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# -*- coding: utf-8 -*-
"""
oauthlib.parameters
~~~~~~~~~~~~~~~~~~~
This module contains methods related to `section 3.5`_ of the OAuth 1.0a spec.
.. _`section 3.5`: http://tools.ietf.org/html/rfc5849#section-3.5
"""
from urlparse import urlparse, urlunparse, parse_qsl
from utils import filter_params, urlencode
def order_params(target):
"""Decorator which reorders params contents to start with oauth_* params
Assumes the decorated method takes a params dict or list of tuples as its
first argument.
"""
def wrapper(params, *args, **kwargs):
params = order_oauth_parameters(params)
return target(params, *args, **kwargs)
wrapper.__doc__ = target.__doc__
return wrapper
def order_oauth_parameters(params):
"""Order a parameters dict or list of tuples with OAuth ones first
Per `section 3.5`_ of the spec.
.. _`section 3.5`: http://tools.ietf.org/html/rfc5849#section-3.5
"""
# Convert dictionaries to list of tuples
if isinstance(params, dict):
params = params.items()
ordered = []
for k, v in params:
if k.startswith("oauth_"):
ordered.insert(0, (k, v))
else:
ordered.append((k, v))
return ordered
@filter_params
def prepare_authorization_header(params, realm=None):
"""Prepare the Authorization header.
Per `section 3.5.1`_ of the spec.
.. _`section 3.5.1`: http://tools.ietf.org/html/rfc5849#section-3.5.1
"""
# TODO: Realm should always be the first parameter, right?
# Doesn't seem to be specified.
if realm:
params.insert(0, ("realm", realm))
# Only oauth_ and realm parameters should remain by this point.
return 'OAuth ' + ','.join(['='.join([k, v]) for k, v in params])
@order_params
def prepare_form_encoded_body(params):
"""Prepare the Form-Encoded Body.
Per `section 3.5.2`_ of the spec.
params: OAuth parameters and data (i.e. POST data).
.. _`section 3.5.2`: http://tools.ietf.org/html/rfc5849#section-3.5.2
"""
return urlencode(params)
@order_params
def prepare_request_uri_query(params, url):
"""Prepare the Request URI Query.
Per `section 3.5.3`_ of the spec.
params: OAuth parameters and data (i.e. POST data).
url: The request url. Query components will be removed.
.. _`section 3.5.3`: http://tools.ietf.org/html/rfc5849#section-3.5.3
"""
# convert dict to list of tuples
if isinstance(params, dict):
params = params.items()
# append OAuth params to the existing set of query components
sch, net, path, par, query, fra = urlparse(url)
queryparams = parse_qsl(query, True)
queryparams.extend(params)
query = urlencode(params)
return urlunparse((sch, net, path, par, query, fra))
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