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hyperlane-monorepo/solidity/contracts/hooks/aggregation/ERC5164Hook.sol

67 lines
2.0 KiB

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;
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// ============ Internal Imports ============
import {TypeCasts} from "../../libs/TypeCasts.sol";
import {IPostDispatchHook} from "../../interfaces/hooks/IPostDispatchHook.sol";
import {IMessageDispatcher} from "../../interfaces/hooks/IMessageDispatcher.sol";
import {AbstractMessageIdAuthHook} from "../libs/AbstractMessageIdAuthHook.sol";
// ============ External Imports ============
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
/**
* @title 5164MessageHook
* @notice Message hook to inform the 5164 ISM of messages published through
* any of the 5164 adapters.
*/
contract ERC5164Hook is AbstractMessageIdAuthHook {
IMessageDispatcher public immutable dispatcher;
constructor(
address _mailbox,
uint32 _destinationDomain,
bytes32 _ism,
address _dispatcher
) AbstractMessageIdAuthHook(_mailbox, _destinationDomain, _ism) {
require(
Address.isContract(_dispatcher),
"ERC5164Hook: invalid dispatcher"
);
dispatcher = IMessageDispatcher(_dispatcher);
}
// ============ Internal Functions ============
function _quoteDispatch(
bytes calldata,
bytes calldata
) internal pure override returns (uint256) {
return 0; // EIP-5164 doesn't enforce a gas abstraction
}
function _sendMessageId(
bytes calldata,
/* metadata */
bytes memory payload
) internal override {
require(msg.value == 0, "ERC5164Hook: no value allowed");
dispatcher.dispatchMessage(
destinationDomain,
TypeCasts.bytes32ToAddress(ism),
payload
);
}
}