// SPDX-License-Identifier: MIT

/***
 *      ______             _______   __                                             
 *     /      \           |       \ |  \                                            
 *    |  $$$$$$\ __    __ | $$$$$$$\| $$  ______    _______  ______ ____    ______  
 *    | $$$\| $$|  \  /  \| $$__/ $$| $$ |      \  /       \|      \    \  |      \ 
 *    | $$$$\ $$ \$$\/  $$| $$    $$| $$  \$$$$$$\|  $$$$$$$| $$$$$$\$$$$\  \$$$$$$\
 *    | $$\$$\$$  >$$  $$ | $$$$$$$ | $$ /      $$ \$$    \ | $$ | $$ | $$ /      $$
 *    | $$_\$$$$ /  $$$$\ | $$      | $$|  $$$$$$$ _\$$$$$$\| $$ | $$ | $$|  $$$$$$$
 *     \$$  \$$$|  $$ \$$\| $$      | $$ \$$    $$|       $$| $$ | $$ | $$ \$$    $$
 *      \$$$$$$  \$$   \$$ \$$       \$$  \$$$$$$$ \$$$$$$$  \$$  \$$  \$$  \$$$$$$$
 *                                                                                  
 *                                                                                  
 *                                                                                  
 */

pragma solidity ^0.8.4;

import "./Proxy.sol";

interface ERC165 {
    function supportsInterface(bytes4 id) external view returns (bool);
}

///@notice Proxy implementing EIP173 for ownership management
contract EIP173Proxy is Proxy {
    // ////////////////////////// EVENTS ///////////////////////////////////////////////////////////////////////

    event ProxyAdminTransferred(
        address indexed previousAdmin,
        address indexed newAdmin
    );

    // /////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////////////

    constructor(
        address implementationAddress,
        address adminAddress,
        bytes memory data
    ) payable {
        _setImplementation(implementationAddress, data);
        _setProxyAdmin(adminAddress);
    }

    // ///////////////////// EXTERNAL ///////////////////////////////////////////////////////////////////////////

    function proxyAdmin() external view returns (address) {
        return _proxyAdmin();
    }

    function supportsInterface(bytes4 id) external view returns (bool) {
        if (id == 0x01ffc9a7 || id == 0x7f5828d0) {
            return true;
        }
        if (id == 0xFFFFFFFF) {
            return false;
        }

        ERC165 implementation;
        // solhint-disable-next-line security/no-inline-assembly
        assembly {
            implementation := sload(
                0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc
            )
        }

        // Technically this is not standard compliant as ERC-165 require 30,000 gas which that call cannot ensure
        // because it is itself inside `supportsInterface` that might only get 30,000 gas.
        // In practise this is unlikely to be an issue.
        try implementation.supportsInterface(id) returns (bool support) {
            return support;
        } catch {
            return false;
        }
    }

    function transferProxyAdmin(address newAdmin) external onlyProxyAdmin {
        _setProxyAdmin(newAdmin);
    }

    function upgradeTo(address newImplementation) external onlyProxyAdmin {
        _setImplementation(newImplementation, "");
    }

    function upgradeToAndCall(address newImplementation, bytes calldata data)
        external
        payable
        onlyProxyAdmin
    {
        _setImplementation(newImplementation, data);
    }

    // /////////////////////// MODIFIERS ////////////////////////////////////////////////////////////////////////

    modifier onlyProxyAdmin() {
        require(msg.sender == _proxyAdmin(), "NOT_AUTHORIZED");
        _;
    }

    // ///////////////////////// INTERNAL //////////////////////////////////////////////////////////////////////

    function _proxyAdmin() internal view returns (address adminAddress) {
        // solhint-disable-next-line security/no-inline-assembly
        assembly {
            adminAddress := sload(
                0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103
            )
        }
    }

    function _setProxyAdmin(address newAdmin) internal {
        address previousAdmin = _proxyAdmin();
        // solhint-disable-next-line security/no-inline-assembly
        assembly {
            sstore(
                0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103,
                newAdmin
            )
        }
        emit ProxyAdminTransferred(previousAdmin, newAdmin);
    }
}

// SPDX-License-Identifier: MIT

/***
 *      ______             _______   __                                             
 *     /      \           |       \ |  \                                            
 *    |  $$$$$$\ __    __ | $$$$$$$\| $$  ______    _______  ______ ____    ______  
 *    | $$$\| $$|  \  /  \| $$__/ $$| $$ |      \  /       \|      \    \  |      \ 
 *    | $$$$\ $$ \$$\/  $$| $$    $$| $$  \$$$$$$\|  $$$$$$$| $$$$$$\$$$$\  \$$$$$$\
 *    | $$\$$\$$  >$$  $$ | $$$$$$$ | $$ /      $$ \$$    \ | $$ | $$ | $$ /      $$
 *    | $$_\$$$$ /  $$$$\ | $$      | $$|  $$$$$$$ _\$$$$$$\| $$ | $$ | $$|  $$$$$$$
 *     \$$  \$$$|  $$ \$$\| $$      | $$ \$$    $$|       $$| $$ | $$ | $$ \$$    $$
 *      \$$$$$$  \$$   \$$ \$$       \$$  \$$$$$$$ \$$$$$$$  \$$  \$$  \$$  \$$$$$$$
 *                                                                                  
 *                                                                                  
 *                                                                                  
 */

pragma solidity ^0.8.4;

// EIP-1967
abstract contract Proxy {
    // /////////////////////// EVENTS ///////////////////////////////////////////////////////////////////////////

    event ProxyImplementationUpdated(
        address indexed previousImplementation,
        address indexed newImplementation
    );

    // ///////////////////// EXTERNAL ///////////////////////////////////////////////////////////////////////////

    // prettier-ignore
    receive() external payable virtual {
        revert("ETHER_REJECTED"); // explicit reject by default
    }

    fallback() external payable {
        _fallback();
    }

    // ///////////////////////// INTERNAL //////////////////////////////////////////////////////////////////////

    function _fallback() internal {
        // solhint-disable-next-line security/no-inline-assembly
        assembly {
            let implementationAddress := sload(
                0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc
            )
            calldatacopy(0x0, 0x0, calldatasize())
            let success := delegatecall(
                gas(),
                implementationAddress,
                0x0,
                calldatasize(),
                0,
                0
            )
            let retSz := returndatasize()
            returndatacopy(0, 0, retSz)
            switch success
                case 0 {
                    revert(0, retSz)
                }
                default {
                    return(0, retSz)
                }
        }
    }

    function _setImplementation(address newImplementation, bytes memory data)
        internal
    {
        address previousImplementation;
        // solhint-disable-next-line security/no-inline-assembly
        assembly {
            previousImplementation := sload(
                0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc
            )
        }

        // solhint-disable-next-line security/no-inline-assembly
        assembly {
            sstore(
                0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc,
                newImplementation
            )
        }

        emit ProxyImplementationUpdated(
            previousImplementation,
            newImplementation
        );

        if (data.length > 0) {
            (bool success, ) = newImplementation.delegatecall(data);
            if (!success) {
                assembly {
                    // This assembly ensure the revert contains the exact string data
                    let returnDataSize := returndatasize()
                    returndatacopy(0, 0, returnDataSize)
                    revert(0, returnDataSize)
                }
            }
        }
    }
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"implementationAddress","type":"address"},{"internalType":"address","name":"adminAddress","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":true,"internalType":"address","name":"newAdmin","type":"address"}],"name":"ProxyAdminTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousImplementation","type":"address"},{"indexed":true,"internalType":"address","name":"newImplementation","type":"address"}],"name":"ProxyImplementationUpdated","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"proxyAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"id","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"transferProxyAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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