Description:
Multi-signature wallet contract requiring multiple confirmations for transaction execution.
Blockchain: Ethereum
Source Code: View Code On The Blockchain
Solidity Source Code:
{{
"language": "Solidity",
"sources": {
"lib/ERC721A/contracts/IERC721A.sol": {
"content": "// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.3.0
// Creator: Chiru Labs
pragma solidity ^0.8.4;
/**
* @dev Interface of ERC721A.
*/
interface IERC721A {
/**
* The caller must own the token or be an approved operator.
*/
error ApprovalCallerNotOwnerNorApproved();
/**
* The token does not exist.
*/
error ApprovalQueryForNonexistentToken();
/**
* Cannot query the balance for the zero address.
*/
error BalanceQueryForZeroAddress();
/**
* Cannot mint to the zero address.
*/
error MintToZeroAddress();
/**
* The quantity of tokens minted must be more than zero.
*/
error MintZeroQuantity();
/**
* The token does not exist.
*/
error OwnerQueryForNonexistentToken();
/**
* The caller must own the token or be an approved operator.
*/
error TransferCallerNotOwnerNorApproved();
/**
* The token must be owned by `from`.
*/
error TransferFromIncorrectOwner();
/**
* Cannot safely transfer to a contract that does not implement the
* ERC721Receiver interface.
*/
error TransferToNonERC721ReceiverImplementer();
/**
* Cannot transfer to the zero address.
*/
error TransferToZeroAddress();
/**
* The token does not exist.
*/
error URIQueryForNonexistentToken();
/**
* The `quantity` minted with ERC2309 exceeds the safety limit.
*/
error MintERC2309QuantityExceedsLimit();
/**
* The `extraData` cannot be set on an unintialized ownership slot.
*/
error OwnershipNotInitializedForExtraData();
/**
* The `tokenIds` must be strictly ascending.
*/
error TokenIdsNotStrictlyAscending();
/**
* `_sequentialUpTo()` must be greater than `_startTokenId()`.
*/
error SequentialUpToTooSmall();
/**
* The `tokenId` of a sequential mint exceeds `_sequentialUpTo()`.
*/
error SequentialMintExceedsLimit();
/**
* Spot minting requires a `tokenId` greater than `_sequentialUpTo()`.
*/
error SpotMintTokenIdTooSmall();
/**
* Cannot mint over a token that already exists.
*/
error TokenAlreadyExists();
/**
* The feature is not compatible with spot mints.
*/
error NotCompatibleWithSpotMints();
// =============================================================
// STRUCTS
// =============================================================
struct TokenOwnership {
// The address of the owner.
address addr;
// Stores the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
// Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
uint24 extraData;
}
// =============================================================
// TOKEN COUNTERS
// =============================================================
/**
* @dev Returns the total number of tokens in existence.
* Burned tokens will reduce the count.
* To get the total number of tokens minted, please see {_totalMinted}.
*/
function totalSupply() external view returns (uint256);
// =============================================================
// IERC165
// =============================================================
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
* to learn more about how these ids are created.
*
* This function call must use less than 30000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
// =============================================================
// IERC721
// =============================================================
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables
* (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in `owner`'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`,
* checking first that contract recipients are aware of the ERC721 protocol
* to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move
* this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external payable;
/**
* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external payable;
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom}
* whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token
* by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external payable;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the
* zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external payable;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom}
* for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
// =============================================================
// IERC721Metadata
// =============================================================
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
// =============================================================
// IERC2309
// =============================================================
/**
* @dev Emitted when tokens in `fromTokenId` to `toTokenId`
* (inclusive) is transferred from `from` to `to`, as defined in the
* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
*
* See {_mintERC2309} for more details.
*/
event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}
"
},
"lib/ERC721A/contracts/extensions/IERC721ABatchTransferable.sol": {
"content": "// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs
pragma solidity ^0.8.4;
import '../IERC721A.sol';
/**
* @dev Interface of ERC721ABatchTransferable.
*/
interface IERC721ABatchTransferable is IERC721A {
/**
* @dev Transfers `tokenIds` in batch from `from` to `to`. See {ERC721A-_batchTransferFrom}.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenIds` tokens must be owned by `from`.
* - If the caller is not `from`, it must be approved to move these tokens
* by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event for each transfer.
*/
function batchTransferFrom(
address from,
address to,
uint256[] memory tokenIds
) external payable;
/**
* @dev Equivalent to `safeBatchTransferFrom(from, to, tokenIds, '')`.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory tokenIds
) external payable;
/**
* @dev Safely transfers `tokenIds` in batch from `from` to `to`. See {ERC721A-_safeBatchTransferFrom}.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenIds` tokens must be owned by `from`.
* - If the caller is not `from`, it must be approved to move these tokens
* by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called for each transferred token.
*
* Emits a {Transfer} event for each transfer.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory tokenIds,
bytes memory _data
) external payable;
}
"
},
"lib/ERC721A/contracts/interfaces/IERC721ABatchTransferable.sol": {
"content": "// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs
pragma solidity ^0.8.4;
import '../extensions/IERC721ABatchTransferable.sol';
"
},
"lib/openzeppelin-contracts-upgradeable/contracts/access/Ownable2StepUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)
pragma solidity ^0.8.20;
import {OwnableUpgradeable} from "./OwnableUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* The initial owner is specified at deployment time in the constructor for `Ownable`. This
* can later be changed with {transferOwnership} and {acceptOwnership}.
*
* This module is used through inheritance. It will make available all functions
* from parent (Ownable).
*/
abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable {
/// @custom:storage-location erc7201:openzeppelin.storage.Ownable2Step
struct Ownable2StepStorage {
address _pendingOwner;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable2Step")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant Ownable2StepStorageLocation = 0x237e158222e3e6968b72b9db0d8043aacf074ad9f650f0d1606b4d82ee432c00;
function _getOwnable2StepStorage() private pure returns (Ownable2StepStorage storage $) {
assembly {
$.slot := Ownable2StepStorageLocation
}
}
event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);
function __Ownable2Step_init() internal onlyInitializing {
}
function __Ownable2Step_init_unchained() internal onlyInitializing {
}
/**
* @dev Returns the address of the pending owner.
*/
function pendingOwner() public view virtual returns (address) {
Ownable2StepStorage storage $ = _getOwnable2StepStorage();
return $._pendingOwner;
}
/**
* @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual override onlyOwner {
Ownable2StepStorage storage $ = _getOwnable2StepStorage();
$._pendingOwner = newOwner;
emit OwnershipTransferStarted(owner(), newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual override {
Ownable2StepStorage storage $ = _getOwnable2StepStorage();
delete $._pendingOwner;
super._transferOwnership(newOwner);
}
/**
* @dev The new owner accepts the ownership transfer.
*/
function acceptOwnership() public virtual {
address sender = _msgSender();
if (pendingOwner() != sender) {
revert OwnableUnauthorizedAccount(sender);
}
_transferOwnership(sender);
}
}
"
},
"lib/openzeppelin-contracts-upgradeable/contracts/access/OwnableUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.20;
import {ContextUpgradeable} from "../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.
*
* 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 OwnableUpgradeable is Initializable, ContextUpgradeable {
/// @custom:storage-location erc7201:openzeppelin.storage.Ownable
struct OwnableStorage {
address _owner;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;
function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
assembly {
$.slot := OwnableStorageLocation
}
}
/**
* @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.
*/
function __Ownable_init(address initialOwner) internal onlyInitializing {
__Ownable_init_unchained(initialOwner);
}
function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
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) {
OwnableStorage storage $ = _getOwnableStorage();
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 {
OwnableStorage storage $ = _getOwnableStorage();
address oldOwner = $._owner;
$._owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
"
},
"lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.20;
/**
* @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 Storage of the initializable contract.
*
* It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
* when using with upgradeable contracts.
*
* @custom:storage-location erc7201:openzeppelin.storage.Initializable
*/
struct InitializableStorage {
/**
* @dev Indicates that the contract has been initialized.
*/
uint64 _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool _initializing;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;
/**
* @dev The contract is already initialized.
*/
error InvalidInitialization();
/**
* @dev The contract is not initializing.
*/
error NotInitializing();
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint64 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 in the context of a constructor an `initializer` may be invoked any
* number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
* production.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
// Cache values to avoid duplicated sloads
bool isTopLevelCall = !$._initializing;
uint64 initialized = $._initialized;
// Allowed calls:
// - initialSetup: the contract is not in the initializing state and no previous version was
// initialized
// - construction: the contract is initialized at version 1 (no reininitialization) and the
// current contract is just being deployed
bool initialSetup = initialized == 0 && isTopLevelCall;
bool construction = initialized == 1 && address(this).code.length == 0;
if (!initialSetup && !construction) {
revert InvalidInitialization();
}
$._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 2**64 - 1 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint64 version) {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing || $._initialized >= version) {
revert InvalidInitialization();
}
$._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() {
_checkInitializing();
_;
}
/**
* @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
*/
function _checkInitializing() internal view virtual {
if (!_isInitializing()) {
revert NotInitializing();
}
}
/**
* @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 {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing) {
revert InvalidInitialization();
}
if ($._initialized != type(uint64).max) {
$._initialized = type(uint64).max;
emit Initialized(type(uint64).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint64) {
return _getInitializableStorage()._initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _getInitializableStorage()._initializing;
}
/**
* @dev Returns a pointer to the storage namespace.
*/
// solhint-disable-next-line var-name-mixedcase
function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
assembly {
$.slot := INITIALIZABLE_STORAGE
}
}
}
"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/ContextUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
pragma solidity ^0.8.20;
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;
}
}
"
},
"lib/openzeppelin-contracts/contracts/interfaces/IERC1271.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1271.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC1271 standard signature validation method for
* contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
*/
interface IERC1271 {
/**
* @dev Should return whether the signature provided is valid for the provided data
* @param hash Hash of the data to be signed
* @param signature Signature byte array associated with _data
*/
function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}
"
},
"lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.20;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be
* reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
"
},
"lib/openzeppelin-contracts/contracts/token/ERC721/utils/ERC721Holder.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/utils/ERC721Holder.sol)
pragma solidity ^0.8.20;
import {IERC721Receiver} from "../IERC721Receiver.sol";
/**
* @dev Implementation of the {IERC721Receiver} interface.
*
* Accepts all token transfers.
* Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or
* {IERC721-setApprovalForAll}.
*/
abstract contract ERC721Holder is IERC721Receiver {
/**
* @dev See {IERC721Receiver-onERC721Received}.
*
* Always returns `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(address, address, uint256, bytes memory) public virtual returns (bytes4) {
return this.onERC721Received.selector;
}
}
"
},
"lib/openzeppelin-contracts/contracts/utils/structs/EnumerableSet.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.
pragma solidity ^0.8.20;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```solidity
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*
* [WARNING]
* ====
* Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
* unusable.
* See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
*
* In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
* array of EnumerableSet.
* ====
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position is the index of the value in the `values` array plus 1.
// Position 0 is used to mean a value is not in the set.
mapping(bytes32 value => uint256) _positions;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._positions[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We cache the value's position to prevent multiple reads from the same storage slot
uint256 position = set._positions[value];
if (position != 0) {
// Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 valueIndex = position - 1;
uint256 lastIndex = set._values.length - 1;
if (valueIndex != lastIndex) {
bytes32 lastValue = set._values[lastIndex];
// Move the lastValue to the index where the value to delete is
set._values[valueIndex] = lastValue;
// Update the tracked position of the lastValue (that was just moved)
set._positions[lastValue] = position;
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the tracked position for the deleted slot
delete set._positions[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._positions[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function _values(Set storage set) private view returns (bytes32[] memory) {
return set._values;
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
bytes32[] memory store = _values(set._inner);
bytes32[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(AddressSet storage set) internal view returns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(UintSet storage set) internal view returns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
}
"
},
"lib/wormhole-solidity-sdk/src/interfaces/IWormhole.sol": {
"content": "// contracts/Messages.sol
// SPDX-License-Identifier: Apache 2
pragma solidity ^0.8.0;
interface IWormhole {
struct GuardianSet {
address[] keys;
uint32 expirationTime;
}
struct Signature {
bytes32 r;
bytes32 s;
uint8 v;
uint8 guardianIndex;
}
struct VM {
uint8 version;
uint32 timestamp;
uint32 nonce;
uint16 emitterChainId;
bytes32 emitterAddress;
uint64 sequence;
uint8 consistencyLevel;
bytes payload;
uint32 guardianSetIndex;
Signature[] signatures;
bytes32 hash;
}
struct ContractUpgrade {
bytes32 module;
uint8 action;
uint16 chain;
address newContract;
}
struct GuardianSetUpgrade {
bytes32 module;
uint8 action;
uint16 chain;
GuardianSet newGuardianSet;
uint32 newGuardianSetIndex;
}
struct SetMessageFee {
bytes32 module;
uint8 action;
uint16 chain;
uint256 messageFee;
}
struct TransferFees {
bytes32 module;
uint8 action;
uint16 chain;
uint256 amount;
bytes32 recipient;
}
struct RecoverChainId {
bytes32 module;
uint8 action;
uint256 evmChainId;
uint16 newChainId;
}
event LogMessagePublished(
address indexed sender, uint64 sequence, uint32 nonce, bytes payload, uint8 consistencyLevel
);
event ContractUpgraded(address indexed oldContract, address indexed newContract);
event GuardianSetAdded(uint32 indexed index);
function publishMessage(uint32 nonce, bytes memory payload, uint8 consistencyLevel)
external
payable
returns (uint64 sequence);
function initialize() external;
function parseAndVerifyVM(bytes calldata encodedVM)
external
view
returns (VM memory vm, bool valid, string memory reason);
function verifyVM(VM memory vm) external view returns (bool valid, string memory reason);
function verifySignatures(bytes32 hash, Signature[] memory signatures, GuardianSet memory guardianSet)
external
pure
returns (bool valid, string memory reason);
function parseVM(bytes memory encodedVM) external pure returns (VM memory vm);
function quorum(uint256 numGuardians) external pure returns (uint256 numSignaturesRequiredForQuorum);
function getGuardianSet(uint32 index) external view returns (GuardianSet memory);
function getCurrentGuardianSetIndex() external view returns (uint32);
function getGuardianSetExpiry() external view returns (uint32);
function governanceActionIsConsumed(bytes32 hash) external view returns (bool);
function isInitialized(address impl) external view returns (bool);
function chainId() external view returns (uint16);
function isFork() external view returns (bool);
function governanceChainId() external view returns (uint16);
function governanceContract() external view returns (bytes32);
function messageFee() external view returns (uint256);
function evmChainId() external view returns (uint256);
function nextSequence(address emitter) external view returns (uint64);
function parseContractUpgrade(bytes memory encodedUpgrade) external pure returns (ContractUpgrade memory cu);
function parseGuardianSetUpgrade(bytes memory encodedUpgrade)
external
pure
returns (GuardianSetUpgrade memory gsu);
function parseSetMessageFee(bytes memory encodedSetMessageFee) external pure returns (SetMessageFee memory smf);
function parseTransferFees(bytes memory encodedTransferFees) external pure returns (TransferFees memory tf);
function parseRecoverChainId(bytes memory encodedRecoverChainId)
external
pure
returns (RecoverChainId memory rci);
function submitContractUpgrade(bytes memory _vm) external;
function submitSetMessageFee(bytes memory _vm) external;
function submitNewGuardianSet(bytes memory _vm) external;
function submitTransferFees(bytes memory _vm) external;
function submitRecoverChainId(bytes memory _vm) external;
}
"
},
"node_modules/@synthetixio/core-contracts/contracts/errors/AddressError.sol": {
"content": "//SPDX-License-Identifier: MIT
pragma solidity >=0.8.11 <0.9.0;
/**
* @title Library for address related errors.
*/
library AddressError {
/**
* @dev Thrown when a zero address was passed as a function parameter (0x0000000000000000000000000000000000000000).
*/
error ZeroAddress();
/**
* @dev Thrown when an address representing a contract is expected, but no code is found at the address.
* @param contr The address that was expected to be a contract.
*/
error NotAContract(address contr);
}
"
},
"node_modules/@synthetixio/core-contracts/contracts/errors/ChangeError.sol": {
"content": "//SPDX-License-Identifier: MIT
pragma solidity >=0.8.11 <0.9.0;
/**
* @title Library for change related errors.
*/
library ChangeError {
/**
* @dev Thrown when a change is expected but none is detected.
*/
error NoChange();
}
"
},
"node_modules/@synthetixio/core-contracts/contracts/interfaces/IUUPSImplementation.sol": {
"content": "//SPDX-License-Identifier: MIT
pragma solidity >=0.8.11 <0.9.0;
/**
* @title Contract to be used as the implementation of a Universal Upgradeable Proxy Standard (UUPS) proxy.
*
* Important: A UUPS proxy requires its upgradeability functions to be in the implementation as opposed to the proxy. This means that if the proxy is upgraded to an implementation that does not support this interface, it will no longer be upgradeable.
*/
interface IUUPSImplementation {
/**
* @notice Thrown when an incoming implementation will not be able to receive future upgrades.
*/
error ImplementationIsSterile(address implementation);
/**
* @notice Thrown intentionally when testing future upgradeability of an implementation.
*/
error UpgradeSimulationFailed();
/**
* @notice Emitted when the implementation of the proxy has been upgraded.
* @param self The address of the proxy whose implementation was upgraded.
* @param implementation The address of the proxy's new implementation.
*/
event Upgraded(address indexed self, address implementation);
/**
* @notice Allows the proxy to be upgraded to a new implementation.
* @param newImplementation The address of the proxy's new implementation.
* @dev Will revert if `newImplementation` is not upgradeable.
* @dev The implementation of this function needs to be protected by some sort of access control such as `onlyOwner`.
*/
function upgradeTo(address newImplementation) external;
/**
* @notice Function used to determine if a new implementation will be able to receive future upgrades in `upgradeTo`.
* @param newImplementation The address of the new implementation being tested for future upgradeability.
* @dev This function will always revert, but will revert with different error messages. The function `upgradeTo` uses this error to determine the future upgradeability of the implementation in question.
*/
function simulateUpgradeTo(address newImplementation) external;
/**
* @notice Retrieves the current implementation of the proxy.
* @return The address of the current implementation.
*/
function getImplementation() external view returns (address);
}
"
},
"node_modules/@synthetixio/core-contracts/contracts/proxy/ProxyStorage.sol": {
"content": "//SPDX-License-Identifier: MIT
pragma solidity >=0.8.11 <0.9.0;
contract ProxyStorage {
bytes32 private constant _SLOT_PROXY_STORAGE =
keccak256(abi.encode("io.synthetix.core-contracts.Proxy"));
struct ProxyStore {
address implementation;
bool simulatingUpgrade;
}
function _proxyStore() internal pure returns (ProxyStore storage store) {
bytes32 s = _SLOT_PROXY_STORAGE;
assembly {
store.slot := s
}
}
}
"
},
"node_modules/@synthetixio/core-contracts/contracts/proxy/UUPSImplementation.sol": {
"content": "//SPDX-License-Identifier: MIT
pragma solidity >=0.8.11 <0.9.0;
import "../interfaces/IUUPSImplementation.sol";
import "../errors/AddressError.sol";
import "../errors/ChangeError.sol";
import "../utils/AddressUtil.sol";
import "./ProxyStorage.sol";
abstract contract UUPSImplementation is IUUPSImplementation, ProxyStorage {
/**
* @inheritdoc IUUPSImplementation
*/
function simulateUpgradeTo(address newImplementation) public override {
ProxyStore storage store = _proxyStore();
store.simulatingUpgrade = true;
address currentImplementation = store.implementation;
store.implementation = newImplementation;
(bool rollbackSuccessful, ) = newImplementation.delegatecall(
abi.encodeCall(this.upgradeTo, (currentImplementation))
);
if (!rollbackSuccessful || _proxyStore().implementation != currentImplementation) {
revert UpgradeSimulationFailed();
}
store.simulatingUpgrade = false;
// solhint-disable-next-line reason-string
revert();
}
/**
* @inheritdoc IUUPSImplementation
*/
function getImplementation() external view override returns (address) {
return _proxyStore().implementation;
}
function _upgradeTo(address newImplementation) internal virtual {
if (newImplementation == address(0)) {
revert AddressError.ZeroAddress();
}
if (!AddressUtil.isContract(newImplementation)) {
revert AddressError.NotAContract(newImplementation);
}
ProxyStore storage store = _proxyStore();
if (newImplementation == store.implementation) {
revert ChangeError.NoChange();
}
if (!store.simulatingUpgrade && _implementationIsSterile(newImplementation)) {
revert ImplementationIsSterile(newImplementation);
}
store.implementation = newImplementation;
emit Upgraded(address(this), newImplementation);
}
function _implementationIsSterile(
address candidateImplementation
) internal virtual returns (bool) {
(bool simulationReverted, bytes memory simulationResponse) = address(this).delegatecall(
abi.encodeCall(this.simulateUpgradeTo, (candidateImplementation))
);
return
!simulationReverted &&
keccak256(abi.encodePacked(simulationResponse)) ==
keccak256(abi.encodePacked(UpgradeSimulationFailed.selector));
}
}
"
},
"node_modules/@synthetixio/core-contracts/contracts/utils/AddressUtil.sol": {
"content": "//SPDX-License-Identifier: MIT
pragma solidity >=0.8.11 <0.9.0;
library AddressUtil {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
}
"
},
"src/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;
/**
* @title Initializable module
*/
library Initializable {
// ------- Storage -------
struct InitializableStorageData {
bool initialized;
}
error AlreadyInitialized();
error NotInitialized();
/**
* @dev Returns the account stored at the specified account id.
*/
function getStorage() internal pure returns (InitializableStorageData storage data) {
bytes32 slot = keccak256(abi.encode("io.infinex.InitializableStorage"));
// solhint-disable-next-line no-inline-assembly
assembly {
data.slot := slot
}
}
// ------- Implementation -------
function initialize() internal {
InitializableStorageData storage data = getStorage();
// Note: We don't use onlyUninitialized here to save gas by preventing a double call to load().
if (data.initialized) revert AlreadyInitialized();
data.initialized = true;
}
modifier onlyInitialized() {
if (!getStorage().initialized) revert NotInitialized();
_;
}
modifier onlyUninitialized() {
if (getStorage().initialized) revert AlreadyInitialized();
_;
}
}
"
},
"src/forwarder/ERC2771BaseUpgradeable.sol": {
"content": "// c=<
// |
// | ////\ 1@2
// @@ | /___\** @@@2 @@@@@@@@@@@@@@@@@@@@@@
// @@@ | |~L~ |* @@@@@@ @@@ @@@@@ @@@@ @@@ @@@@ @@@ @@@@@@@@ @@@@ @@@@ @@@ @@@@@@@@@ @@@@ @@@@
// @@@@@ | \=_/8 @@@@1@@ @@@ @@@@@ @@@@ @@@@ @@@ @@@@@ @@@ @@@@@@@@@ @@@@ @@@@@ @@@@ @@@@@@@@@ @@@@ @@@@
// @@@@@@| _ /| |\__ @@@@@@@@2 @@@ @@@@@ @@@@ @@@@ @@@ @@@@@@@ @@@ @@@@ @@@@ @@@@@@ @@@@ @@@ @@@@@@@
// 1@@@@@@|\ \___/) @@1@@@@@2 ~~~ ~~~~~ @@@@ ~~@@ ~~~ ~~~~~~~~~~~ ~~~~ ~~~~ ~~~~~~~~~~~ ~@@ @@@@@
// 2@@@@@ | \ \ / | @@@@@@2 @@@ @@@@@ @@@@ @@@@ @@@ @@@@@@@@@@@ @@@@@@@@@ @@@@ @@@@@@@@@@@ @@@@@@@@@ @@@@@
// 2@@@@ |_ > <|__ @@1@12 @@@ @@@@@ @@@@ @@@@ @@@ @@@@ @@@@@@ @@@@ @@@@ @@@@ @@@@@@ @@@ @@@@@@@
// @@@@ / _| / \/ \ @@1@ @@@ @@@ @@@@ @@@@ @@@ @@@@ @@@@@ @@@@ @@@@ @@@@ @@@@@ @@@@@@@@@ @@@@ @@@@
// @@ / |^\/ | | @@1 @@@ @@@@ @@@@ @@@ @@@@ @@@ @@@@ @@@@ @@@ @@@@ @@@@@@@@@ @@@@ @@@@
// / / ---- \ \\\= @@ @@@@@@@@@@@@@@@@@@@@@@
// \___/ -------- ~~ @@@
// @@ | | | | -- @@
// ————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;
import { ERC2771Context } from "src/forwarder/ERC2771Context.sol";
import { IERC2771BaseUpgradeable } from "src/interfaces/forwarder/IERC2771BaseUpgradeable.sol";
abstract contract ERC2771BaseUpgradeable is IERC2771BaseUpgradeable {
/*///////////////////////////////////////////////////////////////
VIEW FUNCTIONS
///////////////////////////////////////////////////////////////*/
/**
* @notice Checks if a forwarder is trusted
* @param _trustedForwarder The address of the forwarder
* @return A boolean indicating if the forwarder is trusted or not
*/
function isTrustedForwarder(address _trustedForwarder) external view returns (bool) {
return ERC2771Context.isTrustedForwarder(_trustedForwarder);
}
/**
* @notice Gets the list of trusted forwarders
* @return An array of trusted forwarders
*/
function trustedForwarders() external view returns (address[] memory) {
return ERC2771Context.trustedForwarder();
}
/*///////////////////////////////////////////////////////////////
MUTATIVE FUNCTIONS
///////////////////////////////////////////////////////////////*/
/**
* @notice Adds a trusted forwarder
* @param _trustedForwarder The address of the forwarder
* @return A boolean indicating if the forwarder was added
*/
function addTrustedForwarder(address _trustedForwarder) external virtual returns (bool);
/**
* @notice Removes a trusted forwarder
* @param _trustedForwarder The address of the forwarder
* @return A boolean indicating if the forwarder was removed
*/
function removeTrustedForwarder(address _trustedForwarder) external virtual returns (bool);
/*///////////////////////////////////////////////////////////////
INTERNAL FUNCTIONS
///////////////////////////////////////////////////////////////*/
/**
* @notice Override for `msg.sender`. Defaults to the original `msg.sender` whenever
* a call is not performed by the trusted forwarder or the calldata length is less than
* 20 bytes (an address length).
* @return The call sender
*/
function _ERC2771MsgSender() internal view returns (address) {
return ERC2771Context._msgSender();
}
/**
* @notice Override for `msg.data`. Defaults to the original `msg.data` whenever
* a call is not performed by the trusted forwarder or the calldata length is less than
* 20 bytes (an address length).
* @return The call data
*/
function _ERC2771MsgData() internal view returns (bytes calldata) {
return ERC2771Context._msgData();
}
/**
* @notice ERC-2771 specifies the context as being a single address (20 bytes).
* @return The length of the context suffix
*/
function _ERC2771ContextSuffixLength() internal pure returns (uint256) {
return ERC2771Context._contextSuffixLength();
}
/**
* @notice Internal function to add a trusted forwarder
* @param _trustedForwarder The address of the forwarder
* @return A boolean indicating if the forwarder was added
*/
function _addTrustedForwarder(address _trustedForwarder) internal returns (bool) {
return ERC2771Context._addTrustedForwarder(_trustedForwarder);
}
/**
* @notice Internal function to remove a trusted forwarder
* @param _trustedForwarder The address of the forwarder
* @return A boolean indicating if the forwarder was removed
*/
function _removeTrustedForwarder(address _trustedForwarder) internal returns (bool) {
return ERC2771Context._removeTrustedForwarder(_trustedForwarder);
}
}
"
},
"src/forwarder/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT
// Originally sourced from OpenZeppelin Contracts (last updated v4.9.3) (metatx/ERC2771Context.sol)
pragma solidity ^0.8.21;
import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
impo
Submitted on: 2025-10-21 10:47:59
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