// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

import {OwnerIsCreator} from "../shared/access/OwnerIsCreator.sol";
import {OCR2Abstract} from "./ocr/OCR2Abstract.sol";

/// @notice OCR2Base provides config management compatible with OCR3
contract OCR3Capability is OwnerIsCreator, OCR2Abstract {
  error InvalidConfig(string message);
  error ReportingUnsupported();

  string public constant override typeAndVersion = "OCR3Capability 1.0.0";

  // incremented each time a new config is posted. This count is incorporated
  // into the config digest, to prevent replay attacks.
  uint32 internal s_configCount;
  // makes it easier for offchain systems to extract config from logs.
  uint32 internal s_latestConfigBlockNumber;

  // Storing these fields used on the hot path in a ConfigInfo variable reduces the
  // retrieval of all of them to a single SLOAD. If any further fields are
  // added, make sure that storage of the struct still takes at most 32 bytes.
  struct ConfigInfo {
    bytes32 latestConfigDigest;
    uint8 f; // TODO: could be optimized by squeezing into one slot
    uint8 n;
  }
  ConfigInfo internal s_configInfo;

  // Reverts transaction if config args are invalid
  modifier checkConfigValid(uint256 numSigners, uint256 numTransmitters, uint256 f) {
    if (numSigners > MAX_NUM_ORACLES) revert InvalidConfig("too many signers");
    if (f == 0) revert InvalidConfig("f must be positive");
    if (numSigners != numTransmitters) revert InvalidConfig("oracle addresses out of registration");
    if (numSigners <= 3 * f) revert InvalidConfig("faulty-oracle f too high");
    _;
  }

  /// @notice sets offchain reporting protocol configuration incl. participating oracles
  /// @param _signers addresses with which oracles sign the reports
  /// @param _transmitters addresses oracles use to transmit the reports
  /// @param _f number of faulty oracles the system can tolerate
  /// @param _onchainConfig encoded on-chain contract configuration
  /// @param _offchainConfigVersion version number for offchainEncoding schema
  /// @param _offchainConfig encoded off-chain oracle configuration
  /// @dev signer = [ 1 byte type | 2 byte len | n byte value ]...
  function setConfig(
    bytes[] calldata _signers,
    address[] calldata _transmitters,
    uint8 _f,
    bytes memory _onchainConfig,
    uint64 _offchainConfigVersion,
    bytes memory _offchainConfig
  ) external override checkConfigValid(_signers.length, _transmitters.length, _f) onlyOwner {
    // Bounded by MAX_NUM_ORACLES in OCR2Abstract.sol
    for (uint256 i = 0; i < _signers.length; ++i) {
      if (_transmitters[i] == address(0)) revert InvalidConfig("transmitter must not be empty");
      // add new signers
      bytes calldata publicKeys = _signers[i];
      uint256 offset = 0;
      uint256 publicKeysLength = uint16(publicKeys.length);
      // scan through public keys to validate encoded format
      while (offset < publicKeysLength) {
        if (offset + 3 > publicKeysLength) revert InvalidConfig("invalid signer pubKey encoding");
        uint256 keyLen = uint256(uint8(publicKeys[offset + 1])) + (uint256(uint8(publicKeys[offset + 2])) << 8);
        if (offset + 3 + keyLen > publicKeysLength) revert InvalidConfig("invalid signer pubKey encoding");
        offset += 3 + keyLen;
      }
    }
    s_configInfo.f = _f;
    uint32 previousConfigBlockNumber = s_latestConfigBlockNumber;
    s_latestConfigBlockNumber = uint32(block.number);
    s_configCount += 1;
    {
      s_configInfo.latestConfigDigest = _configDigestFromConfigData(
        block.chainid,
        address(this),
        s_configCount,
        _signers,
        _transmitters,
        _f,
        _onchainConfig,
        _offchainConfigVersion,
        _offchainConfig
      );
    }
    s_configInfo.n = uint8(_signers.length);

    emit ConfigSet(
      previousConfigBlockNumber,
      s_configInfo.latestConfigDigest,
      s_configCount,
      _signers,
      _transmitters,
      _f,
      _onchainConfig,
      _offchainConfigVersion,
      _offchainConfig
    );
  }

  function _configDigestFromConfigData(
    uint256 _chainId,
    address _contractAddress,
    uint64 _configCount,
    bytes[] calldata _signers,
    address[] calldata _transmitters,
    uint8 _f,
    bytes memory _onchainConfig,
    uint64 _encodedConfigVersion,
    bytes memory _encodedConfig
  ) internal pure returns (bytes32) {
    uint256 h = uint256(
      keccak256(
        abi.encode(
          _chainId,
          _contractAddress,
          _configCount,
          _signers,
          _transmitters,
          _f,
          _onchainConfig,
          _encodedConfigVersion,
          _encodedConfig
        )
      )
    );
    uint256 prefixMask = type(uint256).max << (256 - 16); // 0xFFFF00..00
    uint256 prefix = 0x000e << (256 - 16); // 0x000e00..00
    return bytes32((prefix & prefixMask) | (h & ~prefixMask));
  }

  /// @notice information about current offchain reporting protocol configuration
  /// @return configCount ordinal number of current config, out of all configs applied to this contract so far
  /// @return blockNumber block at which this config was set
  /// @return configDigest domain-separation tag for current config (see __configDigestFromConfigData)
  function latestConfigDetails()
    external
    view
    override
    returns (uint32 configCount, uint32 blockNumber, bytes32 configDigest)
  {
    return (s_configCount, s_latestConfigBlockNumber, s_configInfo.latestConfigDigest);
  }

  function transmit(
    // NOTE: If these parameters are changed, expectedMsgDataLength and/or
    // TRANSMIT_MSGDATA_CONSTANT_LENGTH_COMPONENT need to be changed accordingly
    bytes32[3] calldata /* reportContext */,
    bytes calldata /* report */,
    bytes32[] calldata /* rs */,
    bytes32[] calldata /* ss */,
    bytes32 /* rawVs */ // signatures
  ) external pure override {
    revert ReportingUnsupported();
  }

  /// @inheritdoc OCR2Abstract
  function latestConfigDigestAndEpoch()
    external
    view
    virtual
    override
    returns (bool scanLogs, bytes32 configDigest, uint32 epoch)
  {
    return (true, bytes32(0), uint32(0));
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

/// @title The OwnerIsCreator contract
/// @notice A contract with helpers for basic contract ownership.
contract OwnerIsCreator is ConfirmedOwner {
  constructor() ConfirmedOwner(msg.sender) {}
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

import {ITypeAndVersion} from "../../shared/interfaces/ITypeAndVersion.sol";

abstract contract OCR2Abstract is ITypeAndVersion {
  // Maximum number of oracles the offchain reporting protocol is designed for
  uint256 internal constant MAX_NUM_ORACLES = 31;

  /**
   * @notice triggers a new run of the offchain reporting protocol
   * @param previousConfigBlockNumber block in which the previous config was set, to simplify historic analysis
   * @param configDigest configDigest of this configuration
   * @param configCount ordinal number of this config setting among all config settings over the life of this contract
   * @param signers ith element is address ith oracle uses to sign a report
   * @param transmitters ith element is address ith oracle uses to transmit a report via the transmit method
   * @param f maximum number of faulty/dishonest oracles the protocol can tolerate while still working correctly
   * @param onchainConfig serialized configuration used by the contract (and possibly oracles)
   * @param offchainConfigVersion version of the serialization format used for "offchainConfig" parameter
   * @param offchainConfig serialized configuration used by the oracles exclusively and only passed through the contract
   */
  event ConfigSet(
    uint32 previousConfigBlockNumber,
    bytes32 configDigest,
    uint64 configCount,
    bytes[] signers,
    address[] transmitters,
    uint8 f,
    bytes onchainConfig,
    uint64 offchainConfigVersion,
    bytes offchainConfig
  );

  /**
   * @notice sets offchain reporting protocol configuration incl. participating oracles
   * @param signers addresses with which oracles sign the reports
   * @param transmitters addresses oracles use to transmit the reports
   * @param f number of faulty oracles the system can tolerate
   * @param onchainConfig serialized configuration used by the contract (and possibly oracles)
   * @param offchainConfigVersion version number for offchainEncoding schema
   * @param offchainConfig serialized configuration used by the oracles exclusively and only passed through the contract
   */
  function setConfig(
    bytes[] memory signers,
    address[] memory transmitters,
    uint8 f,
    bytes memory onchainConfig,
    uint64 offchainConfigVersion,
    bytes memory offchainConfig
  ) external virtual;

  /**
   * @notice information about current offchain reporting protocol configuration
   * @return configCount ordinal number of current config, out of all configs applied to this contract so far
   * @return blockNumber block at which this config was set
   * @return configDigest domain-separation tag for current config (see _configDigestFromConfigData)
   */
  function latestConfigDetails()
    external
    view
    virtual
    returns (uint32 configCount, uint32 blockNumber, bytes32 configDigest);

  /**
    * @notice optionally emitted to indicate the latest configDigest and epoch for
     which a report was successfully transmitted. Alternatively, the contract may
     use latestConfigDigestAndEpoch with scanLogs set to false.
  */
  event Transmitted(bytes32 configDigest, uint32 epoch);

  /**
     * @notice optionally returns the latest configDigest and epoch for which a
     report was successfully transmitted. Alternatively, the contract may return
     scanLogs set to true and use Transmitted events to provide this information
     to offchain watchers.
   * @return scanLogs indicates whether to rely on the configDigest and epoch
     returned or whether to scan logs for the Transmitted event instead.
   * @return configDigest
   * @return epoch
   */
  function latestConfigDigestAndEpoch()
    external
    view
    virtual
    returns (bool scanLogs, bytes32 configDigest, uint32 epoch);

  /**
   * @notice transmit is called to post a new report to the contract
   * @param report serialized report, which the signatures are signing.
   * @param rs ith element is the R components of the ith signature on report. Must have at most maxNumOracles entries
   * @param ss ith element is the S components of the ith signature on report. Must have at most maxNumOracles entries
   * @param rawVs ith element is the the V component of the ith signature
   */
  function transmit(
    // NOTE: If these parameters are changed, expectedMsgDataLength and/or
    // TRANSMIT_MSGDATA_CONSTANT_LENGTH_COMPONENT need to be changed accordingly
    bytes32[3] calldata reportContext,
    bytes calldata report,
    bytes32[] calldata rs,
    bytes32[] calldata ss,
    bytes32 rawVs // signatures
  ) external virtual;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

/// @title The ConfirmedOwner contract
/// @notice A contract with helpers for basic contract ownership.
contract ConfirmedOwner is ConfirmedOwnerWithProposal {
  constructor(address newOwner) ConfirmedOwnerWithProposal(newOwner, address(0)) {}
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface ITypeAndVersion {
  function typeAndVersion() external pure returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

/// @title The ConfirmedOwner contract
/// @notice A contract with helpers for basic contract ownership.
contract ConfirmedOwnerWithProposal is IOwnable {
  address private s_owner;
  address private s_pendingOwner;

  event OwnershipTransferRequested(address indexed from, address indexed to);
  event OwnershipTransferred(address indexed from, address indexed to);

  constructor(address newOwner, address pendingOwner) {
    // solhint-disable-next-line gas-custom-errors
    require(newOwner != address(0), "Cannot set owner to zero");

    s_owner = newOwner;
    if (pendingOwner != address(0)) {
      _transferOwnership(pendingOwner);
    }
  }

  /// @notice Allows an owner to begin transferring ownership to a new address.
  function transferOwnership(address to) public override onlyOwner {
    _transferOwnership(to);
  }

  /// @notice Allows an ownership transfer to be completed by the recipient.
  function acceptOwnership() external override {
    // solhint-disable-next-line gas-custom-errors
    require(msg.sender == s_pendingOwner, "Must be proposed owner");

    address oldOwner = s_owner;
    s_owner = msg.sender;
    s_pendingOwner = address(0);

    emit OwnershipTransferred(oldOwner, msg.sender);
  }

  /// @notice Get the current owner
  function owner() public view override returns (address) {
    return s_owner;
  }

  /// @notice validate, transfer ownership, and emit relevant events
  function _transferOwnership(address to) private {
    // solhint-disable-next-line gas-custom-errors
    require(to != msg.sender, "Cannot transfer to self");

    s_pendingOwner = to;

    emit OwnershipTransferRequested(s_owner, to);
  }

  /// @notice validate access
  function _validateOwnership() internal view {
    // solhint-disable-next-line gas-custom-errors
    require(msg.sender == s_owner, "Only callable by owner");
  }

  /// @notice Reverts if called by anyone other than the contract owner.
  modifier onlyOwner() {
    _validateOwnership();
    _;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IOwnable {
  function owner() external returns (address);

  function transferOwnership(address recipient) external;

  function acceptOwnership() external;
}

{
  "remappings": [
    "forge-std/=src/v0.8/vendor/forge-std/src/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "@arbitrum/=node_modules/@arbitrum/",
    "hardhat/=node_modules/hardhat/",
    "@eth-optimism/=node_modules/@eth-optimism/",
    "@scroll-tech/=node_modules/@scroll-tech/",
    "@zksync/=node_modules/@zksync/",
    "@offchainlabs/=node_modules/@offchainlabs/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 100000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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