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Latest 25 from a total of 342,799 transactions
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Claim Tokens | 60221529 | 53 secs ago | IN | 0 MATIC | 0.00542422 | ||||
Claim Tokens | 60221528 | 55 secs ago | IN | 0 MATIC | 0.00755267 | ||||
Claim Tokens | 60221520 | 1 min ago | IN | 0 MATIC | 0.00500675 | ||||
Claim Tokens | 60221520 | 1 min ago | IN | 0 MATIC | 0.00558844 | ||||
Claim Tokens | 60221520 | 1 min ago | IN | 0 MATIC | 0.00663357 | ||||
Claim Tokens | 60221519 | 1 min ago | IN | 0 MATIC | 0.00506695 | ||||
Claim Tokens | 60221517 | 1 min ago | IN | 0 MATIC | 0.00643587 | ||||
Claim Tokens | 60221516 | 1 min ago | IN | 0 MATIC | 0.00526872 | ||||
Claim Tokens | 60221515 | 1 min ago | IN | 0 MATIC | 0.00536834 | ||||
Claim Tokens | 60221513 | 1 min ago | IN | 0 MATIC | 0.00693102 | ||||
Claim Tokens | 60221505 | 1 min ago | IN | 0 MATIC | 0.00626133 | ||||
Claim Tokens | 60221500 | 1 min ago | IN | 0 MATIC | 0.00557525 | ||||
Claim Tokens | 60221500 | 1 min ago | IN | 0 MATIC | 0.00580741 | ||||
Claim Tokens | 60221493 | 2 mins ago | IN | 0 MATIC | 0.01307166 | ||||
Claim Tokens | 60221488 | 2 mins ago | IN | 0 MATIC | 0.00534445 | ||||
Claim Tokens | 60221480 | 2 mins ago | IN | 0 MATIC | 0.005258 | ||||
Claim Tokens | 60221479 | 2 mins ago | IN | 0 MATIC | 0.00518385 | ||||
Claim Tokens | 60221477 | 2 mins ago | IN | 0 MATIC | 0.00504356 | ||||
Claim Tokens | 60221477 | 2 mins ago | IN | 0 MATIC | 0.005048 | ||||
Claim Tokens | 60221474 | 2 mins ago | IN | 0 MATIC | 0.00501638 | ||||
Claim Tokens | 60221472 | 2 mins ago | IN | 0 MATIC | 0.00503314 | ||||
Claim Tokens | 60221472 | 2 mins ago | IN | 0 MATIC | 0.00594755 | ||||
Claim Tokens | 60221463 | 3 mins ago | IN | 0 MATIC | 0.00686879 | ||||
Claim Tokens | 60221460 | 3 mins ago | IN | 0 MATIC | 0.00565649 | ||||
Claim Tokens | 60221457 | 3 mins ago | IN | 0 MATIC | 0.00549317 |
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Contract Name:
TokenClaim
Compiler Version
v0.8.17+commit.8df45f5f
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; import {IORBNFT} from "./interface/IORBNFT.sol"; import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import {AccessControlStorage} from "@animoca/ethereum-contracts/contracts/access/libraries/AccessControlStorage.sol"; import {Pause, PauseStorage, ContractOwnership} from "@animoca/ethereum-contracts/contracts/lifecycle/Pause.sol"; import {ContractOwnershipStorage} from "@animoca/ethereum-contracts/contracts/access/libraries/ContractOwnershipStorage.sol"; import {TokenRecovery} from "@animoca/ethereum-contracts/contracts/security/TokenRecovery.sol"; /// @title TokenClaim Contract /// @notice Allows users to claim tokens based on a signature verification process. contract TokenClaim is Pause, TokenRecovery { using ECDSA for bytes32; using PauseStorage for PauseStorage.Layout; using ContractOwnershipStorage for ContractOwnershipStorage.Layout; // underscore is added to prevent naming conflict with contract.signer (from hardhat) address public messageSigner; IORBNFT public immutable ORB_INVENTORY; mapping(address => uint256) private _nonces; event TokensClaimed(address to, uint256[] orbIds, uint256[] orbCount, uint256[] xp, uint256 nonce); event MessageSignerUpdated(address oldMessageSigner, address newMessageSigner); /// @notice Contract constructor. /// @param inventory_ The address of the OrbInventory contract. /// @param messageSigner_ The initial signer address. constructor(address inventory_, address messageSigner_) Pause(false) ContractOwnership(msg.sender) { require(inventory_ != address(0), "TokenClaim: invalid inventory"); require(messageSigner_ != address(0), "TokenClaim: invalid signer"); ORB_INVENTORY = IORBNFT(inventory_); messageSigner = messageSigner_; emit MessageSignerUpdated(address(0), messageSigner_); } /// @notice Updates the signer address. /// @dev Only the contract owner can call this function. /// @param newMessageSigner The new signer address. function setMessageSigner(address newMessageSigner) external { ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender()); require(newMessageSigner != address(0), "TokenClaim: invalid signer"); emit MessageSignerUpdated(messageSigner, newMessageSigner); messageSigner = newMessageSigner; } /// @notice Gets the nonce for the specified user. /// @param user The user's address. /// @return The nonce value. function getNonce(address user) public view returns (uint256) { return _nonces[user]; } /// @notice Recovers the signer address from the provided parameters and signature. /// @param to The recipient address. /// @param orbIds The array of Orb IDs. /// @param xp The array of experience values. /// @param nonce The nonce value. /// @param orbCount The array of Orb count values. /// @param signature The signature to recover the signer from. /// @return The recovered signer address. function _recoverSigner( address to, uint256[] calldata orbIds, uint256[] calldata xp, uint256 nonce, uint256[] calldata orbCount, bytes calldata signature ) internal view returns (address) { bytes32 hash_ = keccak256(abi.encodePacked(to, orbIds, xp, nonce, orbCount, block.chainid)); return hash_.toEthSignedMessageHash().recover(signature); } /// @notice Claims tokens for the specified user. /// @dev ReentrancyGuard is used to prevent reentrancy attacks. /// @param to The recipient address. /// @param orbIds The array of Orb IDs. /// @param xp The array of experience values. /// @param orbCount The array of Orb count values. /// @param signature The signature for verification. function claimTokens(address to, uint256[] calldata orbIds, uint256[] calldata xp, uint256[] calldata orbCount, bytes calldata signature) public { PauseStorage.layout().enforceIsNotPaused(); uint256 nonce = _nonces[to]; require(_recoverSigner(to, orbIds, xp, nonce, orbCount, signature) == messageSigner, "TokenClaim: invalid signature"); _nonces[to]++; ORB_INVENTORY.safeBatchMint(to, orbIds, orbCount, ""); emit TokensClaimed(to, orbIds, orbCount, xp, nonce); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {ContractOwnershipStorage} from "./libraries/ContractOwnershipStorage.sol"; import {ContractOwnershipBase} from "./base/ContractOwnershipBase.sol"; import {InterfaceDetection} from "./../introspection/InterfaceDetection.sol"; /// @title ERC173 Contract Ownership Standard (immutable version). /// @dev See https://eips.ethereum.org/EIPS/eip-173 /// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation. abstract contract ContractOwnership is ContractOwnershipBase, InterfaceDetection { using ContractOwnershipStorage for ContractOwnershipStorage.Layout; /// @notice Initializes the storage with an initial contract owner. /// @notice Marks the following ERC165 interface(s) as supported: ERC173. /// @dev Emits an {OwnershipTransferred} if `initialOwner` is not the zero address. /// @param initialOwner the initial contract owner. constructor(address initialOwner) { ContractOwnershipStorage.layout().constructorInit(initialOwner); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC173} from "./../interfaces/IERC173.sol"; import {ContractOwnershipStorage} from "./../libraries/ContractOwnershipStorage.sol"; import {Context} from "@openzeppelin/contracts/utils/Context.sol"; /// @title ERC173 Contract Ownership Standard (proxiable version). /// @dev See https://eips.ethereum.org/EIPS/eip-173 /// @dev This contract is to be used via inheritance in a proxied implementation. /// @dev Note: This contract requires ERC165 (Interface Detection Standard). abstract contract ContractOwnershipBase is Context, IERC173 { using ContractOwnershipStorage for ContractOwnershipStorage.Layout; /// @inheritdoc IERC173 function owner() public view virtual override returns (address) { return ContractOwnershipStorage.layout().owner(); } /// @inheritdoc IERC173 function transferOwnership(address newOwner) public virtual override { ContractOwnershipStorage.layout().transferOwnership(_msgSender(), newOwner); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /// @title ERC-173 Contract Ownership Standard /// @dev See https://eips.ethereum.org/EIPS/eip-173 /// @dev Note: the ERC-165 identifier for this interface is 0x7f5828d0 interface IERC173 { /// @notice Emitted when the contract ownership changes. /// @param previousOwner the previous contract owner. /// @param newOwner the new contract owner. event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /// @notice Sets the address of the new contract owner. /// @dev Reverts if the sender is not the contract owner. /// @dev Emits an {OwnershipTransferred} event if `newOwner` is different from the current contract owner. /// @param newOwner The address of the new contract owner. Using the zero address means renouncing ownership. function transferOwnership(address newOwner) external; /// @notice Gets the address of the contract owner. /// @return contractOwner The address of the contract owner. function owner() external view returns (address contractOwner); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {Bytes32} from "./../../utils/libraries/Bytes32.sol"; library AccessControlStorage { using Bytes32 for bytes32; using AccessControlStorage for AccessControlStorage.Layout; struct Layout { mapping(bytes32 => mapping(address => bool)) roles; } bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.access.AccessControl.storage")) - 1); event RoleGranted(bytes32 role, address account, address operator); event RoleRevoked(bytes32 role, address account, address operator); /// @notice Grants a role to an account. /// @dev Note: Call to this function should be properly access controlled. /// @dev Emits a {RoleGranted} event if the account did not previously have the role. /// @param role The role to grant. /// @param account The account to grant the role to. /// @param operator The account requesting the role change. function grantRole(Layout storage s, bytes32 role, address account, address operator) internal { if (!s.hasRole(role, account)) { s.roles[role][account] = true; emit RoleGranted(role, account, operator); } } /// @notice Revokes a role from an account. /// @dev Note: Call to this function should be properly access controlled. /// @dev Emits a {RoleRevoked} event if the account previously had the role. /// @param role The role to revoke. /// @param account The account to revoke the role from. /// @param operator The account requesting the role change. function revokeRole(Layout storage s, bytes32 role, address account, address operator) internal { if (s.hasRole(role, account)) { s.roles[role][account] = false; emit RoleRevoked(role, account, operator); } } /// @notice Renounces a role by the sender. /// @dev Reverts if `sender` does not have `role`. /// @dev Emits a {RoleRevoked} event. /// @param sender The message sender. /// @param role The role to renounce. function renounceRole(Layout storage s, address sender, bytes32 role) internal { s.enforceHasRole(role, sender); s.roles[role][sender] = false; emit RoleRevoked(role, sender, sender); } /// @notice Retrieves whether an account has a role. /// @param role The role. /// @param account The account. /// @return whether `account` has `role`. function hasRole(Layout storage s, bytes32 role, address account) internal view returns (bool) { return s.roles[role][account]; } /// @notice Ensures that an account has a role. /// @dev Reverts if `account` does not have `role`. /// @param role The role. /// @param account The account. function enforceHasRole(Layout storage s, bytes32 role, address account) internal view { if (!s.hasRole(role, account)) { revert(string(abi.encodePacked("AccessControl: missing '", role.toASCIIString(), "' role"))); } } function layout() internal pure returns (Layout storage s) { bytes32 position = LAYOUT_STORAGE_SLOT; assembly { s.slot := position } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC173} from "./../interfaces/IERC173.sol"; import {ProxyInitialization} from "./../../proxy/libraries/ProxyInitialization.sol"; import {InterfaceDetectionStorage} from "./../../introspection/libraries/InterfaceDetectionStorage.sol"; library ContractOwnershipStorage { using ContractOwnershipStorage for ContractOwnershipStorage.Layout; using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout; struct Layout { address contractOwner; } bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.access.ContractOwnership.storage")) - 1); bytes32 internal constant PROXY_INIT_PHASE_SLOT = bytes32(uint256(keccak256("animoca.core.access.ContractOwnership.phase")) - 1); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /// @notice Initializes the storage with an initial contract owner (immutable version). /// @notice Marks the following ERC165 interface(s) as supported: ERC173. /// @dev Note: This function should be called ONLY in the constructor of an immutable (non-proxied) contract. /// @dev Emits an {OwnershipTransferred} if `initialOwner` is not the zero address. /// @param initialOwner The initial contract owner. function constructorInit(Layout storage s, address initialOwner) internal { if (initialOwner != address(0)) { s.contractOwner = initialOwner; emit OwnershipTransferred(address(0), initialOwner); } InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC173).interfaceId, true); } /// @notice Initializes the storage with an initial contract owner (proxied version). /// @notice Sets the proxy initialization phase to `1`. /// @notice Marks the following ERC165 interface(s) as supported: ERC173. /// @dev Note: This function should be called ONLY in the init function of a proxied contract. /// @dev Reverts if the proxy initialization phase is set to `1` or above. /// @dev Emits an {OwnershipTransferred} if `initialOwner` is not the zero address. /// @param initialOwner The initial contract owner. function proxyInit(Layout storage s, address initialOwner) internal { ProxyInitialization.setPhase(PROXY_INIT_PHASE_SLOT, 1); s.constructorInit(initialOwner); } /// @notice Sets the address of the new contract owner. /// @dev Reverts if `sender` is not the contract owner. /// @dev Emits an {OwnershipTransferred} event if `newOwner` is different from the current contract owner. /// @param newOwner The address of the new contract owner. Using the zero address means renouncing ownership. function transferOwnership(Layout storage s, address sender, address newOwner) internal { address previousOwner = s.contractOwner; require(sender == previousOwner, "Ownership: not the owner"); if (previousOwner != newOwner) { s.contractOwner = newOwner; emit OwnershipTransferred(previousOwner, newOwner); } } /// @notice Gets the address of the contract owner. /// @return contractOwner The address of the contract owner. function owner(Layout storage s) internal view returns (address contractOwner) { return s.contractOwner; } /// @notice Ensures that an account is the contract owner. /// @dev Reverts if `account` is not the contract owner. /// @param account The account. function enforceIsContractOwner(Layout storage s, address account) internal view { require(account == s.contractOwner, "Ownership: not the owner"); } function layout() internal pure returns (Layout storage s) { bytes32 position = LAYOUT_STORAGE_SLOT; assembly { s.slot := position } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC165} from "./interfaces/IERC165.sol"; import {InterfaceDetectionStorage} from "./libraries/InterfaceDetectionStorage.sol"; /// @title ERC165 Interface Detection Standard (immutable or proxiable version). /// @dev This contract is to be used via inheritance in an immutable (non-proxied) or proxied implementation. abstract contract InterfaceDetection is IERC165 { using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout; /// @inheritdoc IERC165 function supportsInterface(bytes4 interfaceId) external view override returns (bool) { return InterfaceDetectionStorage.layout().supportsInterface(interfaceId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /// @title ERC165 Interface Detection Standard. /// @dev See https://eips.ethereum.org/EIPS/eip-165. /// @dev Note: The ERC-165 identifier for this interface is 0x01ffc9a7. interface IERC165 { /// @notice Returns whether this contract implements a given interface. /// @dev Note: This function call must use less than 30 000 gas. /// @param interfaceId the interface identifier to test. /// @return supported True if the interface is supported, false if `interfaceId` is `0xffffffff` or if the interface is not supported. function supportsInterface(bytes4 interfaceId) external view returns (bool supported); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC165} from "./../interfaces/IERC165.sol"; library InterfaceDetectionStorage { struct Layout { mapping(bytes4 => bool) supportedInterfaces; } bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.introspection.InterfaceDetection.storage")) - 1); bytes4 internal constant ILLEGAL_INTERFACE_ID = 0xffffffff; /// @notice Sets or unsets an ERC165 interface. /// @dev Reverts if `interfaceId` is `0xffffffff`. /// @param interfaceId the interface identifier. /// @param supported True to set the interface, false to unset it. function setSupportedInterface(Layout storage s, bytes4 interfaceId, bool supported) internal { require(interfaceId != ILLEGAL_INTERFACE_ID, "InterfaceDetection: wrong value"); s.supportedInterfaces[interfaceId] = supported; } /// @notice Returns whether this contract implements a given interface. /// @dev Note: This function call must use less than 30 000 gas. /// @param interfaceId The interface identifier to test. /// @return supported True if the interface is supported, false if `interfaceId` is `0xffffffff` or if the interface is not supported. function supportsInterface(Layout storage s, bytes4 interfaceId) internal view returns (bool supported) { if (interfaceId == ILLEGAL_INTERFACE_ID) { return false; } if (interfaceId == type(IERC165).interfaceId) { return true; } return s.supportedInterfaces[interfaceId]; } function layout() internal pure returns (Layout storage s) { bytes32 position = LAYOUT_STORAGE_SLOT; assembly { s.slot := position } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {PauseStorage} from "./libraries/PauseStorage.sol"; import {PauseBase} from "./base/PauseBase.sol"; import {ContractOwnership} from "../access/ContractOwnership.sol"; /// @title Pausing mechanism (immutable version). /// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation. abstract contract Pause is PauseBase, ContractOwnership { using PauseStorage for PauseStorage.Layout; /// @notice Initializes the storage with an initial pause state. /// @dev Emits a {Paused} event if `isPaused` is true. /// @param isPaused The initial pause state. constructor(bool isPaused) { PauseStorage.layout().constructorInit(isPaused); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {PauseStorage} from "./../libraries/PauseStorage.sol"; import {ContractOwnershipStorage} from "./../../access/libraries/ContractOwnershipStorage.sol"; import {Context} from "@openzeppelin/contracts/utils/Context.sol"; /// @title Pausing mechanism (proxiable version). /// @dev This contract is to be used via inheritance in a proxied implementation. /// @dev Note: This contract requires ERC173 (Contract Ownership standard). abstract contract PauseBase is Context { using PauseStorage for PauseStorage.Layout; using ContractOwnershipStorage for ContractOwnershipStorage.Layout; /// @notice Emitted when the pause is triggered. event Paused(); /// @notice Emitted when the pause is lifted. event Unpaused(); /// @notice Pauses the contract. /// @dev Reverts if the sender is not the contract owner. /// @dev Reverts if the contract is paused. /// @dev Emits a {Paused} event. function pause() external { ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender()); PauseStorage.layout().pause(); } /// @notice Unpauses the contract. /// @dev Reverts if the sender is not the contract owner. /// @dev Reverts if the contract is not paused. /// @dev Emits an {Unpaused} event. function unpause() external { ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender()); PauseStorage.layout().unpause(); } /// @notice Gets the paused state of the contract. /// @return isPaused The paused state of the contract. function paused() external view returns (bool) { return PauseStorage.layout().paused(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {ProxyInitialization} from "./../../proxy/libraries/ProxyInitialization.sol"; library PauseStorage { using PauseStorage for PauseStorage.Layout; struct Layout { bool isPaused; } bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.lifecycle.Pause.storage")) - 1); bytes32 internal constant PROXY_INIT_PHASE_SLOT = bytes32(uint256(keccak256("animoca.core.lifecycle.Pause.phase")) - 1); event Paused(); event Unpaused(); /// @notice Initializes the storage with an initial pause state (immutable version). /// @dev Note: This function should be called ONLY in the constructor of an immutable (non-proxied) contract. /// @dev Emits a {Paused} event if `isPaused` is true. /// @param isPaused The initial pause state. function constructorInit(Layout storage s, bool isPaused) internal { if (isPaused) { s.isPaused = true; emit Paused(); } } /// @notice Initializes the storage with an initial pause state (proxied version). /// @notice Sets the proxy initialization phase to `1`. /// @dev Note: This function should be called ONLY in the init function of a proxied contract. /// @dev Reverts if the proxy initialization phase is set to `1` or above. /// @dev Emits a {Paused} event if `isPaused` is true. /// @param isPaused The initial pause state. function proxyInit(Layout storage s, bool isPaused) internal { ProxyInitialization.setPhase(PROXY_INIT_PHASE_SLOT, 1); s.constructorInit(isPaused); } /// @notice Pauses the contract. /// @dev Reverts if the contract is paused. /// @dev Emits a {Paused} event. function pause(Layout storage s) internal { s.enforceIsNotPaused(); s.isPaused = true; emit Paused(); } /// @notice Unpauses the contract. /// @dev Reverts if the contract is not paused. /// @dev Emits an {Unpaused} event. function unpause(Layout storage s) internal { s.enforceIsPaused(); s.isPaused = false; emit Unpaused(); } /// @notice Gets the paused state of the contract. /// @return isPaused The paused state of the contract. function paused(Layout storage s) internal view returns (bool isPaused) { return s.isPaused; } /// @notice Ensures that the contract is paused. /// @dev Reverts if the contract is not paused. function enforceIsPaused(Layout storage s) internal view { require(s.isPaused, "Pause: not paused"); } /// @notice Ensures that the contract is not paused. /// @dev Reverts if the contract is paused. function enforceIsNotPaused(Layout storage s) internal view { require(!s.isPaused, "Pause: paused"); } function layout() internal pure returns (Layout storage s) { bytes32 position = LAYOUT_STORAGE_SLOT; assembly { s.slot := position } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {StorageSlot} from "@openzeppelin/contracts/utils/StorageSlot.sol"; /// @notice Multiple calls protection for storage-modifying proxy initialization functions. library ProxyInitialization { /// @notice Sets the initialization phase during a storage-modifying proxy initialization function. /// @dev Reverts if `phase` has been reached already. /// @param storageSlot the storage slot where `phase` is stored. /// @param phase the initialization phase. function setPhase(bytes32 storageSlot, uint256 phase) internal { StorageSlot.Uint256Slot storage currentVersion = StorageSlot.getUint256Slot(storageSlot); require(currentVersion.value < phase, "Storage: phase reached"); currentVersion.value = phase; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {TokenRecoveryBase} from "./base/TokenRecoveryBase.sol"; import {ContractOwnership} from "./../access/ContractOwnership.sol"; /// @title Recovery mechanism for ETH/ERC20/ERC721 tokens accidentally sent to this contract (immutable version). /// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation. abstract contract TokenRecovery is TokenRecoveryBase, ContractOwnership { }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; import {IERC20} from "@openzeppelin/contracts/interfaces/IERC20.sol"; import {IERC721} from "./../../token/ERC721/interfaces/IERC721.sol"; import {ContractOwnershipStorage} from "./../../access/libraries/ContractOwnershipStorage.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {Context} from "@openzeppelin/contracts/utils/Context.sol"; import {Address} from "@openzeppelin/contracts/utils/Address.sol"; /// @title Recovery mechanism for ETH/ERC20/ERC721 tokens accidentally sent to this contract (proxiable version). /// @dev This contract is to be used via inheritance in a proxied implementation. /// @dev Note: This contract requires ERC173 (Contract Ownership standard). contract TokenRecoveryBase is Context { using ContractOwnershipStorage for ContractOwnershipStorage.Layout; using SafeERC20 for IERC20; using Address for address payable; /// @notice Extract ETH tokens which were accidentally sent to the contract to a list of accounts. /// @dev Note: While contracts can generally prevent accidental ETH transfer by implementating a reverting /// `receive()` function, this can still be bypassed in a `selfdestruct(address)` scenario. /// @dev Warning: this function should be overriden for contracts which are supposed to hold ETH tokens /// so that the extraction is limited to only amounts sent accidentally. /// @dev Reverts if the sender is not the contract owner. /// @dev Reverts if `accounts` and `amounts` do not have the same length. /// @dev Reverts if one of the ETH transfers fails for any reason. /// @param accounts the list of accounts to transfer the tokens to. /// @param amounts the list of token amounts to transfer. function recoverETH(address payable[] calldata accounts, uint256[] calldata amounts) external virtual { ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender()); uint256 length = accounts.length; require(length == amounts.length, "Recovery: inconsistent arrays"); unchecked { for (uint256 i; i != length; ++i) { accounts[i].sendValue(amounts[i]); } } } /// @notice Extract ERC20 tokens which were accidentally sent to the contract to a list of accounts. /// @dev Warning: this function should be overriden for contracts which are supposed to hold ERC20 tokens /// so that the extraction is limited to only amounts sent accidentally. /// @dev Reverts if the sender is not the contract owner. /// @dev Reverts if `accounts`, `tokens` and `amounts` do not have the same length. /// @dev Reverts if one of the ERC20 transfers fails for any reason. /// @param accounts the list of accounts to transfer the tokens to. /// @param tokens the list of ERC20 token addresses. /// @param amounts the list of token amounts to transfer. function recoverERC20s(address[] calldata accounts, IERC20[] calldata tokens, uint256[] calldata amounts) external virtual { ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender()); uint256 length = accounts.length; require(length == tokens.length && length == amounts.length, "Recovery: inconsistent arrays"); unchecked { for (uint256 i; i != length; ++i) { tokens[i].safeTransfer(accounts[i], amounts[i]); } } } /// @notice Extract ERC721 tokens which were accidentally sent to the contract to a list of accounts. /// @dev Warning: this function should be overriden for contracts which are supposed to hold ERC721 tokens /// so that the extraction is limited to only tokens sent accidentally. /// @dev Reverts if the sender is not the contract owner. /// @dev Reverts if `accounts`, `contracts` and `amounts` do not have the same length. /// @dev Reverts if one of the ERC721 transfers fails for any reason. /// @param accounts the list of accounts to transfer the tokens to. /// @param contracts the list of ERC721 contract addresses. /// @param tokenIds the list of token ids to transfer. function recoverERC721s(address[] calldata accounts, IERC721[] calldata contracts, uint256[] calldata tokenIds) external virtual { ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender()); uint256 length = accounts.length; require(length == contracts.length && length == tokenIds.length, "Recovery: inconsistent arrays"); unchecked { for (uint256 i; i != length; ++i) { contracts[i].transferFrom(address(this), accounts[i], tokenIds[i]); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; /// @title ERC721 Non-Fungible Token Standard, basic interface (functions). /// @dev See https://eips.ethereum.org/EIPS/eip-721 /// @dev This interface only contains the standard functions. See IERC721Events for the events. /// @dev Note: The ERC-165 identifier for this interface is 0x80ac58cd. interface IERC721 { /// @notice Sets or unsets an approval to transfer a single token on behalf of its owner. /// @dev Note: There can only be one approved address per token at a given time. /// @dev Note: A token approval gets reset when this token is transferred, including a self-transfer. /// @dev Reverts if `tokenId` does not exist. /// @dev Reverts if `to` is the token owner. /// @dev Reverts if the sender is not the token owner and has not been approved by the token owner. /// @dev Emits an {Approval} event. /// @param to The address to approve, or the zero address to remove any existing approval. /// @param tokenId The token identifier to give approval for. function approve(address to, uint256 tokenId) external; /// @notice Sets or unsets an approval to transfer all tokens on behalf of their owner. /// @dev Reverts if the sender is the same as `operator`. /// @dev Emits an {ApprovalForAll} event. /// @param operator The address to approve for all tokens. /// @param approved True to set an approval for all tokens, false to unset it. function setApprovalForAll(address operator, bool approved) external; /// @notice Unsafely transfers the ownership of a token to a recipient. /// @dev Note: Usage of this method is discouraged, use `safeTransferFrom` whenever possible. /// @dev Resets the token approval for `tokenId`. /// @dev Reverts if `to` is the zero address. /// @dev Reverts if `from` is not the owner of `tokenId`. /// @dev Reverts if the sender is not `from` and has not been approved by `from` for `tokenId`. /// @dev Emits a {Transfer} event. /// @param from The current token owner. /// @param to The recipient of the token transfer. Self-transfers are possible. /// @param tokenId The identifier of the token to transfer. function transferFrom(address from, address to, uint256 tokenId) external; /// @notice Safely transfers the ownership of a token to a recipient. /// @dev Resets the token approval for `tokenId`. /// @dev Reverts if `to` is the zero address. /// @dev Reverts if `from` is not the owner of `tokenId`. /// @dev Reverts if the sender is not `from` and has not been approved by `from` for `tokenId`. /// @dev Reverts if `to` is a contract and the call to {IERC721Receiver-onERC721Received} fails, reverts or is rejected. /// @dev Emits a {Transfer} event. /// @param from The current token owner. /// @param to The recipient of the token transfer. /// @param tokenId The identifier of the token to transfer. function safeTransferFrom(address from, address to, uint256 tokenId) external; /// @notice Safely transfers the ownership of a token to a recipient. /// @dev Resets the token approval for `tokenId`. /// @dev Reverts if `to` is the zero address. /// @dev Reverts if `from` is not the owner of `tokenId`. /// @dev Reverts if the sender is not `from` and has not been approved by `from` for `tokenId`. /// @dev Reverts if `to` is a contract and the call to {IERC721Receiver-onERC721Received} fails, reverts or is rejected. /// @dev Emits a {Transfer} event. /// @param from The current token owner. /// @param to The recipient of the token transfer. /// @param tokenId The identifier of the token to transfer. /// @param data Optional data to send along to a receiver contract. function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; /// @notice Gets the balance of an address. /// @dev Reverts if `owner` is the zero address. /// @param owner The address to query the balance of. /// @return balance The amount owned by the owner. function balanceOf(address owner) external view returns (uint256 balance); /// @notice Gets the owner of a token. /// @dev Reverts if `tokenId` does not exist. /// @param tokenId The token identifier to query the owner of. /// @return tokenOwner The owner of the token identifier. function ownerOf(uint256 tokenId) external view returns (address tokenOwner); /// @notice Gets the approved address for a token. /// @dev Reverts if `tokenId` does not exist. /// @param tokenId The token identifier to query the approval of. /// @return approved The approved address for the token identifier, or the zero address if no approval is set. function getApproved(uint256 tokenId) external view returns (address approved); /// @notice Gets whether an operator is approved for all tokens by an owner. /// @param owner The address which gives the approval for all tokens. /// @param operator The address which receives the approval for all tokens. /// @return approvedForAll Whether the operator is approved for all tokens by the owner. function isApprovedForAll(address owner, address operator) external view returns (bool approvedForAll); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.8; library Bytes32 { /// @notice Converts bytes32 to base32 string. /// @param value value to convert. /// @return the converted base32 string. function toBase32String(bytes32 value) internal pure returns (string memory) { unchecked { bytes32 base32Alphabet = 0x6162636465666768696A6B6C6D6E6F707172737475767778797A323334353637; uint256 i = uint256(value); uint256 k = 52; bytes memory bstr = new bytes(k); bstr[--k] = base32Alphabet[uint8((i % 8) << 2)]; // uint8 s = uint8((256 - skip) % 5); // (i % (2**s)) << (5-s) i /= 8; while (k > 0) { bstr[--k] = base32Alphabet[i % 32]; i /= 32; } return string(bstr); } } /// @notice Converts a bytes32 value to an ASCII string, trimming the tailing zeros. /// @param value value to convert. /// @return the converted ASCII string. function toASCIIString(bytes32 value) internal pure returns (string memory) { unchecked { if (value == 0x00) return ""; bytes memory bytesString = bytes(abi.encodePacked(value)); uint256 pos = 31; while (true) { if (bytesString[pos] != 0) break; --pos; } bytes memory asciiString = new bytes(pos + 1); for (uint256 i; i <= pos; ++i) { asciiString[i] = bytesString[i]; } return string(asciiString); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol) pragma solidity ^0.8.0; import "../token/ERC20/IERC20.sol";
// 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 v4.8.0) (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 // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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 StorageSlot { 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 (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _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) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @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] = _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 (last updated v4.8.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV // Deprecated in v4.8 } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.17; interface IORBNFT { function safeBatchMint(address to, uint256[] calldata ids, uint256[] calldata values, bytes calldata data) external; }
{ "evmVersion": "london", "libraries": {}, "metadata": { "bytecodeHash": "ipfs", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 99999 }, "remappings": [], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000473989bf6409d21f8a7fdd7133a40f9251cc183900000000000000000000000016948b047861b7c71a17c002065be893b232e21d
-----Decoded View---------------
Arg [0] : inventory_ (address): 0x473989BF6409D21f8A7Fdd7133a40F9251cC1839
Arg [1] : messageSigner_ (address): 0x16948B047861b7C71A17c002065bE893B232E21D
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000473989bf6409d21f8a7fdd7133a40f9251cc1839
Arg [1] : 00000000000000000000000016948b047861b7c71a17c002065be893b232e21d
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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.