ISelfPermit

Git Source

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

Functions

selfPermit

Permits this contract to spend a given token from msg.sender

The owner is always msg.sender and the spender is always address(this).

function selfPermit(address token, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external payable;

Parameters

NameTypeDescription
tokenaddressThe address of the token spent
valueuint256The amount that can be spent of token
deadlineuint256A timestamp, the current blocktime must be less than or equal to this timestamp
vuint8Must produce valid secp256k1 signature from the holder along with r and s
rbytes32Must produce valid secp256k1 signature from the holder along with v and s
sbytes32Must produce valid secp256k1 signature from the holder along with r and v

selfPermitIfNecessary

Permits this contract to spend a given token from msg.sender

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 selfPermitIfNecessary(
    address token,
    uint256 value,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
)
    external
    payable;

Parameters

NameTypeDescription
tokenaddressThe address of the token spent
valueuint256The amount that can be spent of token
deadlineuint256A timestamp, the current blocktime must be less than or equal to this timestamp
vuint8Must produce valid secp256k1 signature from the holder along with r and s
rbytes32Must produce valid secp256k1 signature from the holder along with v and s
sbytes32Must produce valid secp256k1 signature from the holder along with r and v

selfPermitAllowed

Permits this contract to spend the sender's tokens for permit signatures that have the allowed parameter

The owner is always msg.sender and the spender is always address(this)

function selfPermitAllowed(
    address token,
    uint256 nonce,
    uint256 expiry,
    uint8 v,
    bytes32 r,
    bytes32 s
)
    external
    payable;

Parameters

NameTypeDescription
tokenaddressThe address of the token spent
nonceuint256The current nonce of the owner
expiryuint256The timestamp at which the permit is no longer valid
vuint8Must produce valid secp256k1 signature from the holder along with r and s
rbytes32Must produce valid secp256k1 signature from the holder along with v and s
sbytes32Must produce valid secp256k1 signature from the holder along with r and v

selfPermitAllowedIfNecessary

Permits this contract to spend the sender's tokens for permit signatures that have the allowed parameter

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.

function selfPermitAllowedIfNecessary(
    address token,
    uint256 nonce,
    uint256 expiry,
    uint8 v,
    bytes32 r,
    bytes32 s
)
    external
    payable;

Parameters

NameTypeDescription
tokenaddressThe address of the token spent
nonceuint256The current nonce of the owner
expiryuint256The timestamp at which the permit is no longer valid
vuint8Must produce valid secp256k1 signature from the holder along with r and s
rbytes32Must produce valid secp256k1 signature from the holder along with v and s
sbytes32Must produce valid secp256k1 signature from the holder along with r and v