Contract Overview
Balance:
0 ETH
ETH Value:
$0.00
My Name Tag:
Not Available
Txn Hash | Method |
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0xf5cdd9a2da425b11fa9f17cd33e3f0c7afa0d1d807650267bc3fa3cf6f5069a5 | Transfer Ownersh... | 43679300 | 59 days 13 hrs ago | Camelot: Deployer | IN | 0x55401a4f396b3655f66bf6948a1a4dc61dfc21f4 | 0 ETH | 0.00001526 | |
0xa29a3f6c3c138108e3e2b2e543746610e3c8c44927af4bd613d324d5290b5252 | Set Yield Booste... | 39341235 | 74 days 23 hrs ago | Camelot: Deployer | IN | 0x55401a4f396b3655f66bf6948a1a4dc61dfc21f4 | 0 ETH | 0.00045881 | |
0x61d6f0aa08e691f8d67fb1964bef70e0e15caf939955102c63aa9e59c0900deb | 0x60c06040 | 39338993 | 74 days 23 hrs ago | Camelot: Deployer | IN | Create: CamelotMaster | 0 ETH | 0.01352845 |
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Contract Name:
CamelotMaster
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 50000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity =0.7.6; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/EnumerableSet.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "./interfaces/ICamelotMaster.sol"; import "./interfaces/INFTPool.sol"; import "./interfaces/IYieldBooster.sol"; import "./interfaces/tokens/IGrailTokenV2.sol"; /* * This contract centralizes Camelot's yield incentives distribution. * Pools that should receive those incentives are defined here, along with their allocation. * All rewards are claimed from the GRAILToken contract. */ contract CamelotMaster is Ownable, ICamelotMaster { using SafeERC20 for IGrailTokenV2; using SafeMath for uint256; using EnumerableSet for EnumerableSet.AddressSet; // Info of each NFT pool struct PoolInfo { uint256 allocPoint; // How many allocation points assigned to this NFT pool uint256 lastRewardTime; // Last time that distribution to this NFT pool occurs uint256 reserve; // Pending rewards to distribute to the NFT pool } IGrailTokenV2 private immutable _grailToken; // Address of the GRAIL token contract IYieldBooster private _yieldBooster; // Contract address handling yield boosts mapping(address => PoolInfo) private _poolInfo; // Pools' information EnumerableSet.AddressSet private _pools; // All existing pool addresses EnumerableSet.AddressSet private _activePools; // Only contains pool addresses w/ allocPoints > 0 uint256 public totalAllocPoint; // Total allocation points. Must be the sum of all allocation points in all pools uint256 public immutable startTime; // The time at which farming starts bool public override emergencyUnlock; // Used by pools to release all their locks at once in case of emergency constructor( IGrailTokenV2 grailToken_, uint256 startTime_ ) { require(address(grailToken_) != address(0), "CamelotMaster: grailToken cannot be set to zero address"); require(_currentBlockTimestamp() < startTime_ && startTime_ >= grailToken_.lastEmissionTime(), "CamelotMaster: invalid startTime"); _grailToken = grailToken_; startTime = startTime_; // Must be set with the same time as GrailToken emission start } /********************************************/ /****************** EVENTS ******************/ /********************************************/ event ClaimRewards(address indexed poolAddress, uint256 amount); event PoolAdded(address indexed poolAddress, uint256 allocPoint); event PoolSet(address indexed poolAddress, uint256 allocPoint); event SetYieldBooster(address previousYieldBooster, address newYieldBooster); event PoolUpdated(address indexed poolAddress, uint256 reserve, uint256 lastRewardTime); event SetEmergencyUnlock(bool emergencyUnlock); /***********************************************/ /****************** MODIFIERS ******************/ /***********************************************/ /* * @dev Check if a pool exists */ modifier validatePool(address poolAddress) { require(_pools.contains(poolAddress), "validatePool: pool does not exist"); _; } /**************************************************/ /****************** PUBLIC VIEWS ******************/ /**************************************************/ /* * @dev Returns GrailToken address */ function grailToken() external view override returns (address) { return address(_grailToken); } /* * @dev Returns GrailToken's emission rate (allocated to this contract) */ function emissionRate() public view returns (uint256) { return _grailToken.masterEmissionRate(); } /** * @dev Returns current owner's address */ function owner() public view virtual override(ICamelotMaster, Ownable) returns (address) { return Ownable.owner(); } /** * @dev Returns YieldBooster's address */ function yieldBooster() external view override returns (address) { return address(_yieldBooster); } /** * @dev Returns the number of available pools */ function poolsLength() external view returns (uint256) { return _pools.length(); } /** * @dev Returns a pool from its "index" */ function getPoolAddressByIndex(uint256 index) external view returns (address) { if (index >= _pools.length()) return address(0); return _pools.at(index); } /** * @dev Returns the number of active pools */ function activePoolsLength() external view returns (uint256) { return _activePools.length(); } /** * @dev Returns an active pool from its "index" */ function getActivePoolAddressByIndex(uint256 index) external view returns (address) { if (index >= _activePools.length()) return address(0); return _activePools.at(index); } /** * @dev Returns data of a given pool */ function getPoolInfo(address poolAddress_) external view override returns ( address poolAddress, uint256 allocPoint, uint256 lastRewardTime, uint256 reserve, uint256 poolEmissionRate ) { PoolInfo memory pool = _poolInfo[poolAddress_]; poolAddress = poolAddress_; allocPoint = pool.allocPoint; lastRewardTime = pool.lastRewardTime; reserve = pool.reserve; if (totalAllocPoint == 0) { poolEmissionRate = 0; } else { poolEmissionRate = emissionRate().mul(allocPoint).div(totalAllocPoint); } } /*******************************************************/ /****************** OWNABLE FUNCTIONS ******************/ /*******************************************************/ /** * @dev Set YieldBooster contract's address * * Must only be called by the owner */ function setYieldBooster(IYieldBooster yieldBooster_) external onlyOwner { require(address(yieldBooster_) != address(0), "setYieldBooster: cannot be set to zero address"); emit SetYieldBooster(address(_yieldBooster), address(yieldBooster_)); _yieldBooster = yieldBooster_; } /** * @dev Set emergency unlock status for all pools * * Must only be called by the owner */ function setEmergencyUnlock(bool emergencyUnlock_) external onlyOwner { emergencyUnlock = emergencyUnlock_; emit SetEmergencyUnlock(emergencyUnlock); } /** * @dev Adds a new pool * param withUpdate should be set to true every time it's possible * * Must only be called by the owner */ function add(INFTPool nftPool, uint256 allocPoint, bool withUpdate) external onlyOwner { address poolAddress = address(nftPool); require(!_pools.contains(poolAddress), "add: pool already exists"); uint256 currentBlockTimestamp = _currentBlockTimestamp(); if (allocPoint > 0) { if (withUpdate) { // Update all pools if new pool allocPoint > 0 _massUpdatePools(); } _activePools.add(poolAddress); } // update lastRewardTime if startTime has already been passed uint256 lastRewardTime = currentBlockTimestamp > startTime ? currentBlockTimestamp : startTime; // update totalAllocPoint with the new pool's points totalAllocPoint = totalAllocPoint.add(allocPoint); // add new pool _poolInfo[poolAddress] = PoolInfo({ allocPoint : allocPoint, lastRewardTime : lastRewardTime, reserve : 0 }); _pools.add(poolAddress); emit PoolAdded(poolAddress, allocPoint); } /** * @dev Updates configuration on existing pool * param withUpdate should be set to true every time it's possible * * Must only be called by the owner */ function set(address poolAddress, uint256 allocPoint, bool withUpdate) external validatePool(poolAddress) onlyOwner { PoolInfo storage pool = _poolInfo[poolAddress]; uint256 prevAllocPoint = pool.allocPoint; if (withUpdate) { _massUpdatePools(); } _updatePool(poolAddress); // update (pool's and total) allocPoints pool.allocPoint = allocPoint; totalAllocPoint = totalAllocPoint.sub(prevAllocPoint).add(allocPoint); // if request is activating the pool if (prevAllocPoint == 0 && allocPoint > 0) { _activePools.add(poolAddress); } // if request is deactivating the pool else if (prevAllocPoint > 0 && allocPoint == 0) { _activePools.remove(poolAddress); } emit PoolSet(poolAddress, allocPoint); } /****************************************************************/ /****************** EXTERNAL PUBLIC FUNCTIONS ******************/ /****************************************************************/ /** * @dev Updates rewards states of the given pool to be up-to-date */ function updatePool(address nftPool) external validatePool(nftPool) { _updatePool(nftPool); } /** * @dev Updates rewards states for all pools * * Be careful of gas spending */ function massUpdatePools() external { _massUpdatePools(); } /** * @dev Transfer to a pool its pending rewards in reserve, can only be called by the NFT pool contract itself */ function claimRewards() external override returns (uint256 rewardsAmount) { // check if caller is a listed pool if (!_pools.contains(msg.sender)) { return 0; } _updatePool(msg.sender); // updates caller's reserve PoolInfo storage pool = _poolInfo[msg.sender]; uint256 reserve = pool.reserve; if (reserve == 0) { return 0; } pool.reserve = 0; emit ClaimRewards(msg.sender, reserve); return _safeRewardsTransfer(msg.sender, reserve); } /********************************************************/ /****************** INTERNAL FUNCTIONS ******************/ /********************************************************/ /** * @dev Safe token transfer function, in case rounding error causes pool to not have enough tokens */ function _safeRewardsTransfer(address to, uint256 amount) internal returns (uint256 effectiveAmount) { uint256 grailBalance = _grailToken.balanceOf(address(this)); if (amount > grailBalance) { amount = grailBalance; } _grailToken.safeTransfer(to, amount); return amount; } /** * @dev Updates rewards states of the given pool to be up-to-date * * Pool should be validated prior to calling this */ function _updatePool(address poolAddress) internal { PoolInfo storage pool = _poolInfo[poolAddress]; uint256 currentBlockTimestamp = _currentBlockTimestamp(); uint256 lastRewardTime = pool.lastRewardTime; // gas saving uint256 allocPoint = pool.allocPoint; // gas saving if (currentBlockTimestamp <= lastRewardTime) { return; } // do not allocate rewards if pool is not active if (allocPoint > 0 && INFTPool(poolAddress).hasDeposits()) { // calculate how much GRAIL rewards are expected to be received for this pool uint256 rewards = currentBlockTimestamp.sub(lastRewardTime) // nbSeconds .mul(emissionRate()).mul(allocPoint).div(totalAllocPoint); // claim expected rewards from the token // use returns effective minted amount instead of expected amount (rewards) = _grailToken.claimMasterRewards(rewards); // updates pool data pool.reserve = pool.reserve.add(rewards); } pool.lastRewardTime = currentBlockTimestamp; emit PoolUpdated(poolAddress, pool.reserve, currentBlockTimestamp); } /** * @dev Updates rewards states for all pools * * Be careful of gas spending */ function _massUpdatePools() internal { uint256 length = _activePools.length(); for (uint256 index = 0; index < length; ++index) { _updatePool(_activePools.at(index)); } } /** * @dev Utility function to get the current block timestamp */ function _currentBlockTimestamp() internal view virtual returns (uint256) { /* solhint-disable not-rely-on-time */ return block.timestamp; } }
// SPDX-License-Identifier: MIT pragma solidity =0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IGrailTokenV2 is IERC20{ function lastEmissionTime() external view returns (uint256); function claimMasterRewards(uint256 amount) external returns (uint256 effectiveAmount); function masterEmissionRate() external view returns (uint256); function burn(uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity =0.7.6; interface IYieldBooster { function deallocateAllFromPool(address userAddress, uint256 tokenId) external; function getMultiplier(address poolAddress, uint256 maxBoostMultiplier, uint256 amount, uint256 totalPoolSupply, uint256 allocatedAmount) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity =0.7.6; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; interface INFTPool is IERC721 { function exists(uint256 tokenId) external view returns (bool); function hasDeposits() external view returns (bool); function getPoolInfo() external view returns ( address lpToken, address grailToken, address sbtToken, uint256 lastRewardTime, uint256 accRewardsPerShare, uint256 lpSupply, uint256 lpSupplyWithMultiplier, uint256 allocPoint ); function getStakingPosition(uint256 tokenId) external view returns ( uint256 amount, uint256 amountWithMultiplier, uint256 startLockTime, uint256 lockDuration, uint256 lockMultiplier, uint256 rewardDebt, uint256 boostPoints, uint256 totalMultiplier ); function boost(uint256 userAddress, uint256 amount) external; function unboost(uint256 userAddress, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity =0.7.6; interface ICamelotMaster { function grailToken() external view returns (address); function yieldBooster() external view returns (address); function owner() external view returns (address); function emergencyUnlock() external view returns (bool); function getPoolInfo(address _poolAddress) external view returns (address poolAddress, uint256 allocPoint, uint256 lastRewardTime, uint256 reserve, uint256 poolEmissionRate); function claimRewards() external returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../../introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 50000 }, "evmVersion": "istanbul", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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IYieldBooster","name":"yieldBooster_","type":"address"}],"name":"setYieldBooster","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nftPool","type":"address"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"yieldBooster","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000003d9907f9a368ad0a51be60f7da3b97cf940982d8000000000000000000000000000000000000000000000000000000006390c690
-----Decoded View---------------
Arg [0] : grailToken_ (address): 0x3d9907f9a368ad0a51be60f7da3b97cf940982d8
Arg [1] : startTime_ (uint256): 1670432400
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000003d9907f9a368ad0a51be60f7da3b97cf940982d8
Arg [1] : 000000000000000000000000000000000000000000000000000000006390c690
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