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Claim Request | 21811903 | 3 days ago | IN | 0 ETH | 0.00019807 | ||||
Claim Request | 21806155 | 4 days ago | IN | 0 ETH | 0.00025108 | ||||
Claim Request | 21801643 | 4 days ago | IN | 0 ETH | 0.00030453 | ||||
Claim Request | 21801542 | 4 days ago | IN | 0 ETH | 0.0000695 | ||||
Claim Request | 21800735 | 4 days ago | IN | 0 ETH | 0.00005407 | ||||
Claim Request | 21795819 | 5 days ago | IN | 0 ETH | 0.00027793 | ||||
Claim Request | 21794970 | 5 days ago | IN | 0 ETH | 0.00029119 | ||||
Claim Request | 21786338 | 6 days ago | IN | 0 ETH | 0.00025499 | ||||
Claim Request | 21779025 | 7 days ago | IN | 0 ETH | 0.00027264 | ||||
Claim Request | 21772856 | 8 days ago | IN | 0 ETH | 0.00035437 | ||||
Claim Request | 21730630 | 14 days ago | IN | 0 ETH | 0.00038703 | ||||
Claim Request | 21712497 | 17 days ago | IN | 0 ETH | 0.00066743 | ||||
Claim Request | 21707688 | 17 days ago | IN | 0 ETH | 0.00045622 | ||||
Claim Request | 21690565 | 20 days ago | IN | 0 ETH | 0.00069249 | ||||
Claim Request | 21688084 | 20 days ago | IN | 0 ETH | 0.00183143 | ||||
Claim Request | 21666394 | 23 days ago | IN | 0 ETH | 0.00237123 | ||||
Claim Request | 21665987 | 23 days ago | IN | 0 ETH | 0.00158693 | ||||
Claim Request | 21665484 | 23 days ago | IN | 0 ETH | 0.00173486 | ||||
Claim Request | 21662791 | 24 days ago | IN | 0 ETH | 0.00271343 | ||||
Claim Request | 21660413 | 24 days ago | IN | 0 ETH | 0.00191124 | ||||
Claim Request | 21652273 | 25 days ago | IN | 0 ETH | 0.00170364 | ||||
Claim Request | 21649574 | 25 days ago | IN | 0 ETH | 0.00164155 | ||||
Claim Request | 21647971 | 26 days ago | IN | 0 ETH | 0.00037338 | ||||
Claim Request | 21647789 | 26 days ago | IN | 0 ETH | 0.00053647 | ||||
Claim Request | 21642439 | 26 days ago | IN | 0 ETH | 0.00046776 |
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Contract Source Code Verified (Exact Match)
Contract Name:
Claiming
Compiler Version
v0.8.25+commit.b61c2a91
Optimization Enabled:
Yes with 1000000 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.25; import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { ClaimingErrors } from "./interfaces/Errors.sol"; import { IClaiming } from "./interfaces/IClaiming.sol"; import { IStaking } from "./interfaces/IStaking.sol"; /** * @title Gems unstake Claiming contract. * @author Gems team. * @notice Allows Gems tokens to be claimed after an unstake request has been * requested. */ contract Claiming is ReentrancyGuard, ClaimingErrors, IClaiming { using EnumerableSet for EnumerableSet.Bytes32Set; using SafeERC20 for IERC20; /* ========== STATE VARIABLES ========== */ /// @dev Seven days time in seconds. uint256 private constant _SEVEN_DAYS_TIME = 7 days; /// @notice Address of the Gems token contract. IERC20 public immutable GEMS_TOKEN; /// @notice Address of the Staking contract. IStaking public immutable STAKING; /// @notice Number of request keys currently assigned. uint256 public totalRequests; /// @notice Unique key with respect to a unique request index. EnumerableSet.Bytes32Set private _requestKeys; /// @dev Claimer's claim request with respect to a unique key. mapping(bytes32 key => Request request) public requests; /* ========== STRUCTS ========== */ struct Request { uint256 amount; /// @dev Time after which the claim request will be complete. uint256 claimRequestTime; } /* ========== EVENTS ========== */ /// @dev Emitted when a claim request has been set. event RequestSet(address indexed claimer, uint256 index, uint256 amount, uint256 claimRequestTime); /// @dev Emitted when a claim request has been claimed. event RequestClaimed(address indexed claimer, uint256 index); /// @dev Emitted when multiple claim requests have been claimed. event MultipleRequestsClaimed(address indexed claimer, uint256[] indexes); /* ========== CONSTRUCTOR ========== */ /** * @dev Constructor. * @param initGemsToken Address of the Gems token contract. * @param initStaking Address of the Staking contract. */ constructor(IERC20 initGemsToken, IStaking initStaking) { if (address(initGemsToken) == address(0) || address(initStaking) == address(0)) { revert InvalidAddress(); } GEMS_TOKEN = initGemsToken; STAKING = initStaking; } /* ========== FUNCTIONS ========== */ /** * @inheritdoc IClaiming */ function setRequest(address claimer, uint256 amount) external nonReentrant { if (msg.sender != address(STAKING)) { revert ClaimingUnauthorizedAccount(msg.sender); } if (claimer == address(0)) { revert InvalidAddress(); } if (amount == 0) { revert InvalidAmount(); } uint256 index = totalRequests++; bytes32 key = _generateKey(claimer, index); _requestKeys.add(key); uint256 claimRequestTime = block.timestamp + _SEVEN_DAYS_TIME; requests[key] = Request({ amount: amount, claimRequestTime: claimRequestTime }); GEMS_TOKEN.safeTransferFrom(address(STAKING), address(this), amount); emit RequestSet({ claimer: claimer, index: index, amount: amount, claimRequestTime: claimRequestTime }); } /** * @inheritdoc IClaiming */ function claimRequest(uint256 index) external nonReentrant { GEMS_TOKEN.safeTransfer(msg.sender, _claimRequest(index)); emit RequestClaimed({ claimer: msg.sender, index: index }); } /** * @inheritdoc IClaiming */ function claimMultipleRequests(uint256[] calldata indexes) external nonReentrant { uint256 indexesLength = indexes.length; if (indexesLength == 0) { revert ZeroLengthArray(); } uint256 totalRequestAmount; for (uint256 i; i < indexesLength; ++i) { totalRequestAmount += _claimRequest(indexes[i]); } GEMS_TOKEN.safeTransfer(msg.sender, totalRequestAmount); emit MultipleRequestsClaimed({ claimer: msg.sender, indexes: indexes }); } /** * @inheritdoc IClaiming */ function getRequest(uint256 index) external view returns (uint256, uint256) { Request memory request = requests[_requestKeys.at(index)]; return (request.amount, request.claimRequestTime); } /** * @inheritdoc IClaiming */ function getRequestKey(uint256 index) external view returns (bytes32) { return _requestKeys.at(index); } /** * @dev Implements logic for a completed claim request. DOES NOT transfer * claimable Gems tokens. * @return requestAmount Amount of Gems tokens in the claim request that * need to be processed. */ function _claimRequest(uint256 index) private returns (uint256) { bytes32 key = _generateKey(msg.sender, index); Request memory request = requests[key]; if (request.amount == 0) { revert InvalidClaimRequest(); } if (block.timestamp < request.claimRequestTime) { revert ClaimRequestTimeNotReached(); } _requestKeys.remove(key); delete requests[key]; return request.amount; } /** * @notice Creates a unique key pertaining to the caller and the given * unique request index. * @param claimer Claimer who's tokens are being held. * @param index Request index to get the key for. * @return key Key that is present for the given request index. */ function _generateKey(address claimer, uint256 index) private pure returns (bytes32) { return keccak256(abi.encodePacked(claimer, index)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.20; /** * @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. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ 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]. * * CAUTION: See Security Considerations above. */ 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 v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` 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 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; import {IERC20Permit} from "../extensions/IERC20Permit.sol"; import {Address} from "../../../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; /** * @dev An operation with an ERC20 token failed. */ error SafeERC20FailedOperation(address token); /** * @dev Indicates a failed `decreaseAllowance` request. */ error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease); /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value))); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value))); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); forceApprove(token, spender, oldAllowance + value); } /** * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no * value, non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal { unchecked { uint256 currentAllowance = token.allowance(address(this), spender); if (currentAllowance < requestedDecrease) { revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease); } forceApprove(token, spender, currentAllowance - requestedDecrease); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value)); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0))); _callOptionalReturn(token, approvalCall); } } /** * @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); if (returndata.length != 0 && !abi.decode(returndata, (bool))) { revert SafeERC20FailedOperation(address(token)); } } /** * @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). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // 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 cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @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 or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * 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. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @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`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; /** * @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; /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); 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() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be NOT_ENTERED if (_status == ENTERED) { revert ReentrancyGuardReentrantCall(); } // Any calls to nonReentrant after this point will fail _status = ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.20; /** * @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. * * ```solidity * 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 is the index of the value in the `values` array plus 1. // Position 0 is used to mean a value is not in the set. mapping(bytes32 value => uint256) _positions; } /** * @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._positions[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 cache the value's position to prevent multiple reads from the same storage slot uint256 position = set._positions[value]; if (position != 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 valueIndex = position - 1; uint256 lastIndex = set._values.length - 1; if (valueIndex != lastIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the lastValue to the index where the value to delete is set._values[valueIndex] = lastValue; // Update the tracked position of the lastValue (that was just moved) set._positions[lastValue] = position; } // Delete the slot where the moved value was stored set._values.pop(); // Delete the tracked position for the deleted slot delete set._positions[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._positions[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) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // 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 in 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 pragma solidity 0.8.25; /** * @title Generic errors. * @author Gems team. * @notice Errors being used in more than one contract. */ interface Errors { /** * @dev Indicates a failure with the given address, for example, * `address(0)`. */ error InvalidAddress(); /** * @dev Indicates an error related to the given amount, for example, `0`. */ error InvalidAmount(); /** * @dev Indicates an error if the variable being assigned is identical to * the old variable. */ error IdenticalVariableAssignment(); } /** * @title Staking errors. * @author Gems team. * @notice Errors being used only in the Staking contract. */ interface StakingErrors is Errors { /** * @dev Indicates an error related to ``staker``'s unstake request when the * amount of tokens staked is less than the `amount` requested to unstake. */ error InvalidRequestUnstake(address staker, uint256 amount); /** * @dev Indicates an error related to staker's claim when the claim time * has not yet passed. */ error ClaimTimeNotReached(); /** * @dev Indicates an error related to staker's claim when there is no * amount of Gems token rewards to claim. */ error NoRewardToClaim(); } /** * @title Claiming errors. * @author Gems team. * @notice Errors being used only in the Claiming contract. */ interface ClaimingErrors is Errors { /** * @dev Indicates an error when the caller, `account`, is not authorized. */ error ClaimingUnauthorizedAccount(address account); /** * @dev Indicates an error related to claimer's claim request when the * claim request time has not yet passed. */ error ClaimRequestTimeNotReached(); /** * @dev Indicates an error related to claimer's claim request when the * amount of tokens in the request is `0`. */ error InvalidClaimRequest(); /** * @dev Indicates a failure with the given array's length, i.e. array's * length is `0`. */ error ZeroLengthArray(); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.25; /** * @title Claiming contract interface. * @author Gems team. * @notice Interface for the Claiming contract. */ interface IClaiming { /* ========== FUNCTIONS ========== */ /** * @notice Set a request to claim Gems tokens being unstaked from the Staking * contract. Only `staking` can call this function. * @param claimer Claimer who's Gems tokens are being held. * @param amount Amount of Gems tokens being unstaked. */ function setRequest(address claimer, uint256 amount) external; /** * @notice Claim Gems tokens following the completion of a claim request. * @param index Claimer's index to claim request against. */ function claimRequest(uint256 index) external; /** * @notice Claim Gems tokens following the completion of multiple claim * requests. * @param indexes List of claimer indexes to claim requests against. */ function claimMultipleRequests(uint256[] calldata indexes) external; /** * @notice Gives the request pertaining to the given unique request index. * @param index Request index to get the key for. * @return amount Amount of Gems tokens requested. * @return claimRequestTime Time after which requested Gems tokens will be * claimable. */ function getRequest(uint256 index) external view returns (uint256, uint256); /** * @notice Gives a unique key pertaining to the given unique request index. * @param index Request index to get the key for. * @return key Key that is present for the given request index. */ function getRequestKey(uint256 index) external view returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.25; import { IClaiming } from "./IClaiming.sol"; /** * @title Staking contract interface. * @author Gems team. * @notice Interface for the Staking contract. */ interface IStaking { /* ========== FUNCTIONS ========== */ /** * @notice Stake Gems tokens to earn rewards. Resets reward claim time. * CANNOT be called when paused. * @param amount Amount of Gems tokens to stake. */ function stake(uint256 amount) external; /** * @notice Submit a request to unstake your Gems tokens. * @dev Performs necessary checks on staker's stake and transfers unstaked * tokens to the Claim contract for further processing. */ function requestUnstake(uint256 amount) external; /** * @notice Claim Gems token rewards. CANNOT be called when claim time is not * reached. */ function claim() external; /** * @notice Claim and restake Gems token rewards. CAN be called when claim * time is not reached. Resets reward claim time. CANNOT be called when * paused. */ function claimAndRestake() external; /** * @notice Updates the Gems token rewards wallet. Only `owner` can call this * function. * @param newRewardWallet Address of the new Gems token rewards wallet. */ function updateRewardWallet(address newRewardWallet) external; /** * @notice Updates the Claiming contract. Only `owner` can call this * function. * @param newClaiming Address of the mew Claiming contract. */ function updateClaiming(IClaiming newClaiming) external; /** * @notice Change the state of the contract from unpaused to paused. Only * `owner` can call this function. */ function pause() external; /** * @notice Change the state of the contract from paused to unpaused. Only * `owner` can call this function. */ function unpause() external; /** * @notice Gives the last reward time where reward is calculable. * @return lastTimeReward Time until Gems token rewards should be * calculated. */ function lastTimeRewardApplicable() external view returns (uint256); /** * @notice Gives the accumulated reward per Gems token staked. * @return rewardPerTokenStored Accumulated Gems token rewards per * individual Gems token staked. */ function rewardPerToken() external view returns (uint256); /** * @notice Gives the Gems token reward for a given staker. * @param staker Staker to get reward for. * @return rewards Rewards calculated for the given staker. */ function getReward(address staker) external view returns (uint256); }
{ "viaIR": true, "optimizer": { "enabled": true, "runs": 1000000 }, "evmVersion": "paris", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract IERC20","name":"initGemsToken","type":"address"},{"internalType":"contract IStaking","name":"initStaking","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"ClaimRequestTimeNotReached","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"ClaimingUnauthorizedAccount","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"IdenticalVariableAssignment","type":"error"},{"inputs":[],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[],"name":"InvalidClaimRequest","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"ZeroLengthArray","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"claimer","type":"address"},{"indexed":false,"internalType":"uint256[]","name":"indexes","type":"uint256[]"}],"name":"MultipleRequestsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"claimer","type":"address"},{"indexed":false,"internalType":"uint256","name":"index","type":"uint256"}],"name":"RequestClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"claimer","type":"address"},{"indexed":false,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"claimRequestTime","type":"uint256"}],"name":"RequestSet","type":"event"},{"inputs":[],"name":"GEMS_TOKEN","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"STAKING","outputs":[{"internalType":"contract IStaking","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"indexes","type":"uint256[]"}],"name":"claimMultipleRequests","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"claimRequest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRequest","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRequestKey","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"key","type":"bytes32"}],"name":"requests","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"claimRequestTime","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"claimer","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"setRequest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalRequests","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000003010ccb5419f1ef26d40a7cd3f0d707a0fa127dc00000000000000000000000003b830791ebb7c70c47936a57cdf02d13ff41168
-----Decoded View---------------
Arg [0] : initGemsToken (address): 0x3010ccb5419F1EF26D40a7cd3F0d707a0fa127Dc
Arg [1] : initStaking (address): 0x03B830791ebb7c70C47936A57cDf02D13ff41168
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000003010ccb5419f1ef26d40a7cd3f0d707a0fa127dc
Arg [1] : 00000000000000000000000003b830791ebb7c70c47936a57cdf02d13ff41168
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $0.04023 | 281,257.5891 | $11,314.97 |
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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.