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CrossDomainOwnable2.sol
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CrossDomainOwnable2.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import { Predeploys } from "../libraries/Predeploys.sol";
import { L2CrossDomainMessenger } from "./L2CrossDomainMessenger.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
/**
* @title CrossDomainOwnable2
* @notice This contract extends the OpenZeppelin `Ownable` contract for L2 contracts to be owned
* by contracts on L1. Note that this contract is meant to be used with systems that use
* the CrossDomainMessenger system. It will not work if the OptimismPortal is used
* directly.
*/
abstract contract CrossDomainOwnable2 is Ownable {
/**
* @notice Overrides the implementation of the `onlyOwner` modifier to check that the unaliased
* `xDomainMessageSender` is the owner of the contract. This value is set to the caller
* of the L1CrossDomainMessenger.
*/
function _checkOwner() internal view override {
L2CrossDomainMessenger messenger = L2CrossDomainMessenger(
Predeploys.L2_CROSS_DOMAIN_MESSENGER
);
require(
msg.sender == address(messenger),
"CrossDomainOwnable2: caller is not the messenger"
);
require(
owner() == messenger.xDomainMessageSender(),
"CrossDomainOwnable2: caller is not the owner"
);
}
}