Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- Delegator
- Optimization enabled
- true
- Compiler version
- v0.8.17+commit.8df45f5f
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2025-04-30T20:24:52.302336Z
Constructor Arguments
0x000000000000000000000000b94333ca4de54f79b24294582471c9c336acb7c0
Arg [0] (address) : 0xb94333ca4de54f79b24294582471c9c336acb7c0
contracts/governance/Delegator.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.7;
pragma abicoder v2;
// OpenZeppelin v4
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
/**
* @title Delegator
* @author Railgun Contributors
* @notice 'Owner' contract for all railgun contracts
* delegates permissions to other contracts (voter, role)
*/
contract Delegator is Ownable {
/*
Mapping structure is calling address => contract => function signature
0 is used as a wildcard, so permission for contract 0 is permission for
any contract, and permission for function signature 0 is permission for
any function.
Comments below use * to signify wildcard and . notation to separate address/contract/function.
caller.*.* allows caller to call any function on any contract
caller.X.* allows caller to call any function on contract X
caller.*.Y allows caller to call function Y on any contract
*/
mapping(address => mapping(address => mapping(bytes4 => bool))) public permissions;
event GrantPermission(
address indexed caller,
address indexed contractAddress,
bytes4 indexed selector
);
event RevokePermission(
address indexed caller,
address indexed contractAddress,
bytes4 indexed selector
);
/**
* @notice Sets initial admin
*/
constructor(address _admin) {
Ownable.transferOwnership(_admin);
}
/**
* @notice Sets permission bit
* @dev See comment on permissions mapping for wildcard format
* @param _caller - caller to set permissions for
* @param _contract - contract to set permissions for
* @param _selector - selector to set permissions for
* @param _permission - permission bit to set
*/
function setPermission(
address _caller,
address _contract,
bytes4 _selector,
bool _permission
) public onlyOwner {
// If permission set is different to new permission then we execute, otherwise skip
if (permissions[_caller][_contract][_selector] != _permission) {
// Set permission bit
permissions[_caller][_contract][_selector] = _permission;
// Emit event
if (_permission) {
emit GrantPermission(_caller, _contract, _selector);
} else {
emit RevokePermission(_caller, _contract, _selector);
}
}
}
/**
* @notice Checks if caller has permission to execute function
* @param _caller - caller to check permissions for
* @param _contract - contract to check
* @param _selector - function signature to check
* @return if caller has permission
*/
function checkPermission(
address _caller,
address _contract,
bytes4 _selector
) public view returns (bool) {
/*
See comment on permissions mapping for structure
Comments below use * to signify wildcard and . notation to separate contract/function
*/
return (_caller == Ownable.owner() ||
permissions[_caller][_contract][_selector] || // Owner always has global permissions
permissions[_caller][_contract][0x0] || // Permission for function is given
permissions[_caller][address(0)][_selector] || // Permission for _contract.* is given
permissions[_caller][address(0)][0x0]); // Global permission is given
}
/**
* @notice Calls function
* @dev calls to functions on this contract are intercepted and run directly
* this is so the voting contract doesn't need to have special cases for calling
* functions other than this one.
* @param _contract - contract to call
* @param _data - calldata to pass to contract
* @return success - whether call succeeded
* @return returnData - return data from function call
*/
function callContract(
address _contract,
bytes calldata _data,
uint256 _value
) public returns (bool success, bytes memory returnData) {
// Get selector
bytes4 selector = bytes4(_data);
// Intercept calls to this contract
if (_contract == address(this)) {
if (selector == this.setPermission.selector) {
// Decode call data
(address caller, address calledContract, bytes4 _permissionSelector, bool permission) = abi
.decode(abi.encodePacked(_data[4:]), (address, address, bytes4, bool));
// Call setPermission
setPermission(caller, calledContract, _permissionSelector, permission);
// Return success with empty ReturnData bytes
bytes memory empty;
return (true, empty);
} else if (selector == this.transferOwnership.selector) {
// Decode call data
address newOwner = abi.decode(abi.encodePacked(_data[4:]), (address));
// Call transferOwnership
Ownable.transferOwnership(newOwner);
// Return success with empty ReturnData bytes
bytes memory empty;
return (true, empty);
} else if (selector == this.renounceOwnership.selector) {
// Call renounceOwnership
Ownable.renounceOwnership();
// Return success with empty ReturnData bytes
bytes memory empty;
return (true, empty);
} else {
// Return failed with empty ReturnData bytes
bytes memory empty;
return (false, empty);
}
}
// Check permissions
require(
checkPermission(msg.sender, _contract, selector),
"Delegator: Caller doesn't have permission"
);
// Call external contract and return
// solhint-disable-next-line avoid-low-level-calls
return _contract.call{ value: _value }(_data);
}
}
@openzeppelin/contracts/access/Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
@openzeppelin/contracts/utils/Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}
Compiler Settings
{"outputSelection":{"*":{"*":["storageLayout","abi","evm.bytecode","evm.deployedBytecode","evm.methodIdentifiers","metadata"],"":["ast"]}},"optimizer":{"runs":200,"enabled":true},"libraries":{}}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"address","name":"_admin","internalType":"address"}]},{"type":"event","name":"GrantPermission","inputs":[{"type":"address","name":"caller","internalType":"address","indexed":true},{"type":"address","name":"contractAddress","internalType":"address","indexed":true},{"type":"bytes4","name":"selector","internalType":"bytes4","indexed":true}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"RevokePermission","inputs":[{"type":"address","name":"caller","internalType":"address","indexed":true},{"type":"address","name":"contractAddress","internalType":"address","indexed":true},{"type":"bytes4","name":"selector","internalType":"bytes4","indexed":true}],"anonymous":false},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"bool","name":"success","internalType":"bool"},{"type":"bytes","name":"returnData","internalType":"bytes"}],"name":"callContract","inputs":[{"type":"address","name":"_contract","internalType":"address"},{"type":"bytes","name":"_data","internalType":"bytes"},{"type":"uint256","name":"_value","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"checkPermission","inputs":[{"type":"address","name":"_caller","internalType":"address"},{"type":"address","name":"_contract","internalType":"address"},{"type":"bytes4","name":"_selector","internalType":"bytes4"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"permissions","inputs":[{"type":"address","name":"","internalType":"address"},{"type":"address","name":"","internalType":"address"},{"type":"bytes4","name":"","internalType":"bytes4"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceOwnership","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setPermission","inputs":[{"type":"address","name":"_caller","internalType":"address"},{"type":"address","name":"_contract","internalType":"address"},{"type":"bytes4","name":"_selector","internalType":"bytes4"},{"type":"bool","name":"_permission","internalType":"bool"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]}]
Contract Creation Code
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ByteCode
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