ERC-20
Overview
Max Total Supply
22,652,942.813619565844004599 SP
Holders
552
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
214.665181926820909135 SPValue
$0.00Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0xeD115D58...eC08702Ad The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
DelegatedShare
Compiler Version
v0.8.17+commit.8df45f5f
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "@1inch/erc20-pods/contracts/ERC20Pods.sol"; import "./interfaces/IDelegatedShare.sol"; contract DelegatedShare is IDelegatedShare, ERC20Pods { error ApproveDisabled(); error TransferDisabled(); error NotOwner(); address immutable private _owner; modifier onlyOwner { if (msg.sender != _owner) revert NotOwner(); _; } constructor( string memory name, string memory symbol, uint256 maxUserPods, uint256 podCallGasLimit ) ERC20(name, symbol) ERC20Pods(maxUserPods, podCallGasLimit) { _owner = msg.sender; } function addDefaultFarmIfNeeded(address account, address farm) external onlyOwner { if (!hasPod(account, farm)) { _addPod(account, farm); } } function mint(address account, uint256 amount) external onlyOwner { _mint(account, amount); } function burn(address account, uint256 amount) external onlyOwner { _burn(account, amount); } function approve(address /* spender */, uint256 /* amount */) public pure override(ERC20, IERC20) returns (bool) { revert ApproveDisabled(); } function transfer(address /* to */, uint256 /* amount */) public pure override(IERC20, ERC20) returns (bool) { revert TransferDisabled(); } function transferFrom(address /* from */, address /* to */, uint256 /* amount */) public pure override(IERC20, ERC20) returns (bool) { revert TransferDisabled(); } function increaseAllowance(address /* spender */, uint256 /* addedValue */) public pure override returns (bool) { revert ApproveDisabled(); } function decreaseAllowance(address /* spender */, uint256 /* subtractedValue */) public pure override returns (bool) { revert ApproveDisabled(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@1inch/solidity-utils/contracts/libraries/AddressSet.sol"; import "./interfaces/IERC20Pods.sol"; import "./interfaces/IPod.sol"; import "./libs/ReentrancyGuard.sol"; abstract contract ERC20Pods is ERC20, IERC20Pods, ReentrancyGuardExt { using AddressSet for AddressSet.Data; using AddressArray for AddressArray.Data; using ReentrancyGuardLib for ReentrancyGuardLib.Data; error PodAlreadyAdded(); error PodNotFound(); error InvalidPodAddress(); error PodsLimitReachedForAccount(); error InsufficientGas(); error ZeroPodsLimit(); uint256 public immutable podsLimit; uint256 public immutable podCallGasLimit; ReentrancyGuardLib.Data private _guard; mapping(address => AddressSet.Data) private _pods; constructor(uint256 podsLimit_, uint256 podCallGasLimit_) { if (podsLimit_ == 0) revert ZeroPodsLimit(); podsLimit = podsLimit_; podCallGasLimit = podCallGasLimit_; _guard.init(); } function hasPod(address account, address pod) public view virtual returns(bool) { return _pods[account].contains(pod); } function podsCount(address account) public view virtual returns(uint256) { return _pods[account].length(); } function podAt(address account, uint256 index) public view virtual returns(address) { return _pods[account].at(index); } function pods(address account) public view virtual returns(address[] memory) { return _pods[account].items.get(); } function balanceOf(address account) public nonReentrantView(_guard) view override(IERC20, ERC20) virtual returns(uint256) { return super.balanceOf(account); } function podBalanceOf(address pod, address account) public nonReentrantView(_guard) view virtual returns(uint256) { if (hasPod(account, pod)) { return super.balanceOf(account); } return 0; } function addPod(address pod) public virtual { _addPod(msg.sender, pod); } function removePod(address pod) public virtual { _removePod(msg.sender, pod); } function removeAllPods() public virtual { _removeAllPods(msg.sender); } function _addPod(address account, address pod) internal virtual { if (pod == address(0)) revert InvalidPodAddress(); if (!_pods[account].add(pod)) revert PodAlreadyAdded(); if (_pods[account].length() > podsLimit) revert PodsLimitReachedForAccount(); emit PodAdded(account, pod); uint256 balance = balanceOf(account); if (balance > 0) { _updateBalances(pod, address(0), account, balance); } } function _removePod(address account, address pod) internal virtual { if (!_pods[account].remove(pod)) revert PodNotFound(); emit PodRemoved(account, pod); uint256 balance = balanceOf(account); if (balance > 0) { _updateBalances(pod, account, address(0), balance); } } function _removeAllPods(address account) internal virtual { address[] memory items = _pods[account].items.get(); uint256 balance = balanceOf(account); unchecked { for (uint256 i = items.length; i > 0; i--) { _pods[account].remove(items[i - 1]); emit PodRemoved(account, items[i - 1]); if (balance > 0) { _updateBalances(items[i - 1], account, address(0), balance); } } } } /// @notice Assembly implementation of the gas limited call to avoid return gas bomb, // moreover call to a destructed pod would also revert even inside try-catch block in Solidity 0.8.17 /// @dev try IPod(pod).updateBalances{gas: _POD_CALL_GAS_LIMIT}(from, to, amount) {} catch {} function _updateBalances(address pod, address from, address to, uint256 amount) private { bytes4 selector = IPod.updateBalances.selector; bytes4 exception = InsufficientGas.selector; uint256 gasLimit = podCallGasLimit; assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), from) mstore(add(ptr, 0x24), to) mstore(add(ptr, 0x44), amount) if lt(div(mul(gas(), 63), 64), gasLimit) { mstore(0, exception) revert(0, 4) } pop(call(gasLimit, pod, 0, ptr, 0x64, 0, 0)) } } // ERC20 Overrides function _afterTokenTransfer(address from, address to, uint256 amount) internal nonReentrant(_guard) override virtual { super._afterTokenTransfer(from, to, amount); unchecked { if (amount > 0 && from != to) { address[] memory a = _pods[from].items.get(); address[] memory b = _pods[to].items.get(); uint256 aLength = a.length; uint256 bLength = b.length; for (uint256 i = 0; i < aLength; i++) { address pod = a[i]; uint256 j; for (j = 0; j < bLength; j++) { if (pod == b[j]) { // Both parties are participating of the same Pod _updateBalances(pod, from, to, amount); b[j] = address(0); break; } } if (j == bLength) { // Sender is participating in a Pod, but receiver is not _updateBalances(pod, from, address(0), amount); } } for (uint256 j = 0; j < bLength; j++) { address pod = b[j]; if (pod != address(0)) { // Receiver is participating in a Pod, but sender is not _updateBalances(pod, address(0), to, amount); } } } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IERC20Pods is IERC20 { event PodAdded(address account, address pod); event PodRemoved(address account, address pod); function hasPod(address account, address pod) external view returns(bool); function podsCount(address account) external view returns(uint256); function podAt(address account, uint256 index) external view returns(address); function pods(address account) external view returns(address[] memory); function podBalanceOf(address pod, address account) external view returns(uint256); function addPod(address pod) external; function removePod(address pod) external; function removeAllPods() external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IPod { function updateBalances(address from, address to, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library ReentrancyGuardLib { error ReentrantCall(); uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; struct Data { uint256 _status; } function init(Data storage self) internal { self._status = _NOT_ENTERED; } function enter(Data storage self) internal { if (self._status == _ENTERED) revert ReentrantCall(); self._status = _ENTERED; } function exit(Data storage self) internal { self._status = _NOT_ENTERED; } function check(Data storage self) internal view returns (bool) { return self._status == _ENTERED; } } contract ReentrancyGuardExt { using ReentrancyGuardLib for ReentrancyGuardLib.Data; modifier nonReentrant(ReentrancyGuardLib.Data storage self) { self.enter(); _; self.exit(); } modifier nonReentrantView(ReentrancyGuardLib.Data storage self) { if (self.check()) revert ReentrancyGuardLib.ReentrantCall(); _; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC20Pods.sol"; contract ERC20PodsMock is ERC20Pods { constructor(string memory name, string memory symbol, uint256 podsLimit, uint256 podCallGasLimit) ERC20(name, symbol) ERC20Pods(podsLimit, podCallGasLimit) {} // solhint-disable-line no-empty-blocks function mint(address account, uint256 amount) external { _mint(account, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./interfaces/IPod.sol"; import "./interfaces/IERC20Pods.sol"; abstract contract Pod is IPod { error AccessDenied(); IERC20Pods public immutable token; modifier onlyToken { if (msg.sender != address(token)) revert AccessDenied(); _; } constructor(IERC20Pods token_) { token = token_; } function updateBalances(address from, address to, uint256 amount) external onlyToken { _updateBalances(from, to, amount); } function _updateBalances(address from, address to, uint256 amount) internal virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/math/Math.sol"; library FarmAccounting { error ZeroDuration(); error DurationTooLarge(); error AmountTooLarge(); struct Info { uint40 finished; uint32 duration; uint184 reward; } uint256 internal constant _MAX_REWARD_AMOUNT = 1e32; // 108 bits uint256 internal constant _SCALE = 1e18; // 60 bits /// @dev Requires extra 18 decimals for precision, result fits in 168 bits function farmedSinceCheckpointScaled(Info memory info, uint256 checkpoint) internal view returns(uint256 amount) { unchecked { if (info.duration > 0) { uint256 elapsed = Math.min(block.timestamp, info.finished) - Math.min(checkpoint, info.finished); // size of (type(uint32).max * _MAX_REWARD_AMOUNT * _SCALE) is less than 200 bits, so there is no overflow return elapsed * info.reward * _SCALE / info.duration; } } } function startFarming(Info storage info, uint256 amount, uint256 period) internal returns(uint256) { if (period == 0) revert ZeroDuration(); if (period > type(uint32).max) revert DurationTooLarge(); if (amount > _MAX_REWARD_AMOUNT) revert AmountTooLarge(); // If something left from prev farming add it to the new farming Info memory prev = info; if (block.timestamp < prev.finished) { amount += prev.reward - farmedSinceCheckpointScaled(prev, prev.finished - prev.duration) / _SCALE; } (info.finished, info.duration, info.reward) = (uint40(block.timestamp + period), uint32(period), uint184(amount)); return amount; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./FarmAccounting.sol"; library UserAccounting { struct Info { uint40 checkpoint; uint216 farmedPerTokenStored; mapping(address => int256) corrections; } function farmedPerToken( Info storage info, bytes32 context, function(bytes32) internal view returns(uint256) lazyGetSupply, function(bytes32, uint256) internal view returns(uint256) lazyGetFarmed ) internal view returns(uint256) { (uint256 checkpoint, uint256 fpt) = (info.checkpoint, info.farmedPerTokenStored); if (block.timestamp != checkpoint) { uint256 supply = lazyGetSupply(context); if (supply > 0) { // fpt increases by 168 bit / supply unchecked { fpt += lazyGetFarmed(context, checkpoint) / supply; } } } return fpt; } function farmed(Info storage info, address account, uint256 balance, uint256 fpt) internal view returns(uint256) { // balance * fpt is less than 168 bit return uint256(int256(balance * fpt) - info.corrections[account]) / FarmAccounting._SCALE; } function eraseFarmed(Info storage info, address account, uint256 balance, uint256 fpt) internal { // balance * fpt is less than 168 bit info.corrections[account] = int256(balance * fpt); } function updateFarmedPerToken(Info storage info, uint256 fpt) internal { (info.checkpoint, info.farmedPerTokenStored) = (uint40(block.timestamp), uint216(fpt)); } function updateBalances(Info storage info, address from, address to, uint256 amount, uint256 fpt) internal { bool fromZero = (from == address(0)); bool toZero = (to == address(0)); if (amount > 0 && from != to) { if (fromZero || toZero) { updateFarmedPerToken(info, fpt); } // fpt is less than 168 bit, so amount should be less 98 bit int256 diff = int256(amount * fpt); if (!fromZero) { info.corrections[from] -= diff; } if (!toZero) { info.corrections[to] += diff; } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./accounting/FarmAccounting.sol"; import "./accounting/UserAccounting.sol"; library FarmingLib { using FarmAccounting for FarmAccounting.Info; using UserAccounting for UserAccounting.Info; using FarmingLib for FarmingLib.Info; struct Data { FarmAccounting.Info farmInfo; UserAccounting.Info userInfo; } struct Info { function() internal view returns(uint256) getTotalSupply; bytes32 dataSlot; } function makeInfo(function() internal view returns(uint256) getTotalSupply, Data storage data) internal pure returns(Info memory info) { info.getTotalSupply = getTotalSupply; bytes32 dataSlot; assembly { // solhint-disable-line no-inline-assembly dataSlot := data.slot } info.dataSlot = dataSlot; } function getData(Info memory self) internal pure returns(Data storage data) { bytes32 dataSlot = self.dataSlot; assembly { // solhint-disable-line no-inline-assembly data.slot := dataSlot } } function startFarming(Info memory self, uint256 amount, uint256 period) internal returns(uint256 reward) { Data storage data = self.getData(); data.userInfo.updateFarmedPerToken(_farmedPerToken(self)); reward = data.farmInfo.startFarming(amount, period); } function farmed(Info memory self, address account, uint256 balance) internal view returns(uint256) { return self.getData().userInfo.farmed(account, balance, _farmedPerToken(self)); } function claim(Info memory self, address account, uint256 balance) internal returns(uint256 amount) { Data storage data = self.getData(); uint256 fpt = _farmedPerToken(self); amount = data.userInfo.farmed(account, balance, fpt); if (amount > 0) { data.userInfo.eraseFarmed(account, balance, fpt); } } function updateBalances(Info memory self, address from, address to, uint256 amount) internal { self.getData().userInfo.updateBalances(from, to, amount, _farmedPerToken(self)); } function _farmedPerToken(Info memory self) private view returns (uint256) { return self.getData().userInfo.farmedPerToken(_infoToContext(self), _lazyGetSupply, _lazyGetFarmed); } // UserAccounting bindings function _lazyGetSupply(bytes32 context) private view returns(uint256) { Info memory self = _contextToInfo(context); return self.getTotalSupply(); } function _lazyGetFarmed(bytes32 context, uint256 checkpoint) private view returns(uint256) { Info memory self = _contextToInfo(context); return self.getData().farmInfo.farmedSinceCheckpointScaled(checkpoint); } function _contextToInfo(bytes32 context) private pure returns(Info memory self) { assembly { // solhint-disable-line no-inline-assembly self := context } } function _infoToContext(Info memory self) private pure returns(bytes32 context) { assembly { // solhint-disable-line no-inline-assembly context := self } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@1inch/erc20-pods/contracts/interfaces/IPod.sol"; import "../accounting/FarmAccounting.sol"; interface IMultiFarmingPod is IPod { event FarmCreated(address token, address reward); event DistributorChanged(address oldDistributor, address newDistributor); event RewardAdded(address token, uint256 reward, uint256 duration); // View functions function totalSupply() external view returns(uint256); function distributor() external view returns(address); function farmInfo(IERC20 rewardsToken) external view returns(FarmAccounting.Info memory); function farmed(IERC20 rewardsToken, address account) external view returns(uint256); // User functions function claim(IERC20 rewardsToken) external; function claim() external; // Owner functions function setDistributor(address distributor_) external; // Distributor functions function startFarming(IERC20 rewardsToken, uint256 amount, uint256 period) external; function rescueFunds(IERC20 token, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@1inch/erc20-pods/contracts/Pod.sol"; import "@1inch/solidity-utils/contracts/libraries/SafeERC20.sol"; import "@1inch/solidity-utils/contracts/libraries/AddressSet.sol"; import "@1inch/erc20-pods/contracts/interfaces/IERC20Pods.sol"; import "./interfaces/IMultiFarmingPod.sol"; import "./FarmingLib.sol"; contract MultiFarmingPod is Pod, IMultiFarmingPod, Ownable { using SafeERC20 for IERC20; using FarmingLib for FarmingLib.Info; using Address for address payable; using AddressSet for AddressSet.Data; using AddressArray for AddressArray.Data; error ZeroFarmableTokenAddress(); error ZeroRewardsTokenAddress(); error SameDistributor(); error RewardsTokenAlreadyAdded(); error RewardsTokensLimitTooHigh(uint256); error RewardsTokensLimitReached(); error RewardsTokenNotFound(); uint256 public immutable rewardsTokensLimit; address private _distributor; uint256 private _totalSupply; mapping(IERC20 => FarmingLib.Data) private _farms; AddressSet.Data private _rewardsTokens; modifier onlyDistributor { if (msg.sender != _distributor) revert AccessDenied(); _; } constructor(IERC20Pods farmableToken_, uint256 rewardsTokensLimit_) Pod(farmableToken_) { if (rewardsTokensLimit_ > 5) revert RewardsTokensLimitTooHigh(rewardsTokensLimit_); if (address(farmableToken_) == address(0)) revert ZeroFarmableTokenAddress(); rewardsTokensLimit = rewardsTokensLimit_; } function rewardsTokens() external view returns(address[] memory) { return _rewardsTokens.items.get(); } function farmInfo(IERC20 rewardsToken) public view returns(FarmAccounting.Info memory) { return _farms[rewardsToken].farmInfo; } function totalSupply() public view returns(uint256) { return _totalSupply; } function distributor() public view returns(address) { return _distributor; } function setDistributor(address distributor_) public virtual onlyOwner { address oldDistributor = _distributor; if (distributor_ == oldDistributor) revert SameDistributor(); emit DistributorChanged(oldDistributor, distributor_); _distributor = distributor_; } function addRewardsToken(address rewardsToken) public virtual onlyOwner { if (_rewardsTokens.length() == rewardsTokensLimit) revert RewardsTokensLimitReached(); if (!_rewardsTokens.add(rewardsToken)) revert RewardsTokenAlreadyAdded(); emit FarmCreated(address(token), rewardsToken); } function startFarming(IERC20 rewardsToken, uint256 amount, uint256 period) public virtual onlyDistributor { if (!_rewardsTokens.contains(address(rewardsToken))) revert RewardsTokenNotFound(); uint256 reward = _makeInfo(rewardsToken).startFarming(amount, period); emit RewardAdded(address(rewardsToken), reward, period); rewardsToken.safeTransferFrom(msg.sender, address(this), amount); } function farmed(IERC20 rewardsToken, address account) public view virtual returns(uint256) { uint256 balance = IERC20Pods(token).podBalanceOf(address(this), account); return _makeInfo(rewardsToken).farmed(account, balance); } function claim(IERC20 rewardsToken) public virtual { uint256 podBalance = IERC20Pods(token).podBalanceOf(address(this), msg.sender); _claim(rewardsToken, msg.sender, podBalance); } function claim() public virtual { uint256 podBalance = IERC20Pods(token).podBalanceOf(address(this), msg.sender); address[] memory tokens = _rewardsTokens.items.get(); unchecked { for (uint256 i = 0; i < tokens.length; i++) { _claim(IERC20(tokens[i]), msg.sender, podBalance); } } } function _claim(IERC20 rewardsToken, address account, uint256 podBalance) private { uint256 amount = _makeInfo(rewardsToken).claim(account, podBalance); if (amount > 0) { _transferReward(rewardsToken, account, amount); } } function _transferReward(IERC20 reward, address to, uint256 amount) internal virtual { reward.safeTransfer(to, amount); } function _updateBalances(address from, address to, uint256 amount) internal virtual override { address[] memory tokens = _rewardsTokens.items.get(); unchecked { for (uint256 i = 0; i < tokens.length; i++) { _makeInfo(IERC20(tokens[i])).updateBalances(from, to, amount); } } if (from == address(0)) { _totalSupply += amount; } if (to == address(0)) { _totalSupply -= amount; } } function rescueFunds(IERC20 token, uint256 amount) public virtual onlyDistributor { if(token == IERC20(address(0))) { payable(_distributor).sendValue(amount); } else { token.safeTransfer(_distributor, amount); } } function _makeInfo(IERC20 rewardsToken) private view returns(FarmingLib.Info memory) { return FarmingLib.makeInfo(totalSupply, _farms[rewardsToken]); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; pragma abicoder v1; interface IDaiLikePermit { function permit( address holder, address spender, uint256 nonce, uint256 expiry, bool allowed, uint8 v, bytes32 r, bytes32 s ) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; pragma abicoder v1; /// @title Library that implements address array on mapping, stores array length at 0 index. library AddressArray { error IndexOutOfBounds(); error PopFromEmptyArray(); error OutputArrayTooSmall(); /// @dev Data struct containing raw mapping. struct Data { mapping(uint256 => uint256) _raw; } /// @dev Length of array. function length(Data storage self) internal view returns (uint256) { return self._raw[0] >> 160; } /// @dev Returns data item from `self` storage at `i`. function at(Data storage self, uint256 i) internal view returns (address) { return address(uint160(self._raw[i])); } /// @dev Returns list of addresses from storage `self`. function get(Data storage self) internal view returns (address[] memory arr) { uint256 lengthAndFirst = self._raw[0]; arr = new address[](lengthAndFirst >> 160); _get(self, arr, lengthAndFirst); } /// @dev Puts list of addresses from `self` storage into `output` array. function get(Data storage self, address[] memory output) internal view returns (address[] memory) { return _get(self, output, self._raw[0]); } function _get( Data storage self, address[] memory output, uint256 lengthAndFirst ) private view returns (address[] memory) { uint256 len = lengthAndFirst >> 160; if (len > output.length) revert OutputArrayTooSmall(); if (len > 0) { output[0] = address(uint160(lengthAndFirst)); unchecked { for (uint256 i = 1; i < len; i++) { output[i] = address(uint160(self._raw[i])); } } } return output; } /// @dev Array push back `account` operation on storage `self`. function push(Data storage self, address account) internal returns (uint256) { unchecked { uint256 lengthAndFirst = self._raw[0]; uint256 len = lengthAndFirst >> 160; if (len == 0) { self._raw[0] = (1 << 160) + uint160(account); } else { self._raw[0] = lengthAndFirst + (1 << 160); self._raw[len] = uint160(account); } return len + 1; } } /// @dev Array pop back operation for storage `self`. function pop(Data storage self) internal { unchecked { uint256 lengthAndFirst = self._raw[0]; uint256 len = lengthAndFirst >> 160; if (len == 0) revert PopFromEmptyArray(); self._raw[len - 1] = 0; if (len > 1) { self._raw[0] = lengthAndFirst - (1 << 160); } } } /// @dev Set element for storage `self` at `index` to `account`. function set( Data storage self, uint256 index, address account ) internal { uint256 len = length(self); if (index >= len) revert IndexOutOfBounds(); if (index == 0) { self._raw[0] = (len << 160) | uint160(account); } else { self._raw[index] = uint160(account); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; pragma abicoder v1; import "./AddressArray.sol"; /** @title Library that is using AddressArray library for AddressArray.Data * and allows Set operations on address storage data: * 1. add * 2. remove * 3. contains */ library AddressSet { using AddressArray for AddressArray.Data; /** @dev Data struct from AddressArray.Data items * and lookup mapping address => index in data array. */ struct Data { AddressArray.Data items; mapping(address => uint256) lookup; } /// @dev Length of data storage. function length(Data storage s) internal view returns (uint256) { return s.items.length(); } /// @dev Returns data item from `s` storage at `index`. function at(Data storage s, uint256 index) internal view returns (address) { return s.items.at(index); } /// @dev Returns true if storage `s` has `item`. function contains(Data storage s, address item) internal view returns (bool) { return s.lookup[item] != 0; } /// @dev Adds `item` into storage `s` and returns true if successful. function add(Data storage s, address item) internal returns (bool) { if (s.lookup[item] > 0) { return false; } s.lookup[item] = s.items.push(item); return true; } /// @dev Removes `item` from storage `s` and returns true if successful. function remove(Data storage s, address item) internal returns (bool) { uint256 index = s.lookup[item]; if (index == 0) { return false; } if (index < s.items.length()) { unchecked { address lastItem = s.items.at(s.items.length() - 1); s.items.set(index - 1, lastItem); s.lookup[lastItem] = index; } } s.items.pop(); delete s.lookup[item]; return true; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; pragma abicoder v1; /// @title Revert reason forwarder. library RevertReasonForwarder { /// @dev Forwards latest externall call revert. function reRevert() internal pure { // bubble up revert reason from latest external call /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; pragma abicoder v1; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol"; import "../interfaces/IDaiLikePermit.sol"; import "../libraries/RevertReasonForwarder.sol"; /// @title Implements efficient safe methods for ERC20 interface. library SafeERC20 { error SafeTransferFailed(); error SafeTransferFromFailed(); error ForceApproveFailed(); error SafeIncreaseAllowanceFailed(); error SafeDecreaseAllowanceFailed(); error SafePermitBadLength(); /// @dev Ensures method do not revert or return boolean `true`, admits call to non-smart-contract. function safeTransferFrom( IERC20 token, address from, address to, uint256 amount ) internal { bytes4 selector = token.transferFrom.selector; bool success; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let data := mload(0x40) mstore(data, selector) mstore(add(data, 0x04), from) mstore(add(data, 0x24), to) mstore(add(data, 0x44), amount) success := call(gas(), token, 0, data, 100, 0x0, 0x20) if success { switch returndatasize() case 0 { success := gt(extcodesize(token), 0) } default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) } } } if (!success) revert SafeTransferFromFailed(); } /// @dev Ensures method do not revert or return boolean `true`, admits call to non-smart-contract. function safeTransfer( IERC20 token, address to, uint256 value ) internal { if (!_makeCall(token, token.transfer.selector, to, value)) { revert SafeTransferFailed(); } } /// @dev If `approve(from, to, amount)` fails, try to `approve(from, to, 0)` before retry. function forceApprove( IERC20 token, address spender, uint256 value ) internal { if (!_makeCall(token, token.approve.selector, spender, value)) { if ( !_makeCall(token, token.approve.selector, spender, 0) || !_makeCall(token, token.approve.selector, spender, value) ) { revert ForceApproveFailed(); } } } /// @dev Allowance increase with safe math check. function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 allowance = token.allowance(address(this), spender); if (value > type(uint256).max - allowance) revert SafeIncreaseAllowanceFailed(); forceApprove(token, spender, allowance + value); } /// @dev Allowance decrease with safe math check. function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 allowance = token.allowance(address(this), spender); if (value > allowance) revert SafeDecreaseAllowanceFailed(); forceApprove(token, spender, allowance - value); } /// @dev Calls either ERC20 or Dai `permit` for `token`, if unsuccessful forwards revert from external call. function safePermit(IERC20 token, bytes calldata permit) internal { if (!tryPermit(token, permit)) RevertReasonForwarder.reRevert(); } function tryPermit(IERC20 token, bytes calldata permit) internal returns(bool) { if (permit.length == 32 * 7) { return _makeCalldataCall(token, IERC20Permit.permit.selector, permit); } if (permit.length == 32 * 8) { return _makeCalldataCall(token, IDaiLikePermit.permit.selector, permit); } revert SafePermitBadLength(); } function _makeCall( IERC20 token, bytes4 selector, address to, uint256 amount ) private returns (bool success) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let data := mload(0x40) mstore(data, selector) mstore(add(data, 0x04), to) mstore(add(data, 0x24), amount) success := call(gas(), token, 0, data, 0x44, 0x0, 0x20) if success { switch returndatasize() case 0 { success := gt(extcodesize(token), 0) } default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) } } } } function _makeCalldataCall( IERC20 token, bytes4 selector, bytes calldata args ) private returns (bool success) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let len := add(4, args.length) let data := mload(0x40) mstore(data, selector) calldatacopy(add(data, 0x04), args.offset, args.length) success := call(gas(), token, 0, data, len, 0x0, 0x20) if success { switch returndatasize() case 0 { success := gt(extcodesize(token), 0) } default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) } } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (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.openzeppelin.com/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, allowance(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 = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * 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; // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by // decrementing then incrementing. _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; unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _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; // Overflow not possible: amount <= accountBalance <= totalSupply. _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 Updates `owner` s allowance for `spender` based on spent `amount`. * * 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 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// 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 (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (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 functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or 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 { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/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 (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@1inch/erc20-pods/contracts/interfaces/IERC20Pods.sol"; import "@1inch/erc20-pods/contracts/Pod.sol"; import "./interfaces/IDelegationPod.sol"; contract DelegationPod is IDelegationPod, Pod, ERC20 { error ApproveDisabled(); error TransferDisabled(); mapping(address => address) public delegated; constructor(string memory name_, string memory symbol_, IERC20Pods token_) ERC20(name_, symbol_) Pod(token_) {} // solhint-disable-line no-empty-blocks function delegate(address delegatee) public virtual { address prevDelegatee = delegated[msg.sender]; if (prevDelegatee != delegatee) { delegated[msg.sender] = delegatee; emit Delegated(msg.sender, delegatee); uint256 balance = IERC20Pods(token).podBalanceOf(address(this), msg.sender); if (balance > 0) { _updateBalances(msg.sender, msg.sender, prevDelegatee, delegatee, balance); } } } function _updateBalances(address from, address to, uint256 amount) internal override { _updateBalances( from, to, from == address(0) ? address(0) : delegated[from], to == address(0) ? address(0) : delegated[to], amount ); } function _updateBalances(address /* from */, address /* to */, address fromDelegatee, address toDelegatee, uint256 amount) internal virtual { if (fromDelegatee != toDelegatee && amount > 0) { if (fromDelegatee == address(0)) { _mint(toDelegatee, amount); } else if (toDelegatee == address(0)) { _burn(fromDelegatee, amount); } else { _transfer(fromDelegatee, toDelegatee, amount); } } } // ERC20 overrides function transfer(address /* to */, uint256 /* amount */) public pure override(IERC20, ERC20) returns (bool) { revert TransferDisabled(); } function transferFrom(address /* from */, address /* to */, uint256 /* amount */) public pure override(IERC20, ERC20) returns (bool) { revert TransferDisabled(); } function approve(address /* spender */, uint256 /* amount */) public pure override(ERC20, IERC20) returns (bool) { revert ApproveDisabled(); } function increaseAllowance(address /* spender */, uint256 /* addedValue */) public pure override returns (bool) { revert ApproveDisabled(); } function decreaseAllowance(address /* spender */, uint256 /* subtractedValue */) public pure override returns (bool) { revert ApproveDisabled(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./TokenizedDelegationPod.sol"; import "./interfaces/IFarmingDelegationPod.sol"; import "@1inch/farming/contracts/MultiFarmingPod.sol"; contract FarmingDelegationPod is IFarmingDelegationPod, TokenizedDelegationPod { error DefaultFarmTokenMismatch(); uint256 private constant _MAX_FARM_REWARDS = 3; mapping(address => address) public defaultFarms; constructor(string memory name_, string memory symbol_, IERC20Pods token_, uint256 maxSharePods_, uint256 sharePodGasLimit_) TokenizedDelegationPod(name_, symbol_, token_, maxSharePods_, sharePodGasLimit_) {} // solhint-disable-line no-empty-blocks function register(string memory name, string memory symbol) public override(ITokenizedDelegationPod, TokenizedDelegationPod) returns(IDelegatedShare shareToken) { shareToken = super.register(name, symbol); MultiFarmingPod farm = new MultiFarmingPod(shareToken, _MAX_FARM_REWARDS); farm.transferOwnership(msg.sender); defaultFarms[msg.sender] = address(farm); } function delegate(address delegatee) public override(IDelegationPod, TokenizedDelegationPod) { super.delegate(delegatee); address defaultFarm = defaultFarms[delegatee]; if (defaultFarm != address(0)) { registration[delegatee].addDefaultFarmIfNeeded(msg.sender, defaultFarm); } } function setDefaultFarm(address farm) external onlyRegistered { if (farm != address(0) && Pod(farm).token() != registration[msg.sender]) revert DefaultFarmTokenMismatch(); defaultFarms[msg.sender] = farm; emit DefaultFarmSet(farm); } }
// SPDX-License-Identifier: UNLICENSED pragma solidity >0.0.0; import '@1inch/erc20-pods/contracts/mocks/ERC20PodsMock.sol';
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@1inch/erc20-pods/contracts/interfaces/IERC20Pods.sol"; interface IDelegatedShare is IERC20Pods { function addDefaultFarmIfNeeded(address account, address farm) external; // onlyOwner function mint(address account, uint256 amount) external; // onlyOwner function burn(address account, uint256 amount) external; // onlyOwner }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@1inch/erc20-pods/contracts/interfaces/IPod.sol"; interface IDelegationPod is IPod, IERC20 { event Delegated(address account, address delegatee); function delegated(address delegator) external view returns(address delegatee); function delegate(address delegatee) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./ITokenizedDelegationPod.sol"; interface IFarmingDelegationPod is ITokenizedDelegationPod { event DefaultFarmSet(address defaultFarm); function setDefaultFarm(address farm) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IDelegationPod.sol"; import "./IDelegatedShare.sol"; interface ITokenizedDelegationPod is IDelegationPod { event RegisterDelegatee(address delegatee); function register(string memory name, string memory symbol) external returns(IDelegatedShare shareToken); function registration(address account) external returns(IDelegatedShare shareToken); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./DelegationPod.sol"; import "./DelegatedShare.sol"; import "./interfaces/ITokenizedDelegationPod.sol"; import "./interfaces/IDelegatedShare.sol"; contract TokenizedDelegationPod is ITokenizedDelegationPod, DelegationPod { error NotRegisteredDelegatee(); error AlreadyRegistered(); uint256 public immutable maxSharePods; uint256 public immutable sharePodGasLimit; mapping(address => IDelegatedShare) public registration; modifier onlyRegistered { if (address(registration[msg.sender]) == address(0)) revert NotRegisteredDelegatee(); _; } modifier onlyNotRegistered { if (address(registration[msg.sender]) != address(0)) revert AlreadyRegistered(); _; } constructor(string memory name_, string memory symbol_, IERC20Pods token_, uint256 maxSharePods_, uint256 sharePodGasLimit_) DelegationPod(name_, symbol_, token_) { maxSharePods = maxSharePods_; sharePodGasLimit = sharePodGasLimit_; } function delegate(address delegatee) public virtual override(IDelegationPod, DelegationPod) { if (delegatee != address(0) && address(registration[delegatee]) == address(0)) revert NotRegisteredDelegatee(); super.delegate(delegatee); } function register(string memory name, string memory symbol) public virtual onlyNotRegistered returns(IDelegatedShare shareToken) { shareToken = new DelegatedShare(name, symbol, maxSharePods, sharePodGasLimit); registration[msg.sender] = shareToken; emit RegisterDelegatee(msg.sender); } function _updateBalances(address from, address to, address fromDelegatee, address toDelegatee, uint256 amount) internal virtual override { super._updateBalances(from, to, fromDelegatee, toDelegatee, amount); if (fromDelegatee != address(0)) { registration[fromDelegatee].burn(from, amount); } if (toDelegatee != address(0)) { registration[toDelegatee].mint(to, amount); } } }
{ "optimizer": { "enabled": true, "runs": 1000000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true } }
Contract Security Audit
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","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"podCallGasLimit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"pods","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"podsCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"podsLimit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"removeAllPods","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"pod","type":"address"}],"name":"removePod","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"}]
Contract Creation Code
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