ISelfPermit

Self Permit

Functionality to call permit on any EIP-2612-compliant token for use in the route

Functions

selfPermit

function selfPermit(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).

NameTypeDescription

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`

selfPermitIfNecessary

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

NameTypeDescription

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`

selfPermitAllowed

function selfPermitAllowed(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)

NameTypeDescription

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The timestamp at which the permit is no longer valid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`

selfPermitAllowedIfNecessary

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.

NameTypeDescription

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`