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Latest 25 from a total of 64,044 transactions
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Claim | 17012920 | 3 hrs ago | IN | 0 CRO | 4.22011835 | ||||
Claim | 17012305 | 4 hrs ago | IN | 0 CRO | 3.96523475 | ||||
Claim | 17007830 | 11 hrs ago | IN | 0 CRO | 3.9780062 | ||||
Claim | 17007343 | 12 hrs ago | IN | 0 CRO | 4.1850796 | ||||
Claim | 17007014 | 12 hrs ago | IN | 0 CRO | 4.1851472 | ||||
Claim | 17006721 | 13 hrs ago | IN | 0 CRO | 3.99076876 | ||||
Claim | 17004441 | 16 hrs ago | IN | 0 CRO | 4.06321959 | ||||
Claim | 17003148 | 19 hrs ago | IN | 0 CRO | 4.04619605 | ||||
Claim | 17002080 | 20 hrs ago | IN | 0 CRO | 4.13658439 | ||||
Update Trading R... | 17001882 | 21 hrs ago | IN | 0 CRO | 0.5 | ||||
Claim | 17001135 | 22 hrs ago | IN | 0 CRO | 4.06419455 | ||||
Claim | 17000967 | 22 hrs ago | IN | 0 CRO | 4.0631691 | ||||
Claim | 16999280 | 25 hrs ago | IN | 0 CRO | 3.97787995 | ||||
Claim | 16998547 | 26 hrs ago | IN | 0 CRO | 3.97806175 | ||||
Claim | 16998313 | 26 hrs ago | IN | 0 CRO | 4.06436625 | ||||
Claim | 16997396 | 28 hrs ago | IN | 0 CRO | 4.1380407 | ||||
Claim | 16996552 | 29 hrs ago | IN | 0 CRO | 4.05044184 | ||||
Claim | 16995129 | 32 hrs ago | IN | 0 CRO | 4.13224773 | ||||
Claim | 16993372 | 34 hrs ago | IN | 0 CRO | 3.97806175 | ||||
Claim | 16992394 | 36 hrs ago | IN | 0 CRO | 4.0643612 | ||||
Claim | 16991878 | 37 hrs ago | IN | 0 CRO | 4.0642602 | ||||
Claim | 16991857 | 37 hrs ago | IN | 0 CRO | 4.04620614 | ||||
Claim | 16990871 | 38 hrs ago | IN | 0 CRO | 3.97689024 | ||||
Claim | 16990691 | 39 hrs ago | IN | 0 CRO | 4.0643612 | ||||
Update Trading R... | 16987042 | 45 hrs ago | IN | 0 CRO | 0.5 |
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Contract Name:
RewardsDistributorWithVesting
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Pausable} from "@openzeppelin/contracts/security/Pausable.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import {MerkleProof} from "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import {IERC20, SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {MintedBoost} from "./MintedBoost.sol"; import {AccessControlEnumerable} from "@openzeppelin/contracts/access/AccessControlEnumerable.sol"; /** * @title RewardsDistributor * @notice It distributes MINTED tokens with rolling Merkle airdrops. */ contract RewardsDistributorWithVesting is Pausable, ReentrancyGuard, AccessControlEnumerable { using SafeERC20 for IERC20; struct StakePool { uint256 shares; bool active; } bytes32 public constant UPDATE_REWARD_ROLE = keccak256("UPDATE_REWARD_ROLE"); uint256[] public stakedPids; mapping(uint256 => StakePool) public stakePoolInfo; uint256 public constant TOTAL_SHARES = 10000; //100 percent uint256 public constant BUFFER_ADMIN_WITHDRAW = 3 days; IERC20 public immutable mintedToken; // Current reward round (users can only claim pending rewards for the current round) uint256 public currentRewardRound; // Last paused timestamp uint256 public lastPausedTimestamp; // Max amount per user in current tree uint256 public maximumAmountPerUserInCurrentTree; // Total amount claimed uint256 public totalClaimed; uint256 public totalReleased; MintedBoost public mintedBoost; uint256 public rewardSharesToUser; uint256 public rewardSharesToStake; // Total amount claimed by user (in MTD) mapping(address => uint256) public amountClaimedByUser; // Merkle root for a reward round mapping(uint256 => bytes32) public merkleRootOfRewardRound; // Checks whether a merkle root was used mapping(bytes32 => bool) public merkleRootUsed; // Keeps track on whether user has claimed at a given reward round mapping(uint256 => mapping(address => bool)) public hasUserClaimedForRewardRound; event RewardsClaim(address indexed user, uint256 indexed rewardRound, uint256 amount); event UpdateTradingRewards(uint256 indexed rewardRound); event TokenWithdrawnOwner(uint256 amount); event UpdateMintedBoost(address _newMintedBoost, address _oldMintedBoost); event AddPool(uint256 _pid); event UpdateShareDistribution(uint256 rewardSharesToUser, uint256 rewardSharesToStake); /** * @notice Constructor * @param _mintedToken address of the MTD token * @param _rewardSharesToUser percentage of token directly to user, 2500 = 25% * @param _rewardSharesToStake percentage of token to MintedBoost, 5000 = 50% * @param _pidsToStake array of pids in MintedBoost * @param _stakeshares percentage of token sent to each pid in _pidsToStake */ constructor( address _mintedToken, uint256 _rewardSharesToUser, uint256 _rewardSharesToStake, uint256[] memory _pidsToStake, uint256[] memory _stakeshares ) { _grantRole(DEFAULT_ADMIN_ROLE, msg.sender); _grantRole(UPDATE_REWARD_ROLE, msg.sender); require(_pidsToStake.length == _stakeshares.length, "length mismatch"); require(_rewardSharesToUser + _rewardSharesToStake == 100_00, "wrong reward shares distribution"); rewardSharesToUser = _rewardSharesToUser; for (uint256 i; i < _pidsToStake.length; i++) { require(stakePoolInfo[_pidsToStake[i]].active == false, "duplicate pid"); rewardSharesToStake += _stakeshares[i]; stakePoolInfo[_pidsToStake[i]] = StakePool(_stakeshares[i], true); stakedPids.push(_pidsToStake[i]); } require(rewardSharesToStake == _rewardSharesToStake, "wrong stake shares distribution"); mintedToken = IERC20(_mintedToken); _pause(); } function setMintedBoost(address _newMintedBoost) external onlyRole(DEFAULT_ADMIN_ROLE) { require(_newMintedBoost != address(0), "Invalid address"); require(_newMintedBoost != address(mintedBoost), "mintedBoost already exist"); address _oldmintedBoost = address(mintedBoost); mintedBoost = MintedBoost(_newMintedBoost); // Gas saving, pre-approve max mintedToken.approve(_newMintedBoost, type(uint256).max); emit UpdateMintedBoost(_newMintedBoost, _oldmintedBoost); } function stakePoolLength() public view returns (uint256) { return stakedPids.length; } /** * @notice Add a new MintedBoost pid. This only add a new pid and does not send * user fund to the pid yet (share set as 0) */ function addPool(uint256 _pid) external onlyRole(DEFAULT_ADMIN_ROLE) { require(address(mintedBoost) != address(0), "mintedBoost is not setup"); uint256 pidLength = mintedBoost.poolLength(); require(_pid < pidLength, "Invalid Pool ID"); require(stakePoolInfo[_pid].active == false, "duplicate pid"); stakePoolInfo[_pid] = StakePool(0, true); stakedPids.push(_pid); emit AddPool(_pid); } /** * @notice Update share distribution across all the pid. */ function updateShareDistribution( uint256 _rewardSharesToUser, uint256 _rewardSharesToStake, uint256[] memory _pidsToStake, uint256[] memory _stakeshares ) external onlyRole(DEFAULT_ADMIN_ROLE) { require(address(mintedBoost) != address(0), "mintedBoost is not setup"); require(_pidsToStake.length == _stakeshares.length, "length mismatch"); require(_rewardSharesToUser + _rewardSharesToStake == 100_00, "wrong reward shares distribution"); rewardSharesToUser = _rewardSharesToUser; uint256 totalStakeShares; for (uint256 i; i < _pidsToStake.length; i++) { require(stakePoolInfo[_pidsToStake[i]].active == true, "pid doesn't exist"); totalStakeShares += _stakeshares[i]; stakePoolInfo[_pidsToStake[i]].shares = _stakeshares[i]; } require(totalStakeShares == _rewardSharesToStake, "wrong stake shares distribution"); rewardSharesToStake = _rewardSharesToStake; // Check if total pid share is still === _rewardSharesToStake uint256 totalStakedShare = 0; for (uint256 i = 0; i < stakedPids.length; i++) { totalStakedShare += stakePoolInfo[stakedPids[i]].shares; } require(totalStakedShare == _rewardSharesToStake, "totalStakedShare != _rewardSharesToStake"); emit UpdateShareDistribution(_rewardSharesToUser, _rewardSharesToStake); } /** * @notice Claim pending rewards * @param amount amount to claim * @param merkleProof array containing the merkle proof */ function claim(uint256 amount, bytes32[] calldata merkleProof) external whenNotPaused nonReentrant { require(address(mintedBoost) != address(0), "mintedBoost is not setup"); // Verify the reward round is not claimed already require(!hasUserClaimedForRewardRound[currentRewardRound][msg.sender], "Rewards: Already claimed"); require(amount >= amountClaimedByUser[msg.sender], "Rewards: underflow claim amount"); (bool claimStatus, uint256 adjustedAmount) = _canClaim(msg.sender, amount, merkleProof); require(claimStatus, "Rewards: Invalid proof"); require(maximumAmountPerUserInCurrentTree >= amount, "Rewards: Amount higher than max"); // Set mapping for user and round as true hasUserClaimedForRewardRound[currentRewardRound][msg.sender] = true; // Adjust amount claimed amountClaimedByUser[msg.sender] += adjustedAmount; totalClaimed += adjustedAmount; // Take a percentage of adjustedAmount and lock into MintedBoost uint256 amountToUser = adjustedAmount; for (uint256 i; i < stakedPids.length; i++) { uint256 stakeAmount = (adjustedAmount * stakePoolInfo[stakedPids[i]].shares) / TOTAL_SHARES; if (stakeAmount > 0) { mintedBoost.depositFor(stakedPids[i], stakeAmount, msg.sender); amountToUser -= stakeAmount; } } // Transfer remaining amount to user if (rewardSharesToUser != 0) { // Do not send dust amount to user if rewardSharesToUser = 0 (prevent confusion) mintedToken.safeTransfer(msg.sender, amountToUser); totalReleased += amountToUser; } emit RewardsClaim(msg.sender, currentRewardRound, adjustedAmount); } /** * @notice Update trading rewards with a new merkle root * @dev It automatically increments the currentRewardRound * @param merkleRoot root of the computed merkle tree */ function updateTradingRewards(bytes32 merkleRoot, uint256 newMaximumAmountPerUser) external { require( hasRole(DEFAULT_ADMIN_ROLE, msg.sender) || hasRole(UPDATE_REWARD_ROLE, msg.sender), "no permission to call" ); require( newMaximumAmountPerUser >= maximumAmountPerUserInCurrentTree, "newMaximumAmountPerUser must be >= maximumAmountPerUserInCurrentTree" ); require(address(mintedBoost) != address(0), "mintedBoost is not setup"); require(!merkleRootUsed[merkleRoot], "Owner: Merkle root already used"); currentRewardRound++; merkleRootOfRewardRound[currentRewardRound] = merkleRoot; merkleRootUsed[merkleRoot] = true; maximumAmountPerUserInCurrentTree = newMaximumAmountPerUser; emit UpdateTradingRewards(currentRewardRound); } /** * @notice Pause distribution */ function pauseDistribution() external onlyRole(DEFAULT_ADMIN_ROLE) whenNotPaused { lastPausedTimestamp = block.timestamp; _pause(); } /** * @notice Unpause distribution */ function unpauseDistribution() external onlyRole(DEFAULT_ADMIN_ROLE) whenPaused { _unpause(); } /** * @notice Transfer MTD tokens back to owner * @dev It is for emergency purposes * @param amount amount to withdraw */ function withdrawTokenRewards(uint256 amount) external onlyRole(DEFAULT_ADMIN_ROLE) whenPaused { require( block.timestamp > (lastPausedTimestamp + BUFFER_ADMIN_WITHDRAW), "Owner: Too early to withdraw" ); mintedToken.safeTransfer(msg.sender, amount); emit TokenWithdrawnOwner(amount); } /** * @notice Check whether it is possible to claim and how much based on previous distribution * @param user address of the user * @param amount amount to claim * @param merkleProof array with the merkle proof */ function canClaim( address user, uint256 amount, bytes32[] calldata merkleProof ) external view returns (bool, uint256) { return _canClaim(user, amount, merkleProof); } /** * @notice Check whether it is possible to claim and how much based on previous distribution * @param user address of the user * @param amount amount to claim * @param merkleProof array with the merkle proof */ function _canClaim( address user, uint256 amount, bytes32[] calldata merkleProof ) internal view returns (bool, uint256) { // return early if user has claimed or amount smaller than amountClaimed if ((hasUserClaimedForRewardRound[currentRewardRound][user]) || amount < amountClaimedByUser[user]) { return (false, 0); } // Compute the node and verify the merkle proof bytes32 node = keccak256(abi.encodePacked(user, amount)); bool canUserClaim = MerkleProof.verify( merkleProof, merkleRootOfRewardRound[currentRewardRound], node ); if (!canUserClaim) { return (false, 0); } else { return (true, amount - amountClaimedByUser[user]); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Tree proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. * * WARNING: You should avoid using leaf values that are 64 bytes long prior to * hashing, or use a hash function other than keccak256 for hashing leaves. * This is because the concatenation of a sorted pair of internal nodes in * the merkle tree could be reinterpreted as a leaf value. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Calldata version of {verify} * * _Available since v4.7._ */ function verifyCalldata( bytes32[] calldata proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProofCalldata(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Calldata version of {processProof} * * _Available since v4.7._ */ function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if the `leaves` can be proved to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * _Available since v4.7._ */ function multiProofVerify( bytes32[] memory proof, bool[] memory proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProof(proof, proofFlags, leaves) == root; } /** * @dev Calldata version of {multiProofVerify} * * _Available since v4.7._ */ function multiProofVerifyCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProofCalldata(proof, proofFlags, leaves) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and the sibling nodes in `proof`, * consuming from one or the other at each step according to the instructions given by * `proofFlags`. * * _Available since v4.7._ */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the merkle tree. uint256 leavesLen = leaves.length; uint256 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Calldata version of {processMultiProof} * * _Available since v4.7._ */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the merkle tree. uint256 leavesLen = leaves.length; uint256 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) { return a < b ? _efficientHash(a, b) : _efficientHash(b, a); } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { /// @solidity memory-safe-assembly assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import {TokenDistributor} from "./TokenDistributor.sol"; import {FeeDistributor} from "./FeeDistributor.sol"; /** * @dev It calls TokenDistributor which in turns mint new MTD rewards * @dev It calls FeeDistributor which in turns mint new WCRO rewards * @dev Stake MTD to earn more MTD and WCRO */ contract MintedBoost is Initializable, UUPSUpgradeable, OwnableUpgradeable, ERC20Upgradeable, ReentrancyGuardUpgradeable { using SafeERC20Upgradeable for IERC20Upgradeable; struct Stake { uint256 amount; uint256 poolId; uint256 weightedAmount; uint256 stakeTimestamp; uint256 unlockTimestamp; bool active; } struct PoolInfo { uint256 multiplier; uint256 lockPeriod; uint256 totalStaked; } struct UserInfo { uint256 weightedAmount; uint256 rewardDebt; uint256 croRewardDebt; Stake[] stakes; } mapping(address => UserInfo) public userInfo; PoolInfo[] public poolInfo; // multiplier -> lockPeriod -> poolID (in +1 format) mapping(uint256 => mapping(uint256 => uint256)) public activePoolMap; uint256 public lastMtdBalance; uint256 public accTokenPerShare; uint256 public lastWcroBalance; uint256 public accWcroPerShare; uint256 public lastRewardBlock; IERC20Upgradeable public mtd; IERC20Upgradeable public wcro; TokenDistributor public tokenDist; FeeDistributor public feeDist; uint256 public constant PRECISION = 10**18; event Deposit( address indexed user, uint256 indexed pid, uint256 indexed stakeId, uint256 amount, uint256 weightedAmount, uint256 unlockTimestamp ); event Withdraw(address indexed user, uint256 indexed stakeId, uint256 amount, uint256 weightedAmount); event Upgrade( address indexed user, uint256 indexed stakeId, uint256 indexed newPid, uint256 newWeightedAmount, uint256 newUnlockTimestamp ); event AddPool(uint256 indexed poolId, uint256 multiplier, uint256 lockPeriod); event SetPool(uint256 indexed poolId, uint256 multiplier, uint256 lockPeriod); event UpdateFeeDistributor(address _newFeeDistributor, address _oldFeeDist); event UpdateTokenDistributor(address _newTokenDistributor, address _oldTokenDist); /// @custom:oz-upgrades-unsafe-allow constructor constructor() { _disableInitializers(); } function initialize( IERC20Upgradeable _mtd, IERC20Upgradeable _wcro, address _tokenDist, address _feeDist ) public initializer { mtd = _mtd; wcro = _wcro; tokenDist = TokenDistributor(_tokenDist); feeDist = FeeDistributor(_feeDist); __Ownable_init(); __UUPSUpgradeable_init(); __ERC20_init("MTD Boost Bearing Token", "MBOOST"); } function updateFeeDistributor(address _newFeeDistributor) external onlyOwner { require(_newFeeDistributor != address(0), "Invalid address"); require(_newFeeDistributor != address(feeDist), "FeeDistributor already exist"); address _oldFeeDist = address(feeDist); feeDist = FeeDistributor(_newFeeDistributor); emit UpdateFeeDistributor(_newFeeDistributor, _oldFeeDist); } function updateTokenDistributor(address _newTokenDistributor) external onlyOwner { require(_newTokenDistributor != address(0), "Invalid address"); require(_newTokenDistributor != address(tokenDist), "TokenDistributor already exist"); address _oldTokenDist = address(tokenDist); tokenDist = TokenDistributor(_newTokenDistributor); emit UpdateTokenDistributor(_newTokenDistributor, _oldTokenDist); } function deposit(uint256 _pid, uint256 _amount) external { depositFor(_pid, _amount, msg.sender); } /// @param _user address to deposit on behalf on. MTD will come from msg.sender instead of user function depositFor( uint256 _pid, uint256 _amount, address _user ) public nonReentrant { PoolInfo storage pool = poolInfo[_pid]; require(pool.multiplier > 0, "MintedBoost: Invalid Pool ID"); _harvest(); Stake memory stake; UserInfo storage user = userInfo[_user]; if (user.weightedAmount > 0) { uint256 pending = (user.weightedAmount * accTokenPerShare) / PRECISION - user.rewardDebt; if (pending > 0) { // In case of rounding error, contract does not have enough minted if (lastMtdBalance < pending) { pending = lastMtdBalance; } mtd.safeTransfer(_user, pending); lastMtdBalance = mtd.balanceOf(address(this)); } uint256 pendingCro = (user.weightedAmount * accWcroPerShare) / PRECISION - user.croRewardDebt; if (pendingCro > 0) { if (lastWcroBalance < pendingCro) { pendingCro = lastWcroBalance; } wcro.safeTransfer(_user, pendingCro); lastWcroBalance = wcro.balanceOf(address(this)); } } if (_amount > 0) { uint256 weightedAmount = pool.multiplier * _amount; stake.amount = _amount; stake.poolId = _pid; stake.weightedAmount = weightedAmount; stake.stakeTimestamp = block.timestamp; stake.unlockTimestamp = block.timestamp + pool.lockPeriod; stake.active = true; pool.totalStaked += _amount; mtd.safeTransferFrom(msg.sender, address(this), _amount); lastMtdBalance = mtd.balanceOf(address(this)); _mint(_user, weightedAmount); user.stakes.push(stake); user.weightedAmount += weightedAmount; } user.rewardDebt = (user.weightedAmount * accTokenPerShare) / PRECISION; user.croRewardDebt = (user.weightedAmount * accWcroPerShare) / PRECISION; emit Deposit( _user, _pid, user.stakes.length - 1, _amount, stake.weightedAmount, stake.unlockTimestamp ); } function withdraw(uint256 _stakeId) public nonReentrant { UserInfo storage user = userInfo[msg.sender]; Stake storage stake = user.stakes[_stakeId]; PoolInfo storage pool = poolInfo[stake.poolId]; require(block.timestamp >= stake.unlockTimestamp, "MintedBoost: Stake not Ready for Withdrawal"); require(stake.active, "MintedBoost: Stake not Active"); _harvest(); if (user.weightedAmount > 0) { uint256 pending = (user.weightedAmount * accTokenPerShare) / PRECISION - user.rewardDebt; if (pending > 0) { // In case of rounding error, contract does not have enough minted if (lastMtdBalance < pending) { pending = lastMtdBalance; } mtd.safeTransfer(msg.sender, pending); lastMtdBalance = mtd.balanceOf(address(this)); } uint256 pendingCro = (user.weightedAmount * accWcroPerShare) / PRECISION - user.croRewardDebt; if (pendingCro > 0) { if (lastWcroBalance < pendingCro) { pendingCro = lastWcroBalance; } wcro.safeTransfer(msg.sender, pendingCro); lastWcroBalance = wcro.balanceOf(address(this)); } } mtd.safeTransfer(msg.sender, stake.amount); lastMtdBalance = mtd.balanceOf(address(this)); user.weightedAmount -= stake.weightedAmount; _burn(msg.sender, stake.weightedAmount); pool.totalStaked -= stake.amount; stake.active = false; user.rewardDebt = (user.weightedAmount * accTokenPerShare) / PRECISION; user.croRewardDebt = (user.weightedAmount * accWcroPerShare) / PRECISION; emit Withdraw(msg.sender, _stakeId, stake.amount, stake.weightedAmount); } function upgrade(uint256 _stakeId, uint256 _newPid) public nonReentrant { UserInfo storage user = userInfo[msg.sender]; Stake storage stake = user.stakes[_stakeId]; PoolInfo storage oldPool = poolInfo[stake.poolId]; PoolInfo storage newPool = poolInfo[_newPid]; require(stake.active, "MintedBoost: Stake not Active"); require( stake.stakeTimestamp + newPool.lockPeriod >= stake.unlockTimestamp, "MintedBoost: New Stake must be longer" ); require(newPool.multiplier > stake.weightedAmount / stake.amount, "MintedBoost: Why downgrade"); _harvest(); if (user.weightedAmount > 0) { uint256 pending = (user.weightedAmount * accTokenPerShare) / PRECISION - user.rewardDebt; if (pending > 0) { // In case of rounding error, contract does not have enough minted if (lastMtdBalance < pending) { pending = lastMtdBalance; } mtd.safeTransfer(msg.sender, pending); lastMtdBalance = mtd.balanceOf(address(this)); } uint256 pendingCro = (user.weightedAmount * accWcroPerShare) / PRECISION - user.croRewardDebt; if (pendingCro > 0) { if (lastWcroBalance < pendingCro) { pendingCro = lastWcroBalance; } wcro.safeTransfer(msg.sender, pendingCro); lastWcroBalance = wcro.balanceOf(address(this)); } } stake.poolId = _newPid; stake.unlockTimestamp = stake.stakeTimestamp + newPool.lockPeriod; uint256 upgradeAmount = newPool.multiplier * stake.amount - stake.weightedAmount; user.weightedAmount += upgradeAmount; stake.weightedAmount += upgradeAmount; _mint(msg.sender, upgradeAmount); oldPool.totalStaked -= stake.amount; newPool.totalStaked += stake.amount; user.rewardDebt = (user.weightedAmount * accTokenPerShare) / PRECISION; user.croRewardDebt = (user.weightedAmount * accWcroPerShare) / PRECISION; emit Upgrade(msg.sender, _stakeId, _newPid, stake.weightedAmount, stake.unlockTimestamp); } function batchWithdraw(uint256[] calldata _stakeIds) external { for (uint256 i; i < _stakeIds.length; i++) { withdraw(_stakeIds[i]); } } function batchUpgrade(uint256[] calldata _stakeIds, uint256[] calldata _newPids) external { require(_stakeIds.length == _newPids.length, "MintedBoost: Array length mismatch"); for (uint256 i; i < _stakeIds.length; i++) { upgrade(_stakeIds[i], _newPids[i]); } } function _harvest() internal { if (block.number <= lastRewardBlock) { return; } if (totalSupply() == 0) { lastRewardBlock = block.number; return; } tokenDist.updatePool(); feeDist.updateRewards(); uint256 harvestedMtd = mtd.balanceOf(address(this)) - lastMtdBalance; lastMtdBalance = mtd.balanceOf(address(this)); accTokenPerShare += (PRECISION * harvestedMtd) / totalSupply(); uint256 harvestedCro = wcro.balanceOf(address(this)) - lastWcroBalance; lastWcroBalance = wcro.balanceOf(address(this)); accWcroPerShare += (PRECISION * harvestedCro) / totalSupply(); lastRewardBlock = block.number; } function add(uint256 _multiplier, uint256 _lockPeriod) public onlyOwner { require(activePoolMap[_multiplier][_lockPeriod] == 0, "MintedBoost: Duplicate Pool"); require(_multiplier > 0, "MintedBoost: Multiplier must be > 0"); poolInfo.push(PoolInfo({multiplier: _multiplier, lockPeriod: _lockPeriod, totalStaked: 0})); activePoolMap[_multiplier][_lockPeriod] = poolInfo.length; emit AddPool(poolInfo.length - 1, _multiplier, _lockPeriod); } function set( uint256 _pid, uint256 _multiplier, uint256 _lockPeriod ) public onlyOwner { require(activePoolMap[_multiplier][_lockPeriod] == 0, "MintedBoost: Duplicate Pool"); require(_multiplier > 0, "MintedBoost: Multiplier must be > 0"); _harvest(); PoolInfo storage pool = poolInfo[_pid]; activePoolMap[pool.multiplier][pool.lockPeriod] = 0; pool.multiplier = _multiplier; pool.lockPeriod = _lockPeriod; activePoolMap[_multiplier][_lockPeriod] = _pid + 1; emit SetPool(_pid, _multiplier, _lockPeriod); } function getUserInfo(address _user) external view returns ( uint256, uint256, Stake[] memory ) { UserInfo memory user = userInfo[_user]; return (user.weightedAmount, user.rewardDebt, user.stakes); } /** * @dev Just in case there are too many Stakes and jams `getUserInfo` */ function getUserStake(address _user, uint256 _stakeId) external view returns (Stake memory) { return userInfo[_user].stakes[_stakeId]; } function pendingMTD(address _user) external view returns (uint256) { if (totalSupply() == 0) { return 0; } UserInfo memory user = userInfo[_user]; uint256 tAccTokenPerShare = accTokenPerShare; (uint256 mtdToHarvest, ) = tokenDist.getPendingRewards(); tAccTokenPerShare += (PRECISION * mtdToHarvest) / totalSupply(); uint256 pendingMtd = (user.weightedAmount * tAccTokenPerShare) / PRECISION - user.rewardDebt; return pendingMtd; } function pendingWCRO(address _user) external view returns (uint256) { if (totalSupply() == 0) { return 0; } UserInfo memory user = userInfo[_user]; uint256 tAccWcroPerShare = accWcroPerShare; uint256 wcroToHarvest = feeDist.getPendingRewards(); tAccWcroPerShare += (PRECISION * wcroToHarvest) / totalSupply(); uint256 pendingCro = (user.weightedAmount * tAccWcroPerShare) / PRECISION - user.croRewardDebt; return pendingCro; } function poolLength() external view returns (uint256) { return poolInfo.length; } /** * @dev BOOST Token is currently non-transferable */ function _beforeTokenTransfer( address _from, address _to, uint256 ) internal pure override { require(_from == address(0) || _to == address(0), "MintedBoost: Transfer not permitted"); } /** * @dev Required by EIP-1822 UUPS */ function _authorizeUpgrade(address) internal override onlyOwner {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControlEnumerable.sol"; import "./AccessControl.sol"; import "../utils/structs/EnumerableSet.sol"; /** * @dev Extension of {AccessControl} that allows enumerating the members of each role. */ abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl { using EnumerableSet for EnumerableSet.AddressSet; mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) { return _roleMembers[role].at(index); } /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) { return _roleMembers[role].length(); } /** * @dev Overload {_grantRole} to track enumerable memberships */ function _grantRole(bytes32 role, address account) internal virtual override { super._grantRole(role, account); _roleMembers[role].add(account); } /** * @dev Overload {_revokeRole} to track enumerable memberships */ function _revokeRole(bytes32 role, address account) internal virtual override { super._revokeRole(role, account); _roleMembers[role].remove(account); } }
// 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 v4.6.0) (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 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 (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @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 (last updated v4.7.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/UUPSUpgradeable.sol) pragma solidity ^0.8.0; import "../../interfaces/draft-IERC1822Upgradeable.sol"; import "../ERC1967/ERC1967UpgradeUpgradeable.sol"; import "./Initializable.sol"; /** * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy. * * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing * `UUPSUpgradeable` with a custom implementation of upgrades. * * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ */ abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable { function __UUPSUpgradeable_init() internal onlyInitializing { } function __UUPSUpgradeable_init_unchained() internal onlyInitializing { } /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment address private immutable __self = address(this); /** * @dev Check that the execution is being performed through a delegatecall call and that the execution context is * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to * fail. */ modifier onlyProxy() { require(address(this) != __self, "Function must be called through delegatecall"); require(_getImplementation() == __self, "Function must be called through active proxy"); _; } /** * @dev Check that the execution is not being performed through a delegate call. This allows a function to be * callable on the implementing contract but not through proxies. */ modifier notDelegated() { require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall"); _; } /** * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the * implementation. It is used to validate that the this implementation remains valid after an upgrade. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier. */ function proxiableUUID() external view virtual override notDelegated returns (bytes32) { return _IMPLEMENTATION_SLOT; } /** * @dev Upgrade the implementation of the proxy to `newImplementation`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. */ function upgradeTo(address newImplementation) external virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, new bytes(0), false); } /** * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call * encoded in `data`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. */ function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, data, true); } /** * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by * {upgradeTo} and {upgradeToAndCall}. * * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}. * * ```solidity * function _authorizeUpgrade(address) internal override onlyOwner {} * ``` */ function _authorizeUpgrade(address newImplementation) internal virtual; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20Upgradeable.sol"; import "../extensions/draft-IERC20PermitUpgradeable.sol"; import "../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable { using AddressUpgradeable for address; function safeTransfer( IERC20Upgradeable token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20Upgradeable 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( IERC20Upgradeable token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20Upgradeable token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20Upgradeable token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20PermitUpgradeable token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @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(IERC20Upgradeable token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // 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 IERC20Upgradeable { /** * @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 v4.7.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20Upgradeable.sol"; import "./extensions/IERC20MetadataUpgradeable.sol"; import "../../utils/ContextUpgradeable.sol"; import "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable { 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. */ function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing { __ERC20_init_unchained(name_, symbol_); } function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing { _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; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev 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 {} /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[45] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializing { _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); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import {IERC20, SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "./interfaces/IMintedToken.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; /** * @title TokenDistributor * @notice It handles the distribution of MTD token. * It auto-adjusts block rewards over a set number of periods. */ contract TokenDistributor is Ownable, ReentrancyGuard { using SafeERC20 for IERC20; using SafeERC20 for IMintedToken; uint256 public constant PRECISION_FACTOR = 10**18; struct StakingPeriod { uint256 rewardPerBlockForStaking; uint256 rewardPerBlockForOthers; uint256 periodLengthInBlock; } IMintedToken public immutable mintedToken; address public immutable tokenSplitter; address public stakingAddr; // Number of reward periods uint256 public immutable NUMBER_PERIODS; // Block number when rewards start uint256 public immutable START_BLOCK; // Current phase for rewards uint256 public currentPhase; // Block number when rewards end uint256 public endBlock; // Block number of the last update uint256 public lastRewardBlock; // Tokens distributed per block for other purposes (team + treasury + trading rewards) uint256 public rewardPerBlockForOthers; // Tokens distributed per block for staking uint256 public rewardPerBlockForStaking; mapping(uint256 => StakingPeriod) public stakingPeriod; event NewRewardsPerBlock( uint256 indexed currentPhase, uint256 startBlock, uint256 rewardPerBlockForStaking, uint256 rewardPerBlockForOthers ); event SetupStakingAddress(address stakingAddr); /** * @notice Constructor * @param _mintedToken MTD token address * @param _tokenSplitter token splitter contract address (for team and trading rewards) * @param _startBlock start block for reward program * @param _rewardsPerBlockForStaking array of rewards per block for staking * @param _rewardsPerBlockForOthers array of rewards per block for other purposes (team + treasury + trading rewards) * @param _periodLengthesInBlocks array of period lengthes * @param _numberPeriods number of periods with different rewards/lengthes (e.g., if 3 changes --> 4 periods) */ constructor( address _mintedToken, address _tokenSplitter, uint256 _startBlock, uint256[] memory _rewardsPerBlockForStaking, uint256[] memory _rewardsPerBlockForOthers, uint256[] memory _periodLengthesInBlocks, uint256 _numberPeriods, uint256 slippage ) { require(_mintedToken != address(0), "Distributor: mintedToken must not be address(0)"); require( (_periodLengthesInBlocks.length == _numberPeriods) && (_rewardsPerBlockForStaking.length == _numberPeriods) && (_rewardsPerBlockForOthers.length == _numberPeriods), "Distributor: lengths must match numberPeriods" ); require(_tokenSplitter != address(0), "Distributor: tokenSplitter must not be address(0)"); // 1. Operational checks for supply uint256 nonCirculatingSupply = IMintedToken(_mintedToken).SUPPLY_CAP() - IMintedToken(_mintedToken).totalSupply(); uint256 amountTokensToBeMinted; for (uint256 i = 0; i < _numberPeriods; i++) { amountTokensToBeMinted += (_rewardsPerBlockForStaking[i] * _periodLengthesInBlocks[i]) + (_rewardsPerBlockForOthers[i] * _periodLengthesInBlocks[i]); stakingPeriod[i] = StakingPeriod({ rewardPerBlockForStaking: _rewardsPerBlockForStaking[i], rewardPerBlockForOthers: _rewardsPerBlockForOthers[i], periodLengthInBlock: _periodLengthesInBlocks[i] }); } require(amountTokensToBeMinted <= nonCirculatingSupply, "Distributor: rewards exceeds supply"); uint256 residueAmt = nonCirculatingSupply - amountTokensToBeMinted; uint256 rewardSlippage = (residueAmt * 100 * PRECISION_FACTOR) / nonCirculatingSupply; require(rewardSlippage <= slippage, "Distributor: slippage exceeds"); // 2. Store values mintedToken = IMintedToken(_mintedToken); tokenSplitter = _tokenSplitter; rewardPerBlockForStaking = _rewardsPerBlockForStaking[0]; rewardPerBlockForOthers = _rewardsPerBlockForOthers[0]; START_BLOCK = _startBlock; endBlock = _startBlock + _periodLengthesInBlocks[0]; NUMBER_PERIODS = _numberPeriods; // Set the lastRewardBlock as the startBlock lastRewardBlock = _startBlock; } /** * @dev updates the staking adddress as a mintedBoost contract address once it is deployed. */ function setupStakingAddress(address _stakingAddr) external onlyOwner { require(_stakingAddr != address(0), "invalid address"); stakingAddr = _stakingAddr; emit SetupStakingAddress(stakingAddr); } /** * @notice Update pool rewards */ function updatePool() external nonReentrant { _updatePool(); } /** * @notice Update reward variables of the pool */ function _updatePool() internal { require(stakingAddr != address(0), "staking address not setup"); if (block.number <= lastRewardBlock) { return; } (uint256 tokenRewardForStaking, uint256 tokenRewardForOthers) = _calculatePendingRewards(); // mint tokens only if token rewards for staking are not null if (tokenRewardForStaking > 0) { // It allows protection against potential issues to prevent funds from being locked mintedToken.mint(stakingAddr, tokenRewardForStaking); mintedToken.mint(tokenSplitter, tokenRewardForOthers); } // Update last reward block only if it wasn't updated after or at the end block if (lastRewardBlock <= endBlock) { lastRewardBlock = block.number; } } function _calculatePendingRewards() internal returns (uint256, uint256) { if (block.number <= lastRewardBlock) { return (0, 0); } // Calculate multiplier uint256 multiplier = _getMultiplier(lastRewardBlock, block.number, endBlock); // Calculate rewards for staking and others uint256 tokenRewardForStaking = multiplier * rewardPerBlockForStaking; uint256 tokenRewardForOthers = multiplier * rewardPerBlockForOthers; // Check whether to adjust multipliers and reward per block while ((block.number > endBlock) && (currentPhase < (NUMBER_PERIODS - 1))) { // Update rewards per block _updateRewardsPerBlock(endBlock); uint256 previousEndBlock = endBlock; // Adjust the end block endBlock += stakingPeriod[currentPhase].periodLengthInBlock; // Adjust multiplier to cover the missing periods with other lower inflation schedule uint256 newMultiplier = _getMultiplier(previousEndBlock, block.number, endBlock); // Adjust token rewards tokenRewardForStaking += (newMultiplier * rewardPerBlockForStaking); tokenRewardForOthers += (newMultiplier * rewardPerBlockForOthers); } return (tokenRewardForStaking, tokenRewardForOthers); } function getPendingRewards() external view returns (uint256, uint256) { if (block.number <= lastRewardBlock) { return (0, 0); } // shadow state vars to avoid updates uint256 tEndBlock = endBlock; uint256 tCurrentPhase = currentPhase; uint256 tRewardPerBlockForStaking = rewardPerBlockForStaking; uint256 tRewardPerBlockForOthers = rewardPerBlockForOthers; // Calculate multiplier uint256 multiplier = _getMultiplier(lastRewardBlock, block.number, tEndBlock); // Calculate rewards for staking and others uint256 tokenRewardForStaking = multiplier * tRewardPerBlockForStaking; uint256 tokenRewardForOthers = multiplier * tRewardPerBlockForOthers; // Check whether to adjust multipliers and reward per block while ((block.number > tEndBlock) && (tCurrentPhase < (NUMBER_PERIODS - 1))) { // Update rewards per block tCurrentPhase++; tRewardPerBlockForStaking = stakingPeriod[tCurrentPhase].rewardPerBlockForStaking; tRewardPerBlockForOthers = stakingPeriod[tCurrentPhase].rewardPerBlockForOthers; uint256 previousEndBlock = tEndBlock; // Adjust the end block tEndBlock += stakingPeriod[tCurrentPhase].periodLengthInBlock; // Adjust multiplier to cover the missing periods with other lower inflation schedule uint256 newMultiplier = _getMultiplier(previousEndBlock, block.number, tEndBlock); // Adjust token rewards tokenRewardForStaking += (newMultiplier * tRewardPerBlockForStaking); tokenRewardForOthers += (newMultiplier * tRewardPerBlockForOthers); } return (tokenRewardForStaking, tokenRewardForOthers); } function getPendingStakingRewards() external view returns (uint256) { if (block.number <= lastRewardBlock) { return 0; } uint256 multiplier = block.number - lastRewardBlock; return multiplier * rewardPerBlockForStaking; } /** * @notice Update rewards per block * @dev Rewards are halved by 2 (for staking + others) */ function _updateRewardsPerBlock(uint256 _newStartBlock) internal { // Update current phase currentPhase++; // Update rewards per block rewardPerBlockForStaking = stakingPeriod[currentPhase].rewardPerBlockForStaking; rewardPerBlockForOthers = stakingPeriod[currentPhase].rewardPerBlockForOthers; emit NewRewardsPerBlock( currentPhase, _newStartBlock, rewardPerBlockForStaking, rewardPerBlockForOthers ); } /** * @notice Return reward multiplier over the given "from" to "to" block. * @param from block to start calculating reward * @param to block to finish calculating reward * @return the multiplier for the period */ function _getMultiplier( uint256 from, uint256 to, uint256 tEndBlock ) internal pure returns (uint256) { if (to <= tEndBlock) { return to - from; } else if (from >= tEndBlock) { return 0; } else { return tEndBlock - from; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol"; import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import {IERC20, SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; contract FeeDistributor is Ownable, ReentrancyGuard { using SafeERC20 for IERC20; uint256 public TOTAL_SHARES; IERC20 public wcroToken; address public treasury; address public mintedBoost; uint256 public treasuryShares; uint256 public mintedBoostShares; uint256 public periodEndBlock; uint256 public rewardDurationInBlocks; uint256 public currentRewardsPerBlock; uint256 public lastUpdatedBlock; event UpdateTreasury(address _newTreasury, address _oldTreasury); event UpdateMintedBoost(address _newMintedBoost, address _oldMintedBoost); event UpdateShares(uint256 treasuryShares, uint256 mintedBoostShares); event SetupMintedBoost(address mintedBoost); /** * @notice Constructor * @dev this contract is a fee receipient to minted exchange rewards * @dev It handles the wcro fee distribution * @dev accumlated rewards are distributed per block over a period * @param _mintedBoostShares percentage shares of mintedBoost * @param _treasuryShares percentage shares of treasury * @param _rewardDurationInBlocks duration of each reward round */ constructor( address _wcroToken, uint256 _mintedBoostShares, address _treasury, uint256 _treasuryShares, uint256 _rewardDurationInBlocks ) { require(_treasuryShares > 0, "FeeDistributor: treasuryShares is 0"); require(_mintedBoostShares > 0, "FeeDistributor: mintedBoostShares is 0"); require(_rewardDurationInBlocks > 0, "FeeDistributor: rewardDurationInBlocks is 0"); wcroToken = IERC20(_wcroToken); treasury = _treasury; treasuryShares = _treasuryShares; mintedBoostShares = _mintedBoostShares; rewardDurationInBlocks = _rewardDurationInBlocks; periodEndBlock = block.number + rewardDurationInBlocks; lastUpdatedBlock = block.number; TOTAL_SHARES = _treasuryShares + _mintedBoostShares; } function updateTreasury(address _newTreasury) external onlyOwner { require(_newTreasury != address(0), "Invalid address"); require(_newTreasury != treasury, "treasury already exist"); address _oldTreasury = treasury; treasury = _newTreasury; emit UpdateTreasury(_newTreasury, _oldTreasury); } function updateMintedBoost(address _newMintedBoost) external onlyOwner { require(_newMintedBoost != address(0), "Invalid address"); require(_newMintedBoost != mintedBoost, "mintedBoost already exist"); address _oldmintedBoost = mintedBoost; mintedBoost = _newMintedBoost; emit UpdateMintedBoost(_newMintedBoost, _oldmintedBoost); } function updateShares(uint256 _treasuryShares, uint256 _mintedBoostShares) external onlyOwner { require(_treasuryShares > 0, "FeeDistributor: treasuryShares is 0"); require(_mintedBoostShares > 0, "FeeDistributor: mintedBoostShares is 0"); treasuryShares = _treasuryShares; mintedBoostShares = _mintedBoostShares; TOTAL_SHARES = _treasuryShares + _mintedBoostShares; emit UpdateShares(treasuryShares, mintedBoostShares); } function updateRewards() external nonReentrant { _updateRewards(); } function _updateRewards() internal { require(mintedBoost != address(0), "FeeDistributor: mintedBoost doesn't exist"); if (block.number <= periodEndBlock) { _releaseTradingRewards(); } else { // block.number > periodEndBlock implies end of the perious reward round and start of the new // to accomdate we distributed pending rewards of previous round, // sets the new reward round and distribute the rewards of current reward round _releaseTradingRewards(); _updateRewardPerBlock(); _releaseTradingRewards(); } } /** * @notice send wcro reward to MintedBoost * @dev this only send the wcro reward for this period, call _updateRewardPerBlock to update to next period */ function _releaseTradingRewards() internal { // limits the rewards to the current reward round wrt _lastUpdatedBlock (uint256 multiplier, uint256 _lastUpdatedBlock) = _getMultiplier(); if (currentRewardsPerBlock > 0) { uint256 amountToTransfer = multiplier * currentRewardsPerBlock; wcroToken.safeTransfer(mintedBoost, amountToTransfer); } lastUpdatedBlock = _lastUpdatedBlock; } /** * @notice starts new reward round, splits the accumlated rewards and send treasury reward share upfront sets the currentRewardsPerBlock for the new reward round */ function _updateRewardPerBlock() internal { if (block.number > periodEndBlock) { (uint256 tradingRewards, uint256 treasuryRewards) = getRewardShares(); periodEndBlock = block.number + rewardDurationInBlocks; // for gas saving reason, when tradingRewards > 0, treasuryReward will be > 0 if (tradingRewards > 0) { wcroToken.safeTransfer(treasury, treasuryRewards); // reward duration = lapsed period from lastUpdatedBlock + rewardDurationInBlocks currentRewardsPerBlock = (tradingRewards / (periodEndBlock - lastUpdatedBlock)); } else { currentRewardsPerBlock = 0; } } } /** * @return rewards between MintedBoost and treasury */ function getRewardShares() public view returns (uint256, uint256) { uint256 rewards = wcroToken.balanceOf(address(this)); uint256 tradingRewards = (rewards * mintedBoostShares) / TOTAL_SHARES; uint256 treasuryRewards = rewards - tradingRewards; return (tradingRewards, treasuryRewards); } /** * @return pending wcro reward for MintedBoost */ function getPendingRewards() external view returns (uint256) { if (mintedBoost == address(0)) { return 0; } if (block.number <= periodEndBlock) { (uint256 multiplier, ) = _getMultiplier(); return multiplier * currentRewardsPerBlock; } else { // calculate current round reward (uint256 multiplier, ) = _getMultiplier(); uint256 pendingRewardsForCurrentRound = multiplier * currentRewardsPerBlock; // calculate next round reward uint256 rewards = wcroToken.balanceOf(address(this)) - pendingRewardsForCurrentRound; uint256 tradingRewards = (rewards * mintedBoostShares) / TOTAL_SHARES; uint256 nextPeriodEndBlock = block.number + rewardDurationInBlocks; uint256 nextRewardPerBlock = (tradingRewards / (nextPeriodEndBlock - periodEndBlock)); uint256 pendingRewardsForNextRound = (block.number - periodEndBlock) * nextRewardPerBlock; return pendingRewardsForCurrentRound + pendingRewardsForNextRound; } } function _getMultiplier() internal view returns (uint256, uint256) { if (block.number <= periodEndBlock) { return (block.number - lastUpdatedBlock, block.number); } else { // considers only pending rewards in previous round return (periodEndBlock - lastUpdatedBlock, periodEndBlock); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @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 (last updated v4.5.0) (interfaces/draft-IERC1822.sol) pragma solidity ^0.8.0; /** * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified * proxy whose upgrades are fully controlled by the current implementation. */ interface IERC1822ProxiableUpgradeable { /** * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation * address. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. */ function proxiableUUID() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol) pragma solidity ^0.8.2; import "../beacon/IBeaconUpgradeable.sol"; import "../../interfaces/draft-IERC1822Upgradeable.sol"; import "../../utils/AddressUpgradeable.sol"; import "../../utils/StorageSlotUpgradeable.sol"; import "../utils/Initializable.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ * * @custom:oz-upgrades-unsafe-allow delegatecall */ abstract contract ERC1967UpgradeUpgradeable is Initializable { function __ERC1967Upgrade_init() internal onlyInitializing { } function __ERC1967Upgrade_init_unchained() internal onlyInitializing { } // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Returns the current implementation address. */ function _getImplementation() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Perform implementation upgrade * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCall( address newImplementation, bytes memory data, bool forceCall ) internal { _upgradeTo(newImplementation); if (data.length > 0 || forceCall) { _functionDelegateCall(newImplementation, data); } } /** * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCallUUPS( address newImplementation, bytes memory data, bool forceCall ) internal { // Upgrades from old implementations will perform a rollback test. This test requires the new // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing // this special case will break upgrade paths from old UUPS implementation to new ones. if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) { _setImplementation(newImplementation); } else { try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) { require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID"); } catch { revert("ERC1967Upgrade: new implementation is not UUPS"); } _upgradeToAndCall(newImplementation, data, forceCall); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Returns the current admin. */ function _getAdmin() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. */ function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor. */ bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Emitted when the beacon is upgraded. */ event BeaconUpgraded(address indexed beacon); /** * @dev Returns the current beacon. */ function _getBeacon() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract"); require( AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon; } /** * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. */ function _upgradeBeaconToAndCall( address newBeacon, bytes memory data, bool forceCall ) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 || forceCall) { _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data); } } /** * @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) private returns (bytes memory) { require(AddressUpgradeable.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 AddressUpgradeable.verifyCallResult(success, returndata, "Address: low-level delegate call failed"); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeaconUpgradeable { /** * @dev Must return an address that can be used as a delegate call target. * * {BeaconProxy} will check that this address is a contract. */ function implementation() external view returns (address); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol) pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlotUpgradeable { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } }
// 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 IERC20PermitUpgradeable { /** * @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 "../IERC20Upgradeable.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20MetadataUpgradeable is IERC20Upgradeable { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IMintedToken is IERC20 { function SUPPLY_CAP() external view returns (uint256); function mint(address account, uint256 amount) external returns (bool); }
// 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 v4.4.1 (access/IAccessControlEnumerable.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; /** * @dev External interface of AccessControlEnumerable declared to support ERC165 detection. */ interface IAccessControlEnumerable is IAccessControl { /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) external view returns (address); /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @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. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet. * ==== */ 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; if (lastIndex != toDeleteIndex) { 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] = valueIndex; // Replace lastValue's index to valueIndex } // 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) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // 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); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // 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)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // 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)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pauseDistribution","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardSharesToStake","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardSharesToUser","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_newMintedBoost","type":"address"}],"name":"setMintedBoost","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakePoolInfo","outputs":[{"internalType":"uint256","name":"shares","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakePoolLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakedPids","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalClaimed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalReleased","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpauseDistribution","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardSharesToUser","type":"uint256"},{"internalType":"uint256","name":"_rewardSharesToStake","type":"uint256"},{"internalType":"uint256[]","name":"_pidsToStake","type":"uint256[]"},{"internalType":"uint256[]","name":"_stakeshares","type":"uint256[]"}],"name":"updateShareDistribution","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"merkleRoot","type":"bytes32"},{"internalType":"uint256","name":"newMaximumAmountPerUser","type":"uint256"}],"name":"updateTradingRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawTokenRewards","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _mintedToken (address): 0x0224010BA2d567ffa014222eD960D1fa43B8C8E1
Arg [1] : _rewardSharesToUser (uint256): 2500
Arg [2] : _rewardSharesToStake (uint256): 7500
Arg [3] : _pidsToStake (uint256[]): 0,1,2
Arg [4] : _stakeshares (uint256[]): 2500,2500,2500
-----Encoded View---------------
13 Constructor Arguments found :
Arg [0] : 0000000000000000000000000224010ba2d567ffa014222ed960d1fa43b8c8e1
Arg [1] : 00000000000000000000000000000000000000000000000000000000000009c4
Arg [2] : 0000000000000000000000000000000000000000000000000000000000001d4c
Arg [3] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [10] : 00000000000000000000000000000000000000000000000000000000000009c4
Arg [11] : 00000000000000000000000000000000000000000000000000000000000009c4
Arg [12] : 00000000000000000000000000000000000000000000000000000000000009c4
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Multichain Portfolio | 29 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
CRONOS | 100.00% | $0.025577 | 574,826.5437 | $14,702.46 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.