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Contract Name:
BalancerStrategy
Compiler Version
v0.8.7+commit.e28d00a7
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "./BaseStrategy.sol"; import "../accumulator/BalancerAccumulator.sol"; import "../interfaces/ILiquidityGauge.sol"; import "../interfaces/IMultiRewards.sol"; import "../staking/SdtDistributorV2.sol"; contract BalancerStrategy is BaseStrategy { using SafeERC20 for IERC20; BalancerAccumulator public accumulator; address public sdtDistributor; address public constant BAL_MINTER = 0x239e55F427D44C3cc793f49bFB507ebe76638a2b; address public constant BAL = 0xba100000625a3754423978a60c9317c58a424e3D; struct ClaimerReward { address rewardToken; uint256 amount; } enum MANAGEFEE { PERFFEE, VESDTFEE, ACCUMULATORFEE, CLAIMERREWARD } /* ========== CONSTRUCTOR ========== */ constructor( ILocker _locker, address _governance, address _receiver, BalancerAccumulator _accumulator, address _veSDTFeeProxy, address _sdtDistributor ) BaseStrategy(_locker, _governance, _receiver) { accumulator = _accumulator; veSDTFeeProxy = _veSDTFeeProxy; sdtDistributor = _sdtDistributor; } /* ========== MUTATIVE FUNCTIONS ========== */ /// @notice function to deposit into a gauge /// @param _token token address /// @param _amount amount to deposit function deposit(address _token, uint256 _amount) external override onlyApprovedVault { IERC20(_token).transferFrom(msg.sender, address(locker), _amount); address gauge = gauges[_token]; require(gauge != address(0), "!gauge"); locker.execute(_token, 0, abi.encodeWithSignature("approve(address,uint256)", gauge, 0)); locker.execute(_token, 0, abi.encodeWithSignature("approve(address,uint256)", gauge, _amount)); (bool success, ) = locker.execute(gauge, 0, abi.encodeWithSignature("deposit(uint256)", _amount)); require(success, "Deposit failed!"); emit Deposited(gauge, _token, _amount); } /// @notice function to withdraw from a gauge /// @param _token token address /// @param _amount amount to withdraw function withdraw(address _token, uint256 _amount) external override onlyApprovedVault { uint256 _before = IERC20(_token).balanceOf(address(locker)); address gauge = gauges[_token]; require(gauge != address(0), "!gauge"); (bool success, ) = locker.execute(gauge, 0, abi.encodeWithSignature("withdraw(uint256)", _amount)); require(success, "Transfer failed!"); uint256 _after = IERC20(_token).balanceOf(address(locker)); uint256 _net = _after - _before; (success, ) = locker.execute(_token, 0, abi.encodeWithSignature("transfer(address,uint256)", msg.sender, _net)); require(success, "Transfer failed!"); emit Withdrawn(gauge, _token, _amount); } /// @notice function to send funds into the related accumulator /// @param _token token address /// @param _amount amount to send function sendToAccumulator(address _token, uint256 _amount) external onlyGovernance { IERC20(_token).approve(address(accumulator), _amount); accumulator.depositToken(_token, _amount); } /// @notice function to claim the reward and distribute it /// @param _token BPT token address function claim(address _token) external override { address gauge = gauges[_token]; require(gauge != address(0), "!gauge"); uint256 balBeforeClaim = IERC20(BAL).balanceOf(address(locker)); // Claim BAL // within the mint() it calls the user checkpoint (bool success, ) = locker.execute( BAL_MINTER, 0, abi.encodeWithSignature("mint(address)", gauge) ); require(success, "BAL mint failed!"); uint256 balMinted = IERC20(BAL).balanceOf(address(locker)) - balBeforeClaim; // Send BAL here (success, ) = locker.execute( BAL, 0, abi.encodeWithSignature("transfer(address,uint256)", address(this), balMinted) ); require(success, "BAL transfer failed!"); // Distribute BAL uint256 balNetRewards = sendFee(gauge, balMinted); IERC20(BAL).approve(multiGauges[gauge], balNetRewards); ILiquidityGauge(multiGauges[gauge]).deposit_reward_token(BAL, balNetRewards); emit Claimed(gauge, BAL, balMinted); // Distribute SDT to the related gauge SdtDistributorV2(sdtDistributor).distribute(multiGauges[gauge]); // Claim rewards only if there is at least one extra reward if(ILiquidityGauge(gauge).reward_tokens(0) != address(0)) { (success, ) = locker.execute( gauge, 0, abi.encodeWithSignature("claim_rewards(address,address)", address(locker), address(this)) ); address rewardToken; uint256 rewardsBalance; for (uint8 i = 0; i < 8; i++) { rewardToken = ILiquidityGauge(gauge).reward_tokens(i); if (rewardToken == address(0)) { break; } rewardsBalance = IERC20(rewardToken).balanceOf(address(this)); IERC20(rewardToken).approve(multiGauges[gauge], rewardsBalance); ILiquidityGauge(multiGauges[gauge]).deposit_reward_token(rewardToken, rewardsBalance); emit Claimed(gauge, rewardToken, rewardsBalance); } } } /// @notice internal function for distributing fees to recipients /// @param _gauge gauge address /// @param _rewardsBalance total balance to distribute function sendFee(address _gauge, uint256 _rewardsBalance) internal returns(uint256) { // calculate the amount for each fee recipient uint256 multisigFee = (_rewardsBalance * perfFee[_gauge]) / BASE_FEE; uint256 accumulatorPart = (_rewardsBalance * accumulatorFee[_gauge]) / BASE_FEE; uint256 veSDTPart = (_rewardsBalance * veSDTFee[_gauge]) / BASE_FEE; uint256 claimerPart = (_rewardsBalance * claimerRewardFee[_gauge]) / BASE_FEE; // send IERC20(BAL).approve(address(accumulator), accumulatorPart); accumulator.depositToken(BAL, accumulatorPart); IERC20(BAL).transfer(rewardsReceiver, multisigFee); IERC20(BAL).transfer(veSDTFeeProxy, veSDTPart); IERC20(BAL).transfer(msg.sender, claimerPart); return _rewardsBalance - multisigFee - accumulatorPart - veSDTPart - claimerPart; } /// @notice function to toggle a vault /// @param _vault vault address function toggleVault(address _vault) external override onlyGovernanceOrFactory { require(_vault != address(0), "zero address"); vaults[_vault] = !vaults[_vault]; emit VaultToggled(_vault, vaults[_vault]); } /// @notice function to set a new gauge /// It permits to set it as address(0), for disabling it /// @param _token token address /// @param _gauge gauge address function setGauge(address _token, address _gauge) external override onlyGovernanceOrFactory { require(_token != address(0), "zero address"); // Set new gauge gauges[_token] = _gauge; emit GaugeSet(_gauge, _token); } /// @notice function to set a multi gauge /// @param _gauge gauge address /// @param _multiGauge multi gauge address function setMultiGauge(address _gauge, address _multiGauge) external override onlyGovernanceOrFactory { require(_gauge != address(0), "zero address"); require(_multiGauge != address(0), "zero address"); multiGauges[_gauge] = _multiGauge; } /// @notice function to set a new veSDTProxy /// @param _newVeSDTProxy veSdtProxy address function setVeSDTProxy(address _newVeSDTProxy) external onlyGovernance { require(_newVeSDTProxy != address(0), "zero address"); veSDTFeeProxy = _newVeSDTProxy; } /// @notice function to set a new accumulator /// @param _newAccumulator accumulator address function setAccumulator(address _newAccumulator) external onlyGovernance { require(_newAccumulator != address(0), "zero address"); accumulator = BalancerAccumulator(_newAccumulator); } /// @notice function to set a new reward receiver /// @param _newRewardsReceiver reward receiver address function setRewardsReceiver(address _newRewardsReceiver) external onlyGovernance { require(_newRewardsReceiver != address(0), "zero address"); rewardsReceiver = _newRewardsReceiver; } /// @notice function to set a new governance address /// @param _newGovernance governance address function setGovernance(address _newGovernance) external onlyGovernance { require(_newGovernance != address(0), "zero address"); governance = _newGovernance; } /// @notice function to set the vault/gauge factory /// @param _newVaultGaugeFactory factory address function setVaultGaugeFactory(address _newVaultGaugeFactory) external onlyGovernance { require(_newVaultGaugeFactory != address(0), "zero address"); vaultGaugeFactory = _newVaultGaugeFactory; } /// @notice function to set new fees /// @param _manageFee manageFee /// @param _gauge gauge address /// @param _newFee new fee to set function manageFee( MANAGEFEE _manageFee, address _gauge, uint256 _newFee ) external onlyGovernanceOrFactory { require(_gauge != address(0), "zero address"); if (_manageFee == MANAGEFEE.PERFFEE) { // 0 perfFee[_gauge] = _newFee; } else if (_manageFee == MANAGEFEE.VESDTFEE) { // 1 veSDTFee[_gauge] = _newFee; } else if (_manageFee == MANAGEFEE.ACCUMULATORFEE) { //2 accumulatorFee[_gauge] = _newFee; } else if (_manageFee == MANAGEFEE.CLAIMERREWARD) { // 3 claimerRewardFee[_gauge] = _newFee; } require( perfFee[_gauge] + veSDTFee[_gauge] + accumulatorFee[_gauge] + claimerRewardFee[_gauge] <= BASE_FEE, "fee to high" ); } /// @notice execute a function /// @param _to Address to sent the value to /// @param _value Value to be sent /// @param _data Call function data function execute( address _to, uint256 _value, bytes calldata _data ) external onlyGovernance returns (bool, bytes memory) { (bool success, bytes memory result) = _to.call{ value: _value }(_data); return (success, result); } }
// SPDX-License-Identifier: MIT // 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' 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"); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; import "../interfaces/ILocker.sol"; contract BaseStrategy { /* ========== STATE VARIABLES ========== */ ILocker public locker; address public governance; address public rewardsReceiver; address public veSDTFeeProxy; address public vaultGaugeFactory; uint256 public constant BASE_FEE = 10_000; mapping(address => address) public gauges; mapping(address => bool) public vaults; mapping(address => uint256) public perfFee; mapping(address => address) public multiGauges; mapping(address => uint256) public accumulatorFee; // gauge -> fee mapping(address => uint256) public claimerRewardFee; // gauge -> fee mapping(address => uint256) public veSDTFee; // gauge -> fee /* ========== EVENTS ========== */ event Deposited(address _gauge, address _token, uint256 _amount); event Withdrawn(address _gauge, address _token, uint256 _amount); event Claimed(address _gauge, address _token, uint256 _amount); event RewardReceiverSet(address _gauge, address _receiver); event VaultToggled(address _vault, bool _newState); event GaugeSet(address _gauge, address _token); /* ========== MODIFIERS ========== */ modifier onlyGovernance() { require(msg.sender == governance, "!governance"); _; } modifier onlyApprovedVault() { require(vaults[msg.sender], "!approved vault"); _; } modifier onlyGovernanceOrFactory() { require(msg.sender == governance || msg.sender == vaultGaugeFactory, "!governance && !factory"); _; } /* ========== CONSTRUCTOR ========== */ constructor( ILocker _locker, address _governance, address _receiver ) { locker = _locker; governance = _governance; rewardsReceiver = _receiver; } /* ========== MUTATIVE FUNCTIONS ========== */ function deposit(address _token, uint256 _amount) external virtual onlyApprovedVault {} function withdraw(address _token, uint256 _amount) external virtual onlyApprovedVault {} function claim(address _gauge) external virtual {} function toggleVault(address _vault) external virtual onlyGovernanceOrFactory {} function setGauge(address _token, address _gauge) external virtual onlyGovernanceOrFactory {} function setMultiGauge(address _gauge, address _multiGauge) external virtual onlyGovernanceOrFactory {} }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; import "./BaseAccumulator.sol"; /// @title A contract that accumulates rewards and notifies them to the LGV4 /// @author StakeDAO contract BalancerAccumulator is BaseAccumulator { address[] public tokenData; /* ========== CONSTRUCTOR ========== */ constructor(address _tokenReward, address _gauge) BaseAccumulator(_tokenReward, _gauge) {} /* ========== MUTATIVE FUNCTIONS ========== */ /// @notice Claims rewards from the locker and notifies it to the LGV4 /// @param _amount amount to notify function claimAndNotify(uint256 _amount) external { require(locker != address(0), "locker not set"); ILocker(locker).claimRewards(tokenReward, address(this)); _notifyReward(tokenReward, _amount); _distributeSDT(); } /// @notice Claims rewards from the locker and notify all to the LGV4 function claimAndNotifyAll() external { require(locker != address(0), "locker not set"); ILocker(locker).claimRewards(tokenReward, address(this)); uint256 amount = IERC20(tokenReward).balanceOf(address(this)); _notifyReward(tokenReward, amount); _distributeSDT(); } /// @notice Claims rewards from the locker and notify all to the LGV4 function claimAllRewardsAndNotify() external { require(locker != address(0), "locker not set"); ILocker(locker).claimAllRewards(tokenData, address(this)); _notifyAllExtraReward(tokenData); } function addReward(address token) external { require(msg.sender == governance, "!gov"); tokenData.push(token); } function setTokenRewards(address[] calldata tokens) external { require(msg.sender == governance, "!gov"); tokenData = tokens; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.7; interface ILiquidityGauge { struct Reward { address token; address distributor; uint256 period_finish; uint256 rate; uint256 last_update; uint256 integral; } // solhint-disable-next-line function deposit_reward_token(address _rewardToken, uint256 _amount) external; // solhint-disable-next-line function claim_rewards_for(address _user, address _recipient) external; // // solhint-disable-next-line // function claim_rewards_for(address _user) external; // solhint-disable-next-line function deposit(uint256 _value, address _addr) external; // solhint-disable-next-line function reward_tokens(uint256 _i) external view returns (address); // solhint-disable-next-line function reward_data(address _tokenReward) external view returns (Reward memory); function balanceOf(address) external returns (uint256); function claimable_reward(address _user, address _reward_token) external view returns (uint256); function claimable_tokens(address _user) external returns (uint256); function user_checkpoint(address _user) external returns (bool); function commit_transfer_ownership(address) external; function claim_rewards(address) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; interface IMultiRewards { function balanceOf(address) external returns (uint256); function stakeFor(address, uint256) external; function withdrawFor(address, uint256) external; function notifyRewardAmount(address, uint256) external; function mintFor(address recipient, uint256 amount) external; function burnFrom(address _from, uint256 _amount) external; function stakeOf(address account) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; import "./SdtDistributorEvents.sol"; /// @title SdtDistributorV2 /// @notice Earn from Masterchef SDT and distribute it to gauges contract SdtDistributorV2 is ReentrancyGuardUpgradeable, AccessControlUpgradeable, SdtDistributorEvents { using SafeERC20 for IERC20; //////////////////////////////////////////////////////////////// /// --- CONSTANTS /////////////////////////////////////////////////////////////// /// @notice Accounting uint256 public constant BASE_UNIT = 10_000; /// @notice Address of the SDT token given as a reward. IERC20 public constant rewardToken = IERC20(0x73968b9a57c6E53d41345FD57a6E6ae27d6CDB2F); /// @notice Address of the masterchef. IMasterchef public constant masterchef = IMasterchef(0xfEA5E213bbD81A8a94D0E1eDB09dBD7CEab61e1c); /// @notice Role for governors only. bytes32 public constant GOVERNOR_ROLE = keccak256("GOVERNOR_ROLE"); /// @notice Role for the guardian bytes32 public constant GUARDIAN_ROLE = keccak256("GUARDIAN_ROLE"); //////////////////////////////////////////////////////////////// /// --- STORAGE SLOTS /////////////////////////////////////////////////////////////// /// @notice Time between SDT Harvest. uint256 public timePeriod; /// @notice Address of the token that will be deposited in masterchef. IERC20 public masterchefToken; /// @notice Address of the `GaugeController` contract. IGaugeController public controller; /// @notice Address responsible for pulling rewards of type >= 2 gauges and distributing it to the /// associated contracts if there is not already an address delegated for this specific contract. address public delegateGauge; /// @notice Whether SDT distribution through this contract is on or no. bool public distributionsOn; /// @notice Maps the address of a type >= 2 gauge to a delegate address responsible /// for giving rewards to the actual gauge. mapping(address => address) public delegateGauges; /// @notice Maps the address of a gauge to whether it was killed or not /// A gauge killed in this contract cannot receive any rewards. mapping(address => bool) public killedGauges; /// @notice Maps the address of a gauge delegate to whether this delegate supports the `notifyReward` interface /// and is therefore built for automation. mapping(address => bool) public isInterfaceKnown; /// @notice Masterchef PID uint256 public masterchefPID; /// @notice Timestamp of the last pull from masterchef. uint256 public lastMasterchefPull; /// @notice Maps the timestamp of pull action to the amount of SDT that pulled. mapping(uint256 => uint256) public pulls; // day => SDT amount /// @notice Maps the timestamp of last pull to the gauge addresses then keeps the data if particular gauge paid in the last pull. mapping(uint256 => mapping(address => bool)) public isGaugePaid; /// @notice Incentive for caller. uint256 public claimerFee; /// @notice Number of days to go through for past distributing. uint256 public lookPastDays; //////////////////////////////////////////////////////////////// /// --- INITIALIZATION LOGIC /////////////////////////////////////////////////////////////// /// @notice Initialize function /// @param _controller gauge controller to manage votes /// @param _governor governor address /// @param _guardian guardian address /// @param _delegateGauge delegate gauge address function initialize( address _controller, address _governor, address _guardian, address _delegateGauge ) external initializer { require(_controller != address(0) && _guardian != address(0) && _governor != address(0), "0"); controller = IGaugeController(_controller); delegateGauge = _delegateGauge; masterchefToken = IERC20(address(new MasterchefMasterToken())); distributionsOn = false; timePeriod = 3600 * 24; // One day in seconds lookPastDays = 45; // for past 45 days check _setRoleAdmin(GOVERNOR_ROLE, GOVERNOR_ROLE); _setRoleAdmin(GUARDIAN_ROLE, GOVERNOR_ROLE); _setupRole(GUARDIAN_ROLE, _guardian); _setupRole(GOVERNOR_ROLE, _governor); _setupRole(GUARDIAN_ROLE, _governor); } /// @custom:oz-upgrades-unsafe-allow constructor constructor() initializer {} /// @notice Initialize the masterchef depositing the master token /// @param _pid pool id to deposit the token function initializeMasterchef(uint256 _pid) external onlyRole(GOVERNOR_ROLE) { masterchefPID = _pid; masterchefToken.approve(address(masterchef), 1e18); masterchef.deposit(_pid, 1e18); } //////////////////////////////////////////////////////////////// /// --- DISTRIBUTION LOGIC /////////////////////////////////////////////////////////////// /// @notice Distribute SDT to Gauges /// @param gaugeAddr Address of the gauge to distribute. function distribute(address gaugeAddr) external nonReentrant { _distribute(gaugeAddr); } /// @notice Distribute SDT to Multiple Gauges /// @param gaugeAddr Array of addresses of the gauge to distribute. function distributeMulti(address[] calldata gaugeAddr) public nonReentrant { uint256 length = gaugeAddr.length; for (uint256 i; i < length; i++) { _distribute(gaugeAddr[i]); } } /// @notice Internal implementation of distribute logic. /// @param gaugeAddr Address of the gauge to distribute rewards to function _distribute(address gaugeAddr) internal { require(distributionsOn, "not allowed"); (bool success, bytes memory result) = address(controller).call( abi.encodeWithSignature("gauge_types(address)", gaugeAddr) ); if (!success || killedGauges[gaugeAddr]) { return; } int128 gaugeType = abi.decode(result, (int128)); // Rounded to beginning of the day -> 00:00 UTC uint256 roundedTimestamp = (block.timestamp / 1 days) * 1 days; uint256 totalDistribute; if (block.timestamp > lastMasterchefPull + timePeriod) { uint256 sdtBefore = rewardToken.balanceOf(address(this)); _pullSDT(); pulls[roundedTimestamp] = rewardToken.balanceOf(address(this)) - sdtBefore; lastMasterchefPull = roundedTimestamp; } // check past n days for (uint256 i; i < lookPastDays; i++) { uint256 currentTimestamp = roundedTimestamp - (i * 86_400); if (pulls[currentTimestamp] > 0) { bool isPaid = isGaugePaid[currentTimestamp][gaugeAddr]; if (isPaid) { break; } // Retrieve the amount pulled from Masterchef at the given timestamp. uint256 sdtBalance = pulls[currentTimestamp]; uint256 gaugeRelativeWeight; if (i == 0) { // Makes sure the weight is checkpointed. Also returns the weight. gaugeRelativeWeight = controller.gauge_relative_weight_write(gaugeAddr, currentTimestamp); } else { gaugeRelativeWeight = controller.gauge_relative_weight(gaugeAddr, currentTimestamp); } uint256 sdtDistributed = (sdtBalance * gaugeRelativeWeight) / 1e18; totalDistribute += sdtDistributed; isGaugePaid[currentTimestamp][gaugeAddr] = true; } } if (totalDistribute > 0) { if (gaugeType == 1) { rewardToken.safeTransfer(gaugeAddr, totalDistribute); IStakingRewards(gaugeAddr).notifyRewardAmount(totalDistribute); } else if (gaugeType >= 2) { // If it is defined, we use the specific delegate attached to the gauge address delegate = delegateGauges[gaugeAddr]; if (delegate == address(0)) { // If not, we check if a delegate common to all gauges with type >= 2 can be used delegate = delegateGauge; } if (delegate != address(0)) { // In the case where the gauge has a delegate (specific or not), then rewards are transferred to this gauge rewardToken.safeTransfer(delegate, totalDistribute); // If this delegate supports a specific interface, then rewards sent are notified through this // interface if (isInterfaceKnown[delegate]) { ISdtMiddlemanGauge(delegate).notifyReward(gaugeAddr, totalDistribute); } } else { rewardToken.safeTransfer(gaugeAddr, totalDistribute); } } else { ILiquidityGauge(gaugeAddr).deposit_reward_token(address(rewardToken), totalDistribute); } emit RewardDistributed(gaugeAddr, totalDistribute, lastMasterchefPull); } } /// @notice Internal function to pull SDT from the MasterChef function _pullSDT() internal { masterchef.withdraw(masterchefPID, 0); } //////////////////////////////////////////////////////////////// /// --- RESTRICTIVE FUNCTIONS /////////////////////////////////////////////////////////////// /// @notice Sets the distribution state (on/off) /// @param _state new distribution state function setDistribution(bool _state) external onlyRole(GOVERNOR_ROLE) { distributionsOn = _state; } /// @notice Sets a new gauge controller /// @param _controller Address of the new gauge controller function setGaugeController(address _controller) external onlyRole(GOVERNOR_ROLE) { require(_controller != address(0), "0"); controller = IGaugeController(_controller); emit GaugeControllerUpdated(_controller); } /// @notice Sets a new delegate gauge for pulling rewards of a type >= 2 gauges or of all type >= 2 gauges /// @param gaugeAddr Gauge to change the delegate of /// @param _delegateGauge Address of the new gauge delegate related to `gaugeAddr` /// @param toggleInterface Whether we should toggle the fact that the `_delegateGauge` is built for automation or not /// @dev This function can be used to remove delegating or introduce the pulling of rewards to a given address /// @dev If `gaugeAddr` is the zero address, this function updates the delegate gauge common to all gauges with type >= 2 /// @dev The `toggleInterface` parameter has been added for convenience to save one transaction when adding a gauge delegate /// which supports the `notifyReward` interface function setDelegateGauge( address gaugeAddr, address _delegateGauge, bool toggleInterface ) external onlyRole(GOVERNOR_ROLE) { if (gaugeAddr != address(0)) { delegateGauges[gaugeAddr] = _delegateGauge; } else { delegateGauge = _delegateGauge; } emit DelegateGaugeUpdated(gaugeAddr, _delegateGauge); if (toggleInterface) { _toggleInterfaceKnown(_delegateGauge); } } /// @notice Toggles the status of a gauge to either killed or unkilled /// @param gaugeAddr Gauge to toggle the status of /// @dev It is impossible to kill a gauge in the `GaugeController` contract, for this reason killing of gauges /// takes place in the `SdtDistributor` contract /// @dev This means that people could vote for a gauge in the gauge controller contract but that rewards are not going /// to be distributed to it in the end: people would need to remove their weights on the gauge killed to end the diminution /// in rewards /// @dev In the case of a gauge being killed, this function resets the timestamps at which this gauge has been approved and /// disapproves the gauge to spend the token /// @dev It should be cautiously called by governance as it could result in less SDT overall rewards than initially planned /// if people do not remove their voting weights to the killed gauge function toggleGauge(address gaugeAddr) external onlyRole(GOVERNOR_ROLE) { bool gaugeKilledMem = killedGauges[gaugeAddr]; if (!gaugeKilledMem) { rewardToken.safeApprove(gaugeAddr, 0); } killedGauges[gaugeAddr] = !gaugeKilledMem; emit GaugeToggled(gaugeAddr, !gaugeKilledMem); } /// @notice Notifies that the interface of a gauge delegate is known or has changed /// @param _delegateGauge Address of the gauge to change /// @dev Gauge delegates that are built for automation should be toggled function toggleInterfaceKnown(address _delegateGauge) external onlyRole(GUARDIAN_ROLE) { _toggleInterfaceKnown(_delegateGauge); } /// @notice Toggles the fact that a gauge delegate can be used for automation or not and therefore supports /// the `notifyReward` interface /// @param _delegateGauge Address of the gauge to change function _toggleInterfaceKnown(address _delegateGauge) internal { bool isInterfaceKnownMem = isInterfaceKnown[_delegateGauge]; isInterfaceKnown[_delegateGauge] = !isInterfaceKnownMem; emit InterfaceKnownToggled(_delegateGauge, !isInterfaceKnownMem); } /// @notice Gives max approvement to the gauge /// @param gaugeAddr Address of the gauge function approveGauge(address gaugeAddr) external onlyRole(GOVERNOR_ROLE) { rewardToken.safeApprove(gaugeAddr, type(uint256).max); } /// @notice Set the time period to pull SDT from Masterchef /// @param _timePeriod new timePeriod value in seconds function setTimePeriod(uint256 _timePeriod) external onlyRole(GOVERNOR_ROLE) { require(_timePeriod >= 1 days, "TOO_LOW"); timePeriod = _timePeriod; } function setClaimerFee(uint256 _newFee) external onlyRole(GOVERNOR_ROLE) { require(_newFee <= BASE_UNIT, "TOO_HIGH"); claimerFee = _newFee; } /// @notice Set the how many days we should look back for reward distribution /// @param _newLookPastDays new value for how many days we should look back function setLookPastDays(uint256 _newLookPastDays) external onlyRole(GOVERNOR_ROLE) { lookPastDays = _newLookPastDays; } /// @notice Withdraws ERC20 tokens that could accrue on this contract /// @param tokenAddress Address of the ERC20 token to withdraw /// @param to Address to transfer to /// @param amount Amount to transfer /// @dev Added to support recovering LP Rewards and other mistaken tokens /// from other systems to be distributed to holders /// @dev This function could also be used to recover SDT tokens in case the rate got smaller function recoverERC20( address tokenAddress, address to, uint256 amount ) external onlyRole(GOVERNOR_ROLE) { IERC20(tokenAddress).safeTransfer(to, amount); emit Recovered(tokenAddress, to, amount); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; interface ILocker { function createLock(uint256, uint256) external; function claimAllRewards(address[] calldata _tokens, address _recipient) external; function increaseAmount(uint256) external; function increaseUnlockTime(uint256) external; function release() external; function claimRewards(address,address) external; function claimFXSRewards(address) external; function execute( address, uint256, bytes calldata ) external returns (bool, bytes memory); function setGovernance(address) external; function voteGaugeWeight(address, uint256) external; function setAngleDepositor(address) external; function setFxsDepositor(address) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "../interfaces/ILocker.sol"; import "../interfaces/ILiquidityGauge.sol"; import { ISDTDistributor } from "../interfaces/ISDTDistributor.sol"; /// @title BaseAccumulator /// @notice A contract that defines the functions shared by all accumulators /// @author StakeDAO contract BaseAccumulator { using SafeERC20 for IERC20; /* ========== STATE VARIABLES ========== */ address public governance; address public locker; address public tokenReward; address public gauge; address public sdtDistributor; uint256 public claimerFee; /* ========== EVENTS ========== */ event SdtDistributorUpdated(address oldDistributor, address newDistributor); event GaugeSet(address oldGauge, address newGauge); event RewardNotified(address gauge, address tokenReward, uint256 amount); event LockerSet(address oldLocker, address newLocker); event GovernanceSet(address oldGov, address newGov); event TokenRewardSet(address oldTr, address newTr); event TokenDeposited(address token, uint256 amount); event ERC20Rescued(address token, uint256 amount); /* ========== CONSTRUCTOR ========== */ constructor(address _tokenReward, address _gauge) { tokenReward = _tokenReward; gauge = _gauge; governance = msg.sender; } /* ========== MUTATIVE FUNCTIONS ========== */ /// @notice Notify the reward using an extra token /// @param _tokenReward token address to notify /// @param _amount amount to notify function notifyExtraReward(address _tokenReward, uint256 _amount) external { require(msg.sender == governance, "!gov"); _notifyReward(_tokenReward, _amount); _distributeSDT(); } /// @notice Notify the reward using all balance of extra token /// @param _tokenReward token address to notify function notifyAllExtraReward(address _tokenReward) external { require(msg.sender == governance, "!gov"); uint256 amount = IERC20(_tokenReward).balanceOf(address(this)); _notifyReward(_tokenReward, amount); _distributeSDT(); } function notifyExtraReward(address[] calldata _tokens, uint256[] calldata amounts) external { require(msg.sender == governance, "!gov"); _notifyExtraReward(_tokens, amounts); _distributeSDT(); } function _notifyExtraReward(address[] memory _tokens, uint256[] memory amounts) internal { uint256 length = _tokens.length; for (uint256 i; i < length; ++i) { _notifyReward(_tokens[i], amounts[i]); } } function notifyAllExtraReward(address[] calldata _tokens) external { require(msg.sender == governance, "!gov"); _notifyAllExtraReward(_tokens); _distributeSDT(); } function _notifyAllExtraReward(address[] memory _tokens) internal { uint256 amount; uint256 length = _tokens.length; for (uint256 i; i < length; ++i) { amount = IERC20(_tokens[i]).balanceOf(address(this)); _notifyReward(_tokens[i], amount); } } function _distributeSDT() internal { if (sdtDistributor != address(0)) { ISDTDistributor(sdtDistributor).distribute(gauge); } } /// @notice Notify the new reward to the LGV4 /// @param _tokenReward token to notify /// @param _amount amount to notify function _notifyReward(address _tokenReward, uint256 _amount) internal { require(gauge != address(0), "gauge not set"); if (_amount == 0) { return; } uint256 balanceBefore = IERC20(_tokenReward).balanceOf(address(this)); require(balanceBefore >= _amount, "amount not enough"); if (ILiquidityGauge(gauge).reward_data(_tokenReward).distributor != address(0)) { uint256 claimerReward = (_amount * claimerFee) / 10000; IERC20(_tokenReward).transfer(msg.sender, claimerReward); _amount -= claimerReward; IERC20(_tokenReward).approve(gauge, _amount); ILiquidityGauge(gauge).deposit_reward_token(_tokenReward, _amount); uint256 balanceAfter = IERC20(_tokenReward).balanceOf(address(this)); require(balanceBefore - balanceAfter == _amount, "wrong amount notified"); emit RewardNotified(gauge, _tokenReward, _amount); } } /// @notice Deposit token into the accumulator /// @param _token token to deposit /// @param _amount amount to deposit function depositToken(address _token, uint256 _amount) external { require(_amount > 0, "set an amount > 0"); IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount); emit TokenDeposited(_token, _amount); } /// @notice Sets gauge for the accumulator which will receive and distribute the rewards /// @dev Can be called only by the governance /// @param _gauge gauge address function setGauge(address _gauge) external { require(msg.sender == governance, "!gov"); require(_gauge != address(0), "can't be zero address"); emit GaugeSet(gauge, _gauge); gauge = _gauge; } /// @notice Sets SdtDistributor to distribute from the Accumulator SDT Rewards to Gauge. /// @dev Can be called only by the governance /// @param _sdtDistributor gauge address function setSdtDistributor(address _sdtDistributor) external { require(msg.sender == governance, "!gov"); require(_sdtDistributor != address(0), "can't be zero address"); emit SdtDistributorUpdated(sdtDistributor, _sdtDistributor); sdtDistributor = _sdtDistributor; } /// @notice Allows the governance to set the new governance /// @dev Can be called only by the governance /// @param _governance governance address function setGovernance(address _governance) external { require(msg.sender == governance, "!gov"); require(_governance != address(0), "can't be zero address"); emit GovernanceSet(governance, _governance); governance = _governance; } /// @notice Allows the governance to set the locker /// @dev Can be called only by the governance /// @param _locker locker address function setLocker(address _locker) external { require(msg.sender == governance, "!gov"); require(_locker != address(0), "can't be zero address"); emit LockerSet(locker, _locker); locker = _locker; } /// @notice Allows the governance to set the token reward /// @dev Can be called only by the governance /// @param _tokenReward token reward address function setTokenReward(address _tokenReward) external { require(msg.sender == governance, "!gov"); require(_tokenReward != address(0), "can't be zero address"); emit TokenRewardSet(tokenReward, _tokenReward); tokenReward = _tokenReward; } function setClaimerFee(uint256 _claimerFee) external { require(msg.sender == governance, "!gov"); claimerFee = _claimerFee; } /// @notice A function that rescue any ERC20 token /// @param _token token address /// @param _amount amount to rescue /// @param _recipient address to send token rescued function rescueERC20( address _token, uint256 _amount, address _recipient ) external { require(msg.sender == governance, "!gov"); require(_amount > 0, "set an amount > 0"); require(_recipient != address(0), "can't be zero address"); IERC20(_token).safeTransfer(_recipient, _amount); emit ERC20Rescued(_token, _amount); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.7; interface ISDTDistributor { function distribute(address gaugeAddr) external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.7; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import "../interfaces/IGaugeController.sol"; import "../interfaces/ILiquidityGauge.sol"; import "../interfaces/ISdtMiddlemanGauge.sol"; import "../interfaces/IStakingRewards.sol"; import "../interfaces/IMasterchef.sol"; import "./MasterchefMasterToken.sol"; import "../external/AccessControlUpgradeable.sol"; /// @title SdtDistributorEvents /// @author StakeDAO Core Team /// @notice All the events used in `SdtDistributor` contract abstract contract SdtDistributorEvents { event DelegateGaugeUpdated(address indexed _gaugeAddr, address indexed _delegateGauge); event DistributionsToggled(bool _distributionsOn); event GaugeControllerUpdated(address indexed _controller); event GaugeToggled(address indexed gaugeAddr, bool newStatus); event InterfaceKnownToggled(address indexed _delegateGauge, bool _isInterfaceKnown); event RateUpdated(uint256 _newRate); event Recovered(address indexed tokenAddress, address indexed to, uint256 amount); event RewardDistributed(address indexed gaugeAddr, uint256 sdtDistributed, uint256 lastMasterchefPull); event UpdateMiningParameters(uint256 time, uint256 rate, uint256 supply); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @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 ReentrancyGuardUpgradeable is Initializable { // 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; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _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; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.7; interface IGaugeController { //solhint-disable-next-line function gauge_types(address addr) external view returns (int128); //solhint-disable-next-line function gauge_relative_weight_write(address addr, uint256 timestamp) external returns (uint256); //solhint-disable-next-line function gauge_relative_weight(address addr) external view returns (uint256); //solhint-disable-next-line function gauge_relative_weight(address addr, uint256 timestamp) external view returns (uint256); //solhint-disable-next-line function get_total_weight() external view returns (uint256); //solhint-disable-next-line function get_gauge_weight(address addr) external view returns (uint256); function vote_for_gauge_weights(address, uint256) external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.7; interface ISdtMiddlemanGauge { function notifyReward(address gauge, uint256 amount) external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.7; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; /// @title IStakingRewardsFunctions /// @author StakeDAO Core Team /// @notice Interface for the staking rewards contract that interact with the `RewardsDistributor` contract interface IStakingRewardsFunctions { function notifyRewardAmount(uint256 reward) external; function recoverERC20( address tokenAddress, address to, uint256 tokenAmount ) external; function setNewRewardsDistribution(address newRewardsDistribution) external; } /// @title IStakingRewards /// @author StakeDAO Core Team /// @notice Previous interface with additionnal getters for public variables interface IStakingRewards is IStakingRewardsFunctions { function rewardToken() external view returns (IERC20); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; interface IMasterchef { function deposit(uint256, uint256) external; function withdraw(uint256, uint256) external; function userInfo(uint256, address) external view returns (uint256, uint256); function poolInfo(uint256) external returns ( address, uint256, uint256, uint256 ); function totalAllocPoint() external view returns (uint256); function sdtPerBlock() external view returns (uint256); function pendingSdt(uint256, address) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.7; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; contract MasterchefMasterToken is ERC20, Ownable { constructor() ERC20("Masterchef Master Token", "MMT") { _mint(msg.sender, 1e18); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.7; import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; import "../interfaces/IAccessControl.sol"; /** * @dev This contract is fully forked from OpenZeppelin `AccessControlUpgradeable`. * The only difference is the removal of the ERC165 implementation as it's not * needed in Angle. * * 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 AccessControlUpgradeable is Initializable, IAccessControl { function __AccessControl_init() internal initializer { __AccessControl_init_unchained(); } function __AccessControl_init_unchained() internal initializer {} 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})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, msg.sender); _; } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/ */ function _checkRole(bytes32 role, address account) internal view { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", StringsUpgradeable.toHexString(uint160(account), 20), " is missing role ", StringsUpgradeable.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) external 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) external 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) external override { require(account == msg.sender, "71"); _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 { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal { emit RoleAdminChanged(role, getRoleAdmin(role), adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) internal { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, msg.sender); } } function _revokeRole(bytes32 role, address account) internal { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, msg.sender); } } uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [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 Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `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 {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.7; /// @title IAccessControl /// @author Forked from OpenZeppelin /// @notice Interface for `AccessControl` contracts 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; }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"contract ILocker","name":"_locker","type":"address"},{"internalType":"address","name":"_governance","type":"address"},{"internalType":"address","name":"_receiver","type":"address"},{"internalType":"contract BalancerAccumulator","name":"_accumulator","type":"address"},{"internalType":"address","name":"_veSDTFeeProxy","type":"address"},{"internalType":"address","name":"_sdtDistributor","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_gauge","type":"address"},{"indexed":false,"internalType":"address","name":"_token","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Claimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_gauge","type":"address"},{"indexed":false,"internalType":"address","name":"_token","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Deposited","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_gauge","type":"address"},{"indexed":false,"internalType":"address","name":"_token","type":"address"}],"name":"GaugeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_gauge","type":"address"},{"indexed":false,"internalType":"address","name":"_receiver","type":"address"}],"name":"RewardReceiverSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_vault","type":"address"},{"indexed":false,"internalType":"bool","name":"_newState","type":"bool"}],"name":"VaultToggled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_gauge","type":"address"},{"indexed":false,"internalType":"address","name":"_token","type":"address"},{"indexed":false,"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[],"name":"BAL","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BAL_MINTER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BASE_FEE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"accumulator","outputs":[{"internalType":"contract BalancerAccumulator","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"accumulatorFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"claimerRewardFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"execute","outputs":[{"internalType":"bool","name":"","type":"bool"},{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"gauges","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"governance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"locker","outputs":[{"internalType":"contract ILocker","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum BalancerStrategy.MANAGEFEE","name":"_manageFee","type":"uint8"},{"internalType":"address","name":"_gauge","type":"address"},{"internalType":"uint256","name":"_newFee","type":"uint256"}],"name":"manageFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"multiGauges","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"perfFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardsReceiver","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sdtDistributor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"sendToAccumulator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newAccumulator","type":"address"}],"name":"setAccumulator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_gauge","type":"address"}],"name":"setGauge","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newGovernance","type":"address"}],"name":"setGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_gauge","type":"address"},{"internalType":"address","name":"_multiGauge","type":"address"}],"name":"setMultiGauge","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newRewardsReceiver","type":"address"}],"name":"setRewardsReceiver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newVaultGaugeFactory","type":"address"}],"name":"setVaultGaugeFactory","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newVeSDTProxy","type":"address"}],"name":"setVeSDTProxy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"name":"toggleVault","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vaultGaugeFactory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"vaults","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"veSDTFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"veSDTFeeProxy","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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52601160045260246000fd5b634e487b7160e01b600052602160045260246000fd5b634e487b7160e01b600052604160045260246000fd5b6001600160a01b038116811461275b57600080fd5b5056fea26469706673582212202d52f486c98f0ac0136c88181112e813ffd5e4d59eb30ac879969a6178e609d764736f6c63430008070033
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000ea79d1a83da6db43a85942767c389fe0acf336a50000000000000000000000000de5199779b43e13b3bec21e91117e18736bc1a8000000000000000000000000f930ebbd05ef8b25b1797b9b2109ddc9b0d430630000000000000000000000009a211c972aebf2ae70f1ec14845848baab79d6af000000000000000000000000f94492a9efee2a6a82256e5794c988d3a711539d0000000000000000000000009c99dffc1de1aff7e7c1f36fcdd49063a281e18c
-----Decoded View---------------
Arg [0] : _locker (address): 0xea79d1A83Da6DB43a85942767C389fE0ACf336A5
Arg [1] : _governance (address): 0x0dE5199779b43E13B3Bec21e91117E18736BC1A8
Arg [2] : _receiver (address): 0xF930EBBd05eF8b25B1797b9b2109DDC9B0d43063
Arg [3] : _accumulator (address): 0x9A211c972AebF2aE70F1ec14845848baAB79d6Af
Arg [4] : _veSDTFeeProxy (address): 0xF94492a9efEE2A6A82256e5794C988D3A711539d
Arg [5] : _sdtDistributor (address): 0x9C99dffC1De1AfF7E7C1F36fCdD49063A281e18C
-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000ea79d1a83da6db43a85942767c389fe0acf336a5
Arg [1] : 0000000000000000000000000de5199779b43e13b3bec21e91117e18736bc1a8
Arg [2] : 000000000000000000000000f930ebbd05ef8b25b1797b9b2109ddc9b0d43063
Arg [3] : 0000000000000000000000009a211c972aebf2ae70f1ec14845848baab79d6af
Arg [4] : 000000000000000000000000f94492a9efee2a6a82256e5794c988d3a711539d
Arg [5] : 0000000000000000000000009c99dffc1de1aff7e7c1f36fcdd49063a281e18c
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Multichain Portfolio | 26 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.