Metatx
Smart contract metatx utilities and implementations
Outdated Version
Core
Utils
import "@openzeppelin/contracts/metatx/ERC2771Context.sol";Context variant with ERC2771 support.
The usage of delegatecall in this contract is dangerous and may result in context corruption.
Any forwarded request to this contract triggering a delegatecall to itself will result in an invalid ERC2771Context._msgSender
recovery.
Functions
constructor(address trustedForwarder)
internal
#isTrustedForwarder(address forwarder) → bool
public
#_msgSender() → address
internal
#_msgData() → bytes
internal
#_contextSuffixLength() → uint256
internal
#ERC-2771 specifies the context as being a single address (20 bytes).
import "@openzeppelin/contracts/metatx/MinimalForwarder.sol";Simple minimal forwarder to be used together with an ERC2771 compatible contract. See ERC2771Context.
MinimalForwarder is mainly meant for testing, as it is missing features to be a good production-ready forwarder. This contract does not intend to have all the properties that are needed for a sound forwarding system. A fully functioning forwarding system with good properties requires more complexity. We suggest you look at other projects such as the GSN which do have the goal of building a system like that.
Functions
constructor()
public
#getNonce(address from) → uint256
public
#verify(struct MinimalForwarder.ForwardRequest req, bytes signature) → bool
public
#execute(struct MinimalForwarder.ForwardRequest req, bytes signature) → bool, bytes
public
#