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| // | ||
| // | ||
| // █████╗ ███╗ ██╗ ██████╗ ████████╗██╗ ██╗███████╗██████╗ ██████╗ ██╗ ██████╗ ██████╗██╗ ██╗ | ||
| // ██╔══██╗████╗ ██║██╔═══██╗╚══██╔══╝██║ ██║██╔════╝██╔══██╗██╔══██╗██║ ██╔═══██╗██╔════╝██║ ██╔╝ | ||
| // ███████║██╔██╗ ██║██║ ██║ ██║ ███████║█████╗ ██████╔╝██████╔╝██║ ██║ ██║██║ █████╔╝ | ||
| // ██╔══██║██║╚██╗██║██║ ██║ ██║ ██╔══██║██╔══╝ ██╔══██╗██╔══██╗██║ ██║ ██║██║ ██╔═██╗ | ||
| // ██║ ██║██║ ╚████║╚██████╔╝ ██║ ██║ ██║███████╗██║ ██║██████╔╝███████╗╚██████╔╝╚██████╗██║ ██╗ | ||
| // ╚═╝ ╚═╝╚═╝ ╚═══╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝╚══════╝╚═╝ ╚═╝╚═════╝ ╚══════╝ ╚═════╝ ╚═════╝╚═╝ ╚═╝ | ||
| // | ||
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| /** | ||
| * @title KYCVerifier | ||
| * @author anotherblock Technical Team | ||
| * @notice anotherblock contract responsible for verifying signature validity | ||
| * | ||
| */ | ||
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| // SPDX-License-Identifier: MIT | ||
| pragma solidity ^0.8.18; | ||
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| /* Openzeppelin Contract */ | ||
| import {AccessControlUpgradeable} from "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol"; | ||
| import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; | ||
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| /* anotherblock Library */ | ||
| import {ABErrors} from "src/libraries/ABErrors.sol"; | ||
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| /* anotherblock Interfaces */ | ||
| import {IKYCVerifier} from "src/utils/IKYCVerifier.sol"; | ||
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| contract KYCVerifier is IKYCVerifier, AccessControlUpgradeable { | ||
| using ECDSA for bytes32; | ||
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| // _____ __ __ | ||
| // / ___// /_____ _/ /____ _____ | ||
| // \__ \/ __/ __ `/ __/ _ \/ ___/ | ||
| // ___/ / /_/ /_/ / /_/ __(__ ) | ||
| // /____/\__/\__,_/\__/\___/____/ | ||
|
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| /// @dev Default signer address | ||
| address public defaultSigner; | ||
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| /// @dev anotherblock Admin Role | ||
| bytes32 public constant AB_ADMIN_ROLE = keccak256("AB_ADMIN_ROLE"); | ||
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| /// @dev Storage gap used for future upgrades (30 * 32 bytes) | ||
| uint256[30] __gap; | ||
|
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| // ______ __ __ | ||
| // / ____/___ ____ _____/ /________ _______/ /_____ _____ | ||
| // / / / __ \/ __ \/ ___/ __/ ___/ / / / ___/ __/ __ \/ ___/ | ||
| // / /___/ /_/ / / / (__ ) /_/ / / /_/ / /__/ /_/ /_/ / / | ||
| // \____/\____/_/ /_/____/\__/_/ \__,_/\___/\__/\____/_/ | ||
|
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| /** | ||
| * @notice | ||
| * Contract Constructor | ||
| */ | ||
| /// @custom:oz-upgrades-unsafe-allow constructor | ||
| constructor() { | ||
| _disableInitializers(); | ||
| } | ||
|
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| /** | ||
| * @notice | ||
| * Contract Initializer | ||
| * | ||
| * @param _defaultSigner allowlist generator signer | ||
| * | ||
| */ | ||
| function initialize(address _defaultSigner) external initializer { | ||
| if (_defaultSigner == address(0)) revert ABErrors.INVALID_PARAMETER(); | ||
| defaultSigner = _defaultSigner; | ||
|
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| // Initialize Access Control | ||
| __AccessControl_init(); | ||
| _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); | ||
| } | ||
|
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| // ______ __ __ ______ __ _ | ||
| // / ____/ __/ /____ _________ ____ _/ / / ____/_ ______ _____/ /_(_)___ ____ _____ | ||
| // / __/ | |/_/ __/ _ \/ ___/ __ \/ __ `/ / / /_ / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/ | ||
| // / /____> </ /_/ __/ / / / / / /_/ / / / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__ ) | ||
| // /_____/_/|_|\__/\___/_/ /_/ /_/\__,_/_/ /_/ \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/ | ||
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| function beforeMint(address _to, bytes calldata _signature) external { | ||
| if (!_verifyKYC(_to, _signature)) revert ABErrors.INVALID_SIGNATURE(); | ||
| } | ||
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| function beforeRoyaltyMint(address _to, bytes calldata _signature) external { | ||
| if (!_verifyKYC(_to, _signature)) revert ABErrors.INVALID_SIGNATURE(); | ||
| } | ||
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| function beforeRoyaltyClaim(address _to, bytes calldata _signature) external { | ||
| if (!_verifyKYC(_to, _signature)) revert ABErrors.INVALID_SIGNATURE(); | ||
| } | ||
| // beforePubliserCreated() | ||
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| // beforeRoyaltyNftTransder() {} | ||
| // beforeTransfer() { | ||
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| // kyc.users.include(_to) | ||
| // } | ||
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| // ____ __ ___ __ _ | ||
| // / __ \____ / /_ __ / | ____/ /___ ___ (_)___ | ||
| // / / / / __ \/ / / / / / /| |/ __ / __ `__ \/ / __ \ | ||
| // / /_/ / / / / / /_/ / / ___ / /_/ / / / / / / / / / / | ||
| // \____/_/ /_/_/\__, / /_/ |_\__,_/_/ /_/ /_/_/_/ /_/ | ||
| // /____/ | ||
|
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| /** | ||
| * @notice | ||
| * Set the default allowlist signer address | ||
| * | ||
| * @param _defaultSigner : address signing the allowed user for a given drop / phase | ||
| */ | ||
| function setDefaultSigner(address _defaultSigner) external onlyRole(DEFAULT_ADMIN_ROLE) { | ||
| defaultSigner = _defaultSigner; | ||
| } | ||
|
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| // _ ___ ______ __ _ | ||
| // | | / (_)__ _ __ / ____/_ ______ _____/ /_(_)___ ____ _____ | ||
| // | | / / / _ \ | /| / / / /_ / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/ | ||
| // | |/ / / __/ |/ |/ / / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__ ) | ||
| // |___/_/\___/|__/|__/ /_/ \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/ | ||
|
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| /** | ||
| * @notice | ||
| * Get KYC signer | ||
| * | ||
| * @return _signer signer for the given `_collection` | ||
| */ | ||
| function getSigner() external view returns (address _signer) { | ||
| _signer = defaultSigner; | ||
| } | ||
|
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| /** | ||
| * @notice | ||
| * Return true if the user is allowlisted, false otherwise | ||
| * | ||
| * @param _user user address | ||
| * @param _signature signature generated by AB Backend and signed by AB Allowlist Signer | ||
| * | ||
| * @return _isValid boolean corresponding to the user's allowlist inclusion | ||
| */ | ||
| function _verifyKYC(address _user, bytes calldata _signature) internal view returns (bool _isValid) { | ||
| bytes32 digest = | ||
| keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", keccak256(abi.encodePacked(_user)))); | ||
| _isValid = defaultSigner == digest.recover(_signature); | ||
| } | ||
| } |