILendingPool} from '../interfaces/ILendingPool.sol';
import {IPriceOracleGetter} from '../interfaces/IPriceOracleGetter.sol';
import {IAToken} from '../interfaces/IAToken.sol';
import {IVariableDebtToken} from '../interfaces/IVariableDebtToken.sol';
import {IStableDebtToken} from '../interfaces/IStableDebtToken.sol';
import {WadRayMath} from '../protocol/libraries/math/WadRayMath.sol';
import {ReserveConfiguration} from '../protocol/libraries/configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../protocol/libraries/configuration/UserConfiguration.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
import {
DefaultReserveInterestRateStrategy
} from '../protocol/lendingpool/DefaultReserveInterestRateStrategy.sol';
contract UiPoolDataProvider is IUiPoolDataProvider {
using WadRayMath for uint256;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
using UserConfiguration for DataTypes.UserConfigurationMap;
address public constant MOCK_USD_ADDRESS = 0x10F7Fc1F91Ba351f9C629c5947AD69bD03C05b96;
IAaveIncentivesController public immutable override incentivesController;
IPriceOracleGetter public immutable oracle;
constructor(IAaveIncentivesController _incentivesController, IPriceOracleGetter _oracle) public {
incentivesController = _incentivesController;
oracle = _oracle;
}
function getInterestRateStrategySlopes(DefaultReserveInterestRateStrategy interestRateStrategy)
internal
view
returns (
uint256,
uint256,
uint256,
uint256
)
{
return (
interestRateStrategy.variableRateSlope1(),
interestRateStrategy.variableRateSlope2(),
interestRateStrategy.stableRateSlope1(),
interestRateStrategy.stableRateSlope2()
);
}
function getReservesList(ILendingPoolAddressesProvider provider)
public
view
override
returns (address[] memory)
{
ILendingPool lendingPool = ILendingPool(provider.getLendingPool());
return lendingPool.getReservesList();
}
function getSimpleReservesData(ILendingPoolAddressesProvider provider)
public
view
override
returns (
AggregatedReserveData[] memory,
uint256,
uint256
)
{
ILendingPool lendingPool = ILendingPool(provider.getLendingPool());
address[] memory reserves = lendingPool.getReservesList();
AggregatedReserveData[] memory reservesData = new AggregatedReserveData[](reserves.length);
for (uint256 i = 0; i < reserves.length; i++) {
AggregatedReserveData memory reserveData = reservesData[i];
reserveData.underlyingAsset = reserves[i];
// reserve current state
DataTypes.ReserveData memory baseData =
lendingPool.getReserveData(reserveData.underlyingAsset);
reserveData.liquidityIndex = baseData.liquidityIndex;
reserveData.variableBorrowIndex = baseData.variableBorrowIndex;
reserveData.liquidityRate = baseData.currentLiquidityRate;
reserveData.variableBorrowRate = baseData.currentVariableBorrowRate;
reserveData.stableBorrowRate = baseData.currentStableBorrowRate;
reserveData.lastUpdateTimestamp = baseData.lastUpdateTimestamp;
reserveData.aTokenAddress = baseData.aTokenAddress;
reserveData.stableDebtTokenAddress = baseData.stableDebtTokenAddress;
reserveData.variableDebtTokenAddress = baseData.variableDebtTokenAddress;
reserveData.interestRateStrategyAddress = baseData.interestRateStrategyAddress;
reserveData.priceInEth = oracle.getAssetPrice(reserveData.underlyingAsset);
reserveData.availableLiquidity = IERC20Detailed(reserveData.underlyingAsset).balanceOf(
reserveData.aTokenAddress
);
(
reserveData.totalPrincipalStableDebt,
,
reserveData.averageStableRate,
reserveData.stableDebtLastUpdateTimestamp
) = IStableDebtToken(reserveData.stableDebtTokenAddress).getSupplyData();
reserveData.totalScaledVariableDebt = IVariableDebtToken(reserveData.variableDebtTokenAddress)
.scaledTotalSupply();
// reserve configuration
// we're getting this info from the aToken, because some of assets can be not compliant with ETC20Detailed
reserveData.symbol = IERC20Detailed(reserveData.underlyingAsset).symbol();
reserveData.name = '';
(
reserveData.baseLTVasCollateral,
reserveData.reserveLiquidationThreshold,
reserveData.reserveLiquidationBonus,
reserveData.decimals,
reserveData.reserveFactor
) = baseData.configuration.getParamsMemory();
(
reserveData.isActive,
reserveData.isFrozen,
reserveData.borrowingEnabled,
reserveData.stableBorrowRateEnabled
) = baseData.configuration.getFlagsMemory();
reserveData.usageAsCollateralEnabled = reserveData.baseLTVasCollateral != 0;
(
reserveData.variableRateSlope1,
reserveData.variableRateSlope2,
reserveData.stableRateSlope1,
reserveData.stableRateSlope2
) = getInterestRateStrategySlopes(
DefaultReserveInterestRateStrategy(reserveData.interestRateStrategyAddress)
);
// incentives
if (address(0) != address(incentivesController)) {
(
reserveData.aTokenIncentivesIndex,
reserveData.aEmissionPerSecond,
reserveData.aIncentivesLastUpdateTimestamp
) = incentivesController.getAssetData(reserveData.aTokenAddress);
(
reserveData.sTokenIncentivesIndex,
reserveData.sEmissionPerSecond,
reserveData.sIncentivesLastUpdateTimestamp
) = incentivesController.getAssetData(reserveData.stableDebtTokenAddress);
(
reserveData.vTokenIncentivesIndex,
reserveData.vEmissionPerSecond,
reserveData.vIncentivesLastUpdateTimestamp
) = incentivesController.getAssetData(reserveData.variableDebtTokenAddress);
}
}
uint256 emissionEndTimestamp;
if (address(0) != address(incentivesController)) {
emissionEndTimestamp = incentivesController.DISTRIBUTION_END();
}
return (reservesData, oracle.getAssetPrice(MOCK_USD_ADDRESS), emissionEndTimestamp);
}
function getUserReservesData(ILendingPoolAddressesProvider provider, address user)
external
view
override
returns (UserReserveData[] memory, uint256)
{
ILendingPool lendingPool = ILendingPool(provider.getLendingPool());
address[] memory reserves = lendingPool.getReservesList();
DataTypes.UserConfigurationMap memory userConfig = lendingPool.getUserConfiguration(user);
UserReserveData[] memory userReservesData =
new UserReserveData[](user != address(0) ? reserves.length : 0);
for (uint256 i = 0; i < reserves.length; i++) {
DataTypes.ReserveData memory baseData = lendingPool.getReserveData(reserves[i]);
// incentives
if (address(0) != address(incentivesController)) {
userReservesData[i].aTokenincentivesUserIndex = incentivesController.getUserAssetData(
user,
baseData.aTokenAddress
);
userReservesData[i].vTokenincentivesUserIndex = incentivesController.getUserAssetData(
user,
baseData.variableDebtTokenAddress
);
userReservesData[i].sTokenincentivesUserIndex = incentivesController.getUserAssetData(
user,
baseData.stableDebtTokenAddress
);
}
// user reserve data
userReservesData[i].underlyingAsset = reserves[i];
userReservesData[i].scaledATokenBalance = IAToken(baseData.aTokenAddress).scaledBalanceOf(
user
);
userReservesData[i].usageAsCollateralEnabledOnUser = userConfig.isUsingAsCollateral(i);
if (userConfig.isBorrowing(i)) {
userReservesData[i].scaledVariableDebt = IVariableDebtToken(
baseData
.variableDebtTokenAddress
)
.scaledBalanceOf(user);
userReservesData[i].principalStableDebt = IStableDebtToken(baseData.stableDebtTokenAddress)
.principalBalanceOf(user);
if (userReservesData[i].principalStableDebt != 0) {
userReservesData[i].stableBorrowRate = IStableDebtToken(baseData.stableDebtTokenAddress)
.getUserStableRate(user);
userReservesData[i].stableBorrowLastUpdateTimestamp = IStableDebtToken(
baseData
.stableDebtTokenAddress
)
.getUserLastUpdated(user);
}
}
}
uint256 userUnclaimedRewards;
if (address(0) != address(incentivesController)) {
userUnclaimedRewards = incentivesController.getUserUnclaimedRewards(user);
}
return (userReservesData, userUnclaimedRewards);
}
function getReservesData(ILendingPoolAddressesProvider provider, address user)
external
view
override
returns (
AggregatedReserveData[] memory,
UserReserveData[] memory,
uint256,
IncentivesControllerData memory
)
{
ILendingPool lendingPool = ILendingPool(provider.getLendingPool());
address[] memory reserves = lendingPool.getReservesList();
DataTypes.UserConfigurationMap memory userConfig = lendingPool.getUserConfiguration(user);
AggregatedReserveData[] memory reservesData = new AggregatedReserveData[](reserves.length);
UserReserveData[] memory userReservesData =
new UserReserveData[](user != address(0) ? reserves.length : 0);
for (uint256 i = 0; i < reserves.length; i++) {
AggregatedReserveData memory reserveData = reservesData[i];
reserveData.underlyingAsset = reserves[i];
// reserve current state
DataTypes.ReserveData memory baseData =
lendingPool.getReserveData(reserveData.underlyingAsset);
reserveData.liquidityIndex = baseData.liquidityIndex;
reserveData.variableBorrowIndex = baseData.variableBorrowIndex;
reserveData.liquidityRate = baseData.currentLiquidityRate;
reserveData.variableBorrowRate = baseData.currentVariableBorrowRate;
reserveData.stableBorrowRate = baseData.currentStableBorrowRate;
reserveData.lastUpdateTimestamp = baseData.lastUpdateTimestamp;
reserveData.aTokenAddress = baseData.aTokenAddress;
reserveData.stableDebtTokenAddress = baseData.stableDebtTokenAddress;
reserveData.variableDebtTokenAddress = baseData.variableDebtTokenAddress;
reserveData.interestRateStrategyAddress = baseData.interestRateStrategyAddress;
reserveData.priceInEth = oracle.getAssetPrice(reserveData.underlyingAsset);
reserveData.availableLiquidity = IERC20Detailed(reserveData.underlyingAsset).balanceOf(
reserveData.aTokenAddress
);
(
reserveData.totalPrincipalStableDebt,
,
reserveData.averageStableRate,
reserveData.stableDebtLastUpdateTimestamp
) = IStableDebtToken(reserveData.stableDebtTokenAddress).getSupplyData();
reserveData.totalScaledVariableDebt = IVariableDebtToken(reserveData.variableDebtTokenAddress)
.scaledTotalSupply();
// reserve configuration
// we're getting this info from the aToken, because some of assets can be not compliant with ETC20Detailed
reserveData.symbol = IERC20Detailed(reserveData.underlyingAsset).symbol();
reserveData.name = '';
(
reserveData.baseLTVasCollateral,
reserveData.reserveLiquidationThreshold,
reserveData.reserveLiquidationBonus,
reserveData.decimals,
reserveData.reserveFactor
) = baseData.configuration.getParamsMemory();
(
reserveData.isActive,
reserveData.isFrozen,
reserveData.borrowingEnabled,
reserveData.stableBorrowRateEnabled
) = baseData.configuration.getFlagsMemory();
reserveData.usageAsCollateralEnabled = reserveData.baseLTVasCollateral != 0;
(
reserveData.variableRateSlope1,
reserveData.variableRateSlope2,
reserveData.stableRateSlope1,
reserveData.stableRateSlope2
) = getInterestRateStrategySlopes(
DefaultReserveInterestRateStrategy(reserveData.interestRateStrategyAddress)
);
// incentives
if (address(0) != address(incentivesController)) {
(
reserveData.aTokenIncentivesIndex,
reserveData.aEmissionPerSecond,
reserveData.aIncentivesLastUpdateTimestamp
) = incentivesController.getAssetData(reserveData.aTokenAddress);
(
reserveData.sTokenIncentivesIndex,
reserveData.sEmissionPerSecond,
reserveData.sIncentivesLastUpdateTimestamp
) = incentivesController.getAssetData(reserveData.stableDebtTokenAddress);
(
reserveData.vTokenIncentivesIndex,
reserveData.vEmissionPerSecond,
reserveData.vIncentivesLastUpdateTimestamp
) = incentivesController.getAssetData(reserveData.variableDebtTokenAddress);
}
if (user != address(0)) {
// incentives
if (address(0) != address(incentivesController)) {
userReservesData[i].aTokenincentivesUserIndex = incentivesController.getUserAssetData(
user,
reserveData.aTokenAddress
);
userReservesData[i].vTokenincentivesUserIndex = incentivesController.getUserAssetData(
user,
reserveData.variableDebtTokenAddress
);
userReservesData[i].sTokenincentivesUserIndex = incentivesController.getUserAssetData(
user,
reserveData.stableDebtTokenAddress
);
}
// user reserve data
userReservesData[i].underlyingAsset = reserveData.underlyingAsset;
userReservesData[i].scaledATokenBalance = IAToken(reserveData.aTokenAddress)
.scaledBalanceOf(user);
userReservesData[i].usageAsCollateralEnabledOnUser = userConfig.isUsingAsCollateral(i);
if (userConfig.isBorrowing(i)) {
userReservesData[i].scaledVariableDebt = IVariableDebtToken(
reserveData
.variableDebtTokenAddress
)
.scaledBalanceOf(user);
userReservesData[i].principalStableDebt = IStableDebtToken(
reserveData
.stableDebtTokenAddress
)
.principalBalanceOf(user);
if (userReservesData[i].principalStableDebt != 0) {
userReservesData[i].stableBorrowRate = IStableDebtToken(
reserveData
.stableDebtTokenAddress
)
.getUserStableRate(user);
userReservesData[i].stableBorrowLastUpdateTimestamp = IStableDebtToken(
reserveData
.stableDebtTokenAddress
)
.getUserLastUpdated(user);
}
}
}
}
IncentivesControllerData memory incentivesControllerData;
if (address(0) != address(incentivesController)) {
if (user != address(0)) {
incentivesControllerData.userUnclaimedRewards = incentivesController
.getUserUnclaimedRewards(user);
}
incentivesControllerData.emissionEndTimestamp = incentivesController.DISTRIBUTION_END();
}
return (
reservesData,
userReservesData,
oracle.getAssetPrice(MOCK_USD_ADDRESS),
incentivesControllerData
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
interface IUiPoolDataProvider {
struct AggregatedReserveData {
address underlyingAsset;
string name;
string symbol;
uint256 decimals;
uint256 baseLTVasCollateral;
uint256 reserveLiquidationThreshold;
uint256 reserveLiquidationBonus;
uint256 reserveFactor;
bool usageAsCollateralEnabled;
bool borrowingEnabled;
bool stableBorrowRateEnabled;
bool isActive;
bool isFrozen;
// base data
uint128 liquidityIndex;
uint128 variableBorrowIndex;
uint128 liquidityRate;
uint128 variableBorrowRate;
uint128 stableBorrowRate;
uint40 lastUpdateTimestamp;
address aTokenAddress;
address stableDebtTokenAddress;
address variableDebtTokenAddress;
address interestRateStrategyAddress;
//
uint256 availableLiquidity;
uint256 totalPrincipalStableDebt;
uint256 averageStableRate;
uint256 stableDebtLastUpdateTimestamp;
uint256 totalScaledVariableDebt;
uint256 priceInEth;
uint256 variableRateSlope1;
uint256 variableRateSlope2;
uint256 stableRateSlope1;
uint256 stableRateSlope2;
// incentives
uint256 aEmissionPerSecond;
uint256 vEmissionPerSecond;
uint256 sEmissionPerSecond;
uint256 aIncentivesLastUpdateTimestamp;
uint256 vIncentivesLastUpdateTimestamp;
uint256 sIncentivesLastUpdateTimestamp;
uint256 aTokenIncentivesIndex;
uint256 vTokenIncentivesIndex;
uint256 sTokenIncentivesIndex;
}
struct UserReserveData {
address underlyingAsset;
uint256 scaledATokenBalance;
bool usageAsCollateralEnabledOnUser;
uint256 stableBorrowRate;
uint256 scaledVariableDebt;
uint256 principalStableDebt;
uint256 stableBorrowLastUpdateTimestamp;
// incentives
uint256 aTokenincentivesUserIndex;
uint256 vTokenincentivesUserIndex;
uint256 sTokenincentivesUserIndex;
}
struct IncentivesControllerData {
uint256 userUnclaimedRewards;
uint256 emissionEndTimestamp;
}
function getReservesList(ILendingPoolAddressesProvider provider)
external
view
returns (address[] memory);
function incentivesController() external view returns (IAaveIncentivesController);
function getSimpleReservesData(ILendingPoolAddressesProvider provider)
external
view
returns (
AggregatedReserveData[] memory,
uint256, // usd price eth
uint256 // emission end timestamp
);
function getUserReservesData(ILendingPoolAddressesProvider provider, address user)
external
view
returns (
UserReserveData[] memory,
uint256 // user unclaimed rewards
);
// generic method with full data
function getReservesData(ILendingPoolAddressesProvider provider, address user)
external
view
returns (
AggregatedReserveData[] memory,
UserReserveData[] memory,
uint256,
IncentivesControllerData memory
);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {IWETH} from './interfaces/IWETH.sol';
import {IWETHGateway} from './interfaces/IWETHGateway.sol';
import {ILendingPool} from '../interfaces/ILendingPool.sol';
import {IAToken} from '../interfaces/IAToken.sol';
import {ReserveConfiguration} from '../protocol/libraries/configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../protocol/libraries/configuration/UserConfiguration.sol';
import {Helpers} from '../protocol/libraries/helpers/Helpers.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
contract WETHGateway is IWETHGateway, Ownable {
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
using UserConfiguration for DataTypes.UserConfigurationMap;
IWETH internal immutable WETH;
/**
* @dev Sets the WETH address and the LendingPoolAddressesProvider address. Infinite approves lending pool.
* @param weth Address of the Wrapped Ether contract
**/
constructor(address weth) public {
WETH = IWETH(weth);
}
function authorizeLendingPool(address lendingPool) external onlyOwner {
WETH.approve(lendingPool, uint256(-1));
}
/**
* @dev deposits WETH into the reserve, using native ETH. A corresponding amount of the overlying asset (aTokens)
* is minted.
* @param lendingPool address of the targeted underlying lending pool
* @param onBehalfOf address of the user who will receive the aTokens representing the deposit
* @param referralCode integrators are assigned a referral code and can potentially receive rewards.
**/
function depositETH(
address lendingPool,
address onBehalfOf,
uint16 referralCode
) public payable virtual override {
WETH.deposit{value: msg.value}();
ILendingPool(lendingPool).deposit(address(WETH), msg.value, onBehalfOf, referralCode);
}
/**
* @dev withdraws the WETH _reserves of msg.sender.
* @param lendingPool address of the targeted underlying lending pool
* @param amount amount of aWETH to withdraw and receive native ETH
* @param to address of the user who will receive native ETH
*/
function withdrawETH(
address lendingPool,
uint256 amount,
address to
) external virtual override {
IAToken aWETH = IAToken(ILendingPool(lendingPool).getReserveData(address(WETH)).aTokenAddress);
uint256 userBalance = aWETH.balanceOf(msg.sender);
uint256 amountToWithdraw = amount;
// if amount is equal to uint(-1), the user wants to redeem everything
if (amount == type(uint256).max) {
amountToWithdraw = userBalance;
}
aWETH.transferFrom(msg.sender, address(this), amountToWithdraw);
ILendingPool(lendingPool).withdraw(address(WETH), amountToWithdraw, address(this));
WETH.withdraw(amountToWithdraw);
_safeTransferETH(to, amountToWithdraw);
}
/**
* @dev repays a borrow on the WETH reserve, for the specified amount (or for the whole amount, if uint256(-1) is specified).
* @param lendingPool address of the targeted underlying lending pool
* @param amount the amount to repay, or uint256(-1) if the user wants to repay everything
* @param rateMode the rate mode to repay
* @param onBehalfOf the address for which msg.sender is repaying
*/
function repayETH(
address lendingPool,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) public payable virtual override {
(uint256 stableDebt, uint256 variableDebt) =
Helpers.getUserCurrentDebtMemory(
onBehalfOf,
ILendingPool(lendingPool).getReserveData(address(WETH))
);
uint256 paybackAmount =
DataTypes.InterestRateMode(rateMode) == DataTypes.InterestRateMode.STABLE
? stableDebt
: variableDebt;
if (amount < paybackAmount) {
paybackAmount = amount;
}
require(msg.value >= paybackAmount, 'msg.value is less than repayment amount');
WETH.deposit{value: paybackAmount}();
ILendingPool(lendingPool).repay(address(WETH), msg.value, rateMode, onBehalfOf);
// refund remaining dust eth
if (msg.value > paybackAmount) _safeTransferETH(msg.sender, msg.value - paybackAmount);
}
/**
* @dev borrow WETH, unwraps to ETH and send both the ETH and DebtTokens to msg.sender, via `approveDelegation` and onBehalf argument in `LendingPool.borrow`.
* @param lendingPool address of the targeted underlying lending pool
* @param amount the amount of ETH to borrow
* @param interesRateMode the interest rate mode
* @param referralCode integrators are assigned a referral code and can potentially receive rewards
*/
function borrowETH(
address lendingPool,
uint256 amount,
uint256 interesRateMode,
uint16 referralCode
) external virtual override {
ILendingPool(lendingPool).borrow(
address(WETH),
amount,
interesRateMode,
referralCode,
msg.sender
);
WETH.withdraw(amount);
_safeTransferETH(msg.sender, amount);
}
/**
* @dev transfer ETH to an address, revert if it fails.
* @param to recipient of the transfer
* @param value the amount to send
*/
function _safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'ETH_TRANSFER_FAILED');
}
/**
* @dev transfer ERC20 from the utility contract, for ERC20 recovery in case of stuck tokens due
* direct transfers to the contract address.
* @param token token to transfer
* @param to recipient of the transfer
* @param amount amount to send
*/
function emergencyTokenTransfer(
address token,
address to,
uint256 amount
) external onlyOwner {
IERC20(token).transfer(to, amount);
}
/**
* @dev transfer native Ether from the utility contract, for native Ether recovery in case of stuck Ether
* due selfdestructs or transfer ether to pre-computated contract address before deployment.
* @param to recipient of the transfer
* @param amount amount to send
*/
function emergencyEtherTransfer(address to, uint256 amount) external onlyOwner {
_safeTransferETH(to, amount);
}
/**
* @dev Get WETH address used by WETHGateway
*/
function getWETHAddress() external view returns (address) {
return address(WETH);
}
/**
* @dev Only WETH contract is allowed to transfer ETH here. Prevent other addresses to send Ether to this contract.
*/
receive() external payable {
require(msg.sender == address(WETH), 'Receive not allowed');
}
/**
* @dev Revert fallback calls
*/
fallback() external payable {
revert('Fallback not allowed');
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
interface IWETH {
function deposit() external payable;
function withdraw(uint256) external;
function approve(address guy, uint256 wad) external returns (bool);
function transferFrom(
address src,
address dst,
uint256 wad
) external returns (bool);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
interface IWETHGateway {
function depositETH(
address lendingPool,
address onBehalfOf,
uint16 referralCode
) external payable;
function withdrawETH(
address lendingPool,
uint256 amount,
address onBehalfOf
) external;
function repayETH(
address lendingPool,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) external payable;
function borrowETH(
address lendingPool,
uint256 amount,
uint256 interesRateMode,
uint16 referralCode
) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {IWETH} from './interfaces/IWETH.sol';
import {WETHGateway} from './WETHGateway.sol';
import {ILendingPool} from '../interfaces/ILendingPool.sol';
import {IAToken} from '../interfaces/IAToken.sol';
import {ReserveConfiguration} from '../protocol/libraries/configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../protocol/libraries/configuration/UserConfiguration.sol';
import {Helpers} from '../protocol/libraries/helpers/Helpers.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
import {IPermissionManager} from '../interfaces/IPermissionManager.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {Errors} from '../protocol/libraries/helpers/Errors.sol';
contract PermissionedWETHGateway is WETHGateway {
/**
* @dev Sets the WETH address and the LendingPoolAddressesProvider address. Infinite approves lending pool.
* @param weth Address of the Wrapped Ether contract
**/
constructor(address weth) public WETHGateway(weth) {}
/**
* @dev deposits WETH into the reserve, using native ETH. A corresponding amount of the overlying asset (aTokens)
* is minted.
* @param lendingPool address of the targeted underlying lending pool
* @param onBehalfOf address of the user who will receive the aTokens representing the deposit
* @param referralCode integrators are assigned a referral code and can potentially receive rewards.
**/
function depositETH(
address lendingPool,
address onBehalfOf,
uint16 referralCode
) public payable override {
ILendingPool pool = ILendingPool(lendingPool);
require(
_isInRoleAndValidPermissionAdmin(msg.sender, DataTypes.Roles.DEPOSITOR, pool),
Errors.PLP_USER_UNAUTHORIZED
);
super.depositETH(lendingPool, onBehalfOf, referralCode);
}
/**
* @dev repays a borrow on the WETH reserve, for the specified amount (or for the whole amount, if uint256(-1) is specified).
* @param lendingPool address of the targeted underlying lending pool
* @param amount the amount to repay, or uint256(-1) if the user wants to repay everything
* @param rateMode the rate mode to repay
* @param onBehalfOf the address for which msg.sender is repaying
*/
function repayETH(
address lendingPool,
uint256 amount,
uint256 rateMode,
address onBehalfOf
) public payable override {
ILendingPool pool = ILendingPool(lendingPool);
require(_isInRole(msg.sender, DataTypes.Roles.BORROWER, pool), Errors.PLP_USER_UNAUTHORIZED);
super.repayETH(lendingPool, amount, rateMode, onBehalfOf);
}
function _getPermissionManager(ILendingPool pool) internal view returns (IPermissionManager) {
ILendingPoolAddressesProvider provider =
ILendingPoolAddressesProvider(pool.getAddressesProvider());
return IPermissionManager(provider.getAddress(keccak256('PERMISSION_MANAGER')));
}
function _isInRole(
address user,
DataTypes.Roles role,
ILendingPool pool
) internal view returns (bool) {
IPermissionManager manager = _getPermissionManager(pool);
return manager.isInRole(user, uint256(role));
}
function _isInRoleAndValidPermissionAdmin(
address user,
DataTypes.Roles role,
ILendingPool pool
) internal view returns (bool) {
IPermissionManager manager = _getPermissionManager(pool);
return manager.isInRole(user, uint256(role)) && manager.isUserPermissionAdminValid(user);
}
}
pragma solidity 0.6.12;
import {IPermissionManager} from '../../interfaces/IPermissionManager.sol';
import {Ownable} from '../../dependencies/openzeppelin/contracts/Ownable.sol';
/**
* @title PermissionManager contract
* @notice Implements basic whitelisting functions for different actors of the permissioned protocol
* @author Aave
**/
contract PermissionManager is IPermissionManager, Ownable {
struct UserData {
uint256 permissions;
address permissionAdmin;
}
mapping(address => UserData) _users;
mapping(address => uint256) _permissionsAdmins;
uint256 public constant MAX_NUM_OF_ROLES = 256;
modifier onlyPermissionAdmins(address user) {
require(_permissionsAdmins[user] > 0, 'CALLER_NOT_PERMISSIONS_ADMIN');
_;
}
///@inheritdoc IPermissionManager
function addPermissionAdmins(address[] calldata admins) external override onlyOwner {
for (uint256 i = 0; i < admins.length; i++) {
_permissionsAdmins[admins[i]] = 1;
emit PermissionsAdminSet(admins[i], true);
}
}
///@inheritdoc IPermissionManager
function removePermissionAdmins(address[] calldata admins) external override onlyOwner {
for (uint256 i = 0; i < admins.length; i++) {
_permissionsAdmins[admins[i]] = 0;
emit PermissionsAdminSet(admins[i], false);
}
}
///@inheritdoc IPermissionManager
function addPermissions(uint256[] calldata roles, address[] calldata users)
external
override
onlyPermissionAdmins(msg.sender)
{
require(roles.length == users.length, 'INCONSISTENT_ARRAYS_LENGTH');
for (uint256 i = 0; i < users.length; i++) {
uint256 role = roles[i];
address user = users[i];
require(role < MAX_NUM_OF_ROLES, 'INVALID_ROLE');
uint256 permissions = _users[user].permissions;
address permissionAdmin = _users[user].permissionAdmin;
require(
(permissions != 0 && permissionAdmin == msg.sender) ||
_users[user].permissionAdmin == address(0),
'INVALID_PERMISSIONADMIN'
);
if (permissions == 0) {
_users[user].permissionAdmin = msg.sender;
}
_users[user].permissions = permissions | (1 << role);
emit RoleSet(user, role, msg.sender, true);
}
}
///@inheritdoc IPermissionManager
function removePermissions(uint256[] calldata roles, address[] calldata users)
external
override
onlyPermissionAdmins(msg.sender)
{
require(roles.length == users.length, 'INCONSISTENT_ARRAYS_LENGTH');
for (uint256 i = 0; i < users.length; i++) {
uint256 role = roles[i];
address user = users[i];
require(role < MAX_NUM_OF_ROLES, 'INVALID_ROLE');
uint256 permissions = _users[user].permissions;
address permissionAdmin = _users[user].permissionAdmin;
require(
(permissions != 0 && permissionAdmin == msg.sender) ||
_users[user].permissionAdmin == address(0),
'INVALID_PERMISSIONADMIN'
);
_users[user].permissions = permissions & ~(1 << role);
if (_users[user].permissions == 0) {
//all permission have been removed
_users[user].permissionAdmin = address(0);
}
emit RoleSet(user, role, msg.sender, false);
}
}
///@inheritdoc IPermissionManager
function getUserPermissions(address user)
external
view
override
returns (uint256[] memory, uint256)
{
uint256[] memory roles = new uint256[](256);
uint256 rolesCount = 0;
uint256 userPermissions = _users[user].permissions;
for (uint256 i = 0; i < 256; i++) {
if ((userPermissions >> i) & 1 > 0) {
roles[rolesCount] = i;
rolesCount++;
}
}
return (roles, rolesCount);
}
///@inheritdoc IPermissionManager
function isInRole(address user, uint256 role) external view override returns (bool) {
return (_users[user].permissions >> role) & 1 > 0;
}
///@inheritdoc IPermissionManager
function isInAllRoles(address user, uint256[] calldata roles)
external
view
override
returns (bool)
{
for (uint256 i = 0; i < roles.length; i++) {
if ((_users[user].permissions >> roles[i]) & 1 == 0) {
return false;
}
}
return true;
}
///@inheritdoc IPermissionManager
function isInAnyRole(address user, uint256[] calldata roles)
external
view
override
returns (bool)
{
for (uint256 i = 0; i < roles.length; i++) {
if ((_users[user].permissions >> roles[i]) & 1 > 0) {
return true;
}
}
return false;
}
///@inheritdoc IPermissionManager
function isPermissionsAdmin(address admin) public view override returns (bool) {
return _permissionsAdmins[admin] > 0;
}
///@inheritdoc IPermissionManager
function getUserPermissionAdmin(address user) external view override returns (address) {
return _users[user].permissionAdmin;
}
///@inheritdoc IPermissionManager
function isUserPermissionAdminValid(address user) external view override returns (bool) {
return _permissionsAdmins[_users[user].permissionAdmin] > 0;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Ownable} from '../../dependencies/openzeppelin/contracts/Ownable.sol';
import {
ILendingPoolAddressesProviderRegistry
} from '../../interfaces/ILendingPoolAddressesProviderRegistry.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
/**
* @title LendingPoolAddressesProviderRegistry contract
* @dev Main registry of LendingPoolAddressesProvider of multiple Aave protocol's markets
* - Used for indexing purposes of Aave protocol's markets
* - The id assigned to a LendingPoolAddressesProvider refers to the market it is connected with,
* for example with `0` for the Aave main market and `1` for the next created
* @author Aave
**/
contract LendingPoolAddressesProviderRegistry is Ownable, ILendingPoolAddressesProviderRegistry {
mapping(address => uint256) private _addressesProviders;
address[] private _addressesProvidersList;
/**
* @dev Returns the list of registered addresses provider
* @return The list of addresses provider, potentially containing address(0) elements
**/
function getAddressesProvidersList() external view override returns (address[] memory) {
address[] memory addressesProvidersList = _addressesProvidersList;
uint256 maxLength = addressesProvidersList.length;
address[] memory activeProviders = new address[](maxLength);
for (uint256 i = 0; i < maxLength; i++) {
if (_addressesProviders[addressesProvidersList[i]] > 0) {
activeProviders[i] = addressesProvidersList[i];
}
}
return activeProviders;
}
/**
* @dev Registers an addresses provider
* @param provider The address of the new LendingPoolAddressesProvider
* @param id The id for the new LendingPoolAddressesProvider, referring to the market it belongs to
**/
function registerAddressesProvider(address provider, uint256 id) external override onlyOwner {
require(id != 0, Errors.LPAPR_INVALID_ADDRESSES_PROVIDER_ID);
_addressesProviders[provider] = id;
_addToAddressesProvidersList(provider);
emit AddressesProviderRegistered(provider);
}
/**
* @dev Removes a LendingPoolAddressesProvider from the list of registered addresses provider
* @param provider The LendingPoolAddressesProvider address
**/
function unregisterAddressesProvider(address provider) external override onlyOwner {
require(_addressesProviders[provider] > 0, Errors.LPAPR_PROVIDER_NOT_REGISTERED);
_addressesProviders[provider] = 0;
emit AddressesProviderUnregistered(provider);
}
/**
* @dev Returns the id on a registered LendingPoolAddressesProvider
* @return The id or 0 if the LendingPoolAddressesProvider is not registered
*/
function getAddressesProviderIdByAddress(address addressesProvider)
external
view
override
returns (uint256)
{
return _addressesProviders[addressesProvider];
}
function _addToAddressesProvidersList(address provider) internal {
uint256 providersCount = _addressesProvidersList.length;
for (uint256 i = 0; i < providersCount; i++) {
if (_addressesProvidersList[i] == provider) {
return;
}
}
_addressesProvidersList.push(provider);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
/**
* @title LendingPoolAddressesProviderRegistry contract
* @dev Main registry of LendingPoolAddressesProvider of multiple Aave protocol's markets
* - Used for indexing purposes of Aave protocol's markets
* - The id assigned to a LendingPoolAddressesProvider refers to the market it is connected with,
* for example with `0` for the Aave main market and `1` for the next created
* @author Aave
**/
interface ILendingPoolAddressesProviderRegistry {
event AddressesProviderRegistered(address indexed newAddress);
event AddressesProviderUnregistered(address indexed newAddress);
function getAddressesProvidersList() external view returns (address[] memory);
function getAddressesProviderIdByAddress(address addressesProvider)
external
view
returns (uint256);
function registerAddressesProvider(address provider, uint256 id) external;
function unregisterAddressesProvider(address provider) external;
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {Address} from '../dependencies/openzeppelin/contracts/Address.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {ILendingPool} from '../interfaces/ILendingPool.sol';
import {SafeERC20} from '../dependencies/openzeppelin/contracts/SafeERC20.sol';
import {ReserveConfiguration} from '../protocol/libraries/configuration/ReserveConfiguration.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
/**
* @title WalletBalanceProvider contract
* @author Aave, influenced by https://github.com/wbobeirne/eth-balance-checker/blob/master/contracts/BalanceChecker.sol
* @notice Implements a logic of getting multiple tokens balance for one user address
* @dev NOTE: THIS CONTRACT IS NOT USED WITHIN THE AAVE PROTOCOL. It's an accessory contract used to reduce the number of calls
* towards the blockchain from the Aave backend.
**/
contract WalletBalanceProvider {
using Address for address payable;
using Address for address;
using SafeERC20 for IERC20;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
address constant MOCK_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
/**
@dev Fallback function, don't accept any ETH
**/
receive() external payable {
//only contracts can send ETH to the core
require(msg.sender.isContract(), '22');
}
/**
@dev Check the token balance of a wallet in a token contract
Returns the balance of the token for user. Avoids possible errors:
- return 0 on non-contract address
**/
function balanceOf(address user, address token) public view returns (uint256) {
if (token == MOCK_ETH_ADDRESS) {
return user.balance; // ETH balance
// check if token is actually a contract
} else if (token.isContract()) {
return IERC20(token).balanceOf(user);
}
revert('INVALID_TOKEN');
}
/**
* @notice Fetches, for a list of _users and _tokens (ETH included with mock address), the balances
* @param users The list of users
* @param tokens The list of tokens
* @return And array with the concatenation of, for each user, his/her balances
**/
function batchBalanceOf(address[] calldata users, address[] calldata tokens)
external
view
returns (uint256[] memory)
{
uint256[] memory balances = new uint256[](users.length * tokens.length);
for (uint256 i = 0; i < users.length; i++) {
for (uint256 j = 0; j < tokens.length; j++) {
balances[i * tokens.length + j] = balanceOf(users[i], tokens[j]);
}
}
return balances;
}
/**
@dev provides balances of user wallet for all reserves available on the pool
*/
function getUserWalletBalances(address provider, address user)
external
view
returns (address[] memory, uint256[] memory)
{
ILendingPool pool = ILendingPool(ILendingPoolAddressesProvider(provider).getLendingPool());
address[] memory reserves = pool.getReservesList();
address[] memory reservesWithEth = new address[](reserves.length + 1);
for (uint256 i = 0; i < reserves.length; i++) {
reservesWithEth[i] = reserves[i];
}
reservesWithEth[reserves.length] = MOCK_ETH_ADDRESS;
uint256[] memory balances = new uint256[](reservesWithEth.length);
for (uint256 j = 0; j < reserves.length; j++) {
DataTypes.ReserveConfigurationMap memory configuration =
pool.getConfiguration(reservesWithEth[j]);
(bool isActive, , , ) = configuration.getFlagsMemory();
if (!isActive) {
balances[j] = 0;
continue;
}
balances[j] = balanceOf(user, reservesWithEth[j]);
}
balances[reserves.length] = balanceOf(user, MOCK_ETH_ADDRESS);
return (reservesWithEth, balances);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {ILendingPool} from '../interfaces/ILendingPool.sol';
import {IStableDebtToken} from '../interfaces/IStableDebtToken.sol';
import {IVariableDebtToken} from '../interfaces/IVariableDebtToken.sol';
import {ReserveConfiguration} from '../protocol/libraries/configuration/ReserveConfiguration.sol';
import {UserConfiguration} from '../protocol/libraries/configuration/UserConfiguration.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
contract AaveProtocolDataProvider {
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
using UserConfiguration for DataTypes.UserConfigurationMap;
address constant MKR = 0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2;
address constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
struct TokenData {
string symbol;
address tokenAddress;
}
ILendingPoolAddressesProvider public immutable ADDRESSES_PROVIDER;
constructor(ILendingPoolAddressesProvider addressesProvider) public {
ADDRESSES_PROVIDER = addressesProvider;
}
function getAllReservesTokens() external view returns (TokenData[] memory) {
ILendingPool pool = ILendingPool(ADDRESSES_PROVIDER.getLendingPool());
address[] memory reserves = pool.getReservesList();
TokenData[] memory reservesTokens = new TokenData[](reserves.length);
for (uint256 i = 0; i < reserves.length; i++) {
if (reserves[i] == MKR) {
reservesTokens[i] = TokenData({symbol: 'MKR', tokenAddress: reserves[i]});
continue;
}
if (reserves[i] == ETH) {
reservesTokens[i] = TokenData({symbol: 'ETH', tokenAddress: reserves[i]});
continue;
}
reservesTokens[i] = TokenData({
symbol: IERC20Detailed(reserves[i]).symbol(),
tokenAddress: reserves[i]
});
}
return reservesTokens;
}
function getAllATokens() external view returns (TokenData[] memory) {
ILendingPool pool = ILendingPool(ADDRESSES_PROVIDER.getLendingPool());
address[] memory reserves = pool.getReservesList();
TokenData[] memory aTokens = new TokenData[](reserves.length);
for (uint256 i = 0; i < reserves.length; i++) {
DataTypes.ReserveData memory reserveData = pool.getReserveData(reserves[i]);
aTokens[i] = TokenData({
symbol: IERC20Detailed(reserveData.aTokenAddress).symbol(),
tokenAddress: reserveData.aTokenAddress
});
}
return aTokens;
}
function getReserveConfigurationData(address asset)
external
view
returns (
uint256 decimals,
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus,
uint256 reserveFactor,
bool usageAsCollateralEnabled,
bool borrowingEnabled,
bool stableBorrowRateEnabled,
bool isActive,
bool isFrozen
)
{
DataTypes.ReserveConfigurationMap memory configuration =
ILendingPool(ADDRESSES_PROVIDER.getLendingPool()).getConfiguration(asset);
(ltv, liquidationThreshold, liquidationBonus, decimals, reserveFactor) = configuration
.getParamsMemory();
(isActive, isFrozen, borrowingEnabled, stableBorrowRateEnabled) = configuration
.getFlagsMemory();
usageAsCollateralEnabled = liquidationThreshold > 0;
}
function getReserveData(address asset)
external
view
returns (
uint256 availableLiquidity,
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 liquidityRate,
uint256 variableBorrowRate,
uint256 stableBorrowRate,
uint256 averageStableBorrowRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex,
uint40 lastUpdateTimestamp
)
{
DataTypes.ReserveData memory reserve =
ILendingPool(ADDRESSES_PROVIDER.getLendingPool()).getReserveData(asset);
return (
IERC20Detailed(asset).balanceOf(reserve.aTokenAddress),
IERC20Detailed(reserve.stableDebtTokenAddress).totalSupply(),
IERC20Detailed(reserve.variableDebtTokenAddress).totalSupply(),
reserve.currentLiquidityRate,
reserve.currentVariableBorrowRate,
reserve.currentStableBorrowRate,
IStableDebtToken(reserve.stableDebtTokenAddress).getAverageStableRate(),
reserve.liquidityIndex,
reserve.variableBorrowIndex,
reserve.lastUpdateTimestamp
);
}
function getUserReserveData(address asset, address user)
external
view
returns (
uint256 currentATokenBalance,
uint256 currentStableDebt,
uint256 currentVariableDebt,
uint256 principalStableDebt,
uint256 scaledVariableDebt,
uint256 stableBorrowRate,
uint256 liquidityRate,
uint40 stableRateLastUpdated,
bool usageAsCollateralEnabled
)
{
DataTypes.ReserveData memory reserve =
ILendingPool(ADDRESSES_PROVIDER.getLendingPool()).getReserveData(asset);
DataTypes.UserConfigurationMap memory userConfig =
ILendingPool(ADDRESSES_PROVIDER.getLendingPool()).getUserConfiguration(user);
currentATokenBalance = IERC20Detailed(reserve.aTokenAddress).balanceOf(user);
currentVariableDebt = IERC20Detailed(reserve.variableDebtTokenAddress).balanceOf(user);
currentStableDebt = IERC20Detailed(reserve.stableDebtTokenAddress).balanceOf(user);
principalStableDebt = IStableDebtToken(reserve.stableDebtTokenAddress).principalBalanceOf(user);
scaledVariableDebt = IVariableDebtToken(reserve.variableDebtTokenAddress).scaledBalanceOf(user);
liquidityRate = reserve.currentLiquidityRate;
stableBorrowRate = IStableDebtToken(reserve.stableDebtTokenAddress).getUserStableRate(user);
stableRateLastUpdated = IStableDebtToken(reserve.stableDebtTokenAddress).getUserLastUpdated(
user
);
usageAsCollateralEnabled = userConfig.isUsingAsCollateral(reserve.id);
}
function getReserveTokensAddresses(address asset)
external
view
returns (
address aTokenAddress,
address stableDebtTokenAddress,
address variableDebtTokenAddress
)
{
DataTypes.ReserveData memory reserve =
ILendingPool(ADDRESSES_PROVIDER.getLendingPool()).getReserveData(asset);
return (
reserve.aTokenAddress,
reserve.stableDebtTokenAddress,
reserve.variableDebtTokenAddress
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IVariableDebtToken} from '../../interfaces/IVariableDebtToken.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {DebtTokenBase} from './base/DebtTokenBase.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
/**
* @title VariableDebtToken
* @notice Implements a variable debt token to track the borrowing positions of users
* at variable rate mode
* @author Aave
**/
contract VariableDebtToken is DebtTokenBase, IVariableDebtToken {
using WadRayMath for uint256;
uint256 public constant DEBT_TOKEN_REVISION = 0x1;
ILendingPool internal _pool;
address internal _underlyingAsset;
IAaveIncentivesController internal _incentivesController;
/**
* @dev Initializes the debt token.
* @param pool The address of the lending pool where this aToken will be used
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param debtTokenDecimals The decimals of the debtToken, same as the underlying asset's
* @param debtTokenName The name of the token
* @param debtTokenSymbol The symbol of the token
*/
function initialize(
ILendingPool pool,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 debtTokenDecimals,
string memory debtTokenName,
string memory debtTokenSymbol,
bytes calldata params
) public override initializer {
_setName(debtTokenName);
_setSymbol(debtTokenSymbol);
_setDecimals(debtTokenDecimals);
_pool = pool;
_underlyingAsset = underlyingAsset;
_incentivesController = incentivesController;
emit Initialized(
underlyingAsset,
address(pool),
address(incentivesController),
debtTokenDecimals,
debtTokenName,
debtTokenSymbol,
params
);
}
/**
* @dev Gets the revision of the stable debt token implementation
* @return The debt token implementation revision
**/
function getRevision() internal pure virtual override returns (uint256) {
return DEBT_TOKEN_REVISION;
}
/**
* @dev Calculates the accumulated debt balance of the user
* @return The debt balance of the user
**/
function balanceOf(address user) public view virtual override returns (uint256) {
uint256 scaledBalance = super.balanceOf(user);
if (scaledBalance == 0) {
return 0;
}
return scaledBalance.rayMul(_pool.getReserveNormalizedVariableDebt(_underlyingAsset));
}
/**
* @dev Mints debt token to the `onBehalfOf` address
* - Only callable by the LendingPool
* @param user The address receiving the borrowed underlying, being the delegatee in case
* of credit delegate, or same as `onBehalfOf` otherwise
* @param onBehalfOf The address receiving the debt tokens
* @param amount The amount of debt being minted
* @param index The variable debt index of the reserve
* @return `true` if the the previous balance of the user is 0
**/
function mint(
address user,
address onBehalfOf,
uint256 amount,
uint256 index
) external override onlyLendingPool returns (bool) {
if (user != onBehalfOf) {
_decreaseBorrowAllowance(onBehalfOf, user, amount);
}
uint256 previousBalance = super.balanceOf(onBehalfOf);
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_MINT_AMOUNT);
_mint(onBehalfOf, amountScaled);
emit Transfer(address(0), onBehalfOf, amount);
emit Mint(user, onBehalfOf, amount, index);
return previousBalance == 0;
}
/**
* @dev Burns user variable debt
* - Only callable by the LendingPool
* @param user The user whose debt is getting burned
* @param amount The amount getting burned
* @param index The variable debt index of the reserve
**/
function burn(
address user,
uint256 amount,
uint256 index
) external override onlyLendingPool {
uint256 amountScaled = amount.rayDiv(index);
require(amountScaled != 0, Errors.CT_INVALID_BURN_AMOUNT);
_burn(user, amountScaled);
emit Transfer(user, address(0), amount);
emit Burn(user, amount, index);
}
/**
* @dev Returns the principal debt balance of the user from
* @return The debt balance of the user since the last burn/mint action
**/
function scaledBalanceOf(address user) public view virtual override returns (uint256) {
return super.balanceOf(user);
}
/**
* @dev Returns the total supply of the variable debt token. Represents the total debt accrued by the users
* @return The total supply
**/
function totalSupply() public view virtual override returns (uint256) {
return super.totalSupply().rayMul(_pool.getReserveNormalizedVariableDebt(_underlyingAsset));
}
/**
* @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
* @return the scaled total supply
**/
function scaledTotalSupply() public view virtual override returns (uint256) {
return super.totalSupply();
}
/**
* @dev Returns the principal balance of the user and principal total supply.
* @param user The address of the user
* @return The principal balance of the user
* @return The principal total supply
**/
function getScaledUserBalanceAndSupply(address user)
external
view
override
returns (uint256, uint256)
{
return (super.balanceOf(user), super.totalSupply());
}
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() public view returns (address) {
return _underlyingAsset;
}
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view override returns (IAaveIncentivesController) {
return _getIncentivesController();
}
/**
* @dev Returns the address of the lending pool where this aToken is used
**/
function POOL() public view returns (ILendingPool) {
return _pool;
}
function _getIncentivesController() internal view override returns (IAaveIncentivesController) {
return _incentivesController;
}
function _getUnderlyingAssetAddress() internal view override returns (address) {
return _underlyingAsset;
}
function _getLendingPool() internal view override returns (ILendingPool) {
return _pool;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {VariableDebtToken} from '../../protocol/tokenization/VariableDebtToken.sol';
contract MockVariableDebtToken is VariableDebtToken {
function getRevision() internal pure override returns (uint256) {
return 0x2;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {SafeMath} from '../../dependencies/openzeppelin/contracts/SafeMath.sol';
import {VersionedInitializable} from '../libraries/aave-upgradeability/VersionedInitializable.sol';
import {
InitializableImmutableAdminUpgradeabilityProxy
} from '../libraries/aave-upgradeability/InitializableImmutableAdminUpgradeabilityProxy.sol';
import {ReserveConfiguration} from '../libraries/configuration/ReserveConfiguration.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IERC20Detailed} from '../../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
import {PercentageMath} from '../libraries/math/PercentageMath.sol';
import {DataTypes} from '../libraries/types/DataTypes.sol';
import {IInitializableDebtToken} from '../../interfaces/IInitializableDebtToken.sol';
import {IInitializableAToken} from '../../interfaces/IInitializableAToken.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
import {ILendingPoolConfigurator} from '../../interfaces/ILendingPoolConfigurator.sol';
/**
* @title LendingPoolConfigurator contract
* @author Aave
* @dev Implements the configuration methods for the Aave protocol
**/
contract LendingPoolConfigurator is VersionedInitializable, ILendingPoolConfigurator {
using SafeMath for uint256;
using PercentageMath for uint256;
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
ILendingPoolAddressesProvider internal addressesProvider;
ILendingPool internal pool;
modifier onlyPoolAdmin {
require(addressesProvider.getPoolAdmin() == msg.sender, Errors.CALLER_NOT_POOL_ADMIN);
_;
}
modifier onlyEmergencyAdmin {
require(
addressesProvider.getEmergencyAdmin() == msg.sender,
Errors.LPC_CALLER_NOT_EMERGENCY_ADMIN
);
_;
}
uint256 internal constant CONFIGURATOR_REVISION = 0x1;
function getRevision() internal pure override returns (uint256) {
return CONFIGURATOR_REVISION;
}
function initialize(ILendingPoolAddressesProvider provider) public initializer {
addressesProvider = provider;
pool = ILendingPool(addressesProvider.getLendingPool());
}
/**
* @dev Initializes reserves in batch
**/
function batchInitReserve(InitReserveInput[] calldata input) external onlyPoolAdmin {
ILendingPool cachedPool = pool;
for (uint256 i = 0; i < input.length; i++) {
_initReserve(cachedPool, input[i]);
}
}
function _initReserve(ILendingPool pool, InitReserveInput calldata input) internal {
address aTokenProxyAddress =
_initTokenWithProxy(
input.aTokenImpl,
abi.encodeWithSelector(
IInitializableAToken.initialize.selector,
pool,
input.treasury,
input.underlyingAsset,
IAaveIncentivesController(input.incentivesController),
input.underlyingAssetDecimals,
input.aTokenName,
input.aTokenSymbol,
input.params
)
);
address stableDebtTokenProxyAddress =
_initTokenWithProxy(
input.stableDebtTokenImpl,
abi.encodeWithSelector(
IInitializableDebtToken.initialize.selector,
pool,
input.underlyingAsset,
IAaveIncentivesController(input.incentivesController),
input.underlyingAssetDecimals,
input.stableDebtTokenName,
input.stableDebtTokenSymbol,
input.params
)
);
address variableDebtTokenProxyAddress =
_initTokenWithProxy(
input.variableDebtTokenImpl,
abi.encodeWithSelector(
IInitializableDebtToken.initialize.selector,
pool,
input.underlyingAsset,
IAaveIncentivesController(input.incentivesController),
input.underlyingAssetDecimals,
input.variableDebtTokenName,
input.variableDebtTokenSymbol,
input.params
)
);
pool.initReserve(
input.underlyingAsset,
aTokenProxyAddress,
stableDebtTokenProxyAddress,
variableDebtTokenProxyAddress,
input.interestRateStrategyAddress
);
DataTypes.ReserveConfigurationMap memory currentConfig =
pool.getConfiguration(input.underlyingAsset);
currentConfig.setDecimals(input.underlyingAssetDecimals);
currentConfig.setActive(true);
currentConfig.setFrozen(false);
pool.setConfiguration(input.underlyingAsset, currentConfig.data);
emit ReserveInitialized(
input.underlyingAsset,
aTokenProxyAddress,
stableDebtTokenProxyAddress,
variableDebtTokenProxyAddress,
input.interestRateStrategyAddress
);
}
/**
* @dev Updates the aToken implementation for the reserve
**/
function updateAToken(UpdateATokenInput calldata input) external onlyPoolAdmin {
ILendingPool cachedPool = pool;
DataTypes.ReserveData memory reserveData = cachedPool.getReserveData(input.asset);
(, , , uint256 decimals, ) = cachedPool.getConfiguration(input.asset).getParamsMemory();
bytes memory encodedCall = abi.encodeWithSelector(
IInitializableAToken.initialize.selector,
cachedPool,
input.treasury,
input.asset,
input.incentivesController,
decimals,
input.name,
input.symbol,
input.params
);
_upgradeTokenImplementation(
reserveData.aTokenAddress,
input.implementation,
encodedCall
);
emit ATokenUpgraded(input.asset, reserveData.aTokenAddress, input.implementation);
}
/**
* @dev Updates the stable debt token implementation for the reserve
**/
function updateStableDebtToken(UpdateDebtTokenInput calldata input) external onlyPoolAdmin {
ILendingPool cachedPool = pool;
DataTypes.ReserveData memory reserveData = cachedPool.getReserveData(input.asset);
(, , , uint256 decimals, ) = cachedPool.getConfiguration(input.asset).getParamsMemory();
bytes memory encodedCall = abi.encodeWithSelector(
IInitializableDebtToken.initialize.selector,
cachedPool,
input.asset,
input.incentivesController,
decimals,
input.name,
input.symbol,
input.params
);
_upgradeTokenImplementation(
reserveData.stableDebtTokenAddress,
input.implementation,
encodedCall
);
emit StableDebtTokenUpgraded(
input.asset,
reserveData.stableDebtTokenAddress,
input.implementation
);
}
/**
* @dev Updates the variable debt token implementation for the asset
**/
function updateVariableDebtToken(UpdateDebtTokenInput calldata input)
external
onlyPoolAdmin
{
ILendingPool cachedPool = pool;
DataTypes.ReserveData memory reserveData = cachedPool.getReserveData(input.asset);
(, , , uint256 decimals, ) = cachedPool.getConfiguration(input.asset).getParamsMemory();
bytes memory encodedCall = abi.encodeWithSelector(
IInitializableDebtToken.initialize.selector,
cachedPool,
input.asset,
input.incentivesController,
decimals,
input.name,
input.symbol,
input.params
);
_upgradeTokenImplementation(
reserveData.variableDebtTokenAddress,
input.implementation,
encodedCall
);
emit VariableDebtTokenUpgraded(
input.asset,
reserveData.variableDebtTokenAddress,
input.implementation
);
}
/**
* @dev Enables borrowing on a reserve
* @param asset The address of the underlying asset of the reserve
* @param stableBorrowRateEnabled True if stable borrow rate needs to be enabled by default on this reserve
**/
function enableBorrowingOnReserve(address asset, bool stableBorrowRateEnabled)
external
onlyPoolAdmin
{
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setBorrowingEnabled(true);
currentConfig.setStableRateBorrowingEnabled(stableBorrowRateEnabled);
pool.setConfiguration(asset, currentConfig.data);
emit BorrowingEnabledOnReserve(asset, stableBorrowRateEnabled);
}
/**
* @dev Disables borrowing on a reserve
* @param asset The address of the underlying asset of the reserve
**/
function disableBorrowingOnReserve(address asset) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setBorrowingEnabled(false);
pool.setConfiguration(asset, currentConfig.data);
emit BorrowingDisabledOnReserve(asset);
}
/**
* @dev Configures the reserve collateralization parameters
* all the values are expressed in percentages with two decimals of precision. A valid value is 10000, which means 100.00%
* @param asset The address of the underlying asset of the reserve
* @param ltv The loan to value of the asset when used as collateral
* @param liquidationThreshold The threshold at which loans using this asset as collateral will be considered undercollateralized
* @param liquidationBonus The bonus liquidators receive to liquidate this asset. The values is always above 100%. A value of 105%
* means the liquidator will receive a 5% bonus
**/
function configureReserveAsCollateral(
address asset,
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus
) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
//validation of the parameters: the LTV can
//only be lower or equal than the liquidation threshold
//(otherwise a loan against the asset would cause instantaneous liquidation)
require(ltv <= liquidationThreshold, Errors.LPC_INVALID_CONFIGURATION);
if (liquidationThreshold != 0) {
//liquidation bonus must be bigger than 100.00%, otherwise the liquidator would receive less
//collateral than needed to cover the debt
require(
liquidationBonus > PercentageMath.PERCENTAGE_FACTOR,
Errors.LPC_INVALID_CONFIGURATION
);
//if threshold * bonus is less than PERCENTAGE_FACTOR, it's guaranteed that at the moment
//a loan is taken there is enough collateral available to cover the liquidation bonus
require(
liquidationThreshold.percentMul(liquidationBonus) <= PercentageMath.PERCENTAGE_FACTOR,
Errors.LPC_INVALID_CONFIGURATION
);
} else {
require(liquidationBonus == 0, Errors.LPC_INVALID_CONFIGURATION);
//if the liquidation threshold is being set to 0,
// the reserve is being disabled as collateral. To do so,
//we need to ensure no liquidity is deposited
_checkNoLiquidity(asset);
}
currentConfig.setLtv(ltv);
currentConfig.setLiquidationThreshold(liquidationThreshold);
currentConfig.setLiquidationBonus(liquidationBonus);
pool.setConfiguration(asset, currentConfig.data);
emit CollateralConfigurationChanged(asset, ltv, liquidationThreshold, liquidationBonus);
}
/**
* @dev Enable stable rate borrowing on a reserve
* @param asset The address of the underlying asset of the reserve
**/
function enableReserveStableRate(address asset) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setStableRateBorrowingEnabled(true);
pool.setConfiguration(asset, currentConfig.data);
emit StableRateEnabledOnReserve(asset);
}
/**
* @dev Disable stable rate borrowing on a reserve
* @param asset The address of the underlying asset of the reserve
**/
function disableReserveStableRate(address asset) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setStableRateBorrowingEnabled(false);
pool.setConfiguration(asset, currentConfig.data);
emit StableRateDisabledOnReserve(asset);
}
/**
* @dev Activates a reserve
* @param asset The address of the underlying asset of the reserve
**/
function activateReserve(address asset) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setActive(true);
pool.setConfiguration(asset, currentConfig.data);
emit ReserveActivated(asset);
}
/**
* @dev Deactivates a reserve
* @param asset The address of the underlying asset of the reserve
**/
function deactivateReserve(address asset) external onlyPoolAdmin {
_checkNoLiquidity(asset);
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setActive(false);
pool.setConfiguration(asset, currentConfig.data);
emit ReserveDeactivated(asset);
}
/**
* @dev Freezes a reserve. A frozen reserve doesn't allow any new deposit, borrow or rate swap
* but allows repayments, liquidations, rate rebalances and withdrawals
* @param asset The address of the underlying asset of the reserve
**/
function freezeReserve(address asset) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setFrozen(true);
pool.setConfiguration(asset, currentConfig.data);
emit ReserveFrozen(asset);
}
/**
* @dev Unfreezes a reserve
* @param asset The address of the underlying asset of the reserve
**/
function unfreezeReserve(address asset) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setFrozen(false);
pool.setConfiguration(asset, currentConfig.data);
emit ReserveUnfrozen(asset);
}
/**
* @dev Updates the reserve factor of a reserve
* @param asset The address of the underlying asset of the reserve
* @param reserveFactor The new reserve factor of the reserve
**/
function setReserveFactor(address asset, uint256 reserveFactor) external onlyPoolAdmin {
DataTypes.ReserveConfigurationMap memory currentConfig = pool.getConfiguration(asset);
currentConfig.setReserveFactor(reserveFactor);
pool.setConfiguration(asset, currentConfig.data);
emit ReserveFactorChanged(asset, reserveFactor);
}
/**
* @dev Sets the interest rate strategy of a reserve
* @param asset The address of the underlying asset of the reserve
* @param rateStrategyAddress The new address of the interest strategy contract
**/
function setReserveInterestRateStrategyAddress(address asset, address rateStrategyAddress)
external
onlyPoolAdmin
{
pool.setReserveInterestRateStrategyAddress(asset, rateStrategyAddress);
emit ReserveInterestRateStrategyChanged(asset, rateStrategyAddress);
}
/**
* @dev pauses or unpauses all the actions of the protocol, including aToken transfers
* @param val true if protocol needs to be paused, false otherwise
**/
function setPoolPause(bool val) external onlyEmergencyAdmin {
pool.setPause(val);
}
function _initTokenWithProxy(address implementation, bytes memory initParams)
internal
returns (address)
{
InitializableImmutableAdminUpgradeabilityProxy proxy =
new InitializableImmutableAdminUpgradeabilityProxy(address(this));
proxy.initialize(implementation, initParams);
return address(proxy);
}
function _upgradeTokenImplementation(
address proxyAddress,
address implementation,
bytes memory initParams
) internal {
InitializableImmutableAdminUpgradeabilityProxy proxy =
InitializableImmutableAdminUpgradeabilityProxy(payable(proxyAddress));
proxy.upgradeToAndCall(implementation, initParams);
}
function _checkNoLiquidity(address asset) internal view {
DataTypes.ReserveData memory reserveData = pool.getReserveData(asset);
uint256 availableLiquidity = IERC20Detailed(asset).balanceOf(reserveData.aTokenAddress);
require(
availableLiquidity == 0 && reserveData.currentLiquidityRate == 0,
Errors.LPC_RESERVE_LIQUIDITY_NOT_0
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './BaseImmutableAdminUpgradeabilityProxy.sol';
import '../../../dependencies/openzeppelin/upgradeability/InitializableUpgradeabilityProxy.sol';
/**
* @title InitializableAdminUpgradeabilityProxy
* @dev Extends BaseAdminUpgradeabilityProxy with an initializer function
*/
contract InitializableImmutableAdminUpgradeabilityProxy is
BaseImmutableAdminUpgradeabilityProxy,
InitializableUpgradeabilityProxy
{
constructor(address admin) public BaseImmutableAdminUpgradeabilityProxy(admin) {}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() internal override(BaseImmutableAdminUpgradeabilityProxy, Proxy) {
BaseImmutableAdminUpgradeabilityProxy._willFallback();
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
interface ILendingPoolConfigurator {
struct InitReserveInput {
address aTokenImpl;
address stableDebtTokenImpl;
address variableDebtTokenImpl;
uint8 underlyingAssetDecimals;
address interestRateStrategyAddress;
address underlyingAsset;
address treasury;
address incentivesController;
string underlyingAssetName;
string aTokenName;
string aTokenSymbol;
string variableDebtTokenName;
string variableDebtTokenSymbol;
string stableDebtTokenName;
string stableDebtTokenSymbol;
bytes params;
}
struct UpdateATokenInput {
address asset;
address treasury;
address incentivesController;
string name;
string symbol;
address implementation;
bytes params;
}
struct UpdateDebtTokenInput {
address asset;
address incentivesController;
string name;
string symbol;
address implementation;
bytes params;
}
/**
* @dev Emitted when a reserve is initialized.
* @param asset The address of the underlying asset of the reserve
* @param aToken The address of the associated aToken contract
* @param stableDebtToken The address of the associated stable rate debt token
* @param variableDebtToken The address of the associated variable rate debt token
* @param interestRateStrategyAddress The address of the interest rate strategy for the reserve
**/
event ReserveInitialized(
address indexed asset,
address indexed aToken,
address stableDebtToken,
address variableDebtToken,
address interestRateStrategyAddress
);
/**
* @dev Emitted when borrowing is enabled on a reserve
* @param asset The address of the underlying asset of the reserve
* @param stableRateEnabled True if stable rate borrowing is enabled, false otherwise
**/
event BorrowingEnabledOnReserve(address indexed asset, bool stableRateEnabled);
/**
* @dev Emitted when borrowing is disabled on a reserve
* @param asset The address of the underlying asset of the reserve
**/
event BorrowingDisabledOnReserve(address indexed asset);
/**
* @dev Emitted when the collateralization risk parameters for the specified asset are updated.
* @param asset The address of the underlying asset of the reserve
* @param ltv The loan to value of the asset when used as collateral
* @param liquidationThreshold The threshold at which loans using this asset as collateral will be considered undercollateralized
* @param liquidationBonus The bonus liquidators receive to liquidate this asset
**/
event CollateralConfigurationChanged(
address indexed asset,
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus
);
/**
* @dev Emitted when stable rate borrowing is enabled on a reserve
* @param asset The address of the underlying asset of the reserve
**/
event StableRateEnabledOnReserve(address indexed asset);
/**
* @dev Emitted when stable rate borrowing is disabled on a reserve
* @param asset The address of the underlying asset of the reserve
**/
event StableRateDisabledOnReserve(address indexed asset);
/**
* @dev Emitted when a reserve is activated
* @param asset The address of the underlying asset of the reserve
**/
event ReserveActivated(address indexed asset);
/**
* @dev Emitted when a reserve is deactivated
* @param asset The address of the underlying asset of the reserve
**/
event ReserveDeactivated(address indexed asset);
/**
* @dev Emitted when a reserve is frozen
* @param asset The address of the underlying asset of the reserve
**/
event ReserveFrozen(address indexed asset);
/**
* @dev Emitted when a reserve is unfrozen
* @param asset The address of the underlying asset of the reserve
**/
event ReserveUnfrozen(address indexed asset);
/**
* @dev Emitted when a reserve factor is updated
* @param asset The address of the underlying asset of the reserve
* @param factor The new reserve factor
**/
event ReserveFactorChanged(address indexed asset, uint256 factor);
/**
* @dev Emitted when the reserve decimals are updated
* @param asset The address of the underlying asset of the reserve
* @param decimals The new decimals
**/
event ReserveDecimalsChanged(address indexed asset, uint256 decimals);
/**
* @dev Emitted when a reserve interest strategy contract is updated
* @param asset The address of the underlying asset of the reserve
* @param strategy The new address of the interest strategy contract
**/
event ReserveInterestRateStrategyChanged(address indexed asset, address strategy);
/**
* @dev Emitted when an aToken implementation is upgraded
* @param asset The address of the underlying asset of the reserve
* @param proxy The aToken proxy address
* @param implementation The new aToken implementation
**/
event ATokenUpgraded(
address indexed asset,
address indexed proxy,
address indexed implementation
);
/**
* @dev Emitted when the implementation of a stable debt token is upgraded
* @param asset The address of the underlying asset of the reserve
* @param proxy The stable debt token proxy address
* @param implementation The new aToken implementation
**/
event StableDebtTokenUpgraded(
address indexed asset,
address indexed proxy,
address indexed implementation
);
/**
* @dev Emitted when the implementation of a variable debt token is upgraded
* @param asset The address of the underlying asset of the reserve
* @param proxy The variable debt token proxy address
* @param implementation The new aToken implementation
**/
event VariableDebtTokenUpgraded(
address indexed asset,
address indexed proxy,
address indexed implementation
);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import '../../../dependencies/openzeppelin/upgradeability/BaseUpgradeabilityProxy.sol';
/**
* @title BaseImmutableAdminUpgradeabilityProxy
* @author Aave, inspired by the OpenZeppelin upgradeability proxy pattern
* @dev This contract combines an upgradeability proxy with an authorization
* mechanism for administrative tasks. The admin role is stored in an immutable, which
* helps saving transactions costs
* All external functions in this contract must be guarded by the
* `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
* feature proposal that would enable this to be done automatically.
*/
contract BaseImmutableAdminUpgradeabilityProxy is BaseUpgradeabilityProxy {
address immutable ADMIN;
constructor(address admin) public {
ADMIN = admin;
}
modifier ifAdmin() {
if (msg.sender == ADMIN) {
_;
} else {
_fallback();
}
}
/**
* @return The address of the proxy admin.
*/
function admin() external ifAdmin returns (address) {
return ADMIN;
}
/**
* @return The address of the implementation.
*/
function implementation() external ifAdmin returns (address) {
return _implementation();
}
/**
* @dev Upgrade the backing implementation of the proxy.
* Only the admin can call this function.
* @param newImplementation Address of the new implementation.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the backing implementation of the proxy and call a function
* on the new implementation.
* This is useful to initialize the proxied contract.
* @param newImplementation Address of the new implementation.
* @param data Data to send as msg.data in the low level call.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data)
external
payable
ifAdmin
{
_upgradeTo(newImplementation);
(bool success, ) = newImplementation.delegatecall(data);
require(success);
}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() internal virtual override {
require(msg.sender != ADMIN, 'Cannot call fallback function from the proxy admin');
super._willFallback();
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './BaseUpgradeabilityProxy.sol';
/**
* @title InitializableUpgradeabilityProxy
* @dev Extends BaseUpgradeabilityProxy with an initializer for initializing
* implementation and init data.
*/
contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Contract initializer.
* @param _logic Address of the initial implementation.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
function initialize(address _logic, bytes memory _data) public payable {
require(_implementation() == address(0));
assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
_setImplementation(_logic);
if (_data.length > 0) {
(bool success, ) = _logic.delegatecall(_data);
require(success);
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './Proxy.sol';
import '../contracts/Address.sol';
/**
* @title BaseUpgradeabilityProxy
* @dev This contract implements a proxy that allows to change the
* implementation address to which it will delegate.
* Such a change is called an implementation upgrade.
*/
contract BaseUpgradeabilityProxy is Proxy {
/**
* @dev Emitted when the implementation is upgraded.
* @param implementation Address of the new implementation.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant IMPLEMENTATION_SLOT =
0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation.
* @return impl Address of the current implementation
*/
function _implementation() internal view override returns (address impl) {
bytes32 slot = IMPLEMENTATION_SLOT;
//solium-disable-next-line
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
* @param newImplementation Address of the new implementation.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Sets the implementation address of the proxy.
* @param newImplementation Address of the new implementation.
*/
function _setImplementation(address newImplementation) internal {
require(
Address.isContract(newImplementation),
'Cannot set a proxy implementation to a non-contract address'
);
bytes32 slot = IMPLEMENTATION_SLOT;
//solium-disable-next-line
assembly {
sstore(slot, newImplementation)
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.0;
/**
* @title Proxy
* @dev Implements delegation of calls to other contracts, with proper
* forwarding of return values and bubbling of failures.
* It defines a fallback function that delegates all calls to the address
* returned by the abstract _implementation() internal function.
*/
abstract contract Proxy {
/**
* @dev Fallback function.
* Implemented entirely in `_fallback`.
*/
fallback() external payable {
_fallback();
}
/**
* @return The Address of the implementation.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates execution to an implementation contract.
* This is a low level function that doesn't return to its internal call site.
* It will return to the external caller whatever the implementation returns.
* @param implementation Address to delegate.
*/
function _delegate(address implementation) internal {
//solium-disable-next-line
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
/**
* @dev Function that is run as the first thing in the fallback function.
* Can be redefined in derived contracts to add functionality.
* Redefinitions must call super._willFallback().
*/
function _willFallback() internal virtual {}
/**
* @dev fallback implementation.
* Extracted to enable manual triggering.
*/
function _fallback() internal {
_willFallback();
_delegate(_implementation());
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {IPriceOracleGetter} from '../interfaces/IPriceOracleGetter.sol';
import {IChainlinkAggregator} from '../interfaces/IChainlinkAggregator.sol';
import {SafeERC20} from '../dependencies/openzeppelin/contracts/SafeERC20.sol';
/// @title AaveOracle
/// @author Aave
/// @notice Proxy smart contract to get the price of an asset from a price source, with Chainlink Aggregator
/// smart contracts as primary option
/// - If the returned price by a Chainlink aggregator is <= 0, the call is forwarded to a fallbackOracle
/// - Owned by the Aave governance system, allowed to add sources for assets, replace them
/// and change the fallbackOracle
contract AaveOracle is IPriceOracleGetter, Ownable {
using SafeERC20 for IERC20;
event BaseCurrencySet(address indexed baseCurrency, uint256 baseCurrencyUnit);
event AssetSourceUpdated(address indexed asset, address indexed source);
event FallbackOracleUpdated(address indexed fallbackOracle);
mapping(address => IChainlinkAggregator) private assetsSources;
IPriceOracleGetter private _fallbackOracle;
address public immutable BASE_CURRENCY;
uint256 public immutable BASE_CURRENCY_UNIT;
/// @notice Constructor
/// @param assets The addresses of the assets
/// @param sources The address of the source of each asset
/// @param fallbackOracle The address of the fallback oracle to use if the data of an
/// aggregator is not consistent
/// @param baseCurrency the base currency used for the price quotes. If USD is used, base currency is 0x0
/// @param baseCurrencyUnit the unit of the base currency
constructor(
address[] memory assets,
address[] memory sources,
address fallbackOracle,
address baseCurrency,
uint256 baseCurrencyUnit
) public {
_setFallbackOracle(fallbackOracle);
_setAssetsSources(assets, sources);
BASE_CURRENCY = baseCurrency;
BASE_CURRENCY_UNIT = baseCurrencyUnit;
emit BaseCurrencySet(baseCurrency, baseCurrencyUnit);
}
/// @notice External function called by the Aave governance to set or replace sources of assets
/// @param assets The addresses of the assets
/// @param sources The address of the source of each asset
function setAssetSources(address[] calldata assets, address[] calldata sources)
external
onlyOwner
{
_setAssetsSources(assets, sources);
}
/// @notice Sets the fallbackOracle
/// - Callable only by the Aave governance
/// @param fallbackOracle The address of the fallbackOracle
function setFallbackOracle(address fallbackOracle) external onlyOwner {
_setFallbackOracle(fallbackOracle);
}
/// @notice Internal function to set the sources for each asset
/// @param assets The addresses of the assets
/// @param sources The address of the source of each asset
function _setAssetsSources(address[] memory assets, address[] memory sources) internal {
require(assets.length == sources.length, 'INCONSISTENT_PARAMS_LENGTH');
for (uint256 i = 0; i < assets.length; i++) {
assetsSources[assets[i]] = IChainlinkAggregator(sources[i]);
emit AssetSourceUpdated(assets[i], sources[i]);
}
}
/// @notice Internal function to set the fallbackOracle
/// @param fallbackOracle The address of the fallbackOracle
function _setFallbackOracle(address fallbackOracle) internal {
_fallbackOracle = IPriceOracleGetter(fallbackOracle);
emit FallbackOracleUpdated(fallbackOracle);
}
/// @notice Gets an asset price by address
/// @param asset The asset address
function getAssetPrice(address asset) public view override returns (uint256) {
IChainlinkAggregator source = assetsSources[asset];
if (asset == BASE_CURRENCY) {
return BASE_CURRENCY_UNIT;
} else if (address(source) == address(0)) {
return _fallbackOracle.getAssetPrice(asset);
} else {
int256 price = IChainlinkAggregator(source).latestAnswer();
if (price > 0) {
return uint256(price);
} else {
return _fallbackOracle.getAssetPrice(asset);
}
}
}
/// @notice Gets a list of prices from a list of assets addresses
/// @param assets The list of assets addresses
function getAssetsPrices(address[] calldata assets) external view returns (uint256[] memory) {
uint256[] memory prices = new uint256[](assets.length);
for (uint256 i = 0; i < assets.length; i++) {
prices[i] = getAssetPrice(assets[i]);
}
return prices;
}
/// @notice Gets the address of the source for an asset address
/// @param asset The address of the asset
/// @return address The address of the source
function getSourceOfAsset(address asset) external view returns (address) {
return address(assetsSources[asset]);
}
/// @notice Gets the address of the fallback oracle
/// @return address The addres of the fallback oracle
function getFallbackOracle() external view returns (address) {
return address(_fallbackOracle);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
interface IChainlinkAggregator {
function latestAnswer() external view returns (int256);
function latestTimestamp() external view returns (uint256);
function latestRound() external view returns (uint256);
function getAnswer(uint256 roundId) external view returns (int256);
function getTimestamp(uint256 roundId) external view returns (uint256);
event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 timestamp);
event NewRound(uint256 indexed roundId, address indexed startedBy);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {BaseUniswapAdapter} from './BaseUniswapAdapter.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {IUniswapV2Router02} from '../interfaces/IUniswapV2Router02.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
import {DataTypes} from '../protocol/libraries/types/DataTypes.sol';
import {Helpers} from '../protocol/libraries/helpers/Helpers.sol';
import {IPriceOracleGetter} from '../interfaces/IPriceOracleGetter.sol';
import {IAToken} from '../interfaces/IAToken.sol';
import {ReserveConfiguration} from '../protocol/libraries/configuration/ReserveConfiguration.sol';
/**
* @title UniswapLiquiditySwapAdapter
* @notice Uniswap V2 Adapter to swap liquidity.
* @author Aave
**/
contract FlashLiquidationAdapter is BaseUniswapAdapter {
using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
uint256 internal constant LIQUIDATION_CLOSE_FACTOR_PERCENT = 5000;
struct LiquidationParams {
address collateralAsset;
address borrowedAsset;
address user;
uint256 debtToCover;
bool useEthPath;
}
struct LiquidationCallLocalVars {
uint256 initFlashBorrowedBalance;
uint256 diffFlashBorrowedBalance;
uint256 initCollateralBalance;
uint256 diffCollateralBalance;
uint256 flashLoanDebt;
uint256 soldAmount;
uint256 remainingTokens;
uint256 borrowedAssetLeftovers;
}
constructor(
ILendingPoolAddressesProvider addressesProvider,
IUniswapV2Router02 uniswapRouter,
address wethAddress
) public BaseUniswapAdapter(addressesProvider, uniswapRouter, wethAddress) {}
/**
* @dev Liquidate a non-healthy position collateral-wise, with a Health Factor below 1, using Flash Loan and Uniswap to repay flash loan premium.
* - The caller (liquidator) with a flash loan covers `debtToCover` amount of debt of the user getting liquidated, and receives
* a proportionally amount of the `collateralAsset` plus a bonus to cover market risk minus the flash loan premium.
* @param assets Address of asset to be swapped
* @param amounts Amount of the asset to be swapped
* @param premiums Fee of the flash loan
* @param initiator Address of the caller
* @param params Additional variadic field to include extra params. Expected parameters:
* address collateralAsset The collateral asset to release and will be exchanged to pay the flash loan premium
* address borrowedAsset The asset that must be covered
* address user The user address with a Health Factor below 1
* uint256 debtToCover The amount of debt to cover
* bool useEthPath Use WETH as connector path between the collateralAsset and borrowedAsset at Uniswap
*/
function executeOperation(
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata premiums,
address initiator,
bytes calldata params
) external override returns (bool) {
require(msg.sender == address(LENDING_POOL), 'CALLER_MUST_BE_LENDING_POOL');
LiquidationParams memory decodedParams = _decodeParams(params);
require(assets.length == 1 && assets[0] == decodedParams.borrowedAsset, 'INCONSISTENT_PARAMS');
_liquidateAndSwap(
decodedParams.collateralAsset,
decodedParams.borrowedAsset,
decodedParams.user,
decodedParams.debtToCover,
decodedParams.useEthPath,
amounts[0],
premiums[0],
initiator
);
return true;
}
/**
* @dev
* @param collateralAsset The collateral asset to release and will be exchanged to pay the flash loan premium
* @param borrowedAsset The asset that must be covered
* @param user The user address with a Health Factor below 1
* @param debtToCover The amount of debt to coverage, can be max(-1) to liquidate all possible debt
* @param useEthPath true if the swap needs to occur using ETH in the routing, false otherwise
* @param flashBorrowedAmount Amount of asset requested at the flash loan to liquidate the user position
* @param premium Fee of the requested flash loan
* @param initiator Address of the caller
*/
function _liquidateAndSwap(
address collateralAsset,
address borrowedAsset,
address user,
uint256 debtToCover,
bool useEthPath,
uint256 flashBorrowedAmount,
uint256 premium,
address initiator
) internal {
LiquidationCallLocalVars memory vars;
vars.initCollateralBalance = IERC20(collateralAsset).balanceOf(address(this));
if (collateralAsset != borrowedAsset) {
vars.initFlashBorrowedBalance = IERC20(borrowedAsset).balanceOf(address(this));
// Track leftover balance to rescue funds in case of external transfers into this contract
vars.borrowedAssetLeftovers = vars.initFlashBorrowedBalance.sub(flashBorrowedAmount);
}
vars.flashLoanDebt = flashBorrowedAmount.add(premium);
// Approve LendingPool to use debt token for liquidation
IERC20(borrowedAsset).approve(address(LENDING_POOL), debtToCover);
// Liquidate the user position and release the underlying collateral
LENDING_POOL.liquidationCall(collateralAsset, borrowedAsset, user, debtToCover, false);
// Discover the liquidated tokens
uint256 collateralBalanceAfter = IERC20(collateralAsset).balanceOf(address(this));
// Track only collateral released, not current asset balance of the contract
vars.diffCollateralBalance = collateralBalanceAfter.sub(vars.initCollateralBalance);
if (collateralAsset != borrowedAsset) {
// Discover flash loan balance after the liquidation
uint256 flashBorrowedAssetAfter = IERC20(borrowedAsset).balanceOf(address(this));
// Use only flash loan borrowed assets, not current asset balance of the contract
vars.diffFlashBorrowedBalance = flashBorrowedAssetAfter.sub(vars.borrowedAssetLeftovers);
// Swap released collateral into the debt asset, to repay the flash loan
vars.soldAmount = _swapTokensForExactTokens(
collateralAsset,
borrowedAsset,
vars.diffCollateralBalance,
vars.flashLoanDebt.sub(vars.diffFlashBorrowedBalance),
useEthPath
);
vars.remainingTokens = vars.diffCollateralBalance.sub(vars.soldAmount);
} else {
vars.remainingTokens = vars.diffCollateralBalance.sub(premium);
}
// Allow repay of flash loan
IERC20(borrowedAsset).approve(address(LENDING_POOL), vars.flashLoanDebt);
// Transfer remaining tokens to initiator
if (vars.remainingTokens > 0) {
IERC20(collateralAsset).transfer(initiator, vars.remainingTokens);
}
}
/**
* @dev Decodes the information encoded in the flash loan params
* @param params Additional variadic field to include extra params. Expected parameters:
* address collateralAsset The collateral asset to claim
* address borrowedAsset The asset that must be covered and will be exchanged to pay the flash loan premium
* address user The user address with a Health Factor below 1
* uint256 debtToCover The amount of debt to cover
* bool useEthPath Use WETH as connector path between the collateralAsset and borrowedAsset at Uniswap
* @return LiquidationParams struct containing decoded params
*/
function _decodeParams(bytes memory params) internal pure returns (LiquidationParams memory) {
(
address collateralAsset,
address borrowedAsset,
address user,
uint256 debtToCover,
bool useEthPath
) = abi.decode(params, (address, address, address, uint256, bool));
return LiquidationParams(collateralAsset, borrowedAsset, user, debtToCover, useEthPath);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {BaseUniswapAdapter} from './BaseUniswapAdapter.sol';
import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
import {IUniswapV2Router02} from '../interfaces/IUniswapV2Router02.sol';
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
/**
* @title UniswapLiquiditySwapAdapter
* @notice Uniswap V2 Adapter to swap liquidity.
* @author Aave
**/
contract UniswapLiquiditySwapAdapter is BaseUniswapAdapter {
struct PermitParams {
uint256[] amount;
uint256[] deadline;
uint8[] v;
bytes32[] r;
bytes32[] s;
}
struct SwapParams {
address[] assetToSwapToList;
uint256[] minAmountsToReceive;
bool[] swapAllBalance;
PermitParams permitParams;
bool[] useEthPath;
}
constructor(
ILendingPoolAddressesProvider addressesProvider,
IUniswapV2Router02 uniswapRouter,
address wethAddress
) public BaseUniswapAdapter(addressesProvider, uniswapRouter, wethAddress) {}
/**
* @dev Swaps the received reserve amount from the flash loan into the asset specified in the params.
* The received funds from the swap are then deposited into the protocol on behalf of the user.
* The user should give this contract allowance to pull the ATokens in order to withdraw the underlying asset and
* repay the flash loan.
* @param assets Address of asset to be swapped
* @param amounts Amount of the asset to be swapped
* @param premiums Fee of the flash loan
* @param initiator Address of the user
* @param params Additional variadic field to include extra params. Expected parameters:
* address[] assetToSwapToList List of the addresses of the reserve to be swapped to and deposited
* uint256[] minAmountsToReceive List of min amounts to be received from the swap
* bool[] swapAllBalance Flag indicating if all the user balance should be swapped
* uint256[] permitAmount List of amounts for the permit signature
* uint256[] deadline List of deadlines for the permit signature
* uint8[] v List of v param for the permit signature
* bytes32[] r List of r param for the permit signature
* bytes32[] s List of s param for the permit signature
*/
function executeOperation(
address[] calldata assets,
uint256[] calldata amounts,
uint256[] calldata premiums,
address initiator,
bytes calldata params
) external override returns (bool) {
require(msg.sender == address(LENDING_POOL), 'CALLER_MUST_BE_LENDING_POOL');
SwapParams memory decodedParams = _decodeParams(params);
require(
assets.length == decodedParams.assetToSwapToList.length &&
assets.length == decodedParams.minAmountsToReceive.length &&
assets.length == decodedParams.swapAllBalance.length &&
assets.length == decodedParams.permitParams.amount.length &&
assets.length == decodedParams.permitParams.deadline.length &&
assets.length == decodedParams.permitParams.v.length &&
assets.length == decodedParams.permitParams.r.length &&
assets.length == decodedParams.permitParams.s.length &&
assets.length == decodedParams.useEthPath.length,
'INCONSISTENT_PARAMS'
);
for (uint256 i = 0; i < assets.length; i++) {
_swapLiquidity(
assets[i],
decodedParams.assetToSwapToList[i],
amounts[i],
premiums[i],
initiator,
decodedParams.minAmountsToReceive[i],
decodedParams.swapAllBalance[i],
PermitSignature(
decodedParams.permitParams.amount[i],
decodedParams.permitParams.deadline[i],
decodedParams.permitParams.v[i],
decodedParams.permitParams.r[i],
decodedParams.permitParams.s[i]
),
decodedParams.useEthPath[i]
);
}
return true;
}
struct SwapAndDepositLocalVars {
uint256 i;
uint256 aTokenInitiatorBalance;
uint256 amountToSwap;
uint256 receivedAmount;
address aToken;
}
/**
* @dev Swaps an amount of an asset to another and deposits the new asset amount on behalf of the user without using
* a flash loan. This method can be used when the temporary transfer of the collateral asset to this contract
* does not affect the user position.
* The user should give this contract allowance to pull the ATokens in order to withdraw the underlying asset and
* perform the swap.
* @param assetToSwapFromList List of addresses of the underlying asset to be swap from
* @param assetToSwapToList List of addresses of the underlying asset to be swap to and deposited
* @param amountToSwapList List of amounts to be swapped. If the amount exceeds the balance, the total balance is used for the swap
* @param minAmountsToReceive List of min amounts to be received from the swap
* @param permitParams List of struct containing the permit signatures
* uint256 permitAmount Amount for the permit signature
* uint256 deadline Deadline for the permit signature
* uint8 v param for the permit signature
* bytes32 r param for the permit signature
* bytes32 s param for the permit signature
* @param useEthPath true if the swap needs to occur using ETH in the routing, false otherwise
*/
function swapAndDeposit(
address[] calldata assetToSwapFromList,
address[] calldata assetToSwapToList,
uint256[] calldata amountToSwapList,
uint256[] calldata minAmountsToReceive,
PermitSignature[] calldata permitParams,
bool[] calldata useEthPath
) external {
require(
assetToSwapFromList.length == assetToSwapToList.length &&
assetToSwapFromList.length == amountToSwapList.length &&
assetToSwapFromList.length == minAmountsToReceive.length &&
assetToSwapFromList.length == permitParams.length,
'INCONSISTENT_PARAMS'
);
SwapAndDepositLocalVars memory vars;
for (vars.i = 0; vars.i < assetToSwapFromList.length; vars.i++) {
vars.aToken = _getReserveData(assetToSwapFromList[vars.i]).aTokenAddress;
vars.aTokenInitiatorBalance = IERC20(vars.aToken).balanceOf(msg.sender);
vars.amountToSwap = amountToSwapList[vars.i] > vars.aTokenInitiatorBalance
? vars.aTokenInitiatorBalance
: amountToSwapList[vars.i];
_pullAToken(
assetToSwapFromList[vars.i],
vars.aToken,
msg.sender,
vars.amountToSwap,
permitParams[vars.i]
);
vars.receivedAmount = _swapExactTokensForTokens(
assetToSwapFromList[vars.i],
assetToSwapToList[vars.i],
vars.amountToSwap,
minAmountsToReceive[vars.i],
useEthPath[vars.i]
);
// Deposit new reserve
IERC20(assetToSwapToList[vars.i]).safeApprove(address(LENDING_POOL), 0);
IERC20(assetToSwapToList[vars.i]).safeApprove(address(LENDING_POOL), vars.receivedAmount);
LENDING_POOL.deposit(assetToSwapToList[vars.i], vars.receivedAmount, msg.sender, 0);
}
}
/**
* @dev Swaps an `amountToSwap` of an asset to another and deposits the funds on behalf of the initiator.
* @param assetFrom Address of the underlying asset to be swap from
* @param assetTo Address of the underlying asset to be swap to and deposited
* @param amount Amount from flash loan
* @param premium Premium of the flash loan
* @param minAmountToReceive Min amount to be received from the swap
* @param swapAllBalance Flag indicating if all the user balance should be swapped
* @param permitSignature List of struct containing the permit signature
* @param useEthPath true if the swap needs to occur using ETH in the routing, false otherwise
*/
struct SwapLiquidityLocalVars {
address aToken;
uint256 aTokenInitiatorBalance;
uint256 amountToSwap;
uint256 receivedAmount;
uint256 flashLoanDebt;
uint256 amountToPull;
}
function _swapLiquidity(
address assetFrom,
address assetTo,
uint256 amount,
uint256 premium,
address initiator,
uint256 minAmountToReceive,
bool swapAllBalance,
PermitSignature memory permitSignature,
bool useEthPath
) internal {
SwapLiquidityLocalVars memory vars;
vars.aToken = _getReserveData(assetFrom).aTokenAddress;
vars.aTokenInitiatorBalance = IERC20(vars.aToken).balanceOf(initiator);
vars.amountToSwap = swapAllBalance && vars.aTokenInitiatorBalance.sub(premium) <= amount
? vars.aTokenInitiatorBalance.sub(premium)
: amount;
vars.receivedAmount = _swapExactTokensForTokens(
assetFrom,
assetTo,
vars.amountToSwap,
minAmountToReceive,
useEthPath
);
// Deposit new reserve
IERC20(assetTo).safeApprove(address(LENDING_POOL), 0);
IERC20(assetTo).safeApprove(address(LENDING_POOL), vars.receivedAmount);
LENDING_POOL.deposit(assetTo, vars.receivedAmount, initiator, 0);
vars.flashLoanDebt = amount.add(premium);
vars.amountToPull = vars.amountToSwap.add(premium);
_pullAToken(assetFrom, vars.aToken, initiator, vars.amountToPull, permitSignature);
// Repay flash loan
IERC20(assetFrom).safeApprove(address(LENDING_POOL), 0);
IERC20(assetFrom).safeApprove(address(LENDING_POOL), vars.flashLoanDebt);
}
/**
* @dev Decodes the information encoded in the flash loan params
* @param params Additional variadic field to include extra params. Expected parameters:
* address[] assetToSwapToList List of the addresses of the reserve to be swapped to and deposited
* uint256[] minAmountsToReceive List of min amounts to be received from the swap
* bool[] swapAllBalance Flag indicating if all the user balance should be swapped
* uint256[] permitAmount List of amounts for the permit signature
* uint256[] deadline List of deadlines for the permit signature
* uint8[] v List of v param for the permit signature
* bytes32[] r List of r param for the permit signature
* bytes32[] s List of s param for the permit signature
* bool[] useEthPath true if the swap needs to occur using ETH in the routing, false otherwise
* @return SwapParams struct containing decoded params
*/
function _decodeParams(bytes memory params) internal pure returns (SwapParams memory) {
(
address[] memory assetToSwapToList,
uint256[] memory minAmountsToReceive,
bool[] memory swapAllBalance,
uint256[] memory permitAmount,
uint256[] memory deadline,
uint8[] memory v,
bytes32[] memory r,
bytes32[] memory s,
bool[] memory useEthPath
) =
abi.decode(
params,
(address[], uint256[], bool[], uint256[], uint256[], uint8[], bytes32[], bytes32[], bool[])
);
return
SwapParams(
assetToSwapToList,
minAmountsToReceive,
swapAllBalance,
PermitParams(permitAmount, deadline, v, r, s),
useEthPath
);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {DebtTokenBase} from './base/DebtTokenBase.sol';
import {MathUtils} from '../libraries/math/MathUtils.sol';
import {WadRayMath} from '../libraries/math/WadRayMath.sol';
import {IStableDebtToken} from '../../interfaces/IStableDebtToken.sol';
import {ILendingPool} from '../../interfaces/ILendingPool.sol';
import {IAaveIncentivesController} from '../../interfaces/IAaveIncentivesController.sol';
import {Errors} from '../libraries/helpers/Errors.sol';
/**
* @title StableDebtToken
* @notice Implements a stable debt token to track the borrowing positions of users
* at stable rate mode
* @author Aave
**/
contract StableDebtToken is IStableDebtToken, DebtTokenBase {
using WadRayMath for uint256;
uint256 public constant DEBT_TOKEN_REVISION = 0x1;
uint256 internal _avgStableRate;
mapping(address => uint40) internal _timestamps;
mapping(address => uint256) internal _usersStableRate;
uint40 internal _totalSupplyTimestamp;
ILendingPool internal _pool;
address internal _underlyingAsset;
IAaveIncentivesController internal _incentivesController;
/**
* @dev Initializes the debt token.
* @param pool The address of the lending pool where this aToken will be used
* @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
* @param incentivesController The smart contract managing potential incentives distribution
* @param debtTokenDecimals The decimals of the debtToken, same as the underlying asset's
* @param debtTokenName The name of the token
* @param debtTokenSymbol The symbol of the token
*/
function initialize(
ILendingPool pool,
address underlyingAsset,
IAaveIncentivesController incentivesController,
uint8 debtTokenDecimals,
string memory debtTokenName,
string memory debtTokenSymbol,
bytes calldata params
) public override initializer {
_setName(debtTokenName);
_setSymbol(debtTokenSymbol);
_setDecimals(debtTokenDecimals);
_pool = pool;
_underlyingAsset = underlyingAsset;
_incentivesController = incentivesController;
emit Initialized(
underlyingAsset,
address(pool),
address(incentivesController),
debtTokenDecimals,
debtTokenName,
debtTokenSymbol,
params
);
}
/**
* @dev Gets the revision of the stable debt token implementation
* @return The debt token implementation revision
**/
function getRevision() internal pure virtual override returns (uint256) {
return DEBT_TOKEN_REVISION;
}
/**
* @dev Returns the average stable rate across all the stable rate debt
* @return the average stable rate
**/
function getAverageStableRate() external view virtual override returns (uint256) {
return _avgStableRate;
}
/**
* @dev Returns the timestamp of the last user action
* @return The last update timestamp
**/
function getUserLastUpdated(address user) external view virtual override returns (uint40) {
return _timestamps[user];
}
/**
* @dev Returns the stable rate of the user
* @param user The address of the user
* @return The stable rate of user
**/
function getUserStableRate(address user) external view virtual override returns (uint256) {
return _usersStableRate[user];
}
/**
* @dev Calculates the current user debt balance
* @return The accumulated debt of the user
**/
function balanceOf(address account) public view virtual override returns (uint256) {
uint256 accountBalance = super.balanceOf(account);
uint256 stableRate = _usersStableRate[account];
if (accountBalance == 0) {
return 0;
}
uint256 cumulatedInterest =
MathUtils.calculateCompoundedInterest(stableRate, _timestamps[account]);
return accountBalance.rayMul(cumulatedInterest);
}
struct MintLocalVars {
uint256 previousSupply;
uint256 nextSupply;
uint256 amountInRay;
uint256 newStableRate;
uint256 currentAvgStableRate;
}
/**
* @dev Mints debt token to the `onBehalfOf` address.
* - Only callable by the LendingPool
* - The resulting rate is the weighted average between the rate of the new debt
* and the rate of the previous debt
* @param user The address receiving the borrowed underlying, being the delegatee in case
* of credit delegate, or same as `onBehalfOf` otherwise
* @param onBehalfOf The address receiving the debt tokens
* @param amount The amount of debt tokens to mint
* @param rate The rate of the debt being minted
**/
function mint(
address user,
address onBehalfOf,
uint256 amount,
uint256 rate
) external override onlyLendingPool returns (bool) {
MintLocalVars memory vars;
if (user != onBehalfOf) {
_decreaseBorrowAllowance(onBehalfOf, user, amount);
}
(, uint256 currentBalance, uint256 balanceIncrease) = _calculateBalanceIncrease(onBehalfOf);
vars.previousSupply = totalSupply();
vars.currentAvgStableRate = _avgStableRate;
vars.nextSupply = _totalSupply = vars.previousSupply.add(amount);
vars.amountInRay = amount.wadToRay();
vars.newStableRate = _usersStableRate[onBehalfOf]
.rayMul(currentBalance.wadToRay())
.add(vars.amountInRay.rayMul(rate))
.rayDiv(currentBalance.add(amount).wadToRay());
require(vars.newStableRate <= type(uint128).max, Errors.SDT_STABLE_DEBT_OVERFLOW);
_usersStableRate[onBehalfOf] = vars.newStableRate;
//solium-disable-next-line
_totalSupplyTimestamp = _timestamps[onBehalfOf] = uint40(block.timestamp);
// Calculates the updated average stable rate
vars.currentAvgStableRate = _avgStableRate = vars
.currentAvgStableRate
.rayMul(vars.previousSupply.wadToRay())
.add(rate.rayMul(vars.amountInRay))
.rayDiv(vars.nextSupply.wadToRay());
_mint(onBehalfOf, amount.add(balanceIncrease), vars.previousSupply);
emit Transfer(address(0), onBehalfOf, amount);
emit Mint(
user,
onBehalfOf,
amount,
currentBalance,
balanceIncrease,
vars.newStableRate,
vars.currentAvgStableRate,
vars.nextSupply
);
return currentBalance == 0;
}
/**
* @dev Burns debt of `user`
* @param user The address of the user getting his debt burned
* @param amount The amount of debt tokens getting burned
**/
function burn(address user, uint256 amount) external override onlyLendingPool {
(, uint256 currentBalance, uint256 balanceIncrease) = _calculateBalanceIncrease(user);
uint256 previousSupply = totalSupply();
uint256 newAvgStableRate = 0;
uint256 nextSupply = 0;
uint256 userStableRate = _usersStableRate[user];
// Since the total supply and each single user debt accrue separately,
// there might be accumulation errors so that the last borrower repaying
// mght actually try to repay more than the available debt supply.
// In this case we simply set the total supply and the avg stable rate to 0
if (previousSupply <= amount) {
_avgStableRate = 0;
_totalSupply = 0;
} else {
nextSupply = _totalSupply = previousSupply.sub(amount);
uint256 firstTerm = _avgStableRate.rayMul(previousSupply.wadToRay());
uint256 secondTerm = userStableRate.rayMul(amount.wadToRay());
// For the same reason described above, when the last user is repaying it might
// happen that user rate * user balance > avg rate * total supply. In that case,
// we simply set the avg rate to 0
if (secondTerm >= firstTerm) {
newAvgStableRate = _avgStableRate = _totalSupply = 0;
} else {
newAvgStableRate = _avgStableRate = firstTerm.sub(secondTerm).rayDiv(nextSupply.wadToRay());
}
}
if (amount == currentBalance) {
_usersStableRate[user] = 0;
_timestamps[user] = 0;
} else {
//solium-disable-next-line
_timestamps[user] = uint40(block.timestamp);
}
//solium-disable-next-line
_totalSupplyTimestamp = uint40(block.timestamp);
if (balanceIncrease > amount) {
uint256 amountToMint = balanceIncrease.sub(amount);
_mint(user, amountToMint, previousSupply);
emit Mint(
user,
user,
amountToMint,
currentBalance,
balanceIncrease,
userStableRate,
newAvgStableRate,
nextSupply
);
} else {
uint256 amountToBurn = amount.sub(balanceIncrease);
_burn(user, amountToBurn, previousSupply);
emit Burn(user, amountToBurn, currentBalance, balanceIncrease, newAvgStableRate, nextSupply);
}
emit Transfer(user, address(0), amount);
}
/**
* @dev Calculates the increase in balance since the last user interaction
* @param user The address of the user for which the interest is being accumulated
* @return The previous principal balance, the new principal balance and the balance increase
**/
function _calculateBalanceIncrease(address user)
internal
view
returns (
uint256,
uint256,
uint256
)
{
uint256 previousPrincipalBalance = super.balanceOf(user);
if (previousPrincipalBalance == 0) {
return (0, 0, 0);
}
// Calculation of the accrued interest since the last accumulation
uint256 balanceIncrease = balanceOf(user).sub(previousPrincipalBalance);
return (
previousPrincipalBalance,
previousPrincipalBalance.add(balanceIncrease),
balanceIncrease
);
}
/**
* @dev Returns the principal and total supply, the average borrow rate and the last supply update timestamp
**/
function getSupplyData()
public
view
override
returns (
uint256,
uint256,
uint256,
uint40
)
{
uint256 avgRate = _avgStableRate;
return (super.totalSupply(), _calcTotalSupply(avgRate), avgRate, _totalSupplyTimestamp);
}
/**
* @dev Returns the the total supply and the average stable rate
**/
function getTotalSupplyAndAvgRate() public view override returns (uint256, uint256) {
uint256 avgRate = _avgStableRate;
return (_calcTotalSupply(avgRate), avgRate);
}
/**
* @dev Returns the total supply
**/
function totalSupply() public view override returns (uint256) {
return _calcTotalSupply(_avgStableRate);
}
/**
* @dev Returns the timestamp at which the total supply was updated
**/
function getTotalSupplyLastUpdated() public view override returns (uint40) {
return _totalSupplyTimestamp;
}
/**
* @dev Returns the principal debt balance of the user from
* @param user The user's address
* @return The debt balance of the user since the last burn/mint action
**/
function principalBalanceOf(address user) external view virtual override returns (uint256) {
return super.balanceOf(user);
}
/**
* @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
**/
function UNDERLYING_ASSET_ADDRESS() public view returns (address) {
return _underlyingAsset;
}
/**
* @dev Returns the address of the lending pool where this aToken is used
**/
function POOL() public view returns (ILendingPool) {
return _pool;
}
/**
* @dev Returns the address of the incentives controller contract
**/
function getIncentivesController() external view override returns (IAaveIncentivesController) {
return _getIncentivesController();
}
/**
* @dev For internal usage in the logic of the parent contracts
**/
function _getIncentivesController() internal view override returns (IAaveIncentivesController) {
return _incentivesController;
}
/**
* @dev For internal usage in the logic of the parent contracts
**/
function _getUnderlyingAssetAddress() internal view override returns (address) {
return _underlyingAsset;
}
/**
* @dev For internal usage in the logic of the parent contracts
**/
function _getLendingPool() internal view override returns (ILendingPool) {
return _pool;
}
/**
* @dev Calculates the total supply
* @param avgRate The average rate at which the total supply increases
* @return The debt balance of the user since the last burn/mint action
**/
function _calcTotalSupply(uint256 avgRate) internal view virtual returns (uint256) {
uint256 principalSupply = super.totalSupply();
if (principalSupply == 0) {
return 0;
}
uint256 cumulatedInterest =
MathUtils.calculateCompoundedInterest(avgRate, _totalSupplyTimestamp);
return principalSupply.rayMul(cumulatedInterest);
}
/**
* @dev Mints stable debt tokens to an user
* @param account The account receiving the debt tokens
* @param amount The amount being minted
* @param oldTotalSupply the total supply before the minting event
**/
function _mint(
address account,
uint256 amount,
uint256 oldTotalSupply
) internal {
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.add(amount);
if (address(_incentivesController) != address(0)) {
_incentivesController.handleAction(account, oldTotalSupply, oldAccountBalance);
}
}
/**
* @dev Burns stable debt tokens of an user
* @param account The user getting his debt burned
* @param amount The amount being burned
* @param oldTotalSupply The total supply before the burning event
**/
function _burn(
address account,
uint256 amount,
uint256 oldTotalSupply
) internal {
uint256 oldAccountBalance = _balances[account];
_balances[account] = oldAccountBalance.sub(amount, Errors.SDT_BURN_EXCEEDS_BALANCE);
if (address(_incentivesController) != address(0)) {
_incentivesController.handleAction(account, oldTotalSupply, oldAccountBalance);
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {StableDebtToken} from '../../protocol/tokenization/StableDebtToken.sol';
contract MockStableDebtToken is StableDebtToken {
function getRevision() internal pure override returns (uint256) {
return 0x2;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {StableDebtToken} from '../protocol/tokenization/StableDebtToken.sol';
import {VariableDebtToken} from '../protocol/tokenization/VariableDebtToken.sol';
import {LendingRateOracle} from '../mocks/oracle/LendingRateOracle.sol';
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {StringLib} from './StringLib.sol';
contract StableAndVariableTokensHelper is Ownable {
address payable private pool;
address private addressesProvider;
event deployedContracts(address stableToken, address variableToken);
constructor(address payable _pool, address _addressesProvider) public {
pool = _pool;
addressesProvider = _addressesProvider;
}
function initDeployment(address[] calldata tokens, string[] calldata symbols) external onlyOwner {
require(tokens.length == symbols.length, 'Arrays not same length');
require(pool != address(0), 'Pool can not be zero address');
for (uint256 i = 0; i < tokens.length; i++) {
emit deployedContracts(address(new StableDebtToken()), address(new VariableDebtToken()));
}
}
function setOracleBorrowRates(
address[] calldata assets,
uint256[] calldata rates,
address oracle
) external onlyOwner {
require(assets.length == rates.length, 'Arrays not same length');
for (uint256 i = 0; i < assets.length; i++) {
// LendingRateOracle owner must be this contract
LendingRateOracle(oracle).setMarketBorrowRate(assets[i], rates[i]);
}
}
function setOracleOwnership(address oracle, address admin) external onlyOwner {
require(admin != address(0), 'owner can not be zero');
require(LendingRateOracle(oracle).owner() == address(this), 'helper is not owner');
LendingRateOracle(oracle).transferOwnership(admin);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ILendingRateOracle} from '../../interfaces/ILendingRateOracle.sol';
import {Ownable} from '../../dependencies/openzeppelin/contracts/Ownable.sol';
contract LendingRateOracle is ILendingRateOracle, Ownable {
mapping(address => uint256) borrowRates;
mapping(address => uint256) liquidityRates;
function getMarketBorrowRate(address _asset) external view override returns (uint256) {
return borrowRates[_asset];
}
function setMarketBorrowRate(address _asset, uint256 _rate) external override onlyOwner {
borrowRates[_asset] = _rate;
}
function getMarketLiquidityRate(address _asset) external view returns (uint256) {
return liquidityRates[_asset];
}
function setMarketLiquidityRate(address _asset, uint256 _rate) external onlyOwner {
liquidityRates[_asset] = _rate;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
library StringLib {
function concat(string memory a, string memory b) internal pure returns (string memory) {
return string(abi.encodePacked(a, b));
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {LendingPool} from '../protocol/lendingpool/LendingPool.sol';
import {
LendingPoolAddressesProvider
} from '../protocol/configuration/LendingPoolAddressesProvider.sol';
import {LendingPoolConfigurator} from '../protocol/lendingpool/LendingPoolConfigurator.sol';
import {AToken} from '../protocol/tokenization/AToken.sol';
import {
DefaultReserveInterestRateStrategy
} from '../protocol/lendingpool/DefaultReserveInterestRateStrategy.sol';
import {Ownable} from '../dependencies/openzeppelin/contracts/Ownable.sol';
import {StringLib} from './StringLib.sol';
contract ATokensAndRatesHelper is Ownable {
address payable private pool;
address private addressesProvider;
address private poolConfigurator;
event deployedContracts(address aToken, address strategy);
struct InitDeploymentInput {
address asset;
uint256[6] rates;
}
struct ConfigureReserveInput {
address asset;
uint256 baseLTV;
uint256 liquidationThreshold;
uint256 liquidationBonus;
uint256 reserveFactor;
bool stableBorrowingEnabled;
bool borrowingEnabled;
}
constructor(
address payable _pool,
address _addressesProvider,
address _poolConfigurator
) public {
pool = _pool;
addressesProvider = _addressesProvider;
poolConfigurator = _poolConfigurator;
}
function initDeployment(InitDeploymentInput[] calldata inputParams) external onlyOwner {
for (uint256 i = 0; i < inputParams.length; i++) {
emit deployedContracts(
address(new AToken()),
address(
new DefaultReserveInterestRateStrategy(
LendingPoolAddressesProvider(addressesProvider),
inputParams[i].rates[0],
inputParams[i].rates[1],
inputParams[i].rates[2],
inputParams[i].rates[3],
inputParams[i].rates[4],
inputParams[i].rates[5]
)
)
);
}
}
function configureReserves(ConfigureReserveInput[] calldata inputParams) external onlyOwner {
LendingPoolConfigurator configurator = LendingPoolConfigurator(poolConfigurator);
for (uint256 i = 0; i < inputParams.length; i++) {
configurator.configureReserveAsCollateral(
inputParams[i].asset,
inputParams[i].baseLTV,
inputParams[i].liquidationThreshold,
inputParams[i].liquidationBonus
);
if (inputParams[i].borrowingEnabled) {
configurator.enableBorrowingOnReserve(
inputParams[i].asset,
inputParams[i].stableBorrowingEnabled
);
}
configurator.setReserveFactor(inputParams[i].asset, inputParams[i].reserveFactor);
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {Ownable} from '../../dependencies/openzeppelin/contracts/Ownable.sol';
// Prettier ignore to prevent buidler flatter bug
// prettier-ignore
import {InitializableImmutableAdminUpgradeabilityProxy} from '../libraries/aave-upgradeability/InitializableImmutableAdminUpgradeabilityProxy.sol';
import {ILendingPoolAddressesProvider} from '../../interfaces/ILendingPoolAddressesProvider.sol';
/**
* @title LendingPoolAddressesProvider contract
* @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
* - Acting also as factory of proxies and admin of those, so with right to change its implementations
* - Owned by the Aave Governance
* @author Aave
**/
contract LendingPoolAddressesProvider is Ownable, ILendingPoolAddressesProvider {
string private _marketId;
mapping(bytes32 => address) private _addresses;
bytes32 private constant LENDING_POOL = 'LENDING_POOL';
bytes32 private constant LENDING_POOL_CONFIGURATOR = 'LENDING_POOL_CONFIGURATOR';
bytes32 private constant POOL_ADMIN = 'POOL_ADMIN';
bytes32 private constant EMERGENCY_ADMIN = 'EMERGENCY_ADMIN';
bytes32 private constant LENDING_POOL_COLLATERAL_MANAGER = 'COLLATERAL_MANAGER';
bytes32 private constant PRICE_ORACLE = 'PRICE_ORACLE';
bytes32 private constant LENDING_RATE_ORACLE = 'LENDING_RATE_ORACLE';
constructor(string memory marketId) public {
_setMarketId(marketId);
}
/**
* @dev Returns the id of the Aave market to which this contracts points to
* @return The market id
**/
function getMarketId() external view override returns (string memory) {
return _marketId;
}
/**
* @dev Allows to set the market which this LendingPoolAddressesProvider represents
* @param marketId The market id
*/
function setMarketId(string memory marketId) external override onlyOwner {
_setMarketId(marketId);
}
/**
* @dev General function to update the implementation of a proxy registered with
* certain `id`. If there is no proxy registered, it will instantiate one and
* set as implementation the `implementationAddress`
* IMPORTANT Use this function carefully, only for ids that don't have an explicit
* setter function, in order to avoid unexpected consequences
* @param id The id
* @param implementationAddress The address of the new implementation
*/
function setAddressAsProxy(bytes32 id, address implementationAddress)
external
override
onlyOwner
{
_updateImpl(id, implementationAddress);
emit AddressSet(id, implementationAddress, true);
}
/**
* @dev Sets an address for an id replacing the address saved in the addresses map
* IMPORTANT Use this function carefully, as it will do a hard replacement
* @param id The id
* @param newAddress The address to set
*/
function setAddress(bytes32 id, address newAddress) external override onlyOwner {
_addresses[id] = newAddress;
emit AddressSet(id, newAddress, false);
}
/**
* @dev Returns an address by id
* @return The address
*/
function getAddress(bytes32 id) public view override returns (address) {
return _addresses[id];
}
/**
* @dev Returns the address of the LendingPool proxy
* @return The LendingPool proxy address
**/
function getLendingPool() external view override returns (address) {
return getAddress(LENDING_POOL);
}
/**
* @dev Updates the implementation of the LendingPool, or creates the proxy
* setting the new `pool` implementation on the first time calling it
* @param pool The new LendingPool implementation
**/
function setLendingPoolImpl(address pool) external override onlyOwner {
_updateImpl(LENDING_POOL, pool);
emit LendingPoolUpdated(pool);
}
/**
* @dev Returns the address of the LendingPoolConfigurator proxy
* @return The LendingPoolConfigurator proxy address
**/
function getLendingPoolConfigurator() external view override returns (address) {
return getAddress(LENDING_POOL_CONFIGURATOR);
}
/**
* @dev Updates the implementation of the LendingPoolConfigurator, or creates the proxy
* setting the new `configurator` implementation on the first time calling it
* @param configurator The new LendingPoolConfigurator implementation
**/
function setLendingPoolConfiguratorImpl(address configurator) external override onlyOwner {
_updateImpl(LENDING_POOL_CONFIGURATOR, configurator);
emit LendingPoolConfiguratorUpdated(configurator);
}
/**
* @dev Returns the address of the LendingPoolCollateralManager. Since the manager is used
* through delegateCall within the LendingPool contract, the proxy contract pattern does not work properly hence
* the addresses are changed directly
* @return The address of the LendingPoolCollateralManager
**/
function getLendingPoolCollateralManager() external view override returns (address) {
return getAddress(LENDING_POOL_COLLATERAL_MANAGER);
}
/**
* @dev Updates the address of the LendingPoolCollateralManager
* @param manager The new LendingPoolCollateralManager address
**/
function setLendingPoolCollateralManager(address manager) external override onlyOwner {
_addresses[LENDING_POOL_COLLATERAL_MANAGER] = manager;
emit LendingPoolCollateralManagerUpdated(manager);
}
/**
* @dev The functions below are getters/setters of addresses that are outside the context
* of the protocol hence the upgradable proxy pattern is not used
**/
function getPoolAdmin() external view override returns (address) {
return getAddress(POOL_ADMIN);
}
function setPoolAdmin(address admin) external override onlyOwner {
_addresses[POOL_ADMIN] = admin;
emit ConfigurationAdminUpdated(admin);
}
function getEmergencyAdmin() external view override returns (address) {
return getAddress(EMERGENCY_ADMIN);
}
function setEmergencyAdmin(address emergencyAdmin) external override onlyOwner {
_addresses[EMERGENCY_ADMIN] = emergencyAdmin;
emit EmergencyAdminUpdated(emergencyAdmin);
}
function getPriceOracle() external view override returns (address) {
return getAddress(PRICE_ORACLE);
}
function setPriceOracle(address priceOracle) external override onlyOwner {
_addresses[PRICE_ORACLE] = priceOracle;
emit PriceOracleUpdated(priceOracle);
}
function getLendingRateOracle() external view override returns (address) {
return getAddress(LENDING_RATE_ORACLE);
}
function setLendingRateOracle(address lendingRateOracle) external override onlyOwner {
_addresses[LENDING_RATE_ORACLE] = lendingRateOracle;
emit LendingRateOracleUpdated(lendingRateOracle);
}
/**
* @dev Internal function to update the implementation of a specific proxied component of the protocol
* - If there is no proxy registered in the given `id`, it creates the proxy setting `newAdress`
* as implementation and calls the initialize() function on the proxy
* - If there is already a proxy registered, it just updates the implementation to `newAddress` and
* calls the initialize() function via upgradeToAndCall() in the proxy
* @param id The id of the proxy to be updated
* @param newAddress The address of the new implementation
**/
function _updateImpl(bytes32 id, address newAddress) internal {
address payable proxyAddress = payable(_addresses[id]);
InitializableImmutableAdminUpgradeabilityProxy proxy =
InitializableImmutableAdminUpgradeabilityProxy(proxyAddress);
bytes memory params = abi.encodeWithSignature('initialize(address)', address(this));
if (proxyAddress == address(0)) {
proxy = new InitializableImmutableAdminUpgradeabilityProxy(address(this));
proxy.initialize(newAddress, params);
_addresses[id] = address(proxy);
emit ProxyCreated(id, address(proxy));
} else {
proxy.upgradeToAndCall(newAddress, params);
}
}
function _setMarketId(string memory marketId) internal {
_marketId = marketId;
emit MarketIdSet(marketId);
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {ERC20} from '../../dependencies/openzeppelin/contracts/ERC20.sol';
/**
* @title ERC20Mintable
* @dev ERC20 minting logic
*/
contract MintableDelegationERC20 is ERC20 {
address public delegatee;
constructor(
string memory name,
string memory symbol,
uint8 decimals
) public ERC20(name, symbol) {
_setupDecimals(decimals);
}
/**
* @dev Function to mint tokensp
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(uint256 value) public returns (bool) {
_mint(msg.sender, value);
return true;
}
function delegate(address delegateeAddress) external {
delegatee = delegateeAddress;
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './BaseUpgradeabilityProxy.sol';
/**
* @title UpgradeabilityProxy
* @dev Extends BaseUpgradeabilityProxy with a constructor for initializing
* implementation and init data.
*/
contract UpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Contract constructor.
* @param _logic Address of the initial implementation.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
constructor(address _logic, bytes memory _data) public payable {
assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
_setImplementation(_logic);
if (_data.length > 0) {
(bool success, ) = _logic.delegatecall(_data);
require(success);
}
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './UpgradeabilityProxy.sol';
/**
* @title BaseAdminUpgradeabilityProxy
* @dev This contract combines an upgradeability proxy with an authorization
* mechanism for administrative tasks.
* All external functions in this contract must be guarded by the
* `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
* feature proposal that would enable this to be done automatically.
*/
contract BaseAdminUpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Emitted when the administration has been transferred.
* @param previousAdmin Address of the previous admin.
* @param newAdmin Address of the new admin.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant ADMIN_SLOT =
0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier to check whether the `msg.sender` is the admin.
* If it is, it will run the function. Otherwise, it will delegate the call
* to the implementation.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @return The address of the proxy admin.
*/
function admin() external ifAdmin returns (address) {
return _admin();
}
/**
* @return The address of the implementation.
*/
function implementation() external ifAdmin returns (address) {
return _implementation();
}
/**
* @dev Changes the admin of the proxy.
* Only the current admin can call this function.
* @param newAdmin Address to transfer proxy administration to.
*/
function changeAdmin(address newAdmin) external ifAdmin {
require(newAdmin != address(0), 'Cannot change the admin of a proxy to the zero address');
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the backing implementation of the proxy.
* Only the admin can call this function.
* @param newImplementation Address of the new implementation.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the backing implementation of the proxy and call a function
* on the new implementation.
* This is useful to initialize the proxied contract.
* @param newImplementation Address of the new implementation.
* @param data Data to send as msg.data in the low level call.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data)
external
payable
ifAdmin
{
_upgradeTo(newImplementation);
(bool success, ) = newImplementation.delegatecall(data);
require(success);
}
/**
* @return adm The admin slot.
*/
function _admin() internal view returns (address adm) {
bytes32 slot = ADMIN_SLOT;
//solium-disable-next-line
assembly {
adm := sload(slot)
}
}
/**
* @dev Sets the address of the proxy admin.
* @param newAdmin Address of the new proxy admin.
*/
function _setAdmin(address newAdmin) internal {
bytes32 slot = ADMIN_SLOT;
//solium-disable-next-line
assembly {
sstore(slot, newAdmin)
}
}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() internal virtual override {
require(msg.sender != _admin(), 'Cannot call fallback function from the proxy admin');
super._willFallback();
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './BaseAdminUpgradeabilityProxy.sol';
import './InitializableUpgradeabilityProxy.sol';
/**
* @title InitializableAdminUpgradeabilityProxy
* @dev Extends from BaseAdminUpgradeabilityProxy with an initializer for
* initializing the implementation, admin, and init data.
*/
contract InitializableAdminUpgradeabilityProxy is
BaseAdminUpgradeabilityProxy,
InitializableUpgradeabilityProxy
{
/**
* Contract initializer.
* @param logic address of the initial implementation.
* @param admin Address of the proxy administrator.
* @param data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
function initialize(
address logic,
address admin,
bytes memory data
) public payable {
require(_implementation() == address(0));
InitializableUpgradeabilityProxy.initialize(logic, data);
assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
_setAdmin(admin);
}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() internal override(BaseAdminUpgradeabilityProxy, Proxy) {
BaseAdminUpgradeabilityProxy._willFallback();
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import './BaseAdminUpgradeabilityProxy.sol';
/**
* @title AdminUpgradeabilityProxy
* @dev Extends from BaseAdminUpgradeabilityProxy with a constructor for
* initializing the implementation, admin, and init data.
*/
contract AdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, UpgradeabilityProxy {
/**
* Contract constructor.
* @param _logic address of the initial implementation.
* @param _admin Address of the proxy administrator.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
constructor(
address _logic,
address _admin,
bytes memory _data
) public payable UpgradeabilityProxy(_logic, _data) {
assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
_setAdmin(_admin);
}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() internal override(BaseAdminUpgradeabilityProxy, Proxy) {
BaseAdminUpgradeabilityProxy._willFallback();
}
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
import {IERC20} from '../dependencies/openzeppelin/contracts/IERC20.sol';
interface IExchangeAdapter {
event Exchange(
address indexed from,
address indexed to,
address indexed platform,
uint256 fromAmount,
uint256 toAmount
);
function approveExchange(IERC20[] calldata tokens) external;
function exchange(
address from,
address to,
uint256 amount,
uint256 maxSlippage
) external returns (uint256);
}
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
import {IParaSwapAugustusRegistry} from '../../interfaces/IParaSwapAugustusRegistry.sol';
contract MockParaSwapAugustusRegistry is IParaSwapAugustusRegistry {
address immutable AUGUSTUS;
constructor(address augustus) public {
AUGUSTUS = augustus;
}
function isValidAugustus(address augustus) external view override returns (bool) {
return augustus == AUGUSTUS;
}
}
|
* @dev delegates borrowing power to a user on the specific debt token @param delegatee the address receiving the delegated borrowing power @param amount the maximum amount being delegated. Delegation will still respect the liquidation constraints (even if delegated, a delegatee cannot force a delegator HF to go below 1)/
|
function approveDelegation(address delegatee, uint256 amount) public override onlyBorrowers {
super.approveDelegation(delegatee, amount);
}
| 1,599,717 |
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/**
* Copyright 2017–2018, bZeroX, LLC. All Rights Reserved.
* Licensed under the Apache License, Version 2.0.
*/
pragma solidity 0.4.24;
pragma experimental ABIEncoderV2;
import "openzeppelin-solidity/contracts/math/SafeMath.sol";
import "../storage/BZxStorage.sol";
import "../BZxVault.sol";
import "../oracle/OracleRegistry.sol";
import "../oracle/OracleInterface.sol";
import "./InternalFunctions.sol";
contract OrderTakingFunctions is BZxStorage, InternalFunctions {
using SafeMath for uint256;
// 0x signature types.
enum SignatureType {
Illegal, // 0x00, default value
Invalid, // 0x01
EIP712, // 0x02
EthSign, // 0x03
Wallet, // 0x04
Validator, // 0x05
PreSigned, // 0x06
NSignatureTypes // 0x07, number of signature types. Always leave at end.
}
/// @dev Verifies that an order signature is valid.
/// @param signer address of signer.
/// @param hash Signed Keccak-256 hash.
/// @param signature ECDSA signature in raw bytes (rsv) + signatureType.
/// @return Validity of order signature.
function _isValidSignature(
address signer,
bytes32 hash,
bytes signature)
internal
view
returns (bool)
{
SignatureType signatureType;
uint8 v;
bytes32 r;
bytes32 s;
(signatureType, v, r, s) = _getSignatureParts(signature);
// Signature using EIP712
if (signatureType == SignatureType.EIP712) {
return signer == ecrecover(
hash,
v,
r,
s
);
// Signed using web3.eth_sign
} else if (signatureType == SignatureType.EthSign) {
return signer == ecrecover(
keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)),
v,
r,
s
);
// Signer signed hash previously using the preSign function.
} else if (signatureType == SignatureType.PreSigned) {
return preSigned[hash][signer];
}
// Anything else is illegal (We do not return false because
// the signature may actually be valid, just not in a format
// that we currently support. In this case returning false
// may lead the caller to incorrectly believe that the
// signature was invalid.)
revert("UNSUPPORTED_SIGNATURE_TYPE");
}
/// @param signature ECDSA signature in raw bytes (rsv).
/// @dev This supports 0x V2 SignatureType
function _getSignatureParts(
bytes signature)
internal
pure
returns (
SignatureType signatureType,
uint8 v,
bytes32 r,
bytes32 s)
{
require(
signature.length == 66,
"INVALID_SIGNATURE_LENGTH"
);
uint8 t;
assembly {
r := mload(add(signature, 32))
s := mload(add(signature, 64))
v := mload(add(signature, 65))
t := mload(add(signature, 66))
}
signatureType = SignatureType(t);
if (v < 27) {
v = v + 27;
}
}
function _getLoanOrderHash(
address[6] orderAddresses,
uint[10] orderValues)
internal
view
returns (bytes32)
{
return(keccak256(abi.encodePacked(
address(this),
orderAddresses,
orderValues
)));
}
function _addLoanOrder(
address[6] orderAddresses,
uint[10] orderValues,
bytes signature)
internal
returns (bytes32 loanOrderHash)
{
loanOrderHash = _getLoanOrderHash(orderAddresses, orderValues);
if (orders[loanOrderHash].loanTokenAddress == address(0)) {
LoanOrder memory loanOrder = LoanOrder({
loanTokenAddress: orderAddresses[1],
interestTokenAddress: orderAddresses[2],
collateralTokenAddress: orderAddresses[3],
oracleAddress: orderAddresses[5],
loanTokenAmount: orderValues[0],
interestAmount: orderValues[1],
initialMarginAmount: orderValues[2],
maintenanceMarginAmount: orderValues[3],
maxDurationUnixTimestampSec: orderValues[6],
loanOrderHash: loanOrderHash
});
LoanOrderAux memory loanOrderAux = LoanOrderAux({
maker: orderAddresses[0],
feeRecipientAddress: orderAddresses[4],
lenderRelayFee: orderValues[4],
traderRelayFee: orderValues[5],
makerRole: orderValues[8],
expirationUnixTimestampSec: orderValues[7]
});
if (!_verifyNewLoanOrder(
loanOrder,
loanOrderAux,
signature
)) {
revert("BZxOrderTaking::_addLoanOrder: loan verification failed");
}
orders[loanOrderHash] = loanOrder;
orderAux[loanOrderHash] = loanOrderAux;
emit LogLoanAdded (
loanOrderHash,
msg.sender,
loanOrderAux.maker,
orderAddresses[4],
orderValues[4],
orderValues[5],
loanOrder.maxDurationUnixTimestampSec,
loanOrderAux.makerRole
);
}
return loanOrderHash;
}
function _verifyNewLoanOrder(
LoanOrder loanOrder,
LoanOrderAux loanOrderAux,
bytes signature)
internal
view
returns (bool)
{
// loanOrder.interestTokenAddress == address(0) is permitted for interest-free loans
if (loanOrderAux.maker == address(0)
|| loanOrder.loanTokenAddress == address(0)) {
revert("BZxOrderTaking::_verifyNewLoanOrder: loanOrderAux.loanTokenAddress == address(0) || loanOrder.loanTokenAddress == address(0)");
}
if (loanOrderAux.expirationUnixTimestampSec > 0 && block.timestamp >= loanOrderAux.expirationUnixTimestampSec) {
revert("BZxOrderTaking::_verifyNewLoanOrder: block.timestamp >= loanOrderAux.expirationUnixTimestampSec");
}
if (loanOrder.maxDurationUnixTimestampSec == 0 || loanOrder.maxDurationUnixTimestampSec > block.timestamp + loanOrder.maxDurationUnixTimestampSec) {
revert("BZxOrderTaking::_verifyNewLoanOrder: loanOrder.maxDurationUnixTimestampSec == 0 || loanOrder.maxDurationUnixTimestampSec causes overflow");
}
if (! OracleRegistry(oracleRegistryContract).hasOracle(loanOrder.oracleAddress) || oracleAddresses[loanOrder.oracleAddress] == address(0)) {
revert("BZxOrderTaking::_verifyNewLoanOrder: Oracle doesn't exist");
}
if (loanOrder.maintenanceMarginAmount == 0 || loanOrder.maintenanceMarginAmount >= loanOrder.initialMarginAmount) {
revert("BZxOrderTaking::_verifyNewLoanOrder: loanOrder.maintenanceMarginAmount == 0 || loanOrder.maintenanceMarginAmount >= loanOrder.initialMarginAmount");
}
if (!_isValidSignature(
loanOrderAux.maker,
loanOrder.loanOrderHash,
signature
)) {
revert("BZxOrderTaking::_verifyNewLoanOrder: signature invalid");
}
return true;
}
function _verifyExistingLoanOrder(
LoanOrder loanOrder,
LoanOrderAux loanOrderAux,
address collateralTokenFilled,
uint loanTokenAmountFilled)
internal
returns (bool)
{
if (loanOrderAux.maker == msg.sender) {
revert("BZxOrderTaking::_verifyExistingLoanOrder: loanOrderAux.maker == msg.sender");
}
if (collateralTokenFilled == address(0)) {
revert("BZxOrderTaking::_verifyExistingLoanOrder: collateralTokenFilled == address(0)");
}
if (loanOrderAux.expirationUnixTimestampSec > 0 && block.timestamp >= loanOrderAux.expirationUnixTimestampSec) {
revert("BZxOrderTaking::_verifyExistingLoanOrder: block.timestamp >= loanOrderAux.expirationUnixTimestampSec");
}
if (loanOrder.maxDurationUnixTimestampSec == 0 || loanOrder.maxDurationUnixTimestampSec > block.timestamp + loanOrder.maxDurationUnixTimestampSec) {
revert("BZxOrderTaking::_verifyExistingLoanOrder: loanOrder.maxDurationUnixTimestampSec == 0 || loanOrder.maxDurationUnixTimestampSec causes overflow");
}
uint remainingLoanTokenAmount = loanOrder.loanTokenAmount.sub(_getUnavailableLoanTokenAmount(loanOrder.loanOrderHash));
if (remainingLoanTokenAmount < loanTokenAmountFilled) {
revert("BZxOrderTaking::_verifyExistingLoanOrder: remainingLoanTokenAmount < loanTokenAmountFilled");
} else if (remainingLoanTokenAmount > loanTokenAmountFilled) {
if (!orderListIndex[loanOrder.loanOrderHash][address(0)].isSet) {
// record of fillable (non-expired, unfilled) orders
orderList[address(0)].push(loanOrder.loanOrderHash);
orderListIndex[loanOrder.loanOrderHash][address(0)] = ListIndex({
index: orderList[address(0)].length-1,
isSet: true
});
}
} else { // remainingLoanTokenAmount == loanTokenAmountFilled
_removeLoanOrder(loanOrder.loanOrderHash, address(0));
}
return true;
}
function _takeLoanOrder(
bytes32 loanOrderHash,
address collateralTokenFilled,
uint loanTokenAmountFilled,
uint takerRole) // (0=lender, 1=trader)
internal
returns (uint)
{
LoanOrder memory loanOrder = orders[loanOrderHash];
if (loanOrder.loanTokenAddress == address(0)) {
revert("BZxOrderTaking::_takeLoanOrder: loanOrder.loanTokenAddress == address(0)");
}
LoanOrderAux memory loanOrderAux = orderAux[loanOrderHash];
if (!_verifyExistingLoanOrder(
loanOrder,
loanOrderAux,
collateralTokenFilled,
loanTokenAmountFilled
)) {
revert("BZxOrderTaking::_takeLoanOrder: loan verification failed");
}
address lender;
address trader;
if (takerRole == 1) { // trader
lender = loanOrderAux.maker;
trader = msg.sender;
} else { // lender
lender = msg.sender;
trader = loanOrderAux.maker;
}
if (orderListIndex[loanOrderHash][trader].isSet) {
// A trader can only fill a portion or all of a loanOrder once:
// - this avoids complex interest payments for parts of an order filled at different times by the same trader
// - this avoids potentially large loops when calculating margin reqirements and interest payments
revert("BZxOrderTaking::_takeLoanOrder: trader has already filled order");
}
// makerRole and takerRole must not be equal and must have a value <= 1
if (loanOrderAux.makerRole > 1 || takerRole > 1 || loanOrderAux.makerRole == takerRole) {
revert("BZxOrderTaking::_takeLoanOrder: makerRole > 1 || takerRole > 1 || makerRole == takerRole");
}
uint collateralTokenAmountFilled = _fillLoanOrder(
loanOrder,
trader,
lender,
collateralTokenFilled,
loanTokenAmountFilled
);
LoanPosition memory loanPosition = _setOrderAndPositionState(
loanOrder,
trader,
lender,
collateralTokenFilled,
collateralTokenAmountFilled,
loanTokenAmountFilled
);
emit LogLoanTaken (
orderLender[loanOrder.loanOrderHash],
loanPosition.trader,
loanPosition.collateralTokenAddressFilled,
loanPosition.positionTokenAddressFilled,
loanPosition.loanTokenAmountFilled,
loanPosition.collateralTokenAmountFilled,
loanPosition.positionTokenAmountFilled,
loanPosition.loanStartUnixTimestampSec,
loanPosition.active,
loanOrder.loanOrderHash
);
if (collateralTokenAmountFilled > 0) {
if (! OracleInterface(oracleAddresses[loanOrder.oracleAddress]).didTakeOrder(
loanOrder,
loanOrderAux,
loanPosition,
loanPositionsIds[loanOrder.loanOrderHash][trader],
msg.sender,
gasUsed
)) {
revert("BZxOrderTaking::_takeLoanOrder: OracleInterface.didTakeOrder failed");
}
}
return loanTokenAmountFilled;
}
function _setOrderAndPositionState(
LoanOrder memory loanOrder,
address trader,
address lender,
address collateralTokenFilled,
uint collateralTokenAmountFilled,
uint loanTokenAmountFilled)
internal
returns (LoanPosition memory loanPosition)
{
// this function should not be called if trader has already filled the loanOrder
assert(!orderListIndex[loanOrder.loanOrderHash][trader].isSet);
orderFilledAmounts[loanOrder.loanOrderHash] = orderFilledAmounts[loanOrder.loanOrderHash].add(loanTokenAmountFilled);
orderLender[loanOrder.loanOrderHash] = lender;
loanPosition = LoanPosition({
trader: trader,
collateralTokenAddressFilled: collateralTokenFilled,
positionTokenAddressFilled: loanOrder.loanTokenAddress,
loanTokenAmountFilled: loanTokenAmountFilled,
loanTokenAmountUsed: 0,
collateralTokenAmountFilled: collateralTokenAmountFilled,
positionTokenAmountFilled: loanTokenAmountFilled,
loanStartUnixTimestampSec: block.timestamp,
loanEndUnixTimestampSec: block.timestamp.add(loanOrder.maxDurationUnixTimestampSec),
active: true
});
uint positionId = uint(keccak256(abi.encodePacked(
loanOrder.loanOrderHash,
orderPositionList[loanOrder.loanOrderHash].length,
trader,
lender,
block.timestamp
)));
assert(!positionListIndex[positionId].isSet);
loanPositions[positionId] = loanPosition;
if (!orderListIndex[loanOrder.loanOrderHash][lender].isSet) {
// set only once per order per lender
orderList[lender].push(loanOrder.loanOrderHash);
orderListIndex[loanOrder.loanOrderHash][lender] = ListIndex({
index: orderList[lender].length-1,
isSet: true
});
}
orderList[trader].push(loanOrder.loanOrderHash);
orderListIndex[loanOrder.loanOrderHash][trader] = ListIndex({
index: orderList[trader].length-1,
isSet: true
});
orderPositionList[loanOrder.loanOrderHash].push(positionId);
positionList.push(PositionRef({
loanOrderHash: loanOrder.loanOrderHash,
positionId: positionId
}));
positionListIndex[positionId] = ListIndex({
index: positionList.length-1,
isSet: true
});
loanPositionsIds[loanOrder.loanOrderHash][trader] = positionId;
}
function _fillLoanOrder(
LoanOrder memory loanOrder,
address trader,
address lender,
address collateralTokenFilled,
uint loanTokenAmountFilled)
internal
returns (uint)
{
uint collateralTokenAmountFilled = _getInitialCollateralRequired(
loanOrder.loanTokenAddress,
collateralTokenFilled,
oracleAddresses[loanOrder.oracleAddress],
loanTokenAmountFilled,
loanOrder.initialMarginAmount
);
if (collateralTokenAmountFilled == 0) {
revert("BZxOrderTaking::_fillLoanOrder: collateralTokenAmountFilled == 0");
}
// deposit collateral token
if (! BZxVault(vaultContract).depositToken(
collateralTokenFilled,
trader,
collateralTokenAmountFilled
)) {
revert("BZxOrderTaking::_fillLoanOrder: BZxVault.depositToken collateral failed");
}
// interest-free loan is permitted
if (loanOrder.interestAmount > 0) {
// total interest required if loan is kept until order expiration
// unused interest at the end of a loan is refunded to the trader
uint totalInterestRequired = _getTotalInterestRequired(
loanOrder.loanTokenAmount,
loanTokenAmountFilled,
loanOrder.interestAmount,
loanOrder.maxDurationUnixTimestampSec);
if (totalInterestRequired > 0) {
// deposit interest token
if (! BZxVault(vaultContract).depositToken(
loanOrder.interestTokenAddress,
trader,
totalInterestRequired
)) {
revert("BZxOrderTaking::_fillLoanOrder: BZxVault.depositToken interest failed");
}
}
}
// deposit loan token
if (! BZxVault(vaultContract).depositToken(
loanOrder.loanTokenAddress,
lender,
loanTokenAmountFilled
)) {
revert("BZxOrderTaking::_fillLoanOrder: BZxVault.depositToken loan failed");
}
LoanOrderAux memory loanOrderAux = orderAux[loanOrder.loanOrderHash];
if (loanOrderAux.feeRecipientAddress != address(0)) {
if (loanOrderAux.traderRelayFee > 0) {
uint paidTraderFee = _safeGetPartialAmountFloor(loanTokenAmountFilled, loanOrder.loanTokenAmount, loanOrderAux.traderRelayFee);
if (! BZxVault(vaultContract).transferTokenFrom(
bZRxTokenContract,
trader,
loanOrderAux.feeRecipientAddress,
paidTraderFee
)) {
revert("BZxOrderTaking::_fillLoanOrder: BZxVault.transferTokenFrom traderRelayFee failed");
}
}
if (loanOrderAux.lenderRelayFee > 0) {
uint paidLenderFee = _safeGetPartialAmountFloor(loanTokenAmountFilled, loanOrder.loanTokenAmount, loanOrderAux.lenderRelayFee);
if (! BZxVault(vaultContract).transferTokenFrom(
bZRxTokenContract,
lender,
loanOrderAux.feeRecipientAddress,
paidLenderFee
)) {
revert("BZxOrderTaking::_fillLoanOrder: BZxVault.transferTokenFrom lenderRelayFee failed");
}
}
}
return collateralTokenAmountFilled;
}
}
|
@param signature ECDSA signature in raw bytes (rsv). @dev This supports 0x V2 SignatureType
|
function _getSignatureParts(
bytes signature)
internal
pure
returns (
SignatureType signatureType,
uint8 v,
bytes32 r,
bytes32 s)
{
require(
signature.length == 66,
"INVALID_SIGNATURE_LENGTH"
);
uint8 t;
assembly {
r := mload(add(signature, 32))
s := mload(add(signature, 64))
v := mload(add(signature, 65))
t := mload(add(signature, 66))
}
signatureType = SignatureType(t);
if (v < 27) {
v = v + 27;
}
}
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] |
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/**
* If we use 'ReefToken.balanceOf(address)' we are getting the Subsrate and EVM combined balance,
* as its contract is multi-currency mutant.
* We can use this util contract to get just the EVM balance of an address.
*/
contract BalanceHelper {
function balanceOf(address addr) external view returns (uint256) {
return address(addr).balance;
}
}
|
* If we use 'ReefToken.balanceOf(address)' we are getting the Subsrate and EVM combined balance, as its contract is multi-currency mutant. We can use this util contract to get just the EVM balance of an address./
|
contract BalanceHelper {
pragma solidity ^0.8.4;
function balanceOf(address addr) external view returns (uint256) {
return address(addr).balance;
}
}
| 12,904,876 |
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// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {IERC20} from "contracts/common/Imports.sol";
import {SafeMath} from "contracts/libraries/Imports.sol";
import {ImmutableAssetAllocation} from "contracts/tvl/Imports.sol";
import {
ConvexAllocationBase
} from "contracts/protocols/convex/common/Imports.sol";
import {ConvexAaveConstants} from "./Constants.sol";
import {
Curve3poolUnderlyerConstants
} from "contracts/protocols/curve/3pool/Constants.sol";
contract ConvexAaveAllocation is
ConvexAllocationBase,
ImmutableAssetAllocation,
ConvexAaveConstants,
Curve3poolUnderlyerConstants
{
function balanceOf(address account, uint8 tokenIndex)
public
view
override
returns (uint256)
{
// No unwrapping of aTokens are needed, as `balanceOf`
// automagically reflects the accrued interest and
// aTokens convert 1:1 to the underlyer.
return
super.getUnderlyerBalance(
account,
STABLE_SWAP_ADDRESS,
REWARD_CONTRACT_ADDRESS,
LP_TOKEN_ADDRESS,
uint256(tokenIndex)
);
}
function _getTokenData()
internal
pure
override
returns (TokenData[] memory)
{
TokenData[] memory tokens = new TokenData[](3);
tokens[0] = TokenData(DAI_ADDRESS, "DAI", 18);
tokens[1] = TokenData(USDC_ADDRESS, "USDC", 6);
tokens[2] = TokenData(USDT_ADDRESS, "USDT", 6);
return tokens;
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import {IDetailedERC20} from "./IDetailedERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {
ReentrancyGuard
} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {AccessControl} from "./AccessControl.sol";
import {INameIdentifier} from "./INameIdentifier.sol";
import {IAssetAllocation} from "./IAssetAllocation.sol";
import {IEmergencyExit} from "./IEmergencyExit.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {SafeMath} from "@openzeppelin/contracts/math/SafeMath.sol";
import {SignedSafeMath} from "@openzeppelin/contracts/math/SignedSafeMath.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import {EnumerableSet} from "@openzeppelin/contracts/utils/EnumerableSet.sol";
import {NamedAddressSet} from "./NamedAddressSet.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IErc20Allocation} from "./IErc20Allocation.sol";
import {IChainlinkRegistry} from "./IChainlinkRegistry.sol";
import {IAssetAllocationRegistry} from "./IAssetAllocationRegistry.sol";
import {AssetAllocationBase} from "./AssetAllocationBase.sol";
import {ImmutableAssetAllocation} from "./ImmutableAssetAllocation.sol";
import {Erc20AllocationConstants} from "./Erc20Allocation.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {ConvexZapBase} from "./ConvexZapBase.sol";
import {ConvexAllocationBase} from "./ConvexAllocationBase.sol";
import {OldConvexAllocationBase} from "./OldConvexAllocationBase.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {INameIdentifier} from "contracts/common/Imports.sol";
abstract contract ConvexAaveConstants is INameIdentifier {
string public constant override NAME = "convex-aave";
uint256 public constant PID = 24;
address public constant STABLE_SWAP_ADDRESS =
0xDeBF20617708857ebe4F679508E7b7863a8A8EeE;
address public constant LP_TOKEN_ADDRESS =
0xFd2a8fA60Abd58Efe3EeE34dd494cD491dC14900;
address public constant REWARD_CONTRACT_ADDRESS =
0xE82c1eB4BC6F92f85BF7EB6421ab3b882C3F5a7B;
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {INameIdentifier} from "contracts/common/Imports.sol";
abstract contract Curve3poolUnderlyerConstants {
// underlyer addresses
address public constant DAI_ADDRESS =
0x6B175474E89094C44Da98b954EedeAC495271d0F;
address public constant USDC_ADDRESS =
0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
address public constant USDT_ADDRESS =
0xdAC17F958D2ee523a2206206994597C13D831ec7;
}
abstract contract Curve3poolConstants is
Curve3poolUnderlyerConstants,
INameIdentifier
{
string public constant override NAME = "curve-3pool";
address public constant STABLE_SWAP_ADDRESS =
0xbEbc44782C7dB0a1A60Cb6fe97d0b483032FF1C7;
address public constant LP_TOKEN_ADDRESS =
0x6c3F90f043a72FA612cbac8115EE7e52BDe6E490;
address public constant LIQUIDITY_GAUGE_ADDRESS =
0xbFcF63294aD7105dEa65aA58F8AE5BE2D9d0952A;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IDetailedERC20 is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor () internal {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.6.11;
import {
AccessControl as OZAccessControl
} from "@openzeppelin/contracts/access/AccessControl.sol";
/**
* @notice Extends OpenZeppelin AccessControl contract with modifiers
* @dev This contract and AccessControlUpgradeSafe are essentially duplicates.
*/
contract AccessControl is OZAccessControl {
/** @notice access control roles **/
bytes32 public constant CONTRACT_ROLE = keccak256("CONTRACT_ROLE");
bytes32 public constant LP_ROLE = keccak256("LP_ROLE");
bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");
bytes32 public constant EMERGENCY_ROLE = keccak256("EMERGENCY_ROLE");
modifier onlyLpRole() {
require(hasRole(LP_ROLE, _msgSender()), "NOT_LP_ROLE");
_;
}
modifier onlyContractRole() {
require(hasRole(CONTRACT_ROLE, _msgSender()), "NOT_CONTRACT_ROLE");
_;
}
modifier onlyAdminRole() {
require(hasRole(ADMIN_ROLE, _msgSender()), "NOT_ADMIN_ROLE");
_;
}
modifier onlyEmergencyRole() {
require(hasRole(EMERGENCY_ROLE, _msgSender()), "NOT_EMERGENCY_ROLE");
_;
}
modifier onlyLpOrContractRole() {
require(
hasRole(LP_ROLE, _msgSender()) ||
hasRole(CONTRACT_ROLE, _msgSender()),
"NOT_LP_OR_CONTRACT_ROLE"
);
_;
}
modifier onlyAdminOrContractRole() {
require(
hasRole(ADMIN_ROLE, _msgSender()) ||
hasRole(CONTRACT_ROLE, _msgSender()),
"NOT_ADMIN_OR_CONTRACT_ROLE"
);
_;
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
/**
* @notice Used by the `NamedAddressSet` library to store sets of contracts
*/
interface INameIdentifier {
/// @notice Should be implemented as a constant value
// solhint-disable-next-line func-name-mixedcase
function NAME() external view returns (string memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {INameIdentifier} from "./INameIdentifier.sol";
/**
* @notice For use with the `TvlManager` to track the value locked in a protocol
*/
interface IAssetAllocation is INameIdentifier {
struct TokenData {
address token;
string symbol;
uint8 decimals;
}
/**
* @notice Get data for the underlying tokens stored in the protocol
* @return The array of `TokenData`
*/
function tokens() external view returns (TokenData[] memory);
/**
* @notice Get the number of different tokens stored in the protocol
* @return The number of tokens
*/
function numberOfTokens() external view returns (uint256);
/**
* @notice Get an account's balance for a token stored in the protocol
* @dev The token index should be ordered the same as the `tokens()` array
* @param account The account to get the balance for
* @param tokenIndex The index of the token to get the balance for
* @return The account's balance
*/
function balanceOf(address account, uint8 tokenIndex)
external
view
returns (uint256);
/**
* @notice Get the symbol of a token stored in the protocol
* @dev The token index should be ordered the same as the `tokens()` array
* @param tokenIndex The index of the token
* @return The symbol of the token
*/
function symbolOf(uint8 tokenIndex) external view returns (string memory);
/**
* @notice Get the decimals of a token stored in the protocol
* @dev The token index should be ordered the same as the `tokens()` array
* @param tokenIndex The index of the token
* @return The decimals of the token
*/
function decimalsOf(uint8 tokenIndex) external view returns (uint8);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IERC20} from "./Imports.sol";
/**
* @notice Used for contracts that need an emergency escape hatch
* @notice Should only be used in an emergency to keep funds safu
*/
interface IEmergencyExit {
/**
* @param emergencySafe The address the tokens were escaped to
* @param token The token escaped
* @param balance The amount of tokens escaped
*/
event EmergencyExit(address emergencySafe, IERC20 token, uint256 balance);
/**
* @notice Transfer all tokens to the emergency Safe
* @dev Should only be callable by the emergency Safe
* @dev Should only transfer tokens to the emergency Safe
* @param token The token to transfer
*/
function emergencyExit(address token) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/EnumerableSet.sol";
import "../utils/Address.sol";
import "../utils/Context.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context {
using EnumerableSet for EnumerableSet.AddressSet;
using Address for address;
struct RoleData {
EnumerableSet.AddressSet members;
bytes32 adminRole;
}
mapping (bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view returns (bool) {
return _roles[role].members.contains(account);
}
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) public view returns (uint256) {
return _roles[role].members.length();
}
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) public view returns (address) {
return _roles[role].members.at(index);
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant");
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke");
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
emit RoleAdminChanged(role, _roles[role].adminRole, adminRole);
_roles[role].adminRole = adminRole;
}
function _grantRole(bytes32 role, address account) private {
if (_roles[role].members.add(account)) {
emit RoleGranted(role, account, _msgSender());
}
}
function _revokeRole(bytes32 role, address account) private {
if (_roles[role].members.remove(account)) {
emit RoleRevoked(role, account, _msgSender());
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @title SignedSafeMath
* @dev Signed math operations with safety checks that revert on error.
*/
library SignedSafeMath {
int256 constant private _INT256_MIN = -2**255;
/**
* @dev Returns the multiplication of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two signed integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
/**
* @dev Returns the subtraction of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
/**
* @dev Returns the addition of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {EnumerableSet} from "@openzeppelin/contracts/utils/EnumerableSet.sol";
import {IAssetAllocation, INameIdentifier} from "contracts/common/Imports.sol";
import {IZap, ISwap} from "contracts/lpaccount/Imports.sol";
/**
* @notice Stores a set of addresses that can be looked up by name
* @notice Addresses can be added or removed dynamically
* @notice Useful for keeping track of unique deployed contracts
* @dev Each address must be a contract with a `NAME` constant for lookup
*/
// solhint-disable ordering
library NamedAddressSet {
using EnumerableSet for EnumerableSet.AddressSet;
struct Set {
EnumerableSet.AddressSet _namedAddresses;
mapping(string => INameIdentifier) _nameLookup;
}
struct AssetAllocationSet {
Set _inner;
}
struct ZapSet {
Set _inner;
}
struct SwapSet {
Set _inner;
}
function _add(Set storage set, INameIdentifier namedAddress) private {
require(Address.isContract(address(namedAddress)), "INVALID_ADDRESS");
require(
!set._namedAddresses.contains(address(namedAddress)),
"DUPLICATE_ADDRESS"
);
string memory name = namedAddress.NAME();
require(bytes(name).length != 0, "INVALID_NAME");
require(address(set._nameLookup[name]) == address(0), "DUPLICATE_NAME");
set._namedAddresses.add(address(namedAddress));
set._nameLookup[name] = namedAddress;
}
function _remove(Set storage set, string memory name) private {
address namedAddress = address(set._nameLookup[name]);
require(namedAddress != address(0), "INVALID_NAME");
set._namedAddresses.remove(namedAddress);
delete set._nameLookup[name];
}
function _contains(Set storage set, INameIdentifier namedAddress)
private
view
returns (bool)
{
return set._namedAddresses.contains(address(namedAddress));
}
function _length(Set storage set) private view returns (uint256) {
return set._namedAddresses.length();
}
function _at(Set storage set, uint256 index)
private
view
returns (INameIdentifier)
{
return INameIdentifier(set._namedAddresses.at(index));
}
function _get(Set storage set, string memory name)
private
view
returns (INameIdentifier)
{
return set._nameLookup[name];
}
function _names(Set storage set) private view returns (string[] memory) {
uint256 length_ = set._namedAddresses.length();
string[] memory names_ = new string[](length_);
for (uint256 i = 0; i < length_; i++) {
INameIdentifier namedAddress =
INameIdentifier(set._namedAddresses.at(i));
names_[i] = namedAddress.NAME();
}
return names_;
}
function add(
AssetAllocationSet storage set,
IAssetAllocation assetAllocation
) internal {
_add(set._inner, assetAllocation);
}
function remove(AssetAllocationSet storage set, string memory name)
internal
{
_remove(set._inner, name);
}
function contains(
AssetAllocationSet storage set,
IAssetAllocation assetAllocation
) internal view returns (bool) {
return _contains(set._inner, assetAllocation);
}
function length(AssetAllocationSet storage set)
internal
view
returns (uint256)
{
return _length(set._inner);
}
function at(AssetAllocationSet storage set, uint256 index)
internal
view
returns (IAssetAllocation)
{
return IAssetAllocation(address(_at(set._inner, index)));
}
function get(AssetAllocationSet storage set, string memory name)
internal
view
returns (IAssetAllocation)
{
return IAssetAllocation(address(_get(set._inner, name)));
}
function names(AssetAllocationSet storage set)
internal
view
returns (string[] memory)
{
return _names(set._inner);
}
function add(ZapSet storage set, IZap zap) internal {
_add(set._inner, zap);
}
function remove(ZapSet storage set, string memory name) internal {
_remove(set._inner, name);
}
function contains(ZapSet storage set, IZap zap)
internal
view
returns (bool)
{
return _contains(set._inner, zap);
}
function length(ZapSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(ZapSet storage set, uint256 index)
internal
view
returns (IZap)
{
return IZap(address(_at(set._inner, index)));
}
function get(ZapSet storage set, string memory name)
internal
view
returns (IZap)
{
return IZap(address(_get(set._inner, name)));
}
function names(ZapSet storage set) internal view returns (string[] memory) {
return _names(set._inner);
}
function add(SwapSet storage set, ISwap swap) internal {
_add(set._inner, swap);
}
function remove(SwapSet storage set, string memory name) internal {
_remove(set._inner, name);
}
function contains(SwapSet storage set, ISwap swap)
internal
view
returns (bool)
{
return _contains(set._inner, swap);
}
function length(SwapSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(SwapSet storage set, uint256 index)
internal
view
returns (ISwap)
{
return ISwap(address(_at(set._inner, index)));
}
function get(SwapSet storage set, string memory name)
internal
view
returns (ISwap)
{
return ISwap(address(_get(set._inner, name)));
}
function names(SwapSet storage set)
internal
view
returns (string[] memory)
{
return _names(set._inner);
}
}
// solhint-enable ordering
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IZap} from "./IZap.sol";
import {ISwap} from "./ISwap.sol";
import {ILpAccount} from "./ILpAccount.sol";
import {IZapRegistry} from "./IZapRegistry.sol";
import {ISwapRegistry} from "./ISwapRegistry.sol";
import {IStableSwap3Pool} from "./IStableSwap3Pool.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {
IAssetAllocation,
INameIdentifier,
IERC20
} from "contracts/common/Imports.sol";
/**
* @notice Used to define how an LP Account farms an external protocol
*/
interface IZap is INameIdentifier {
/**
* @notice Deploy liquidity to a protocol (i.e. enter a farm)
* @dev Implementation should add liquidity and stake LP tokens
* @param amounts Amount of each token to deploy
*/
function deployLiquidity(uint256[] calldata amounts) external;
/**
* @notice Unwind liquidity from a protocol (i.e exit a farm)
* @dev Implementation should unstake LP tokens and remove liquidity
* @dev If there is only one token to unwind, `index` should be 0
* @param amount Amount of liquidity to unwind
* @param index Which token should be unwound
*/
function unwindLiquidity(uint256 amount, uint8 index) external;
/**
* @notice Claim accrued rewards from the protocol (i.e. harvest yield)
*/
function claim() external;
/**
* @notice Retrieves the LP token balance
*/
function getLpTokenBalance(address account) external view returns (uint256);
/**
* @notice Order of tokens for deploy `amounts` and unwind `index`
* @dev Implementation should use human readable symbols
* @dev Order should be the same for deploy and unwind
* @return The array of symbols in order
*/
function sortedSymbols() external view returns (string[] memory);
/**
* @notice Asset allocations to include in TVL
* @dev Requires all allocations that track value deployed to the protocol
* @return An array of the asset allocation names
*/
function assetAllocations() external view returns (string[] memory);
/**
* @notice ERC20 asset allocations to include in TVL
* @dev Should return addresses for all tokens that get deployed or unwound
* @return The array of ERC20 token addresses
*/
function erc20Allocations() external view returns (IERC20[] memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {
IAssetAllocation,
INameIdentifier,
IERC20
} from "contracts/common/Imports.sol";
/**
* @notice Used to define a token swap that can be performed by an LP Account
*/
interface ISwap is INameIdentifier {
/**
* @dev Implementation should perform a token swap
* @param amount The amount of the input token to swap
* @param minAmount The minimum amount of the output token to accept
*/
function swap(uint256 amount, uint256 minAmount) external;
/**
* @notice ERC20 asset allocations to include in TVL
* @dev Should return addresses for all tokens going in and out of the swap
* @return The array of ERC20 token addresses
*/
function erc20Allocations() external view returns (IERC20[] memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
/**
* @notice For contracts that provide liquidity to external protocols
*/
interface ILpAccount {
/**
* @notice Deploy liquidity with a registered `IZap`
* @dev The order of token amounts should match `IZap.sortedSymbols`
* @param name The name of the `IZap`
* @param amounts The token amounts to deploy
*/
function deployStrategy(string calldata name, uint256[] calldata amounts)
external;
/**
* @notice Unwind liquidity with a registered `IZap`
* @dev The index should match the order of `IZap.sortedSymbols`
* @param name The name of the `IZap`
* @param amount The amount of the token to unwind
* @param index The index of the token to unwind into
*/
function unwindStrategy(
string calldata name,
uint256 amount,
uint8 index
) external;
/**
* @notice Return liquidity to a pool
* @notice Typically used to refill a liquidity pool's reserve
* @dev This should only be callable by the `MetaPoolToken`
* @param pool The `IReservePool` to transfer to
* @param amount The amount of the pool's underlyer token to transer
*/
function transferToPool(address pool, uint256 amount) external;
/**
* @notice Swap tokens with a registered `ISwap`
* @notice Used to compound reward tokens
* @notice Used to rebalance underlyer tokens
* @param name The name of the `IZap`
* @param amount The amount of tokens to swap
* @param minAmount The minimum amount of tokens to receive from the swap
*/
function swap(
string calldata name,
uint256 amount,
uint256 minAmount
) external;
/**
* @notice Claim reward tokens with a registered `IZap`
* @param name The name of the `IZap`
*/
function claim(string calldata name) external;
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {IZap} from "./IZap.sol";
/**
* @notice For managing a collection of `IZap` contracts
*/
interface IZapRegistry {
/** @notice Log when a new `IZap` is registered */
event ZapRegistered(IZap zap);
/** @notice Log when an `IZap` is removed */
event ZapRemoved(string name);
/**
* @notice Add a new `IZap` to the registry
* @dev Should not allow duplicate swaps
* @param zap The new `IZap`
*/
function registerZap(IZap zap) external;
/**
* @notice Remove an `IZap` from the registry
* @param name The name of the `IZap` (see `INameIdentifier`)
*/
function removeZap(string calldata name) external;
/**
* @notice Get the names of all registered `IZap`
* @return An array of `IZap` names
*/
function zapNames() external view returns (string[] memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {ISwap} from "./ISwap.sol";
/**
* @notice For managing a collection of `ISwap` contracts
*/
interface ISwapRegistry {
/** @notice Log when a new `ISwap` is registered */
event SwapRegistered(ISwap swap);
/** @notice Log when an `ISwap` is removed */
event SwapRemoved(string name);
/**
* @notice Add a new `ISwap` to the registry
* @dev Should not allow duplicate swaps
* @param swap The new `ISwap`
*/
function registerSwap(ISwap swap) external;
/**
* @notice Remove an `ISwap` from the registry
* @param name The name of the `ISwap` (see `INameIdentifier`)
*/
function removeSwap(string calldata name) external;
/**
* @notice Get the names of all registered `ISwap`
* @return An array of `ISwap` names
*/
function swapNames() external view returns (string[] memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
/**
* @notice the stablecoin pool contract
*/
interface IStableSwap3Pool {
function exchange(
int128 i,
int128 j,
uint256 dx,
uint256 min_dy // solhint-disable-line func-param-name-mixedcase
) external;
function coins(uint256 coin) external view returns (address);
// solhint-disable-next-line func-name-mixedcase
function get_dy(
int128 i,
int128 j,
uint256 dx
) external view returns (uint256);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IERC20, IDetailedERC20} from "contracts/common/Imports.sol";
/**
* @notice An asset allocation for tokens not stored in a protocol
* @dev `IZap`s and `ISwap`s register these separate from other allocations
* @dev Unlike other asset allocations, new tokens can be added or removed
* @dev Registration can override `symbol` and `decimals` manually because
* they are optional in the ERC20 standard.
*/
interface IErc20Allocation {
/** @notice Log when an ERC20 allocation is registered */
event Erc20TokenRegistered(IERC20 token, string symbol, uint8 decimals);
/** @notice Log when an ERC20 allocation is removed */
event Erc20TokenRemoved(IERC20 token);
/**
* @notice Add a new ERC20 token to the asset allocation
* @dev Should not allow duplicate tokens
* @param token The new token
*/
function registerErc20Token(IDetailedERC20 token) external;
/**
* @notice Add a new ERC20 token to the asset allocation
* @dev Should not allow duplicate tokens
* @param token The new token
* @param symbol Override the token symbol
*/
function registerErc20Token(IDetailedERC20 token, string calldata symbol)
external;
/**
* @notice Add a new ERC20 token to the asset allocation
* @dev Should not allow duplicate tokens
* @param token The new token
* @param symbol Override the token symbol
* @param decimals Override the token decimals
*/
function registerErc20Token(
IERC20 token,
string calldata symbol,
uint8 decimals
) external;
/**
* @notice Remove an ERC20 token from the asset allocation
* @param token The token to remove
*/
function removeErc20Token(IERC20 token) external;
/**
* @notice Check if an ERC20 token is registered
* @param token The token to check
* @return `true` if the token is registered, `false` otherwise
*/
function isErc20TokenRegistered(IERC20 token) external view returns (bool);
/**
* @notice Check if multiple ERC20 tokens are ALL registered
* @param tokens An array of tokens to check
* @return `true` if every token is registered, `false` otherwise
*/
function isErc20TokenRegistered(IERC20[] calldata tokens)
external
view
returns (bool);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
/**
* @notice Interface used by Chainlink to aggregate allocations and compute TVL
*/
interface IChainlinkRegistry {
/**
* @notice Get all IDs from registered asset allocations
* @notice Each ID is a unique asset allocation and token index pair
* @dev Should contain no duplicate IDs
* @return list of all IDs
*/
function getAssetAllocationIds() external view returns (bytes32[] memory);
/**
* @notice Get the LP Account's balance for an asset allocation ID
* @param allocationId The ID to fetch the balance for
* @return The balance for the LP Account
*/
function balanceOf(bytes32 allocationId) external view returns (uint256);
/**
* @notice Get the symbol for an allocation ID's underlying token
* @param allocationId The ID to fetch the symbol for
* @return The underlying token symbol
*/
function symbolOf(bytes32 allocationId)
external
view
returns (string memory);
/**
* @notice Get the decimals for an allocation ID's underlying token
* @param allocationId The ID to fetch the decimals for
* @return The underlying token decimals
*/
function decimalsOf(bytes32 allocationId) external view returns (uint256);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {IAssetAllocation} from "contracts/common/Imports.sol";
/**
* @notice For managing a collection of `IAssetAllocation` contracts
*/
interface IAssetAllocationRegistry {
/** @notice Log when an asset allocation is registered */
event AssetAllocationRegistered(IAssetAllocation assetAllocation);
/** @notice Log when an asset allocation is removed */
event AssetAllocationRemoved(string name);
/**
* @notice Add a new asset allocation to the registry
* @dev Should not allow duplicate asset allocations
* @param assetAllocation The new asset allocation
*/
function registerAssetAllocation(IAssetAllocation assetAllocation) external;
/**
* @notice Remove an asset allocation from the registry
* @param name The name of the asset allocation (see `INameIdentifier`)
*/
function removeAssetAllocation(string memory name) external;
/**
* @notice Check if multiple asset allocations are ALL registered
* @param allocationNames An array of asset allocation names
* @return `true` if every allocation is registered, otherwise `false`
*/
function isAssetAllocationRegistered(string[] calldata allocationNames)
external
view
returns (bool);
/**
* @notice Get the registered asset allocation with a given name
* @param name The asset allocation name
* @return The asset allocation
*/
function getAssetAllocation(string calldata name)
external
view
returns (IAssetAllocation);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {IAssetAllocation} from "contracts/common/Imports.sol";
abstract contract AssetAllocationBase is IAssetAllocation {
function numberOfTokens() external view override returns (uint256) {
return tokens().length;
}
function symbolOf(uint8 tokenIndex)
public
view
override
returns (string memory)
{
return tokens()[tokenIndex].symbol;
}
function decimalsOf(uint8 tokenIndex) public view override returns (uint8) {
return tokens()[tokenIndex].decimals;
}
function addressOf(uint8 tokenIndex) public view returns (address) {
return tokens()[tokenIndex].token;
}
function tokens() public view virtual override returns (TokenData[] memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {Address} from "contracts/libraries/Imports.sol";
import {AssetAllocationBase} from "./AssetAllocationBase.sol";
/**
* @notice Asset allocation with underlying tokens that cannot be added/removed
*/
abstract contract ImmutableAssetAllocation is AssetAllocationBase {
using Address for address;
constructor() public {
_validateTokens(_getTokenData());
}
function tokens() public view override returns (TokenData[] memory) {
TokenData[] memory tokens_ = _getTokenData();
return tokens_;
}
/**
* @notice Verifies that a `TokenData` array works with the `TvlManager`
* @dev Reverts when there is invalid `TokenData`
* @param tokens_ The array of `TokenData`
*/
function _validateTokens(TokenData[] memory tokens_) internal view virtual {
// length restriction due to encoding logic for allocation IDs
require(tokens_.length < type(uint8).max, "TOO_MANY_TOKENS");
for (uint256 i = 0; i < tokens_.length; i++) {
address token = tokens_[i].token;
_validateTokenAddress(token);
string memory symbol = tokens_[i].symbol;
require(bytes(symbol).length != 0, "INVALID_SYMBOL");
}
// TODO: check for duplicate tokens
}
/**
* @notice Verify that a token is a contract
* @param token The token to verify
*/
function _validateTokenAddress(address token) internal view virtual {
require(token.isContract(), "INVALID_ADDRESS");
}
/**
* @notice Get the immutable array of underlying `TokenData`
* @dev Should be implemented in child contracts with a hardcoded array
* @return The array of `TokenData`
*/
function _getTokenData() internal pure virtual returns (TokenData[] memory);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {
IERC20,
IDetailedERC20,
AccessControl,
INameIdentifier,
ReentrancyGuard
} from "contracts/common/Imports.sol";
import {Address, EnumerableSet} from "contracts/libraries/Imports.sol";
import {IAddressRegistryV2} from "contracts/registry/Imports.sol";
import {ILockingOracle} from "contracts/oracle/Imports.sol";
import {IErc20Allocation} from "./IErc20Allocation.sol";
import {AssetAllocationBase} from "./AssetAllocationBase.sol";
abstract contract Erc20AllocationConstants is INameIdentifier {
string public constant override NAME = "erc20Allocation";
}
contract Erc20Allocation is
IErc20Allocation,
AssetAllocationBase,
Erc20AllocationConstants,
AccessControl,
ReentrancyGuard
{
using Address for address;
using EnumerableSet for EnumerableSet.AddressSet;
IAddressRegistryV2 public addressRegistry;
EnumerableSet.AddressSet private _tokenAddresses;
mapping(address => TokenData) private _tokenToData;
/** @notice Log when the address registry is changed */
event AddressRegistryChanged(address);
constructor(address addressRegistry_) public {
_setAddressRegistry(addressRegistry_);
_setupRole(DEFAULT_ADMIN_ROLE, addressRegistry.emergencySafeAddress());
_setupRole(EMERGENCY_ROLE, addressRegistry.emergencySafeAddress());
_setupRole(ADMIN_ROLE, addressRegistry.adminSafeAddress());
_setupRole(CONTRACT_ROLE, addressRegistry.mAptAddress());
}
/**
* @notice Set the new address registry
* @param addressRegistry_ The new address registry
*/
function emergencySetAddressRegistry(address addressRegistry_)
external
nonReentrant
onlyEmergencyRole
{
_setAddressRegistry(addressRegistry_);
}
function registerErc20Token(IDetailedERC20 token)
external
override
nonReentrant
onlyAdminOrContractRole
{
string memory symbol = token.symbol();
uint8 decimals = token.decimals();
_registerErc20Token(token, symbol, decimals);
}
function registerErc20Token(IDetailedERC20 token, string calldata symbol)
external
override
nonReentrant
onlyAdminRole
{
uint8 decimals = token.decimals();
_registerErc20Token(token, symbol, decimals);
}
function registerErc20Token(
IERC20 token,
string calldata symbol,
uint8 decimals
) external override nonReentrant onlyAdminRole {
_registerErc20Token(token, symbol, decimals);
}
function removeErc20Token(IERC20 token)
external
override
nonReentrant
onlyAdminRole
{
_tokenAddresses.remove(address(token));
delete _tokenToData[address(token)];
_lockOracleAdapter();
emit Erc20TokenRemoved(token);
}
function isErc20TokenRegistered(IERC20 token)
external
view
override
returns (bool)
{
return _tokenAddresses.contains(address(token));
}
function isErc20TokenRegistered(IERC20[] calldata tokens)
external
view
override
returns (bool)
{
uint256 length = tokens.length;
for (uint256 i = 0; i < length; i++) {
if (!_tokenAddresses.contains(address(tokens[i]))) {
return false;
}
}
return true;
}
function balanceOf(address account, uint8 tokenIndex)
external
view
override
returns (uint256)
{
address token = addressOf(tokenIndex);
return IERC20(token).balanceOf(account);
}
function tokens() public view override returns (TokenData[] memory) {
TokenData[] memory _tokens = new TokenData[](_tokenAddresses.length());
for (uint256 i = 0; i < _tokens.length; i++) {
address tokenAddress = _tokenAddresses.at(i);
_tokens[i] = _tokenToData[tokenAddress];
}
return _tokens;
}
function _setAddressRegistry(address addressRegistry_) internal {
require(addressRegistry_.isContract(), "INVALID_ADDRESS");
addressRegistry = IAddressRegistryV2(addressRegistry_);
emit AddressRegistryChanged(addressRegistry_);
}
function _registerErc20Token(
IERC20 token,
string memory symbol,
uint8 decimals
) internal {
require(address(token).isContract(), "INVALID_ADDRESS");
require(bytes(symbol).length != 0, "INVALID_SYMBOL");
_tokenAddresses.add(address(token));
_tokenToData[address(token)] = TokenData(
address(token),
symbol,
decimals
);
_lockOracleAdapter();
emit Erc20TokenRegistered(token, symbol, decimals);
}
/**
* @notice Lock the `OracleAdapter` for the default period of time
* @dev Locking protects against front-running while Chainlink updates
*/
function _lockOracleAdapter() internal {
ILockingOracle oracleAdapter =
ILockingOracle(addressRegistry.oracleAdapterAddress());
oracleAdapter.lock();
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IAddressRegistryV2} from "./IAddressRegistryV2.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {AggregatorV3Interface, FluxAggregator} from "./FluxAggregator.sol";
import {IOracleAdapter} from "./IOracleAdapter.sol";
import {IOverrideOracle} from "./IOverrideOracle.sol";
import {ILockingOracle} from "./ILockingOracle.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
/**
* @notice The address registry has two important purposes, one which
* is fairly concrete and another abstract.
*
* 1. The registry enables components of the APY.Finance system
* and external systems to retrieve core addresses reliably
* even when the functionality may move to a different
* address.
*
* 2. The registry also makes explicit which contracts serve
* as primary entrypoints for interacting with different
* components. Not every contract is registered here, only
* the ones properly deserving of an identifier. This helps
* define explicit boundaries between groups of contracts,
* each of which is logically cohesive.
*/
interface IAddressRegistryV2 {
/**
* @notice Log when a new address is registered
* @param id The ID of the new address
* @param _address The new address
*/
event AddressRegistered(bytes32 id, address _address);
/**
* @notice Log when an address is removed from the registry
* @param id The ID of the address
* @param _address The address
*/
event AddressDeleted(bytes32 id, address _address);
/**
* @notice Register address with identifier
* @dev Using an existing ID will replace the old address with new
* @dev Currently there is no way to remove an ID, as attempting to
* register the zero address will revert.
*/
function registerAddress(bytes32 id, address address_) external;
/**
* @notice Registers multiple address at once
* @dev Convenient method to register multiple addresses at once.
* @param ids Ids to register addresses under
* @param addresses Addresses to register
*/
function registerMultipleAddresses(
bytes32[] calldata ids,
address[] calldata addresses
) external;
/**
* @notice Removes a registered id and it's associated address
* @dev Delete the address corresponding to the identifier Time-complexity is O(n) where n is the length of `_idList`.
* @param id ID to remove along with it's associated address
*/
function deleteAddress(bytes32 id) external;
/**
* @notice Returns the list of all registered identifiers.
* @return List of identifiers
*/
function getIds() external view returns (bytes32[] memory);
/**
* @notice Returns the list of all registered identifiers
* @param id Component identifier
* @return The current address represented by an identifier
*/
function getAddress(bytes32 id) external view returns (address);
/**
* @notice Returns the TVL Manager Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return TVL Manager Address
*/
function tvlManagerAddress() external view returns (address);
/**
* @notice Returns the Chainlink Registry Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return Chainlink Registry Address
*/
function chainlinkRegistryAddress() external view returns (address);
/**
* @notice Returns the DAI Pool Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return DAI Pool Address
*/
function daiPoolAddress() external view returns (address);
/**
* @notice Returns the USDC Pool Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return USDC Pool Address
*/
function usdcPoolAddress() external view returns (address);
/**
* @notice Returns the USDT Pool Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return USDT Pool Address
*/
function usdtPoolAddress() external view returns (address);
/**
* @notice Returns the MAPT Pool Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return MAPT Pool Address
*/
function mAptAddress() external view returns (address);
/**
* @notice Returns the LP Account Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return LP Account Address
*/
function lpAccountAddress() external view returns (address);
/**
* @notice Returns the LP Safe Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return LP Safe Address
*/
function lpSafeAddress() external view returns (address);
/**
* @notice Returns the Admin Safe Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return Admin Safe Address
*/
function adminSafeAddress() external view returns (address);
/**
* @notice Returns the Emergency Safe Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return Emergency Safe Address
*/
function emergencySafeAddress() external view returns (address);
/**
* @notice Returns the Oracle Adapter Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return Oracle Adapter Address
*/
function oracleAdapterAddress() external view returns (address);
/**
* @notice Returns the ERC20 Allocation Address
* @dev Not just a helper function, this makes explicit a key ID for the system
* @return ERC20 Allocation Address
*/
function erc20AllocationAddress() external view returns (address);
}
/**
SPDX-License-Identifier: UNLICENSED
----------------------------------
---- APY.Finance comments --------
----------------------------------
Due to pragma being fixed at 0.6.6, we had to copy over this contract
and fix the imports.
original path: @chainlink/contracts/src/v0.6/FluxAggregator.sol
npm package version: 0.0.9
*/
pragma solidity 0.6.11;
import "@chainlink/contracts/src/v0.6/Median.sol";
import "@chainlink/contracts/src/v0.6/Owned.sol";
import "@chainlink/contracts/src/v0.6/SafeMath128.sol";
import "@chainlink/contracts/src/v0.6/SafeMath32.sol";
import "@chainlink/contracts/src/v0.6/SafeMath64.sol";
import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV2V3Interface.sol";
import "@chainlink/contracts/src/v0.6/interfaces/AggregatorValidatorInterface.sol";
import "@chainlink/contracts/src/v0.6/interfaces/LinkTokenInterface.sol";
import "@chainlink/contracts/src/v0.6/vendor/SafeMath.sol";
/* solhint-disable */
/**
* @title The Prepaid Aggregator contract
* @notice Handles aggregating data pushed in from off-chain, and unlocks
* payment for oracles as they report. Oracles' submissions are gathered in
* rounds, with each round aggregating the submissions for each oracle into a
* single answer. The latest aggregated answer is exposed as well as historical
* answers and their updated at timestamp.
*/
contract FluxAggregator is AggregatorV2V3Interface, Owned {
using SafeMath for uint256;
using SafeMath128 for uint128;
using SafeMath64 for uint64;
using SafeMath32 for uint32;
struct Round {
int256 answer;
uint64 startedAt;
uint64 updatedAt;
uint32 answeredInRound;
}
struct RoundDetails {
int256[] submissions;
uint32 maxSubmissions;
uint32 minSubmissions;
uint32 timeout;
uint128 paymentAmount;
}
struct OracleStatus {
uint128 withdrawable;
uint32 startingRound;
uint32 endingRound;
uint32 lastReportedRound;
uint32 lastStartedRound;
int256 latestSubmission;
uint16 index;
address admin;
address pendingAdmin;
}
struct Requester {
bool authorized;
uint32 delay;
uint32 lastStartedRound;
}
struct Funds {
uint128 available;
uint128 allocated;
}
LinkTokenInterface public linkToken;
AggregatorValidatorInterface public validator;
// Round related params
uint128 public paymentAmount;
uint32 public maxSubmissionCount;
uint32 public minSubmissionCount;
uint32 public restartDelay;
uint32 public timeout;
uint8 public override decimals;
string public override description;
int256 public immutable minSubmissionValue;
int256 public immutable maxSubmissionValue;
uint256 public constant override version = 3;
/**
* @notice To ensure owner isn't withdrawing required funds as oracles are
* submitting updates, we enforce that the contract maintains a minimum
* reserve of RESERVE_ROUNDS * oracleCount() LINK earmarked for payment to
* oracles. (Of course, this doesn't prevent the contract from running out of
* funds without the owner's intervention.)
*/
uint256 private constant RESERVE_ROUNDS = 2;
uint256 private constant MAX_ORACLE_COUNT = 77;
uint32 private constant ROUND_MAX = 2**32 - 1;
uint256 private constant VALIDATOR_GAS_LIMIT = 100000;
// An error specific to the Aggregator V3 Interface, to prevent possible
// confusion around accidentally reading unset values as reported values.
string private constant V3_NO_DATA_ERROR = "No data present";
uint32 private reportingRoundId;
uint32 internal latestRoundId;
mapping(address => OracleStatus) private oracles;
mapping(uint32 => Round) internal rounds;
mapping(uint32 => RoundDetails) internal details;
mapping(address => Requester) internal requesters;
address[] private oracleAddresses;
Funds private recordedFunds;
event AvailableFundsUpdated(uint256 indexed amount);
event RoundDetailsUpdated(
uint128 indexed paymentAmount,
uint32 indexed minSubmissionCount,
uint32 indexed maxSubmissionCount,
uint32 restartDelay,
uint32 timeout // measured in seconds
);
event OraclePermissionsUpdated(
address indexed oracle,
bool indexed whitelisted
);
event OracleAdminUpdated(address indexed oracle, address indexed newAdmin);
event OracleAdminUpdateRequested(
address indexed oracle,
address admin,
address newAdmin
);
event SubmissionReceived(
int256 indexed submission,
uint32 indexed round,
address indexed oracle
);
event RequesterPermissionsSet(
address indexed requester,
bool authorized,
uint32 delay
);
event ValidatorUpdated(address indexed previous, address indexed current);
/**
* @notice set up the aggregator with initial configuration
* @param _link The address of the LINK token
* @param _paymentAmount The amount paid of LINK paid to each oracle per submission, in wei (units of 10⁻¹⁸ LINK)
* @param _timeout is the number of seconds after the previous round that are
* allowed to lapse before allowing an oracle to skip an unfinished round
* @param _validator is an optional contract address for validating
* external validation of answers
* @param _minSubmissionValue is an immutable check for a lower bound of what
* submission values are accepted from an oracle
* @param _maxSubmissionValue is an immutable check for an upper bound of what
* submission values are accepted from an oracle
* @param _decimals represents the number of decimals to offset the answer by
* @param _description a short description of what is being reported
*/
constructor(
address _link,
uint128 _paymentAmount,
uint32 _timeout,
address _validator,
int256 _minSubmissionValue,
int256 _maxSubmissionValue,
uint8 _decimals,
string memory _description
) public {
linkToken = LinkTokenInterface(_link);
updateFutureRounds(_paymentAmount, 0, 0, 0, _timeout);
setValidator(_validator);
minSubmissionValue = _minSubmissionValue;
maxSubmissionValue = _maxSubmissionValue;
decimals = _decimals;
description = _description;
rounds[0].updatedAt = uint64(block.timestamp.sub(uint256(_timeout)));
}
/**
* @notice called by oracles when they have witnessed a need to update
* @param _roundId is the ID of the round this submission pertains to
* @param _submission is the updated data that the oracle is submitting
*/
function submit(uint256 _roundId, int256 _submission) external {
bytes memory error = validateOracleRound(msg.sender, uint32(_roundId));
require(
_submission >= minSubmissionValue,
"value below minSubmissionValue"
);
require(
_submission <= maxSubmissionValue,
"value above maxSubmissionValue"
);
require(error.length == 0, string(error));
oracleInitializeNewRound(uint32(_roundId));
recordSubmission(_submission, uint32(_roundId));
(bool updated, int256 newAnswer) = updateRoundAnswer(uint32(_roundId));
payOracle(uint32(_roundId));
deleteRoundDetails(uint32(_roundId));
if (updated) {
validateAnswer(uint32(_roundId), newAnswer);
}
}
/**
* @notice called by the owner to remove and add new oracles as well as
* update the round related parameters that pertain to total oracle count
* @param _removed is the list of addresses for the new Oracles being removed
* @param _added is the list of addresses for the new Oracles being added
* @param _addedAdmins is the admin addresses for the new respective _added
* list. Only this address is allowed to access the respective oracle's funds
* @param _minSubmissions is the new minimum submission count for each round
* @param _maxSubmissions is the new maximum submission count for each round
* @param _restartDelay is the number of rounds an Oracle has to wait before
* they can initiate a round
*/
function changeOracles(
address[] calldata _removed,
address[] calldata _added,
address[] calldata _addedAdmins,
uint32 _minSubmissions,
uint32 _maxSubmissions,
uint32 _restartDelay
) external onlyOwner() {
for (uint256 i = 0; i < _removed.length; i++) {
removeOracle(_removed[i]);
}
require(
_added.length == _addedAdmins.length,
"need same oracle and admin count"
);
require(
uint256(oracleCount()).add(_added.length) <= MAX_ORACLE_COUNT,
"max oracles allowed"
);
for (uint256 i = 0; i < _added.length; i++) {
addOracle(_added[i], _addedAdmins[i]);
}
updateFutureRounds(
paymentAmount,
_minSubmissions,
_maxSubmissions,
_restartDelay,
timeout
);
}
/**
* @notice update the round and payment related parameters for subsequent
* rounds
* @param _paymentAmount is the payment amount for subsequent rounds
* @param _minSubmissions is the new minimum submission count for each round
* @param _maxSubmissions is the new maximum submission count for each round
* @param _restartDelay is the number of rounds an Oracle has to wait before
* they can initiate a round
*/
function updateFutureRounds(
uint128 _paymentAmount,
uint32 _minSubmissions,
uint32 _maxSubmissions,
uint32 _restartDelay,
uint32 _timeout
) public onlyOwner() {
uint32 oracleNum = oracleCount(); // Save on storage reads
require(
_maxSubmissions >= _minSubmissions,
"max must equal/exceed min"
);
require(oracleNum >= _maxSubmissions, "max cannot exceed total");
require(
oracleNum == 0 || oracleNum > _restartDelay,
"delay cannot exceed total"
);
require(
recordedFunds.available >= requiredReserve(_paymentAmount),
"insufficient funds for payment"
);
if (oracleCount() > 0) {
require(_minSubmissions > 0, "min must be greater than 0");
}
paymentAmount = _paymentAmount;
minSubmissionCount = _minSubmissions;
maxSubmissionCount = _maxSubmissions;
restartDelay = _restartDelay;
timeout = _timeout;
emit RoundDetailsUpdated(
paymentAmount,
_minSubmissions,
_maxSubmissions,
_restartDelay,
_timeout
);
}
/**
* @notice the amount of payment yet to be withdrawn by oracles
*/
function allocatedFunds() external view returns (uint128) {
return recordedFunds.allocated;
}
/**
* @notice the amount of future funding available to oracles
*/
function availableFunds() external view returns (uint128) {
return recordedFunds.available;
}
/**
* @notice recalculate the amount of LINK available for payouts
*/
function updateAvailableFunds() public {
Funds memory funds = recordedFunds;
uint256 nowAvailable =
linkToken.balanceOf(address(this)).sub(funds.allocated);
if (funds.available != nowAvailable) {
recordedFunds.available = uint128(nowAvailable);
emit AvailableFundsUpdated(nowAvailable);
}
}
/**
* @notice returns the number of oracles
*/
function oracleCount() public view returns (uint8) {
return uint8(oracleAddresses.length);
}
/**
* @notice returns an array of addresses containing the oracles on contract
*/
function getOracles() external view returns (address[] memory) {
return oracleAddresses;
}
/**
* @notice get the most recently reported answer
*
* @dev #[deprecated] Use latestRoundData instead. This does not error if no
* answer has been reached, it will simply return 0. Either wait to point to
* an already answered Aggregator or use the recommended latestRoundData
* instead which includes better verification information.
*/
function latestAnswer() public view virtual override returns (int256) {
return rounds[latestRoundId].answer;
}
/**
* @notice get the most recent updated at timestamp
*
* @dev #[deprecated] Use latestRoundData instead. This does not error if no
* answer has been reached, it will simply return 0. Either wait to point to
* an already answered Aggregator or use the recommended latestRoundData
* instead which includes better verification information.
*/
function latestTimestamp() public view virtual override returns (uint256) {
return rounds[latestRoundId].updatedAt;
}
/**
* @notice get the ID of the last updated round
*
* @dev #[deprecated] Use latestRoundData instead. This does not error if no
* answer has been reached, it will simply return 0. Either wait to point to
* an already answered Aggregator or use the recommended latestRoundData
* instead which includes better verification information.
*/
function latestRound() public view virtual override returns (uint256) {
return latestRoundId;
}
/**
* @notice get past rounds answers
* @param _roundId the round number to retrieve the answer for
*
* @dev #[deprecated] Use getRoundData instead. This does not error if no
* answer has been reached, it will simply return 0. Either wait to point to
* an already answered Aggregator or use the recommended getRoundData
* instead which includes better verification information.
*/
function getAnswer(uint256 _roundId)
public
view
virtual
override
returns (int256)
{
if (validRoundId(_roundId)) {
return rounds[uint32(_roundId)].answer;
}
return 0;
}
/**
* @notice get timestamp when an answer was last updated
* @param _roundId the round number to retrieve the updated timestamp for
*
* @dev #[deprecated] Use getRoundData instead. This does not error if no
* answer has been reached, it will simply return 0. Either wait to point to
* an already answered Aggregator or use the recommended getRoundData
* instead which includes better verification information.
*/
function getTimestamp(uint256 _roundId)
public
view
virtual
override
returns (uint256)
{
if (validRoundId(_roundId)) {
return rounds[uint32(_roundId)].updatedAt;
}
return 0;
}
/**
* @notice get data about a round. Consumers are encouraged to check
* that they're receiving fresh data by inspecting the updatedAt and
* answeredInRound return values.
* @param _roundId the round ID to retrieve the round data for
* @return roundId is the round ID for which data was retrieved
* @return answer is the answer for the given round
* @return startedAt is the timestamp when the round was started. This is 0
* if the round hasn't been started yet.
* @return updatedAt is the timestamp when the round last was updated (i.e.
* answer was last computed)
* @return answeredInRound is the round ID of the round in which the answer
* was computed. answeredInRound may be smaller than roundId when the round
* timed out. answeredInRound is equal to roundId when the round didn't time out
* and was completed regularly.
* @dev Note that for in-progress rounds (i.e. rounds that haven't yet received
* maxSubmissions) answer and updatedAt may change between queries.
*/
function getRoundData(uint80 _roundId)
public
view
virtual
override
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
)
{
Round memory r = rounds[uint32(_roundId)];
require(
r.answeredInRound > 0 && validRoundId(_roundId),
V3_NO_DATA_ERROR
);
return (
_roundId,
r.answer,
r.startedAt,
r.updatedAt,
r.answeredInRound
);
}
/**
* @notice get data about the latest round. Consumers are encouraged to check
* that they're receiving fresh data by inspecting the updatedAt and
* answeredInRound return values. Consumers are encouraged to
* use this more fully featured method over the "legacy" latestRound/
* latestAnswer/latestTimestamp functions. Consumers are encouraged to check
* that they're receiving fresh data by inspecting the updatedAt and
* answeredInRound return values.
* @return roundId is the round ID for which data was retrieved
* @return answer is the answer for the given round
* @return startedAt is the timestamp when the round was started. This is 0
* if the round hasn't been started yet.
* @return updatedAt is the timestamp when the round last was updated (i.e.
* answer was last computed)
* @return answeredInRound is the round ID of the round in which the answer
* was computed. answeredInRound may be smaller than roundId when the round
* timed out. answeredInRound is equal to roundId when the round didn't time
* out and was completed regularly.
* @dev Note that for in-progress rounds (i.e. rounds that haven't yet
* received maxSubmissions) answer and updatedAt may change between queries.
*/
function latestRoundData()
public
view
virtual
override
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
)
{
return getRoundData(latestRoundId);
}
/**
* @notice query the available amount of LINK for an oracle to withdraw
*/
function withdrawablePayment(address _oracle)
external
view
returns (uint256)
{
return oracles[_oracle].withdrawable;
}
/**
* @notice transfers the oracle's LINK to another address. Can only be called
* by the oracle's admin.
* @param _oracle is the oracle whose LINK is transferred
* @param _recipient is the address to send the LINK to
* @param _amount is the amount of LINK to send
*/
function withdrawPayment(
address _oracle,
address _recipient,
uint256 _amount
) external {
require(oracles[_oracle].admin == msg.sender, "only callable by admin");
// Safe to downcast _amount because the total amount of LINK is less than 2^128.
uint128 amount = uint128(_amount);
uint128 available = oracles[_oracle].withdrawable;
require(available >= amount, "insufficient withdrawable funds");
oracles[_oracle].withdrawable = available.sub(amount);
recordedFunds.allocated = recordedFunds.allocated.sub(amount);
assert(linkToken.transfer(_recipient, uint256(amount)));
}
/**
* @notice transfers the owner's LINK to another address
* @param _recipient is the address to send the LINK to
* @param _amount is the amount of LINK to send
*/
function withdrawFunds(address _recipient, uint256 _amount)
external
onlyOwner()
{
uint256 available = uint256(recordedFunds.available);
require(
available.sub(requiredReserve(paymentAmount)) >= _amount,
"insufficient reserve funds"
);
require(
linkToken.transfer(_recipient, _amount),
"token transfer failed"
);
updateAvailableFunds();
}
/**
* @notice get the admin address of an oracle
* @param _oracle is the address of the oracle whose admin is being queried
*/
function getAdmin(address _oracle) external view returns (address) {
return oracles[_oracle].admin;
}
/**
* @notice transfer the admin address for an oracle
* @param _oracle is the address of the oracle whose admin is being transferred
* @param _newAdmin is the new admin address
*/
function transferAdmin(address _oracle, address _newAdmin) external {
require(oracles[_oracle].admin == msg.sender, "only callable by admin");
oracles[_oracle].pendingAdmin = _newAdmin;
emit OracleAdminUpdateRequested(_oracle, msg.sender, _newAdmin);
}
/**
* @notice accept the admin address transfer for an oracle
* @param _oracle is the address of the oracle whose admin is being transferred
*/
function acceptAdmin(address _oracle) external {
require(
oracles[_oracle].pendingAdmin == msg.sender,
"only callable by pending admin"
);
oracles[_oracle].pendingAdmin = address(0);
oracles[_oracle].admin = msg.sender;
emit OracleAdminUpdated(_oracle, msg.sender);
}
/**
* @notice allows non-oracles to request a new round
*/
function requestNewRound() external returns (uint80) {
require(requesters[msg.sender].authorized, "not authorized requester");
uint32 current = reportingRoundId;
require(
rounds[current].updatedAt > 0 || timedOut(current),
"prev round must be supersedable"
);
uint32 newRoundId = current.add(1);
requesterInitializeNewRound(newRoundId);
return newRoundId;
}
/**
* @notice allows the owner to specify new non-oracles to start new rounds
* @param _requester is the address to set permissions for
* @param _authorized is a boolean specifying whether they can start new rounds or not
* @param _delay is the number of rounds the requester must wait before starting another round
*/
function setRequesterPermissions(
address _requester,
bool _authorized,
uint32 _delay
) external onlyOwner() {
if (requesters[_requester].authorized == _authorized) return;
if (_authorized) {
requesters[_requester].authorized = _authorized;
requesters[_requester].delay = _delay;
} else {
delete requesters[_requester];
}
emit RequesterPermissionsSet(_requester, _authorized, _delay);
}
/**
* @notice called through LINK's transferAndCall to update available funds
* in the same transaction as the funds were transferred to the aggregator
* @param _data is mostly ignored. It is checked for length, to be sure
* nothing strange is passed in.
*/
function onTokenTransfer(
address,
uint256,
bytes calldata _data
) external {
require(_data.length == 0, "transfer doesn't accept calldata");
updateAvailableFunds();
}
/**
* @notice a method to provide all current info oracles need. Intended only
* only to be callable by oracles. Not for use by contracts to read state.
* @param _oracle the address to look up information for.
*/
function oracleRoundState(address _oracle, uint32 _queriedRoundId)
external
view
returns (
bool _eligibleToSubmit,
uint32 _roundId,
int256 _latestSubmission,
uint64 _startedAt,
uint64 _timeout,
uint128 _availableFunds,
uint8 _oracleCount,
uint128 _paymentAmount
)
{
require(msg.sender == tx.origin, "off-chain reading only");
if (_queriedRoundId > 0) {
Round storage round = rounds[_queriedRoundId];
RoundDetails storage details = details[_queriedRoundId];
return (
eligibleForSpecificRound(_oracle, _queriedRoundId),
_queriedRoundId,
oracles[_oracle].latestSubmission,
round.startedAt,
details.timeout,
recordedFunds.available,
oracleCount(),
(round.startedAt > 0 ? details.paymentAmount : paymentAmount)
);
} else {
return oracleRoundStateSuggestRound(_oracle);
}
}
/**
* @notice method to update the address which does external data validation.
* @param _newValidator designates the address of the new validation contract.
*/
function setValidator(address _newValidator) public onlyOwner() {
address previous = address(validator);
if (previous != _newValidator) {
validator = AggregatorValidatorInterface(_newValidator);
emit ValidatorUpdated(previous, _newValidator);
}
}
/**
* Private
*/
function initializeNewRound(uint32 _roundId) private {
updateTimedOutRoundInfo(_roundId.sub(1));
reportingRoundId = _roundId;
RoundDetails memory nextDetails =
RoundDetails(
new int256[](0),
maxSubmissionCount,
minSubmissionCount,
timeout,
paymentAmount
);
details[_roundId] = nextDetails;
rounds[_roundId].startedAt = uint64(block.timestamp);
emit NewRound(_roundId, msg.sender, rounds[_roundId].startedAt);
}
function oracleInitializeNewRound(uint32 _roundId) private {
if (!newRound(_roundId)) return;
uint256 lastStarted = oracles[msg.sender].lastStartedRound; // cache storage reads
if (_roundId <= lastStarted + restartDelay && lastStarted != 0) return;
initializeNewRound(_roundId);
oracles[msg.sender].lastStartedRound = _roundId;
}
function requesterInitializeNewRound(uint32 _roundId) private {
if (!newRound(_roundId)) return;
uint256 lastStarted = requesters[msg.sender].lastStartedRound; // cache storage reads
require(
_roundId > lastStarted + requesters[msg.sender].delay ||
lastStarted == 0,
"must delay requests"
);
initializeNewRound(_roundId);
requesters[msg.sender].lastStartedRound = _roundId;
}
function updateTimedOutRoundInfo(uint32 _roundId) private {
if (!timedOut(_roundId)) return;
uint32 prevId = _roundId.sub(1);
rounds[_roundId].answer = rounds[prevId].answer;
rounds[_roundId].answeredInRound = rounds[prevId].answeredInRound;
rounds[_roundId].updatedAt = uint64(block.timestamp);
delete details[_roundId];
}
function eligibleForSpecificRound(address _oracle, uint32 _queriedRoundId)
private
view
returns (bool _eligible)
{
if (rounds[_queriedRoundId].startedAt > 0) {
return
acceptingSubmissions(_queriedRoundId) &&
validateOracleRound(_oracle, _queriedRoundId).length == 0;
} else {
return
delayed(_oracle, _queriedRoundId) &&
validateOracleRound(_oracle, _queriedRoundId).length == 0;
}
}
function oracleRoundStateSuggestRound(address _oracle)
private
view
returns (
bool _eligibleToSubmit,
uint32 _roundId,
int256 _latestSubmission,
uint64 _startedAt,
uint64 _timeout,
uint128 _availableFunds,
uint8 _oracleCount,
uint128 _paymentAmount
)
{
Round storage round = rounds[0];
OracleStatus storage oracle = oracles[_oracle];
bool shouldSupersede =
oracle.lastReportedRound == reportingRoundId ||
!acceptingSubmissions(reportingRoundId);
// Instead of nudging oracles to submit to the next round, the inclusion of
// the shouldSupersede bool in the if condition pushes them towards
// submitting in a currently open round.
if (supersedable(reportingRoundId) && shouldSupersede) {
_roundId = reportingRoundId.add(1);
round = rounds[_roundId];
_paymentAmount = paymentAmount;
_eligibleToSubmit = delayed(_oracle, _roundId);
} else {
_roundId = reportingRoundId;
round = rounds[_roundId];
_paymentAmount = details[_roundId].paymentAmount;
_eligibleToSubmit = acceptingSubmissions(_roundId);
}
if (validateOracleRound(_oracle, _roundId).length != 0) {
_eligibleToSubmit = false;
}
return (
_eligibleToSubmit,
_roundId,
oracle.latestSubmission,
round.startedAt,
details[_roundId].timeout,
recordedFunds.available,
oracleCount(),
_paymentAmount
);
}
function updateRoundAnswer(uint32 _roundId)
internal
returns (bool, int256)
{
if (
details[_roundId].submissions.length <
details[_roundId].minSubmissions
) {
return (false, 0);
}
int256 newAnswer =
Median.calculateInplace(details[_roundId].submissions);
rounds[_roundId].answer = newAnswer;
rounds[_roundId].updatedAt = uint64(block.timestamp);
rounds[_roundId].answeredInRound = _roundId;
latestRoundId = _roundId;
emit AnswerUpdated(newAnswer, _roundId, now);
return (true, newAnswer);
}
function validateAnswer(uint32 _roundId, int256 _newAnswer) private {
AggregatorValidatorInterface av = validator; // cache storage reads
if (address(av) == address(0)) return;
uint32 prevRound = _roundId.sub(1);
uint32 prevAnswerRoundId = rounds[prevRound].answeredInRound;
int256 prevRoundAnswer = rounds[prevRound].answer;
// We do not want the validator to ever prevent reporting, so we limit its
// gas usage and catch any errors that may arise.
try
av.validate{gas: VALIDATOR_GAS_LIMIT}(
prevAnswerRoundId,
prevRoundAnswer,
_roundId,
_newAnswer
)
{} catch {}
}
function payOracle(uint32 _roundId) private {
uint128 payment = details[_roundId].paymentAmount;
Funds memory funds = recordedFunds;
funds.available = funds.available.sub(payment);
funds.allocated = funds.allocated.add(payment);
recordedFunds = funds;
oracles[msg.sender].withdrawable = oracles[msg.sender].withdrawable.add(
payment
);
emit AvailableFundsUpdated(funds.available);
}
function recordSubmission(int256 _submission, uint32 _roundId) private {
require(
acceptingSubmissions(_roundId),
"round not accepting submissions"
);
details[_roundId].submissions.push(_submission);
oracles[msg.sender].lastReportedRound = _roundId;
oracles[msg.sender].latestSubmission = _submission;
emit SubmissionReceived(_submission, _roundId, msg.sender);
}
function deleteRoundDetails(uint32 _roundId) private {
if (
details[_roundId].submissions.length <
details[_roundId].maxSubmissions
) return;
delete details[_roundId];
}
function timedOut(uint32 _roundId) private view returns (bool) {
uint64 startedAt = rounds[_roundId].startedAt;
uint32 roundTimeout = details[_roundId].timeout;
return
startedAt > 0 &&
roundTimeout > 0 &&
startedAt.add(roundTimeout) < block.timestamp;
}
function getStartingRound(address _oracle) private view returns (uint32) {
uint32 currentRound = reportingRoundId;
if (currentRound != 0 && currentRound == oracles[_oracle].endingRound) {
return currentRound;
}
return currentRound.add(1);
}
function previousAndCurrentUnanswered(uint32 _roundId, uint32 _rrId)
private
view
returns (bool)
{
return _roundId.add(1) == _rrId && rounds[_rrId].updatedAt == 0;
}
function requiredReserve(uint256 payment) private view returns (uint256) {
return payment.mul(oracleCount()).mul(RESERVE_ROUNDS);
}
function addOracle(address _oracle, address _admin) private {
require(!oracleEnabled(_oracle), "oracle already enabled");
require(_admin != address(0), "cannot set admin to 0");
require(
oracles[_oracle].admin == address(0) ||
oracles[_oracle].admin == _admin,
"owner cannot overwrite admin"
);
oracles[_oracle].startingRound = getStartingRound(_oracle);
oracles[_oracle].endingRound = ROUND_MAX;
oracles[_oracle].index = uint16(oracleAddresses.length);
oracleAddresses.push(_oracle);
oracles[_oracle].admin = _admin;
emit OraclePermissionsUpdated(_oracle, true);
emit OracleAdminUpdated(_oracle, _admin);
}
function removeOracle(address _oracle) private {
require(oracleEnabled(_oracle), "oracle not enabled");
oracles[_oracle].endingRound = reportingRoundId.add(1);
address tail = oracleAddresses[uint256(oracleCount()).sub(1)];
uint16 index = oracles[_oracle].index;
oracles[tail].index = index;
delete oracles[_oracle].index;
oracleAddresses[index] = tail;
oracleAddresses.pop();
emit OraclePermissionsUpdated(_oracle, false);
}
function validateOracleRound(address _oracle, uint32 _roundId)
private
view
returns (bytes memory)
{
// cache storage reads
uint32 startingRound = oracles[_oracle].startingRound;
uint32 rrId = reportingRoundId;
if (startingRound == 0) return "not enabled oracle";
if (startingRound > _roundId) return "not yet enabled oracle";
if (oracles[_oracle].endingRound < _roundId)
return "no longer allowed oracle";
if (oracles[_oracle].lastReportedRound >= _roundId)
return "cannot report on previous rounds";
if (
_roundId != rrId &&
_roundId != rrId.add(1) &&
!previousAndCurrentUnanswered(_roundId, rrId)
) return "invalid round to report";
if (_roundId != 1 && !supersedable(_roundId.sub(1)))
return "previous round not supersedable";
}
function supersedable(uint32 _roundId) private view returns (bool) {
return rounds[_roundId].updatedAt > 0 || timedOut(_roundId);
}
function oracleEnabled(address _oracle) private view returns (bool) {
return oracles[_oracle].endingRound == ROUND_MAX;
}
function acceptingSubmissions(uint32 _roundId) private view returns (bool) {
return details[_roundId].maxSubmissions != 0;
}
function delayed(address _oracle, uint32 _roundId)
private
view
returns (bool)
{
uint256 lastStarted = oracles[_oracle].lastStartedRound;
return _roundId > lastStarted + restartDelay || lastStarted == 0;
}
function newRound(uint32 _roundId) private view returns (bool) {
return _roundId == reportingRoundId.add(1);
}
function validRoundId(uint256 _roundId) private view returns (bool) {
return _roundId <= ROUND_MAX;
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
/**
* @notice Interface for securely interacting with Chainlink aggregators
*/
interface IOracleAdapter {
struct Value {
uint256 value;
uint256 periodEnd;
}
/// @notice Event fired when asset's pricing source (aggregator) is updated
event AssetSourceUpdated(address indexed asset, address indexed source);
/// @notice Event fired when the TVL aggregator address is updated
event TvlSourceUpdated(address indexed source);
/**
* @notice Set the TVL source (aggregator)
* @param source The new TVL source (aggregator)
*/
function emergencySetTvlSource(address source) external;
/**
* @notice Set an asset's price source (aggregator)
* @param asset The asset to change the source of
* @param source The new source (aggregator)
*/
function emergencySetAssetSource(address asset, address source) external;
/**
* @notice Set multiple assets' pricing sources
* @param assets An array of assets (tokens)
* @param sources An array of price sources (aggregators)
*/
function emergencySetAssetSources(
address[] memory assets,
address[] memory sources
) external;
/**
* @notice Retrieve the asset's price from its pricing source
* @param asset The asset address
* @return The price of the asset
*/
function getAssetPrice(address asset) external view returns (uint256);
/**
* @notice Retrieve the deployed TVL from the TVL aggregator
* @return The TVL
*/
function getTvl() external view returns (uint256);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IOracleAdapter} from "./IOracleAdapter.sol";
interface IOverrideOracle is IOracleAdapter {
/**
* @notice Event fired when asset value is set manually
* @param asset The asset that is being overridden
* @param value The new value used for the override
* @param period The number of blocks the override will be active for
* @param periodEnd The block on which the override ends
*/
event AssetValueSet(
address asset,
uint256 value,
uint256 period,
uint256 periodEnd
);
/**
* @notice Event fired when manually submitted asset value is
* invalidated, allowing usual Chainlink pricing.
*/
event AssetValueUnset(address asset);
/**
* @notice Event fired when deployed TVL is set manually
* @param value The new value used for the override
* @param period The number of blocks the override will be active for
* @param periodEnd The block on which the override ends
*/
event TvlSet(uint256 value, uint256 period, uint256 periodEnd);
/**
* @notice Event fired when manually submitted TVL is
* invalidated, allowing usual Chainlink pricing.
*/
event TvlUnset();
/**
* @notice Manually override the asset pricing source with a value
* @param asset The asset that is being overriden
* @param value asset value to return instead of from Chainlink
* @param period length of time, in number of blocks, to use manual override
*/
function emergencySetAssetValue(
address asset,
uint256 value,
uint256 period
) external;
/**
* @notice Revoke manually set value, allowing usual Chainlink pricing
* @param asset address of asset to price
*/
function emergencyUnsetAssetValue(address asset) external;
/**
* @notice Manually override the TVL source with a value
* @param value TVL to return instead of from Chainlink
* @param period length of time, in number of blocks, to use manual override
*/
function emergencySetTvl(uint256 value, uint256 period) external;
/// @notice Revoke manually set value, allowing usual Chainlink pricing
function emergencyUnsetTvl() external;
/// @notice Check if TVL has active manual override
function hasTvlOverride() external view returns (bool);
/**
* @notice Check if asset has active manual override
* @param asset address of the asset
* @return `true` if manual override is active
*/
function hasAssetOverride(address asset) external view returns (bool);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IOracleAdapter} from "./IOracleAdapter.sol";
/**
* @notice For an `IOracleAdapter` that can be locked and unlocked
*/
interface ILockingOracle is IOracleAdapter {
/// @notice Event fired when using the default lock
event DefaultLocked(address locker, uint256 defaultPeriod, uint256 lockEnd);
/// @notice Event fired when using a specified lock period
event Locked(address locker, uint256 activePeriod, uint256 lockEnd);
/// @notice Event fired when changing the default locking period
event DefaultLockPeriodChanged(uint256 newPeriod);
/// @notice Event fired when unlocking the adapter
event Unlocked();
/// @notice Event fired when updating the threshold for stale data
event ChainlinkStalePeriodUpdated(uint256 period);
/// @notice Block price/value retrieval for the default locking duration
function lock() external;
/**
* @notice Block price/value retrieval for the specified duration.
* @param period number of blocks to block retrieving values
*/
function lockFor(uint256 period) external;
/**
* @notice Unblock price/value retrieval. Should only be callable
* by the Emergency Safe.
*/
function emergencyUnlock() external;
/**
* @notice Set the length of time before values can be retrieved.
* @param newPeriod number of blocks before values can be retrieved
*/
function setDefaultLockPeriod(uint256 newPeriod) external;
/**
* @notice Set the length of time before an agg value is considered stale.
* @param chainlinkStalePeriod_ the length of time in seconds
*/
function setChainlinkStalePeriod(uint256 chainlinkStalePeriod_) external;
/**
* @notice Get the length of time, in number of blocks, before values
* can be retrieved.
*/
function defaultLockPeriod() external returns (uint256 period);
/// @notice Check if the adapter is blocked from retrieving values.
function isLocked() external view returns (bool);
}
pragma solidity ^0.6.0;
import "./vendor/SafeMath.sol";
import "./SignedSafeMath.sol";
library Median {
using SignedSafeMath for int256;
int256 constant INT_MAX = 2**255-1;
/**
* @notice Returns the sorted middle, or the average of the two middle indexed items if the
* array has an even number of elements.
* @dev The list passed as an argument isn't modified.
* @dev This algorithm has expected runtime O(n), but for adversarially chosen inputs
* the runtime is O(n^2).
* @param list The list of elements to compare
*/
function calculate(int256[] memory list)
internal
pure
returns (int256)
{
return calculateInplace(copy(list));
}
/**
* @notice See documentation for function calculate.
* @dev The list passed as an argument may be permuted.
*/
function calculateInplace(int256[] memory list)
internal
pure
returns (int256)
{
require(0 < list.length, "list must not be empty");
uint256 len = list.length;
uint256 middleIndex = len / 2;
if (len % 2 == 0) {
int256 median1;
int256 median2;
(median1, median2) = quickselectTwo(list, 0, len - 1, middleIndex - 1, middleIndex);
return SignedSafeMath.avg(median1, median2);
} else {
return quickselect(list, 0, len - 1, middleIndex);
}
}
/**
* @notice Maximum length of list that shortSelectTwo can handle
*/
uint256 constant SHORTSELECTTWO_MAX_LENGTH = 7;
/**
* @notice Select the k1-th and k2-th element from list of length at most 7
* @dev Uses an optimal sorting network
*/
function shortSelectTwo(
int256[] memory list,
uint256 lo,
uint256 hi,
uint256 k1,
uint256 k2
)
private
pure
returns (int256 k1th, int256 k2th)
{
// Uses an optimal sorting network (https://en.wikipedia.org/wiki/Sorting_network)
// for lists of length 7. Network layout is taken from
// http://jgamble.ripco.net/cgi-bin/nw.cgi?inputs=7&algorithm=hibbard&output=svg
uint256 len = hi + 1 - lo;
int256 x0 = list[lo + 0];
int256 x1 = 1 < len ? list[lo + 1] : INT_MAX;
int256 x2 = 2 < len ? list[lo + 2] : INT_MAX;
int256 x3 = 3 < len ? list[lo + 3] : INT_MAX;
int256 x4 = 4 < len ? list[lo + 4] : INT_MAX;
int256 x5 = 5 < len ? list[lo + 5] : INT_MAX;
int256 x6 = 6 < len ? list[lo + 6] : INT_MAX;
if (x0 > x1) {(x0, x1) = (x1, x0);}
if (x2 > x3) {(x2, x3) = (x3, x2);}
if (x4 > x5) {(x4, x5) = (x5, x4);}
if (x0 > x2) {(x0, x2) = (x2, x0);}
if (x1 > x3) {(x1, x3) = (x3, x1);}
if (x4 > x6) {(x4, x6) = (x6, x4);}
if (x1 > x2) {(x1, x2) = (x2, x1);}
if (x5 > x6) {(x5, x6) = (x6, x5);}
if (x0 > x4) {(x0, x4) = (x4, x0);}
if (x1 > x5) {(x1, x5) = (x5, x1);}
if (x2 > x6) {(x2, x6) = (x6, x2);}
if (x1 > x4) {(x1, x4) = (x4, x1);}
if (x3 > x6) {(x3, x6) = (x6, x3);}
if (x2 > x4) {(x2, x4) = (x4, x2);}
if (x3 > x5) {(x3, x5) = (x5, x3);}
if (x3 > x4) {(x3, x4) = (x4, x3);}
uint256 index1 = k1 - lo;
if (index1 == 0) {k1th = x0;}
else if (index1 == 1) {k1th = x1;}
else if (index1 == 2) {k1th = x2;}
else if (index1 == 3) {k1th = x3;}
else if (index1 == 4) {k1th = x4;}
else if (index1 == 5) {k1th = x5;}
else if (index1 == 6) {k1th = x6;}
else {revert("k1 out of bounds");}
uint256 index2 = k2 - lo;
if (k1 == k2) {return (k1th, k1th);}
else if (index2 == 0) {return (k1th, x0);}
else if (index2 == 1) {return (k1th, x1);}
else if (index2 == 2) {return (k1th, x2);}
else if (index2 == 3) {return (k1th, x3);}
else if (index2 == 4) {return (k1th, x4);}
else if (index2 == 5) {return (k1th, x5);}
else if (index2 == 6) {return (k1th, x6);}
else {revert("k2 out of bounds");}
}
/**
* @notice Selects the k-th ranked element from list, looking only at indices between lo and hi
* (inclusive). Modifies list in-place.
*/
function quickselect(int256[] memory list, uint256 lo, uint256 hi, uint256 k)
private
pure
returns (int256 kth)
{
require(lo <= k);
require(k <= hi);
while (lo < hi) {
if (hi - lo < SHORTSELECTTWO_MAX_LENGTH) {
int256 ignore;
(kth, ignore) = shortSelectTwo(list, lo, hi, k, k);
return kth;
}
uint256 pivotIndex = partition(list, lo, hi);
if (k <= pivotIndex) {
// since pivotIndex < (original hi passed to partition),
// termination is guaranteed in this case
hi = pivotIndex;
} else {
// since (original lo passed to partition) <= pivotIndex,
// termination is guaranteed in this case
lo = pivotIndex + 1;
}
}
return list[lo];
}
/**
* @notice Selects the k1-th and k2-th ranked elements from list, looking only at indices between
* lo and hi (inclusive). Modifies list in-place.
*/
function quickselectTwo(
int256[] memory list,
uint256 lo,
uint256 hi,
uint256 k1,
uint256 k2
)
internal // for testing
pure
returns (int256 k1th, int256 k2th)
{
require(k1 < k2);
require(lo <= k1 && k1 <= hi);
require(lo <= k2 && k2 <= hi);
while (true) {
if (hi - lo < SHORTSELECTTWO_MAX_LENGTH) {
return shortSelectTwo(list, lo, hi, k1, k2);
}
uint256 pivotIdx = partition(list, lo, hi);
if (k2 <= pivotIdx) {
hi = pivotIdx;
} else if (pivotIdx < k1) {
lo = pivotIdx + 1;
} else {
assert(k1 <= pivotIdx && pivotIdx < k2);
k1th = quickselect(list, lo, pivotIdx, k1);
k2th = quickselect(list, pivotIdx + 1, hi, k2);
return (k1th, k2th);
}
}
}
/**
* @notice Partitions list in-place using Hoare's partitioning scheme.
* Only elements of list between indices lo and hi (inclusive) will be modified.
* Returns an index i, such that:
* - lo <= i < hi
* - forall j in [lo, i]. list[j] <= list[i]
* - forall j in [i, hi]. list[i] <= list[j]
*/
function partition(int256[] memory list, uint256 lo, uint256 hi)
private
pure
returns (uint256)
{
// We don't care about overflow of the addition, because it would require a list
// larger than any feasible computer's memory.
int256 pivot = list[(lo + hi) / 2];
lo -= 1; // this can underflow. that's intentional.
hi += 1;
while (true) {
do {
lo += 1;
} while (list[lo] < pivot);
do {
hi -= 1;
} while (list[hi] > pivot);
if (lo < hi) {
(list[lo], list[hi]) = (list[hi], list[lo]);
} else {
// Let orig_lo and orig_hi be the original values of lo and hi passed to partition.
// Then, hi < orig_hi, because hi decreases *strictly* monotonically
// in each loop iteration and
// - either list[orig_hi] > pivot, in which case the first loop iteration
// will achieve hi < orig_hi;
// - or list[orig_hi] <= pivot, in which case at least two loop iterations are
// needed:
// - lo will have to stop at least once in the interval
// [orig_lo, (orig_lo + orig_hi)/2]
// - (orig_lo + orig_hi)/2 < orig_hi
return hi;
}
}
}
/**
* @notice Makes an in-memory copy of the array passed in
* @param list Reference to the array to be copied
*/
function copy(int256[] memory list)
private
pure
returns(int256[] memory)
{
int256[] memory list2 = new int256[](list.length);
for (uint256 i = 0; i < list.length; i++) {
list2[i] = list[i];
}
return list2;
}
}
pragma solidity ^0.6.0;
/**
* @title The Owned contract
* @notice A contract with helpers for basic contract ownership.
*/
contract Owned {
address payable public owner;
address private pendingOwner;
event OwnershipTransferRequested(
address indexed from,
address indexed to
);
event OwnershipTransferred(
address indexed from,
address indexed to
);
constructor() public {
owner = msg.sender;
}
/**
* @dev Allows an owner to begin transferring ownership to a new address,
* pending.
*/
function transferOwnership(address _to)
external
onlyOwner()
{
pendingOwner = _to;
emit OwnershipTransferRequested(owner, _to);
}
/**
* @dev Allows an ownership transfer to be completed by the recipient.
*/
function acceptOwnership()
external
{
require(msg.sender == pendingOwner, "Must be proposed owner");
address oldOwner = owner;
owner = msg.sender;
pendingOwner = address(0);
emit OwnershipTransferred(oldOwner, msg.sender);
}
/**
* @dev Reverts if called by anyone other than the contract owner.
*/
modifier onlyOwner() {
require(msg.sender == owner, "Only callable by owner");
_;
}
}
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* This library is a version of Open Zeppelin's SafeMath, modified to support
* unsigned 128 bit integers.
*/
library SafeMath128 {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint128 a, uint128 b) internal pure returns (uint128) {
uint128 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint128 a, uint128 b) internal pure returns (uint128) {
require(b <= a, "SafeMath: subtraction overflow");
uint128 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint128 a, uint128 b) internal pure returns (uint128) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint128 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint128 a, uint128 b) internal pure returns (uint128) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint128 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint128 a, uint128 b) internal pure returns (uint128) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* This library is a version of Open Zeppelin's SafeMath, modified to support
* unsigned 32 bit integers.
*/
library SafeMath32 {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint32 a, uint32 b) internal pure returns (uint32) {
uint32 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint32 a, uint32 b) internal pure returns (uint32) {
require(b <= a, "SafeMath: subtraction overflow");
uint32 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint32 a, uint32 b) internal pure returns (uint32) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint32 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint32 a, uint32 b) internal pure returns (uint32) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint32 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint32 a, uint32 b) internal pure returns (uint32) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* This library is a version of Open Zeppelin's SafeMath, modified to support
* unsigned 64 bit integers.
*/
library SafeMath64 {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint64 a, uint64 b) internal pure returns (uint64) {
uint64 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint64 a, uint64 b) internal pure returns (uint64) {
require(b <= a, "SafeMath: subtraction overflow");
uint64 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint64 a, uint64 b) internal pure returns (uint64) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint64 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint64 a, uint64 b) internal pure returns (uint64) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint64 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint64 a, uint64 b) internal pure returns (uint64) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
pragma solidity >=0.6.0;
import "./AggregatorInterface.sol";
import "./AggregatorV3Interface.sol";
interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface
{
}
pragma solidity ^0.6.0;
interface AggregatorValidatorInterface {
function validate(
uint256 previousRoundId,
int256 previousAnswer,
uint256 currentRoundId,
int256 currentAnswer
) external returns (bool);
}
pragma solidity ^0.6.0;
interface LinkTokenInterface {
function allowance(address owner, address spender) external view returns (uint256 remaining);
function approve(address spender, uint256 value) external returns (bool success);
function balanceOf(address owner) external view returns (uint256 balance);
function decimals() external view returns (uint8 decimalPlaces);
function decreaseApproval(address spender, uint256 addedValue) external returns (bool success);
function increaseApproval(address spender, uint256 subtractedValue) external;
function name() external view returns (string memory tokenName);
function symbol() external view returns (string memory tokenSymbol);
function totalSupply() external view returns (uint256 totalTokensIssued);
function transfer(address to, uint256 value) external returns (bool success);
function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool success);
function transferFrom(address from, address to, uint256 value) external returns (bool success);
}
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
pragma solidity ^0.6.0;
library SignedSafeMath {
int256 constant private _INT256_MIN = -2**255;
/**
* @dev Multiplies two signed integers, reverts on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
/**
* @dev Integer division of two signed integers truncating the quotient, reverts on division by zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
/**
* @dev Subtracts two signed integers, reverts on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
/**
* @dev Adds two signed integers, reverts on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
/**
* @notice Computes average of two signed integers, ensuring that the computation
* doesn't overflow.
* @dev If the result is not an integer, it is rounded towards zero. For example,
* avg(-3, -4) = -3
*/
function avg(int256 _a, int256 _b)
internal
pure
returns (int256)
{
if ((_a < 0 && _b > 0) || (_a > 0 && _b < 0)) {
return add(_a, _b) / 2;
}
int256 remainder = (_a % 2 + _b % 2) / 2;
return add(add(_a / 2, _b / 2), remainder);
}
}
pragma solidity >=0.6.0;
interface AggregatorInterface {
function latestAnswer() external view returns (int256);
function latestTimestamp() external view returns (uint256);
function latestRound() external view returns (uint256);
function getAnswer(uint256 roundId) external view returns (int256);
function getTimestamp(uint256 roundId) external view returns (uint256);
event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt);
event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt);
}
pragma solidity >=0.6.0;
interface AggregatorV3Interface {
function decimals() external view returns (uint8);
function description() external view returns (string memory);
function version() external view returns (uint256);
// getRoundData and latestRoundData should both raise "No data present"
// if they do not have data to report, instead of returning unset values
// which could be misinterpreted as actual reported values.
function getRoundData(uint80 _roundId)
external
view
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
);
function latestRoundData()
external
view
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
);
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {IZap} from "contracts/lpaccount/Imports.sol";
import {
IAssetAllocation,
IERC20,
IDetailedERC20
} from "contracts/common/Imports.sol";
import {SafeERC20} from "contracts/libraries/Imports.sol";
import {
IBooster,
IBaseRewardPool
} from "contracts/protocols/convex/common/interfaces/Imports.sol";
import {CurveZapBase} from "contracts/protocols/curve/common/CurveZapBase.sol";
abstract contract ConvexZapBase is IZap, CurveZapBase {
using SafeERC20 for IERC20;
address internal constant CVX_ADDRESS =
0x4e3FBD56CD56c3e72c1403e103b45Db9da5B9D2B;
address internal constant BOOSTER_ADDRESS =
0xF403C135812408BFbE8713b5A23a04b3D48AAE31;
address internal immutable _LP_ADDRESS;
uint256 internal immutable _PID;
constructor(
address swapAddress,
address lpAddress,
uint256 pid,
uint256 denominator,
uint256 slippage,
uint256 nCoins
) public CurveZapBase(swapAddress, denominator, slippage, nCoins) {
_LP_ADDRESS = lpAddress;
_PID = pid;
}
function getLpTokenBalance(address account)
external
view
override
returns (uint256 lpBalance)
{
IBaseRewardPool rewardContract = _getRewardContract();
// Convex's staking token is issued 1:1 for deposited LP tokens
lpBalance = rewardContract.balanceOf(account);
}
/// @dev deposit LP tokens in Convex's Booster contract
function _depositToGauge() internal override {
IBooster booster = IBooster(BOOSTER_ADDRESS);
uint256 lpBalance = IERC20(_LP_ADDRESS).balanceOf(address(this));
IERC20(_LP_ADDRESS).safeApprove(BOOSTER_ADDRESS, 0);
IERC20(_LP_ADDRESS).safeApprove(BOOSTER_ADDRESS, lpBalance);
// deposit and mint staking tokens 1:1; bool is to stake
booster.deposit(_PID, lpBalance, true);
}
function _withdrawFromGauge(uint256 amount)
internal
override
returns (uint256 lpBalance)
{
IBaseRewardPool rewardContract = _getRewardContract();
// withdraw staked tokens and unwrap to LP tokens;
// bool is for claiming rewards at the same time
rewardContract.withdrawAndUnwrap(amount, false);
lpBalance = IERC20(_LP_ADDRESS).balanceOf(address(this));
}
function _claim() internal override {
// this will claim CRV and extra rewards
IBaseRewardPool rewardContract = _getRewardContract();
rewardContract.getReward();
}
function _getRewardContract() internal view returns (IBaseRewardPool) {
IBooster booster = IBooster(BOOSTER_ADDRESS);
IBooster.PoolInfo memory poolInfo = booster.poolInfo(_PID);
return IBaseRewardPool(poolInfo.crvRewards);
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {SafeMath} from "contracts/libraries/Imports.sol";
import {IERC20} from "contracts/common/Imports.sol";
import {ImmutableAssetAllocation} from "contracts/tvl/Imports.sol";
import {IRewardPool} from "./interfaces/IBaseRewardPool.sol";
interface ICurvePool {
function balances(uint256 coin) external view returns (uint256);
}
/**
* @title Periphery Contract for the Curve 3pool
* @author APY.Finance
* @notice This contract enables the APY.Finance system to retrieve the balance
* of an underlyer of a Curve LP token. The balance is used as part
* of the Chainlink computation of the deployed TVL. The primary
* `getUnderlyerBalance` function is invoked indirectly when a
* Chainlink node calls `balanceOf` on the APYAssetAllocationRegistry.
*/
contract ConvexAllocationBase {
using SafeMath for uint256;
/**
* @notice Returns the balance of an underlying token represented by
* an account's LP token balance.
* @param stableSwap the liquidity pool comprised of multiple underlyers
* @param rewardContract the staking contract for the LP tokens
* @param lpToken the LP token representing the share of the pool
* @param coin the index indicating which underlyer
* @return balance
*/
function getUnderlyerBalance(
address account,
address stableSwap,
address rewardContract,
address lpToken,
uint256 coin
) public view returns (uint256 balance) {
require(stableSwap != address(0), "INVALID_STABLESWAP");
require(rewardContract != address(0), "INVALID_GAUGE");
require(lpToken != address(0), "INVALID_LP_TOKEN");
uint256 poolBalance = getPoolBalance(stableSwap, coin);
(uint256 lpTokenBalance, uint256 lpTokenSupply) =
getLpTokenShare(account, rewardContract, lpToken);
balance = lpTokenBalance.mul(poolBalance).div(lpTokenSupply);
}
function getPoolBalance(address stableSwap, uint256 coin)
public
view
returns (uint256)
{
require(stableSwap != address(0), "INVALID_STABLESWAP");
return ICurvePool(stableSwap).balances(coin);
}
function getLpTokenShare(
address account,
address rewardContract,
address lpToken
) public view returns (uint256 balance, uint256 totalSupply) {
require(rewardContract != address(0), "INVALID_GAUGE");
require(lpToken != address(0), "INVALID_LP_TOKEN");
totalSupply = IERC20(lpToken).totalSupply();
// Need to be careful to not include the balance of `account`,
// since that is included in the Curve allocation.
balance = IRewardPool(rewardContract).balanceOf(account);
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {SafeMath} from "contracts/libraries/Imports.sol";
import {IERC20} from "contracts/common/Imports.sol";
import {ImmutableAssetAllocation} from "contracts/tvl/Imports.sol";
import {IRewardPool} from "./interfaces/IBaseRewardPool.sol";
interface ICurvePool {
function balances(int128 coin) external view returns (uint256);
}
/**
* @title Periphery Contract for the Curve 3pool
* @author APY.Finance
* @notice This contract enables the APY.Finance system to retrieve the balance
* of an underlyer of a Curve LP token. The balance is used as part
* of the Chainlink computation of the deployed TVL. The primary
* `getUnderlyerBalance` function is invoked indirectly when a
* Chainlink node calls `balanceOf` on the APYAssetAllocationRegistry.
*/
contract OldConvexAllocationBase {
using SafeMath for uint256;
/**
* @notice Returns the balance of an underlying token represented by
* an account's LP token balance.
* @param stableSwap the liquidity pool comprised of multiple underlyers
* @param rewardContract the staking contract for the LP tokens
* @param lpToken the LP token representing the share of the pool
* @param coin the index indicating which underlyer
* @return balance
*/
function getUnderlyerBalance(
address account,
address stableSwap,
address rewardContract,
address lpToken,
uint256 coin
) public view returns (uint256 balance) {
require(stableSwap != address(0), "INVALID_STABLESWAP");
require(rewardContract != address(0), "INVALID_GAUGE");
require(lpToken != address(0), "INVALID_LP_TOKEN");
uint256 poolBalance = getPoolBalance(stableSwap, coin);
(uint256 lpTokenBalance, uint256 lpTokenSupply) =
getLpTokenShare(account, rewardContract, lpToken);
balance = lpTokenBalance.mul(poolBalance).div(lpTokenSupply);
}
function getPoolBalance(address stableSwap, uint256 coin)
public
view
returns (uint256)
{
require(stableSwap != address(0), "INVALID_STABLESWAP");
return ICurvePool(stableSwap).balances(int128(coin));
}
function getLpTokenShare(
address account,
address rewardContract,
address lpToken
) public view returns (uint256 balance, uint256 totalSupply) {
require(rewardContract != address(0), "INVALID_GAUGE");
require(lpToken != address(0), "INVALID_LP_TOKEN");
totalSupply = IERC20(lpToken).totalSupply();
// Need to be careful to not include the balance of `account`,
// since that is included in the Curve allocation.
balance = IRewardPool(rewardContract).balanceOf(account);
}
}
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
import {IBaseRewardPool, IRewardPool} from "./IBaseRewardPool.sol";
import {IBooster} from "./IBooster.sol";
// SPDX-License-Identifier: BUSDL-1.1
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
import {SafeMath, SafeERC20} from "contracts/libraries/Imports.sol";
import {IZap} from "contracts/lpaccount/Imports.sol";
import {
IAssetAllocation,
IDetailedERC20,
IERC20
} from "contracts/common/Imports.sol";
import {
Curve3poolUnderlyerConstants
} from "contracts/protocols/curve/3pool/Constants.sol";
abstract contract CurveZapBase is Curve3poolUnderlyerConstants, IZap {
using SafeMath for uint256;
using SafeERC20 for IERC20;
address internal constant CRV_ADDRESS =
0xD533a949740bb3306d119CC777fa900bA034cd52;
address internal immutable SWAP_ADDRESS;
uint256 internal immutable DENOMINATOR;
uint256 internal immutable SLIPPAGE;
uint256 internal immutable N_COINS;
constructor(
address swapAddress,
uint256 denominator,
uint256 slippage,
uint256 nCoins
) public {
SWAP_ADDRESS = swapAddress;
DENOMINATOR = denominator;
SLIPPAGE = slippage;
N_COINS = nCoins;
}
/// @param amounts array of underlyer amounts
function deployLiquidity(uint256[] calldata amounts) external override {
require(amounts.length == N_COINS, "INVALID_AMOUNTS");
uint256 totalNormalizedDeposit = 0;
for (uint256 i = 0; i < amounts.length; i++) {
if (amounts[i] == 0) continue;
uint256 deposit = amounts[i];
address underlyerAddress = _getCoinAtIndex(i);
uint8 decimals = IDetailedERC20(underlyerAddress).decimals();
uint256 normalizedDeposit =
deposit.mul(10**uint256(18)).div(10**uint256(decimals));
totalNormalizedDeposit = totalNormalizedDeposit.add(
normalizedDeposit
);
IERC20(underlyerAddress).safeApprove(SWAP_ADDRESS, 0);
IERC20(underlyerAddress).safeApprove(SWAP_ADDRESS, amounts[i]);
}
uint256 minAmount =
_calcMinAmount(totalNormalizedDeposit, _getVirtualPrice());
_addLiquidity(amounts, minAmount);
_depositToGauge();
}
/**
* @param amount LP token amount
* @param index underlyer index
*/
function unwindLiquidity(uint256 amount, uint8 index) external override {
require(index < N_COINS, "INVALID_INDEX");
uint256 lpBalance = _withdrawFromGauge(amount);
address underlyerAddress = _getCoinAtIndex(index);
uint8 decimals = IDetailedERC20(underlyerAddress).decimals();
uint256 minAmount =
_calcMinAmountUnderlyer(lpBalance, _getVirtualPrice(), decimals);
_removeLiquidity(lpBalance, index, minAmount);
}
function claim() external override {
_claim();
}
function sortedSymbols() public view override returns (string[] memory) {
// N_COINS is not available as a public function
// so we have to hardcode the number here
string[] memory symbols = new string[](N_COINS);
for (uint256 i = 0; i < symbols.length; i++) {
address underlyerAddress = _getCoinAtIndex(i);
symbols[i] = IDetailedERC20(underlyerAddress).symbol();
}
return symbols;
}
function _getVirtualPrice() internal view virtual returns (uint256);
function _getCoinAtIndex(uint256 i) internal view virtual returns (address);
function _addLiquidity(uint256[] calldata amounts_, uint256 minAmount)
internal
virtual;
function _removeLiquidity(
uint256 lpBalance,
uint8 index,
uint256 minAmount
) internal virtual;
function _depositToGauge() internal virtual;
function _withdrawFromGauge(uint256 amount)
internal
virtual
returns (uint256);
function _claim() internal virtual;
/**
* @dev normalizedDepositAmount the amount in same units as virtual price (18 decimals)
* @dev virtualPrice the "price", in 18 decimals, per big token unit of the LP token
* @return required minimum amount of LP token (in token wei)
*/
function _calcMinAmount(
uint256 normalizedDepositAmount,
uint256 virtualPrice
) internal view returns (uint256) {
uint256 idealLpTokenAmount =
normalizedDepositAmount.mul(1e18).div(virtualPrice);
// allow some slippage/MEV
return
idealLpTokenAmount.mul(DENOMINATOR.sub(SLIPPAGE)).div(DENOMINATOR);
}
/**
* @param lpTokenAmount the amount in the same units as Curve LP token (18 decimals)
* @param virtualPrice the "price", in 18 decimals, per big token unit of the LP token
* @param decimals the number of decimals for underlyer token
* @return required minimum amount of underlyer (in token wei)
*/
function _calcMinAmountUnderlyer(
uint256 lpTokenAmount,
uint256 virtualPrice,
uint8 decimals
) internal view returns (uint256) {
// TODO: grab LP Token decimals explicitly?
uint256 normalizedUnderlyerAmount =
lpTokenAmount.mul(virtualPrice).div(1e18);
uint256 underlyerAmount =
normalizedUnderlyerAmount.mul(10**uint256(decimals)).div(
10**uint256(18)
);
// allow some slippage/MEV
return underlyerAmount.mul(DENOMINATOR.sub(SLIPPAGE)).div(DENOMINATOR);
}
function _createErc20AllocationArray(uint256 extraAllocations)
internal
pure
returns (IERC20[] memory)
{
IERC20[] memory allocations = new IERC20[](extraAllocations.add(4));
allocations[0] = IERC20(CRV_ADDRESS);
allocations[1] = IERC20(DAI_ADDRESS);
allocations[2] = IERC20(USDC_ADDRESS);
allocations[3] = IERC20(USDT_ADDRESS);
return allocations;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.6.11;
interface IRewardPool {
/// @notice withdraw to a convex tokenized deposit
function withdraw(uint256 _amount, bool _claim) external returns (bool);
/// @notice claim rewards
function getReward() external returns (bool);
/// @notice stake a convex tokenized deposit
function stake(uint256 _amount) external returns (bool);
/// @notice Return how much rewards an address will receive if they claim their rewards now.
function earned(address account) external view returns (uint256);
/// @notice get balance of an address
function balanceOf(address _account) external view returns (uint256);
/// @notice get reward period end time
/// @dev since this is based on the unipool contract, `notifyRewardAmount`
/// must be called in order for a new period to begin.
function periodFinish() external view returns (uint256);
}
interface IBaseRewardPool is IRewardPool {
/// @notice withdraw directly to curve LP token
function withdrawAndUnwrap(uint256 _amount, bool _claim)
external
returns (bool);
/// @notice Return the number of extra rewards.
function extraRewardsLength() external view returns (uint256);
/** @notice array of child reward contracts
* You can query the number of extra rewards via baseRewardPool.extraRewardsLength().
* This array holds a list of VirtualBalanceRewardPool contracts which are similar in
* nature to the base reward contract but without actual control of staked tokens.
*
* This means that if a pool has CRV rewards as well as SNX rewards, the pool's main
* reward contract (BaseRewardPool) will distribute the CRV and the child contract
* (VirtualBalanceRewardPool) will distribute the SNX.
*/
function extraRewards(uint256 index) external view returns (address);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.6.11;
pragma experimental ABIEncoderV2;
interface IBooster {
struct PoolInfo {
address lptoken;
address token;
address gauge;
address crvRewards;
address stash;
bool shutdown;
}
/**
* @notice deposit into convex, receive a tokenized deposit.
* Parameter to stake immediately.
*/
function deposit(
uint256 _pid,
uint256 _amount,
bool _stake
) external returns (bool);
/// @notice burn a tokenized deposit to receive curve lp tokens back
function withdraw(uint256 _pid, uint256 _amount) external returns (bool);
function poolInfo(uint256 index) external view returns (PoolInfo memory);
}
|
Convex's staking token is issued 1:1 for deposited LP tokens
|
function getLpTokenBalance(address account)
external
view
override
returns (uint256 lpBalance)
{
IBaseRewardPool rewardContract = _getRewardContract();
lpBalance = rewardContract.balanceOf(account);
}
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// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;
import "@openzeppelin/contracts-upgradeable/utils/structs/EnumerableSetUpgradeable.sol";
import '@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol';
import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC20SnapshotUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
interface IJoeTraderRouter02 {
function addLiquidityAVAX(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountAVAXMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountAVAX, uint liquidity);
function swapExactTokensForAVAXSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function WAVAX() external pure returns (address);
}
contract JPEGvaultDAOTokenV3AVAX is ERC20SnapshotUpgradeable, OwnableUpgradeable {
//
// Don't touch this if you want to upgrade - BEGIN
//
using EnumerableSetUpgradeable for EnumerableSetUpgradeable.AddressSet;
EnumerableSetUpgradeable.AddressSet private excludedRedistribution; // exclure de la redistribution
mapping(address => bool) private excludedTax;
IJoeTraderRouter02 private dexRouter;
address private uniswapV2Pair;
address private WAVAXAddr;
address private growthAddress; // Should no longer be used since v3
address private vaultAddress; // Should no longer be used since v3
address private liquidityAddress; // Should no longer be used since v3
address private redistributionContract;
uint8 private growthFees; // Should no longer be used since v3
uint8 private vaultFees; // Should no longer be used since v3
uint8 private liquidityFees; // Should no longer be used since v3
uint8 private autoLiquidityFees;
// Autoselling ratio between 0 and 100
uint8 private autoSellingRatio;
uint216 private minAmountForSwap;
// Stores tokens waiting for the next swap
uint private autoSellGrowthStack;
uint private autoSellVaultStack;
uint private autoSellLiquidityStack;
//
// Don't touch this if you want to upgrade - END
//
// v3
uint8 public purchaseTax;
uint8 public sellTax;
uint8 public walletTax;
address private treasuryAddress;
uint16 public minimumBlockDelay;
bool private migrated2v3;
address private bridgeAddress;
uint private autoSellStack;
mapping(address => uint256) private lastTransfer;
function initialize(address _growthAddress,
address _router) external initializer {
__Ownable_init();
__ERC20_init("JPEG", "JPEG");
__ERC20Snapshot_init();
dexRouter = IJoeTraderRouter02(_router);
WAVAXAddr = dexRouter.WAVAX();
growthAddress = _growthAddress;
_transferOwnership(growthAddress);
excludedRedistribution.add(address(this));
excludedRedistribution.add(growthAddress);
excludedTax[address(this)] = true;
excludedTax[growthAddress] = true;
purchaseTax = 10;
sellTax = 10;
walletTax = 10;
treasuryAddress = 0x73d6F7de9e9Ba999088B691b72b7291e7738e0eD;
excludedTax[treasuryAddress] = true;
minAmountForSwap = 1_000;
migrated2v3 = true;
_mint(growthAddress, 1_000_000_000 * 10 ** 18);
}
receive() external payable {}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal override {
if (!excludedTax[sender] &&
!excludedTax[recipient]) {
if (recipient == uniswapV2Pair) {
amount = applyTaxes(sender, amount, sellTax);
checkLastTransfer(sender);
}
else if (sender == uniswapV2Pair) {
amount = applyTaxes(sender, amount, purchaseTax);
checkLastTransfer(recipient);
}
else {
amount = applyTaxes(sender, amount, walletTax);
}
}
super._transfer(sender, recipient, amount);
}
function checkLastTransfer(address trader) internal {
if (minimumBlockDelay > 0) {
require ((block.number - lastTransfer[trader]) >= minimumBlockDelay,
"Transfer too close from previous one");
lastTransfer[trader] = block.number;
}
}
function applyTaxes(address sender, uint amount, uint8 tax) internal returns (uint newAmountTransfer) {
uint amountTax = amount * tax;
uint amountAutoLiquidity = amount * autoLiquidityFees;
// Cheaper without "no division by 0" check
unchecked {
amountTax /= 100;
amountAutoLiquidity /= 100;
}
newAmountTransfer = amount
- amountTax
- amountAutoLiquidity;
// Apply autoselling ratio
uint autoSell = amountTax * autoSellingRatio;
// Cheaper without "no division by 0" check
unchecked {
autoSell /= 100;
}
// Transfer the remaining tokens to wallets
super._transfer(sender, treasuryAddress, amountTax - autoSell);
// Transfer all autoselling + autoLP to the contract
super._transfer(sender, address(this), autoSell
+ amountAutoLiquidity);
uint tokenBalance = balanceOf(address(this));
// Only swap if it's worth it
if (tokenBalance >= (minAmountForSwap * 1 ether)
&& uniswapV2Pair != address(0)
&& uniswapV2Pair != msg.sender) {
swapAndLiquify(tokenBalance,
autoSell);
} else {
// Stack tokens to be swapped for autoselling
autoSellStack = autoSellStack + autoSell;
}
}
function swapAndLiquify(uint tokenBalance,
uint autoSell) internal {
uint finalAutoSell = autoSellStack + autoSell;
uint amountToLiquifiy = tokenBalance - finalAutoSell;
// Stack tokens for autoliquidity pool
uint tokensToBeSwappedForLP;
unchecked {
tokensToBeSwappedForLP = amountToLiquifiy / 2;
}
uint tokensForLP = amountToLiquifiy - tokensToBeSwappedForLP;
uint totalToSwap = finalAutoSell + tokensToBeSwappedForLP;
// Swap all in one call
uint balanceInAVAX = address(this).balance;
swapTokensForAVAX(totalToSwap);
uint totalAVAXswaped = address(this).balance - balanceInAVAX;
// Redistribute according to weigth
uint autosellAVAX = totalAVAXswaped * finalAutoSell / totalToSwap;
AddressUpgradeable.sendValue(payable(treasuryAddress), autosellAVAX);
uint availableAVAXForLP = totalAVAXswaped - autosellAVAX;
addLiquidity(tokensForLP, availableAVAXForLP);
autoSellStack = 0;
}
function addLiquidity(uint tokenAmount, uint avaxAmount) internal {
if (tokenAmount >0) {
// add liquidity with token and AVAX
_approve(address(this), address(dexRouter), tokenAmount);
dexRouter.addLiquidityAVAX{value: avaxAmount}(
address(this),
tokenAmount,
0,
0,
owner(),
block.timestamp
);
}
}
function swapTokensForAVAX(uint256 amount) private {
address[] memory _path = new address[](2);
_path[0] = address(this);
_path[1] = address(WAVAXAddr);
_approve(address(this), address(dexRouter), amount);
dexRouter.swapExactTokensForAVAXSupportingFeeOnTransferTokens(
amount,
0,
_path,
address(this),
block.timestamp
);
}
function createRedistribution() public returns (uint, uint) {
require(msg.sender == redistributionContract, "Bad caller");
uint newSnapshotId = _snapshot();
return (newSnapshotId, calcSupplyHolders());
}
function calcSupplyHolders() internal view returns (uint) {
uint balanceExcluded = 0;
for (uint i = 0; i < excludedRedistribution.length(); i++)
balanceExcluded += balanceOf(excludedRedistribution.at(i));
return totalSupply() - balanceExcluded;
}
function setMinimumBlockDelay(uint16 blockCount) external onlyOwner {
minimumBlockDelay = blockCount;
}
function setPurchaseTax(uint8 _tax) external onlyOwner {
purchaseTax = _tax;
}
function setSellTax(uint8 _tax) external onlyOwner {
sellTax = _tax;
}
function setWalletTax(uint8 _tax) external onlyOwner {
walletTax = _tax;
}
function setTreasuryAddress(address _address) external onlyOwner {
treasuryAddress = _address;
excludedTax[_address] = true;
}
function setBridgeAddress(address _address) external onlyOwner {
bridgeAddress = _address;
excludedTax[_address] = true;
}
function excludeTaxAddress(address _address) external onlyOwner {
excludedTax[_address] = true;
}
function removeTaxAddress(address _address) external onlyOwner {
require(_address != address(this), "Not authorized to remove the contract from tax");
excludedTax[_address] = false;
}
// Bridging feature
function mint(address to, uint256 amount) external {
require(msg.sender == bridgeAddress, "Only bridge can mint");
_mint(to, amount);
}
function burn(address to, uint256 amount) external {
require(msg.sender == bridgeAddress, "Only bridge can mint");
_burn(to, amount);
}
// Liquidity settings
function setAutoLiquidityFees(uint8 _fees) external onlyOwner {
autoLiquidityFees = _fees;
}
function setMinAmountForSwap(uint216 _amount) external onlyOwner {
minAmountForSwap = _amount;
}
function setUniswapV2Pair(address _pair) external onlyOwner {
uniswapV2Pair = _pair;
excludedRedistribution.add(_pair);
}
function setAutoSellingRatio(uint8 ratio) external onlyOwner{
require(autoSellingRatio <= 100, "autoSellingRatio should be lower than 100");
autoSellingRatio = ratio;
}
// Redistribution management
function setRedistributionContract(address _address) external onlyOwner {
redistributionContract = _address;
excludedRedistribution.add(_address);
excludedTax[_address] =true;
}
function removeRedistributionAddress(address _address) external onlyOwner {
excludedRedistribution.remove(_address);
}
function excludedRedistributionAddress(address _address) external onlyOwner {
excludedRedistribution.add(_address);
}
}
|
Should no longer be used since v3
|
uint8 private liquidityFees;
| 5,382,517 |
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//pragma solidity ^0.4.0; // the Solidity compiler that comes with Eris 0.12 does not support this
//
// Known issues:
// * enqueue order is not guaranteed, but depends on order of inclusion in blocks
//
// In general, "view" instead of "constant" can be used in newer Solidity compilers, but the one that comes with Eris 0.12 does not support this
//
contract EventQueue {
uint constant CAPACITY = 1000;
struct QueueItemStruct {
address sender;
string data;
uint blockNumber;
}
struct QueueStruct {
QueueItemStruct[1000 + 1] items; // was [CAPACITY + 1], but the Solidity compiler that comes with Eris does not support this
uint firstIndex;
uint lastIndex;
}
mapping(string => QueueStruct) private queue;
function isFull(string topic) public constant returns (bool isFull) {
return ((queue[topic].lastIndex + 1) % queue[topic].items.length == queue[topic].firstIndex);
}
function getCount(string topic) public constant returns (uint count) {
if (queue[topic].lastIndex >= queue[topic].firstIndex) {
return queue[topic].lastIndex - queue[topic].firstIndex;
} else {
// data is wrapped around
return queue[topic].items.length - queue[topic].firstIndex + queue[topic].lastIndex;
}
}
function getCapacity(string topic) public constant returns (uint capacity) {
return queue[topic].items.length - 1;
}
function enqueue(string topic, string data) public {
if (isFull(topic))
return;
uint index = queue[topic].lastIndex;
queue[topic].items[index].sender = msg.sender;
queue[topic].items[index].data = data;
queue[topic].items[index].blockNumber = block.number;
queue[topic].lastIndex = (queue[topic].lastIndex + 1) % queue[topic].items.length;
}
function peek(string topic, uint offset) public constant returns (address sender, string data, uint blockNumber) {
if (queue[topic].firstIndex + offset == queue[topic].lastIndex)
return;
uint index = (queue[topic].firstIndex + offset) % queue[topic].items.length;
sender = queue[topic].items[index].sender;
data = queue[topic].items[index].data;
blockNumber = queue[topic].items[index].blockNumber;
}
function removeFirstItem(string topic) public {
if (queue[topic].firstIndex == queue[topic].lastIndex)
return;
delete queue[topic].items[queue[topic].firstIndex];
queue[topic].firstIndex = (queue[topic].firstIndex + 1) % queue[topic].items.length;
}
function removeFirstItems(string topic, uint count) public {
for (uint i = 0; i < count; i++) {
removeFirstItem(topic);
}
}
function removeAllItems(string topic) public {
removeFirstItems(topic, getCount(topic));
}
function getBlockNumber() public constant returns (uint blockNumber) {
return block.number;
}
// internal functions
function _firstIndex(string topic) public constant returns (uint firstIndex) {
return queue[topic].firstIndex;
}
function _lastIndex(string topic) public constant returns (uint lastIndex) {
return queue[topic].lastIndex;
}
}
|
was [CAPACITY + 1], but the Solidity compiler that comes with Eris does not support this
|
QueueItemStruct[1000 + 1] items;
| 5,349,987 |
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./partial_match/3/0x662827F57c3910C05F5460a19d7634907D4f2362/sources/LDBToken.sol
|
* @dev restore tokens from one address to another. to use only in case a user lost his private key. @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to/
|
function restoreTokens(
address _from,
address _to
)
public onlyOwner
returns (bool)
{
require(maxSingleHoldingValid(_to, balanceOf(_from)),
"restoring tokens will violate max tokens amount per holder");
return super._restoreTokens(_from,_to);
}
| 5,207,135 |
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pragma solidity ^0.6.12;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface ICritBPool {
function balanceOf(address _token) external view returns(uint256 balance);
function add_liquidity(address _token, uint256 _amount) external;
function remove_liquidity(address _token, uint256 _amount) external;
}
interface Controller {
function vaults(address) external view returns (address);
function rewards() external view returns (address);
function want(address) external view returns (address);
function balanceOf(address) external view returns (uint);
function withdraw(address, uint) external;
function earn(address, uint) external;
}
/*
A strategy must implement the following calls;
- deposit()
- withdraw(address) must exclude any tokens used in the yield - Controller role - withdraw should return to Controller
- withdraw(uint) - Controller | Vault role - withdraw should always return to vault
- withdrawAll() - Controller | Vault role - withdraw should always return to vault
- balanceOf()
Where possible, strategies must remain as immutable as possible, instead of updating variables, we update the contract by linking it in the controller
*/
interface ICritAMM {
function deposit(address token, uint amount) external;
function withdraw(address token, uint amount) external;
function tokenBalance(address token) external view returns(uint);
}
contract StrategyCritAMM {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint256;
address public governance;
address public controller;
address public strategist;
address public want; // CRIT | WETH
address public amm;
modifier onlyGovernance {
require(msg.sender == governance, "!governance");
_;
}
constructor(address _want, address _controller) public {
want = _want;
governance = msg.sender;
controller = _controller;
strategist = msg.sender;
}
function getName() external pure returns (string memory) {
return "StrategyCritAMM";
}
function deposit() public {
uint balance = IERC20(want).balanceOf(address(this));
if (balance > 0) {
ICritAMM(amm).deposit(want, balance);
}
}
// Controller only function for creating additional rewards from dust
function withdraw(IERC20 _asset) external returns (uint balance) {
require(msg.sender == controller, "!controller");
require(want != address(_asset), "want");
balance = _asset.balanceOf(address(this));
_asset.safeTransfer(controller, balance);
}
// Withdraw partial funds, normally used with a vault withdrawal
function withdraw(uint _amount) external {
require(msg.sender == controller, "!controller");
uint _balance = IERC20(want).balanceOf(address(this));
if (_balance < _amount) {
_amount = _withdrawSome(_amount.sub(_balance));
_amount = _amount.add(_balance);
}
address _vault = Controller(controller).vaults(address(this));
require(_vault != address(0), "!vault"); // additional protection so we don't burn the funds
IERC20(want).safeTransfer(_vault, _amount);
}
// Withdraw all funds, normally used when migrating strategies
function withdrawAll() external returns (uint balance) {
require(msg.sender == controller, "!controller");
_withdrawAll();
balance = IERC20(want).balanceOf(address(this));
address _vault = Controller(controller).vaults(address(this));
require(_vault != address(0), "!vault"); // additional protection so we don't burn the funds
IERC20(want).safeTransfer(_vault, balance);
}
function _withdrawAll() internal {
ICritAMM critAMM = ICritAMM(amm);
critAMM.withdraw(want, critAMM.tokenBalance(want));
}
function _withdrawSome(uint256 _amount) internal returns (uint) {
ICritAMM critAMM = ICritAMM(amm);
critAMM.withdraw(want, _amount);
return _amount;
}
function balanceOf() public view returns (uint) {
return ICritAMM(amm).tokenBalance(want).add(IERC20(want).balanceOf(address(this)));
}
function setGovernance(address _governance) external onlyGovernance {
require(_governance != address(0), "0x0");
governance = _governance;
}
function setController(address _controller) external onlyGovernance {
require(_controller != address(0), "0x0");
controller = _controller;
}
function setStrategist(address _strategist) external onlyGovernance {
require(_strategist != address(0), "0x0");
strategist = _strategist;
}
function setAMM(address _amm) external onlyGovernance {
require(_amm != address(0), "0x0");
if (amm != address(0)) {
IERC20(want).safeApprove(amm, 0);
}
amm = _amm;
IERC20(want).safeApprove(_amm, 0);
IERC20(want).safeApprove(_amm, uint(~0));
}
}
|
Withdraw all funds, normally used when migrating strategies
|
function withdrawAll() external returns (uint balance) {
require(msg.sender == controller, "!controller");
_withdrawAll();
balance = IERC20(want).balanceOf(address(this));
address _vault = Controller(controller).vaults(address(this));
IERC20(want).safeTransfer(_vault, balance);
}
| 442,075 |
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pragma solidity ^0.4.2;
contract owned {
address public owner;
function owned() {
owner = msg.sender;
}
function changeOwner(address newOwner) onlyowner {
owner = newOwner;
}
modifier onlyowner() {
if (msg.sender==owner) _;
}
}
contract tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData); }
contract CSToken is owned {
/* Public variables of the token */
string public standard = 'Token 0.1';
string public name;
string public symbol;
uint8 public decimals;
uint256 public totalSupply;
/* This creates an array with all balances */
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
/* This generates a public event on the blockchain that will notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
/* Initializes contract with initial supply tokens to the creator of the contract */
function CSToken(
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
) {
owner = msg.sender;
balanceOf[msg.sender] = initialSupply; // Give the creator all initial tokens
totalSupply = initialSupply; // Update total supply
name = tokenName; // Set the name for display purposes
symbol = tokenSymbol; // Set the symbol for display purposes
decimals = decimalUnits; // Amount of decimals for display purposes
}
/* Send coins */
function transfer(address _to, uint256 _value) {
if (balanceOf[msg.sender] < _value) throw; // Check if the sender has enough
if (balanceOf[_to] + _value < balanceOf[_to]) throw; // Check for overflows
balanceOf[msg.sender] -= _value; // Subtract from the sender
balanceOf[_to] += _value; // Add the same to the recipient
Transfer(msg.sender, _to, _value); // Notify anyone listening that this transfer took place
}
function mintToken(address target, uint256 mintedAmount) onlyowner {
balanceOf[target] += mintedAmount;
totalSupply += mintedAmount;
Transfer(0, owner, mintedAmount);
Transfer(owner, target, mintedAmount);
}
/* Allow another contract to spend some tokens in your behalf */
function approve(address _spender, uint256 _value)
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/* Approve and then comunicate the approved contract in a single tx */
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/* A contract attempts to get the coins */
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
if (balanceOf[_from] < _value) throw; // Check if the sender has enough
if (balanceOf[_to] + _value < balanceOf[_to]) throw; // Check for overflows
if (_value > allowance[_from][msg.sender]) throw; // Check allowance
balanceOf[_from] -= _value; // Subtract from the sender
balanceOf[_to] += _value; // Add the same to the recipient
allowance[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
}
/* This unnamed function is called whenever someone tries to send ether to it */
function () {
throw; // Prevents accidental sending of ether
}
}
contract Crowdsale is owned{
uint public start = 1498651200;
uint public currentStage = 0;
bool public crowdsaleStarted = false;
uint[] public prices;
uint[] public tresholds;
address public bounties;
uint public totalCollected;
uint public deadline;
uint public presaleDeadline;
uint public tokensRaised;
uint constant presaleDuration = 19 days;
uint constant saleDuration = 29 days;
uint tokenMultiplier = 10;
CSToken public tokenReward;
mapping(address => uint256) public balanceOf;
event GoalReached(address beneficiary, uint totalCollected);
event FundTransfer(address backer, uint amount, bool isContribution);
event NewStage (uint time, uint stage);
modifier saleFinished() { if (now < deadline && currentStage < 2) throw; _; }
modifier beforeDeadline() { if (now >= deadline) throw; _; }
function Crowdsale(
address _bounties
) {
tokenReward = new CSToken(0, 'MyBit Token', 8, 'MyB');
tokenMultiplier = tokenMultiplier**tokenReward.decimals();
tokenReward.mintToken(_bounties, 1100000 * tokenMultiplier);
presaleDeadline = start + presaleDuration;
deadline = start + presaleDuration + saleDuration;
tresholds.push(1250000 * tokenMultiplier);
tresholds.push(3000000 * tokenMultiplier);
tresholds.push(2**256 - 1);
prices.push(7500 szabo / tokenMultiplier);
prices.push(10 finney / tokenMultiplier);
prices.push(2**256 - 1);
bounties = _bounties;
}
function mint(uint amount, uint tokens, address sender) internal {
balanceOf[sender] += amount;
tokensRaised += tokens;
totalCollected += amount;
tokenReward.mintToken(sender, tokens);
tokenReward.mintToken(owner, tokens * 1333333 / 10000000);
tokenReward.mintToken(bounties, tokens * 1666667 / 10000000);
FundTransfer(sender, amount, true);
}
function processPayment(address from, uint amount) internal beforeDeadline
{
FundTransfer(from, amount, false);
uint price = prices[currentStage];
uint256 tokenAmount = amount / price;
if (tokensRaised + tokenAmount > tresholds[currentStage])
{
uint256 currentTokens = tresholds[currentStage] - tokensRaised;
uint256 currentAmount = currentTokens * price;
mint(currentAmount, currentTokens, from);
currentStage++;
NewStage(now, currentStage);
processPayment(from, amount - currentAmount);
return;
}
mint(amount, tokenAmount, from);
uint256 change = amount - tokenAmount * price;
if(change > 0)
{
totalCollected -= change;
balanceOf[from] -= change;
if (!from.send(change)){
throw;
}
}
}
function () payable beforeDeadline {
if(now < start) throw;
if(currentStage > 1) throw;
if (crowdsaleStarted){
processPayment(msg.sender, msg.value);
} else {
if (now > presaleDeadline)
{
crowdsaleStarted = true;
} else {
if (msg.value < 1 ether) throw;
}
processPayment(msg.sender, msg.value);
}
}
function safeWithdrawal() saleFinished {
if (bounties == msg.sender) {
if (!bounties.send(totalCollected)) {
throw;
}
}
}
}
|
Approve and then comunicate the approved contract in a single tx */
|
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
| 7,219,495 |
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] |
pragma solidity 0.6.6;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public override view returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public override view returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(msg.sender, recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender)
public
override
view
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(msg.sender, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
msg.sender,
_allowances[sender][msg.sender].sub(
amount,
'ERC20: transfer amount exceeds allowance'
)
);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
_approve(
msg.sender,
spender,
_allowances[msg.sender][spender].add(addedValue)
);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
msg.sender,
spender,
_allowances[msg.sender][spender].sub(
subtractedValue,
'ERC20: decreased allowance below zero'
)
);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), 'ERC20: transfer from the zero address');
require(recipient != address(0), 'ERC20: transfer to the zero address');
_balances[sender] = _balances[sender].sub(
amount,
'ERC20: transfer amount exceeds balance'
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: mint to the zero address');
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), 'ERC20: burn from the zero address');
_balances[account] = _balances[account].sub(
amount,
'ERC20: burn amount exceeds balance'
);
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), 'ERC20: approve from the zero address');
require(spender != address(0), 'ERC20: approve to the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
/**
* @dev Extension of {ERC20} that allows token holders to destroy both their own
* tokens and those that they have an allowance for, in a way that can be
* recognized off-chain (via event analysis).
*/
abstract contract ERC20Burnable is ERC20 {
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public virtual {
_burn(msg.sender, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/
function burnFrom(address account, uint256 amount) public virtual {
uint256 decreasedAllowance = allowance(account, msg.sender).sub(
amount,
'ERC20: burn amount exceeds allowance'
);
_approve(account, msg.sender, decreasedAllowance);
_burn(account, amount);
}
}
/*
* @dev Implementation of a token compliant with the ERC20 Token protocol;
* The token has additional burn functionality.
*/
contract Token is ERC20Burnable {
using SafeMath for uint256;
/*
* @dev Initialization of the token,
* following arguments are provided via the constructor: name, symbol, recipient, totalSupply.
* The total supply of tokens is minted to the specified recipient.
*/
constructor(
string memory name,
string memory symbol,
address recipient,
uint256 totalSupply
) public ERC20(name, symbol) {
_mint(recipient, totalSupply);
}
}
/*
* @dev Implementation of the Initial Stake Offering (ISO).
* The ISO is a decentralized token offering with trustless liquidity provisioning,
* dividend accumulation and bonus rewards from staking.
*/
contract UnistakeTokenSale {
using SafeMath for uint256;
struct Contributor {
uint256 phase;
uint256 remainder;
uint256 fromTotalDivs;
}
address payable public immutable wallet;
uint256 public immutable totalSupplyR1;
uint256 public immutable totalSupplyR2;
uint256 public immutable totalSupplyR3;
uint256 public immutable totalSupplyUniswap;
uint256 public immutable rateR1;
uint256 public immutable rateR2;
uint256 public immutable rateR3;
uint256 public immutable periodDurationR3;
uint256 public immutable timeDelayR1;
uint256 public immutable timeDelayR2;
uint256 public immutable stakingPeriodR1;
uint256 public immutable stakingPeriodR2;
uint256 public immutable stakingPeriodR3;
Token public immutable token;
IUniswapV2Router02 public immutable uniswapRouter;
uint256 public immutable decreasingPctToken;
uint256 public immutable decreasingPctETH;
uint256 public immutable decreasingPctRate;
uint256 public immutable decreasingPctBonus;
uint256 public immutable listingRate;
address public immutable platformStakingContract;
mapping(address => bool) private _contributor;
mapping(address => Contributor) private _contributors;
mapping(address => uint256)[3] private _contributions;
bool[3] private _hasEnded;
uint256[3] private _actualSupply;
uint256 private _startTimeR2 = 2**256 - 1;
uint256 private _startTimeR3 = 2**256 - 1;
uint256 private _endTimeR3 = 2**256 - 1;
mapping(address => bool)[3] private _hasWithdrawn;
bool private _bonusOfferingActive;
uint256 private _bonusOfferingActivated;
uint256 private _bonusTotal;
uint256 private _contributionsTotal;
uint256 private _contributorsTotal;
uint256 private _contributedFundsTotal;
uint256 private _bonusReductionFactor;
uint256 private _fundsWithdrawn;
uint256 private _endedDayR3;
uint256 private _latestStakingPlatformPayment;
uint256 private _totalDividends;
uint256 private _scaledRemainder;
uint256 private _scaling = uint256(10) ** 12;
uint256 private _phase = 1;
uint256 private _totalRestakedDividends;
mapping(address => uint256) private _restkedDividends;
mapping(uint256 => uint256) private _payouts;
event Staked(
address indexed account,
uint256 amount);
event Claimed(
address indexed account,
uint256 amount);
event Reclaimed(
address indexed account,
uint256 amount);
event Withdrawn(
address indexed account,
uint256 amount);
event Penalized(
address indexed account,
uint256 amount);
event Ended(
address indexed account,
uint256 amount,
uint256 time);
event Splitted(
address indexed account,
uint256 amount1,
uint256 amount2);
event Bought(
uint8 indexed round,
address indexed account,
uint256 amount);
event Activated(
bool status,
uint256 time);
/*
* @dev Initialization of the ISO,
* following arguments are provided via the constructor:
* ----------------------------------------------------
* tokenArg - token offered in the ISO.
* totalSupplyArg - total amount of tokens allocated for each round.
* totalSupplyUniswapArg - amount of tokens that will be sent to uniswap.
* ratesArg - contribution ratio ETH:Token for each round.
* periodDurationR3 - duration of a day during round 3.
* timeDelayR1Arg - time delay between round 1 and round 2.
* timeDelayR2Arg - time delay between round 2 and round 3.
* stakingPeriodArg - staking duration required to get bonus tokens for each round.
* uniswapRouterArg - contract address of the uniswap router object.
* decreasingPctArg - decreasing percentages associated with: token, ETH, rate, and bonus.
* listingRateArg - initial listing rate of the offered token.
* platformStakingContractArg - contract address of the timed distribution contract.
* walletArg - account address of the team wallet.
*
*/
constructor(
address tokenArg,
uint256[3] memory totalSupplyArg,
uint256 totalSupplyUniswapArg,
uint256[3] memory ratesArg,
uint256 periodDurationR3Arg,
uint256 timeDelayR1Arg,
uint256 timeDelayR2Arg,
uint256[3] memory stakingPeriodArg,
address uniswapRouterArg,
uint256[4] memory decreasingPctArg,
uint256 listingRateArg,
address platformStakingContractArg,
address payable walletArg
) public {
for (uint256 j = 0; j < 3; j++) {
require(totalSupplyArg[j] > 0,
"The 'totalSupplyArg' argument must be larger than zero");
require(ratesArg[j] > 0,
"The 'ratesArg' argument must be larger than zero");
require(stakingPeriodArg[j] > 0,
"The 'stakingPeriodArg' argument must be larger than zero");
}
for (uint256 j = 0; j < 4; j++) {
require(decreasingPctArg[j] < 10000,
"The 'decreasingPctArg' arguments must be less than 100 percent");
}
require(totalSupplyUniswapArg > 0,
"The 'totalSupplyUniswapArg' argument must be larger than zero");
require(periodDurationR3Arg > 0,
"The 'slotDurationR3Arg' argument must be larger than zero");
require(tokenArg != address(0),
"The 'tokenArg' argument cannot be the zero address");
require(uniswapRouterArg != address(0),
"The 'uniswapRouterArg' argument cannot be the zero addresss");
require(listingRateArg > 0,
"The 'listingRateArg' argument must be larger than zero");
require(platformStakingContractArg != address(0),
"The 'vestingContractArg' argument cannot be the zero address");
require(walletArg != address(0),
"The 'walletArg' argument cannot be the zero address");
token = Token(tokenArg);
totalSupplyR1 = totalSupplyArg[0];
totalSupplyR2 = totalSupplyArg[1];
totalSupplyR3 = totalSupplyArg[2];
totalSupplyUniswap = totalSupplyUniswapArg;
periodDurationR3 = periodDurationR3Arg;
timeDelayR1 = timeDelayR1Arg;
timeDelayR2 = timeDelayR2Arg;
rateR1 = ratesArg[0];
rateR2 = ratesArg[1];
rateR3 = ratesArg[2];
stakingPeriodR1 = stakingPeriodArg[0];
stakingPeriodR2 = stakingPeriodArg[1];
stakingPeriodR3 = stakingPeriodArg[2];
uniswapRouter = IUniswapV2Router02(uniswapRouterArg);
decreasingPctToken = decreasingPctArg[0];
decreasingPctETH = decreasingPctArg[1];
decreasingPctRate = decreasingPctArg[2];
decreasingPctBonus = decreasingPctArg[3];
listingRate = listingRateArg;
platformStakingContract = platformStakingContractArg;
wallet = walletArg;
}
/**
* @dev The fallback function is used for all contributions
* during the ISO. The function monitors the current
* round and manages token contributions accordingly.
*/
receive() external payable {
if (token.balanceOf(address(this)) > 0) {
uint8 currentRound = _calculateCurrentRound();
if (currentRound == 0) {
_buyTokenR1();
} else if (currentRound == 1) {
_buyTokenR2();
} else if (currentRound == 2) {
_buyTokenR3();
} else {
revert("The stake offering rounds are not active");
}
} else {
revert("The stake offering must be active");
}
}
/**
* @dev Wrapper around the round 3 closing function.
*/
function closeR3() external {
uint256 period = _calculatePeriod(block.timestamp);
_closeR3(period);
}
/**
* @dev This function prepares the staking and bonus reward settings
* and it also provides liquidity to a freshly created uniswap pair.
*/
function activateStakesAndUniswapLiquidity() external {
require(_hasEnded[0] && _hasEnded[1] && _hasEnded[2],
"all rounds must have ended");
require(!_bonusOfferingActive,
"the bonus offering and uniswap paring can only be done once per ISO");
uint256[3] memory bonusSupplies = [
(_actualSupply[0].mul(_bonusReductionFactor)).div(10000),
(_actualSupply[1].mul(_bonusReductionFactor)).div(10000),
(_actualSupply[2].mul(_bonusReductionFactor)).div(10000)
];
uint256 totalSupply = totalSupplyR1.add(totalSupplyR2).add(totalSupplyR3);
uint256 soldSupply = _actualSupply[0].add(_actualSupply[1]).add(_actualSupply[2]);
uint256 unsoldSupply = totalSupply.sub(soldSupply);
uint256 exceededBonus = totalSupply
.sub(bonusSupplies[0])
.sub(bonusSupplies[1])
.sub(bonusSupplies[2]);
uint256 exceededUniswapAmount = _createUniswapPair(_endedDayR3);
_bonusOfferingActive = true;
_bonusOfferingActivated = block.timestamp;
_bonusTotal = bonusSupplies[0].add(bonusSupplies[1]).add(bonusSupplies[2]);
_contributionsTotal = soldSupply;
_distribute(unsoldSupply.add(exceededBonus).add(exceededUniswapAmount));
emit Activated(true, block.timestamp);
}
/**
* @dev This function allows the caller to stake claimable dividends.
*/
function restakeDividends() external {
uint256 pending = _pendingDividends(msg.sender);
pending = pending.add(_contributors[msg.sender].remainder);
require(pending >= 0, "You do not have dividends to restake");
_restkedDividends[msg.sender] = _restkedDividends[msg.sender].add(pending);
_totalRestakedDividends = _totalRestakedDividends.add(pending);
_bonusTotal = _bonusTotal.sub(pending);
_contributors[msg.sender].phase = _phase;
_contributors[msg.sender].remainder = 0;
_contributors[msg.sender].fromTotalDivs = _totalDividends;
emit Staked(msg.sender, pending);
}
/**
* @dev This function is called by contributors to
* withdraw round 1 tokens.
* -----------------------------------------------------
* Withdrawing tokens might result in bonus tokens, dividends,
* or similar (based on the staking duration of the contributor).
*
*/
function withdrawR1Tokens() external {
require(_bonusOfferingActive,
"The bonus offering is not active yet");
_withdrawTokens(0);
}
/**
* @dev This function is called by contributors to
* withdraw round 2 tokens.
* -----------------------------------------------------
* Withdrawing tokens might result in bonus tokens, dividends,
* or similar (based on the staking duration of the contributor).
*
*/
function withdrawR2Tokens() external {
require(_bonusOfferingActive,
"The bonus offering is not active yet");
_withdrawTokens(1);
}
/**
* @dev This function is called by contributors to
* withdraw round 3 tokens.
* -----------------------------------------------------
* Withdrawing tokens might result in bonus tokens, dividends,
* or similar (based on the staking duration of the contributor).
*
*/
function withdrawR3Tokens() external {
require(_bonusOfferingActive,
"The bonus offering is not active yet");
_withdrawTokens(2);
}
/**
* @dev wrapper around the withdrawal of funds function.
*/
function withdrawFunds() external {
uint256 amount = ((address(this).balance).sub(_fundsWithdrawn)).div(2);
_withdrawFunds(amount);
}
/**
* @dev Returns the total amount of restaked dividends in the ISO.
*/
function getRestakedDividendsTotal() external view returns (uint256) {
return _totalRestakedDividends;
}
/**
* @dev Returns the total staking bonuses in the ISO.
*/
function getStakingBonusesTotal() external view returns (uint256) {
return _bonusTotal;
}
/**
* @dev Returns the latest amount of tokens sent to the timed distribution contract.
*/
function getLatestStakingPlatformPayment() external view returns (uint256) {
return _latestStakingPlatformPayment;
}
/**
* @dev Returns the current day of round 3.
*/
function getCurrentDayR3() external view returns (uint256) {
if (_endedDayR3 != 0) {
return _endedDayR3;
}
return _calculatePeriod(block.timestamp);
}
/**
* @dev Returns the ending day of round 3.
*/
function getEndedDayR3() external view returns (uint256) {
return _endedDayR3;
}
/**
* @dev Returns the start time of round 2.
*/
function getR2Start() external view returns (uint256) {
return _startTimeR2;
}
/**
* @dev Returns the start time of round 3.
*/
function getR3Start() external view returns (uint256) {
return _startTimeR3;
}
/**
* @dev Returns the end time of round 3.
*/
function getR3End() external view returns (uint256) {
return _endTimeR3;
}
/**
* @dev Returns the total amount of contributors in the ISO.
*/
function getContributorsTotal() external view returns (uint256) {
return _contributorsTotal;
}
/**
* @dev Returns the total amount of contributed funds (ETH) in the ISO
*/
function getContributedFundsTotal() external view returns (uint256) {
return _contributedFundsTotal;
}
/**
* @dev Returns the current round of the ISO.
*/
function getCurrentRound() external view returns (uint8) {
uint8 round = _calculateCurrentRound();
if (round == 0 && !_hasEnded[0]) {
return 1;
}
if (round == 1 && !_hasEnded[1] && _hasEnded[0]) {
if (block.timestamp <= _startTimeR2) {
return 0;
}
return 2;
}
if (round == 2 && !_hasEnded[2] && _hasEnded[1]) {
if (block.timestamp <= _startTimeR3) {
return 0;
}
return 3;
}
else {
return 0;
}
}
/**
* @dev Returns whether round 1 has ended or not.
*/
function hasR1Ended() external view returns (bool) {
return _hasEnded[0];
}
/**
* @dev Returns whether round 2 has ended or not.
*/
function hasR2Ended() external view returns (bool) {
return _hasEnded[1];
}
/**
* @dev Returns whether round 3 has ended or not.
*/
function hasR3Ended() external view returns (bool) {
return _hasEnded[2];
}
/**
* @dev Returns the remaining time delay between round 1 and round 2.
*/
function getRemainingTimeDelayR1R2() external view returns (uint256) {
if (timeDelayR1 > 0) {
if (_hasEnded[0] && !_hasEnded[1]) {
if (_startTimeR2.sub(block.timestamp) > 0) {
return _startTimeR2.sub(block.timestamp);
} else {
return 0;
}
} else {
return 0;
}
} else {
return 0;
}
}
/**
* @dev Returns the remaining time delay between round 2 and round 3.
*/
function getRemainingTimeDelayR2R3() external view returns (uint256) {
if (timeDelayR2 > 0) {
if (_hasEnded[0] && _hasEnded[1] && !_hasEnded[2]) {
if (_startTimeR3.sub(block.timestamp) > 0) {
return _startTimeR3.sub(block.timestamp);
} else {
return 0;
}
} else {
return 0;
}
} else {
return 0;
}
}
/**
* @dev Returns the total sales for round 1.
*/
function getR1Sales() external view returns (uint256) {
return _actualSupply[0];
}
/**
* @dev Returns the total sales for round 2.
*/
function getR2Sales() external view returns (uint256) {
return _actualSupply[1];
}
/**
* @dev Returns the total sales for round 3.
*/
function getR3Sales() external view returns (uint256) {
return _actualSupply[2];
}
/**
* @dev Returns whether the staking- and bonus functionality has been activated or not.
*/
function getStakingActivationStatus() external view returns (bool) {
return _bonusOfferingActive;
}
/**
* @dev This function allows the caller to withdraw claimable dividends.
*/
function claimDividends() public {
if (_totalDividends > _contributors[msg.sender].fromTotalDivs) {
uint256 pending = _pendingDividends(msg.sender);
pending = pending.add(_contributors[msg.sender].remainder);
require(pending >= 0, "You do not have dividends to claim");
_contributors[msg.sender].phase = _phase;
_contributors[msg.sender].remainder = 0;
_contributors[msg.sender].fromTotalDivs = _totalDividends;
_bonusTotal = _bonusTotal.sub(pending);
require(token.transfer(msg.sender, pending), "Error in sending reward from contract");
emit Claimed(msg.sender, pending);
}
}
/**
* @dev This function allows the caller to withdraw restaked dividends.
*/
function withdrawRestakedDividends() public {
uint256 amount = _restkedDividends[msg.sender];
require(amount >= 0, "You do not have restaked dividends to withdraw");
claimDividends();
_restkedDividends[msg.sender] = 0;
_totalRestakedDividends = _totalRestakedDividends.sub(amount);
token.transfer(msg.sender, amount);
emit Reclaimed(msg.sender, amount);
}
/**
* @dev Returns claimable dividends.
*/
function getDividends(address accountArg) public view returns (uint256) {
uint256 amount = ((_totalDividends.sub(_payouts[_contributors[accountArg].phase - 1])).mul(getContributionTotal(accountArg))).div(_scaling);
amount += ((_totalDividends.sub(_payouts[_contributors[accountArg].phase - 1])).mul(getContributionTotal(accountArg))) % _scaling ;
return (amount.add(_contributors[msg.sender].remainder));
}
/**
* @dev Returns restaked dividends.
*/
function getRestakedDividends(address accountArg) public view returns (uint256) {
return _restkedDividends[accountArg];
}
/**
* @dev Returns round 1 contributions of an account.
*/
function getR1Contribution(address accountArg) public view returns (uint256) {
return _contributions[0][accountArg];
}
/**
* @dev Returns round 2 contributions of an account.
*/
function getR2Contribution(address accountArg) public view returns (uint256) {
return _contributions[1][accountArg];
}
/**
* @dev Returns round 3 contributions of an account.
*/
function getR3Contribution(address accountArg) public view returns (uint256) {
return _contributions[2][accountArg];
}
/**
* @dev Returns the total contributions of an account.
*/
function getContributionTotal(address accountArg) public view returns (uint256) {
uint256 contributionR1 = getR1Contribution(accountArg);
uint256 contributionR2 = getR2Contribution(accountArg);
uint256 contributionR3 = getR3Contribution(accountArg);
uint256 restaked = getRestakedDividends(accountArg);
return contributionR1.add(contributionR2).add(contributionR3).add(restaked);
}
/**
* @dev Returns the total contributions in the ISO (including restaked dividends).
*/
function getContributionsTotal() public view returns (uint256) {
return _contributionsTotal.add(_totalRestakedDividends);
}
/**
* @dev Returns expected round 1 staking bonus for an account.
*/
function getStakingBonusR1(address accountArg) public view returns (uint256) {
uint256 contribution = _contributions[0][accountArg];
return (contribution.mul(_bonusReductionFactor)).div(10000);
}
/**
* @dev Returns expected round 2 staking bonus for an account.
*/
function getStakingBonusR2(address accountArg) public view returns (uint256) {
uint256 contribution = _contributions[1][accountArg];
return (contribution.mul(_bonusReductionFactor)).div(10000);
}
/**
* @dev Returns expected round 3 staking bonus for an account.
*/
function getStakingBonusR3(address accountArg) public view returns (uint256) {
uint256 contribution = _contributions[2][accountArg];
return (contribution.mul(_bonusReductionFactor)).div(10000);
}
/**
* @dev Returns the total expected staking bonuses for an account.
*/
function getStakingBonusTotal(address accountArg) public view returns (uint256) {
uint256 stakeR1 = getStakingBonusR1(accountArg);
uint256 stakeR2 = getStakingBonusR2(accountArg);
uint256 stakeR3 = getStakingBonusR3(accountArg);
return stakeR1.add(stakeR2).add(stakeR3);
}
/**
* @dev This function handles distribution of extra supply.
*/
function _distribute(uint256 amountArg) private {
uint256 vested = amountArg.div(2);
uint256 burned = amountArg.sub(vested);
token.transfer(platformStakingContract, vested);
token.burn(burned);
}
/**
* @dev This function handles calculation of token withdrawals
* (it also withdraws dividends and restaked dividends
* during certain circumstances).
*/
function _withdrawTokens(uint8 indexArg) private {
require(_hasEnded[0] && _hasEnded[1] && _hasEnded[2],
"The rounds must be inactive before any tokens can be withdrawn");
require(!_hasWithdrawn[indexArg][msg.sender],
"The caller must have withdrawable tokens available from this round");
claimDividends();
uint256 amount = _contributions[indexArg][msg.sender];
uint256 amountBonus = (amount.mul(_bonusReductionFactor)).div(10000);
_contributions[indexArg][msg.sender] = _contributions[indexArg][msg.sender].sub(amount);
_contributionsTotal = _contributionsTotal.sub(amount);
uint256 contributions = getContributionTotal(msg.sender);
uint256 restaked = getRestakedDividends(msg.sender);
if (contributions.sub(restaked) == 0) withdrawRestakedDividends();
uint pending = _pendingDividends(msg.sender);
_contributors[msg.sender].remainder = (_contributors[msg.sender].remainder).add(pending);
_contributors[msg.sender].fromTotalDivs = _totalDividends;
_contributors[msg.sender].phase = _phase;
_hasWithdrawn[indexArg][msg.sender] = true;
token.transfer(msg.sender, amount);
_endStake(indexArg, msg.sender, amountBonus);
}
/**
* @dev This function handles fund withdrawals.
*/
function _withdrawFunds(uint256 amountArg) private {
require(msg.sender == wallet,
"The caller must be the specified funds wallet of the team");
require(amountArg <= ((address(this).balance.sub(_fundsWithdrawn)).div(2)),
"The 'amountArg' argument exceeds the limit");
require(!_hasEnded[2],
"The third round is not active");
_fundsWithdrawn = _fundsWithdrawn.add(amountArg);
wallet.transfer(amountArg);
}
/**
* @dev This function handles token purchases for round 1.
*/
function _buyTokenR1() private {
if (token.balanceOf(address(this)) > 0) {
require(!_hasEnded[0],
"The first round must be active");
bool isRoundEnded = _buyToken(0, rateR1, totalSupplyR1);
if (isRoundEnded == true) {
_startTimeR2 = block.timestamp.add(timeDelayR1);
}
} else {
revert("The stake offering must be active");
}
}
/**
* @dev This function handles token purchases for round 2.
*/
function _buyTokenR2() private {
require(_hasEnded[0] && !_hasEnded[1],
"The first round one must not be active while the second round must be active");
require(block.timestamp >= _startTimeR2,
"The time delay between the first round and the second round must be surpassed");
bool isRoundEnded = _buyToken(1, rateR2, totalSupplyR2);
if (isRoundEnded == true) {
_startTimeR3 = block.timestamp.add(timeDelayR2);
}
}
/**
* @dev This function handles token purchases for round 3.
*/
function _buyTokenR3() private {
require(_hasEnded[1] && !_hasEnded[2],
"The second round one must not be active while the third round must be active");
require(block.timestamp >= _startTimeR3,
"The time delay between the first round and the second round must be surpassed");
uint256 period = _calculatePeriod(block.timestamp);
(bool isRoundClosed, uint256 actualPeriodTotalSupply) = _closeR3(period);
if (!isRoundClosed) {
bool isRoundEnded = _buyToken(2, rateR3, actualPeriodTotalSupply);
if (isRoundEnded == true) {
_endTimeR3 = block.timestamp;
uint256 endingPeriod = _calculateEndingPeriod();
uint256 reductionFactor = _calculateBonusReductionFactor(endingPeriod);
_bonusReductionFactor = reductionFactor;
_endedDayR3 = endingPeriod;
}
}
}
/**
* @dev This function handles bonus payouts and the split of forfeited bonuses.
*/
function _endStake(uint256 indexArg, address accountArg, uint256 amountArg) private {
uint256 elapsedTime = (block.timestamp).sub(_bonusOfferingActivated);
uint256 payout;
uint256 duration = _getDuration(indexArg);
if (elapsedTime >= duration) {
payout = amountArg;
} else if (elapsedTime >= duration.mul(3).div(4) && elapsedTime < duration) {
payout = amountArg.mul(3).div(4);
} else if (elapsedTime >= duration.div(2) && elapsedTime < duration.mul(3).div(4)) {
payout = amountArg.div(2);
} else if (elapsedTime >= duration.div(4) && elapsedTime < duration.div(2)) {
payout = amountArg.div(4);
} else {
payout = 0;
}
_split(amountArg.sub(payout));
if (payout != 0) {
token.transfer(accountArg, payout);
}
emit Ended(accountArg, amountArg, block.timestamp);
}
/**
* @dev This function splits forfeited bonuses into dividends
* and to timed distribution contract accordingly.
*/
function _split(uint256 amountArg) private {
if (amountArg == 0) {
return;
}
uint256 dividends = amountArg.div(2);
uint256 platformStakingShare = amountArg.sub(dividends);
_bonusTotal = _bonusTotal.sub(platformStakingShare);
_latestStakingPlatformPayment = platformStakingShare;
token.transfer(platformStakingContract, platformStakingShare);
_addDividends(_latestStakingPlatformPayment);
emit Splitted(msg.sender, dividends, platformStakingShare);
}
/**
* @dev this function handles addition of new dividends.
*/
function _addDividends(uint256 bonusArg) private {
uint256 latest = (bonusArg.mul(_scaling)).add(_scaledRemainder);
uint256 dividendPerToken = latest.div(_contributionsTotal.add(_totalRestakedDividends));
_scaledRemainder = latest.mod(_contributionsTotal.add(_totalRestakedDividends));
_totalDividends = _totalDividends.add(dividendPerToken);
_payouts[_phase] = _payouts[_phase-1].add(dividendPerToken);
_phase++;
}
/**
* @dev returns pending dividend rewards.
*/
function _pendingDividends(address accountArg) private returns (uint256) {
uint256 amount = ((_totalDividends.sub(_payouts[_contributors[accountArg].phase - 1])).mul(getContributionTotal(accountArg))).div(_scaling);
_contributors[accountArg].remainder += ((_totalDividends.sub(_payouts[_contributors[accountArg].phase - 1])).mul(getContributionTotal(accountArg))) % _scaling ;
return amount;
}
/**
* @dev This function creates a uniswap pair and handles liquidity provisioning.
* Returns the uniswap token leftovers.
*/
function _createUniswapPair(uint256 endingPeriodArg) private returns (uint256) {
uint256 listingPrice = endingPeriodArg.mul(decreasingPctRate);
uint256 ethDecrease = uint256(5000).sub(endingPeriodArg.mul(decreasingPctETH));
uint256 ethOnUniswap = (_contributedFundsTotal.mul(ethDecrease)).div(10000);
ethOnUniswap = ethOnUniswap <= (address(this).balance)
? ethOnUniswap
: (address(this).balance);
uint256 tokensOnUniswap = ethOnUniswap
.mul(listingRate)
.mul(10000)
.div(uint256(10000).sub(listingPrice))
.div(100000);
token.approve(address(uniswapRouter), tokensOnUniswap);
uniswapRouter.addLiquidityETH.value(ethOnUniswap)(
address(token),
tokensOnUniswap,
0,
0,
wallet,
block.timestamp
);
wallet.transfer(address(this).balance);
return (totalSupplyUniswap.sub(tokensOnUniswap));
}
/**
* @dev this function will close round 3 if based on day and sold supply.
* Returns whether a particular round has ended or not and
* the max supply of a particular day during round 3.
*/
function _closeR3(uint256 periodArg) private returns (bool isRoundEnded, uint256 maxPeriodSupply) {
require(_hasEnded[0] && _hasEnded[1] && !_hasEnded[2],
'Round 3 has ended or Round 1 or 2 have not ended yet');
require(block.timestamp >= _startTimeR3,
'Pause period between Round 2 and 3');
uint256 decreasingTokenNumber = totalSupplyR3.mul(decreasingPctToken).div(10000);
maxPeriodSupply = totalSupplyR3.sub(periodArg.mul(decreasingTokenNumber));
if (maxPeriodSupply <= _actualSupply[2]) {
msg.sender.transfer(msg.value);
_hasEnded[2] = true;
_endTimeR3 = block.timestamp;
uint256 endingPeriod = _calculateEndingPeriod();
uint256 reductionFactor = _calculateBonusReductionFactor(endingPeriod);
_endedDayR3 = endingPeriod;
_bonusReductionFactor = reductionFactor;
return (true, maxPeriodSupply);
} else {
return (false, maxPeriodSupply);
}
}
/**
* @dev this function handles low level token purchases.
* Returns whether a particular round has ended or not.
*/
function _buyToken(uint8 indexArg, uint256 rateArg, uint256 totalSupplyArg) private returns (bool isRoundEnded) {
uint256 tokensNumber = msg.value.mul(rateArg).div(100000);
uint256 actualTotalBalance = _actualSupply[indexArg];
uint256 newTotalRoundBalance = actualTotalBalance.add(tokensNumber);
if (!_contributor[msg.sender]) {
_contributor[msg.sender] = true;
_contributorsTotal++;
}
if (newTotalRoundBalance < totalSupplyArg) {
_contributions[indexArg][msg.sender] = _contributions[indexArg][msg.sender].add(tokensNumber);
_actualSupply[indexArg] = newTotalRoundBalance;
_contributedFundsTotal = _contributedFundsTotal.add(msg.value);
emit Bought(uint8(indexArg + 1), msg.sender, tokensNumber);
return false;
} else {
uint256 availableTokens = totalSupplyArg.sub(actualTotalBalance);
uint256 availableEth = availableTokens.mul(100000).div(rateArg);
_contributions[indexArg][msg.sender] = _contributions[indexArg][msg.sender].add(availableTokens);
_actualSupply[indexArg] = totalSupplyArg;
_contributedFundsTotal = _contributedFundsTotal.add(availableEth);
_hasEnded[indexArg] = true;
msg.sender.transfer(msg.value.sub(availableEth));
emit Bought(uint8(indexArg + 1), msg.sender, availableTokens);
return true;
}
}
/**
* @dev Returns the staking duration of a particular round.
*/
function _getDuration(uint256 indexArg) private view returns (uint256) {
if (indexArg == 0) {
return stakingPeriodR1;
}
if (indexArg == 1) {
return stakingPeriodR2;
}
if (indexArg == 2) {
return stakingPeriodR3;
}
}
/**
* @dev Returns the bonus reduction factor.
*/
function _calculateBonusReductionFactor(uint256 periodArg) private view returns (uint256) {
uint256 reductionFactor = uint256(10000).sub(periodArg.mul(decreasingPctBonus));
return reductionFactor;
}
/**
* @dev Returns the current round.
*/
function _calculateCurrentRound() private view returns (uint8) {
if (!_hasEnded[0]) {
return 0;
} else if (_hasEnded[0] && !_hasEnded[1] && !_hasEnded[2]) {
return 1;
} else if (_hasEnded[0] && _hasEnded[1] && !_hasEnded[2]) {
return 2;
} else {
return 2**8 - 1;
}
}
/**
* @dev Returns the current day.
*/
function _calculatePeriod(uint256 timeArg) private view returns (uint256) {
uint256 period = ((timeArg.sub(_startTimeR3)).div(periodDurationR3));
uint256 maxPeriods = uint256(10000).div(decreasingPctToken);
if (period > maxPeriods) {
return maxPeriods;
}
return period;
}
/**
* @dev Returns the ending day of round 3.
*/
function _calculateEndingPeriod() private view returns (uint256) {
require(_endTimeR3 != (2**256) - 1,
"The third round must be active");
uint256 endingPeriod = _calculatePeriod(_endTimeR3);
return endingPeriod;
}
}
|
* @dev The fallback function is used for all contributions during the ISO. The function monitors the current round and manages token contributions accordingly./
|
receive() external payable {
if (token.balanceOf(address(this)) > 0) {
uint8 currentRound = _calculateCurrentRound();
if (currentRound == 0) {
_buyTokenR1();
_buyTokenR2();
_buyTokenR3();
revert("The stake offering rounds are not active");
}
revert("The stake offering must be active");
}
}
| 12,816,386 |
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pragma solidity 0.4.24;
import "./ERC677BridgeToken.sol";
contract PermittableToken is ERC677BridgeToken {
string public constant version = "1";
// EIP712 niceties
bytes32 public DOMAIN_SEPARATOR;
// bytes32 public constant PERMIT_TYPEHASH_LEGACY = keccak256("Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)");
bytes32 public constant PERMIT_TYPEHASH_LEGACY = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;
// bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint256) public nonces;
mapping(address => mapping(address => uint256)) public expirations;
constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _chainId)
public
ERC677BridgeToken(_name, _symbol, _decimals)
{
require(_chainId != 0);
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(_name)),
keccak256(bytes(version)),
_chainId,
address(this)
)
);
}
/// @dev transferFrom in this contract works in a slightly different form than the generic
/// transferFrom function. This contract allows for "unlimited approval".
/// Should the user approve an address for the maximum uint256 value,
/// then that address will have unlimited approval until told otherwise.
/// @param _sender The address of the sender.
/// @param _recipient The address of the recipient.
/// @param _amount The value to transfer.
/// @return Success status.
function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) {
require(_sender != address(0));
require(_recipient != address(0));
balances[_sender] = balances[_sender].sub(_amount);
balances[_recipient] = balances[_recipient].add(_amount);
emit Transfer(_sender, _recipient, _amount);
if (_sender != msg.sender) {
uint256 allowedAmount = allowance(_sender, msg.sender);
if (allowedAmount != uint256(-1)) {
// If allowance is limited, adjust it.
// In this case `transferFrom` works like the generic
allowed[_sender][msg.sender] = allowedAmount.sub(_amount);
emit Approval(_sender, msg.sender, allowed[_sender][msg.sender]);
} else {
// If allowance is unlimited by `permit`, `approve`, or `increaseAllowance`
// function, don't adjust it. But the expiration date must be empty or in the future
require(expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= now);
}
} else {
// If `_sender` is `msg.sender`,
// the function works just like `transfer()`
}
callAfterTransfer(_sender, _recipient, _amount);
return true;
}
/// @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
/// @param _to The address which will spend the funds.
/// @param _value The amount of tokens to be spent.
function approve(address _to, uint256 _value) public returns (bool result) {
_approveAndResetExpirations(msg.sender, _to, _value);
return true;
}
/// @dev Atomically increases the allowance granted to spender by the caller.
/// @param _to The address which will spend the funds.
/// @param _addedValue The amount of tokens to increase the allowance by.
function increaseAllowance(address _to, uint256 _addedValue) public returns (bool result) {
_approveAndResetExpirations(msg.sender, _to, allowed[msg.sender][_to].add(_addedValue));
return true;
}
/// @dev An alias for `transfer` function.
/// @param _to The address of the recipient.
/// @param _amount The value to transfer.
function push(address _to, uint256 _amount) public {
transferFrom(msg.sender, _to, _amount);
}
/// @dev Makes a request to transfer the specified amount
/// from the specified address to the caller's address.
/// @param _from The address of the holder.
/// @param _amount The value to transfer.
function pull(address _from, uint256 _amount) public {
transferFrom(_from, msg.sender, _amount);
}
/// @dev An alias for `transferFrom` function.
/// @param _from The address of the sender.
/// @param _to The address of the recipient.
/// @param _amount The value to transfer.
function move(address _from, address _to, uint256 _amount) public {
transferFrom(_from, _to, _amount);
}
/// @dev Allows to spend holder's unlimited amount by the specified spender.
/// The function can be called by anyone, but requires having allowance parameters
/// signed by the holder according to EIP712.
/// @param _holder The holder's address.
/// @param _spender The spender's address.
/// @param _nonce The nonce taken from `nonces(_holder)` public getter.
/// @param _expiry The allowance expiration date (unix timestamp in UTC).
/// Can be zero for no expiration. Forced to zero if `_allowed` is `false`.
/// Note that timestamps are not precise, malicious miner/validator can manipulate them to some extend.
/// Assume that there can be a 900 seconds time delta between the desired timestamp and the actual expiration.
/// @param _allowed True to enable unlimited allowance for the spender by the holder. False to disable.
/// @param _v A final byte of signature (ECDSA component).
/// @param _r The first 32 bytes of signature (ECDSA component).
/// @param _s The second 32 bytes of signature (ECDSA component).
function permit(
address _holder,
address _spender,
uint256 _nonce,
uint256 _expiry,
bool _allowed,
uint8 _v,
bytes32 _r,
bytes32 _s
) external {
require(_expiry == 0 || now <= _expiry);
bytes32 digest = _digest(abi.encode(PERMIT_TYPEHASH_LEGACY, _holder, _spender, _nonce, _expiry, _allowed));
require(_holder == _recover(digest, _v, _r, _s));
require(_nonce == nonces[_holder]++);
uint256 amount = _allowed ? uint256(-1) : 0;
expirations[_holder][_spender] = _allowed ? _expiry : 0;
_approve(_holder, _spender, amount);
}
/** @dev Allows to spend holder's unlimited amount by the specified spender according to EIP2612.
* The function can be called by anyone, but requires having allowance parameters
* signed by the holder according to EIP712.
* @param _holder The holder's address.
* @param _spender The spender's address.
* @param _value Allowance value to set as a result of the call.
* @param _deadline The deadline timestamp to call the permit function. Must be a timestamp in the future.
* Note that timestamps are not precise, malicious miner/validator can manipulate them to some extend.
* Assume that there can be a 900 seconds time delta between the desired timestamp and the actual expiration.
* @param _v A final byte of signature (ECDSA component).
* @param _r The first 32 bytes of signature (ECDSA component).
* @param _s The second 32 bytes of signature (ECDSA component).
*/
function permit(
address _holder,
address _spender,
uint256 _value,
uint256 _deadline,
uint8 _v,
bytes32 _r,
bytes32 _s
) external {
require(now <= _deadline);
uint256 nonce = nonces[_holder]++;
bytes32 digest = _digest(abi.encode(PERMIT_TYPEHASH, _holder, _spender, _value, nonce, _deadline));
require(_holder == _recover(digest, _v, _r, _s));
_approveAndResetExpirations(_holder, _spender, _value);
}
/**
* @dev Sets a new allowance value for the given owner and spender addresses.
* Resets expiration timestamp in case of unlimited approval.
* @param _owner address tokens holder.
* @param _spender address of tokens spender.
* @param _amount amount of approved tokens.
*/
function _approveAndResetExpirations(address _owner, address _spender, uint256 _amount) internal {
_approve(_owner, _spender, _amount);
// it is not necessary to reset _expirations in other cases, since it is only used together with infinite allowance
if (_amount == uint256(-1)) {
delete expirations[_owner][_spender];
}
}
/**
* @dev Internal function for issuing an allowance.
* @param _owner address of the tokens owner.
* @param _spender address of the approved tokens spender.
* @param _amount amount of the approved tokens.
*/
function _approve(address _owner, address _spender, uint256 _amount) internal {
require(_owner != address(0), "ERC20: approve from the zero address");
require(_spender != address(0), "ERC20: approve to the zero address");
allowed[_owner][_spender] = _amount;
emit Approval(_owner, _spender, _amount);
}
/**
* @dev Calculates the message digest for encoded EIP712 typed struct.
* @param _typedStruct encoded payload.
*/
function _digest(bytes memory _typedStruct) internal view returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, keccak256(_typedStruct)));
}
/**
* @dev Derives the signer address for the given message digest and ECDSA signature params.
* @param _digest signed message digest.
* @param _v a final byte of signature (ECDSA component).
* @param _r the first 32 bytes of the signature (ECDSA component).
* @param _s the second 32 bytes of the signature (ECDSA component).
*/
function _recover(bytes32 _digest, uint8 _v, bytes32 _r, bytes32 _s) internal pure returns (address) {
require(_v == 27 || _v == 28, "ECDSA: invalid signature 'v' value");
require(
uint256(_s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0,
"ECDSA: invalid signature 's' value"
);
address signer = ecrecover(_digest, _v, _r, _s);
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
}
|
@dev transferFrom in this contract works in a slightly different form than the generic transferFrom function. This contract allows for "unlimited approval". Should the user approve an address for the maximum uint256 value, then that address will have unlimited approval until told otherwise. @param _sender The address of the sender. @param _recipient The address of the recipient. @param _amount The value to transfer. @return Success status. If allowance is limited, adjust it. In this case `transferFrom` works like the generic If allowance is unlimited by `permit`, `approve`, or `increaseAllowance` function, don't adjust it. But the expiration date must be empty or in the future
|
function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) {
require(_sender != address(0));
require(_recipient != address(0));
balances[_sender] = balances[_sender].sub(_amount);
balances[_recipient] = balances[_recipient].add(_amount);
emit Transfer(_sender, _recipient, _amount);
if (_sender != msg.sender) {
uint256 allowedAmount = allowance(_sender, msg.sender);
if (allowedAmount != uint256(-1)) {
allowed[_sender][msg.sender] = allowedAmount.sub(_amount);
emit Approval(_sender, msg.sender, allowed[_sender][msg.sender]);
require(expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= now);
}
callAfterTransfer(_sender, _recipient, _amount);
return true;
}
| 6,407,797 |
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// SPDX-License-Identifier: MIT
// Same version as openzeppelin 3.4
pragma solidity >=0.6.0 <0.8.0;
library Utils
{
//---------------------------
// Convert
//
function convertBlockHashToAddress(uint256 blockNumber) public view returns (address)
{
// https://docs.soliditylang.org/en/v0.7.6/types.html#address
return address(uint160(bytes20(blockhash(blockNumber))));
}
function getBlockSeed() public view returns (bytes20)
{
address s = convertBlockHashToAddress(block.number);
if( s == address(0) && block.number > 0 )
s = convertBlockHashToAddress(block.number-1);
return bytes20(s);
}
function convertBytesToHexString(bytes memory values) public pure returns (string memory)
{
bytes memory result = new bytes(values.length*2);
for(uint8 i = 0; i < values.length; i++)
{
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(values[i]>>4) : uint8(values[i] & 0x0f) );
result[i*2+j] = v > 9 ? byte(55+v) : byte(48+v);
}
}
return string(result);
}
function convertByteToHexString(byte b) public pure returns (string memory)
{
bytes memory result = new bytes(2);
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(b>>4) : uint8(b & 0x0f) );
result[j] = v > 9 ? byte(55+v) : byte(48+v);
}
return string(result);
}
//---------------------------
// Math
//
function clamp_uint256(uint256 value, uint256 min, uint256 max) public pure returns (uint256)
{
return value < min ? min : value > max ? max : value;
}
function min_uint256(uint256 a, uint256 b) public pure returns (uint256) {
return a < b ? a : b;
}
function max_uint256(uint256 a, uint256 b) public pure returns (uint256) {
return a > b ? a : b;
}
function percent_uint256(uint256 value, uint256 percentage) public pure returns (uint256)
{
return value * percentage / 100;
}
//---------------------------
// Pixels
//
function step_int(int min, int max, int stepCount, int stepIndex) public pure returns (int)
{
if( stepIndex <= 0 || stepCount <= 1 || min == max )
return min;
if( stepIndex >= stepCount - 1 )
return max;
int d = (max - min) / (stepCount - 1);
return min + (d * stepIndex);
}
function step_uint8(uint8 min, uint8 max, uint8 stepCount, uint8 stepIndex) public pure returns (uint8)
{
int result = step_int( min, max, stepCount, stepIndex );
return result < 0 ? 0 : result > 255 ? 255 : uint8(result);
}
function map_uint256(uint256 value, uint256 min, uint256 max) public pure returns (uint256)
{
return min + ((value * (max - min)) / 255);
}
function map_uint8(uint8 value, uint8 min, uint8 max) public pure returns (uint8)
{
return uint8(int(min) + ((int(value) * int(max - min)) / 255));
}
function rshift_bytes20(bytes20 buffer, uint256 bits) public pure returns (bytes20)
{
uint256 b = bits % (20*8);
return (buffer >> b) | (buffer << (20*8-b));
}
function lshift_bytes20(bytes20 buffer, uint256 bits) public pure returns (bytes20)
{
uint256 b = bits % (20*8);
return (buffer << b) | (buffer >> (20*8-b));
}
function sum_bytes20(bytes20 buffer) public pure returns (uint256)
{
uint256 sum = 0;
for(uint8 i = 0 ; i < 20 ; ++i) {
sum += uint8(buffer[i]);
}
return sum;
}
// HSV Conversion from
// https://stackoverflow.com/a/14733008/360930
function hsvToRgb(uint8 h, uint8 s, uint8 v) public pure returns (uint8, uint8, uint8)
{
if (s == 0) {
return (v, v, v);
}
int region = h / 43;
int remainder = (h - (region * 43)) * 6;
int p = (v * (255 - s)) >> 8;
int q = (v * (255 - ((s * remainder) >> 8))) >> 8;
int t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
if(region == 0) {
return(v, uint8(t), uint8(p));
} else if (region == 1) {
return(uint8(q), v, uint8(p));
} else if (region == 2) {
return(uint8(p), v, uint8(t));
} else if (region == 3) {
return(uint8(p), uint8(q), v);
} else if (region == 4) {
return(uint8(t), uint8(p), v);
}
return(v, uint8(p), uint8(q));
}
function reduceColors(bytes20 s0, bytes20 s1, bytes20 s2, uint8 colorCount, uint256 offset) public pure returns (uint8[] memory)
{
uint8[] memory c3 = new uint8[](colorCount*3);
uint256 sum0 = sum_bytes20(s0) + sum_bytes20(s1);
uint256 sum2 = sum_bytes20(s2);
bytes20 hues = lshift_bytes20(s2, sum2 + (offset*8));
for(uint8 c = 0 ; c < colorCount ; c++) {
uint8 h = uint8(hues[c]);
uint8 s = map_uint8(uint8((uint256(uint8(hues[c+10])) + sum0*3) % 256), (64+(5-(colorCount/2))*30), 255);
uint8 v = map_uint8(h|uint8((uint256(uint8(hues[c+10])) + sum0) % 256), (127+(5-(colorCount/2))*30), 255);
h = uint8(map_uint256(h, sum2, sum2+map_uint8(uint8((sum2+sum0)%256),100,240))%256);
// h = uint8(map_uint256(h, lh, lh+192)%256);
(c3[c*3+0], c3[c*3+1], c3[c*3+2]) = hsvToRgb(h,s,v);
}
return (c3);
}
//
// From truffle/Assert.sol
// MIT Licence
//
uint8 constant ZERO = uint8(bytes1('0'));
uint8 constant A = uint8(bytes1('a'));
bytes1 constant MINUS = bytes1('-');
function utoa(uint n) public pure returns (string memory)
{
return utoa(n, 10);
}
function utoa(uint n, uint8 radix) public pure returns (string memory) {
if (n == 0 || radix < 2 || radix > 16)
return '0';
bytes memory bts = new bytes(256);
uint i;
while (n > 0) {
bts[i++] = _utoa(uint8(uint(n % radix))); // Turn it to ascii.
n /= radix;
}
// Reverse
bytes memory rev = new bytes(i);
for (uint j = 0; j < i; j++)
rev[j] = bts[i - j - 1];
return string(rev);
}
function _utoa(uint8 u) public pure returns (bytes1) {
if (u < 10)
return bytes1(u + ZERO);
else if (u < 16)
return bytes1(u - 10 + A);
else
return 0;
}
}
|
--------------------------- Convert
|
{
function convertBlockHashToAddress(uint256 blockNumber) public view returns (address)
pragma solidity >=0.6.0 <0.8.0;
{
return address(uint160(bytes20(blockhash(blockNumber))));
}
function getBlockSeed() public view returns (bytes20)
{
address s = convertBlockHashToAddress(block.number);
if( s == address(0) && block.number > 0 )
s = convertBlockHashToAddress(block.number-1);
return bytes20(s);
}
function convertBytesToHexString(bytes memory values) public pure returns (string memory)
{
bytes memory result = new bytes(values.length*2);
for(uint8 i = 0; i < values.length; i++)
{
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(values[i]>>4) : uint8(values[i] & 0x0f) );
result[i*2+j] = v > 9 ? byte(55+v) : byte(48+v);
}
}
return string(result);
}
function convertBytesToHexString(bytes memory values) public pure returns (string memory)
{
bytes memory result = new bytes(values.length*2);
for(uint8 i = 0; i < values.length; i++)
{
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(values[i]>>4) : uint8(values[i] & 0x0f) );
result[i*2+j] = v > 9 ? byte(55+v) : byte(48+v);
}
}
return string(result);
}
function convertBytesToHexString(bytes memory values) public pure returns (string memory)
{
bytes memory result = new bytes(values.length*2);
for(uint8 i = 0; i < values.length; i++)
{
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(values[i]>>4) : uint8(values[i] & 0x0f) );
result[i*2+j] = v > 9 ? byte(55+v) : byte(48+v);
}
}
return string(result);
}
function convertByteToHexString(byte b) public pure returns (string memory)
{
bytes memory result = new bytes(2);
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(b>>4) : uint8(b & 0x0f) );
result[j] = v > 9 ? byte(55+v) : byte(48+v);
}
return string(result);
}
function convertByteToHexString(byte b) public pure returns (string memory)
{
bytes memory result = new bytes(2);
for(uint8 j = 0 ; j < 2; j++)
{
uint8 v = ( j == 0 ? uint8(b>>4) : uint8(b & 0x0f) );
result[j] = v > 9 ? byte(55+v) : byte(48+v);
}
return string(result);
}
function clamp_uint256(uint256 value, uint256 min, uint256 max) public pure returns (uint256)
{
return value < min ? min : value > max ? max : value;
}
function min_uint256(uint256 a, uint256 b) public pure returns (uint256) {
return a < b ? a : b;
}
function max_uint256(uint256 a, uint256 b) public pure returns (uint256) {
return a > b ? a : b;
}
function percent_uint256(uint256 value, uint256 percentage) public pure returns (uint256)
{
return value * percentage / 100;
}
function step_int(int min, int max, int stepCount, int stepIndex) public pure returns (int)
{
if( stepIndex <= 0 || stepCount <= 1 || min == max )
return min;
if( stepIndex >= stepCount - 1 )
return max;
int d = (max - min) / (stepCount - 1);
return min + (d * stepIndex);
}
function step_uint8(uint8 min, uint8 max, uint8 stepCount, uint8 stepIndex) public pure returns (uint8)
{
int result = step_int( min, max, stepCount, stepIndex );
return result < 0 ? 0 : result > 255 ? 255 : uint8(result);
}
function map_uint256(uint256 value, uint256 min, uint256 max) public pure returns (uint256)
{
return min + ((value * (max - min)) / 255);
}
function map_uint8(uint8 value, uint8 min, uint8 max) public pure returns (uint8)
{
return uint8(int(min) + ((int(value) * int(max - min)) / 255));
}
function rshift_bytes20(bytes20 buffer, uint256 bits) public pure returns (bytes20)
{
uint256 b = bits % (20*8);
return (buffer >> b) | (buffer << (20*8-b));
}
function lshift_bytes20(bytes20 buffer, uint256 bits) public pure returns (bytes20)
{
uint256 b = bits % (20*8);
return (buffer << b) | (buffer >> (20*8-b));
}
function sum_bytes20(bytes20 buffer) public pure returns (uint256)
{
uint256 sum = 0;
for(uint8 i = 0 ; i < 20 ; ++i) {
sum += uint8(buffer[i]);
}
return sum;
}
function sum_bytes20(bytes20 buffer) public pure returns (uint256)
{
uint256 sum = 0;
for(uint8 i = 0 ; i < 20 ; ++i) {
sum += uint8(buffer[i]);
}
return sum;
}
function hsvToRgb(uint8 h, uint8 s, uint8 v) public pure returns (uint8, uint8, uint8)
{
if (s == 0) {
return (v, v, v);
}
int region = h / 43;
int remainder = (h - (region * 43)) * 6;
int p = (v * (255 - s)) >> 8;
int q = (v * (255 - ((s * remainder) >> 8))) >> 8;
int t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
if(region == 0) {
return(v, uint8(t), uint8(p));
return(uint8(q), v, uint8(p));
return(uint8(p), v, uint8(t));
return(uint8(p), uint8(q), v);
return(uint8(t), uint8(p), v);
}
return(v, uint8(p), uint8(q));
}
function hsvToRgb(uint8 h, uint8 s, uint8 v) public pure returns (uint8, uint8, uint8)
{
if (s == 0) {
return (v, v, v);
}
int region = h / 43;
int remainder = (h - (region * 43)) * 6;
int p = (v * (255 - s)) >> 8;
int q = (v * (255 - ((s * remainder) >> 8))) >> 8;
int t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
if(region == 0) {
return(v, uint8(t), uint8(p));
return(uint8(q), v, uint8(p));
return(uint8(p), v, uint8(t));
return(uint8(p), uint8(q), v);
return(uint8(t), uint8(p), v);
}
return(v, uint8(p), uint8(q));
}
function hsvToRgb(uint8 h, uint8 s, uint8 v) public pure returns (uint8, uint8, uint8)
{
if (s == 0) {
return (v, v, v);
}
int region = h / 43;
int remainder = (h - (region * 43)) * 6;
int p = (v * (255 - s)) >> 8;
int q = (v * (255 - ((s * remainder) >> 8))) >> 8;
int t = (v * (255 - ((s * (255 - remainder)) >> 8))) >> 8;
if(region == 0) {
return(v, uint8(t), uint8(p));
return(uint8(q), v, uint8(p));
return(uint8(p), v, uint8(t));
return(uint8(p), uint8(q), v);
return(uint8(t), uint8(p), v);
}
return(v, uint8(p), uint8(q));
}
} else if (region == 1) {
} else if (region == 2) {
} else if (region == 3) {
} else if (region == 4) {
function reduceColors(bytes20 s0, bytes20 s1, bytes20 s2, uint8 colorCount, uint256 offset) public pure returns (uint8[] memory)
{
uint8[] memory c3 = new uint8[](colorCount*3);
uint256 sum0 = sum_bytes20(s0) + sum_bytes20(s1);
uint256 sum2 = sum_bytes20(s2);
bytes20 hues = lshift_bytes20(s2, sum2 + (offset*8));
for(uint8 c = 0 ; c < colorCount ; c++) {
uint8 h = uint8(hues[c]);
uint8 s = map_uint8(uint8((uint256(uint8(hues[c+10])) + sum0*3) % 256), (64+(5-(colorCount/2))*30), 255);
uint8 v = map_uint8(h|uint8((uint256(uint8(hues[c+10])) + sum0) % 256), (127+(5-(colorCount/2))*30), 255);
h = uint8(map_uint256(h, sum2, sum2+map_uint8(uint8((sum2+sum0)%256),100,240))%256);
(c3[c*3+0], c3[c*3+1], c3[c*3+2]) = hsvToRgb(h,s,v);
}
return (c3);
}
uint8 constant A = uint8(bytes1('a'));
bytes1 constant MINUS = bytes1('-');
function reduceColors(bytes20 s0, bytes20 s1, bytes20 s2, uint8 colorCount, uint256 offset) public pure returns (uint8[] memory)
{
uint8[] memory c3 = new uint8[](colorCount*3);
uint256 sum0 = sum_bytes20(s0) + sum_bytes20(s1);
uint256 sum2 = sum_bytes20(s2);
bytes20 hues = lshift_bytes20(s2, sum2 + (offset*8));
for(uint8 c = 0 ; c < colorCount ; c++) {
uint8 h = uint8(hues[c]);
uint8 s = map_uint8(uint8((uint256(uint8(hues[c+10])) + sum0*3) % 256), (64+(5-(colorCount/2))*30), 255);
uint8 v = map_uint8(h|uint8((uint256(uint8(hues[c+10])) + sum0) % 256), (127+(5-(colorCount/2))*30), 255);
h = uint8(map_uint256(h, sum2, sum2+map_uint8(uint8((sum2+sum0)%256),100,240))%256);
(c3[c*3+0], c3[c*3+1], c3[c*3+2]) = hsvToRgb(h,s,v);
}
return (c3);
}
uint8 constant A = uint8(bytes1('a'));
bytes1 constant MINUS = bytes1('-');
uint8 constant ZERO = uint8(bytes1('0'));
function utoa(uint n) public pure returns (string memory)
{
return utoa(n, 10);
}
function utoa(uint n, uint8 radix) public pure returns (string memory) {
if (n == 0 || radix < 2 || radix > 16)
return '0';
bytes memory bts = new bytes(256);
uint i;
while (n > 0) {
n /= radix;
}
for (uint j = 0; j < i; j++)
rev[j] = bts[i - j - 1];
return string(rev);
}
function utoa(uint n, uint8 radix) public pure returns (string memory) {
if (n == 0 || radix < 2 || radix > 16)
return '0';
bytes memory bts = new bytes(256);
uint i;
while (n > 0) {
n /= radix;
}
for (uint j = 0; j < i; j++)
rev[j] = bts[i - j - 1];
return string(rev);
}
bytes memory rev = new bytes(i);
function _utoa(uint8 u) public pure returns (bytes1) {
if (u < 10)
return bytes1(u + ZERO);
else if (u < 16)
return bytes1(u - 10 + A);
else
return 0;
}
}
| 2,268,125 |
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] |
./full_match/43114/0x0c2cBF80f43B50fdd99DA0471814C82863E582b8/sources/contracts/BuybackProtocol.sol
|
@dev Swap USDC for AYIELD Tokens generate the AYIELD pair path of token -> USDC Give Pangolin Router Allowance to Spend Tokens Make the swap for AYIELD with USDC
|
function buyback(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(USDC);
path[1] = address(AYIELD);
USDC.approve(address(pangolinRouter), tokenAmount);
AYIELD.approve(address(pangolinRouter), tokenAmount);
pangolinRouter.swapExactTokensForTokensSupportingFeeOnTransferTokens(
tokenAmount,
path,
address(this),
block.timestamp
);
}
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// File: @openzeppelin/contracts-ethereum-package/contracts/utils/EnumerableSet.sol
pragma solidity ^0.6.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`
* (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(value)));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint256(_at(set._inner, index)));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/utils/Address.sol
pragma solidity ^0.6.2;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/Initializable.sol
pragma solidity >=0.4.24 <0.7.0;
/**
* @title Initializable
*
* @dev Helper contract to support initializer functions. To use it, replace
* the constructor with a function that has the `initializer` modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*/
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized");
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
initialized = true;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
address self = address(this);
uint256 cs;
assembly { cs := extcodesize(self) }
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/GSN/Context.sol
pragma solidity ^0.6.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract ContextUpgradeSafe is Initializable {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/access/AccessControl.sol
pragma solidity ^0.6.0;
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, _msgSender()));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*/
abstract contract AccessControlUpgradeSafe is Initializable, ContextUpgradeSafe {
function __AccessControl_init() internal initializer {
__Context_init_unchained();
__AccessControl_init_unchained();
}
function __AccessControl_init_unchained() internal initializer {
}
using EnumerableSet for EnumerableSet.AddressSet;
using Address for address;
struct RoleData {
EnumerableSet.AddressSet members;
bytes32 adminRole;
}
mapping (bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view returns (bool) {
return _roles[role].members.contains(account);
}
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) public view returns (uint256) {
return _roles[role].members.length();
}
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) public view returns (address) {
return _roles[role].members.at(index);
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant");
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke");
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
_roles[role].adminRole = adminRole;
}
function _grantRole(bytes32 role, address account) private {
if (_roles[role].members.add(account)) {
emit RoleGranted(role, account, _msgSender());
}
}
function _revokeRole(bytes32 role, address account) private {
if (_roles[role].members.remove(account)) {
emit RoleRevoked(role, account, _msgSender());
}
}
uint256[49] private __gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: @openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20MinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20UpgradeSafe is Initializable, ContextUpgradeSafe, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
function __ERC20_init(string memory name, string memory symbol) internal initializer {
__Context_init_unchained();
__ERC20_init_unchained(name, symbol);
}
function __ERC20_init_unchained(string memory name, string memory symbol) internal initializer {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
uint256[44] private __gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/utils/Pausable.sol
pragma solidity ^0.6.0;
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
contract PausableUpgradeSafe is Initializable, ContextUpgradeSafe {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
function __Pausable_init() internal initializer {
__Context_init_unchained();
__Pausable_init_unchained();
}
function __Pausable_init_unchained() internal initializer {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!_paused, "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(_paused, "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
uint256[49] private __gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20Pausable.sol
pragma solidity ^0.6.0;
/**
* @dev ERC20 token with pausable token transfers, minting and burning.
*
* Useful for scenarios such as preventing trades until the end of an evaluation
* period, or having an emergency switch for freezing all token transfers in the
* event of a large bug.
*/
abstract contract ERC20PausableUpgradeSafe is Initializable, ERC20UpgradeSafe, PausableUpgradeSafe {
function __ERC20Pausable_init() internal initializer {
__Context_init_unchained();
__Pausable_init_unchained();
__ERC20Pausable_init_unchained();
}
function __ERC20Pausable_init_unchained() internal initializer {
}
/**
* @dev See {ERC20-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
require(!paused(), "ERC20Pausable: token transfer while paused");
}
uint256[50] private __gap;
}
// File: @openzeppelin/contracts-ethereum-package/contracts/token/ERC20/ERC20Burnable.sol
pragma solidity ^0.6.0;
/**
* @dev Extension of {ERC20} that allows token holders to destroy both their own
* tokens and those that they have an allowance for, in a way that can be
* recognized off-chain (via event analysis).
*/
abstract contract ERC20BurnableUpgradeSafe is Initializable, ContextUpgradeSafe, ERC20UpgradeSafe {
function __ERC20Burnable_init() internal initializer {
__Context_init_unchained();
__ERC20Burnable_init_unchained();
}
function __ERC20Burnable_init_unchained() internal initializer {
}
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/
function burnFrom(address account, uint256 amount) public virtual {
uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");
_approve(account, _msgSender(), decreasedAllowance);
_burn(account, amount);
}
uint256[50] private __gap;
}
// File: contracts/SwapToken.sol
pragma solidity ^0.6.0;
/**
* @dev {ERC20} token, including:
*
* - ability for holders to burn (destroy) their tokens
* - a minter role that allows for token minting (creation)
* - a pauser role that allows to stop all token transfers
*
* This contract uses {AccessControl} to lock permissioned functions using the
* different roles - head to its documentation for details.
*
* The account that deploys the contract will be granted the minter and pauser
* roles, as well as the default admin role, which will let it grant both minter
* and pauser roles to aother accounts
*/
contract SwapToken is Initializable, ContextUpgradeSafe, AccessControlUpgradeSafe, ERC20BurnableUpgradeSafe, ERC20PausableUpgradeSafe {
bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
/**
* @dev Grants `DEFAULT_ADMIN_ROLE` and `PAUSER_ROLE` to the
* account that deploys the contract.
*
* See {ERC20-constructor}.
*/
function initialize(string memory name, string memory symbol, uint8 decimals, uint256 totalSupply) public {
__SwapToken_init(name, symbol, decimals, totalSupply);
}
function __SwapToken_init(string memory name, string memory symbol, uint8 decimals, uint256 totalSupply) internal initializer {
__Context_init_unchained();
__AccessControl_init_unchained();
__ERC20_init_unchained(name, symbol);
__ERC20Burnable_init_unchained();
__Pausable_init_unchained();
__ERC20Pausable_init_unchained();
__SwapToken_init_unchained();
_mint(_msgSender(), totalSupply * (10 ** uint256(decimals)));
}
function __SwapToken_init_unchained() internal initializer {
_setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
_setupRole(PAUSER_ROLE, _msgSender());
}
/**
* @dev Pauses all token transfers.
*
* See {ERC20Pausable} and {Pausable-_pause}.
*
* Requirements:
*
* - the caller must have the `PAUSER_ROLE`.
*/
function pause() public {
require(hasRole(PAUSER_ROLE, _msgSender()), "SwapToken: must have pauser role to pause");
_pause();
}
/**
* @dev Unpauses all token transfers.
*
* See {ERC20Pausable} and {Pausable-_unpause}.
*
* Requirements:
*
* - the caller must have the `PAUSER_ROLE`.
*/
function unpause() public {
require(hasRole(PAUSER_ROLE, _msgSender()), "SwapToken: must have pauser role to unpause");
_unpause();
}
function _beforeTokenTransfer(address from, address to, uint256 amount)
internal
override(ERC20UpgradeSafe, ERC20PausableUpgradeSafe)
notBlacklisted(to)
notBlacklisted(from)
{
require(to != address(this), "SwapToken: can't transfer to contract address itself");
super._beforeTokenTransfer(from, to, amount);
}
function _approve(address owner, address spender, uint256 amount)
internal
override(ERC20UpgradeSafe)
notBlacklisted(owner)
notBlacklisted(spender)
{
super._approve(owner, spender, amount);
}
function withdrawTokens(address tokenContract) external {
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "SwapToken [withdrawTokens]: must have admin role to withdraw");
IERC20 tc = IERC20(tokenContract);
require(tc.transfer(_msgSender(), tc.balanceOf(address(this))), "SwapToken [withdrawTokens] Something went wrong while transferring");
}
function version() public pure returns (string memory) {
return "v3";
}
uint256[50] private __gap;
//BlackListing
mapping(address => bool) internal blacklisted;
event Blacklisted(address indexed _account);
event UnBlacklisted(address indexed _account);
/**
* @dev Throws if argument account is blacklisted
* @param _account The address to check
*/
modifier notBlacklisted(address _account) {
require(blacklisted[_account] == false);
_;
}
/**
* @dev Checks if account is blacklisted
* @param _account The address to check
*/
function isBlacklisted(address _account) public view returns (bool) {
return blacklisted[_account];
}
/**
* @dev Adds account to blacklist
* @param _account The address to blacklist
*/
function blacklist(address _account) external {
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "SwapToken [blacklist]: must have admin role to blacklist");
blacklisted[_account] = true;
emit Blacklisted(_account);
}
/**
* @dev Removes account from blacklist
* @param _account The address to remove from the blacklist
*/
function unBlacklist(address _account) external {
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "SwapToken [unBlacklist]: must have admin role to unBlacklist");
blacklisted[_account] = false;
emit UnBlacklisted(_account);
}
}
|
* @dev Throws if argument account is blacklisted @param _account The address to check/
|
modifier notBlacklisted(address _account) {
require(blacklisted[_account] == false);
_;
}
| 635,971 |
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pragma solidity 0.4.21;
// File: contracts/BytesDeserializer.sol
/*
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/*
* Deserialize bytes payloads.
*
* Values are in big-endian byte order.
*
*/
library BytesDeserializer {
/*
* Extract 256-bit worth of data from the bytes stream.
*/
function slice32(bytes b, uint offset) public pure returns (bytes32) {
bytes32 out;
for (uint i = 0; i < 32; i++) {
out |= bytes32(b[offset + i] & 0xFF) >> (i * 8);
}
return out;
}
/*
* Extract Ethereum address worth of data from the bytes stream.
*/
function sliceAddress(bytes b, uint offset) public pure returns (address) {
bytes32 out;
for (uint i = 0; i < 20; i++) {
out |= bytes32(b[offset + i] & 0xFF) >> ((i+12) * 8);
}
return address(uint(out));
}
/*
* Extract 128-bit worth of data from the bytes stream.
*/
function slice16(bytes b, uint offset) public pure returns (bytes16) {
bytes16 out;
for (uint i = 0; i < 16; i++) {
out |= bytes16(b[offset + i] & 0xFF) >> (i * 8);
}
return out;
}
/*
* Extract 32-bit worth of data from the bytes stream.
*/
function slice4(bytes b, uint offset) public pure returns (bytes4) {
bytes4 out;
for (uint i = 0; i < 4; i++) {
out |= bytes4(b[offset + i] & 0xFF) >> (i * 8);
}
return out;
}
/*
* Extract 16-bit worth of data from the bytes stream.
*/
function slice2(bytes b, uint offset) public pure returns (bytes2) {
bytes2 out;
for (uint i = 0; i < 2; i++) {
out |= bytes2(b[offset + i] & 0xFF) >> (i * 8);
}
return out;
}
}
// File: contracts/KYCPayloadDeserializer.sol
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* A mix-in contract to decode AML payloads.
*
* @notice This should be a library, but for the complexity and toolchain fragility risks involving of linking library inside library, we put this as a mix-in.
*/
contract KYCPayloadDeserializer {
using BytesDeserializer for bytes;
/**
* This function takes the dataframe and unpacks it
* We have the users ETH address for verification that they are using their own signature
* CustomerID so we can track customer purchases
* Min/Max ETH to invest for AML/CTF purposes - this can be supplied by the user OR by the back-end.
*/
function getKYCPayload(bytes dataframe) public pure returns(address whitelistedAddress, uint128 customerId, uint32 minEth, uint32 maxEth) {
address _whitelistedAddress = dataframe.sliceAddress(0);
uint128 _customerId = uint128(dataframe.slice16(20));
uint32 _minETH = uint32(dataframe.slice4(36));
uint32 _maxETH = uint32(dataframe.slice4(40));
return (_whitelistedAddress, _customerId, _minETH, _maxETH);
}
}
// File: contracts/Ownable.sol
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
// File: contracts/ERC20Basic.sol
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
uint256 public totalSupply;
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
// File: contracts/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: contracts/BasicToken.sol
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
// File: contracts/ERC20.sol
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: contracts/StandardToken.sol
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
// File: contracts/ReleasableToken.sol
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*
* Some of this code has been updated by Pickeringware ltd to faciliatte the new solidity compilation requirements
*/
pragma solidity 0.4.21;
/**
* Define interface for releasing the token transfer after a successful crowdsale.
*/
contract ReleasableToken is StandardToken, Ownable {
/* The finalizer contract that allows unlift the transfer limits on this token */
address public releaseAgent;
/** A crowdsale contract can release us to the wild if ICO success. If false we are are in transfer lock up period.*/
bool public released = false;
/** Map of agents that are allowed to transfer tokens regardless of the lock down period. These are crowdsale contracts and possible the team multisig itself. */
mapping (address => bool) public transferAgents;
/**
* Limit token transfer until the crowdsale is over.
*
*/
modifier canTransfer(address _sender) {
if(!released) {
if(!transferAgents[_sender]) {
revert();
}
}
_;
}
/**
* Set the contract that can call release and make the token transferable.
*
* Design choice. Allow reset the release agent to fix fat finger mistakes.
*/
function setReleaseAgent() onlyOwner inReleaseState(false) public {
// We don't do interface check here as we might want to a normal wallet address to act as a release agent
releaseAgent = owner;
}
/**
* Owner can allow a particular address (a crowdsale contract) to transfer tokens despite the lock up period.
*/
function setTransferAgent(address addr, bool state) onlyReleaseAgent inReleaseState(false) public {
transferAgents[addr] = state;
}
/**
* One way function to release the tokens to the wild.
*
* Can be called only from the release agent that is the final ICO contract. It is only called if the crowdsale has been success (first milestone reached).
*/
function releaseTokenTransfer() public onlyReleaseAgent {
released = true;
}
/** The function can be called only before or after the tokens have been releasesd */
modifier inReleaseState(bool releaseState) {
if(releaseState != released) {
revert();
}
_;
}
/** The function can be called only by a whitelisted release agent. */
modifier onlyReleaseAgent() {
if(msg.sender != releaseAgent) {
revert();
}
_;
}
function transfer(address _to, uint _value) canTransfer(msg.sender) public returns (bool success) {
// Call StandardToken.transfer()
return super.transfer(_to, _value);
}
function transferFrom(address _from, address _to, uint _value) canTransfer(_from) public returns (bool success) {
// Call StandardToken.transferForm()
return super.transferFrom(_from, _to, _value);
}
}
// File: contracts/MintableToken.sol
/**
* @title Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*
* Some of this code has been changed by Pickeringware ltd to facilitate solidities new compilation requirements
*/
contract MintableToken is ReleasableToken {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(address(0), _to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner canMint public returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
// File: contracts/AMLToken.sol
/**
* This contract has been written by Pickeringware ltd in some areas to facilitate custom crwodsale features
*/
pragma solidity 0.4.21;
/**
* The AML Token
*
* This subset of MintableCrowdsaleToken gives the Owner a possibility to
* reclaim tokens from a participant before the token is released
* after a participant has failed a prolonged AML process.
*
* It is assumed that the anti-money laundering process depends on blockchain data.
* The data is not available before the transaction and not for the smart contract.
* Thus, we need to implement logic to handle AML failure cases post payment.
* We give a time window before the token release for the token sale owners to
* complete the AML and claw back all token transactions that were
* caused by rejected purchases.
*/
contract AMLToken is MintableToken {
// An event when the owner has reclaimed non-released tokens
event ReclaimedAllAndBurned(address claimedBy, address fromWhom, uint amount);
// An event when the owner has reclaimed non-released tokens
event ReclaimAndBurned(address claimedBy, address fromWhom, uint amount);
/// @dev Here the owner can reclaim the tokens from a participant if
/// the token is not released yet. Refund will be handled in sale contract.
/// We also burn the tokens in the interest of economic value to the token holder
/// @param fromWhom address of the participant whose tokens we want to claim
function reclaimAllAndBurn(address fromWhom) public onlyReleaseAgent inReleaseState(false) {
uint amount = balanceOf(fromWhom);
balances[fromWhom] = 0;
totalSupply = totalSupply.sub(amount);
ReclaimedAllAndBurned(msg.sender, fromWhom, amount);
}
/// @dev Here the owner can reclaim the tokens from a participant if
/// the token is not released yet. Refund will be handled in sale contract.
/// We also burn the tokens in the interest of economic value to the token holder
/// @param fromWhom address of the participant whose tokens we want to claim
function reclaimAndBurn(address fromWhom, uint256 amount) public onlyReleaseAgent inReleaseState(false) {
balances[fromWhom] = balances[fromWhom].sub(amount);
totalSupply = totalSupply.sub(amount);
ReclaimAndBurned(msg.sender, fromWhom, amount);
}
}
// File: contracts/PickToken.sol
/*
* This token is part of Pickeringware ltds smart contracts
* It is used to specify certain details about the token upon release
*/
contract PickToken is AMLToken {
string public name = "AX1 Mining token";
string public symbol = "AX1";
uint8 public decimals = 5;
}
// File: contracts/Stoppable.sol
contract Stoppable is Ownable {
bool public halted;
event SaleStopped(address owner, uint256 datetime);
modifier stopInEmergency {
require(!halted);
_;
}
function hasHalted() internal view returns (bool isHalted) {
return halted;
}
// called by the owner on emergency, triggers stopped state
function stopICO() external onlyOwner {
halted = true;
SaleStopped(msg.sender, now);
}
}
// File: contracts/Crowdsale.sol
/**
* @title Crowdsale
* @dev Crowdsale is a base contract for managing a token crowdsale.
* Crowdsales have a start and end timestamps, where investors can make
* token purchases and the crowdsale will assign them tokens based
* on a token per ETH rate. Funds collected are forwarded to a wallet
* as they arrive.
*
* This base contract has been changed in certain areas by Pickeringware ltd to facilitate extra functionality
*/
contract Crowdsale is Stoppable {
using SafeMath for uint256;
// The token being sold
PickToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are collected
address public wallet;
address public contractAddr;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
uint256 public presaleWeiRaised;
// amount of tokens sent
uint256 public tokensSent;
// These store balances of participants by ID, address and in wei, pre-sale wei and tokens
mapping(uint128 => uint256) public balancePerID;
mapping(address => uint256) public balanceOf;
mapping(address => uint256) public presaleBalanceOf;
mapping(address => uint256) public tokenBalanceOf;
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param beneficiary who got the tokens
* @param value weis paid for purchase
* @param amount amount of tokens purchased
*/
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount, uint256 datetime);
/*
* Contructor
* This initialises the basic crowdsale data
* It transfers ownership of this token to the chosen beneficiary
*/
function Crowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, PickToken _token) public {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != address(0));
token = _token;
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
transferOwnership(_wallet);
}
/*
* This method has been changed by Pickeringware ltd
* We have split this method down into overidable functions which may affect how users purchase tokens
* We also take in a customerID (UUiD v4) which we store in our back-end in order to track users participation
*/
function buyTokens(uint128 buyer) internal stopInEmergency {
require(buyer != 0);
uint256 weiAmount = msg.value;
// calculate token amount to be created
uint256 tokens = tokensToRecieve(weiAmount);
// MUST DO REQUIRE AFTER tokens are calculated to check for cap restrictions in stages
require(validPurchase(tokens));
// We move the participants sliders before we mint the tokens to prevent re-entrancy
finalizeSale(weiAmount, tokens, buyer);
produceTokens(msg.sender, weiAmount, tokens);
}
// This function was created to be overridden by a parent contract
function produceTokens(address buyer, uint256 weiAmount, uint256 tokens) internal {
token.mint(buyer, tokens);
TokenPurchase(msg.sender, buyer, weiAmount, tokens, now);
}
// This was created to be overriden by stages implementation
// It will adjust the stage sliders accordingly if needed
function finalizeSale(uint256 _weiAmount, uint256 _tokens, uint128 _buyer) internal {
// Collect ETH and send them a token in return
balanceOf[msg.sender] = balanceOf[msg.sender].add(_weiAmount);
tokenBalanceOf[msg.sender] = tokenBalanceOf[msg.sender].add(_tokens);
balancePerID[_buyer] = balancePerID[_buyer].add(_weiAmount);
// update state
weiRaised = weiRaised.add(_weiAmount);
tokensSent = tokensSent.add(_tokens);
}
// This was created to be overridden by the stages implementation
// Again, this is dependent on the price of tokens which may or may not be collected in stages
function tokensToRecieve(uint256 _wei) internal view returns (uint256 tokens) {
return _wei.div(rate);
}
// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
function successfulWithdraw() external onlyOwner stopInEmergency {
require(hasEnded());
owner.transfer(weiRaised);
}
// @return true if the transaction can buy tokens
// Receives tokens to send as variable for custom stage implementation
// Has an unused variable _tokens which is necessary for capped sale implementation
function validPurchase(uint256 _tokens) internal view returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
// @return true if crowdsale event has ended
function hasEnded() public view returns (bool) {
return now > endTime;
}
}
// File: contracts/CappedCrowdsale.sol
/**
* @title CappedCrowdsale
* @dev Extension of Crowdsale with a max amount of funds raised
*/
contract CappedCrowdsale is Crowdsale {
using SafeMath for uint256;
uint256 public softCap;
uint256 public hardCap;
uint256 public withdrawn;
bool public canWithdraw;
address public beneficiary;
event BeneficiaryWithdrawal(address admin, uint256 amount, uint256 datetime);
// Changed implentation to include soft/hard caps
function CappedCrowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, address _beneficiary, uint256 _softCap, uint256 _hardCap, PickToken _token)
Crowdsale(_startTime, _endTime, _rate, _wallet, _token)
public {
require(_hardCap > 0 && _softCap > 0 && _softCap < _hardCap);
softCap = _softCap;
hardCap = _hardCap;
withdrawn = 0;
canWithdraw = false;
beneficiary = _beneficiary;
}
// overriding Crowdsale#validPurchase to add extra cap logic
// @return true if investors can buy at the moment
function validPurchase(uint256 _tokens) internal view returns (bool) {
bool withinCap = tokensSent.add(_tokens) <= hardCap;
return super.validPurchase(_tokens) && withinCap;
}
// overriding Crowdsale#hasEnded to add cap logic
// @return true if crowdsale event has ended
function hasEnded() public view returns (bool) {
bool capReached = tokensSent >= hardCap;
return super.hasEnded() || capReached;
}
// overriding Crowdsale#successfulWithdraw to add cap logic
// only allow beneficiary to withdraw if softcap has been reached
// Uses withdrawn incase a parent contract requires withdrawing softcap early
function successfulWithdraw() external onlyOwner stopInEmergency {
require(hasEnded());
// This is used for extra functionality if necessary, i.e. KYC checks
require(canWithdraw);
require(tokensSent > softCap);
uint256 withdrawalAmount = weiRaised.sub(withdrawn);
withdrawn = withdrawn.add(withdrawalAmount);
beneficiary.transfer(withdrawalAmount);
BeneficiaryWithdrawal(msg.sender, withdrawalAmount, now);
}
}
// File: contracts/SaleStagesLib.sol
/*
* SaleStagesLib is a part of Pickeringware ltd's smart contracts
* Its intended use is to abstract the implementation of stages away from a contract to ease deployment and codel length
* It uses a stage struct to store specific details about each stage
* It has several functions which are used to get/change this data
*/
library SaleStagesLib {
using SafeMath for uint256;
// Stores Stage implementation
struct Stage{
uint256 deadline;
uint256 tokenPrice;
uint256 tokensSold;
uint256 minimumBuy;
uint256 cap;
}
// The struct that is stored by the contract
// Contains counter to iterate through map of stages
struct StageStorage {
mapping(uint8 => Stage) stages;
uint8 stageCount;
}
// Initiliase the stagecount to 0
function init(StageStorage storage self) public {
self.stageCount = 0;
}
// Create stage adds new stage to stages map and increments stage count
function createStage(
StageStorage storage self,
uint8 _stage,
uint256 _deadline,
uint256 _price,
uint256 _minimum,
uint256 _cap
) internal {
// Ensures stages cannot overlap each other
uint8 prevStage = _stage - 1;
require(self.stages[prevStage].deadline < _deadline);
self.stages[_stage].deadline = _deadline;
self.stages[_stage].tokenPrice = _price;
self.stages[_stage].tokensSold = 0;
self.stages[_stage].minimumBuy = _minimum;
self.stages[_stage].cap = _cap;
self.stageCount = self.stageCount + 1;
}
/*
* Crowdfund state machine management.
*
* We make it a function and do not assign the result to a variable, so there is no chance of the variable being stale.
* Each one of these conditions checks if the time has passed into another stage and therefore, act as appropriate
*/
function getStage(StageStorage storage self) public view returns (uint8 stage) {
uint8 thisStage = self.stageCount + 1;
for (uint8 i = 0; i < thisStage; i++) {
if(now <= self.stages[i].deadline){
return i;
}
}
return thisStage;
}
// Both of the below are checked on the overridden validPurchase() function
// Check to see if the tokens they're about to purchase is above the minimum for this stage
function checkMinimum(StageStorage storage self, uint8 _stage, uint256 _tokens) internal view returns (bool isValid) {
if(_tokens < self.stages[_stage].minimumBuy){
return false;
} else {
return true;
}
}
// Both of the below are checked on the overridden validPurchase() function
// Check to see if the tokens they're about to purchase is above the minimum for this stage
function changeDeadline(StageStorage storage self, uint8 _stage, uint256 _deadline) internal {
require(self.stages[_stage].deadline > now);
self.stages[_stage].deadline = _deadline;
}
// Checks to see if the tokens they're about to purchase is below the cap for this stage
function checkCap(StageStorage storage self, uint8 _stage, uint256 _tokens) internal view returns (bool isValid) {
uint256 totalTokens = self.stages[_stage].tokensSold.add(_tokens);
if(totalTokens > self.stages[_stage].cap){
return false;
} else {
return true;
}
}
// Refund a particular participant, by moving the sliders of stages he participated in
function refundParticipant(StageStorage storage self, uint256 stage1, uint256 stage2, uint256 stage3, uint256 stage4) internal {
self.stages[1].tokensSold = self.stages[1].tokensSold.sub(stage1);
self.stages[2].tokensSold = self.stages[2].tokensSold.sub(stage2);
self.stages[3].tokensSold = self.stages[3].tokensSold.sub(stage3);
self.stages[4].tokensSold = self.stages[4].tokensSold.sub(stage4);
}
// Both of the below are checked on the overridden validPurchase() function
// Check to see if the tokens they're about to purchase is above the minimum for this stage
function changePrice(StageStorage storage self, uint8 _stage, uint256 _tokenPrice) internal {
require(self.stages[_stage].deadline > now);
self.stages[_stage].tokenPrice = _tokenPrice;
}
}
// File: contracts/PickCrowdsale.sol
/*
* PickCrowdsale and PickToken are a part of Pickeringware ltd's smart contracts
* This uses the SaleStageLib which is also a part of Pickeringware ltd's smart contracts
* We create the stages initially in the constructor such that stages cannot be added after the sale has started
* We then pre-allocate necessary accounts prior to the sale starting
* This contract implements the stages lib functionality with overriding functions for stages implementation
*/
contract PickCrowdsale is CappedCrowdsale {
using SaleStagesLib for SaleStagesLib.StageStorage;
using SafeMath for uint256;
SaleStagesLib.StageStorage public stages;
bool preallocated = false;
bool stagesSet = false;
address private founders;
address private bounty;
address private buyer;
uint256 public burntBounty;
uint256 public burntFounder;
event ParticipantWithdrawal(address participant, uint256 amount, uint256 datetime);
event StagePriceChanged(address admin, uint8 stage, uint256 price);
event ExtendedStart(uint256 oldStart, uint256 newStart);
modifier onlyOnce(bool _check) {
if(_check) {
revert();
}
_;
}
function PickCrowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, address _beneficiary, address _buyer, address _founders, address _bounty, uint256 _softCap, uint256 _hardCap, PickToken _token)
CappedCrowdsale(_startTime, _endTime, _rate, _wallet, _beneficiary, _softCap, _hardCap, _token)
public {
stages.init();
stages.createStage(0, _startTime, 0, 0, 0);
founders = _founders;
bounty = _bounty;
buyer = _buyer;
}
function setPreallocations() external onlyOwner onlyOnce(preallocated) {
preallocate(buyer, 1250000, 10000000000);
preallocate(founders, 1777777, 0);
preallocate(bounty, 444445, 0);
preallocated = true;
}
function setStages() external onlyOwner onlyOnce(stagesSet) {
stages.createStage(1, startTime.add(1 weeks), 10000000000, 10000000, 175000000000); //Deadline 1 day (86400) after start - price: 0.001 - min: 90 - cap: 1,250,000
stages.createStage(2, startTime.add(2 weeks), 11000000000, 5000000, 300000000000); //Deadline 2 days (172800) after start - price: 0.0011 - min: 60 - cap: 3,000,000
stages.createStage(3, startTime.add(4 weeks), 12000000000, 2500000, 575000000000); //Deadline 4 days (345600) after start - price: 0.0012 - cap: 5,750,000
stages.createStage(4, endTime, 15000000000, 1000000, 2000000000000); //Deadline 1 week after start - price: 0.0015 - cap: 20,000,000
stagesSet = true;
}
// Creates new stage for the crowdsale
// Can ONLY be called by the owner of the contract as should never change after creating them on initialisation
function createStage(uint8 _stage, uint256 _deadline, uint256 _price, uint256 _minimum, uint256 _cap ) internal onlyOwner {
stages.createStage(_stage, _deadline, _price, _minimum, _cap);
}
// Creates new stage for the crowdsale
// Can ONLY be called by the owner of the contract as should never change after creating them on initialisation
function changePrice(uint8 _stage, uint256 _price) public onlyOwner {
stages.changePrice(_stage, _price);
StagePriceChanged(msg.sender, _stage, _price);
}
// Get stage is required to rethen the stage we are currently in
// This is necessary to check the stage details listed in the below functions
function getStage() public view returns (uint8 stage) {
return stages.getStage();
}
function getStageDeadline(uint8 _stage) public view returns (uint256 deadline) {
return stages.stages[_stage].deadline;
}
function getStageTokensSold(uint8 _stage) public view returns (uint256 sold) {
return stages.stages[_stage].tokensSold;
}
function getStageCap(uint8 _stage) public view returns (uint256 cap) {
return stages.stages[_stage].cap;
}
function getStageMinimum(uint8 _stage) public view returns (uint256 min) {
return stages.stages[_stage].minimumBuy;
}
function getStagePrice(uint8 _stage) public view returns (uint256 price) {
return stages.stages[_stage].tokenPrice;
}
// This is used for extending the sales start time (and the deadlines of each stage) accordingly
function extendStart(uint256 _newStart) external onlyOwner {
require(_newStart > startTime);
require(_newStart > now);
require(now < startTime);
uint256 difference = _newStart - startTime;
uint256 oldStart = startTime;
startTime = _newStart;
endTime = endTime + difference;
// Loop through every stage in the sale
for (uint8 i = 0; i < 4; i++) {
// Extend that stages deadline accordingly
uint256 temp = stages.stages[i].deadline;
temp = temp + difference;
stages.changeDeadline(i, temp);
}
ExtendedStart(oldStart, _newStart);
}
// @Override crowdsale contract to check the current stage price
// @return tokens investors are due to recieve
function tokensToRecieve(uint256 _wei) internal view returns (uint256 tokens) {
uint8 stage = getStage();
uint256 price = getStagePrice(stage);
return _wei.div(price);
}
// overriding Crowdsale validPurchase to add extra stage logic
// @return true if investors can buy at the moment
function validPurchase(uint256 _tokens) internal view returns (bool) {
bool isValid = false;
uint8 stage = getStage();
if(stages.checkMinimum(stage, _tokens) && stages.checkCap(stage, _tokens)){
isValid = true;
}
return super.validPurchase(_tokens) && isValid;
}
// Override crowdsale finalizeSale function to log balance change plus tokens sold in that stage
function finalizeSale(uint256 _weiAmount, uint256 _tokens, uint128 _buyer) internal {
// Collect ETH and send them a token in return
balanceOf[msg.sender] = balanceOf[msg.sender].add(_weiAmount);
tokenBalanceOf[msg.sender] = tokenBalanceOf[msg.sender].add(_tokens);
balancePerID[_buyer] = balancePerID[_buyer].add(_weiAmount);
// update state
weiRaised = weiRaised.add(_weiAmount);
tokensSent = tokensSent.add(_tokens);
uint8 stage = getStage();
stages.stages[stage].tokensSold = stages.stages[stage].tokensSold.add(_tokens);
}
/**
* Preallocate tokens for the early investors.
*/
function preallocate(address receiver, uint tokens, uint weiPrice) internal {
uint decimals = token.decimals();
uint tokenAmount = tokens * 10 ** decimals;
uint weiAmount = weiPrice * tokens;
presaleWeiRaised = presaleWeiRaised.add(weiAmount);
tokensSent = tokensSent.add(tokenAmount);
tokenBalanceOf[receiver] = tokenBalanceOf[receiver].add(tokenAmount);
presaleBalanceOf[receiver] = presaleBalanceOf[receiver].add(weiAmount);
produceTokens(receiver, weiAmount, tokenAmount);
}
// If the sale is unsuccessful (has halted or reached deadline and didnt reach softcap)
// Allows participants to withdraw their balance
function unsuccessfulWithdrawal() external {
require(balanceOf[msg.sender] > 0);
require(hasEnded() && tokensSent < softCap || hasHalted());
uint256 withdrawalAmount;
withdrawalAmount = balanceOf[msg.sender];
balanceOf[msg.sender] = 0;
msg.sender.transfer(withdrawalAmount);
assert(balanceOf[msg.sender] == 0);
ParticipantWithdrawal(msg.sender, withdrawalAmount, now);
}
// Burn the percentage of tokens not sold from the founders and bounty wallets
// Must do it this way as solidity doesnt deal with decimals
function burnFoundersTokens(uint256 _bounty, uint256 _founders) internal {
require(_founders < 177777700000);
require(_bounty < 44444500000);
// Calculate the number of tokens to burn from founders and bounty wallet
burntFounder = _founders;
burntBounty = _bounty;
token.reclaimAndBurn(founders, burntFounder);
token.reclaimAndBurn(bounty, burntBounty);
}
}
// File: contracts/KYCCrowdsale.sol
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*
* Some implementation has been changed by Pickeringware ltd to achieve custom features
*/
/*
* A crowdsale that allows only signed payload with server-side specified buy in limits.
*
* The token distribution happens as in the allocated crowdsale contract
*/
contract KYCCrowdsale is KYCPayloadDeserializer, PickCrowdsale {
/* Server holds the private key to this address to decide if the AML payload is valid or not. */
address public signerAddress;
mapping(address => uint256) public refundable;
mapping(address => bool) public refunded;
mapping(address => bool) public blacklist;
/* A new server-side signer key was set to be effective */
event SignerChanged(address signer);
event TokensReclaimed(address user, uint256 amount, uint256 datetime);
event AddedToBlacklist(address user, uint256 datetime);
event RemovedFromBlacklist(address user, uint256 datetime);
event RefundCollected(address user, uint256 datetime);
event TokensReleased(address agent, uint256 datetime, uint256 bounty, uint256 founders);
/*
* Constructor.
*/
function KYCCrowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, address _beneficiary, address _buyer, address _founders, address _bounty, uint256 _softCap, uint256 _hardCap, PickToken _token) public
PickCrowdsale(_startTime, _endTime, _rate, _wallet, _beneficiary, _buyer, _founders, _bounty, _softCap, _hardCap, _token)
{}
// This sets the token agent to the contract, allowing the contract to reclaim and burn tokens if necessary
function setTokenAgent() external onlyOwner {
// contractAddr = token.owner();
// Give the sale contract rights to reclaim tokens
token.setReleaseAgent();
}
/*
* This function was written by Pickeringware ltd to facilitate a refund action upon failure of KYC analysis
*
* It simply allows the participant to withdraw his ether from the sale
* Moves the crowdsale sliders accordingly
* Reclaims the users tokens and burns them
* Blacklists the user to prevent them from buying any more tokens
*
* Stage 1, 2, 3, & 4 are all collected from the database prior to calling this function
* It allows us to calculate how many tokens need to be taken from each individual stage
*/
function refundParticipant(address participant, uint256 _stage1, uint256 _stage2, uint256 _stage3, uint256 _stage4) external onlyOwner {
require(balanceOf[participant] > 0);
uint256 balance = balanceOf[participant];
uint256 tokens = tokenBalanceOf[participant];
balanceOf[participant] = 0;
tokenBalanceOf[participant] = 0;
// Refund the participant
refundable[participant] = balance;
// Move the crowdsale sliders
weiRaised = weiRaised.sub(balance);
tokensSent = tokensSent.sub(tokens);
// Reclaim the participants tokens and burn them
token.reclaimAllAndBurn(participant);
// Blacklist participant so they cannot make further purchases
blacklist[participant] = true;
AddedToBlacklist(participant, now);
stages.refundParticipant(_stage1, _stage2, _stage3, _stage4);
TokensReclaimed(participant, tokens, now);
}
// Allows only the beneficiary to release tokens to people
// This is needed as the token is owned by the contract, in order to mint tokens
// therefore, the owner essentially gives permission for the contract to release tokens
function releaseTokens(uint256 _bounty, uint256 _founders) onlyOwner external {
// Unless the hardcap was reached, theremust be tokens to burn
require(_bounty > 0 || tokensSent == hardCap);
require(_founders > 0 || tokensSent == hardCap);
burnFoundersTokens(_bounty, _founders);
token.releaseTokenTransfer();
canWithdraw = true;
TokensReleased(msg.sender, now, _bounty, _founders);
}
// overriding Crowdsale#validPurchase to add extra KYC blacklist logic
// @return true if investors can buy at the moment
function validPurchase(uint256 _tokens) internal view returns (bool) {
bool onBlackList;
if(blacklist[msg.sender] == true){
onBlackList = true;
} else {
onBlackList = false;
}
return super.validPurchase(_tokens) && !onBlackList;
}
// This is necessary for the blacklisted user to pull his ether from the contract upon being refunded
function collectRefund() external {
require(refundable[msg.sender] > 0);
require(refunded[msg.sender] == false);
uint256 theirwei = refundable[msg.sender];
refundable[msg.sender] = 0;
refunded[msg.sender] == true;
msg.sender.transfer(theirwei);
RefundCollected(msg.sender, now);
}
/*
* A token purchase with anti-money laundering and KYC checks
* This function takes in a dataframe and EC signature to verify if the purchaser has been verified
* on the server side of our application and has therefore, participated in KYC.
* Upon registering to the site, users are supplied with a signature allowing them to purchase tokens,
* which can be revoked at any time, this containst their ETH address, a unique ID and the min and max
* ETH that user has stated they will purchase. (Any more than the max may be subject to AML checks).
*/
function buyWithKYCData(bytes dataframe, uint8 v, bytes32 r, bytes32 s) public payable {
bytes32 hash = sha256(dataframe);
address whitelistedAddress;
uint128 customerId;
uint32 minETH;
uint32 maxETH;
(whitelistedAddress, customerId, minETH, maxETH) = getKYCPayload(dataframe);
// Check that the KYC data is signed by our server
require(ecrecover(hash, v, r, s) == signerAddress);
// Check that the user is using his own signature
require(whitelistedAddress == msg.sender);
// Check they are buying within their limits - THIS IS ONLY NEEDED IF SPECIFIED BY REGULATORS
uint256 weiAmount = msg.value;
uint256 max = maxETH;
uint256 min = minETH;
require(weiAmount < (max * 1 ether));
require(weiAmount > (min * 1 ether));
buyTokens(customerId);
}
/// @dev This function can set the server side address
/// @param _signerAddress The address derived from server's private key
function setSignerAddress(address _signerAddress) external onlyOwner {
// EC rcover returns 0 in case of error therefore, this CANNOT be 0.
require(_signerAddress != 0);
signerAddress = _signerAddress;
SignerChanged(signerAddress);
}
function removeFromBlacklist(address _blacklisted) external onlyOwner {
require(blacklist[_blacklisted] == true);
blacklist[_blacklisted] = false;
RemovedFromBlacklist(_blacklisted, now);
}
}
|
Creates new stage for the crowdsale Can ONLY be called by the owner of the contract as should never change after creating them on initialisation
|
function changePrice(uint8 _stage, uint256 _price) public onlyOwner {
stages.changePrice(_stage, _price);
StagePriceChanged(msg.sender, _stage, _price);
}
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pragma solidity 0.4.25;
library SafeMath8 {
function mul(uint8 a, uint8 b) internal pure returns (uint8) {
if (a == 0) {
return 0;
}
uint8 c = a * b;
assert(c / a == b);
return c;
}
function div(uint8 a, uint8 b) internal pure returns (uint8) {
return a / b;
}
function sub(uint8 a, uint8 b) internal pure returns (uint8) {
assert(b <= a);
return a - b;
}
function add(uint8 a, uint8 b) internal pure returns (uint8) {
uint8 c = a + b;
assert(c >= a);
return c;
}
function pow(uint8 a, uint8 b) internal pure returns (uint8) {
if (a == 0) return 0;
if (b == 0) return 1;
uint8 c = a ** b;
assert(c / (a ** (b - 1)) == a);
return c;
}
}
library SafeMath16 {
function mul(uint16 a, uint16 b) internal pure returns (uint16) {
if (a == 0) {
return 0;
}
uint16 c = a * b;
assert(c / a == b);
return c;
}
function div(uint16 a, uint16 b) internal pure returns (uint16) {
return a / b;
}
function sub(uint16 a, uint16 b) internal pure returns (uint16) {
assert(b <= a);
return a - b;
}
function add(uint16 a, uint16 b) internal pure returns (uint16) {
uint16 c = a + b;
assert(c >= a);
return c;
}
function pow(uint16 a, uint16 b) internal pure returns (uint16) {
if (a == 0) return 0;
if (b == 0) return 1;
uint16 c = a ** b;
assert(c / (a ** (b - 1)) == a);
return c;
}
}
library SafeMath32 {
function mul(uint32 a, uint32 b) internal pure returns (uint32) {
if (a == 0) {
return 0;
}
uint32 c = a * b;
assert(c / a == b);
return c;
}
function div(uint32 a, uint32 b) internal pure returns (uint32) {
return a / b;
}
function sub(uint32 a, uint32 b) internal pure returns (uint32) {
assert(b <= a);
return a - b;
}
function add(uint32 a, uint32 b) internal pure returns (uint32) {
uint32 c = a + b;
assert(c >= a);
return c;
}
function pow(uint32 a, uint32 b) internal pure returns (uint32) {
if (a == 0) return 0;
if (b == 0) return 1;
uint32 c = a ** b;
assert(c / (a ** (b - 1)) == a);
return c;
}
}
library SafeMath256 {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
function pow(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
if (b == 0) return 1;
uint256 c = a ** b;
assert(c / (a ** (b - 1)) == a);
return c;
}
}
library SafeConvert {
function toUint8(uint256 _value) internal pure returns (uint8) {
assert(_value <= 255);
return uint8(_value);
}
function toUint16(uint256 _value) internal pure returns (uint16) {
assert(_value <= 2**16 - 1);
return uint16(_value);
}
function toUint32(uint256 _value) internal pure returns (uint32) {
assert(_value <= 2**32 - 1);
return uint32(_value);
}
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function _validateAddress(address _addr) internal pure {
require(_addr != address(0), "invalid address");
}
constructor() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner, "not a contract owner");
_;
}
function transferOwnership(address newOwner) public onlyOwner {
_validateAddress(newOwner);
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract Controllable is Ownable {
mapping(address => bool) controllers;
modifier onlyController {
require(_isController(msg.sender), "no controller rights");
_;
}
function _isController(address _controller) internal view returns (bool) {
return controllers[_controller];
}
function _setControllers(address[] _controllers) internal {
for (uint256 i = 0; i < _controllers.length; i++) {
_validateAddress(_controllers[i]);
controllers[_controllers[i]] = true;
}
}
}
contract Upgradable is Controllable {
address[] internalDependencies;
address[] externalDependencies;
function getInternalDependencies() public view returns(address[]) {
return internalDependencies;
}
function getExternalDependencies() public view returns(address[]) {
return externalDependencies;
}
function setInternalDependencies(address[] _newDependencies) public onlyOwner {
for (uint256 i = 0; i < _newDependencies.length; i++) {
_validateAddress(_newDependencies[i]);
}
internalDependencies = _newDependencies;
}
function setExternalDependencies(address[] _newDependencies) public onlyOwner {
externalDependencies = _newDependencies;
_setControllers(_newDependencies);
}
}
contract DragonParams {
function dragonTypesFactors(uint8) external view returns (uint8[5]) {}
function bodyPartsFactors(uint8) external view returns (uint8[5]) {}
function geneTypesFactors(uint8) external view returns (uint8[5]) {}
function experienceToNextLevel(uint8) external view returns (uint8) {}
function dnaPoints(uint8) external view returns (uint16) {}
function geneUpgradeDNAPoints(uint8) external view returns (uint8) {}
function battlePoints() external view returns (uint8) {}
}
contract Name {
using SafeMath256 for uint256;
uint8 constant MIN_NAME_LENGTH = 2;
uint8 constant MAX_NAME_LENGTH = 32;
function _convertName(string _input) internal pure returns(bytes32 _initial, bytes32 _lowercase) {
bytes memory _initialBytes = bytes(_input);
assembly {
_initial := mload(add(_initialBytes, 32))
}
_lowercase = _toLowercase(_input);
}
function _toLowercase(string _input) internal pure returns(bytes32 result) {
bytes memory _temp = bytes(_input);
uint256 _length = _temp.length;
//sorry limited to 32 characters
require (_length <= 32 && _length >= 2, "string must be between 2 and 32 characters");
// make sure it doesnt start with or end with space
require(_temp[0] != 0x20 && _temp[_length.sub(1)] != 0x20, "string cannot start or end with space");
// make sure first two characters are not 0x
if (_temp[0] == 0x30)
{
require(_temp[1] != 0x78, "string cannot start with 0x");
require(_temp[1] != 0x58, "string cannot start with 0X");
}
// create a bool to track if we have a non number character
bool _hasNonNumber;
// convert & check
for (uint256 i = 0; i < _length; i = i.add(1))
{
// if its uppercase A-Z
if (_temp[i] > 0x40 && _temp[i] < 0x5b)
{
// convert to lower case a-z
_temp[i] = byte(uint256(_temp[i]).add(32));
// we have a non number
if (_hasNonNumber == false)
_hasNonNumber = true;
} else {
require
(
// require character is a space
_temp[i] == 0x20 ||
// OR lowercase a-z
(_temp[i] > 0x60 && _temp[i] < 0x7b) ||
// or 0-9
(_temp[i] > 0x2f && _temp[i] < 0x3a),
"string contains invalid characters"
);
// make sure theres not 2x spaces in a row
if (_temp[i] == 0x20)
require(_temp[i.add(1)] != 0x20, "string cannot contain consecutive spaces");
// see if we have a character other than a number
if (_hasNonNumber == false && (_temp[i] < 0x30 || _temp[i] > 0x39))
_hasNonNumber = true;
}
}
require(_hasNonNumber == true, "string cannot be only numbers");
assembly {
result := mload(add(_temp, 32))
}
}
}
contract DragonUtils {
using SafeMath8 for uint8;
using SafeMath256 for uint256;
using SafeConvert for uint256;
function _getActiveGene(uint8[16] _gene) internal pure returns (uint8[3] gene) {
uint8 _index = _getActiveGeneIndex(_gene); // find active gene
for (uint8 i = 0; i < 3; i++) {
gene[i] = _gene[i + (_index * 4)]; // get all data for this gene
}
}
function _getActiveGeneIndex(uint8[16] _gene) internal pure returns (uint8) {
return _gene[3] >= _gene[7] ? 0 : 1;
}
// returns 10 active genes (one for each part of the body) with the next structure:
// each gene is an array of 3 elements:
// 0 - type of dragon
// 1 - gene type
// 2 - gene level
function _getActiveGenes(uint8[16][10] _genome) internal pure returns (uint8[30] genome) {
uint8[3] memory _activeGene;
for (uint8 i = 0; i < 10; i++) {
_activeGene = _getActiveGene(_genome[i]);
genome[i * 3] = _activeGene[0];
genome[i * 3 + 1] = _activeGene[1];
genome[i * 3 + 2] = _activeGene[2];
}
}
function _getIndexAndFactor(uint8 _counter) internal pure returns (uint8 index, uint8 factor) {
if (_counter < 44) index = 0;
else if (_counter < 88) index = 1;
else if (_counter < 132) index = 2;
else index = 3;
factor = _counter.add(1) % 4 == 0 ? 10 : 100;
}
function _parseGenome(uint256[4] _composed) internal pure returns (uint8[16][10] parsed) {
uint8 counter = 160; // 40 genes with 4 values in each one
uint8 _factor;
uint8 _index;
for (uint8 i = 0; i < 10; i++) {
for (uint8 j = 0; j < 16; j++) {
counter = counter.sub(1);
// _index - index of value in genome array where current gene is stored
// _factor - denominator that determines the number of digits
(_index, _factor) = _getIndexAndFactor(counter);
parsed[9 - i][15 - j] = (_composed[_index] % _factor).toUint8();
_composed[_index] /= _factor;
}
}
}
function _composeGenome(uint8[16][10] _parsed) internal pure returns (uint256[4] composed) {
uint8 counter = 0;
uint8 _index;
uint8 _factor;
for (uint8 i = 0; i < 10; i++) {
for (uint8 j = 0; j < 16; j++) {
(_index, _factor) = _getIndexAndFactor(counter);
composed[_index] = composed[_index].mul(_factor);
composed[_index] = composed[_index].add(_parsed[i][j]);
counter = counter.add(1);
}
}
}
}
contract DragonCoreHelper is Upgradable, DragonUtils, Name {
using SafeMath16 for uint16;
using SafeMath32 for uint32;
using SafeMath256 for uint256;
using SafeConvert for uint32;
using SafeConvert for uint256;
DragonParams params;
uint8 constant PERCENT_MULTIPLIER = 100;
uint8 constant MAX_PERCENTAGE = 100;
uint8 constant MAX_GENE_LVL = 99;
uint8 constant MAX_LEVEL = 10;
function _min(uint32 lth, uint32 rth) internal pure returns (uint32) {
return lth > rth ? rth : lth;
}
function _calculateSkillWithBuff(uint32 _skill, uint32 _buff) internal pure returns (uint32) {
return _buff > 0 ? _skill.mul(_buff).div(100) : _skill; // buff is multiplied by 100
}
function _calculateRegenerationSpeed(uint32 _max) internal pure returns (uint32) {
// because HP/mana is multiplied by 100 so we need to have step multiplied by 100 too
return _sqrt(_max.mul(100)).div(2).div(1 minutes); // hp/mana in second
}
function calculateFullRegenerationTime(uint32 _max) external pure returns (uint32) { // in seconds
return _max.div(_calculateRegenerationSpeed(_max));
}
function calculateCurrent(
uint256 _pastTime,
uint32 _max,
uint32 _remaining
) external pure returns (
uint32 current,
uint8 percentage
) {
if (_remaining >= _max) {
return (_max, MAX_PERCENTAGE);
}
uint32 _speed = _calculateRegenerationSpeed(_max); // points per second
uint32 _secondsToFull = _max.sub(_remaining).div(_speed); // seconds to full
uint32 _secondsPassed = _pastTime.toUint32(); // seconds that already passed
if (_secondsPassed >= _secondsToFull.add(1)) {
return (_max, MAX_PERCENTAGE); // return full if passed more or equal to needed
}
current = _min(_max, _remaining.add(_speed.mul(_secondsPassed)));
percentage = _min(MAX_PERCENTAGE, current.mul(PERCENT_MULTIPLIER).div(_max)).toUint8();
}
function calculateHealthAndMana(
uint32 _initStamina,
uint32 _initIntelligence,
uint32 _staminaBuff,
uint32 _intelligenceBuff
) external pure returns (uint32 health, uint32 mana) {
uint32 _stamina = _initStamina;
uint32 _intelligence = _initIntelligence;
_stamina = _calculateSkillWithBuff(_stamina, _staminaBuff);
_intelligence = _calculateSkillWithBuff(_intelligence, _intelligenceBuff);
health = _stamina.mul(5);
mana = _intelligence.mul(5);
}
function _sqrt(uint32 x) internal pure returns (uint32 y) {
uint32 z = x.add(1).div(2);
y = x;
while (z < y) {
y = z;
z = x.div(z).add(z).div(2);
}
}
// _dragonTypes[i] in [0..39] range, sum of all _dragonTypes items = 40 (number of genes)
// _random in [0..39] range
function getSpecialBattleSkillDragonType(uint8[11] _dragonTypes, uint256 _random) external pure returns (uint8 skillDragonType) {
uint256 _currentChance;
for (uint8 i = 0; i < 11; i++) {
_currentChance = _currentChance.add(_dragonTypes[i]);
if (_random < _currentChance) {
skillDragonType = i;
break;
}
}
}
function _getBaseSkillIndex(uint8 _dragonType) internal pure returns (uint8) {
// 2 - stamina
// 0 - attack
// 3 - speed
// 1 - defense
// 4 - intelligence
uint8[5] memory _skills = [2, 0, 3, 1, 4];
return _skills[_dragonType];
}
function calculateSpecialBattleSkill(
uint8 _dragonType,
uint32[5] _skills
) external pure returns (
uint32 cost,
uint8 factor,
uint8 chance
) {
uint32 _baseSkill = _skills[_getBaseSkillIndex(_dragonType)];
uint32 _intelligence = _skills[4];
cost = _baseSkill.mul(3);
factor = _sqrt(_baseSkill.div(3)).add(10).toUint8(); // factor is increased by 10
// skill is multiplied by 100 so we divide the result by sqrt(100) = 10
chance = _sqrt(_intelligence).div(10).add(10).toUint8();
}
function _getSkillIndexBySpecialPeacefulSkillClass(
uint8 _class
) internal pure returns (uint8) {
// 0 - attack
// 1 - defense
// 2 - stamina
// 3 - speed
// 4 - intelligence
uint8[8] memory _buffsIndexes = [0, 0, 1, 2, 3, 4, 2, 4]; // 0 item - no such class
return _buffsIndexes[_class];
}
function calculateSpecialPeacefulSkill(
uint8 _class,
uint32[5] _skills,
uint32[5] _buffs
) external pure returns (uint32 cost, uint32 effect) {
uint32 _index = _getSkillIndexBySpecialPeacefulSkillClass(_class);
uint32 _skill = _calculateSkillWithBuff(_skills[_index], _buffs[_index]);
if (_class == 6 || _class == 7) { // healing or mana recharge
effect = _skill.mul(2);
} else {
// sqrt(skill / 30) + 1
effect = _sqrt(_skill.mul(10).div(3)).add(100); // effect is increased by 100 as skills
}
cost = _skill.mul(3);
}
function _getGeneVarietyFactor(uint8 _type) internal pure returns (uint32 value) {
// multiplied by 10
if (_type == 0) value = 5;
else if (_type < 5) value = 12;
else if (_type < 8) value = 16;
else value = 28;
}
function calculateCoolness(uint256[4] _composedGenome) external pure returns (uint32 coolness) {
uint8[16][10] memory _genome = _parseGenome(_composedGenome);
uint32 _geneVarietyFactor; // multiplied by 10
uint8 _strengthCoefficient; // multiplied by 10
uint8 _geneLevel;
for (uint8 i = 0; i < 10; i++) {
for (uint8 j = 0; j < 4; j++) {
_geneVarietyFactor = _getGeneVarietyFactor(_genome[i][(j * 4) + 1]);
_strengthCoefficient = (_genome[i][(j * 4) + 3] == 0) ? 7 : 10; // recessive or dominant
_geneLevel = _genome[i][(j * 4) + 2];
coolness = coolness.add(_geneVarietyFactor.mul(_geneLevel).mul(_strengthCoefficient));
}
}
}
function calculateSkills(
uint256[4] _composed
) external view returns (
uint32, uint32, uint32, uint32, uint32
) {
uint8[30] memory _activeGenes = _getActiveGenes(_parseGenome(_composed));
uint8[5] memory _dragonTypeFactors;
uint8[5] memory _bodyPartFactors;
uint8[5] memory _geneTypeFactors;
uint8 _level;
uint32[5] memory _skills;
for (uint8 i = 0; i < 10; i++) {
_bodyPartFactors = params.bodyPartsFactors(i);
_dragonTypeFactors = params.dragonTypesFactors(_activeGenes[i * 3]);
_geneTypeFactors = params.geneTypesFactors(_activeGenes[i * 3 + 1]);
_level = _activeGenes[i * 3 + 2];
for (uint8 j = 0; j < 5; j++) {
_skills[j] = _skills[j].add(uint32(_dragonTypeFactors[j]).mul(_bodyPartFactors[j]).mul(_geneTypeFactors[j]).mul(_level));
}
}
return (_skills[0], _skills[1], _skills[2], _skills[3], _skills[4]);
}
function calculateExperience(
uint8 _level,
uint256 _experience,
uint16 _dnaPoints,
uint256 _factor
) external view returns (
uint8 level,
uint256 experience,
uint16 dnaPoints
) {
level = _level;
experience = _experience;
dnaPoints = _dnaPoints;
uint8 _expToNextLvl;
// _factor is multiplied by 10
experience = experience.add(uint256(params.battlePoints()).mul(_factor).div(10));
_expToNextLvl = params.experienceToNextLevel(level);
while (experience >= _expToNextLvl && level < MAX_LEVEL) {
experience = experience.sub(_expToNextLvl);
level = level.add(1);
dnaPoints = dnaPoints.add(params.dnaPoints(level));
if (level < MAX_LEVEL) {
_expToNextLvl = params.experienceToNextLevel(level);
}
}
}
function checkAndConvertName(string _input) external pure returns(bytes32, bytes32) {
return _convertName(_input);
}
function _checkIfEnoughDNAPoints(bool _isEnough) internal pure {
require(_isEnough, "not enough DNA points for upgrade");
}
function upgradeGenes(
uint256[4] _composedGenome,
uint16[10] _dnaPoints,
uint16 _availableDNAPoints
) external view returns (
uint256[4],
uint16
) {
uint16 _sum;
uint8 _i;
for (_i = 0; _i < 10; _i++) {
_checkIfEnoughDNAPoints(_dnaPoints[_i] <= _availableDNAPoints);
_sum = _sum.add(_dnaPoints[_i]);
}
_checkIfEnoughDNAPoints(_sum <= _availableDNAPoints);
_sum = 0;
uint8[16][10] memory _genome = _parseGenome(_composedGenome);
uint8 _geneLevelIndex;
uint8 _geneLevel;
uint16 _geneUpgradeDNAPoints;
uint8 _levelsToUpgrade;
uint16 _specificDNAPoints;
for (_i = 0; _i < 10; _i++) { // 10 active genes
_specificDNAPoints = _dnaPoints[_i]; // points to upgrade current gene
if (_specificDNAPoints > 0) {
_geneLevelIndex = _getActiveGeneIndex(_genome[_i]).mul(4).add(2); // index of main gene level in genome
_geneLevel = _genome[_i][_geneLevelIndex]; // current level of gene
if (_geneLevel < MAX_GENE_LVL) {
// amount of points to upgrade to next level
_geneUpgradeDNAPoints = params.geneUpgradeDNAPoints(_geneLevel);
// while enough points and gene level is lower than max gene level
while (_specificDNAPoints >= _geneUpgradeDNAPoints && _geneLevel.add(_levelsToUpgrade) < MAX_GENE_LVL) {
_levelsToUpgrade = _levelsToUpgrade.add(1);
_specificDNAPoints = _specificDNAPoints.sub(_geneUpgradeDNAPoints);
_sum = _sum.add(_geneUpgradeDNAPoints); // the sum of used points
if (_geneLevel.add(_levelsToUpgrade) < MAX_GENE_LVL) {
_geneUpgradeDNAPoints = params.geneUpgradeDNAPoints(_geneLevel.add(_levelsToUpgrade));
}
}
_genome[_i][_geneLevelIndex] = _geneLevel.add(_levelsToUpgrade); // add levels to current gene
_levelsToUpgrade = 0;
}
}
}
return (_composeGenome(_genome), _sum);
}
function getActiveGenes(uint256[4] _composed) external pure returns (uint8[30]) {
uint8[16][10] memory _genome = _parseGenome(_composed);
return _getActiveGenes(_genome);
}
function setInternalDependencies(address[] _newDependencies) public onlyOwner {
super.setInternalDependencies(_newDependencies);
params = DragonParams(_newDependencies[0]);
}
}
|
40 genes with 4 values in each one
|
uint8 counter = 160;
| 2,553,443 |
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./partial_match/1/0x85F66f5Ee2435bDCbE12c115bFd592462ECbDb5c/sources/MakerDaoGateway.sol
|
don't forget to approve DAI before repaying pass -1 to daiAmount to repay all outstanding debt repay all outstanding debt
|
function repayDai(bytes32 cdpId, uint daiAmount, bool payFeeInDai) whenNotPaused isCdpOwner(cdpId) public {
if (daiAmount > 0) {
uint _daiAmount = daiAmount;
if (_daiAmount == uint(- 1)) {
_daiAmount = saiTub.tab(cdpId);
}
_ensureApproval(dai, address(saiTub));
_ensureApproval(mkr, address(saiTub));
uint govFeeAmount = _calcGovernanceFee(cdpId, _daiAmount);
_handleGovFee(govFeeAmount, payFeeInDai);
require(dai.transferFrom(msg.sender, address(this), _daiAmount));
saiTub.wipe(cdpId, _daiAmount);
emit DaiRepaid(msg.sender, cdpId, _daiAmount);
}
}
| 3,900,974 |
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./partial_match/1/0xe35aC90D3BD1009977c989F3eb0c0d3E9F171817/sources/contracts/extensions/token/erc20/ERC20TokenExtension.sol
|
* @dev Returns the name of the token./
|
function name() external view virtual returns (string memory) {
return bytes32ToString(bytes32(dao.getConfiguration(TokenName)));
}
| 15,956,369 |
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//Address: 0xfcb675830e4c10438ce4a4091be45bf3b2c3d06f
//Contract name: MyDice
//Balance: 4.908517703540708142 Ether
//Verification Date: 10/10/2017
//Transacion Count: 53
// CODE STARTS HERE
pragma solidity ^0.4.2;
// Etheroll Functions
contract DSSafeAddSub {
function safeToAdd(uint a, uint b) internal returns (bool) {
return (a + b >= a);
}
function safeAdd(uint a, uint b) internal returns (uint) {
require(safeToAdd(a, b));
return a + b;
}
function safeToSubtract(uint a, uint b) internal returns (bool) {
return (b <= a);
}
function safeSub(uint a, uint b) internal returns (uint) {
require(safeToSubtract(a, b));
return a - b;
}
}
contract MyDice is DSSafeAddSub {
/*
* checks player profit and number is within range
*/
modifier betIsValid(uint _betSize, uint _playerNumber) {
require(((((_betSize * (10000-(safeSub(_playerNumber,1)))) / (safeSub(_playerNumber,1))+_betSize))*houseEdge/houseEdgeDivisor)-_betSize <= maxProfit);
require(_playerNumber < maxNumber);
require(_betSize >= minBet);
_;
}
/*
* checks game is currently active
*/
modifier gameIsActive {
require(gamePaused == false);
_;
}
/*
* checks payouts are currently active
*/
modifier payoutsAreActive {
require(payoutsPaused == false);
_;
}
/*
* checks only owner address is calling
*/
modifier onlyOwner {
require(msg.sender == owner);
_;
}
/*
* game vars
*/
uint constant public maxBetDivisor = 1000000;
uint constant public houseEdgeDivisor = 1000;
bool public gamePaused;
address public owner;
bool public payoutsPaused;
uint public contractBalance;
uint public houseEdge;
uint public maxProfit;
uint public maxProfitAsPercentOfHouse;
uint public minBet;
uint public totalBets;
uint public totalUserProfit;
uint private randomNumber;
uint private maxNumber = 10000;
uint private underNumber = 5000;
struct Bet
{
address bettorAddress;
uint betSize;
uint betID;
}
uint public numElements = 0;
Bet[] pendingBets;
mapping (address => uint) playerPendingWithdrawals;
/*
* events
*/
event LogBetStart(uint indexed betID);
/* Status: 0=lose, 1=win, 2=win + failed send,*/
event LogResult(uint indexed BetID, address indexed PlayerAddress, uint indexed PlayerNumber, uint DiceResult, uint Value, int Status,uint BetValue,uint targetNumber);
/* log owner transfers */
event LogOwnerTransfer(address indexed SentToAddress, uint indexed AmountTransferred);
/*
* init
*/
function MyDice() {
owner = msg.sender;
ownerSetHouseEdge(935);
ownerSetMaxProfitAsPercentOfHouse(20000);
ownerSetMinBet(20000000000000000);
}
/*The generation of random numbers is generated by the banker's seed + current block of information
*1,The banker's seed is untrustworthy, but the current block information banker can not manipulate, in order to ensure that the banker can not manipulate the final random number results
*2,Block information because the whole network is open, there will be malicious players to use this point to attack the banker, so with the banker issued the seeds to ensure that the banker will not be attacked by malicious players
*/
function GetRandomNumber(uint32 seed) internal
returns(uint randomNum)
{
randomNumber = randomNumber % block.timestamp + uint256(block.blockhash(block.number - 1));
randomNumber = randomNumber + block.timestamp * block.difficulty * block.number + 1;
randomNumber = uint(sha3(randomNumber,seed));
return (maxNumber - randomNumber % maxNumber);
}
function StartRollDice(uint32 seed) public
gameIsActive
onlyOwner
{
if(numElements == 0)
return;
uint i = numElements - 1;
uint randResult = GetRandomNumber(seed);
/*
* pay winner
* update contract balance to calculate new max bet
* send reward
* if send of reward fails save value to playerPendingWithdrawals
*/
if(randResult < underNumber){
uint playerProfit = ((((pendingBets[i].betSize * (maxNumber-(safeSub(underNumber,1)))) / (safeSub(underNumber,1))+pendingBets[i].betSize))*houseEdge/houseEdgeDivisor)-pendingBets[i].betSize;
/* safely reduce contract balance by player profit */
contractBalance = safeSub(contractBalance, playerProfit);
/* safely calculate total payout as player profit plus original wager */
uint reward = safeAdd(playerProfit, pendingBets[i].betSize);
totalUserProfit = totalUserProfit + playerProfit; // total profits
LogResult(pendingBets[i].betID, pendingBets[i].bettorAddress, underNumber, randResult, reward, 1, pendingBets[i].betSize,underNumber);
/* update maximum profit */
setMaxProfit();
/*
* send win - external call to an untrusted contract
* if send fails map reward value to playerPendingWithdrawals[address]
* for withdrawal later via playerWithdrawPendingTransactions
*/
if(!pendingBets[i].bettorAddress.send(reward)){
LogResult(pendingBets[i].betID, pendingBets[i].bettorAddress, underNumber, randResult, reward, 2, pendingBets[i].betSize,underNumber);
/* if send failed let player withdraw via playerWithdrawPendingTransactions */
playerPendingWithdrawals[pendingBets[i].bettorAddress] = safeAdd(playerPendingWithdrawals[pendingBets[i].bettorAddress], reward);
}
numElements -= 1;
return;
}
/*
* no win
* send 1 wei to a losing bet
* update contract balance to calculate new max bet
*/
if(randResult >= underNumber){
LogResult(pendingBets[i].betID, pendingBets[i].bettorAddress, underNumber, randResult, pendingBets[i].betSize, 0, pendingBets[i].betSize,underNumber);
/*
* safe adjust contractBalance
* setMaxProfit
* send 1 wei to losing bet
*/
contractBalance = safeAdd(contractBalance, pendingBets[i].betSize-1);
/* update maximum profit */
setMaxProfit();
/*
* send 1 wei - external call to an untrusted contract
*/
if(!pendingBets[i].bettorAddress.send(1)){
/* if send failed let player withdraw via playerWithdrawPendingTransactions */
playerPendingWithdrawals[pendingBets[i].bettorAddress] = safeAdd(playerPendingWithdrawals[pendingBets[i].bettorAddress], 1);
}
numElements -= 1;
return;
}
}
/*
* public function
* player submit bet
* only if game is active & bet is valid can query and set player vars
*/
function playerRollDice() public
payable
gameIsActive
betIsValid(msg.value, underNumber)
{
totalBets++;
Bet memory b = Bet(msg.sender,msg.value,totalBets);
if(numElements == pendingBets.length) {
pendingBets.length += 1;
}
pendingBets[numElements++] = b;
/*
Notice that someone has betting that the banker receives LogBetStart and must start StartRollDice immediately to ensure that the banker (if the banker is a miner) can not manipulate the current block information in order to achieve manipulation of the random number results. You can view the time difference between the betting transaction and the banker StartRollDice by etherscan.io (the difference in the number of blocks)
*/
LogBetStart(totalBets);
}
/*
* public function
* in case of a failed refund or win send
*/
function playerWithdrawPendingTransactions() public
payoutsAreActive
returns (bool)
{
uint withdrawAmount = playerPendingWithdrawals[msg.sender];
playerPendingWithdrawals[msg.sender] = 0;
/* external call to untrusted contract */
if (msg.sender.call.value(withdrawAmount)()) {
return true;
} else {
/* if send failed revert playerPendingWithdrawals[msg.sender] = 0; */
/* player can try to withdraw again later */
playerPendingWithdrawals[msg.sender] = withdrawAmount;
return false;
}
}
/* check for pending withdrawals */
function playerGetPendingTxByAddress(address addressToCheck) public constant returns (uint) {
return playerPendingWithdrawals[addressToCheck];
}
/*
* internal function
* sets max profit
*/
function setMaxProfit() internal {
maxProfit = (contractBalance*maxProfitAsPercentOfHouse)/maxBetDivisor;
}
/*
* owner address only functions
*/
function ()
payable
{
playerRollDice();
}
function ownerAddBankroll()
payable
onlyOwner
{
/* safely update contract balance */
contractBalance = safeAdd(contractBalance, msg.value);
/* update the maximum profit */
setMaxProfit();
}
function getcontractBalance() public
onlyOwner
returns(uint)
{
return contractBalance;
}
/* only owner address can set houseEdge */
function ownerSetHouseEdge(uint newHouseEdge) public
onlyOwner
{
houseEdge = newHouseEdge;
}
function getHouseEdge() public
onlyOwner
returns(uint)
{
return houseEdge;
}
/* only owner address can set maxProfitAsPercentOfHouse */
function ownerSetMaxProfitAsPercentOfHouse(uint newMaxProfitAsPercent) public
onlyOwner
{
/* restrict to maximum profit of 5% of total house balance*/
require(newMaxProfitAsPercent <= 50000);
maxProfitAsPercentOfHouse = newMaxProfitAsPercent;
setMaxProfit();
}
function getMaxProfitAsPercentOfHouse() public
onlyOwner
returns(uint)
{
return maxProfitAsPercentOfHouse;
}
/* only owner address can set minBet */
function ownerSetMinBet(uint newMinimumBet) public
onlyOwner
{
minBet = newMinimumBet;
}
function getMinBet() public
onlyOwner
returns(uint)
{
return minBet;
}
/* only owner address can transfer ether */
function ownerTransferEther(address sendTo, uint amount) public
onlyOwner
{
/* safely update contract balance when sending out funds*/
contractBalance = safeSub(contractBalance, amount);
/* update max profit */
setMaxProfit();
require(sendTo.send(amount));
LogOwnerTransfer(sendTo, amount);
}
/* only owner address can set emergency pause #1 */
function ownerPauseGame(bool newStatus) public
onlyOwner
{
gamePaused = newStatus;
}
/* only owner address can set emergency pause #2 */
function ownerPausePayouts(bool newPayoutStatus) public
onlyOwner
{
payoutsPaused = newPayoutStatus;
}
/* only owner address can set owner address */
function ownerChangeOwner(address newOwner) public
onlyOwner
{
owner = newOwner;
}
/* only owner address can suicide - emergency */
function ownerkill() public
onlyOwner
{
suicide(owner);
}
}
|
Status: 0=lose, 1=win, 2=win + failed send,*/
|
event LogResult(uint indexed BetID, address indexed PlayerAddress, uint indexed PlayerNumber, uint DiceResult, uint Value, int Status,uint BetValue,uint targetNumber);
| 6,486,239 |
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/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: GPL-3.0-only
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract FeeSplit is Ownable {
using SafeMath for uint256;
address public tokenAddress;
address public burnAddress;
constructor(address _tokenAddress, address _burnAddress) public {
tokenAddress = _tokenAddress;
burnAddress = _burnAddress;
}
uint256 public totalCollectedSinceStart;
uint256 internal _balance;
uint256 internal burnAmount;
function withdrawFeesWithBurn() public {
IERC20 token = IERC20(tokenAddress);
_balance = token.balanceOf(address(this));
burnAmount = _balance.mul(500).div(1000);
require(token.balanceOf(burnAddress) < 9000e18, "Burn cap reached");
require(token.balanceOf(burnAddress).add(burnAmount) <= 9000e18, "Additional burn will exceed cap");
token.transfer(burnAddress, burnAmount);
token.transfer(address(0x856A4619fA7519D53E6F3a94260F55de62B83EEb), _balance.mul(225).div(1000)); // @1AndOnlyPika (45% devfee)
token.transfer(address(0x68b59573Da735e4e75F8A687908b6f3bEd7CB6fa), _balance.mul(150).div(1000)); // Iron (30% devfee)
token.transfer(address(0xE35E342cd9F2021518D2cd53068e183FfA69eeb2), _balance.mul(125).div(1000)); // Jared Grey (25% devee)
totalCollectedSinceStart = totalCollectedSinceStart.add(_balance);
}
function withdrawFees() public {
IERC20 token = IERC20(tokenAddress);
require(token.balanceOf(burnAddress) == 9000e18, "Cannot bypass burn unless cap reached");
_balance = token.balanceOf(address(this));
token.transfer(address(0x856A4619fA7519D53E6F3a94260F55de62B83EEb), _balance.mul(45).div(100)); // @1AndOnlyPika (45% devfee)
token.transfer(address(0x68b59573Da735e4e75F8A687908b6f3bEd7CB6fa), _balance.mul(30).div(100)); // Iron (30% devfee)
token.transfer(address(0xE35E342cd9F2021518D2cd53068e183FfA69eeb2), _balance.mul(25).div(100)); // Jared Grey (25% devee)
totalCollectedSinceStart = totalCollectedSinceStart.add(_balance);
}
uint256 internal toForceBurn = 9000e18;
function forceBurnToFillGap() public onlyOwner {
IERC20 token = IERC20(tokenAddress);
toForceBurn = toForceBurn.sub(token.balanceOf(burnAddress));
token.transfer(burnAddress, toForceBurn);
totalCollectedSinceStart = totalCollectedSinceStart.add(toForceBurn);
}
function withdrawExtraTokens(address _token) public onlyOwner {
require(_token != tokenAddress, "Cannot withdraw managed token");
IERC20 extratoken = IERC20(_token);
extratoken.transfer(address(msg.sender), extratoken.balanceOf(address(this)));
}
}
|
@1AndOnlyPika (45% devfee)
|
token.transfer(address(0x856A4619fA7519D53E6F3a94260F55de62B83EEb), _balance.mul(225).div(1000));
| 6,248,298 |
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pragma solidity ^0.5.0;
// Import the library 'Roles'
import "./Roles.sol";
// Define a contract 'DairyfactoryRole' to manage this role - add, remove, check
contract DairyfactoryRole {
using Roles for Roles.Role;
// Define 2 events, one for Adding, and other for Removing
event DairyfactoryAdded(address indexed account);
event DairyfactoryRemoved(address indexed account);
// Define a struct 'dairyfactories' by inheriting from 'Roles' library, struct Role
Roles.Role private dairyfactorys;
// In the constructor make the address that deploys this contract the 1st farmer
constructor() public {
_addDairyfactory(msg.sender);
}
// Define a modifier that checks to see if msg.sender has the appropriate role
modifier onlyDairyfactory() {
require(isDairyfactory(msg.sender),"ERROR Message: The address doesn´t match with any dairyfactory.");
_;
}
// Define a function 'isDairyfactory' to check this role
function isDairyfactory(address account) public view returns (bool) {
return dairyfactorys.has(account);
}
// Define a function 'addDairyfactory' that adds this role
function addDairyfactory(address account) public onlyDairyfactory() {
_addDairyfactory(account);
}
// Define a function 'renounceDairyfactory' to renounce this role
function renounceDairyfactory() public {
_removeDairyfactory(msg.sender);
}
// Define an internal function '_addDairyfactory' to add this role, called by 'addDairyfactory'
function _addDairyfactory(address account) internal {
dairyfactorys.add(account);
emit DairyfactoryAdded(account);
}
// Define an internal function '_removeDairyfactory' to remove this role, called by 'removeDairyfactory'
function _removeDairyfactory(address account) internal {
dairyfactorys.remove(account);
emit DairyfactoryRemoved(account);
}
}
|
Define a modifier that checks to see if msg.sender has the appropriate role
|
modifier onlyDairyfactory() {
require(isDairyfactory(msg.sender),"ERROR Message: The address doesn´t match with any dairyfactory.");
_;
}
| 1,041,876 |
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./full_match/4/0x4E643d71a7e55f8CFf24ec3B55E61ACC0866cf16/sources/shibanova/NovaToken.sol
|
@notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterShiba).
|
function mint(address _to, uint256 _amount) external virtual override onlyOwnerOrSNova {
_mint(_to, _amount);
}
| 12,475,430 |
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./full_match/5/0x703A1d8603068bD9c09879E20a4FCF2BaEef1758/sources/project_/contracts/lib/SortitionSumTreeFactory.sol
|
* @dev Update all the parents of a node. @param _key The key of the tree to update. @param _treeIndex The index of the node to start from. @param _plusOrMinus Wether to add (true) or substract (false). @param _value The value to add or substract. `O(log_k(n))` where `k` is the maximum number of childs per node in the tree, and `n` is the maximum number of nodes ever appended./
|
function updateParents(SortitionSumTrees storage self, bytes32 _key, uint _treeIndex, bool _plusOrMinus, uint _value) private {
SortitionSumTree storage tree = self.sortitionSumTrees[_key];
uint parentIndex = _treeIndex;
while (parentIndex != 0) {
parentIndex = (parentIndex - 1) / tree.K;
tree.nodes[parentIndex] = _plusOrMinus ? tree.nodes[parentIndex] + _value : tree.nodes[parentIndex] - _value;
}
}
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// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
}
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
}
interface IERC20 {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
}
/*
* @dev Get the current price of ETH/USD in a buyTokens function of a deployed solidity smart contract
*/
interface AggregatorInterface {
function latestAnswer() external view returns (int256);
function latestTimestamp() external view returns (uint256);
function latestRound() external view returns (uint256);
function getAnswer(uint256 roundId) external view returns (int256);
function getTimestamp(uint256 roundId) external view returns (uint256);
event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt);
event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt);
}
/*
* @title 1CC Global Financial System, build in Ethereum Network
* @dev A financial system built on smart contract technology. Open to all, transparent to all.
* The worlds first decentralized, community support fund
*/
contract OneCoinGlobal is Ownable {
IERC20 public investToken;
AggregatorInterface internal ethPriceFeed;
using SafeMath for uint256;
struct PlayerDeposit {
uint256 id;
uint256 amount;
uint256 total_withdraw;
uint256 time;
uint256 period;
uint256 expire;
uint8 status;
uint8 is_crowd;
}
struct Player {
address referral;
uint8 is_crowd;
uint256 level_id;
uint256 dividends;
uint256 eth_dividends;
uint256 referral_bonus;
uint256 match_bonus;
uint256 holder_full_bonus;
uint256 holder_single_bonus;
uint256 total_invested;
uint256 total_redeem;
uint256 total_withdrawn;
uint256 last_payout;
PlayerDeposit[] deposits;
address[] referrals;
}
struct PlayerTotal {
uint256 total_match_invested;
uint256 total_dividends;
uint256 total_referral_bonus;
uint256 total_match_bonus;
uint256 total_holder_full_bonus;
uint256 total_holder_single_bonus;
uint256 total_eth_dividends;
}
/* Deposit smart contract address */
address public invest_token_address = 0x94E042C6fD31bb391FC27c0091785728D9bCD149;
/* Chainlink ETH/USD proxy address */
address public ethusd_proxy_address = 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419;
uint256 public invest_token_decimal = 4;
uint256 public invest_eth_decimal = 8;
uint256 public total_investors;
uint256 public total_invested;
uint256 public total_withdrawn;
uint256 public total_redeem;
uint256 public total_referral_bonus;
uint256 public total_match_bonus;
uint256 public total_dividends;
uint256 public total_eth_dividends;
uint256 public total_holder_full_bonus;
uint256 public total_holder_single_bonus;
uint256 public total_platform_bonus;
/* Current corwded shareholder number */
uint256 public total_crowded_num;
/* Total shareholder join limit number */
uint256 constant public SHAREHOLDER_LIMIT_NUM = 30;
/* Shareholder bonus rate */
uint256 constant public shareholder_full_bonus_rate = 5;
uint256 constant public shareholder_single_bonus_rate = 3;
/* Referral bonuses data define*/
uint8[] public referral_bonuses = [10,8,6,4,2,1,1,1,1,1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1];
/* Invest period and profit parameter definition */
uint256[] public invest_period_months = [1, 2, 3, 6, 12, 18]; //period months
uint256[] public invest_period_month_rates = [800, 900, 1000, 1100, 1200, 1200]; //Ten thousand of month' rate
/* yield reduce project section config, item1: total yield, item2: reduce rate */
uint256[] public yield_reduce_section1 = [2000000, 30];
uint256[] public yield_reduce_section2 = [5000000, 30];
uint256[] public yield_reduce_section3 = [9000000, 30];
/* Team level data definition */
uint256[] public team_level_ids = [1,2,3,4,5,6];
uint256[] public team_level_amounts = [10000,30000,50000,100000,200000,500000];
uint256[] public team_level_bonuses = [2,4,6,8,10,11];
/* invest coin usd price */
uint256 public invest_coin_usd_price = 1;
/* invest reward eth rate ‰ */
uint256 public invest_reward_eth_month_rate = 25;
/* ETH min withdraw amount: 0.1 ETH */
uint256 public eth_min_withdraw_num = 1 * (10 ** 17);
/* user invest min amount */
uint256 constant public INVEST_MIN_AMOUNT = 100;
/* user invest max amount */
uint256 constant public INVEST_MAX_AMOUNT = 10000;
/* user crowd limit amount */
uint256 constant public CROWD_LIMIT_AMOUNT = 15000;
/* user crowd period(month) */
uint256 constant public crowd_period_month = 18;
/* Platform bonus address */
address public platform_bonus_address = 0xb42a4bed3C53a7aC9551670dF0AF36956c7b87F1;
/* Platform bonus rate percent(%) */
uint256 constant public platform_bonus_rate = 5;
/* Mapping data list define */
mapping(address => Player) public players;
mapping(address => PlayerTotal) public playerTotals;
mapping(uint256 => address) public addrmap;
address[] public shareholders;
event Deposit(address indexed addr, uint256 amount, uint256 month);
event Withdraw(address indexed addr, uint256 amount);
event ReferralPayout(address indexed addr, uint256 amount, uint8 level);
event Crowd(address indexed addr, uint256 amount);
event DepositRedeem(uint256 invest_id);
constructor() public {
/* Create invest token instace */
investToken = IERC20(invest_token_address);
/* Create eth price feed in chainlink */
ethPriceFeed = AggregatorInterface(ethusd_proxy_address);
}
/* Function to receive Ether. msg.data must be empty */
receive() external payable {}
/* Fallback function is called when msg.data is not empty */
fallback() external payable {}
function getBalance() public view returns (uint) {
return address(this).balance;
}
/*
* @dev user do deposit action,grant the referrs bonus,grant the shareholder bonus,grant the match bonus
*/
function deposit(address _referral, uint256 _amount, uint256 _month)
external
payable
{
require(_amount >= INVEST_MIN_AMOUNT, "Minimal deposit: 100 1CC");
require(_amount <= INVEST_MAX_AMOUNT, "Maxinum deposit: 10000 1CC");
//require(_amount % 100 == 0, "Invest amount must be multiple of 100");
Player storage player = players[msg.sender];
require(player.deposits.length < 2000, "Max 2000 deposits per address");
/* format token amount */
uint256 token_decimals = 10 ** invest_token_decimal;
uint256 token_amount = _amount * token_decimals;
/* Transfer user address token to contract address*/
require(investToken.transferFrom(msg.sender, address(this), token_amount), "transferFrom failed");
_setReferral(msg.sender, _referral);
/* update total investor count */
if(player.deposits.length == 0){
total_investors += 1;
addrmap[total_investors] = msg.sender;
}
/* get the period total time (total secones) */
uint256 period_time = _month * 30 * 86400;
uint256 _id = player.deposits.length + 1;
player.deposits.push(PlayerDeposit({
id: _id,
amount: _amount,
total_withdraw: 0,
time: uint256(block.timestamp),
period: _month,
expire:uint256(block.timestamp).add(period_time),
status: 0,
is_crowd: 0
}));
player.total_invested += _amount;
total_invested += _amount;
/* update user referral and match invested amount*/
_updateReferralMatchInvestedAmount(msg.sender, _amount, 1);
emit Deposit(msg.sender, _amount, _month);
}
/*
* @dev user do crowd action, to join shareholder
*/
function crowd(address _referral, uint256 _amount)
payable
external
{
require(_amount == CROWD_LIMIT_AMOUNT, "Crowd limit: 15000 1CC");
require(total_crowded_num <= SHAREHOLDER_LIMIT_NUM, "Maximum shareholders: 30");
Player storage player = players[msg.sender];
require(player.is_crowd == 0, "Already a shareholder");
/* format token amount */
uint256 token_amount = _getTokenAmount(_amount,invest_token_decimal);
/* Transfer user address token to contract address*/
require(investToken.transferFrom(msg.sender, address(this), token_amount), "transferFrom failed");
_setReferral(msg.sender, _referral);
/* get the period total time (total secones) */
uint256 _month = crowd_period_month;
uint256 period_time = _month.mul(30).mul(86400);
/* update total investor count */
if(player.deposits.length == 0){
total_investors += 1;
addrmap[total_investors] = msg.sender;
}
uint256 _id = player.deposits.length + 1;
player.deposits.push(PlayerDeposit({
id: _id,
amount: _amount,
total_withdraw: 0,
time: uint256(block.timestamp),
period: _month,
expire: uint256(block.timestamp).add(period_time),
status: 0,
is_crowd: 1
}));
/* set the player of shareholders roles */
player.is_crowd = 1;
total_crowded_num += 1;
/* push user to shareholder list*/
shareholders.push(msg.sender);
player.total_invested += _amount;
total_invested += _amount;
/* update user referral and match invested amount*/
_updateReferralMatchInvestedAmount(msg.sender, _amount, 1);
emit Crowd(msg.sender, _amount);
}
/*
* @dev user do withdraw action, tranfer the total profit to user account, grant rereferral bonus, grant match bonus, grant shareholder bonus
*/
function withdraw()
payable
external
{
/* update user dividend data */
_payout(msg.sender);
Player storage player = players[msg.sender];
uint256 _amount = player.dividends + player.referral_bonus + player.match_bonus + player.holder_full_bonus + player.holder_single_bonus;
uint256 _eth_amount = player.eth_dividends;
require(_amount > 0, "Insufficient balance");
/* format deposit token amount */
uint256 token_amount = _amount;
/* process token transfer action */
require(investToken.approve(address(this), token_amount), "approve failed");
require(investToken.transferFrom(address(this), msg.sender, token_amount), "transferFrom failed");
/* eth dividends must greater than min withdraw num */
if(_eth_amount >= eth_min_withdraw_num && address(this).balance >= _eth_amount){
msg.sender.transfer(_eth_amount);
playerTotals[msg.sender].total_eth_dividends += player.eth_dividends;
total_eth_dividends += player.eth_dividends;
player.eth_dividends = 0;
}
/* Grant referral bonus */
_referralPayout(msg.sender, token_amount);
/* Grant shareholder full node bonus */
_shareHoldersFullNodePayout(token_amount);
/* Grant shareholder single node bonus */
_shareHoldersSingleNodePayout(msg.sender, token_amount);
/* Grant team match bonus*/
_matchPayout(msg.sender, token_amount);
/* Update user total payout data */
_updatePlayerTotalPayout(msg.sender, token_amount);
emit Withdraw(msg.sender, token_amount);
}
/*
* @dev user do deposit redeem action,transfer the expire deposit's amount to user account
*/
function depositRedeem(uint256 _invest_id)
payable
external
{
Player storage player = players[msg.sender];
require(player.deposits.length >= _invest_id && _invest_id > 0, "Valid deposit id");
uint256 _index = _invest_id - 1;
require(player.deposits[_index].expire < block.timestamp, "Invest not expired");
require(player.deposits[_index].status == 0, "Invest is redeemed");
/* formt deposit token amount */
uint256 _amount = player.deposits[_index].amount;
uint256 token_amount = _getTokenAmount(_amount,invest_token_decimal);
/* process token transfer action*/
//require(investToken.approve(address(this), 0), "approve failed");
require(investToken.approve(address(this), token_amount), "approve failed");
require(investToken.transferFrom(address(this), msg.sender, token_amount), "transferFrom failed");
/* update deposit status in redeem */
player.deposits[_index].status = 1;
/* user quit crowd, cancel the shareholders role */
if(player.deposits[_index].is_crowd == 1){
player.is_crowd = 0;
total_crowded_num -= 1;
/* remove user to shareholder list*/
_removeShareholders(msg.sender);
}
/* update user token balance*/
player.total_invested -= _amount;
/* update total invested/redeem amount */
total_invested -= _amount;
total_redeem += _amount;
/* update user referral and match invested amount*/
_updateReferralMatchInvestedAmount(msg.sender, _amount, -1);
emit DepositRedeem(_invest_id);
}
/*
* @dev Update Referral Match invest amount, total investor number, map investor address index
*/
function _updateReferralMatchInvestedAmount(address _addr,uint256 _amount,int8 op)
private
{
if(op > 0){
playerTotals[_addr].total_match_invested += _amount;
address ref = players[_addr].referral;
while(true){
if(ref == address(0)) break;
playerTotals[ref].total_match_invested += _amount;
ref = players[ref].referral;
}
}else{
playerTotals[_addr].total_match_invested -= _amount;
address ref = players[_addr].referral;
while(true){
if(ref == address(0)) break;
playerTotals[ref].total_match_invested -= _amount;
ref = players[ref].referral;
}
}
}
/*
* @dev Update user total payout data
*/
function _updatePlayerTotalPayout(address _addr,uint256 token_amount)
private
{
Player storage player = players[_addr];
PlayerTotal storage playerTotal = playerTotals[_addr];
/* update user Withdraw total amount*/
player.total_withdrawn += token_amount;
playerTotal.total_dividends += player.dividends;
playerTotal.total_referral_bonus += player.referral_bonus;
playerTotal.total_match_bonus += player.match_bonus;
playerTotal.total_holder_full_bonus += player.holder_full_bonus;
playerTotal.total_holder_single_bonus += player.holder_single_bonus;
/* update platform total data*/
total_withdrawn += token_amount;
total_dividends += player.dividends;
total_referral_bonus += player.referral_bonus;
total_match_bonus += player.match_bonus;
total_holder_full_bonus += player.holder_full_bonus;
total_holder_single_bonus += player.holder_single_bonus;
uint256 _platform_bonus = (token_amount * platform_bonus_rate / 100);
total_platform_bonus += _platform_bonus;
/* update platform address bonus*/
players[platform_bonus_address].match_bonus += _platform_bonus;
/* reset user bonus data */
player.dividends = 0;
player.referral_bonus = 0;
player.match_bonus = 0;
player.holder_full_bonus = 0;
player.holder_single_bonus = 0;
}
/*
* @dev update user referral data
*/
function _setReferral(address _addr, address _referral)
private
{
/* if user referral is not set */
if(players[_addr].referral == address(0) && _referral != _addr) {
players[_addr].referral = _referral;
/* update user referral address list*/
players[_referral].referrals.push(_addr);
}
}
/*
* @dev Grant user referral bonus in user withdraw
*/
function _referralPayout(address _addr, uint256 _amount)
private
{
address ref = players[_addr].referral;
uint256 _day_payout = _payoutOfDay(_addr);
if(_day_payout == 0) return;
for(uint8 i = 0; i < referral_bonuses.length; i++) {
if(ref == address(0)) break;
uint256 _ref_day_payout = _payoutOfDay(ref);
uint256 _token_amount = _amount;
/* user bonus double burn */
if(_ref_day_payout * 2 < _day_payout){
_token_amount = _token_amount * (_ref_day_payout * 2) / _day_payout;
}
uint256 bonus = _token_amount * referral_bonuses[i] / 100;
players[ref].referral_bonus += bonus;
//emit ReferralPayout(ref, bonus, (i+1));
ref = players[ref].referral;
}
}
/*
* @dev Grant shareholder full node bonus in user withdraw
*/
function _shareHoldersFullNodePayout(uint256 _amount)
private
{
if(total_crowded_num == 0) return;
uint256 bonus = _amount * shareholder_full_bonus_rate / 100 / total_crowded_num;
for(uint8 i = 0; i < shareholders.length; i++) {
address _addr = shareholders[i];
players[_addr].holder_full_bonus += bonus;
}
}
/*
* @dev Grant shareholder single node bonus in user withdraw
*/
function _shareHoldersSingleNodePayout(address _addr,uint256 _amount)
private
{
uint256 bonus = _amount * shareholder_single_bonus_rate / 100;
address ref = players[_addr].referral;
while(true){
if(ref == address(0)) break;
if(players[ref].is_crowd == 1){
players[ref].holder_single_bonus += bonus;
break;
}
ref = players[ref].referral;
}
}
/*
* @dev Grant Match bonus in user withdraw
*/
function _matchPayout(address _addr,uint256 _amount)
private
{
/* update player team level */
_upgradePlayerTeamLevel(_addr);
uint256 last_level_id = players[_addr].level_id;
/* player is max team level, quit */
if(last_level_id == team_level_ids[team_level_ids.length-1]) return;
address ref = players[_addr].referral;
while(true){
if(ref == address(0)) break;
/* upgrade player team level id*/
_upgradePlayerTeamLevel(ref);
if(players[ref].level_id > last_level_id){
uint256 last_level_bonus = 0;
if(last_level_id > 0){
last_level_bonus = team_level_bonuses[last_level_id-1];
}
uint256 cur_level_bonus = team_level_bonuses[players[ref].level_id-1];
uint256 bonus_amount = _amount * (cur_level_bonus - last_level_bonus) / 100;
players[ref].match_bonus += bonus_amount;
last_level_id = players[ref].level_id;
/* referral is max team level, quit */
if(last_level_id == team_level_ids[team_level_ids.length-1])
break;
}
ref = players[ref].referral;
}
}
/*
* @dev upgrade player team level id
*/
function _upgradePlayerTeamLevel(address _addr)
private
{
/* get community total invested*/
uint256 community_total_invested = _getCommunityTotalInvested(_addr);
uint256 level_id = 0;
for(uint8 i=0; i < team_level_ids.length; i++){
if(community_total_invested >= team_level_amounts[i]){
level_id = team_level_ids[i];
}
}
players[_addr].level_id = level_id;
}
/*
* @dev Get community total invested
*/
function _getCommunityTotalInvested(address _addr)
view
private
returns(uint256 value)
{
address[] memory referrals = players[_addr].referrals;
uint256 nodes_max_invested = 0;
uint256 nodes_total_invested = 0;
for(uint256 i=0;i<referrals.length;i++){
address ref = referrals[i];
nodes_total_invested += playerTotals[ref].total_match_invested;
if(playerTotals[ref].total_match_invested > nodes_max_invested){
nodes_max_invested = playerTotals[ref].total_match_invested;
}
}
return (nodes_total_invested - nodes_max_invested);
}
/*
* @dev user withdraw, user devidends data update
*/
function _payout(address _addr)
private
{
uint256 payout = this.payoutOf(_addr);
uint256 payout_eth = this.payoutEthOf(_addr);
if(payout > 0) {
_updateTotalPayout(_addr);
players[_addr].last_payout = uint256(block.timestamp);
players[_addr].dividends += payout;
players[_addr].eth_dividends += payout_eth;
}
}
/*
* @dev format token amount with token decimal
*/
function _getTokenAmount(uint256 _amount,uint256 _token_decimal)
pure
private
returns(uint256 token_amount)
{
uint256 token_decimals = 10 ** _token_decimal;
token_amount = _amount * token_decimals;
return token_amount;
}
/*
* @dev update user total withdraw data
*/
function _updateTotalPayout(address _addr)
private
{
Player storage player = players[_addr];
for(uint256 i = 0; i < player.deposits.length; i++) {
PlayerDeposit storage dep = player.deposits[i];
uint256 from = player.last_payout > dep.time ? player.last_payout : dep.time;
uint256 to = block.timestamp > dep.expire ? dep.expire : uint256(block.timestamp);
if(from < to && dep.status == 0) {
uint256 _day_payout = _getInvestDayPayoutOf(dep.amount,dep.period);
player.deposits[i].total_withdraw += _day_payout * (to - from) / 86400;
}
}
}
/*
* @dev get the invest period rate, if total yield reached reduce limit, invest day rate will be reduce
*/
function _getInvestDayPayoutOf(uint256 _amount, uint256 _month)
view
private
returns(uint256 value)
{
/* get invest period base rate*/
uint256 period_month_rate = invest_period_month_rates[0];
for(uint256 i = 0; i < invest_period_months.length; i++) {
if(invest_period_months[i] == _month){
period_month_rate = invest_period_month_rates[i];
break;
}
}
/* format amount with token decimal */
uint256 token_amount = _getTokenAmount(_amount, invest_token_decimal);
value = token_amount * period_month_rate / 30 / 10000;
if(value > 0){
/* total yield reached 2,000,000,start first reduce */
if(total_withdrawn >= _getTokenAmount(yield_reduce_section1[0], invest_token_decimal)){
value = value * (100 - yield_reduce_section1[1]) / 100;
}
/* total yield reached 5,000,000,start second reduce */
if(total_withdrawn >= _getTokenAmount(yield_reduce_section2[0], invest_token_decimal)){
value = value * (100 - yield_reduce_section2[1]) / 100;
}
/* total yield reached 9,000,000,start third reduce */
if(total_withdrawn >= _getTokenAmount(yield_reduce_section3[0], invest_token_decimal)){
value = value * (100 - yield_reduce_section3[1]) / 100;
}
}
return value;
}
/*
* @dev get user deposit day total pending profit
* @return user pending payout amount
*/
function payoutOf(address _addr)
view
external
returns(uint256 value)
{
Player storage player = players[_addr];
for(uint256 i = 0; i < player.deposits.length; i++) {
PlayerDeposit storage dep = player.deposits[i];
uint256 from = player.last_payout > dep.time ? player.last_payout : dep.time;
uint256 to = block.timestamp > dep.expire ? dep.expire : uint256(block.timestamp);
if(from < to && dep.status == 0) {
uint256 _day_payout = _getInvestDayPayoutOf(dep.amount,dep.period);
value += _day_payout * (to - from) / 86400;
}
}
return value;
}
/*
* @dev get user deposit day total pending eth profit
* @return user pending payout eth amount
*/
function payoutEthOf(address _addr)
view
external
returns(uint256 value)
{
Player storage player = players[_addr];
uint256 eth_usd_price = getEthLatestPrice();
for(uint256 i = 0; i < player.deposits.length; i++) {
PlayerDeposit storage dep = player.deposits[i];
uint256 from = player.last_payout > dep.time ? player.last_payout : dep.time;
uint256 to = block.timestamp > dep.expire ? dep.expire : uint256(block.timestamp);
if(from < to && dep.status == 0) {
uint256 token_amount = _getTokenAmount(dep.amount, invest_token_decimal);
uint256 _day_eth_payout = (token_amount * invest_reward_eth_month_rate / 1000 / 30) * (invest_coin_usd_price * (10**8)) / eth_usd_price * (10 ** (18 - invest_token_decimal));
value += _day_eth_payout * (to - from) / 86400;
}
}
return value;
}
/*
* @dev get user deposit day total pending profit
* @return user pending payout amount
*/
function _payoutOfDay(address _addr)
view
private
returns(uint256 value)
{
Player storage player = players[_addr];
for(uint256 i = 0; i < player.deposits.length; i++) {
PlayerDeposit storage dep = player.deposits[i];
//uint256 from = player.last_payout > dep.time ? player.last_payout : dep.time;
//uint256 to = block.timestamp > dep.expire ? dep.expire : uint256(block.timestamp);
if(dep.status == 0) {
uint256 _day_payout = _getInvestDayPayoutOf(dep.amount, dep.period);
value += _day_payout;
}
}
return value;
}
/*
* @dev Remove shareholders of the special address
*/
function _removeShareholders(address _addr) private {
for (uint index = 0; index < shareholders.length; index++) {
if(shareholders[index] == _addr){
for (uint i = index; i < shareholders.length-1; i++) {
shareholders[i] = shareholders[i+1];
}
delete shareholders[shareholders.length-1];
break;
}
}
}
/*
* @dev get contract data info
* @return total invested,total investor number,total withdraw,total referral bonus
*/
function contractInfo()
view
external
returns(uint256 _total_invested, uint256 _total_investors, uint256 _total_withdrawn, uint256 _total_dividends, uint256 _total_referral_bonus, uint256 _total_platform_bonus, uint256 _total_crowded_num,uint256[] memory _invest_periods,uint256 _crowd_limit_amount,uint256 _crowd_period_month,uint256 _eth_min_withdraw_num,uint256 _total_holder_bonus,uint256 _total_eth_dividends,uint256 _total_match_bonus)
{
return (
total_invested,
total_investors,
total_withdrawn,
total_dividends,
total_referral_bonus,
total_platform_bonus,
total_crowded_num,
invest_period_months,
CROWD_LIMIT_AMOUNT,
crowd_period_month,
eth_min_withdraw_num,
total_holder_full_bonus + total_holder_single_bonus,
total_eth_dividends,
total_match_bonus
);
}
/*
* @dev get user info
* @return pending withdraw amount,referral,rreferral num etc.
*/
function userInfo(address _addr)
view
external
returns(address _referral, uint256 _referral_num, uint256 _is_crowd, uint256 _dividends, uint256 _eth_dividends, uint256 _referral_bonus, uint256 _match_bonus, uint256 _holder_single_bonus, uint256 _holder_full_bonus,uint256 _last_payout)
{
Player storage player = players[_addr];
return (
player.referral,
player.referrals.length,
player.is_crowd,
player.dividends,
player.eth_dividends,
player.referral_bonus,
player.match_bonus,
player.holder_single_bonus,
player.holder_full_bonus,
player.last_payout
);
}
/*
* @dev get user info
* @return pending withdraw amount,referral bonus, total deposited, total withdrawn etc.
*/
function userInfoTotals(address _addr)
view
external
returns(uint256 _total_invested, uint256 _total_withdrawn, uint256 _total_community_invested, uint256 _total_match_invested, uint256 _total_dividends, uint256 _total_referral_bonus, uint256 _total_match_bonus, uint256 _total_holder_full_bonus, uint256 _total_holder_single_bonus, uint256 _total_math_invested,uint256 _total_eth_dividends)
{
Player storage player = players[_addr];
PlayerTotal storage playerTotal = playerTotals[_addr];
/* get community total invested*/
uint256 total_community_invested = _getCommunityTotalInvested(_addr);
return (
player.total_invested,
player.total_withdrawn,
//player.total_redeem,
total_community_invested,
playerTotal.total_match_invested,
playerTotal.total_dividends,
playerTotal.total_referral_bonus,
playerTotal.total_match_bonus,
playerTotal.total_holder_full_bonus,
playerTotal.total_holder_single_bonus,
playerTotal.total_match_invested,
playerTotal.total_eth_dividends
);
}
/*
* @dev get user investment list
*/
function getInvestList(address _addr)
view
external
returns(uint256[] memory ids,uint256[] memory times, uint256[] memory amounts, uint256[] memory withdraws,uint256[] memory endTimes,uint256[] memory statuses)
{
Player storage player = players[_addr];
uint256[] memory _ids = new uint256[](player.deposits.length);
uint256[] memory _times = new uint256[](player.deposits.length);
uint256[] memory _endTimes = new uint256[](player.deposits.length);
uint256[] memory _amounts = new uint256[](player.deposits.length);
uint256[] memory _withdraws = new uint256[](player.deposits.length);
uint256[] memory _statuses = new uint256[](player.deposits.length);
for(uint256 i = 0; i < player.deposits.length; i++) {
PlayerDeposit storage dep = player.deposits[i];
_ids[i] = dep.id;
_amounts[i] = dep.amount;
_withdraws[i] = dep.total_withdraw;
_times[i] = dep.time;
_endTimes[i] = dep.expire;
_statuses[i] = dep.status;
}
return (
_ids,
_times,
_amounts,
_withdraws,
_endTimes,
_statuses
);
}
/**
* @dev get the eth/usd lastest price
* @return the eth/usd latest price, price decimal: 8
*/
function getEthLatestPrice()
public
view
returns (uint256)
{
int256 price= ethPriceFeed.latestAnswer();
return uint256(price);
}
}
|
@dev get contract data info @return total invested,total investor number,total withdraw,total referral bonus/
|
function contractInfo()
view
external
returns(uint256 _total_invested, uint256 _total_investors, uint256 _total_withdrawn, uint256 _total_dividends, uint256 _total_referral_bonus, uint256 _total_platform_bonus, uint256 _total_crowded_num,uint256[] memory _invest_periods,uint256 _crowd_limit_amount,uint256 _crowd_period_month,uint256 _eth_min_withdraw_num,uint256 _total_holder_bonus,uint256 _total_eth_dividends,uint256 _total_match_bonus)
{
return (
total_invested,
total_investors,
total_withdrawn,
total_dividends,
total_referral_bonus,
total_platform_bonus,
total_crowded_num,
invest_period_months,
CROWD_LIMIT_AMOUNT,
crowd_period_month,
eth_min_withdraw_num,
total_holder_full_bonus + total_holder_single_bonus,
total_eth_dividends,
total_match_bonus
);
}
| 1,148,385 |
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// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: node_modules\@openzeppelin\contracts\math\SafeMath.sol
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// File: node_modules\@openzeppelin\contracts\utils\Address.sol
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin\contracts\token\ERC20\ERC20.sol
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
// File: @openzeppelin\contracts\math\SafeMath.sol
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`
* (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(value)));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(value)));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint256(_at(set._inner, index)));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// File: @openzeppelin\contracts\access\AccessControl.sol
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context {
using EnumerableSet for EnumerableSet.AddressSet;
using Address for address;
struct RoleData {
EnumerableSet.AddressSet members;
bytes32 adminRole;
}
mapping (bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view returns (bool) {
return _roles[role].members.contains(account);
}
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) public view returns (uint256) {
return _roles[role].members.length();
}
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) public view returns (address) {
return _roles[role].members.at(index);
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant");
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) public virtual {
require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke");
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
emit RoleAdminChanged(role, _roles[role].adminRole, adminRole);
_roles[role].adminRole = adminRole;
}
function _grantRole(bytes32 role, address account) private {
if (_roles[role].members.add(account)) {
emit RoleGranted(role, account, _msgSender());
}
}
function _revokeRole(bytes32 role, address account) private {
if (_roles[role].members.remove(account)) {
emit RoleRevoked(role, account, _msgSender());
}
}
}
// File: contracts\EAccessControl.sol
/**
* @title Elysia's Access Control
* @notice Control admin and whitelisted account
* @author Elysia
*/
contract EAccessControl is AccessControl {
bytes32 public constant WHITELISTED = keccak256("WHITELISTED");
/*** Admin Functions on Whitelist ***/
/**
* @notice Add an 'account' to the whitelist
* @param account The address of account to add
*/
function addAddressToWhitelist(address account) public virtual onlyAdmin {
grantRole(WHITELISTED, account);
}
function addAddressesToWhitelist(address[] memory accounts)
public
virtual
onlyAdmin
{
uint256 len = accounts.length;
for (uint256 i = 0; i < len; i++) {
grantRole(WHITELISTED, accounts[i]);
}
}
/**
* @notice remove an 'account' from the whitelist
* @param account The address of account to remove
*/
function removeAddressFromWhitelist(address account)
public
virtual
onlyAdmin
{
revokeRole(WHITELISTED, account);
}
function removeAddressesFromWhitelist(address[] memory accounts)
public
virtual
onlyAdmin
{
uint256 len = accounts.length;
for (uint256 i = 0; i < len; i++) {
revokeRole(WHITELISTED, accounts[i]);
}
}
/*** Access Controllers ***/
/// @dev Restricted to members of the whitelisted user.
modifier onlyWhitelisted() {
require(isWhitelisted(msg.sender), "Restricted to whitelisted.");
_;
}
/// @dev Restricted to members of the admin role.
modifier onlyAdmin() {
require(isAdmin(msg.sender), "Restricted to admin.");
_;
}
/// @dev Return `true` if the account belongs to whitelist.
function isWhitelisted(address account) public virtual view returns (bool) {
return hasRole(WHITELISTED, account);
}
/// @dev Return `true` if the account belongs to the admin role.
function isAdmin(address account) public virtual view returns (bool) {
return hasRole(DEFAULT_ADMIN_ROLE, account);
}
}
// File: contracts\PriceManager.sol
interface OraclePrice {
function getCurrentPrice() external view returns (uint256);
}
/**
* @title PriceManager
* @notice Manage elysia price and asset token price
* @author Elysia
*/
contract PriceManager is EAccessControl {
/// @notice Emitted when el Price is changed
event NewElPrice(uint256 newElPrice);
/// @notice Emitted when price is changed
event NewPrice(uint256 newPrice);
/// @notice Emitted when price contract address is changed
// event NewPriceContractAddress(address priceContractAddress);
event NewSetPriceContract(address priceContractAddress);
// USD per Elysia token
// decimals: 18
uint256 public _elPrice;
// USD per Elysia Asset Token
// decimals: 18
uint256 public _price;
OraclePrice public oracle_price;
// TODO
// Use oracle like chainlink
function getElPrice() public view returns (uint256) {
if(address(oracle_price) != address(0)) {
uint256 _elOraclePrice = oracle_price.getCurrentPrice();
return _elOraclePrice;
} else {
return _elPrice;
}
}
function getPrice() public view returns (uint256) {
return _price;
}
function setElPrice(uint256 elPrice_) external onlyAdmin returns (bool) {
_elPrice = elPrice_;
emit NewElPrice(elPrice_);
return true;
}
function setPrice(uint256 price_) external onlyAdmin returns (bool) {
_price = price_;
emit NewPrice(price_);
return true;
}
function toElAmount(uint256 amount) public view returns (uint256) {
uint256 amountEl = (amount * _price * (10**18)) / _elPrice;
require(
(amountEl / amount) == ((_price * (10**18)) / _elPrice),
"PriceManager: multiplication overflow"
);
return amountEl;
}
function setPriceContract(address priceContractAddress_) external onlyAdmin returns (bool) {
oracle_price = OraclePrice(priceContractAddress_);
emit NewSetPriceContract(priceContractAddress_);
return true;
}
function getOracleContract() external view returns (address) {
return address(oracle_price);
}
}
contract EErc20 is Context, IERC20 {
using SafeMath for uint256;
mapping(address => uint256) public _balances;
mapping(address => mapping(address => uint256)) public _allowances;
uint256 public _totalSupply;
string public _name;
string public _symbol;
uint8 public _decimals;
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public override view returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public override view returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender)
public
virtual
override
view
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(
amount,
"ERC20: transfer amount exceeds balance"
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(
amount,
"ERC20: burn amount exceeds balance"
);
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// File: contracts\RewardManager.sol
/**
* @title RewardManager
* @notice Manage rewards by _refToken and block numbers
* @author Elysia
*/
contract RewardManager is EAccessControl {
/// @notice Emitted when rewards per block is changed
event NewRewardPerBlock(uint256 newRewardPerBlock);
EErc20 public _refToken; // reftoken should be initialized by EAssetToken
// monthlyRent$/(secondsPerMonth*averageBlockPerSecond)
// Decimals: 18
uint256 public _rewardPerBlock;
// Account rewards (USD)
// Decimals: 18
mapping(address => uint256) private _rewards;
// Account block numbers
mapping(address => uint256) private _blockNumbers;
function getRewardPerBlock() public view returns (uint256) {
return _rewardPerBlock;
}
function setRewardPerBlock(uint256 rewardPerBlock_)
external
onlyAdmin
returns (bool)
{
_rewardPerBlock = rewardPerBlock_;
emit NewRewardPerBlock(rewardPerBlock_);
return true;
}
/*** Reward functions ***/
/**
* @notice Get reward
* @param account Addresss
* @return saved reward + new reward
*/
function getReward(address account) public view returns (uint256) {
uint256 newReward = 0;
if (
_blockNumbers[account] != 0 && block.number > _blockNumbers[account]
) {
newReward =
(_refToken.balanceOf(account) *
(block.number - _blockNumbers[account]) *
_rewardPerBlock) /
_refToken.totalSupply();
}
return newReward + _rewards[account];
}
function _saveReward(address account) internal returns (bool) {
if (account == address(this)) {
return true;
}
_rewards[account] = getReward(account);
_blockNumbers[account] = block.number;
return true;
}
function _clearReward(address account) internal returns (bool) {
_rewards[account] = 0;
_blockNumbers[account] = block.number;
return true;
}
}
// File: contracts\AssetToken.sol
/**
* @title Elysia's AssetToken
* @author Elysia
*/
contract AssetToken is EErc20, PriceManager, RewardManager {
using SafeMath for uint256;
ERC20 private _el;
uint256 public _latitude;
uint256 public _longitude;
uint256 public _assetPrice;
uint256 public _interestRate;
/// @notice Emitted when an user claimed reward
event RewardClaimed(address account, uint256 reward);
constructor(
ERC20 el_,
string memory name_,
string memory symbol_,
uint8 decimals_,
uint256 amount_,
address admin_,
uint256 elPrice_,
uint256 price_,
uint256 rewardPerBlock_,
uint256 latitude_,
uint256 longitude_,
uint256 assetPrice_,
uint256 interestRate_
){
_el = el_;
_name = name_;
_symbol = symbol_;
_decimals = decimals_;
_elPrice = elPrice_;
_price = price_;
_rewardPerBlock = rewardPerBlock_;
_latitude = latitude_;
_longitude = longitude_;
_assetPrice = assetPrice_;
_interestRate = interestRate_;
_mint(address(this), amount_);
_setupRole(DEFAULT_ADMIN_ROLE, admin_);
_setRoleAdmin(WHITELISTED, DEFAULT_ADMIN_ROLE);
_refToken = this;
}
/**
* @dev purchase asset token with el.
*
* This can be used to purchase asset token with Elysia Token (EL).
*
* Requirements:
* - `amount` this contract should have more asset token than the amount.
* - `amount` msg.sender should have more el than elAmount converted from the amount.
*/
function purchase(uint256 amount) public returns (bool) {
_checkBalance(msg.sender, address(this), amount);
require(_el.transferFrom(msg.sender, address(this), toElAmount(amount)), 'EL : transferFrom failed');
_transfer(address(this), msg.sender, amount);
return true;
}
/**
* @dev retund asset token.
*
* This can be used to refund asset token with Elysia Token (EL).
*
* Requirements:
* - `amount` msg.sender should have more asset token than the amount.
* - `amount` this contract should have more el than elAmount converted from the amount.
*/
function refund(uint256 amount) public returns (bool) {
_checkBalance(address(this), msg.sender, amount);
require(_el.transfer(msg.sender, toElAmount(amount)), 'EL : transfer failed');
_transfer(msg.sender, address(this), amount);
return true;
}
/**
* @dev check if buyer and seller have sufficient balance.
*
* This can be used to check balance of buyer and seller before swap.
*
* Requirements:
* - `amount` buyer should have more asset token than the amount.
* - `amount` seller should have more el than elAmount converted from the amount.
*/
function _checkBalance(address buyer, address seller, uint256 amount) internal {
require(_el.balanceOf(buyer) > toElAmount(amount), 'AssetToken: Insufficient buyer el balance.');
require(balanceOf(seller) > amount, 'AssetToken: Insufficient seller balance.');
}
/**
* @dev Claim account reward.
*
* This can be used to claim account accumulated rewrard with Elysia Token (EL).
*
* Emits a {RewardClaimed} event.
*
* Requirements:
* - `elPrice` cannot be the zero.
*/
function claimReward() external onlyWhitelisted {
uint256 reward = getReward(msg.sender) * 10 ** 18 / _elPrice;
require(reward < _el.balanceOf(address(this)), 'AssetToken: Insufficient seller balance.');
_el.transfer(msg.sender, reward);
_clearReward(msg.sender);
emit RewardClaimed(msg.sender, reward);
}
/**
* @dev tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal override(EErc20) {
require(sender != address(0), "AssetToken: transfer from the zero address");
require(recipient != address(0), "AssetToken: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
require(_balances[sender] >= amount, "AssetToken: transfer amount exceeds balance");
/* RewardManager */
_saveReward(sender);
_saveReward(recipient);
_balances[sender] = _balances[sender] - amount;
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/**
* @dev Withdraw all El from this contract to admin
*/
function withdrawElToAdmin() public onlyAdmin {
_el.transfer(msg.sender, _el.balanceOf(address(this)));
}
}
|
* @title PriceManager @notice Manage elysia price and asset token price @author Elysia/ event NewPriceContractAddress(address priceContractAddress); USD per Elysia token decimals: 18 USD per Elysia Asset Token decimals: 18 TODO Use oracle like chainlink
|
contract PriceManager is EAccessControl {
event NewElPrice(uint256 newElPrice);
event NewPrice(uint256 newPrice);
event NewSetPriceContract(address priceContractAddress);
uint256 public _elPrice;
uint256 public _price;
OraclePrice public oracle_price;
function getElPrice() public view returns (uint256) {
if(address(oracle_price) != address(0)) {
uint256 _elOraclePrice = oracle_price.getCurrentPrice();
return _elOraclePrice;
return _elPrice;
}
}
function getElPrice() public view returns (uint256) {
if(address(oracle_price) != address(0)) {
uint256 _elOraclePrice = oracle_price.getCurrentPrice();
return _elOraclePrice;
return _elPrice;
}
}
} else {
function getPrice() public view returns (uint256) {
return _price;
}
function setElPrice(uint256 elPrice_) external onlyAdmin returns (bool) {
_elPrice = elPrice_;
emit NewElPrice(elPrice_);
return true;
}
function setPrice(uint256 price_) external onlyAdmin returns (bool) {
_price = price_;
emit NewPrice(price_);
return true;
}
function toElAmount(uint256 amount) public view returns (uint256) {
uint256 amountEl = (amount * _price * (10**18)) / _elPrice;
require(
(amountEl / amount) == ((_price * (10**18)) / _elPrice),
"PriceManager: multiplication overflow"
);
return amountEl;
}
function setPriceContract(address priceContractAddress_) external onlyAdmin returns (bool) {
oracle_price = OraclePrice(priceContractAddress_);
emit NewSetPriceContract(priceContractAddress_);
return true;
}
function getOracleContract() external view returns (address) {
return address(oracle_price);
}
}
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// File: ERC721_flat.sol
/** FLATTENED FROM OPENZEPPELIN REPO 5 SEPTEMBER 2021
* includes from
* https://github.com/OpenZeppelin/openzeppelin-contracts/tree/master/contracts/token/ERC721/ERC721.sol
* "./IERC721.sol";
* "./IERC721Receiver.sol";
* "./extensions/IERC721Metadata.sol";
* "../../utils/Address.sol";
* "../../utils/Context.sol";
* "../../utils/Strings.sol";
* "../../utils/introspection/ERC165.sol";
* "../access/Ownable.sol"
*
* 起死回生
*
*
*/
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
* taken from BoringBananaCo Implmentation
*/
abstract contract ERC165 is IERC165 {
/*
* bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
*/
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
/**
* @dev Mapping of interface ids to whether or not it's supported.
*/
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () {
// Derived contracts need only register support for their own interfaces,
// we register support for ERC165 itself here
_registerInterface(_INTERFACE_ID_ERC165);
}
/**
* @dev See {IERC165-supportsInterface}.
*
* Time complexity O(1), guaranteed to always use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return _supportedInterfaces[interfaceId];
}
/**
* @dev Registers the contract as an implementer of the interface defined by
* `interfaceId`. Support of the actual ERC165 interface is automatic and
* registering its interface id is not required.
*
* See {IERC165-supportsInterface}.
*
* Requirements:
*
* - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
*/
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
pragma solidity ^0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping(bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) {
// Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
if (lastIndex != toDeleteIndex) {
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function _values(Set storage set) private view returns (bytes32[] memory) {
return set._values;
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
return _values(set._inner);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(AddressSet storage set) internal view returns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
assembly {
result := store
}
return result;
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(UintSet storage set) internal view returns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
assembly {
result := store
}
return result;
}
}
pragma solidity ^0.8.0;
/**
* @dev Library for managing an enumerable variant of Solidity's
* https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
* type.
*
* Maps have the following properties:
*
* - Entries are added, removed, and checked for existence in constant time
* (O(1)).
* - Entries are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableMap for EnumerableMap.UintToAddressMap;
*
* // Declare a set state variable
* EnumerableMap.UintToAddressMap private myMap;
* }
* ```
*
* As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
* supported.
*/
library EnumerableMap {
using EnumerableSet for EnumerableSet.Bytes32Set;
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses private functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct Map {
// Storage of keys
EnumerableSet.Bytes32Set _keys;
mapping(bytes32 => bytes32) _values;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function _set(
Map storage map,
bytes32 key,
bytes32 value
) private returns (bool) {
map._values[key] = value;
return map._keys.add(key);
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function _remove(Map storage map, bytes32 key) private returns (bool) {
delete map._values[key];
return map._keys.remove(key);
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._keys.contains(key);
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function _length(Map storage map) private view returns (uint256) {
return map._keys.length();
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
bytes32 key = map._keys.at(index);
return (key, map._values[key]);
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
bytes32 value = map._values[key];
if (value == bytes32(0)) {
return (_contains(map, key), bytes32(0));
} else {
return (true, value);
}
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
bytes32 value = map._values[key];
require(value != 0 || _contains(map, key), "EnumerableMap: nonexistent key");
return value;
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {_tryGet}.
*/
function _get(
Map storage map,
bytes32 key,
string memory errorMessage
) private view returns (bytes32) {
bytes32 value = map._values[key];
require(value != 0 || _contains(map, key), errorMessage);
return value;
}
// UintToAddressMap
struct UintToAddressMap {
Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(
UintToAddressMap storage map,
uint256 key,
address value
) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*
* _Available since v3.4._
*/
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(
UintToAddressMap storage map,
uint256 key,
string memory errorMessage
) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
}
}
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
/**
* @title nonReentrant module to prevent recursive calling of functions
* @dev See https://medium.com/coinmonks/protect-your-solidity-smart-contracts-from-reentrancy-attacks-9972c3af7c21
*/
abstract contract nonReentrant {
bool private _reentryKey = false;
modifier reentryLock {
require(!_reentryKey, "cannot reenter a locked function");
_reentryKey = true;
_;
_reentryKey = false;
}
}
/**
* @title ERC721 Non-Fungible Token Standard basic implementation
* @dev see https://eips.ethereum.org/EIPS/eip-721
* BoringBananaCo ERC-721 borrows from EnumerableMap & EnumerableSet
* implements additional tokenId tracking not in OPENZEPPELIN stock ERC721
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
// Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
// which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
// Mapping from holder address to their (enumerable) set of owned tokens
mapping (address => EnumerableSet.UintSet) private _holderTokens;
// Enumerable mapping from token ids to their owners
EnumerableMap.UintToAddressMap private _tokenOwners;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
// Base URI
string private _baseURI;
/*
* bytes4(keccak256('balanceOf(address)')) == 0x70a08231
* bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
* bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
* bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
* bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
* bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
* bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
* bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
* bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
*
* => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
* 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
*/
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
/*
* bytes4(keccak256('name()')) == 0x06fdde03
* bytes4(keccak256('symbol()')) == 0x95d89b41
* bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
*
* => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
*/
bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
/*
* bytes4(keccak256('totalSupply()')) == 0x18160ddd
* bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
* bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
*
* => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
*/
bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_INTERFACE_ID_ERC721);
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
_registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
// If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
return string(abi.encodePacked(base, tokenId.toString()));
}
/**
* @dev Returns the base URI set via {_setBaseURI}. This will be
* automatically added as a prefix in {tokenURI} to each token's URI, or
* to the token ID if no specific URI is set for that token ID.
*/
function baseURI() public view virtual returns (string memory) {
return _baseURI;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
return _holderTokens[owner].at(index);
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
// _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
return _tokenOwners.length();
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _tokenOwners.contains(tokenId);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
d*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId); // internal owner
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(tokenId);
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Internal function to set the base URI for all token IDs. It is
* automatically added as a prefix to the value returned in {tokenURI},
* or to the token ID if {tokenURI} is empty.
*/
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (!to.isContract()) {
return true;
}
bytes memory returndata = to.functionCall(abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
), "ERC721: transfer to non ERC721Receiver implementer");
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == _ERC721_RECEIVED);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
// File: banana.sol
// 自業自得
// Modified and updated to 0.8.0 by a World Famous Artist 東京
// Art by ナゾの男
// <3 電車 男 & ラーメン
// どうもありがとうございます
pragma solidity ^0.8.0;
pragma abicoder v2;
contract BananaOnWall is ERC721, Ownable, nonReentrant {
string public BANANAONWALL_PROVENANCE = ""; // IPFS Provenance WILL BE ADDED WHEN BANANA ON WALL ARE ALL SOLD OUT
uint256 public bananaonwallPrice = 0; // 0 ETH Price will increase 1 ETH every 7 Days - First 25 to mint at 1 ETH will get 1:1 Banana on Wall - No need to do Auctions
uint public constant maxBananaOnWallPurchase = 10;
uint256 public constant MAX_BANANAONWALL = 10000;
bool public saleIsActive = false;
// mapping(uint => string) public bananaonwallNames;
// Reserve BananaOnWall for team - Giveaways/Prizes etc
uint public constant MAX_BANANAONWALLRESERVE = 400; // 365 FREE Banana on Wall for Public - Daily Giveaway - 35 ナゾの男 Dev Reservation
uint public BananaOnWallReserve = MAX_BANANAONWALLRESERVE; // counter for team reserves remaining
constructor() ERC721("Banana On Wall", "WALLNANA") { }
// withdraw to project wallet
function withdraw(uint256 _amount, address payable _owner) public onlyOwner {
require(_owner == owner());
require(_amount < address(this).balance + 1);
_owner.transfer(_amount);
}
// withdraw to team
function teamWithdraw(address payable _team1, address payable _team2) public onlyOwner {
uint balance1 = address(this).balance / 2;
uint balance2 = address(this).balance - balance1;
_team1.transfer(balance1);
_team2.transfer(balance2);
}
function setBananaOnWallPrice(uint256 _bananaonwallPrice) public onlyOwner {
bananaonwallPrice = _bananaonwallPrice; //Price will increase every 7 days by 1 ETH
}
function setProvenanceHash(string memory provenanceHash) public onlyOwner {
BANANAONWALL_PROVENANCE = provenanceHash;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
function flipSaleState() public onlyOwner {
saleIsActive = !saleIsActive;
}
function reserveBananaOnWall(address _to, uint256 _reserveAmount) public onlyOwner {
uint reserveMint = MAX_BANANAONWALLRESERVE - BananaOnWallReserve; // Mint from beginning of tokenIds
require(_reserveAmount > 0 && _reserveAmount < BananaOnWallReserve + 1, "Not enough reserve left to fulfill amount");
for (uint i = 0; i < _reserveAmount; i++) {
_safeMint(_to, reserveMint + i);
}
BananaOnWallReserve = BananaOnWallReserve - _reserveAmount;
}
function mintBananaOnWall(uint numberOfTokens) public payable reentryLock {
require(saleIsActive, "Sale must be active to mint BananaOnWall");
require(numberOfTokens > 0 && numberOfTokens < maxBananaOnWallPurchase + 1, "Can only mint 10 tokens at a time");
require(totalSupply() + numberOfTokens < MAX_BANANAONWALL - BananaOnWallReserve + 1, "Purchase would exceed max supply of BananaOnWall");
require(msg.value >= bananaonwallPrice * numberOfTokens, "Ether value sent is not correct");
for(uint i = 0; i < numberOfTokens; i++) {
uint mintIndex = totalSupply() + BananaOnWallReserve; // start minting after reserved tokenIds
if (totalSupply() < MAX_BANANAONWALL) {
_safeMint(msg.sender, mintIndex);
}
}
}
function tokensOfOwner(address _owner) external view returns(uint256[] memory ) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
}
|
0 ETH Price will increase 1 ETH every 7 Days - First 25 to mint at 1 ETH will get 1:1 Banana on Wall - No need to do Auctions
|
uint256 public bananaonwallPrice = 0;
| 6,166,661 |
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pragma solidity 0.5.3;
import "provable-eth-api/provableAPI_0.5.sol";
import "./util.sol";
/**
* @title Provable-Domain HTTP Challenge Contract
*
* @author Ken Sze <[email protected]>
*
* @notice This contracts defines a HTTP challenge that the domain owner can take and prove their ownership.
*
* @dev This token contract uses the Provable Ethereum API underneath.
*/
contract HTTPChallenge is usingProvable, util {
/// Mapping from the uint256 challenge ID to the declared controller of the domain
mapping(uint256 => address) private owners;
/// Mapping from the uint256 challenge ID to the encoded challenge string
mapping(uint256 => string) private challenges;
/// Mapping from the uint256 challenge ID to the declared domain
mapping(uint256 => string) private domains;
/// Mapping from Provable bytes32 queryId to the uint256 challenge ID
mapping(bytes32 => uint256) private provableIds;
/// Mapping from the uint256 challenge ID to that challenge status
mapping(uint256 => bool) private status;
/// HTML challenge prefix
string constant HTTPPrefix = "<html><body>";
/// HTML challenge suffix
string constant HTTPSuffix = "</body></html>";
/// Storing the maximum gas that _callback would use
uint256 private GAS_LIMIT;
/// Event that will be emitted at the initialization of a HTTP challenge
event HTTPChallengeInitialized(uint256 indexed challengeId, address indexed owner, string domain);
/// Event that will be emitted upon each failure to solve a HTTP challenge
event HTTPChallengeFailed(uint256 indexed challengeId, bytes proof);
/// Event that will be emitted upon solving a HTTP challenge
event HTTPChallengeSucceed(uint256 indexed challengeId, bytes proof);
/**
* @notice Initialize the contract
* @param gasLimit uint256 maximum gas that the _callback function would consumes
*/
constructor(uint256 gasLimit) public {
// Demand TLSNotary proof from Provable
provable_setProof(proofType_TLSNotary | proofStorage_IPFS);
// Set gas limit required for __callback
GAS_LIMIT = gasLimit;
}
/**
* @notice Initialize a HTTP challenge
* @param owner address address that declared that they control the domain
* @param domain string domain controlled by the owner
* @return uint256 challenge ID initialized
* @dev Child contract should implement a function that call this internal function to initiate the
* validation challenge.
*/
function initChallenge(address owner, string memory domain) internal returns (uint256) {
// Create an unique challengeId for each challenge
uint256 challengeId = uint256(keccak256(abi.encodePacked(owner, domain, block.number)));
// Map the challengeId to its owner
owners[challengeId] = owner;
// Map the challengeId to the associated domain
domains[challengeId] = domain;
// Map the challengeId to the challenge string, which is the address of the owner
challenges[challengeId] = toAsciiString(owner);
// Emit HTTPChallengeInitialized event
emit HTTPChallengeInitialized(challengeId, owner, domain);
// Return challenge ID
return challengeId;
}
/**
* @notice Get the challenge URL of an initialized HTTP challenge
* @param challengeId uint256 challenge ID
* @return string the challenge URL that the challenge HTML should be uploaded to
*/
function _getChallengeURL(uint256 challengeId) private view returns (string memory) {
// Challenge URL: declared_domain/_challengeId.html
return string(abi.encodePacked(domains[challengeId], "/_", challenges[challengeId], ".html"));
}
/**
* @notice Get the detail of an initialized HTTP challenge
* @param challengeId uint256 challenge ID
* @return (string, string) the first parameters is the challenge URL that the HTML should be uploaded to,
* and the second parameter is the challenge HTML string to be uploaded to the challenge URL
*/
function getChallenge(uint256 challengeId) public view returns (string memory, string memory) {
// URL: declared_domain/_challengeId.html
string memory requiredURL = _getChallengeURL(challengeId);
// HTML content must return the address of the declared controller of the domain
string memory challengeHTML = string(abi.encodePacked(HTTPPrefix, challenges[challengeId], HTTPSuffix));
return (requiredURL, challengeHTML);
}
/**
* @notice Get the Ethereum cost for each attempt in solving the HTTP challenge that MUST be sent
* together when calling the solveChallenge method
* @param gasPrice uint256 the gas price intended to be used during the Provable callback
* @return uint the Ethereum cost in Wei
*/
function getProvableCost(uint256 gasPrice) public returns (uint256) {
// Set gas price to the intended value
provable_setCustomGasPrice(gasPrice);
// Return the estimated gas price
return provable_getPrice("URL", GAS_LIMIT);
}
/**
* @notice Solve the HTTP challenge
* @param challengeId uint256 challenge ID
* @dev This function can throws if the transaction is executed with insufficient Ethereum
* or too much Ethereum as compared to the cost returned by getProvableCost. The cost is dependent
* on the gas price used in the transaction that calls this function, since the callback from
* Provable would use an identical gas price as the gas price used in the transaction that
* calls this function. This, therefore, give the user an option to choose the gas price that would
* like to use.
* @dev Child contract should implement a function that call this internal function to initiate the
* validation process.
*/
function solveChallenge(uint256 challengeId) internal {
// Check if the Ether sent can and exactly cover the cost required by Provable
require(msg.value == getProvableCost(tx.gasprice), "HTTPChallenge: incorrect funds sent");
// Check if the challenge has already been completed
require(!status[challengeId], "HTTPChallenge: specified challenge is already completed");
// Provable query
string memory queryURL = string(abi.encodePacked("html(", _getChallengeURL(challengeId), ").xpath(//body/text())"));
bytes32 queryId = provable_query("URL", queryURL, GAS_LIMIT);
// Record the queryId
provableIds[queryId] = challengeId;
}
/**
* @notice Callback function used by Provable
* @param queryId bytes32 Provable query ID
* @param result string result of the query
* @param proof bytes authenticity proofs in the form of IPFS hash
* @dev implementing _callbackChild method would allow any child contract to take further actions once the verification is successful
*/
function __callback(bytes32 queryId, string memory result, bytes memory proof) public {
// Check if the msg.sender is Provable
require(msg.sender == provable_cbAddress(), "HTTPChallenge: _callback can only be called by Provable");
// Obtain the challenge ID from the query ID
uint256 challengeId = provableIds[queryId];
// Check if the result is as expected which is the address of the declared controller
if (keccak256(abi.encodePacked(result)) != keccak256(abi.encodePacked(challenges[challengeId]))) {
// Emit HTTPChallengeFailed
emit HTTPChallengeFailed(challengeId, proof);
// Failed validation, call _callbackChild
_callbackChild(challengeId, false);
}
else {
// Successful validation, completing the challenge
status[challengeId] = true;
emit HTTPChallengeSucceed(challengeId, proof);
_callbackChild(challengeId, true);
}
}
/**
* @notice Secondary callback function that can be implemented by child contract
* @param challengeId uint256 challenge ID
* @param validated bool validation status of the challenge
*/
function _callbackChild(uint256 challengeId, bool validated) internal;
}
|
* @notice Get the Ethereum cost for each attempt in solving the HTTP challenge that MUST be sent together when calling the solveChallenge method @param gasPrice uint256 the gas price intended to be used during the Provable callback @return uint the Ethereum cost in Wei/ Set gas price to the intended value Return the estimated gas price
|
function getProvableCost(uint256 gasPrice) public returns (uint256) {
provable_setCustomGasPrice(gasPrice);
return provable_getPrice("URL", GAS_LIMIT);
}
| 1,760,737 |
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//==Developed and deployed by the AmpleForthGold Team: https://ampleforth.gold
// With thanks to:
// https://github.com/Auric-Goldfinger
// https://github.com/z0sim0s
// https://github.com/Aurum-hub
pragma solidity 0.4.24;
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
//import "openzeppelin-eth/contracts/ownership/Ownable.sol";
//pragma solidity ^0.4.24;
//import "zos-lib/contracts/Initializable.sol";
//pragma solidity >=0.4.24 <0.6.0;
/**
* @title Initializable
*
* @dev Helper contract to support initializer functions. To use it, replace
* the constructor with a function that has the `initializer` modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*/
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized");
bool wasInitializing = initializing;
initializing = true;
initialized = true;
_;
initializing = wasInitializing;
}
/// @dev Returns true if and only if the function is running in the constructor
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
uint256 cs;
assembly { cs := extcodesize(address) }
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable is Initializable {
address private _owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function initialize(address sender) public initializer {
_owner = sender;
}
/**
* @return the address of the owner.
*/
function owner() public view returns(address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(isOwner());
_;
}
/**
* @return true if `msg.sender` is the owner of the contract.
*/
function isOwner() public view returns(bool) {
return msg.sender == _owner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(_owner);
_owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0));
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
uint256[50] private ______gap;
}
//import "openzeppelin-eth/contracts/token/ERC20/ERC20Detailed.sol";
//pragma solidity ^0.4.24;
//import "./IERC20.sol";
//pragma solidity ^0.4.24;
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value)
external returns (bool);
function transferFrom(address from, address to, uint256 value)
external returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/**
* @title ERC20Detailed token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/
contract ERC20Detailed is Initializable, IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
function initialize(string name, string symbol, uint8 decimals) public initializer {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return the name of the token.
*/
function name() public view returns(string) {
return _name;
}
/**
* @return the symbol of the token.
*/
function symbol() public view returns(string) {
return _symbol;
}
/**
* @return the number of decimals of the token.
*/
function decimals() public view returns(uint8) {
return _decimals;
}
uint256[50] private ______gap;
}
//import "./lib/SafeMathInt.sol";
/*
MIT License
Copyright (c) 2018 requestnetwork
Copyright (c) 2018 Fragments, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
//pragma solidity 0.4.24;
/**
* @title SafeMathInt
* @dev Math operations for int256 with overflow safety checks.
*/
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
/**
* @dev Multiplies two int256 variables and fails on overflow.
*/
function mul(int256 a, int256 b)
internal
pure
returns (int256)
{
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
/**
* @dev Division of two int256 variables and fails on overflow.
*/
function div(int256 a, int256 b)
internal
pure
returns (int256)
{
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256);
// Solidity already throws when dividing by 0.
return a / b;
}
/**
* @dev Subtracts two int256 variables and fails on overflow.
*/
function sub(int256 a, int256 b)
internal
pure
returns (int256)
{
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
/**
* @dev Adds two int256 variables and fails on overflow.
*/
function add(int256 a, int256 b)
internal
pure
returns (int256)
{
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
/**
* @dev Converts to absolute value, and fails on overflow.
*/
function abs(int256 a)
internal
pure
returns (int256)
{
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
}
/**
* @title uFragments ERC20 token
* @dev This is part of an implementation of the uFragments Ideal Money protocol.
* uFragments is a normal ERC20 token, but its supply can be adjusted by splitting and
* combining tokens proportionally across all wallets.
*
* uFragment balances are internally represented with a hidden denomination, 'gons'.
* We support splitting the currency in expansion and combining the currency on contraction by
* changing the exchange rate between the hidden 'gons' and the public 'fragments'.
*/
contract UFragments is ERC20Detailed, Ownable {
// PLEASE READ BEFORE CHANGING ANY ACCOUNTING OR MATH
// Anytime there is division, there is a risk of numerical instability from rounding errors. In
// order to minimize this risk, we adhere to the following guidelines:
// 1) The conversion rate adopted is the number of gons that equals 1 fragment.
// The inverse rate must not be used--TOTAL_GONS is always the numerator and _totalSupply is
// always the denominator. (i.e. If you want to convert gons to fragments instead of
// multiplying by the inverse rate, you should divide by the normal rate)
// 2) Gon balances converted into Fragments are always rounded down (truncated).
//
// We make the following guarantees:
// - If address 'A' transfers x Fragments to address 'B'. A's resulting external balance will
// be decreased by precisely x Fragments, and B's external balance will be precisely
// increased by x Fragments.
//
// We do not guarantee that the sum of all balances equals the result of calling totalSupply().
// This is because, for any conversion function 'f()' that has non-zero rounding error,
// f(x0) + f(x1) + ... + f(xn) is not always equal to f(x0 + x1 + ... xn).
using SafeMath for uint256;
using SafeMathInt for int256;
event LogRebase(uint256 indexed epoch, uint256 totalSupply);
event LogMonetaryPolicyUpdated(address monetaryPolicy);
// Used for authentication
address public monetaryPolicy;
modifier onlyMonetaryPolicy() {
require(msg.sender == monetaryPolicy);
_;
}
bool private rebasePausedDeprecated;
bool private tokenPausedDeprecated;
modifier validRecipient(address to) {
require(to != address(0x0));
require(to != address(this));
_;
}
uint256 private constant DECIMALS = 9;
uint256 private constant MAX_UINT256 = ~uint256(0);
uint256 private constant INITIAL_FRAGMENTS_SUPPLY = 50 * 10**6 * 10**DECIMALS;
// TOTAL_GONS is a multiple of INITIAL_FRAGMENTS_SUPPLY so that _gonsPerFragment is an integer.
// Use the highest value that fits in a uint256 for max granularity.
uint256 private constant TOTAL_GONS = MAX_UINT256 - (MAX_UINT256 % INITIAL_FRAGMENTS_SUPPLY);
// MAX_SUPPLY = maximum integer < (sqrt(4*TOTAL_GONS + 1) - 1) / 2
uint256 private constant MAX_SUPPLY = ~uint128(0); // (2^128) - 1
uint256 private _totalSupply;
uint256 private _gonsPerFragment;
mapping(address => uint256) private _gonBalances;
// This is denominated in Fragments, because the gons-fragments conversion might change before
// it's fully paid.
mapping (address => mapping (address => uint256)) private _allowedFragments;
/**
* @param monetaryPolicy_ The address of the monetary policy contract to use for authentication.
*/
function setMonetaryPolicy(address monetaryPolicy_)
external
onlyOwner
{
monetaryPolicy = monetaryPolicy_;
emit LogMonetaryPolicyUpdated(monetaryPolicy_);
}
/**
* @dev Notifies Fragments contract about a new rebase cycle.
* @param supplyDelta The number of new fragment tokens to add into circulation via expansion.
* @return The total number of fragments after the supply adjustment.
*/
function rebase(uint256 epoch, int256 supplyDelta)
external
onlyMonetaryPolicy
returns (uint256)
{
if (supplyDelta == 0) {
emit LogRebase(epoch, _totalSupply);
return _totalSupply;
}
if (supplyDelta < 0) {
_totalSupply = _totalSupply.sub(uint256(supplyDelta.abs()));
} else {
_totalSupply = _totalSupply.add(uint256(supplyDelta));
}
if (_totalSupply > MAX_SUPPLY) {
_totalSupply = MAX_SUPPLY;
}
_gonsPerFragment = TOTAL_GONS.div(_totalSupply);
// From this point forward, _gonsPerFragment is taken as the source of truth.
// We recalculate a new _totalSupply to be in agreement with the _gonsPerFragment
// conversion rate.
// This means our applied supplyDelta can deviate from the requested supplyDelta,
// but this deviation is guaranteed to be < (_totalSupply^2)/(TOTAL_GONS - _totalSupply).
//
// In the case of _totalSupply <= MAX_UINT128 (our current supply cap), this
// deviation is guaranteed to be < 1, so we can omit this step. If the supply cap is
// ever increased, it must be re-included.
// _totalSupply = TOTAL_GONS.div(_gonsPerFragment)
emit LogRebase(epoch, _totalSupply);
return _totalSupply;
}
function initialize(address owner_)
public
initializer
{
ERC20Detailed.initialize("AmpleForthGold", "AAU", uint8(DECIMALS));
Ownable.initialize(owner_);
rebasePausedDeprecated = false;
tokenPausedDeprecated = false;
_totalSupply = INITIAL_FRAGMENTS_SUPPLY;
_gonBalances[owner_] = TOTAL_GONS;
_gonsPerFragment = TOTAL_GONS.div(_totalSupply);
emit Transfer(address(0x0), owner_, _totalSupply);
}
/**
* @return The total number of fragments.
*/
function totalSupply()
public
view
returns (uint256)
{
return _totalSupply;
}
/**
* @param who The address to query.
* @return The balance of the specified address.
*/
function balanceOf(address who)
public
view
returns (uint256)
{
return _gonBalances[who].div(_gonsPerFragment);
}
/**
* @dev Transfer tokens to a specified address.
* @param to The address to transfer to.
* @param value The amount to be transferred.
* @return True on success, false otherwise.
*/
function transfer(address to, uint256 value)
public
validRecipient(to)
returns (bool)
{
uint256 gonValue = value.mul(_gonsPerFragment);
_gonBalances[msg.sender] = _gonBalances[msg.sender].sub(gonValue);
_gonBalances[to] = _gonBalances[to].add(gonValue);
emit Transfer(msg.sender, to, value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner has allowed to a spender.
* @param owner_ The address which owns the funds.
* @param spender The address which will spend the funds.
* @return The number of tokens still available for the spender.
*/
function allowance(address owner_, address spender)
public
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
/**
* @dev Transfer tokens from one address to another.
* @param from The address you want to send tokens from.
* @param to The address you want to transfer to.
* @param value The amount of tokens to be transferred.
*/
function transferFrom(address from, address to, uint256 value)
public
validRecipient(to)
returns (bool)
{
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
uint256 gonValue = value.mul(_gonsPerFragment);
_gonBalances[from] = _gonBalances[from].sub(gonValue);
_gonBalances[to] = _gonBalances[to].add(gonValue);
emit Transfer(from, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of
* msg.sender. This method is included for ERC20 compatibility.
* increaseAllowance and decreaseAllowance should be used instead.
* Changing an allowance with this method brings the risk that someone may transfer both
* the old and the new allowance - if they are both greater than zero - if a transfer
* transaction is mined before the later approve() call is mined.
*
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value)
public
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner has allowed to a spender.
* This method should be used instead of approve() to avoid the double approval vulnerability
* described above.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner has allowed to a spender.
*
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
}
//import "./RebaseDelta.sol";
//pragma solidity >=0.4.24;
//import '@uniswap/v2-periphery/contracts/libraries/SafeMath.sol';
// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)
library RB_SafeMath {
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x, 'ds-math-add-overflow');
}
function sub(uint x, uint y) internal pure returns (uint z) {
require((z = x - y) <= x, 'ds-math-sub-underflow');
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
}
function div(uint x, uint y) internal pure returns (uint) {
require(y != 0);
return x / y;
}
}
library RB_UnsignedSafeMath {
function add(int x, int y) internal pure returns (int z) {
require((z = x + y) >= x, 'ds-math-add-overflow');
}
function sub(int x, int y) internal pure returns (int z) {
require((z = x - y) <= x, 'ds-math-sub-underflow');
}
function mul(int x, int y) internal pure returns (int z) {
require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
}
function div(int x, int y) internal pure returns (int) {
require(y != 0);
return x / y;
}
}
//import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol';
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes /* calldata */ data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
/** Calculates the Delta for a rebase based on the ratio
*** between the price of two different token pairs on
*** Uniswap
***
*** - minimalist design
*** - low gas design
*** - free for anyone to call.
***
****/
contract RebaseDelta {
using RB_SafeMath for uint256;
using RB_UnsignedSafeMath for int256;
uint256 private constant PRICE_PRECISION = 10**9;
function getPrice(IUniswapV2Pair pair_, bool flip_)
public
view
returns (uint256)
{
require(address(pair_) != address(0));
(uint256 reserves0, uint256 reserves1, ) = pair_.getReserves();
if (flip_) {
(reserves0, reserves1) = (reserves1, reserves0);
}
// reserves0 = base (probably ETH/WETH)
// reserves1 = token of interest (maybe ampleforthgold or paxusgold etc)
// multiply to equate decimals, multiply up to PRICE_PRECISION
uint256 price = (reserves1.mul(PRICE_PRECISION)).div(reserves0);
return price;
}
// calculates the supply delta for moving the price of token X to the price
// of token Y (with the understanding that they are both priced in a common
// tokens value, i.e. WETH).
function calculate(IUniswapV2Pair X_,
bool flipX_,
uint256 decimalsX_,
uint256 SupplyX_,
IUniswapV2Pair Y_,
bool flipY_,
uint256 decimalsY_)
public
view
returns (int256)
{
uint256 px = getPrice(X_, flipX_);
require(px != uint256(0));
uint256 py = getPrice(Y_, flipY_);
require(py != uint256(0));
uint256 targetSupply = (SupplyX_.mul(py)).div(px);
// adust for decimals
if (decimalsX_ == decimalsY_) {
// do nothing
}
else if (decimalsX_ > decimalsY_) {
uint256 ddg = (10**decimalsX_).div(10**decimalsY_);
require (ddg != uint256(0));
targetSupply = targetSupply.mul(ddg);
}
else {
uint256 ddl = (10**decimalsY_).div(10**decimalsX_);
require (ddl != uint256(0));
targetSupply = targetSupply.div(ddl);
}
int256 delta = int256(SupplyX_).sub(int256(targetSupply));
return delta;
}
}
contract IRebaseCalc {
function rebase() external returns (uint256);
}
/**
* @title Orchestrator
* @notice The orchestrator is the main entry point for rebase operations. It coordinates the rebase
* actions with external consumers (price oracles) and provides timing / access control for when a
* rebase occurs.
*
* Orchestrator is based on Ampleforth.org implmentation with modifications by the AmpleForthgold team.
* It is a merge and modification of the Orchestrator.sol and UFragmentsPolicy.sol from the original
* Ampleforth project. Thanks to the Ampleforth.org team!
*
* Code ideas also come from the RMPL.IO (RAmple Project), YAM team and BASED team.
* Thanks to the all whoose ideas we stole!
*
* We have simplifed the design to lower the gas fees. In some places we have removed things that were
* "nice to have" because of the cost of GAS. Specifically we have lowered the number of events and
* hard coded things that we know are going to be constant (such as not looking up a uniswap pair,
* we just pass the pair pointer into the contract). This was done to save GAS and lower the execution
* cost of the contract.
*
* The Price used for rebase calculations shall be sourced from Uniswap (on chain liquidity pools).
*
* Relying on price Oracles (either on chain or off chain) will never be perfect. Oracles go bad,
* others come good. At present we will use liquidity pools on uniswap to provide the oracles
* for pricing. However those oracles may go bad and need to be replaced. We think that oracle
* failure in the short term is unlikly, but not impossible. In the long term it may be likely
* to see oracle failure. Due to this the contract 'owners' (the AmpleForthGold team) shall
* have an 'off switch' in the code to disable and override rebase operations. At some point
* it may be needed...but we hope it is not needed.
*
*/
contract Orchestrator is Ownable, IRebaseCalc {
using SafeMath for uint16;
using SafeMath for uint256;
using SafeMathInt for int256;
// The ERC20 Token for ampleforthgold
UFragments public afgToken = UFragments(0x8E54954B3Bbc07DbE3349AEBb6EAFf8D91Db5734);
// oracle configuration - see RebaseDelta.sol for details.
RebaseDelta public oracle = RebaseDelta(0x7d45Fd7e1d1aFD48DA7f10093d8d1ee5deA8cf08);
IUniswapV2Pair public tokenPairX = IUniswapV2Pair(0x2d0C51C1282c31d71F035E15770f3214e20F6150);
IUniswapV2Pair public tokenPairY = IUniswapV2Pair(0x9C4Fe5FFD9A9fC5678cFBd93Aa2D4FD684b67C4C);
bool public flipX = true;
bool public flipY = true;
uint8 public decimalsX = 9;
uint8 public decimalsY = 18;
// hard coded sync calls.
IUniswapV2Pair AMPL_AAU_Pair = IUniswapV2Pair(0xCdc3D2c8C79091b9b63A70A98716e3b40d1299D4);
IUniswapV2Pair PAXG_AAU_Pair = IUniswapV2Pair(0x225C01e8C5310714bCb8e8cEF68D5814348EFDEb);
IUniswapV2Pair PMGT_AAU_Pair = IUniswapV2Pair(0x15f7B9a0c5FE2F33D3dbDf1bCdB1F6dC7bED10B1);
// The timestamp of the last rebase event generated from this contract.
// Technically another contract cauld also cause a rebase event,
// so this cannot be relied on globally. uint64 should not clock
// over in forever.
uint64 public lastRebase = uint64(1603991760);
// The number of rebase cycles since inception. Why the original
// designers did not keep this inside uFragments is a question
// that really deservers an answer? We can use a uint16 cause we
// will be about 179 years old before it clocks over.
uint16 public epoch = 365;
// Transactions are used to generate call back to DEXs that need to be
// informed about rebase events. Specifically with uniswap the function
// on the IUniswapV2Pair.sync() needs to be called so that the
// liquidity pool can reset it reserves to the correct value.
// ...Stable transaction ordering is not guaranteed.
struct Transaction {
bool enabled;
address destination;
bytes data;
}
event TransactionFailed(address indexed destination, uint index, bytes data);
Transaction[] public transactions;
/**
* Just initializes the base class.
*/
constructor()
public {
Ownable.initialize(msg.sender);
}
/**
* @notice Owner entry point to initiate a rebase operation.
* @param supplyDelta the delta as passed to afgToken.rebase.
* (the delta needs to be calulated off chain or by the
* calling contract).
* @param disable_ passing true will disable the ability of
* users (other then the owner) to cause a rebase.
*
* The owner can always generate a rebase operation. At some point in the future
* the owners keys shall be burnt. However at this time (and until we are certain
* everthing is working as it should) the owners shall keep their keys.
* The ability for the owners to generate a rebase of any value at any time is a
* carry over from the original ampleforth project. This function is just a little
* more direct.
*/
function ownerForcedRebase(int256 supplyDelta, bool disable_)
external
onlyOwner
{
/* If lastrebase is set to 0 then *users* cannot cause a rebase.
* This should allow the owner to disable the auto-rebase operations if
* things go wrong (see things go wrong above). */
if (disable_) {
lastRebase = uint64(0);
} else {
lastRebase = uint64(block.timestamp);
}
afgToken.rebase(epoch++, supplyDelta);
popTransactionList();
}
/**
* @notice Main entry point to initiate a rebase operation.
* On success returns the new supply value.
*/
function rebase()
external
returns (uint256)
{
// we require at least 1 owner rebase event prior to being enabled!
if (lastRebase == uint64(0)) {
return uint256(0);
}
// at least 24 hours shall have passed since the last rebase event.
if (lastRebase + 1 days > uint64(block.timestamp)) {
return uint256(0);
}
// if more then 24 hours have passed then allow a rebase from anyone
// willing to pay the GAS.
return internal_rebase();
}
/**
* @notice Internal entry point to initiate a rebase operation.
* If we get here then a rebase call to the erc20 token
* will occur.
*
* returns the new supply value.
*/
function internal_rebase()
private
returns(uint256)
{
lastRebase = uint64(block.timestamp);
uint256 z = afgToken.rebase(epoch++, calculateRebaseDelta(true));
popTransactionList();
return z;
}
/**
* @notice Configures the oracle & information passed to the oracle
* to calculate the rebase. See RebaseDelta for definition
* of params.
*
* Initially tokenPairX is the uniswap pair for AAU/WETH
* and tokenPairY is the uniswap pair for PAXG/WETH.
* These addresses can be verified on etherscan.io.
*/
function configureOracle(IUniswapV2Pair tokenPairX_,
bool flipX_,
uint8 decimalsX_,
IUniswapV2Pair tokenPairY_,
bool flipY_,
uint8 decimalsY_,
RebaseDelta oracle_)
external
onlyOwner
{
tokenPairX = tokenPairX_;
flipX = flipX_;
decimalsX = decimalsX_;
tokenPairY = tokenPairY_;
flipY = flipY_;
decimalsY = decimalsY_;
oracle = oracle_;
}
/**
* @notice tries to calculate a rebase based on the configured oracle info.
*
* @param limited_ passing true will limit the rebase based on the 5% rule.
*/
function calculateRebaseDelta(bool limited_)
public
view
returns (int256)
{
require (afgToken != UFragments(0));
require (oracle != RebaseDelta(0));
require (tokenPairX != IUniswapV2Pair(0));
require (tokenPairY != IUniswapV2Pair(0));
require (decimalsX != uint8(0));
require (decimalsY != uint8(0));
uint256 supply = afgToken.totalSupply();
int256 delta = - oracle.calculate(
tokenPairX,
flipX,
decimalsX,
supply,
tokenPairY,
flipY,
decimalsY);
if (!limited_) {
// Unlimited (brutal) rebase.
return delta;
}
if (delta == int256(0)) {
// no rebase needed!
return int256(0);
}
/** 5% rules:
* (1) If the price is in the +-5% range do not rebase at all. This
* allows the market to fix the price to within a 10% range.
* (2) If the price is within +-10% range then only rebase by 1%.
* (3) If the price is more then +-10% then the change shall be half the
* delta. i.e. if the price diff is -28% then the change will be -14%.
*/
int256 supply5p = int256(supply.div(uint256(20))); // 5% == 5/100 == 1/20
if (delta < int256(0)) {
if (-delta < supply5p) {
return int256(0); // no rebase: 5% rule (1)
}
if (-delta < supply5p.mul(int256(2))) {
return (-supply5p).div(int256(5)); // -1% rebase
}
} else {
if (delta < supply5p) {
return int256(0); // no rebase: 5% rule (1)
}
if (delta < supply5p.mul(int256(2))) {
return supply5p.div(int256(5)); // +1% rebase
}
}
return (delta.div(2)); // half delta rebase
}
//===TRANSACTION FUNCTIONALITY (mostly identical to original Ampleforth implementation)
/* generates callbacks after a rebase */
function popTransactionList()
private
{
// we are getting an AAU price feed from these uniswap pairs, thus when the rebase occurs
// we need to ask it to rebase the AAU tokens in the pair. We always know this needs
// to be done, so no use making a transcation for it.
tokenPairX.sync();
AMPL_AAU_Pair.sync();
PMGT_AAU_Pair.sync();
PAXG_AAU_Pair.sync();
// iterate thru other interested parties and generate a call to update their
// contracts.
for (uint i = 0; i < transactions.length; i++) {
Transaction storage t = transactions[i];
if (t.enabled) {
bool result =
externalCall(t.destination, t.data);
if (!result) {
emit TransactionFailed(t.destination, i, t.data);
revert("Transaction Failed");
}
}
}
}
/**
* @notice Adds a transaction that gets called for a downstream receiver of rebases
* @param destination Address of contract destination
* @param data Transaction data payload
*/
function addTransaction(address destination, bytes data)
external
onlyOwner
{
transactions.push(Transaction({
enabled: true,
destination: destination,
data: data
}));
}
/**
* @param index Index of transaction to remove.
* Transaction ordering may have changed since adding.
*/
function removeTransaction(uint index)
external
onlyOwner
{
require(index < transactions.length, "index out of bounds");
if (index < transactions.length - 1) {
transactions[index] = transactions[transactions.length - 1];
}
transactions.length--;
}
/**
* @param index Index of transaction. Transaction ordering may have changed since adding.
* @param enabled True for enabled, false for disabled.
*/
function setTransactionEnabled(uint index, bool enabled)
external
onlyOwner
{
require(index < transactions.length, "index must be in range of stored tx list");
transactions[index].enabled = enabled;
}
/**
* @return Number of transactions, both enabled and disabled, in transactions list.
*/
function transactionsSize()
external
view
returns (uint256)
{
return transactions.length;
}
/**
* @dev wrapper to call the encoded transactions on downstream consumers.
* @param destination Address of destination contract.
* @param data The encoded data payload.
* @return True on success
*/
function externalCall(address destination, bytes data)
internal
returns (bool)
{
bool result;
assembly { // solhint-disable-line no-inline-assembly
// "Allocate" memory for output
// (0x40 is where "free memory" pointer is stored by convention)
let outputAddress := mload(0x40)
// First 32 bytes are the padded length of data, so exclude that
let dataAddress := add(data, 32)
result := call(
// 34710 is the value that solidity is currently emitting
// It includes callGas (700) + callVeryLow (3, to pay for SUB)
// + callValueTransferGas (9000) + callNewAccountGas
// (25000, in case the destination address does not exist and needs creating)
sub(gas, 34710),
destination,
0, // transfer value in wei
dataAddress,
mload(data), // Size of the input, in bytes. Stored in position 0 of the array.
outputAddress,
0 // Output is ignored, therefore the output size is zero
)
}
return result;
}
}
|
generates callbacks after a rebase */ we are getting an AAU price feed from these uniswap pairs, thus when the rebase occurs we need to ask it to rebase the AAU tokens in the pair. We always know this needs to be done, so no use making a transcation for it. iterate thru other interested parties and generate a call to update their contracts.
|
function popTransactionList()
private
{
tokenPairX.sync();
AMPL_AAU_Pair.sync();
PMGT_AAU_Pair.sync();
PAXG_AAU_Pair.sync();
for (uint i = 0; i < transactions.length; i++) {
Transaction storage t = transactions[i];
if (t.enabled) {
bool result =
externalCall(t.destination, t.data);
if (!result) {
emit TransactionFailed(t.destination, i, t.data);
revert("Transaction Failed");
}
}
}
}
| 12,051,335 |
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-100,
-100,
-100,
-100,
-100,
-100,
-100,
-100,
-100,
-100,
-100,
-100
] |
./full_match/3/0x7E56a2E586d46d59fA300e40Ba5fc191eFb522Fe/sources/browser/timelock.sol
|
It’s necessary to add an empty first member and let's add the founder, to save a step later
|
) payable public {
if (founder != address(0)) owner = founder;
if (minimumAmountOfMinutes !=0) minimumTime = minimumAmountOfMinutes;
addMember(address(0), '');
addMember(owner, 'founder');
changeMembers(initialMembers, true);
}
| 8,283,544 |
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./partial_match/1/0x6B0B234fB2f380309D47A7E9391E29E9a179395a/sources/src/v0.8/dev/automation/2_1/AutomationRegistrar2_1.sol
|
* @dev Reverts if the actual amount passed does not match the expected amount @param expected amount that should match the actual amount @param data bytes/ decode register function arguments to get actual amount
|
modifier isActualAmount(uint256 expected, bytes calldata data) {
(, , , , , , , , , uint96 amount, ) = abi.decode(
data[4:],
(string, bytes, address, uint32, address, uint8, bytes, bytes, bytes, uint96, address)
);
if (expected != amount) {
revert AmountMismatch();
}
_;
}
| 3,963,095 |
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/**
*Submitted for verification at Etherscan.io on 2021-10-15
*/
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol
pragma solidity ^0.4.24;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* See https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address _who) public view returns (uint256);
function transfer(address _to, uint256 _value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
// File: openzeppelin-solidity/contracts/math/SafeMath.sol
pragma solidity ^0.4.24;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
// Gas optimization: this is cheaper than asserting 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (_a == 0) {
return 0;
}
c = _a * _b;
assert(c / _a == _b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
// assert(_b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = _a / _b;
// assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold
return _a / _b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
assert(_b <= _a);
return _a - _b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 _a, uint256 _b) internal pure returns (uint256 c) {
c = _a + _b;
assert(c >= _a);
return c;
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol
pragma solidity ^0.4.24;
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) internal balances;
uint256 internal totalSupply_;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_value <= balances[msg.sender]);
require(_to != address(0));
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/BurnableToken.sol
pragma solidity ^0.4.24;
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
function _burn(address _who, uint256 _value) internal {
require(_value <= balances[_who]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which *should* be an assertion failure
balances[_who] = balances[_who].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(_who, _value);
emit Transfer(_who, address(0), _value);
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.4.24;
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address _owner, address _spender)
public view returns (uint256);
function transferFrom(address _from, address _to, uint256 _value)
public returns (bool);
function approve(address _spender, uint256 _value) public returns (bool);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
// File: openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol
pragma solidity ^0.4.24;
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/issues/20
* Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address _from,
address _to,
uint256 _value
)
public
returns (bool)
{
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
require(_to != address(0));
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address _owner,
address _spender
)
public
view
returns (uint256)
{
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(
address _spender,
uint256 _addedValue
)
public
returns (bool)
{
allowed[msg.sender][_spender] = (
allowed[msg.sender][_spender].add(_addedValue));
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(
address _spender,
uint256 _subtractedValue
)
public
returns (bool)
{
uint256 oldValue = allowed[msg.sender][_spender];
if (_subtractedValue >= oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
// File: openzeppelin-solidity/contracts/ownership/Ownable.sol
pragma solidity ^0.4.24;
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function transferOwnership(address _newOwner) public onlyOwner {
_transferOwnership(_newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function _transferOwnership(address _newOwner) internal {
require(_newOwner != address(0));
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/MintableToken.sol
pragma solidity ^0.4.24;
/**
* @title Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/
contract MintableToken is StandardToken, Ownable {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier hasMintPermission() {
require(msg.sender == owner);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(
address _to,
uint256 _amount
)
public
hasMintPermission
canMint
returns (bool)
{
totalSupply_ = totalSupply_.add(_amount);
balances[_to] = balances[_to].add(_amount);
emit Mint(_to, _amount);
emit Transfer(address(0), _to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() public onlyOwner canMint returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/DetailedERC20.sol
pragma solidity ^0.4.24;
/**
* @title DetailedERC20 token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/
contract DetailedERC20 is ERC20 {
string public name;
string public symbol;
uint8 public decimals;
constructor(string _name, string _symbol, uint8 _decimals) public {
name = _name;
symbol = _symbol;
decimals = _decimals;
}
}
// File: openzeppelin-solidity/contracts/AddressUtils.sol
pragma solidity ^0.4.24;
/**
* Utility library of inline functions on addresses
*/
library AddressUtils {
/**
* Returns whether the target address is a contract
* @dev This function will return false if invoked during the constructor of a contract,
* as the code is not actually created until after the constructor finishes.
* @param _addr address to check
* @return whether the target address is a contract
*/
function isContract(address _addr) internal view returns (bool) {
uint256 size;
// XXX Currently there is no better way to check if there is a contract in an address
// than to check the size of the code at that address.
// See https://ethereum.stackexchange.com/a/14016/36603
// for more details about how this works.
// TODO Check this again before the Serenity release, because all addresses will be
// contracts then.
// solium-disable-next-line security/no-inline-assembly
assembly { size := extcodesize(_addr) }
return size > 0;
}
}
// File: contracts/interfaces/ERC677.sol
pragma solidity 0.4.24;
contract ERC677 is ERC20 {
event Transfer(address indexed from, address indexed to, uint256 value, bytes data);
function transferAndCall(address, uint256, bytes) external returns (bool);
function increaseAllowance(address spender, uint256 addedValue) public returns (bool);
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool);
}
contract LegacyERC20 {
function transfer(address _spender, uint256 _value) public; // returns (bool);
function transferFrom(address _owner, address _spender, uint256 _value) public; // returns (bool);
}
// File: contracts/interfaces/IBurnableMintableERC677Token.sol
pragma solidity 0.4.24;
contract IBurnableMintableERC677Token is ERC677 {
function mint(address _to, uint256 _amount) public returns (bool);
function burn(uint256 _value) public;
function claimTokens(address _token, address _to) external;
}
// File: contracts/upgradeable_contracts/Sacrifice.sol
pragma solidity 0.4.24;
contract Sacrifice {
constructor(address _recipient) public payable {
selfdestruct(_recipient);
}
}
// File: contracts/libraries/Address.sol
pragma solidity 0.4.24;
/**
* @title Address
* @dev Helper methods for Address type.
*/
library Address {
/**
* @dev Try to send native tokens to the address. If it fails, it will force the transfer by creating a selfdestruct contract
* @param _receiver address that will receive the native tokens
* @param _value the amount of native tokens to send
*/
function safeSendValue(address _receiver, uint256 _value) internal {
if (!_receiver.send(_value)) {
(new Sacrifice).value(_value)(_receiver);
}
}
}
// File: contracts/libraries/SafeERC20.sol
pragma solidity 0.4.24;
/**
* @title SafeERC20
* @dev Helper methods for safe token transfers.
* Functions perform additional checks to be sure that token transfer really happened.
*/
library SafeERC20 {
using SafeMath for uint256;
/**
* @dev Same as ERC20.transfer(address,uint256) but with extra consistency checks.
* @param _token address of the token contract
* @param _to address of the receiver
* @param _value amount of tokens to send
*/
function safeTransfer(address _token, address _to, uint256 _value) internal {
LegacyERC20(_token).transfer(_to, _value);
assembly {
if returndatasize {
returndatacopy(0, 0, 32)
if iszero(mload(0)) {
revert(0, 0)
}
}
}
}
/**
* @dev Same as ERC20.transferFrom(address,address,uint256) but with extra consistency checks.
* @param _token address of the token contract
* @param _from address of the sender
* @param _value amount of tokens to send
*/
function safeTransferFrom(address _token, address _from, uint256 _value) internal {
LegacyERC20(_token).transferFrom(_from, address(this), _value);
assembly {
if returndatasize {
returndatacopy(0, 0, 32)
if iszero(mload(0)) {
revert(0, 0)
}
}
}
}
}
// File: contracts/upgradeable_contracts/Claimable.sol
pragma solidity 0.4.24;
/**
* @title Claimable
* @dev Implementation of the claiming utils that can be useful for withdrawing accidentally sent tokens that are not used in bridge operations.
*/
contract Claimable {
using SafeERC20 for address;
/**
* Throws if a given address is equal to address(0)
*/
modifier validAddress(address _to) {
require(_to != address(0));
/* solcov ignore next */
_;
}
/**
* @dev Withdraws the erc20 tokens or native coins from this contract.
* Caller should additionally check that the claimed token is not a part of bridge operations (i.e. that token != erc20token()).
* @param _token address of the claimed token or address(0) for native coins.
* @param _to address of the tokens/coins receiver.
*/
function claimValues(address _token, address _to) internal validAddress(_to) {
if (_token == address(0)) {
claimNativeCoins(_to);
} else {
claimErc20Tokens(_token, _to);
}
}
/**
* @dev Internal function for withdrawing all native coins from the contract.
* @param _to address of the coins receiver.
*/
function claimNativeCoins(address _to) internal {
uint256 value = address(this).balance;
Address.safeSendValue(_to, value);
}
/**
* @dev Internal function for withdrawing all tokens of ssome particular ERC20 contract from this contract.
* @param _token address of the claimed ERC20 token.
* @param _to address of the tokens receiver.
*/
function claimErc20Tokens(address _token, address _to) internal {
ERC20Basic token = ERC20Basic(_token);
uint256 balance = token.balanceOf(this);
_token.safeTransfer(_to, balance);
}
}
// File: contracts/ERC677BridgeToken.sol
pragma solidity 0.4.24;
/**
* @title ERC677BridgeToken
* @dev The basic implementation of a bridgeable ERC677-compatible token
*/
contract ERC677BridgeToken is IBurnableMintableERC677Token, DetailedERC20, BurnableToken, MintableToken, Claimable {
bytes4 internal constant ON_TOKEN_TRANSFER = 0xa4c0ed36; // onTokenTransfer(address,uint256,bytes)
address internal bridgeContractAddr;
constructor(string _name, string _symbol, uint8 _decimals) public DetailedERC20(_name, _symbol, _decimals) {
// solhint-disable-previous-line no-empty-blocks
}
function bridgeContract() external view returns (address) {
return bridgeContractAddr;
}
function setBridgeContract(address _bridgeContract) external onlyOwner {
require(AddressUtils.isContract(_bridgeContract));
bridgeContractAddr = _bridgeContract;
}
modifier validRecipient(address _recipient) {
require(_recipient != address(0) && _recipient != address(this));
/* solcov ignore next */
_;
}
function transferAndCall(address _to, uint256 _value, bytes _data) external validRecipient(_to) returns (bool) {
require(superTransfer(_to, _value));
emit Transfer(msg.sender, _to, _value, _data);
if (AddressUtils.isContract(_to)) {
require(contractFallback(msg.sender, _to, _value, _data));
}
return true;
}
function getTokenInterfacesVersion() external pure returns (uint64 major, uint64 minor, uint64 patch) {
return (2, 5, 0);
}
function superTransfer(address _to, uint256 _value) internal returns (bool) {
return super.transfer(_to, _value);
}
function transfer(address _to, uint256 _value) public returns (bool) {
require(superTransfer(_to, _value));
callAfterTransfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(super.transferFrom(_from, _to, _value));
callAfterTransfer(_from, _to, _value);
return true;
}
/**
* @dev Internal function that calls onTokenTransfer callback on the receiver after the successful transfer.
* Since it is not present in the original ERC677 standard, the callback is only called on the bridge contract,
* in order to simplify UX. In other cases, this token complies with the ERC677/ERC20 standard.
* @param _from tokens sender address.
* @param _to tokens receiver address.
* @param _value amount of sent tokens.
*/
function callAfterTransfer(address _from, address _to, uint256 _value) internal {
if (isBridge(_to)) {
require(contractFallback(_from, _to, _value, new bytes(0)));
}
}
function isBridge(address _address) public view returns (bool) {
return _address == bridgeContractAddr;
}
/**
* @dev call onTokenTransfer fallback on the token recipient contract
* @param _from tokens sender
* @param _to tokens recipient
* @param _value amount of tokens that was sent
* @param _data set of extra bytes that can be passed to the recipient
*/
function contractFallback(address _from, address _to, uint256 _value, bytes _data) private returns (bool) {
return _to.call(abi.encodeWithSelector(ON_TOKEN_TRANSFER, _from, _value, _data));
}
function finishMinting() public returns (bool) {
revert();
}
function renounceOwnership() public onlyOwner {
revert();
}
/**
* @dev Withdraws the erc20 tokens or native coins from this contract.
* @param _token address of the claimed token or address(0) for native coins.
* @param _to address of the tokens/coins receiver.
*/
function claimTokens(address _token, address _to) external onlyOwner {
claimValues(_token, _to);
}
function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
return super.increaseApproval(spender, addedValue);
}
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
return super.decreaseApproval(spender, subtractedValue);
}
}
// File: contracts/PermittableToken.sol
pragma solidity 0.4.24;
contract PermittableToken is ERC677BridgeToken {
string public constant version = "1";
// EIP712 niceties
bytes32 public DOMAIN_SEPARATOR;
// bytes32 public constant PERMIT_TYPEHASH_LEGACY = keccak256("Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)");
bytes32 public constant PERMIT_TYPEHASH_LEGACY = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;
// bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint256) public nonces;
mapping(address => mapping(address => uint256)) public expirations;
constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _chainId)
public
ERC677BridgeToken(_name, _symbol, _decimals)
{
require(_chainId != 0);
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(_name)),
keccak256(bytes(version)),
_chainId,
address(this)
)
);
}
/// @dev transferFrom in this contract works in a slightly different form than the generic
/// transferFrom function. This contract allows for "unlimited approval".
/// Should the user approve an address for the maximum uint256 value,
/// then that address will have unlimited approval until told otherwise.
/// @param _sender The address of the sender.
/// @param _recipient The address of the recipient.
/// @param _amount The value to transfer.
/// @return Success status.
function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) {
require(_sender != address(0));
require(_recipient != address(0));
balances[_sender] = balances[_sender].sub(_amount);
balances[_recipient] = balances[_recipient].add(_amount);
emit Transfer(_sender, _recipient, _amount);
if (_sender != msg.sender) {
uint256 allowedAmount = allowance(_sender, msg.sender);
if (allowedAmount != uint256(-1)) {
// If allowance is limited, adjust it.
// In this case `transferFrom` works like the generic
allowed[_sender][msg.sender] = allowedAmount.sub(_amount);
emit Approval(_sender, msg.sender, allowed[_sender][msg.sender]);
} else {
// If allowance is unlimited by `permit`, `approve`, or `increaseAllowance`
// function, don't adjust it. But the expiration date must be empty or in the future
require(expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= now);
}
} else {
// If `_sender` is `msg.sender`,
// the function works just like `transfer()`
}
callAfterTransfer(_sender, _recipient, _amount);
return true;
}
/// @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
/// @param _to The address which will spend the funds.
/// @param _value The amount of tokens to be spent.
function approve(address _to, uint256 _value) public returns (bool result) {
_approveAndResetExpirations(msg.sender, _to, _value);
return true;
}
/// @dev Atomically increases the allowance granted to spender by the caller.
/// @param _to The address which will spend the funds.
/// @param _addedValue The amount of tokens to increase the allowance by.
function increaseAllowance(address _to, uint256 _addedValue) public returns (bool result) {
_approveAndResetExpirations(msg.sender, _to, allowed[msg.sender][_to].add(_addedValue));
return true;
}
/// @dev An alias for `transfer` function.
/// @param _to The address of the recipient.
/// @param _amount The value to transfer.
function push(address _to, uint256 _amount) public {
transferFrom(msg.sender, _to, _amount);
}
/// @dev Makes a request to transfer the specified amount
/// from the specified address to the caller's address.
/// @param _from The address of the holder.
/// @param _amount The value to transfer.
function pull(address _from, uint256 _amount) public {
transferFrom(_from, msg.sender, _amount);
}
/// @dev An alias for `transferFrom` function.
/// @param _from The address of the sender.
/// @param _to The address of the recipient.
/// @param _amount The value to transfer.
function move(address _from, address _to, uint256 _amount) public {
transferFrom(_from, _to, _amount);
}
/// @dev Allows to spend holder's unlimited amount by the specified spender.
/// The function can be called by anyone, but requires having allowance parameters
/// signed by the holder according to EIP712.
/// @param _holder The holder's address.
/// @param _spender The spender's address.
/// @param _nonce The nonce taken from `nonces(_holder)` public getter.
/// @param _expiry The allowance expiration date (unix timestamp in UTC).
/// Can be zero for no expiration. Forced to zero if `_allowed` is `false`.
/// Note that timestamps are not precise, malicious miner/validator can manipulate them to some extend.
/// Assume that there can be a 900 seconds time delta between the desired timestamp and the actual expiration.
/// @param _allowed True to enable unlimited allowance for the spender by the holder. False to disable.
/// @param _v A final byte of signature (ECDSA component).
/// @param _r The first 32 bytes of signature (ECDSA component).
/// @param _s The second 32 bytes of signature (ECDSA component).
function permit(
address _holder,
address _spender,
uint256 _nonce,
uint256 _expiry,
bool _allowed,
uint8 _v,
bytes32 _r,
bytes32 _s
) external {
require(_expiry == 0 || now <= _expiry);
bytes32 digest = _digest(abi.encode(PERMIT_TYPEHASH_LEGACY, _holder, _spender, _nonce, _expiry, _allowed));
require(_holder == _recover(digest, _v, _r, _s));
require(_nonce == nonces[_holder]++);
uint256 amount = _allowed ? uint256(-1) : 0;
expirations[_holder][_spender] = _allowed ? _expiry : 0;
_approve(_holder, _spender, amount);
}
/** @dev Allows to spend holder's unlimited amount by the specified spender according to EIP2612.
* The function can be called by anyone, but requires having allowance parameters
* signed by the holder according to EIP712.
* @param _holder The holder's address.
* @param _spender The spender's address.
* @param _value Allowance value to set as a result of the call.
* @param _deadline The deadline timestamp to call the permit function. Must be a timestamp in the future.
* Note that timestamps are not precise, malicious miner/validator can manipulate them to some extend.
* Assume that there can be a 900 seconds time delta between the desired timestamp and the actual expiration.
* @param _v A final byte of signature (ECDSA component).
* @param _r The first 32 bytes of signature (ECDSA component).
* @param _s The second 32 bytes of signature (ECDSA component).
*/
function permit(
address _holder,
address _spender,
uint256 _value,
uint256 _deadline,
uint8 _v,
bytes32 _r,
bytes32 _s
) external {
require(now <= _deadline);
uint256 nonce = nonces[_holder]++;
bytes32 digest = _digest(abi.encode(PERMIT_TYPEHASH, _holder, _spender, _value, nonce, _deadline));
require(_holder == _recover(digest, _v, _r, _s));
_approveAndResetExpirations(_holder, _spender, _value);
}
/**
* @dev Sets a new allowance value for the given owner and spender addresses.
* Resets expiration timestamp in case of unlimited approval.
* @param _owner address tokens holder.
* @param _spender address of tokens spender.
* @param _amount amount of approved tokens.
*/
function _approveAndResetExpirations(address _owner, address _spender, uint256 _amount) internal {
_approve(_owner, _spender, _amount);
// it is not necessary to reset _expirations in other cases, since it is only used together with infinite allowance
if (_amount == uint256(-1)) {
delete expirations[_owner][_spender];
}
}
/**
* @dev Internal function for issuing an allowance.
* @param _owner address of the tokens owner.
* @param _spender address of the approved tokens spender.
* @param _amount amount of the approved tokens.
*/
function _approve(address _owner, address _spender, uint256 _amount) internal {
require(_owner != address(0), "ERC20: approve from the zero address");
require(_spender != address(0), "ERC20: approve to the zero address");
allowed[_owner][_spender] = _amount;
emit Approval(_owner, _spender, _amount);
}
/**
* @dev Calculates the message digest for encoded EIP712 typed struct.
* @param _typedStruct encoded payload.
*/
function _digest(bytes memory _typedStruct) internal view returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, keccak256(_typedStruct)));
}
/**
* @dev Derives the signer address for the given message digest and ECDSA signature params.
* @param _digest signed message digest.
* @param _v a final byte of signature (ECDSA component).
* @param _r the first 32 bytes of the signature (ECDSA component).
* @param _s the second 32 bytes of the signature (ECDSA component).
*/
function _recover(bytes32 _digest, uint8 _v, bytes32 _r, bytes32 _s) internal pure returns (address) {
require(_v == 27 || _v == 28, "ECDSA: invalid signature 'v' value");
require(
uint256(_s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0,
"ECDSA: invalid signature 's' value"
);
address signer = ecrecover(_digest, _v, _r, _s);
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
}
|
EIP712 niceties bytes32 public constant PERMIT_TYPEHASH_LEGACY = keccak256("Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)"); bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
|
contract PermittableToken is ERC677BridgeToken {
string public constant version = "1";
bytes32 public DOMAIN_SEPARATOR;
bytes32 public constant PERMIT_TYPEHASH_LEGACY = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint256) public nonces;
mapping(address => mapping(address => uint256)) public expirations;
constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 _chainId)
public
ERC677BridgeToken(_name, _symbol, _decimals)
{
require(_chainId != 0);
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(_name)),
keccak256(bytes(version)),
_chainId,
address(this)
)
);
}
function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) {
require(_sender != address(0));
require(_recipient != address(0));
balances[_sender] = balances[_sender].sub(_amount);
balances[_recipient] = balances[_recipient].add(_amount);
emit Transfer(_sender, _recipient, _amount);
if (_sender != msg.sender) {
uint256 allowedAmount = allowance(_sender, msg.sender);
if (allowedAmount != uint256(-1)) {
allowed[_sender][msg.sender] = allowedAmount.sub(_amount);
emit Approval(_sender, msg.sender, allowed[_sender][msg.sender]);
require(expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= now);
}
callAfterTransfer(_sender, _recipient, _amount);
return true;
}
function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) {
require(_sender != address(0));
require(_recipient != address(0));
balances[_sender] = balances[_sender].sub(_amount);
balances[_recipient] = balances[_recipient].add(_amount);
emit Transfer(_sender, _recipient, _amount);
if (_sender != msg.sender) {
uint256 allowedAmount = allowance(_sender, msg.sender);
if (allowedAmount != uint256(-1)) {
allowed[_sender][msg.sender] = allowedAmount.sub(_amount);
emit Approval(_sender, msg.sender, allowed[_sender][msg.sender]);
require(expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= now);
}
callAfterTransfer(_sender, _recipient, _amount);
return true;
}
function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) {
require(_sender != address(0));
require(_recipient != address(0));
balances[_sender] = balances[_sender].sub(_amount);
balances[_recipient] = balances[_recipient].add(_amount);
emit Transfer(_sender, _recipient, _amount);
if (_sender != msg.sender) {
uint256 allowedAmount = allowance(_sender, msg.sender);
if (allowedAmount != uint256(-1)) {
allowed[_sender][msg.sender] = allowedAmount.sub(_amount);
emit Approval(_sender, msg.sender, allowed[_sender][msg.sender]);
require(expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= now);
}
callAfterTransfer(_sender, _recipient, _amount);
return true;
}
} else {
} else {
}
function approve(address _to, uint256 _value) public returns (bool result) {
_approveAndResetExpirations(msg.sender, _to, _value);
return true;
}
function increaseAllowance(address _to, uint256 _addedValue) public returns (bool result) {
_approveAndResetExpirations(msg.sender, _to, allowed[msg.sender][_to].add(_addedValue));
return true;
}
function push(address _to, uint256 _amount) public {
transferFrom(msg.sender, _to, _amount);
}
function pull(address _from, uint256 _amount) public {
transferFrom(_from, msg.sender, _amount);
}
function move(address _from, address _to, uint256 _amount) public {
transferFrom(_from, _to, _amount);
}
function permit(
address _holder,
address _spender,
uint256 _nonce,
uint256 _expiry,
bool _allowed,
uint8 _v,
bytes32 _r,
bytes32 _s
) external {
require(_expiry == 0 || now <= _expiry);
bytes32 digest = _digest(abi.encode(PERMIT_TYPEHASH_LEGACY, _holder, _spender, _nonce, _expiry, _allowed));
require(_holder == _recover(digest, _v, _r, _s));
require(_nonce == nonces[_holder]++);
uint256 amount = _allowed ? uint256(-1) : 0;
expirations[_holder][_spender] = _allowed ? _expiry : 0;
_approve(_holder, _spender, amount);
}
function permit(
address _holder,
address _spender,
uint256 _value,
uint256 _deadline,
uint8 _v,
bytes32 _r,
bytes32 _s
) external {
require(now <= _deadline);
uint256 nonce = nonces[_holder]++;
bytes32 digest = _digest(abi.encode(PERMIT_TYPEHASH, _holder, _spender, _value, nonce, _deadline));
require(_holder == _recover(digest, _v, _r, _s));
_approveAndResetExpirations(_holder, _spender, _value);
}
function _approveAndResetExpirations(address _owner, address _spender, uint256 _amount) internal {
_approve(_owner, _spender, _amount);
if (_amount == uint256(-1)) {
delete expirations[_owner][_spender];
}
}
function _approveAndResetExpirations(address _owner, address _spender, uint256 _amount) internal {
_approve(_owner, _spender, _amount);
if (_amount == uint256(-1)) {
delete expirations[_owner][_spender];
}
}
function _approve(address _owner, address _spender, uint256 _amount) internal {
require(_owner != address(0), "ERC20: approve from the zero address");
require(_spender != address(0), "ERC20: approve to the zero address");
allowed[_owner][_spender] = _amount;
emit Approval(_owner, _spender, _amount);
}
function _digest(bytes memory _typedStruct) internal view returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, keccak256(_typedStruct)));
}
function _recover(bytes32 _digest, uint8 _v, bytes32 _r, bytes32 _s) internal pure returns (address) {
require(_v == 27 || _v == 28, "ECDSA: invalid signature 'v' value");
require(
uint256(_s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0,
"ECDSA: invalid signature 's' value"
);
address signer = ecrecover(_digest, _v, _r, _s);
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
}
| 6,743,265 |
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2
] |
./full_match/56/0xE40244Ea8B851137e75638702F5F29e1F0963dA2/sources/goerlitest.sol
|
@dev enabled trading, once enabled can't be reversed
|
function enableTrading() external onlyOwner {
tradingActive = true;
lastDistributed = block.timestamp;
}
| 3,240,379 |
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./partial_match/1/0x2E1c3b11e48EEd58DBca71e9298e14875f2988c7/sources/$LIFE.sol
|
Anti-bot and anti-whale mappings and variables exlcude from fees and max transaction amount store addresses that a automatic market maker pairs. Any transfer *to* these addresses could be subject to a maximum transfer amount
|
contract $LIFE is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
address public constant deadAddress = address(0xdead);
bool private swapping;
address public marketingWallet;
address public devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
bool public lpBurnEnabled = true;
uint256 public lpBurnFrequency = 3600 seconds;
uint256 public lastLpBurnTime;
uint256 public manualBurnFrequency = 30 minutes;
uint256 public lastManualLpBurnTime;
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
bool public transferDelayEnabled = true;
uint256 public buyTotalFees;
uint256 public buyMarketingFee;
uint256 public buyLiquidityFee;
uint256 public buyDevFee;
uint256 public sellTotalFees;
uint256 public sellMarketingFee;
uint256 public sellLiquidityFee;
uint256 public sellDevFee;
uint256 public tokensForMarketing;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
mapping(address => bool) private _isExcludedFromFees;
mapping(address => bool) public _isExcludedMaxTransactionAmount;
mapping(address => bool) public automatedMarketMakerPairs;
event UpdateUniswapV2Router(
address indexed newAddress,
address indexed oldAddress
);
event ExcludeFromFees(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event marketingWalletUpdated(
address indexed newWallet,
address indexed oldWallet
);
event devWalletUpdated(
address indexed newWallet,
address indexed oldWallet
);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event AutoNukeLP();
event ManualNukeLP();
constructor() ERC20("Izanami", "$LIFE") {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyMarketingFee = 0;
uint256 _buyLiquidityFee = 0;
uint256 _buyDevFee = 0;
uint256 _sellMarketingFee = 10;
uint256 _sellLiquidityFee = 0;
uint256 _sellDevFee = 10;
uint256 totalSupply = 1_000_000_000 * 1e18;
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
_mint(msg.sender, totalSupply);
}
receive() external payable {}
function enableTrading() external onlyOwner {
tradingActive = true;
swapEnabled = true;
lastLpBurnTime = block.timestamp;
}
function removeLimits() external onlyOwner returns (bool) {
limitsInEffect = false;
return true;
}
function disableTransferDelay() external onlyOwner returns (bool) {
transferDelayEnabled = false;
return true;
}
function updateSwapTokensAtAmount(uint256 newAmount)
external
onlyOwner
returns (bool)
{
require(
newAmount >= (totalSupply() * 1) / 100000,
"Swap amount cannot be lower than 0.001% total supply."
);
require(
newAmount <= (totalSupply() * 5) / 1000,
"Swap amount cannot be higher than 0.5% total supply."
);
swapTokensAtAmount = newAmount;
return true;
}
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
require(
newNum >= ((totalSupply() * 1) / 1000) / 1e18,
"Cannot set maxTransactionAmount lower than 0.1%"
);
maxTransactionAmount = newNum * (10**18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(
newNum >= ((totalSupply() * 5) / 1000) / 1e18,
"Cannot set maxWallet lower than 0.5%"
);
maxWallet = newNum * (10**18);
}
function excludeFromMaxTransaction(address updAds, bool isEx)
public
onlyOwner
{
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
function updateSwapEnabled(bool enabled) external onlyOwner {
swapEnabled = enabled;
}
function updateBuyFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 11, "Must keep fees at 11% or less");
}
function updateSellFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 11, "Must keep fees at 30% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyOwner
{
require(
pair != uniswapV2Pair,
"The pair cannot be removed from automatedMarketMakerPairs"
);
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateMarketingWallet(address newMarketingWallet)
external
onlyOwner
{
emit marketingWalletUpdated(newMarketingWallet, marketingWallet);
marketingWallet = newMarketingWallet;
}
function updateDevWallet(address newWallet) external onlyOwner {
emit devWalletUpdated(newWallet, devWallet);
devWallet = newWallet;
}
function isExcludedFromFees(address account) public view returns (bool) {
return _isExcludedFromFees[account];
}
event BoughtEarly(address indexed sniper);
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
if (
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
else if (
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
} else if (!_isExcludedMaxTransactionAmount[to]) {
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
) {
if (!tradingActive) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (transferDelayEnabled) {
if (
to != owner() &&
to != address(uniswapV2Router) &&
to != address(uniswapV2Pair)
) {
require(
_holderLastTransferTimestamp[tx.origin] <
block.number,
"_transfer:: Transfer Delay enabled. Only one purchase per block allowed."
);
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTransactionAmount,
"Sell transfer amount exceeds the maxTransactionAmount."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if (
!swapping &&
automatedMarketMakerPairs[to] &&
lpBurnEnabled &&
block.timestamp >= lastLpBurnTime + lpBurnFrequency &&
!_isExcludedFromFees[from]
) {
autoBurnLiquidityPairTokens();
}
bool takeFee = !swapping;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
tokensForDev += (fees * sellDevFee) / sellTotalFees;
tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;
}
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
tokensForDev += (fees * buyDevFee) / buyTotalFees;
tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
address(this),
tokenAmount,
deadAddress,
block.timestamp
);
}
uniswapV2Router.addLiquidityETH{value: ethAmount}(
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity +
tokensForMarketing +
tokensForDev;
bool success;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractBalance > swapTokensAtAmount * 20) {
contractBalance = swapTokensAtAmount * 20;
}
totalTokensToSwap /
2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(
totalTokensToSwap
);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
(success, ) = address(marketingWallet).call{
value: address(this).balance
}("");
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity +
tokensForMarketing +
tokensForDev;
bool success;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractBalance > swapTokensAtAmount * 20) {
contractBalance = swapTokensAtAmount * 20;
}
totalTokensToSwap /
2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(
totalTokensToSwap
);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
(success, ) = address(marketingWallet).call{
value: address(this).balance
}("");
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity +
tokensForMarketing +
tokensForDev;
bool success;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractBalance > swapTokensAtAmount * 20) {
contractBalance = swapTokensAtAmount * 20;
}
totalTokensToSwap /
2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(
totalTokensToSwap
);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
(success, ) = address(marketingWallet).call{
value: address(this).balance
}("");
}
uint256 liquidityTokens = (contractBalance * tokensForLiquidity) /
(success, ) = address(devWallet).call{value: ethForDev}("");
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity +
tokensForMarketing +
tokensForDev;
bool success;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractBalance > swapTokensAtAmount * 20) {
contractBalance = swapTokensAtAmount * 20;
}
totalTokensToSwap /
2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(
totalTokensToSwap
);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
(success, ) = address(marketingWallet).call{
value: address(this).balance
}("");
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity +
tokensForMarketing +
tokensForDev;
bool success;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractBalance > swapTokensAtAmount * 20) {
contractBalance = swapTokensAtAmount * 20;
}
totalTokensToSwap /
2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(
totalTokensToSwap
);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
(success, ) = address(marketingWallet).call{
value: address(this).balance
}("");
}
function setAutoLPBurnSettings(
uint256 _frequencyInSeconds,
uint256 _percent,
bool _Enabled
) external onlyOwner {
require(
_frequencyInSeconds >= 600,
"cannot set buyback more often than every 10 minutes"
);
require(
_percent <= 1000 && _percent >= 0,
"Must set auto LP burn percent between 0% and 10%"
);
lpBurnFrequency = _frequencyInSeconds;
percentForLPBurn = _percent;
lpBurnEnabled = _Enabled;
}
function autoBurnLiquidityPairTokens() internal returns (bool) {
lastLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(
10000
);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit AutoNukeLP();
return true;
}
function autoBurnLiquidityPairTokens() internal returns (bool) {
lastLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(
10000
);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit AutoNukeLP();
return true;
}
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
function manualBurnLiquidityPairTokens(uint256 percent)
external
onlyOwner
returns (bool)
{
require(
block.timestamp > lastManualLpBurnTime + manualBurnFrequency,
"Must wait for cooldown to finish"
);
require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
lastManualLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit ManualNukeLP();
return true;
}
function manualBurnLiquidityPairTokens(uint256 percent)
external
onlyOwner
returns (bool)
{
require(
block.timestamp > lastManualLpBurnTime + manualBurnFrequency,
"Must wait for cooldown to finish"
);
require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
lastManualLpBurnTime = block.timestamp;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
pair.sync();
emit ManualNukeLP();
return true;
}
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
}
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// SPDX-License-Identifier: GPL-3.0
// Forked from https://github.com/ourzora/core @ 450cd154bfbb70f62e94050cc3f1560d58e0506a
pragma solidity >=0.8.4;
pragma experimental ABIEncoderV2;
import { SafeMath } from "@openzeppelin/contracts/utils/math/SafeMath.sol";
import { IERC721 } from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { Decimal } from "./Decimal.sol";
import { ZooKeeper } from "./ZooKeeper.sol";
import { ZooMedia } from "./ZooMedia.sol";
import { IMarket } from "./interfaces/IMarket.sol";
import "./console.sol";
/**
* @title A Market for pieces of media
* @notice This contract contains all of the market logic for ZooMedia
*/
contract ZooMarket is IMarket {
using SafeMath for uint256;
using SafeERC20 for IERC20;
/* *******
* Globals
* *******
*/
// Deployment Address
address private _owner;
// Address of the keeper contract that can call this market
address public keeperAddress;
// Address of the media contract that can call this market
address public mediaAddress;
// Mapping from token to mapping from bidder to bid
mapping(uint256 => mapping(address => Bid)) private _tokenBidders;
// Mapping from token to the bid shares for the token
mapping(uint256 => BidShares) private _bidShares;
// Mapping from token to the current ask for the token
mapping(uint256 => Ask) private _tokenAsks;
/* *********
* Modifiers
* *********
*/
/**
* @notice require that the msg.sender is the configured media contract
*/
modifier onlyZoo() {
require(
keeperAddress == msg.sender || mediaAddress == msg.sender,
"ZooMarket: Only Zoo contracts can call this method"
);
_;
}
modifier onlyOwner() {
require(_owner == msg.sender, "ZooMarket: Only owner has access");
_;
}
/* ****************
* View Functions
* ****************
*/
function bidForTokenBidder(uint256 tokenID, address bidder)
external
view
override
returns (Bid memory)
{
return _tokenBidders[tokenID][bidder];
}
function currentAskForToken(uint256 tokenID)
external
view
override
returns (Ask memory)
{
return _tokenAsks[tokenID];
}
function bidSharesForToken(uint256 tokenID)
public
view
override
returns (BidShares memory)
{
return _bidShares[tokenID];
}
/**
* @notice Validates that the bid is valid by ensuring that the bid amount can be split perfectly into all the bid shares.
* We do this by comparing the sum of the individual share values with the amount and ensuring they are equal. Because
* the splitShare function uses integer division, any inconsistencies with the original and split sums would be due to
* a bid splitting that does not perfectly divide the bid amount.
*/
function isValidBid(uint256 tokenID, uint256 bidAmount)
public
view
override
returns (bool)
{
BidShares memory bidShares = bidSharesForToken(tokenID);
console.log("bidamount", bidAmount);
// require(
// isValidBidShares(bidShares),
// "ZooMarket: Invalid bid shares for token"
// );
return
bidAmount != 0 &&
(bidAmount ==
splitShare(bidShares.creator, bidAmount)
.add(splitShare(bidShares.prevOwner, bidAmount))
.add(splitShare(bidShares.owner, bidAmount)));
}
/**
* @notice Validates that the provided bid shares sum to 100
*/
function isValidBidShares(BidShares memory bidShares)
public
pure
override
returns (bool)
{
return
bidShares.creator.value.add(bidShares.owner.value).add(
bidShares.prevOwner.value
) == uint256(100).mul(Decimal.BASE);
}
/**
* @notice return a % of the specified amount. This function is used to split a bid into shares
* for a media's shareholders.
*/
function splitShare(Decimal.D256 memory sharePercentage, uint256 amount)
public
pure
override
returns (uint256)
{
return Decimal.mul(amount, sharePercentage).div(100);
}
/* ****************
* Public Functions
* ****************
*/
constructor() {
_owner = msg.sender;
}
/**
* @notice Sets the media contract address. This address is the only permitted address that
* can call the mutable functions. This method can only be called once.
*/
function configure(address _keeperAddress, address _mediaAddress)
external
onlyOwner
{
// require(mediaAddress == address(0), "ZooMarket: Already configured");
// require(keeperAddress == address(0), "ZooMarket: Already configured");
require(
_mediaAddress != address(0),
"ZooMarket: cannot set Media contract as zero address"
);
require(
_keeperAddress != address(0),
"ZooMarket: cannot set Keeper contract as zero address"
);
keeperAddress = _keeperAddress;
mediaAddress = _mediaAddress;
}
/**
* @notice Sets bid shares for a particular tokenID. These bid shares must
* sum to 100.
*/
function setBidShares(uint256 tokenID, BidShares memory bidShares)
public
override
onlyZoo
{
// require(
// isValidBidShares(bidShares),
// "ZooMarket: Invalid bid shares, must sum to 100"
// );
_bidShares[tokenID] = bidShares;
emit BidShareUpdated(tokenID, bidShares);
}
/**
* @notice Sets the ask on a particular media. If the ask cannot be evenly split into the media's
* bid shares, this reverts.
*/
function setAsk(uint256 tokenID, Ask memory ask) public override onlyZoo {
require(
isValidBid(tokenID, ask.amount),
"ZooMarket: Ask invalid for share splitting"
);
_tokenAsks[tokenID] = ask;
emit AskCreated(tokenID, ask);
}
/**
* @notice removes an ask for a token and emits an AskRemoved event
*/
function removeAsk(uint256 tokenID) external override onlyZoo {
emit AskRemoved(tokenID, _tokenAsks[tokenID]);
delete _tokenAsks[tokenID];
}
/**
* @notice Sets the bid on a particular media for a bidder. The token being used to bid
* is transferred from the spender to this contract to be held until removed or accepted.
* If another bid already exists for the bidder, it is refunded.
*/
function setBid(
uint256 tokenID,
Bid memory bid,
address spender
) public override onlyZoo {
BidShares memory bidShares = _bidShares[tokenID];
require(
bidShares.creator.value.add(bid.sellOnShare.value) <=
uint256(100).mul(Decimal.BASE),
"ZooMarket: Sell on fee invalid for share splitting"
);
require(
bid.bidder != address(0),
"ZooMarket: bidder cannot be 0 address"
);
require(bid.amount != 0, "ZooMarket: cannot bid amount of 0");
require(
bid.currency != address(0),
"ZooMarket: bid currency cannot be 0 address"
);
require(
bid.recipient != address(0),
"ZooMarket: bid recipient cannot be 0 address"
);
Bid storage existingBid = _tokenBidders[tokenID][bid.bidder];
// If there is an existing bid, refund it before continuing
if (existingBid.amount > 0) {
removeBid(tokenID, bid.bidder);
}
IERC20 token = IERC20(bid.currency);
// We must check the balance that was actually transferred to the market,
// as some tokens impose a transfer fee and would not actually transfer the
// full amount to the market, resulting in locked funds for refunds & bid acceptance
uint256 beforeBalance = token.balanceOf(address(this));
token.safeTransferFrom(spender, address(this), bid.amount);
uint256 afterBalance = token.balanceOf(address(this));
_tokenBidders[tokenID][bid.bidder] = Bid(
afterBalance.sub(beforeBalance),
bid.currency,
bid.bidder,
bid.recipient,
bid.sellOnShare
);
emit BidCreated(tokenID, bid);
// If a bid meets the criteria for an ask, automatically accept the bid.
// If no ask is set or the bid does not meet the requirements, ignore.
if (
_tokenAsks[tokenID].currency != address(0) &&
bid.currency == _tokenAsks[tokenID].currency &&
bid.amount >= _tokenAsks[tokenID].amount
) {
// Finalize exchange
_finalizeNFTTransfer(tokenID, bid.bidder);
}
}
/**
* @notice Removes the bid on a particular media for a bidder. The bid amount
* is transferred from this contract to the bidder, if they have a bid placed.
*/
function removeBid(uint256 tokenID, address bidder)
public
override
onlyZoo
{
Bid storage bid = _tokenBidders[tokenID][bidder];
uint256 bidAmount = bid.amount;
address bidCurrency = bid.currency;
require(bid.amount > 0, "ZooMarket: cannot remove bid amount of 0");
IERC20 token = IERC20(bidCurrency);
emit BidRemoved(tokenID, bid);
delete _tokenBidders[tokenID][bidder];
token.safeTransfer(bidder, bidAmount);
}
/**
* @notice Accepts a bid from a particular bidder. Can only be called by the media contract.
* See {_finalizeNFTTransfer}
* Provided bid must match a bid in storage. This is to prevent a race condition
* where a bid may change while the acceptBid call is in transit.
* A bid cannot be accepted if it cannot be split equally into its shareholders.
* This should only revert in rare instances (example, a low bid with a zero-decimal token),
* but is necessary to ensure fairness to all shareholders.
*/
function acceptBid(uint256 tokenID, Bid calldata expectedBid)
external
override
onlyZoo
{
Bid memory bid = _tokenBidders[tokenID][expectedBid.bidder];
require(bid.amount > 0, "ZooMarket: cannot accept bid of 0");
require(
bid.amount == expectedBid.amount &&
bid.currency == expectedBid.currency &&
bid.sellOnShare.value == expectedBid.sellOnShare.value &&
bid.recipient == expectedBid.recipient,
"ZooMarket: Unexpected bid found."
);
require(
isValidBid(tokenID, bid.amount),
"ZooMarket: Bid invalid for share splitting"
);
_finalizeNFTTransfer(tokenID, bid.bidder);
}
/**
* @notice Given a token ID and a bidder, this method transfers the value of
* the bid to the shareholders. It also transfers the ownership of the media
* to the bid recipient. Finally, it removes the accepted bid and the current ask.
*/
function _finalizeNFTTransfer(uint256 tokenID, address bidder) private {
Bid memory bid = _tokenBidders[tokenID][bidder];
BidShares storage bidShares = _bidShares[tokenID];
IERC20 token = IERC20(bid.currency);
// Transfer bid share to owner of media
token.safeTransfer(
IERC721(mediaAddress).ownerOf(tokenID),
splitShare(bidShares.owner, bid.amount)
);
// Transfer bid share to creator of media
token.safeTransfer(
ZooMedia(mediaAddress).tokenCreators(tokenID),
splitShare(bidShares.creator, bid.amount)
);
// Transfer bid share to previous owner of media (if applicable)
token.safeTransfer(
ZooMedia(mediaAddress).previousTokenOwners(tokenID),
splitShare(bidShares.prevOwner, bid.amount)
);
// Transfer media to bid recipient
ZooMedia(mediaAddress).auctionTransfer(tokenID, bid.recipient);
// Calculate the bid share for the new owner,
// equal to 100 - creatorShare - sellOnShare
bidShares.owner = Decimal.D256(
uint256(100)
.mul(Decimal.BASE)
.sub(_bidShares[tokenID].creator.value)
.sub(bid.sellOnShare.value)
);
// Set the previous owner share to the accepted bid's sell-on fee
bidShares.prevOwner = bid.sellOnShare;
// Remove the accepted bid
delete _tokenBidders[tokenID][bidder];
emit BidShareUpdated(tokenID, bidShares);
emit BidFinalized(tokenID, bid);
}
}
|
* @notice Sets the ask on a particular media. If the ask cannot be evenly split into the media's bid shares, this reverts./
|
function setAsk(uint256 tokenID, Ask memory ask) public override onlyZoo {
require(
isValidBid(tokenID, ask.amount),
"ZooMarket: Ask invalid for share splitting"
);
_tokenAsks[tokenID] = ask;
emit AskCreated(tokenID, ask);
}
| 5,468,304 |
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// SPDX-License-Identifier: MIT
pragma solidity >= 0.8.0 <= 0.8.10;
import "openzeppelin-solidity/contracts/token/ERC1155/ERC1155.sol";
contract Erc1155Sample is ERC1155 {
// this token id is incremental
uint256 private _currentIncrementalTokenId;
constructor() ERC1155("https://dolow.github.io/nft/") {
}
function mintBatch(address to, uint256[] memory tokenIds, uint256[] memory amounts) public {
for (uint256 i = 0; i < tokenIds.length; i++) {
require(tokenIds[i] <= _currentIncrementalTokenId, "not issued token id is passed");
}
_mintBatch(to, tokenIds, amounts, "");
}
function newMintBatch(address[] memory recipients, uint256[] memory amounts) public {
require(recipients.length == amounts.length, "length of recipients and amounts must be the same");
uint256 id = nextTokenId();
for (uint256 i = 0; i < recipients.length; i++) {
_mint(recipients[i], id, amounts[i], "");
}
_currentIncrementalTokenId++;
}
function mintBatchAddress(address[] memory recipients, uint256[][] memory tokenIds, uint256[][] memory amounts) public {
_mintBatchAddress(recipients, tokenIds, amounts);
}
// should consider burned token id
function tokenExists(uint256 tokenId) public view returns(bool) {
return tokenId < nextTokenId();
}
function nextTokenId() public view returns(uint256) {
return _currentIncrementalTokenId + 1;
}
function _mintBatchAddress(
address[] memory recipients,
uint256[][] memory ids,
uint256[][] memory amounts
) internal virtual {
for (uint256 i = 0; i < recipients.length; i++) {
_mintBatch(recipients[i], ids[i], amounts[i], "");
}
}
}
|
this token id is incremental
|
contract Erc1155Sample is ERC1155 {
uint256 private _currentIncrementalTokenId;
}
| 5,460,086 |
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] |
./partial_match/8453/0xa37359E63D1aa44C0ACb2a4605D3B45785C97eE3/sources/contracts/AlgebraFactory.sol
|
@inheritdoc IAlgebraFactory
|
mapping(address => mapping(address => address)) public override poolByPair;
| 16,811,109 |
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pragma solidity ^0.4.19;
// File: contracts/IPFSEvents.sol
contract IPFSEvents {
event HashAdded(string hash, uint ttl);
event HashRemoved(string hash);
event MetadataObjectAdded(string hash);
event MetadataObjectRemoved(string hash);
}
// File: contracts/Multimember.sol
contract Multimember {
// TYPES
// struct for the status of a pending operation.
struct PendingState {
uint yetNeeded;
uint membersDone;
uint index;
}
// EVENTS
// this contract only has seven types of events: it can accept a confirmation, in which case
// we record member and operation (hash) alongside it.
event Confirmation(address member, bytes32 operation);
event Revoke(address member, bytes32 operation);
// some others are in the case of an member changing.
event MemberChanged(address oldMember, address newMember);
event MemberAdded(address newMember);
event MemberRemoved(address oldMember);
// the last one is emitted if the required signatures change
event RequirementChanged(uint newRequirement);
// MODIFIERS
// simple single-sig function modifier.
modifier onlymember {
if (isMember(msg.sender))
_;
}
// multi-sig function modifier: the operation must have an intrinsic hash in order
// that later attempts can be realised as the same underlying operation and
// thus count as confirmations.
modifier onlymanymembers(bytes32 _operation) {
if (confirmAndCheck(_operation))
_;
}
// METHODS
// constructor is given number of sigs required to do protected "onlymanymembers" transactions
// as well as the selection of addresses capable of confirming them.
function Multimember(address[] _members, uint _required) public {
m_numMembers = _members.length + 1;
m_members[1] = uint(msg.sender);
m_memberIndex[uint(msg.sender)] = 1;
for (uint i = 0; i < _members.length; ++i) {
m_members[2 + i] = uint(_members[i]);
m_memberIndex[uint(_members[i])] = 2 + i;
}
m_required = _required;
}
// Revokes a prior confirmation of the given operation
function revoke(bytes32 _operation) external {
uint memberIndex = m_memberIndex[uint(msg.sender)];
// make sure they're an member
if (memberIndex == 0)
return;
uint memberIndexBit = 2**memberIndex;
var pending = m_pending[_operation];
if (pending.membersDone & memberIndexBit > 0) {
pending.yetNeeded++;
pending.membersDone -= memberIndexBit;
Revoke(msg.sender, _operation);
}
}
// Replaces an member `_from` with another `_to`.
function changeMember(address _from, address _to) onlymanymembers(keccak256(_from,_to)) external {
if (isMember(_to))
return;
uint memberIndex = m_memberIndex[uint(_from)];
if (memberIndex == 0)
return;
clearPending();
m_members[memberIndex] = uint(_to);
m_memberIndex[uint(_from)] = 0;
m_memberIndex[uint(_to)] = memberIndex;
MemberChanged(_from, _to);
}
function addMember(address _member) onlymanymembers(keccak256(_member)) public {
if (isMember(_member))
return;
clearPending();
if (m_numMembers >= MAXMEMBERS)
reorganizeMembers();
if (m_numMembers >= MAXMEMBERS)
return;
m_numMembers++;
m_members[m_numMembers] = uint(_member);
m_memberIndex[uint(_member)] = m_numMembers;
MemberAdded(_member);
}
function removeMember(address _member) onlymanymembers(keccak256(_member)) public {
uint memberIndex = m_memberIndex[uint(_member)];
if (memberIndex == 0)
return;
if (m_required > m_numMembers - 1)
return;
m_members[memberIndex] = 0;
m_memberIndex[uint(_member)] = 0;
clearPending();
reorganizeMembers(); //make sure m_numMembers is equal to the number of members and always points to the optimal free slot
MemberRemoved(_member);
}
function changeRequirement(uint _newRequired) onlymanymembers(keccak256(_newRequired)) external {
if (_newRequired > m_numMembers)
return;
m_required = _newRequired;
clearPending();
RequirementChanged(_newRequired);
}
function isMember(address _addr) public constant returns (bool) {
return m_memberIndex[uint(_addr)] > 0;
}
function hasConfirmed(bytes32 _operation, address _member) external constant returns (bool) {
var pending = m_pending[_operation];
uint memberIndex = m_memberIndex[uint(_member)];
// make sure they're an member
if (memberIndex == 0)
return false;
// determine the bit to set for this member.
uint memberIndexBit = 2**memberIndex;
return !(pending.membersDone & memberIndexBit == 0);
}
// INTERNAL METHODS
function confirmAndCheck(bytes32 _operation) internal returns (bool) {
// determine what index the present sender is:
uint memberIndex = m_memberIndex[uint(msg.sender)];
// make sure they're an member
if (memberIndex == 0)
return;
var pending = m_pending[_operation];
// if we're not yet working on this operation, switch over and reset the confirmation status.
if (pending.yetNeeded == 0) {
// reset count of confirmations needed.
pending.yetNeeded = m_required;
// reset which members have confirmed (none) - set our bitmap to 0.
pending.membersDone = 0;
pending.index = m_pendingIndex.length++;
m_pendingIndex[pending.index] = _operation;
}
// determine the bit to set for this member.
uint memberIndexBit = 2**memberIndex;
// make sure we (the message sender) haven't confirmed this operation previously.
if (pending.membersDone & memberIndexBit == 0) {
Confirmation(msg.sender, _operation);
// ok - check if count is enough to go ahead.
if (pending.yetNeeded <= 1) {
// enough confirmations: reset and run interior.
delete m_pendingIndex[m_pending[_operation].index];
delete m_pending[_operation];
return true;
} else {
// not enough: record that this member in particular confirmed.
pending.yetNeeded--;
pending.membersDone |= memberIndexBit;
}
}
}
function reorganizeMembers() private returns (bool) {
uint free = 1;
while (free < m_numMembers) {
while (free < m_numMembers && m_members[free] != 0) {
free++;
}
while (m_numMembers > 1 && m_members[m_numMembers] == 0) {
m_numMembers--;
}
if (free < m_numMembers && m_members[m_numMembers] != 0 && m_members[free] == 0) {
m_members[free] = m_members[m_numMembers];
m_memberIndex[m_members[free]] = free;
m_members[m_numMembers] = 0;
}
}
}
function clearPending() internal {
uint length = m_pendingIndex.length;
for (uint i = 0; i < length; ++i) {
if (m_pendingIndex[i] != 0) {
delete m_pending[m_pendingIndex[i]];
}
}
delete m_pendingIndex;
}
// FIELDS
// the number of members that must confirm the same operation before it is run.
uint public m_required;
// pointer used to find a free slot in m_members
uint public m_numMembers;
// list of members
uint[256] m_members;
uint constant MAXMEMBERS = 250;
// index on the list of members to allow reverse lookup
mapping(uint => uint) m_memberIndex;
// the ongoing operations.
mapping(bytes32 => PendingState) m_pending;
bytes32[] m_pendingIndex;
}
// File: contracts/IPFSProxy.sol
contract IPFSProxy is IPFSEvents, Multimember {
uint public persistLimit;
event PersistLimitChanged(uint limit);
event ContractAdded(address pubKey,uint startBlock);
event ContractRemoved(address pubKey);
/**
* @dev Constructor - adds the owner of the contract to the list of valid members
*/
function IPFSProxy(address[] _members,uint _required, uint _persistlimit) Multimember (_members, _required) public {
setTotalPersistLimit(_persistlimit);
for (uint i = 0; i < _members.length; ++i) {
MemberAdded(_members[i]);
}
addContract(this,block.number);
}
/**
* @dev Add hash to persistent storage
* @param _ipfsHash The ipfs hash to propagate.
* @param _ttl amount of time is seconds to persist this. 0 = infinite
*/
function addHash(string _ipfsHash, uint _ttl) public onlymember {
HashAdded(_ipfsHash,_ttl);
}
/**
* @dev Remove hash from persistent storage
* @param _ipfsHash The ipfs hash to propagate.
*/
function removeHash(string _ipfsHash) public onlymember {
HashRemoved(_ipfsHash);
}
/**
* Add a contract to watch list. Each proxy will then
* watch it for HashAdded and HashRemoved events
* and cache these events
* @param _contractAddress The contract address.
* @param _startBlock The startblock where to look for events.
*/
function addContract(address _contractAddress,uint _startBlock) public onlymember {
ContractAdded(_contractAddress,_startBlock);
}
/**
* @dev Remove contract from watch list
*/
function removeContract(address _contractAddress) public onlymember {
require(_contractAddress != address(this));
ContractRemoved(_contractAddress);
}
/**
* Add a metadata of an object. Each proxy will then
* read the ipfs hash file with the metadata about the object and parse it
*/
function addMetadataObject(string _metadataHash) public onlymember {
HashAdded(_metadataHash,0);
MetadataObjectAdded(_metadataHash);
}
/**
* removed a metadata of an object.
*/
function removeMetadataObject(string _metadataHash) public onlymember {
HashRemoved(_metadataHash);
MetadataObjectRemoved(_metadataHash);
}
/**
* @dev set total allowed upload
*
**/
function setTotalPersistLimit (uint _limit) public onlymanymembers(keccak256(_limit)) {
persistLimit = _limit;
PersistLimitChanged(_limit);
}
}
|
* @dev Add hash to persistent storage @param _ipfsHash The ipfs hash to propagate. @param _ttl amount of time is seconds to persist this. 0 = infinite/
|
function addHash(string _ipfsHash, uint _ttl) public onlymember {
HashAdded(_ipfsHash,_ttl);
}
| 1,353,173 |
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./full_match/3/0x34FE7bBE251934986f7353375835A4362dF6Ab0d/sources/SloppySlopesV2.sol
|
returns current Sample Token totalSupply
|
function totalSupply() public view override returns (uint) {
return _totalSupply;
}
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pragma solidity ^0.7.0;
import { CBORChainlink } from "./vendor/CBORChainlink.sol";
import { BufferChainlink } from "./vendor/BufferChainlink.sol";
/**
* @title Library for common Chainlink functions
* @dev Uses imported CBOR library for encoding to buffer
*/
library Chainlink {
uint256 internal constant defaultBufferSize = 256; // solhint-disable-line const-name-snakecase
using CBORChainlink for BufferChainlink.buffer;
struct Request {
bytes32 id;
address callbackAddress;
bytes4 callbackFunctionId;
uint256 nonce;
BufferChainlink.buffer buf;
}
/**
* @notice Initializes a Chainlink request
* @dev Sets the ID, callback address, and callback function signature on the request
* @param self The uninitialized request
* @param jobId The Job Specification ID
* @param callbackAddr The callback address
* @param callbackFunc The callback function signature
* @return The initialized request
*/
function initialize(
Request memory self,
bytes32 jobId,
address callbackAddr,
bytes4 callbackFunc
) internal pure returns (Chainlink.Request memory) {
BufferChainlink.init(self.buf, defaultBufferSize);
self.id = jobId;
self.callbackAddress = callbackAddr;
self.callbackFunctionId = callbackFunc;
return self;
}
/**
* @notice Sets the data for the buffer without encoding CBOR on-chain
* @dev CBOR can be closed with curly-brackets {} or they can be left off
* @param self The initialized request
* @param data The CBOR data
*/
function setBuffer(Request memory self, bytes memory data)
internal pure
{
BufferChainlink.init(self.buf, data.length);
BufferChainlink.append(self.buf, data);
}
/**
* @notice Adds a string value to the request with a given key name
* @param self The initialized request
* @param key The name of the key
* @param value The string value to add
*/
function add(Request memory self, string memory key, string memory value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeString(value);
}
/**
* @notice Adds a bytes value to the request with a given key name
* @param self The initialized request
* @param key The name of the key
* @param value The bytes value to add
*/
function addBytes(Request memory self, string memory key, bytes memory value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeBytes(value);
}
/**
* @notice Adds a int256 value to the request with a given key name
* @param self The initialized request
* @param key The name of the key
* @param value The int256 value to add
*/
function addInt(Request memory self, string memory key, int256 value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeInt(value);
}
/**
* @notice Adds a uint256 value to the request with a given key name
* @param self The initialized request
* @param key The name of the key
* @param value The uint256 value to add
*/
function addUint(Request memory self, string memory key, uint256 value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeUInt(value);
}
/**
* @notice Adds an array of strings to the request with a given key name
* @param self The initialized request
* @param key The name of the key
* @param values The array of string values to add
*/
function addStringArray(Request memory self, string memory key, string[] memory values)
internal pure
{
self.buf.encodeString(key);
self.buf.startArray();
for (uint256 i = 0; i < values.length; i++) {
self.buf.encodeString(values[i]);
}
self.buf.endSequence();
}
}
|
* @title Library for common Chainlink functions @dev Uses imported CBOR library for encoding to buffer/
|
library Chainlink {
using CBORChainlink for BufferChainlink.buffer;
import { CBORChainlink } from "./vendor/CBORChainlink.sol";
import { BufferChainlink } from "./vendor/BufferChainlink.sol";
struct Request {
bytes32 id;
address callbackAddress;
bytes4 callbackFunctionId;
uint256 nonce;
BufferChainlink.buffer buf;
}
function initialize(
Request memory self,
bytes32 jobId,
address callbackAddr,
bytes4 callbackFunc
) internal pure returns (Chainlink.Request memory) {
BufferChainlink.init(self.buf, defaultBufferSize);
self.id = jobId;
self.callbackAddress = callbackAddr;
self.callbackFunctionId = callbackFunc;
return self;
}
function setBuffer(Request memory self, bytes memory data)
internal pure
{
BufferChainlink.init(self.buf, data.length);
BufferChainlink.append(self.buf, data);
}
function add(Request memory self, string memory key, string memory value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeString(value);
}
function addBytes(Request memory self, string memory key, bytes memory value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeBytes(value);
}
function addInt(Request memory self, string memory key, int256 value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeInt(value);
}
function addUint(Request memory self, string memory key, uint256 value)
internal pure
{
self.buf.encodeString(key);
self.buf.encodeUInt(value);
}
function addStringArray(Request memory self, string memory key, string[] memory values)
internal pure
{
self.buf.encodeString(key);
self.buf.startArray();
for (uint256 i = 0; i < values.length; i++) {
self.buf.encodeString(values[i]);
}
self.buf.endSequence();
}
function addStringArray(Request memory self, string memory key, string[] memory values)
internal pure
{
self.buf.encodeString(key);
self.buf.startArray();
for (uint256 i = 0; i < values.length; i++) {
self.buf.encodeString(values[i]);
}
self.buf.endSequence();
}
}
| 7,306,354 |
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// SPDX-License-Identifier: MIT
pragma solidity ^0.7.3;
pragma experimental ABIEncoderV2;
import "./lib/Lib_RLPReader.sol";
import "hardhat/console.sol";
interface IMIPS {
function Step(bytes32 stateHash) external returns (bytes32);
function m() external pure returns (IMIPSMemory);
}
interface IMIPSMemory {
function AddTrieNode(bytes calldata anything) external;
function ReadMemory(bytes32 stateHash, uint32 addr) external view returns (uint32);
function ReadBytes32(bytes32 stateHash, uint32 addr) external view returns (bytes32);
function WriteMemory(bytes32 stateHash, uint32 addr, uint32 val) external returns (bytes32);
function WriteBytes32(bytes32 stateHash, uint32 addr, bytes32 val) external returns (bytes32);
}
contract Challenge {
address payable immutable owner;
// the mips machine state transition function
IMIPS immutable mips;
IMIPSMemory immutable mem;
// the program start state
bytes32 immutable GlobalStartState;
struct Chal {
uint256 L;
uint256 R;
mapping(uint256 => bytes32) assertedState;
mapping(uint256 => bytes32) defendedState;
address payable challenger;
uint256 blockNumberN;
}
mapping(uint256 => Chal) challenges;
constructor(IMIPS imips, bytes32 globalStartState) {
owner = msg.sender;
mips = imips;
mem = imips.m();
GlobalStartState = globalStartState;
}
// allow getting money (and withdrawing the bounty, honor system)
fallback() external payable {}
receive() external payable {}
function withdraw() external {
require(msg.sender == owner);
owner.transfer(address(this).balance);
}
// create challenge
uint256 public lastChallengeId = 0;
event ChallengeCreate(uint256 challengeId);
function newChallengeTrusted(uint256 blockNumberN, bytes32 startState, bytes32 finalSystemState, uint256 stepCount) internal returns (uint256) {
uint256 challengeId = lastChallengeId;
Chal storage c = challenges[challengeId];
lastChallengeId += 1;
// the challenger arrives
c.challenger = msg.sender;
// the state is set
c.blockNumberN = blockNumberN;
// NOTE: if they disagree on the start, 0->1 will fail
c.assertedState[0] = startState;
c.defendedState[0] = startState;
c.assertedState[stepCount] = finalSystemState;
// init the binary search
c.L = 0;
c.R = stepCount;
// find me later
emit ChallengeCreate(challengeId);
return challengeId;
}
// helper function to determine what nodes we need
function CallWithTrieNodes(address target, bytes calldata dat, bytes[] calldata nodes) public {
for (uint i = 0; i < nodes.length; i++) {
mem.AddTrieNode(nodes[i]);
}
(bool success, bytes memory revertData) = target.call(dat);
// TODO: better way to revert?
if (!success) {
uint256 revertDataLength = revertData.length;
assembly {
let revertDataStart := add(revertData, 32)
revert(revertDataStart, revertDataLength)
}
}
}
function InitiateChallenge(uint blockNumberN, bytes calldata blockHeaderNp1,
bytes32 assertionRoot, bytes32 finalSystemState, uint256 stepCount) external returns (uint256) {
bytes32 computedBlockHash = keccak256(blockHeaderNp1);
// get block hashes, can replace with oracle
bytes32 blockNumberNHash = blockhash(blockNumberN);
bytes32 blockNumberNp1Hash = blockhash(blockNumberN+1);
if (blockNumberNHash == bytes32(0) || blockNumberNp1Hash == bytes32(0)) {
revert("block number too old to challenge");
}
require(blockNumberNp1Hash == computedBlockHash, "end block hash wrong");
// decode the blocks
bytes32 inputHash;
{
Lib_RLPReader.RLPItem[] memory blockNp1 = Lib_RLPReader.readList(blockHeaderNp1);
bytes32 parentHash = Lib_RLPReader.readBytes32(blockNp1[0]);
require(blockNumberNHash == parentHash, "parent block hash somehow wrong");
bytes32 newroot = Lib_RLPReader.readBytes32(blockNp1[3]);
require(assertionRoot != newroot, "asserting that the real state is correct is not a challenge");
// load starting info into the input oracle
// we both agree at the beginning
bytes32 txhash = Lib_RLPReader.readBytes32(blockNp1[4]);
bytes32 coinbase = bytes32(uint256(Lib_RLPReader.readAddress(blockNp1[2])));
bytes32 unclehash = Lib_RLPReader.readBytes32(blockNp1[1]);
bytes32 gaslimit = bytes32(Lib_RLPReader.readUint256(blockNp1[9]));
bytes32 time = bytes32(Lib_RLPReader.readUint256(blockNp1[11]));
inputHash = keccak256(abi.encodePacked(parentHash, txhash, coinbase, unclehash, gaslimit, time));
}
bytes32 startState = GlobalStartState;
startState = mem.WriteBytes32(startState, 0x30000000, inputHash);
// confirm the finalSystemHash asserts the state you claim and the machine is stopped
// you must load these trie nodes into MIPSMemory before calling this
require(mem.ReadMemory(finalSystemState, 0xC0000080) == 0x5EAD0000, "machine is not stopped in final state (PC == 0x5EAD0000)");
require(mem.ReadMemory(finalSystemState, 0x30000800) == 0x1337f00d, "state is not outputted");
require(mem.ReadBytes32(finalSystemState, 0x30000804) == assertionRoot, "you are claiming a different state root in machine");
return newChallengeTrusted(blockNumberN, startState, finalSystemState, stepCount);
}
// binary search
function isSearching(uint256 challengeId) view public returns (bool) {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
return c.L + 1 != c.R;
}
function getStepNumber(uint256 challengeId) view public returns (uint256) {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
return (c.L+c.R)/2;
}
function getProposedState(uint256 challengeId) view public returns (bytes32) {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
uint256 stepNumber = getStepNumber(challengeId);
return c.assertedState[stepNumber];
}
function ProposeState(uint256 challengeId, bytes32 riscState) external {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
require(c.challenger == msg.sender, "must be challenger");
require(isSearching(challengeId), "must be searching");
uint256 stepNumber = getStepNumber(challengeId);
require(c.assertedState[stepNumber] == bytes32(0), "state already proposed");
c.assertedState[stepNumber] = riscState;
}
function RespondState(uint256 challengeId, bytes32 riscState) external {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
require(owner == msg.sender, "must be owner");
require(isSearching(challengeId), "must be searching");
uint256 stepNumber = getStepNumber(challengeId);
require(c.assertedState[stepNumber] != bytes32(0), "challenger state not proposed");
require(c.defendedState[stepNumber] == bytes32(0), "state already proposed");
// technically, we don't have to save these states
// but if we want to prove us right and not just the attacker wrong, we do
c.defendedState[stepNumber] = riscState;
if (c.assertedState[stepNumber] == c.defendedState[stepNumber]) {
// agree
c.L = stepNumber;
} else {
// disagree
c.R = stepNumber;
}
}
// final payout
// anyone can call these, right?
event ChallengerWins(uint256 challengeId);
event ChallengerLoses(uint256 challengeId);
event ChallengerLosesByDefault(uint256 challengeId);
function ConfirmStateTransition(uint256 challengeId) external {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
//require(c.challenger == msg.sender, "must be challenger");
require(!isSearching(challengeId), "binary search not finished");
bytes32 stepState = mips.Step(c.assertedState[c.L]);
console.logBytes32(stepState);
console.logBytes32(c.assertedState[c.R]);
require(stepState == c.assertedState[c.R], "wrong asserted state for challenger");
// pay out bounty!!
c.challenger.transfer(address(this).balance);
emit ChallengerWins(challengeId);
}
function DenyStateTransition(uint256 challengeId) external {
Chal storage c = challenges[challengeId];
require(c.challenger != address(0), "invalid challenge");
//require(owner == msg.sender, "must be owner");
require(!isSearching(challengeId), "binary search not finished");
bytes32 stepState = mips.Step(c.defendedState[c.L]);
// NOTE: challenger can make c.defendedState[c.R] 0 if the search always went right
// while the challenger can't win, you can't make them lose
if (c.defendedState[c.R] == bytes32(0)) {
emit ChallengerLosesByDefault(challengeId);
return;
}
console.logBytes32(stepState);
console.logBytes32(c.defendedState[c.R]);
require(stepState == c.defendedState[c.R], "wrong asserted state for defender");
// consider the challenger mocked
emit ChallengerLoses(challengeId);
}
}
|
helper function to determine what nodes we need TODO: better way to revert?
|
function CallWithTrieNodes(address target, bytes calldata dat, bytes[] calldata nodes) public {
for (uint i = 0; i < nodes.length; i++) {
mem.AddTrieNode(nodes[i]);
}
(bool success, bytes memory revertData) = target.call(dat);
if (!success) {
uint256 revertDataLength = revertData.length;
assembly {
let revertDataStart := add(revertData, 32)
revert(revertDataStart, revertDataLength)
}
}
}
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// SPDX-License-Identifier: MIT
pragma solidity 0.6.12; // Certik DCK-01
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@pancakeswap/pancake-swap-lib/contracts/token/BEP20/IBEP20.sol";
import "@pancakeswap/pancake-swap-lib/contracts/token/BEP20/SafeBEP20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
// Refer to Pancake SmartChef Contract: https://bscscan.com/address/0xCc2D359c3a99d9cfe8e6F31230142efF1C828e6D#readContract
contract GameSlot is Ownable, ReentrancyGuard, IERC721Receiver {
using SafeMath for uint256;
using SafeBEP20 for IBEP20;
IBEP20 public nativeToken;
IBEP20 public gamePointToken;
// The address of the manager
address public SLOT_MANAGER;
// Whether it is initialized
bool public isInitialized;
// The reserved tokens in the slot
uint256 public reservedAmount;
uint256 public unlockLimit; // GSD-03
uint256 public constant MAX_PERFORMANCE_FEE = 5000; // 50%
uint256 public performanceFee = 200; // 2%
// Whether it is suspended
bool public suspended = false;
uint256 public tokenId;
address public ownerAccount;
address public admin;
IERC721 public NFT; // The NFT token address that each game provider should hold
// address public treasury;
address public treasury;
// Send funds to blacklisted addresses are not allowed
mapping(address => bool) public blacklistAddresses;
event AdminTokenRecovery(address indexed tokenRecovered, uint256 amount); // Certik GSD-01
event EmergencyWithdraw(address indexed user, uint256 amount);
event AddSlotEvent(uint256 indexed tokenId, address indexed gameAccount);
event StatusChanged(address indexed slotAddress, bool suspended);
event SlotUnlocked(address indexed user, address indexed gameAccount, uint256 amount);
event AdminUpdated(address indexed user, address indexed admin);
event Payout(address indexed user, address indexed receiver, uint256 amount);
event CashoutPoints(address indexed user, uint256 amount);
event AddToWhitelist(address indexed entry);
event RemoveFromWhitelist(address indexed entry);
event SetReservedAmount(uint256 amount);
event SetPerformanceFee(uint256 amount);
event SetUnlockLimitAmount(uint256 amount);
event SetTreasury(address indexed amount); // Certik
constructor(
address _NFT,
address _nativeToken,
address _gamePointToken,
uint256 _reservedAmount,
address _manager
) public {
require(_NFT != address(0), "_NFT is a zero address"); // Certik GSD-02
require(_nativeToken != address(0), "_nativeToken is a zero address");
require(_gamePointToken != address(0), "_gamePointToken is a zero address");
NFT = IERC721(_NFT);
// Set manager to SlotManager rather than factory
SLOT_MANAGER = _manager;
nativeToken = IBEP20(_nativeToken);
gamePointToken = IBEP20(_gamePointToken);
reservedAmount = _reservedAmount;
treasury = _manager;
}
/**
* @dev See {IERC721Receiver-onERC721Received}.
*
* Always returns `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
/*
* @notice Initialize the contract, owner may not be the msg.sender
* @param _tokenId: tokenId of the NFT
* @param _owner: The current owner of NFT
*/
function initialize(
uint256 _tokenId,
address _owner
) external {
require(!isInitialized, "Already initialized");
require(msg.sender == SLOT_MANAGER, "Not manager");
tokenId = _tokenId;
_add(_tokenId, _owner);
// Make this contract initialized
isInitialized = true;
emit AddSlotEvent(_tokenId, msg.sender);
}
/**
* Game provider to bid slot
* @param _owner is the NFT owner (Game provider)
* @param _tokenId is the token owned by owner and to be transffered into this slot
*/
function _add(uint256 _tokenId, address _owner) private nonReentrant {
require(NFT.ownerOf(_tokenId) != address(this), "Already owner");
NFT.safeTransferFrom(
_owner,
address(this),
_tokenId
);
// require(NFT.ownerOf(_tokenId) == address(this), "Not received"); // Certik GSD-09
ownerAccount = _owner;
// Admin account is set to same account of ownerAccount first
admin = _owner;
}
/**
* @notice This function is private and not privilege checking
* Safe token transfer function for nativeToken, just in case if rounding error causes pool to not have enough tokens.
*/
function safeTransfer(address _to, uint256 _amount) private {
uint256 bal = nativeToken.balanceOf(address(this));
if (_amount > bal) {
nativeToken.safeTransfer(_to, bal); // Certik GSD-07
} else {
nativeToken.safeTransfer(_to, _amount); // Certik GSD-07
}
}
/**
* @notice This function is private and not privilege checking
* Safe token transfer function for point token, just in case if rounding error causes pool to not have enough tokens.
*/
function safeTransferPoints(address _to, uint256 _amount) private {
uint256 bal = gamePointToken.balanceOf(address(this));
if (_amount > bal) {
gamePointToken.safeTransfer(_to, bal); // Certik GSD-07
} else {
gamePointToken.safeTransfer(_to, _amount); // Certik GSD-07
}
}
// Owner is the GameSlot, and triggered by Game Slot owner / admin
function payout(address _to, uint256 _amount) external nonReentrant {
require(_to != address(0), "Cannot send to 0 address");
require(_amount > 0, "Must more than 0");
require(!suspended, "Slot is suspended");
require(msg.sender == admin, "Only the game admin can payout");
require(_balance() > reservedAmount, "Balance must more than reserved");
require(_amount <= (_balance() - reservedAmount), "Exceeded max payout-able amount");
require(!blacklistAddresses[_to], "user is blacklisted");
uint256 currentPerformanceFee = _amount.mul(performanceFee).div(10000);
safeTransfer(treasury, currentPerformanceFee);
safeTransfer(_to, _amount.sub(currentPerformanceFee));
emit Payout(msg.sender, _to, _amount);
}
/**
* @notice Owner is the GameSlot, and triggered by Game Slot owner
* There is no theshold to cashout
*/
function cashoutPoints(uint256 _amount) external nonReentrant {
require(_amount > 0, "Must more than 0");
require(!suspended, "Slot is suspended");
require(msg.sender == admin || msg.sender == ownerAccount, "Only the game owner or admin can cashout");
require(_amount <= _balanceOfPoints(), "Exceeded max game points amount");
safeTransferPoints(ownerAccount, _amount);
emit CashoutPoints(msg.sender, _amount);
}
/**
* Unlock NFT and return the slot back
* Only return the current tokenId back to ownerAccount
*
* TODO: need more rules to unlock slot
*/
function unlock() external onlyOwner {
require(_balance() < unlockLimit, "Balance must be less than balance before unlock"); // Certik GSD-03
NFT.transferFrom(
address(this),
ownerAccount,
tokenId
);
isInitialized = false;
emit SlotUnlocked(msg.sender, ownerAccount, tokenId);
}
function addToBlacklist(address[] calldata entries) external onlyOwner {
for(uint256 i = 0; i < entries.length; i++) {
address entry = entries[i];
require(entry != address(0), "NULL_ADDRESS");
blacklistAddresses[entry] = true;
emit AddToWhitelist(entry);
}
}
function removeFromBlacklist(address[] calldata entries) external onlyOwner {
for(uint256 i = 0; i < entries.length; i++) {
address entry = entries[i];
require(entry != address(0), "NULL_ADDRESS");
blacklistAddresses[entry] = false;
emit RemoveFromWhitelist(entry);
}
}
/*
* @notice Withdraw staked tokens without caring other factor
* The funds will be sent to treasury, and the team need to manually refund back to users affected
*
* @dev TODO: Needs to be for emergency.
*/
function emergencyWithdraw() external onlyOwner {
uint256 balance = _balance();
nativeToken.safeTransfer(treasury, balance);
emit EmergencyWithdraw(msg.sender, balance);
}
/**
* @notice It allows the admin to recover wrong tokens sent to the contract
* @param _tokenAddress: the address of the token to withdraw
* @param _tokenAmount: the number of tokens to withdraw
* @dev This function is only callable by admin.
*/
function recoverWrongTokens(address _tokenAddress, uint256 _tokenAmount) external onlyOwner {
require(_tokenAddress != address(nativeToken), "Cannot be native token");
require(_tokenAddress != address(gamePointToken), "Cannot be point token");
IBEP20(_tokenAddress).safeTransfer(treasury, _tokenAmount);
emit AdminTokenRecovery(_tokenAddress, _tokenAmount);
}
/**
* @notice Sets Reserved Amount of native token
* Can be zero only if the owner want to leave the slot
*
* @dev Only callable by the contract admin.
*/
function setAdmin(address _admin) external {
require(_admin != address(0), "Address cannot be 0");
require(msg.sender == ownerAccount, "Only the game owener can update admin");
admin = _admin;
emit AdminUpdated(msg.sender, _admin);
}
/**
* @notice Sets Reserved Amount of native token
* Can be zero only if the owner want to leave the slot
*
* @dev Only callable by the contract admin.
*/
function setReservedAmount(uint256 _reservedAmount) external onlyOwner {
reservedAmount = _reservedAmount;
emit SetReservedAmount(reservedAmount);
}
/**
* @notice Only if unlockLimit is set and the balance is less than unlockLimit
* Then it's able to unlock
*/
function setUnlockLimitAmount(uint256 _unlockLimit) external onlyOwner {
unlockLimit = _unlockLimit;
emit SetUnlockLimitAmount(_unlockLimit);
}
/**
* @notice Sets performance fee
* @dev Only callable by the contract admin.
*/
function setPerformanceFee(uint256 _performanceFee) external onlyOwner {
require(_performanceFee <= MAX_PERFORMANCE_FEE, "performanceFee cannot be more than MAX_PERFORMANCE_FEE");
performanceFee = _performanceFee;
emit SetPerformanceFee(performanceFee);
}
/**
* @notice Sets treasury address
* @dev Only callable by the contract owner.
*/
function setTreasury(address _treasury) external onlyOwner {
require(_treasury != address(0), "Cannot be zero address");
treasury = _treasury;
emit SetTreasury(treasury);
}
/**
* @notice Sets treasury address
* @dev Only callable by the contract owner.
*/
function flipSuspendState() external onlyOwner {
suspended = !suspended;
emit StatusChanged(msg.sender, suspended);
}
/** View functions */
function initialized() external view returns (bool) {
return isInitialized;
}
function isSuspended() external view returns (bool) {
return suspended;
}
function balanceOfPoints() external view returns (uint256) {
return _balanceOfPoints();
}
function _balanceOfPoints() private view returns (uint256) {
return gamePointToken.balanceOf(address(this));
}
function balance() external view returns (uint256) {
return _balance();
}
function _balance() private view returns (uint256) {
return nativeToken.balanceOf(address(this));
}
}
|
@notice Withdraw staked tokens without caring other factor The funds will be sent to treasury, and the team need to manually refund back to users affected @dev TODO: Needs to be for emergency./
|
function emergencyWithdraw() external onlyOwner {
uint256 balance = _balance();
nativeToken.safeTransfer(treasury, balance);
emit EmergencyWithdraw(msg.sender, balance);
}
| 929,688 |
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/*
https://lumberscout.io : aut viam inveniam aut faciam
*/
pragma solidity ^0.4.19;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
@title ERC827 interface, an extension of ERC20 token standard
Interface of a ERC827 token, following the ERC20 standard with extra
methods to transfer value and data and execute calls in transfers and
approvals.
*/
contract ERC827 is ERC20 {
function approve( address _spender, uint256 _value, bytes _data ) public returns (bool);
function transfer( address _to, uint256 _value, bytes _data ) public returns (bool);
function transferFrom( address _from, address _to, uint256 _value, bytes _data ) public returns (bool);
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
/**
@title ERC827, an extension of ERC20 token standard
Implementation the ERC827, following the ERC20 standard with extra
methods to transfer value and data and execute calls in transfers and
approvals.
Uses OpenZeppelin StandardToken.
*/
contract ERC827Token is ERC827, StandardToken {
/**
@dev Addition to ERC20 token methods. It allows to
approve the transfer of value and execute a call with the sent data.
Beware that changing an allowance with this method brings the risk that
someone may use both the old and the new allowance by unfortunate
transaction ordering. One possible solution to mitigate this race condition
is to first reduce the spender's allowance to 0 and set the desired value
afterwards:
https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
@param _spender The address that will spend the funds.
@param _value The amount of tokens to be spent.
@param _data ABI-encoded contract call to call `_to` address.
@return true if the call function was executed successfully
*/
function approve(address _spender, uint256 _value, bytes _data) public returns (bool) {
require(_spender != address(this));
super.approve(_spender, _value);
require(_spender.call(_data));
return true;
}
/**
@dev Addition to ERC20 token methods. Transfer tokens to a specified
address and execute a call with the sent data on the same transaction
@param _to address The address which you want to transfer to
@param _value uint256 the amout of tokens to be transfered
@param _data ABI-encoded contract call to call `_to` address.
@return true if the call function was executed successfully
*/
function transfer(address _to, uint256 _value, bytes _data) public returns (bool) {
require(_to != address(this));
super.transfer(_to, _value);
require(_to.call(_data));
return true;
}
/**
@dev Addition to ERC20 token methods. Transfer tokens from one address to
another and make a contract call on the same transaction
@param _from The address which you want to send tokens from
@param _to The address which you want to transfer to
@param _value The amout of tokens to be transferred
@param _data ABI-encoded contract call to call `_to` address.
@return true if the call function was executed successfully
*/
function transferFrom(address _from, address _to, uint256 _value, bytes _data) public returns (bool) {
require(_to != address(this));
super.transferFrom(_from, _to, _value);
require(_to.call(_data));
return true;
}
/**
* @dev Addition to StandardToken methods. Increase the amount of tokens that
* an owner allowed to a spender and execute a call with the sent data.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
* @param _data ABI-encoded contract call to call `_spender` address.
*/
function increaseApproval(address _spender, uint _addedValue, bytes _data) public returns (bool) {
require(_spender != address(this));
super.increaseApproval(_spender, _addedValue);
require(_spender.call(_data));
return true;
}
/**
* @dev Addition to StandardToken methods. Decrease the amount of tokens that
* an owner allowed to a spender and execute a call with the sent data.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
* @param _data ABI-encoded contract call to call `_spender` address.
*/
function decreaseApproval(address _spender, uint _subtractedValue, bytes _data) public returns (bool) {
require(_spender != address(this));
super.decreaseApproval(_spender, _subtractedValue);
require(_spender.call(_data));
return true;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract TALLY is ERC827Token, Ownable
{
using SafeMath for uint256;
string public constant name = "TALLY";
string public constant symbol = "TLY";
uint256 public constant decimals = 18;
address public foundationAddress;
address public developmentFundAddress;
uint256 public constant DEVELOPMENT_FUND_LOCK_TIMESPAN = 2 years;
uint256 public developmentFundUnlockTime;
bool public tokenSaleEnabled;
uint256 public preSaleStartTime;
uint256 public preSaleEndTime;
uint256 public preSaleTLYperETH;
uint256 public preferredSaleStartTime;
uint256 public preferredSaleEndTime;
uint256 public preferredSaleTLYperETH;
uint256 public mainSaleStartTime;
uint256 public mainSaleEndTime;
uint256 public mainSaleTLYperETH;
uint256 public preSaleTokensLeftForSale = 70000000 * (uint256(10)**decimals);
uint256 public preferredSaleTokensLeftForSale = 70000000 * (uint256(10)**decimals);
uint256 public minimumAmountToParticipate = 0.5 ether;
mapping(address => uint256) public addressToSpentEther;
mapping(address => uint256) public addressToPurchasedTokens;
function TALLY() public
{
owner = 0xd512fa9Ca3DF0a2145e77B445579D4210380A635;
developmentFundAddress = 0x4D18700A05D92ae5e49724f13457e1959329e80e;
foundationAddress = 0xf1A2e7a164EF56807105ba198ef8F2465B682B16;
balances[developmentFundAddress] = 300000000 * (uint256(10)**decimals);
Transfer(0x0, developmentFundAddress, balances[developmentFundAddress]);
balances[this] = 1000000000 * (uint256(10)**decimals);
Transfer(0x0, this, balances[this]);
totalSupply_ = balances[this] + balances[developmentFundAddress];
preSaleTLYperETH = 30000;
preferredSaleTLYperETH = 25375;
mainSaleTLYperETH = 20000;
preSaleStartTime = 1518652800;
preSaleEndTime = 1519516800; // 15 february 2018 - 25 february 2018
preferredSaleStartTime = 1519862400;
preferredSaleEndTime = 1521072000; // 01 march 2018 - 15 march 2018
mainSaleStartTime = 1521504000;
mainSaleEndTime = 1526774400; // 20 march 2018 - 20 may 2018
tokenSaleEnabled = true;
developmentFundUnlockTime = now + DEVELOPMENT_FUND_LOCK_TIMESPAN;
}
function () payable external
{
require(tokenSaleEnabled);
require(msg.value >= minimumAmountToParticipate);
uint256 tokensPurchased;
if (now >= preSaleStartTime && now < preSaleEndTime)
{
tokensPurchased = msg.value.mul(preSaleTLYperETH);
preSaleTokensLeftForSale = preSaleTokensLeftForSale.sub(tokensPurchased);
}
else if (now >= preferredSaleStartTime && now < preferredSaleEndTime)
{
tokensPurchased = msg.value.mul(preferredSaleTLYperETH);
preferredSaleTokensLeftForSale = preferredSaleTokensLeftForSale.sub(tokensPurchased);
}
else if (now >= mainSaleStartTime && now < mainSaleEndTime)
{
tokensPurchased = msg.value.mul(mainSaleTLYperETH);
}
else
{
revert();
}
addressToSpentEther[msg.sender] = addressToSpentEther[msg.sender].add(msg.value);
addressToPurchasedTokens[msg.sender] = addressToPurchasedTokens[msg.sender].add(tokensPurchased);
this.transfer(msg.sender, tokensPurchased);
}
function refund() external
{
// Only allow refunds before the main sale has ended
require(now < mainSaleEndTime);
uint256 tokensRefunded = addressToPurchasedTokens[msg.sender];
uint256 etherRefunded = addressToSpentEther[msg.sender];
addressToPurchasedTokens[msg.sender] = 0;
addressToSpentEther[msg.sender] = 0;
// Send the tokens back to this contract
balances[msg.sender] = balances[msg.sender].sub(tokensRefunded);
balances[this] = balances[this].add(tokensRefunded);
Transfer(msg.sender, this, tokensRefunded);
// Add the tokens back to the pre-sale or preferred sale
if (now < preSaleEndTime)
{
preSaleTokensLeftForSale = preSaleTokensLeftForSale.add(tokensRefunded);
}
else if (now < preferredSaleEndTime)
{
preferredSaleTokensLeftForSale = preferredSaleTokensLeftForSale.add(tokensRefunded);
}
// Send the ether back to the user
msg.sender.transfer(etherRefunded);
}
// Prevent the development fund from transferring its tokens while they are locked
function transfer(address _to, uint256 _value) public returns (bool)
{
if (msg.sender == developmentFundAddress && now < developmentFundUnlockTime) revert();
super.transfer(_to, _value);
}
function transfer(address _to, uint256 _value, bytes _data) public returns (bool)
{
if (msg.sender == developmentFundAddress && now < developmentFundUnlockTime) revert();
super.transfer(_to, _value, _data);
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool)
{
if (_from == developmentFundAddress && now < developmentFundUnlockTime) revert();
super.transferFrom(_from, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value, bytes _data) public returns (bool)
{
if (_from == developmentFundAddress && now < developmentFundUnlockTime) revert();
super.transferFrom(_from, _to, _value, _data);
}
// Allow the owner to retrieve all the collected ETH
function drain() external onlyOwner
{
owner.transfer(this.balance);
}
// Allow the owner to enable or disable the token sale at any time.
function enableTokenSale() external onlyOwner
{
tokenSaleEnabled = true;
}
function disableTokenSale() external onlyOwner
{
tokenSaleEnabled = false;
}
function moveUnsoldTokensToFoundation() external onlyOwner
{
this.transfer(foundationAddress, balances[this]);
}
// Pre-sale configuration
function setPreSaleTLYperETH(uint256 _newTLYperETH) public onlyOwner
{
preSaleTLYperETH = _newTLYperETH;
}
function setPreSaleStartAndEndTime(uint256 _newStartTime, uint256 _newEndTime) public onlyOwner
{
preSaleStartTime = _newStartTime;
preSaleEndTime = _newEndTime;
}
// Preferred sale configuration
function setPreferredSaleTLYperETH(uint256 _newTLYperETH) public onlyOwner
{
preferredSaleTLYperETH = _newTLYperETH;
}
function setPreferredSaleStartAndEndTime(uint256 _newStartTime, uint256 _newEndTime) public onlyOwner
{
preferredSaleStartTime = _newStartTime;
preferredSaleEndTime = _newEndTime;
}
// Main sale configuration
function setMainSaleTLYperETH(uint256 _newTLYperETH) public onlyOwner
{
mainSaleTLYperETH = _newTLYperETH;
}
function setMainSaleStartAndEndTime(uint256 _newStartTime, uint256 _newEndTime) public onlyOwner
{
mainSaleStartTime = _newStartTime;
mainSaleEndTime = _newEndTime;
}
}
|
Preferred sale configuration
|
function setPreferredSaleTLYperETH(uint256 _newTLYperETH) public onlyOwner
{
preferredSaleTLYperETH = _newTLYperETH;
}
| 12,754,497 |
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pragma solidity ^0.4.18;
/**
* Overflow aware uint math functions.
*
* Inspired by https://github.com/MakerDAO/maker-otc/blob/master/contracts/simple_market.sol
*/
contract SafeMath {
//internals
function safeMul(uint a, uint b) internal returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function safeSub(uint a, uint b) internal returns (uint) {
assert(b <= a);
return a - b;
}
function safeAdd(uint a, uint b) internal returns (uint) {
uint c = a + b;
assert(c>=a && c>=b);
return c;
}
function assert(bool assertion) internal {
if (!assertion) throw;
}
}
/**
* ERC 20 token
*
* https://github.com/ethereum/EIPs/issues/20
*/
contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
/**
* ERC 20 token
*
* https://github.com/ethereum/EIPs/issues/20
*/
contract StandardToken is Token {
/**
* Reviewed:
* - Interger overflow = OK, checked
*/
function transfer(address _to, uint256 _value) returns (bool success) {
//Default assumes totalSupply can't be over max (2^256 - 1).
//If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap.
//Replace the if with this one instead.
if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
//if (balances[msg.sender] >= _value && _value > 0) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
//same as above. Replace this line with the following if you want to protect against wrapping uints.
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
//if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
} else { return false; }
}
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
function approve(address _spender, uint256 _value) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
mapping(address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
uint256 public totalSupply;
}
/*
* monechain token contract
*/
contract monechainToken is StandardToken, SafeMath {
string public name = "monechain token";
string public symbol = "MONE";
uint public decimals = 18;
uint crowdSalePrice = 300000;
uint totalPeriod = 256 * 24 * 365; // unit: block count, estimate: 7 days
/* uint public startBlock = 5275100; //crowdsale start block */
uint public startBlock = 5278735; //crowdsale start block
uint public endBlock = startBlock + totalPeriod; //crowdsale end block
address public founder = 0x466ea8E1003273AE4471c903fBA7D8edF834970a;
uint256 bountyAllocation = 4500000000 * 10**(decimals); //pre-allocation tokens
uint256 public crowdSaleCap = 1000000000 * 10**(decimals); //max token sold during crowdsale
uint256 public candyCap = 4500000000 * 10**(decimals); //max token send as candy
uint256 public candyPrice = 1000; //candy amount per address
uint256 public crowdSaleSoldAmount = 0;
uint256 public candySentAmount = 0;
mapping(address => bool) candyBook; //candy require record book
event Buy(address indexed sender, uint eth, uint fbt);
function monechainToken() {
// founder = msg.sender;
balances[founder] = bountyAllocation;
totalSupply = bountyAllocation;
Transfer(address(0), founder, bountyAllocation);
}
function price() constant returns(uint) {
if (block.number<startBlock || block.number > endBlock) return 0; //this will not happen according to the buyToken block check, but still set it to 0.
else return crowdSalePrice; // default-ICO
}
function() public payable {
if(msg.value == 0) {
//candy
sendCandy(msg.sender);
}
else {
// crowdsale
buyToken(msg.sender, msg.value);
}
}
function sendCandy(address recipient) internal {
// check the address to see Whether or not it already has a record in the dababase
if (candyBook[recipient] || candySentAmount>=candyCap) revert();
else {
uint candies = candyPrice * 10**(decimals);
candyBook[recipient] = true;
balances[recipient] = safeAdd(balances[recipient], candies);
candySentAmount = safeAdd(candySentAmount, candies);
totalSupply = safeAdd(totalSupply, candies);
Transfer(address(0), recipient, candies);
}
}
function buyToken(address recipient, uint256 value) internal {
if (block.number<startBlock || block.number>endBlock) throw; //crowdsale period checked
uint tokens = safeMul(value, price());
if(safeAdd(crowdSaleSoldAmount, tokens)>crowdSaleCap) throw; //crowdSaleCap checked
balances[recipient] = safeAdd(balances[recipient], tokens);
crowdSaleSoldAmount = safeAdd(crowdSaleSoldAmount, tokens);
totalSupply = safeAdd(totalSupply, tokens);
Transfer(address(0), recipient, tokens); //Transaction record for token perchaise
if (!founder.call.value(value)()) throw; //immediately send Ether to founder address
Buy(recipient, value, tokens); //Buy event
}
// check how many candies one can claim by now;
function checkCandy(address recipient) constant returns (uint256 remaining) {
if(candyBook[recipient]) return 0;
else return candyPrice;
}
function changeFounder(address newFounder) {
if (msg.sender!=founder) throw;
founder = newFounder;
}
}
|
crowdsale start block
|
uint public startBlock = 5278735;
| 7,969,794 |
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pragma solidity ^0.4.24;
contract F3Devents {
// fired whenever a player registers a name
event onNewName
(
uint256 indexed playerID,
address indexed playerAddress,
bytes32 indexed playerName,
bool isNewPlayer,
uint256 affiliateID,
address affiliateAddress,
bytes32 affiliateName,
uint256 amountPaid,
uint256 timeStamp
);
// fired at end of buy or reload
event onEndTx
(
uint256 compressedData,
uint256 compressedIDs,
bytes32 playerName,
address playerAddress,
uint256 ethIn,
uint256 keysBought,
address winnerAddr,
bytes32 winnerName,
uint256 amountWon,
uint256 newPot,
uint256 P3DAmount,
uint256 genAmount,
uint256 potAmount,
uint256 airDropPot
);
// fired whenever theres a withdraw
event onWithdraw
(
uint256 indexed playerID,
address playerAddress,
bytes32 playerName,
uint256 ethOut,
uint256 timeStamp
);
// fired whenever a withdraw forces end round to be ran
event onWithdrawAndDistribute
(
address playerAddress,
bytes32 playerName,
uint256 ethOut,
uint256 compressedData,
uint256 compressedIDs,
address winnerAddr,
bytes32 winnerName,
uint256 amountWon,
uint256 newPot,
uint256 P3DAmount,
uint256 genAmount
);
// (fomo3d short only) fired whenever a player tries a buy after round timer
// hit zero, and causes end round to be ran.
event onBuyAndDistribute
(
address playerAddress,
bytes32 playerName,
uint256 ethIn,
uint256 compressedData,
uint256 compressedIDs,
address winnerAddr,
bytes32 winnerName,
uint256 amountWon,
uint256 newPot,
uint256 P3DAmount,
uint256 genAmount
);
// (fomo3d short only) fired whenever a player tries a reload after round timer
// hit zero, and causes end round to be ran.
event onReLoadAndDistribute
(
address playerAddress,
bytes32 playerName,
uint256 compressedData,
uint256 compressedIDs,
address winnerAddr,
bytes32 winnerName,
uint256 amountWon,
uint256 newPot,
uint256 P3DAmount,
uint256 genAmount
);
// fired whenever an affiliate is paid
event onAffiliatePayout
(
uint256 indexed affiliateID,
address affiliateAddress,
bytes32 affiliateName,
uint256 indexed roundID,
uint256 indexed buyerID,
uint256 amount,
uint256 timeStamp
);
// received pot swap deposit
event onPotSwapDeposit
(
uint256 roundID,
uint256 amountAddedToPot
);
}
//==============================================================================
// _ _ _ _|_ _ _ __|_ _ _ _|_ _ .
// (_(_)| | | | (_|(_ | _\(/_ | |_||_) .
//====================================|=========================================
contract modularShort is F3Devents {}
contract F5D is modularShort {
using SafeMath for *;
using NameFilter for string;
using F3DKeysCalcShort for uint256;
PlayerBookInterface constant private PlayerBook = PlayerBookInterface(0x4e369A53c989CE99475814aa0ad81Ad8eBE346E8);
//==============================================================================
// _ _ _ |`. _ _ _ |_ | _ _ .
// (_(_)| |~|~|(_||_|| (_||_)|(/__\ . (game settings)
//=================_|===========================================================
address private admin = 0xAbcd3976464519C648758233f6Fd19fecdf70Eb6;
address private coin_base = 0xe2300D461B62c8482C21e6E77E6DDf3F5B902478;
string constant public name = "F5D";
string constant public symbol = "F5D";
uint256 private rndExtra_ = 0; // length of the very first ICO
uint256 private rndGap_ = 2 minutes; // length of ICO phase, set to 1 year for EOS.
uint256 constant private rndInit_ = 1 hours; // round timer starts at this
uint256 constant private rndInc_ = 30 seconds; // every full key purchased adds this much to the timer
uint256 constant private rndMax_ = 24 hours; // max length a round timer can be
//==============================================================================
// _| _ _|_ _ _ _ _|_ _ .
// (_|(_| | (_| _\(/_ | |_||_) . (data used to store game info that changes)
//=============================|================================================
uint256 public airDropPot_; // person who gets the airdrop wins part of this pot
uint256 public airDropTracker_ = 0; // incremented each time a "qualified" tx occurs. used to determine winning air drop
uint256 public rID_; // round id number / total rounds that have happened
//****************
// PLAYER DATA
//****************
mapping (address => uint256) public pIDxAddr_; // (addr => pID) returns player id by address
mapping (bytes32 => uint256) public pIDxName_; // (name => pID) returns player id by name
mapping (uint256 => F3Ddatasets.Player) public plyr_; // (pID => data) player data
mapping (uint256 => mapping (uint256 => F3Ddatasets.PlayerRounds)) public plyrRnds_; // (pID => rID => data) player round data by player id & round id
mapping (uint256 => mapping (bytes32 => bool)) public plyrNames_; // (pID => name => bool) list of names a player owns. (used so you can change your display name amongst any name you own)
//****************
// ROUND DATA
//****************
mapping (uint256 => F3Ddatasets.Round) public round_; // (rID => data) round data
mapping (uint256 => mapping(uint256 => uint256)) public rndTmEth_; // (rID => tID => data) eth in per team, by round id and team id
//****************
// TEAM FEE DATA
//****************
mapping (uint256 => F3Ddatasets.TeamFee) public fees_; // (team => fees) fee distribution by team
mapping (uint256 => F3Ddatasets.PotSplit) public potSplit_; // (team => fees) pot split distribution by team
//==============================================================================
// _ _ _ __|_ _ __|_ _ _ .
// (_(_)| |_\ | | |_|(_ | (_)| . (initial data setup upon contract deploy)
//==============================================================================
constructor()
public
{
// Team allocation structures
// 0 = whales
// 1 = bears
// 2 = sneks
// 3 = bulls
// Team allocation percentages
// (F3D, P3D) + (Pot , Referrals, Community)
// Referrals / Community rewards are mathematically designed to come from the winner's share of the pot.
fees_[0] = F3Ddatasets.TeamFee(22,6); //50% to pot, 10% to aff, 2% to com, 1% to pot swap, 1% to air drop pot
fees_[1] = F3Ddatasets.TeamFee(38,0); //43% to pot, 10% to aff, 2% to com, 1% to pot swap, 1% to air drop pot
fees_[2] = F3Ddatasets.TeamFee(52,10); //20% to pot, 10% to aff, 2% to com, 1% to pot swap, 1% to air drop pot
fees_[3] = F3Ddatasets.TeamFee(68,8); //35% to pot, 10% to aff, 2% to com, 1% to pot swap, 1% to air drop pot
// how to split up the final pot based on which team was picked
// (F3D, P3D)
potSplit_[0] = F3Ddatasets.PotSplit(15,10); //48% to winner, 25% to next round, 2% to com
potSplit_[1] = F3Ddatasets.PotSplit(25,0); //48% to winner, 25% to next round, 2% to com
potSplit_[2] = F3Ddatasets.PotSplit(20,20); //48% to winner, 10% to next round, 2% to com
potSplit_[3] = F3Ddatasets.PotSplit(30,10); //48% to winner, 10% to next round, 2% to com
}
//==============================================================================
// _ _ _ _|. |`. _ _ _ .
// | | |(_)(_||~|~|(/_| _\ . (these are safety checks)
//==============================================================================
/**
* @dev used to make sure no one can interact with contract until it has
* been activated.
*/
modifier isActivated() {
require(activated_ == true, "its not ready yet. check ?eta in discord");
_;
}
/**
* @dev prevents contracts from interacting with fomo3d
*/
modifier isHuman() {
address _addr = msg.sender;
uint256 _codeLength;
assembly {_codeLength := extcodesize(_addr)}
require(_codeLength == 0, "sorry humans only");
_;
}
/**
* @dev sets boundaries for incoming tx
*/
modifier isWithinLimits(uint256 _eth) {
require(_eth >= 1000000000, "pocket lint: not a valid currency");
require(_eth <= 100000000000000000000000, "no vitalik, no");
_;
}
//==============================================================================
// _ |_ |. _ |` _ __|_. _ _ _ .
// |_)|_||_)||(_ ~|~|_|| |(_ | |(_)| |_\ . (use these to interact with contract)
//====|=========================================================================
/**
* @dev emergency buy uses last stored affiliate ID and team snek
*/
function()
isActivated()
isHuman()
isWithinLimits(msg.value)
public
payable
{
// set up our tx event data and determine if player is new or not
F3Ddatasets.EventReturns memory _eventData_ = determinePID(_eventData_);
// fetch player id
uint256 _pID = pIDxAddr_[msg.sender];
// buy core
buyCore(_pID, plyr_[_pID].laff, 2, _eventData_);
}
/**
* @dev converts all incoming ethereum to keys.
* -functionhash- 0x8f38f309 (using ID for affiliate)
* -functionhash- 0x98a0871d (using address for affiliate)
* -functionhash- 0xa65b37a1 (using name for affiliate)
* @param _affCode the ID/address/name of the player who gets the affiliate fee
* @param _team what team is the player playing for?
*/
function buyXid(uint256 _affCode, uint256 _team)
isActivated()
isHuman()
isWithinLimits(msg.value)
public
payable
{
// set up our tx event data and determine if player is new or not
F3Ddatasets.EventReturns memory _eventData_ = determinePID(_eventData_);
// fetch player id
uint256 _pID = pIDxAddr_[msg.sender];
// manage affiliate residuals
// if no affiliate code was given or player tried to use their own, lolz
if (_affCode == 0 || _affCode == _pID)
{
// use last stored affiliate code
_affCode = plyr_[_pID].laff;
// if affiliate code was given & its not the same as previously stored
} else if (_affCode != plyr_[_pID].laff) {
// update last affiliate
plyr_[_pID].laff = _affCode;
}
// verify a valid team was selected
_team = verifyTeam(_team);
// buy core
buyCore(_pID, _affCode, _team, _eventData_);
}
function buyXaddr(address _affCode, uint256 _team)
isActivated()
isHuman()
isWithinLimits(msg.value)
public
payable
{
// set up our tx event data and determine if player is new or not
F3Ddatasets.EventReturns memory _eventData_ = determinePID(_eventData_);
// fetch player id
uint256 _pID = pIDxAddr_[msg.sender];
// manage affiliate residuals
uint256 _affID;
// if no affiliate code was given or player tried to use their own, lolz
if (_affCode == address(0) || _affCode == msg.sender)
{
// use last stored affiliate code
_affID = plyr_[_pID].laff;
// if affiliate code was given
} else {
// get affiliate ID from aff Code
_affID = pIDxAddr_[_affCode];
// if affID is not the same as previously stored
if (_affID != plyr_[_pID].laff)
{
// update last affiliate
plyr_[_pID].laff = _affID;
}
}
// verify a valid team was selected
_team = verifyTeam(_team);
// buy core
buyCore(_pID, _affID, _team, _eventData_);
}
function buyXname(bytes32 _affCode, uint256 _team)
isActivated()
isHuman()
isWithinLimits(msg.value)
public
payable
{
// set up our tx event data and determine if player is new or not
F3Ddatasets.EventReturns memory _eventData_ = determinePID(_eventData_);
// fetch player id
uint256 _pID = pIDxAddr_[msg.sender];
// manage affiliate residuals
uint256 _affID;
// if no affiliate code was given or player tried to use their own, lolz
if (_affCode == '' || _affCode == plyr_[_pID].name)
{
// use last stored affiliate code
_affID = plyr_[_pID].laff;
// if affiliate code was given
} else {
// get affiliate ID from aff Code
_affID = pIDxName_[_affCode];
// if affID is not the same as previously stored
if (_affID != plyr_[_pID].laff)
{
// update last affiliate
plyr_[_pID].laff = _affID;
}
}
// verify a valid team was selected
_team = verifyTeam(_team);
// buy core
buyCore(_pID, _affID, _team, _eventData_);
}
/**
* @dev essentially the same as buy, but instead of you sending ether
* from your wallet, it uses your unwithdrawn earnings.
* -functionhash- 0x349cdcac (using ID for affiliate)
* -functionhash- 0x82bfc739 (using address for affiliate)
* -functionhash- 0x079ce327 (using name for affiliate)
* @param _affCode the ID/address/name of the player who gets the affiliate fee
* @param _team what team is the player playing for?
* @param _eth amount of earnings to use (remainder returned to gen vault)
*/
function reLoadXid(uint256 _affCode, uint256 _team, uint256 _eth)
isActivated()
isHuman()
isWithinLimits(_eth)
public
{
// set up our tx event data
F3Ddatasets.EventReturns memory _eventData_;
// fetch player ID
uint256 _pID = pIDxAddr_[msg.sender];
// manage affiliate residuals
// if no affiliate code was given or player tried to use their own, lolz
if (_affCode == 0 || _affCode == _pID)
{
// use last stored affiliate code
_affCode = plyr_[_pID].laff;
// if affiliate code was given & its not the same as previously stored
} else if (_affCode != plyr_[_pID].laff) {
// update last affiliate
plyr_[_pID].laff = _affCode;
}
// verify a valid team was selected
_team = verifyTeam(_team);
// reload core
reLoadCore(_pID, _affCode, _team, _eth, _eventData_);
}
function reLoadXaddr(address _affCode, uint256 _team, uint256 _eth)
isActivated()
isHuman()
isWithinLimits(_eth)
public
{
// set up our tx event data
F3Ddatasets.EventReturns memory _eventData_;
// fetch player ID
uint256 _pID = pIDxAddr_[msg.sender];
// manage affiliate residuals
uint256 _affID;
// if no affiliate code was given or player tried to use their own, lolz
if (_affCode == address(0) || _affCode == msg.sender)
{
// use last stored affiliate code
_affID = plyr_[_pID].laff;
// if affiliate code was given
} else {
// get affiliate ID from aff Code
_affID = pIDxAddr_[_affCode];
// if affID is not the same as previously stored
if (_affID != plyr_[_pID].laff)
{
// update last affiliate
plyr_[_pID].laff = _affID;
}
}
// verify a valid team was selected
_team = verifyTeam(_team);
// reload core
reLoadCore(_pID, _affID, _team, _eth, _eventData_);
}
function reLoadXname(bytes32 _affCode, uint256 _team, uint256 _eth)
isActivated()
isHuman()
isWithinLimits(_eth)
public
{
// set up our tx event data
F3Ddatasets.EventReturns memory _eventData_;
// fetch player ID
uint256 _pID = pIDxAddr_[msg.sender];
// manage affiliate residuals
uint256 _affID;
// if no affiliate code was given or player tried to use their own, lolz
if (_affCode == '' || _affCode == plyr_[_pID].name)
{
// use last stored affiliate code
_affID = plyr_[_pID].laff;
// if affiliate code was given
} else {
// get affiliate ID from aff Code
_affID = pIDxName_[_affCode];
// if affID is not the same as previously stored
if (_affID != plyr_[_pID].laff)
{
// update last affiliate
plyr_[_pID].laff = _affID;
}
}
// verify a valid team was selected
_team = verifyTeam(_team);
// reload core
reLoadCore(_pID, _affID, _team, _eth, _eventData_);
}
/**
* @dev withdraws all of your earnings.
* -functionhash- 0x3ccfd60b
*/
function withdraw()
isActivated()
isHuman()
public
{
// setup local rID
uint256 _rID = rID_;
// grab time
uint256 _now = now;
// fetch player ID
uint256 _pID = pIDxAddr_[msg.sender];
// setup temp var for player eth
uint256 _eth;
// check to see if round has ended and no one has run round end yet
if (_now > round_[_rID].end && round_[_rID].ended == false && round_[_rID].plyr != 0)
{
// set up our tx event data
F3Ddatasets.EventReturns memory _eventData_;
// end the round (distributes pot)
round_[_rID].ended = true;
_eventData_ = endRound(_eventData_);
// get their earnings
_eth = withdrawEarnings(_pID);
// gib moni
if (_eth > 0)
plyr_[_pID].addr.transfer(_eth);
// build event data
_eventData_.compressedData = _eventData_.compressedData + (_now * 1000000000000000000);
_eventData_.compressedIDs = _eventData_.compressedIDs + _pID;
// fire withdraw and distribute event
emit F3Devents.onWithdrawAndDistribute
(
msg.sender,
plyr_[_pID].name,
_eth,
_eventData_.compressedData,
_eventData_.compressedIDs,
_eventData_.winnerAddr,
_eventData_.winnerName,
_eventData_.amountWon,
_eventData_.newPot,
_eventData_.P3DAmount,
_eventData_.genAmount
);
// in any other situation
} else {
// get their earnings
_eth = withdrawEarnings(_pID);
// gib moni
if (_eth > 0)
plyr_[_pID].addr.transfer(_eth);
// fire withdraw event
emit F3Devents.onWithdraw(_pID, msg.sender, plyr_[_pID].name, _eth, _now);
}
}
/**
* @dev use these to register names. they are just wrappers that will send the
* registration requests to the PlayerBook contract. So registering here is the
* same as registering there. UI will always display the last name you registered.
* but you will still own all previously registered names to use as affiliate
* links.
* - must pay a registration fee.
* - name must be unique
* - names will be converted to lowercase
* - name cannot start or end with a space
* - cannot have more than 1 space in a row
* - cannot be only numbers
* - cannot start with 0x
* - name must be at least 1 char
* - max length of 32 characters long
* - allowed characters: a-z, 0-9, and space
* -functionhash- 0x921dec21 (using ID for affiliate)
* -functionhash- 0x3ddd4698 (using address for affiliate)
* -functionhash- 0x685ffd83 (using name for affiliate)
* @param _nameString players desired name
* @param _affCode affiliate ID, address, or name of who referred you
* @param _all set to true if you want this to push your info to all games
* (this might cost a lot of gas)
*/
function registerNameXID(string _nameString, uint256 _affCode, bool _all)
isHuman()
public
payable
{
bytes32 _name = _nameString.nameFilter();
address _addr = msg.sender;
uint256 _paid = msg.value;
(bool _isNewPlayer, uint256 _affID) = PlayerBook.registerNameXIDFromDapp.value(_paid)(_addr, _name, _affCode, _all);
uint256 _pID = pIDxAddr_[_addr];
// fire event
emit F3Devents.onNewName(_pID, _addr, _name, _isNewPlayer, _affID, plyr_[_affID].addr, plyr_[_affID].name, _paid, now);
}
function registerNameXaddr(string _nameString, address _affCode, bool _all)
isHuman()
public
payable
{
bytes32 _name = _nameString.nameFilter();
address _addr = msg.sender;
uint256 _paid = msg.value;
(bool _isNewPlayer, uint256 _affID) = PlayerBook.registerNameXaddrFromDapp.value(msg.value)(msg.sender, _name, _affCode, _all);
uint256 _pID = pIDxAddr_[_addr];
// fire event
emit F3Devents.onNewName(_pID, _addr, _name, _isNewPlayer, _affID, plyr_[_affID].addr, plyr_[_affID].name, _paid, now);
}
function registerNameXname(string _nameString, bytes32 _affCode, bool _all)
isHuman()
public
payable
{
bytes32 _name = _nameString.nameFilter();
address _addr = msg.sender;
uint256 _paid = msg.value;
(bool _isNewPlayer, uint256 _affID) = PlayerBook.registerNameXnameFromDapp.value(msg.value)(msg.sender, _name, _affCode, _all);
uint256 _pID = pIDxAddr_[_addr];
// fire event
emit F3Devents.onNewName(_pID, _addr, _name, _isNewPlayer, _affID, plyr_[_affID].addr, plyr_[_affID].name, _paid, now);
}
//==============================================================================
// _ _ _|__|_ _ _ _ .
// (_|(/_ | | (/_| _\ . (for UI & viewing things on etherscan)
//=====_|=======================================================================
/**
* @dev return the price buyer will pay for next 1 individual key.
* -functionhash- 0x018a25e8
* @return price for next key bought (in wei format)
*/
function getBuyPrice()
public
view
returns(uint256)
{
// setup local rID
uint256 _rID = rID_;
// grab time
uint256 _now = now;
// are we in a round?
if (_now > round_[_rID].strt + rndGap_ && (_now <= round_[_rID].end || (_now > round_[_rID].end && round_[_rID].plyr == 0)))
return ( (round_[_rID].keys.add(1000000000000000000)).ethRec(1000000000000000000) );
else // rounds over. need price for new round
return ( 75000000000000 ); // init
}
/**
* @dev returns time left. dont spam this, you'll ddos yourself from your node
* provider
* -functionhash- 0xc7e284b8
* @return time left in seconds
*/
function getTimeLeft()
public
view
returns(uint256)
{
// setup local rID
uint256 _rID = rID_;
// grab time
uint256 _now = now;
if (_now < round_[_rID].end)
if (_now > round_[_rID].strt + rndGap_)
return( (round_[_rID].end).sub(_now) );
else
return( (round_[_rID].strt + rndGap_).sub(_now) );
else
return(0);
}
/**
* @dev returns player earnings per vaults
* -functionhash- 0x63066434
* @return winnings vault
* @return general vault
* @return affiliate vault
*/
function getPlayerVaults(uint256 _pID)
public
view
returns(uint256 ,uint256, uint256)
{
// setup local rID
uint256 _rID = rID_;
// if round has ended. but round end has not been run (so contract has not distributed winnings)
if (now > round_[_rID].end && round_[_rID].ended == false && round_[_rID].plyr != 0)
{
// if player is winner
if (round_[_rID].plyr == _pID)
{
return
(
(plyr_[_pID].win).add( ((round_[_rID].pot).mul(48)) / 100 ),
(plyr_[_pID].gen).add( getPlayerVaultsHelper(_pID, _rID).sub(plyrRnds_[_pID][_rID].mask) ),
plyr_[_pID].aff
);
// if player is not the winner
} else {
return
(
plyr_[_pID].win,
(plyr_[_pID].gen).add( getPlayerVaultsHelper(_pID, _rID).sub(plyrRnds_[_pID][_rID].mask) ),
plyr_[_pID].aff
);
}
// if round is still going on, or round has ended and round end has been ran
} else {
return
(
plyr_[_pID].win,
(plyr_[_pID].gen).add(calcUnMaskedEarnings(_pID, plyr_[_pID].lrnd)),
plyr_[_pID].aff
);
}
}
/**
* solidity hates stack limits. this lets us avoid that hate
*/
function getPlayerVaultsHelper(uint256 _pID, uint256 _rID)
private
view
returns(uint256)
{
return( ((((round_[_rID].mask).add(((((round_[_rID].pot).mul(potSplit_[round_[_rID].team].gen)) / 100).mul(1000000000000000000)) / (round_[_rID].keys))).mul(plyrRnds_[_pID][_rID].keys)) / 1000000000000000000) );
}
/**
* @dev returns all current round info needed for front end
* -functionhash- 0x747dff42
* @return eth invested during ICO phase
* @return round id
* @return total keys for round
* @return time round ends
* @return time round started
* @return current pot
* @return current team ID & player ID in lead
* @return current player in leads address
* @return current player in leads name
* @return whales eth in for round
* @return bears eth in for round
* @return sneks eth in for round
* @return bulls eth in for round
* @return airdrop tracker # & airdrop pot
*/
function getCurrentRoundInfo()
public
view
returns(uint256, uint256, uint256, uint256, uint256, uint256, uint256, address, bytes32, uint256, uint256, uint256, uint256, uint256)
{
// setup local rID
uint256 _rID = rID_;
return
(
round_[_rID].ico, //0
_rID, //1
round_[_rID].keys, //2
round_[_rID].end, //3
round_[_rID].strt, //4
round_[_rID].pot, //5
(round_[_rID].team + (round_[_rID].plyr * 10)), //6
plyr_[round_[_rID].plyr].addr, //7
plyr_[round_[_rID].plyr].name, //8
rndTmEth_[_rID][0], //9
rndTmEth_[_rID][1], //10
rndTmEth_[_rID][2], //11
rndTmEth_[_rID][3], //12
airDropTracker_ + (airDropPot_ * 1000) //13
);
}
/**
* @dev returns player info based on address. if no address is given, it will
* use msg.sender
* -functionhash- 0xee0b5d8b
* @param _addr address of the player you want to lookup
* @return player ID
* @return player name
* @return keys owned (current round)
* @return winnings vault
* @return general vault
* @return affiliate vault
* @return player round eth
*/
function getPlayerInfoByAddress(address _addr)
public
view
returns(uint256, bytes32, uint256, uint256, uint256, uint256, uint256)
{
// setup local rID
uint256 _rID = rID_;
if (_addr == address(0))
{
_addr == msg.sender;
}
uint256 _pID = pIDxAddr_[_addr];
return
(
_pID, //0
plyr_[_pID].name, //1
plyrRnds_[_pID][_rID].keys, //2
plyr_[_pID].win, //3
(plyr_[_pID].gen).add(calcUnMaskedEarnings(_pID, plyr_[_pID].lrnd)), //4
plyr_[_pID].aff, //5
plyrRnds_[_pID][_rID].eth //6
);
}
//==============================================================================
// _ _ _ _ | _ _ . _ .
// (_(_)| (/_ |(_)(_||(_ . (this + tools + calcs + modules = our softwares engine)
//=====================_|=======================================================
/**
* @dev logic runs whenever a buy order is executed. determines how to handle
* incoming eth depending on if we are in an active round or not
*/
function buyCore(uint256 _pID, uint256 _affID, uint256 _team, F3Ddatasets.EventReturns memory _eventData_)
private
{
// setup local rID
uint256 _rID = rID_;
// grab time
uint256 _now = now;
// if round is active
if (_now > round_[_rID].strt + rndGap_ && (_now <= round_[_rID].end || (_now > round_[_rID].end && round_[_rID].plyr == 0)))
{
// call core
core(_rID, _pID, msg.value, _affID, _team, _eventData_);
// if round is not active
} else {
// check to see if end round needs to be ran
if (_now > round_[_rID].end && round_[_rID].ended == false)
{
// end the round (distributes pot) & start new round
round_[_rID].ended = true;
_eventData_ = endRound(_eventData_);
// build event data
_eventData_.compressedData = _eventData_.compressedData + (_now * 1000000000000000000);
_eventData_.compressedIDs = _eventData_.compressedIDs + _pID;
// fire buy and distribute event
emit F3Devents.onBuyAndDistribute
(
msg.sender,
plyr_[_pID].name,
msg.value,
_eventData_.compressedData,
_eventData_.compressedIDs,
_eventData_.winnerAddr,
_eventData_.winnerName,
_eventData_.amountWon,
_eventData_.newPot,
_eventData_.P3DAmount,
_eventData_.genAmount
);
}
// put eth in players vault
plyr_[_pID].gen = plyr_[_pID].gen.add(msg.value);
}
}
/**
* @dev logic runs whenever a reload order is executed. determines how to handle
* incoming eth depending on if we are in an active round or not
*/
function reLoadCore(uint256 _pID, uint256 _affID, uint256 _team, uint256 _eth, F3Ddatasets.EventReturns memory _eventData_)
private
{
// setup local rID
uint256 _rID = rID_;
// grab time
uint256 _now = now;
// if round is active
if (_now > round_[_rID].strt + rndGap_ && (_now <= round_[_rID].end || (_now > round_[_rID].end && round_[_rID].plyr == 0)))
{
// get earnings from all vaults and return unused to gen vault
// because we use a custom safemath library. this will throw if player
// tried to spend more eth than they have.
plyr_[_pID].gen = withdrawEarnings(_pID).sub(_eth);
// call core
core(_rID, _pID, _eth, _affID, _team, _eventData_);
// if round is not active and end round needs to be ran
} else if (_now > round_[_rID].end && round_[_rID].ended == false) {
// end the round (distributes pot) & start new round
round_[_rID].ended = true;
_eventData_ = endRound(_eventData_);
// build event data
_eventData_.compressedData = _eventData_.compressedData + (_now * 1000000000000000000);
_eventData_.compressedIDs = _eventData_.compressedIDs + _pID;
// fire buy and distribute event
emit F3Devents.onReLoadAndDistribute
(
msg.sender,
plyr_[_pID].name,
_eventData_.compressedData,
_eventData_.compressedIDs,
_eventData_.winnerAddr,
_eventData_.winnerName,
_eventData_.amountWon,
_eventData_.newPot,
_eventData_.P3DAmount,
_eventData_.genAmount
);
}
}
/**
* @dev this is the core logic for any buy/reload that happens while a round
* is live.
*/
function core(uint256 _rID, uint256 _pID, uint256 _eth, uint256 _affID, uint256 _team, F3Ddatasets.EventReturns memory _eventData_)
private
{
// if player is new to round
if (plyrRnds_[_pID][_rID].keys == 0)
_eventData_ = managePlayer(_pID, _eventData_);
// early round eth limiter
if (round_[_rID].eth < 100000000000000000000 && plyrRnds_[_pID][_rID].eth.add(_eth) > 1000000000000000000)
{
uint256 _availableLimit = (1000000000000000000).sub(plyrRnds_[_pID][_rID].eth);
uint256 _refund = _eth.sub(_availableLimit);
plyr_[_pID].gen = plyr_[_pID].gen.add(_refund);
_eth = _availableLimit;
}
// if eth left is greater than min eth allowed (sorry no pocket lint)
if (_eth > 1000000000)
{
// mint the new keys
uint256 _keys = (round_[_rID].eth).keysRec(_eth);
// if they bought at least 1 whole key
if (_keys >= 1000000000000000000)
{
updateTimer(_keys, _rID);
// set new leaders
if (round_[_rID].plyr != _pID)
round_[_rID].plyr = _pID;
if (round_[_rID].team != _team)
round_[_rID].team = _team;
// set the new leader bool to true
_eventData_.compressedData = _eventData_.compressedData + 100;
}
// manage airdrops
if (_eth >= 100000000000000000)
{
airDropTracker_++;
if (airdrop() == true)
{
// gib muni
uint256 _prize;
if (_eth >= 10000000000000000000)
{
// calculate prize and give it to winner
_prize = ((airDropPot_).mul(75)) / 100;
plyr_[_pID].win = (plyr_[_pID].win).add(_prize);
// adjust airDropPot
airDropPot_ = (airDropPot_).sub(_prize);
// let event know a tier 3 prize was won
_eventData_.compressedData += 300000000000000000000000000000000;
} else if (_eth >= 1000000000000000000 && _eth < 10000000000000000000) {
// calculate prize and give it to winner
_prize = ((airDropPot_).mul(50)) / 100;
plyr_[_pID].win = (plyr_[_pID].win).add(_prize);
// adjust airDropPot
airDropPot_ = (airDropPot_).sub(_prize);
// let event know a tier 2 prize was won
_eventData_.compressedData += 200000000000000000000000000000000;
} else if (_eth >= 100000000000000000 && _eth < 1000000000000000000) {
// calculate prize and give it to winner
_prize = ((airDropPot_).mul(25)) / 100;
plyr_[_pID].win = (plyr_[_pID].win).add(_prize);
// adjust airDropPot
airDropPot_ = (airDropPot_).sub(_prize);
// let event know a tier 3 prize was won
_eventData_.compressedData += 300000000000000000000000000000000;
}
// set airdrop happened bool to true
_eventData_.compressedData += 10000000000000000000000000000000;
// let event know how much was won
_eventData_.compressedData += _prize * 1000000000000000000000000000000000;
// reset air drop tracker
airDropTracker_ = 0;
}
}
// store the air drop tracker number (number of buys since last airdrop)
_eventData_.compressedData = _eventData_.compressedData + (airDropTracker_ * 1000);
// update player
plyrRnds_[_pID][_rID].keys = _keys.add(plyrRnds_[_pID][_rID].keys);
plyrRnds_[_pID][_rID].eth = _eth.add(plyrRnds_[_pID][_rID].eth);
// update round
round_[_rID].keys = _keys.add(round_[_rID].keys);
round_[_rID].eth = _eth.add(round_[_rID].eth);
rndTmEth_[_rID][_team] = _eth.add(rndTmEth_[_rID][_team]);
// distribute eth
_eventData_ = distributeExternal(_rID, _pID, _eth, _affID, _team, _eventData_);
_eventData_ = distributeInternal(_rID, _pID, _eth, _team, _keys, _eventData_);
// call end tx function to fire end tx event.
endTx(_pID, _team, _eth, _keys, _eventData_);
}
}
//==============================================================================
// _ _ | _ | _ _|_ _ _ _ .
// (_(_||(_|_||(_| | (_)| _\ .
//==============================================================================
/**
* @dev calculates unmasked earnings (just calculates, does not update mask)
* @return earnings in wei format
*/
function calcUnMaskedEarnings(uint256 _pID, uint256 _rIDlast)
private
view
returns(uint256)
{
return( (((round_[_rIDlast].mask).mul(plyrRnds_[_pID][_rIDlast].keys)) / (1000000000000000000)).sub(plyrRnds_[_pID][_rIDlast].mask) );
}
/**
* @dev returns the amount of keys you would get given an amount of eth.
* -functionhash- 0xce89c80c
* @param _rID round ID you want price for
* @param _eth amount of eth sent in
* @return keys received
*/
function calcKeysReceived(uint256 _rID, uint256 _eth)
public
view
returns(uint256)
{
// grab time
uint256 _now = now;
// are we in a round?
if (_now > round_[_rID].strt + rndGap_ && (_now <= round_[_rID].end || (_now > round_[_rID].end && round_[_rID].plyr == 0)))
return ( (round_[_rID].eth).keysRec(_eth) );
else // rounds over. need keys for new round
return ( (_eth).keys() );
}
/**
* @dev returns current eth price for X keys.
* -functionhash- 0xcf808000
* @param _keys number of keys desired (in 18 decimal format)
* @return amount of eth needed to send
*/
function iWantXKeys(uint256 _keys)
public
view
returns(uint256)
{
// setup local rID
uint256 _rID = rID_;
// grab time
uint256 _now = now;
// are we in a round?
if (_now > round_[_rID].strt + rndGap_ && (_now <= round_[_rID].end || (_now > round_[_rID].end && round_[_rID].plyr == 0)))
return ( (round_[_rID].keys.add(_keys)).ethRec(_keys) );
else // rounds over. need price for new round
return ( (_keys).eth() );
}
//==============================================================================
// _|_ _ _ | _ .
// | (_)(_)|_\ .
//==============================================================================
/**
* @dev receives name/player info from names contract
*/
function receivePlayerInfo(uint256 _pID, address _addr, bytes32 _name, uint256 _laff)
external
{
require (msg.sender == address(PlayerBook), "your not playerNames contract... hmmm..");
if (pIDxAddr_[_addr] != _pID)
pIDxAddr_[_addr] = _pID;
if (pIDxName_[_name] != _pID)
pIDxName_[_name] = _pID;
if (plyr_[_pID].addr != _addr)
plyr_[_pID].addr = _addr;
if (plyr_[_pID].name != _name)
plyr_[_pID].name = _name;
if (plyr_[_pID].laff != _laff)
plyr_[_pID].laff = _laff;
if (plyrNames_[_pID][_name] == false)
plyrNames_[_pID][_name] = true;
}
/**
* @dev receives entire player name list
*/
function receivePlayerNameList(uint256 _pID, bytes32 _name)
external
{
require (msg.sender == address(PlayerBook), "your not playerNames contract... hmmm..");
if(plyrNames_[_pID][_name] == false)
plyrNames_[_pID][_name] = true;
}
/**
* @dev gets existing or registers new pID. use this when a player may be new
* @return pID
*/
function determinePID(F3Ddatasets.EventReturns memory _eventData_)
private
returns (F3Ddatasets.EventReturns)
{
uint256 _pID = pIDxAddr_[msg.sender];
// if player is new to this version of fomo3d
if (_pID == 0)
{
// grab their player ID, name and last aff ID, from player names contract
_pID = PlayerBook.getPlayerID(msg.sender);
bytes32 _name = PlayerBook.getPlayerName(_pID);
uint256 _laff = PlayerBook.getPlayerLAff(_pID);
// set up player account
pIDxAddr_[msg.sender] = _pID;
plyr_[_pID].addr = msg.sender;
if (_name != "")
{
pIDxName_[_name] = _pID;
plyr_[_pID].name = _name;
plyrNames_[_pID][_name] = true;
}
if (_laff != 0 && _laff != _pID)
plyr_[_pID].laff = _laff;
// set the new player bool to true
_eventData_.compressedData = _eventData_.compressedData + 1;
}
return (_eventData_);
}
/**
* @dev checks to make sure user picked a valid team. if not sets team
* to default (sneks)
*/
function verifyTeam(uint256 _team)
private
pure
returns (uint256)
{
if (_team < 0 || _team > 3)
return(2);
else
return(_team);
}
/**
* @dev decides if round end needs to be run & new round started. and if
* player unmasked earnings from previously played rounds need to be moved.
*/
function managePlayer(uint256 _pID, F3Ddatasets.EventReturns memory _eventData_)
private
returns (F3Ddatasets.EventReturns)
{
// if player has played a previous round, move their unmasked earnings
// from that round to gen vault.
if (plyr_[_pID].lrnd != 0)
updateGenVault(_pID, plyr_[_pID].lrnd);
// update player's last round played
plyr_[_pID].lrnd = rID_;
// set the joined round bool to true
_eventData_.compressedData = _eventData_.compressedData + 10;
return(_eventData_);
}
/**
* @dev ends the round. manages paying out winner/splitting up pot
*/
function endRound(F3Ddatasets.EventReturns memory _eventData_)
private
returns (F3Ddatasets.EventReturns)
{
// setup local rID
uint256 _rID = rID_;
// grab our winning player and team id's
uint256 _winPID = round_[_rID].plyr;
uint256 _winTID = round_[_rID].team;
// grab our pot amount
uint256 _pot = round_[_rID].pot;
// calculate our winner share, community rewards, gen share,
// p3d share, and amount reserved for next pot
uint256 _win = (_pot.mul(48)) / 100;
uint256 _com = (_pot / 50);
uint256 _gen = (_pot.mul(potSplit_[_winTID].gen)) / 100;
uint256 _p3d = (_pot.mul(potSplit_[_winTID].p3d)) / 100;
uint256 _res = (((_pot.sub(_win)).sub(_com)).sub(_gen)).sub(_p3d);
// calculate ppt for round mask
uint256 _ppt = (_gen.mul(1000000000000000000)) / (round_[_rID].keys);
uint256 _dust = _gen.sub((_ppt.mul(round_[_rID].keys)) / 1000000000000000000);
if (_dust > 0)
{
_gen = _gen.sub(_dust);
_res = _res.add(_dust);
}
// pay our winner
plyr_[_winPID].win = _win.add(plyr_[_winPID].win);
// community rewards
_com = _com.add(_p3d.sub(_p3d / 100 ));
coin_base.transfer(_com);
_res = _res.add(_p3d / 100);
// distribute gen portion to key holders
round_[_rID].mask = _ppt.add(round_[_rID].mask);
// prepare event data
_eventData_.compressedData = _eventData_.compressedData + (round_[_rID].end * 1000000);
_eventData_.compressedIDs = _eventData_.compressedIDs + (_winPID * 100000000000000000000000000) + (_winTID * 100000000000000000);
_eventData_.winnerAddr = plyr_[_winPID].addr;
_eventData_.winnerName = plyr_[_winPID].name;
_eventData_.amountWon = _win;
_eventData_.genAmount = _gen;
_eventData_.P3DAmount = _p3d;
_eventData_.newPot = _res;
// start next round
rID_++;
_rID++;
round_[_rID].strt = now;
round_[_rID].end = now.add(rndInit_).add(rndGap_);
round_[_rID].pot = _res;
return(_eventData_);
}
/**
* @dev moves any unmasked earnings to gen vault. updates earnings mask
*/
function updateGenVault(uint256 _pID, uint256 _rIDlast)
private
{
uint256 _earnings = calcUnMaskedEarnings(_pID, _rIDlast);
if (_earnings > 0)
{
// put in gen vault
plyr_[_pID].gen = _earnings.add(plyr_[_pID].gen);
// zero out their earnings by updating mask
plyrRnds_[_pID][_rIDlast].mask = _earnings.add(plyrRnds_[_pID][_rIDlast].mask);
}
}
/**
* @dev updates round timer based on number of whole keys bought.
*/
function updateTimer(uint256 _keys, uint256 _rID)
private
{
// grab time
uint256 _now = now;
// calculate time based on number of keys bought
uint256 _newTime;
if (_now > round_[_rID].end && round_[_rID].plyr == 0)
_newTime = (((_keys) / (1000000000000000000)).mul(rndInc_)).add(_now);
else
_newTime = (((_keys) / (1000000000000000000)).mul(rndInc_)).add(round_[_rID].end);
// compare to max and set new end time
if (_newTime < (rndMax_).add(_now))
round_[_rID].end = _newTime;
else
round_[_rID].end = rndMax_.add(_now);
}
/**
* @dev generates a random number between 0-99 and checks to see if thats
* resulted in an airdrop win
* @return do we have a winner?
*/
function airdrop()
private
view
returns(bool)
{
uint256 seed = uint256(keccak256(abi.encodePacked(
(block.timestamp).add
(block.difficulty).add
((uint256(keccak256(abi.encodePacked(block.coinbase)))) / (now)).add
(block.gaslimit).add
((uint256(keccak256(abi.encodePacked(msg.sender)))) / (now)).add
(block.number)
)));
if((seed - ((seed / 1000) * 1000)) < airDropTracker_)
return(true);
else
return(false);
}
/**
* @dev distributes eth based on fees to com, aff, and p3d
*/
function distributeExternal(uint256 _rID, uint256 _pID, uint256 _eth, uint256 _affID, uint256 _team, F3Ddatasets.EventReturns memory _eventData_)
private
returns(F3Ddatasets.EventReturns)
{
// pay 3% out to community rewards
uint256 _p1 = _eth / 100;
uint256 _com = _eth / 50;
_com = _com.add(_p1);
uint256 _p3d;
if (!address(coin_base).call.value(_com)())
{
// This ensures Team Just cannot influence the outcome of FoMo3D with
// bank migrations by breaking outgoing transactions.
// Something we would never do. But that's not the point.
// We spent 2000$ in eth re-deploying just to patch this, we hold the
// highest belief that everything we create should be trustless.
// Team JUST, The name you shouldn't have to trust.
_p3d = _com;
_com = 0;
}
// distribute share to affiliate
uint256 _aff = _eth / 100 * 17;
// decide what to do with affiliate share of fees
// affiliate must not be self, and must have a name registered
if (_affID != _pID && plyr_[_affID].name != '') {
plyr_[_affID].aff = _aff.add(plyr_[_affID].aff);
emit F3Devents.onAffiliatePayout(_affID, plyr_[_affID].addr, plyr_[_affID].name, _rID, _pID, _aff, now);
} else {
_p3d = _p3d.add(_aff);
}
// pay out p3d
_p3d = _p3d.add((_eth.mul(fees_[_team].p3d)) / (100));
if (_p3d > 0)
{
// deposit to divies contract
uint256 _potAmount = _p3d / 2;
coin_base.transfer(_p3d.sub(_potAmount));
round_[_rID].pot = round_[_rID].pot.add(_potAmount);
// set up event data
_eventData_.P3DAmount = _p3d.add(_eventData_.P3DAmount);
}
return(_eventData_);
}
function potSwap()
external
payable
{
// setup local rID
uint256 _rID = rID_ + 1;
round_[_rID].pot = round_[_rID].pot.add(msg.value);
emit F3Devents.onPotSwapDeposit(_rID, msg.value);
}
/**
* @dev distributes eth based on fees to gen and pot
*/
function distributeInternal(uint256 _rID, uint256 _pID, uint256 _eth, uint256 _team, uint256 _keys, F3Ddatasets.EventReturns memory _eventData_)
private
returns(F3Ddatasets.EventReturns)
{
// calculate gen share
uint256 _gen = (_eth.mul(fees_[_team].gen)) / 100;
// toss 1% into airdrop pot
uint256 _air = (_eth / 100);
airDropPot_ = airDropPot_.add(_air);
// update eth balance (eth = eth - (com share + pot swap share + aff share + p3d share + airdrop pot share))
_eth = _eth.sub(((_eth.mul(14)) / 100).add((_eth.mul(fees_[_team].p3d)) / 100));
// calculate pot
uint256 _pot = _eth.sub(_gen);
// distribute gen share (thats what updateMasks() does) and adjust
// balances for dust.
uint256 _dust = updateMasks(_rID, _pID, _gen, _keys);
if (_dust > 0)
_gen = _gen.sub(_dust);
// add eth to pot
round_[_rID].pot = _pot.add(_dust).add(round_[_rID].pot);
// set up event data
_eventData_.genAmount = _gen.add(_eventData_.genAmount);
_eventData_.potAmount = _pot;
return(_eventData_);
}
/**
* @dev updates masks for round and player when keys are bought
* @return dust left over
*/
function updateMasks(uint256 _rID, uint256 _pID, uint256 _gen, uint256 _keys)
private
returns(uint256)
{
/* MASKING NOTES
earnings masks are a tricky thing for people to wrap their minds around.
the basic thing to understand here. is were going to have a global
tracker based on profit per share for each round, that increases in
relevant proportion to the increase in share supply.
the player will have an additional mask that basically says "based
on the rounds mask, my shares, and how much i've already withdrawn,
how much is still owed to me?"
*/
// calc profit per key & round mask based on this buy: (dust goes to pot)
uint256 _ppt = (_gen.mul(1000000000000000000)) / (round_[_rID].keys);
round_[_rID].mask = _ppt.add(round_[_rID].mask);
// calculate player earning from their own buy (only based on the keys
// they just bought). & update player earnings mask
uint256 _pearn = (_ppt.mul(_keys)) / (1000000000000000000);
plyrRnds_[_pID][_rID].mask = (((round_[_rID].mask.mul(_keys)) / (1000000000000000000)).sub(_pearn)).add(plyrRnds_[_pID][_rID].mask);
// calculate & return dust
return(_gen.sub((_ppt.mul(round_[_rID].keys)) / (1000000000000000000)));
}
/**
* @dev adds up unmasked earnings, & vault earnings, sets them all to 0
* @return earnings in wei format
*/
function withdrawEarnings(uint256 _pID)
private
returns(uint256)
{
// update gen vault
updateGenVault(_pID, plyr_[_pID].lrnd);
// from vaults
uint256 _earnings = (plyr_[_pID].win).add(plyr_[_pID].gen).add(plyr_[_pID].aff);
if (_earnings > 0)
{
plyr_[_pID].win = 0;
plyr_[_pID].gen = 0;
plyr_[_pID].aff = 0;
}
return(_earnings);
}
/**
* @dev prepares compression data and fires event for buy or reload tx's
*/
function endTx(uint256 _pID, uint256 _team, uint256 _eth, uint256 _keys, F3Ddatasets.EventReturns memory _eventData_)
private
{
_eventData_.compressedData = _eventData_.compressedData + (now * 1000000000000000000) + (_team * 100000000000000000000000000000);
_eventData_.compressedIDs = _eventData_.compressedIDs + _pID + (rID_ * 10000000000000000000000000000000000000000000000000000);
emit F3Devents.onEndTx
(
_eventData_.compressedData,
_eventData_.compressedIDs,
plyr_[_pID].name,
msg.sender,
_eth,
_keys,
_eventData_.winnerAddr,
_eventData_.winnerName,
_eventData_.amountWon,
_eventData_.newPot,
_eventData_.P3DAmount,
_eventData_.genAmount,
_eventData_.potAmount,
airDropPot_
);
}
//==============================================================================
// (~ _ _ _._|_ .
// _)(/_(_|_|| | | \/ .
//====================/=========================================================
/** upon contract deploy, it will be deactivated. this is a one time
* use function that will activate the contract. we do this so devs
* have time to set things up on the web end **/
bool public activated_ = false;
function activate()
public
{
// only team just can activate
require(msg.sender == admin, "only admin can activate");
// can only be ran once
require(activated_ == false, "FOMO Short already activated");
// activate the contract
activated_ = true;
// lets start first round
rID_ = 1;
round_[1].strt = now + rndExtra_ - rndGap_;
round_[1].end = now + rndInit_ + rndExtra_;
}
}
//==============================================================================
// __|_ _ __|_ _ .
// _\ | | |_|(_ | _\ .
//==============================================================================
library F3Ddatasets {
//compressedData key
// [76-33][32][31][30][29][28-18][17][16-6][5-3][2][1][0]
// 0 - new player (bool)
// 1 - joined round (bool)
// 2 - new leader (bool)
// 3-5 - air drop tracker (uint 0-999)
// 6-16 - round end time
// 17 - winnerTeam
// 18 - 28 timestamp
// 29 - team
// 30 - 0 = reinvest (round), 1 = buy (round), 2 = buy (ico), 3 = reinvest (ico)
// 31 - airdrop happened bool
// 32 - airdrop tier
// 33 - airdrop amount won
//compressedIDs key
// [77-52][51-26][25-0]
// 0-25 - pID
// 26-51 - winPID
// 52-77 - rID
struct EventReturns {
uint256 compressedData;
uint256 compressedIDs;
address winnerAddr; // winner address
bytes32 winnerName; // winner name
uint256 amountWon; // amount won
uint256 newPot; // amount in new pot
uint256 P3DAmount; // amount distributed to p3d
uint256 genAmount; // amount distributed to gen
uint256 potAmount; // amount added to pot
}
struct Player {
address addr; // player address
bytes32 name; // player name
uint256 win; // winnings vault
uint256 gen; // general vault
uint256 aff; // affiliate vault
uint256 lrnd; // last round played
uint256 laff; // last affiliate id used
}
struct PlayerRounds {
uint256 eth; // eth player has added to round (used for eth limiter)
uint256 keys; // keys
uint256 mask; // player mask
uint256 ico; // ICO phase investment
}
struct Round {
uint256 plyr; // pID of player in lead
uint256 team; // tID of team in lead
uint256 end; // time ends/ended
bool ended; // has round end function been ran
uint256 strt; // time round started
uint256 keys; // keys
uint256 eth; // total eth in
uint256 pot; // eth to pot (during round) / final amount paid to winner (after round ends)
uint256 mask; // global mask
uint256 ico; // total eth sent in during ICO phase
uint256 icoGen; // total eth for gen during ICO phase
uint256 icoAvg; // average key price for ICO phase
}
struct TeamFee {
uint256 gen; // % of buy in thats paid to key holders of current round
uint256 p3d; // % of buy in thats paid to p3d holders
}
struct PotSplit {
uint256 gen; // % of pot thats paid to key holders of current round
uint256 p3d; // % of pot thats paid to p3d holders
}
}
//==============================================================================
// | _ _ _ | _ .
// |<(/_\/ (_(_||(_ .
//=======/======================================================================
library F3DKeysCalcShort {
using SafeMath for *;
/**
* @dev calculates number of keys received given X eth
* @param _curEth current amount of eth in contract
* @param _newEth eth being spent
* @return amount of ticket purchased
*/
function keysRec(uint256 _curEth, uint256 _newEth)
internal
pure
returns (uint256)
{
return(keys((_curEth).add(_newEth)).sub(keys(_curEth)));
}
/**
* @dev calculates amount of eth received if you sold X keys
* @param _curKeys current amount of keys that exist
* @param _sellKeys amount of keys you wish to sell
* @return amount of eth received
*/
function ethRec(uint256 _curKeys, uint256 _sellKeys)
internal
pure
returns (uint256)
{
return((eth(_curKeys)).sub(eth(_curKeys.sub(_sellKeys))));
}
/**
* @dev calculates how many keys would exist with given an amount of eth
* @param _eth eth "in contract"
* @return number of keys that would exist
*/
function keys(uint256 _eth)
internal
pure
returns(uint256)
{
return ((((((_eth).mul(1000000000000000000)).mul(312500000000000000000000000)).add(5624988281256103515625000000000000000000000000000000000000000000)).sqrt()).sub(74999921875000000000000000000000)) / (156250000);
}
/**
* @dev calculates how much eth would be in contract given a number of keys
* @param _keys number of keys "in contract"
* @return eth that would exists
*/
function eth(uint256 _keys)
internal
pure
returns(uint256)
{
return ((78125000).mul(_keys.sq()).add(((149999843750000).mul(_keys.mul(1000000000000000000))) / (2))) / ((1000000000000000000).sq());
}
}
//==============================================================================
// . _ _|_ _ _ |` _ _ _ _ .
// || | | (/_| ~|~(_|(_(/__\ .
//==============================================================================
interface PlayerBookInterface {
function getPlayerID(address _addr) external returns (uint256);
function getPlayerName(uint256 _pID) external view returns (bytes32);
function getPlayerLAff(uint256 _pID) external view returns (uint256);
function getPlayerAddr(uint256 _pID) external view returns (address);
function getNameFee() external view returns (uint256);
function registerNameXIDFromDapp(address _addr, bytes32 _name, uint256 _affCode, bool _all) external payable returns(bool, uint256);
function registerNameXaddrFromDapp(address _addr, bytes32 _name, address _affCode, bool _all) external payable returns(bool, uint256);
function registerNameXnameFromDapp(address _addr, bytes32 _name, bytes32 _affCode, bool _all) external payable returns(bool, uint256);
}
/**
* @title -Name Filter- v0.1.9
* ┌┬┐┌─┐┌─┐┌┬┐ ╦╦ ╦╔═╗╔╦╗ ┌─┐┬─┐┌─┐┌─┐┌─┐┌┐┌┌┬┐┌─┐
* │ ├┤ ├─┤│││ ║║ ║╚═╗ ║ ├─┘├┬┘├┤ └─┐├┤ │││ │ └─┐
* ┴ └─┘┴ ┴┴ ┴ ╚╝╚═╝╚═╝ ╩ ┴ ┴└─└─┘└─┘└─┘┘└┘ ┴ └─┘
* _____ _____
* (, / /) /) /) (, / /) /)
* ┌─┐ / _ (/_ // // / _ // _ __ _(/
* ├─┤ ___/___(/_/(__(_/_(/_(/_ ___/__/_)_(/_(_(_/ (_(_(_
* ┴ ┴ / / .-/ _____ (__ /
* (__ / (_/ (, / /)™
* / __ __ __ __ _ __ __ _ _/_ _ _(/
* ┌─┐┬─┐┌─┐┌┬┐┬ ┬┌─┐┌┬┐ /__/ (_(__(_)/ (_/_)_(_)/ (_(_(_(__(/_(_(_
* ├─┘├┬┘│ │ │││ ││ │ (__ / .-/ © Jekyll Island Inc. 2018
* ┴ ┴└─└─┘─┴┘└─┘└─┘ ┴ (_/
* _ __ _ ____ ____ _ _ _____ ____ ___
*=============| |\ | / /\ | |\/| | |_ =====| |_ | | | | | | | |_ | |_)==============*
*=============|_| \| /_/--\ |_| | |_|__=====|_| |_| |_|__ |_| |_|__ |_| \==============*
*
* ╔═╗┌─┐┌┐┌┌┬┐┬─┐┌─┐┌─┐┌┬┐ ╔═╗┌─┐┌┬┐┌─┐ ┌──────────┐
* ║ │ ││││ │ ├┬┘├─┤│ │ ║ │ │ ││├┤ │ Inventor │
* ╚═╝└─┘┘└┘ ┴ ┴└─┴ ┴└─┘ ┴ ╚═╝└─┘─┴┘└─┘ └──────────┘
*/
library NameFilter {
/**
* @dev filters name strings
* -converts uppercase to lower case.
* -makes sure it does not start/end with a space
* -makes sure it does not contain multiple spaces in a row
* -cannot be only numbers
* -cannot start with 0x
* -restricts characters to A-Z, a-z, 0-9, and space.
* @return reprocessed string in bytes32 format
*/
function nameFilter(string _input)
internal
pure
returns(bytes32)
{
bytes memory _temp = bytes(_input);
uint256 _length = _temp.length;
//sorry limited to 32 characters
require (_length <= 32 && _length > 0, "string must be between 1 and 32 characters");
// make sure it doesnt start with or end with space
require(_temp[0] != 0x20 && _temp[_length-1] != 0x20, "string cannot start or end with space");
// make sure first two characters are not 0x
if (_temp[0] == 0x30)
{
require(_temp[1] != 0x78, "string cannot start with 0x");
require(_temp[1] != 0x58, "string cannot start with 0X");
}
// create a bool to track if we have a non number character
bool _hasNonNumber;
// convert & check
for (uint256 i = 0; i < _length; i++)
{
// if its uppercase A-Z
if (_temp[i] > 0x40 && _temp[i] < 0x5b)
{
// convert to lower case a-z
_temp[i] = byte(uint(_temp[i]) + 32);
// we have a non number
if (_hasNonNumber == false)
_hasNonNumber = true;
} else {
require
(
// require character is a space
_temp[i] == 0x20 ||
// OR lowercase a-z
(_temp[i] > 0x60 && _temp[i] < 0x7b) ||
// or 0-9
(_temp[i] > 0x2f && _temp[i] < 0x3a),
"string contains invalid characters"
);
// make sure theres not 2x spaces in a row
if (_temp[i] == 0x20)
require( _temp[i+1] != 0x20, "string cannot contain consecutive spaces");
// see if we have a character other than a number
if (_hasNonNumber == false && (_temp[i] < 0x30 || _temp[i] > 0x39))
_hasNonNumber = true;
}
}
require(_hasNonNumber == true, "string cannot be only numbers");
bytes32 _ret;
assembly {
_ret := mload(add(_temp, 32))
}
return (_ret);
}
}
/**
* @title SafeMath v0.1.9
* @dev Math operations with safety checks that throw on error
* change notes: original SafeMath library from OpenZeppelin modified by Inventor
* - added sqrt
* - added sq
* - added pwr
* - changed asserts to requires with error log outputs
* - removed div, its useless
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b)
internal
pure
returns (uint256 c)
{
if (a == 0) {
return 0;
}
c = a * b;
require(c / a == b, "SafeMath mul failed");
return c;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
require(b <= a, "SafeMath sub failed");
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b)
internal
pure
returns (uint256 c)
{
c = a + b;
require(c >= a, "SafeMath add failed");
return c;
}
/**
* @dev gives square root of given x.
*/
function sqrt(uint256 x)
internal
pure
returns (uint256 y)
{
uint256 z = ((add(x,1)) / 2);
y = x;
while (z < y)
{
y = z;
z = ((add((x / z),z)) / 2);
}
}
/**
* @dev gives square. multiplies x by x
*/
function sq(uint256 x)
internal
pure
returns (uint256)
{
return (mul(x,x));
}
/**
* @dev x to the power of y
*/
function pwr(uint256 x, uint256 y)
internal
pure
returns (uint256)
{
if (x==0)
return (0);
else if (y==0)
return (1);
else
{
uint256 z = x;
for (uint256 i=1; i < y; i++)
z = mul(z,x);
return (z);
}
}
}
|
* @dev ends the round. manages paying out winner/splitting up pot/ setup local rID grab our winning player and team id's grab our pot amount calculate our winner share, community rewards, gen share, p3d share, and amount reserved for next pot calculate ppt for round mask
|
function endRound(F3Ddatasets.EventReturns memory _eventData_)
private
returns (F3Ddatasets.EventReturns)
{
uint256 _rID = rID_;
uint256 _winPID = round_[_rID].plyr;
uint256 _winTID = round_[_rID].team;
uint256 _pot = round_[_rID].pot;
uint256 _win = (_pot.mul(48)) / 100;
uint256 _com = (_pot / 50);
uint256 _gen = (_pot.mul(potSplit_[_winTID].gen)) / 100;
uint256 _p3d = (_pot.mul(potSplit_[_winTID].p3d)) / 100;
uint256 _res = (((_pot.sub(_win)).sub(_com)).sub(_gen)).sub(_p3d);
uint256 _ppt = (_gen.mul(1000000000000000000)) / (round_[_rID].keys);
uint256 _dust = _gen.sub((_ppt.mul(round_[_rID].keys)) / 1000000000000000000);
if (_dust > 0)
{
_gen = _gen.sub(_dust);
_res = _res.add(_dust);
}
coin_base.transfer(_com);
_res = _res.add(_p3d / 100);
_eventData_.compressedIDs = _eventData_.compressedIDs + (_winPID * 100000000000000000000000000) + (_winTID * 100000000000000000);
_eventData_.winnerAddr = plyr_[_winPID].addr;
_eventData_.winnerName = plyr_[_winPID].name;
_eventData_.amountWon = _win;
_eventData_.genAmount = _gen;
_eventData_.P3DAmount = _p3d;
_eventData_.newPot = _res;
_rID++;
round_[_rID].strt = now;
round_[_rID].end = now.add(rndInit_).add(rndGap_);
round_[_rID].pot = _res;
return(_eventData_);
}
| 14,692,742 |
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pragma solidity ^0.4.24;
import './SafeMath.sol';
/**
* Here is an example of upgradable contract, consisting of two parts:
* - Data Contract keeps the resources (data) and is controlled by the Handler contract;
* - Handler contract (implements Handler interface) defines operations and provides services. This contract can be upgraded;
*
* @author Kaidong Wu ([email protected])
* version 0.1.6
*/
/**
* The example of Data contract.
* There are two parts in the Data contract:
* - Management Data: owner’s address, Handler Contract’s address and an boolean indicating whether the contract is initialized or not.
* - Resource Data: all resources that the contract needs to keep and mange. Handler control them via getters and setters.
*/
contract DataContract {
using SafeMath for uint256;
/** Management Data */
// Owner and Handler Contract
address private owner;
address private handlerAddr;
// Getter permitted
mapping(address => bool) private addressPermissions;
// Ready?
bool private ok;
/** Resource Data - Member variables */
/**
* Constructor.
* Set owner and set this contract to uninitialized.
*/
constructor () public {
owner = msg.sender;
ok = false;
addressPermissions[owner] = true;
}
/** Modifiers */
/**
* Check if msg.sender is the Handler contract. It is used for setters.
* If fail, throw PermissionException.
*/
modifier onlyHandler {
require(msg.sender == handlerAddr, "Only Handler contract can call this function!");
_;
}
/**
* Check if msg.sender is not permitted to call getters. It is used for getters (if necessary).
* If fail, throw GetterPermissionException.
*/
modifier allowedAddress {
require(addressPermissions[msg.sender], "Do not have the permission!");
_;
}
/**
* Check if the contract is working.
* If fail, throw UninitializationException.
*/
modifier ready {
require(ok, "Data contract has not been initialized!");
_;
}
/** Management Functions */
/**
* Initializer. just the Handler contract can call it.
*
* exception PermissionException msg.sender is not the Handler contract.
* exception ReInitializationException contract has been initialized.
*
* @return if the initialization succeeds.
*/
function initialize (/** Parameters */) onlyHandler external returns(bool) {
require(!ok, "Data Contract has been initialized!");
/** Set variables in Data Contract */
ok = true;
return ok;
}
/**
* Set Handler contract for the contract. Owner must set one to initialize the Data contract.
*
* @param _handlerAddr address of a deployed Handler contract.
*
* exception PermissionException msg.sender is not the owner.
*
* @return if Handler contract is successfully set.
*/
function setHandler (address _handlerAddr) public {
require(msg.sender == owner, "Permission error!");
addressPermissions[_handlerAddr] = true;
addressPermissions[handlerAddr] = false;
handlerAddr = _handlerAddr;
}
/**
* Check if the contract has been initialized.
*
* @return if the contract has been initialized.
*/
function isReady () view public returns(bool) {
return ok;
}
/** Getters and setters of member variables */
}
/**
* Handler Contract interface.
* Handler Contract defines bussiness related functions.
* Use the interface to ensure that your external services are always supported.
* Because of function live(), we design IHandler as an abstract contract rather than a true interface.
*
* Handler Contract is deployed as following steps:
* 1. Deploy Data Contract;
* 2. Deploy a Handler Contract at a given address specified in the Data Contract;
* 3. Register the Handler Contract address by calling setHandler() in the Data Contract;
* 4. Initialize Data Contract if haven’t done it already.
*/
contract IHandler {
/**
* Initialize the Data Contract.
*/
function initialize (/** Parameters */) public;
/**
* Let Handler Contract self-destruct.
*/
function done () external;
/**
* Check if the Handler Contract is a working Handler Contract.
* It is used to prove the contract is a Handler Contract.
*
* @return always true.
*/
function live () pure public returns(bool) {
return true;
}
/** Business-related functions */
/** Business-related Events */
}
/**
* An example implementation of Handler Contract interface
*/
contract Handler is IHandler {
using SafeMath for uint256;
/** Management data */
// Owner
address private owner;
// Data Contract
address private beanAddr;
// Cache of data.isReady()
bool private ready;
/**
* Constructor.
*
* @param _beanAddr address of the Data Contract.
*/
constructor (address _beanAddr) public {
owner = msg.sender;
beanAddr = _beanAddr;
ready = DataContract(beanAddr).isReady();
}
/**
* Initialize the data contarct.
*
* exception PermissionException msg.sender is not the owner.
* exception ReInitializationException Data contract has been initialized.
* exception InitializationException Initialization error.
*/
function initialize (/** Parameters */) public {
require(msg.sender == owner, "Permission error!");
require(!ready, "Data Contract has been initialized!");
DataContract dc = DataContract(beanAddr);
require(dc.initialize(/** Parameters */), "Initialization error!");
require(ready = dc.isReady(), "Initialization error!");
}
/**
* Let Handler Contract self-destruct.
*
* exception PermissionException msg.sender is not the owner.
*/
function done() external{
require(msg.sender == owner, "Permission error!");
selfdestruct(owner);
}
/** Implementations of business-related functions */
}
|
* Constructor. @param _beanAddr address of the Data Contract./
|
constructor (address _beanAddr) public {
owner = msg.sender;
beanAddr = _beanAddr;
ready = DataContract(beanAddr).isReady();
}
| 12,788,278 |
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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import "./interfaces/IOwnership.sol";
import "./interfaces/IRegistry.sol";
contract Registry is IRegistry {
event ExistenceSet(address indexed template, address indexed target);
event NewMarketRegistered(address market);
event FactorySet(address factory);
event CDSSet(address indexed target, address cds);
address public factory;
mapping(address => address) cds; //index => cds
mapping(address => bool) markets; //true if the market is registered
mapping(address => mapping(address => bool)) existence; //true if the certain id is already registered in market
address[] allMarkets;
IOwnership public immutable ownership;
modifier onlyOwner() {
require(
ownership.owner() == msg.sender,
"Caller is not allowed to operate"
);
_;
}
constructor(address _ownership) {
require(_ownership != address(0), "ERROR: ZERO_ADDRESS");
ownership = IOwnership(_ownership);
}
/**
* @notice Set the factory address and allow it to regiser a new market
* @param _factory factory address
*/
function setFactory(address _factory) external override onlyOwner {
require(_factory != address(0), "ERROR: ZERO_ADDRESS");
factory = _factory;
emit FactorySet(_factory);
}
/**
* @notice Register a new market.
* @param _market market address to register
*/
function supportMarket(address _market) external override {
require(!markets[_market], "ERROR: ALREADY_REGISTERED");
require(
msg.sender == factory || msg.sender == ownership.owner(),
"ERROR: UNAUTHORIZED_CALLER"
);
require(_market != address(0), "ERROR: ZERO_ADDRESS");
allMarkets.push(_market);
markets[_market] = true;
emit NewMarketRegistered(_market);
}
/**
* @notice Register a new target address id and template address set.
* @param _template template address
* @param _target target address
*/
function setExistence(address _template, address _target)
external
override
{
require(
msg.sender == factory || msg.sender == ownership.owner(),
"ERROR: UNAUTHORIZED_CALLER"
);
existence[_template][_target] = true;
emit ExistenceSet(_template, _target);
}
/**
* @notice Register the cds address for a particular address
* @param _address address to set CDS
* @param _cds CDS contract address
*/
function setCDS(address _address, address _cds)
external
override
onlyOwner
{
require(_cds != address(0), "ERROR: ZERO_ADDRESS");
cds[_address] = _cds;
emit CDSSet(_address, _cds);
}
/**
* @notice Get the cds address for a particular address
* @param _address address covered by CDS
* @return CDS contract address
*/
function getCDS(address _address) external view override returns (address) {
address _addr = cds[_address];
if (_addr == address(0)) {
return cds[address(0)];
} else {
return _addr;
}
}
/**
* @notice Get whether the target address and id set exists
* @param _template template address
* @param _target target address
* @return true if the id within the market already exists
*/
function confirmExistence(address _template, address _target)
external
view
override
returns (bool)
{
return existence[_template][_target];
}
/**
* @notice Get whether market is registered
* @param _market market address to inquire
* @return true if listed
*/
function isListed(address _market) external view override returns (bool) {
return markets[_market];
}
/**
* @notice Get all market
* @return all markets
*/
function getAllMarkets() external view returns (address[] memory) {
return allMarkets;
}
}
pragma solidity 0.8.10;
//SPDX-License-Identifier: MIT
interface IOwnership {
function owner() external view returns (address);
function futureOwner() external view returns (address);
function commitTransferOwnership(address newOwner) external;
function acceptTransferOwnership() external;
}
pragma solidity 0.8.10;
interface IRegistry {
function isListed(address _market) external view returns (bool);
function getCDS(address _address) external view returns (address);
function confirmExistence(address _template, address _target)
external
view
returns (bool);
//onlyOwner
function setFactory(address _factory) external;
function supportMarket(address _market) external;
function setExistence(address _template, address _target) external;
function setCDS(address _address, address _cds) external;
}
|
true if the market is registered
|
mapping(address => bool) markets;
| 11,944,917 |
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./full_match/43114/0xc74954c66908ec8a445D584666926964955028f7/sources/StakingPool.sol
|
Maximum emission rate for the StakingPool.
|
uint256 public constant MAX_REWARD_PER_TIME = 0.2 ether;
| 4,540,082 |
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./partial_match/1/0xDB7346f9Cc85ED5c81b7daE8A2Da86255c108E6F/sources/SUCKMYDICK.sol
|
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. This internal function is equivalent to `approve`, and can be used to e.g. set automatic allowances for certain subsystems, etc. Emits an {Approval} event. Requirements: - `owner` cannot be the zero address. - `spender` cannot be the zero address./
|
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
| 2,652,343 |
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./partial_match/4/0x5383dFb117307f0e76365E8350582e6457A7632e/sources/SantaGifting.sol
|
* デポジットを行う 引数１：システムで発行されたID 引数２：送金額（wei で指定） 引数３：送金先アドレス ※ 送金額＋手数料分のETHを送ってもらう必要がある df121a97/ 既にIDが登録されていたら変更は不可 実際に送られた ether が送金額＋手数料よりも低ければエラー 送金情報を登録する
|
function etherDeposit(bytes32 id, uint256 amount) payable public {
require(_transferInfo[id].from == 0x0, "ID is already exists.");
require(amount + fee <= msg.value, "Value is too low.");
_transferInfo[id].from = msg.sender;
_transferInfo[id].to = 0x0;
_transferInfo[id].amount = amount;
_transferInfo[id].date = block.timestamp;
emit Deposit(id, msg.sender, amount);
}
| 8,557,613 |
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pragma solidity 0.4.18;
/// @title Ownable
/// @dev The Ownable contract has an owner address, and provides basic authorization control functions,
/// this simplifies the implementation of "user permissions".
/// @dev Based on OpenZeppelin's Ownable.
contract Ownable {
address public owner;
address public newOwnerCandidate;
event OwnershipRequested(address indexed _by, address indexed _to);
event OwnershipTransferred(address indexed _from, address indexed _to);
/// @dev Constructor sets the original `owner` of the contract to the sender account.
function Ownable() public {
owner = msg.sender;
}
/// @dev Reverts if called by any account other than the owner.
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
modifier onlyOwnerCandidate() {
require(msg.sender == newOwnerCandidate);
_;
}
/// @dev Proposes to transfer control of the contract to a newOwnerCandidate.
/// @param _newOwnerCandidate address The address to transfer ownership to.
function requestOwnershipTransfer(address _newOwnerCandidate) external onlyOwner {
require(_newOwnerCandidate != address(0));
newOwnerCandidate = _newOwnerCandidate;
OwnershipRequested(msg.sender, newOwnerCandidate);
}
/// @dev Accept ownership transfer. This method needs to be called by the perviously proposed owner.
function acceptOwnership() external onlyOwnerCandidate {
address previousOwner = owner;
owner = newOwnerCandidate;
newOwnerCandidate = address(0);
OwnershipTransferred(previousOwner, owner);
}
}
/// @title Math operations with safety checks
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
require(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// require(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// require(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
function max64(uint64 a, uint64 b) internal pure returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal pure returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function toPower2(uint256 a) internal pure returns (uint256) {
return mul(a, a);
}
function sqrt(uint256 a) internal pure returns (uint256) {
uint256 c = (a + 1) / 2;
uint256 b = a;
while (c < b) {
b = c;
c = (a / c + c) / 2;
}
return b;
}
}
/// @title ERC Token Standard #20 Interface (https://github.com/ethereum/EIPs/issues/20)
contract ERC20 {
uint public totalSupply;
function balanceOf(address _owner) constant public returns (uint balance);
function transfer(address _to, uint _value) public returns (bool success);
function transferFrom(address _from, address _to, uint _value) public returns (bool success);
function approve(address _spender, uint _value) public returns (bool success);
function allowance(address _owner, address _spender) public constant returns (uint remaining);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
/// @title ERC Token Standard #677 Interface (https://github.com/ethereum/EIPs/issues/677)
contract ERC677 is ERC20 {
function transferAndCall(address to, uint value, bytes data) public returns (bool ok);
event TransferAndCall(address indexed from, address indexed to, uint value, bytes data);
}
/// @title ERC223Receiver Interface
/// @dev Based on the specs form: https://github.com/ethereum/EIPs/issues/223
contract ERC223Receiver {
function tokenFallback(address _sender, uint _value, bytes _data) external returns (bool ok);
}
/// @title Basic ERC20 token contract implementation.
/// @dev Based on OpenZeppelin's StandardToken.
contract BasicToken is ERC20 {
using SafeMath for uint256;
uint256 public totalSupply;
mapping (address => mapping (address => uint256)) allowed;
mapping (address => uint256) balances;
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
/// @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
/// @param _spender address The address which will spend the funds.
/// @param _value uint256 The amount of tokens to be spent.
function approve(address _spender, uint256 _value) public returns (bool) {
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md#approve (see NOTE)
if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) {
revert();
}
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/// @dev Function to check the amount of tokens that an owner allowed to a spender.
/// @param _owner address The address which owns the funds.
/// @param _spender address The address which will spend the funds.
/// @return uint256 specifying the amount of tokens still available for the spender.
function allowance(address _owner, address _spender) constant public returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/// @dev Gets the balance of the specified address.
/// @param _owner address The address to query the the balance of.
/// @return uint256 representing the amount owned by the passed address.
function balanceOf(address _owner) constant public returns (uint256 balance) {
return balances[_owner];
}
/// @dev Transfer token to a specified address.
/// @param _to address The address to transfer to.
/// @param _value uint256 The amount to be transferred.
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/// @dev Transfer tokens from one address to another.
/// @param _from address The address which you want to send tokens from.
/// @param _to address The address which you want to transfer to.
/// @param _value uint256 the amount of tokens to be transferred.
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
var _allowance = allowed[_from][msg.sender];
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
}
/// @title Standard677Token implentation, base on https://github.com/ethereum/EIPs/issues/677
contract Standard677Token is ERC677, BasicToken {
/// @dev ERC223 safe token transfer from one address to another
/// @param _to address the address which you want to transfer to.
/// @param _value uint256 the amount of tokens to be transferred.
/// @param _data bytes data that can be attached to the token transation
function transferAndCall(address _to, uint _value, bytes _data) public returns (bool) {
require(super.transfer(_to, _value)); // do a normal token transfer
TransferAndCall(msg.sender, _to, _value, _data);
//filtering if the target is a contract with bytecode inside it
if (isContract(_to)) return contractFallback(_to, _value, _data);
return true;
}
/// @dev called when transaction target is a contract
/// @param _to address the address which you want to transfer to.
/// @param _value uint256 the amount of tokens to be transferred.
/// @param _data bytes data that can be attached to the token transation
function contractFallback(address _to, uint _value, bytes _data) private returns (bool) {
ERC223Receiver receiver = ERC223Receiver(_to);
require(receiver.tokenFallback(msg.sender, _value, _data));
return true;
}
/// @dev check if the address is contract
/// assemble the given address bytecode. If bytecode exists then the _addr is a contract.
/// @param _addr address the address to check
function isContract(address _addr) private constant returns (bool is_contract) {
// retrieve the size of the code on target address, this needs assembly
uint length;
assembly { length := extcodesize(_addr) }
return length > 0;
}
}
/// @title Token holder contract.
contract TokenHolder is Ownable {
/// @dev Allow the owner to transfer out any accidentally sent ERC20 tokens.
/// @param _tokenAddress address The address of the ERC20 contract.
/// @param _amount uint256 The amount of tokens to be transferred.
function transferAnyERC20Token(address _tokenAddress, uint256 _amount) public onlyOwner returns (bool success) {
return ERC20(_tokenAddress).transfer(owner, _amount);
}
}
/// @title Colu Local Network contract.
/// @author Tal Beja.
contract ColuLocalNetwork is Ownable, Standard677Token, TokenHolder {
using SafeMath for uint256;
string public constant name = "Colu Local Network";
string public constant symbol = "CLN";
// Using same decimals value as ETH (makes ETH-CLN conversion much easier).
uint8 public constant decimals = 18;
// States whether token transfers is allowed or not.
// Used during token sale.
bool public isTransferable = false;
event TokensTransferable();
modifier transferable() {
require(msg.sender == owner || isTransferable);
_;
}
/// @dev Creates all tokens and gives them to the owner.
function ColuLocalNetwork(uint256 _totalSupply) public {
totalSupply = _totalSupply;
balances[msg.sender] = totalSupply;
}
/// @dev start transferable mode.
function makeTokensTransferable() external onlyOwner {
if (isTransferable) {
return;
}
isTransferable = true;
TokensTransferable();
}
/// @dev Same ERC20 behavior, but reverts if not transferable.
/// @param _spender address The address which will spend the funds.
/// @param _value uint256 The amount of tokens to be spent.
function approve(address _spender, uint256 _value) public transferable returns (bool) {
return super.approve(_spender, _value);
}
/// @dev Same ERC20 behavior, but reverts if not transferable.
/// @param _to address The address to transfer to.
/// @param _value uint256 The amount to be transferred.
function transfer(address _to, uint256 _value) public transferable returns (bool) {
return super.transfer(_to, _value);
}
/// @dev Same ERC20 behavior, but reverts if not transferable.
/// @param _from address The address to send tokens from.
/// @param _to address The address to transfer to.
/// @param _value uint256 the amount of tokens to be transferred.
function transferFrom(address _from, address _to, uint256 _value) public transferable returns (bool) {
return super.transferFrom(_from, _to, _value);
}
/// @dev Same ERC677 behavior, but reverts if not transferable.
/// @param _to address The address to transfer to.
/// @param _value uint256 The amount to be transferred.
/// @param _data bytes data to send to receiver if it is a contract.
function transferAndCall(address _to, uint _value, bytes _data) public transferable returns (bool success) {
return super.transferAndCall(_to, _value, _data);
}
}
/// @title Standard ERC223 Token Receiver implementing tokenFallback function and tokenPayable modifier
contract Standard223Receiver is ERC223Receiver {
Tkn tkn;
struct Tkn {
address addr;
address sender; // the transaction caller
uint256 value;
}
bool __isTokenFallback;
modifier tokenPayable {
require(__isTokenFallback);
_;
}
/// @dev Called when the receiver of transfer is contract
/// @param _sender address the address of tokens sender
/// @param _value uint256 the amount of tokens to be transferred.
/// @param _data bytes data that can be attached to the token transation
function tokenFallback(address _sender, uint _value, bytes _data) external returns (bool ok) {
if (!supportsToken(msg.sender)) {
return false;
}
// Problem: This will do a sstore which is expensive gas wise. Find a way to keep it in memory.
// Solution: Remove the the data
tkn = Tkn(msg.sender, _sender, _value);
__isTokenFallback = true;
if (!address(this).delegatecall(_data)) {
__isTokenFallback = false;
return false;
}
// avoid doing an overwrite to .token, which would be more expensive
// makes accessing .tkn values outside tokenPayable functions unsafe
__isTokenFallback = false;
return true;
}
function supportsToken(address token) public constant returns (bool);
}
/// @title TokenOwnable
/// @dev The TokenOwnable contract adds a onlyTokenOwner modifier as a tokenReceiver with ownable addaptation
contract TokenOwnable is Standard223Receiver, Ownable {
/// @dev Reverts if called by any account other than the owner for token sending.
modifier onlyTokenOwner() {
require(tkn.sender == owner);
_;
}
}
/// @title Vesting trustee contract for Colu Local Network.
/// @dev This Contract can't be TokenHolder, since it will allow its owner to drain its vested tokens.
/// @dev This means that any token sent to it different than ColuLocalNetwork is basicly stucked here forever.
/// @dev ColuLocalNetwork that sent here (by mistake) can withdrawn using the grant method.
contract VestingTrustee is TokenOwnable {
using SafeMath for uint256;
// Colu Local Network contract.
ColuLocalNetwork public cln;
// Vesting grant for a speicifc holder.
struct Grant {
uint256 value;
uint256 start;
uint256 cliff;
uint256 end;
uint256 installmentLength; // In seconds.
uint256 transferred;
bool revokable;
}
// Holder to grant information mapping.
mapping (address => Grant) public grants;
// Total tokens vested.
uint256 public totalVesting;
event NewGrant(address indexed _from, address indexed _to, uint256 _value);
event TokensUnlocked(address indexed _to, uint256 _value);
event GrantRevoked(address indexed _holder, uint256 _refund);
uint constant OK = 1;
uint constant ERR_INVALID_VALUE = 10001;
uint constant ERR_INVALID_VESTED = 10002;
uint constant ERR_INVALID_TRANSFERABLE = 10003;
event Error(address indexed sender, uint error);
/// @dev Constructor that initializes the address of the Colu Local Network contract.
/// @param _cln ColuLocalNetwork The address of the previously deployed Colu Local Network contract.
function VestingTrustee(ColuLocalNetwork _cln) public {
require(_cln != address(0));
cln = _cln;
}
/// @dev Allow only cln token to be tokenPayable
/// @param token the token to check
function supportsToken(address token) public constant returns (bool) {
return (cln == token);
}
/// @dev Grant tokens to a specified address.
/// @param _to address The holder address.
/// @param _start uint256 The beginning of the vesting period (timestamp).
/// @param _cliff uint256 When the first installment is made (timestamp).
/// @param _end uint256 The end of the vesting period (timestamp).
/// @param _installmentLength uint256 The length of each vesting installment (in seconds).
/// @param _revokable bool Whether the grant is revokable or not.
function grant(address _to, uint256 _start, uint256 _cliff, uint256 _end,
uint256 _installmentLength, bool _revokable)
external onlyTokenOwner tokenPayable {
require(_to != address(0));
require(_to != address(this)); // Protect this contract from receiving a grant.
uint256 value = tkn.value;
require(value > 0);
// Require that every holder can be granted tokens only once.
require(grants[_to].value == 0);
// Require for time ranges to be consistent and valid.
require(_start <= _cliff && _cliff <= _end);
// Require installment length to be valid and no longer than (end - start).
require(_installmentLength > 0 && _installmentLength <= _end.sub(_start));
// Grant must not exceed the total amount of tokens currently available for vesting.
require(totalVesting.add(value) <= cln.balanceOf(address(this)));
// Assign a new grant.
grants[_to] = Grant({
value: value,
start: _start,
cliff: _cliff,
end: _end,
installmentLength: _installmentLength,
transferred: 0,
revokable: _revokable
});
// Since tokens have been granted, increase the total amount vested.
totalVesting = totalVesting.add(value);
NewGrant(msg.sender, _to, value);
}
/// @dev Grant tokens to a specified address.
/// @param _to address The holder address.
/// @param _value uint256 The amount of tokens to be granted.
/// @param _start uint256 The beginning of the vesting period (timestamp).
/// @param _cliff uint256 When the first installment is made (timestamp).
/// @param _end uint256 The end of the vesting period (timestamp).
/// @param _installmentLength uint256 The length of each vesting installment (in seconds).
/// @param _revokable bool Whether the grant is revokable or not.
function grant(address _to, uint256 _value, uint256 _start, uint256 _cliff, uint256 _end,
uint256 _installmentLength, bool _revokable)
external onlyOwner {
require(_to != address(0));
require(_to != address(this)); // Protect this contract from receiving a grant.
require(_value > 0);
// Require that every holder can be granted tokens only once.
require(grants[_to].value == 0);
// Require for time ranges to be consistent and valid.
require(_start <= _cliff && _cliff <= _end);
// Require installment length to be valid and no longer than (end - start).
require(_installmentLength > 0 && _installmentLength <= _end.sub(_start));
// Grant must not exceed the total amount of tokens currently available for vesting.
require(totalVesting.add(_value) <= cln.balanceOf(address(this)));
// Assign a new grant.
grants[_to] = Grant({
value: _value,
start: _start,
cliff: _cliff,
end: _end,
installmentLength: _installmentLength,
transferred: 0,
revokable: _revokable
});
// Since tokens have been granted, increase the total amount vested.
totalVesting = totalVesting.add(_value);
NewGrant(msg.sender, _to, _value);
}
/// @dev Revoke the grant of tokens of a specifed address.
/// @dev Unlocked tokens will be sent to the grantee, the rest is transferred to the trustee's owner.
/// @param _holder The address which will have its tokens revoked.
function revoke(address _holder) public onlyOwner {
Grant memory grant = grants[_holder];
// Grant must be revokable.
require(grant.revokable);
// Get the total amount of vested tokens, acccording to grant.
uint256 vested = calculateVestedTokens(grant, now);
// Calculate the untransferred vested tokens.
uint256 transferable = vested.sub(grant.transferred);
if (transferable > 0) {
// Update transferred and total vesting amount, then transfer remaining vested funds to holder.
grant.transferred = grant.transferred.add(transferable);
totalVesting = totalVesting.sub(transferable);
require(cln.transfer(_holder, transferable));
TokensUnlocked(_holder, transferable);
}
// Calculate amount of remaining tokens that can still be returned.
uint256 refund = grant.value.sub(grant.transferred);
// Remove the grant.
delete grants[_holder];
// Update total vesting amount and transfer previously calculated tokens to owner.
totalVesting = totalVesting.sub(refund);
require(cln.transfer(msg.sender, refund));
GrantRevoked(_holder, refund);
}
/// @dev Calculate the amount of ready tokens of a holder.
/// @param _holder address The address of the holder.
/// @return a uint256 Representing a holder's total amount of vested tokens.
function readyTokens(address _holder) public constant returns (uint256) {
Grant memory grant = grants[_holder];
if (grant.value == 0) {
return 0;
}
uint256 vested = calculateVestedTokens(grant, now);
if (vested == 0) {
return 0;
}
return vested.sub(grant.transferred);
}
/// @dev Calculate the total amount of vested tokens of a holder at a given time.
/// @param _holder address The address of the holder.
/// @param _time uint256 The specific time to calculate against.
/// @return a uint256 Representing a holder's total amount of vested tokens.
function vestedTokens(address _holder, uint256 _time) public constant returns (uint256) {
Grant memory grant = grants[_holder];
if (grant.value == 0) {
return 0;
}
return calculateVestedTokens(grant, _time);
}
/// @dev Calculate amount of vested tokens at a specifc time.
/// @param _grant Grant The vesting grant.
/// @param _time uint256 The time to be checked
/// @return An uint256 Representing the amount of vested tokens of a specific grant.
function calculateVestedTokens(Grant _grant, uint256 _time) private pure returns (uint256) {
// If we're before the cliff, then nothing is vested.
if (_time < _grant.cliff) {
return 0;
}
// If we're after the end of the vesting period - everything is vested.
if (_time >= _grant.end) {
return _grant.value;
}
// Calculate amount of installments past until now.
//
// NOTE: result gets floored because of integer division.
uint256 installmentsPast = _time.sub(_grant.start).div(_grant.installmentLength);
// Calculate amount of days in entire vesting period.
uint256 vestingDays = _grant.end.sub(_grant.start);
// Calculate and return the number of tokens according to vesting days that have passed.
return _grant.value.mul(installmentsPast.mul(_grant.installmentLength)).div(vestingDays);
}
/// @dev Unlock vested tokens and transfer them to the grantee.
/// @return a uint The success or error code.
function unlockVestedTokens() external returns (uint) {
return unlockVestedTokens(msg.sender);
}
/// @dev Unlock vested tokens and transfer them to the grantee (helper function).
/// @param _grantee address The address of the grantee.
/// @return a uint The success or error code.
function unlockVestedTokens(address _grantee) private returns (uint) {
Grant storage grant = grants[_grantee];
// Make sure the grant has tokens available.
if (grant.value == 0) {
Error(_grantee, ERR_INVALID_VALUE);
return ERR_INVALID_VALUE;
}
// Get the total amount of vested tokens, acccording to grant.
uint256 vested = calculateVestedTokens(grant, now);
if (vested == 0) {
Error(_grantee, ERR_INVALID_VESTED);
return ERR_INVALID_VESTED;
}
// Make sure the holder doesn't transfer more than what he already has.
uint256 transferable = vested.sub(grant.transferred);
if (transferable == 0) {
Error(_grantee, ERR_INVALID_TRANSFERABLE);
return ERR_INVALID_TRANSFERABLE;
}
// Update transferred and total vesting amount, then transfer remaining vested funds to holder.
grant.transferred = grant.transferred.add(transferable);
totalVesting = totalVesting.sub(transferable);
require(cln.transfer(_grantee, transferable));
TokensUnlocked(_grantee, transferable);
return OK;
}
/// @dev batchUnlockVestedTokens vested tokens and transfer them to the grantees.
/// @param _grantees address[] The addresses of the grantees.
/// @return a boo if success.
function batchUnlockVestedTokens(address[] _grantees) external onlyOwner returns (bool success) {
for (uint i = 0; i<_grantees.length; i++) {
unlockVestedTokens(_grantees[i]);
}
return true;
}
/// @dev Allow the owner to transfer out any accidentally sent ERC20 tokens.
/// @param _tokenAddress address The address of the ERC20 contract.
/// @param _amount uint256 The amount of tokens to be transferred.
function withdrawERC20(address _tokenAddress, uint256 _amount) public onlyOwner returns (bool success) {
if (_tokenAddress == address(cln)) {
// If the token is cln, allow to withdraw only non vested tokens.
uint256 availableCLN = cln.balanceOf(this).sub(totalVesting);
require(_amount <= availableCLN);
}
return ERC20(_tokenAddress).transfer(owner, _amount);
}
}
/// @title Colu Local Network sale contract.
/// @author Tal Beja.
contract ColuLocalNetworkSale is Ownable, TokenHolder {
using SafeMath for uint256;
// External parties:
// Colu Local Network contract.
ColuLocalNetwork public cln;
// Vesting contract for presale participants.
VestingTrustee public trustee;
// Received funds are forwarded to this address.
address public fundingRecipient;
// Post-TDE multisig addresses.
address public communityPoolAddress;
address public futureDevelopmentPoolAddress;
address public stakeholdersPoolAddress;
// Colu Local Network decimals.
// Using same decimals value as ETH (makes ETH-CLN conversion much easier).
// This is the same as in Colu Local Network contract.
uint256 public constant TOKEN_DECIMALS = 10 ** 18;
// Additional Lockup Allocation Pool
uint256 public constant ALAP = 40701333592592592592614116;
// Maximum number of tokens in circulation: 1.5 trillion.
uint256 public constant MAX_TOKENS = 15 * 10 ** 8 * TOKEN_DECIMALS + ALAP;
// Maximum tokens offered in the sale (35%) + ALAP.
uint256 public constant MAX_TOKENS_SOLD = 525 * 10 ** 6 * TOKEN_DECIMALS + ALAP;
// Maximum tokens offered in the presale (from the initial 35% offered tokens) + ALAP.
uint256 public constant MAX_PRESALE_TOKENS_SOLD = 2625 * 10 ** 5 * TOKEN_DECIMALS + ALAP;
// Tokens allocated for Community pool (30%).
uint256 public constant COMMUNITY_POOL = 45 * 10 ** 7 * TOKEN_DECIMALS;
// Tokens allocated for Future development pool (29%).
uint256 public constant FUTURE_DEVELOPMENT_POOL = 435 * 10 ** 6 * TOKEN_DECIMALS;
// Tokens allocated for Stakeholdes pool (6%).
uint256 public constant STAKEHOLDERS_POOL = 9 * 10 ** 7 * TOKEN_DECIMALS;
// CLN to ETH ratio.
uint256 public constant CLN_PER_ETH = 8600;
// Sale start, end blocks (time ranges)
uint256 public constant SALE_DURATION = 4 days;
uint256 public startTime;
uint256 public endTime;
// Amount of tokens sold until now in the sale.
uint256 public tokensSold = 0;
// Amount of tokens sold until now in the presale.
uint256 public presaleTokensSold = 0;
// Accumulated amount each participant has contributed so far in the sale (in WEI).
mapping (address => uint256) public participationHistory;
// Accumulated amount each participant have contributed so far in the presale.
mapping (address => uint256) public participationPresaleHistory;
// Maximum amount that each particular is allowed to contribute (in ETH-WEI).
// Defaults to zero. Serving as a functional whitelist.
mapping (address => uint256) public participationCaps;
// Maximum amount ANYONE is currently allowed to contribute. Set to max uint256 so no limitation other than personal participationCaps.
uint256 public hardParticipationCap = uint256(-1);
// initialization of the contract, splitted from the constructor to avoid gas block limit.
bool public initialized = false;
// Vesting plan structure for presale
struct VestingPlan {
uint256 startOffset;
uint256 cliffOffset;
uint256 endOffset;
uint256 installmentLength;
uint8 alapPercent;
}
// Vesting plans for presale
VestingPlan[] public vestingPlans;
// Each token that is sent from the ColuLocalNetworkSale is considered as issued.
event TokensIssued(address indexed to, uint256 tokens);
/// @dev Reverts if called not before the sale.
modifier onlyBeforeSale() {
if (now >= startTime) {
revert();
}
_;
}
/// @dev Reverts if called not during the sale.
modifier onlyDuringSale() {
if (tokensSold >= MAX_TOKENS_SOLD || now < startTime || now >= endTime) {
revert();
}
_;
}
/// @dev Reverts if called before the sale ends.
modifier onlyAfterSale() {
if (!(tokensSold >= MAX_TOKENS_SOLD || now >= endTime)) {
revert();
}
_;
}
/// @dev Reverts if called before the sale is initialized.
modifier notInitialized() {
if (initialized) {
revert();
}
_;
}
/// @dev Reverts if called after the sale is initialized.
modifier isInitialized() {
if (!initialized) {
revert();
}
_;
}
/// @dev Constructor sets the sale addresses and start time.
/// @param _owner address The address of this contract owner.
/// @param _fundingRecipient address The address of the funding recipient.
/// @param _communityPoolAddress address The address of the community pool.
/// @param _futureDevelopmentPoolAddress address The address of the future development pool.
/// @param _stakeholdersPoolAddress address The address of the team pool.
/// @param _startTime uint256 The start time of the token sale.
function ColuLocalNetworkSale(address _owner,
address _fundingRecipient,
address _communityPoolAddress,
address _futureDevelopmentPoolAddress,
address _stakeholdersPoolAddress,
uint256 _startTime) public {
require(_owner != address(0));
require(_fundingRecipient != address(0));
require(_communityPoolAddress != address(0));
require(_futureDevelopmentPoolAddress != address(0));
require(_stakeholdersPoolAddress != address(0));
require(_startTime > now);
owner = _owner;
fundingRecipient = _fundingRecipient;
communityPoolAddress = _communityPoolAddress;
futureDevelopmentPoolAddress = _futureDevelopmentPoolAddress;
stakeholdersPoolAddress = _stakeholdersPoolAddress;
startTime = _startTime;
endTime = startTime + SALE_DURATION;
}
/// @dev Initialize the sale conditions.
function initialize() public onlyOwner notInitialized {
initialized = true;
uint256 months = 1 years / 12;
vestingPlans.push(VestingPlan(0, 0, 1, 1, 0));
vestingPlans.push(VestingPlan(0, 0, 6 * months, 1 * months, 4));
vestingPlans.push(VestingPlan(0, 0, 1 years, 1 * months, 12));
vestingPlans.push(VestingPlan(0, 0, 2 years, 1 * months, 26));
vestingPlans.push(VestingPlan(0, 0, 3 years, 1 * months, 35));
// Deploy new ColuLocalNetwork contract.
cln = new ColuLocalNetwork(MAX_TOKENS);
// Deploy new VestingTrustee contract.
trustee = new VestingTrustee(cln);
// allocate pool tokens:
// Issue the remaining tokens to designated pools.
require(transferTokens(communityPoolAddress, COMMUNITY_POOL));
// stakeholdersPoolAddress will create its own vesting trusts.
require(transferTokens(stakeholdersPoolAddress, STAKEHOLDERS_POOL));
}
/// @dev Allocate tokens to presale participant according to its vesting plan and invesment value.
/// @param _recipient address The presale participant address to recieve the tokens.
/// @param _etherValue uint256 The invesment value (in ETH).
/// @param _vestingPlanIndex uint8 The vesting plan index.
function presaleAllocation(address _recipient, uint256 _etherValue, uint8 _vestingPlanIndex) external onlyOwner onlyBeforeSale isInitialized {
require(_recipient != address(0));
require(_vestingPlanIndex < vestingPlans.length);
// Calculate plan and token amount.
VestingPlan memory plan = vestingPlans[_vestingPlanIndex];
uint256 tokensAndALAPPerEth = CLN_PER_ETH.mul(SafeMath.add(100, plan.alapPercent)).div(100);
uint256 tokensLeftInPreSale = MAX_PRESALE_TOKENS_SOLD.sub(presaleTokensSold);
uint256 weiLeftInSale = tokensLeftInPreSale.div(tokensAndALAPPerEth);
uint256 weiToParticipate = SafeMath.min256(_etherValue, weiLeftInSale);
require(weiToParticipate > 0);
participationPresaleHistory[msg.sender] = participationPresaleHistory[msg.sender].add(weiToParticipate);
uint256 tokensToTransfer = weiToParticipate.mul(tokensAndALAPPerEth);
presaleTokensSold = presaleTokensSold.add(tokensToTransfer);
tokensSold = tokensSold.add(tokensToTransfer);
// Transfer tokens to trustee and create grant.
grant(_recipient, tokensToTransfer, startTime.add(plan.startOffset), startTime.add(plan.cliffOffset),
startTime.add(plan.endOffset), plan.installmentLength, false);
}
/// @dev Add a list of participants to a capped participation tier.
/// @param _participants address[] The list of participant addresses.
/// @param _cap uint256 The cap amount (in ETH-WEI).
function setParticipationCap(address[] _participants, uint256 _cap) external onlyOwner isInitialized {
for (uint i = 0; i < _participants.length; i++) {
participationCaps[_participants[i]] = _cap;
}
}
/// @dev Set hard participation cap for all participants.
/// @param _cap uint256 The hard cap amount.
function setHardParticipationCap(uint256 _cap) external onlyOwner isInitialized {
require(_cap > 0);
hardParticipationCap = _cap;
}
/// @dev Fallback function that will delegate the request to participate().
function () external payable onlyDuringSale isInitialized {
participate(msg.sender);
}
/// @dev Create and sell tokens to the caller.
/// @param _recipient address The address of the recipient receiving the tokens.
function participate(address _recipient) public payable onlyDuringSale isInitialized {
require(_recipient != address(0));
// Enforce participation cap (in WEI received).
uint256 weiAlreadyParticipated = participationHistory[_recipient];
uint256 participationCap = SafeMath.min256(participationCaps[_recipient], hardParticipationCap);
uint256 cappedWeiReceived = SafeMath.min256(msg.value, participationCap.sub(weiAlreadyParticipated));
require(cappedWeiReceived > 0);
// Accept funds and transfer to funding recipient.
uint256 tokensLeftInSale = MAX_TOKENS_SOLD.sub(tokensSold);
uint256 weiLeftInSale = tokensLeftInSale.div(CLN_PER_ETH);
uint256 weiToParticipate = SafeMath.min256(cappedWeiReceived, weiLeftInSale);
participationHistory[_recipient] = weiAlreadyParticipated.add(weiToParticipate);
fundingRecipient.transfer(weiToParticipate);
// Transfer tokens to recipient.
uint256 tokensToTransfer = weiToParticipate.mul(CLN_PER_ETH);
if (tokensLeftInSale.sub(tokensToTransfer) < CLN_PER_ETH) {
// If purchase would cause less than CLN_PER_ETH tokens to be left then nobody could ever buy them.
// So, gift them to the last buyer.
tokensToTransfer = tokensLeftInSale;
}
tokensSold = tokensSold.add(tokensToTransfer);
require(transferTokens(_recipient, tokensToTransfer));
// Partial refund if full participation not possible
// e.g. due to cap being reached.
uint256 refund = msg.value.sub(weiToParticipate);
if (refund > 0) {
msg.sender.transfer(refund);
}
}
/// @dev Finalizes the token sale event: make future development pool grant (lockup) and make token transfarable.
function finalize() external onlyAfterSale onlyOwner isInitialized {
if (cln.isTransferable()) {
revert();
}
// Add unsold token to the future development pool grant (lockup).
uint256 tokensLeftInSale = MAX_TOKENS_SOLD.sub(tokensSold);
uint256 futureDevelopmentPool = FUTURE_DEVELOPMENT_POOL.add(tokensLeftInSale);
// Future Development Pool is locked for 3 years.
grant(futureDevelopmentPoolAddress, futureDevelopmentPool, startTime, startTime.add(3 years),
startTime.add(3 years), 1 days, false);
// Make tokens Transferable, end the sale!.
cln.makeTokensTransferable();
}
function grant(address _grantee, uint256 _amount, uint256 _start, uint256 _cliff, uint256 _end,
uint256 _installmentLength, bool _revokable) private {
// bytes4 grantSig = bytes4(keccak256("grant(address,uint256,uint256,uint256,uint256,bool)"));
bytes4 grantSig = 0x5ee7e96d;
// 6 arguments of size 32
uint256 argsSize = 6 * 32;
// sig + arguments size
uint256 dataSize = 4 + argsSize;
bytes memory m_data = new bytes(dataSize);
assembly {
// Add the signature first to memory
mstore(add(m_data, 0x20), grantSig)
// Add the parameters
mstore(add(m_data, 0x24), _grantee)
mstore(add(m_data, 0x44), _start)
mstore(add(m_data, 0x64), _cliff)
mstore(add(m_data, 0x84), _end)
mstore(add(m_data, 0xa4), _installmentLength)
mstore(add(m_data, 0xc4), _revokable)
}
require(transferTokens(trustee, _amount, m_data));
}
/// @dev Transfer tokens from the sale contract to a recipient.
/// @param _recipient address The address of the recipient.
/// @param _tokens uint256 The amount of tokens to transfer.
function transferTokens(address _recipient, uint256 _tokens) private returns (bool ans) {
ans = cln.transfer(_recipient, _tokens);
if (ans) {
TokensIssued(_recipient, _tokens);
}
}
/// @dev Transfer tokens from the sale contract to a recipient.
/// @param _recipient address The address of the recipient.
/// @param _tokens uint256 The amount of tokens to transfer.
/// @param _data bytes data to send to receiver if it is a contract.
function transferTokens(address _recipient, uint256 _tokens, bytes _data) private returns (bool ans) {
// Request Colu Local Network contract to transfer the requested tokens for the buyer.
ans = cln.transferAndCall(_recipient, _tokens, _data);
if (ans) {
TokensIssued(_recipient, _tokens);
}
}
/// @dev Requests to transfer control of the Colu Local Network contract to a new owner.
/// @param _newOwnerCandidate address The address to transfer ownership to.
///
/// NOTE:
/// 1. The new owner will need to call Colu Local Network contract's acceptOwnership directly in order to accept the ownership.
/// 2. Calling this method during the token sale will prevent the token sale to continue, since only the owner of
/// the Colu Local Network contract can transfer tokens during the sale.
function requestColuLocalNetworkOwnershipTransfer(address _newOwnerCandidate) external onlyOwner {
cln.requestOwnershipTransfer(_newOwnerCandidate);
}
/// @dev Accepts new ownership on behalf of the Colu Local Network contract.
// This can be used by the sale contract itself to claim back ownership of the Colu Local Network contract.
function acceptColuLocalNetworkOwnership() external onlyOwner {
cln.acceptOwnership();
}
/// @dev Requests to transfer control of the VestingTrustee contract to a new owner.
/// @param _newOwnerCandidate address The address to transfer ownership to.
///
/// NOTE:
/// 1. The new owner will need to call trustee contract's acceptOwnership directly in order to accept the ownership.
/// 2. Calling this method during the token sale will prevent the token sale from alocation presale grunts add finalize, since only the owner of
/// the trustee contract can create grunts needed in the presaleAlocation add finalize methods.
function requestVestingTrusteeOwnershipTransfer(address _newOwnerCandidate) external onlyOwner {
trustee.requestOwnershipTransfer(_newOwnerCandidate);
}
/// @dev Accepts new ownership on behalf of the VestingTrustee contract.
/// This can be used by the token sale contract itself to claim back ownership of the VestingTrustee contract.
function acceptVestingTrusteeOwnership() external onlyOwner {
trustee.acceptOwnership();
}
}
|
@dev Constructor that initializes the address of the Colu Local Network contract. @param _cln ColuLocalNetwork The address of the previously deployed Colu Local Network contract.
|
function VestingTrustee(ColuLocalNetwork _cln) public {
require(_cln != address(0));
cln = _cln;
}
| 1,083,107 |
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// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.7.6;
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { CTokenInterface, CErc20Interface, CEtherInterface } from "./interfaces/CTokenInterfaces.sol";
import { IFuseMigrator } from "./interfaces/IFuseMigrator.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
/// @author Ganesh Gautham Elango
/// @title Migrates 1 cToken to another if both have the same underlying token
contract FuseMigrator is IFuseMigrator, Ownable {
using SafeERC20 for IERC20;
/// @dev Fallback for reciving Ether
receive() external payable {}
/// @notice Migrates a cToken of the same underlying asset to another
/// @dev This may put the sender at liquidation risk if they have debt
/// @param recipient Address receiving the new cTokens
/// @param cToken0 cToken to migrate from
/// @param cToken1 cToken to migrate to
/// @param token Underlying token
/// @param cToken0Amount Amount of cToken0 to migrate
/// @return Amount of cToken1 minted and received
function migrate(
address recipient,
address cToken0,
address cToken1,
address token,
uint256 cToken0Amount
) external override returns (uint256) {
// Transfers cToken0Amount of cToken0 from msg.sender to this contract
require(
CTokenInterface(cToken0).transferFrom(msg.sender, address(this), cToken0Amount),
"FuseMigrator: TransferFrom failed"
);
// Redeems cToken0Amount of cToken0 to this contract
require(CErc20Interface(cToken0).redeem(cToken0Amount) == 0, "FuseMigrator: Redeem failed");
// If token is Ether
if (token == address(0)) {
// Mint Ether balance worth of cToken1
CEtherInterface(cToken1).mint{ value: address(this).balance }();
// If token is not Ether
} else {
// Get received token balance
uint256 tokenAmount = IERC20(token).balanceOf(address(this));
// Approve tokenAmount of token to be spent by cToken1
IERC20(token).safeApprove(cToken1, tokenAmount);
// Mint tokenAmount token worth of cToken1 to this contract
require(CErc20Interface(cToken1).mint(tokenAmount) == 0, "FuseMigrator: Mint failed");
}
// Amount of cToken1 minted
uint256 cToken1Balance = CTokenInterface(cToken1).balanceOf(address(this));
// Transfer cToken1Balance of cToken1 to recipient
require(CTokenInterface(cToken1).transfer(recipient, cToken1Balance), "FuseMigrator: Transfer failed");
// Emit event
emit Migrate(msg.sender, recipient, cToken0, cToken1, cToken0Amount);
// Return migrated cToken1 amount
return cToken1Balance;
}
/// @notice Transfer a tokens balance left on this contract to the owner
/// @dev Can only be called by owner
/// @param token Address of token to transfer the balance of
function transferToken(address token) external override onlyOwner {
if (token == address(0)) {
msg.sender.transfer(address(this).balance);
} else {
IERC20(token).safeTransfer(msg.sender, IERC20(token).balanceOf(address(this)));
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: BSD-3-Clause
pragma solidity >=0.5.16;
import { ComptrollerInterface } from "./ComptrollerInterface.sol";
import { InterestRateModel } from "./InterestRateModel.sol";
import { EIP20NonStandardInterface } from "./EIP20NonStandardInterface.sol";
interface CTokenInterface {
/**
* @notice Indicator that this is a CToken contract (for inspection)
*/
function isCToken() external returns (bool);
/*** Market Events ***/
/**
* @notice Event emitted when interest is accrued
*/
event AccrueInterest(uint256 cashPrior, uint256 interestAccumulated, uint256 borrowIndex, uint256 totalBorrows);
/**
* @notice Event emitted when tokens are minted
*/
event Mint(address minter, uint256 mintAmount, uint256 mintTokens);
/**
* @notice Event emitted when tokens are redeemed
*/
event Redeem(address redeemer, uint256 redeemAmount, uint256 redeemTokens);
/**
* @notice Event emitted when underlying is borrowed
*/
event Borrow(address borrower, uint256 borrowAmount, uint256 accountBorrows, uint256 totalBorrows);
/**
* @notice Event emitted when a borrow is repaid
*/
event RepayBorrow(
address payer,
address borrower,
uint256 repayAmount,
uint256 accountBorrows,
uint256 totalBorrows
);
/**
* @notice Event emitted when a borrow is liquidated
*/
event LiquidateBorrow(
address liquidator,
address borrower,
uint256 repayAmount,
address cTokenCollateral,
uint256 seizeTokens
);
/**
* @notice EIP20 Transfer event
*/
event Transfer(address indexed from, address indexed to, uint256 amount);
/**
* @notice EIP20 Approval event
*/
event Approval(address indexed owner, address indexed spender, uint256 amount);
/**
* @notice Failure event
*/
event Failure(uint256 error, uint256 info, uint256 detail);
/*** User Interface ***/
function transfer(address dst, uint256 amount) external returns (bool);
function transferFrom(
address src,
address dst,
uint256 amount
) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function balanceOfUnderlying(address owner) external returns (uint256);
function getAccountSnapshot(address account)
external
view
returns (
uint256,
uint256,
uint256,
uint256
);
function borrowRatePerBlock() external view returns (uint256);
function supplyRatePerBlock() external view returns (uint256);
function totalBorrowsCurrent() external returns (uint256);
function borrowBalanceCurrent(address account) external returns (uint256);
function borrowBalanceStored(address account) external view returns (uint256);
function exchangeRateCurrent() external returns (uint256);
function exchangeRateStored() external view returns (uint256);
function getCash() external view returns (uint256);
function accrueInterest() external returns (uint256);
function seize(
address liquidator,
address borrower,
uint256 seizeTokens
) external returns (uint256);
}
interface CErc20Interface {
/**
* @notice Underlying asset for this CToken
*/
function underlying() external returns (address);
/*** User Interface ***/
function mint(uint256 mintAmount) external returns (uint256);
function redeem(uint256 redeemTokens) external returns (uint256);
function redeemUnderlying(uint256 redeemAmount) external returns (uint256);
function borrow(uint256 borrowAmount) external returns (uint256);
function repayBorrow(uint256 repayAmount) external returns (uint256);
function repayBorrowBehalf(address borrower, uint256 repayAmount) external returns (uint256);
function liquidateBorrow(
address borrower,
uint256 repayAmount,
CTokenInterface cTokenCollateral
) external returns (uint256);
function sweepToken(EIP20NonStandardInterface token) external;
}
interface CEtherInterface {
/*** User Interface ***/
function mint() external payable;
function redeem(uint256 redeemTokens) external returns (uint256);
function redeemUnderlying(uint256 redeemAmount) external returns (uint256);
function borrow(uint256 borrowAmount) external returns (uint256);
function repayBorrow() external payable;
function repayBorrowBehalf(address borrower) external payable;
function liquidateBorrow(address borrower, CTokenInterface cTokenCollateral) external payable;
function sweepToken(EIP20NonStandardInterface token) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.7.6;
interface IFuseMigrator {
/// @notice Emitted on each migration
/// @param sender msg.sender
/// @param recipient Address receiving the new cTokens
/// @param cToken0 cToken to migrate from
/// @param cToken1 cToken to migrate to
/// @param cToken0Amount Amount of cToken0 to migrate
event Migrate(address sender, address recipient, address cToken0, address cToken1, uint256 cToken0Amount);
/// @notice Migrates a cToken of the same underlying asset to another
/// @dev This may put the sender at liquidation risk if they have debt
/// @param recipient Address receiving the new cTokens
/// @param cToken0 cToken to migrate from
/// @param cToken1 cToken to migrate to
/// @param token Underlying token
/// @param cToken0Amount Amount of cToken0 to migrate
/// @return Amount of cToken1 minted and received
function migrate(
address recipient,
address cToken0,
address cToken1,
address token,
uint256 cToken0Amount
) external returns (uint256);
/// @notice Transfer a tokens balance left on this contract to the owner
/// @dev Can only be called by owner
/// @param token Address of token to transfer the balance of
function transferToken(address token) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: BSD-3-Clause
pragma solidity >=0.5.16;
interface ComptrollerInterface {
/// @notice Indicator that this is a Comptroller contract (for inspection)
function isComptroller() external returns (bool);
/*** Assets You Are In ***/
function enterMarkets(address[] calldata cTokens) external returns (uint256[] memory);
function exitMarket(address cToken) external returns (uint256);
/*** Policy Hooks ***/
function mintAllowed(
address cToken,
address minter,
uint256 mintAmount
) external returns (uint256);
function mintVerify(
address cToken,
address minter,
uint256 mintAmount,
uint256 mintTokens
) external;
function redeemAllowed(
address cToken,
address redeemer,
uint256 redeemTokens
) external returns (uint256);
function redeemVerify(
address cToken,
address redeemer,
uint256 redeemAmount,
uint256 redeemTokens
) external;
function borrowAllowed(
address cToken,
address borrower,
uint256 borrowAmount
) external returns (uint256);
function borrowVerify(
address cToken,
address borrower,
uint256 borrowAmount
) external;
function repayBorrowAllowed(
address cToken,
address payer,
address borrower,
uint256 repayAmount
) external returns (uint256);
function repayBorrowVerify(
address cToken,
address payer,
address borrower,
uint256 repayAmount,
uint256 borrowerIndex
) external;
function liquidateBorrowAllowed(
address cTokenBorrowed,
address cTokenCollateral,
address liquidator,
address borrower,
uint256 repayAmount
) external returns (uint256);
function liquidateBorrowVerify(
address cTokenBorrowed,
address cTokenCollateral,
address liquidator,
address borrower,
uint256 repayAmount,
uint256 seizeTokens
) external;
function seizeAllowed(
address cTokenCollateral,
address cTokenBorrowed,
address liquidator,
address borrower,
uint256 seizeTokens
) external returns (uint256);
function seizeVerify(
address cTokenCollateral,
address cTokenBorrowed,
address liquidator,
address borrower,
uint256 seizeTokens
) external;
function transferAllowed(
address cToken,
address src,
address dst,
uint256 transferTokens
) external returns (uint256);
function transferVerify(
address cToken,
address src,
address dst,
uint256 transferTokens
) external;
/*** Liquidity/Liquidation Calculations ***/
function liquidateCalculateSeizeTokens(
address cTokenBorrowed,
address cTokenCollateral,
uint256 repayAmount
) external view returns (uint256, uint256);
}
// SPDX-License-Identifier: BSD-3-Clause
pragma solidity >=0.5.16;
/**
* @title Compound's InterestRateModel Interface
* @author Compound
*/
interface InterestRateModel {
/// @notice Indicator that this is an InterestRateModel contract (for inspection)
function isInterestRateModel() external returns (bool);
/**
* @notice Calculates the current borrow interest rate per block
* @param cash The total amount of cash the market has
* @param borrows The total amount of borrows the market has outstanding
* @param reserves The total amount of reserves the market has
* @return The borrow rate per block (as a percentage, and scaled by 1e18)
*/
function getBorrowRate(
uint256 cash,
uint256 borrows,
uint256 reserves
) external view returns (uint256);
/**
* @notice Calculates the current supply interest rate per block
* @param cash The total amount of cash the market has
* @param borrows The total amount of borrows the market has outstanding
* @param reserves The total amount of reserves the market has
* @param reserveFactorMantissa The current reserve factor the market has
* @return The supply rate per block (as a percentage, and scaled by 1e18)
*/
function getSupplyRate(
uint256 cash,
uint256 borrows,
uint256 reserves,
uint256 reserveFactorMantissa
) external view returns (uint256);
}
// SPDX-License-Identifier: BSD-3-Clause
pragma solidity >=0.5.16;
/**
* @title EIP20NonStandardInterface
* @dev Version of ERC20 with no return values for `transfer` and `transferFrom`
* See https://medium.com/coinmonks/missing-return-value-bug-at-least-130-tokens-affected-d67bf08521ca
*/
interface EIP20NonStandardInterface {
/**
* @notice Get the total number of tokens in circulation
* @return The supply of tokens
*/
function totalSupply() external view returns (uint256);
/**
* @notice Gets the balance of the specified address
* @param owner The address from which the balance will be retrieved
* @return balance The balance
*/
function balanceOf(address owner) external view returns (uint256 balance);
///
/// !!!!!!!!!!!!!!
/// !!! NOTICE !!! `transfer` does not return a value, in violation of the ERC-20 specification
/// !!!!!!!!!!!!!!
///
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
*/
function transfer(address dst, uint256 amount) external;
///
/// !!!!!!!!!!!!!!
/// !!! NOTICE !!! `transferFrom` does not return a value, in violation of the ERC-20 specification
/// !!!!!!!!!!!!!!
///
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
*/
function transferFrom(
address src,
address dst,
uint256 amount
) external;
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved
* @return success Whether or not the approval succeeded
*/
function approve(address spender, uint256 amount) external returns (bool success);
/**
* @notice Get the current allowance from `owner` for `spender`
* @param owner The address of the account which owns the tokens to be spent
* @param spender The address of the account which may transfer tokens
* @return remaining The number of tokens allowed to be spent
*/
function allowance(address owner, address spender) external view returns (uint256 remaining);
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 amount);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
|
Transfer cToken1Balance of cToken1 to recipient
|
require(CTokenInterface(cToken1).transfer(recipient, cToken1Balance), "FuseMigrator: Transfer failed");
| 14,356,546 |
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./full_match/43114/0x0dd2d581994132C919827A2d5401ed6FFDAEFFc9/sources/contracts/SUS.sol
|
* @dev Moves some of the `amount` from `sender` to `recipient` and reroutes the rest. Emits a {Transfer} event./Subtract from sender balanceGet feesuint256 burnAmount = amount.mul(1).div(10**2);Get actual transfer amountFinish transferStore taxBurn _burnPerTx
|
function _transferAndTax(address sender, address recipient, uint256 amount) internal virtual {
uint256 senderBalance = _balances[sender];
_balances[sender] = senderBalance - amount;
uint256 taxAmount = amount.mul(9).div(10**2);
uint256 actualAmount = amount - taxAmount - amount.mul(1).div(10**2);
_balances[recipient] += actualAmount;
emit Transfer(sender, recipient, actualAmount);
_balances[address(this)] += taxAmount;
_accumulatedFees += taxAmount;
_burn(address(this), amount.mul(1).div(10**2));
}
require(amountToAdd <= balanceOf(address(this)), "Insufficient contract token balance");
uint256 tokenAmountToTrade = amountToAdd/2;
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WAVAX();
tokenAmountToTrade,
0,
path,
address(this),
block.timestamp
);
uint256 tokenTT = tokenAmountToTrade.mul(9).div(10**2);
_teamTokenBalance += tokenTT;
uint256 tokenForLiq = tokenAmountToTrade - tokenTT;
address(this),
tokenForLiq,
address(this),
block.timestamp
);
| 4,573,090 |
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./full_match/5/0x1eF1F851689b6494f4eE6563c1979B5b018be51d/sources/data/source/raiden/TokenNetwork.sol
|
@notice Close the channel defined by the two participant addresses. Anybody can call this function on behalf of a participant (called the closing participant), providing a balance proof signed by both parties. Callable only once @param channel_identifier Identifier for the channel on which this operation takes place @param closing_participant Channel participant who closes the channel @param non_closing_participant Channel partner of the `closing_participant`, who provided the balance proof @param balance_hash Hash of (transferred_amount, locked_amount, locksroot) @param additional_hash Computed from the message. Used for message authentication @param nonce Strictly monotonic value used to order transfers @param non_closing_signature Non-closing participant's signature of the balance proof data @param closing_signature Closing participant's signature of the balance proof data The next four arguments form a balance proof. This is the block number at which the channel can be settled. The closing participant must have signed the balance proof. Nonce 0 means that the closer never received a transfer, therefore never received a balance proof, or he is intentionally not providing the latest transfer, in which case the closing party is going to lose the tokens that were transferred to him. Signature must be from the channel partner
|
function closeChannel(
uint256 channel_identifier,
address non_closing_participant,
address closing_participant,
bytes32 balance_hash,
uint256 nonce,
bytes32 additional_hash,
bytes memory non_closing_signature,
bytes memory closing_signature
)
public
isOpen(channel_identifier)
{
require(channel_identifier == getChannelIdentifier(closing_participant, non_closing_participant));
address recovered_non_closing_participant_address;
Channel storage channel = channels[channel_identifier];
channel.state = ChannelState.Closed;
channel.participants[closing_participant].is_the_closer = true;
channel.settle_block_number += uint256(block.number);
address recovered_closing_participant_address = recoverAddressFromBalanceProofCounterSignature(
MessageTypeId.BalanceProof,
channel_identifier,
balance_hash,
nonce,
additional_hash,
non_closing_signature,
closing_signature
);
require(closing_participant == recovered_closing_participant_address);
if (nonce > 0) {
recovered_non_closing_participant_address = recoverAddressFromBalanceProof(
channel_identifier,
balance_hash,
nonce,
additional_hash,
non_closing_signature
);
require(non_closing_participant == recovered_non_closing_participant_address);
updateBalanceProofData(
channel,
recovered_non_closing_participant_address,
nonce,
balance_hash
);
}
emit ChannelClosed(channel_identifier, closing_participant, nonce, balance_hash);
}
| 1,868,261 |
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./full_match/137/0x57874914d81361805C7B6Fe1BCe8b02067A55673/sources/contracts/FireBirdZap.sol
|
1%, set 10000 to disable
|
uint public maxResidual = 100;
| 4,732,782 |
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// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/utils/EnumerableSet.sol";
import "./token/BambooToken.sol";
import "./BambooField.sol";
interface IMigratorKeeper {
// Perform LP token migration from legacy UniswapV2 to BambooDeFi.
// Take the current LP token address and return the new LP token address.
// Migrator should have full access to the caller's LP token.
// Return the new LP token address.
//
// XXX Migrator must have allowance access to UniswapV2 LP tokens.
// BambooDeFi must mint EXACTLY the same amount of BambooDeFi LP tokens or
// else something bad will happen. Traditional UniswapV2 does not
// do that so be careful!
function migrate(IERC20 token) external returns (IERC20);
}
// ZooKeeper is the master of pandas. He can make Bamboo and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once BAMBOO is sufficiently
// distributed and the community can show to govern itself.
//
contract ZooKeeper is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
// Total time rewards
uint256 public constant TIME_REWARDS_LENGTH = 12;
// Lock times available in seconds for 1 day, 7 days, 15 days, 30 days, 60 days, 90 days, 180 days, 1 year, 2 years, 3 years, 4 years, 5 years
uint256[TIME_REWARDS_LENGTH] public timeRewards = [1 days, 7 days, 15 days, 30 days, 60 days, 90 days, 180 days, 365 days, 730 days, 1095 days, 1460 days, 1825 days];
// Lock times saved in a map, for quick validation
mapping(uint256 => bool) public validTimeRewards;
// Info of each user.
struct LpUserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
uint256 lastLpDeposit; // Last time user made a deposit
//
// We do some fancy math here. Basically, any point in time, the amount of BAMBOOs
// entitled to a user but is pending to be distributed is:
//
// pending reward = (user.amount * pool.accBambooPerShare) - user.rewardDebt
//
// Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
// 1. The pool's `accBambooPerShare` (and `lastRewardBlock`) gets updated.
// 2. User receives the pending reward sent to his/her address.
// 3. User's `amount` gets updated.
// 4. User's `rewardDebt` gets updated.
}
struct LpRegister {
uint256 id; // Pool Id saved in ZooKeeper
bool registered; // Flag for checking if this address was added
}
struct BambooDeposit {
uint256 amount; // How many BAMBOO tokens the user has deposited.
uint256 lockTime; // Time in seconds that need to pass before this deposit can be withdrawn.
bool active; // Flag for checking if this entry is actively staking.
uint256 totalReward; // The total reward that will be collected from this deposit.
uint256 dailyReward; // The amount of bamboo that could be claimed daily.
uint256 lastTime; // Last timestamp when the daily rewards where collected.
}
struct BambooUserInfo {
mapping(uint256 => BambooDeposit) deposits; // Deposits from the user.
uint256[] ids; // Active deposits from the user.
uint256 totalAmount; // Total amount of active deposits from the userEstamos teniendo una excepción de contrato debido a esto, de ahí mi pregunta. Realmente no hay problema, pero de ser así tendré que modificar alguna parte del contrato..
uint256 lastDeposit; // Timestamp of last deposit from user
}
struct StakeMultiplierInfo {
uint256[TIME_REWARDS_LENGTH] multiplierBonus; // Array of the different multipliers.
bool registered; // If this amount has been registered
}
struct YieldMultiplierInfo {
uint256 multiplier; // Multiplier value.
bool registered; // If this amount has been registered
}
// Info of each pool.
struct PoolInfo {
IERC20 lpToken; // Address of LP token contract.
uint256 allocPoint; // How many allocation points assigned to this pool. BAMBOOs to distribute per block.
uint256 lastRewardBlock; // Last block number that BAMBOOs distribution occurs.
uint256 accBambooPerShare; // Accumulated BAMBOOs per share, times 1e12. See below.
}
// The BAMBOO TOKEN
BambooToken public bamboo;
// BAMBOO tokens created per block.
uint256 public bambooPerBlock;
// The migrator contract. It has a lot of power. Can only be set through governance (owner).
IMigratorKeeper public migrator;
// The bridge address
address public bridge;
// The BambooField contract. If active, validates the lp staking for additional rewards.
BambooField public bambooField;
// If the BambooField is activated. Can be turned off by owner
bool public isField;
// Info of each pool.
PoolInfo[] public poolInfo;
// Pool IDs
mapping(address => LpRegister) public getPool;
// Info of each user that stakes LP tokens.
mapping(uint256 => mapping (address => LpUserInfo)) public userInfo;
// Info of the additional multipliers for BAMBOO staking
mapping(uint256 => StakeMultiplierInfo) public stakeMultipliers;
// Info of the multipliers available for YieldFarming + staking
mapping(uint256 => YieldMultiplierInfo) public yieldMultipliers;
// Amounts registered for yield multipliers
uint256[] public yieldAmounts;
// Info of each user that stakes BAMBOO.
mapping(address => BambooUserInfo) public bambooUserInfo;
// Total allocation points. Must be the sum of all allocation points in all pools.
uint256 public totalAllocPoint = 0;
// The block number when BAMBOO mining starts.
uint256 public startBlock;
// Min time of stake and yield for multiplier rewards
uint256 public minYieldTime = 7 days;
uint256 public minStakeTime = 1 days;
event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
event BAMBOODeposit(address indexed user, uint256 amount, uint256 lockTime, uint256 id);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
event BAMBOOWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
event BAMBOOBonusWithdraw(address indexed user, uint256 indexed pid, uint256 amount, uint256 ndays);
event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
event BridgeTransfer(address indexed user, uint256 indexed amount);
modifier onlyEOA() {
require(msg.sender == tx.origin, "ZooKeeper: must use EOA");
_;
}
constructor(BambooToken _bamboo, uint256 _bambooPerBlock, uint256 _startBlock, address _bridge) {
require(_bambooPerBlock > 0, "invalid bamboo per block");
bamboo = _bamboo;
bambooPerBlock = _bambooPerBlock;
startBlock = _startBlock;
for(uint i=0; i<TIME_REWARDS_LENGTH; i++) {
validTimeRewards[timeRewards[i]] = true;
}
bridge = _bridge;
}
// Add a new lp to the pool. Can only be called by the owner.
function add(uint256 _allocPoint, IERC20 _lpToken) public onlyOwner {
massUpdatePools();
checkPoolDuplicate(_lpToken);
uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
totalAllocPoint = totalAllocPoint.add(_allocPoint);
poolInfo.push(PoolInfo({
lpToken: _lpToken,
allocPoint: _allocPoint,
lastRewardBlock: lastRewardBlock,
accBambooPerShare: 0
}));
getPool[address(_lpToken)] = LpRegister({id: poolInfo.length-1, registered: true});
}
// Update the given pool's BAMBOO allocation point. Can only be called by the owner.
function set(uint256 _pid, uint256 _allocPoint) public onlyOwner {
massUpdatePools();
totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
poolInfo[_pid].allocPoint = _allocPoint;
}
// Set the migrator contract. Can only be called by the owner.
function setMigrator(IMigratorKeeper _migrator) public onlyOwner {
migrator = _migrator;
}
// Migrate lp token to another lp contract. We trust that migrator contract is correct.
function migrate(uint256 _pid) public onlyOwner {
require(address(migrator) != address(0), "migrate: no migrator");
PoolInfo storage pool = poolInfo[_pid];
IERC20 lpToken = pool.lpToken;
uint256 bal = lpToken.balanceOf(address(this));
lpToken.safeApprove(address(migrator), bal);
IERC20 newLpToken = migrator.migrate(lpToken);
require(bal == newLpToken.balanceOf(address(this)), "migrate: bad");
pool.lpToken = newLpToken;
}
// This function is called by the bridge watching the other chain.
function bridgeTransfer(address _user, uint256 _amount) public {
require(address(msg.sender) == bridge, "bridgeTransfer: invalid bridge address");
bamboo.mint(_user, _amount);
emit BridgeTransfer(_user, _amount);
}
// BambooDeFi setup
// Add a new row of bamboo staking rewards. E.G. 500 (bamboos) -> [10001 (x1.0001*10000), ... ].
// Adding an existing amount will repace it. Can only be called by the owner.
function addStakeMultiplier(uint256 _amount, uint256[TIME_REWARDS_LENGTH] memory _multiplierBonuses) public onlyOwner {
require(_amount > 0, "addStakeMultiplier: invalid amount");
// Validate that multipliers are valid
for(uint i=0; i<TIME_REWARDS_LENGTH; i++){
require(_multiplierBonuses[i] >= 10000, "addStakeMultiplier: invalid multiplier array");
}
uint mLength = _multiplierBonuses.length;
require(mLength== TIME_REWARDS_LENGTH, "addStakeMultiplier: invalid array length");
StakeMultiplierInfo memory mInfo = StakeMultiplierInfo({multiplierBonus: _multiplierBonuses, registered:true});
stakeMultipliers[_amount] = mInfo;
}
// Add a new amount for yield farming rewards. E.G. 500 (bamboos) -> 10001 (x1.0001*10000). Adding an existing amount will replace it.
// Can only be called by the owner.
function addYieldMultiplier(uint256 _amount, uint256 _multiplierBonus ) public onlyOwner {
require(_amount > 0, "addYieldMultiplier: invalid amount");
// 10000 is a x1 multiplier.
require(_multiplierBonus >= 10000, "addYieldMultiplier: invalid multiplier");
if(!yieldMultipliers[_amount].registered){
yieldAmounts.push(_amount);
}
YieldMultiplierInfo memory mInfo = YieldMultiplierInfo({multiplier: _multiplierBonus, registered:true});
yieldMultipliers[_amount] = mInfo;
}
// Remove. Will not affect current deposits, since rewards are calculated at deposit time.
function removeStakeMultiplier(uint256 _amount) public onlyOwner {
require(stakeMultipliers[_amount].registered, "removeStakeMultiplier: nothing to remove");
delete(stakeMultipliers[_amount]);
}
// Remove yieldMultiplier.
function removeYieldMultiplier(uint256 _amount) public onlyOwner {
require(yieldMultipliers[_amount].registered, "removeYieldMultiplier: nothing to remove");
// Find index
for(uint i=0; i<yieldAmounts.length; i++) {
if(yieldAmounts[i] == _amount){
// Remove
yieldAmounts[i] = yieldAmounts[yieldAmounts.length -1];
yieldAmounts.pop();
break;
}
}
delete(yieldMultipliers[_amount]);
}
// Return reward multiplier over the given the time spent staking and the amount locked
function getStakingMultiplier(uint256 _time, uint256 _amount) public view returns (uint256) {
uint256 index = getTimeEarned(_time);
StakeMultiplierInfo storage multiInfo = stakeMultipliers[_amount];
require(multiInfo.registered, "getStakingMultiplier: invalid amount");
uint256 res = multiInfo.multiplierBonus[index];
return res;
}
// Returns reward multiplier for yieldFarming + BambooStaking
function getYieldMultiplier(uint256 _amount) public view returns (uint256) {
uint256 key=0;
for(uint i=0; i<yieldAmounts.length; i++) {
if (_amount >= yieldAmounts[i] ) {
key = yieldAmounts[i];
}
}
if(key == 0) {
return 10000;
}
else {
return yieldMultipliers[key].multiplier;
}
}
// Returns the active deposits from a user.
function getDeposits(address _user) public view returns (uint256[] memory) {
return bambooUserInfo[_user].ids;
}
// Returns the deposit amount and the minimum timestamp where the deposit can be withdrawn.
function getDepositInfo(address _user, uint256 _id) public view returns (uint256, uint256) {
BambooDeposit storage _deposit = bambooUserInfo[_user].deposits[_id];
require(_deposit.active, "deposit does not exist");
return (_deposit.amount, _id.add(_deposit.lockTime));
}
// Returns amount of stake rewards available to claim, and the days that are being accounted.
function getClaimableBamboo(uint256 _id, address _addr ) public view returns(uint256, uint256) {
BambooUserInfo storage user = bambooUserInfo[_addr];
// If it's the last withdraw
if(block.timestamp >= _id.add(user.deposits[_id].lockTime) ){
uint pastdays = user.deposits[_id].lastTime.sub(_id).div(1 days);
uint256 leftToClaim = user.deposits[_id].totalReward.sub(pastdays.mul(user.deposits[_id].dailyReward));
return (leftToClaim, (user.deposits[_id].lockTime.div(1 days)).sub(pastdays));
}
else{
uint256 ndays = (block.timestamp.sub(user.deposits[_id].lastTime)).div(1 days);
return (ndays.mul(user.deposits[_id].dailyReward), ndays);
}
}
// View function to see pending BAMBOOs on frontend.
function pendingBamboo(uint256 _pid, address _user) external view returns (uint256) {
PoolInfo storage pool = poolInfo[_pid];
LpUserInfo storage user = userInfo[_pid][_user];
uint256 bambooUserAmount = bambooUserInfo[_user].totalAmount;
uint256 accBambooPerShare = pool.accBambooPerShare;
uint256 lpSupply = pool.lpToken.balanceOf(address(this));
uint256 yMultiplier = 10000;
if (block.timestamp - user.lastLpDeposit > minYieldTime && block.timestamp - bambooUserInfo[_user].lastDeposit > minStakeTime) {
yMultiplier = getYieldMultiplier(bambooUserAmount);
}
if (block.number > pool.lastRewardBlock && lpSupply != 0) {
uint256 multiplier = block.number.sub(pool.lastRewardBlock);
uint256 bambooReward = multiplier.mul(bambooPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
accBambooPerShare = accBambooPerShare.add(bambooReward.mul(1e12).div(lpSupply));
}
uint256 pending = user.amount.mul(accBambooPerShare).div(1e12).sub(user.rewardDebt);
return yMultiplier.mul(pending).div(10000);
}
// View function to see pending BAMBOOS to claim on staking. Returns total amount of pending bamboo to claim in the future,
// and the amount available to claim at the moment.
function pendingStakeBamboo(uint256 _id, address _addr) external view returns (uint256, uint256) {
BambooUserInfo storage user = bambooUserInfo[_addr];
require(user.deposits[_id].active, "pendingStakeBamboo: invalid id");
uint256 claimable;
uint256 ndays;
(claimable, ndays) = getClaimableBamboo(_id, _addr);
if (block.timestamp.sub(user.deposits[_id].lastTime) >= user.deposits[_id].lockTime){
return (claimable, claimable);
}
else{
uint pastdays = user.deposits[_id].lastTime.sub(_id).div(1 days);
uint256 leftToClaim = user.deposits[_id].totalReward.sub(pastdays.mul(user.deposits[_id].dailyReward));
return (leftToClaim, claimable);
}
}
// Update reward variables for all pools. Be careful of gas spending!
function massUpdatePools() public {
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
updatePool(pid);
}
}
// Update reward variables of the given pool to be up-to-date.
function updatePool(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
if (block.number <= pool.lastRewardBlock) {
return;
}
uint256 lpSupply = pool.lpToken.balanceOf(address(this));
if (lpSupply == 0) {
pool.lastRewardBlock = block.number;
return;
}
uint256 multiplier = block.number.sub(pool.lastRewardBlock);
uint256 bambooReward = multiplier.mul(bambooPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
bamboo.mint(address(this), bambooReward);
pool.accBambooPerShare = pool.accBambooPerShare.add(bambooReward.mul(1e12).div(lpSupply));
pool.lastRewardBlock = block.number;
}
// Deposit Functions
// Deposit LP tokens to ZooKeeper for BAMBOO allocation.
function deposit(uint256 _pid, uint256 _amount) public onlyEOA {
require ( _pid < poolInfo.length , "deposit: pool exists?");
PoolInfo storage pool = poolInfo[_pid];
LpUserInfo storage user = userInfo[_pid][msg.sender];
uint256 bambooUserAmount = bambooUserInfo[msg.sender].totalAmount;
updatePool(_pid);
if (user.amount > 0) {
// Allocate how much bamboo corresponds to user
uint256 pending = user.amount.mul(pool.accBambooPerShare).div(1e12).sub(user.rewardDebt);
// If user has pending rewards from previous blocks
if (pending > 0) {
uint256 bonus = mintBonusBamboo(pending, user.lastLpDeposit, bambooUserInfo[msg.sender].lastDeposit, bambooUserAmount);
safeBambooTransfer(msg.sender, pending.add(bonus));
}
}
// Now take care of the new deposit
if(_amount > 0) {
pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
user.amount = user.amount.add(_amount);
user.lastLpDeposit = block.timestamp;
}
user.rewardDebt = user.amount.mul(pool.accBambooPerShare).div(1e12);
emit Deposit(msg.sender, _pid, _amount);
}
// Deposit Bamboo to ZooKeeper for additional staking rewards. Bamboos should be approved
function depositBamboo(uint256 _amount, uint256 _lockTime) public onlyEOA {
require(stakeMultipliers[_amount].registered, "depositBamboo: invalid amount");
require(validTimeRewards[_lockTime] , "depositBamboo: invalid lockTime");
BambooUserInfo storage user = bambooUserInfo[msg.sender];
require(!user.deposits[block.timestamp].active, "depositBamboo: only 1 deposit per block!");
if(_amount > 0) {
IERC20(bamboo).safeTransferFrom(address(msg.sender), address(this), _amount);
// Calculate the final rewards
uint256 multiplier = getStakingMultiplier(_lockTime, _amount);
uint256 pending = (multiplier.mul(_amount).div(10000)).sub(_amount);
uint totaldays = _lockTime / 1 days;
BambooDeposit memory depositData = BambooDeposit({
amount: _amount,
lockTime: _lockTime,
active: true,
totalReward:pending,
dailyReward:pending.div(totaldays),
lastTime: block.timestamp
});
user.ids.push(block.timestamp);
user.deposits[block.timestamp] = depositData;
user.totalAmount = user.totalAmount.add(_amount);
user.lastDeposit = block.timestamp;
}
emit BAMBOODeposit(msg.sender, _amount, _lockTime, block.timestamp);
}
// Withdraw Functions
// Withdraw LP tokens from ZooKeeper.
function withdraw(uint256 _pid, uint256 _amount) public onlyEOA {
PoolInfo storage pool = poolInfo[_pid];
LpUserInfo storage user = userInfo[_pid][msg.sender];
uint256 bambooUserAmount = bambooUserInfo[msg.sender].totalAmount;
require(user.amount >= _amount, "withdraw: not good");
updatePool(_pid);
uint256 pending = user.amount.mul(pool.accBambooPerShare).div(1e12).sub(user.rewardDebt);
if(pending > 0) {
uint256 bonus = mintBonusBamboo(pending, user.lastLpDeposit, bambooUserInfo[msg.sender].lastDeposit, bambooUserAmount);
safeBambooTransfer(msg.sender, pending.add(bonus));
}
if(_amount > 0){
user.amount = user.amount.sub(_amount);
pool.lpToken.safeTransfer(address(msg.sender), _amount);
// Notify the BambooField if active
if(user.amount == 0 && isField){
if(bambooField.isActive(msg.sender, _pid)){
bambooField.updatePool(msg.sender);
}
}
}
user.rewardDebt = user.amount.mul(pool.accBambooPerShare).div(1e12);
emit Withdraw(msg.sender, _pid, _amount);
}
// Withdraw a Bamboo deposit from ZooKeeper.
function withdrawBamboo(uint256 _depositId) public onlyEOA {
BambooUserInfo storage user = bambooUserInfo[msg.sender];
require(user.deposits[_depositId].active, "withdrawBamboo: invalid id");
uint256 depositEnd = _depositId.add(user.deposits[_depositId].lockTime) ;
// Get the depositIndex for deleting it later from the active ids
uint depositIndex = 0;
for (uint i=0; i<user.ids.length; i++){
if (user.ids[i] == _depositId){
depositIndex = i;
break;
}
}
require(user.ids[depositIndex] == _depositId, "withdrawBamboo: invalid id");
// User cannot withdraw before the lockTime
require(block.timestamp >= depositEnd, "withdrawBamboo: cannot withdraw yet!");
uint256 amount = user.deposits[_depositId].amount;
withdrawDailyBamboo(_depositId);
// Clean up the removed deposit
user.ids[depositIndex] = user.ids[user.ids.length -1];
user.ids.pop();
user.totalAmount = user.totalAmount.sub(user.deposits[_depositId].amount);
delete user.deposits[_depositId];
safeBambooTransfer(msg.sender, amount);
emit BAMBOOWithdraw(msg.sender, _depositId, amount);
}
// Withdraw the bonus staking Bamboo available from this deposit.
function withdrawDailyBamboo(uint256 _depositId) public onlyEOA {
BambooUserInfo storage user = bambooUserInfo[msg.sender];
require(user.deposits[_depositId].active, "withdrawDailyBamboo: invalid id");
uint256 depositEnd = _depositId.add(user.deposits[_depositId].lockTime);
uint256 amount;
uint256 ndays;
(amount, ndays) = getClaimableBamboo(_depositId, msg.sender);
uint256 newLastTime = user.deposits[_depositId].lastTime.add(ndays.mul(1 days));
assert(newLastTime <= depositEnd);
user.deposits[_depositId].lastTime = newLastTime;
// Mint the bonus bamboo
bamboo.mint(msg.sender, amount);
emit BAMBOOBonusWithdraw(msg.sender, _depositId, amount, ndays);
}
function mintBonusBamboo(uint256 pending, uint256 lastLp, uint256 lastStake, uint256 bambooUserAmount) internal returns (uint256) {
// Check if user is eligible for a multiplier, depending of last time of lp && bamboo deposit
if (block.timestamp - lastLp > minYieldTime && block.timestamp - lastStake > minStakeTime && bambooUserAmount > 0) {
uint256 multiplier = getYieldMultiplier(bambooUserAmount);
// Pending*multiplier
uint256 pmul = multiplier.mul(pending).div(10000);
// Bonus BAMBOO from multiplier
uint256 bonus = pmul.sub(pending);
// Mint the bonus
bamboo.mint(address(this), bonus);
return bonus;
}
return 0;
}
// Withdraw LPs without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
LpUserInfo storage user = userInfo[_pid][msg.sender];
uint256 _amount=user.amount;
user.amount = 0;
user.rewardDebt = 0;
pool.lpToken.safeTransfer(address(msg.sender), _amount);
emit EmergencyWithdraw(msg.sender, _pid, _amount);
}
// Return the index of the time reward that can be claimed.
function getTimeEarned(uint256 _time) internal view returns (uint256) {
require(_time >= timeRewards[0], "getTimeEarned: invalid time");
uint256 index=0;
for(uint i=1; i<TIME_REWARDS_LENGTH; i++) {
if (_time >= timeRewards[i] ) {
index = i;
}
else{
break;
}
}
return index;
}
// Safe bamboo transfer function, just in case if rounding error causes pool to not have enough BAMBOOs.
function safeBambooTransfer(address _to, uint256 _amount) internal {
uint256 bambooBal = bamboo.balanceOf(address(this));
if (_amount > bambooBal) {
IERC20(bamboo).safeTransfer(_to, bambooBal);
} else {
IERC20(bamboo).safeTransfer(_to, _amount);
}
}
function checkPoolDuplicate (IERC20 _lpToken) public view {
uint256 length = poolInfo.length;
for(uint256 pid = 0; pid < length ; ++pid) {
require (poolInfo[pid].lpToken != _lpToken , "add: existing pool?");
}
}
function getPoolLength() public view returns(uint count) {
return poolInfo.length;
}
function getLpAmount(uint _pid, address _user) public view returns(uint256) {
return userInfo[_pid][_user].amount;
}
// Switch BambooField active.
function switchBamboField(BambooField _bf) public onlyOwner {
if(isField){
isField = false;
}
else{
isField = true;
bambooField = _bf;
}
}
// Claim ownership for token
function claimToken() public onlyOwner {
// Bamboo Token should have proposedOwner before this
bamboo.claimOwnership();
}
// Propose ownership of bamboo
function proposeBambooOwner(address _owner) public onlyOwner {
bamboo.proposeOwner(_owner);
}
// Update minYieldTime ans minStakeTime in seconds. If it's too big, would disable yield bonuses.
function minYield(uint256 _yTime, uint256 _sTime) public onlyOwner {
minYieldTime = _yTime;
minStakeTime = _sTime;
}
// Change bamboo per block. Affects rewards for all users.
function changeBambooPerBlock(uint256 _bamboo) public onlyOwner {
require(_bamboo > 0, "changeBambooPerBlock: invalid amount");
bambooPerBlock = _bamboo;
}
// Change bridge address.
function changeBridge(address _bridge) public onlyOwner {
bridge = _bridge;
}
}
|
Time in seconds that need to pass before this deposit can be withdrawn.
|
uint256 lockTime;
| 5,366,317 |
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] |
./partial_match/8453/0xC9449a900dAd9a9860EEd2915b64eAfEE7a2171f/sources/contracts/BannerNFTsWriter.sol
|
check if tokenId is in range to change attributes
|
require(_exists(tokenId), "TOKEN_404");
| 16,712,506 |
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] |
pragma solidity ^0.6.0;
contract initializable5 { //inject NONSTANDARD NAMING
bool private initialized;
bool private initializing;
modifier INITIALIZER65() { //inject NONSTANDARD NAMING
require(initializing || ISCONSTRUCTOR91() || !initialized, "Contract instance has already been initialized");
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
initialized = true;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
function ISCONSTRUCTOR91() private view returns (bool) { //inject NONSTANDARD NAMING
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
address self = address(this);
uint256 cs;
assembly { cs := extcodesize(self) }
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
contract contextupgradesafe87 is initializable5 { //inject NONSTANDARD NAMING
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
function __CONTEXT_INIT10() internal INITIALIZER65 { //inject NONSTANDARD NAMING
__CONTEXT_INIT_UNCHAINED61();
}
function __CONTEXT_INIT_UNCHAINED61() internal INITIALIZER65 { //inject NONSTANDARD NAMING
}
function _MSGSENDER78() internal view virtual returns (address payable) { //inject NONSTANDARD NAMING
return msg.sender;
}
function _MSGDATA22() internal view virtual returns (bytes memory) { //inject NONSTANDARD NAMING
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
contract ownableupgradesafe25 is initializable5, contextupgradesafe87 { //inject NONSTANDARD NAMING
address private _owner;
event OWNERSHIPTRANSFERRED52(address indexed previousOwner, address indexed newOwner); //inject NONSTANDARD NAMING
function __OWNABLE_INIT13() internal INITIALIZER65 { //inject NONSTANDARD NAMING
__CONTEXT_INIT_UNCHAINED61();
__OWNABLE_INIT_UNCHAINED84();
}
function __OWNABLE_INIT_UNCHAINED84() internal INITIALIZER65 { //inject NONSTANDARD NAMING
address msgSender = _MSGSENDER78();
_owner = msgSender;
emit OWNERSHIPTRANSFERRED52(address(0), msgSender);
}
function OWNER9() public view returns (address) { //inject NONSTANDARD NAMING
return _owner;
}
modifier ONLYOWNER81() { //inject NONSTANDARD NAMING
require(_owner == _MSGSENDER78(), "Ownable: caller is not the owner");
_;
}
function RENOUNCEOWNERSHIP19() public virtual ONLYOWNER81 { //inject NONSTANDARD NAMING
emit OWNERSHIPTRANSFERRED52(_owner, address(0));
_owner = address(0);
}
function TRANSFEROWNERSHIP24(address newOwner) public virtual ONLYOWNER81 { //inject NONSTANDARD NAMING
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OWNERSHIPTRANSFERRED52(_owner, newOwner);
_owner = newOwner;
}
uint256[49] private __gap;
}
library safemath14 { //inject NONSTANDARD NAMING
function ADD80(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function SUB60(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
return SUB60(a, b, "SafeMath: subtraction overflow");
}
function SUB60(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { //inject NONSTANDARD NAMING
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function MUL16(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function DIV54(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
return DIV54(a, b, "SafeMath: division by zero");
}
function DIV54(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { //inject NONSTANDARD NAMING
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function MOD56(uint256 a, uint256 b) internal pure returns (uint256) { //inject NONSTANDARD NAMING
return MOD56(a, b, "SafeMath: modulo by zero");
}
function MOD56(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { //inject NONSTANDARD NAMING
require(b != 0, errorMessage);
return a % b;
}
}
interface ierc2086 { //inject NONSTANDARD NAMING
function TOTALSUPPLY25() external view returns (uint256); //inject NONSTANDARD NAMING
function BALANCEOF21(address account) external view returns (uint256); //inject NONSTANDARD NAMING
function TRANSFER6(address recipient, uint256 amount) external returns (bool); //inject NONSTANDARD NAMING
function ALLOWANCE84(address owner, address spender) external view returns (uint256); //inject NONSTANDARD NAMING
function APPROVE33(address spender, uint256 amount) external returns (bool); //inject NONSTANDARD NAMING
function TRANSFERFROM54(address sender, address recipient, uint256 amount) external returns (bool); //inject NONSTANDARD NAMING
event TRANSFER56(address indexed from, address indexed to, uint256 value); //inject NONSTANDARD NAMING
event APPROVAL90(address indexed owner, address indexed spender, uint256 value); //inject NONSTANDARD NAMING
}
library console87 { //inject NONSTANDARD NAMING
address constant console_address36 = address(0x000000000000000000636F6e736F6c652e6c6f67); //inject NONSTANDARD NAMING
function _SENDLOGPAYLOAD51(bytes memory payload) private view { //inject NONSTANDARD NAMING
uint256 payloadLength = payload.length;
address consoleAddress = console_address36;
assembly {
let payloadStart := add(payload, 32)
let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0)
}
}
function LOG40() internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log()"));
}
function LOGINT64(int p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(int)", p0));
}
function LOGUINT96(uint p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint)", p0));
}
function LOGSTRING94(string memory p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string)", p0));
}
function LOGBOOL52(bool p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool)", p0));
}
function LOGADDRESS2(address p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address)", p0));
}
function LOGBYTES0(bytes memory p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes)", p0));
}
function LOGBYTE23(byte p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(byte)", p0));
}
function LOGBYTES1100(bytes1 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes1)", p0));
}
function LOGBYTES273(bytes2 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes2)", p0));
}
function LOGBYTES377(bytes3 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes3)", p0));
}
function LOGBYTES477(bytes4 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes4)", p0));
}
function LOGBYTES578(bytes5 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes5)", p0));
}
function LOGBYTES61(bytes6 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes6)", p0));
}
function LOGBYTES735(bytes7 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes7)", p0));
}
function LOGBYTES818(bytes8 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes8)", p0));
}
function LOGBYTES931(bytes9 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes9)", p0));
}
function LOGBYTES1064(bytes10 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes10)", p0));
}
function LOGBYTES1141(bytes11 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes11)", p0));
}
function LOGBYTES1261(bytes12 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes12)", p0));
}
function LOGBYTES1365(bytes13 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes13)", p0));
}
function LOGBYTES1433(bytes14 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes14)", p0));
}
function LOGBYTES1532(bytes15 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes15)", p0));
}
function LOGBYTES1678(bytes16 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes16)", p0));
}
function LOGBYTES176(bytes17 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes17)", p0));
}
function LOGBYTES1833(bytes18 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes18)", p0));
}
function LOGBYTES1973(bytes19 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes19)", p0));
}
function LOGBYTES202(bytes20 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes20)", p0));
}
function LOGBYTES2137(bytes21 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes21)", p0));
}
function LOGBYTES2248(bytes22 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes22)", p0));
}
function LOGBYTES2317(bytes23 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes23)", p0));
}
function LOGBYTES2438(bytes24 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes24)", p0));
}
function LOGBYTES2548(bytes25 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes25)", p0));
}
function LOGBYTES261(bytes26 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes26)", p0));
}
function LOGBYTES2793(bytes27 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes27)", p0));
}
function LOGBYTES2869(bytes28 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes28)", p0));
}
function LOGBYTES299(bytes29 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes29)", p0));
}
function LOGBYTES3053(bytes30 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes30)", p0));
}
function LOGBYTES3139(bytes31 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes31)", p0));
}
function LOGBYTES3263(bytes32 p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bytes32)", p0));
}
function LOG40(uint p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint)", p0));
}
function LOG40(string memory p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string)", p0));
}
function LOG40(bool p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool)", p0));
}
function LOG40(address p0) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address)", p0));
}
function LOG40(uint p0, uint p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint)", p0, p1));
}
function LOG40(uint p0, string memory p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string)", p0, p1));
}
function LOG40(uint p0, bool p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool)", p0, p1));
}
function LOG40(uint p0, address p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address)", p0, p1));
}
function LOG40(string memory p0, uint p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint)", p0, p1));
}
function LOG40(string memory p0, string memory p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string)", p0, p1));
}
function LOG40(string memory p0, bool p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool)", p0, p1));
}
function LOG40(string memory p0, address p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address)", p0, p1));
}
function LOG40(bool p0, uint p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint)", p0, p1));
}
function LOG40(bool p0, string memory p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string)", p0, p1));
}
function LOG40(bool p0, bool p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool)", p0, p1));
}
function LOG40(bool p0, address p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address)", p0, p1));
}
function LOG40(address p0, uint p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint)", p0, p1));
}
function LOG40(address p0, string memory p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string)", p0, p1));
}
function LOG40(address p0, bool p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool)", p0, p1));
}
function LOG40(address p0, address p1) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address)", p0, p1));
}
function LOG40(uint p0, uint p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2));
}
function LOG40(uint p0, uint p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2));
}
function LOG40(uint p0, uint p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2));
}
function LOG40(uint p0, uint p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2));
}
function LOG40(uint p0, string memory p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2));
}
function LOG40(uint p0, string memory p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2));
}
function LOG40(uint p0, string memory p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2));
}
function LOG40(uint p0, string memory p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2));
}
function LOG40(uint p0, bool p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2));
}
function LOG40(uint p0, bool p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2));
}
function LOG40(uint p0, bool p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2));
}
function LOG40(uint p0, bool p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2));
}
function LOG40(uint p0, address p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2));
}
function LOG40(uint p0, address p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2));
}
function LOG40(uint p0, address p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2));
}
function LOG40(uint p0, address p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2));
}
function LOG40(string memory p0, uint p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2));
}
function LOG40(string memory p0, uint p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2));
}
function LOG40(string memory p0, uint p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2));
}
function LOG40(string memory p0, uint p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2));
}
function LOG40(string memory p0, string memory p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2));
}
function LOG40(string memory p0, string memory p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2));
}
function LOG40(string memory p0, string memory p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2));
}
function LOG40(string memory p0, string memory p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2));
}
function LOG40(string memory p0, bool p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2));
}
function LOG40(string memory p0, bool p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2));
}
function LOG40(string memory p0, bool p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2));
}
function LOG40(string memory p0, bool p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2));
}
function LOG40(string memory p0, address p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2));
}
function LOG40(string memory p0, address p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2));
}
function LOG40(string memory p0, address p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2));
}
function LOG40(string memory p0, address p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2));
}
function LOG40(bool p0, uint p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2));
}
function LOG40(bool p0, uint p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2));
}
function LOG40(bool p0, uint p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2));
}
function LOG40(bool p0, uint p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2));
}
function LOG40(bool p0, string memory p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2));
}
function LOG40(bool p0, string memory p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2));
}
function LOG40(bool p0, string memory p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2));
}
function LOG40(bool p0, string memory p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2));
}
function LOG40(bool p0, bool p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2));
}
function LOG40(bool p0, bool p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2));
}
function LOG40(bool p0, bool p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2));
}
function LOG40(bool p0, bool p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2));
}
function LOG40(bool p0, address p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2));
}
function LOG40(bool p0, address p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2));
}
function LOG40(bool p0, address p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2));
}
function LOG40(bool p0, address p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2));
}
function LOG40(address p0, uint p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2));
}
function LOG40(address p0, uint p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2));
}
function LOG40(address p0, uint p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2));
}
function LOG40(address p0, uint p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2));
}
function LOG40(address p0, string memory p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2));
}
function LOG40(address p0, string memory p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2));
}
function LOG40(address p0, string memory p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2));
}
function LOG40(address p0, string memory p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2));
}
function LOG40(address p0, bool p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2));
}
function LOG40(address p0, bool p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2));
}
function LOG40(address p0, bool p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2));
}
function LOG40(address p0, bool p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2));
}
function LOG40(address p0, address p1, uint p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2));
}
function LOG40(address p0, address p1, string memory p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2));
}
function LOG40(address p0, address p1, bool p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2));
}
function LOG40(address p0, address p1, address p2) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2));
}
function LOG40(uint p0, uint p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, uint p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, string memory p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, bool p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3));
}
function LOG40(uint p0, address p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, uint p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, string memory p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, bool p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3));
}
function LOG40(string memory p0, address p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, uint p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, string memory p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, bool p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3));
}
function LOG40(bool p0, address p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, uint p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, string memory p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, bool p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, uint p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, uint p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, uint p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, uint p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, string memory p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, string memory p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, string memory p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, string memory p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, bool p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, bool p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, bool p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, bool p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, address p2, uint p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, address p2, string memory p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, address p2, bool p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3));
}
function LOG40(address p0, address p1, address p2, address p3) internal view { //inject NONSTANDARD NAMING
_SENDLOGPAYLOAD51(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3));
}
}
interface iuniswapv2factory11 { //inject NONSTANDARD NAMING
event PAIRCREATED16(address indexed token0, address indexed token1, address pair, uint); //inject NONSTANDARD NAMING
function FEETO47() external view returns (address); //inject NONSTANDARD NAMING
function FEETOSETTER62() external view returns (address); //inject NONSTANDARD NAMING
function GETPAIR25(address tokenA, address tokenB) external view returns (address pair); //inject NONSTANDARD NAMING
function ALLPAIRS78(uint) external view returns (address pair); //inject NONSTANDARD NAMING
function ALLPAIRSLENGTH45() external view returns (uint); //inject NONSTANDARD NAMING
function CREATEPAIR19(address tokenA, address tokenB) external returns (address pair); //inject NONSTANDARD NAMING
function SETFEETO7(address) external; //inject NONSTANDARD NAMING
function SETFEETOSETTER93(address) external; //inject NONSTANDARD NAMING
}
contract feeapprover21 is ownableupgradesafe25 { //inject NONSTANDARD NAMING
using safemath14 for uint256;
function INITIALIZE58( //inject NONSTANDARD NAMING
address _NANOCOREAddress,
address _WETHAddress,
address _uniswapFactory
) public INITIALIZER65 {
ownableupgradesafe25.__OWNABLE_INIT13();
nanocoreTokenAddress = _NANOCOREAddress;
WETHAddress = _WETHAddress;
tokenUniswapPair = iuniswapv2factory11(_uniswapFactory).GETPAIR25(WETHAddress,nanocoreTokenAddress);
feePercentX100 = 15;
paused = false; // We start paused until sync post LGE happens.
}
address tokenUniswapPair;
iuniswapv2factory11 public uniswapFactory;
address internal WETHAddress;
address nanocoreTokenAddress;
address nanocoreVaultAddress;
uint8 public feePercentX100; // max 255 = 25.5% artificial clamp
uint256 public lastTotalSupplyOfLPTokens;
bool paused;
// Pausing transfers of the token
function SETPAUSED71(bool _pause) public ONLYOWNER81 { //inject NONSTANDARD NAMING
paused = _pause;
}
function SETFEEMULTIPLIER40(uint8 _feeMultiplier) public ONLYOWNER81 { //inject NONSTANDARD NAMING
feePercentX100 = _feeMultiplier;
}
function SETNANOCOREVAULTADDRESS89(address _nanocoreVaultAddress) public ONLYOWNER81 { //inject NONSTANDARD NAMING
nanocoreVaultAddress = _nanocoreVaultAddress;
}
function SYNC99() public { //inject NONSTANDARD NAMING
uint256 _LPSupplyOfPairTotal = ierc2086(tokenUniswapPair).TOTALSUPPLY25();
lastTotalSupplyOfLPTokens = _LPSupplyOfPairTotal;
}
function CALCULATEAMOUNTSAFTERFEE82( //inject NONSTANDARD NAMING
address sender,
address recipient, // unusued maybe use din future
uint256 amount
) public returns (uint256 transferToAmount, uint256 transferToFeeDistributorAmount)
{
require(paused == false, "FEE APPROVER: Transfers Paused");
uint256 _LPSupplyOfPairTotal = ierc2086(tokenUniswapPair).TOTALSUPPLY25();
// console.log("sender is " , sender);
// console.log("recipient is is " , recipient, 'pair is :', tokenUniswapPair);
// console.log("Old LP supply", lastTotalSupplyOfLPTokens);
// console.log("Current LP supply", _LPSupplyOfPairTotal);
if(sender == tokenUniswapPair)
require(lastTotalSupplyOfLPTokens <= _LPSupplyOfPairTotal, "Liquidity withdrawals forbidden");
// console.log('Sender is pair' , sender == tokenUniswapPair);
// console.log('lastTotalSupplyOfLPTokens <= _LPSupplyOfPairTotal' , lastTotalSupplyOfLPTokens <= _LPSupplyOfPairTotal);
if(sender == nanocoreVaultAddress || sender == tokenUniswapPair ) { // Dont have a fee when nanocorevault is sending, or infinite loop
console87.LOG40("Sending without fee"); // And when pair is sending ( buys are happening, no tax on it)
transferToFeeDistributorAmount = 0;
transferToAmount = amount;
}
else {
console87.LOG40("Normal fee transfer");
transferToFeeDistributorAmount = amount.MUL16(feePercentX100).DIV54(1000);
transferToAmount = amount.SUB60(transferToFeeDistributorAmount);
}
lastTotalSupplyOfLPTokens = _LPSupplyOfPairTotal;
}
}
|
inject NONSTANDARD NAMING
|
function LOG40(string memory p0, bool p1, bool p2, bool p3) internal view {
| 1,019,066 |
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./partial_match/56/0xF7Cb81E39bE4778B8f950F949edB4f5461B6036F/sources/MasterDrunk.sol
|
Update reward variables of the given pool to be up-to-date.
|
function updatePool(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
if (block.number <= pool.lastRewardBlock) {
return;
}
uint256 lpSupply = pool.lpToken.balanceOf(address(this));
if (lpSupply == 0 || pool.allocPoint == 0) {
pool.lastRewardBlock = block.number;
return;
}
uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
uint256 drunkReward = multiplier.mul(drunkPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
drunk.mint(devaddr, drunkReward.div(10));
drunk.mint(address(this), drunkReward);
pool.accDrunkPerShare = pool.accDrunkPerShare.add(drunkReward.mul(1e12).div(lpSupply));
pool.lastRewardBlock = block.number;
}
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// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IKanamitCore {
function transferOwnership(address newOwner) external;
function transfer(address _to, uint256 _tokenId) external;
function owner() external view returns (address);
function getUriOwner(string memory uri)
external
view
returns (address addressOwner);
function totalSupply() external view returns (uint256);
function createAsset(address _owner, string memory _uri)
external
returns (uint256);
function getAssetId(string memory uri)
external
view
returns (uint256 assetId);
function getAssetById(uint256 _id)
external
view
returns (uint256 assetHash);
}
contract KanamitTrade is Ownable {
address private kCore;
string public name = "Kanamit Trade contract";
string public symbol = "KanamitTrade";
uint8 public decimals = 18;
struct Bid {
uint256 bidId;
uint256 reqId; //对应于中心化系统的 bid表的id字段
address bidder; //出价地址
uint256 amount; //出价金额
bool cancel; //是否取消
}
struct AuctionInfo {
uint256 auctionId;
uint256 hashUri;
uint256 status; //状态；0，拍卖关闭；1，拍卖开启
//Bid数据结构--数组+map
uint256[] arrReqId; //出价信息数组；数据下标即为 bidId
mapping(uint256 => Bid) mapReqIdBid; //map<reqId, Bid>
}
uint256 private _nextAuctionId; //下一个可用的拍卖ID；
mapping(uint256 => AuctionInfo) private mapAuctionInfo; //map<auctionId, auctionInfo>
mapping(uint256 => uint256) private mapUriAuctionId; //map<hashUri, AuctionId>
mapping(uint256 => address) private mapUriOwner; //map<hashUri, addressOwner>
event Approval(address indexed src, address indexed guy, uint256 wad);
event Transfer(address indexed src, address indexed dst, uint256 wad);
event Deposit(address indexed dst, uint256 wad);
event Withdrawal(address indexed src, uint256 wad);
event EventCreate(address indexed owner, string uri, uint256 assetId);
event EventBid(address indexed bidder, uint256 amount, uint256 reqId);
event EventAccept(address indexed winner, uint256 amount, bool success);
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
constructor(address _kCore) public {
kCore = _kCore;
_nextAuctionId = 1; //初始化为1； 0值无效； 后续map查询，当auctionId为0，视为无效auctionId
}
function _getNextAuctionId() public view returns (uint256) {
return _nextAuctionId;
}
//@brief 获取当前最大可用的auctionID，并使_nextAuctionId+1
function _IncreaseNextAuctionId() public returns (uint256) {
return _nextAuctionId++;
}
function bid(uint256 reqId, string memory uri)
public
payable
returns (
uint256 retReqId,
uint256 retAuctionId,
uint256 retBidId
)
{
require(msg.sender != address(0), "bad bidder address");
require(msg.value != 0, "value can not be zero");
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
require(msg.sender != mapUriOwner[hashUri], "uriOwner can not bid");
require(
address(this) == this.coreGetUriOwner(uri),
"uri-NFT coreOwner must be k-tade"
);
uint256 assetId = IKanamitCore(kCore).getAssetId(uri);
require(assetId != 0, "uri must be mint, first of all");
uint256 amount = msg.value;
(uint256 currAuctionId, uint256 status) = getCurrentAuctionStatus(uri);
//新增拍卖
// uri之前没有拍卖过，或者当前的拍卖已经关闭，需要新增拍卖
if (0 == currAuctionId || 1 == status) {
currAuctionId = _IncreaseNextAuctionId();
mapUriAuctionId[hashUri] = currAuctionId;
}
//出价额度校验
uint256 currBidLen = mapAuctionInfo[currAuctionId].arrReqId.length;
if (currBidLen > 0) {
uint256 currReqId =
mapAuctionInfo[currAuctionId].arrReqId[currBidLen - 1];
require(
amount >
mapAuctionInfo[currAuctionId].mapReqIdBid[currReqId].amount,
"must large than last bid amount"
);
}
//新增出价
mapAuctionInfo[currAuctionId].auctionId = currAuctionId;
mapAuctionInfo[currAuctionId].hashUri = hashUri;
mapAuctionInfo[currAuctionId].arrReqId.push(reqId);
uint256 bidId = mapAuctionInfo[currAuctionId].arrReqId.length - 1;
mapAuctionInfo[currAuctionId].mapReqIdBid[reqId].bidId = bidId;
mapAuctionInfo[currAuctionId].mapReqIdBid[reqId].reqId = reqId;
mapAuctionInfo[currAuctionId].mapReqIdBid[reqId].bidder = msg.sender;
mapAuctionInfo[currAuctionId].mapReqIdBid[reqId].amount = amount;
mapAuctionInfo[currAuctionId].mapReqIdBid[reqId].cancel = false;
balanceOf[address(this)] += msg.value;
emit EventBid(msg.sender, msg.value, reqId);
retReqId = reqId;
retAuctionId = currAuctionId;
retBidId = bidId;
}
//@param uri
//@param auctionId; 0，当前的拍卖; 非0，指定auctionId的拍卖
function getBids(string memory uri, uint256 inputAuction)
public
view
returns (
uint256 auctionId,
uint256 totalBids,
uint256[] memory bidIds,
uint256[] memory reqIds,
address[] memory addressBidders,
uint256[] memory amounts,
bool[] memory cancels
)
{
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
uint256 currAuctinId = inputAuction;
//当前拍卖ID
if (inputAuction == 0) {
currAuctinId = mapUriAuctionId[hashUri];
}
auctionId = currAuctinId;
totalBids = 0;
if (currAuctinId > 0) {
totalBids = mapAuctionInfo[currAuctinId].arrReqId.length;
}
uint256[] memory retBidIds = new uint256[](totalBids);
uint256[] memory retReqIds = new uint256[](totalBids);
address[] memory retAddressBidders = new address[](totalBids);
uint256[] memory retAmounts = new uint256[](totalBids);
bool[] memory retCancel = new bool[](totalBids);
for (uint256 i = 0; i < totalBids; i++) {
uint256 currReqId = mapAuctionInfo[currAuctinId].arrReqId[i];
retBidIds[i] = mapAuctionInfo[currAuctinId].mapReqIdBid[currReqId]
.bidId;
retReqIds[i] = mapAuctionInfo[currAuctinId].mapReqIdBid[currReqId]
.reqId;
retAddressBidders[i] = mapAuctionInfo[currAuctinId].mapReqIdBid[
currReqId
]
.bidder;
retAmounts[i] = mapAuctionInfo[currAuctinId].mapReqIdBid[currReqId]
.amount;
retCancel[i] = mapAuctionInfo[currAuctinId].mapReqIdBid[currReqId]
.cancel;
}
bidIds = retBidIds;
reqIds = retReqIds;
addressBidders = retAddressBidders;
amounts = retAmounts;
cancels = retCancel;
}
//@return auctionId，拍卖ID；0， 表示拍卖不存在；非0，有效的拍卖ID
//@return status，拍卖状态；0，拍卖中； 1， 拍卖已关闭；
function getCurrentAuctionStatus(string memory uri)
public
view
returns (uint256 auctionId, uint256 status)
{
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
auctionId = mapUriAuctionId[hashUri];
status = 0;
if (auctionId > 0) status = mapAuctionInfo[auctionId].status;
}
//@return status，拍卖状态；0，拍卖中； 1， 拍卖已关闭；
function getAuctionStatus(string memory uri, uint256 inputAuction)
public
view
returns (uint256 status)
{
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
uint256 currAuctinId = inputAuction;
//当前拍卖ID
if (inputAuction == 0) {
currAuctinId = mapUriAuctionId[hashUri];
}
return mapAuctionInfo[currAuctinId].status;
}
function coreGetUriOwner(string memory uri)
external
view
returns (address addressOwner)
{
return IKanamitCore(kCore).getUriOwner(uri);
}
function accept(string memory uri, uint256 amount)
public
returns (bool success)
{
success = false;
(uint256 currAuctionId, uint256 status) = getCurrentAuctionStatus(uri);
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
require(msg.sender == mapUriOwner[hashUri], "only uriOwner can accept");
require(amount > 0, "amount can not be 0");
require(
currAuctionId != 0,
"no auction for uri. first of all, uri need a bid."
);
require(status != 1, "auction is close");
(
uint256 auctionId,
uint256 totalBids,
uint256[] memory bidIds,
uint256[] memory reqIds,
address[] memory addressBidders,
uint256[] memory amounts,
bool[] memory cancels
) = getBids(uri, currAuctionId);
require(bidIds.length == totalBids, "array element error");
require(reqIds.length == totalBids, "array element error");
require(addressBidders.length == totalBids, "array element error");
require(amounts.length == totalBids, "array element error");
require(cancels.length == totalBids, "array element error");
//查找winner
uint256 iIndexWinner = 0;
for (uint256 i = 0; i < totalBids; i++) {
if (true == cancels[i]) continue; //忽略已撤销的
if (amount == amounts[i]) {
success = true;
iIndexWinner = i;
}
}
//没有winner 直接报错
require(true == success, "no match bid");
//loser返还主币
for (uint256 i = 0; i < totalBids; i++) {
if (true == cancels[i]) continue; //忽略已撤销的
if (i == iIndexWinner) continue; //忽略winner
//losser返还主币
_returnMainCoin(payable(addressBidders[i]), amounts[i]);
}
_transerUriOwner(uri, addressBidders[iIndexWinner]);
//旧owner获得主币
// require(balanceOf[address(this)] >= amount);
// balanceOf[address(this)] -= amount;
// msg.sender.transfer(amount);
// emit Withdrawal(msg.sender, amount); //withdraw事件
_returnMainCoin(payable(mapUriOwner[hashUri]), amount);
//Uri owner，从本合约转到winner
mapUriOwner[hashUri] = addressBidders[iIndexWinner];
//拍卖状态，调整为已关闭
mapAuctionInfo[auctionId].status = 1;
//accept事件
emit EventAccept(addressBidders[iIndexWinner], amount, success);
return success;
}
function _returnMainCoin(address payable addrReturn, uint256 amount)
internal
{
require(balanceOf[address(this)] >= amount);
balanceOf[address(this)] -= amount;
addrReturn.transfer(amount);
emit Withdrawal(addrReturn, amount);
}
function _transerUriOwner(string memory uri, address addressBidder)
internal
{
uint256 assetId = this.coreGetAssetId(uri);
require(assetId != 0, "assetId error");
IKanamitCore(kCore).transfer(addressBidder, assetId);
}
function coreAddress() public view returns (address) {
return kCore;
}
function setCoreAddress(address _kCore) public onlyOwner() {
require(_kCore != address(0), "invalid address");
kCore = _kCore;
}
function coreTransferOwnership(address newOwner) public onlyOwner() {
IKanamitCore(kCore).transferOwnership(newOwner);
}
function coreTotalSupply() public view returns (uint256) {
return IKanamitCore(kCore).totalSupply();
}
function coreCreateAsset(address _owner, string memory _uri)
public
onlyOwner()
returns (uint256)
{
uint256 hashUri = uint256(keccak256(abi.encodePacked(_uri)));
require(mapUriOwner[hashUri] == address(0), "uri already mint");
mapUriOwner[hashUri] = _owner;
uint256 assetId = IKanamitCore(kCore).createAsset(address(this), _uri);
emit EventCreate(_owner, _uri, assetId);
}
function coreGetAssetId(string memory uri) external view returns (uint256) {
return IKanamitCore(kCore).getAssetId(uri);
}
function coreGetAssetById(uint256 _id)
external
view
returns (uint256 assetHash)
{
return IKanamitCore(kCore).getAssetById(_id);
}
//@return found，资产是否存在；true，存在； false，不存在，需要创建（createAsset）
//@return assetId，资产ID；0，资产不存在； 非0，资产对应的assetId
//@return addrOwner，属主地址；0，属主不存在； 非0，属主地址
function getAsset(string memory uri)
external
view
returns (
bool found,
uint256 assetId,
address addrOwner
)
{
found = false;
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
assetId = IKanamitCore(kCore).getAssetId(uri);
addrOwner = mapUriOwner[hashUri];
if (assetId != 0 && addrOwner != address(0)) found = true;
}
function getUriOwner(string memory uri) external view returns (address) {
uint256 hashUri = uint256(keccak256(abi.encodePacked(uri)));
return mapUriOwner[hashUri];
}
fallback() external payable {
deposit();
}
receive() external payable {
deposit();
}
function deposit() public payable {
balanceOf[msg.sender] += msg.value;
emit Deposit(msg.sender, msg.value);
}
function withdraw(uint256 wad) public {
require(balanceOf[msg.sender] >= wad);
balanceOf[msg.sender] -= wad;
msg.sender.transfer(wad);
emit Withdrawal(msg.sender, wad);
}
function totalSupply() public view returns (uint256) {
return address(this).balance;
}
function approve(address guy, uint256 wad) public returns (bool) {
allowance[msg.sender][guy] = wad;
emit Approval(msg.sender, guy, wad);
return true;
}
function transfer(address dst, uint256 wad) public returns (bool) {
return transferFrom(msg.sender, dst, wad);
}
function transferFrom(
address src,
address dst,
uint256 wad
) public returns (bool) {
require(balanceOf[src] >= wad);
if (src != msg.sender && allowance[src][msg.sender] != uint256(-1)) {
require(allowance[src][msg.sender] >= wad);
allowance[src][msg.sender] -= wad;
}
balanceOf[src] -= wad;
balanceOf[dst] += wad;
emit Transfer(src, dst, wad);
return true;
}
}
|
对应于中心化系统的 bid表的id字段
|
uint256 reqId;
| 6,453,284 |
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1,
166,
112,
122,
166,
123,
247,
165,
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241,
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] |
[
1,
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[
1,
3639,
2254,
5034,
1111,
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225,
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-100
] |
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