Address Contract Verified

Address 0xe8f07fb91f7ac5c758E9Fa7b814AEe751CEE28b7

Balance 0 ETH

Nonce 1

Code Size 2393 bytes

Creator 0xE693e85d...2d8c at tx 0xd9176263...94519f

Indexed Transactions 0

External Etherscan · Sourcify

Contract Bytecode

2393 bytes

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Verified Source Code Full Match

Compiler: v0.6.12+commit.27d51765 EVM: istanbul Optimization: Yes (999999 runs)

UpgradableProxy.sol 139 lines

// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

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

    function implementation() external view virtual override 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("network.proxy.implementation");
    bytes32 constant OWNER_SLOT = keccak256("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 view override 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) public payable 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;
    }
}

Read Contract

implementation 0x5c60da1b → address

proxyOwner 0x025313a2 → address

proxyType 0x4555d5c9 → uint256

Write Contract 3 functions

These functions modify contract state and require a wallet transaction to execute.

transferProxyOwnership 0xf1739cae

address newOwner

updateAndCall 0xd88ca2c8

address _newProxyTo
bytes data

updateImplementation 0x025b22bc

address _newProxyTo

Token Balances (2)

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USDT 0.0212 USDC 0.0008

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