Transaction Hash:
Block:
19547693 at Mar-30-2024 03:35:47 PM +UTC
Transaction Fee:
0.004173432 ETH
$7.84
Gas Used:
122,748 Gas / 34 Gwei
Emitted Events:
102 |
ERC1967Proxy.0xbf5630c2adfa5e47b882a9ead657ffc6a22ce010513a3efac7245066bcad17dd( 0xbf5630c2adfa5e47b882a9ead657ffc6a22ce010513a3efac7245066bcad17dd, 00000000000000000000000000000000000000000000000000000000000027ea, 0000000000000000000000000000000000000000000000000000000000000040, 00000000000000000000000083bc7394738a7a084081af22eec0051908c0055c, 0000000000000000000000000000000000000000000000000000000000000000, 000000000000000000000000e563b9d0533fec743e0ff867b7f3d1460f88798c, 00000000000000000000000000000000000000000000000000000000000027ea, 000000000000000000000000e563b9d0533fec743e0ff867b7f3d1460f88798c, 000000000000000000000000000000000000000000000000037bbb2b8e9f8000, 0000000000000000000000000000000000000000000000000000000000000160, 00000000000000000000000000000000000000000000000000000000000a9a31, 0000000000000000000000000000000000000000000000000000000000000320, 0000000000000000000000000000000000000000000000000000000000000180, 000000000000000000000000e563b9d0533fec743e0ff867b7f3d1460f88798c, 0000000000000000000000000000000000000000000000000000000000000000, 0000000000000000000000000000000000000000000000000000000000000000 )
|
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x5fD9F732...b93e015Cf | (zkLink Nova: zkLink contract) | 3,643.133807672361255042 Eth | 3,643.385687794161486653 Eth | 0.251880121800231611 | |
0x95222290...5CC4BAfe5
Miner
| (beaverbuild) | 8.052485931912828988 Eth | 8.053138228117594 Eth | 0.000652296204765012 | |
0xe563b9d0...60f88798c |
0.296948782454385285 Eth
Nonce: 4
|
0.040895228654153674 Eth
Nonce: 5
| 0.256053553800231611 |
Execution Trace
ETH 0.251880121800231611
ERC1967Proxy.eb672419( )
ETH 0.251880121800231611
ZkLink.requestL2Transaction( _contractL2=0xe563b9d0533Fec743E0fF867B7F3D1460f88798c, _l2Value=251000000000000000, _calldata=0x, _l2GasLimit=694833, _l2GasPerPubdataByteLimit=800, _factoryDeps=[], _refundRecipient=0xe563b9d0533Fec743E0fF867B7F3D1460f88798c ) => ( canonicalTxHash=39868B5C944A701304D62DA3462F9E9DD5CB20BAAAEDF373FA1322AAF4A97030 )
ERC1967Proxy.STATICCALL( )
-
EthereumGateway.DELEGATECALL( )
-
File 1 of 4: ERC1967Proxy
File 2 of 4: ZkLink
File 3 of 4: ERC1967Proxy
File 4 of 4: EthereumGateway
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../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. * * The initial owner is set to the address provided by the deployer. 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; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(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 { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1967.sol) pragma solidity ^0.8.20; /** * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC. */ interface IERC1967 { /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/BeaconProxy.sol) pragma solidity ^0.8.20; import {IBeacon} from "./IBeacon.sol"; import {Proxy} from "../Proxy.sol"; import {ERC1967Utils} from "../ERC1967/ERC1967Utils.sol"; /** * @dev This contract implements a proxy that gets the implementation address for each call from an {UpgradeableBeacon}. * * The beacon address can only be set once during construction, and cannot be changed afterwards. It is stored in an * immutable variable to avoid unnecessary storage reads, and also in the beacon storage slot specified by * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] so that it can be accessed externally. * * CAUTION: Since the beacon address can never be changed, you must ensure that you either control the beacon, or trust * the beacon to not upgrade the implementation maliciously. * * IMPORTANT: Do not use the implementation logic to modify the beacon storage slot. Doing so would leave the proxy in * an inconsistent state where the beacon storage slot does not match the beacon address. */ contract BeaconProxy is Proxy { // An immutable address for the beacon to avoid unnecessary SLOADs before each delegate call. address private immutable _beacon; /** * @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 initializing the storage of the proxy like a Solidity * constructor. * * Requirements: * * - `beacon` must be a contract with the interface {IBeacon}. * - If `data` is empty, `msg.value` must be zero. */ constructor(address beacon, bytes memory data) payable { ERC1967Utils.upgradeBeaconToAndCall(beacon, data); _beacon = beacon; } /** * @dev Returns the current implementation address of the associated beacon. */ function _implementation() internal view virtual override returns (address) { return IBeacon(_getBeacon()).implementation(); } /** * @dev Returns the beacon. */ function _getBeacon() internal view virtual returns (address) { return _beacon; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.20; /** * @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. * * {UpgradeableBeacon} will check that this address is a contract. */ function implementation() external view returns (address); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/UpgradeableBeacon.sol) pragma solidity ^0.8.20; import {IBeacon} from "./IBeacon.sol"; import {Ownable} from "../../access/Ownable.sol"; /** * @dev This contract is used in conjunction with one or more instances of {BeaconProxy} to determine their * implementation contract, which is where they will delegate all function calls. * * An owner is able to change the implementation the beacon points to, thus upgrading the proxies that use this beacon. */ contract UpgradeableBeacon is IBeacon, Ownable { address private _implementation; /** * @dev The `implementation` of the beacon is invalid. */ error BeaconInvalidImplementation(address implementation); /** * @dev Emitted when the implementation returned by the beacon is changed. */ event Upgraded(address indexed implementation); /** * @dev Sets the address of the initial implementation, and the initial owner who can upgrade the beacon. */ constructor(address implementation_, address initialOwner) Ownable(initialOwner) { _setImplementation(implementation_); } /** * @dev Returns the current implementation address. */ function implementation() public view virtual returns (address) { return _implementation; } /** * @dev Upgrades the beacon to a new implementation. * * Emits an {Upgraded} event. * * Requirements: * * - msg.sender must be the owner of the contract. * - `newImplementation` must be a contract. */ function upgradeTo(address newImplementation) public virtual onlyOwner { _setImplementation(newImplementation); } /** * @dev Sets the implementation contract address for this beacon * * Requirements: * * - `newImplementation` must be a contract. */ function _setImplementation(address newImplementation) private { if (newImplementation.code.length == 0) { revert BeaconInvalidImplementation(newImplementation); } _implementation = newImplementation; emit Upgraded(newImplementation); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Proxy.sol) pragma solidity ^0.8.20; import {Proxy} from "../Proxy.sol"; import {ERC1967Utils} from "./ERC1967Utils.sol"; /** * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an * implementation address that can be changed. This address is stored in storage in the location specified by * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the * implementation behind the proxy. */ contract ERC1967Proxy is Proxy { /** * @dev Initializes the upgradeable proxy with an initial implementation specified by `implementation`. * * If `_data` is nonempty, it's used as data in a delegate call to `implementation`. This will typically be an * encoded function call, and allows initializing the storage of the proxy like a Solidity constructor. * * Requirements: * * - If `data` is empty, `msg.value` must be zero. */ constructor(address implementation, bytes memory _data) payable { ERC1967Utils.upgradeToAndCall(implementation, _data); } /** * @dev Returns the current implementation address. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc` */ function _implementation() internal view virtual override returns (address) { return ERC1967Utils.getImplementation(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Utils.sol) pragma solidity ^0.8.20; import {IBeacon} from "../beacon/IBeacon.sol"; import {Address} from "../../utils/Address.sol"; import {StorageSlot} from "../../utils/StorageSlot.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. */ library ERC1967Utils { // We re-declare ERC-1967 events here because they can't be used directly from IERC1967. // This will be fixed in Solidity 0.8.21. At that point we should remove these events. /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev The `implementation` of the proxy is invalid. */ error ERC1967InvalidImplementation(address implementation); /** * @dev The `admin` of the proxy is invalid. */ error ERC1967InvalidAdmin(address admin); /** * @dev The `beacon` of the proxy is invalid. */ error ERC1967InvalidBeacon(address beacon); /** * @dev An upgrade function sees `msg.value > 0` that may be lost. */ error ERC1967NonPayable(); /** * @dev Returns the current implementation address. */ function getImplementation() internal view returns (address) { return StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { if (newImplementation.code.length == 0) { revert ERC1967InvalidImplementation(newImplementation); } StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Performs implementation upgrade with additional setup call if data is nonempty. * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected * to avoid stuck value in the contract. * * Emits an {IERC1967-Upgraded} event. */ function upgradeToAndCall(address newImplementation, bytes memory data) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); if (data.length > 0) { Address.functionDelegateCall(newImplementation, data); } else { _checkNonPayable(); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Returns the current admin. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103` */ function getAdmin() internal view returns (address) { return StorageSlot.getAddressSlot(ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { if (newAdmin == address(0)) { revert ERC1967InvalidAdmin(address(0)); } StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {IERC1967-AdminChanged} event. */ function changeAdmin(address newAdmin) internal { emit AdminChanged(getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is the keccak-256 hash of "eip1967.proxy.beacon" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Returns the current beacon. */ function getBeacon() internal view returns (address) { return StorageSlot.getAddressSlot(BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { if (newBeacon.code.length == 0) { revert ERC1967InvalidBeacon(newBeacon); } StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon; address beaconImplementation = IBeacon(newBeacon).implementation(); if (beaconImplementation.code.length == 0) { revert ERC1967InvalidImplementation(beaconImplementation); } } /** * @dev Change the beacon and trigger a setup call if data is nonempty. * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected * to avoid stuck value in the contract. * * Emits an {IERC1967-BeaconUpgraded} event. * * CAUTION: Invoking this function has no effect on an instance of {BeaconProxy} since v5, since * it uses an immutable beacon without looking at the value of the ERC-1967 beacon slot for * efficiency. */ function upgradeBeaconToAndCall(address newBeacon, bytes memory data) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0) { Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data); } else { _checkNonPayable(); } } /** * @dev Reverts if `msg.value` is not zero. It can be used to avoid `msg.value` stuck in the contract * if an upgrade doesn't perform an initialization call. */ function _checkNonPayable() private { if (msg.value > 0) { revert ERC1967NonPayable(); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/Proxy.sol) pragma solidity ^0.8.20; /** * @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 internal call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { 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 overridden 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 internal call site, it will return directly to the external caller. */ function _fallback() internal virtual { _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(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/transparent/ProxyAdmin.sol) pragma solidity ^0.8.20; import {ITransparentUpgradeableProxy} from "./TransparentUpgradeableProxy.sol"; import {Ownable} from "../../access/Ownable.sol"; /** * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}. */ contract ProxyAdmin is Ownable { /** * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgrade(address)` * and `upgradeAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called, * while `upgradeAndCall` will invoke the `receive` function if the second argument is the empty byte string. * If the getter returns `"5.0.0"`, only `upgradeAndCall(address,bytes)` is present, and the second argument must * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function * during an upgrade. */ string public constant UPGRADE_INTERFACE_VERSION = "5.0.0"; /** * @dev Sets the initial owner who can perform upgrades. */ constructor(address initialOwner) Ownable(initialOwner) {} /** * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. * See {TransparentUpgradeableProxy-_dispatchUpgradeToAndCall}. * * Requirements: * * - This contract must be the admin of `proxy`. * - If `data` is empty, `msg.value` must be zero. */ function upgradeAndCall( ITransparentUpgradeableProxy proxy, address implementation, bytes memory data ) public payable virtual onlyOwner { proxy.upgradeToAndCall{value: msg.value}(implementation, data); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/transparent/TransparentUpgradeableProxy.sol) pragma solidity ^0.8.20; import {ERC1967Utils} from "../ERC1967/ERC1967Utils.sol"; import {ERC1967Proxy} from "../ERC1967/ERC1967Proxy.sol"; import {IERC1967} from "../../interfaces/IERC1967.sol"; import {ProxyAdmin} from "./ProxyAdmin.sol"; /** * @dev Interface for {TransparentUpgradeableProxy}. In order to implement transparency, {TransparentUpgradeableProxy} * does not implement this interface directly, and its upgradeability mechanism is implemented by an internal dispatch * mechanism. The compiler is unaware that these functions are implemented by {TransparentUpgradeableProxy} and will not * include them in the ABI so this interface must be used to interact with it. */ interface ITransparentUpgradeableProxy is IERC1967 { function upgradeToAndCall(address, bytes calldata) external payable; } /** * @dev This contract implements a proxy that is upgradeable through an associated {ProxyAdmin} instance. * * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector * clashing], which can potentially be used in an attack, this contract uses the * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two * things that go hand in hand: * * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if * that call matches the {ITransparentUpgradeableProxy-upgradeToAndCall} function exposed by the proxy itself. * 2. If the admin calls the proxy, it can call the `upgradeToAndCall` function but any other call won't be forwarded to * the implementation. If the admin tries to call a function on the implementation it will fail with an error indicating * the proxy admin cannot fallback to the target implementation. * * These properties mean that the admin account can only be used for upgrading the proxy, so it's best if it's a * dedicated account that is not used for anything else. This will avoid headaches due to sudden errors when trying to * call a function from the proxy implementation. For this reason, the proxy deploys an instance of {ProxyAdmin} and * allows upgrades only if they come through it. You should think of the `ProxyAdmin` instance as the administrative * interface of the proxy, including the ability to change who can trigger upgrades by transferring ownership. * * NOTE: The real interface of this proxy is that defined in `ITransparentUpgradeableProxy`. This contract does not * inherit from that interface, and instead `upgradeToAndCall` is implicitly implemented using a custom dispatch * mechanism in `_fallback`. Consequently, the compiler will not produce an ABI for this contract. This is necessary to * fully implement transparency without decoding reverts caused by selector clashes between the proxy and the * implementation. * * NOTE: This proxy does not inherit from {Context} deliberately. The {ProxyAdmin} of this contract won't send a * meta-transaction in any way, and any other meta-transaction setup should be made in the implementation contract. * * IMPORTANT: This contract avoids unnecessary storage reads by setting the admin only during construction as an * immutable variable, preventing any changes thereafter. However, the admin slot defined in ERC-1967 can still be * overwritten by the implementation logic pointed to by this proxy. In such cases, the contract may end up in an * undesirable state where the admin slot is different from the actual admin. * * WARNING: It is not recommended to extend this contract to add additional external functions. If you do so, the * compiler will not check that there are no selector conflicts, due to the note above. A selector clash between any new * function and the functions declared in {ITransparentUpgradeableProxy} will be resolved in favor of the new one. This * could render the `upgradeToAndCall` function inaccessible, preventing upgradeability and compromising transparency. */ contract TransparentUpgradeableProxy is ERC1967Proxy { // An immutable address for the admin to avoid unnecessary SLOADs before each call // at the expense of removing the ability to change the admin once it's set. // This is acceptable if the admin is always a ProxyAdmin instance or similar contract // with its own ability to transfer the permissions to another account. address private immutable _admin; /** * @dev The proxy caller is the current admin, and can't fallback to the proxy target. */ error ProxyDeniedAdminAccess(); /** * @dev Initializes an upgradeable proxy managed by an instance of a {ProxyAdmin} with an `initialOwner`, * backed by the implementation at `_logic`, and optionally initialized with `_data` as explained in * {ERC1967Proxy-constructor}. */ constructor(address _logic, address initialOwner, bytes memory _data) payable ERC1967Proxy(_logic, _data) { _admin = address(new ProxyAdmin(initialOwner)); // Set the storage value and emit an event for ERC-1967 compatibility ERC1967Utils.changeAdmin(_proxyAdmin()); } /** * @dev Returns the admin of this proxy. */ function _proxyAdmin() internal virtual returns (address) { return _admin; } /** * @dev If caller is the admin process the call internally, otherwise transparently fallback to the proxy behavior. */ function _fallback() internal virtual override { if (msg.sender == _proxyAdmin()) { if (msg.sig != ITransparentUpgradeableProxy.upgradeToAndCall.selector) { revert ProxyDeniedAdminAccess(); } else { _dispatchUpgradeToAndCall(); } } else { super._fallback(); } } /** * @dev Upgrade the implementation of the proxy. See {ERC1967Utils-upgradeToAndCall}. * * Requirements: * * - If `data` is empty, `msg.value` must be zero. */ function _dispatchUpgradeToAndCall() private { (address newImplementation, bytes memory data) = abi.decode(msg.data[4:], (address, bytes)); ERC1967Utils.upgradeToAndCall(newImplementation, data); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @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 or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * 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. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @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`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.20; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(newImplementation.code.length > 0); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } }
File 2 of 4: ZkLink
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializing { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(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"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol) pragma solidity ^0.8.0; /** * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified * proxy whose upgrades are fully controlled by the current implementation. */ interface IERC1822ProxiableUpgradeable { /** * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation * address. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. */ function proxiableUUID() external view returns (bytes32); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol) pragma solidity ^0.8.0; /** * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC. * * _Available since v4.8.3._ */ interface IERC1967Upgradeable { /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeaconUpgradeable { /** * @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 // OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol) pragma solidity ^0.8.2; import "../beacon/IBeaconUpgradeable.sol"; import "../../interfaces/IERC1967Upgradeable.sol"; import "../../interfaces/draft-IERC1822Upgradeable.sol"; import "../../utils/AddressUpgradeable.sol"; import "../../utils/StorageSlotUpgradeable.sol"; import {Initializable} from "../utils/Initializable.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ */ abstract contract ERC1967UpgradeUpgradeable is Initializable, IERC1967Upgradeable { // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; function __ERC1967Upgrade_init() internal onlyInitializing { } function __ERC1967Upgrade_init_unchained() internal onlyInitializing { } /** * @dev Returns the current implementation address. */ function _getImplementation() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Perform implementation upgrade * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal { _upgradeTo(newImplementation); if (data.length > 0 || forceCall) { AddressUpgradeable.functionDelegateCall(newImplementation, data); } } /** * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal { // Upgrades from old implementations will perform a rollback test. This test requires the new // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing // this special case will break upgrade paths from old UUPS implementation to new ones. if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) { _setImplementation(newImplementation); } else { try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) { require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID"); } catch { revert("ERC1967Upgrade: new implementation is not UUPS"); } _upgradeToAndCall(newImplementation, data, forceCall); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Returns the current admin. */ function _getAdmin() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. */ function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @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 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Returns the current beacon. */ function _getBeacon() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract"); require( AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon; } /** * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. */ function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 || forceCall) { AddressUpgradeable.functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data); } } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: setting the version to 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized != type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _initializing; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol) pragma solidity ^0.8.0; import "../../interfaces/draft-IERC1822Upgradeable.sol"; import "../ERC1967/ERC1967UpgradeUpgradeable.sol"; import {Initializable} from "./Initializable.sol"; /** * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy. * * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing * `UUPSUpgradeable` with a custom implementation of upgrades. * * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ */ abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable { /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment address private immutable __self = address(this); /** * @dev Check that the execution is being performed through a delegatecall call and that the execution context is * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to * fail. */ modifier onlyProxy() { require(address(this) != __self, "Function must be called through delegatecall"); require(_getImplementation() == __self, "Function must be called through active proxy"); _; } /** * @dev Check that the execution is not being performed through a delegate call. This allows a function to be * callable on the implementing contract but not through proxies. */ modifier notDelegated() { require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall"); _; } function __UUPSUpgradeable_init() internal onlyInitializing { } function __UUPSUpgradeable_init_unchained() internal onlyInitializing { } /** * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the * implementation. It is used to validate the implementation's compatibility when performing an upgrade. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier. */ function proxiableUUID() external view virtual override notDelegated returns (bytes32) { return _IMPLEMENTATION_SLOT; } /** * @dev Upgrade the implementation of the proxy to `newImplementation`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. * * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function upgradeTo(address newImplementation) public virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, new bytes(0), false); } /** * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call * encoded in `data`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. * * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, data, true); } /** * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by * {upgradeTo} and {upgradeToAndCall}. * * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}. * * ```solidity * function _authorizeUpgrade(address) internal override onlyOwner {} * ``` */ function _authorizeUpgrade(address newImplementation) internal virtual; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract PausableUpgradeable is Initializable, ContextUpgradeable { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ function __Pausable_init() internal onlyInitializing { __Pausable_init_unchained(); } function __Pausable_init_unchained() internal onlyInitializing { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 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://consensys.net/diligence/blog/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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol) pragma solidity ^0.8.0; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._ * _Available since v4.9 for `string`, `bytes`._ */ library StorageSlotUpgradeable { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1, "Math: mulDiv overflow"); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0); } } } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface IGateway { /// @return Remote gateway function getRemoteGateway() external view returns (address); } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {IGateway} from "./IGateway.sol"; interface IL2Gateway is IGateway { /// @notice Send message to remote gateway /// @param _value The msg value /// @param _callData The call data function sendMessage(uint256 _value, bytes calldata _callData) external payable; } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; /// @title ZkLink interface contract /// @author zk.link interface IZkLink { /// @notice Send l2 requests sync status to primary chain /// @param _newTotalSyncedPriorityTxs New sync point function syncL2Requests(uint256 _newTotalSyncedPriorityTxs) external payable; /// @notice Receive batch root from primary chain /// @param _batchNumber The batch number /// @param _l2LogsRootHash The L2 to L1 log root hash /// @param _forwardEthAmount The forward eth amount function syncBatchRoot(uint256 _batchNumber, bytes32 _l2LogsRootHash, uint256 _forwardEthAmount) external payable; /// @notice Receive l2 tx hash from primary chain /// @param _l2TxHash The l2 tx hash on local chain /// @param _primaryChainL2TxHash The l2 tx hash on primary chain function syncL2TxHash(bytes32 _l2TxHash, bytes32 _primaryChainL2TxHash) external; } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol"; import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import {PausableUpgradeable} from "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol"; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {AddressAliasHelper} from "./zksync/l1-contracts/vendor/AddressAliasHelper.sol"; import {IZkLink} from "./interfaces/IZkLink.sol"; import {IL2Gateway} from "./interfaces/IL2Gateway.sol"; import {IMailbox, TxStatus} from "./zksync/l1-contracts/zksync/interfaces/IMailbox.sol"; import {IAdmin} from "./zksync/l1-contracts/zksync/interfaces/IAdmin.sol"; import {IZkSync} from "./zksync/l1-contracts/zksync/interfaces/IZkSync.sol"; import {Merkle} from "./zksync/l1-contracts/zksync/libraries/Merkle.sol"; import {TransactionValidator} from "./zksync/l1-contracts/zksync/libraries/TransactionValidator.sol"; import {L2Log, L2Message, PubdataPricingMode, FeeParams, SecondaryChainSyncStatus} from "./zksync/l1-contracts/zksync/Storage.sol"; import {UncheckedMath} from "./zksync/l1-contracts/common/libraries/UncheckedMath.sol"; import {UnsafeBytes} from "./zksync/l1-contracts/common/libraries/UnsafeBytes.sol"; import {REQUIRED_L2_GAS_PRICE_PER_PUBDATA, MAX_NEW_FACTORY_DEPS, L1_GAS_PER_PUBDATA_BYTE, L2_L1_LOGS_TREE_DEFAULT_LEAF_HASH} from "./zksync/l1-contracts/zksync/Config.sol"; import {L2_TO_L1_MESSENGER_SYSTEM_CONTRACT_ADDR, L2_BOOTLOADER_ADDRESS, L2_ETH_TOKEN_SYSTEM_CONTRACT_ADDR} from "./zksync/l1-contracts/common/L2ContractAddresses.sol"; import {IGetters} from "./zksync/l1-contracts/zksync/interfaces/IGetters.sol"; /// @title ZkLink contract /// @author zk.link contract ZkLink is IZkLink, IMailbox, IAdmin, IGetters, OwnableUpgradeable, UUPSUpgradeable, ReentrancyGuardUpgradeable, PausableUpgradeable { using UncheckedMath for uint256; // keccak256("ForwardL2Request(address gateway,bool isContractCall,address sender,uint256 txId,address contractAddressL2,uint256 l2Value,bytes32 l2CallDataHash,uint256 l2GasLimit,uint256 l2GasPricePerPubdata,bytes32 factoryDepsHash,address refundRecipient)") bytes32 public constant FORWARD_REQUEST_TYPE_HASH = 0xe0aaca1722ef50bb0c9b032e5b16ce2b79fa9f23638835456b27fd6894f8292c; /// @dev Whether eth is the gas token bool public immutable IS_ETH_GAS_TOKEN; /// @notice The gateway is used for communicating with L1 IL2Gateway public gateway; /// @notice List of permitted validators mapping(address validatorAddress => bool isValidator) public validators; /// @dev The white list allow to send request L2 request mapping(address contractAddress => bool isPermitToSendL2Request) public allowLists; /// @dev Gas price of primary chain uint256 public txGasPrice; /// @dev Fee params used to derive gasPrice for the L1->L2 transactions. For L2 transactions, /// the bootloader gives enough freedom to the operator. FeeParams public feeParams; /// @dev The total number of priority operations that were added to the priority queue uint256 public totalPriorityTxs; /// @dev The total number of synced priority operations uint256 public totalSyncedPriorityTxs; /// @dev The sync status for each priority operation mapping(uint256 priorityOpId => SecondaryChainSyncStatus) public priorityOpSyncStatus; /// @notice Total number of executed batches i.e. batches[totalBatchesExecuted] points at the latest executed batch /// (batch 0 is genesis) uint256 public totalBatchesExecuted; /// @dev Stored root hashes of L2 -> L1 logs mapping(uint256 batchNumber => bytes32 l2LogsRootHash) public l2LogsRootHashes; /// @dev Stored the l2 tx hash map from secondary chain to primary chain mapping(bytes32 l2TxHash => bytes32 primaryChainL2TxHash) public l2TxHashMap; /// @dev The total forward fee payed to validator uint256 public totalValidatorForwardFee; /// @dev The total forward fee withdrawn by validator uint256 public totalValidatorForwardFeeWithdrawn; /// @dev A mapping L2 batch number => message number => flag. /// @dev The L2 -> L1 log is sent for every withdrawal, so this mapping is serving as /// a flag to indicate that the message was already processed. /// @dev Used to indicate that eth withdrawal was already processed mapping(uint256 l2BatchNumber => mapping(uint256 l2ToL1MessageNumber => bool isFinalized)) public isEthWithdrawalFinalized; /// @dev The forward fee allocator address public forwardFeeAllocator; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; /// @notice Gateway init event InitGateway(IL2Gateway gateway); /// @notice Contract's permit status changed event ContractAllowStatusUpdate(address contractAddress, bool isPermit); /// @notice Tx gas price changed event TxGasPriceUpdate(uint256 oldTxGasPrice, uint256 newTxGasPrice); /// @notice Validator's status changed event ValidatorStatusUpdate(address validatorAddress, bool isActive); /// @notice Fee params for L1->L2 transactions changed event NewFeeParams(FeeParams oldFeeParams, FeeParams newFeeParams); /// @notice New priority request event. Emitted when a request is placed into the priority queue event NewPriorityRequest(uint256 priorityOpId, ForwardL2Request l2Request); /// @notice Emitted send sync status to primary chain. event SyncL2Requests(uint256 totalSyncedPriorityTxs, bytes32 syncHash, uint256 forwardEthAmount); /// @notice Emitted when receive batch root from primary chain. event SyncBatchRoot(uint256 batchNumber, bytes32 l2LogsRootHash, uint256 forwardEthAmount); /// @notice Emitted when receive l2 tx hash from primary chain. event SyncL2TxHash(bytes32 l2TxHash, bytes32 primaryChainL2TxHash); /// @notice Emitted when validator withdraw forward fee event WithdrawForwardFee(address receiver, uint256 amount); /// @notice Emitted when the withdrawal is finalized on L1 and funds are released. /// @param to The address to which the funds were sent /// @param amount The amount of funds that were sent event EthWithdrawalFinalized(address indexed to, uint256 amount); /// @notice Forward fee allocator changed event ForwardFeeAllocatorUpdate(address oldAllocator, address newAllocator); /// @notice Check if msg sender is gateway modifier onlyGateway() { require(msg.sender == address(gateway), "Not gateway"); _; } /// @notice Checks if validator is active modifier onlyValidator() { require(validators[msg.sender], "Not validator"); // validator is not active _; } /// @notice Checks if msg sender is forward fee allocator modifier onlyForwardFeeAllocator() { require(msg.sender == forwardFeeAllocator, "Not forward fee allocator"); _; } constructor(bool _isEthGasToken) { IS_ETH_GAS_TOKEN = _isEthGasToken; _disableInitializers(); } function initialize() external initializer { __Ownable_init(); __UUPSUpgradeable_init(); __ReentrancyGuard_init(); __Pausable_init(); } function _authorizeUpgrade(address newImplementation) internal override onlyOwner {} /// @dev Pause the contract, can only be called by the owner function pause() external onlyOwner { _pause(); } /// @dev Unpause the contract, can only be called by the owner function unpause() external onlyOwner { _unpause(); } function getGateway() external view returns (IL2Gateway) { return gateway; } function getGovernor() external view returns (address) { return owner(); } function getTotalBatchesExecuted() external view returns (uint256) { return totalBatchesExecuted; } function getTotalPriorityTxs() external view returns (uint256) { return totalPriorityTxs; } function isValidator(address _address) external view returns (bool) { return validators[_address]; } function l2LogsRootHash(uint256 _batchNumber) external view returns (bytes32 merkleRoot) { return l2LogsRootHashes[_batchNumber]; } function getPriorityTxMaxGasLimit() public pure returns (uint256) { return 72000000; } /// @dev Init gateway, can only be called by the owner function setGateway(IL2Gateway _gateway) external onlyOwner { require(address(gateway) == address(0), "Duplicate init gateway"); gateway = _gateway; emit InitGateway(_gateway); } /// @dev Update the permit status of contract, can only be called by the owner function setAllowList(address _contractAddress, bool _permitted) external onlyOwner { allowLists[_contractAddress] = _permitted; emit ContractAllowStatusUpdate(_contractAddress, _permitted); } /// @dev Update the tx gas price function setTxGasPrice(uint256 _newTxGasPrice) external onlyOwner { uint256 oldTxGasPrice = txGasPrice; txGasPrice = _newTxGasPrice; emit TxGasPriceUpdate(oldTxGasPrice, _newTxGasPrice); } function setValidator(address _validator, bool _active) external onlyGateway { validators[_validator] = _active; emit ValidatorStatusUpdate(_validator, _active); } function changeFeeParams(FeeParams calldata _newFeeParams) external onlyGateway { // Double checking that the new fee params are valid, i.e. // the maximal pubdata per batch is not less than the maximal pubdata per priority transaction. require(_newFeeParams.maxPubdataPerBatch >= _newFeeParams.priorityTxMaxPubdata, "n6"); FeeParams memory oldFeeParams = feeParams; feeParams = _newFeeParams; emit NewFeeParams(oldFeeParams, _newFeeParams); } /// @dev Update the forward fee allocator function setForwardFeeAllocator(address _newForwardFeeAllocator) external onlyOwner { require(_newForwardFeeAllocator != address(0), "Invalid allocator"); address oldAllocator = forwardFeeAllocator; forwardFeeAllocator = _newForwardFeeAllocator; emit ForwardFeeAllocatorUpdate(oldAllocator, _newForwardFeeAllocator); } function l2TransactionBaseCost( uint256 _gasPrice, uint256 _l2GasLimit, uint256 _l2GasPerPubdataByteLimit ) public view returns (uint256) { uint256 l2GasPrice = _deriveL2GasPrice(_gasPrice, _l2GasPerPubdataByteLimit); return l2GasPrice * _l2GasLimit; } function requestL2Transaction( address _contractL2, uint256 _l2Value, bytes calldata _calldata, uint256 _l2GasLimit, uint256 _l2GasPerPubdataByteLimit, bytes[] calldata _factoryDeps, address _refundRecipient ) external payable nonReentrant whenNotPaused returns (bytes32 canonicalTxHash) { // Disable l2 value if eth is not the gas token if (!IS_ETH_GAS_TOKEN) { require(_l2Value == 0, "Not allow l2 value"); } // Change the sender address if it is a smart contract to prevent address collision between L1 and L2. // Please note, currently zkSync address derivation is different from Ethereum one, but it may be changed in the future. address sender = msg.sender; bool isContractCall = false; // solhint-disable-next-line avoid-tx-origin if (sender != tx.origin) { // Check contract call is allowed for safe reasons require(allowLists[sender], "Not allow to send L2 request"); sender = AddressAliasHelper.applyL1ToL2Alias(msg.sender); isContractCall = true; } else { // Temporarily prohibit contract calls from EOA address for safe reasons require(_calldata.length == 0, "Not allow to call contract"); } // Enforcing that `_l2GasPerPubdataByteLimit` equals to a certain constant number. This is needed // to ensure that users do not get used to using "exotic" numbers for _l2GasPerPubdataByteLimit, e.g. 1-2, etc. // VERY IMPORTANT: nobody should rely on this constant to be fixed and every contract should give their users the ability to provide the // ability to provide `_l2GasPerPubdataByteLimit` for each independent transaction. // CHANGING THIS CONSTANT SHOULD BE A CLIENT-SIDE CHANGE. require(_l2GasPerPubdataByteLimit == REQUIRED_L2_GAS_PRICE_PER_PUBDATA, "Invalid l2GasPerPubdataByteLimit"); require(_factoryDeps.length <= MAX_NEW_FACTORY_DEPS, "Invalid factoryDeps"); // Checking that the user provided enough ether to pay for the transaction. uint256 l2GasPrice = _deriveL2GasPrice(txGasPrice, _l2GasPerPubdataByteLimit); uint256 baseCost = l2GasPrice * _l2GasLimit; require(msg.value == baseCost + _l2Value, "Invalid msg value"); // The `msg.value` doesn't cover the transaction cost totalValidatorForwardFee = totalValidatorForwardFee + baseCost; // If the `_refundRecipient` is not provided, we use the `sender` as the recipient. address refundRecipient = _refundRecipient == address(0) ? sender : _refundRecipient; // If the `_refundRecipient` is a smart contract, we apply the L1 to L2 alias to prevent foot guns. if (refundRecipient.code.length > 0) { refundRecipient = AddressAliasHelper.applyL1ToL2Alias(refundRecipient); } // Build l2 request params uint256 _totalPriorityTxs = totalPriorityTxs; ForwardL2Request memory request = ForwardL2Request( gateway.getRemoteGateway(), isContractCall, sender, _totalPriorityTxs, _contractL2, _l2Value, _calldata, _l2GasLimit, _l2GasPerPubdataByteLimit, _factoryDeps, refundRecipient ); // Validate l2 transaction { L2CanonicalTransaction memory transaction = _serializeL2Transaction(request); bytes memory transactionEncoding = abi.encode(transaction); TransactionValidator.validateL1ToL2Transaction( transaction, transactionEncoding, getPriorityTxMaxGasLimit(), feeParams.priorityTxMaxPubdata ); } canonicalTxHash = hashForwardL2Request(request); // Accumulate sync status SecondaryChainSyncStatus memory syncStatus; if (_totalPriorityTxs == 0) { syncStatus.hash = canonicalTxHash; syncStatus.amount = _l2Value; } else { syncStatus = priorityOpSyncStatus[_totalPriorityTxs - 1]; syncStatus.hash = keccak256(abi.encodePacked(syncStatus.hash, canonicalTxHash)); syncStatus.amount = syncStatus.amount + _l2Value; } priorityOpSyncStatus[_totalPriorityTxs] = syncStatus; totalPriorityTxs = _totalPriorityTxs + 1; emit NewPriorityRequest(request.txId, request); } function finalizeEthWithdrawal( uint256 _l2BatchNumber, uint256 _l2MessageIndex, uint16 _l2TxNumberInBatch, bytes calldata _message, bytes32[] calldata _merkleProof ) external nonReentrant { require(IS_ETH_GAS_TOKEN, "Not allow eth withdraw"); require(!isEthWithdrawalFinalized[_l2BatchNumber][_l2MessageIndex], "jj"); L2Message memory l2ToL1Message = L2Message({ txNumberInBatch: _l2TxNumberInBatch, sender: L2_ETH_TOKEN_SYSTEM_CONTRACT_ADDR, data: _message }); (address _l1Gateway, uint256 _amount, address _l1WithdrawReceiver) = _parseL2WithdrawalMessage(_message); require(_l1Gateway == gateway.getRemoteGateway(), "rg"); bool proofValid = proveL2MessageInclusion(_l2BatchNumber, _l2MessageIndex, l2ToL1Message, _merkleProof); require(proofValid, "pi"); // Failed to verify that withdrawal was actually initialized on L2 isEthWithdrawalFinalized[_l2BatchNumber][_l2MessageIndex] = true; _withdrawFunds(_l1WithdrawReceiver, _amount); emit EthWithdrawalFinalized(_l1WithdrawReceiver, _amount); } function proveL2MessageInclusion( uint256 _batchNumber, uint256 _index, L2Message memory _message, bytes32[] calldata _proof ) public view returns (bool) { return _proveL2LogInclusion(_batchNumber, _index, _L2MessageToLog(_message), _proof); } function proveL1ToL2TransactionStatus( bytes32 _l2TxHash, uint256 _l2BatchNumber, uint256 _l2MessageIndex, uint16 _l2TxNumberInBatch, bytes32[] calldata _merkleProof, TxStatus _status ) public view returns (bool) { // Get l2 tx hash on primary chain bytes32 primaryChainL2TxHash = l2TxHashMap[_l2TxHash]; require(primaryChainL2TxHash != bytes32(0), "Invalid l2 tx hash"); // Bootloader sends an L2 -> L1 log only after processing the L1 -> L2 transaction. // Thus, we can verify that the L1 -> L2 transaction was included in the L2 batch with specified status. // // The semantics of such L2 -> L1 log is always: // - sender = L2_BOOTLOADER_ADDRESS // - key = hash(L1ToL2Transaction) // - value = status of the processing transaction (1 - success & 0 - fail) // - isService = true (just a conventional value) // - l2ShardId = 0 (means that L1 -> L2 transaction was processed in a rollup shard, other shards are not available yet anyway) // - txNumberInBatch = number of transaction in the batch L2Log memory l2Log = L2Log({ l2ShardId: 0, isService: true, txNumberInBatch: _l2TxNumberInBatch, sender: L2_BOOTLOADER_ADDRESS, key: primaryChainL2TxHash, value: bytes32(uint256(_status)) }); return _proveL2LogInclusion(_l2BatchNumber, _l2MessageIndex, l2Log, _merkleProof); } function syncL2Requests(uint256 _newTotalSyncedPriorityTxs) external payable onlyValidator { // Check newTotalSyncedPriorityTxs require( _newTotalSyncedPriorityTxs <= totalPriorityTxs && _newTotalSyncedPriorityTxs > totalSyncedPriorityTxs, "Invalid sync point" ); // Forward eth amount is the difference of two accumulate amount SecondaryChainSyncStatus memory lastSyncStatus; if (totalSyncedPriorityTxs > 0) { lastSyncStatus = priorityOpSyncStatus[totalSyncedPriorityTxs - 1]; } SecondaryChainSyncStatus memory currentSyncStatus = priorityOpSyncStatus[_newTotalSyncedPriorityTxs - 1]; uint256 forwardAmount = currentSyncStatus.amount - lastSyncStatus.amount; // Update synced priority txs totalSyncedPriorityTxs = _newTotalSyncedPriorityTxs; // Send sync status to L1 gateway bytes memory callData = abi.encodeCall( IZkSync.syncL2Requests, (gateway.getRemoteGateway(), _newTotalSyncedPriorityTxs, currentSyncStatus.hash, forwardAmount) ); gateway.sendMessage{value: msg.value + forwardAmount}(forwardAmount, callData); emit SyncL2Requests(_newTotalSyncedPriorityTxs, currentSyncStatus.hash, forwardAmount); } function syncBatchRoot( uint256 _batchNumber, bytes32 _l2LogsRootHash, uint256 _forwardEthAmount ) external payable onlyGateway { require(msg.value == _forwardEthAmount, "Invalid forward amount"); // Allows repeated sending of the forward amount of the batch if (_batchNumber > totalBatchesExecuted) { totalBatchesExecuted = _batchNumber; } l2LogsRootHashes[_batchNumber] = _l2LogsRootHash; emit SyncBatchRoot(_batchNumber, _l2LogsRootHash, _forwardEthAmount); } function syncL2TxHash(bytes32 _l2TxHash, bytes32 _primaryChainL2TxHash) external onlyGateway { l2TxHashMap[_l2TxHash] = _primaryChainL2TxHash; emit SyncL2TxHash(_l2TxHash, _primaryChainL2TxHash); } function withdrawForwardFee(address _receiver, uint256 _amount) external nonReentrant onlyForwardFeeAllocator { require(_amount > 0, "Invalid amount"); uint256 newWithdrawnFee = totalValidatorForwardFeeWithdrawn + _amount; require(totalValidatorForwardFee >= newWithdrawnFee, "Withdraw exceed"); // Update withdrawn fee totalValidatorForwardFeeWithdrawn = newWithdrawnFee; // solhint-disable-next-line avoid-low-level-calls (bool success, ) = _receiver.call{value: _amount}(""); require(success, "Withdraw failed"); emit WithdrawForwardFee(_receiver, _amount); } /// @notice Derives the price for L2 gas in ETH to be paid. /// @param _l1GasPrice The gas price on L1. /// @param _gasPerPubdata The price for each pubdata byte in L2 gas /// @return The price of L2 gas in ETH function _deriveL2GasPrice(uint256 _l1GasPrice, uint256 _gasPerPubdata) internal view returns (uint256) { FeeParams memory _feeParams = feeParams; uint256 pubdataPriceETH; if (_feeParams.pubdataPricingMode == PubdataPricingMode.Rollup) { pubdataPriceETH = L1_GAS_PER_PUBDATA_BYTE * _l1GasPrice; } uint256 batchOverheadETH = uint256(_feeParams.batchOverheadL1Gas) * _l1GasPrice; uint256 fullPubdataPriceETH = pubdataPriceETH + batchOverheadETH / uint256(_feeParams.maxPubdataPerBatch); uint256 l2GasPrice = _feeParams.minimalL2GasPrice + batchOverheadETH / uint256(_feeParams.maxL2GasPerBatch); uint256 minL2GasPriceETH = (fullPubdataPriceETH + _gasPerPubdata - 1) / _gasPerPubdata; return Math.max(l2GasPrice, minL2GasPriceETH); } function _serializeL2Transaction( ForwardL2Request memory _request ) internal pure returns (L2CanonicalTransaction memory transaction) { transaction = L2CanonicalTransaction({ txType: uint256(0), from: uint256(0), to: uint256(0), gasLimit: _request.l2GasLimit, // Used in validate l2 transaction gasPerPubdataByteLimit: _request.l2GasPricePerPubdata, // Used in validate l2 transaction maxFeePerGas: uint256(0), maxPriorityFeePerGas: uint256(0), paymaster: uint256(0), nonce: uint256(0), value: uint256(0), reserved: [uint256(0), uint256(0), uint256(0), uint256(0)], data: _request.l2CallData, // Length used in validate l2 transaction signature: new bytes(0), factoryDeps: new uint256[](_request.factoryDeps.length), // Length used in validate l2 transaction paymasterInput: new bytes(0), reservedDynamic: new bytes(0) }); } /// @dev Convert arbitrary-length message to the raw l2 log function _L2MessageToLog(L2Message memory _message) internal pure returns (L2Log memory) { return L2Log({ l2ShardId: 0, isService: true, txNumberInBatch: _message.txNumberInBatch, sender: L2_TO_L1_MESSENGER_SYSTEM_CONTRACT_ADDR, key: bytes32(uint256(uint160(_message.sender))), value: keccak256(_message.data) }); } /// @dev Prove that a specific L2 log was sent in a specific L2 batch number function _proveL2LogInclusion( uint256 _batchNumber, uint256 _index, L2Log memory _log, bytes32[] calldata _proof ) internal view returns (bool) { require(_batchNumber <= totalBatchesExecuted, "xx"); bytes32 hashedLog = keccak256( abi.encodePacked(_log.l2ShardId, _log.isService, _log.txNumberInBatch, _log.sender, _log.key, _log.value) ); // Check that hashed log is not the default one, // otherwise it means that the value is out of range of sent L2 -> L1 logs require(hashedLog != L2_L1_LOGS_TREE_DEFAULT_LEAF_HASH, "tw"); // It is ok to not check length of `_proof` array, as length // of leaf preimage (which is `L2_TO_L1_LOG_SERIALIZE_SIZE`) is not // equal to the length of other nodes preimages (which are `2 * 32`) bytes32 calculatedRootHash = Merkle.calculateRoot(_proof, _index, hashedLog); bytes32 actualRootHash = l2LogsRootHashes[_batchNumber]; return actualRootHash == calculatedRootHash; } /// @dev Decode the withdraw message that came from L2 function _parseL2WithdrawalMessage( bytes memory _message ) internal pure returns (address l1Gateway, uint256 amount, address l1Receiver) { // We check that the message is long enough to read the data. // Please note that there are two versions of the message: // 1. The message that is sent by `withdraw(address _l1Receiver)` // It should be equal to the length of the bytes4 function signature + address l1Receiver + uint256 amount = 4 + 20 + 32 = 56 (bytes). // 2. The message that is sent by `withdrawWithMessage(address _l1Receiver, bytes calldata _additionalData)` // It should be equal to the length of the following: // bytes4 function signature + address l1Gateway + uint256 amount + address l2Sender + bytes _additionalData // (where the _additionalData = abi.encode(l1Receiver)) // = 4 + 20 + 32 + 20 + 32 == 108 (bytes). require(_message.length == 108, "pm"); (uint32 functionSignature, uint256 offset) = UnsafeBytes.readUint32(_message, 0); require(bytes4(functionSignature) == this.finalizeEthWithdrawal.selector, "is"); (l1Gateway, offset) = UnsafeBytes.readAddress(_message, offset); (amount, offset) = UnsafeBytes.readUint256(_message, offset); // The additional data is l1 receiver address (l1Receiver, offset) = UnsafeBytes.readAddress(_message, offset + 32); } /// @notice Transfer ether from the contract to the receiver /// @dev Reverts only if the transfer call failed function _withdrawFunds(address _to, uint256 _amount) internal { bool callSuccess; // Low-level assembly call, to avoid any memory copying (save gas) assembly { callSuccess := call(gas(), _to, _amount, 0, 0, 0, 0) } require(callSuccess, "pz"); } function hashForwardL2Request(ForwardL2Request memory _request) internal pure returns (bytes32) { return keccak256( abi.encode( FORWARD_REQUEST_TYPE_HASH, _request.gateway, _request.isContractCall, _request.sender, _request.txId, _request.contractAddressL2, _request.l2Value, keccak256(_request.l2CallData), _request.l2GasLimit, _request.l2GasPricePerPubdata, keccak256(abi.encode(_request.factoryDeps)), _request.refundRecipient ) ); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @dev The address of the L2 deployer system contract. address constant L2_DEPLOYER_SYSTEM_CONTRACT_ADDR = address(0x8006); /// @dev The special reserved L2 address. It is located in the system contracts space but doesn't have deployed /// bytecode. /// @dev The L2 deployer system contract allows changing bytecodes on any address if the `msg.sender` is this address. /// @dev So, whenever the governor wants to redeploy system contracts, it just initiates the L1 upgrade call deployer /// system contract /// via the L1 -> L2 transaction with `sender == L2_FORCE_DEPLOYER_ADDR`. For more details see the /// `diamond-initializers` contracts. address constant L2_FORCE_DEPLOYER_ADDR = address(0x8007); /// @dev The address of the special smart contract that can send arbitrary length message as an L2 log address constant L2_TO_L1_MESSENGER_SYSTEM_CONTRACT_ADDR = address(0x8008); /// @dev The formal address of the initial program of the system: the bootloader address constant L2_BOOTLOADER_ADDRESS = address(0x8001); /// @dev The address of the eth token system contract address constant L2_ETH_TOKEN_SYSTEM_CONTRACT_ADDR = address(0x800a); /// @dev The address of the known code storage system contract address constant L2_KNOWN_CODE_STORAGE_SYSTEM_CONTRACT_ADDR = address(0x8004); /// @dev The address of the context system contract address constant L2_SYSTEM_CONTEXT_SYSTEM_CONTRACT_ADDR = address(0x800b); // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @author Matter Labs * @custom:security-contact [email protected] * @notice The library for unchecked math. */ library UncheckedMath { function uncheckedInc(uint256 _number) internal pure returns (uint256) { unchecked { return _number + 1; } } function uncheckedAdd(uint256 _lhs, uint256 _rhs) internal pure returns (uint256) { unchecked { return _lhs + _rhs; } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @author Matter Labs * @custom:security-contact [email protected] * @dev The library provides a set of functions that help read data from an "abi.encodePacked" byte array. * @dev Each of the functions accepts the `bytes memory` and the offset where data should be read and returns a value of a certain type. * * @dev WARNING! * 1) Functions don't check the length of the bytes array, so it can go out of bounds. * The user of the library must check for bytes length before using any functions from the library! * * 2) Read variables are not cleaned up - https://docs.soliditylang.org/en/v0.8.16/internals/variable_cleanup.html. * Using data in inline assembly can lead to unexpected behavior! */ library UnsafeBytes { function readUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32 result, uint256 offset) { assembly { offset := add(_start, 4) result := mload(add(_bytes, offset)) } } function readAddress(bytes memory _bytes, uint256 _start) internal pure returns (address result, uint256 offset) { assembly { offset := add(_start, 20) result := mload(add(_bytes, offset)) } } function readUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256 result, uint256 offset) { assembly { offset := add(_start, 32) result := mload(add(_bytes, offset)) } } function readBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32 result, uint256 offset) { assembly { offset := add(_start, 32) result := mload(add(_bytes, offset)) } } // Original source code: https://github.com/GNSPS/solidity-bytes-utils/blob/master/contracts/BytesLib.sol#L228 // Get slice from bytes arrays // Returns the newly created 'bytes memory' // NOTE: theoretically possible overflow of (_start + _length) function slice(bytes memory _bytes, uint256 _start, uint256 _length) internal pure returns (bytes memory) { require(_bytes.length >= (_start + _length), "Z"); // bytes length is less then start byte + length bytes bytes memory tempBytes = new bytes(_length); if (_length != 0) { assembly { let slice_curr := add(tempBytes, 0x20) let slice_end := add(slice_curr, _length) for { let array_current := add(_bytes, add(_start, 0x20)) } lt(slice_curr, slice_end) { slice_curr := add(slice_curr, 0x20) array_current := add(array_current, 0x20) } { mstore(slice_curr, mload(array_current)) } } } return tempBytes; } } // SPDX-License-Identifier: Apache-2.0 /* * Copyright 2019-2021, Offchain 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. */ pragma solidity ^0.8.0; library AddressAliasHelper { uint160 internal constant OFFSET = uint160(0x1111000000000000000000000000000000001111); /// @notice Utility function converts the address that submitted a tx /// to the inbox on L1 to the msg.sender viewed on L2 /// @param l1Address the address in the L1 that triggered the tx to L2 /// @return l2Address L2 address as viewed in msg.sender function applyL1ToL2Alias(address l1Address) internal pure returns (address l2Address) { unchecked { l2Address = address(uint160(l1Address) + OFFSET); } } /// @notice Utility function that converts the msg.sender viewed on L2 to the /// address that submitted a tx to the inbox on L1 /// @param l2Address L2 address as viewed in msg.sender /// @return l1Address the address in the L1 that triggered the tx to L2 function undoL1ToL2Alias(address l2Address) internal pure returns (address l1Address) { unchecked { l1Address = address(uint160(l2Address) - OFFSET); } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @dev `keccak256("")` bytes32 constant EMPTY_STRING_KECCAK = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; /// @dev Bytes in raw L2 log /// @dev Equal to the bytes size of the tuple - (uint8 ShardId, bool isService, uint16 txNumberInBatch, address sender, /// bytes32 key, bytes32 value) uint256 constant L2_TO_L1_LOG_SERIALIZE_SIZE = 88; /// @dev The maximum length of the bytes array with L2 -> L1 logs uint256 constant MAX_L2_TO_L1_LOGS_COMMITMENT_BYTES = 4 + L2_TO_L1_LOG_SERIALIZE_SIZE * 512; /// @dev The value of default leaf hash for L2 -> L1 logs Merkle tree /// @dev An incomplete fixed-size tree is filled with this value to be a full binary tree /// @dev Actually equal to the `keccak256(new bytes(L2_TO_L1_LOG_SERIALIZE_SIZE))` bytes32 constant L2_L1_LOGS_TREE_DEFAULT_LEAF_HASH = 0x72abee45b59e344af8a6e520241c4744aff26ed411f4c4b00f8af09adada43ba; // TODO: change constant to the real root hash of empty Merkle tree (SMA-184) bytes32 constant DEFAULT_L2_LOGS_TREE_ROOT_HASH = bytes32(0); /// @dev Denotes the type of the zkSync transaction that came from L1. uint256 constant PRIORITY_OPERATION_L2_TX_TYPE = 255; /// @dev Denotes the type of the zkSync transaction that is used for system upgrades. uint256 constant SYSTEM_UPGRADE_L2_TX_TYPE = 254; /// @dev The maximal allowed difference between protocol versions in an upgrade. The 100 gap is needed /// in case a protocol version has been tested on testnet, but then not launched on mainnet, e.g. /// due to a bug found. uint256 constant MAX_ALLOWED_PROTOCOL_VERSION_DELTA = 100; /// @dev The amount of time in seconds the validator has to process the priority transaction /// NOTE: The constant is set to zero for the Alpha release period uint256 constant PRIORITY_EXPIRATION = 0 days; /// @dev Timestamp - seconds since unix epoch. uint256 constant COMMIT_TIMESTAMP_NOT_OLDER = 3 days; /// @dev Maximum available error between real commit batch timestamp and analog used in the verifier (in seconds) /// @dev Must be used cause miner's `block.timestamp` value can differ on some small value (as we know - 12 seconds) uint256 constant COMMIT_TIMESTAMP_APPROXIMATION_DELTA = 1 hours; /// @dev Shift to apply to verify public input before verifying. uint256 constant PUBLIC_INPUT_SHIFT = 32; /// @dev The maximum number of L2 gas that a user can request for an L2 transaction uint256 constant MAX_GAS_PER_TRANSACTION = 80000000; /// @dev Even though the price for 1 byte of pubdata is 16 L1 gas, we have a slightly increased /// value. uint256 constant L1_GAS_PER_PUBDATA_BYTE = 17; /// @dev The intrinsic cost of the L1->l2 transaction in computational L2 gas uint256 constant L1_TX_INTRINSIC_L2_GAS = 167157; /// @dev The intrinsic cost of the L1->l2 transaction in pubdata uint256 constant L1_TX_INTRINSIC_PUBDATA = 88; /// @dev The minimal base price for L1 transaction uint256 constant L1_TX_MIN_L2_GAS_BASE = 173484; /// @dev The number of L2 gas the transaction starts costing more with each 544 bytes of encoding uint256 constant L1_TX_DELTA_544_ENCODING_BYTES = 1656; /// @dev The number of L2 gas an L1->L2 transaction gains with each new factory dependency uint256 constant L1_TX_DELTA_FACTORY_DEPS_L2_GAS = 2473; /// @dev The number of L2 gas an L1->L2 transaction gains with each new factory dependency uint256 constant L1_TX_DELTA_FACTORY_DEPS_PUBDATA = 64; /// @dev The number of pubdata an L1->L2 transaction requires with each new factory dependency uint256 constant MAX_NEW_FACTORY_DEPS = 32; /// @dev The L2 gasPricePerPubdata required to be used in bridges. uint256 constant REQUIRED_L2_GAS_PRICE_PER_PUBDATA = 800; /// @dev The mask which should be applied to the packed batch and L2 block timestamp in order /// to obtain the L2 block timestamp. Applying this mask is equivalent to calculating modulo 2**128 uint256 constant PACKED_L2_BLOCK_TIMESTAMP_MASK = 0xffffffffffffffffffffffffffffffff; /// @dev The overhead for a transaction slot in L2 gas. /// It is roughly equal to 80kk/MAX_TRANSACTIONS_IN_BATCH, i.e. how many gas would an L1->L2 transaction /// need to pay to compensate for the batch being closed. /// @dev It is expected that the L1 contracts will enforce that the L2 gas price will be high enough to compensate /// the operator in case the batch is closed because of tx slots filling up. uint256 constant TX_SLOT_OVERHEAD_L2_GAS = 10000; /// @dev The overhead for each byte of the bootloader memory that the encoding of the transaction. /// It is roughly equal to 80kk/BOOTLOADER_MEMORY_FOR_TXS, i.e. how many gas would an L1->L2 transaction /// need to pay to compensate for the batch being closed. /// @dev It is expected that the L1 contracts will enforce that the L2 gas price will be high enough to compensate /// the operator in case the batch is closed because of the memory for transactions being filled up. uint256 constant MEMORY_OVERHEAD_GAS = 10; // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {FeeParams} from "../Storage.sol"; import {IL2Gateway} from "../../../../interfaces/IL2Gateway.sol"; /// @title The interface of the Admin Contract that controls access rights for contract management. /// @author Matter Labs /// @custom:security-contact [email protected] interface IAdmin { /// @notice Init gateway /// @param _gateway The gateway on local chain function setGateway(IL2Gateway _gateway) external; /// @notice Change validator status (active or not active) /// @param _validator Validator address /// @param _active Active flag function setValidator(address _validator, bool _active) external; /// @notice Change the fee params for L1->L2 transactions /// @param _newFeeParams The new fee params function changeFeeParams(FeeParams calldata _newFeeParams) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {IL2Gateway} from "../../../../interfaces/IL2Gateway.sol"; /// @title The interface of the Getters Contract that implements functions for getting contract state from outside the blockchain. /// @author Matter Labs /// @custom:security-contact [email protected] interface IGetters { /*////////////////////////////////////////////////////////////// CUSTOM GETTERS //////////////////////////////////////////////////////////////*/ /// @return The gateway on local chain function getGateway() external view returns (IL2Gateway); /// @return The address of the current governor function getGovernor() external view returns (address); /// @return The total number of batches that were committed & verified & executed function getTotalBatchesExecuted() external view returns (uint256); /// @return The total number of priority operations that were added to the priority queue, including all processed ones function getTotalPriorityTxs() external view returns (uint256); /// @return Whether the address has a validator access function isValidator(address _address) external view returns (bool); /// @return merkleRoot Merkle root of the tree with L2 logs for the selected batch function l2LogsRootHash(uint256 _batchNumber) external view returns (bytes32 merkleRoot); /// @return The maximum number of L2 gas that a user can request for L1 -> L2 transactions function getPriorityTxMaxGasLimit() external view returns (uint256); /// @return Whether a withdrawal has been finalized. /// @param _l2BatchNumber The L2 batch number within which the withdrawal happened. /// @param _l2MessageIndex The index of the L2->L1 message denoting the withdrawal. function isEthWithdrawalFinalized(uint256 _l2BatchNumber, uint256 _l2MessageIndex) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {L2Message} from "../Storage.sol"; /// @dev The enum that represents the transaction execution status /// @param Failure The transaction execution failed /// @param Success The transaction execution succeeded enum TxStatus { Failure, Success } /// @title The interface of the zkSync Mailbox contract that provides interfaces for L1 <-> L2 interaction. /// @author Matter Labs /// @custom:security-contact [email protected] interface IMailbox { /// @dev Structure that includes all fields of the L2 transaction /// @dev The hash of this structure is the "canonical L2 transaction hash" and can be used as a unique identifier of a tx /// @param txType The tx type number, depending on which the L2 transaction can be interpreted differently /// @param from The sender's address. `uint256` type for possible address format changes and maintaining backward compatibility /// @param to The recipient's address. `uint256` type for possible address format changes and maintaining backward compatibility /// @param gasLimit The L2 gas limit for L2 transaction. Analog to the `gasLimit` on an L1 transactions /// @param gasPerPubdataByteLimit Maximum number of L2 gas that will cost one byte of pubdata (every piece of data that will be stored on L1 as calldata) /// @param maxFeePerGas The absolute maximum sender willing to pay per unit of L2 gas to get the transaction included in a batch. Analog to the EIP-1559 `maxFeePerGas` on an L1 transactions /// @param maxPriorityFeePerGas The additional fee that is paid directly to the validator to incentivize them to include the transaction in a batch. Analog to the EIP-1559 `maxPriorityFeePerGas` on an L1 transactions /// @param paymaster The address of the EIP-4337 paymaster, that will pay fees for the transaction. `uint256` type for possible address format changes and maintaining backward compatibility /// @param nonce The nonce of the transaction. For L1->L2 transactions it is the priority operation Id. /// @param value The value to pass with the transaction /// @param reserved The fixed-length fields for usage in a future extension of transaction formats /// @param data The calldata that is transmitted for the transaction call /// @param signature An abstract set of bytes that are used for transaction authorization /// @param factoryDeps The set of L2 bytecode hashes whose preimages were shown on L1 /// @param paymasterInput The arbitrary-length data that is used as a calldata to the paymaster pre-call /// @param reservedDynamic The arbitrary-length field for usage in a future extension of transaction formats struct L2CanonicalTransaction { uint256 txType; uint256 from; uint256 to; uint256 gasLimit; uint256 gasPerPubdataByteLimit; uint256 maxFeePerGas; uint256 maxPriorityFeePerGas; uint256 paymaster; uint256 nonce; uint256 value; // In the future, we might want to add some // new fields to the struct. The `txData` struct // is to be passed to account and any changes to its structure // would mean a breaking change to these accounts. To prevent this, // we should keep some fields as "reserved". // It is also recommended that their length is fixed, since // it would allow easier proof integration (in case we will need // some special circuit for preprocessing transactions). uint256[4] reserved; bytes data; bytes signature; uint256[] factoryDeps; bytes paymasterInput; // Reserved dynamic type for the future use-case. Using it should be avoided, // But it is still here, just in case we want to enable some additional functionality. bytes reservedDynamic; } /// @dev Internal structure that contains the parameters for the forwardRequestL2Transaction /// @param gateway The secondary chain gateway; /// @param isContractCall It's true when the request come from a contract. /// @param sender The sender's address. /// @param txId The id of the priority transaction. /// @param contractAddressL2 The address of the contract on L2 to call. /// @param l2Value The msg.value of the L2 transaction. /// @param l2CallData The call data of the L2 transaction. /// @param l2GasLimit The limit of the L2 gas for the L2 transaction /// @param l2GasPrice The price of the L2 gas in Wei to be used for this transaction. /// @param l2GasPricePerPubdata The price for a single pubdata byte in L2 gas. /// @param refundRecipient The recipient of the refund for the transaction on L2. If the transaction fails, then /// this address will receive the `l2Value`. struct ForwardL2Request { address gateway; bool isContractCall; address sender; uint256 txId; address contractAddressL2; uint256 l2Value; bytes l2CallData; uint256 l2GasLimit; uint256 l2GasPricePerPubdata; bytes[] factoryDeps; address refundRecipient; } /// @notice Prove that a specific arbitrary-length message was sent in a specific L2 batch number /// @param _l2BatchNumber The executed L2 batch number in which the message appeared /// @param _index The position in the L2 logs Merkle tree of the l2Log that was sent with the message /// @param _message Information about the sent message: sender address, the message itself, tx index in the L2 batch where the message was sent /// @param _proof Merkle proof for inclusion of L2 log that was sent with the message /// @return Whether the proof is valid function proveL2MessageInclusion( uint256 _l2BatchNumber, uint256 _index, L2Message calldata _message, bytes32[] calldata _proof ) external view returns (bool); /// @notice Prove that the L1 -> L2 transaction was processed with the specified status. /// @param _l2TxHash The L2 canonical transaction hash /// @param _l2BatchNumber The L2 batch number where the transaction was processed /// @param _l2MessageIndex The position in the L2 logs Merkle tree of the l2Log that was sent with the message /// @param _l2TxNumberInBatch The L2 transaction number in the batch, in which the log was sent /// @param _merkleProof The Merkle proof of the processing L1 -> L2 transaction /// @param _status The execution status of the L1 -> L2 transaction (true - success & 0 - fail) /// @return Whether the proof is correct and the transaction was actually executed with provided status /// NOTE: It may return `false` for incorrect proof, but it doesn't mean that the L1 -> L2 transaction has an opposite status! function proveL1ToL2TransactionStatus( bytes32 _l2TxHash, uint256 _l2BatchNumber, uint256 _l2MessageIndex, uint16 _l2TxNumberInBatch, bytes32[] calldata _merkleProof, TxStatus _status ) external view returns (bool); /// @notice Request execution of L2 transaction from L1. /// @param _contractL2 The L2 receiver address /// @param _l2Value `msg.value` of L2 transaction /// @param _calldata The input of the L2 transaction /// @param _l2GasLimit Maximum amount of L2 gas that transaction can consume during execution on L2 /// @param _l2GasPerPubdataByteLimit The maximum amount L2 gas that the operator may charge the user for single byte of pubdata. /// @param _factoryDeps An array of L2 bytecodes that will be marked as known on L2 /// @param _refundRecipient The address on L2 that will receive the refund for the transaction. /// @dev If the L2 deposit finalization transaction fails, the `_refundRecipient` will receive the `_l2Value`. /// Please note, the contract may change the refund recipient's address to eliminate sending funds to addresses out of control. /// - If `_refundRecipient` is a contract on L1, the refund will be sent to the aliased `_refundRecipient`. /// - If `_refundRecipient` is set to `address(0)` and the sender has NO deployed bytecode on L1, the refund will be sent to the `msg.sender` address. /// - If `_refundRecipient` is set to `address(0)` and the sender has deployed bytecode on L1, the refund will be sent to the aliased `msg.sender` address. /// @dev The address aliasing of L1 contracts as refund recipient on L2 is necessary to guarantee that the funds are controllable, /// since address aliasing to the from address for the L2 tx will be applied if the L1 `msg.sender` is a contract. /// Without address aliasing for L1 contracts as refund recipients they would not be able to make proper L2 tx requests /// through the Mailbox to use or withdraw the funds from L2, and the funds would be lost. /// @return canonicalTxHash The hash of the requested L2 transaction. This hash can be used to follow the transaction status function requestL2Transaction( address _contractL2, uint256 _l2Value, bytes calldata _calldata, uint256 _l2GasLimit, uint256 _l2GasPerPubdataByteLimit, bytes[] calldata _factoryDeps, address _refundRecipient ) external payable returns (bytes32 canonicalTxHash); /// @notice Finalize the withdrawal and release funds /// @param _l2BatchNumber The L2 batch number where the withdrawal was processed /// @param _l2MessageIndex The position in the L2 logs Merkle tree of the l2Log that was sent with the message /// @param _l2TxNumberInBatch The L2 transaction number in a batch, in which the log was sent /// @param _message The L2 withdraw data, stored in an L2 -> L1 message /// @param _merkleProof The Merkle proof of the inclusion L2 -> L1 message about withdrawal initialization function finalizeEthWithdrawal( uint256 _l2BatchNumber, uint256 _l2MessageIndex, uint16 _l2TxNumberInBatch, bytes calldata _message, bytes32[] calldata _merkleProof ) external; /// @notice Estimates the cost in Ether of requesting execution of an L2 transaction from L1 /// @param _gasPrice expected L1 gas price at which the user requests the transaction execution /// @param _l2GasLimit Maximum amount of L2 gas that transaction can consume during execution on L2 /// @param _l2GasPerPubdataByteLimit The maximum amount of L2 gas that the operator may charge the user for a single byte of pubdata. /// @return The estimated ETH spent on L2 gas for the transaction function l2TransactionBaseCost( uint256 _gasPrice, uint256 _l2GasLimit, uint256 _l2GasPerPubdataByteLimit ) external view returns (uint256); } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface IZkSync { /// @notice Update secondary chain status /// @param _gateway The secondary chain gateway /// @param _active Active flag function setSecondaryChainGateway(address _gateway, bool _active) external; /// @notice Receive sync status from secondary chain /// @param _secondaryChainGateway The secondary chain gateway address /// @param _newTotalSyncedPriorityTxs New sync point /// @param _syncHash New sync hash /// @param _forwardEthAmount The difference eth amount between two sync points function syncL2Requests( address _secondaryChainGateway, uint256 _newTotalSyncedPriorityTxs, bytes32 _syncHash, uint256 _forwardEthAmount ) external payable; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {UncheckedMath} from "../../common/libraries/UncheckedMath.sol"; /// @author Matter Labs /// @custom:security-contact [email protected] library Merkle { using UncheckedMath for uint256; /// @dev Calculate Merkle root by the provided Merkle proof. /// NOTE: When using this function, check that the _path length is equal to the tree height to prevent shorter/longer paths attack /// @param _path Merkle path from the leaf to the root /// @param _index Leaf index in the tree /// @param _itemHash Hash of leaf content /// @return The Merkle root function calculateRoot( bytes32[] calldata _path, uint256 _index, bytes32 _itemHash ) internal pure returns (bytes32) { uint256 pathLength = _path.length; require(pathLength > 0, "xc"); require(pathLength < 256, "bt"); require(_index < (1 << pathLength), "px"); bytes32 currentHash = _itemHash; for (uint256 i; i < pathLength; i = i.uncheckedInc()) { currentHash = (_index % 2 == 0) ? _efficientHash(currentHash, _path[i]) : _efficientHash(_path[i], currentHash); _index /= 2; } return currentHash; } /// @dev Keccak hash of the concatenation of two 32-byte words function _efficientHash(bytes32 _lhs, bytes32 _rhs) private pure returns (bytes32 result) { assembly { mstore(0x00, _lhs) mstore(0x20, _rhs) result := keccak256(0x00, 0x40) } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Math} from "@openzeppelin/contracts/utils/math/Math.sol"; import {IMailbox} from "../interfaces/IMailbox.sol"; import {TX_SLOT_OVERHEAD_L2_GAS, MEMORY_OVERHEAD_GAS, L1_TX_INTRINSIC_L2_GAS, L1_TX_DELTA_544_ENCODING_BYTES, L1_TX_DELTA_FACTORY_DEPS_L2_GAS, L1_TX_MIN_L2_GAS_BASE, L1_TX_INTRINSIC_PUBDATA, L1_TX_DELTA_FACTORY_DEPS_PUBDATA, MAX_GAS_PER_TRANSACTION} from "../Config.sol"; /// @title zkSync Library for validating L1 -> L2 transactions /// @author Matter Labs /// @custom:security-contact [email protected] library TransactionValidator { /// @dev Used to validate key properties of an L1->L2 transaction /// @param _transaction The transaction to validate /// @param _encoded The abi encoded bytes of the transaction /// @param _priorityTxMaxGasLimit The max gas limit, generally provided from Storage.sol /// @param _priorityTxMaxPubdata The maximal amount of pubdata that a single L1->L2 transaction can emit function validateL1ToL2Transaction( IMailbox.L2CanonicalTransaction memory _transaction, bytes memory _encoded, uint256 _priorityTxMaxGasLimit, uint256 _priorityTxMaxPubdata ) internal pure { uint256 l2GasForTxBody = getTransactionBodyGasLimit(_transaction.gasLimit, _encoded.length); // Ensuring that the transaction is provable require(l2GasForTxBody <= _priorityTxMaxGasLimit, "ui"); // Ensuring that the transaction cannot output more pubdata than is processable require(l2GasForTxBody / _transaction.gasPerPubdataByteLimit <= _priorityTxMaxPubdata, "uk"); // Ensuring that the transaction covers the minimal costs for its processing: // hashing its content, publishing the factory dependencies, etc. require( getMinimalPriorityTransactionGasLimit( _encoded.length, _transaction.factoryDeps.length, _transaction.gasPerPubdataByteLimit ) <= l2GasForTxBody, "up" ); } /// @dev Used to validate upgrade transactions /// @param _transaction The transaction to validate function validateUpgradeTransaction(IMailbox.L2CanonicalTransaction memory _transaction) internal pure { // Restrict from to be within system contract range (0...2^16 - 1) require(_transaction.from <= type(uint16).max, "ua"); require(_transaction.to <= type(uint160).max, "ub"); require(_transaction.paymaster == 0, "uc"); require(_transaction.value == 0, "ud"); require(_transaction.maxFeePerGas == 0, "uq"); require(_transaction.maxPriorityFeePerGas == 0, "ux"); require(_transaction.reserved[0] == 0, "ue"); require(_transaction.reserved[1] <= type(uint160).max, "uf"); require(_transaction.reserved[2] == 0, "ug"); require(_transaction.reserved[3] == 0, "uo"); require(_transaction.signature.length == 0, "uh"); require(_transaction.paymasterInput.length == 0, "ul"); require(_transaction.reservedDynamic.length == 0, "um"); } /// @dev Calculates the approximate minimum gas limit required for executing a priority transaction. /// @param _encodingLength The length of the priority transaction encoding in bytes. /// @param _numberOfFactoryDependencies The number of new factory dependencies that will be added. /// @param _l2GasPricePerPubdata The L2 gas price for publishing the priority transaction on L2. /// @return The minimum gas limit required to execute the priority transaction. /// Note: The calculation includes the main cost of the priority transaction, however, in reality, the operator can spend a little more gas on overheads. function getMinimalPriorityTransactionGasLimit( uint256 _encodingLength, uint256 _numberOfFactoryDependencies, uint256 _l2GasPricePerPubdata ) internal pure returns (uint256) { uint256 costForComputation; { // Adding the intrinsic cost for the transaction, i.e. auxiliary prices which cannot be easily accounted for costForComputation = L1_TX_INTRINSIC_L2_GAS; // Taking into account the hashing costs that depend on the length of the transaction // Note that L1_TX_DELTA_544_ENCODING_BYTES is the delta in the price for every 544 bytes of // the transaction's encoding. It is taken as LCM between 136 and 32 (the length for each keccak256 round // and the size of each new encoding word). costForComputation += Math.ceilDiv(_encodingLength * L1_TX_DELTA_544_ENCODING_BYTES, 544); // Taking into the account the additional costs of providing new factory dependencies costForComputation += _numberOfFactoryDependencies * L1_TX_DELTA_FACTORY_DEPS_L2_GAS; // There is a minimal amount of computational L2 gas that the transaction should cover costForComputation = Math.max(costForComputation, L1_TX_MIN_L2_GAS_BASE); } uint256 costForPubdata = 0; { // Adding the intrinsic cost for the transaction, i.e. auxiliary prices which cannot be easily accounted for costForPubdata = L1_TX_INTRINSIC_PUBDATA * _l2GasPricePerPubdata; // Taking into the account the additional costs of providing new factory dependencies costForPubdata += _numberOfFactoryDependencies * L1_TX_DELTA_FACTORY_DEPS_PUBDATA * _l2GasPricePerPubdata; } return costForComputation + costForPubdata; } /// @notice Based on the full L2 gas limit (that includes the batch overhead) and other /// properties of the transaction, returns the l2GasLimit for the body of the transaction (the actual execution). /// @param _totalGasLimit The L2 gas limit that includes both the overhead for processing the batch /// and the L2 gas needed to process the transaction itself (i.e. the actual l2GasLimit that will be used for the transaction). /// @param _encodingLength The length of the ABI-encoding of the transaction. function getTransactionBodyGasLimit( uint256 _totalGasLimit, uint256 _encodingLength ) internal pure returns (uint256 txBodyGasLimit) { uint256 overhead = getOverheadForTransaction(_encodingLength); require(_totalGasLimit >= overhead, "my"); // provided gas limit doesn't cover transaction overhead unchecked { // We enforce the fact that `_totalGasLimit >= overhead` explicitly above. txBodyGasLimit = _totalGasLimit - overhead; } } /// @notice Based on the total L2 gas limit and several other parameters of the transaction /// returns the part of the L2 gas that will be spent on the batch's overhead. /// @dev The details of how this function works can be checked in the documentation /// of the fee model of zkSync. The appropriate comments are also present /// in the Rust implementation description of function `get_maximal_allowed_overhead`. /// @param _encodingLength The length of the binary encoding of the transaction in bytes function getOverheadForTransaction( uint256 _encodingLength ) internal pure returns (uint256 batchOverheadForTransaction) { // The overhead from taking up the transaction's slot batchOverheadForTransaction = TX_SLOT_OVERHEAD_L2_GAS; // The overhead for occupying the bootloader memory can be derived from encoded_len uint256 overheadForLength = MEMORY_OVERHEAD_GAS * _encodingLength; batchOverheadForTransaction = Math.max(batchOverheadForTransaction, overheadForLength); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @dev The log passed from L2 /// @param l2ShardId The shard identifier, 0 - rollup, 1 - porter. All other values are not used but are reserved for /// the future /// @param isService A boolean flag that is part of the log along with `key`, `value`, and `sender` address. /// This field is required formally but does not have any special meaning. /// @param txNumberInBatch The L2 transaction number in the batch, in which the log was sent /// @param sender The L2 address which sent the log /// @param key The 32 bytes of information that was sent in the log /// @param value The 32 bytes of information that was sent in the log // Both `key` and `value` are arbitrary 32-bytes selected by the log sender struct L2Log { uint8 l2ShardId; bool isService; uint16 txNumberInBatch; address sender; bytes32 key; bytes32 value; } /// @dev An arbitrary length message passed from L2 /// @notice Under the hood it is `L2Log` sent from the special system L2 contract /// @param txNumberInBatch The L2 transaction number in the batch, in which the message was sent /// @param sender The address of the L2 account from which the message was passed /// @param data An arbitrary length message struct L2Message { uint16 txNumberInBatch; address sender; bytes data; } /// @notice The struct that describes whether users will be charged for pubdata for L1->L2 transactions. /// @param Rollup The users are charged for pubdata & it is priced based on the gas price on Ethereum. /// @param Validium The pubdata is considered free with regard to the L1 gas price. enum PubdataPricingMode { Rollup, Validium } /// @notice The fee params for L1->L2 transactions for the network. /// @param pubdataPricingMode How the users will charged for pubdata in L1->L2 transactions. /// @param batchOverheadL1Gas The amount of L1 gas required to process the batch (except for the calldata). /// @param maxPubdataPerBatch The maximal number of pubdata that can be emitted per batch. /// @param priorityTxMaxPubdata The maximal amount of pubdata a priority transaction is allowed to publish. /// It can be slightly less than maxPubdataPerBatch in order to have some margin for the bootloader execution. /// @param minimalL2GasPrice The minimal L2 gas price to be used by L1->L2 transactions. It should represent /// the price that a single unit of compute costs. struct FeeParams { PubdataPricingMode pubdataPricingMode; uint32 batchOverheadL1Gas; uint32 maxPubdataPerBatch; uint32 maxL2GasPerBatch; uint32 priorityTxMaxPubdata; uint64 minimalL2GasPrice; } /// @dev The sync status for priority op of secondary chain /// @param hash The cumulative canonicalTxHash /// @param amount The cumulative l2 value struct SecondaryChainSyncStatus { bytes32 hash; uint256 amount; }
File 3 of 4: ERC1967Proxy
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../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. * * The initial owner is set to the address provided by the deployer. 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; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(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 { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1967.sol) pragma solidity ^0.8.20; /** * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC. */ interface IERC1967 { /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/BeaconProxy.sol) pragma solidity ^0.8.20; import {IBeacon} from "./IBeacon.sol"; import {Proxy} from "../Proxy.sol"; import {ERC1967Utils} from "../ERC1967/ERC1967Utils.sol"; /** * @dev This contract implements a proxy that gets the implementation address for each call from an {UpgradeableBeacon}. * * The beacon address can only be set once during construction, and cannot be changed afterwards. It is stored in an * immutable variable to avoid unnecessary storage reads, and also in the beacon storage slot specified by * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] so that it can be accessed externally. * * CAUTION: Since the beacon address can never be changed, you must ensure that you either control the beacon, or trust * the beacon to not upgrade the implementation maliciously. * * IMPORTANT: Do not use the implementation logic to modify the beacon storage slot. Doing so would leave the proxy in * an inconsistent state where the beacon storage slot does not match the beacon address. */ contract BeaconProxy is Proxy { // An immutable address for the beacon to avoid unnecessary SLOADs before each delegate call. address private immutable _beacon; /** * @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 initializing the storage of the proxy like a Solidity * constructor. * * Requirements: * * - `beacon` must be a contract with the interface {IBeacon}. * - If `data` is empty, `msg.value` must be zero. */ constructor(address beacon, bytes memory data) payable { ERC1967Utils.upgradeBeaconToAndCall(beacon, data); _beacon = beacon; } /** * @dev Returns the current implementation address of the associated beacon. */ function _implementation() internal view virtual override returns (address) { return IBeacon(_getBeacon()).implementation(); } /** * @dev Returns the beacon. */ function _getBeacon() internal view virtual returns (address) { return _beacon; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.20; /** * @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. * * {UpgradeableBeacon} will check that this address is a contract. */ function implementation() external view returns (address); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/beacon/UpgradeableBeacon.sol) pragma solidity ^0.8.20; import {IBeacon} from "./IBeacon.sol"; import {Ownable} from "../../access/Ownable.sol"; /** * @dev This contract is used in conjunction with one or more instances of {BeaconProxy} to determine their * implementation contract, which is where they will delegate all function calls. * * An owner is able to change the implementation the beacon points to, thus upgrading the proxies that use this beacon. */ contract UpgradeableBeacon is IBeacon, Ownable { address private _implementation; /** * @dev The `implementation` of the beacon is invalid. */ error BeaconInvalidImplementation(address implementation); /** * @dev Emitted when the implementation returned by the beacon is changed. */ event Upgraded(address indexed implementation); /** * @dev Sets the address of the initial implementation, and the initial owner who can upgrade the beacon. */ constructor(address implementation_, address initialOwner) Ownable(initialOwner) { _setImplementation(implementation_); } /** * @dev Returns the current implementation address. */ function implementation() public view virtual returns (address) { return _implementation; } /** * @dev Upgrades the beacon to a new implementation. * * Emits an {Upgraded} event. * * Requirements: * * - msg.sender must be the owner of the contract. * - `newImplementation` must be a contract. */ function upgradeTo(address newImplementation) public virtual onlyOwner { _setImplementation(newImplementation); } /** * @dev Sets the implementation contract address for this beacon * * Requirements: * * - `newImplementation` must be a contract. */ function _setImplementation(address newImplementation) private { if (newImplementation.code.length == 0) { revert BeaconInvalidImplementation(newImplementation); } _implementation = newImplementation; emit Upgraded(newImplementation); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Proxy.sol) pragma solidity ^0.8.20; import {Proxy} from "../Proxy.sol"; import {ERC1967Utils} from "./ERC1967Utils.sol"; /** * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an * implementation address that can be changed. This address is stored in storage in the location specified by * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the * implementation behind the proxy. */ contract ERC1967Proxy is Proxy { /** * @dev Initializes the upgradeable proxy with an initial implementation specified by `implementation`. * * If `_data` is nonempty, it's used as data in a delegate call to `implementation`. This will typically be an * encoded function call, and allows initializing the storage of the proxy like a Solidity constructor. * * Requirements: * * - If `data` is empty, `msg.value` must be zero. */ constructor(address implementation, bytes memory _data) payable { ERC1967Utils.upgradeToAndCall(implementation, _data); } /** * @dev Returns the current implementation address. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc` */ function _implementation() internal view virtual override returns (address) { return ERC1967Utils.getImplementation(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/ERC1967/ERC1967Utils.sol) pragma solidity ^0.8.20; import {IBeacon} from "../beacon/IBeacon.sol"; import {Address} from "../../utils/Address.sol"; import {StorageSlot} from "../../utils/StorageSlot.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. */ library ERC1967Utils { // We re-declare ERC-1967 events here because they can't be used directly from IERC1967. // This will be fixed in Solidity 0.8.21. At that point we should remove these events. /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev The `implementation` of the proxy is invalid. */ error ERC1967InvalidImplementation(address implementation); /** * @dev The `admin` of the proxy is invalid. */ error ERC1967InvalidAdmin(address admin); /** * @dev The `beacon` of the proxy is invalid. */ error ERC1967InvalidBeacon(address beacon); /** * @dev An upgrade function sees `msg.value > 0` that may be lost. */ error ERC1967NonPayable(); /** * @dev Returns the current implementation address. */ function getImplementation() internal view returns (address) { return StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { if (newImplementation.code.length == 0) { revert ERC1967InvalidImplementation(newImplementation); } StorageSlot.getAddressSlot(IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Performs implementation upgrade with additional setup call if data is nonempty. * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected * to avoid stuck value in the contract. * * Emits an {IERC1967-Upgraded} event. */ function upgradeToAndCall(address newImplementation, bytes memory data) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); if (data.length > 0) { Address.functionDelegateCall(newImplementation, data); } else { _checkNonPayable(); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Returns the current admin. * * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using * the https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call. * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103` */ function getAdmin() internal view returns (address) { return StorageSlot.getAddressSlot(ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { if (newAdmin == address(0)) { revert ERC1967InvalidAdmin(address(0)); } StorageSlot.getAddressSlot(ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {IERC1967-AdminChanged} event. */ function changeAdmin(address newAdmin) internal { emit AdminChanged(getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is the keccak-256 hash of "eip1967.proxy.beacon" subtracted by 1. */ // solhint-disable-next-line private-vars-leading-underscore bytes32 internal constant BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Returns the current beacon. */ function getBeacon() internal view returns (address) { return StorageSlot.getAddressSlot(BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { if (newBeacon.code.length == 0) { revert ERC1967InvalidBeacon(newBeacon); } StorageSlot.getAddressSlot(BEACON_SLOT).value = newBeacon; address beaconImplementation = IBeacon(newBeacon).implementation(); if (beaconImplementation.code.length == 0) { revert ERC1967InvalidImplementation(beaconImplementation); } } /** * @dev Change the beacon and trigger a setup call if data is nonempty. * This function is payable only if the setup call is performed, otherwise `msg.value` is rejected * to avoid stuck value in the contract. * * Emits an {IERC1967-BeaconUpgraded} event. * * CAUTION: Invoking this function has no effect on an instance of {BeaconProxy} since v5, since * it uses an immutable beacon without looking at the value of the ERC-1967 beacon slot for * efficiency. */ function upgradeBeaconToAndCall(address newBeacon, bytes memory data) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0) { Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data); } else { _checkNonPayable(); } } /** * @dev Reverts if `msg.value` is not zero. It can be used to avoid `msg.value` stuck in the contract * if an upgrade doesn't perform an initialization call. */ function _checkNonPayable() private { if (msg.value > 0) { revert ERC1967NonPayable(); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/Proxy.sol) pragma solidity ^0.8.20; /** * @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 internal call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { 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 overridden 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 internal call site, it will return directly to the external caller. */ function _fallback() internal virtual { _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(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/transparent/ProxyAdmin.sol) pragma solidity ^0.8.20; import {ITransparentUpgradeableProxy} from "./TransparentUpgradeableProxy.sol"; import {Ownable} from "../../access/Ownable.sol"; /** * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}. */ contract ProxyAdmin is Ownable { /** * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgrade(address)` * and `upgradeAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called, * while `upgradeAndCall` will invoke the `receive` function if the second argument is the empty byte string. * If the getter returns `"5.0.0"`, only `upgradeAndCall(address,bytes)` is present, and the second argument must * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function * during an upgrade. */ string public constant UPGRADE_INTERFACE_VERSION = "5.0.0"; /** * @dev Sets the initial owner who can perform upgrades. */ constructor(address initialOwner) Ownable(initialOwner) {} /** * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. * See {TransparentUpgradeableProxy-_dispatchUpgradeToAndCall}. * * Requirements: * * - This contract must be the admin of `proxy`. * - If `data` is empty, `msg.value` must be zero. */ function upgradeAndCall( ITransparentUpgradeableProxy proxy, address implementation, bytes memory data ) public payable virtual onlyOwner { proxy.upgradeToAndCall{value: msg.value}(implementation, data); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/transparent/TransparentUpgradeableProxy.sol) pragma solidity ^0.8.20; import {ERC1967Utils} from "../ERC1967/ERC1967Utils.sol"; import {ERC1967Proxy} from "../ERC1967/ERC1967Proxy.sol"; import {IERC1967} from "../../interfaces/IERC1967.sol"; import {ProxyAdmin} from "./ProxyAdmin.sol"; /** * @dev Interface for {TransparentUpgradeableProxy}. In order to implement transparency, {TransparentUpgradeableProxy} * does not implement this interface directly, and its upgradeability mechanism is implemented by an internal dispatch * mechanism. The compiler is unaware that these functions are implemented by {TransparentUpgradeableProxy} and will not * include them in the ABI so this interface must be used to interact with it. */ interface ITransparentUpgradeableProxy is IERC1967 { function upgradeToAndCall(address, bytes calldata) external payable; } /** * @dev This contract implements a proxy that is upgradeable through an associated {ProxyAdmin} instance. * * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector * clashing], which can potentially be used in an attack, this contract uses the * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two * things that go hand in hand: * * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if * that call matches the {ITransparentUpgradeableProxy-upgradeToAndCall} function exposed by the proxy itself. * 2. If the admin calls the proxy, it can call the `upgradeToAndCall` function but any other call won't be forwarded to * the implementation. If the admin tries to call a function on the implementation it will fail with an error indicating * the proxy admin cannot fallback to the target implementation. * * These properties mean that the admin account can only be used for upgrading the proxy, so it's best if it's a * dedicated account that is not used for anything else. This will avoid headaches due to sudden errors when trying to * call a function from the proxy implementation. For this reason, the proxy deploys an instance of {ProxyAdmin} and * allows upgrades only if they come through it. You should think of the `ProxyAdmin` instance as the administrative * interface of the proxy, including the ability to change who can trigger upgrades by transferring ownership. * * NOTE: The real interface of this proxy is that defined in `ITransparentUpgradeableProxy`. This contract does not * inherit from that interface, and instead `upgradeToAndCall` is implicitly implemented using a custom dispatch * mechanism in `_fallback`. Consequently, the compiler will not produce an ABI for this contract. This is necessary to * fully implement transparency without decoding reverts caused by selector clashes between the proxy and the * implementation. * * NOTE: This proxy does not inherit from {Context} deliberately. The {ProxyAdmin} of this contract won't send a * meta-transaction in any way, and any other meta-transaction setup should be made in the implementation contract. * * IMPORTANT: This contract avoids unnecessary storage reads by setting the admin only during construction as an * immutable variable, preventing any changes thereafter. However, the admin slot defined in ERC-1967 can still be * overwritten by the implementation logic pointed to by this proxy. In such cases, the contract may end up in an * undesirable state where the admin slot is different from the actual admin. * * WARNING: It is not recommended to extend this contract to add additional external functions. If you do so, the * compiler will not check that there are no selector conflicts, due to the note above. A selector clash between any new * function and the functions declared in {ITransparentUpgradeableProxy} will be resolved in favor of the new one. This * could render the `upgradeToAndCall` function inaccessible, preventing upgradeability and compromising transparency. */ contract TransparentUpgradeableProxy is ERC1967Proxy { // An immutable address for the admin to avoid unnecessary SLOADs before each call // at the expense of removing the ability to change the admin once it's set. // This is acceptable if the admin is always a ProxyAdmin instance or similar contract // with its own ability to transfer the permissions to another account. address private immutable _admin; /** * @dev The proxy caller is the current admin, and can't fallback to the proxy target. */ error ProxyDeniedAdminAccess(); /** * @dev Initializes an upgradeable proxy managed by an instance of a {ProxyAdmin} with an `initialOwner`, * backed by the implementation at `_logic`, and optionally initialized with `_data` as explained in * {ERC1967Proxy-constructor}. */ constructor(address _logic, address initialOwner, bytes memory _data) payable ERC1967Proxy(_logic, _data) { _admin = address(new ProxyAdmin(initialOwner)); // Set the storage value and emit an event for ERC-1967 compatibility ERC1967Utils.changeAdmin(_proxyAdmin()); } /** * @dev Returns the admin of this proxy. */ function _proxyAdmin() internal virtual returns (address) { return _admin; } /** * @dev If caller is the admin process the call internally, otherwise transparently fallback to the proxy behavior. */ function _fallback() internal virtual override { if (msg.sender == _proxyAdmin()) { if (msg.sig != ITransparentUpgradeableProxy.upgradeToAndCall.selector) { revert ProxyDeniedAdminAccess(); } else { _dispatchUpgradeToAndCall(); } } else { super._fallback(); } } /** * @dev Upgrade the implementation of the proxy. See {ERC1967Utils-upgradeToAndCall}. * * Requirements: * * - If `data` is empty, `msg.value` must be zero. */ function _dispatchUpgradeToAndCall() private { (address newImplementation, bytes memory data) = abi.decode(msg.data[4:], (address, bytes)); ERC1967Utils.upgradeToAndCall(newImplementation, data); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @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 or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * 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. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @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`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.20; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(newImplementation.code.length > 0); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } }
File 4 of 4: EthereumGateway
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializing { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(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"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol) pragma solidity ^0.8.0; /** * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified * proxy whose upgrades are fully controlled by the current implementation. */ interface IERC1822ProxiableUpgradeable { /** * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation * address. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. */ function proxiableUUID() external view returns (bytes32); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol) pragma solidity ^0.8.0; /** * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC. * * _Available since v4.8.3._ */ interface IERC1967Upgradeable { /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeaconUpgradeable { /** * @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 // OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol) pragma solidity ^0.8.2; import "../beacon/IBeaconUpgradeable.sol"; import "../../interfaces/IERC1967Upgradeable.sol"; import "../../interfaces/draft-IERC1822Upgradeable.sol"; import "../../utils/AddressUpgradeable.sol"; import "../../utils/StorageSlotUpgradeable.sol"; import {Initializable} from "../utils/Initializable.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ */ abstract contract ERC1967UpgradeUpgradeable is Initializable, IERC1967Upgradeable { // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; function __ERC1967Upgrade_init() internal onlyInitializing { } function __ERC1967Upgrade_init_unchained() internal onlyInitializing { } /** * @dev Returns the current implementation address. */ function _getImplementation() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Perform implementation upgrade * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal { _upgradeTo(newImplementation); if (data.length > 0 || forceCall) { AddressUpgradeable.functionDelegateCall(newImplementation, data); } } /** * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal { // Upgrades from old implementations will perform a rollback test. This test requires the new // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing // this special case will break upgrade paths from old UUPS implementation to new ones. if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) { _setImplementation(newImplementation); } else { try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) { require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID"); } catch { revert("ERC1967Upgrade: new implementation is not UUPS"); } _upgradeToAndCall(newImplementation, data, forceCall); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Returns the current admin. */ function _getAdmin() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. */ function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @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 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Returns the current beacon. */ function _getBeacon() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract"); require( AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon; } /** * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. */ function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 || forceCall) { AddressUpgradeable.functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data); } } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a * constructor. * * Emits an {Initialized} event. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: setting the version to 255 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized != type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint8) { return _initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _initializing; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol) pragma solidity ^0.8.0; import "../../interfaces/draft-IERC1822Upgradeable.sol"; import "../ERC1967/ERC1967UpgradeUpgradeable.sol"; import {Initializable} from "./Initializable.sol"; /** * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy. * * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing * `UUPSUpgradeable` with a custom implementation of upgrades. * * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ */ abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable { /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment address private immutable __self = address(this); /** * @dev Check that the execution is being performed through a delegatecall call and that the execution context is * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to * fail. */ modifier onlyProxy() { require(address(this) != __self, "Function must be called through delegatecall"); require(_getImplementation() == __self, "Function must be called through active proxy"); _; } /** * @dev Check that the execution is not being performed through a delegate call. This allows a function to be * callable on the implementing contract but not through proxies. */ modifier notDelegated() { require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall"); _; } function __UUPSUpgradeable_init() internal onlyInitializing { } function __UUPSUpgradeable_init_unchained() internal onlyInitializing { } /** * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the * implementation. It is used to validate the implementation's compatibility when performing an upgrade. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier. */ function proxiableUUID() external view virtual override notDelegated returns (bytes32) { return _IMPLEMENTATION_SLOT; } /** * @dev Upgrade the implementation of the proxy to `newImplementation`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. * * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function upgradeTo(address newImplementation) public virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, new bytes(0), false); } /** * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call * encoded in `data`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. * * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, data, true); } /** * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by * {upgradeTo} and {upgradeToAndCall}. * * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}. * * ```solidity * function _authorizeUpgrade(address) internal override onlyOwner {} * ``` */ function _authorizeUpgrade(address newImplementation) internal virtual; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[49] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 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://consensys.net/diligence/blog/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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol) pragma solidity ^0.8.0; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._ * _Available since v4.9 for `string`, `bytes`._ */ library StorageSlotUpgradeable { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol"; import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import {IArbitrator} from "../../interfaces/IArbitrator.sol"; import {L2BaseGateway} from "../L2BaseGateway.sol"; import {L1BaseGateway} from "../L1BaseGateway.sol"; contract EthereumGateway is L1BaseGateway, L2BaseGateway, OwnableUpgradeable, UUPSUpgradeable, ReentrancyGuardUpgradeable { constructor(IArbitrator _arbitrator, address _zkLink) L1BaseGateway(_arbitrator) L2BaseGateway(_zkLink) { _disableInitializers(); } function initialize() external initializer { __Ownable_init(); __UUPSUpgradeable_init(); __ReentrancyGuard_init(); } function _authorizeUpgrade(address newImplementation) internal override onlyOwner {} function getRemoteGateway() external view returns (address) { return address(this); } function sendMessage(uint256 _value, bytes calldata _callData, bytes calldata) external payable onlyArbitrator { require(msg.value == _value, "Invalid value"); // solhint-disable-next-line avoid-low-level-calls (bool success, ) = ZKLINK.call{value: _value}(_callData); require(success, "Call zkLink failed"); } function sendMessage(uint256 _value, bytes calldata _callData) external payable override onlyZkLink { require(msg.value == _value, "Invalid value"); // Forward message to arbitrator ARBITRATOR.receiveMessage{value: _value}(_value, _callData); emit L2GatewayMessageSent(_value, _callData); } } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {IArbitrator} from "../interfaces/IArbitrator.sol"; import {IL1Gateway} from "../interfaces/IL1Gateway.sol"; abstract contract L1BaseGateway is IL1Gateway { /// @notice The arbitrator to confirm synchronization IArbitrator public immutable ARBITRATOR; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; /// @dev Modifier to make sure the caller is the known arbitrator. modifier onlyArbitrator() { require(msg.sender == address(ARBITRATOR), "Not arbitrator"); _; } constructor(IArbitrator _arbitrator) { ARBITRATOR = _arbitrator; } } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {IL2Gateway} from "../interfaces/IL2Gateway.sol"; abstract contract L2BaseGateway is IL2Gateway { /// @notice The zkLink contract address public immutable ZKLINK; /** * @dev This empty reserved space is put in place to allow future versions to add new * variables without shifting down storage in the inheritance chain. * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps */ uint256[50] private __gap; event L2GatewayMessageSent(uint256 value, bytes callData); /// @dev Ensure withdraw come from zkLink modifier onlyZkLink() { require(msg.sender == ZKLINK, "Not zkLink contract"); _; } constructor(address _zkLink) { ZKLINK = _zkLink; } } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {IL1Gateway} from "./IL1Gateway.sol"; interface IArbitrator { /// @notice Receive message from one L1 gateway to another L1 gateway /// @param _value The msg value /// @param _callData The call data function receiveMessage(uint256 _value, bytes calldata _callData) external payable; /// @notice Forward message from one L1 gateway to another L1 gateway /// @param _gateway The message source gateway /// @param _value The msg value /// @param _callData The call data /// @param _adapterParams Some params need to call canonical message service function forwardMessage( IL1Gateway _gateway, uint256 _value, bytes calldata _callData, bytes calldata _adapterParams ) external payable; } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface IGateway { /// @return Remote gateway function getRemoteGateway() external view returns (address); } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {IGateway} from "./IGateway.sol"; interface IL1Gateway is IGateway { /// @notice Send message to remote gateway /// @param _value The msg value /// @param _callData The call data /// @param _adapterParams Some params need to call canonical message service function sendMessage(uint256 _value, bytes calldata _callData, bytes calldata _adapterParams) external payable; } // SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import {IGateway} from "./IGateway.sol"; interface IL2Gateway is IGateway { /// @notice Send message to remote gateway /// @param _value The msg value /// @param _callData The call data function sendMessage(uint256 _value, bytes calldata _callData) external payable; }