TransactionForwarder_v1

Git Source

Inherits: ITransactionForwarder_v1, ERC2771ForwarderUpgradeable, ContextUpgradeable

Author: Inverter Network

This contract enables users to interact with smart contracts indirectly through a trusted forwarder. It supports meta transactions, allowing transactions to be sent by one party but signed and paid for by another. It also handles batch transactions (multi-call), facilitating complex, multi-step interactions within a single transaction.

Integrates {ERC2771ForwarderUpgradeable} and {ContextUpgradeable} to manage and relay meta transactions. It handles nonce management, signature verification, and ensures only trusted calls are forwarded.

State Variables

__gap

Storage gap for future upgrades.

uint[50] private __gap;

Functions

constructor

constructor();

init

function init() external initializer;

createDigest

Creates a digest for the given ForwardRequestData.

The signature field of the given ForwardRequestData can be empty.

function createDigest(ForwardRequestData memory req)
    external
    view
    returns (bytes32 digest);

Parameters

Name	Type	Description
req	ForwardRequestData	The ForwardRequest you want to get the digest from.

Returns

Name	Type	Description
digest	bytes32	The digest needed to create a signature for the request.

executeMulticall

Enables the execution of multiple calls in a single transaction.

function executeMulticall(SingleCall[] calldata calls)
    external
    returns (Result[] memory results);

Parameters

Name	Type	Description
calls	SingleCall[]	Array of call structs that should be executed in the multicall.

Returns

Name	Type	Description
results	Result[]	returnData The return data of the calls that were executed.

_getStructHash

Returns the digest for the given ForwardRequestData.

function _getStructHash(
    ERC2771ForwarderUpgradeable.ForwardRequestData memory req
) internal view returns (bytes32);

Parameters

Name	Type	Description
req	ERC2771ForwarderUpgradeable.ForwardRequestData	The ForwardRequest you want to get the digest from.

Returns

Name	Type	Description
<none>	bytes32	digest The digest needed to create a signature for the request.

__isTrustedByTarget

function __isTrustedByTarget(address target) private view returns (bool);