util function: current nonce
util function: current timestamp
try to find the consumer for the provided request's consumer key
helper to try to sort out headers for people who aren't running apache
just uppercases the http method
parses the url and rebuilds it to be
Returns the normalized parameters of the request
This will be all (except oauth_signature) parameters, sorted first by key, and if duplicate keys, then by value.
Returns the base string of this request
The base string defined as the method, the url and the parameters (normalized), each urlencoded and the concated with &.
figure out the signature with some defaults
try to find the token for the provided request's token key