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{
"language": "Solidity",
"sources": {
"contracts/handlers/GenericHandlerUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.2;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/interfaces/IERC20Upgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol\";\nimport \"../interfaces/IGenericHandler.sol\";\nimport \"../interfaces/iRouterCrossTalk.sol\";\nimport \"../interfaces/iGBridge.sol\";\nimport \"../interfaces/IFeeManagerGeneric.sol\";\n\n/// @title Handles generic deposits and deposit executions.\n/// @author Router Protocol\n/// @notice This contract is intended to be used with the Bridge contract.\ncontract GenericHandlerUpgradeable is Initializable, AccessControlUpgradeable {\n using AddressUpgradeable for address;\n using SafeERC20Upgradeable for IERC20Upgradeable;\n // ----------------------------------------------------------------- //\n // DS Section Starts //\n // ----------------------------------------------------------------- //\n\n bytes32 public constant BRIDGE_ROLE = keccak256(\"BRIDGE_ROLE\");\n\n bytes32 public constant FEE_SETTER_ROLE = keccak256(\"FEE_SETTER_ROLE\");\n\n iGBridge public bridge;\n\n iFeeManagerGeneric private feeManager;\n\n bytes32 private resourceID;\n\n mapping(uint8 => mapping(uint64 => DepositRecord)) private _depositRecords;\n\n mapping(uint8 => mapping(uint64 => ExecuteRecord)) private _executeRecords;\n\n struct ExecuteRecord {\n bool isExecuted;\n bool _status;\n bytes _callback;\n }\n\n struct DepositRecord {\n bytes32 _resourceID;\n uint8 _srcChainID;\n uint8 _destChainID;\n uint64 _nonce;\n address _srcAddress;\n address _destAddress;\n bytes4 _selector;\n bytes data;\n bytes32 hash;\n uint256 _gas;\n address _feeToken;\n }\n\n struct RouterLinker {\n address _rSyncContract;\n uint8 _chainID;\n address _linkedContract;\n }\n\n mapping(uint8 => uint256) private defaultGas;\n mapping(uint8 => uint256) private defaultGasPrice;\n mapping(uint8 => mapping(uint64 => FeeRecord)) private _feeRecord;\n\n struct FeeRecord {\n uint8 _destChainID;\n uint64 _nonce;\n address _feeToken;\n uint256 _gasLimit;\n uint256 _gasPrice;\n uint256 _feeAmount;\n }\n\n uint8 private _chainId;\n\n event ReplayEvent(\n uint8 indexed destinationChainID,\n bytes32 indexed resourceID,\n uint64 indexed depositNonce,\n uint256 widgetID\n );\n\n // ----------------------------------------------------------------- //\n // DS Section Ends //\n // ----------------------------------------------------------------- //\n\n // ----------------------------------------------------------------- //\n // Init Section Starts //\n // ----------------------------------------------------------------- //\n\n function __GenericHandlerUpgradeable_init(address _bridge, bytes32 _resourceID) internal initializer {\n __AccessControl_init();\n\n _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);\n _setupRole(BRIDGE_ROLE, _bridge);\n _setupRole(FEE_SETTER_ROLE, msg.sender);\n\n bridge = iGBridge(_bridge);\n resourceID = _resourceID;\n }\n\n function __GenericHandlerUpgradeable_init_unchained() internal initializer {}\n\n function initialize(address _bridge, bytes32 _resourceID) external initializer {\n __GenericHandlerUpgradeable_init(_bridge, _resourceID);\n }\n\n // ----------------------------------------------------------------- //\n // Init Section Ends //\n // ----------------------------------------------------------------- //\n\n // ----------------------------------------------------------------- //\n // Mapping Section Starts //\n // ----------------------------------------------------------------- //\n\n /// @notice Function Maps the two contracts on cross chain enviroment\n /// @param linker Linker object to be verified\n function MapContract(RouterLinker calldata linker) external {\n iRouterCrossTalk crossTalk = iRouterCrossTalk(linker._rSyncContract);\n require(\n msg.sender == crossTalk.fetchLinkSetter(),\n \"Router Generichandler : Only Link Setter can map contracts\"\n );\n crossTalk.Link{ gas: 57786 }(linker._chainID, linker._linkedContract);\n }\n\n /// @notice Function UnMaps the two contracts on cross chain enviroment\n /// @param linker Linker object to be verified\n\n function UnMapContract(RouterLinker calldata linker) external {\n iRouterCrossTalk crossTalk = iRouterCrossTalk(linker._rSyncContract);\n require(\n msg.sender == crossTalk.fetchLinkSetter(),\n \"Router Generichandler : Only Link Setter can unmap contracts\"\n );\n crossTalk.Unlink{ gas: 35035 }(linker._chainID);\n }\n\n // ----------------------------------------------------------------- //\n // Mapping Section Ends //\n // ----------------------------------------------------------------- //\n\n // ----------------------------------------------------------------- //\n // Deposit Section Starts //\n // ----------------------------------------------------------------- //\n\n /// @notice Function fired to fetch chain ID from bridge\n /// @return chainId for this chain\n function fetch_chainID() external view returns (uint8) {\n return _chainId;\n }\n\n /// @notice Function fired to trigger Cross Chain Communication\n /// @param _destChainID Destination ChainID\n /// @param _data Data for the cross chain function.\n /// @param _gasLimit Gas Limit allowed for the transaction.\n /// @param _gasPrice Gas Price for the transaction.\n /// @param _feeToken Fee Token for the transaction.\n function genericDeposit(\n uint8 _destChainID,\n bytes calldata _data,\n uint256 _gasLimit,\n uint256 _gasPrice,\n address _feeToken\n ) external returns (uint64) {\n require(defaultGas[_destChainID] != 0, \"Router Generichandler : Destination Gas Not Set\");\n require(defaultGasPrice[_destChainID] != 0, \"Router Generichandler : Destination Gas Price Not Set\");\n\n uint64 _nonce = bridge.genericDeposit(_destChainID, resourceID);\n iRouterCrossTalk crossTalk = iRouterCrossTalk(msg.sender);\n address destAddress = crossTalk.fetchLink(_destChainID);\n\n uint256 gasLimit = _gasLimit < defaultGas[_destChainID] ? defaultGas[_destChainID] : _gasLimit;\n uint256 gasPrice = _gasPrice < defaultGasPrice[_destChainID] ? defaultGasPrice[_destChainID] : _gasPrice;\n\n bytes4 _selector = abi.decode(_data, (bytes4));\n\n _genericDeposit(_nonce, _destChainID, _selector, _data, gasLimit, gasPrice, _feeToken, destAddress);\n return _nonce;\n }\n\n /// @notice Function fired to trigger Cross Chain Communication.\n /// @param _nonce Nonce for the deposit.\n /// @param _destChainID Destination ChainID.\n /// @param _selector Selector for the cross chain function.\n /// @param _data Data for the cross chain function.\n /// @param _gasLimit Gas Limit allowed for the transaction.\n /// @param _gasPrice Gas Price for the transaction.\n /// @param _feeToken Fee Token for the transaction.\n /// @param _destAddress Address of crosstalk on destination chain.\n function _genericDeposit(\n uint64 _nonce,\n uint8 _destChainID,\n bytes4 _selector,\n bytes calldata _data,\n uint256 _gasLimit,\n uint256 _gasPrice,\n address _feeToken,\n address _destAddress\n ) internal {\n uint256 fees = deductFee(_destChainID, _feeToken, _gasLimit, _gasPrice, false);\n bytes32 hash = keccak256(abi.encode(_destChainID, _nonce));\n\n _depositRecords[_destChainID][_nonce] = DepositRecord(\n resourceID,\n _chainId,\n _destChainID,\n _nonce,\n msg.sender,\n _destAddress,\n _selector,\n _data,\n hash,\n _gasLimit,\n _feeToken\n );\n\n _feeRecord[_destChainID][_nonce] = FeeRecord(_destChainID, _nonce, _feeToken, _gasLimit, _gasPrice, fees);\n }\n\n /// @notice Function to replay a transaction which was stuck due to underpricing of gas\n /// @param _destChainID Destination ChainID\n /// @param _depositNonce Nonce for the transaction.\n /// @param _gasLimit Gas limit allowed for the transaction.\n /// @param _gasPrice Gas Price for the transaction.\n function replayGenericDeposit(\n uint8 _destChainID,\n uint64 _depositNonce,\n uint256 _gasLimit,\n uint256 _gasPrice\n ) external {\n require(defaultGas[_destChainID] != 0, \"Router Generichandler : Destination Gas Not Set\");\n require(defaultGasPrice[_destChainID] != 0, \"Router Generichandler : Destination Gas Price Not Set\");\n\n DepositRecord storage record = _depositRecords[_destChainID][_depositNonce];\n require(record._feeToken != address(0), \"GenericHandler: Record not found\");\n require(record._srcAddress == msg.sender, \"GenericHandler: Unauthorized transaction\");\n\n uint256 gasLimit = _gasLimit < defaultGas[_destChainID] ? defaultGas[_destChainID] : _gasLimit;\n uint256 gasPrice = _gasPrice < defaultGasPrice[_destChainID] ? defaultGasPrice[_destChainID] : _gasPrice;\n\n uint256 fee = deductFee(_destChainID, record._feeToken, gasLimit, gasPrice, true);\n\n _feeRecord[_destChainID][_depositNonce]._gasLimit = gasLimit;\n _feeRecord[_destChainID][_depositNonce]._gasPrice = gasPrice;\n _feeRecord[_destChainID][_depositNonce]._feeAmount += fee;\n\n emit ReplayEvent(_destChainID, resourceID, record._nonce, 0);\n }\n\n /// @notice Function fetches deposit record\n /// @param _ChainID CHainID of the deposit\n /// @param _nonce Nonce of the deposit\n /// @return DepositRecord\n function fetchDepositRecord(uint8 _ChainID, uint64 _nonce) external view returns (DepositRecord memory) {\n return _depositRecords[_ChainID][_nonce];\n }\n\n /// @notice Function fetches fee record\n /// @param _ChainID Destination ChainID of the deposit\n /// @param _nonce Nonce of the deposit\n /// @return feeRecord\n function fetchFeeRecord(uint8 _ChainID, uint64 _nonce) external view returns (FeeRecord memory) {\n return _feeRecord[_ChainID][_nonce];\n }\n\n /// @notice Function fetches execute record\n /// @param _ChainID CHainID of the deposit\n /// @param _nonce Nonce of the deposit\n /// @return ExecuteRecord\n function fetchExecuteRecord(uint8 _ChainID, uint64 _nonce) external view returns (ExecuteRecord memory) {\n return _executeRecords[_ChainID][_nonce];\n }\n\n /// @notice Function fetches resourceId\n function fetchResourceID() external view returns (bytes32) {\n return resourceID;\n }\n\n // ----------------------------------------------------------------- //\n // Deposit Section Ends //\n // ----------------------------------------------------------------- //\n\n // ----------------------------------------------------------------- //\n // Execute Section Starts //\n // ----------------------------------------------------------------- //\n\n /// @notice Function Executes a cross Chain Request on destination chain and can only be triggered by bridge\n /// @dev Can only be called by the bridge\n /// @param _data Cross chain Data recived from relayer\n /// @return true\n function executeProposal(bytes calldata _data) external onlyRole(BRIDGE_ROLE) returns (bool) {\n DepositRecord memory depositData = decodeData(_data);\n require(\n _executeRecords[depositData._srcChainID][depositData._nonce].isExecuted == false,\n \"GenericHandler: Already executed\"\n );\n if (!depositData._destAddress.isContract()) {\n _executeRecords[depositData._srcChainID][depositData._nonce]._callback = \"\";\n _executeRecords[depositData._srcChainID][depositData._nonce]._status = false;\n _executeRecords[depositData._srcChainID][depositData._nonce].isExecuted = true;\n return true;\n }\n (bool success, bytes memory callback) = depositData._destAddress.call(\n abi.encodeWithSelector(\n 0x06d07c59, // routerSync(uint8,address,bytes)\n depositData._srcChainID,\n depositData._srcAddress,\n depositData.data\n )\n );\n _executeRecords[depositData._srcChainID][depositData._nonce]._callback = callback;\n _executeRecords[depositData._srcChainID][depositData._nonce]._status = success;\n _executeRecords[depositData._srcChainID][depositData._nonce].isExecuted = true;\n return true;\n }\n\n /// @notice Function Decodes the data element recived from bridge\n /// @param _data Cross chain Data recived from relayer\n /// @return DepositRecord\n function decodeData(bytes calldata _data) internal pure returns (DepositRecord memory) {\n DepositRecord memory depositData;\n (\n depositData._srcChainID,\n depositData._nonce,\n depositData._srcAddress,\n depositData._destAddress,\n depositData.data\n ) = abi.decode(_data, (uint8, uint64, address, address, bytes));\n\n return depositData;\n }\n\n // ----------------------------------------------------------------- //\n // Execute Section Ends //\n // ----------------------------------------------------------------- //\n\n // ----------------------------------------------------------------- //\n // Fee Manager Section Starts //\n // ----------------------------------------------------------------- //\n\n /// @notice Function fetches fee manager address\n /// @return feeManager\n function fetchFeeManager() external view returns (address) {\n return address(feeManager);\n }\n\n /// @notice Function sets fee manager address\n /// @dev can only be called by default admin address\n /// @param _feeManager Address of the fee manager.\n function setFeeManager(address _feeManager) public onlyRole(DEFAULT_ADMIN_ROLE) {\n feeManager = iFeeManagerGeneric(_feeManager);\n }\n\n /**\n @notice Function Fetches the default Gas for a chain ID .\n **/\n function fetchDefaultGas(uint8 _chainID) external view returns (uint256) {\n return defaultGas[_chainID];\n }\n\n /**\n @notice Function Sets default gas fees for chain.\n @param _chainID ChainID of the .\n @param _defaultGas Default gas for a chainid.\n **/\n function setDefaultGas(uint8 _chainID, uint256 _defaultGas) public onlyRole(DEFAULT_ADMIN_ROLE) {\n defaultGas[_chainID] = _defaultGas;\n }\n\n /**\n @notice Function Fetches the default Gas Price for a chain ID .\n **/\n function fetchDefaultGasPrice(uint8 _chainID) external view returns (uint256) {\n return defaultGasPrice[_chainID];\n }\n\n /**\n @notice Function Sets default gas price for chain.\n @param _chainID ChainID of the .\n @param _defaultGasPrice Default gas for a chainid.\n **/\n function setDefaultGasPrice(uint8 _chainID, uint256 _defaultGasPrice) public onlyRole(DEFAULT_ADMIN_ROLE) {\n defaultGasPrice[_chainID] = _defaultGasPrice;\n }\n\n /**\n @notice Function Sets chainId for chain.\n @param chainId ChainID of the .\n **/\n function setChainId(uint8 chainId) public onlyRole(DEFAULT_ADMIN_ROLE) {\n _chainId = chainId;\n }\n\n /// @notice Function Sets the fee for a fee token on to feemanager\n /// @dev Can only be called by fee setter.\n /// @param destinationChainID ID of the destination chain.\n /// @param feeTokenAddress Address of fee token.\n /// @param feeFactor FeeFactor for the cross chain call.\n /// @param bridgeFee Base Fee for bridge.\n /// @param accepted Bool value for enabling and disabling feetoken.\n function setFees(\n uint8 destinationChainID,\n address feeTokenAddress,\n uint256 feeFactor,\n uint256 bridgeFee,\n bool accepted\n ) external onlyRole(FEE_SETTER_ROLE) {\n feeManager.setFee(destinationChainID, feeTokenAddress, feeFactor, bridgeFee, accepted);\n }\n\n /// @notice Calculates fees for a cross chain Call.\n /// @param destinationChainID id of the destination chain.\n /// @param feeTokenAddress Address fee token.\n /// @param gasLimit Gas limit required for cross chain call.\n /// @param gasPrice Gas Price for the transaction.\n /// @return total fees\n function calculateFees(\n uint8 destinationChainID,\n address feeTokenAddress,\n uint256 gasLimit,\n uint256 gasPrice\n ) external view returns (uint256) {\n require(defaultGas[destinationChainID] != 0, \"GenericHandler : Destination Gas Not Set\");\n require(defaultGasPrice[destinationChainID] != 0, \"GenericHandler : Destination Gas Price Not Set\");\n\n uint8 feeTokenDecimals = IERC20MetadataUpgradeable(feeTokenAddress).decimals();\n uint256 _gasLimit = gasLimit < defaultGas[destinationChainID] ? defaultGas[destinationChainID] : gasLimit;\n uint256 _gasPrice = gasPrice < defaultGasPrice[destinationChainID]\n ? defaultGasPrice[destinationChainID]\n : gasPrice;\n\n (uint256 feeFactorX10e6, uint256 bridgeFees) = feeManager.getFee(destinationChainID, feeTokenAddress);\n\n if (feeTokenDecimals < 18) {\n uint8 decimalsToDivide = 18 - feeTokenDecimals;\n return bridgeFees + (feeFactorX10e6 * _gasPrice * _gasLimit) / (10**(decimalsToDivide + 6));\n }\n\n return (feeFactorX10e6 * _gasLimit * _gasPrice)/(10**6) + bridgeFees;\n }\n\n /// @notice Function deducts fees for a cross chain Call.\n /// @param destinationChainID id of the destination chain.\n /// @param feeTokenAddress Address fee token.\n /// @param gasLimit Gas limit required for cross chain call.\n /// @param gasPrice Gas Price for the transaction.\n /// @param isReplay True if it is a replay tx.\n /// @return totalFees\n function deductFee(\n uint8 destinationChainID,\n address feeTokenAddress,\n uint256 gasLimit,\n uint256 gasPrice,\n bool isReplay\n ) internal returns (uint256) {\n uint8 feeTokenDecimals = IERC20MetadataUpgradeable(feeTokenAddress).decimals();\n\n (uint256 feeFactorX10e6, uint256 bridgeFees) = feeManager.getFee(destinationChainID, feeTokenAddress);\n\n if (isReplay) {\n bridgeFees = 0;\n }\n\n IERC20Upgradeable token = IERC20Upgradeable(feeTokenAddress);\n uint256 fees;\n\n if (feeTokenDecimals < 18) {\n uint8 decimalsToDivide = 18 - feeTokenDecimals;\n fees = bridgeFees + (feeFactorX10e6 * gasPrice * gasLimit) / (10**(decimalsToDivide + 6));\n } else {\n fees = (feeFactorX10e6 * gasLimit * gasPrice)/(10**6) + bridgeFees;\n }\n\n token.safeTransferFrom(msg.sender, address(feeManager), fees);\n return fees;\n }\n\n /// @notice Used to manually release ERC20 tokens from FeeManager.\n /// @dev Can only be called by default admin\n /// @param tokenAddress Address of token contract to release.\n /// @param recipient Address to release tokens to.\n /// @param amount The amount of ERC20 tokens to release.\n function withdrawFees(\n address tokenAddress,\n address recipient,\n uint256 amount\n ) external virtual onlyRole(DEFAULT_ADMIN_ROLE) {\n feeManager.withdrawFee(tokenAddress, recipient, amount);\n }\n\n /// @notice Function to set the bridge address\n /// @dev Can only be called by default admin\n /// @param _bridge Address of the bridge\n function setBridge(address _bridge) external onlyRole(DEFAULT_ADMIN_ROLE) {\n bridge = iGBridge(_bridge);\n }\n\n // ----------------------------------------------------------------- //\n // Fee Manager Section Ends //\n // ----------------------------------------------------------------- //\n}\n"
},
"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the\n * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() initializer {}\n * ```\n * ====\n */\nabstract contract Initializable {\n /**\n * @dev Indicates that the contract has been initialized.\n */\n bool private _initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private _initializing;\n\n /**\n * @dev Modifier to protect an initializer function from being invoked twice.\n */\n modifier initializer() {\n // If the contract is initializing we ignore whether _initialized is set in order to support multiple\n // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the\n // contract may have been reentered.\n require(_initializing ? _isConstructor() : !_initialized, \"Initializable: contract is already initialized\");\n\n bool isTopLevelCall = !_initializing;\n if (isTopLevelCall) {\n _initializing = true;\n _initialized = true;\n }\n\n _;\n\n if (isTopLevelCall) {\n _initializing = false;\n }\n }\n\n /**\n * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n * {initializer} modifier, directly or indirectly.\n */\n modifier onlyInitializing() {\n require(_initializing, \"Initializable: contract is not initializing\");\n _;\n }\n\n function _isConstructor() private view returns (bool) {\n return !AddressUpgradeable.isContract(address(this));\n }\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\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 function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n assembly {\n size := extcodesize(account)\n }\n return size > 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 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"
},
"@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControlUpgradeable.sol\";\nimport \"../utils/ContextUpgradeable.sol\";\nimport \"../utils/StringsUpgradeable.sol\";\nimport \"../utils/introspection/ERC165Upgradeable.sol\";\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module that allows children to implement role-based access\n * control mechanisms. This is a lightweight version that doesn't allow enumerating role\n * members except through off-chain means by accessing the contract event logs. Some\n * applications may benefit from on-chain enumerability, for those cases see\n * {AccessControlEnumerable}.\n *\n * Roles are referred to by their `bytes32` identifier. These should be exposed\n * in the external API and be unique. The best way to achieve this is by\n * using `public constant` hash digests:\n *\n * ```\n * bytes32 public constant MY_ROLE = keccak256(\"MY_ROLE\");\n * ```\n *\n * Roles can be used to represent a set of permissions. To restrict access to a\n * function call, use {hasRole}:\n *\n * ```\n * function foo() public {\n * require(hasRole(MY_ROLE, msg.sender));\n * ...\n * }\n * ```\n *\n * Roles can be granted and revoked dynamically via the {grantRole} and\n * {revokeRole} functions. Each role has an associated admin role, and only\n * accounts that have a role's admin role can call {grantRole} and {revokeRole}.\n *\n * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means\n * that only accounts with this role will be able to grant or revoke other\n * roles. More complex role relationships can be created by using\n * {_setRoleAdmin}.\n *\n * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to\n * grant and revoke this role. Extra precautions should be taken to secure\n * accounts that have been granted it.\n */\nabstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {\n function __AccessControl_init() internal onlyInitializing {\n __Context_init_unchained();\n __ERC165_init_unchained();\n __AccessControl_init_unchained();\n }\n\n function __AccessControl_init_unchained() internal onlyInitializing {\n }\n struct RoleData {\n mapping(address => bool) members;\n bytes32 adminRole;\n }\n\n mapping(bytes32 => RoleData) private _roles;\n\n bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;\n\n /**\n * @dev Modifier that checks that an account has a specific role. Reverts\n * with a standardized message including the required role.\n *\n * The format of the revert reason is given by the following regular expression:\n *\n * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n *\n * _Available since v4.1._\n */\n modifier onlyRole(bytes32 role) {\n _checkRole(role, _msgSender());\n _;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev Returns `true` if `account` has been granted `role`.\n */\n function hasRole(bytes32 role, address account) public view override returns (bool) {\n return _roles[role].members[account];\n }\n\n /**\n * @dev Revert with a standard message if `account` is missing `role`.\n *\n * The format of the revert reason is given by the following regular expression:\n *\n * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n */\n function _checkRole(bytes32 role, address account) internal view {\n if (!hasRole(role, account)) {\n revert(\n string(\n abi.encodePacked(\n \"AccessControl: account \",\n StringsUpgradeable.toHexString(uint160(account), 20),\n \" is missing role \",\n StringsUpgradeable.toHexString(uint256(role), 32)\n )\n )\n );\n }\n }\n\n /**\n * @dev Returns the admin role that controls `role`. See {grantRole} and\n * {revokeRole}.\n *\n * To change a role's admin, use {_setRoleAdmin}.\n */\n function getRoleAdmin(bytes32 role) public view override returns (bytes32) {\n return _roles[role].adminRole;\n }\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n _grantRole(role, account);\n }\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * If `account` had been granted `role`, emits a {RoleRevoked} event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n _revokeRole(role, account);\n }\n\n /**\n * @dev Revokes `role` from the calling account.\n *\n * Roles are often managed via {grantRole} and {revokeRole}: this function's\n * purpose is to provide a mechanism for accounts to lose their privileges\n * if they are compromised (such as when a trusted device is misplaced).\n *\n * If the calling account had been revoked `role`, emits a {RoleRevoked}\n * event.\n *\n * Requirements:\n *\n * - the caller must be `account`.\n */\n function renounceRole(bytes32 role, address account) public virtual override {\n require(account == _msgSender(), \"AccessControl: can only renounce roles for self\");\n\n _revokeRole(role, account);\n }\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event. Note that unlike {grantRole}, this function doesn't perform any\n * checks on the calling account.\n *\n * [WARNING]\n * ====\n * This function should only be called from the constructor when setting\n * up the initial roles for the system.\n *\n * Using this function in any other way is effectively circumventing the admin\n * system imposed by {AccessControl}.\n * ====\n *\n * NOTE: This function is deprecated in favor of {_grantRole}.\n */\n function _setupRole(bytes32 role, address account) internal virtual {\n _grantRole(role, account);\n }\n\n /**\n * @dev Sets `adminRole` as ``role``'s admin role.\n *\n * Emits a {RoleAdminChanged} event.\n */\n function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {\n bytes32 previousAdminRole = getRoleAdmin(role);\n _roles[role].adminRole = adminRole;\n emit RoleAdminChanged(role, previousAdminRole, adminRole);\n }\n\n /**\n * @dev Grants `role` to `account`.\n *\n * Internal function without access restriction.\n */\n function _grantRole(bytes32 role, address account) internal virtual {\n if (!hasRole(role, account)) {\n _roles[role].members[account] = true;\n emit RoleGranted(role, account, _msgSender());\n }\n }\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * Internal function without access restriction.\n */\n function _revokeRole(bytes32 role, address account) internal virtual {\n if (hasRole(role, account)) {\n _roles[role].members[account] = false;\n emit RoleRevoked(role, account, _msgSender());\n }\n }\n uint256[49] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/interfaces/IERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../token/ERC20/IERC20Upgradeable.sol\";\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.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 \"../IERC20Upgradeable.sol\";\nimport \"../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable {\n using AddressUpgradeable for address;\n\n function safeTransfer(\n IERC20Upgradeable 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 IERC20Upgradeable 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 IERC20Upgradeable 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 IERC20Upgradeable 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 IERC20Upgradeable 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(IERC20Upgradeable 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"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20Upgradeable.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20MetadataUpgradeable is IERC20Upgradeable {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"contracts/interfaces/IGenericHandler.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.2;\n\n/// @title Interface for handler that handles generic deposits and deposit executions.\n/// @author Router Protocol.\ninterface IGenericHandler {\n function genericDeposit(\n uint8 _destChainID,\n bytes4 _selector,\n bytes calldata _data,\n uint256 _gasLimit,\n uint256 _gasPrice,\n address _feeToken\n ) external returns (uint64);\n\n function executeProposal(bytes calldata data) external;\n\n /// @notice Function to replay a transaction which was stuck due to underpricing of gas\n /// @param _destChainID Destination ChainID\n /// @param _depositNonce Nonce for the transaction.\n /// @param _gasLimit Gas limit allowed for the transaction.\n /// @param _gasPrice Gas Price for the transaction.\n function replayGenericDeposit(\n uint8 _destChainID,\n uint64 _depositNonce,\n uint256 _gasLimit,\n uint256 _gasPrice\n ) external;\n}\n"
},
"contracts/interfaces/iRouterCrossTalk.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface iRouterCrossTalk {\n\n event Linkevent( uint8 indexed ChainID , address indexed linkedContract );\n\n event Unlinkevent( uint8 indexed ChainID , address indexed linkedContract );\n\n event CrossTalkSend(uint8 indexed sourceChain , uint8 indexed destChain , address sourceAddress , address destinationAddress ,bytes4 indexed _interface, bytes _data , bytes32 _hash );\n\n event CrossTalkReceive(uint8 indexed sourceChain , uint8 indexed destChain , address sourceAddress , address destinationAddress ,bytes4 indexed _interface, bytes _data , bytes32 _hash );\n\n function routerSync(uint8 srcChainID , address srcAddress , bytes4 _interface , bytes calldata _data , bytes32 hash ) external returns ( bool , bytes memory );\n\n function Link(uint8 _chainID , address _linkedContract) external;\n\n function Unlink(uint8 _chainID ) external;\n\n function fetchLinkSetter( ) external view returns( address);\n\n function fetchLink( uint8 _chainID ) external view returns( address);\n\n function fetchBridge( ) external view returns ( address );\n\n function fetchHandler( ) external view returns ( address );\n\n}\n"
},
"contracts/interfaces/iGBridge.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.2;\n\ninterface iGBridge{\n\n function genericDeposit( uint8 _destChainID, bytes32 _resourceID ) external returns ( uint64 );\n\n function fetch_chainID( ) external view returns ( uint8 );\n\n}\n"
},
"contracts/interfaces/IFeeManagerGeneric.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.2;\n\ninterface iFeeManagerGeneric {\n\n function withdrawFee(address tokenAddress, address recipient, uint256 amount) external;\n\n function setFee(\n uint8 destinationChainID,\n address feeTokenAddress,\n uint256 feeFactor,\n uint256 bridgeFee,\n bool accepted\n ) external;\n\n function getFee(uint8 destinationChainID, address feeTokenAddress) external view returns (uint256 , uint256);\n}\n"
},
"@openzeppelin/contracts-upgradeable/access/IAccessControlUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev External interface of AccessControl declared to support ERC165 detection.\n */\ninterface IAccessControlUpgradeable {\n /**\n * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`\n *\n * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite\n * {RoleAdminChanged} not being emitted signaling this.\n *\n * _Available since v3.1._\n */\n event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);\n\n /**\n * @dev Emitted when `account` is granted `role`.\n *\n * `sender` is the account that originated the contract call, an admin role\n * bearer except when using {AccessControl-_setupRole}.\n */\n event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);\n\n /**\n * @dev Emitted when `account` is revoked `role`.\n *\n * `sender` is the account that originated the contract call:\n * - if using `revokeRole`, it is the admin role bearer\n * - if using `renounceRole`, it is the role bearer (i.e. `account`)\n */\n event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);\n\n /**\n * @dev Returns `true` if `account` has been granted `role`.\n */\n function hasRole(bytes32 role, address account) external view returns (bool);\n\n /**\n * @dev Returns the admin role that controls `role`. See {grantRole} and\n * {revokeRole}.\n *\n * To change a role's admin, use {AccessControl-_setRoleAdmin}.\n */\n function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function grantRole(bytes32 role, address account) external;\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * If `account` had been granted `role`, emits a {RoleRevoked} event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function revokeRole(bytes32 role, address account) external;\n\n /**\n * @dev Revokes `role` from the calling account.\n *\n * Roles are often managed via {grantRole} and {revokeRole}: this function's\n * purpose is to provide a mechanism for accounts to lose their privileges\n * if they are compromised (such as when a trusted device is misplaced).\n *\n * If the calling account had been granted `role`, emits a {RoleRevoked}\n * event.\n *\n * Requirements:\n *\n * - the caller must be `account`.\n */\n function renounceRole(bytes32 role, address account) external;\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract ContextUpgradeable is Initializable {\n function __Context_init() internal onlyInitializing {\n __Context_init_unchained();\n }\n\n function __Context_init_unchained() internal onlyInitializing {\n }\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n uint256[50] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary StringsUpgradeable {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165Upgradeable.sol\";\nimport \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {\n function __ERC165_init() internal onlyInitializing {\n __ERC165_init_unchained();\n }\n\n function __ERC165_init_unchained() internal onlyInitializing {\n }\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165Upgradeable).interfaceId;\n }\n uint256[50] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165Upgradeable {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (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 IERC20Upgradeable {\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 `recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address recipient, 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 `sender` to `recipient` 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 sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\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"
}
},
"settings": {
"evmVersion": "berlin",
"metadata": {
"bytecodeHash": "none",
"useLiteralContent": true
},
"optimizer": {
"enabled": true,
"runs": 50
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
} |