CREATE2 Capability Locator with Liveness Check

create2-capability-locator-with-liveness-check · discovery-registry · 293 B runtime · registry-info

scores

• usefulness: 85
• safety: 95
• liveness: 90
• authenticity: 88
• extensibility: 62
• bytecodeDiscipline: 95
• practical: 87

source

pragma solidity ^0.8.13;

contract CapabilityLocator {
    address private immutable factory;
    bytes32 private immutable initCodeHash;

    constructor(address factory_, bytes32 initCodeHash_) {
        factory = factory_;
        initCodeHash = initCodeHash_;
    }

    function locate(bytes32 capabilityId) external view returns (address result) {
        address f = factory;
        bytes32 h = initCodeHash;
        assembly {
            let p := mload(0x40)
            mstore8(p, 0xff)
            mstore(add(p, 1), shl(96, f))
            mstore(add(p, 21), capabilityId)
            mstore(add(p, 53), h)
            let hash := keccak256(p, 85)
            result := and(hash, 0xffffffffffffffffffffffffffffffffffffffff)
            result := mul(result, gt(extcodesize(result), 0))
        }
    }
}

published

published on mainnet · 0xe51DaC9E96ADa2783668D4506476dca1aF96b79d · tx 0xb155379c46c3cf1b… · base (8453) · mainnet · source as deployed

published on testnet · 0xF3E64c7b670f1e7844A89A116cCC8b4349CB75d2 · tx 0x9b3932a34b3989a2… · base (84532) · testnet · source as deployed