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// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.20;

import { ReentrancyGuard } from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import { IYaru } from "./interfaces/IYaru.sol";
import { IHashi, IAdapter } from "./interfaces/IHashi.sol";
import { Message } from "./interfaces/IMessage.sol";
import { MessageIdCalculator } from "./utils/MessageIdCalculator.sol";
import { MessageHashCalculator } from "./utils/MessageHashCalculator.sol";
import { IJushin } from "./interfaces/IJushin.sol";

contract Yaru is IYaru, MessageIdCalculator, MessageHashCalculator, ReentrancyGuard {
    address public immutable HASHI;
    address public immutable YAHO;
    uint256 public immutable SOURCE_CHAIN_ID;

    mapping(uint256 => bool) public executed;

    constructor(address hashi, address yaho_, uint256 sourceChainId) {
        HASHI = hashi;
        YAHO = yaho_;
        SOURCE_CHAIN_ID = sourceChainId;
    }

    /// @inheritdoc IYaru
    function executeMessages(Message[] calldata messages) external nonReentrant returns (bytes[] memory) {
        bytes[] memory returnDatas = new bytes[](messages.length);
        for (uint256 i = 0; i < messages.length; ) {
            Message memory message = messages[i];

            bytes32 messageHash = calculateMessageHash(message);
            uint256 messageId = calculateMessageId(SOURCE_CHAIN_ID, YAHO, messageHash);

            if (message.targetChainId != block.chainid) revert InvalidToChainId(message.targetChainId, block.chainid);

            if (executed[messageId]) revert MessageIdAlreadyExecuted(messageId);
            executed[messageId] = true;

            if (
                !IHashi(HASHI).checkHashWithThresholdFromAdapters(
                    SOURCE_CHAIN_ID,
                    messageId,
                    message.threshold,
                    message.adapters
                )
            ) revert ThresholdNotMet();

            try
                IJushin(message.receiver).onMessage(
                    messageId,
                    SOURCE_CHAIN_ID,
                    message.sender,
                    message.threshold,
                    message.adapters,
                    message.data
                )
            returns (bytes memory returnData) {
                returnDatas[i] = returnData;
            } catch {
                revert CallFailed();
            }

            emit MessageExecuted(messageId, message);

            unchecked {
                ++i;
            }
        }
        return returnDatas;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

/**
 * @title IAdapter
 */
interface IAdapter {
    error ConflictingBlockHeader(uint256 blockNumber, bytes32 blockHash, bytes32 storedBlockHash);
    error InvalidBlockHeaderRLP();

    /**
     * @dev Emitted when a hash is stored.
     * @param id - The ID of the stored hash.
     * @param hash - The stored hash as bytes32 values.
     */
    event HashStored(uint256 indexed id, bytes32 indexed hash);

    /**
     * @dev Returns the hash for a given ID.
     * @param domain - Identifier for the domain to query.
     * @param id - Identifier for the ID to query.
     * @return hash Bytes32 hash for the given ID on the given domain.
     * @notice MUST return bytes32(0) if the hash is not present.
     */
    function getHash(uint256 domain, uint256 id) external view returns (bytes32 hash);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

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

/**
 * @title IHashi
 */
interface IHashi {
    error AdaptersDisagree(IAdapter adapterOne, IAdapter adapterTwo);
    error HashNotAvailableInAdapter(IAdapter adapter);
    error InvalidThreshold(uint256 threshold, uint256 maxThreshold);
    error NoAdaptersGiven();

    /**
     * @dev Checks whether the threshold is reached for a message given a set of adapters.
     * @param domain - ID of the domain to query.
     * @param id - ID for which to return hash.
     * @param threshold - Threshold to use.
     * @param adapters - Array of addresses for the adapters to query.
     * @notice If the threshold is 1, it will always return true.
     * @return result A boolean indicating if a threshold for a given message has been reached.
     */
    function checkHashWithThresholdFromAdapters(
        uint256 domain,
        uint256 id,
        uint256 threshold,
        IAdapter[] calldata adapters
    ) external view returns (bool);

    /**
     * @dev Returns the hash stored by a given adapter for a given ID.
     * @param domain - ID of the domain to query.
     * @param id - ID for which to return a hash.
     * @param adapter - Address of the adapter to query.
     * @return hash stored by the given adapter for the given ID.
     */
    function getHashFromAdapter(uint256 domain, uint256 id, IAdapter adapter) external view returns (bytes32);

    /**
     * @dev Returns the hashes for a given ID stored by a given set of adapters.
     * @param domain - The ID of the domain to query.
     * @param id - The ID for which to return hashes.
     * @param adapters - An array of addresses for the adapters to query.
     * @return hashes An array of hashes stored by the given adapters for the specified ID.
     */
    function getHashesFromAdapters(
        uint256 domain,
        uint256 id,
        IAdapter[] calldata adapters
    ) external view returns (bytes32[] memory);

    /**
     * @dev Returns the hash unanimously agreed upon by a given set of adapters.
     * @param domain - The ID of the domain to query.
     * @param id - The ID for which to return a hash.
     * @param adapters - An array of addresses for the adapters to query.
     * @return hash agreed on by the given set of adapters.
     * @notice MUST revert if adapters disagree on the hash or if an adapter does not report.
     */
    function getHash(uint256 domain, uint256 id, IAdapter[] calldata adapters) external view returns (bytes32);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

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

/**
 * @title IJushin
 */
interface IJushin {
    /**
     * @dev Handles the incoming message from a specified chain.
     * @param messageId - The unique identifier of the message.
     * @param sourceChainId - The ID of the origin chain from which the message originates.
     * @param sender - The address of the sender of the message on the origin chain.
     * @param threshold - The minimum number of adapters required to have stored the same message.
     * @param data - The data contained in the message, in bytes.
     * @param adapters - An array of `IAdapter` contracts.
     * @return result bytes at the user's choice
     */
    function onMessage(
        uint256 messageId,
        uint256 sourceChainId,
        address sender,
        uint256 threshold,
        IAdapter[] calldata adapters,
        bytes calldata data
    ) external returns (bytes memory);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

import { IReporter } from "./IReporter.sol";
import { IAdapter } from "./IAdapter.sol";

struct Message {
    uint256 nonce;
    uint256 targetChainId;
    uint256 threshold;
    address sender;
    address receiver;
    bytes data;
    IReporter[] reporters;
    IAdapter[] adapters;
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

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

/**
 * @title IMessageHashCalculator
 */
interface IMessageHashCalculator {
    /**
     * @dev Calculates and returns the hash of a given message.
     * @param message - The `Message` structure containing various fields to be hashed.
     * @return hash The keccak256 hash of the message, represented as a 32-byte hexadecimal string.
     */
    function calculateMessageHash(Message memory message) external pure returns (bytes32);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

/**
 * @title IMessageIdCalculator
 */
interface IMessageIdCalculator {
    /**
     * @dev Calculates and returns a unique identifier (ID) for a message.
     *
     * @param sourceChainId - The ID of the chain from which the message originates.
     * @param dispatcherAddress - The address of the dispatcher sending the message.
     * @param messageHash - The keccak256 hash of the message, represented as a 32-byte hexadecimal string.
     * @return messageId The unique identifier for the message, calculated based on the input parameters.
     */
    function calculateMessageId(
        uint256 sourceChainId,
        address dispatcherAddress,
        bytes32 messageHash
    ) external pure returns (uint256);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

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

interface IReporter {
    error NotYaho(address sender, address expectedYaho);

    /**
     * @dev Emitted when a block is dispatched to another chain.
     * @param targetChainId - The target chain's identifier associated with the dispatched block.
     * @param adapter - The adapter address associated with the dispatched block.
     * @param blockNumber - The block number associated with the dispatched block.
     * @param blockHeader - The dispatched block header as a bytes32 value.
     */
    event BlockDispatched(
        uint256 indexed targetChainId,
        IAdapter adapter,
        uint256 indexed blockNumber,
        bytes32 blockHeader
    );

    /**
     * @dev Emitted when a message is dispatched to another chain.
     * @param targetChainId - The target chain's identifier associated with the dispatched message.
     * @param adapter - The adapter address associated with the dispatched message.
     * @param messageId - The message identifier associated with the dispatched message.
     * @param messageHash - The dispatched message hash as a bytes32 value.
     */
    event MessageDispatched(
        uint256 indexed targetChainId,
        IAdapter adapter,
        uint256 indexed messageId,
        bytes32 messageHash
    );

    /**
     * @dev Dispatches blocks to a given adapter on the target chaib.
     * @param targetChainId - The target chain's Uint256 identifier.
     * @param adapter - The adapter instance to use.
     * @param blockNumbers - An array of Uint256 block numbers to dispatch.
     * @notice blockNumbers must include block numbers that are greater than or equal to (currentBlock - 256) due to EVM limitations.
     * @return result - The result returned by the adapter as bytes.
     */
    function dispatchBlocks(
        uint256 targetChainId,
        IAdapter adapter,
        uint256[] memory blockNumbers
    ) external payable returns (bytes32);

    /**
     * @dev Dispatches messages to a target chain using the specified adapter.
     * @param targetChainId - The target chain's Uint256 identifier.
     * @param adapter - The adapter instance to use.
     * @param messageIds - An array of Uint256 message identifiers.
     * @param messageHashes - An array of bytes32 message hashes.
     * @notice This function can be called only by Yaho
     * @return result - The result returned by the adapter as bytes.
     */
    function dispatchMessages(
        uint256 targetChainId,
        IAdapter adapter,
        uint256[] memory messageIds,
        bytes32[] memory messageHashes
    ) external payable returns (bytes32);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;

import { Message } from "./IMessage.sol";
import { IMessageHashCalculator } from "./IMessageHashCalculator.sol";
import { IMessageIdCalculator } from "./IMessageIdCalculator.sol";

/**
 * @title IYaru
 */
interface IYaru is IMessageHashCalculator, IMessageIdCalculator {
    error CallFailed();
    error InvalidToChainId(uint256 chainId, uint256 expectedChainId);
    error MessageIdAlreadyExecuted(uint256 messageId);
    error ThresholdNotMet();

    /**
     * @dev Emitted when a message is executed with its associated message ID and message object.
     * @param messageId - The message ID associated with the executed message.
     * @param message - The message object associated with this event.
     */
    event MessageExecuted(uint256 indexed messageId, Message message);

    /**
     * @dev Executes a batch of messages and returns the results if the threshold for a single message has been reached
     * @param messages - An array of `Message` structures
     * @return result An array of byte arrays, where each byte array is the result of executing a respective message from the input.
     */
    function executeMessages(Message[] calldata messages) external returns (bytes[] memory);
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.20;

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

contract MessageHashCalculator is IMessageHashCalculator {
    /// @inheritdoc IMessageHashCalculator
    function calculateMessageHash(Message memory message) public pure returns (bytes32) {
        return keccak256(abi.encode(message));
    }
}

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.20;

import { IMessageIdCalculator } from "../interfaces/IMessageIdCalculator.sol";

contract MessageIdCalculator is IMessageIdCalculator {
    /// @inheritdoc IMessageIdCalculator
    function calculateMessageId(
        uint256 sourceChainId,
        address dispatcherAddress,
        bytes32 messageHash
    ) public pure returns (uint256) {
        return uint256(keccak256(abi.encode(sourceChainId, dispatcherAddress, messageHash)));
    }
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"hashi","type":"address"},{"internalType":"address","name":"yaho_","type":"address"},{"internalType":"uint256","name":"sourceChainId","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"CallFailed","type":"error"},{"inputs":[{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"uint256","name":"expectedChainId","type":"uint256"}],"name":"InvalidToChainId","type":"error"},{"inputs":[{"internalType":"uint256","name":"messageId","type":"uint256"}],"name":"MessageIdAlreadyExecuted","type":"error"},{"inputs":[],"name":"ThresholdNotMet","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"messageId","type":"uint256"},{"components":[{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"threshold","type":"uint256"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"contract IReporter[]","name":"reporters","type":"address[]"},{"internalType":"contract IAdapter[]","name":"adapters","type":"address[]"}],"indexed":false,"internalType":"struct Message","name":"message","type":"tuple"}],"name":"MessageExecuted","type":"event"},{"inputs":[],"name":"HASHI","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SOURCE_CHAIN_ID","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"YAHO","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"threshold","type":"uint256"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"contract IReporter[]","name":"reporters","type":"address[]"},{"internalType":"contract IAdapter[]","name":"adapters","type":"address[]"}],"internalType":"struct Message","name":"message","type":"tuple"}],"name":"calculateMessageHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"sourceChainId","type":"uint256"},{"internalType":"address","name":"dispatcherAddress","type":"address"},{"internalType":"bytes32","name":"messageHash","type":"bytes32"}],"name":"calculateMessageId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"threshold","type":"uint256"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"contract IReporter[]","name":"reporters","type":"address[]"},{"internalType":"contract IAdapter[]","name":"adapters","type":"address[]"}],"internalType":"struct Message[]","name":"messages","type":"tuple[]"}],"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"}]

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000000000000000000000000a86bc62ac53dc86687ab6c15fdebc71ad51fb61500000000000000000000000021eab033c7d2df6a67aef6c5bda9a7f151eb9f520000000000000000000000000000000000000000000000000000000000aa36a7

-----Decoded View---------------
Arg [0] : hashi (address): 0xA86bc62Ac53Dc86687AB6C15fdebC71ad51fB615
Arg [1] : yaho_ (address): 0x21eAB033C7D2DF6A67AeF6C5Bda9A7F151eB9f52
Arg [2] : sourceChainId (uint256): 11155111

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000a86bc62ac53dc86687ab6c15fdebc71ad51fb615
Arg [1] : 00000000000000000000000021eab033c7d2df6a67aef6c5bda9a7f151eb9f52
Arg [2] : 0000000000000000000000000000000000000000000000000000000000aa36a7