Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Is this a proxy?
• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2023-08-09
*/

pragma solidity 0.6.6;


interface IERCProxy {
    function proxyType() external pure returns (uint256 proxyTypeId);

    function implementation() external view returns (address codeAddr);
}



abstract contract Proxy is IERCProxy {
    function delegatedFwd(address _dst, bytes memory _calldata) internal {
        // solium-disable-next-line security/no-inline-assembly
        assembly {
            let result := delegatecall(
                sub(gas(), 10000),
                _dst,
                add(_calldata, 0x20),
                mload(_calldata),
                0,
                0
            )
            let size := returndatasize()

            let ptr := mload(0x40)
            returndatacopy(ptr, 0, size)

            // revert instead of invalid() bc if the underlying call failed with invalid() it already wasted gas.
            // if the call returned error data, forward it
            switch result
                case 0 {
                    revert(ptr, size)
                }
                default {
                    return(ptr, size)
                }
        }
    }

    function proxyType() external virtual override pure returns (uint256 proxyTypeId) {
        // Upgradeable proxy
        proxyTypeId = 2;
    }

    function implementation() external virtual override view returns (address);
}



contract UpgradableProxy is Proxy {
    event ProxyUpdated(address indexed _new, address indexed _old);
    event ProxyOwnerUpdate(address _new, address _old);

    bytes32 constant IMPLEMENTATION_SLOT = keccak256("matic.network.proxy.implementation");
    bytes32 constant OWNER_SLOT = keccak256("matic.network.proxy.owner");

    constructor(address _proxyTo) public {
        setProxyOwner(msg.sender);
        setImplementation(_proxyTo);
    }

    fallback() external payable {
        delegatedFwd(loadImplementation(), msg.data);
    }

    receive() external payable {
        delegatedFwd(loadImplementation(), msg.data);
    }

    modifier onlyProxyOwner() {
        require(loadProxyOwner() == msg.sender, "NOT_OWNER");
        _;
    }

    function proxyOwner() external view returns(address) {
        return loadProxyOwner();
    }

    function loadProxyOwner() internal view returns(address) {
        address _owner;
        bytes32 position = OWNER_SLOT;
        assembly {
            _owner := sload(position)
        }
        return _owner;
    }

    function implementation() external override view returns (address) {
        return loadImplementation();
    }

    function loadImplementation() internal view returns(address) {
        address _impl;
        bytes32 position = IMPLEMENTATION_SLOT;
        assembly {
            _impl := sload(position)
        }
        return _impl;
    }

    function transferProxyOwnership(address newOwner) public onlyProxyOwner {
        require(newOwner != address(0), "ZERO_ADDRESS");
        emit ProxyOwnerUpdate(newOwner, loadProxyOwner());
        setProxyOwner(newOwner);
    }

    function setProxyOwner(address newOwner) private {
        bytes32 position = OWNER_SLOT;
        assembly {
            sstore(position, newOwner)
        }
    }

    function updateImplementation(address _newProxyTo) public onlyProxyOwner {
        require(_newProxyTo != address(0x0), "INVALID_PROXY_ADDRESS");
        require(isContract(_newProxyTo), "DESTINATION_ADDRESS_IS_NOT_A_CONTRACT");

        emit ProxyUpdated(_newProxyTo, loadImplementation());
        
        setImplementation(_newProxyTo);
    }

    function updateAndCall(address _newProxyTo, bytes memory data) payable public onlyProxyOwner {
        updateImplementation(_newProxyTo);

        (bool success, bytes memory returnData) = address(this).call{value: msg.value}(data);
        require(success, string(returnData));
    }

    function setImplementation(address _newProxyTo) private {
        bytes32 position = IMPLEMENTATION_SLOT;
        assembly {
            sstore(position, _newProxyTo)
        }
    }
    
    function isContract(address _target) internal view returns (bool) {
        if (_target == address(0)) {
            return false;
        }

        uint256 size;
        assembly {
            size := extcodesize(_target)
        }
        return size > 0;
    }
}



contract EtherPredicateProxy is UpgradableProxy {
    constructor(address _proxyTo)
        public
        UpgradableProxy(_proxyTo)
    {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_proxyTo","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_new","type":"address"},{"indexed":false,"internalType":"address","name":"_old","type":"address"}],"name":"ProxyOwnerUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_new","type":"address"},{"indexed":true,"internalType":"address","name":"_old","type":"address"}],"name":"ProxyUpdated","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxyOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxyType","outputs":[{"internalType":"uint256","name":"proxyTypeId","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferProxyOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newProxyTo","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"updateAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_newProxyTo","type":"address"}],"name":"updateImplementation","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

0000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _proxyTo (address): 0x0000000000000000000000000000000000000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000000