Self Permit
Functionality to call permit on any EIP-2612-compliant token for use in the route
Developer note: These functions are expected to be embedded in multicalls to allow EOAs to approve a contract and call a function that requires an approval in a single transaction.
Inherits: ISelfPermit
function selfPermit(address token, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public payableSelector: 0xf3995c67
Permits this contract to spend a given token from `msg.sender`
Developer note: The `owner` is always msg.sender and the `spender` is always address(this).
| Name | Type | Description |
|---|---|---|
| token | address | The address of the token spent |
| value | uint256 | The amount that can be spent of token |
| deadline | uint256 | A timestamp, the current blocktime must be less than or equal to this timestamp |
| v | uint8 | Must produce valid secp256k1 signature from the holder along with r and s |
| r | bytes32 | Must produce valid secp256k1 signature from the holder along with v and s |
| s | bytes32 | Must produce valid secp256k1 signature from the holder along with r and v |
function selfPermitIfNecessary(address token, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external payableSelector: 0xc2e3140a
Permits this contract to spend a given token from `msg.sender`
Developer note: The `owner` is always msg.sender and the `spender` is always address(this). Can be used instead of #selfPermit to prevent calls from failing due to a frontrun of a call to #selfPermit
| Name | Type | Description |
|---|---|---|
| token | address | The address of the token spent |
| value | uint256 | The amount that can be spent of token |
| deadline | uint256 | A timestamp, the current blocktime must be less than or equal to this timestamp |
| v | uint8 | Must produce valid secp256k1 signature from the holder along with r and s |
| r | bytes32 | Must produce valid secp256k1 signature from the holder along with v and s |
| s | bytes32 | Must produce valid secp256k1 signature from the holder along with r and v |
function selfPermitAllowed(address token, uint256 nonce, uint256 expiry, uint8 v, bytes32 r, bytes32 s) public payableSelector: 0x4659a494
Permits this contract to spend the sender's tokens for permit signatures that have the `allowed` parameter
Developer note: The `owner` is always msg.sender and the `spender` is always address(this)
| Name | Type | Description |
|---|---|---|
| token | address | The address of the token spent |
| nonce | uint256 | The current nonce of the owner |
| expiry | uint256 | The timestamp at which the permit is no longer valid |
| v | uint8 | Must produce valid secp256k1 signature from the holder along with r and s |
| r | bytes32 | Must produce valid secp256k1 signature from the holder along with v and s |
| s | bytes32 | Must produce valid secp256k1 signature from the holder along with r and v |
function selfPermitAllowedIfNecessary(address token, uint256 nonce, uint256 expiry, uint8 v, bytes32 r, bytes32 s) external payableSelector: 0xa4a78f0c
Permits this contract to spend the sender's tokens for permit signatures that have the `allowed` parameter
Developer note: The `owner` is always msg.sender and the `spender` is always address(this) Can be used instead of #selfPermitAllowed to prevent calls from failing due to a frontrun of a call to #selfPermitAllowed.
| Name | Type | Description |
|---|---|---|
| token | address | The address of the token spent |
| nonce | uint256 | The current nonce of the owner |
| expiry | uint256 | The timestamp at which the permit is no longer valid |
| v | uint8 | Must produce valid secp256k1 signature from the holder along with r and s |
| r | bytes32 | Must produce valid secp256k1 signature from the holder along with v and s |
| s | bytes32 | Must produce valid secp256k1 signature from the holder along with r and v |