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0x98fa82b765974a20cebb3752bccf1054a76c4d4803105d90fa00c514bc4a1874 | - | (pending) | 30 days ago | IN | 0.1 ETH | (Pending) | |||
Execute Order | 11675193 | 8 hrs ago | IN | 0 ETH | 0.00011606 | ||||
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Contract Name:
BeefyZapRouter
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 1000000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol"; import { Pausable } from "@openzeppelin/contracts/security/Pausable.sol"; import { ReentrancyGuard } from "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import { BytesLib } from "solidity-bytes-utils/contracts/BytesLib.sol"; import { IBeefyTokenManager } from "../interfaces/IBeefyTokenManager.sol"; import { IBeefyZapRouter } from "../interfaces/IBeefyZapRouter.sol"; import { IPermit2 } from "../interfaces/IPermit2.sol"; import { BeefyTokenManager} from "./BeefyTokenManager.sol"; import { ZapErrors } from "./ZapErrors.sol"; /** * @title Zap router for Beefy vaults * @author kexley, Beefy * @notice Adaptable router for zapping tokens to and from Beefy vaults * @dev Router that allows arbitary calls to external contracts. Users can zap directly or sign * using Permit2 to allow a relayer to execute zaps on their behalf. Do not directly approve this * contract for spending your tokens, approve the TokenManager instead */ contract BeefyZapRouter is IBeefyZapRouter, ZapErrors, Ownable, Pausable, ReentrancyGuard { using SafeERC20 for IERC20; using BytesLib for bytes; /** * @dev Witness string used in signing an order */ string private constant ORDER_STRING = "Order order)Order(Input[] inputs,Output[] outputs,Relay relay,address user,address recipient)Input(address token,uint256 amount)Output(address token,uint256 minOutputAmount)Relay(address target,uint256 value,bytes data)TokenPermissions(address token,uint256 amount)"; /** * @dev Witness typehash used in signing an order */ bytes32 private constant ORDER_TYPEHASH = keccak256("Order(Input[] inputs,Output[] outputs,Relay relay,address user,address recipient)Input(address token,uint256 amount)Output(address token,uint256 minOutputAmount)Relay(address target,uint256 value,bytes data)"); /** * @notice Permit2 immutable address */ address public immutable permit2; /** * @notice Token manager immutable address */ address public immutable tokenManager; /** * @notice Token and amount sent to the recipient at end of a zap * @param token Address of the token sent to recipient * @param amount Amount of the token sent to the recipient */ event TokenReturned(address indexed token, uint256 amount); /** * @notice External relay call at end of zap * @param target Address of the target * @param value Ether value of the call * @param data Payload of the external call */ event RelayData(address indexed target, uint256 value, bytes data); /** * @notice Completed order * @param order Order that has been fulfilled * @param caller Address of the order's executor * @param recipient Address of the order's recipient */ event FulfilledOrder(Order indexed order, address indexed caller, address indexed recipient); /** * @dev Initialize permit2 address and create an implementation of the token manager * @param _permit2 Address for the permit2 contract */ constructor(address _permit2) { permit2 = _permit2; tokenManager = address(new BeefyTokenManager()); } /** * @notice Execute an order directly * @dev The user executes their own order directly. User must have already approved the token * manager to move the tokens * @param _order Order containing how many tokens to pull and the slippage amounts on outputs * @param _route Route containing the steps to reach the output */ function executeOrder(Order calldata _order, Step[] calldata _route) external payable nonReentrant whenNotPaused { if (msg.sender != _order.user) revert InvalidCaller(_order.user, msg.sender); IBeefyTokenManager(tokenManager).pullTokens(_order.user, _order.inputs); _executeOrder(_order, _route); } /** * @notice Execute an order using a signature from the input token owner * @dev Execute an order indirectly by passing a signed permit from Permit2 that contains the * order as witness data. The user who owns the tokens must have already approved Permit2. * Route is supplied at this stage as slippages and amounts are already set in the signed order * @param _permit Struct of tokens that have been permitted and the nonce/deadline * @param _order Order that details the input/output tokens and amounts * @param _signature Resulting string from signing the permit and order data * @param _route Actual steps that will transform input tokens to output tokens */ function executeOrder( IPermit2.PermitBatchTransferFrom calldata _permit, Order calldata _order, bytes calldata _signature, Step[] calldata _route ) external nonReentrant whenNotPaused { IPermit2(permit2).permitWitnessTransferFrom( _permit, _getTransferDetails(_order.inputs), _order.user, keccak256(abi.encode(ORDER_TYPEHASH, _order)), ORDER_STRING, _signature ); _executeOrder(_order, _route); } /** * @dev Executes a valid order by executing the steps on the route, validating the output * amounts and then sending them to the recipient. A final external call is made to relay * data in the order to chain together calls * @param _order Order struct with details of inputs and outputs * @param _route Actual steps to transform inputs to outputs */ function _executeOrder(Order calldata _order, Step[] calldata _route) private { _executeSteps(_route); _returnAssets(_order.outputs, _order.recipient, _order.relay.value); _executeRelay(_order.relay); emit FulfilledOrder(_order, msg.sender, _order.recipient); } /** * @dev Executes various steps to achieve the order outputs by making external calls. Balance * data is dynamically inserted into payloads to always move the full balances of this contract * @param _route Array of the steps the contract will execute */ function _executeSteps(Step[] calldata _route) private { uint256 routeLength = _route.length; for (uint256 i; i < routeLength;) { Step calldata step = _route[i]; ( address stepTarget, uint256 value, bytes memory callData, StepToken[] calldata stepTokens ) = (step.target, step.value, step.data, step.tokens); if (stepTarget == permit2 || stepTarget == tokenManager) revert TargetingInvalidContract(stepTarget); uint256 balance; uint256 callDataLength = callData.length; uint256 stepTokensLength = stepTokens.length; for (uint256 j; j < stepTokensLength;) { StepToken calldata stepToken = stepTokens[j]; (address stepTokenAddress, int32 stepTokenIndex) = (stepToken.token, stepToken.index); if (stepTokenAddress == address(0)) { value = address(this).balance; } else { balance = IERC20(stepTokenAddress).balanceOf(address(this)); _approveToken(stepTokenAddress, stepTarget, balance); if (stepTokenIndex >= 0) { uint256 idx = uint256(int256(stepTokenIndex)); callData = bytes.concat( callData.slice(0, idx), abi.encode(balance), callData.slice(idx + 32, callDataLength - (idx + 32)) ); } } unchecked { ++j; } } (bool success, bytes memory result) = stepTarget.call{value: value}(callData); if (!success) _propagateError(stepTarget, value, callData, result); unchecked { ++i; } } } /** * @dev Approve a token to be spent by an address if not already approved enough * @param _token Address of token to be approved * @param _spender Address of spender that will be allowed to move tokens * @param _amount Number of tokens that are going to be spent */ function _approveToken(address _token, address _spender, uint256 _amount) private { if (IERC20(_token).allowance(address(this), _spender) < _amount) { IERC20(_token).forceApprove(_spender, type(uint256).max); } } /** * @dev Bubble up an error message from an underlying contract * @param _target Address that the call was sent to * @param _value Amount of ether sent with the call * @param _data Payload data of the call * @param _returnedData Returned data from the call */ function _propagateError(address _target, uint256 _value, bytes memory _data, bytes memory _returnedData) private pure { if (_returnedData.length == 0) revert CallFailed(_target, _value, _data); assembly { revert(add(32, _returnedData), mload(_returnedData)) } } /** * @dev Return the outputs to the recipient address * @param _outputs Token addresses and amounts to validate against to ensure no major slippage * @param _recipient Address of the receiver of the outputs * @param _relayValue Unwrapped native amount that is reserved for calling the relay address */ function _returnAssets(Output[] calldata _outputs, address _recipient, uint256 _relayValue) private { uint256 balance; uint256 outputsLength = _outputs.length; for (uint256 i; i < outputsLength;) { Output calldata output = _outputs[i]; (address outputToken, uint256 outputMinAmount) = (output.token, output.minOutputAmount); if (outputToken == address(0)) { balance = address(this).balance; if (balance < outputMinAmount) { revert Slippage(outputToken, outputMinAmount, balance); } if (balance > _relayValue) { balance -= _relayValue; (bool success,) = _recipient.call{value: balance}(""); if (!success) revert EtherTransferFailed(_recipient); } } else { balance = IERC20(outputToken).balanceOf(address(this)); if (balance < outputMinAmount) { revert Slippage(outputToken, outputMinAmount, balance); } else if (balance > 0) { IERC20(outputToken).safeTransfer(_recipient, balance); } } emit TokenReturned(outputToken, balance); unchecked { ++i; } } } /** * @dev Call an external contract at the end of a zap with a payload signed in the order * @param _relay Target address and payload data in a struct */ function _executeRelay(Relay calldata _relay) private { (address relayTarget, uint256 relayValue, bytes calldata relaydata) = (_relay.target, _relay.value, _relay.data); if (relayTarget != address(0)) { if (relayTarget == permit2 || relayTarget == tokenManager) { revert TargetingInvalidContract(relayTarget); } if (address(this).balance < relayValue) { revert InsufficientRelayValue(address(this).balance, relayValue); } (bool success, bytes memory result) = relayTarget.call{value: relayValue}(relaydata); if (!success) _propagateError(relayTarget, relayValue, relaydata, result); emit RelayData(relayTarget, relayValue, relaydata); } } /** * @dev Parse the token transfer details from the order so it can be supplied to the Permit2 * transfer from request * @param _inputs Token addresses and amounts in a struct * @return transferDetails Transformed data */ function _getTransferDetails(Input[] calldata _inputs) private view returns (IPermit2.SignatureTransferDetails[] memory) { uint256 inputsLength = _inputs.length; IPermit2.SignatureTransferDetails[] memory transferDetails = new IPermit2.SignatureTransferDetails[](inputsLength); for (uint256 i; i < inputsLength;) { transferDetails[i] = IPermit2.SignatureTransferDetails({to: address(this), requestedAmount: _inputs[i].amount}); unchecked { ++i; } } return transferDetails; } /** * @notice Pause the contract from carrying out any more zaps * @dev Only owner can pause */ function pause() external onlyOwner { _pause(); } /** * @notice Unpause the contract to allow new zaps * @dev Only owner can unpause */ function unpause() external onlyOwner { _unpause(); } /** * @dev Allow receiving of native tokens */ receive() external payable {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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 v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/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 v4.9.0) (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 v4.9.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/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; /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ 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)); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value)); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ 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"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value)); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to * 0 before setting it to a non-zero value. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0)); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ 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"); require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation 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). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // 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 cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [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://consensys.net/diligence/blog/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/v0.8.0/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 0.8.19; import { IBeefyZapRouter } from "./IBeefyZapRouter.sol"; /** * @title Token manager interface * @author kexley, Beefy * @notice Interface for the token manager */ interface IBeefyTokenManager { /** * @notice Pull tokens from a user * @param _user Address of user to transfer tokens from * @param _inputs Addresses and amounts of tokens to transfer */ function pullTokens(address _user, IBeefyZapRouter.Input[] calldata _inputs) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; import { IPermit2 } from "./IPermit2.sol"; /** * @title Zap router interface * @author kexley, Beefy * @notice Interface for zap router that contains the structs for orders and routes */ interface IBeefyZapRouter { /** * @dev Input token and amount used in a step of the zap * @param token Address of token * @param amount Amount of token */ struct Input { address token; uint256 amount; } /** * @dev Output token and amount from the end of the zap * @param token Address of token * @param minOutputAmount Minimum amount of token received */ struct Output { address token; uint256 minOutputAmount; } /** * @dev External call at the end of zap * @param target Target address to be called * @param value Ether value of the call * @param data Payload to call target address with */ struct Relay { address target; uint256 value; bytes data; } /** * @dev Token relevant to the current step of the route * @param token Address of token * @param index Location in the data that the balance of the token should be inserted */ struct StepToken { address token; int32 index; } /** * @dev Step in a route * @param target Target address to be called * @param value Ether value to call the target address with * @param data Payload to call target address with * @param tokens Tokens relevant to the step that require approvals or their balances inserted * into the data */ struct Step { address target; uint256 value; bytes data; StepToken[] tokens; } /** * @dev Order created by the user * @param inputs Tokens and amounts to be pulled from the user * @param outputs Tokens and minimums to be sent to recipient * @param relay External call to make after zap is completed * @param user Source of input tokens * @param recipient Destination of output tokens */ struct Order { Input[] inputs; Output[] outputs; Relay relay; address user; address recipient; } /** * @notice Execute an order directly * @param _order Order created by the user * @param _route Route supplied by user */ function executeOrder(Order calldata _order, Step[] calldata _route) external payable; /** * @notice Execute an order on behalf of a user * @param _permit Token permits from Permit2 with the order as witness data signed by user * @param _order Order created by user that was signed in the permit * @param _signature Signature from user of combined permit and order * @param _route Route supplied by user or third-party */ function executeOrder( IPermit2.PermitBatchTransferFrom calldata _permit, Order calldata _order, bytes calldata _signature, Step[] calldata _route ) external; /** * @notice Pause the contract from carrying out any more zaps * @dev Only owner can pause */ function pause() external; /** * @notice Unpause the contract to allow new zaps * @dev Only owner can unpause */ function unpause() external; /** * @notice Permit2 immutable address */ function permit2() external view returns (address); /** * @notice Token manager immutable address */ function tokenManager() external view returns (address); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; /** * @title Permit2 interface * @author kexley, Beefy * @notice Interface for Permit2 */ interface IPermit2 { /** * @dev Token and amount in a permit message * @param token Address of token to transfer * @param amount Amount of token to transfer */ struct TokenPermissions { address token; uint256 amount; } /** * @dev Batched permit with the unique nonce and deadline * @param permitted Tokens and corresponding amounts permitted for a transfer * @param nonce Unique value for every token owner's signature to prevent signature replays * @param deadline Deadline on the permit signature */ struct PermitBatchTransferFrom { TokenPermissions[] permitted; uint256 nonce; uint256 deadline; } /** * @dev Transfer details for permitBatchTransferFrom * @param to Recipient of tokens * @param requestedAmount Amount to transfer */ struct SignatureTransferDetails { address to; uint256 requestedAmount; } /** * @notice Consume a permit2 message and transfer tokens * @param permit Batched permit * @param transferDetails Recipient and amount of tokens to transfer * @param owner Source of tokens * @param witness Verified order data that was witnessed in the permit2 signature * @param witnessTypeString Order function string used to create EIP-712 type string * @param signature Signature from user */ function permitWitnessTransferFrom( PermitBatchTransferFrom memory permit, SignatureTransferDetails[] calldata transferDetails, address owner, bytes32 witness, string calldata witnessTypeString, bytes calldata signature ) external; /** * @notice Domain separator to differentiate the chain a permit exists on */ function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { IBeefyZapRouter } from "../interfaces/IBeefyZapRouter.sol"; import { ZapErrors } from "./ZapErrors.sol"; /** * @title Token manager * @author kexley, Beefy * @notice Token manager handles the token approvals for the zap router * @dev Users should approve this contract instead of the zap router to handle the input ERC20 tokens */ contract BeefyTokenManager is ZapErrors { using SafeERC20 for IERC20; /** * @notice Zap router immutable address */ address public immutable zap; /** * @dev This contract is created in the constructor of the zap router */ constructor() { zap = msg.sender; } /** * @notice Pulls tokens from a user and transfers them directly to the zap router * @dev Only the token owner can call this function indirectly via the zap router * @param _user Address to pull tokens from * @param _inputs Token addresses and amounts to pull */ function pullTokens(address _user, IBeefyZapRouter.Input[] calldata _inputs) external { if (msg.sender != zap) revert CallerNotZap(msg.sender); uint256 inputLength = _inputs.length; for (uint256 i; i < inputLength;) { IBeefyZapRouter.Input calldata input = _inputs[i]; unchecked { ++i; } if (input.token == address(0)) continue; IERC20(input.token).safeTransferFrom(_user, msg.sender, input.amount); } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.19; /** * @title Zap errors * @author kexley, Beefy * @notice Custom errors for the zap router */ contract ZapErrors { error InvalidCaller(address owner, address caller); error TargetingInvalidContract(address target); error CallFailed(address target, uint256 value, bytes callData); error Slippage(address token, uint256 minAmountOut, uint256 balance); error EtherTransferFailed(address recipient); error CallerNotZap(address caller); error InsufficientRelayValue(uint256 balance, uint256 relayValue); }
// SPDX-License-Identifier: Unlicense /* * @title Solidity Bytes Arrays Utils * @author Gonçalo Sá <[email protected]> * * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity. * The library lets you concatenate, slice and type cast bytes arrays both in memory and storage. */ pragma solidity >=0.8.0 <0.9.0; library BytesLib { function concat( bytes memory _preBytes, bytes memory _postBytes ) internal pure returns (bytes memory) { bytes memory tempBytes; assembly { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // Store the length of the first bytes array at the beginning of // the memory for tempBytes. let length := mload(_preBytes) mstore(tempBytes, length) // Maintain a memory counter for the current write location in the // temp bytes array by adding the 32 bytes for the array length to // the starting location. let mc := add(tempBytes, 0x20) // Stop copying when the memory counter reaches the length of the // first bytes array. let end := add(mc, length) for { // Initialize a copy counter to the start of the _preBytes data, // 32 bytes into its memory. let cc := add(_preBytes, 0x20) } lt(mc, end) { // Increase both counters by 32 bytes each iteration. mc := add(mc, 0x20) cc := add(cc, 0x20) } { // Write the _preBytes data into the tempBytes memory 32 bytes // at a time. mstore(mc, mload(cc)) } // Add the length of _postBytes to the current length of tempBytes // and store it as the new length in the first 32 bytes of the // tempBytes memory. length := mload(_postBytes) mstore(tempBytes, add(length, mload(tempBytes))) // Move the memory counter back from a multiple of 0x20 to the // actual end of the _preBytes data. mc := end // Stop copying when the memory counter reaches the new combined // length of the arrays. end := add(mc, length) for { let cc := add(_postBytes, 0x20) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } // Update the free-memory pointer by padding our last write location // to 32 bytes: add 31 bytes to the end of tempBytes to move to the // next 32 byte block, then round down to the nearest multiple of // 32. If the sum of the length of the two arrays is zero then add // one before rounding down to leave a blank 32 bytes (the length block with 0). mstore(0x40, and( add(add(end, iszero(add(length, mload(_preBytes)))), 31), not(31) // Round down to the nearest 32 bytes. )) } return tempBytes; } function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal { assembly { // Read the first 32 bytes of _preBytes storage, which is the length // of the array. (We don't need to use the offset into the slot // because arrays use the entire slot.) let fslot := sload(_preBytes.slot) // Arrays of 31 bytes or less have an even value in their slot, // while longer arrays have an odd value. The actual length is // the slot divided by two for odd values, and the lowest order // byte divided by two for even values. // If the slot is even, bitwise and the slot with 255 and divide by // two to get the length. If the slot is odd, bitwise and the slot // with -1 and divide by two. let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) let newlength := add(slength, mlength) // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage switch add(lt(slength, 32), lt(newlength, 32)) case 2 { // Since the new array still fits in the slot, we just need to // update the contents of the slot. // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length sstore( _preBytes.slot, // all the modifications to the slot are inside this // next block add( // we can just add to the slot contents because the // bytes we want to change are the LSBs fslot, add( mul( div( // load the bytes from memory mload(add(_postBytes, 0x20)), // zero all bytes to the right exp(0x100, sub(32, mlength)) ), // and now shift left the number of bytes to // leave space for the length in the slot exp(0x100, sub(32, newlength)) ), // increase length by the double of the memory // bytes length mul(mlength, 2) ) ) ) } case 1 { // The stored value fits in the slot, but the combined value // will exceed it. // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // The contents of the _postBytes array start 32 bytes into // the structure. Our first read should obtain the `submod` // bytes that can fit into the unused space in the last word // of the stored array. To get this, we read 32 bytes starting // from `submod`, so the data we read overlaps with the array // contents by `submod` bytes. Masking the lowest-order // `submod` bytes allows us to add that value directly to the // stored value. let submod := sub(32, slength) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore( sc, add( and( fslot, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00 ), and(mload(mc), mask) ) ) for { mc := add(mc, 0x20) sc := add(sc, 1) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } default { // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) // Start copying to the last used word of the stored array. let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // Copy over the first `submod` bytes of the new data as in // case 1 above. let slengthmod := mod(slength, 32) let mlengthmod := mod(mlength, 32) let submod := sub(32, slengthmod) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore(sc, add(sload(sc), and(mload(mc), mask))) for { sc := add(sc, 1) mc := add(mc, 0x20) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } } } function slice( bytes memory _bytes, uint256 _start, uint256 _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) { require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) { require(_bytes.length >= _start + 1 , "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) { require(_bytes.length >= _start + 2, "toUint16_outOfBounds"); uint16 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x2), _start)) } return tempUint; } function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) { require(_bytes.length >= _start + 4, "toUint32_outOfBounds"); uint32 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x4), _start)) } return tempUint; } function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) { require(_bytes.length >= _start + 8, "toUint64_outOfBounds"); uint64 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x8), _start)) } return tempUint; } function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) { require(_bytes.length >= _start + 12, "toUint96_outOfBounds"); uint96 tempUint; assembly { tempUint := mload(add(add(_bytes, 0xc), _start)) } return tempUint; } function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) { require(_bytes.length >= _start + 16, "toUint128_outOfBounds"); uint128 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x10), _start)) } return tempUint; } function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) { require(_bytes.length >= _start + 32, "toUint256_outOfBounds"); uint256 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x20), _start)) } return tempUint; } function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) { require(_bytes.length >= _start + 32, "toBytes32_outOfBounds"); bytes32 tempBytes32; assembly { tempBytes32 := mload(add(add(_bytes, 0x20), _start)) } return tempBytes32; } function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) { bool success = true; assembly { let length := mload(_preBytes) // if lengths don't match the arrays are not equal switch eq(length, mload(_postBytes)) case 1 { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 let mc := add(_preBytes, 0x20) let end := add(mc, length) for { let cc := add(_postBytes, 0x20) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) } eq(add(lt(mc, end), cb), 2) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { // if any of these checks fails then arrays are not equal if iszero(eq(mload(mc), mload(cc))) { // unsuccess: success := 0 cb := 0 } } } default { // unsuccess: success := 0 } } return success; } function equalStorage( bytes storage _preBytes, bytes memory _postBytes ) internal view returns (bool) { bool success = true; assembly { // we know _preBytes_offset is 0 let fslot := sload(_preBytes.slot) // Decode the length of the stored array like in concatStorage(). let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) // if lengths don't match the arrays are not equal switch eq(slength, mlength) case 1 { // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage if iszero(iszero(slength)) { switch lt(slength, 32) case 1 { // blank the last byte which is the length fslot := mul(div(fslot, 0x100), 0x100) if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) { // unsuccess: success := 0 } } default { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := keccak256(0x0, 0x20) let mc := add(_postBytes, 0x20) let end := add(mc, mlength) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) for {} eq(add(lt(mc, end), cb), 2) { sc := add(sc, 1) mc := add(mc, 0x20) } { if iszero(eq(sload(sc), mload(mc))) { // unsuccess: success := 0 cb := 0 } } } } } default { // unsuccess: success := 0 } } return success; } }
{ "optimizer": { "enabled": true, "runs": 1000000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "remappings": [], "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_permit2","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"callData","type":"bytes"}],"name":"CallFailed","type":"error"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"CallerNotZap","type":"error"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"EtherTransferFailed","type":"error"},{"inputs":[{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"relayValue","type":"uint256"}],"name":"InsufficientRelayValue","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"caller","type":"address"}],"name":"InvalidCaller","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"minAmountOut","type":"uint256"},{"internalType":"uint256","name":"balance","type":"uint256"}],"name":"Slippage","type":"error"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"TargetingInvalidContract","type":"error"},{"anonymous":false,"inputs":[{"components":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct IBeefyZapRouter.Input[]","name":"inputs","type":"tuple[]"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"minOutputAmount","type":"uint256"}],"internalType":"struct IBeefyZapRouter.Output[]","name":"outputs","type":"tuple[]"},{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IBeefyZapRouter.Relay","name":"relay","type":"tuple"},{"internalType":"address","name":"user","type":"address"},{"internalType":"address","name":"recipient","type":"address"}],"indexed":true,"internalType":"struct IBeefyZapRouter.Order","name":"order","type":"tuple"},{"indexed":true,"internalType":"address","name":"caller","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"}],"name":"FulfilledOrder","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":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"RelayData","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"TokenReturned","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"components":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct IPermit2.TokenPermissions[]","name":"permitted","type":"tuple[]"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"internalType":"struct IPermit2.PermitBatchTransferFrom","name":"_permit","type":"tuple"},{"components":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct IBeefyZapRouter.Input[]","name":"inputs","type":"tuple[]"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"minOutputAmount","type":"uint256"}],"internalType":"struct IBeefyZapRouter.Output[]","name":"outputs","type":"tuple[]"},{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IBeefyZapRouter.Relay","name":"relay","type":"tuple"},{"internalType":"address","name":"user","type":"address"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IBeefyZapRouter.Order","name":"_order","type":"tuple"},{"internalType":"bytes","name":"_signature","type":"bytes"},{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"int32","name":"index","type":"int32"}],"internalType":"struct IBeefyZapRouter.StepToken[]","name":"tokens","type":"tuple[]"}],"internalType":"struct IBeefyZapRouter.Step[]","name":"_route","type":"tuple[]"}],"name":"executeOrder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct IBeefyZapRouter.Input[]","name":"inputs","type":"tuple[]"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"minOutputAmount","type":"uint256"}],"internalType":"struct IBeefyZapRouter.Output[]","name":"outputs","type":"tuple[]"},{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IBeefyZapRouter.Relay","name":"relay","type":"tuple"},{"internalType":"address","name":"user","type":"address"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IBeefyZapRouter.Order","name":"_order","type":"tuple"},{"components":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"int32","name":"index","type":"int32"}],"internalType":"struct IBeefyZapRouter.StepToken[]","name":"tokens","type":"tuple[]"}],"internalType":"struct IBeefyZapRouter.Step[]","name":"_route","type":"tuple[]"}],"name":"executeOrder","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"permit2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tokenManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","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)
000000000000000000000000fcf5986450e4a014ffe7ad4ae24921b589d039b5
-----Decoded View---------------
Arg [0] : _permit2 (address): 0xFcf5986450E4A014fFE7ad4Ae24921B589D039b5
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000fcf5986450e4a014ffe7ad4ae24921b589d039b5
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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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.