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.
function selfPermit(address token, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public payable payable public
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 |
|---|---|---|
function selfPermitIfNecessary(address token, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external payable payable external
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
function selfPermitAllowed(address token, uint256 nonce, uint256 expiry, uint8 v, bytes32 r, bytes32 s) public payable payable public
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)
function selfPermitAllowedIfNecessary(address token, uint256 nonce, uint256 expiry, uint8 v, bytes32 r, bytes32 s) external payable payable external
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 |
|---|---|---|
| Name | Type | Description |
|---|---|---|
| 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`
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`
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`
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`
