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// SPDX-License-Identifier: GPL-2.0-or-later

pragma solidity ^0.8.0;

import {BeaconProxy} from "./BeaconProxy.sol";
import {MetaProxyDeployer} from "./MetaProxyDeployer.sol";

/// @title IComponent
/// @notice Minimal interface which must be implemented by the contract deployed by the factory
interface IComponent {
    /// @notice Function replacing the constructor in proxied contracts
    /// @param creator The new contract's creator address
    function initialize(address creator) external;
}

/// @title GenericFactory
/// @custom:security-contact [email protected]
/// @author Euler Labs (https://www.eulerlabs.com/)
/// @notice The factory allows permissionless creation of upgradeable or non-upgradeable proxy contracts and serves as a
/// beacon for the upgradeable ones
contract GenericFactory is MetaProxyDeployer {
    // Constants

    uint256 internal constant REENTRANCYLOCK__UNLOCKED = 1;
    uint256 internal constant REENTRANCYLOCK__LOCKED = 2;

    // State

    /// @title ProxyConfig
    /// @notice This struct is used to store the configuration of a proxy deployed by the factory
    struct ProxyConfig {
        // If true, proxy is an instance of the BeaconProxy
        bool upgradeable;
        // Address of the implementation contract
        // May be an out-of-date value, if upgradeable (handled by getProxyConfig)
        address implementation;
        // The metadata attached to every call passing through the proxy
        bytes trailingData;
    }

    uint256 private reentrancyLock;

    /// @notice Address of the account authorized to upgrade the implementation contract
    address public upgradeAdmin;
    /// @notice Address of the implementation contract, which the deployed proxies will delegate-call to
    /// @dev The contract must implement the `IComponent` interface
    address public implementation;
    /// @notice A lookup for configurations of the proxy contracts deployed by the factory
    mapping(address proxy => ProxyConfig) internal proxyLookup;
    /// @notice An array of addresses of all the proxies deployed by the factory
    address[] public proxyList;

    // Events

    /// @notice The factory is created
    event Genesis();

    /// @notice A new proxy is created
    /// @param proxy Address of the new proxy
    /// @param upgradeable If true, proxy is an instance of the BeaconProxy. If false, the proxy is a minimal meta proxy
    /// @param implementation Address of the implementation contract, at the time the proxy was deployed
    /// @param trailingData The metadata that will be attached to every call passing through the proxy
    event ProxyCreated(address indexed proxy, bool upgradeable, address implementation, bytes trailingData);

    /// @notice Set a new implementation contract. All the BeaconProxies are upgraded to the new logic
    /// @param newImplementation Address of the new implementation contract
    event SetImplementation(address indexed newImplementation);

    /// @notice Set a new upgrade admin
    /// @param newUpgradeAdmin Address of the new admin
    event SetUpgradeAdmin(address indexed newUpgradeAdmin);

    // Errors

    error E_Reentrancy();
    error E_Unauthorized();
    error E_Implementation();
    error E_BadAddress();
    error E_BadQuery();

    // Modifiers

    modifier nonReentrant() {
        if (reentrancyLock == REENTRANCYLOCK__LOCKED) revert E_Reentrancy();

        reentrancyLock = REENTRANCYLOCK__LOCKED;
        _;
        reentrancyLock = REENTRANCYLOCK__UNLOCKED;
    }

    modifier adminOnly() {
        if (msg.sender != upgradeAdmin) revert E_Unauthorized();
        _;
    }

    constructor(address admin) {
        emit Genesis();

        if (admin == address(0)) revert E_BadAddress();

        reentrancyLock = REENTRANCYLOCK__UNLOCKED;

        upgradeAdmin = admin;

        emit SetUpgradeAdmin(admin);
    }

    /// @notice A permissionless funtion to deploy new proxies
    /// @param desiredImplementation Address of the implementation contract expected to be registered in the factory
    /// during proxy creation
    /// @param upgradeable If true, the proxy will be an instance of the BeaconProxy. If false, a minimal meta proxy
    /// will be deployed
    /// @param trailingData Metadata to be attached to every call passing through the new proxy
    /// @return The address of the new proxy
    /// @dev The desired implementation serves as a protection against (unintentional) front-running of upgrades
    function createProxy(address desiredImplementation, bool upgradeable, bytes memory trailingData)
        external
        nonReentrant
        returns (address)
    {
        address _implementation = implementation;
        if (desiredImplementation == address(0)) desiredImplementation = _implementation;

        if (desiredImplementation == address(0) || desiredImplementation != _implementation) revert E_Implementation();

        // The provided trailing data is prefixed with 4 zero bytes to avoid potential selector clashing in case the
        // proxy is called with empty calldata.
        bytes memory prefixTrailingData = abi.encodePacked(bytes4(0), trailingData);
        address proxy;

        if (upgradeable) {
            proxy = address(new BeaconProxy(prefixTrailingData));
        } else {
            proxy = deployMetaProxy(desiredImplementation, prefixTrailingData);
        }

        proxyLookup[proxy] =
            ProxyConfig({upgradeable: upgradeable, implementation: desiredImplementation, trailingData: trailingData});

        proxyList.push(proxy);

        IComponent(proxy).initialize(msg.sender);

        emit ProxyCreated(proxy, upgradeable, desiredImplementation, trailingData);

        return proxy;
    }

    // EVault beacon upgrade

    /// @notice Set a new implementation contract
    /// @param newImplementation Address of the new implementation contract
    /// @dev Upgrades all existing BeaconProxies to the new logic immediately
    function setImplementation(address newImplementation) external nonReentrant adminOnly {
        if (newImplementation.code.length == 0) revert E_BadAddress();
        implementation = newImplementation;
        emit SetImplementation(newImplementation);
    }

    // Admin role

    /// @notice Transfer admin rights to a new address
    /// @param newUpgradeAdmin Address of the new admin
    /// @dev For creating non upgradeable factories, or to finalize all upgradeable proxies to current implementation,
    /// @dev set the admin to zero address.
    /// @dev If setting to address zero, make sure the implementation contract is already set
    function setUpgradeAdmin(address newUpgradeAdmin) external nonReentrant adminOnly {
        upgradeAdmin = newUpgradeAdmin;
        emit SetUpgradeAdmin(newUpgradeAdmin);
    }

    // Proxy getters

    /// @notice Get current proxy configuration
    /// @param proxy Address of the proxy to query
    /// @return config The proxy's configuration, including current implementation
    function getProxyConfig(address proxy) external view returns (ProxyConfig memory config) {
        config = proxyLookup[proxy];
        if (config.upgradeable) config.implementation = implementation;
    }

    /// @notice Check if an address is a proxy deployed with this factory
    /// @param proxy Address to check
    /// @return True if the address is a proxy
    function isProxy(address proxy) external view returns (bool) {
        return proxyLookup[proxy].implementation != address(0);
    }

    /// @notice Fetch the length of the deployed proxies list
    /// @return The length of the proxy list array
    function getProxyListLength() external view returns (uint256) {
        return proxyList.length;
    }

    /// @notice Get a slice of the deployed proxies array
    /// @param start Start index of the slice
    /// @param end End index of the slice
    /// @return list An array containing the slice of the proxy list
    function getProxyListSlice(uint256 start, uint256 end) external view returns (address[] memory list) {
        if (end == type(uint256).max) end = proxyList.length;
        if (end < start || end > proxyList.length) revert E_BadQuery();

        list = new address[](end - start);
        for (uint256 i; i < end - start; ++i) {
            list[i] = proxyList[start + i];
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later

pragma solidity ^0.8.0;

/// @title BeaconProxy
/// @custom:security-contact [email protected]
/// @author Euler Labs (https://www.eulerlabs.com/)
/// @notice A proxy contract, forwarding all calls to an implementation contract, fetched from a beacon
/// @dev The proxy attaches up to 128 bytes of metadata to the delegated call data.
contract BeaconProxy {
    // ERC-1967 beacon address slot. bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)
    bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
    // Beacon implementation() selector
    bytes32 internal constant IMPLEMENTATION_SELECTOR =
        0x5c60da1b00000000000000000000000000000000000000000000000000000000;
    // Max trailing data length, 4 immutable slots
    uint256 internal constant MAX_TRAILING_DATA_LENGTH = 128;

    address internal immutable beacon;
    uint256 internal immutable metadataLength;
    bytes32 internal immutable metadata0;
    bytes32 internal immutable metadata1;
    bytes32 internal immutable metadata2;
    bytes32 internal immutable metadata3;

    event Genesis();

    constructor(bytes memory trailingData) {
        emit Genesis();

        require(trailingData.length <= MAX_TRAILING_DATA_LENGTH, "trailing data too long");

        // Beacon is always the proxy creator; store it in immutable
        beacon = msg.sender;

        // Store the beacon address in ERC-1967 slot for compatibility with block explorers
        assembly {
            sstore(BEACON_SLOT, caller())
        }

        // Record length as immutable
        metadataLength = trailingData.length;

        // Pad length with uninitialized memory so the decode will succeed
        assembly {
            mstore(trailingData, MAX_TRAILING_DATA_LENGTH)
        }
        (metadata0, metadata1, metadata2, metadata3) = abi.decode(trailingData, (bytes32, bytes32, bytes32, bytes32));
    }

    fallback() external payable {
        address beacon_ = beacon;
        uint256 metadataLength_ = metadataLength;
        bytes32 metadata0_ = metadata0;
        bytes32 metadata1_ = metadata1;
        bytes32 metadata2_ = metadata2;
        bytes32 metadata3_ = metadata3;

        assembly {
            // Fetch implementation address from the beacon
            mstore(0, IMPLEMENTATION_SELECTOR)
            // Implementation call is trusted not to revert and to return an address
            let result := staticcall(gas(), beacon_, 0, 4, 0, 32)
            let implementation := mload(0)

            // delegatecall to the implementation with trailing metadata
            calldatacopy(0, 0, calldatasize())
            mstore(calldatasize(), metadata0_)
            mstore(add(32, calldatasize()), metadata1_)
            mstore(add(64, calldatasize()), metadata2_)
            mstore(add(96, calldatasize()), metadata3_)
            result := delegatecall(gas(), implementation, 0, add(metadataLength_, calldatasize()), 0, 0)
            returndatacopy(0, 0, returndatasize())

            switch result
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later

pragma solidity ^0.8.0;

/// @title MetaProxyDeployer
/// @custom:security-contact [email protected]
/// @author Euler Labs (https://www.eulerlabs.com/)
/// @notice Contract for deploying minimal proxies with metadata, based on EIP-3448.
/// @dev The metadata of the proxies does not include the data length as defined by EIP-3448, saving gas at a cost of
/// supporting variable size data.
contract MetaProxyDeployer {
    error E_DeploymentFailed();

    // Meta proxy bytecode from EIP-3488 https://eips.ethereum.org/EIPS/eip-3448
    bytes constant BYTECODE_HEAD = hex"600b380380600b3d393df3363d3d373d3d3d3d60368038038091363936013d73";
    bytes constant BYTECODE_TAIL = hex"5af43d3d93803e603457fd5bf3";

    /// @dev Creates a proxy for `targetContract` with metadata from `metadata`.
    /// @return addr A non-zero address if successful.
    function deployMetaProxy(address targetContract, bytes memory metadata) internal returns (address addr) {
        bytes memory code = abi.encodePacked(BYTECODE_HEAD, targetContract, BYTECODE_TAIL, metadata);

        assembly ("memory-safe") {
            addr := create(0, add(code, 32), mload(code))
        }

        if (addr == address(0)) revert E_DeploymentFailed();
    }
}

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}

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[{"inputs":[{"internalType":"address","name":"admin","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"E_BadAddress","type":"error"},{"inputs":[],"name":"E_BadQuery","type":"error"},{"inputs":[],"name":"E_DeploymentFailed","type":"error"},{"inputs":[],"name":"E_Implementation","type":"error"},{"inputs":[],"name":"E_Reentrancy","type":"error"},{"inputs":[],"name":"E_Unauthorized","type":"error"},{"anonymous":false,"inputs":[],"name":"Genesis","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"proxy","type":"address"},{"indexed":false,"internalType":"bool","name":"upgradeable","type":"bool"},{"indexed":false,"internalType":"address","name":"implementation","type":"address"},{"indexed":false,"internalType":"bytes","name":"trailingData","type":"bytes"}],"name":"ProxyCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newImplementation","type":"address"}],"name":"SetImplementation","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newUpgradeAdmin","type":"address"}],"name":"SetUpgradeAdmin","type":"event"},{"inputs":[{"internalType":"address","name":"desiredImplementation","type":"address"},{"internalType":"bool","name":"upgradeable","type":"bool"},{"internalType":"bytes","name":"trailingData","type":"bytes"}],"name":"createProxy","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"proxy","type":"address"}],"name":"getProxyConfig","outputs":[{"components":[{"internalType":"bool","name":"upgradeable","type":"bool"},{"internalType":"address","name":"implementation","type":"address"},{"internalType":"bytes","name":"trailingData","type":"bytes"}],"internalType":"struct GenericFactory.ProxyConfig","name":"config","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getProxyListLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"}],"name":"getProxyListSlice","outputs":[{"internalType":"address[]","name":"list","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"proxy","type":"address"}],"name":"isProxy","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"proxyList","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"setImplementation","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newUpgradeAdmin","type":"address"}],"name":"setUpgradeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"upgradeAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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000000000000000000000000aee4e2e8024c1b58f4686d1cb1646a6d5755f05c

-----Decoded View---------------
Arg [0] : admin (address): 0xAeE4e2E8024C1B58f4686d1CB1646a6d5755F05C

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000aee4e2e8024c1b58f4686d1cb1646a6d5755f05c