Overview
MATIC Balance
0 MATIC
MATIC Value
$0.00More Info
Private Name Tags
ContractCreator:
Sponsored
Latest 1 from a total of 1 transactions
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0x60806040 | 36491434 | 479 days ago | IN | Create: SwitchCelerDepositReceiver | 0 MATIC | 0.06262611 |
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Contract Name:
SwitchCelerDepositReceiver
Compiler Version
v0.8.9+commit.e5eed63a
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "../dexs/Switch.sol"; import "../lib/DataTypes.sol"; import { ICallDataExecutor } from "../interfaces/ICallDataExecutor.sol"; import { ISwitchEvent } from "../interfaces/ISwitchEvent.sol"; import "sgn-v2-contracts/contracts/message/interfaces/IMessageReceiverApp.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; contract SwitchCelerDepositReceiver is Ownable, ReentrancyGuard { address public celerMessageBus; address public callDataExecutor; address public paraswapProxy; address public augustusSwapper; ISwitchEvent public switchEvent; using SafeERC20 for IERC20; using UniversalERC20 for IERC20; event CallDataExecutorSet(address callDataExecutor); event CelerMessageBusSet(address celerMessageBus); event ParaswapProxySet(address paraswapProxy); event AugustusSwapperSet(address augustusSwapper); struct CelerDepositRequest { bytes32 id; bytes32 bridge; address srcToken; address bridgeToken; address depositToken; address recipient; address depositContract; address toApprovalAddress; // the approval address for deposit address contractOutputsToken; // optional, some contract will output a token (e.g. staking) to forward the token to the user. uint256 srcAmount; uint256 bridgeDstAmount; uint256 estimatedDepositAmount; uint32 toContractGasLimit; DataTypes.ParaswapUsageStatus paraswapUsageStatus; uint256[] dstDistribution; bytes depositCallData; bytes dstParaswapData; } constructor( address _switchEventAddress, address _callDataExecutor, address _celerMessageBus, address _paraswapProxy, address _augustusSwapper ) public { switchEvent = ISwitchEvent(_switchEventAddress); celerMessageBus = _celerMessageBus; callDataExecutor = _callDataExecutor; paraswapProxy = _paraswapProxy; augustusSwapper = _augustusSwapper; } modifier onlyMessageBus() { require(msg.sender == celerMessageBus, "caller is not message bus"); _; } function setCelerMessageBus(address _newCelerMessageBus) external onlyOwner { celerMessageBus = _newCelerMessageBus; emit CelerMessageBusSet(_newCelerMessageBus); } function setCallDataExecutor(address _newCallDataExecutor) external onlyOwner { callDataExecutor = _newCallDataExecutor; emit CallDataExecutorSet(_newCallDataExecutor); } function setParaswapProxy(address _paraswapProxy) external onlyOwner { paraswapProxy = _paraswapProxy; emit ParaswapProxySet(_paraswapProxy); } function setAugustusSwapper(address _augustusSwapper) external onlyOwner { augustusSwapper = _augustusSwapper; emit AugustusSwapperSet(_augustusSwapper); } // handler function required by MsgReceiverApp function executeMessageWithTransfer( address, //sender address _token, uint256 _amount, uint64 _srcChainId, bytes memory _message, address // executor ) external payable onlyMessageBus returns (IMessageReceiverApp.ExecutionStatus) { CelerDepositRequest memory m = abi.decode((_message), (CelerDepositRequest)); require(_token == m.bridgeToken, "bridged token must be the same as the first token in destination swap path"); uint256 depositAmount = m.estimatedDepositAmount; if (m.bridgeToken != m.depositToken) { require(m.bridgeDstAmount <= _amount, "estimated bridge token balance is insufficient"); // swap token through paraswap ICallDataExecutor(callDataExecutor).execute(IERC20(_token), augustusSwapper, paraswapProxy, _amount, 0, m.dstParaswapData); // deposit token to lending protocal ICallDataExecutor(callDataExecutor).execute(IERC20(m.depositToken), m.depositContract, m.toApprovalAddress, depositAmount, m.toContractGasLimit, m.depositCallData); _emitCrosschainDepositDone(m, _amount, depositAmount, DataTypes.DepositStatus.Succeeded); } else { depositAmount = m.bridgeDstAmount; require(depositAmount <= _amount, "deposit balance is insufficient"); if (IERC20(_token).isETH()) { ICallDataExecutor(callDataExecutor).sendNativeAndExecute{ value: _amount }( IERC20(m.depositToken), m.depositContract, m.toApprovalAddress, depositAmount, m.toContractGasLimit, m.depositCallData ); } else { // Give approval IERC20(_token).universalApprove(callDataExecutor, _amount); ICallDataExecutor(callDataExecutor).sendAndExecute( IERC20(m.depositToken), m.depositContract, m.toApprovalAddress, depositAmount, m.toContractGasLimit, m.depositCallData ); } _sendToRecipient(_token, m.recipient, _amount - depositAmount); _emitCrosschainDepositDone(m, _amount, _amount, DataTypes.DepositStatus.Succeeded); } // always return true since swap failure is already handled in-place return IMessageReceiverApp.ExecutionStatus.Success; } // called on source chain for handling of bridge failures (bad liquidity, bad slippage, etc...) function executeMessageWithTransferRefund( address _token, uint256 _amount, bytes calldata _message, address // executor ) external payable onlyMessageBus returns (IMessageReceiverApp.ExecutionStatus) { CelerDepositRequest memory m = abi.decode((_message), (CelerDepositRequest)); _sendToRecipient(_token, m.recipient, _amount); switchEvent.emitCrosschainDepositRequest( m.id, bytes32(0), m.bridge, m.recipient, m.depositContract, // contract address for deposit m.toApprovalAddress, // the approval address for deposit m.srcToken, m.depositToken, m.srcAmount, m.estimatedDepositAmount, DataTypes.DepositStatus.Fallback ); return IMessageReceiverApp.ExecutionStatus.Success; } // handler function required by MsgReceiverApp // called only if handleMessageWithTransfer above was reverted function executeMessageWithTransferFallback( address, // sender address _token, // token, uint256 _amount, // amount uint64 _srcChainId, bytes memory _message, address // executor ) external payable onlyMessageBus returns (IMessageReceiverApp.ExecutionStatus) { CelerDepositRequest memory m = abi.decode((_message), (CelerDepositRequest)); _sendToRecipient(_token, m.recipient, _amount); _emitCrosschainSwapDone(m, _amount, 0, DataTypes.SwapStatus.Fallback); // we can do in this app as the swap failures are already handled in executeMessageWithTransfer return IMessageReceiverApp.ExecutionStatus.Success; } function _sendToRecipient( address token, address recipient, uint256 amount ) internal { if (IERC20(token).isETH()) { payable(recipient).transfer(amount); } else { IERC20(token).universalTransfer(recipient, amount); } } function transferToken(address token, uint256 amount, address recipient) external onlyOwner { IERC20(token).universalTransfer(recipient, amount); } function _emitCrosschainDepositDone( CelerDepositRequest memory m, uint256 srcAmount, uint256 dstAmount, DataTypes.DepositStatus status ) internal { switchEvent.emitCrosschainDepositDone(m.id, m.bridge, m.recipient, m.depositContract, m.toApprovalAddress, m.bridgeToken, m.depositToken, srcAmount, dstAmount, status); } function _emitCrosschainSwapDone( CelerDepositRequest memory m, uint256 srcAmount, uint256 dstAmount, DataTypes.SwapStatus status ) internal { switchEvent.emitCrosschainSwapDone(m.id, m.bridge, m.recipient, m.bridgeToken, m.depositToken, srcAmount, dstAmount, status); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// 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 v4.6.0) (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 (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/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 v4.8.0) (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 // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "../interfaces/IUniswapFactory.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; abstract contract ISwitchView { struct ReturnArgs { IERC20 fromToken; IERC20 destToken; uint256 amount; uint256 parts; } struct CalculateArgs { IERC20 fromToken; IERC20 destToken; IUniswapFactory factory; uint256 amount; uint256 parts; } function getExpectedReturn( IERC20 fromToken, IERC20 destToken, uint256 amount, uint256 parts ) public virtual view returns ( uint256 returnAmount, uint256[] memory distribution ); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; abstract contract IWETH is IERC20 { function deposit() external virtual payable; function withdraw(uint256 amount) virtual external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "./ISwitchView.sol"; import "./IWETH.sol"; import "../lib/DisableFlags.sol"; import "../lib/UniversalERC20.sol"; import "../interfaces/IUniswapFactory.sol"; import "../lib/UniswapExchangeLib.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; abstract contract SwitchRoot is ISwitchView { using DisableFlags for uint256; using UniversalERC20 for IERC20; using UniversalERC20 for IWETH; using UniswapExchangeLib for IUniswapExchange; address public ETH_ADDRESS = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE); address public ZERO_ADDRESS = address(0); uint256 public dexCount; uint256 public pathCount; uint256 public pathSplit; IWETH public weth; // chain's native token IWETH public otherToken; //could be weth on a non-eth chain or other mid token(like busd) address[] public factories; int256 internal constant VERY_NEGATIVE_VALUE = -1e72; constructor(address _weth, address _otherToken, uint256 _pathCount, uint256 _pathSplit, address[] memory _factories) { weth = IWETH(_weth); otherToken = IWETH(_otherToken); pathCount = _pathCount; pathSplit = _pathSplit; dexCount = _factories.length; for (uint256 i = 0; i < _factories.length; i++) { factories.push(_factories[i]); } } function _findBestDistribution( uint256 s, // parts int256[][] memory amounts // exchangesReturns ) internal view returns ( int256 returnAmount, uint256[] memory distribution ) { uint256 n = amounts.length; int256[][] memory answer = new int256[][](n); // int[n][s+1] uint256[][] memory parent = new uint256[][](n); // int[n][s+1] for (uint i = 0; i < n; i++) { answer[i] = new int256[](s + 1); parent[i] = new uint256[](s + 1); } for (uint j = 0; j <= s; j++) { answer[0][j] = amounts[0][j]; for (uint i = 1; i < n; i++) { answer[i][j] = -1e72; } parent[0][j] = 0; } for (uint i = 1; i < n; i++) { for (uint j = 0; j <= s; j++) { answer[i][j] = answer[i - 1][j]; parent[i][j] = j; for (uint k = 1; k <= j; k++) { if (answer[i - 1][j - k] + amounts[i][k] > answer[i][j]) { answer[i][j] = answer[i - 1][j - k] + amounts[i][k]; parent[i][j] = j - k; } } } } distribution = new uint256[](dexCount*pathCount*pathSplit); uint256 partsLeft = s; unchecked { for (uint curExchange = n - 1; partsLeft > 0; curExchange--) { distribution[curExchange] = partsLeft - parent[curExchange][partsLeft]; partsLeft = parent[curExchange][partsLeft]; } } returnAmount = (answer[n - 1][s] == VERY_NEGATIVE_VALUE) ? int256(0) : answer[n - 1][s]; } function _linearInterpolation( uint256 value, uint256 parts ) internal pure returns (uint256[] memory rets) { rets = new uint256[](parts); for (uint i = 0; i < parts; i++) { rets[i] = value * (i + 1) / parts; } } function _tokensEqual( IERC20 tokenA, IERC20 tokenB ) internal pure returns (bool) { return ((tokenA.isETH() && tokenB.isETH()) || tokenA == tokenB); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "../core/ISwitchView.sol"; import "../core/SwitchRoot.sol"; import "../interfaces/ISwitchEvent.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; contract Switch is Ownable, SwitchRoot, ReentrancyGuard { using UniswapExchangeLib for IUniswapExchange; using UniversalERC20 for IERC20; using SafeERC20 for IERC20; ISwitchView public switchView; ISwitchEvent public switchEvent; address public reward; address private paraswapProxy; address private augustusSwapper; address public tradeFeeReceiver; uint256 public tradeFeeRate; mapping (address => uint256) public partnerFeeRates; uint256 public constant FEE_BASE = 10000; event RewardSet(address reward); event SwitchEventSet(ISwitchEvent switchEvent); event PartnerFeeSet(address partner, uint256 feeRate); event TradeFeeSet(uint256 tradeFee); event TradeFeeReceiverSet(address tradeFeeReceiver); event ParaswapProxySet(address paraswapProxy); event AugustusSwapperSet(address augustusSwapper); constructor( address _weth, address _otherToken, uint256 _pathCount, uint256 _pathSplit, address[] memory _factories, address _switchViewAddress, address _switchEventAddress, address _paraswapProxy, address _augustusSwapper ) SwitchRoot(_weth, _otherToken, _pathCount, _pathSplit, _factories) public { switchView = ISwitchView(_switchViewAddress); switchEvent = ISwitchEvent(_switchEventAddress); paraswapProxy = _paraswapProxy; augustusSwapper = _augustusSwapper; reward = msg.sender; } fallback() external payable { // solium-disable-next-line security/no-tx-origin require(msg.sender != tx.origin); } function setReward(address _reward) external onlyOwner { reward = _reward; emit RewardSet(_reward); } function setSwitchEvent(ISwitchEvent _switchEvent) external onlyOwner { switchEvent = _switchEvent; emit SwitchEventSet(_switchEvent); } function setParaswapProxy(address _paraswapProxy) external onlyOwner { paraswapProxy = _paraswapProxy; emit ParaswapProxySet(_paraswapProxy); } function setAugustusSwapper(address _augustusSwapper) external onlyOwner { augustusSwapper = _augustusSwapper; emit AugustusSwapperSet(_augustusSwapper); } function setPartnerFeeRate(address _partner, uint256 _feeRate) external onlyOwner { partnerFeeRates[_partner] = _feeRate; emit PartnerFeeSet(_partner, _feeRate); } function setTradeFeeRate(uint256 _tradeFeeRate) external onlyOwner { tradeFeeRate = _tradeFeeRate; emit TradeFeeSet(_tradeFeeRate); } function setTradeFeeReceiver(address _tradeFeeReceiver) external onlyOwner { tradeFeeReceiver = _tradeFeeReceiver; emit TradeFeeReceiverSet(_tradeFeeReceiver); } function getTokenBalance(address token) external view onlyOwner returns(uint256 amount) { amount = IERC20(token).universalBalanceOf(address(this)); } function transferToken(address token, uint256 amount, address recipient) external onlyOwner { IERC20(token).universalTransfer(recipient, amount); } function getExpectedReturn( IERC20 fromToken, IERC20 destToken, uint256 amount, uint256 parts ) public override view returns ( uint256 returnAmount, uint256[] memory distribution ) { (returnAmount, distribution) = switchView.getExpectedReturn(fromToken, destToken, amount, parts); } function swap( IERC20 fromToken, IERC20 destToken, uint256 amount, uint256 expectedReturn, uint256 minReturn, address recipient, uint256[] memory distribution ) public payable nonReentrant returns (uint256 returnAmount) { require(expectedReturn >= minReturn, "expectedReturn must be equal or larger than minReturn"); if (fromToken == destToken) { revert("it's not allowed to swap with same token"); } uint256 parts = 0; uint256 lastNonZeroIndex = 0; for (uint i = 0; i < distribution.length; i++) { if (distribution[i] > 0) { parts += distribution[i]; lastNonZeroIndex = i; } } if (parts == 0) { if (fromToken.isETH()) { payable(msg.sender).transfer(msg.value); return msg.value; } return amount; } fromToken.universalTransferFrom(msg.sender, address(this), amount); returnAmount = _swapInternalForSingleSwap(distribution, amount, parts, lastNonZeroIndex, fromToken, destToken); if (returnAmount > 0) { require(returnAmount >= minReturn, "Switch: Return amount was not enough"); if (returnAmount > expectedReturn) { destToken.universalTransfer(recipient, expectedReturn); destToken.universalTransfer(reward, returnAmount - expectedReturn); switchEvent.emitSwapped(msg.sender, recipient, fromToken, destToken, amount, expectedReturn, returnAmount - expectedReturn); } else { destToken.universalTransfer(recipient, returnAmount); switchEvent.emitSwapped(msg.sender, recipient, fromToken, destToken, amount, returnAmount, 0); } } else { if (fromToken.universalBalanceOf(address(this)) > amount) { fromToken.universalTransfer(msg.sender, amount); } else { fromToken.universalTransfer(msg.sender, fromToken.universalBalanceOf(address(this))); } } } function swapWithParaswap( IERC20 fromToken, IERC20 destToken, uint256 amount, uint256 destAmount, address recipient, bytes memory callData ) public payable nonReentrant { if (fromToken == destToken) { revert("it's not allowed to swap with same token"); } fromToken.universalTransferFrom(msg.sender, address(this), amount); _callParaswap(fromToken, amount, callData); switchEvent.emitSwapped(msg.sender, recipient, fromToken, destToken, amount, destAmount, 0); } function getFeeInfo( uint256 amount, address partner ) public view returns ( uint256 tradeRate, uint256 partnerFeeRate, uint256 tradeFee, uint256 partnerFee, uint256 remainAmount ) { tradeRate = tradeFeeRate; tradeFee = 0; partnerFeeRate = partnerFeeRates[partner]; partnerFee = 0; if (tradeFeeRate > 0) { tradeFee = tradeFeeRate * amount / FEE_BASE; } if (partnerFeeRates[partner] > 0) { partnerFee = partnerFeeRates[partner] * amount / FEE_BASE; } remainAmount = amount - tradeFee - partnerFee; } function getTradeFee( uint256 amount ) public view returns ( uint256 feeRate, uint256 tradeFee, uint256 remainAmount ) { feeRate = tradeFeeRate; tradeFee = 0; if (tradeFeeRate > 0) { tradeFee = tradeFeeRate * amount / FEE_BASE; } remainAmount = amount - tradeFee; } function getPartnerFee( uint256 amount, address partner ) public view returns ( uint256 feeRate, uint256 partnerFee, uint256 remainAmount ) { feeRate = partnerFeeRates[partner]; partnerFee = 0; if (partnerFeeRates[partner] > 0) { partnerFee = partnerFeeRates[partner] * amount / FEE_BASE; } remainAmount = amount - partnerFee; } function _swapInternalWithParaSwap( IERC20 fromToken, IERC20 destToken, uint256 amount, bytes memory callData ) internal returns ( uint256 totalAmount ) { if (fromToken == destToken) { revert("it's not allowed to swap with same token"); } _callParaswap(fromToken, amount, callData); totalAmount = destToken.universalBalanceOf(address(this)); switchEvent.emitSwapped(msg.sender, address(this), fromToken, destToken, amount, totalAmount, 0); } function _callParaswap( IERC20 token, uint256 amount, bytes memory callData ) internal { uint256 ethAmountToTransfert = 0; if (token.isETH()) { require(address(this).balance >= amount, "ETH balance is insufficient"); ethAmountToTransfert = amount; } else { token.universalApprove(paraswapProxy, amount); } (bool success,) = augustusSwapper.call{ value: ethAmountToTransfert }(callData); require(success, "Paraswap execution failed"); } function _swapInternalForSingleSwap( uint256[] memory distribution, uint256 amount, uint256 parts, uint256 lastNonZeroIndex, IERC20 fromToken, IERC20 destToken ) internal returns ( uint256 totalAmount ) { require(distribution.length <= dexCount*pathCount, "Switch: Distribution array should not exceed factories array size"); uint256 remainingAmount = amount; uint256 swappedAmount = 0; for (uint i = 0; i < distribution.length; i++) { if (distribution[i] == 0) { continue; } uint256 swapAmount = amount * distribution[i] / parts; if (i == lastNonZeroIndex) { swapAmount = remainingAmount; } remainingAmount -= swapAmount; if (i % pathCount == 0) { swappedAmount = _swap(fromToken, destToken, swapAmount, IUniswapFactory(factories[i/pathCount])); } else if (i % pathCount == 1) { swappedAmount = _swapETH(fromToken, destToken, swapAmount, IUniswapFactory(factories[i/pathCount])); } else { swappedAmount = _swapOtherToken(fromToken, destToken, swapAmount, IUniswapFactory(factories[i/pathCount])); } totalAmount += swappedAmount; } } function _getAmountAfterFee( IERC20 token, uint256 amount, address partner ) internal returns ( uint256 amountAfterFee ) { amountAfterFee = amount; if (tradeFeeRate > 0) { token.universalTransfer(tradeFeeReceiver, tradeFeeRate * amount / FEE_BASE); amountAfterFee = amount - tradeFeeRate * amount / FEE_BASE; } if (partnerFeeRates[partner] > 0) { token.universalTransfer(partner, partnerFeeRates[partner] * amount / FEE_BASE); amountAfterFee = amount - partnerFeeRates[partner] * amount / FEE_BASE; } } // Swap helpers function _swapInternal( IERC20 fromToken, IERC20 destToken, uint256 amount, IUniswapFactory factory ) internal returns ( uint256 returnAmount ) { if (fromToken.isETH()) { weth.deposit{value: amount}(); } IERC20 fromTokenReal = fromToken.isETH() ? weth : fromToken; IERC20 toTokenReal = destToken.isETH() ? weth : destToken; IUniswapExchange exchange = factory.getPair(fromTokenReal, toTokenReal); bool needSync; bool needSkim; (returnAmount, needSync, needSkim) = exchange.getReturn(fromTokenReal, toTokenReal, amount); if (needSync) { exchange.sync(); } else if (needSkim) { exchange.skim(0x46Fd07da395799F113a7584563b8cB886F33c2bc); } fromTokenReal.universalTransfer(address(exchange), amount); if (uint160(address(fromTokenReal)) < uint160(address(toTokenReal))) { exchange.swap(0, returnAmount, address(this), ""); } else { exchange.swap(returnAmount, 0, address(this), ""); } if (destToken.isETH()) { weth.withdraw(weth.balanceOf(address(this))); } } function _swapOverMid( IERC20 fromToken, IERC20 midToken, IERC20 destToken, uint256 amount, IUniswapFactory factory ) internal returns ( uint256 returnAmount ) { returnAmount = _swapInternal( midToken, destToken, _swapInternal( fromToken, midToken, amount, factory ), factory ); } function _swap( IERC20 fromToken, IERC20 destToken, uint256 amount, IUniswapFactory factory ) internal returns ( uint256 returnAmount ) { returnAmount = _swapInternal( fromToken, destToken, amount, factory ); } function _swapETH( IERC20 fromToken, IERC20 destToken, uint256 amount, IUniswapFactory factory ) internal returns ( uint256 returnAmount ) { returnAmount = _swapOverMid( fromToken, weth, destToken, amount, factory ); } function _swapOtherToken( IERC20 fromToken, IERC20 destToken, uint256 amount, IUniswapFactory factory ) internal returns ( uint256 returnAmount ) { returnAmount = _swapOverMid( fromToken, otherToken, destToken, amount, factory ); } }
pragma solidity >=0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface ICallDataExecutor { function execute( IERC20 token, address addr, address approveAddress, uint256 amount, uint256 gasLimit, bytes memory payload ) external payable; function sendNativeAndExecute( IERC20 token, address callTo, address approveAddress, uint256 amount, uint256 gasLimit, bytes memory payload ) external payable; function sendAndExecute( IERC20 token, address callTo, address approveAddress, uint256 amount, uint256 gasLimit, bytes memory payload ) external payable; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "../lib/DataTypes.sol"; interface ISwitchEvent { function emitSwapped( address from, address recipient, IERC20 fromToken, IERC20 destToken, uint256 fromAmount, uint256 destAmount, uint256 reward ) external; function emitParaswapSwapped( address from, IERC20 fromToken, uint256 fromAmount ) external; function emitCrosschainSwapRequest( bytes32 id, bytes32 bridgeTransferId, bytes32 bridge, // bridge slug address from, // user address address fromToken, // source token on sending chain address bridgeToken, // bridge token on sending chain address destToken, // dest token on receiving chain uint256 fromAmount, // source token amount on sending chain uint256 bridgeAmount, // swapped amount on sending chain uint256 dstAmount, // estimated amount of dest token on receiving chain DataTypes.SwapStatus status ) external; function emitCrosschainDepositRequest( bytes32 id, bytes32 bridgeTransferId, bytes32 bridge, // bridge slug address from, // user address address depositContract, // contract address for deposit address toApprovalAddress, // the approval address for deposit address fromToken, // source token on sending chain address depositToken, // dest token on receiving chain uint256 fromAmount, // source token amount on sending chain uint256 depositAmount, // estimated amount of dest token on receiving chain DataTypes.DepositStatus status ) external; function emitCrosschainSwapDone( bytes32 id, bytes32 bridge, address from, // user address address bridgeToken, // source token on receiving chain address destToken, // dest token on receiving chain uint256 bridgeAmount, // bridge token amount on receiving chain uint256 destAmount, //dest token amount on receiving chain DataTypes.SwapStatus status ) external; function emitCrosschainDepositDone( bytes32 id, bytes32 bridge, address from, // user address address depositContract, // contract address for deposit address toApprovalAddress, // the approval address for deposit address bridgeToken, // source token on receiving chain address depositToken, // dest token on receiving chain uint256 bridgeAmount, // bridge token amount on receiving chain uint256 depositAmount, //dest token amount on receiving chain DataTypes.DepositStatus status ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; interface IUniswapExchange { function getReserves() external view returns(uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IUniswapExchange.sol"; interface IUniswapFactory { function getPair(IERC20 tokenA, IERC20 tokenB) external view returns (IUniswapExchange pair); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; /** * @title DataTypes * @dev Definition of shared types */ library DataTypes { /// @notice Type for representing a swapping status type enum SwapStatus { Null, Succeeded, Failed, Fallback } enum DepositStatus { Null, Succeeded, Failed, Fallback } /// @notice Type for representing a paraswap usage status enum ParaswapUsageStatus { None, OnSrcChain, OnDestChain, Both } /// @notice Swap params struct SwapInfo { address srcToken; address dstToken; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; library DisableFlags { function check( uint256 flags, uint256 flag ) internal pure returns (bool) { return (flags & flag) != 0; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "../interfaces/IUniswapExchange.sol"; import "./Math.sol"; import "./UniversalERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; library UniswapExchangeLib { using Math for uint256; using UniversalERC20 for IERC20; function getReturn( IUniswapExchange exchange, IERC20 fromToken, IERC20 destToken, uint amountIn ) internal view returns (uint256 result, bool needSync, bool needSkim) { uint256 reserveIn = fromToken.universalBalanceOf(address(exchange)); uint256 reserveOut = destToken.universalBalanceOf(address(exchange)); (uint112 reserve0, uint112 reserve1,) = exchange.getReserves(); if (fromToken > destToken) { (reserve0, reserve1) = (reserve1, reserve0); } needSync = (reserveIn < reserve0 || reserveOut < reserve1); needSkim = !needSync && (reserveIn > reserve0 || reserveOut > reserve1); uint256 amountInWithFee = amountIn * 997; uint256 numerator = amountInWithFee * Math.min(reserveOut, reserve1); uint256 denominator = Math.min(reserveIn, reserve0) * 1000 + amountInWithFee; result = (denominator == 0) ? 0 : numerator / denominator; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.9; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; library UniversalERC20 { using SafeERC20 for IERC20; address private constant ZERO_ADDRESS = address(0x0000000000000000000000000000000000000000); address private constant ETH_ADDRESS = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE); function universalTransfer( IERC20 token, address to, uint256 amount ) internal returns (bool) { if (amount == 0) { return true; } if (isETH(token)) { payable(to).transfer(amount); return true; } else { token.safeTransfer(to, amount); return true; } } function universalTransferFrom( IERC20 token, address from, address to, uint256 amount ) internal { if (amount == 0) { return; } if (isETH(token)) { require(from == msg.sender && msg.value >= amount, "Wrong useage of ETH.universalTransferFrom()"); if (to != address(this)) { payable(to).transfer(amount); } // commented following lines for passing celer fee properly. // if (msg.value > amount) { // payable(msg.sender).transfer(msg.value - amount); // } } else { token.safeTransferFrom(from, to, amount); } } function universalTransferFromSenderToThis( IERC20 token, uint256 amount ) internal { if (amount == 0) { return; } if (isETH(token)) { if (msg.value > amount) { // Return remainder if exist payable(msg.sender).transfer(msg.value - amount); } } else { token.safeTransferFrom(msg.sender, address(this), amount); } } function universalApprove( IERC20 token, address to, uint256 amount ) internal { if (!isETH(token)) { if (amount == 0) { token.safeApprove(to, 0); return; } uint256 approvedAmount = token.allowance(address(this), to); if (approvedAmount < amount) { token.safeIncreaseAllowance(to, amount - approvedAmount); } else if (approvedAmount > amount) { token.safeDecreaseAllowance(to, approvedAmount - amount); } } } function universalBalanceOf(IERC20 token, address who) internal view returns (uint256) { if (isETH(token)) { return who.balance; } else { return token.balanceOf(who); } } function isETH(IERC20 token) internal pure returns(bool) { return (address(token) == address(ZERO_ADDRESS) || address(token) == address(ETH_ADDRESS)); } // function notExist(IERC20 token) internal pure returns(bool) { // return (address(token) == address(-1)); // } }
// SPDX-License-Identifier: GPL-3.0-only pragma solidity >=0.8.0; interface IMessageReceiverApp { enum ExecutionStatus { Fail, // execution failed, finalized Success, // execution succeeded, finalized Retry // execution rejected, can retry later } /** * @notice Called by MessageBus (MessageBusReceiver) if the process is originated from MessageBus (MessageBusSender)'s * sendMessageWithTransfer it is only called when the tokens are checked to be arrived at this contract's address. * @param _sender The address of the source app contract * @param _token The address of the token that comes out of the bridge * @param _amount The amount of tokens received at this contract through the cross-chain bridge. * the contract that implements this contract can safely assume that the tokens will arrive before this * function is called. * @param _srcChainId The source chain ID where the transfer is originated from * @param _message Arbitrary message bytes originated from and encoded by the source app contract * @param _executor Address who called the MessageBus execution function */ function executeMessageWithTransfer( address _sender, address _token, uint256 _amount, uint64 _srcChainId, bytes calldata _message, address _executor ) external payable returns (ExecutionStatus); /** * @notice Only called by MessageBus (MessageBusReceiver) if * 1. executeMessageWithTransfer reverts, or * 2. executeMessageWithTransfer returns ExecutionStatus.Fail * @param _sender The address of the source app contract * @param _token The address of the token that comes out of the bridge * @param _amount The amount of tokens received at this contract through the cross-chain bridge. * the contract that implements this contract can safely assume that the tokens will arrive before this * function is called. * @param _srcChainId The source chain ID where the transfer is originated from * @param _message Arbitrary message bytes originated from and encoded by the source app contract * @param _executor Address who called the MessageBus execution function */ function executeMessageWithTransferFallback( address _sender, address _token, uint256 _amount, uint64 _srcChainId, bytes calldata _message, address _executor ) external payable returns (ExecutionStatus); /** * @notice Called by MessageBus (MessageBusReceiver) to process refund of the original transfer from this contract * @param _token The token address of the original transfer * @param _amount The amount of the original transfer * @param _message The same message associated with the original transfer * @param _executor Address who called the MessageBus execution function */ function executeMessageWithTransferRefund( address _token, uint256 _amount, bytes calldata _message, address _executor ) external payable returns (ExecutionStatus); /** * @notice Called by MessageBus (MessageBusReceiver) * @param _sender The address of the source app contract * @param _srcChainId The source chain ID where the transfer is originated from * @param _message Arbitrary message bytes originated from and encoded by the source app contract * @param _executor Address who called the MessageBus execution function */ function executeMessage( address _sender, uint64 _srcChainId, bytes calldata _message, address _executor ) external payable returns (ExecutionStatus); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_switchEventAddress","type":"address"},{"internalType":"address","name":"_callDataExecutor","type":"address"},{"internalType":"address","name":"_celerMessageBus","type":"address"},{"internalType":"address","name":"_paraswapProxy","type":"address"},{"internalType":"address","name":"_augustusSwapper","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"augustusSwapper","type":"address"}],"name":"AugustusSwapperSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"callDataExecutor","type":"address"}],"name":"CallDataExecutorSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"celerMessageBus","type":"address"}],"name":"CelerMessageBusSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"paraswapProxy","type":"address"}],"name":"ParaswapProxySet","type":"event"},{"inputs":[],"name":"augustusSwapper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"callDataExecutor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"celerMessageBus","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint64","name":"_srcChainId","type":"uint64"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"","type":"address"}],"name":"executeMessageWithTransfer","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint64","name":"_srcChainId","type":"uint64"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"","type":"address"}],"name":"executeMessageWithTransferFallback","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_message","type":"bytes"},{"internalType":"address","name":"","type":"address"}],"name":"executeMessageWithTransferRefund","outputs":[{"internalType":"enum IMessageReceiverApp.ExecutionStatus","name":"","type":"uint8"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paraswapProxy","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_augustusSwapper","type":"address"}],"name":"setAugustusSwapper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newCallDataExecutor","type":"address"}],"name":"setCallDataExecutor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newCelerMessageBus","type":"address"}],"name":"setCelerMessageBus","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_paraswapProxy","type":"address"}],"name":"setParaswapProxy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"switchEvent","outputs":[{"internalType":"contract ISwitchEvent","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"transferToken","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000002f421339aa22162555a2b74b44f92954d70b27cd0000000000000000000000005844f597e2824ec53e59c3ebe5ae7e54769cb965000000000000000000000000afdb9c40c7144022811f034ee07ce2e110093fe6000000000000000000000000216b4b4ba9f3e719726886d34a177484278bfcae000000000000000000000000def171fe48cf0115b1d80b88dc8eab59176fee57
-----Decoded View---------------
Arg [0] : _switchEventAddress (address): 0x2f421339aA22162555a2B74b44f92954D70b27CD
Arg [1] : _callDataExecutor (address): 0x5844f597E2824Ec53e59c3EbE5Ae7E54769cB965
Arg [2] : _celerMessageBus (address): 0xaFDb9C40C7144022811F034EE07Ce2E110093fe6
Arg [3] : _paraswapProxy (address): 0x216B4B4Ba9F3e719726886d34a177484278Bfcae
Arg [4] : _augustusSwapper (address): 0xDEF171Fe48CF0115B1d80b88dc8eAB59176FEe57
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000002f421339aa22162555a2b74b44f92954d70b27cd
Arg [1] : 0000000000000000000000005844f597e2824ec53e59c3ebe5ae7e54769cb965
Arg [2] : 000000000000000000000000afdb9c40c7144022811f034ee07ce2e110093fe6
Arg [3] : 000000000000000000000000216b4b4ba9f3e719726886d34a177484278bfcae
Arg [4] : 000000000000000000000000def171fe48cf0115b1d80b88dc8eab59176fee57
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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.