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Overview
ETH Balance
347.632902107614806185 ETH
Eth Value
$1,143,005.46 (@ $3,287.97/ETH)Token Holdings
Latest 25 from a total of 31,901 transactions
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All Batch | 21463628 | 1 min ago | IN | 0 ETH | 0.0005378 | ||||
All Batch | 21463560 | 15 mins ago | IN | 0 ETH | 0.00054579 | ||||
All Batch | 21463520 | 23 mins ago | IN | 0 ETH | 0.00041695 | ||||
All Batch | 21463505 | 26 mins ago | IN | 0 ETH | 0.00039384 | ||||
All Batch | 21463504 | 26 mins ago | IN | 0 ETH | 0.00041956 | ||||
Executex Swap An... | 21463387 | 49 mins ago | IN | 0 ETH | 0.00123202 | ||||
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All Batch | 21462980 | 2 hrs ago | IN | 0 ETH | 0.00039556 | ||||
All Batch | 21462906 | 2 hrs ago | IN | 0 ETH | 0.00055259 | ||||
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Latest 25 internal transactions (View All)
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21463505 | 26 mins ago | 1.06059011 ETH | ||||
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Contract Name:
Vault
Compiler Version
v0.8.20+commit.a1b79de6
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "SafeERC20.sol"; import "IVault.sol"; import "IKeyManager.sol"; import "ICFReceiver.sol"; import "Shared.sol"; import "Deposit.sol"; import "AggKeyNonceConsumer.sol"; import "GovernanceCommunityGuarded.sol"; /** * @title Vault contract * @notice The vault for holding and transferring native or ERC20 tokens and deploying contracts for * fetching individual deposits. It also allows users to do cross-chain swaps and(or) calls by * making a function call directly to this contract. */ contract Vault is IVault, AggKeyNonceConsumer, GovernanceCommunityGuarded { using SafeERC20 for IERC20; uint256 private constant _AGG_KEY_EMERGENCY_TIMEOUT = 3 days; uint256 private constant _GAS_TO_FORWARD = 8_000; uint256 private constant _FINALIZE_GAS_BUFFER = 30_000; constructor(IKeyManager keyManager) AggKeyNonceConsumer(keyManager) {} /// @dev Get the governor address from the KeyManager. This is called by the onlyGovernor /// modifier in the GovernanceCommunityGuarded. This logic can't be moved to the /// GovernanceCommunityGuarded since it requires a reference to the KeyManager. function _getGovernor() internal view override returns (address) { return getKeyManager().getGovernanceKey(); } /// @dev Get the community key from the KeyManager. This is called by the isCommunityKey /// modifier in the GovernanceCommunityGuarded. This logic can't be moved to the /// GovernanceCommunityGuarded since it requires a reference to the KeyManager. function _getCommunityKey() internal view override returns (address) { return getKeyManager().getCommunityKey(); } /// @dev Ensure that a new keyManager has the getGovernanceKey(), getCommunityKey() /// and getLastValidateTime() are implemented. These are functions required for /// this contract to at least be able to use the emergency mechanism. function _checkUpdateKeyManager(IKeyManager keyManager, bool omitChecks) internal view override { address newGovKey = keyManager.getGovernanceKey(); address newCommKey = keyManager.getCommunityKey(); uint256 lastValidateTime = keyManager.getLastValidateTime(); if (!omitChecks) { // Ensure that the keys are the same require(newGovKey == _getGovernor() && newCommKey == _getCommunityKey()); Key memory newAggKey = keyManager.getAggregateKey(); Key memory currentAggKey = getKeyManager().getAggregateKey(); require( newAggKey.pubKeyX == currentAggKey.pubKeyX && newAggKey.pubKeyYParity == currentAggKey.pubKeyYParity ); // Ensure that the last validate time is not in the future require(lastValidateTime <= block.timestamp); } else { // Check that the addresses have been initialized require(newGovKey != address(0) && newCommKey != address(0)); } } ////////////////////////////////////////////////////////////// // // // Transfer and Fetch // // // ////////////////////////////////////////////////////////////// /** * @notice Can do a combination of all fcns in this contract. It first fetches all * deposits , then it performs all transfers specified with the rest * of the inputs, the same as transferBatch (where all inputs are again required * to be of equal length - however the lengths of the fetch inputs do not have to * be equal to lengths of the transfer inputs). Fetches/transfers of native tokens are * indicated with 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE as the token address. * @dev FetchAndDeploy is executed first to handle the edge case , which probably shouldn't * happen anyway, where a deploy and a fetch for the same address are in the same batch. * Transfers are executed last to ensure that all fetching has been completed first. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param deployFetchParamsArray The array of deploy and fetch parameters * @param fetchParamsArray The array of fetch parameters * @param transferParamsArray The array of transfer parameters */ function allBatch( SigData calldata sigData, DeployFetchParams[] calldata deployFetchParamsArray, FetchParams[] calldata fetchParamsArray, TransferParams[] calldata transferParamsArray ) external override onlyNotSuspended consumesKeyNonce( sigData, keccak256(abi.encode(this.allBatch.selector, deployFetchParamsArray, fetchParamsArray, transferParamsArray)) ) { // Fetch by deploying new deposits _deployAndFetchBatch(deployFetchParamsArray); // Fetch from already deployed deposits _fetchBatch(fetchParamsArray); // Send all transfers _transferBatch(transferParamsArray); } /** * @notice Same functionality as allBatch but removing the contract deployments * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param fetchParamsArray The array of fetch parameters * @param transferParamsArray The array of transfer parameters */ function allBatchV2( SigData calldata sigData, FetchParams[] calldata fetchParamsArray, TransferParams[] calldata transferParamsArray ) external override onlyNotSuspended consumesKeyNonce( sigData, keccak256(abi.encode(this.allBatchV2.selector, fetchParamsArray, transferParamsArray)) ) { // Fetch from already deployed deposits _fetchBatch(fetchParamsArray); // Send all transfers _transferBatch(transferParamsArray); } ////////////////////////////////////////////////////////////// // // // Transfers // // // ////////////////////////////////////////////////////////////// /** * @notice Transfers native tokens or a ERC20 token from this vault to a recipient * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param transferParams The transfer parameters */ function transfer( SigData calldata sigData, TransferParams calldata transferParams ) external override onlyNotSuspended nzAddr(transferParams.token) nzAddr(transferParams.recipient) nzUint(transferParams.amount) consumesKeyNonce(sigData, keccak256(abi.encode(this.transfer.selector, transferParams))) { _transfer(transferParams.token, transferParams.recipient, transferParams.amount); } /** * @notice Fallback transfer tokens from this vault to a recipient with all the gas. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param transferParams The transfer parameters */ function transferFallback( SigData calldata sigData, TransferParams calldata transferParams ) external onlyNotSuspended nzAddr(transferParams.token) nzAddr(transferParams.recipient) nzUint(transferParams.amount) consumesKeyNonce(sigData, keccak256(abi.encode(this.transferFallback.selector, transferParams))) { if (transferParams.token == _NATIVE_ADDR) { (bool success, ) = transferParams.recipient.call{value: transferParams.amount}(""); require(success, "Vault: transfer fallback failed"); } else { IERC20(transferParams.token).safeTransfer(transferParams.recipient, transferParams.amount); } } /** * @notice Transfers native tokens or ERC20 tokens from this vault to recipients. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param transferParamsArray The array of transfer parameters. */ function transferBatch( SigData calldata sigData, TransferParams[] calldata transferParamsArray ) external override onlyNotSuspended consumesKeyNonce(sigData, keccak256(abi.encode(this.transferBatch.selector, transferParamsArray))) { _transferBatch(transferParamsArray); } /** * @notice Transfers native tokens or ERC20 tokens from this vault to recipients. * @param transferParamsArray The array of transfer parameters. */ function _transferBatch(TransferParams[] calldata transferParamsArray) private { uint256 length = transferParamsArray.length; for (uint256 i = 0; i < length; ) { _transfer(transferParamsArray[i].token, transferParamsArray[i].recipient, transferParamsArray[i].amount); unchecked { ++i; } } } /** * @notice Transfers ETH or a token from this vault to a recipient * @dev When transfering native tokens, using call function limiting the amount of gas so * the receivers can't consume all the gas. Setting that amount of gas to more than * 2300 to future-proof the contract in case of opcode gas costs changing. * @dev When transferring ERC20 tokens, if it fails ensure the transfer fails gracefully * to not revert an entire batch. e.g. usdc blacklisted recipient. Following safeTransfer * approach to support tokens that don't return a bool. * @param token The address of the token to be transferred * @param recipient The address of the recipient of the transfer * @param amount The amount to transfer, in wei (uint) */ function _transfer(address token, address payable recipient, uint256 amount) private { if (address(token) == _NATIVE_ADDR) { // solhint-disable-next-line avoid-low-level-calls (bool success, ) = recipient.call{gas: _GAS_TO_FORWARD, value: amount}(""); if (!success) { emit TransferNativeFailed(recipient, amount); } } else { // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = token.call( abi.encodeWithSelector(IERC20(token).transfer.selector, recipient, amount) ); // No need to check token.code.length since it comes from a gated call bool transferred = success && (returndata.length == uint256(0) || abi.decode(returndata, (bool))); if (!transferred) emit TransferTokenFailed(recipient, amount, token, returndata); } } ////////////////////////////////////////////////////////////// // // // Fetch Deposits // // // ////////////////////////////////////////////////////////////// /** * @notice Retrieves any token from multiple address, deterministically generated using * create2, by creating a contract for that address, sending it to this vault. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param deployFetchParamsArray The array of deploy and fetch parameters */ function deployAndFetchBatch( SigData calldata sigData, DeployFetchParams[] calldata deployFetchParamsArray ) external override onlyNotSuspended consumesKeyNonce(sigData, keccak256(abi.encode(this.deployAndFetchBatch.selector, deployFetchParamsArray))) { _deployAndFetchBatch(deployFetchParamsArray); } function _deployAndFetchBatch(DeployFetchParams[] calldata deployFetchParamsArray) private { // Deploy deposit contracts uint256 length = deployFetchParamsArray.length; for (uint256 i = 0; i < length; ) { new Deposit{salt: deployFetchParamsArray[i].swapID}(deployFetchParamsArray[i].token); unchecked { ++i; } } } /** * @notice Retrieves any token addresses where a Deposit contract is already deployed. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param fetchParamsArray The array of fetch parameters */ function fetchBatch( SigData calldata sigData, FetchParams[] calldata fetchParamsArray ) external override onlyNotSuspended consumesKeyNonce(sigData, keccak256(abi.encode(this.fetchBatch.selector, fetchParamsArray))) { _fetchBatch(fetchParamsArray); } /** * @notice Retrieves any token from multiple addresses where a Deposit contract is already deployed. * It emits an event if the fetch fails. * @param fetchParamsArray The array of fetch parameters */ function _fetchBatch(FetchParams[] calldata fetchParamsArray) private { uint256 length = fetchParamsArray.length; for (uint256 i = 0; i < length; ) { Deposit(fetchParamsArray[i].fetchContract).fetch(fetchParamsArray[i].token); unchecked { ++i; } } } ////////////////////////////////////////////////////////////// // // // Initiate cross-chain swaps (source chain) // // // ////////////////////////////////////////////////////////////// /** * @notice Swaps native token for a token in another chain. The egress token will be transferred to the specified * destination address on the destination chain. * @dev Checking the validity of inputs shall be done as part of the event witnessing. Only the amount is checked * to explicity indicate that an amount is required. It isn't preventing spamming. * @param dstChain The destination chain according to the Chainflip Protocol's nomenclature. * @param dstAddress Bytes containing the destination address on the destination chain. * @param dstToken Destination token to be swapped to. * @param cfParameters Additional parameters to be passed to the Chainflip protocol. */ function xSwapNative( uint32 dstChain, bytes memory dstAddress, uint32 dstToken, bytes calldata cfParameters ) external payable override onlyNotSuspended nzUint(msg.value) { emit SwapNative(dstChain, dstAddress, dstToken, msg.value, msg.sender, cfParameters); } /** * @notice Swaps ERC20 token for a token in another chain. The desired token will be transferred to the specified * destination address on the destination chain. The provided ERC20 token must be supported by the Chainflip Protocol. * @dev Checking the validity of inputs shall be done as part of the event witnessing. Only the amount is checked * to explicity indicate that an amount is required. * @param dstChain The destination chain according to the Chainflip Protocol's nomenclature. * @param dstAddress Bytes containing the destination address on the destination chain. * @param dstToken Uint containing the specifics of the swap to be performed according to Chainflip's nomenclature. * @param srcToken Address of the source token to swap. * @param amount Amount of tokens to swap. * @param cfParameters Additional parameters to be passed to the Chainflip protocol. */ function xSwapToken( uint32 dstChain, bytes memory dstAddress, uint32 dstToken, IERC20 srcToken, uint256 amount, bytes calldata cfParameters ) external override onlyNotSuspended nzUint(amount) { srcToken.safeTransferFrom(msg.sender, address(this), amount); emit SwapToken(dstChain, dstAddress, dstToken, address(srcToken), amount, msg.sender, cfParameters); } ////////////////////////////////////////////////////////////// // // // Initiate cross-chain call and swap (source chain) // // // ////////////////////////////////////////////////////////////// /** * @notice Performs a cross-chain call to the destination address on the destination chain. Native tokens must be paid * to this contract. The swap intent determines if the provided tokens should be swapped to a different token * and transferred as part of the cross-chain call. Otherwise, all tokens are used as a payment for gas on the destination chain. * The message parameter is transmitted to the destination chain as part of the cross-chain call. * @dev Checking the validity of inputs shall be done as part of the event witnessing. Only the amount is checked * to explicity inidcate that an amount is required. It isn't preventing spamming. * @param dstChain The destination chain according to the Chainflip Protocol's nomenclature. * @param dstAddress Bytes containing the destination address on the destination chain. * @param dstToken Uint containing the specifics of the swap to be performed, if any, as part of the xCall. The string * must follow Chainflip's nomenclature. It can signal that no swap needs to take place * and the source token will be used for gas in a swapless xCall. * @param message General purpose message to be sent to the egress chain. Notice that the Chainflip protocol has a limit size * for the message. Ensure that the message length is smaller that the limit before starting a swap. * @param gasAmount The amount to be used for gas in the egress chain. * @param cfParameters Additional parameters to be passed to the Chainflip protocol. */ function xCallNative( uint32 dstChain, bytes calldata dstAddress, uint32 dstToken, bytes calldata message, uint256 gasAmount, bytes calldata cfParameters ) external payable override onlyNotSuspended nzUint(msg.value) { emit XCallNative(dstChain, dstAddress, dstToken, msg.value, msg.sender, message, gasAmount, cfParameters); } /** * @notice Performs a cross-chain call to the destination chain and destination address. An ERC20 token amount * needs to be approved to this contract. The ERC20 token must be supported by the Chainflip Protocol. * The swap intent determines whether the provided tokens should be swapped to a different token * by the Chainflip Protocol. If so, the swapped tokens will be transferred to the destination chain as part * of the cross-chain call. Otherwise, the tokens are used as a payment for gas on the destination chain. * The message parameter is transmitted to the destination chain as part of the cross-chain call. * @dev Checking the validity of inputs shall be done as part of the event witnessing. Only the amount is checked * to explicity indicate that an amount is required. * @param dstChain The destination chain according to the Chainflip Protocol's nomenclature. * @param dstAddress Bytes containing the destination address on the destination chain. * @param dstToken Uint containing the specifics of the swap to be performed, if any, as part of the xCall. The string * must follow Chainflip's nomenclature. It can signal that no swap needs to take place * and the source token will be used for gas in a swapless xCall. * @param message General purpose message to be sent to the egress chain. Notice that the Chainflip protocol has a limit size * for the message. Ensure that the message length is smaller that the limit before starting a swap. * @param gasAmount The amount to be used for gas in the egress chain. * @param srcToken Address of the source token. * @param amount Amount of tokens to swap. * @param cfParameters Additional parameters to be passed to the Chainflip protocol. */ function xCallToken( uint32 dstChain, bytes memory dstAddress, uint32 dstToken, bytes calldata message, uint256 gasAmount, IERC20 srcToken, uint256 amount, bytes calldata cfParameters ) external override onlyNotSuspended nzUint(amount) { srcToken.safeTransferFrom(msg.sender, address(this), amount); emit XCallToken( dstChain, dstAddress, dstToken, address(srcToken), amount, msg.sender, message, gasAmount, cfParameters ); } ////////////////////////////////////////////////////////////// // // // Gas topups // // // ////////////////////////////////////////////////////////////// /** * @notice Add gas (topup) to an existing cross-chain call with the unique identifier swapID. * Native tokens must be paid to this contract as part of the call. * @param swapID The unique identifier for this swap (bytes32) */ function addGasNative(bytes32 swapID) external payable override onlyNotSuspended nzUint(msg.value) { emit AddGasNative(swapID, msg.value); } /** * @notice Add gas (topup) to an existing cross-chain call with the unique identifier swapID. * A Chainflip supported token must be paid to this contract as part of the call. * @param swapID The unique identifier for this swap (bytes32) * @param token Address of the token to provide. * @param amount Amount of tokens to provide. */ function addGasToken( bytes32 swapID, uint256 amount, IERC20 token ) external override onlyNotSuspended nzUint(amount) { token.safeTransferFrom(msg.sender, address(this), amount); emit AddGasToken(swapID, amount, address(token)); } ////////////////////////////////////////////////////////////// // // // Execute cross-chain call and swap (dest. chain) // // // ////////////////////////////////////////////////////////////// /** * @notice Transfers native tokens or an ERC20 token from this vault to a recipient and makes a function * call completing a cross-chain swap and call. The ICFReceiver interface is expected on * the receiver's address. A message is passed to the receiver along with other * parameters specifying the origin of the swap. * @dev Not checking nzUint(amount) to prevent reversions in edge cases (e.g. all input amount used for gas). * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param transferParams The transfer parameters * @param srcChain The source chain where the call originated from. * @param srcAddress The address where the transfer originated within the ingress chain. * @param message The message to be passed to the recipient. */ function executexSwapAndCall( SigData calldata sigData, TransferParams calldata transferParams, uint32 srcChain, bytes calldata srcAddress, bytes calldata message ) external override onlyNotSuspended nzAddr(transferParams.token) nzAddr(transferParams.recipient) consumesKeyNonce( sigData, keccak256(abi.encode(this.executexSwapAndCall.selector, transferParams, srcChain, srcAddress, message)) ) { // Logic in another internal function to avoid the stackTooDeep error _executexSwapAndCall(transferParams, srcChain, srcAddress, message); } /** * @notice Logic for transferring the tokens and calling the recipient. It's on the receiver to * make sure the call doesn't revert, otherwise the tokens won't be transferred. * The _transfer function is not used because we want to be able to embed the native token * into the cfReceive call to avoid doing two external calls. * In case of revertion the tokens will remain in the Vault. Therefore, the destination * contract must ensure it doesn't revert e.g. using try-catch mechanisms. * @dev In the case of the ERC20 transfer reverting, not handling the error to allow for tx replay. * Also, to ensure the cfReceive call is made only if the transfer is successful. */ function _executexSwapAndCall( TransferParams calldata transferParams, uint32 srcChain, bytes calldata srcAddress, bytes calldata message ) private { uint256 nativeAmount; if (transferParams.amount > 0) { if (transferParams.token == _NATIVE_ADDR) { nativeAmount = transferParams.amount; } else { IERC20(transferParams.token).safeTransfer(transferParams.recipient, transferParams.amount); } } ICFReceiver(transferParams.recipient).cfReceive{value: nativeAmount}( srcChain, srcAddress, message, transferParams.token, transferParams.amount ); } ////////////////////////////////////////////////////////////// // // // Execute cross-chain call (dest. chain) // // // ////////////////////////////////////////////////////////////// /** * @notice Executes a cross-chain function call. The ICFReceiver interface is expected on * the receiver's address. A message is passed to the receiver along with other * parameters specifying the origin of the swap. This is used for cross-chain messaging * without any swap taking place on the Chainflip Protocol. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param srcChain The source chain where the call originated from. * @param srcAddress The address where the transfer originated from in the ingressParams. * @param message The message to be passed to the recipient. */ function executexCall( SigData calldata sigData, address recipient, uint32 srcChain, bytes calldata srcAddress, bytes calldata message ) external override onlyNotSuspended nzAddr(recipient) consumesKeyNonce( sigData, keccak256(abi.encode(this.executexCall.selector, recipient, srcChain, srcAddress, message)) ) { ICFReceiver(recipient).cfReceivexCall(srcChain, srcAddress, message); } ////////////////////////////////////////////////////////////// // // // Auxiliary chain actions // // // ////////////////////////////////////////////////////////////// /** * @notice Transfer funds and pass calldata to be executed on a Multicall contract. * @dev For safety purposes it's preferred to execute calldata externally with * a limited amount of funds instead of executing arbitrary calldata here. * @dev Calls are not reverted upon Multicall.run() failure so the nonce gets consumed. The * gasMulticall parameters is needed to prevent an insufficient gas griefing attack. * The _GAS_BUFFER is a conservative estimation of the gas required to finalize the call. * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param transferParams The transfer parameters inluding the token and amount to be transferred * and the multicall contract address. * @param calls Array of actions to be executed. * @param gasMulticall Gas that must be forwarded to the multicall. */ function executeActions( SigData calldata sigData, TransferParams calldata transferParams, IMulticall.Call[] calldata calls, uint256 gasMulticall ) external override onlyNotSuspended consumesKeyNonce( sigData, keccak256(abi.encode(this.executeActions.selector, transferParams, calls, gasMulticall)) ) { // Fund and run multicall uint256 valueToSend; if (transferParams.amount > 0) { if (transferParams.token == _NATIVE_ADDR) { valueToSend = transferParams.amount; } else { IERC20(transferParams.token).approve(transferParams.recipient, transferParams.amount); } } // Ensure that the amount of gas supplied to the call to the Multicall contract is at least the gas // limit specified. We can do this by enforcing that we still have gasMulticall + gas buffer available. // The gas buffer is to ensure there is enough gas to finalize the call, including a safety margin. // The 63/64 rule specified in EIP-150 needs to be taken into account. require(gasleft() >= ((gasMulticall + _FINALIZE_GAS_BUFFER) * 64) / 63, "Vault: insufficient gas"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory reason) = transferParams.recipient.call{ gas: gasleft() - _FINALIZE_GAS_BUFFER, value: valueToSend }(abi.encodeWithSelector(IMulticall.run.selector, calls, transferParams.token, transferParams.amount)); if (!success) { if (transferParams.amount > 0 && transferParams.token != _NATIVE_ADDR) { IERC20(transferParams.token).approve(transferParams.recipient, 0); } emit ExecuteActionsFailed(transferParams.recipient, transferParams.amount, transferParams.token, reason); } else { require(transferParams.recipient.code.length > 0); } } ////////////////////////////////////////////////////////////// // // // Governance // // // ////////////////////////////////////////////////////////////// /** * @notice Withdraw all funds to governance address in case of emergency. This withdrawal needs * to be approved by the Community and it can only be executed if no nonce from the * current AggKey had been consumed in _AGG_KEY_TIMEOUT time. It is a last resort and * can be used to rectify an emergency. * @param tokens The addresses of the tokens to be transferred */ function govWithdraw( address[] calldata tokens ) external override onlyGovernor onlyCommunityGuardDisabled onlySuspended timeoutEmergency { // Could use msg.sender or getGovernor() but hardcoding the get call just for extra safety address payable recipient = payable(getKeyManager().getGovernanceKey()); // Transfer all native tokens and ERC20 Tokens for (uint256 i = 0; i < tokens.length; i++) { if (tokens[i] == _NATIVE_ADDR) { _transfer(_NATIVE_ADDR, recipient, address(this).balance); } else { _transfer(tokens[i], recipient, IERC20(tokens[i]).balanceOf(address(this))); } } } ////////////////////////////////////////////////////////////// // // // Modifiers // // // ////////////////////////////////////////////////////////////// /// @dev Check that no nonce has been consumed in the last 3 days - emergency modifier timeoutEmergency() { require( block.timestamp - getKeyManager().getLastValidateTime() >= _AGG_KEY_EMERGENCY_TIMEOUT, "Vault: not enough time" ); _; } ////////////////////////////////////////////////////////////// // // // Fallbacks // // // ////////////////////////////////////////////////////////////// /// @dev For receiving native tokens from the Deposit contracts receive() external payable { emit FetchedNative(msg.sender, msg.value); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "IERC20.sol"; import "draft-IERC20Permit.sol"; import "Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IAggKeyNonceConsumer.sol"; import "IGovernanceCommunityGuarded.sol"; import "IMulticall.sol"; /** * @title Vault interface * @notice The interface for functions Vault implements */ interface IVault is IGovernanceCommunityGuarded, IAggKeyNonceConsumer { event FetchedNative(address indexed sender, uint256 amount); event TransferNativeFailed(address payable indexed recipient, uint256 amount); event TransferTokenFailed(address payable indexed recipient, uint256 amount, address indexed token, bytes reason); event SwapNative( uint32 dstChain, bytes dstAddress, uint32 dstToken, uint256 amount, address indexed sender, bytes cfParameters ); event SwapToken( uint32 dstChain, bytes dstAddress, uint32 dstToken, address srcToken, uint256 amount, address indexed sender, bytes cfParameters ); /// @dev bytes parameters is not indexed because indexing a dynamic type for it to be filtered /// makes it so we won't be able to decode it unless we specifically search for it. If we want /// to filter it and decode it then we would need to have both the indexed and the non-indexed /// version in the event. That is unnecessary. event XCallNative( uint32 dstChain, bytes dstAddress, uint32 dstToken, uint256 amount, address indexed sender, bytes message, uint256 gasAmount, bytes cfParameters ); event XCallToken( uint32 dstChain, bytes dstAddress, uint32 dstToken, address srcToken, uint256 amount, address indexed sender, bytes message, uint256 gasAmount, bytes cfParameters ); event AddGasNative(bytes32 swapID, uint256 amount); event AddGasToken(bytes32 swapID, uint256 amount, address token); event ExecuteActionsFailed( address payable indexed multicallAddress, uint256 amount, address indexed token, bytes reason ); function allBatch( SigData calldata sigData, DeployFetchParams[] calldata deployFetchParamsArray, FetchParams[] calldata fetchParamsArray, TransferParams[] calldata transferParamsArray ) external; function allBatchV2( SigData calldata sigData, FetchParams[] calldata fetchParamsArray, TransferParams[] calldata transferParamsArray ) external; ////////////////////////////////////////////////////////////// // // // Transfers // // // ////////////////////////////////////////////////////////////// function transfer(SigData calldata sigData, TransferParams calldata transferParams) external; function transferBatch(SigData calldata sigData, TransferParams[] calldata transferParamsArray) external; ////////////////////////////////////////////////////////////// // // // Fetch Deposits // // // ////////////////////////////////////////////////////////////// function deployAndFetchBatch( SigData calldata sigData, DeployFetchParams[] calldata deployFetchParamsArray ) external; function fetchBatch(SigData calldata sigData, FetchParams[] calldata fetchParamsArray) external; ////////////////////////////////////////////////////////////// // // // Initiate cross-chain swaps (source chain) // // // ////////////////////////////////////////////////////////////// function xSwapToken( uint32 dstChain, bytes calldata dstAddress, uint32 dstToken, IERC20 srcToken, uint256 amount, bytes calldata cfParameters ) external; function xSwapNative( uint32 dstChain, bytes calldata dstAddress, uint32 dstToken, bytes calldata cfParameters ) external payable; ////////////////////////////////////////////////////////////// // // // Initiate cross-chain call and swap (source chain) // // // ////////////////////////////////////////////////////////////// function xCallNative( uint32 dstChain, bytes calldata dstAddress, uint32 dstToken, bytes calldata message, uint256 gasAmount, bytes calldata cfParameters ) external payable; function xCallToken( uint32 dstChain, bytes calldata dstAddress, uint32 dstToken, bytes calldata message, uint256 gasAmount, IERC20 srcToken, uint256 amount, bytes calldata cfParameters ) external; ////////////////////////////////////////////////////////////// // // // Gas topups // // // ////////////////////////////////////////////////////////////// function addGasNative(bytes32 swapID) external payable; function addGasToken(bytes32 swapID, uint256 amount, IERC20 token) external; ////////////////////////////////////////////////////////////// // // // Execute cross-chain call and swap (dest. chain) // // // ////////////////////////////////////////////////////////////// function executexSwapAndCall( SigData calldata sigData, TransferParams calldata transferParams, uint32 srcChain, bytes calldata srcAddress, bytes calldata message ) external; ////////////////////////////////////////////////////////////// // // // Execute cross-chain call (dest. chain) // // // ////////////////////////////////////////////////////////////// function executexCall( SigData calldata sigData, address recipient, uint32 srcChain, bytes calldata srcAddress, bytes calldata message ) external; ////////////////////////////////////////////////////////////// // // // Auxiliary chain actions // // // ////////////////////////////////////////////////////////////// function executeActions( SigData calldata sigData, TransferParams calldata transferParams, IMulticall.Call[] calldata calls, uint256 gasMulticall ) external; ////////////////////////////////////////////////////////////// // // // Governance // // // ////////////////////////////////////////////////////////////// function govWithdraw(address[] calldata tokens) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IShared.sol"; import "IKeyManager.sol"; /** * @title AggKeyNonceConsumer interface */ interface IAggKeyNonceConsumer is IShared { event UpdatedKeyManager(address keyManager); ////////////////////////////////////////////////////////////// // // // State-changing functions // // // ////////////////////////////////////////////////////////////// /** * @notice Update KeyManager reference. Used if KeyManager contract is updated * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param keyManager New KeyManager's address * @param omitChecks Allow the omission of the extra checks in a special case */ function updateKeyManager(SigData calldata sigData, IKeyManager keyManager, bool omitChecks) external; ////////////////////////////////////////////////////////////// // // // Getters // // // ////////////////////////////////////////////////////////////// /** * @notice Get the KeyManager address/interface that's used to validate sigs * @return The KeyManager (IKeyManager) */ function getKeyManager() external view returns (IKeyManager); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IERC20.sol"; /** * @title Shared interface * @notice Holds structs needed by other interfaces */ interface IShared { /** * @dev SchnorrSECP256K1 requires that each key has a public key part (x coordinate), * a parity for the y coordinate (0 if the y ordinate of the public key is even, 1 * if it's odd) */ struct Key { uint256 pubKeyX; uint8 pubKeyYParity; } /** * @dev Contains a signature and the nonce used to create it. Also the recovered address * to check that the signature is valid */ struct SigData { uint256 sig; uint256 nonce; address kTimesGAddress; } /** * @param token The address of the token to be transferred * @param recipient The address of the recipient of the transfer * @param amount The amount to transfer, in wei (uint) */ struct TransferParams { address token; address payable recipient; uint256 amount; } /** * @param swapID The unique identifier for this swap (bytes32), used for create2 * @param token The token to be transferred */ struct DeployFetchParams { bytes32 swapID; address token; } /** * @param fetchContract The address of the deployed Deposit contract * @param token The token to be transferred */ struct FetchParams { address payable fetchContract; address token; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IShared.sol"; /** * @title KeyManager interface * @notice The interface for functions KeyManager implements */ interface IKeyManager is IShared { event AggKeySetByAggKey(Key oldAggKey, Key newAggKey); event AggKeySetByGovKey(Key oldAggKey, Key newAggKey); event GovKeySetByAggKey(address oldGovKey, address newGovKey); event GovKeySetByGovKey(address oldGovKey, address newGovKey); event CommKeySetByAggKey(address oldCommKey, address newCommKey); event CommKeySetByCommKey(address oldCommKey, address newCommKey); event SignatureAccepted(SigData sigData, address signer); event GovernanceAction(bytes32 message); ////////////////////////////////////////////////////////////// // // // State-changing functions // // // ////////////////////////////////////////////////////////////// function consumeKeyNonce(SigData memory sigData, bytes32 contractMsgHash) external; function setAggKeyWithAggKey(SigData memory sigData, Key memory newAggKey) external; function setAggKeyWithGovKey(Key memory newAggKey) external; function setGovKeyWithAggKey(SigData calldata sigData, address newGovKey) external; function setGovKeyWithGovKey(address newGovKey) external; function setCommKeyWithAggKey(SigData calldata sigData, address newCommKey) external; function setCommKeyWithCommKey(address newCommKey) external; function govAction(bytes32 message) external; ////////////////////////////////////////////////////////////// // // // Non-state-changing functions // // // ////////////////////////////////////////////////////////////// function getAggregateKey() external view returns (Key memory); function getGovernanceKey() external view returns (address); function getCommunityKey() external view returns (address); function isNonceUsedByAggKey(uint256 nonce) external view returns (bool); function getLastValidateTime() external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IShared.sol"; /** * @title GovernanceCommunityGuarded interface */ interface IGovernanceCommunityGuarded is IShared { event CommunityGuardDisabled(bool communityGuardDisabled); event Suspended(bool suspended); ////////////////////////////////////////////////////////////// // // // State-changing functions // // // ////////////////////////////////////////////////////////////// /** * @notice Enable Community Guard */ function enableCommunityGuard() external; /** * @notice Disable Community Guard */ function disableCommunityGuard() external; /** * @notice Can be used to suspend contract execution - only executable by * governance and only to be used in case of emergency. */ function suspend() external; /** * @notice Resume contract execution */ function resume() external; ////////////////////////////////////////////////////////////// // // // Getters // // // ////////////////////////////////////////////////////////////// /** * @notice Get the Community Key * @return The CommunityKey */ function getCommunityKey() external view returns (address); /** * @notice Get the Community Guard state * @return The Community Guard state */ function getCommunityGuardDisabled() external view returns (bool); /** * @notice Get suspended state * @return The suspended state */ function getSuspendedState() external view returns (bool); /** * @notice Get governor address * @return The governor address */ function getGovernor() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IMulticall { enum CallType { Default, FullTokenBalance, FullNativeBalance, CollectTokenBalance } struct Call { CallType callType; address target; uint256 value; bytes callData; bytes payload; } error AlreadyRunning(); error CallFailed(uint256 callPosition, bytes reason); function run(Call[] calldata calls, address tokenIn, uint256 amountIn) external payable; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title CF Receiver interface * @dev The ICFReceiver interface is the interface required to receive tokens and * cross-chain calls from the Chainflip Protocol. */ interface ICFReceiver { /** * @notice Receiver of a cross-chain swap and call made by the Chainflip Protocol. * @param srcChain The source chain according to the Chainflip Protocol's nomenclature. * @param srcAddress Bytes containing the source address on the source chain. * @param message The message sent on the source chain. This is a general purpose message. * @param token Address of the token received. _NATIVE_ADDR if it's native tokens. * @param amount Amount of tokens received. This will match msg.value for native tokens. */ function cfReceive( uint32 srcChain, bytes calldata srcAddress, bytes calldata message, address token, uint256 amount ) external payable; /** * @notice Receiver of a cross-chain call made by the Chainflip Protocol. * @param srcChain The source chain according to the Chainflip Protocol's nomenclature. * @param srcAddress Bytes containing the source address on the source chain. * @param message The message sent on the source chain. This is a general purpose message. */ function cfReceivexCall(uint32 srcChain, bytes calldata srcAddress, bytes calldata message) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IShared.sol"; /** * @title Shared contract * @notice Holds constants and modifiers that are used in multiple contracts * @dev It would be nice if this could be a library, but modifiers can't be exported :( */ abstract contract Shared is IShared { /// @dev The address used to indicate whether transfer should send native or a token address internal constant _NATIVE_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; address internal constant _ZERO_ADDR = address(0); bytes32 internal constant _NULL = ""; uint256 internal constant _E_18 = 1e18; /// @dev Checks that a uint isn't zero/empty modifier nzUint(uint256 u) { require(u != 0, "Shared: uint input is empty"); _; } /// @dev Checks that an address isn't zero/empty modifier nzAddr(address a) { require(a != _ZERO_ADDR, "Shared: address input is empty"); _; } /// @dev Checks that a bytes32 isn't zero/empty modifier nzBytes32(bytes32 b) { require(b != _NULL, "Shared: bytes32 input is empty"); _; } /// @dev Checks that the pubKeyX is populated modifier nzKey(Key memory key) { require(key.pubKeyX != 0, "Shared: pubKeyX is empty"); _; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IERC20Lite.sol"; /** * @title Deposit contract * @notice Creates a contract with a known address and withdraws tokens from it. * After deployment, the Vault will call fetch() to withdraw tokens. * @dev Any change in this contract, including comments, will affect the final * bytecode and therefore will affect the create2 derived addresses. * Do NOT modify unless the consequences of doing so are fully understood. */ contract Deposit { address payable private immutable vault; /** * @notice Upon deployment it fetches the tokens (native or ERC20) to the Vault. * @param token The address of the token to fetch */ constructor(address token) { vault = payable(msg.sender); // Slightly cheaper to use msg.sender instead of Vault. if (token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) { // solhint-disable-next-line avoid-low-level-calls (bool success, ) = msg.sender.call{value: address(this).balance}(""); require(success); } else { // IERC20Lite.transfer doesn't have a return bool to avoid reverts on non-standard ERC20s IERC20Lite(token).transfer(msg.sender, IERC20Lite(token).balanceOf(address(this))); } } /** * @notice Allows the Vault to fetch ERC20 tokens from this contract. * @param token The address of the token to fetch */ function fetch(address token) external { require(msg.sender == vault); // IERC20Lite.transfer doesn't have a return bool to avoid reverts on non-standard ERC20s IERC20Lite(token).transfer(msg.sender, IERC20Lite(token).balanceOf(address(this))); } /// @notice Receives native tokens, emits an event and sends them to the Vault. Note that this // requires the sender to forward some more gas than for a simple transfer. receive() external payable { // solhint-disable-next-line avoid-low-level-calls (bool success, ) = vault.call{value: address(this).balance}(""); require(success); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC20 Lite Interface * @notice The interface for functions ERC20Lite implements. This is intended to * be used only in the Deposit contract. * @dev Any change in this contract, including comments, will affect the final * bytecode and therefore will affect the create2 derived addresses. * Do NOT modify unless the consequences of doing so are fully understood. */ interface IERC20Lite { /// @dev Removed the return bool to avoid reverts on non-standard ERC20s. function transfer(address, uint256) external; function balanceOf(address) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IKeyManager.sol"; import "IAggKeyNonceConsumer.sol"; import "Shared.sol"; /** * @title AggKeyNonceConsumer contract * @notice Manages the reference to the KeyManager contract. The address * is set in the constructor and can only be updated with a valid * signature validated by the current KeyManager contract. This shall * be done if the KeyManager contract is updated. */ abstract contract AggKeyNonceConsumer is Shared, IAggKeyNonceConsumer { /// @dev The KeyManager used to checks sigs used in functions here IKeyManager private _keyManager; constructor(IKeyManager keyManager) nzAddr(address(keyManager)) { _keyManager = keyManager; } ////////////////////////////////////////////////////////////// // // // State-changing functions // // // ////////////////////////////////////////////////////////////// /** * @notice Update KeyManager reference. Used if KeyManager contract is updated * @param sigData Struct containing the signature data over the message * to verify, signed by the aggregate key. * @param keyManager New KeyManager's address * @param omitChecks Allow the omission of the extra checks in a special case */ function updateKeyManager( SigData calldata sigData, IKeyManager keyManager, bool omitChecks ) external override nzAddr(address(keyManager)) consumesKeyNonce(sigData, keccak256(abi.encode(this.updateKeyManager.selector, keyManager, omitChecks))) { // Check that the new KeyManager is a contract require(address(keyManager).code.length > 0); // Allow the child to check compatibility with the new KeyManager _checkUpdateKeyManager(keyManager, omitChecks); _keyManager = keyManager; emit UpdatedKeyManager(address(keyManager)); } /// @dev This will be called when upgrading to a new KeyManager. This allows the child's contract /// to check its compatibility with the new KeyManager. This is to prevent the contract from // getting bricked. There is no good way to enforce the implementation of consumeKeyNonce(). function _checkUpdateKeyManager(IKeyManager keyManager, bool omitChecks) internal view virtual; ////////////////////////////////////////////////////////////// // // // Getters // // // ////////////////////////////////////////////////////////////// /** * @notice Get the KeyManager address/interface that's used to validate sigs * @return The KeyManager (IKeyManager) */ function getKeyManager() public view override returns (IKeyManager) { return _keyManager; } ////////////////////////////////////////////////////////////// // // // Modifiers // // // ////////////////////////////////////////////////////////////// /// @dev Calls consumeKeyNonce in _keyManager modifier consumesKeyNonce(SigData calldata sigData, bytes32 contractMsgHash) { getKeyManager().consumeKeyNonce(sigData, contractMsgHash); _; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "IGovernanceCommunityGuarded.sol"; import "AggKeyNonceConsumer.sol"; import "Shared.sol"; /** * @title GovernanceCommunityGuarded contract * @notice Allows the governor to perform certain actions for the procotol's safety in * case of emergency. The aim is to allow the governor to suspend execution of * critical functions. * Also, it allows the CommunityKey to safeguard certain functions so the * governor can execute them iff the communityKey allows it. */ abstract contract GovernanceCommunityGuarded is Shared, IGovernanceCommunityGuarded { /// @dev Community Guard Disabled bool private _communityGuardDisabled; /// @dev Whether execution is suspended bool private _suspended = false; /** * @notice Get the governor's address. The contracts inheriting this (StateChainGateway and Vault) * get the governor's address from the KeyManager through the AggKeyNonceConsumer's * inheritance. Therefore, the implementation of this function must be left * to the children. This is not implemented as a virtual onlyGovernor modifier to force * the children to implement this function - virtual modifiers don't enforce that. * @return The governor's address */ function _getGovernor() internal view virtual returns (address); /** * @notice Get the community's address. The contracts inheriting this (StateChainGateway and Vault) * get the community's address from the KeyManager through the AggKeyNonceConsumer's * inheritance. Therefore, the implementation of this function must be left * to the children. This is not implemented as a virtual onlyCommunityKey modifier to force * the children to implement this function - virtual modifiers don't enforce that. * @return The community's address */ function _getCommunityKey() internal view virtual returns (address); ////////////////////////////////////////////////////////////// // // // State-changing functions // // // ////////////////////////////////////////////////////////////// /** * @notice Enable Community Guard */ function enableCommunityGuard() external override onlyCommunityKey onlyCommunityGuardDisabled { _communityGuardDisabled = false; emit CommunityGuardDisabled(false); } /** * @notice Disable Community Guard */ function disableCommunityGuard() external override onlyCommunityKey onlyCommunityGuardEnabled { _communityGuardDisabled = true; emit CommunityGuardDisabled(true); } /** * @notice Can be used to suspend contract execution - only executable by * governance and only to be used in case of emergency. */ function suspend() external override onlyGovernor onlyNotSuspended { _suspended = true; emit Suspended(true); } /** * @notice Resume contract execution */ function resume() external override onlyGovernor onlySuspended { _suspended = false; emit Suspended(false); } ////////////////////////////////////////////////////////////// // // // Getters // // // ////////////////////////////////////////////////////////////// /** * @notice Get the Community Key * @return The CommunityKey */ function getCommunityKey() external view override returns (address) { return _getCommunityKey(); } /** * @notice Get the Community Guard state * @return The Community Guard state */ function getCommunityGuardDisabled() external view override returns (bool) { return _communityGuardDisabled; } /** * @notice Get suspended state * @return The suspended state */ function getSuspendedState() external view override returns (bool) { return _suspended; } /** * @notice Get governor address * @return The governor address */ function getGovernor() external view override returns (address) { return _getGovernor(); } ////////////////////////////////////////////////////////////// // // // Modifiers // // // ////////////////////////////////////////////////////////////// /// @dev Check that the caller is the Community Key address. modifier onlyCommunityKey() { require(msg.sender == _getCommunityKey(), "Governance: not Community Key"); _; } /// @dev Check that community has disabled the community guard. modifier onlyCommunityGuardDisabled() { require(_communityGuardDisabled, "Governance: community guard enabled"); _; } /// @dev Check that community has disabled the community guard. modifier onlyCommunityGuardEnabled() { require(!_communityGuardDisabled, "Governance: community guard disabled"); _; } /// @notice Ensure that the caller is the governor address. Calls the getGovernor /// function which is implemented by the children. modifier onlyGovernor() { require(msg.sender == _getGovernor(), "Governance: not governor"); _; } // @notice Check execution is suspended modifier onlySuspended() { require(_suspended, "Governance: not suspended"); _; } // @notice Check execution is not suspended modifier onlyNotSuspended() { require(!_suspended, "Governance: suspended"); _; } }
{ "evmVersion": "paris", "optimizer": { "enabled": true, "runs": 800 }, "libraries": { "Vault.sol": {} }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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IERC20","name":"srcToken","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes","name":"cfParameters","type":"bytes"}],"name":"xSwapToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000cd351d3626Dc244730796A3168D315168eBf08Be
-----Decoded View---------------
Arg [0] : keyManager (address): 0xcd351d3626Dc244730796A3168D315168eBf08Be
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000cd351d3626Dc244730796A3168D315168eBf08Be
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.