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Gas: 30 GWei
 

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Transaction Hash
Method
Block
From
To
Withdraw530284182024-02-02 7:04:14446 days ago1706857454IN
0x2CA727BC...8c5b2dC5b
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Withdraw530283892024-02-02 7:03:12446 days ago1706857392IN
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Withdraw530283652024-02-02 7:02:20446 days ago1706857340IN
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Withdraw530283412024-02-02 7:01:30446 days ago1706857290IN
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0 POL0.0032320270.7599073
Withdraw530283282024-02-02 7:01:02446 days ago1706857262IN
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Route530079252024-02-01 17:54:08446 days ago1706810048IN
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Latest 25 internal transactions (View All)

Parent Transaction Hash Block From To
530284182024-02-02 7:04:14446 days ago1706857454
0x2CA727BC...8c5b2dC5b
3.55138238 POL
530030542024-02-01 14:54:23446 days ago1706799263
0x2CA727BC...8c5b2dC5b
62.173 POL
529407852024-01-30 23:01:26448 days ago1706655686
0x2CA727BC...8c5b2dC5b
309.627 POL
529034842024-01-29 23:46:16449 days ago1706571976
0x2CA727BC...8c5b2dC5b
307.203 POL
528241322024-01-27 21:49:03451 days ago1706392143
0x2CA727BC...8c5b2dC5b
318.0387 POL
527064282024-01-24 19:17:13454 days ago1706123833
0x2CA727BC...8c5b2dC5b
7.205115 POL
527064282024-01-24 19:17:13454 days ago1706123833
0x2CA727BC...8c5b2dC5b
473.135885 POL
525557502024-01-20 19:58:25458 days ago1705780705
0x2CA727BC...8c5b2dC5b
322.569 POL
523718912024-01-16 0:35:06463 days ago1705365306
0x2CA727BC...8c5b2dC5b
11.888 POL
523669262024-01-15 21:36:27463 days ago1705354587
0x2CA727BC...8c5b2dC5b
295.516 POL
522572872024-01-13 2:17:47466 days ago1705112267
0x2CA727BC...8c5b2dC5b
291.927 POL
522535012024-01-12 23:45:37466 days ago1705103137
0x2CA727BC...8c5b2dC5b
290.0294 POL
520545612024-01-07 18:29:50471 days ago1704652190
0x2CA727BC...8c5b2dC5b
30.368 POL
520545012024-01-07 18:27:42471 days ago1704652062
0x2CA727BC...8c5b2dC5b
24.294 POL
520544832024-01-07 18:26:40471 days ago1704652000
0x2CA727BC...8c5b2dC5b
24.294 POL
519023452024-01-03 19:21:50475 days ago1704309710
0x2CA727BC...8c5b2dC5b
292.279 POL
518768842024-01-03 3:38:01476 days ago1704253081
0x2CA727BC...8c5b2dC5b
256.698 POL
517086582023-12-29 18:50:47480 days ago1703875847
0x2CA727BC...8c5b2dC5b
255.287 POL
516661402023-12-28 17:26:41481 days ago1703784401
0x2CA727BC...8c5b2dC5b
247.93 POL
516519142023-12-28 8:54:59481 days ago1703753699
0x2CA727BC...8c5b2dC5b
0.00966 POL
516231912023-12-27 15:23:02482 days ago1703690582
0x2CA727BC...8c5b2dC5b
232.749 POL
516213762023-12-27 14:18:46482 days ago1703686726
0x2CA727BC...8c5b2dC5b
223.434 POL
516211632023-12-27 14:11:12482 days ago1703686272
0x2CA727BC...8c5b2dC5b
9.611 POL
514137042023-12-22 7:06:42488 days ago1703228802
0x2CA727BC...8c5b2dC5b
305.213 POL
514043572023-12-22 0:34:57488 days ago1703205297
0x2CA727BC...8c5b2dC5b
12.293 POL
View All Internal Transactions
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Contract Source Code Verified (Exact Match)

Contract Name:
DePayRouterV1

Compiler Version
v0.8.14+commit.80d49f37

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2022-05-21
*/

// Dependency file: @openzeppelin/contracts/token/ERC20/IERC20.sol

// SPDX-License-Identifier: MIT

// pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}


// Dependency file: @openzeppelin/contracts/utils/math/SafeMath.sol


// pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}


// Dependency file: @openzeppelin/contracts/utils/Address.sol


// pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private 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);
            }
        }
    }
}


// Dependency file: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol


// pragma solidity ^0.8.0;

// import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import "@openzeppelin/contracts/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");
        }
    }
}


// Dependency file: contracts/interfaces/IDePayRouterV1Plugin.sol


// pragma solidity >=0.8.6 <0.9.0;

interface IDePayRouterV1Plugin {

  function delegate() external returns(bool);

  function execute(
    address[] calldata path,
    uint[] calldata amounts,
    address[] calldata addresses,
    string[] calldata data
  ) external payable returns(bool);
  
}


// Dependency file: contracts/libraries/Helper.sol


// pragma solidity >=0.8.6 <0.9.0;

// Helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false

library Helper {
  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))),
      'Helper::safeApprove: approve failed'
    );
  }

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

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

  function safeTransferETH(address to, uint256 value) internal {
    (bool success, ) = to.call{value: value}(new bytes(0));
    require(success, 'Helper::safeTransferETH: ETH transfer failed');
  }

  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);
      }
    }
  }
}


// Dependency file: @openzeppelin/contracts/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;
    }
}


// Dependency file: @openzeppelin/contracts/access/Ownable.sol


// pragma solidity ^0.8.0;

// import "@openzeppelin/contracts/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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}


// Dependency file: contracts/DePayRouterV1Configuration.sol


// pragma solidity >=0.8.6 <0.9.0;
pragma abicoder v2;

// import "@openzeppelin/contracts/access/Ownable.sol";

// Prevents unwanted access to configuration in DePayRouterV1
// Potentially occuring through delegatecall(ing) plugins.
contract DePayRouterV1Configuration is Ownable {
  
  // List of approved plugins. Use approvePlugin to add new plugins.
  mapping (address => address) public approvedPlugins;

  // Approves the provided plugin.
  function approvePlugin(address plugin) external onlyOwner returns(bool) {
    approvedPlugins[plugin] = plugin;
    emit PluginApproved(plugin);
    return true;
  }

  // Event to emit newly approved plugin.
  event PluginApproved(
    address indexed pluginAddress
  );

  // Disapproves the provided plugin.
  function disapprovePlugin(address plugin) external onlyOwner returns(bool) {
    approvedPlugins[plugin] = address(0);
    emit PluginDisapproved(plugin);
    return true;
  }

  // Event to emit disapproved plugin.
  event PluginDisapproved(
    address indexed pluginAddress
  );
}


// Root file: contracts/DePayRouterV1.sol


pragma solidity >=0.8.6 <0.9.0;

// import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import "@openzeppelin/contracts/utils/math/SafeMath.sol";
// import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
// import 'contracts/interfaces/IDePayRouterV1Plugin.sol';
// import 'contracts/libraries/Helper.sol';
// import 'contracts/DePayRouterV1Configuration.sol';

contract DePayRouterV1 {
  
  using SafeMath for uint;
  using SafeERC20 for IERC20;

  // Address representating ETH (e.g. in payment routing paths)
  address public constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

  // Instance of DePayRouterV1Configuration
  DePayRouterV1Configuration public immutable configuration;

  // Pass immutable instance to configuration.
  // This protects from potential delegatecall and access overlay attacks:
  // https://github.com/DePayFi/depay-ethereum-payments/blob/master/docs/Audit3.md#H02
  constructor (
    address _configuration
  ) {
    configuration = DePayRouterV1Configuration(_configuration);
  }

  // Proxy modifier to DePayRouterV1Configuration
  modifier onlyOwner() {
    require(configuration.owner() == msg.sender, "Ownable: caller is not the owner");
    _;
  }

  receive() external payable {
    // Accepts ETH payments which is require in order
    // to swap from and to ETH
    // especially unwrapping WETH as part of token swaps.
  }

  // The main function to route transactions.
  function route(
    // The path of the token conversion.
    address[] calldata path,
    // Amounts passed to proccessors:
    // e.g. [amountIn, amountOut, deadline]
    uint[] calldata amounts,
    // Addresses passed to plugins:
    // e.g. [receiver]
    address[] calldata addresses,
    // List and order of plugins to be executed for this payment:
    // e.g. [Uniswap,paymentPlugin] to swap and pay
    address[] calldata plugins,
    // Data passed to plugins:
    // e.g. ["signatureOfSmartContractFunction(address,uint)"] receiving the payment
    string[] calldata data
  ) external payable returns(bool) {
    uint balanceBefore = _balanceBefore(path[path.length-1]);
    _ensureTransferIn(path[0], amounts[0]);
    _execute(path, amounts, addresses, plugins, data);
    _ensureBalance(path[path.length-1], balanceBefore);
    return true;
  }

  // Returns the balance for a token (or ETH) before the payment is executed.
  // In case of ETH we need to deduct what has been payed in as part of the transaction itself.
  function _balanceBefore(address token) private returns (uint balance) {
    balance = _balance(token);
    if(token == ETH) { balance -= msg.value; }
  }

  // This makes sure that the sender has payed in the token (or ETH)
  // required to perform the payment.
  function _ensureTransferIn(address tokenIn, uint amountIn) private {
    if(tokenIn == ETH) { 
      require(msg.value >= amountIn, 'DePay: Insufficient amount payed in!'); 
    } else {
      Helper.safeTransferFrom(tokenIn, msg.sender, address(this), amountIn);
    }
  }

  // Executes plugins in the given order.
  function _execute(
    address[] calldata path,
    uint[] calldata amounts,
    address[] calldata addresses,
    address[] calldata plugins,
    string[] calldata data
  ) internal {
    for (uint i = 0; i < plugins.length; i++) {
      require(_isApproved(plugins[i]), 'DePay: Plugin not approved!');
      
      IDePayRouterV1Plugin plugin = IDePayRouterV1Plugin(configuration.approvedPlugins(plugins[i]));

      if(plugin.delegate()) {
        (bool success, bytes memory returnData) = address(plugin).delegatecall(abi.encodeWithSelector(
            plugin.execute.selector, path, amounts, addresses, data
        ));
        require(success, string(returnData));
      } else {
        (bool success, bytes memory returnData) = address(plugin).call(abi.encodeWithSelector(
            plugin.execute.selector, path, amounts, addresses, data
        ));
        require(success, string(returnData));
      }
    }
  }

  // This makes sure that the balance after the payment is not less than before.
  // Prevents draining the contract.
  function _ensureBalance(address tokenOut, uint balanceBefore) private view {
    require(_balance(tokenOut) >= balanceBefore, 'DePay: Insufficient balance after payment!');
  }

  // Returns the balance of the payment plugin contract for a token (or ETH).
  function _balance(address token) private view returns(uint) {
    if(token == ETH) {
        return address(this).balance;
    } else {
        return IERC20(token).balanceOf(address(this));
    }
  }

  // Function to check if a plugin address is approved.
  function isApproved(
    address pluginAddress
  ) external view returns(bool){
    return _isApproved(pluginAddress);
  }

  // Internal function to check if a plugin address is approved.
  function _isApproved(
    address pluginAddress
  ) internal view returns(bool) {
    return (configuration.approvedPlugins(pluginAddress) != address(0));
  }
  
  // Allows to withdraw accidentally sent ETH or tokens.
  function withdraw(
    address token,
    uint amount
  ) external onlyOwner returns(bool) {
    if(token == ETH) {
      Helper.safeTransferETH(payable(configuration.owner()), amount);
    } else {
      Helper.safeTransfer(token, payable(configuration.owner()), amount);
    }
    return true;
  }
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"_configuration","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"configuration","outputs":[{"internalType":"contract DePayRouterV1Configuration","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pluginAddress","type":"address"}],"name":"isApproved","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"address[]","name":"addresses","type":"address[]"},{"internalType":"address[]","name":"plugins","type":"address[]"},{"internalType":"string[]","name":"data","type":"string[]"}],"name":"route","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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)

0000000000000000000000005ec3153bacebb5e49136cf2d457f26f5df1b6780

-----Decoded View---------------
Arg [0] : _configuration (address): 0x5EC3153BACebb5e49136cF2d457f26f5Df1B6780

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000005ec3153bacebb5e49136cf2d457f26f5df1b6780


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Swarm Source

ipfs://ffb774747755e6f7c7e56dbc560576b1e0207606d57b7f27ca0ed6288a5d7368

Block Transaction Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.