// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)pragmasolidity ^0.8.1;/**
* @dev Collection of functions related to the address type
*/libraryAddress{
/**
* @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.
* ====
*/functionisContract(address account) internalviewreturns (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].
*/functionsendValue(addresspayable 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._
*/functionfunctionCall(address target, bytesmemory data) internalreturns (bytesmemory) {
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._
*/functionfunctionCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
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._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value
) internalreturns (bytesmemory) {
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._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(address(this).balance>= value, "Address: insufficient balance for call");
(bool success, bytesmemory 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._
*/functionfunctionStaticCall(address target, bytesmemory data) internalviewreturns (bytesmemory) {
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._
*/functionfunctionStaticCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalviewreturns (bytesmemory) {
(bool success, bytesmemory 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._
*/functionfunctionDelegateCall(address target, bytesmemory data) internalreturns (bytesmemory) {
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._
*/functionfunctionDelegateCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
(bool success, bytesmemory 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._
*/functionverifyCallResultFromTarget(address target,
bool success,
bytesmemory returndata,
stringmemory errorMessage
) internalviewreturns (bytesmemory) {
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 contractrequire(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._
*/functionverifyCallResult(bool success,
bytesmemory returndata,
stringmemory errorMessage
) internalpurereturns (bytesmemory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function_revert(bytesmemory returndata, stringmemory errorMessage) privatepure{
// Look for revert reason and bubble it up if presentif (returndata.length>0) {
// The easiest way to bubble the revert reason is using memory via assembly/// @solidity memory-safe-assemblyassembly {
let returndata_size :=mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
Contract Source Code
File 2 of 14: Context.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)pragmasolidity ^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.
*/abstractcontractContext{
function_msgSender() internalviewvirtualreturns (address) {
returnmsg.sender;
}
function_msgData() internalviewvirtualreturns (bytescalldata) {
returnmsg.data;
}
}
Contract Source Code
File 3 of 14: IBentoBoxMinimal.sol
// SPDX-License-Identifier: UNLICENSEDpragmasolidity >=0.8.0;structRebase {
uint128 elastic;
uint128 base;
}
structStrategyData {
uint64 strategyStartDate;
uint64 targetPercentage;
uint128 balance; // the balance of the strategy that BentoBox thinks is in there
}
/// @notice A rebasing librarylibraryRebaseLibrary{
/// @notice Calculates the base value in relationship to `elastic` and `total`.functiontoBase(Rebase memory total, uint256 elastic) internalpurereturns (uint256 base) {
if (total.elastic ==0) {
base = elastic;
} else {
base = (elastic * total.base) / total.elastic;
}
}
/// @notice Calculates the elastic value in relationship to `base` and `total`.functiontoElastic(Rebase memory total, uint256 base) internalpurereturns (uint256 elastic) {
if (total.base ==0) {
elastic = base;
} else {
elastic = (base * total.elastic) / total.base;
}
}
}
/// @notice Minimal BentoBox vault interface./// @dev `token` is aliased as `address` from `IERC20` for simplicity.interfaceIBentoBoxMinimal{
/// @notice Balance per ERC-20 token per account in shares.functionbalanceOf(address, address) externalviewreturns (uint256);
/// @dev Helper function to represent an `amount` of `token` in shares./// @param token The ERC-20 token./// @param amount The `token` amount./// @param roundUp If the result `share` should be rounded up./// @return share The token amount represented in shares.functiontoShare(address token,
uint256 amount,
bool roundUp
) externalviewreturns (uint256 share);
/// @dev Helper function to represent shares back into the `token` amount./// @param token The ERC-20 token./// @param share The amount of shares./// @param roundUp If the result should be rounded up./// @return amount The share amount back into native representation.functiontoAmount(address token,
uint256 share,
bool roundUp
) externalviewreturns (uint256 amount);
/// @notice Registers this contract so that users can approve it for BentoBox.functionregisterProtocol() external;
/// @notice Deposit an amount of `token` represented in either `amount` or `share`./// @param token The ERC-20 token to deposit./// @param from which account to pull the tokens./// @param to which account to push the tokens./// @param amount Token amount in native representation to deposit./// @param share Token amount represented in shares to deposit. Takes precedence over `amount`./// @return amountOut The amount deposited./// @return shareOut The deposited amount represented in shares.functiondeposit(address token,
addressfrom,
address to,
uint256 amount,
uint256 share
) externalpayablereturns (uint256 amountOut, uint256 shareOut);
/// @notice Withdraws an amount of `token` from a user account./// @param token_ The ERC-20 token to withdraw./// @param from which user to pull the tokens./// @param to which user to push the tokens./// @param amount of tokens. Either one of `amount` or `share` needs to be supplied./// @param share Like above, but `share` takes precedence over `amount`.functionwithdraw(address token_,
addressfrom,
address to,
uint256 amount,
uint256 share
) externalreturns (uint256 amountOut, uint256 shareOut);
/// @notice Transfer shares from a user account to another one./// @param token The ERC-20 token to transfer./// @param from which user to pull the tokens./// @param to which user to push the tokens./// @param share The amount of `token` in shares.functiontransfer(address token,
addressfrom,
address to,
uint256 share
) external;
/// @dev Reads the Rebase `totals`from storage for a given tokenfunctiontotals(address token) externalviewreturns (Rebase memory total);
functionstrategyData(address token) externalviewreturns (StrategyData memory total);
/// @dev Approves users' BentoBox assets to a "master" contract.functionsetMasterContractApproval(address user,
address masterContract,
bool approved,
uint8 v,
bytes32 r,
bytes32 s
) external;
functionharvest(address token,
bool balance,
uint256 maxChangeAmount
) external;
}
Contract Source Code
File 4 of 14: IERC20.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)pragmasolidity ^0.8.0;/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/interfaceIERC20{
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/eventTransfer(addressindexedfrom, addressindexed 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.
*/eventApproval(addressindexed owner, addressindexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/functiontotalSupply() externalviewreturns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/functionbalanceOf(address account) externalviewreturns (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.
*/functiontransfer(address to, uint256 amount) externalreturns (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.
*/functionallowance(address owner, address spender) externalviewreturns (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.
*/functionapprove(address spender, uint256 amount) externalreturns (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.
*/functiontransferFrom(addressfrom,
address to,
uint256 amount
) externalreturns (bool);
}
Contract Source Code
File 5 of 14: IPool.sol
// SPDX-License-Identifier: GPL-3.0-or-laterpragmasolidity >=0.5.0;pragmaexperimentalABIEncoderV2;/// @notice Trident pool interface.interfaceIPool{
/// @notice Executes a swap from one token to another./// @dev The input tokens must've already been sent to the pool./// @param data ABI-encoded params that the pool requires./// @return finalAmountOut The amount of output tokens that were sent to the user.functionswap(bytescalldata data) externalreturns (uint256 finalAmountOut);
/// @notice Executes a swap from one token to another with a callback./// @dev This function allows borrowing the output tokens and sending the input tokens in the callback./// @param data ABI-encoded params that the pool requires./// @return finalAmountOut The amount of output tokens that were sent to the user.functionflashSwap(bytescalldata data) externalreturns (uint256 finalAmountOut);
/// @notice Mints liquidity tokens./// @param data ABI-encoded params that the pool requires./// @return liquidity The amount of liquidity tokens that were minted for the user.functionmint(bytescalldata data) externalreturns (uint256 liquidity);
/// @notice Burns liquidity tokens./// @dev The input LP tokens must've already been sent to the pool./// @param data ABI-encoded params that the pool requires./// @return withdrawnAmounts The amount of various output tokens that were sent to the user.functionburn(bytescalldata data) externalreturns (TokenAmount[] memory withdrawnAmounts);
/// @notice Burns liquidity tokens for a single output token./// @dev The input LP tokens must've already been sent to the pool./// @param data ABI-encoded params that the pool requires./// @return amountOut The amount of output tokens that were sent to the user.functionburnSingle(bytescalldata data) externalreturns (uint256 amountOut);
/// @return A unique identifier for the pool type.functionpoolIdentifier() externalpurereturns (bytes32);
/// @return An array of tokens supported by the pool.functiongetAssets() externalviewreturns (address[] memory);
/// @notice Simulates a trade and returns the expected output./// @dev The pool does not need to include a trade simulator directly in itself - it can use a library./// @param data ABI-encoded params that the pool requires./// @return finalAmountOut The amount of output tokens that will be sent to the user if the trade is executed.functiongetAmountOut(bytescalldata data) externalviewreturns (uint256 finalAmountOut);
/// @notice Simulates a trade and returns the expected output./// @dev The pool does not need to include a trade simulator directly in itself - it can use a library./// @param data ABI-encoded params that the pool requires./// @return finalAmountIn The amount of input tokens that are required from the user if the trade is executed.functiongetAmountIn(bytescalldata data) externalviewreturns (uint256 finalAmountIn);
/// @dev This event must be emitted on all swaps.eventSwap(addressindexed recipient, addressindexed tokenIn, addressindexed tokenOut, uint256 amountIn, uint256 amountOut);
/// @dev This struct frames output tokens for burns.structTokenAmount {
address token;
uint256 amount;
}
}
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)pragmasolidity ^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.
*/abstractcontractOwnableisContext{
addressprivate _owner;
eventOwnershipTransferred(addressindexed previousOwner, addressindexed 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.
*/modifieronlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/functionowner() publicviewvirtualreturns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/function_checkOwner() internalviewvirtual{
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.
*/functionrenounceOwnership() publicvirtualonlyOwner{
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/functiontransferOwnership(address newOwner) publicvirtualonlyOwner{
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) internalvirtual{
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
Contract Source Code
File 12 of 14: RouteProcessor3_2.sol
// SPDX-License-Identifier: UNLICENSEDpragmasolidity 0.8.10;import'../interfaces/IUniswapV2Pair.sol';
import'../interfaces/IUniswapV3Pool.sol';
import'../interfaces/ITridentCLPool.sol';
import'../interfaces/IBentoBoxMinimal.sol';
import'../interfaces/IPool.sol';
import'../interfaces/IWETH.sol';
import'./InputStream.sol';
import'@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import"@openzeppelin/contracts/access/Ownable.sol";
addressconstant NATIVE_ADDRESS =0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
addressconstant IMPOSSIBLE_POOL_ADDRESS =0x0000000000000000000000000000000000000001;
/// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK)uint160constant MIN_SQRT_RATIO =4295128739;
/// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK)uint160constant MAX_SQRT_RATIO =1461446703485210103287273052203988822378723970342;
/// @title A route processor for the Sushi Aggregator/// @author Ilya Lyalin/// version 3.2contractRouteProcessor3_2isOwnable{
usingSafeERC20forIERC20;
usingSafeERC20forIERC20Permit;
usingInputStreamforuint256;
eventRoute(addressindexedfrom,
address to,
addressindexed tokenIn,
addressindexed tokenOut,
uint amountIn,
uint amountOutMin,
uint amountOut
);
IBentoBoxMinimal publicimmutable bentoBox;
mapping (address=>bool) priviledgedUsers;
addressprivate lastCalledPool;
uint8private unlocked =1;
uint8private paused =1;
modifierlock() {
require(unlocked ==1, 'RouteProcessor is locked');
require(paused ==1, 'RouteProcessor is paused');
unlocked =2;
_;
unlocked =1;
}
modifieronlyOwnerOrPriviledgedUser() {
require(msg.sender== owner() || priviledgedUsers[msg.sender] ==true, "RP: caller is not the owner or a priviledged user");
_;
}
constructor(address _bentoBox, address[] memory priviledgedUserList) {
bentoBox = IBentoBoxMinimal(_bentoBox);
lastCalledPool = IMPOSSIBLE_POOL_ADDRESS;
for (uint i =0; i < priviledgedUserList.length; i++) {
priviledgedUsers[priviledgedUserList[i]] =true;
}
}
functionsetPriviledge(address user, bool priviledge) externalonlyOwner{
priviledgedUsers[user] = priviledge;
}
functionpause() externalonlyOwnerOrPriviledgedUser{
paused =2;
}
functionresume() externalonlyOwnerOrPriviledgedUser{
paused =1;
}
/// @notice For native unwrappingreceive() externalpayable{}
/// @notice Processes the route generated off-chain. Has a lock/// @param tokenIn Address of the input token/// @param amountIn Amount of the input token/// @param tokenOut Address of the output token/// @param amountOutMin Minimum amount of the output token/// @return amountOut Actual amount of the output tokenfunctionprocessRoute(address tokenIn,
uint256 amountIn,
address tokenOut,
uint256 amountOutMin,
address to,
bytesmemory route
) externalpayablelockreturns (uint256 amountOut) {
return processRouteInternal(tokenIn, amountIn, tokenOut, amountOutMin, to, route);
}
/// @notice Transfers some value to <transferValueTo> and then processes the route/// @param transferValueTo Address where the value should be transferred/// @param amountValueTransfer How much value to transfer/// @param tokenIn Address of the input token/// @param amountIn Amount of the input token/// @param tokenOut Address of the output token/// @param amountOutMin Minimum amount of the output token/// @return amountOut Actual amount of the output tokenfunctiontransferValueAndprocessRoute(addresspayable transferValueTo,
uint256 amountValueTransfer,
address tokenIn,
uint256 amountIn,
address tokenOut,
uint256 amountOutMin,
address to,
bytesmemory route
) externalpayablelockreturns (uint256 amountOut) {
(bool success, bytesmemory returnBytes) = transferValueTo.call{value: amountValueTransfer}('');
require(success, string(abi.encodePacked(returnBytes)));
return processRouteInternal(tokenIn, amountIn, tokenOut, amountOutMin, to, route);
}
/// @notice Processes the route generated off-chain/// @param tokenIn Address of the input token/// @param amountIn Amount of the input token/// @param tokenOut Address of the output token/// @param amountOutMin Minimum amount of the output token/// @return amountOut Actual amount of the output tokenfunctionprocessRouteInternal(address tokenIn,
uint256 amountIn,
address tokenOut,
uint256 amountOutMin,
address to,
bytesmemory route
) privatereturns (uint256 amountOut) {
uint256 balanceInInitial = tokenIn == NATIVE_ADDRESS ? address(this).balance : IERC20(tokenIn).balanceOf(msg.sender);
uint256 balanceOutInitial = tokenOut == NATIVE_ADDRESS ? address(to).balance : IERC20(tokenOut).balanceOf(to);
uint256 stream = InputStream.createStream(route);
while (stream.isNotEmpty()) {
uint8 commandCode = stream.readUint8();
if (commandCode ==1) processMyERC20(stream);
elseif (commandCode ==2) processUserERC20(stream, amountIn);
elseif (commandCode ==3) processNative(stream);
elseif (commandCode ==4) processOnePool(stream);
elseif (commandCode ==5) processInsideBento(stream);
elseif (commandCode ==6) applyPermit(tokenIn, stream);
elserevert('RouteProcessor: Unknown command code');
}
uint256 balanceInFinal = tokenIn == NATIVE_ADDRESS ? address(this).balance : IERC20(tokenIn).balanceOf(msg.sender);
require(balanceInFinal + amountIn >= balanceInInitial, 'RouteProcessor: Minimal imput balance violation');
uint256 balanceOutFinal = tokenOut == NATIVE_ADDRESS ? address(to).balance : IERC20(tokenOut).balanceOf(to);
require(balanceOutFinal >= balanceOutInitial + amountOutMin, 'RouteProcessor: Minimal ouput balance violation');
amountOut = balanceOutFinal - balanceOutInitial;
emit Route(msg.sender, to, tokenIn, tokenOut, amountIn, amountOutMin, amountOut);
}
functionapplyPermit(address tokenIn, uint256 stream) private{
//address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s)uint256 value = stream.readUint();
uint256 deadline = stream.readUint();
uint8 v = stream.readUint8();
bytes32 r = stream.readBytes32();
bytes32 s = stream.readBytes32();
IERC20Permit(tokenIn).safePermit(msg.sender, address(this), value, deadline, v, r, s);
}
/// @notice Processes native coin: call swap for all pools that swap from native coin/// @param stream Streamed process programfunctionprocessNative(uint256 stream) private{
uint256 amountTotal =address(this).balance;
distributeAndSwap(stream, address(this), NATIVE_ADDRESS, amountTotal);
}
/// @notice Processes ERC20 token from this contract balance:/// @notice Call swap for all pools that swap from this token/// @param stream Streamed process programfunctionprocessMyERC20(uint256 stream) private{
address token = stream.readAddress();
uint256 amountTotal = IERC20(token).balanceOf(address(this));
unchecked {
if (amountTotal >0) amountTotal -=1; // slot undrain protection
}
distributeAndSwap(stream, address(this), token, amountTotal);
}
/// @notice Processes ERC20 token from msg.sender balance:/// @notice Call swap for all pools that swap from this token/// @param stream Streamed process program/// @param amountTotal Amount of tokens to take from msg.senderfunctionprocessUserERC20(uint256 stream, uint256 amountTotal) private{
address token = stream.readAddress();
distributeAndSwap(stream, msg.sender, token, amountTotal);
}
/// @notice Distributes amountTotal to several pools according to their shares and calls swap for each pool/// @param stream Streamed process program/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountTotal Total amount of tokenIn for swaps functiondistributeAndSwap(uint256 stream, addressfrom, address tokenIn, uint256 amountTotal) private{
uint8 num = stream.readUint8();
unchecked {
for (uint256 i =0; i < num; ++i) {
uint16 share = stream.readUint16();
uint256 amount = (amountTotal * share) /65535;
amountTotal -= amount;
swap(stream, from, tokenIn, amount);
}
}
}
/// @notice Processes ERC20 token for cases when the token has only one output pool/// @notice In this case liquidity is already at pool balance. This is an optimization/// @notice Call swap for all pools that swap from this token/// @param stream Streamed process programfunctionprocessOnePool(uint256 stream) private{
address token = stream.readAddress();
swap(stream, address(this), token, 0);
}
/// @notice Processes Bento tokens /// @notice Call swap for all pools that swap from this token/// @param stream Streamed process programfunctionprocessInsideBento(uint256 stream) private{
address token = stream.readAddress();
uint8 num = stream.readUint8();
uint256 amountTotal = bentoBox.balanceOf(token, address(this));
unchecked {
if (amountTotal >0) amountTotal -=1; // slot undrain protectionfor (uint256 i =0; i < num; ++i) {
uint16 share = stream.readUint16();
uint256 amount = (amountTotal * share) /65535;
amountTotal -= amount;
swap(stream, address(this), token, amount);
}
}
}
/// @notice Makes swap/// @param stream Streamed process program/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountIn Amount of tokenIn to take for swapfunctionswap(uint256 stream, addressfrom, address tokenIn, uint256 amountIn) private{
uint8 poolType = stream.readUint8();
if (poolType ==0) swapUniV2(stream, from, tokenIn, amountIn);
elseif (poolType ==1) swapUniV3(stream, from, tokenIn, amountIn);
elseif (poolType ==2) wrapNative(stream, from, tokenIn, amountIn);
elseif (poolType ==3) bentoBridge(stream, from, tokenIn, amountIn);
elseif (poolType ==4) swapTrident(stream, from, tokenIn, amountIn);
elserevert('RouteProcessor: Unknown pool type');
}
/// @notice Wraps/unwraps native token/// @param stream [direction & fake, recipient, wrapToken?]/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountIn Amount of tokenIn to take for swapfunctionwrapNative(uint256 stream, addressfrom, address tokenIn, uint256 amountIn) private{
uint8 directionAndFake = stream.readUint8();
address to = stream.readAddress();
if (directionAndFake &1==1) { // wrap nativeaddress wrapToken = stream.readAddress();
if (directionAndFake &2==0) IWETH(wrapToken).deposit{value: amountIn}();
if (to !=address(this)) IERC20(wrapToken).safeTransfer(to, amountIn);
} else { // unwrap nativeif (directionAndFake &2==0) {
if (from!=address(this)) IERC20(tokenIn).safeTransferFrom(from, address(this), amountIn);
IWETH(tokenIn).withdraw(amountIn);
}
payable(to).transfer(address(this).balance);
}
}
/// @notice Bridge/unbridge tokens to/from Bento/// @param stream [direction, recipient]/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountIn Amount of tokenIn to take for swapfunctionbentoBridge(uint256 stream, addressfrom, address tokenIn, uint256 amountIn) private{
uint8 direction = stream.readUint8();
address to = stream.readAddress();
if (direction >0) { // outside to Bento// deposit to arbitrary recipient is possible only from address(bentoBox)if (amountIn !=0) {
if (from==address(this)) IERC20(tokenIn).safeTransfer(address(bentoBox), amountIn);
else IERC20(tokenIn).safeTransferFrom(from, address(bentoBox), amountIn);
} else {
// tokens already are at address(bentoBox)
amountIn = IERC20(tokenIn).balanceOf(address(bentoBox)) +
bentoBox.strategyData(tokenIn).balance-
bentoBox.totals(tokenIn).elastic;
}
bentoBox.deposit(tokenIn, address(bentoBox), to, amountIn, 0);
} else { // Bento to outsideif (amountIn >0) {
bentoBox.transfer(tokenIn, from, address(this), amountIn);
} else amountIn = bentoBox.balanceOf(tokenIn, address(this));
bentoBox.withdraw(tokenIn, address(this), to, 0, amountIn);
}
}
/// @notice UniswapV2 pool swap/// @param stream [pool, direction, recipient]/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountIn Amount of tokenIn to take for swapfunctionswapUniV2(uint256 stream, addressfrom, address tokenIn, uint256 amountIn) private{
address pool = stream.readAddress();
uint8 direction = stream.readUint8();
address to = stream.readAddress();
if (amountIn !=0) {
if (from==address(this)) IERC20(tokenIn).safeTransfer(pool, amountIn);
else IERC20(tokenIn).safeTransferFrom(from, pool, amountIn);
}
(uint256 r0, uint256 r1, ) = IUniswapV2Pair(pool).getReserves();
require(r0 >0&& r1 >0, 'Wrong pool reserves');
(uint256 reserveIn, uint256 reserveOut) = direction ==1 ? (r0, r1) : (r1, r0);
amountIn = IERC20(tokenIn).balanceOf(pool) - reserveIn; // tokens already were transferreduint256 amountInWithFee = amountIn *997;
uint256 amountOut = (amountInWithFee * reserveOut) / (reserveIn *1000+ amountInWithFee);
(uint256 amount0Out, uint256 amount1Out) = direction ==1 ? (uint256(0), amountOut) : (amountOut, uint256(0));
IUniswapV2Pair(pool).swap(amount0Out, amount1Out, to, newbytes(0));
}
/// @notice Trident pool swap/// @param stream [pool, swapData]/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountIn Amount of tokenIn to take for swapfunctionswapTrident(uint256 stream, addressfrom, address tokenIn, uint256 amountIn) private{
address pool = stream.readAddress();
bytesmemory swapData = stream.readBytes();
if (amountIn !=0) {
bentoBox.transfer(tokenIn, from, pool, amountIn);
}
IPool(pool).swap(swapData);
}
/// @notice UniswapV3 pool swap/// @param stream [pool, direction, recipient]/// @param from Where to take liquidity for swap/// @param tokenIn Input token/// @param amountIn Amount of tokenIn to take for swapfunctionswapUniV3(uint256 stream, addressfrom, address tokenIn, uint256 amountIn) private{
address pool = stream.readAddress();
bool zeroForOne = stream.readUint8() >0;
address recipient = stream.readAddress();
if (from!=address(this)) {
require(from==msg.sender, 'swapUniV3: unexpected from address');
IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), uint256(amountIn));
}
lastCalledPool = pool;
IUniswapV3Pool(pool).swap(
recipient,
zeroForOne,
int256(amountIn),
zeroForOne ? MIN_SQRT_RATIO +1 : MAX_SQRT_RATIO -1,
abi.encode(tokenIn)
);
require(lastCalledPool == IMPOSSIBLE_POOL_ADDRESS, 'RouteProcessor.swapUniV3: unexpected'); // Just to be sure
}
/// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap./// @dev In the implementation you must pay the pool tokens owed for the swap./// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory./// amount0Delta and amount1Delta can both be 0 if no tokens were swapped./// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by/// the end of the swap. If positive, the callback must send that amount of token0 to the pool./// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by/// the end of the swap. If positive, the callback must send that amount of token1 to the pool./// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap callfunctionuniswapV3SwapCallback(int256 amount0Delta,
int256 amount1Delta,
bytescalldata data
) external{
require(msg.sender== lastCalledPool, 'RouteProcessor.uniswapV3SwapCallback: call from unknown source');
lastCalledPool = IMPOSSIBLE_POOL_ADDRESS;
(address tokenIn) =abi.decode(data, (address));
int256 amount = amount0Delta >0 ? amount0Delta : amount1Delta;
require(amount >0, 'RouteProcessor.uniswapV3SwapCallback: not positive amount');
// Normally, RouteProcessor shouldn't have any liquidity on board// If some liquidity exists, it is sweept by the next user that makes swap through these tokens
IERC20(tokenIn).safeTransfer(msg.sender, uint256(amount));
}
}
Contract Source Code
File 13 of 14: SafeERC20.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)pragmasolidity ^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.
*/librarySafeERC20{
usingAddressforaddress;
functionsafeTransfer(
IERC20 token,
address to,
uint256 value
) internal{
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
functionsafeTransferFrom(
IERC20 token,
addressfrom,
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.
*/functionsafeApprove(
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));
}
functionsafeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal{
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
functionsafeDecreaseAllowance(
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));
}
}
functionsafePermit(
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, bytesmemory 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.bytesmemory returndata =address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length>0) {
// Return data is optionalrequire(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
Contract Source Code
File 14 of 14: draft-IERC20Permit.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)pragmasolidity ^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.
*/interfaceIERC20Permit{
/**
* @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].
*/functionpermit(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.
*/functionnonces(address owner) externalviewreturns (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-mixedcasefunctionDOMAIN_SEPARATOR() externalviewreturns (bytes32);
}