Network.OpenID.Utils

General Helpers

readMaybe :: Read a => String -> Maybe a

Read, maybe.

breaks :: (a -> Bool) -> [a] -> [[a]]

Break up a string by a predicate.

split :: (a -> Bool) -> [a] -> ([a], [a])

Spit a list into a pair, removing the element that caused the predicate to succeed.

roll :: [Word8] -> Integer

Build an Integer out of a big-endian list of bytes.

unroll :: Integer -> [Word8]

Turn an Integer into a big-endian list of bytes

btwoc :: [Word8] -> [Word8]

Pad out a list of bytes to represent a positive, big-endian list of bytes.

OpenID Defaults

defaultModulus :: Integer

Default modulus for Diffie-Hellman key exchange.

openidNS :: String

The OpenID-2.0 namespace.

MonadLib helpers

readM :: (ExceptionM m e, Read a) => e -> String -> m a

Read inside of an Exception monad

lookupParam :: ExceptionM m Error => String -> Params -> m String

Lookup parameters inside an exception handling monad

readParam :: (Read a, ExceptionM m Error) => String -> Params -> m a

Read a field

withResponse :: ExceptionM m Error => Either ConnError (Response String) -> (Response String -> m a) -> m a

Make an HTTP request, and run a function with a successful response