Contract 0xe6484a64e2ea165943c734dC498070b5902CBc2b 1

 
 
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0xc113166ac1ed6f34a3b9befe1d98c053270ca1c43e721c29e7a2b0d5ed20acf6Accrue Fees And ...277655352022-04-30 18:48:0422 days 4 hrs ago0x5d5de70502cc838506af0210b37e14b877e4ca4d IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.006304236103 38.219999901
0x777037cc748f57137e33417da65a532a0fbadf9c99f1a6dbd68695ca3991e22eAccrue Fees And ...265924942022-03-31 21:54:0252 days 1 hr ago0x5d5de70502cc838506af0210b37e14b877e4ca4d IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.00533435364 32.340000006
0xda880c47614e74c0a5fde8a099369282afa705cb1fbd77cc54bf6c226d5b4c47Accrue Fees And ...257723852022-03-09 17:20:0874 days 5 hrs ago0xb647055a9915bf9c8021a684e175a353525b9890 IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.004445729222 30.070000015
0xeb3ac80a0cd618ab4d639a238eb97857016c5889b45b8db839567637c70a53e9Accrue Fees And ...254298012022-02-28 18:18:1383 days 4 hrs ago0xb647055a9915bf9c8021a684e175a353525b9890 IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.004444776652 30.063557032
0xa07e1706351817a4e437c5a85aac623d5f108c3b6e16e5ba32bccb70afabc132Accrue Fees And ...243835052022-01-31 13:46:10111 days 9 hrs ago0xb647055a9915bf9c8021a684e175a353525b9890 IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.00443564149630.001768707
0xa89f3c64e699f77f9f9975b76cc96ecc3f5520b3d243d75f520978ab14cd2d9fAccrue Fees And ...231892362021-12-31 16:42:26142 days 6 hrs ago0xb647055a9915bf9c8021a684e175a353525b9890 IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.01927044140
0xafbe2df6d7bcef91c7c99ecb0309c2e5d524b3f8e5bc5723fec39d001fb76904Transfer Ownersh...222209182021-12-07 1:03:18166 days 22 hrs agoIndex Coop: Deployer IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.0010082835
0x8c0fa1f12c6e3fb0063d667295d92cf6f696657882c92a87157d093bf545e46bAccrue Fees And ...222200062021-12-07 0:28:00166 days 22 hrs agoIndex Coop: Deployer IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.0047930130
0x2fcb9c50d18f9372b28db7240cf6680de0fe2c13dcefe0a17287a2896a96a18aUpdate Operator ...222199872021-12-07 0:27:22166 days 22 hrs agoIndex Coop: Deployer IN  0xe6484a64e2ea165943c734dc498070b5902cbc2b0 MATIC0.0010381230
0xb817adcb557652621b0736afe9b07fed536966a108a2911d37c79f1b46a91a760x60806040222177912021-12-06 22:59:02167 days 10 mins agoIndex Coop: Deployer IN  Contract Creation0 MATIC0.0839437530
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xadfb2FBdE79f579c617B8b03ce1Bb7594495554e

Contract Name:
FeeSplitExtension

Compiler Version
v0.6.10+commit.00c0fcaf

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 16 : FeeSplitExtension.sol
/*
    Copyright 2021 IndexCooperative

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;

import { Address } from "@openzeppelin/contracts/utils/Address.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";

import { BaseExtension } from "../lib/BaseExtension.sol";
import { IIssuanceModule } from "../interfaces/IIssuanceModule.sol";
import { IBaseManager } from "../interfaces/IBaseManager.sol";
import { ISetToken } from "../interfaces/ISetToken.sol";
import { IStreamingFeeModule } from "../interfaces/IStreamingFeeModule.sol";
import { PreciseUnitMath } from "../lib/PreciseUnitMath.sol";
import { TimeLockUpgrade } from "../lib/TimeLockUpgrade.sol";
import { MutualUpgrade } from "../lib/MutualUpgrade.sol";


/**
 * @title FeeSplitExtension
 * @author Set Protocol
 *
 * Smart contract extension that allows for splitting and setting streaming and mint/redeem fees.
 */
contract FeeSplitExtension is BaseExtension, TimeLockUpgrade, MutualUpgrade {
    using Address for address;
    using PreciseUnitMath for uint256;
    using SafeMath for uint256;

    /* ============ Events ============ */

    event FeesDistributed(
        address indexed _operatorFeeRecipient,
        address indexed _methodologist,
        uint256 _operatorTake,
        uint256 _methodologistTake
    );

    /* ============ State Variables ============ */

    ISetToken public setToken;
    IStreamingFeeModule public streamingFeeModule;
    IIssuanceModule public issuanceModule;

    // Percent of fees in precise units (10^16 = 1%) sent to operator, rest to methodologist
    uint256 public operatorFeeSplit;

    // Address which receives operator's share of fees when they're distributed. (See IIP-72)
    address public operatorFeeRecipient;

    /* ============ Constructor ============ */

    constructor(
        IBaseManager _manager,
        IStreamingFeeModule _streamingFeeModule,
        IIssuanceModule _issuanceModule,
        uint256 _operatorFeeSplit,
        address _operatorFeeRecipient
    )
        public
        BaseExtension(_manager)
    {
        streamingFeeModule = _streamingFeeModule;
        issuanceModule = _issuanceModule;
        operatorFeeSplit = _operatorFeeSplit;
        operatorFeeRecipient = _operatorFeeRecipient;
        setToken = manager.setToken();
    }

    /* ============ External Functions ============ */

    /**
     * ANYONE CALLABLE: Accrues fees from streaming fee module. Gets resulting balance after fee accrual, calculates fees for
     * operator and methodologist, and sends to operator fee recipient and methodologist respectively. NOTE: mint/redeem fees
     * will automatically be sent to this address so reading the balance of the SetToken in the contract after accrual is
     * sufficient for accounting for all collected fees.
     */
    function accrueFeesAndDistribute() public {
        // Emits a FeeActualized event
        streamingFeeModule.accrueFee(setToken);

        uint256 totalFees = setToken.balanceOf(address(this));

        address methodologist = manager.methodologist();

        uint256 operatorTake = totalFees.preciseMul(operatorFeeSplit);
        uint256 methodologistTake = totalFees.sub(operatorTake);

        if (operatorTake > 0) {
            setToken.transfer(operatorFeeRecipient, operatorTake);
        }

        if (methodologistTake > 0) {
            setToken.transfer(methodologist, methodologistTake);
        }

        emit FeesDistributed(operatorFeeRecipient, methodologist, operatorTake, methodologistTake);
    }

    /**
     * MUTUAL UPGRADE: Initializes the issuance module. Operator and Methodologist must each call
     * this function to execute the update.
     *
     * This method is called after invoking `replaceProtectedModule` or `emergencyReplaceProtectedModule`
     * to configure the replacement streaming fee module's fee settings.
     *
     * @param _maxManagerFee            Max size of issuance and redeem fees in precise units (10^16 = 1%).
     * @param _managerIssueFee          Manager issuance fees in precise units (10^16 = 1%)
     * @param _managerRedeemFee         Manager redeem fees in precise units (10^16 = 1%)
     * @param _feeRecipient             Address that receives all manager issue and redeem fees
     * @param _managerIssuanceHook      Address of manager defined hook contract
     */
    function initializeIssuanceModule(
        uint256 _maxManagerFee,
        uint256 _managerIssueFee,
        uint256 _managerRedeemFee,
        address _feeRecipient,
        address _managerIssuanceHook
    )
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
    {
        bytes memory callData = abi.encodeWithSelector(
            IIssuanceModule.initialize.selector,
            manager.setToken(),
            _maxManagerFee,
            _managerIssueFee,
            _managerRedeemFee,
            _feeRecipient,
            _managerIssuanceHook
        );

        invokeManager(address(issuanceModule), callData);
    }

    /**
     * MUTUAL UPGRADE: Initializes the issuance module. Operator and Methodologist must each call
     * this function to execute the update.
     *
     * This method is called after invoking `replaceProtectedModule` or `emergencyReplaceProtectedModule`
     * to configure the replacement streaming fee module's fee settings.
     *
     * @dev FeeState settings encode the following struct
     * ```
     * struct FeeState {
     *   address feeRecipient;                // Address to accrue fees to
     *   uint256 maxStreamingFeePercentage;   // Max streaming fee maanager commits to using (1% = 1e16, 100% = 1e18)
     *   uint256 streamingFeePercentage;      // Percent of Set accruing to manager annually (1% = 1e16, 100% = 1e18)
     *   uint256 lastStreamingFeeTimestamp;   // Timestamp last streaming fee was accrued
     *}
     *```
     * @param _settings     FeeModule.FeeState settings
     */
    function initializeStreamingFeeModule(IStreamingFeeModule.FeeState memory _settings)
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
    {
        bytes memory callData = abi.encodeWithSelector(
            IStreamingFeeModule.initialize.selector,
            manager.setToken(),
            _settings
        );

        invokeManager(address(streamingFeeModule), callData);
    }

    /**
     * MUTUAL UPGRADE: Updates streaming fee on StreamingFeeModule. Operator and Methodologist must each call
     * this function to execute the update. Because the method is timelocked, each party must call it twice:
     * once to set the lock and once to execute.
     *
     * Method is timelocked to protect token owners from sudden changes in fee structure which
     * they would rather not bear. The delay gives them a chance to exit their positions without penalty.
     *
     * NOTE: This will accrue streaming fees though not send to operator fee recipient and methodologist.
     *
     * @param _newFee       Percent of Set accruing to fee extension annually (1% = 1e16, 100% = 1e18)
     */
    function updateStreamingFee(uint256 _newFee)
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
        timeLockUpgrade
    {
        bytes memory callData = abi.encodeWithSignature("updateStreamingFee(address,uint256)", manager.setToken(), _newFee);
        invokeManager(address(streamingFeeModule), callData);
    }

    /**
     * MUTUAL UPGRADE: Updates issue fee on IssuanceModule. Only is executed once time lock has passed.
     * Operator and Methodologist must each call this function to execute the update. Because the method
     * is timelocked, each party must call it twice: once to set the lock and once to execute.
     *
     * Method is timelocked to protect token owners from sudden changes in fee structure which
     * they would rather not bear. The delay gives them a chance to exit their positions without penalty.
     *
     * @param _newFee           New issue fee percentage in precise units (1% = 1e16, 100% = 1e18)
     */
    function updateIssueFee(uint256 _newFee)
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
        timeLockUpgrade
    {
        bytes memory callData = abi.encodeWithSignature("updateIssueFee(address,uint256)", manager.setToken(), _newFee);
        invokeManager(address(issuanceModule), callData);
    }

    /**
     * MUTUAL UPGRADE: Updates redeem fee on IssuanceModule. Only is executed once time lock has passed.
     * Operator and Methodologist must each call this function to execute the update. Because the method is
     * timelocked, each party must call it twice: once to set the lock and once to execute.
     *
     * Method is timelocked to protect token owners from sudden changes in fee structure which
     * they would rather not bear. The delay gives them a chance to exit their positions without penalty.
     *
     * @param _newFee           New redeem fee percentage in precise units (1% = 1e16, 100% = 1e18)
     */
    function updateRedeemFee(uint256 _newFee)
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
        timeLockUpgrade
    {
        bytes memory callData = abi.encodeWithSignature("updateRedeemFee(address,uint256)", manager.setToken(), _newFee);
        invokeManager(address(issuanceModule), callData);
    }

    /**
     * MUTUAL UPGRADE: Updates fee recipient on both streaming fee and issuance modules.
     *
     * @param _newFeeRecipient  Address of new fee recipient. This should be the address of the fee extension itself.
     */
    function updateFeeRecipient(address _newFeeRecipient)
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
    {
        bytes memory callData = abi.encodeWithSignature("updateFeeRecipient(address,address)", manager.setToken(), _newFeeRecipient);
        invokeManager(address(streamingFeeModule), callData);
        invokeManager(address(issuanceModule), callData);
    }

    /**
     * MUTUAL UPGRADE: Updates fee split between operator and methodologist. Split defined in precise units (1% = 10^16).
     *
     * @param _newFeeSplit      Percent of fees in precise units (10^16 = 1%) sent to operator, (rest go to the methodologist).
     */
    function updateFeeSplit(uint256 _newFeeSplit)
        external
        mutualUpgrade(manager.operator(), manager.methodologist())
    {
        require(_newFeeSplit <= PreciseUnitMath.preciseUnit(), "Fee must be less than 100%");
        accrueFeesAndDistribute();
        operatorFeeSplit = _newFeeSplit;
    }

    /**
     * OPERATOR ONLY: Updates the address that receives the operator's share of the fees (see IIP-72)
     *
     * @param _newOperatorFeeRecipient  Address to send operator's fees to.
     */
    function updateOperatorFeeRecipient(address _newOperatorFeeRecipient)
        external
        onlyOperator
    {
        require(_newOperatorFeeRecipient != address(0), "Zero address not valid");
        operatorFeeRecipient = _newOperatorFeeRecipient;
    }
}

File 2 of 16 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <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;
        // solhint-disable-next-line no-inline-assembly
        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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 3 of 16 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
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) {
        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) {
        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) {
        // 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) {
        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) {
        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) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        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) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @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. 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) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b > 0, "SafeMath: modulo by zero");
        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) {
        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.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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) {
        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) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

File 4 of 16 : BaseExtension.sol
/*
    Copyright 2021 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;

import { AddressArrayUtils } from "../lib/AddressArrayUtils.sol";
import { IBaseManager } from "../interfaces/IBaseManager.sol";

/**
 * @title BaseExtension
 * @author Set Protocol
 *
 * Abstract class that houses common extension-related state and functions.
 */
abstract contract BaseExtension {
    using AddressArrayUtils for address[];

    /* ============ Events ============ */

    event CallerStatusUpdated(address indexed _caller, bool _status);
    event AnyoneCallableUpdated(bool indexed _status);

    /* ============ Modifiers ============ */

    /**
     * Throws if the sender is not the SetToken operator
     */
    modifier onlyOperator() {
        require(msg.sender == manager.operator(), "Must be operator");
        _;
    }

    /**
     * Throws if the sender is not the SetToken methodologist
     */
    modifier onlyMethodologist() {
        require(msg.sender == manager.methodologist(), "Must be methodologist");
        _;
    }

    /**
     * Throws if caller is a contract, can be used to stop flash loan and sandwich attacks
     */
    modifier onlyEOA() {
        require(msg.sender == tx.origin, "Caller must be EOA Address");
        _;
    }

    /**
     * Throws if not allowed caller
     */
    modifier onlyAllowedCaller(address _caller) {
        require(isAllowedCaller(_caller), "Address not permitted to call");
        _;
    }

    /* ============ State Variables ============ */

    // Instance of manager contract
    IBaseManager public manager;

    // Boolean indicating if anyone can call function
    bool public anyoneCallable;

    // Mapping of addresses allowed to call function
    mapping(address => bool) public callAllowList;

    /* ============ Constructor ============ */

    constructor(IBaseManager _manager) public { manager = _manager; }

    /* ============ External Functions ============ */

    /**
     * OPERATOR ONLY: Toggle ability for passed addresses to call only allowed caller functions
     *
     * @param _callers           Array of caller addresses to toggle status
     * @param _statuses          Array of statuses for each caller
     */
    function updateCallerStatus(address[] calldata _callers, bool[] calldata _statuses) external onlyOperator {
        require(_callers.length == _statuses.length, "Array length mismatch");
        require(_callers.length > 0, "Array length must be > 0");
        require(!_callers.hasDuplicate(), "Cannot duplicate callers");

        for (uint256 i = 0; i < _callers.length; i++) {
            address caller = _callers[i];
            bool status = _statuses[i];
            callAllowList[caller] = status;
            emit CallerStatusUpdated(caller, status);
        }
    }

    /**
     * OPERATOR ONLY: Toggle whether anyone can call function, bypassing the callAllowlist
     *
     * @param _status           Boolean indicating whether to allow anyone call
     */
    function updateAnyoneCallable(bool _status) external onlyOperator {
        anyoneCallable = _status;
        emit AnyoneCallableUpdated(_status);
    }

    /* ============ Internal Functions ============ */

    /**
     * Invoke manager to transfer tokens from manager to other contract.
     *
     * @param _token           Token being transferred from manager contract
     * @param _amount          Amount of token being transferred
     */
    function invokeManagerTransfer(address _token, address _destination, uint256 _amount) internal {
        manager.transferTokens(_token, _destination, _amount);
    }

    /**
     * Invoke call from manager
     *
     * @param _module           Module to interact with
     * @param _encoded          Encoded byte data
     */
    function invokeManager(address _module, bytes memory _encoded) internal {
        manager.interactManager(_module, _encoded);
    }

    /**
     * Determine if passed address is allowed to call function. If anyoneCallable set to true anyone can call otherwise needs to be approved.
     *
     * return bool              Boolean indicating if allowed caller
     */
    function isAllowedCaller(address _caller) internal view virtual returns (bool) {
        return anyoneCallable || callAllowList[_caller];
    }
}

File 5 of 16 : IIssuanceModule.sol
/*
    Copyright 2021 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;

import { ISetToken } from "./ISetToken.sol";

/**
 * @title IDebtIssuanceModule
 * @author Set Protocol
 *
 * Interface for interacting with Debt Issuance module interface.
 */
interface IIssuanceModule {
    function updateIssueFee(ISetToken _setToken, uint256 _newIssueFee) external;
    function updateRedeemFee(ISetToken _setToken, uint256 _newRedeemFee) external;
    function updateFeeRecipient(ISetToken _setToken, address _newRedeemFee) external;

    function initialize(
        ISetToken _setToken,
        uint256 _maxManagerFee,
        uint256 _managerIssueFee,
        uint256 _managerRedeemFee,
        address _feeRecipient,
        address _managerIssuanceHook
    ) external;
}

File 6 of 16 : IBaseManager.sol
/*
    Copyright 2021 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";

import { ISetToken } from "./ISetToken.sol";

interface IBaseManager {
    function setToken() external returns(ISetToken);

    function methodologist() external returns(address);

    function operator() external returns(address);

    function interactManager(address _module, bytes calldata _encoded) external;

    function transferTokens(address _token, address _destination, uint256 _amount) external;
}

File 7 of 16 : ISetToken.sol
// SPDX-License-Identifier: Apache License, Version 2.0
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";

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

/**
 * @title ISetToken
 * @author Set Protocol
 *
 * Interface for operating with SetTokens.
 */
interface ISetToken is IERC20 {

    /* ============ Enums ============ */

    enum ModuleState {
        NONE,
        PENDING,
        INITIALIZED
    }

    /* ============ Structs ============ */
    /**
     * The base definition of a SetToken Position
     *
     * @param component           Address of token in the Position
     * @param module              If not in default state, the address of associated module
     * @param unit                Each unit is the # of components per 10^18 of a SetToken
     * @param positionState       Position ENUM. Default is 0; External is 1
     * @param data                Arbitrary data
     */
    struct Position {
        address component;
        address module;
        int256 unit;
        uint8 positionState;
        bytes data;
    }

    /**
     * A struct that stores a component's cash position details and external positions
     * This data structure allows O(1) access to a component's cash position units and
     * virtual units.
     *
     * @param virtualUnit               Virtual value of a component's DEFAULT position. Stored as virtual for efficiency
     *                                  updating all units at once via the position multiplier. Virtual units are achieved
     *                                  by dividing a "real" value by the "positionMultiplier"
     * @param componentIndex
     * @param externalPositionModules   List of external modules attached to each external position. Each module
     *                                  maps to an external position
     * @param externalPositions         Mapping of module => ExternalPosition struct for a given component
     */
    struct ComponentPosition {
      int256 virtualUnit;
      address[] externalPositionModules;
      mapping(address => ExternalPosition) externalPositions;
    }

    /**
     * A struct that stores a component's external position details including virtual unit and any
     * auxiliary data.
     *
     * @param virtualUnit       Virtual value of a component's EXTERNAL position.
     * @param data              Arbitrary data
     */
    struct ExternalPosition {
      int256 virtualUnit;
      bytes data;
    }


    /* ============ Functions ============ */

    function addComponent(address _component) external;
    function removeComponent(address _component) external;
    function editDefaultPositionUnit(address _component, int256 _realUnit) external;
    function addExternalPositionModule(address _component, address _positionModule) external;
    function removeExternalPositionModule(address _component, address _positionModule) external;
    function editExternalPositionUnit(address _component, address _positionModule, int256 _realUnit) external;
    function editExternalPositionData(address _component, address _positionModule, bytes calldata _data) external;

    function invoke(address _target, uint256 _value, bytes calldata _data) external returns(bytes memory);

    function editPositionMultiplier(int256 _newMultiplier) external;

    function mint(address _account, uint256 _quantity) external;
    function burn(address _account, uint256 _quantity) external;

    function lock() external;
    function unlock() external;

    function addModule(address _module) external;
    function removeModule(address _module) external;
    function initializeModule() external;

    function setManager(address _manager) external;

    function manager() external view returns (address);
    function moduleStates(address _module) external view returns (ModuleState);
    function getModules() external view returns (address[] memory);

    function getDefaultPositionRealUnit(address _component) external view returns(int256);
    function getExternalPositionRealUnit(address _component, address _positionModule) external view returns(int256);
    function getComponents() external view returns(address[] memory);
    function getExternalPositionModules(address _component) external view returns(address[] memory);
    function getExternalPositionData(address _component, address _positionModule) external view returns(bytes memory);
    function isExternalPositionModule(address _component, address _module) external view returns(bool);
    function isComponent(address _component) external view returns(bool);

    function positionMultiplier() external view returns (int256);
    function getPositions() external view returns (Position[] memory);
    function getTotalComponentRealUnits(address _component) external view returns(int256);

    function isInitializedModule(address _module) external view returns(bool);
    function isPendingModule(address _module) external view returns(bool);
    function isLocked() external view returns (bool);
}

File 8 of 16 : IStreamingFeeModule.sol
// SPDX-License-Identifier: Apache License, Version 2.0
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";

import { ISetToken } from "./ISetToken.sol";

interface IStreamingFeeModule {
    struct FeeState {
        address feeRecipient;
        uint256 maxStreamingFeePercentage;
        uint256 streamingFeePercentage;
        uint256 lastStreamingFeeTimestamp;
    }

    function getFee(ISetToken _setToken) external view returns (uint256);
    function accrueFee(ISetToken _setToken) external;
    function updateStreamingFee(ISetToken _setToken, uint256 _newFee) external;
    function updateFeeRecipient(ISetToken _setToken, address _newFeeRecipient) external;
    function initialize(ISetToken _setToken, FeeState memory _settings) external;
}

File 9 of 16 : PreciseUnitMath.sol
/*
    Copyright 2020 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;

import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { SignedSafeMath } from "@openzeppelin/contracts/math/SignedSafeMath.sol";


/**
 * @title PreciseUnitMath
 * @author Set Protocol
 *
 * Arithmetic for fixed-point numbers with 18 decimals of precision. Some functions taken from
 * dYdX's BaseMath library.
 *
 * CHANGELOG:
 * - 9/21/20: Added safePower function
 */
library PreciseUnitMath {
    using SafeMath for uint256;
    using SignedSafeMath for int256;

    // The number One in precise units.
    uint256 constant internal PRECISE_UNIT = 10 ** 18;
    int256 constant internal PRECISE_UNIT_INT = 10 ** 18;

    // Max unsigned integer value
    uint256 constant internal MAX_UINT_256 = type(uint256).max;
    // Max and min signed integer value
    int256 constant internal MAX_INT_256 = type(int256).max;
    int256 constant internal MIN_INT_256 = type(int256).min;

    /**
     * @dev Getter function since constants can't be read directly from libraries.
     */
    function preciseUnit() internal pure returns (uint256) {
        return PRECISE_UNIT;
    }

    /**
     * @dev Getter function since constants can't be read directly from libraries.
     */
    function preciseUnitInt() internal pure returns (int256) {
        return PRECISE_UNIT_INT;
    }

    /**
     * @dev Getter function since constants can't be read directly from libraries.
     */
    function maxUint256() internal pure returns (uint256) {
        return MAX_UINT_256;
    }

    /**
     * @dev Getter function since constants can't be read directly from libraries.
     */
    function maxInt256() internal pure returns (int256) {
        return MAX_INT_256;
    }

    /**
     * @dev Getter function since constants can't be read directly from libraries.
     */
    function minInt256() internal pure returns (int256) {
        return MIN_INT_256;
    }

    /**
     * @dev Multiplies value a by value b (result is rounded down). It's assumed that the value b is the significand
     * of a number with 18 decimals precision.
     */
    function preciseMul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a.mul(b).div(PRECISE_UNIT);
    }

    /**
     * @dev Multiplies value a by value b (result is rounded towards zero). It's assumed that the value b is the
     * significand of a number with 18 decimals precision.
     */
    function preciseMul(int256 a, int256 b) internal pure returns (int256) {
        return a.mul(b).div(PRECISE_UNIT_INT);
    }

    /**
     * @dev Multiplies value a by value b (result is rounded up). It's assumed that the value b is the significand
     * of a number with 18 decimals precision.
     */
    function preciseMulCeil(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0 || b == 0) {
            return 0;
        }
        return a.mul(b).sub(1).div(PRECISE_UNIT).add(1);
    }

    /**
     * @dev Divides value a by value b (result is rounded down).
     */
    function preciseDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        return a.mul(PRECISE_UNIT).div(b);
    }


    /**
     * @dev Divides value a by value b (result is rounded towards 0).
     */
    function preciseDiv(int256 a, int256 b) internal pure returns (int256) {
        return a.mul(PRECISE_UNIT_INT).div(b);
    }

    /**
     * @dev Divides value a by value b (result is rounded up or away from 0).
     */
    function preciseDivCeil(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0, "Cant divide by 0");

        return a > 0 ? a.mul(PRECISE_UNIT).sub(1).div(b).add(1) : 0;
    }

    /**
     * @dev Divides value a by value b (result is rounded down - positive numbers toward 0 and negative away from 0).
     */
    function divDown(int256 a, int256 b) internal pure returns (int256) {
        require(b != 0, "Cant divide by 0");
        require(a != MIN_INT_256 || b != -1, "Invalid input");

        int256 result = a.div(b);
        if (a ^ b < 0 && a % b != 0) {
            result -= 1;
        }

        return result;
    }

    /**
     * @dev Multiplies value a by value b where rounding is towards the lesser number. 
     * (positive values are rounded towards zero and negative values are rounded away from 0). 
     */
    function conservativePreciseMul(int256 a, int256 b) internal pure returns (int256) {
        return divDown(a.mul(b), PRECISE_UNIT_INT);
    }

    /**
     * @dev Divides value a by value b where rounding is towards the lesser number. 
     * (positive values are rounded towards zero and negative values are rounded away from 0). 
     */
    function conservativePreciseDiv(int256 a, int256 b) internal pure returns (int256) {
        return divDown(a.mul(PRECISE_UNIT_INT), b);
    }

    /**
    * @dev Performs the power on a specified value, reverts on overflow.
    */
    function safePower(
        uint256 a,
        uint256 pow
    )
        internal
        pure
        returns (uint256)
    {
        require(a > 0, "Value must be positive");

        uint256 result = 1;
        for (uint256 i = 0; i < pow; i++){
            uint256 previousResult = result;

            // Using safemath multiplication prevents overflows
            result = previousResult.mul(a);
        }

        return result;
    }
}

File 10 of 16 : TimeLockUpgrade.sol
/*
    Copyright 2018 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;

import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";

/**
 * @title TimeLockUpgrade
 * @author Set Protocol
 *
 * The TimeLockUpgrade contract contains a modifier for handling minimum time period updates
 */
contract TimeLockUpgrade is
    Ownable
{
    using SafeMath for uint256;

    /* ============ State Variables ============ */

    // Timelock Upgrade Period in seconds
    uint256 public timeLockPeriod;

    // Mapping of upgradable units and initialized timelock
    mapping(bytes32 => uint256) public timeLockedUpgrades;

    /* ============ Events ============ */

    event UpgradeRegistered(
        bytes32 _upgradeHash,
        uint256 _timestamp
    );

    /* ============ Modifiers ============ */

    modifier timeLockUpgrade() {
        // If the time lock period is 0, then allow non-timebound upgrades.
        // This is useful for initialization of the protocol and for testing.
        if (timeLockPeriod == 0) {
            _;

            return;
        }

        // The upgrade hash is defined by the hash of the transaction call data,
        // which uniquely identifies the function as well as the passed in arguments.
        bytes32 upgradeHash = keccak256(
            abi.encodePacked(
                msg.data
            )
        );

        uint256 registrationTime = timeLockedUpgrades[upgradeHash];

        // If the upgrade hasn't been registered, register with the current time.
        if (registrationTime == 0) {
            timeLockedUpgrades[upgradeHash] = block.timestamp;

            emit UpgradeRegistered(
                upgradeHash,
                block.timestamp
            );

            return;
        }

        require(
            block.timestamp >= registrationTime.add(timeLockPeriod),
            "TimeLockUpgrade: Time lock period must have elapsed."
        );

        // Reset the timestamp to 0
        timeLockedUpgrades[upgradeHash] = 0;

        // Run the rest of the upgrades
        _;
    }

    /* ============ Function ============ */

    /**
     * Change timeLockPeriod period. Generally called after initially settings have been set up.
     *
     * @param  _timeLockPeriod   Time in seconds that upgrades need to be evaluated before execution
     */
    function setTimeLockPeriod(
        uint256 _timeLockPeriod
    )
        virtual
        external
        onlyOwner
    {
        // Only allow setting of the timeLockPeriod if the period is greater than the existing
        require(
            _timeLockPeriod > timeLockPeriod,
            "TimeLockUpgrade: New period must be greater than existing"
        );

        timeLockPeriod = _timeLockPeriod;
    }
}

File 11 of 16 : MutualUpgrade.sol
/*
    Copyright 2018 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;

/**
 * @title MutualUpgrade
 * @author Set Protocol
 *
 * The MutualUpgrade contract contains a modifier for handling mutual upgrades between two parties
 */
contract MutualUpgrade {
    /* ============ State Variables ============ */

    // Mapping of upgradable units and if upgrade has been initialized by other party
    mapping(bytes32 => bool) public mutualUpgrades;

    /* ============ Events ============ */

    event MutualUpgradeRegistered(
        bytes32 _upgradeHash
    );

    /* ============ Modifiers ============ */

    modifier mutualUpgrade(address _signerOne, address _signerTwo) {
        require(
            msg.sender == _signerOne || msg.sender == _signerTwo,
            "Must be authorized address"
        );

        address nonCaller = _getNonCaller(_signerOne, _signerTwo);

        // The upgrade hash is defined by the hash of the transaction call data and sender of msg,
        // which uniquely identifies the function, arguments, and sender.
        bytes32 expectedHash = keccak256(abi.encodePacked(msg.data, nonCaller));

        if (!mutualUpgrades[expectedHash]) {
            bytes32 newHash = keccak256(abi.encodePacked(msg.data, msg.sender));

            mutualUpgrades[newHash] = true;

            emit MutualUpgradeRegistered(newHash);

            return;
        }

        delete mutualUpgrades[expectedHash];

        // Run the rest of the upgrades
        _;
    }

    /* ============ Internal Functions ============ */

    function _getNonCaller(address _signerOne, address _signerTwo) internal view returns(address) {
        return msg.sender == _signerOne ? _signerTwo : _signerOne;
    }
}

File 12 of 16 : AddressArrayUtils.sol
/*
    Copyright 2020 Set Labs Inc.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/

pragma solidity 0.6.10;

/**
 * @title AddressArrayUtils
 * @author Set Protocol
 *
 * Utility functions to handle Address Arrays
 *
 * CHANGELOG:
 * - 4/27/21: Added validatePairsWithArray methods
 */
library AddressArrayUtils {

    /**
     * Finds the index of the first occurrence of the given element.
     * @param A The input array to search
     * @param a The value to find
     * @return Returns (index and isIn) for the first occurrence starting from index 0
     */
    function indexOf(address[] memory A, address a) internal pure returns (uint256, bool) {
        uint256 length = A.length;
        for (uint256 i = 0; i < length; i++) {
            if (A[i] == a) {
                return (i, true);
            }
        }
        return (uint256(-1), false);
    }

    /**
    * Returns true if the value is present in the list. Uses indexOf internally.
    * @param A The input array to search
    * @param a The value to find
    * @return Returns isIn for the first occurrence starting from index 0
    */
    function contains(address[] memory A, address a) internal pure returns (bool) {
        (, bool isIn) = indexOf(A, a);
        return isIn;
    }

    /**
    * Returns true if there are 2 elements that are the same in an array
    * @param A The input array to search
    * @return Returns boolean for the first occurrence of a duplicate
    */
    function hasDuplicate(address[] memory A) internal pure returns(bool) {
        require(A.length > 0, "A is empty");

        for (uint256 i = 0; i < A.length - 1; i++) {
            address current = A[i];
            for (uint256 j = i + 1; j < A.length; j++) {
                if (current == A[j]) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * @param A The input array to search
     * @param a The address to remove
     * @return Returns the array with the object removed.
     */
    function remove(address[] memory A, address a)
        internal
        pure
        returns (address[] memory)
    {
        (uint256 index, bool isIn) = indexOf(A, a);
        if (!isIn) {
            revert("Address not in array.");
        } else {
            (address[] memory _A,) = pop(A, index);
            return _A;
        }
    }

    /**
     * @param A The input array to search
     * @param a The address to remove
     */
    function removeStorage(address[] storage A, address a)
        internal
    {
        (uint256 index, bool isIn) = indexOf(A, a);
        if (!isIn) {
            revert("Address not in array.");
        } else {
            uint256 lastIndex = A.length - 1; // If the array would be empty, the previous line would throw, so no underflow here
            if (index != lastIndex) { A[index] = A[lastIndex]; }
            A.pop();
        }
    }

    /**
    * Removes specified index from array
    * @param A The input array to search
    * @param index The index to remove
    * @return Returns the new array and the removed entry
    */
    function pop(address[] memory A, uint256 index)
        internal
        pure
        returns (address[] memory, address)
    {
        uint256 length = A.length;
        require(index < A.length, "Index must be < A length");
        address[] memory newAddresses = new address[](length - 1);
        for (uint256 i = 0; i < index; i++) {
            newAddresses[i] = A[i];
        }
        for (uint256 j = index + 1; j < length; j++) {
            newAddresses[j - 1] = A[j];
        }
        return (newAddresses, A[index]);
    }

    /**
     * Returns the combination of the two arrays
     * @param A The first array
     * @param B The second array
     * @return Returns A extended by B
     */
    function extend(address[] memory A, address[] memory B) internal pure returns (address[] memory) {
        uint256 aLength = A.length;
        uint256 bLength = B.length;
        address[] memory newAddresses = new address[](aLength + bLength);
        for (uint256 i = 0; i < aLength; i++) {
            newAddresses[i] = A[i];
        }
        for (uint256 j = 0; j < bLength; j++) {
            newAddresses[aLength + j] = B[j];
        }
        return newAddresses;
    }

    /**
     * Validate that address and uint array lengths match. Validate address array is not empty
     * and contains no duplicate elements.
     *
     * @param A         Array of addresses
     * @param B         Array of uint
     */
    function validatePairsWithArray(address[] memory A, uint[] memory B) internal pure {
        require(A.length == B.length, "Array length mismatch");
        _validateLengthAndUniqueness(A);
    }

    /**
     * Validate that address and bool array lengths match. Validate address array is not empty
     * and contains no duplicate elements.
     *
     * @param A         Array of addresses
     * @param B         Array of bool
     */
    function validatePairsWithArray(address[] memory A, bool[] memory B) internal pure {
        require(A.length == B.length, "Array length mismatch");
        _validateLengthAndUniqueness(A);
    }

    /**
     * Validate that address and string array lengths match. Validate address array is not empty
     * and contains no duplicate elements.
     *
     * @param A         Array of addresses
     * @param B         Array of strings
     */
    function validatePairsWithArray(address[] memory A, string[] memory B) internal pure {
        require(A.length == B.length, "Array length mismatch");
        _validateLengthAndUniqueness(A);
    }

    /**
     * Validate that address array lengths match, and calling address array are not empty
     * and contain no duplicate elements.
     *
     * @param A         Array of addresses
     * @param B         Array of addresses
     */
    function validatePairsWithArray(address[] memory A, address[] memory B) internal pure {
        require(A.length == B.length, "Array length mismatch");
        _validateLengthAndUniqueness(A);
    }

    /**
     * Validate that address and bytes array lengths match. Validate address array is not empty
     * and contains no duplicate elements.
     *
     * @param A         Array of addresses
     * @param B         Array of bytes
     */
    function validatePairsWithArray(address[] memory A, bytes[] memory B) internal pure {
        require(A.length == B.length, "Array length mismatch");
        _validateLengthAndUniqueness(A);
    }

    /**
     * Validate address array is not empty and contains no duplicate elements.
     *
     * @param A          Array of addresses
     */
    function _validateLengthAndUniqueness(address[] memory A) internal pure {
        require(A.length > 0, "Array length must be > 0");
        require(!hasDuplicate(A), "Cannot duplicate addresses");
    }
}

File 13 of 16 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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);
}

File 14 of 16 : SignedSafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @title SignedSafeMath
 * @dev Signed math operations with safety checks that revert on error.
 */
library SignedSafeMath {
    int256 constant private _INT256_MIN = -2**255;

    /**
     * @dev Returns the multiplication of two signed integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(int256 a, int256 b) internal pure returns (int256) {
        // 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 0;
        }

        require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");

        int256 c = a * b;
        require(c / a == b, "SignedSafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two signed integers. Reverts 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(int256 a, int256 b) internal pure returns (int256) {
        require(b != 0, "SignedSafeMath: division by zero");
        require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");

        int256 c = a / b;

        return c;
    }

    /**
     * @dev Returns the subtraction of two signed integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");

        return c;
    }

    /**
     * @dev Returns the addition of two signed integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");

        return c;
    }
}

File 15 of 16 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 16 of 16 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"contract IBaseManager","name":"_manager","type":"address"},{"internalType":"contract IStreamingFeeModule","name":"_streamingFeeModule","type":"address"},{"internalType":"contract IIssuanceModule","name":"_issuanceModule","type":"address"},{"internalType":"uint256","name":"_operatorFeeSplit","type":"uint256"},{"internalType":"address","name":"_operatorFeeRecipient","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bool","name":"_status","type":"bool"}],"name":"AnyoneCallableUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_caller","type":"address"},{"indexed":false,"internalType":"bool","name":"_status","type":"bool"}],"name":"CallerStatusUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_operatorFeeRecipient","type":"address"},{"indexed":true,"internalType":"address","name":"_methodologist","type":"address"},{"indexed":false,"internalType":"uint256","name":"_operatorTake","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_methodologistTake","type":"uint256"}],"name":"FeesDistributed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"_upgradeHash","type":"bytes32"}],"name":"MutualUpgradeRegistered","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":"bytes32","name":"_upgradeHash","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"_timestamp","type":"uint256"}],"name":"UpgradeRegistered","type":"event"},{"inputs":[],"name":"accrueFeesAndDistribute","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"anyoneCallable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"callAllowList","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxManagerFee","type":"uint256"},{"internalType":"uint256","name":"_managerIssueFee","type":"uint256"},{"internalType":"uint256","name":"_managerRedeemFee","type":"uint256"},{"internalType":"address","name":"_feeRecipient","type":"address"},{"internalType":"address","name":"_managerIssuanceHook","type":"address"}],"name":"initializeIssuanceModule","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"feeRecipient","type":"address"},{"internalType":"uint256","name":"maxStreamingFeePercentage","type":"uint256"},{"internalType":"uint256","name":"streamingFeePercentage","type":"uint256"},{"internalType":"uint256","name":"lastStreamingFeeTimestamp","type":"uint256"}],"internalType":"struct IStreamingFeeModule.FeeState","name":"_settings","type":"tuple"}],"name":"initializeStreamingFeeModule","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"issuanceModule","outputs":[{"internalType":"contract IIssuanceModule","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"manager","outputs":[{"internalType":"contract IBaseManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"mutualUpgrades","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operatorFeeRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operatorFeeSplit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"uint256","name":"_timeLockPeriod","type":"uint256"}],"name":"setTimeLockPeriod","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"setToken","outputs":[{"internalType":"contract ISetToken","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"streamingFeeModule","outputs":[{"internalType":"contract IStreamingFeeModule","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"timeLockPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"timeLockedUpgrades","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_status","type":"bool"}],"name":"updateAnyoneCallable","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_callers","type":"address[]"},{"internalType":"bool[]","name":"_statuses","type":"bool[]"}],"name":"updateCallerStatus","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newFeeRecipient","type":"address"}],"name":"updateFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newFeeSplit","type":"uint256"}],"name":"updateFeeSplit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newFee","type":"uint256"}],"name":"updateIssueFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newOperatorFeeRecipient","type":"address"}],"name":"updateOperatorFeeRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newFee","type":"uint256"}],"name":"updateRedeemFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newFee","type":"uint256"}],"name":"updateStreamingFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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