Contract

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { IHashi, IOracleAdapter } from "./interfaces/IHashi.sol";
import { Message } from "./interfaces/IMessage.sol";
import { IMessageExecutor } from "./interfaces/IMessageExecutor.sol";
import { MessageHashCalculator } from "./utils/MessageHashCalculator.sol";

contract Yaru is IMessageExecutor, MessageHashCalculator {
    IHashi public immutable hashi;
    address public immutable yaho;
    uint256 public immutable chainId;
    mapping(uint256 => bool) public executed;
    address public sender;

    error ReentranceNotAllowed(address);
    error UnequalArrayLengths(address emitter);
    error AlreadyExecuted(address emitter, uint256 id);
    error InvalidSender(address emitter, address sender);
    error HashMismatch(address emitter, uint256 id, bytes32 reportedHash, bytes32 calculatedHash);
    error CallFailed(address emitter, uint256 id);

    /// @param _hashi Address of the Hashi contract.
    /// @param _yaho Address of the Yaho contract
    constructor(IHashi _hashi, address _yaho, uint256 _chainId) {
        hashi = _hashi;
        yaho = _yaho;
        chainId = _chainId;
    }

    /// @dev Executes messages validated by a given set of oracle adapters
    /// @param messages Array of messages to execute.
    /// @param messageIds Array of corresponding messageIds to query for hashes from the given oracle adapters.
    /// @param senders Array of addresses that sent the corresponding messages.
    /// @param oracleAdapters Array of oracle adapters to query.
    /// @return returnDatas Array of data returned from each executed message.
    function executeMessages(
        Message[] memory messages,
        uint256[] memory messageIds,
        address[] memory senders,
        IOracleAdapter[] memory oracleAdapters
    ) public returns (bytes[] memory) {
        if (sender != address(0)) revert ReentranceNotAllowed(address(0));
        if (messages.length != senders.length || messages.length != messageIds.length)
            revert UnequalArrayLengths(address(this));
        bytes[] memory returnDatas = new bytes[](messages.length);
        for (uint256 i = 0; i < messages.length; i++) {
            uint256 id = messageIds[i];

            if (executed[id]) revert AlreadyExecuted(address(this), id);
            if (senders[i] == address(0)) revert InvalidSender(address(this), senders[i]);

            executed[id] = true;

            Message memory message = messages[i];
            sender = senders[i];
            bytes32 reportedHash = hashi.getHash(chainId, id, oracleAdapters);
            bytes32 calculatedHash = calculateHash(chainId, id, yaho, sender, message);
            if (reportedHash != calculatedHash) revert HashMismatch(address(this), id, reportedHash, calculatedHash);

            (bool success, bytes memory returnData) = address(message.to).call(message.data);
            if (!success) revert CallFailed(address(this), id);

            delete sender;
            returnDatas[i] = returnData;
            emit MessageIdExecuted(message.toChainId, bytes32(id));
        }
        return returnDatas;
    }
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { IOracleAdapter } from "./IOracleAdapter.sol";

interface IHashi {
    function getHash(
        uint256 domain,
        uint256 id,
        IOracleAdapter[] memory oracleAdapters
    ) external view returns (bytes32 hash);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

struct Message {
    address to;
    uint256 toChainId;
    bytes data;
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

interface IMessageExecutor {
    event MessageIdExecuted(uint256 indexed fromChainId, bytes32 indexed messageId);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

interface IOracleAdapter {
    event HashStored(uint256 indexed id, bytes32 indexed hashes);

    error InvalidBlockHeaderLength(uint256 length);
    error InvalidBlockHeaderRLP();
    error ConflictingBlockHeader(uint256 blockNumber, bytes32 reportedBlockHash, bytes32 storedBlockHash);

    /// @dev Returns the hash for a given ID, as reported by the oracle.
    /// @param domain Identifier for the domain to query.
    /// @param id Identifier for the ID to query.
    /// @return hash Bytes32 hash reported by the oracle for the given ID on the given domain.
    /// @notice MUST return bytes32(0) if the oracle has not yet reported a hash for the given ID.
    function getHashFromOracle(uint256 domain, uint256 id) external view returns (bytes32 hash);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { Message } from "../interfaces/IMessage.sol";

contract MessageHashCalculator {
    /// @dev Calculates the ID of a given message.
    /// @param chainId ID of the chain on which the message was/will be dispatched.
    /// @param id ID of the message that was/will be dispatched.
    /// @param origin Contract that did/will dispatch the given message.
    /// @param sender Sender of the message that was/will be dispatched.
    /// @param message Message that was/will be dispatched.
    function calculateHash(
        uint256 chainId,
        uint256 id,
        address origin,
        address sender,
        Message memory message
    ) public pure returns (bytes32 calculatedHash) {
        calculatedHash = keccak256(abi.encode(chainId, id, origin, sender, message));
    }
}

{
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"contract IHashi","name":"_hashi","type":"address"},{"internalType":"address","name":"_yaho","type":"address"},{"internalType":"uint256","name":"_chainId","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"emitter","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"AlreadyExecuted","type":"error"},{"inputs":[{"internalType":"address","name":"emitter","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"CallFailed","type":"error"},{"inputs":[{"internalType":"address","name":"emitter","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"bytes32","name":"reportedHash","type":"bytes32"},{"internalType":"bytes32","name":"calculatedHash","type":"bytes32"}],"name":"HashMismatch","type":"error"},{"inputs":[{"internalType":"address","name":"emitter","type":"address"},{"internalType":"address","name":"sender","type":"address"}],"name":"InvalidSender","type":"error"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"ReentranceNotAllowed","type":"error"},{"inputs":[{"internalType":"address","name":"emitter","type":"address"}],"name":"UnequalArrayLengths","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"fromChainId","type":"uint256"},{"indexed":true,"internalType":"bytes32","name":"messageId","type":"bytes32"}],"name":"MessageIdExecuted","type":"event"},{"inputs":[{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"uint256","name":"id","type":"uint256"},{"internalType":"address","name":"origin","type":"address"},{"internalType":"address","name":"sender","type":"address"},{"components":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"toChainId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct Message","name":"message","type":"tuple"}],"name":"calculateHash","outputs":[{"internalType":"bytes32","name":"calculatedHash","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"chainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"toChainId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct Message[]","name":"messages","type":"tuple[]"},{"internalType":"uint256[]","name":"messageIds","type":"uint256[]"},{"internalType":"address[]","name":"senders","type":"address[]"},{"internalType":"contract IOracleAdapter[]","name":"oracleAdapters","type":"address[]"}],"name":"executeMessages","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"executed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hashi","outputs":[{"internalType":"contract IHashi","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sender","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"yaho","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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