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Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
This contract has been partially verified via Sourcify.
View contract in Sourcify repository
- Contract name:
- UserWallet
- Optimization enabled
- false
- Compiler version
- v0.5.2+commit.1df8f40c
- EVM Version
- byzantium
- Verified at
- 2026-04-22T01:58:53.645640Z
UserWallet.sol
pragma solidity ^0.5.2;
/**
* @title RegistryInterface Interface
*/
interface RegistryInterface {
function logic(address logicAddr) external view returns (bool);
function record(address currentOwner, address nextOwner) external;
}
/**
* @title Address Registry Record
*/
contract AddressRecord {
/**
* @dev address registry of system, logic and wallet addresses
*/
address public registry;
/**
* @dev Throws if the logic is not authorised
*/
modifier logicAuth(address logicAddr) {
require(logicAddr != address(0), "logic-proxy-address-required");
require(RegistryInterface(registry).logic(logicAddr), "logic-not-authorised");
_;
}
}
/**
* @title User Auth
*/
contract UserAuth is AddressRecord {
event LogSetOwner(address indexed owner);
address public owner;
/**
* @dev Throws if not called by owner or contract itself
*/
modifier auth {
require(isAuth(msg.sender), "permission-denied");
_;
}
/**
* @dev sets new owner
*/
function setOwner(address nextOwner) public auth {
RegistryInterface(registry).record(owner, nextOwner);
owner = nextOwner;
emit LogSetOwner(nextOwner);
}
/**
* @dev checks if called by owner or contract itself
* @param src is the address initiating the call
*/
function isAuth(address src) public view returns (bool) {
if (src == owner) {
return true;
} else if (src == address(this)) {
return true;
}
return false;
}
}
/**
* @dev logging the execute events
*/
contract UserNote {
event LogNote(
bytes4 indexed sig,
address indexed guy,
bytes32 indexed foo,
bytes32 bar,
uint wad,
bytes fax
);
modifier note {
bytes32 foo;
bytes32 bar;
assembly {
foo := calldataload(4)
bar := calldataload(36)
}
emit LogNote(
msg.sig,
msg.sender,
foo,
bar,
msg.value,
msg.data
);
_;
}
}
/**
* @title User Owned Contract Wallet
*/
contract UserWallet is UserAuth, UserNote {
event LogExecute(address target, uint srcNum, uint sessionNum);
/**
* @dev sets the "address registry", owner's last activity, owner's active period and initial owner
*/
constructor() public {
registry = msg.sender;
owner = msg.sender;
}
function() external payable {}
/**
* @dev Execute authorised calls via delegate call
* @param _target logic proxy address
* @param _data delegate call data
* @param _src to find the source
* @param _session to find the session
*/
function execute(
address _target,
bytes memory _data,
uint _src,
uint _session
)
public
payable
note
auth
logicAuth(_target)
returns (bytes memory response)
{
emit LogExecute(
_target,
_src,
_session
);
// call contract in current context
assembly {
let succeeded := delegatecall(sub(gas, 5000), _target, add(_data, 0x20), mload(_data), 0, 0)
let size := returndatasize
response := mload(0x40)
mstore(0x40, add(response, and(add(add(size, 0x20), 0x1f), not(0x1f))))
mstore(response, size)
returndatacopy(add(response, 0x20), 0, size)
switch iszero(succeeded)
case 1 {
// throw if delegatecall failed
revert(add(response, 0x20), size)
}
}
}
}
Compiler Settings
{"remappings":[],"optimizer":{"runs":0,"enabled":false},"libraries":{},"evmVersion":"byzantium","compilationTarget":{"UserWallet.sol":"UserWallet"}}
Contract ABI
[{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"setOwner","inputs":[{"type":"address","name":"nextOwner"}],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"bool","name":""}],"name":"isAuth","inputs":[{"type":"address","name":"src"}],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":""}],"name":"registry","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":""}],"name":"owner","inputs":[],"constant":true},{"type":"function","stateMutability":"payable","payable":true,"outputs":[{"type":"bytes","name":"response"}],"name":"execute","inputs":[{"type":"address","name":"_target"},{"type":"bytes","name":"_data"},{"type":"uint256","name":"_src"},{"type":"uint256","name":"_session"}],"constant":false},{"type":"constructor","stateMutability":"nonpayable","payable":false,"inputs":[]},{"type":"fallback","stateMutability":"payable","payable":true},{"type":"event","name":"LogExecute","inputs":[{"type":"address","name":"target","indexed":false},{"type":"uint256","name":"srcNum","indexed":false},{"type":"uint256","name":"sessionNum","indexed":false}],"anonymous":false},{"type":"event","name":"LogNote","inputs":[{"type":"bytes4","name":"sig","indexed":true},{"type":"address","name":"guy","indexed":true},{"type":"bytes32","name":"foo","indexed":true},{"type":"bytes32","name":"bar","indexed":false},{"type":"uint256","name":"wad","indexed":false},{"type":"bytes","name":"fax","indexed":false}],"anonymous":false},{"type":"event","name":"LogSetOwner","inputs":[{"type":"address","name":"owner","indexed":true}],"anonymous":false}]
Contract Creation Code
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ByteCode
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