Contract 0x617dee16b86534a5d792a4d7a62fb491b544111e 9

Txn Hash Method
Block
From
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Value [Txn Fee]
0x3f1f602811f416142b6a3efdf2f64153bdd1a97bf2174f1ff916ecd8f1cdec46Swap233478982022-12-07 23:40:2843 secs ago0x569eefa84f40a91c90ecd8d619a20c66cfbbdbaa IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.013028513 26.5
0xbc2f70ac074ecfa90ccbcbdb3b723c138faf87ddf55966ba98cc6379577d0a87Swap233478702022-12-07 23:39:251 min ago0x569eefa84f40a91c90ecd8d619a20c66cfbbdbaa IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0152064685 26.5
0xcb51e27c33e1c1907631316f41117967156ac13d4799483df5a0e6118c4a6f84Swap233475212022-12-07 23:27:2113 mins ago0x84acb4278360ab4a09df2f963a14724f51098518 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.00610506 26
0x0b0a9081ee05eda2dd0a9ebec7f92b59fe9d809223dfe156b40abb231d5aca33Swap233473152022-12-07 23:20:0821 mins ago0x2dff26d86942ce30e8c1d1e8323172cec8910b7e IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0121207398 25.1
0xa2d729d40f1de1e624386f7b111d2a131b0e05306303a4a2fc54cc7543abc150Swap233470502022-12-07 23:11:0130 mins ago0x47ddb156a33a31b00da0f8cabb397227326e91f7 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.006323807066 26.825346
0x5580786b622939ae789fa346310f9b8552ed1630f60f4278f26ad5d58f7d53f5Swap233469352022-12-07 23:07:0734 mins ago0x569eefa84f40a91c90ecd8d619a20c66cfbbdbaa IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.016048983 26.5
0x0a75022a90a1bfaa50e68535ed129f1683a557c2f02d92b8fa751dfabf84c001Swap Simple Mode233467902022-12-07 23:02:0239 mins ago0x569eefa84f40a91c90ecd8d619a20c66cfbbdbaa IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.010521563401 26.8818
0xca3b23503dc1c4a5291f94b309971afa66d3d63f768c7a607ee64844cc5d2fbdSwap233464452022-12-07 22:50:0751 mins ago0xfb15c3af09fbf8a39a587c4ed137ee5737d7166b IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.030369424 26.5
0x930da6b5d6efcfc7bfa474a8a3c734418e43d375ac7a5ee60e8ef4b312f9dee7Swap233461752022-12-07 22:40:461 hr ago0x0ee9a67863112a4356987567e984537eb96f49f8 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0298232614 27.425
0x09977e6d2a150c3c0414f03d48bc162cae3f666b26e91f54387575b3a6fdbe51Swap233461292022-12-07 22:39:111 hr 2 mins ago0x84acb4278360ab4a09df2f963a14724f51098518 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e1 AVAX0.007894094 26
0xfa1bdf5a3e96fe3ab59d6a62a874e5c98d2b6f0e687031d349b8389a039229d9Swap Executor1In...233460942022-12-07 22:37:571 hr 3 mins ago0x84acb4278360ab4a09df2f963a14724f51098518 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0073437 26
0x7f854f48dd64d7272d1328bdf9e7807ba5e6c7fb4948f3521368a6c6440bf032Swap233460132022-12-07 22:35:121 hr 5 mins ago0x15d4bcc42e7785fa58a6904d2552e67e3c75965f IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.015959042 26.5
0x897f0249caecadbe98ae6e83c42de04abadc71105886dc06383c47c2c4f5a563Swap233459842022-12-07 22:34:061 hr 7 mins ago0x15d4bcc42e7785fa58a6904d2552e67e3c75965f IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.017431607596 26.665944009
0xba43f4be19c4f9fce6aecb0f3720a2e4354d0aa99583393e145109f7e66e0811Swap233458932022-12-07 22:31:021 hr 10 mins ago0x92ff5ebb3cb32ce771d9095d8efdb39765fb9108 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.008482067 26.5
0xf437f262d475e558ce785079171f01e90fdfb323c382e90efc49f38402d67fddSwap Simple Mode233458772022-12-07 22:30:301 hr 10 mins ago0x15d4bcc42e7785fa58a6904d2552e67e3c75965f IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.014300407 26.5
0xf93ff0825c0ff4decd8bdfce72ddf64e94492ad6219bd3cbce9deebd65ff8431Swap Simple Mode233456472022-12-07 22:22:421 hr 18 mins ago0x12007783d673723212dbe13f4f460070eab8e413 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.016453635 27.5
0xdaa442bf351eb51230a4fdc1d1456be091335640353e3abba21172916ef21ea5Swap233454172022-12-07 22:14:471 hr 26 mins ago0x95efd66ddbd071c98a63877d9e49b55ca08d0fc5 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.013761715 26.5
0x51d39dec8f442725b5a3dd2bc8cced0c8e76e53dc7aa2b3f4fdeacf88004d80cSwap Simple Mode233453932022-12-07 22:13:591 hr 27 mins ago0x3389c5d26499bf710d5ab80292ec598861d0ff03 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0102823445 26.5
0x51d23bb85160db8b59563222c32b942cad19e304424f23dc95f20d51b70e43cfSwap233451842022-12-07 22:06:471 hr 34 mins ago0x95efd66ddbd071c98a63877d9e49b55ca08d0fc5 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0168699795 26.5
0xda75c5ce315808b4d1729cb414ec1b427c8277befb8c444fe12f9194e23a00f3Swap Simple Mode233450452022-12-07 22:01:581 hr 39 mins ago0x95efd66ddbd071c98a63877d9e49b55ca08d0fc5 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.012497612 26.5
0x503ce3cec0f9299ae3cbb497558bd764d13c8ae2aaa3730fba7217fcf82b6dccSwap233449912022-12-07 22:00:101 hr 41 mins ago0xba6bf766823d7fec435c359afdb5e47ec96c10a9 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0174919875 26.5
0x3ea21d1fb7ce77bc480df4dc515a87ea8404f2b7c518de98cebbbe6d5071056cSwap233448862022-12-07 21:56:351 hr 44 mins ago0xba6bf766823d7fec435c359afdb5e47ec96c10a9 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.011904913 26.5
0xdfb0f17c9a7cb225a4bcaf18019e0890fb5e6bdd6eb34bb33a427d53988c21fcSwap Simple Mode233447252022-12-07 21:50:581 hr 50 mins ago0xe9af2e97d387f4c20b71492e774ace535b36949a IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0101175675 26.5
0x0607843002d88467d26bdb93abbd1eb53eeb901c707c0057f674629a372eae3fSwap233446902022-12-07 21:49:471 hr 51 mins ago0x0c464dbf5ea4e3100e171c1d37563000b43c7751 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.011214694 26.5
0xf5f8ade1223814e907f0eb0a0d340e359a6357f893b3fab328fba0afdde86e66Swap233446672022-12-07 21:49:011 hr 52 mins ago0x0c464dbf5ea4e3100e171c1d37563000b43c7751 IN  0x617dee16b86534a5d792a4d7a62fb491b544111e0 AVAX0.0107494335 26.5
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Latest 25 internal transaction
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0x09977e6d2a150c3c0414f03d48bc162cae3f666b26e91f54387575b3a6fdbe51233461292022-12-07 22:39:111 hr 2 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e71 AVAX
0xbcf058c366f2706eedd324919ce6fddd5014d4dfb28c55f1943993aae239c9ce233432912022-12-07 21:02:192 hrs 38 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e7209.5 AVAX
0x2e9aac2bcc6723bbe81669275e663707ca7e76d0ee2863b897725531198897b4233426532022-12-07 20:40:233 hrs ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.75 AVAX
0xac011fff67674fd90c84bf11e15b9f13d2283a2cbb7fec793dc2f5b99ce76915233422322022-12-07 20:25:573 hrs 15 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0xd41b24bba51fac0e4827b6f94c0d6ddeb183cd6414 AVAX
0x878a8351146696d3ada4051751938298a1592d6c4acd55d33480f5a24febab86233420432022-12-07 20:19:293 hrs 21 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e74.5 AVAX
0x4cc3828368eb28fe000b90ca0b318848758d1384bfa0cd69a4b38680742bbe36233395412022-12-07 18:54:414 hrs 46 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.495 AVAX
0xc732ca2eea64a6970bcef535efdc53496dc7f60a421848a8f1e37145e3a094cb233391292022-12-07 18:40:345 hrs ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e71.514080934589629598 AVAX
0x3ca39430afd6154ee34598eac20af89455a2f0d740e5bf7fb962f183434c2331233391142022-12-07 18:40:055 hrs 1 min ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e740.613825661585100436 AVAX
0x39d30093b800634fef279c909b0fda061ec7d629ca68487b314cb4ac28de73a7233368472022-12-07 17:22:236 hrs 18 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e74 AVAX
0x784f70cf1929798f19ce1b272b7dbdc86379bdcf36f8ba0559c3578426c15d77233363242022-12-07 17:04:566 hrs 36 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.54 AVAX
0x133af426c163dae271a611ca1804ffb27082f7c6673ba3a6f53a1b8c04ca8c14233352742022-12-07 16:29:337 hrs 11 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.6 AVAX
0xf68715525fa2d58d189a3f54a725c9a5c4b353e202ea0bbf8961d8d901f164ca233349182022-12-07 16:17:367 hrs 23 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.66033106937318778 AVAX
0x506d6bbaceab8c50e3b69f7e7ab407255ae0c41a848a65f9c16e50066f32b782233344842022-12-07 16:02:587 hrs 38 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0xd41b24bba51fac0e4827b6f94c0d6ddeb183cd6482 AVAX
0xa87eba412b19b5d6ba2d2f0a31e79141dee795eabe0ca0249e38a6344d368e61233338152022-12-07 15:40:358 hrs ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e762 AVAX
0x7e3c95742cded4efd222e5f4f93396e670854ffc98ae4766770e3b05da5ffa58233317742022-12-07 14:31:259 hrs 9 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e772.657630244501780544 AVAX
0x80e2685ebb97fbf9901404d1609a98ecfe6943bc7c3fe700dfbc20821c6281c0233316652022-12-07 14:27:459 hrs 13 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e71,000 AVAX
0xe622d707c4cb925262aea27fc400468f7777bbe44315464e16593c3a7c122e07233316292022-12-07 14:26:389 hrs 14 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e71,000 AVAX
0xa1276f8105c4252a3063187773993b8e131522d0883bb54ec98e783d6b09a8ef233314612022-12-07 14:20:599 hrs 20 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e737 AVAX
0xbd3d3079f7a76a29c20fa0a7f2c0e2a72da826c6279c6c04aee28e4cb925a42d233297982022-12-07 13:24:4710 hrs 16 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.9 AVAX
0x63d167e8c4285dc9f2d2e90787ad4164fab7173bcbe40c165a819106554e6055233292962022-12-07 13:07:4410 hrs 33 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e71 AVAX
0x8cebf777aa2ae820141d7384a4dd5ce64870539eaa8db95295d8b986d2a7de68233286912022-12-07 12:46:5910 hrs 54 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e711 AVAX
0xe34c3b45f035a4c64953b1c39507c07d03f78e0bfd88721dfc5ec57ea9a1cadf233285272022-12-07 12:41:2110 hrs 59 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e7112 AVAX
0xcbd4198b4715225c91db8f41e390ced5415aa816244f72b72ac295046888fb7b233278422022-12-07 12:18:1811 hrs 22 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0x92cbfc3f9466e9d0a65ed63af277d1eed69558e70.5982 AVAX
0xcbd4198b4715225c91db8f41e390ced5415aa816244f72b72ac295046888fb7b233278422022-12-07 12:18:1811 hrs 22 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e0x96c195f6643a3d797cb90cb6ba0ae2776d51b5f30.0018 AVAX
0xba5cf440f9ceb606644400cf320e5e4ef8407c9a435ea4fd3f03df4b7f51ce2b233264552022-12-07 11:31:1412 hrs 9 mins ago 0x617dee16b86534a5d792a4d7a62fb491b544111e 0xd41b24bba51fac0e4827b6f94c0d6ddeb183cd64550 AVAX
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Contract Source Code Verified (Exact Match)

Contract Name:
MetaAggregationRouter

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 9999 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 13 : MetaAggregationRouter.sol
// SPDX-License-Identifier: MIT

/// Copyright (c) 2019-2021 1inch
/// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
/// and associated documentation files (the "Software"), to deal in the Software without restriction,
/// including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
/// and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
/// subject to the following conditions:
/// The above copyright notice and this permission notice shall be included in all copies or
/// substantial portions of the Software.
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
/// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
/// AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
/// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
/// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE

pragma solidity 0.8.9;

import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/utils/Context.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

import './dependency/Permitable.sol';
import './interfaces/IAggregationExecutor.sol';
import './interfaces/IAggregationExecutor1Inch.sol';
import './libraries/TransferHelper.sol';
import './libraries/RevertReasonParser.sol';

contract MetaAggregationRouter is Permitable, Ownable {
  using SafeERC20 for IERC20;

  address public immutable WETH;
  address private constant ETH_ADDRESS = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);

  uint256 private constant _PARTIAL_FILL = 0x01;
  uint256 private constant _REQUIRES_EXTRA_ETH = 0x02;
  uint256 private constant _SHOULD_CLAIM = 0x04;
  uint256 private constant _BURN_FROM_MSG_SENDER = 0x08;
  uint256 private constant _BURN_FROM_TX_ORIGIN = 0x10;
  uint256 private constant _SIMPLE_SWAP = 0x20;

  mapping(address => bool) public isWhitelist;

  struct SwapDescription {
    IERC20 srcToken;
    IERC20 dstToken;
    address[] srcReceivers;
    uint256[] srcAmounts;
    address dstReceiver;
    uint256 amount;
    uint256 minReturnAmount;
    uint256 flags;
    bytes permit;
  }

  struct SimpleSwapData {
    address[] firstPools;
    uint256[] firstSwapAmounts;
    bytes[] swapDatas;
    uint256 deadline;
    bytes destTokenFeeData;
  }

  event Swapped(
    address sender,
    IERC20 srcToken,
    IERC20 dstToken,
    address dstReceiver,
    uint256 spentAmount,
    uint256 returnAmount
  );

  event ClientData(bytes clientData);

  event Exchange(address pair, uint256 amountOut, address output);

  constructor(address _WETH) {
    WETH = _WETH;
  }

  receive() external payable {
    assert(msg.sender == WETH);
    // only accept ETH via fallback from the WETH contract
  }

  function rescueFunds(address token, uint256 amount) external onlyOwner {
    if (_isETH(IERC20(token))) {
      TransferHelper.safeTransferETH(msg.sender, amount);
    } else {
      TransferHelper.safeTransfer(token, msg.sender, amount);
    }
  }

  function updateWhitelist(address addr, bool value) external onlyOwner {
    isWhitelist[addr] = value;
  }

  function swapRouter1Inch(
    address router1Inch,
    bytes calldata router1InchData,
    SwapDescription calldata desc,
    bytes calldata clientData
  ) external payable returns (uint256 returnAmount, uint256 gasUsed) {
    uint256 gasBefore = gasleft();
    require(isWhitelist[router1Inch], 'not whitelist router');
    require(desc.minReturnAmount > 0, 'Min return should not be 0');
    require(
      desc.srcReceivers.length == desc.srcAmounts.length && desc.srcAmounts.length <= 1,
      'Invalid lengths for receiving src tokens'
    );

    uint256 val = msg.value;
    if (!_isETH(desc.srcToken)) {
      // transfer token to kyber router
      _permit(desc.srcToken, desc.amount, desc.permit);
      TransferHelper.safeTransferFrom(address(desc.srcToken), msg.sender, address(this), desc.amount);

      // approve token to 1inch router
      uint256 amount = _getBalance(desc.srcToken, address(this));
      desc.srcToken.safeIncreaseAllowance(router1Inch, amount);

      // transfer fee to feeTaker
      for (uint256 i = 0; i < desc.srcReceivers.length; i++) {
        TransferHelper.safeTransferFrom(address(desc.srcToken), msg.sender, desc.srcReceivers[i], desc.srcAmounts[i]);
      }
    } else {
      for (uint256 i = 0; i < desc.srcReceivers.length; i++) {
        val -= desc.srcAmounts[i];
        TransferHelper.safeTransferETH(desc.srcReceivers[i], desc.srcAmounts[i]);
      }
    }

    address dstReceiver = (desc.dstReceiver == address(0)) ? msg.sender : desc.dstReceiver;
    uint256 initialSrcBalance = (desc.flags & _PARTIAL_FILL != 0) ? _getBalance(desc.srcToken, msg.sender) : 0;
    uint256 initialDstBalance = _getBalance(desc.dstToken, dstReceiver);
    {
      // call to 1inch router contract
      (bool success, ) = router1Inch.call{value: val}(router1InchData);
      require(success, 'call to 1inch router fail');
    }

    // 1inch router return to msg.sender (mean fund will return to this address)
    uint256 stuckAmount = _getBalance(desc.dstToken, address(this));
    _doTransferERC20(desc.dstToken, dstReceiver, stuckAmount);

    // safe check here
    returnAmount = _getBalance(desc.dstToken, dstReceiver) - initialDstBalance;
    uint256 spentAmount = desc.amount;
    if (desc.flags & _PARTIAL_FILL != 0) {
      spentAmount = initialSrcBalance + desc.amount - _getBalance(desc.srcToken, msg.sender);
      require(returnAmount * desc.amount >= desc.minReturnAmount * spentAmount, 'Return amount is not enough');
    } else {
      require(returnAmount >= desc.minReturnAmount, 'Return amount is not enough');
    }

    emit Swapped(msg.sender, desc.srcToken, desc.dstToken, dstReceiver, spentAmount, returnAmount);
    emit Exchange(router1Inch, returnAmount, _isETH(desc.dstToken) ? WETH : address(desc.dstToken));
    emit ClientData(clientData);
    unchecked {
      gasUsed = gasBefore - gasleft();
    }
  }

  function swapExecutor1Inch(
    IAggregationExecutor1Inch caller,
    SwapDescriptionExecutor1Inch calldata desc,
    bytes calldata executor1InchData,
    bytes calldata clientData
  ) external payable returns (uint256 returnAmount, uint256 gasUsed) {
    uint256 gasBefore = gasleft();
    require(desc.minReturnAmount > 0, 'Min return should not be 0');
    require(executor1InchData.length > 0, 'data should not be empty');
    require(desc.srcReceivers.length == desc.srcAmounts.length, 'invalid src receivers length');

    bool srcETH = _isETH(desc.srcToken);
    if (desc.flags & _REQUIRES_EXTRA_ETH != 0) {
      require(msg.value > (srcETH ? desc.amount : 0), 'Invalid msg.value');
    } else {
      require(msg.value == (srcETH ? desc.amount : 0), 'Invalid msg.value');
    }
    uint256 val = msg.value;
    if (!srcETH) {
      _permit(desc.srcToken, desc.amount, desc.permit);

      // transfer to fee taker
      uint256 srcReceiversLength = desc.srcReceivers.length;
      for (uint256 i = 0; i < srcReceiversLength; ) {
        TransferHelper.safeTransferFrom(address(desc.srcToken), msg.sender, desc.srcReceivers[i], desc.srcAmounts[i]);
        unchecked {
          ++i;
        }
      }

      // transfer to 1inch srcReceiver
      TransferHelper.safeTransferFrom(address(desc.srcToken), msg.sender, desc.srcReceiver1Inch, desc.amount);
    } else {
      // transfer to 1inch srcReceiver
      uint256 srcReceiversLength = desc.srcReceivers.length;
      for (uint256 i = 0; i < srcReceiversLength; ) {
        val -= desc.srcAmounts[i];
        TransferHelper.safeTransferETH(desc.srcReceivers[i], desc.srcAmounts[i]);
        unchecked {
          ++i;
        }
      }
    }

    {
      bytes memory callData = abi.encodePacked(caller.callBytes.selector, bytes12(0), msg.sender, executor1InchData);
      // solhint-disable-next-line avoid-low-level-calls
      (bool success, bytes memory result) = address(caller).call{value: val}(callData);
      if (!success) {
        revert(RevertReasonParser.parse(result, 'callBytes failed: '));
      }
    }

    uint256 spentAmount = desc.amount;
    returnAmount = _getBalance(desc.dstToken, address(this));

    if (desc.flags & _PARTIAL_FILL != 0) {
      uint256 unspentAmount = _getBalance(desc.srcToken, address(this));
      if (unspentAmount > 0) {
        spentAmount = spentAmount - unspentAmount;
        _doTransferERC20(desc.srcToken, msg.sender, unspentAmount);
      }

      require(returnAmount * desc.amount >= desc.minReturnAmount * spentAmount, 'Return amount is not enough');
    } else {
      require(returnAmount >= desc.minReturnAmount, 'Return amount is not enough');
    }

    address dstReceiver = (desc.dstReceiver == address(0)) ? msg.sender : desc.dstReceiver;
    _doTransferERC20(desc.dstToken, dstReceiver, returnAmount);

    emit Swapped(msg.sender, desc.srcToken, desc.dstToken, dstReceiver, spentAmount, returnAmount);
    emit Exchange(address(caller), returnAmount, _isETH(desc.dstToken) ? WETH : address(desc.dstToken));
    emit ClientData(clientData);
    unchecked {
      gasUsed = gasBefore - gasleft();
    }
  }

  function swap(
    IAggregationExecutor caller,
    SwapDescription calldata desc,
    bytes calldata executorData,
    bytes calldata clientData
  ) external payable returns (uint256 returnAmount, uint256 gasUsed) {
    uint256 gasBefore = gasleft();
    require(desc.minReturnAmount > 0, 'Min return should not be 0');
    require(executorData.length > 0, 'executorData should be not zero');

    uint256 flags = desc.flags;

    // simple mode swap
    if (flags & _SIMPLE_SWAP != 0) return swapSimpleMode(caller, desc, executorData, clientData);

    {
      IERC20 srcToken = desc.srcToken;
      if (flags & _REQUIRES_EXTRA_ETH != 0) {
        require(msg.value > (_isETH(srcToken) ? desc.amount : 0), 'Invalid msg.value');
      } else {
        require(msg.value == (_isETH(srcToken) ? desc.amount : 0), 'Invalid msg.value');
      }

      require(desc.srcReceivers.length == desc.srcAmounts.length, 'Invalid lengths for receiving src tokens');

      if (flags & _SHOULD_CLAIM != 0) {
        require(!_isETH(srcToken), 'Claim token is ETH');
        _permit(srcToken, desc.amount, desc.permit);
        for (uint256 i = 0; i < desc.srcReceivers.length; i++) {
          TransferHelper.safeTransferFrom(address(srcToken), msg.sender, desc.srcReceivers[i], desc.srcAmounts[i]);
        }
      }

      if (_isETH(srcToken)) {
        // normally in case taking fee in srcToken and srcToken is the native token
        for (uint256 i = 0; i < desc.srcReceivers.length; i++) {
          TransferHelper.safeTransferETH(desc.srcReceivers[i], desc.srcAmounts[i]);
        }
      }
    }

    {
      address dstReceiver = (desc.dstReceiver == address(0)) ? msg.sender : desc.dstReceiver;
      uint256 initialSrcBalance = (flags & _PARTIAL_FILL != 0) ? _getBalance(desc.srcToken, msg.sender) : 0;
      IERC20 dstToken = desc.dstToken;
      uint256 initialDstBalance = _getBalance(dstToken, dstReceiver);

      _callWithEth(caller, executorData);

      uint256 spentAmount = desc.amount;
      returnAmount = _getBalance(dstToken, dstReceiver) - initialDstBalance;

      if (flags & _PARTIAL_FILL != 0) {
        spentAmount = initialSrcBalance + desc.amount - _getBalance(desc.srcToken, msg.sender);
        require(returnAmount * desc.amount >= desc.minReturnAmount * spentAmount, 'Return amount is not enough');
      } else {
        require(returnAmount >= desc.minReturnAmount, 'Return amount is not enough');
      }

      emit Swapped(msg.sender, desc.srcToken, dstToken, dstReceiver, spentAmount, returnAmount);
      emit Exchange(address(caller), returnAmount, _isETH(dstToken) ? WETH : address(dstToken));
      emit ClientData(clientData);
    }

    unchecked {
      gasUsed = gasBefore - gasleft();
    }
  }

  function swapSimpleMode(
    IAggregationExecutor caller,
    SwapDescription calldata desc,
    bytes calldata executorData,
    bytes calldata clientData
  ) public returns (uint256 returnAmount, uint256 gasUsed) {
    uint256 gasBefore = gasleft();

    require(!_isETH(desc.srcToken), 'src is eth, should use normal swap');
    _permit(desc.srcToken, desc.amount, desc.permit);

    uint256 totalSwapAmount = desc.amount;
    if (desc.srcReceivers.length > 0) {
      // take fee in tokenIn
      require(
        desc.srcReceivers.length == 1 && desc.srcReceivers.length == desc.srcAmounts.length,
        'Wrong number of src receivers'
      );
      TransferHelper.safeTransferFrom(address(desc.srcToken), msg.sender, desc.srcReceivers[0], desc.srcAmounts[0]);
      require(desc.srcAmounts[0] <= totalSwapAmount, 'invalid fee amount in src token');
      totalSwapAmount -= desc.srcAmounts[0];
    }
    address dstReceiver = (desc.dstReceiver == address(0)) ? msg.sender : desc.dstReceiver;
    uint256 initialDstBalance = _getBalance(desc.dstToken, dstReceiver);

    _swapMultiSequencesWithSimpleMode(
      caller,
      address(desc.srcToken),
      totalSwapAmount,
      address(desc.dstToken),
      dstReceiver,
      executorData
    );

    returnAmount = _getBalance(desc.dstToken, dstReceiver) - initialDstBalance;

    require(returnAmount >= desc.minReturnAmount, 'Return amount is not enough');
    emit Swapped(msg.sender, desc.srcToken, desc.dstToken, dstReceiver, desc.amount, returnAmount);
    emit Exchange(address(caller), returnAmount, _isETH(desc.dstToken) ? WETH : address(desc.dstToken));
    emit ClientData(clientData);

    unchecked {
      gasUsed = gasBefore - gasleft();
    }
  }

  function _doTransferERC20(
    IERC20 token,
    address to,
    uint256 amount
  ) internal {
    if (amount > 0) {
      if (_isETH(token)) {
        TransferHelper.safeTransferETH(to, amount);
      } else {
        TransferHelper.safeTransfer(address(token), to, amount);
      }
    }
  }

  // Only use this mode if the first pool of each sequence can receive tokenIn directly into the pool
  function _swapMultiSequencesWithSimpleMode(
    IAggregationExecutor caller,
    address tokenIn,
    uint256 totalSwapAmount,
    address tokenOut,
    address dstReceiver,
    bytes calldata data
  ) internal {
    SimpleSwapData memory swapData = abi.decode(data, (SimpleSwapData));
    require(swapData.deadline >= block.timestamp, 'ROUTER: Expired');
    require(
      swapData.firstPools.length == swapData.firstSwapAmounts.length &&
        swapData.firstPools.length == swapData.swapDatas.length,
      'invalid swap data length'
    );
    uint256 numberSeq = swapData.firstPools.length;
    for (uint256 i = 0; i < numberSeq; i++) {
      // collect amount to the first pool
      TransferHelper.safeTransferFrom(tokenIn, msg.sender, swapData.firstPools[i], swapData.firstSwapAmounts[i]);
      require(swapData.firstSwapAmounts[i] <= totalSwapAmount, 'invalid swap amount');
      totalSwapAmount -= swapData.firstSwapAmounts[i];
      {
        // solhint-disable-next-line avoid-low-level-calls
        // may take some native tokens for commission fee
        (bool success, bytes memory result) = address(caller).call(
          abi.encodeWithSelector(caller.swapSingleSequence.selector, swapData.swapDatas[i])
        );
        if (!success) {
          revert(RevertReasonParser.parse(result, 'swapSingleSequence failed: '));
        }
      }
    }
    {
      // solhint-disable-next-line avoid-low-level-calls
      // may take some native tokens for commission fee
      (bool success, bytes memory result) = address(caller).call(
        abi.encodeWithSelector(
          caller.finalTransactionProcessing.selector,
          tokenIn,
          tokenOut,
          dstReceiver,
          swapData.destTokenFeeData
        )
      );
      if (!success) {
        revert(RevertReasonParser.parse(result, 'finalTransactionProcessing failed: '));
      }
    }
  }

  function _getBalance(IERC20 token, address account) internal view returns (uint256) {
    if (_isETH(token)) {
      return account.balance;
    } else {
      return token.balanceOf(account);
    }
  }

  function _isETH(IERC20 token) internal pure returns (bool) {
    return (address(token) == ETH_ADDRESS);
  }

  function _callWithEth(IAggregationExecutor caller, bytes calldata executorData) internal {
    // solhint-disable-next-line avoid-low-level-calls
    // may take some native tokens for commission fee
    uint256 ethAmount = _getBalance(IERC20(ETH_ADDRESS), address(this));
    if (ethAmount > msg.value) ethAmount = msg.value;
    (bool success, bytes memory result) = address(caller).call{value: ethAmount}(
      abi.encodeWithSelector(caller.callBytes.selector, executorData)
    );
    if (!success) {
      revert(RevertReasonParser.parse(result, 'callBytes failed: '));
    }
  }
}

File 2 of 13 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

File 3 of 13 : Context.sol
// 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;
    }
}

File 4 of 13 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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 Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 5 of 13 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 6 of 13 : Permitable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol';

import '../libraries/RevertReasonParser.sol';

/*
“Copyright (c) 2019-2021 1inch 
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions: 
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software. 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE”.
*/

contract Permitable {
  event Error(string reason);

  function _permit(
    IERC20 token,
    uint256 amount,
    bytes calldata permit
  ) internal {
    if (permit.length == 32 * 7) {
      // solhint-disable-next-line avoid-low-level-calls
      (bool success, bytes memory result) = address(token).call(
        abi.encodePacked(IERC20Permit.permit.selector, permit)
      );
      if (!success) {
        string memory reason = RevertReasonParser.parse(result, 'Permit call failed: ');
        if (token.allowance(msg.sender, address(this)) < amount) {
          revert(reason);
        } else {
          emit Error(reason);
        }
      }
    }
  }
}

File 7 of 13 : IAggregationExecutor.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.12;

interface IAggregationExecutor {
  function callBytes(bytes calldata data) external payable; // 0xd9c45357

  // callbytes per swap sequence
  function swapSingleSequence(bytes calldata data) external;

  function finalTransactionProcessing(
    address tokenIn,
    address tokenOut,
    address to,
    bytes calldata destTokenFeeData
  ) external;
}

File 8 of 13 : IAggregationExecutor1Inch.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import '@openzeppelin/contracts/interfaces/IERC20.sol';

interface IAggregationExecutor1Inch {
  function callBytes(address msgSender, bytes calldata data) external payable; // 0x2636f7f8
}

interface IAggregationRouter1InchV4 {
  function swap(
    IAggregationExecutor1Inch caller,
    SwapDescription1Inch calldata desc,
    bytes calldata data
  ) external payable returns (uint256 returnAmount, uint256 gasLeft);
}

struct SwapDescription1Inch {
  IERC20 srcToken;
  IERC20 dstToken;
  address payable srcReceiver;
  address payable dstReceiver;
  uint256 amount;
  uint256 minReturnAmount;
  uint256 flags;
  bytes permit;
}

struct SwapDescriptionExecutor1Inch {
  IERC20 srcToken;
  IERC20 dstToken;
  address payable srcReceiver1Inch;
  address payable dstReceiver;
  address[] srcReceivers;
  uint256[] srcAmounts;
  uint256 amount;
  uint256 minReturnAmount;
  uint256 flags;
  bytes permit;
}

File 9 of 13 : TransferHelper.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.5.16;

// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
  function safeApprove(
    address token,
    address to,
    uint256 value
  ) internal {
    // bytes4(keccak256(bytes('approve(address,uint256)')));
    (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
    require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: APPROVE_FAILED');
  }

  function safeTransfer(
    address token,
    address to,
    uint256 value
  ) internal {
    // bytes4(keccak256(bytes('transfer(address,uint256)')));
    if (value == 0) return;
    (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
    require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FAILED');
  }

  function safeTransferFrom(
    address token,
    address from,
    address to,
    uint256 value
  ) internal {
    // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
    if (value == 0) return;
    (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
    require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FROM_FAILED');
  }

  function safeTransferETH(address to, uint256 value) internal {
    if (value == 0) return;
    (bool success, ) = to.call{value: value}(new bytes(0));
    require(success, 'TransferHelper: ETH_TRANSFER_FAILED');
  }
}

File 10 of 13 : RevertReasonParser.sol
// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.7.6;

/*
“Copyright (c) 2019-2021 1inch 
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions: 
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software. 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE”.
*/

library RevertReasonParser {
  function parse(bytes memory data, string memory prefix) internal pure returns (string memory) {
    // https://solidity.readthedocs.io/en/latest/control-structures.html#revert
    // We assume that revert reason is abi-encoded as Error(string)

    // 68 = 4-byte selector 0x08c379a0 + 32 bytes offset + 32 bytes length
    if (data.length >= 68 && data[0] == '\x08' && data[1] == '\xc3' && data[2] == '\x79' && data[3] == '\xa0') {
      string memory reason;
      // solhint-disable no-inline-assembly
      assembly {
        // 68 = 32 bytes data length + 4-byte selector + 32 bytes offset
        reason := add(data, 68)
      }
      /*
                revert reason is padded up to 32 bytes with ABI encoder: Error(string)
                also sometimes there is extra 32 bytes of zeros padded in the end:
                https://github.com/ethereum/solidity/issues/10170
                because of that we can't check for equality and instead check
                that string length + extra 68 bytes is less than overall data length
            */
      require(data.length >= 68 + bytes(reason).length, 'Invalid revert reason');
      return string(abi.encodePacked(prefix, 'Error(', reason, ')'));
    }
    // 36 = 4-byte selector 0x4e487b71 + 32 bytes integer
    else if (data.length == 36 && data[0] == '\x4e' && data[1] == '\x48' && data[2] == '\x7b' && data[3] == '\x71') {
      uint256 code;
      // solhint-disable no-inline-assembly
      assembly {
        // 36 = 32 bytes data length + 4-byte selector
        code := mload(add(data, 36))
      }
      return string(abi.encodePacked(prefix, 'Panic(', _toHex(code), ')'));
    }

    return string(abi.encodePacked(prefix, 'Unknown(', _toHex(data), ')'));
  }

  function _toHex(uint256 value) private pure returns (string memory) {
    return _toHex(abi.encodePacked(value));
  }

  function _toHex(bytes memory data) private pure returns (string memory) {
    bytes16 alphabet = 0x30313233343536373839616263646566;
    bytes memory str = new bytes(2 + data.length * 2);
    str[0] = '0';
    str[1] = 'x';
    for (uint256 i = 0; i < data.length; i++) {
      str[2 * i + 2] = alphabet[uint8(data[i] >> 4)];
      str[2 * i + 3] = alphabet[uint8(data[i] & 0x0f)];
    }
    return string(str);
  }
}

File 11 of 13 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 12 of 13 : draft-IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

File 13 of 13 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 9999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_WETH","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes","name":"clientData","type":"bytes"}],"name":"ClientData","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"reason","type":"string"}],"name":"Error","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"pair","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountOut","type":"uint256"},{"indexed":false,"internalType":"address","name":"output","type":"address"}],"name":"Exchange","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":"sender","type":"address"},{"indexed":false,"internalType":"contract IERC20","name":"srcToken","type":"address"},{"indexed":false,"internalType":"contract IERC20","name":"dstToken","type":"address"},{"indexed":false,"internalType":"address","name":"dstReceiver","type":"address"},{"indexed":false,"internalType":"uint256","name":"spentAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"returnAmount","type":"uint256"}],"name":"Swapped","type":"event"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"rescueFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IAggregationExecutor","name":"caller","type":"address"},{"components":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"contract IERC20","name":"dstToken","type":"address"},{"internalType":"address[]","name":"srcReceivers","type":"address[]"},{"internalType":"uint256[]","name":"srcAmounts","type":"uint256[]"},{"internalType":"address","name":"dstReceiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturnAmount","type":"uint256"},{"internalType":"uint256","name":"flags","type":"uint256"},{"internalType":"bytes","name":"permit","type":"bytes"}],"internalType":"struct MetaAggregationRouter.SwapDescription","name":"desc","type":"tuple"},{"internalType":"bytes","name":"executorData","type":"bytes"},{"internalType":"bytes","name":"clientData","type":"bytes"}],"name":"swap","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"},{"internalType":"uint256","name":"gasUsed","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IAggregationExecutor1Inch","name":"caller","type":"address"},{"components":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"contract IERC20","name":"dstToken","type":"address"},{"internalType":"address payable","name":"srcReceiver1Inch","type":"address"},{"internalType":"address payable","name":"dstReceiver","type":"address"},{"internalType":"address[]","name":"srcReceivers","type":"address[]"},{"internalType":"uint256[]","name":"srcAmounts","type":"uint256[]"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturnAmount","type":"uint256"},{"internalType":"uint256","name":"flags","type":"uint256"},{"internalType":"bytes","name":"permit","type":"bytes"}],"internalType":"struct SwapDescriptionExecutor1Inch","name":"desc","type":"tuple"},{"internalType":"bytes","name":"executor1InchData","type":"bytes"},{"internalType":"bytes","name":"clientData","type":"bytes"}],"name":"swapExecutor1Inch","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"},{"internalType":"uint256","name":"gasUsed","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"router1Inch","type":"address"},{"internalType":"bytes","name":"router1InchData","type":"bytes"},{"components":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"contract IERC20","name":"dstToken","type":"address"},{"internalType":"address[]","name":"srcReceivers","type":"address[]"},{"internalType":"uint256[]","name":"srcAmounts","type":"uint256[]"},{"internalType":"address","name":"dstReceiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturnAmount","type":"uint256"},{"internalType":"uint256","name":"flags","type":"uint256"},{"internalType":"bytes","name":"permit","type":"bytes"}],"internalType":"struct MetaAggregationRouter.SwapDescription","name":"desc","type":"tuple"},{"internalType":"bytes","name":"clientData","type":"bytes"}],"name":"swapRouter1Inch","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"},{"internalType":"uint256","name":"gasUsed","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract IAggregationExecutor","name":"caller","type":"address"},{"components":[{"internalType":"contract IERC20","name":"srcToken","type":"address"},{"internalType":"contract IERC20","name":"dstToken","type":"address"},{"internalType":"address[]","name":"srcReceivers","type":"address[]"},{"internalType":"uint256[]","name":"srcAmounts","type":"uint256[]"},{"internalType":"address","name":"dstReceiver","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"minReturnAmount","type":"uint256"},{"internalType":"uint256","name":"flags","type":"uint256"},{"internalType":"bytes","name":"permit","type":"bytes"}],"internalType":"struct MetaAggregationRouter.SwapDescription","name":"desc","type":"tuple"},{"internalType":"bytes","name":"executorData","type":"bytes"},{"internalType":"bytes","name":"clientData","type":"bytes"}],"name":"swapSimpleMode","outputs":[{"internalType":"uint256","name":"returnAmount","type":"uint256"},{"internalType":"uint256","name":"gasUsed","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"bool","name":"value","type":"bool"}],"name":"updateWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000b31f66aa3c1e785363f0875a1b74e27b85fd66c7

-----Decoded View---------------
Arg [0] : _WETH (address): 0xb31f66aa3c1e785363f0875a1b74e27b85fd66c7

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000b31f66aa3c1e785363f0875a1b74e27b85fd66c7


Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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