@etherspot/contracts/deployments/rootstock/solcInputs/6ff48c01406545b171c1098ac74d4555.json

Etherspot Solidity contracts

{
  "language": "Solidity",
  "sources": {
    "src/bridges/facets/StargateFacet.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.4;\n\nimport {IStargateRouter} from \"../interfaces/IStargateRouter.sol\";\nimport {IStargateReceiver} from \"../interfaces/IStargateReceiver.sol\";\nimport {IERC20} from \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport {SafeERC20} from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport {ReentrancyGuard} from \"../../common/helpers/DiamondReentrancyGuard.sol\";\nimport {CannotBridgeToSameNetwork, InvalidAmount, InvalidConfig} from \"../errors/GenericErrors.sol\";\nimport {SenderNotStargateRouter, NoMsgValueForCrossChainMessage, StargateRouterAddressZero, InvalidSourcePoolId, InvalidDestinationPoolId} from \"../errors/StargateErrors.sol\";\nimport {LibDiamond} from \"../libs/LibDiamond.sol\";\n\n/// @title StargateFacet\n/// @author Luke Wickens <luke@pillarproject.io>\n/// @notice Stargate/LayerZero intergration for bridging tokens\n\ncontract StargateFacet is IStargateReceiver, ReentrancyGuard {\n    using SafeERC20 for IERC20;\n\n    //////////////////////////////////////////////////////////////\n    /////////////////////////// Events ///////////////////////////\n    //////////////////////////////////////////////////////////////\n    event SGInitialized(address stargate, uint16 chainId);\n    event SGTransferStarted(\n        string bridgeUsed,\n        address fromToken,\n        address toToken,\n        address from,\n        address to,\n        uint256 amount,\n        uint16 chainIdTo\n    );\n    event SGReceivedOnDestination(address token, uint256 amount);\n    event SGUpdatedRouter(address newAddress);\n    event SGUpdatedSlippageTolerance(uint256 newSlippage);\n    event SGAddedPool(uint16 chainId, address token, uint16 poolId);\n\n    //////////////////////////////////////////////////////////////\n    ////////////////////////// Storage ///////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    bytes32 internal constant NAMESPACE =\n        keccak256(\"io.etherspot.facets.stargate\");\n    struct Storage {\n        address stargateRouter;\n        uint16 chainId;\n        uint256 dstGas;\n        uint256 slippage;\n        mapping(uint16 => mapping(address => uint16)) poolIds;\n    }\n\n    //////////////////////////////////////////////////////////////\n    ////////////////////////// Structs ///////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    struct StargateData {\n        uint256 qty;\n        address fromToken;\n        address toToken;\n        uint16 dstChainId;\n        address to;\n        address destStargateComposed;\n    }\n\n    /// @notice initializes state variables for the Stargate facet\n    /// @param _stargateRouter - address of the Stargate router contract\n    /// @param _chainId - current chain id\n    function sgInitialize(address _stargateRouter, uint16 _chainId) external {\n        if (_stargateRouter == address(0)) revert InvalidConfig();\n        LibDiamond.enforceIsContractOwner();\n        Storage storage s = getStorage();\n        s.stargateRouter = address(_stargateRouter);\n        s.chainId = _chainId;\n        s.slippage = 50; // equates to 0.5%\n        // Adding pre-existing pools => USDC: 1, USDT: 2, BUSD: 5\n        sgAddPool(1, 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, 1);\n        sgAddPool(1, 0xdAC17F958D2ee523a2206206994597C13D831ec7, 2);\n        sgAddPool(2, 0x55d398326f99059fF775485246999027B3197955, 2);\n        sgAddPool(2, 0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56, 5);\n        sgAddPool(6, 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E, 1);\n        sgAddPool(6, 0x9702230A8Ea53601f5cD2dc00fDBc13d4dF4A8c7, 2);\n        sgAddPool(9, 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174, 1);\n        sgAddPool(9, 0xc2132D05D31c914a87C6611C10748AEb04B58e8F, 2);\n        sgAddPool(10, 0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8, 1);\n        sgAddPool(10, 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9, 2);\n        sgAddPool(11, 0x7F5c764cBc14f9669B88837ca1490cCa17c31607, 1);\n        sgAddPool(12, 0x04068DA6C83AFCFA0e13ba15A6696662335D5B75, 1);\n        emit SGInitialized(_stargateRouter, _chainId);\n    }\n\n    /// @notice initializes state variables for the stargate facet\n    /// @param _sgData - struct containing information required to execute bridge\n    function sgBridgeTokens(StargateData memory _sgData)\n        external\n        payable\n        nonReentrant\n    {\n        // if (msg.value <= 0) revert NoMsgValueForCrossChainMessage();\n        if (_sgData.qty <= 0) revert InvalidAmount();\n        if (\n            _sgData.fromToken == address(0) ||\n            _sgData.toToken == address(0) ||\n            _sgData.to == address(0) ||\n            _sgData.destStargateComposed == address(0)\n        ) revert InvalidConfig();\n\n        // access storage\n        Storage storage s = getStorage();\n\n        // check pool ids are valid\n        uint16 srcPoolId = sgRetrievePoolId(s.chainId, _sgData.fromToken);\n        if (srcPoolId == 0) revert InvalidSourcePoolId();\n        uint16 dstPoolId = sgRetrievePoolId(\n            _sgData.dstChainId,\n            _sgData.toToken\n        );\n\n        // calculate cross chain fees\n        uint256 fees = sgCalculateFees(\n            _sgData.dstChainId,\n            _sgData.to,\n            s.stargateRouter\n        );\n\n        // calculate slippage\n        uint256 minAmountOut = sgMinAmountOut(_sgData.qty);\n\n        // encode sgReceive implemented\n        bytes memory destination = abi.encodePacked(\n            _sgData.destStargateComposed\n        );\n\n        // encode payload data to send to destination contract, which it will handle with sgReceive()\n        bytes memory payload = abi.encode(_sgData.to);\n\n        // this contract calls stargate swap()\n        IERC20(_sgData.fromToken).safeTransferFrom(\n            msg.sender,\n            address(this),\n            _sgData.qty\n        );\n\n        IERC20(_sgData.fromToken).safeApprove(\n            address(s.stargateRouter),\n            _sgData.qty\n        );\n\n        // Stargate's Router.swap() function sends the tokens to the destination chain.\n        IStargateRouter(s.stargateRouter).swap{value: fees}(\n            _sgData.dstChainId, // the destination chain id\n            srcPoolId, // the source Stargate poolId\n            dstPoolId, // the destination Stargate poolId\n            payable(msg.sender), // refund adddress. if msg.sender pays too much gas, return extra eth\n            _sgData.qty, // total tokens to send to destination chain\n            minAmountOut, // min amount allowed out\n            IStargateRouter.lzTxObj(200000, 0, \"0x\"), // default lzTxObj\n            destination, // destination address, the sgReceive() implementer\n            payload // bytes payload\n        );\n\n        emit SGTransferStarted(\n            \"stargate\",\n            _sgData.fromToken,\n            _sgData.toToken,\n            msg.sender,\n            _sgData.to,\n            _sgData.qty,\n            _sgData.dstChainId\n        );\n    }\n\n    /// @notice required to receive tokens on destination chain\n    /// @param _chainId The remote chainId sending the tokens\n    /// @param _srcAddress The remote Bridge address\n    /// @param _nonce The message ordering nonce\n    /// @param _token The token contract on the local chain\n    /// @param amountLD The qty of local _token contract tokens\n    /// @param _payload The bytes containing the toAddress\n    function sgReceive(\n        uint16 _chainId,\n        bytes memory _srcAddress,\n        uint256 _nonce,\n        address _token,\n        uint256 amountLD,\n        bytes memory _payload\n    ) external override {\n        Storage storage s = getStorage();\n        if (msg.sender != address(s.stargateRouter))\n            revert SenderNotStargateRouter();\n\n        address _toAddr = abi.decode(_payload, (address));\n        IERC20(_token).transfer(_toAddr, amountLD);\n        emit SGReceivedOnDestination(_token, amountLD);\n    }\n\n    /// @notice Calculates cross chain fee\n    /// @param _destChain Destination chain id\n    /// @param _receiver Receiver on destination chain\n    /// @param _router Address of stargate router\n    function sgCalculateFees(\n        uint16 _destChain,\n        address _receiver,\n        address _router\n    ) public view returns (uint256) {\n        (uint256 nativeFee, ) = IStargateRouter(_router).quoteLayerZeroFee(\n            _destChain, // destination chain id\n            1, // 1 = swap\n            abi.encodePacked(_receiver), // receiver on destination chain\n            \"0x\", // payload, using abi.encode()\n            IStargateRouter.lzTxObj(200000, 0, \"0x\")\n        );\n        return nativeFee;\n    }\n\n    /// @notice Calculates the minimum amount out using slippage tolerance\n    /// @param _amount Transfer amount\n    function sgMinAmountOut(uint256 _amount) public view returns (uint256) {\n        Storage storage s = getStorage();\n        // equates to 0.5% slippage\n        return (_amount * (10000 - s.slippage)) / (10000);\n    }\n\n    /// @notice Updates stargate router address for deployed chain\n    /// @param _newAddress Address of the new router\n    function sgUpdateRouter(address _newAddress) external {\n        LibDiamond.enforceIsContractOwner();\n        if (_newAddress == address(0)) revert StargateRouterAddressZero();\n        Storage storage s = getStorage();\n        s.stargateRouter = address(_newAddress);\n        emit SGUpdatedRouter(_newAddress);\n    }\n\n    /// @notice Updates slippage tolerance amount\n    /// @param _newSlippage New slippage amount\n    function sgUpdateSlippageTolerance(uint256 _newSlippage) external {\n        LibDiamond.enforceIsContractOwner();\n        Storage storage s = getStorage();\n        s.slippage = _newSlippage;\n        emit SGUpdatedSlippageTolerance(_newSlippage);\n    }\n\n    /// @notice Adds a new pool for a specific token and chain\n    /// @param _chainId Chain id of new pool (NOT actual chain id - check stargate pool ids docs)\n    /// @param _token Address of token\n    /// @param _poolId Pool id (check stargate pool ids docs)\n    function sgAddPool(\n        uint16 _chainId,\n        address _token,\n        uint16 _poolId\n    ) public {\n        LibDiamond.enforceIsContractOwner();\n        Storage storage s = getStorage();\n        s.poolIds[_chainId][_token] = _poolId;\n        emit SGAddedPool(_chainId, _token, _poolId);\n    }\n\n    /// @notice Checks for a valid token pool on specific chain\n    /// @param _chainId Chain id of new pool (NOT actual chain id - check stargate pool ids docs)\n    /// @param _token Address of token\n    /// @param _poolId Pool id (check stargate pool ids docs)\n    function sgCheckPoolId(\n        uint16 _chainId,\n        address _token,\n        uint16 _poolId\n    ) external view returns (bool) {\n        Storage storage s = getStorage();\n        return s.poolIds[_chainId][_token] == _poolId ? true : false;\n    }\n\n    /// @notice Retrieves pool id for a token on a specified chain\n    /// @param _chainId Chain id of new pool (NOT actual chain id - check stargate pool ids docs)\n    /// @param _token Address of token\n    function sgRetrievePoolId(uint16 _chainId, address _token)\n        public\n        view\n        returns (uint16)\n    {\n        Storage storage s = getStorage();\n        return s.poolIds[_chainId][_token];\n    }\n\n    //////////////////////////////////////////////////////////////\n    ////////////////////// Private Functions /////////////////////\n    //////////////////////////////////////////////////////////////\n\n    /// @dev fetch local storage\n    function getStorage() private pure returns (Storage storage s) {\n        bytes32 namespace = NAMESPACE;\n        // solhint-disable-next-line no-inline-assembly\n        assembly {\n            s.slot := namespace\n        }\n    }\n}\n"
    },
    "src/bridges/interfaces/IStargateRouter.sol": {
      "content": "// SPDX-License-Identifier:MIT\n\npragma solidity 0.8.4;\npragma abicoder v2;\n\ninterface IStargateRouter {\n    struct lzTxObj {\n        uint256 dstGasForCall;\n        uint256 dstNativeAmount;\n        bytes dstNativeAddr;\n    }\n\n    function addLiquidity(\n        uint256 _poolId,\n        uint256 _amountLD,\n        address _to\n    ) external;\n\n    function swap(\n        uint16 _dstChainId,\n        uint256 _srcPoolId,\n        uint256 _dstPoolId,\n        address payable _refundAddress,\n        uint256 _amountLD,\n        uint256 _minAmountLD,\n        lzTxObj memory _lzTxParams,\n        bytes calldata _to,\n        bytes calldata _payload\n    ) external payable;\n\n    function redeemRemote(\n        uint16 _dstChainId,\n        uint256 _srcPoolId,\n        uint256 _dstPoolId,\n        address payable _refundAddress,\n        uint256 _amountLP,\n        uint256 _minAmountLD,\n        bytes calldata _to,\n        lzTxObj memory _lzTxParams\n    ) external payable;\n\n    function instantRedeemLocal(\n        uint16 _srcPoolId,\n        uint256 _amountLP,\n        address _to\n    ) external returns (uint256);\n\n    function redeemLocal(\n        uint16 _dstChainId,\n        uint256 _srcPoolId,\n        uint256 _dstPoolId,\n        address payable _refundAddress,\n        uint256 _amountLP,\n        bytes calldata _to,\n        lzTxObj memory _lzTxParams\n    ) external payable;\n\n    function sendCredits(\n        uint16 _dstChainId,\n        uint256 _srcPoolId,\n        uint256 _dstPoolId,\n        address payable _refundAddress\n    ) external payable;\n\n    function quoteLayerZeroFee(\n        uint16 _dstChainId,\n        uint8 _functionType,\n        bytes calldata _toAddress,\n        bytes calldata _transferAndCallPayload,\n        lzTxObj memory _lzTxParams\n    ) external view returns (uint256, uint256);\n}\n"
    },
    "src/bridges/interfaces/IStargateReceiver.sol": {
      "content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.4;\n\ninterface IStargateReceiver {\n    function sgReceive(\n        uint16 _srcChainId, // the remote chainId sending the tokens\n        bytes memory _srcAddress, // the remote Bridge address\n        uint256 _nonce,\n        address _token, // the token contract on the local chain\n        uint256 amountLD, // the qty of local _token contract tokens\n        bytes memory payload\n    ) external;\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 amount\n    ) external returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        if (returndata.length > 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}\n"
    },
    "src/common/helpers/DiamondReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.4;\n\n/// @title Reentrancy Guard\n/// @notice Abstract contract to provide protection against reentrancy\nabstract contract ReentrancyGuard {\n    //////////////////////////////////////////////////////////////\n    ////////////////////////// Storage ///////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    bytes32 private constant NAMESPACE =\n        keccak256(\"io.etherspot.helpers.reentrancyguard\");\n\n    //////////////////////////////////////////////////////////////\n    ////////////////////////// Structs ///////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    struct ReentrancyStorage {\n        uint256 status;\n    }\n\n    //////////////////////////////////////////////////////////////\n    ////////////////////////// Errors ////////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    error ReentrancyError();\n\n    //////////////////////////////////////////////////////////////\n    ///////////////////////// Constants //////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    uint256 private constant _NOT_ENTERED = 0;\n    uint256 private constant _ENTERED = 1;\n\n    //////////////////////////////////////////////////////////////\n    ///////////////////////// Modifiers ///////////////////////////\n    //////////////////////////////////////////////////////////////\n\n    modifier nonReentrant() {\n        ReentrancyStorage storage s = reentrancyStorage();\n        if (s.status == _ENTERED) revert ReentrancyError();\n        s.status = _ENTERED;\n        _;\n        s.status = _NOT_ENTERED;\n    }\n\n    //////////////////////////////////////////////////////////////\n    ////////////////////// Private Functions /////////////////////\n    //////////////////////////////////////////////////////////////\n\n    /// @dev fetch local storage\n    function reentrancyStorage()\n        private\n        pure\n        returns (ReentrancyStorage storage data)\n    {\n        bytes32 position = NAMESPACE;\n        // solhint-disable-next-line no-inline-assembly\n        assembly {\n            data.slot := position\n        }\n    }\n}\n"
    },
    "src/bridges/errors/GenericErrors.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// solhint-disable-next-line\npragma solidity 0.8.4;\n\nerror InvalidAmount();\nerror TokenAddressIsZero();\nerror CannotBridgeToSameNetwork();\nerror ZeroPostSwapBalance();\nerror InvalidBridgeConfigLength();\nerror NoSwapDataProvided();\nerror NativeValueWithERC();\nerror ContractCallNotAllowed();\nerror NullAddrIsNotAValidSpender();\nerror NullAddrIsNotAnERC20Token();\nerror NoTransferToNullAddress();\nerror NativeAssetTransferFailed();\nerror InvalidContract();\nerror InvalidConfig();\nerror ZeroAddressProvided();\n"
    },
    "src/bridges/errors/StargateErrors.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// solhint-disable-next-line\npragma solidity 0.8.4;\n\nerror SenderNotStargateRouter();\nerror NoMsgValueForCrossChainMessage();\nerror StargateRouterAddressZero();\nerror InvalidSourcePoolId();\nerror InvalidDestinationPoolId();\n"
    },
    "src/bridges/libs/LibDiamond.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4 <0.9.0;\n\nimport {IDiamondCut} from \"../interfaces/IDiamondCut.sol\";\n\nlibrary LibDiamond {\n    bytes32 internal constant DIAMOND_STORAGE_POSITION =\n        keccak256(\"diamond.standard.diamond.storage\");\n\n    struct FacetAddressAndPosition {\n        address facetAddress;\n        uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array\n    }\n\n    struct FacetFunctionSelectors {\n        bytes4[] functionSelectors;\n        uint256 facetAddressPosition; // position of facetAddress in facetAddresses array\n    }\n\n    struct DiamondStorage {\n        // maps function selector to the facet address and\n        // the position of the selector in the facetFunctionSelectors.selectors array\n        mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition;\n        // maps facet addresses to function selectors\n        mapping(address => FacetFunctionSelectors) facetFunctionSelectors;\n        // facet addresses\n        address[] facetAddresses;\n        // Used to query if a contract implements an interface.\n        // Used to implement ERC-165.\n        mapping(bytes4 => bool) supportedInterfaces;\n        // owner of the contract\n        address contractOwner;\n    }\n\n    function diamondStorage()\n        internal\n        pure\n        returns (DiamondStorage storage ds)\n    {\n        bytes32 position = DIAMOND_STORAGE_POSITION;\n        // solhint-disable-next-line no-inline-assembly\n        assembly {\n            ds.slot := position\n        }\n    }\n\n    event OwnershipTransferred(\n        address indexed previousOwner,\n        address indexed newOwner\n    );\n\n    function setContractOwner(address _newOwner) internal {\n        DiamondStorage storage ds = diamondStorage();\n        address previousOwner = ds.contractOwner;\n        ds.contractOwner = _newOwner;\n        emit OwnershipTransferred(previousOwner, _newOwner);\n    }\n\n    function contractOwner() internal view returns (address contractOwner_) {\n        contractOwner_ = diamondStorage().contractOwner;\n    }\n\n    function enforceIsContractOwner() internal view {\n        require(\n            msg.sender == diamondStorage().contractOwner,\n            \"LibDiamond: Must be contract owner\"\n        );\n    }\n\n    event DiamondCut(\n        IDiamondCut.FacetCut[] _diamondCut,\n        address _init,\n        bytes _calldata\n    );\n\n    // Internal function version of diamondCut\n    function diamondCut(\n        IDiamondCut.FacetCut[] memory _diamondCut,\n        address _init,\n        bytes memory _calldata\n    ) internal {\n        for (\n            uint256 facetIndex;\n            facetIndex < _diamondCut.length;\n            facetIndex++\n        ) {\n            IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action;\n            if (action == IDiamondCut.FacetCutAction.Add) {\n                addFunctions(\n                    _diamondCut[facetIndex].facetAddress,\n                    _diamondCut[facetIndex].functionSelectors\n                );\n            } else if (action == IDiamondCut.FacetCutAction.Replace) {\n                replaceFunctions(\n                    _diamondCut[facetIndex].facetAddress,\n                    _diamondCut[facetIndex].functionSelectors\n                );\n            } else if (action == IDiamondCut.FacetCutAction.Remove) {\n                removeFunctions(\n                    _diamondCut[facetIndex].facetAddress,\n                    _diamondCut[facetIndex].functionSelectors\n                );\n            } else {\n                revert(\"LibDiamondCut: Incorrect FacetCutAction\");\n            }\n        }\n        emit DiamondCut(_diamondCut, _init, _calldata);\n        initializeDiamondCut(_init, _calldata);\n    }\n\n    function addFunctions(\n        address _facetAddress,\n        bytes4[] memory _functionSelectors\n    ) internal {\n        require(\n            _functionSelectors.length > 0,\n            \"LibDiamondCut: No selectors in facet to cut\"\n        );\n        DiamondStorage storage ds = diamondStorage();\n        require(\n            _facetAddress != address(0),\n            \"LibDiamondCut: Add facet can't be address(0)\"\n        );\n        uint96 selectorPosition = uint96(\n            ds.facetFunctionSelectors[_facetAddress].functionSelectors.length\n        );\n        // add new facet address if it does not exist\n        if (selectorPosition == 0) {\n            addFacet(ds, _facetAddress);\n        }\n        for (\n            uint256 selectorIndex;\n            selectorIndex < _functionSelectors.length;\n            selectorIndex++\n        ) {\n            bytes4 selector = _functionSelectors[selectorIndex];\n            address oldFacetAddress = ds\n                .selectorToFacetAndPosition[selector]\n                .facetAddress;\n            require(\n                oldFacetAddress == address(0),\n                \"LibDiamondCut: Can't add function that already exists\"\n            );\n            addFunction(ds, selector, selectorPosition, _facetAddress);\n            selectorPosition++;\n        }\n    }\n\n    function replaceFunctions(\n        address _facetAddress,\n        bytes4[] memory _functionSelectors\n    ) internal {\n        require(\n            _functionSelectors.length > 0,\n            \"LibDiamondCut: No selectors in facet to cut\"\n        );\n        DiamondStorage storage ds = diamondStorage();\n        require(\n            _facetAddress != address(0),\n            \"LibDiamondCut: Add facet can't be address(0)\"\n        );\n        uint96 selectorPosition = uint96(\n            ds.facetFunctionSelectors[_facetAddress].functionSelectors.length\n        );\n        // add new facet address if it does not exist\n        if (selectorPosition == 0) {\n            addFacet(ds, _facetAddress);\n        }\n        for (\n            uint256 selectorIndex;\n            selectorIndex < _functionSelectors.length;\n            selectorIndex++\n        ) {\n            bytes4 selector = _functionSelectors[selectorIndex];\n            address oldFacetAddress = ds\n                .selectorToFacetAndPosition[selector]\n                .facetAddress;\n            require(\n                oldFacetAddress != _facetAddress,\n                \"LibDiamondCut: Can't replace function with same function\"\n            );\n            removeFunction(ds, oldFacetAddress, selector);\n            addFunction(ds, selector, selectorPosition, _facetAddress);\n            selectorPosition++;\n        }\n    }\n\n    function removeFunctions(\n        address _facetAddress,\n        bytes4[] memory _functionSelectors\n    ) internal {\n        require(\n            _functionSelectors.length > 0,\n            \"LibDiamondCut: No selectors in facet to cut\"\n        );\n        DiamondStorage storage ds = diamondStorage();\n        // if function does not exist then do nothing and return\n        require(\n            _facetAddress == address(0),\n            \"LibDiamondCut: Remove facet address must be address(0)\"\n        );\n        for (\n            uint256 selectorIndex;\n            selectorIndex < _functionSelectors.length;\n            selectorIndex++\n        ) {\n            bytes4 selector = _functionSelectors[selectorIndex];\n            address oldFacetAddress = ds\n                .selectorToFacetAndPosition[selector]\n                .facetAddress;\n            removeFunction(ds, oldFacetAddress, selector);\n        }\n    }\n\n    function addFacet(DiamondStorage storage ds, address _facetAddress)\n        internal\n    {\n        enforceHasContractCode(\n            _facetAddress,\n            \"LibDiamondCut: New facet has no code\"\n        );\n        ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds\n            .facetAddresses\n            .length;\n        ds.facetAddresses.push(_facetAddress);\n    }\n\n    function addFunction(\n        DiamondStorage storage ds,\n        bytes4 _selector,\n        uint96 _selectorPosition,\n        address _facetAddress\n    ) internal {\n        ds\n            .selectorToFacetAndPosition[_selector]\n            .functionSelectorPosition = _selectorPosition;\n        ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(\n            _selector\n        );\n        ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress;\n    }\n\n    function removeFunction(\n        DiamondStorage storage ds,\n        address _facetAddress,\n        bytes4 _selector\n    ) internal {\n        require(\n            _facetAddress != address(0),\n            \"LibDiamondCut: Can't remove function that doesn't exist\"\n        );\n        // an immutable function is a function defined directly in a diamond\n        require(\n            _facetAddress != address(this),\n            \"LibDiamondCut: Can't remove immutable function\"\n        );\n        // replace selector with last selector, then delete last selector\n        uint256 selectorPosition = ds\n            .selectorToFacetAndPosition[_selector]\n            .functionSelectorPosition;\n        uint256 lastSelectorPosition = ds\n            .facetFunctionSelectors[_facetAddress]\n            .functionSelectors\n            .length - 1;\n        // if not the same then replace _selector with lastSelector\n        if (selectorPosition != lastSelectorPosition) {\n            bytes4 lastSelector = ds\n                .facetFunctionSelectors[_facetAddress]\n                .functionSelectors[lastSelectorPosition];\n            ds.facetFunctionSelectors[_facetAddress].functionSelectors[\n                    selectorPosition\n                ] = lastSelector;\n            ds\n                .selectorToFacetAndPosition[lastSelector]\n                .functionSelectorPosition = uint96(selectorPosition);\n        }\n        // delete the last selector\n        ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop();\n        delete ds.selectorToFacetAndPosition[_selector];\n\n        // if no more selectors for facet address then delete the facet address\n        if (lastSelectorPosition == 0) {\n            // replace facet address with last facet address and delete last facet address\n            uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1;\n            uint256 facetAddressPosition = ds\n                .facetFunctionSelectors[_facetAddress]\n                .facetAddressPosition;\n            if (facetAddressPosition != lastFacetAddressPosition) {\n                address lastFacetAddress = ds.facetAddresses[\n                    lastFacetAddressPosition\n                ];\n                ds.facetAddresses[facetAddressPosition] = lastFacetAddress;\n                ds\n                    .facetFunctionSelectors[lastFacetAddress]\n                    .facetAddressPosition = facetAddressPosition;\n            }\n            ds.facetAddresses.pop();\n            delete ds\n                .facetFunctionSelectors[_facetAddress]\n                .facetAddressPosition;\n        }\n    }\n\n    function initializeDiamondCut(address _init, bytes memory _calldata)\n        internal\n    {\n        if (_init == address(0)) {\n            require(\n                _calldata.length == 0,\n                \"LibDiamondCut: _init is address(0) but_calldata is not empty\"\n            );\n        } else {\n            require(\n                _calldata.length > 0,\n                \"LibDiamondCut: _calldata is empty but _init is not address(0)\"\n            );\n            if (_init != address(this)) {\n                enforceHasContractCode(\n                    _init,\n                    \"LibDiamondCut: _init address has no code\"\n                );\n            }\n            // solhint-disable-next-line avoid-low-level-calls\n            (bool success, bytes memory error) = _init.delegatecall(_calldata);\n            if (!success) {\n                if (error.length > 0) {\n                    // bubble up the error\n                    revert(string(error));\n                } else {\n                    revert(\"LibDiamondCut: _init function reverted\");\n                }\n            }\n        }\n    }\n\n    function enforceHasContractCode(\n        address _contract,\n        string memory _errorMessage\n    ) internal view {\n        uint256 contractSize;\n        // solhint-disable-next-line no-inline-assembly\n        assembly {\n            contractSize := extcodesize(_contract)\n        }\n        require(contractSize > 0, _errorMessage);\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length > 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}\n"
    },
    "src/bridges/interfaces/IDiamondCut.sol": {
      "content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4 <0.9.0;\n\ninterface IDiamondCut {\n    enum FacetCutAction {\n        Add,\n        Replace,\n        Remove\n    }\n    // Add=0, Replace=1, Remove=2\n\n    struct FacetCut {\n        address facetAddress;\n        FacetCutAction action;\n        bytes4[] functionSelectors;\n    }\n\n    /// @notice Add/replace/remove any number of functions and optionally execute\n    ///         a function with delegatecall\n    /// @param _diamondCut Contains the facet addresses and function selectors\n    /// @param _init The address of the contract or facet to execute _calldata\n    /// @param _calldata A function call, including function selector and arguments\n    ///                  _calldata is executed with delegatecall on _init\n    function diamondCut(\n        FacetCut[] calldata _diamondCut,\n        address _init,\n        bytes calldata _calldata\n    ) external;\n\n    event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);\n}\n"
    },
    "src/bridges/libs/LibAsset.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED\n// solhint-disable-next-line\npragma solidity 0.8.4;\nimport {NullAddrIsNotAnERC20Token, NullAddrIsNotAValidSpender, NoTransferToNullAddress, InvalidAmount, NativeValueWithERC, NativeAssetTransferFailed} from \"../errors/GenericErrors.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\n/// @title LibAsset\n/// @author Connext <support@connext.network>\n/// @notice This library contains helpers for dealing with onchain transfers\n///         of assets, including accounting for the native asset `assetId`\n///         conventions and any noncompliant ERC20 transfers\nlibrary LibAsset {\n    uint256 private constant MAX_INT = type(uint256).max;\n\n    address internal constant NULL_ADDRESS =\n        0x0000000000000000000000000000000000000000; //address(0)\n\n    /// @dev All native assets use the empty address for their asset id\n    ///      by convention\n\n    address internal constant NATIVE_ASSETID = NULL_ADDRESS; //address(0)\n\n    /// @notice Gets the balance of the inheriting contract for the given asset\n    /// @param assetId The asset identifier to get the balance of\n    /// @return Balance held by contracts using this library\n    function getOwnBalance(address assetId) internal view returns (uint256) {\n        return\n            assetId == NATIVE_ASSETID\n                ? address(this).balance\n                : IERC20(assetId).balanceOf(address(this));\n    }\n\n    /// @notice Transfers ether from the inheriting contract to a given\n    ///         recipient\n    /// @param recipient Address to send ether to\n    /// @param amount Amount to send to given recipient\n    function transferNativeAsset(address payable recipient, uint256 amount)\n        private\n    {\n        if (recipient == NULL_ADDRESS) revert NoTransferToNullAddress();\n        // solhint-disable-next-line avoid-low-level-calls\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        if (!success) revert NativeAssetTransferFailed();\n    }\n\n    /// @notice Gives MAX approval for another address to spend tokens\n    /// @param assetId Token address to transfer\n    /// @param spender Address to give spend approval to\n    /// @param amount Amount to approve for spending\n    function maxApproveERC20(\n        IERC20 assetId,\n        address spender,\n        uint256 amount\n    ) internal {\n        if (address(assetId) == NATIVE_ASSETID) return