Contract
0x03ac1Aa1ff470cf376e6b7cD3A3389Ad6D922A74
2
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Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xc6D714170fE766691670f12c2b45C1f34405AAb6
Contract Name:
StakingRewards
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.7.6; // Libraries import '@openzeppelin/contracts/math/Math.sol'; import '@openzeppelin/contracts/math/SafeMath.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; // Interfaces import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './interfaces/IStakingRewards.sol'; // Contracts import '@openzeppelin/contracts/utils/ReentrancyGuard.sol'; import '@openzeppelin/contracts/access/Ownable.sol'; import './RewardsDistributionRecipient.sol'; contract StakingRewards is RewardsDistributionRecipient, ReentrancyGuard, Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; /* ========== STATE VARIABLES ========== */ IERC20 public rewardsTokenDPX; IERC20 public rewardsTokenRDPX; IERC20 public stakingToken; uint256 public boost = 0; uint256 public periodFinish = 0; uint256 public boostedFinish = 0; uint256 public rewardRateDPX = 0; uint256 public rewardRateRDPX = 0; uint256 public rewardsDuration; uint256 public lastUpdateTime; uint256 public rewardPerTokenStoredDPX; uint256 public rewardPerTokenStoredRDPX; uint256 public boostedTimePeriod; uint256 public id; mapping(address => bool) public whitelistedContracts; mapping(address => uint256) public userDPXRewardPerTokenPaid; mapping(address => uint256) public userRDPXRewardPerTokenPaid; mapping(address => uint256) public rewardsDPX; mapping(address => uint256) public rewardsRDPX; mapping(address => uint256) private _balances; uint256 private _totalSupply; /* ========== CONSTRUCTOR ========== */ constructor( address _rewardsDistribution, address _rewardsTokenDPX, address _rewardsTokenRDPX, address _stakingToken, uint256 _rewardsDuration, uint256 _boostedTimePeriod, uint256 _boost, uint256 _id ) Ownable() { rewardsTokenDPX = IERC20(_rewardsTokenDPX); rewardsTokenRDPX = IERC20(_rewardsTokenRDPX); stakingToken = IERC20(_stakingToken); rewardsDistribution = _rewardsDistribution; rewardsDuration = _rewardsDuration; boostedTimePeriod = _boostedTimePeriod; boost = _boost; id = _id; } /* ========== VIEWS ========== */ function isContract(address addr) public view returns (bool) { uint256 size; assembly { size := extcodesize(addr) } return size > 0; } function totalSupply() external view returns (uint256) { return _totalSupply; } function balanceOf(address account) external view returns (uint256) { return _balances[account]; } function lastTimeRewardApplicable() public view returns (uint256) { uint256 timeApp = Math.min(block.timestamp, periodFinish); return timeApp; } function rewardPerToken() public view returns (uint256, uint256) { if (_totalSupply == 0) { uint256 perTokenRateDPX = rewardPerTokenStoredDPX; uint256 perTokenRateRDPX = rewardPerTokenStoredRDPX; return (perTokenRateDPX, perTokenRateRDPX); } if (block.timestamp < boostedFinish) { uint256 perTokenRateDPX = rewardPerTokenStoredDPX.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRateDPX.mul(boost)).mul(1e18).div( _totalSupply ) ); uint256 perTokenRateRDPX = rewardPerTokenStoredRDPX.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRateRDPX.mul(boost)).mul(1e18).div( _totalSupply ) ); return (perTokenRateDPX, perTokenRateRDPX); } else { if (lastUpdateTime < boostedFinish) { uint256 perTokenRateDPX = rewardPerTokenStoredDPX .add( boostedFinish.sub(lastUpdateTime).mul(rewardRateDPX.mul(boost)).mul(1e18).div( _totalSupply ) ) .add( lastTimeRewardApplicable().sub(boostedFinish).mul(rewardRateDPX).mul(1e18).div( _totalSupply ) ); uint256 perTokenRateRDPX = rewardPerTokenStoredRDPX .add( boostedFinish.sub(lastUpdateTime).mul(rewardRateRDPX.mul(boost)).mul(1e18).div( _totalSupply ) ) .add( lastTimeRewardApplicable().sub(boostedFinish).mul(rewardRateRDPX).mul(1e18).div( _totalSupply ) ); return (perTokenRateDPX, perTokenRateRDPX); } else { uint256 perTokenRateDPX = rewardPerTokenStoredDPX.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRateDPX).mul(1e18).div( _totalSupply ) ); uint256 perTokenRateRDPX = rewardPerTokenStoredRDPX.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRateRDPX).mul(1e18).div( _totalSupply ) ); return (perTokenRateDPX, perTokenRateRDPX); } } } function earned(address account) public view returns (uint256 DPXtokensEarned, uint256 RDPXtokensEarned) { uint256 perTokenRateDPX; uint256 perTokenRateRDPX; (perTokenRateDPX, perTokenRateRDPX) = rewardPerToken(); DPXtokensEarned = _balances[account] .mul(perTokenRateDPX.sub(userDPXRewardPerTokenPaid[account])) .div(1e18) .add(rewardsDPX[account]); RDPXtokensEarned = _balances[account] .mul(perTokenRateRDPX.sub(userRDPXRewardPerTokenPaid[account])) .div(1e18) .add(rewardsRDPX[account]); } /* ========== MUTATIVE FUNCTIONS ========== */ function stake(uint256 amount) external payable isEligibleSender nonReentrant updateReward(msg.sender) { require(amount > 0, 'Cannot stake 0'); _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); stakingToken.safeTransferFrom(msg.sender, address(this), amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public nonReentrant updateReward(msg.sender) { require(amount > 0, 'Cannot withdraw 0'); require(amount <= _balances[msg.sender], 'Insufficent balance'); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); stakingToken.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); } function withdrawRewardTokens(uint256 amountDPX, uint256 amountRDPX) public onlyOwner returns (uint256, uint256) { address OwnerAddress = owner(); if (OwnerAddress == msg.sender) { IERC20(rewardsTokenDPX).safeTransfer(OwnerAddress, amountDPX); IERC20(rewardsTokenRDPX).safeTransfer(OwnerAddress, amountRDPX); } return (amountDPX, amountRDPX); } function compound() public nonReentrant updateReward(msg.sender) { uint256 rewardDPX = rewardsDPX[msg.sender]; require(rewardDPX > 0, 'stake address not found'); require(rewardsTokenDPX == stakingToken, "Can't stake the reward token."); rewardsDPX[msg.sender] = 0; _totalSupply = _totalSupply.add(rewardDPX); _balances[msg.sender] = _balances[msg.sender].add(rewardDPX); emit RewardCompounded(msg.sender, rewardDPX); } function getReward(uint256 rewardsTokenID) public nonReentrant updateReward(msg.sender) { if (rewardsTokenID == 0) { uint256 rewardDPX = rewardsDPX[msg.sender]; require(rewardDPX > 0, 'can not withdraw 0 DPX reward'); rewardsDPX[msg.sender] = 0; rewardsTokenDPX.safeTransfer(msg.sender, rewardDPX); emit RewardPaid(msg.sender, rewardDPX); } else if (rewardsTokenID == 1) { uint256 rewardRDPX = rewardsRDPX[msg.sender]; require(rewardRDPX > 0, 'can not withdraw 0 RDPX reward'); rewardsRDPX[msg.sender] = 0; rewardsTokenRDPX.safeTransfer(msg.sender, rewardRDPX); emit RewardPaid(msg.sender, rewardRDPX); } else { uint256 rewardDPX = rewardsDPX[msg.sender]; uint256 rewardRDPX = rewardsRDPX[msg.sender]; if (rewardDPX > 0) { rewardsDPX[msg.sender] = 0; rewardsTokenDPX.safeTransfer(msg.sender, rewardDPX); } if (rewardRDPX > 0) { rewardsRDPX[msg.sender] = 0; rewardsTokenRDPX.safeTransfer(msg.sender, rewardRDPX); } emit RewardPaid(msg.sender, rewardDPX); emit RewardPaid(msg.sender, rewardRDPX); } } function exit() external { getReward(2); withdraw(_balances[msg.sender]); } /* ========== RESTRICTED FUNCTIONS ========== */ function notifyRewardAmount(uint256 rewardDPX, uint256 rewardRDPX) external override onlyRewardsDistribution setReward(address(0)) { if (periodFinish == 0) { rewardRateDPX = rewardDPX.div(rewardsDuration.add(boostedTimePeriod)); rewardRateRDPX = rewardRDPX.div(rewardsDuration.add(boostedTimePeriod)); lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(rewardsDuration); boostedFinish = block.timestamp.add(boostedTimePeriod); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftoverDPX = remaining.mul(rewardRateDPX); uint256 leftoverRDPX = remaining.mul(rewardRateRDPX); rewardRateDPX = rewardDPX.add(leftoverDPX).div(rewardsDuration); rewardRateRDPX = rewardRDPX.add(leftoverRDPX).div(rewardsDuration); lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(rewardsDuration); } emit RewardAdded(rewardDPX, rewardRDPX); } function addToContractWhitelist(address _contract) external onlyOwner returns (bool) { require(isContract(_contract), 'StakingRewards: Address must be a contract address'); require(!whitelistedContracts[_contract], 'StakingRewards: Contract already whitelisted'); whitelistedContracts[_contract] = true; emit AddToContractWhitelist(_contract); return true; } function removeFromContractWhitelist(address _contract) external onlyOwner returns (bool) { require(whitelistedContracts[_contract], 'StakingRewards: Contract not whitelisted'); whitelistedContracts[_contract] = false; emit RemoveFromContractWhitelist(_contract); return true; } /* ========== MODIFIERS ========== */ // Modifier is eligible sender modifier modifier isEligibleSender() { if (isContract(msg.sender)) require(whitelistedContracts[msg.sender], 'StakingRewards: Contract must be whitelisted'); _; } // Modifier Set Reward modifier modifier setReward(address account) { (rewardPerTokenStoredDPX, rewardPerTokenStoredRDPX) = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { (rewardsDPX[account], rewardsRDPX[account]) = earned(account); userDPXRewardPerTokenPaid[account] = rewardPerTokenStoredDPX; userRDPXRewardPerTokenPaid[account] = rewardPerTokenStoredRDPX; } _; } // Modifier *Update Reward modifier* modifier updateReward(address account) { (rewardPerTokenStoredDPX, rewardPerTokenStoredRDPX) = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { (rewardsDPX[account], rewardsRDPX[account]) = earned(account); userDPXRewardPerTokenPaid[account] = rewardPerTokenStoredDPX; userRDPXRewardPerTokenPaid[account] = rewardPerTokenStoredRDPX; } _; } /* ========== EVENTS ========== */ event RewardUpdated(uint256 rewardDPX, uint256 rewardRDPX); event RewardAdded(uint256 rewardDPX, uint256 rewardRDPX); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); event RewardCompounded(address indexed user, uint256 rewardDPX); event AddToContractWhitelist(address indexed _contract); event RemoveFromContractWhitelist(address indexed _contract); } interface IUniswapV2ERC20 { function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.7.6; interface IStakingRewards { // Views function lastTimeRewardApplicable() external view returns (uint256); function rewardPerToken() external view returns (uint256, uint256); function earned(address account) external view returns (uint256, uint256); function getRewardForDuration() external view returns (uint256, uint256); function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); // Mutative function stake(uint256 amount) external payable; function withdraw(uint256 amount) external; function getReward(uint256 rewardsTokenID) external; function exit() external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../GSN/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.7.6; abstract contract RewardsDistributionRecipient { address public rewardsDistribution; function notifyRewardAmount(uint256 rewardDPX, uint256 rewardRDPX) external virtual; modifier onlyRewardsDistribution() { require(msg.sender == rewardsDistribution, 'Caller is not RewardsDistribution contract'); _; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
[{"inputs":[{"internalType":"address","name":"_rewardsDistribution","type":"address"},{"internalType":"address","name":"_rewardsTokenDPX","type":"address"},{"internalType":"address","name":"_rewardsTokenRDPX","type":"address"},{"internalType":"address","name":"_stakingToken","type":"address"},{"internalType":"uint256","name":"_rewardsDuration","type":"uint256"},{"internalType":"uint256","name":"_boostedTimePeriod","type":"uint256"},{"internalType":"uint256","name":"_boost","type":"uint256"},{"internalType":"uint256","name":"_id","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_contract","type":"address"}],"name":"AddToContractWhitelist","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_contract","type":"address"}],"name":"RemoveFromContractWhitelist","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewardDPX","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardRDPX","type":"uint256"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"rewardDPX","type":"uint256"}],"name":"RewardCompounded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewardDPX","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardRDPX","type":"uint256"}],"name":"RewardUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[{"internalType":"address","name":"_contract","type":"address"}],"name":"addToContractWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"boost","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"boostedFinish","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"boostedTimePeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"compound","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"DPXtokensEarned","type":"uint256"},{"internalType":"uint256","name":"RDPXtokensEarned","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"exit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"rewardsTokenID","type":"uint256"}],"name":"getReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"id","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"isContract","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastTimeRewardApplicable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"rewardDPX","type":"uint256"},{"internalType":"uint256","name":"rewardRDPX","type":"uint256"}],"name":"notifyRewardAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"periodFinish","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_contract","type":"address"}],"name":"removeFromContractWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardPerToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerTokenStoredDPX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardPerTokenStoredRDPX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardRateDPX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardRateRDPX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewardsDPX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsDistribution","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsDuration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewardsRDPX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsTokenDPX","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsTokenRDPX","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userDPXRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userRDPXRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistedContracts","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountDPX","type":"uint256"},{"internalType":"uint256","name":"amountRDPX","type":"uint256"}],"name":"withdrawRewardTokens","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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