Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Is this a proxy?
• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/proxy/beacon/IBeacon.sol";
import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";

/**
 * @dev This contract implements a proxy that gets the implementation address for each call from a {UpgradeableBeacon}.
 *
 * The beacon address is stored in storage slot `uint256(keccak256('eip1967.proxy.beacon')) - 1`, so that it doesn't
 * conflict with the storage layout of the implementation behind the proxy.
 *
 * _Available since v3.4._
 */
contract InitializeableBeaconProxy is Proxy {
    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 private constant _BEACON_SLOT =
        0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Initializes the proxy with `beacon`.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon. This
     * will typically be an encoded function call, and allows initializating the storage of the proxy like a Solidity
     * constructor.
     *
     * Requirements:
     *
     * - `beacon` must be a contract with the interface {IBeacon}.
     */
    function initialize(address beacon, bytes memory data) external payable {
        assert(
            _BEACON_SLOT ==
                bytes32(uint256(keccak256("eip1967.proxy.beacon")) - 1)
        );
        require(_beacon() == address(0), "Beacon: already initialized");

        _setBeacon(beacon, data);
    }

    /**
     * @dev Returns the current beacon address.
     */
    function _beacon() internal view virtual returns (address beacon) {
        bytes32 slot = _BEACON_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            beacon := sload(slot)
        }
    }

    /**
     * @dev Returns the current implementation address of the associated beacon.
     */
    function _implementation()
        internal
        view
        virtual
        override
        returns (address)
    {
        return IBeacon(_beacon()).implementation();
    }

    /**
     * @dev Changes the proxy to use a new beacon.
     *
     * If `data` is nonempty, it's used as data in a delegate call to the implementation returned by the beacon.
     *
     * Requirements:
     *
     * - `beacon` must be a contract.
     * - The implementation returned by `beacon` must be a contract.
     */
    function _setBeacon(address beacon, bytes memory data) internal virtual {
        bytes32 slot = _BEACON_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, beacon)
        }

        if (data.length > 0) {
            Address.functionDelegateCall(
                _implementation(),
                data,
                "BeaconProxy: function call failed"
            );
        }
    }

    receive() external payable override {
        // Needed to receive ETH without data
        // OZ Proxy contract calls the _fallback() on receive and tries to delegatecall which fails
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // 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);
            }
        }
    }
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"stateMutability":"payable","type":"fallback"},{"inputs":[{"internalType":"address","name":"beacon","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"initialize","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

0x6080604052600436106100225760003560e01c8063d1f578941461003357610029565b3661002957005b610031610046565b005b610031610041366004610358565b610058565b61005661005161012e565b6101bb565b565b61008360017fa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d51610466565b6000805160206104e4833981519152146100ad57634e487b7160e01b600052600160045260246000fd5b60006100c56000805160206104e48339815191525490565b6001600160a01b0316146101205760405162461bcd60e51b815260206004820152601b60248201527f426561636f6e3a20616c726561647920696e697469616c697a6564000000000060448201526064015b60405180910390fd5b61012a82826101e4565b5050565b60006101466000805160206104e48339815191525490565b6001600160a01b0316635c60da1b6040518163ffffffff1660e01b815260040160206040518083038186803b15801561017e57600080fd5b505afa158015610192573d6000803e3d6000fd5b505050506040513d601f19601f820116820180604052508101906101b6919061033c565b905090565b3660008037600080366000845af43d6000803e8080156101da573d6000f35b3d6000fd5b505050565b6000805160206104e48339815191528281558151156101df5761022761020861012e565b836040518060600160405280602181526020016105046021913961022d565b50505050565b6060833b61028c5760405162461bcd60e51b815260206004820152602660248201527f416464726573733a2064656c65676174652063616c6c20746f206e6f6e2d636f6044820152651b9d1c9858dd60d21b6064820152608401610117565b600080856001600160a01b0316856040516102a79190610417565b600060405180830381855af49150503d80600081146102e2576040519150601f19603f3d011682016040523d82523d6000602084013e6102e7565b606091505b50915091506102f7828286610303565b925050505b9392505050565b606083156103125750816102fc565b8251156103225782518084602001fd5b8160405162461bcd60e51b81526004016101179190610433565b60006020828403121561034d578081fd5b81516102fc816104cb565b6000806040838503121561036a578081fd5b8235610375816104cb565b9150602083013567ffffffffffffffff80821115610391578283fd5b818501915085601f8301126103a4578283fd5b8135818111156103b6576103b66104b5565b604051601f8201601f19908116603f011681019083821181831017156103de576103de6104b5565b816040528281528860208487010111156103f6578586fd5b82602086016020830137856020848301015280955050505050509250929050565b60008251610429818460208701610489565b9190910192915050565b6000602082528251806020840152610452816040850160208701610489565b601f01601f19169190910160400192915050565b60008282101561048457634e487b7160e01b81526011600452602481fd5b500390565b60005b838110156104a457818101518382015260200161048c565b838111156102275750506000910152565b634e487b7160e01b600052604160045260246000fd5b6001600160a01b03811681146104e057600080fd5b5056fea3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50426561636f6e50726f78793a2066756e6374696f6e2063616c6c206661696c6564a264697066735822122061c5354f9133109170529a4ad9dc8cb2f08659e45701d7c18c3e2c3027e7335364736f6c63430008030033