authomatic: fixed oauth data types

rhodecode/lib/_vendor/authomatic/adapters.py

@@ -1,281 +1,280 b''
 
 """
 Adapters
 --------
 
 .. contents::
    :backlinks: none
 
 The :func:`authomatic.login` function needs access to functionality like
 getting the **URL** of the handler where it is being called, getting the
 **request params** and **cookies** and **writing the body**, **headers**
 and **status** to the response.
 
 Since implementation of these features varies across Python web frameworks,
 the Authomatic library uses **adapters** to unify these differences into a
 single interface.
 
 Available Adapters
 ^^^^^^^^^^^^^^^^^^
 
 If you are missing an adapter for the framework of your choice, please
 open an `enhancement issue <https://github.com/authomatic/authomatic/issues>`_
 or consider a contribution to this module by
 :ref:`implementing <implement_adapters>` one by yourself.
 Its very easy and shouldn't take you more than a few minutes.
 
 .. autoclass:: DjangoAdapter
     :members:
 
 .. autoclass:: Webapp2Adapter
     :members:
 
 .. autoclass:: WebObAdapter
     :members:
 
 .. autoclass:: WerkzeugAdapter
     :members:
 
 .. _implement_adapters:
 
 Implementing an Adapter
 ^^^^^^^^^^^^^^^^^^^^^^^
 
 Implementing an adapter for a Python web framework is pretty easy.
 
 Do it by subclassing the :class:`.BaseAdapter` abstract class.
 There are only **six** members that you need to implement.
 
 Moreover if your framework is based on the |webob|_ or |werkzeug|_ package
 you can subclass the :class:`.WebObAdapter` or :class:`.WerkzeugAdapter`
 respectively.
 
 .. autoclass:: BaseAdapter
     :members:
 
 """
 
 import abc
 from authomatic.core import Response
 
 
 class BaseAdapter(object, metaclass=abc.ABCMeta):
     """
     Base class for platform adapters.
 
     Defines common interface for WSGI framework specific functionality.
 
     """
 
     @abc.abstractproperty
     def params(self):
         """
         Must return a :class:`dict` of all request parameters of any HTTP
         method.
 
         :returns:
             :class:`dict`
 
         """
 
     @abc.abstractproperty
     def url(self):
         """
         Must return the url of the actual request including path but without
         query and fragment.
 
         :returns:
             :class:`str`
 
         """
 
     @abc.abstractproperty
     def cookies(self):
         """
         Must return cookies as a :class:`dict`.
 
         :returns:
             :class:`dict`
 
         """
 
     @abc.abstractmethod
     def write(self, value):
         """
         Must write specified value to response.
 
         :param str value:
             String to be written to response.
 
         """
 
     @abc.abstractmethod
     def set_header(self, key, value):
         """
         Must set response headers to ``Key: value``.
 
         :param str key:
             Header name.
 
         :param str value:
             Header value.
 
         """
 
     @abc.abstractmethod
     def set_status(self, status):
         """
         Must set the response status e.g. ``'302 Found'``.
 
         :param str status:
             The HTTP response status.
 
         """
 
 
 class DjangoAdapter(BaseAdapter):
     """
     Adapter for the |django|_ framework.
     """
 
     def __init__(self, request, response):
         """
         :param request:
             An instance of the :class:`django.http.HttpRequest` class.
 
         :param response:
             An instance of the :class:`django.http.HttpResponse` class.
         """
         self.request = request
         self.response = response
 
     @property
     def params(self):
         params = {}
         params.update(self.request.GET.dict())
         params.update(self.request.POST.dict())
         return params
 
     @property
     def url(self):
         return self.request.build_absolute_uri(self.request.path)
 
     @property
     def cookies(self):
         return dict(self.request.COOKIES)
 
     def write(self, value):
         self.response.write(value)
 
     def set_header(self, key, value):
         self.response[key] = value
 
     def set_status(self, status):
         status_code, reason = status.split(' ', 1)
         self.response.status_code = int(status_code)
 
 
 class WebObAdapter(BaseAdapter):
     """
     Adapter for the |webob|_ package.
     """
 
     def __init__(self, request, response):
         """
         :param request:
             A |webob|_ :class:`Request` instance.
 
         :param response:
             A |webob|_ :class:`Response` instance.
         """
         self.request = request
         self.response = response
 
     # =========================================================================
     # Request
     # =========================================================================
 
     @property
     def url(self):
         return self.request.path_url
 
     @property
     def params(self):
         return dict(self.request.params)
 
     @property
     def cookies(self):
         return dict(self.request.cookies)
 
     # =========================================================================
     # Response
     # =========================================================================
 
     def write(self, value):
         self.response.write(value)
 
     def set_header(self, key, value):
         self.response.headers[key] = str(value)
 
     def set_status(self, status):
         self.response.status = status
 
 
 class Webapp2Adapter(WebObAdapter):
     """
     Adapter for the |webapp2|_ framework.
 
     Inherits from the :class:`.WebObAdapter`.
 
     """
 
     def __init__(self, handler):
         """
         :param handler:
             A :class:`webapp2.RequestHandler` instance.
         """
         self.request = handler.request
         self.response = handler.response
 
 
 class WerkzeugAdapter(BaseAdapter):
     """
     Adapter for |flask|_ and other |werkzeug|_ based frameworks.
 
     Thanks to `Mark Steve Samson <http://marksteve.com>`_.
 
     """
 
     @property
     def params(self):
         return self.request.args
 
     @property
     def url(self):
         return self.request.base_url
 
     @property
     def cookies(self):
         return self.request.cookies
 
     def __init__(self, request, response):
         """
         :param request:
             Instance of the :class:`werkzeug.wrappers.Request` class.
 
         :param response:
             Instance of the :class:`werkzeug.wrappers.Response` class.
         """
 
         self.request = request
         self.response = response
 
     def write(self, value):
-        #self.response.data = self.response.data.decode('utf-8') + value
-        self.response.data = self.response.data + value
+        self.response.data = self.response.data.decode('utf-8') + value
 
     def set_header(self, key, value):
         self.response.headers[key] = value
 
     def set_status(self, status):
         self.response.status = status

rhodecode/lib/_vendor/authomatic/core.py

@@ -1,1765 +1,1764 b''
 
 
 import collections
 import copy
 import datetime
 import hashlib
 import hmac
 import json
 import logging
 try:
     import cPickle as pickle
 except ImportError:
     import pickle
 import sys
 import threading
 import time
 from xml.etree import ElementTree
 
 from authomatic.exceptions import (
     ConfigError,
     CredentialsError,
     ImportStringError,
     RequestElementsError,
     SessionError,
 )
 from authomatic import six
 from authomatic.six.moves import urllib_parse as parse
 
 
 # =========================================================================
 # Global variables !!!
 # =========================================================================
 
 _logger = logging.getLogger(__name__)
 _logger.addHandler(logging.StreamHandler(sys.stdout))
 
 _counter = None
 
 
 def normalize_dict(dict_):
     """
     Replaces all values that are single-item iterables with the value of its
     index 0.
 
     :param dict dict_:
         Dictionary to normalize.
 
     :returns:
         Normalized dictionary.
 
     """
 
     return dict([(k, v[0] if not isinstance(v, str) and len(v) == 1 else v)
                  for k, v in list(dict_.items())])
 
 
 def items_to_dict(items):
     """
     Converts list of tuples to dictionary with duplicate keys converted to
     lists.
 
     :param list items:
         List of tuples.
 
     :returns:
         :class:`dict`
 
     """
 
     res = collections.defaultdict(list)
 
     for k, v in items:
         res[k].append(v)
 
     return normalize_dict(dict(res))
 
 
 class Counter(object):
     """
     A simple counter to be used in the config to generate unique `id` values.
     """
 
     def __init__(self, start=0):
         self._count = start
 
     def count(self):
         self._count += 1
         return self._count
 
 
 _counter = Counter()
 
 
 def provider_id():
     """
     A simple counter to be used in the config to generate unique `IDs`.
 
     :returns:
         :class:`int`.
 
     Use it in the :doc:`config` like this:
     ::
 
         import authomatic
 
         CONFIG = {
             'facebook': {
                  'class_': authomatic.providers.oauth2.Facebook,
                  'id': authomatic.provider_id(), # returns 1
                  'consumer_key': '##########',
                  'consumer_secret': '##########',
                  'scope': ['user_about_me', 'email']
             },
             'google': {
                  'class_': 'authomatic.providers.oauth2.Google',
                  'id': authomatic.provider_id(), # returns 2
                  'consumer_key': '##########',
                  'consumer_secret': '##########',
                  'scope': ['https://www.googleapis.com/auth/userinfo.profile',
                            'https://www.googleapis.com/auth/userinfo.email']
             },
             'windows_live': {
                  'class_': 'oauth2.WindowsLive',
                  'id': authomatic.provider_id(), # returns 3
                  'consumer_key': '##########',
                  'consumer_secret': '##########',
                  'scope': ['wl.basic', 'wl.emails', 'wl.photos']
             },
         }
 
     """
 
     return _counter.count()
 
 
 def escape(s):
     """
     Escape a URL including any /.
     """
     return parse.quote(s.encode('utf-8'), safe='~')
 
 
 def json_qs_parser(body):
     """
     Parses response body from JSON, XML or query string.
 
     :param body:
         string
 
     :returns:
         :class:`dict`, :class:`list` if input is JSON or query string,
         :class:`xml.etree.ElementTree.Element` if XML.
 
     """
     try:
         # Try JSON first.
         return json.loads(body)
     except (OverflowError, TypeError, ValueError):
         pass
 
     try:
         # Then XML.
         return ElementTree.fromstring(body)
     except (ElementTree.ParseError, TypeError, ValueError):
         pass
 
     # Finally query string.
     return dict(parse.parse_qsl(body))
 
 
 def import_string(import_name, silent=False):
     """
     Imports an object by string in dotted notation.
 
     taken `from webapp2.import_string() <http://webapp-
     improved.appspot.com/api/webapp2.html#webapp2.import_string>`_
 
     """
 
     try:
         if '.' in import_name:
             module, obj = import_name.rsplit('.', 1)
             return getattr(__import__(module, None, None, [obj]), obj)
         else:
             return __import__(import_name)
     except (ImportError, AttributeError) as e:
         if not silent:
             raise ImportStringError('Import from string failed for path {0}'
                                     .format(import_name), str(e))
 
 
 def resolve_provider_class(class_):
     """
     Returns a provider class.
 
     :param class_name: :class:`string` or
     :class:`authomatic.providers.BaseProvider` subclass.
 
     """
 
     if isinstance(class_, str):
         # prepare path for authomatic.providers package
         path = '.'.join([__package__, 'providers', class_])
 
         # try to import class by string from providers module or by fully
         # qualified path
         return import_string(class_, True) or import_string(path)
     else:
         return class_
 
 
 def id_to_name(config, short_name):
     """
     Returns the provider :doc:`config` key based on it's ``id`` value.
 
     :param dict config:
         :doc:`config`.
     :param id:
         Value of the id parameter in the :ref:`config` to search for.
 
     """
 
     for k, v in list(config.items()):
         if v.get('id') == short_name:
             return k
 
     raise Exception(
         'No provider with id={0} found in the config!'.format(short_name))
 
 
 class ReprMixin(object):
     """
     Provides __repr__() method with output *ClassName(arg1=value, arg2=value)*.
 
     Ignored are attributes
 
     * which values are considered false.
     * with leading underscore.
     * listed in _repr_ignore.
 
     Values of attributes listed in _repr_sensitive will be replaced by *###*.
     Values which repr() string is longer than _repr_length_limit will be
     represented as *ClassName(...)*
 
     """
 
     #: Iterable of attributes to be ignored.
     _repr_ignore = []
     #: Iterable of attributes which value should not be visible.
     _repr_sensitive = []
     #: `int` Values longer than this will be truncated to *ClassName(...)*.
     _repr_length_limit = 20
 
     def __repr__(self):
 
         # get class name
         name = self.__class__.__name__
 
         # construct keyword arguments
         args = []
 
         for k, v in list(self.__dict__.items()):
 
             # ignore attributes with leading underscores and those listed in
             # _repr_ignore
             if v and not k.startswith('_') and k not in self._repr_ignore:
 
                 # replace sensitive values
                 if k in self._repr_sensitive:
                     v = '###'
 
                 # if repr is too long
                 if len(repr(v)) > self._repr_length_limit:
                     # Truncate to ClassName(...)
                     v = '{0}(...)'.format(v.__class__.__name__)
                 else:
                     v = repr(v)
 
                 args.append('{0}={1}'.format(k, v))
 
         return '{0}({1})'.format(name, ', '.join(args))
 
 
 class Future(threading.Thread):
     """
     Represents an activity run in a separate thread. Subclasses the standard
     library :class:`threading.Thread` and adds :attr:`.get_result` method.
 
     .. warning::
 
         |async|
 
     """
 
     def __init__(self, func, *args, **kwargs):
         """
         :param callable func:
             The function to be run in separate thread.
 
         Calls :data:`func` in separate thread and returns immediately.
         Accepts arbitrary positional and keyword arguments which will be
         passed to :data:`func`.
         """
 
         super(Future, self).__init__()
         self._func = func
         self._args = args
         self._kwargs = kwargs
         self._result = None
 
         self.start()
 
     def run(self):
         self._result = self._func(*self._args, **self._kwargs)
 
     def get_result(self, timeout=None):
         """
         Waits for the wrapped :data:`func` to finish and returns its result.
 
         .. note::
 
             This will block the **calling thread** until the :data:`func`
             returns.
 
         :param timeout:
             :class:`float` or ``None`` A timeout for the :data:`func` to
             return in seconds.
 
         :returns:
             The result of the wrapped :data:`func`.
 
         """
 
         self.join(timeout)
         return self._result
 
 
 class Session(object):
     """
     A dictionary-like secure cookie session implementation.
     """
 
     def __init__(self, adapter, secret, name='authomatic', max_age=600,
                  secure=False):
         """
         :param str secret:
             Session secret used to sign the session cookie.
         :param str name:
             Session cookie name.
         :param int max_age:
             Maximum allowed age of session cookie nonce in seconds.
         :param bool secure:
             If ``True`` the session cookie will be saved with ``Secure``
             attribute.
         """
 
         self.adapter = adapter
         self.name = name
         self.secret = secret
         self.max_age = max_age
         self.secure = secure
         self._data = {}
 
     def create_cookie(self, delete=None):
         """
         Creates the value for ``Set-Cookie`` HTTP header.
 
         :param bool delete:
             If ``True`` the cookie value will be ``deleted`` and the
             Expires value will be ``Thu, 01-Jan-1970 00:00:01 GMT``.
 
         """
         value = 'deleted' if delete else self._serialize(self.data)
         split_url = parse.urlsplit(self.adapter.url)
         domain = split_url.netloc.split(':')[0]
 
         # Work-around for issue #11, failure of WebKit-based browsers to accept
         # cookies set as part of a redirect response in some circumstances.
         if '.' not in domain:
             template = '{name}={value}; Path={path}; HttpOnly{secure}{expires}'
         else:
             template = ('{name}={value}; Domain={domain}; Path={path}; '
                         'HttpOnly{secure}{expires}')
 
         return template.format(
             name=self.name,
             value=value,
             domain=domain,
             path=split_url.path,
             secure='; Secure' if self.secure else '',
             expires='; Expires=Thu, 01-Jan-1970 00:00:01 GMT' if delete else ''
         )
 
     def save(self):
         """
         Adds the session cookie to headers.
         """
         if self.data:
             cookie = self.create_cookie()
             cookie_len = len(cookie)
 
             if cookie_len > 4093:
                 raise SessionError('Cookie too long! The cookie size {0} '
                                    'is more than 4093 bytes.'
                                    .format(cookie_len))
 
             self.adapter.set_header('Set-Cookie', cookie)
 
             # Reset data
             self._data = {}
 
     def delete(self):
         self.adapter.set_header('Set-Cookie', self.create_cookie(delete=True))
 
     def _get_data(self):
         """
         Extracts the session data from cookie.
         """
         cookie = self.adapter.cookies.get(self.name)
         return self._deserialize(cookie) if cookie else {}
 
     @property
     def data(self):
         """
         Gets session data lazily.
         """
         if not self._data:
             self._data = self._get_data()
         # Always return a dict, even if deserialization returned nothing
         if self._data is None:
             self._data = {}
         return self._data
 
     def _signature(self, *parts):
         """
         Creates signature for the session.
         """
         signature = hmac.new(six.b(self.secret), digestmod=hashlib.sha1)
         signature.update(six.b('|'.join(parts)))
         return signature.hexdigest()
 
     def _serialize(self, value):
         """
         Converts the value to a signed string with timestamp.
 
         :param value:
             Object to be serialized.
 
         :returns:
             Serialized value.
 
         """
 
         # data = copy.deepcopy(value)
         data = value
 
         # 1. Serialize
         serialized = pickle.dumps(data).decode('latin-1')
 
         # 2. Encode
         # Percent encoding produces smaller result then urlsafe base64.
         encoded = parse.quote(serialized, '')
 
         # 3. Concatenate
         timestamp = str(int(time.time()))
         signature = self._signature(self.name, encoded, timestamp)
         concatenated = '|'.join([encoded, timestamp, signature])
 
         return concatenated
 
     def _deserialize(self, value):
         """
         Deserializes and verifies the value created by :meth:`._serialize`.
 
         :param str value:
             The serialized value.
 
         :returns:
             Deserialized object.
 
         """
 
         # 3. Split
         encoded, timestamp, signature = value.split('|')
 
         # Verify signature
         if not signature == self._signature(self.name, encoded, timestamp):
             raise SessionError('Invalid signature "{0}"!'.format(signature))
 
         # Verify timestamp
         if int(timestamp) < int(time.time()) - self.max_age:
             return None
 
         # 2. Decode
         decoded = parse.unquote(encoded)
 
         # 1. Deserialize
         deserialized = pickle.loads(decoded.encode('latin-1'))
 
         return deserialized
 
     def __setitem__(self, key, value):
         self._data[key] = value
 
     def __getitem__(self, key):
         return self.data.__getitem__(key)
 
     def __delitem__(self, key):
         return self._data.__delitem__(key)
 
     def get(self, key, default=None):
         return self.data.get(key, default)
 
 
 class User(ReprMixin):
     """
     Provides unified interface to selected **user** info returned by different
     **providers**.
 
     .. note:: The value format may vary across providers.
 
     """
 
     def __init__(self, provider, **kwargs):
         #: A :doc:`provider <providers>` instance.
         self.provider = provider
 
         #: An :class:`.Credentials` instance.
         self.credentials = kwargs.get('credentials')
 
         #: A :class:`dict` containing all the **user** information returned
         #: by the **provider**.
         #: The structure differs across **providers**.
         self.data = kwargs.get('data')
 
         #: The :attr:`.Response.content` of the request made to update
         #: the user.
         self.content = kwargs.get('content')
 
         #: :class:`str` ID assigned to the **user** by the **provider**.
         self.id = kwargs.get('id')
         #: :class:`str` User name e.g. *andrewpipkin*.
         self.username = kwargs.get('username')
         #: :class:`str` Name e.g. *Andrew Pipkin*.
         self.name = kwargs.get('name')
         #: :class:`str` First name e.g. *Andrew*.
         self.first_name = kwargs.get('first_name')
         #: :class:`str` Last name e.g. *Pipkin*.
         self.last_name = kwargs.get('last_name')
         #: :class:`str` Nickname e.g. *Andy*.
         self.nickname = kwargs.get('nickname')
         #: :class:`str` Link URL.
         self.link = kwargs.get('link')
         #: :class:`str` Gender.
         self.gender = kwargs.get('gender')
         #: :class:`str` Timezone.
         self.timezone = kwargs.get('timezone')
         #: :class:`str` Locale.
         self.locale = kwargs.get('locale')
         #: :class:`str` E-mail.
         self.email = kwargs.get('email')
         #: :class:`str` phone.
         self.phone = kwargs.get('phone')
         #: :class:`str` Picture URL.
         self.picture = kwargs.get('picture')
         #: Birth date as :class:`datetime.datetime()` or :class:`str`
         #  if parsing failed or ``None``.
         self.birth_date = kwargs.get('birth_date')
         #: :class:`str` Country.
         self.country = kwargs.get('country')
         #: :class:`str` City.
         self.city = kwargs.get('city')
         #: :class:`str` Geographical location.
         self.location = kwargs.get('location')
         #: :class:`str` Postal code.
         self.postal_code = kwargs.get('postal_code')
         #: Instance of the Google App Engine Users API
         #: `User <https://developers.google.com/appengine/docs/python/users/userclass>`_ class.
         #: Only present when using the :class:`authomatic.providers.gaeopenid.GAEOpenID` provider.
         self.gae_user = kwargs.get('gae_user')
 
     def update(self):
         """
         Updates the user info by fetching the **provider's** user info URL.
 
         :returns:
             Updated instance of this class.
 
         """
 
         return self.provider.update_user()
 
     def async_update(self):
         """
         Same as :meth:`.update` but runs asynchronously in a separate thread.
 
         .. warning::
 
             |async|
 
         :returns:
             :class:`.Future` instance representing the separate thread.
 
         """
 
         return Future(self.update)
 
     def to_dict(self):
         """
         Converts the :class:`.User` instance to a :class:`dict`.
 
         :returns:
             :class:`dict`
 
         """
 
         # copy the dictionary
         d = copy.copy(self.__dict__)
 
         # Keep only the provider name to avoid circular reference
         d['provider'] = self.provider.name
         d['credentials'] = self.credentials.serialize(
         ) if self.credentials else None
         d['birth_date'] = str(d['birth_date'])
 
         # Remove content
         d.pop('content')
 
         if isinstance(self.data, ElementTree.Element):
             d['data'] = None
 
         return d
 
 
 SupportedUserAttributesNT = collections.namedtuple(
     typename='SupportedUserAttributesNT',
     field_names=['birth_date', 'city', 'country', 'email', 'first_name',
                  'gender', 'id', 'last_name', 'link', 'locale', 'location',
                  'name', 'nickname', 'phone', 'picture', 'postal_code',
                  'timezone', 'username', ]
 )
 
 
 class SupportedUserAttributes(SupportedUserAttributesNT):
     def __new__(cls, **kwargs):
         defaults = dict((i, False) for i in SupportedUserAttributes._fields)  # pylint:disable=no-member
         defaults.update(**kwargs)
         return super(SupportedUserAttributes, cls).__new__(cls, **defaults)
 
 
 class Credentials(ReprMixin):
     """
     Contains all necessary information to fetch **user's protected resources**.
     """
 
     _repr_sensitive = ('token', 'refresh_token', 'token_secret',
                        'consumer_key', 'consumer_secret')
 
     def __init__(self, config, **kwargs):
 
         #: :class:`dict` :doc:`config`.
         self.config = config
 
         #: :class:`str` User **access token**.
         self.token = kwargs.get('token', '')
 
         #: :class:`str` Access token type.
         self.token_type = kwargs.get('token_type', '')
 
         #: :class:`str` Refresh token.
         self.refresh_token = kwargs.get('refresh_token', '')
 
         #: :class:`str` Access token secret.
         self.token_secret = kwargs.get('token_secret', '')
 
         #: :class:`int` Expiration date as UNIX timestamp.
         self.expiration_time = int(kwargs.get('expiration_time', 0))
 
         #: A :doc:`Provider <providers>` instance**.
         provider = kwargs.get('provider')
 
         self.expire_in = int(kwargs.get('expire_in', 0))
 
         if provider:
             #: :class:`str` Provider name specified in the :doc:`config`.
             self.provider_name = provider.name
 
             #: :class:`str` Provider type e.g.
             #  ``"authomatic.providers.oauth2.OAuth2"``.
             self.provider_type = provider.get_type()
 
             #: :class:`str` Provider type e.g.
             #  ``"authomatic.providers.oauth2.OAuth2"``.
             self.provider_type_id = provider.type_id
 
             #: :class:`str` Provider short name specified in the :doc:`config`.
             self.provider_id = int(provider.id) if provider.id else None
 
             #: :class:`class` Provider class.
             self.provider_class = provider.__class__
 
             #: :class:`str` Consumer key specified in the :doc:`config`.
             self.consumer_key = provider.consumer_key
 
             #: :class:`str` Consumer secret specified in the :doc:`config`.
             self.consumer_secret = provider.consumer_secret
 
         else:
             self.provider_name = kwargs.get('provider_name', '')
             self.provider_type = kwargs.get('provider_type', '')
             self.provider_type_id = kwargs.get('provider_type_id')
             self.provider_id = kwargs.get('provider_id')
             self.provider_class = kwargs.get('provider_class')
 
             self.consumer_key = kwargs.get('consumer_key', '')
             self.consumer_secret = kwargs.get('consumer_secret', '')
 
     @property
     def expire_in(self):
         """
 
         """
 
         return self._expire_in
 
     @expire_in.setter
     def expire_in(self, value):
         """
         Computes :attr:`.expiration_time` when the value is set.
         """
 
         # pylint:disable=attribute-defined-outside-init
         if value:
             self._expiration_time = int(time.time()) + int(value)
             self._expire_in = value
 
     @property
     def expiration_time(self):
         return self._expiration_time
 
     @expiration_time.setter
     def expiration_time(self, value):
 
         # pylint:disable=attribute-defined-outside-init
         self._expiration_time = int(value)
         self._expire_in = self._expiration_time - int(time.time())
 
     @property
     def expiration_date(self):
         """
         Expiration date as :class:`datetime.datetime` or ``None`` if
         credentials never expire.
         """
 
         if self.expire_in < 0:
             return None
         else:
             return datetime.datetime.fromtimestamp(self.expiration_time)
 
     @property
     def valid(self):
         """
         ``True`` if credentials are valid, ``False`` if expired.
         """
 
         if self.expiration_time:
             return self.expiration_time > int(time.time())
         else:
             return True
 
     def expire_soon(self, seconds):
         """
         Returns ``True`` if credentials expire sooner than specified.
 
         :param int seconds:
             Number of seconds.
 
         :returns:
             ``True`` if credentials expire sooner than specified,
             else ``False``.
 
         """
 
         if self.expiration_time:
             return self.expiration_time < int(time.time()) + int(seconds)
         else:
             return False
 
     def refresh(self, force=False, soon=86400):
         """
         Refreshes the credentials only if the **provider** supports it and if
         it will expire in less than one day. It does nothing in other cases.
 
         .. note::
 
             The credentials will be refreshed only if it gives sense
             i.e. only |oauth2|_ has the notion of credentials
             *refreshment/extension*.
             And there are also differences across providers e.g. Google
             supports refreshment only if there is a ``refresh_token`` in
             the credentials and that in turn is present only if the
             ``access_type`` parameter was set to ``offline`` in the
             **user authorization request**.
 
         :param bool force:
             If ``True`` the credentials will be refreshed even if they
             won't expire soon.
 
         :param int soon:
             Number of seconds specifying what means *soon*.
 
         """
 
         if hasattr(self.provider_class, 'refresh_credentials'):
             if force or self.expire_soon(soon):
                 logging.info('PROVIDER NAME: {0}'.format(self.provider_name))
                 return self.provider_class(
                     self, None, self.provider_name).refresh_credentials(self)
 
     def async_refresh(self, *args, **kwargs):
         """
         Same as :meth:`.refresh` but runs asynchronously in a separate thread.
 
         .. warning::
 
             |async|
 
         :returns:
             :class:`.Future` instance representing the separate thread.
 
         """
 
         return Future(self.refresh, *args, **kwargs)
 
     def provider_type_class(self):
         """
         Returns the :doc:`provider <providers>` class specified in the
         :doc:`config`.
 
         :returns:
             :class:`authomatic.providers.BaseProvider` subclass.
 
         """
 
         return resolve_provider_class(self.provider_type)
 
     def serialize(self):
         """
         Converts the credentials to a percent encoded string to be stored for
         later use.
 
         :returns:
             :class:`string`
 
         """
 
         if self.provider_id is None:
             raise ConfigError(
                 'To serialize credentials you need to specify a '
                 'unique integer under the "id" key in the config '
                 'for each provider!')
 
         # Get the provider type specific items.
         rest = self.provider_type_class().to_tuple(self)
 
         # Provider ID and provider type ID are always the first two items.
         result = (self.provider_id, self.provider_type_id) + rest
 
         # Make sure that all items are strings.
         stringified = [str(i) for i in result]
 
         # Concatenate by newline.
         concatenated = '\n'.join(stringified)
 
         # Percent encode.
         return parse.quote(concatenated, '')
 
     @classmethod
     def deserialize(cls, config, credentials):
         """
         A *class method* which reconstructs credentials created by
         :meth:`serialize`. You can also pass it a :class:`.Credentials`
         instance.
 
         :param dict config:
             The same :doc:`config` used in the :func:`.login` to get the
             credentials.
         :param str credentials:
             :class:`string` The serialized credentials or
             :class:`.Credentials` instance.
 
         :returns:
             :class:`.Credentials`
 
         """
 
         # Accept both serialized and normal.
         if isinstance(credentials, Credentials):
             return credentials
 
         decoded = parse.unquote(credentials)
 
         split = decoded.split('\n')
 
         # We need the provider ID to move forward.
         if split[0] is None:
             raise CredentialsError(
                 'To deserialize credentials you need to specify a unique '
                 'integer under the "id" key in the config for each provider!')
 
         # Get provider config by short name.
         provider_name = id_to_name(config, int(split[0]))
         cfg = config.get(provider_name)
 
         # Get the provider class.
         ProviderClass = resolve_provider_class(cfg.get('class_'))
 
         deserialized = Credentials(config)
 
         deserialized.provider_id = int(split[0])
         deserialized.provider_type = ProviderClass.get_type()
         deserialized.provider_type_id = split[1]
         deserialized.provider_class = ProviderClass
         deserialized.provider_name = provider_name
         deserialized.provider_class = ProviderClass
 
         # Add provider type specific properties.
         return ProviderClass.reconstruct(split[2:], deserialized, cfg)
 
 
 class LoginResult(ReprMixin):
     """
     Result of the :func:`authomatic.login` function.
     """
 
     def __init__(self, provider):
         #: A :doc:`provider <providers>` instance.
         self.provider = provider
 
         #: An instance of the :exc:`authomatic.exceptions.BaseError` subclass.
         self.error = None
 
     def popup_js(self, callback_name=None, indent=None,
                  custom=None, stay_open=False):
         """
         Returns JavaScript that:
 
         #.  Triggers the ``options.onLoginComplete(result, closer)``
             handler set with the :ref:`authomatic.setup() <js_setup>`
             function of :ref:`javascript.js <js>`.
         #.  Calls the JavasScript callback specified by :data:`callback_name`
             on the opener of the *login handler popup* and passes it the
             *login result* JSON object as first argument and the `closer`
             function which you should call in your callback to close the popup.
 
         :param str callback_name:
             The name of the javascript callback e.g ``foo.bar.loginCallback``
             will result in ``window.opener.foo.bar.loginCallback(result);``
             in the HTML.
 
         :param int indent:
             The number of spaces to indent the JSON result object.
             If ``0`` or negative, only newlines are added.
             If ``None``, no newlines are added.
 
         :param custom:
             Any JSON serializable object that will be passed to the
             ``result.custom`` attribute.
 
         :param str stay_open:
             If ``True``, the popup will stay open.
 
         :returns:
             :class:`str` with JavaScript.
 
         """
 
         custom_callback = """
         try {{ window.opener.{cb}(result, closer); }} catch(e) {{}}
         """.format(cb=callback_name) if callback_name else ''
 
         # TODO: Move the window.close() to the opener
         return """
         (function(){{
 
             closer = function(){{
                 window.close();
             }};
 
             var result = {result};
             result.custom = {custom};
 
             {custom_callback}
 
             try {{
                 window.opener.authomatic.loginComplete(result, closer);
             }} catch(e) {{}}
 
         }})();
 
         """.format(result=self.to_json(indent),
                    custom=json.dumps(custom),
                    custom_callback=custom_callback,
                    stay_open='// ' if stay_open else '')
 
     def popup_html(self, callback_name=None, indent=None,
                    title='Login | {0}', custom=None, stay_open=False):
         """
         Returns a HTML with JavaScript that:
 
         #.  Triggers the ``options.onLoginComplete(result, closer)`` handler
             set with the :ref:`authomatic.setup() <js_setup>` function of
             :ref:`javascript.js <js>`.
         #.  Calls the JavasScript callback specified by :data:`callback_name`
             on the opener of the *login handler popup* and passes it the
             *login result* JSON object as first argument and the `closer`
             function which you should call in your callback to close the popup.
 
         :param str callback_name:
             The name of the javascript callback e.g ``foo.bar.loginCallback``
             will result in ``window.opener.foo.bar.loginCallback(result);``
             in the HTML.
 
         :param int indent:
             The number of spaces to indent the JSON result object.
             If ``0`` or negative, only newlines are added.
             If ``None``, no newlines are added.
 
         :param str title:
             The text of the HTML title. You can use ``{0}`` tag inside,
             which will be replaced by the provider name.
 
         :param custom:
             Any JSON serializable object that will be passed to the
             ``result.custom`` attribute.
 
         :param str stay_open:
             If ``True``, the popup will stay open.
 
         :returns:
             :class:`str` with HTML.
 
         """
 
         return """
         <!DOCTYPE html>
         <html>
             <head><title>{title}</title></head>
             <body>
             <script type="text/javascript">
                 {js}
             </script>
             </body>
         </html>
         """.format(
             title=title.format(self.provider.name if self.provider else ''),
             js=self.popup_js(callback_name, indent, custom, stay_open)
         )
 
     @property
     def user(self):
         """
         A :class:`.User` instance.
         """
 
         return self.provider.user if self.provider else None
 
     def to_dict(self):
         return dict(provider=self.provider, user=self.user, error=self.error)
 
     def to_json(self, indent=4):
         return json.dumps(self, default=lambda obj: obj.to_dict(
         ) if hasattr(obj, 'to_dict') else '', indent=indent)
 
 
 class Response(ReprMixin):
     """
     Wraps :class:`httplib.HTTPResponse` and adds.
 
     :attr:`.content` and :attr:`.data` attributes.
 
     """
 
     def __init__(self, httplib_response, content_parser=None):
         """
         :param httplib_response:
             The wrapped :class:`httplib.HTTPResponse` instance.
 
         :param function content_parser:
             Callable which accepts :attr:`.content` as argument,
             parses it and returns the parsed data as :class:`dict`.
         """
 
         self.httplib_response = httplib_response
         self.content_parser = content_parser or json_qs_parser
         self._data = None
         self._content = None
 
         #: Same as :attr:`httplib.HTTPResponse.msg`.
         self.msg = httplib_response.msg
         #: Same as :attr:`httplib.HTTPResponse.version`.
         self.version = httplib_response.version
         #: Same as :attr:`httplib.HTTPResponse.status`.
         self.status = httplib_response.status
         #: Same as :attr:`httplib.HTTPResponse.reason`.
         self.reason = httplib_response.reason
 
     def read(self, amt=None):
         """
         Same as :meth:`httplib.HTTPResponse.read`.
 
         :param amt:
 
         """
 
         return self.httplib_response.read(amt)
 
     def getheader(self, name, default=None):
         """
         Same as :meth:`httplib.HTTPResponse.getheader`.
 
         :param name:
         :param default:
 
         """
 
         return self.httplib_response.getheader(name, default)
 
     def fileno(self):
         """
         Same as :meth:`httplib.HTTPResponse.fileno`.
         """
         return self.httplib_response.fileno()
 
     def getheaders(self):
         """
         Same as :meth:`httplib.HTTPResponse.getheaders`.
         """
         return self.httplib_response.getheaders()
 
     @staticmethod
     def is_binary_string(content):
         """
         Return true if string is binary data.
         """
 
         textchars = (bytearray([7, 8, 9, 10, 12, 13, 27])
                      + bytearray(range(0x20, 0x100)))
         return bool(content.translate(None, textchars))
 
     @property
     def content(self):
         """
         The whole response content.
         """
 
         if not self._content:
             content = self.httplib_response.read()
             if self.is_binary_string(content):
                 self._content = content
             else:
-                #self._content = content.decode('utf-8')
-                self._content = content
+                self._content = content.decode('utf-8')
         return self._content
 
     @property
     def data(self):
         """
         A :class:`dict` of data parsed from :attr:`.content`.
         """
 
         if not self._data:
             self._data = self.content_parser(self.content)
         return self._data
 
 
 class UserInfoResponse(Response):
     """
     Inherits from :class:`.Response`, adds  :attr:`~UserInfoResponse.user`
     attribute.
     """
 
     def __init__(self, user, *args, **kwargs):
         super(UserInfoResponse, self).__init__(*args, **kwargs)
 
         #: :class:`.User` instance.
         self.user = user
 
 
 class RequestElements(tuple):
     """
     A tuple of ``(url, method, params, headers, body)`` request elements.
 
     With some additional properties.
 
     """
 
     def __new__(cls, url, method, params, headers, body):
         return tuple.__new__(cls, (url, method, params, headers, body))
 
     @property
     def url(self):
         """
         Request URL.
         """
 
         return self[0]
 
     @property
     def method(self):
         """
         HTTP method of the request.
         """
 
         return self[1]
 
     @property
     def params(self):
         """
         Dictionary of request parameters.
         """
 
         return self[2]
 
     @property
     def headers(self):
         """
         Dictionary of request headers.
         """
 
         return self[3]
 
     @property
     def body(self):
         """
         :class:`str` Body of ``POST``, ``PUT`` and ``PATCH`` requests.
         """
 
         return self[4]
 
     @property
     def query_string(self):
         """
         Query string of the request.
         """
 
         return parse.urlencode(self.params)
 
     @property
     def full_url(self):
         """
         URL with query string.
         """
 
         return self.url + '?' + self.query_string
 
     def to_json(self):
         return json.dumps(dict(url=self.url,
                                method=self.method,
                                params=self.params,
                                headers=self.headers,
                                body=self.body))
 
 
 class Authomatic(object):
     def __init__(
             self, config, secret, session_max_age=600, secure_cookie=False,
             session=None, session_save_method=None, report_errors=True,
             debug=False, logging_level=logging.INFO, prefix='authomatic',
             logger=None
     ):
         """
         Encapsulates all the functionality of this package.
 
         :param dict config:
             :doc:`config`
 
         :param str secret:
             A secret string that will be used as the key for signing
             :class:`.Session` cookie and as a salt by *CSRF* token generation.
 
         :param session_max_age:
             Maximum allowed age of :class:`.Session` cookie nonce in seconds.
 
         :param bool secure_cookie:
             If ``True`` the :class:`.Session` cookie will be saved wit
             ``Secure`` attribute.
 
         :param session:
             Custom dictionary-like session implementation.
 
         :param callable session_save_method:
             A method of the supplied session or any mechanism that saves the
             session data and cookie.
 
         :param bool report_errors:
             If ``True`` exceptions encountered during the **login procedure**
             will be caught and reported in the :attr:`.LoginResult.error`
             attribute.
             Default is ``True``.
 
         :param bool debug:
             If ``True`` traceback of exceptions will be written to response.
             Default is ``False``.
 
         :param int logging_level:
             The logging level threshold for the default logger as specified in
             the standard Python
             `logging library <http://docs.python.org/2/library/logging.html>`_.
             This setting is ignored when :data:`logger` is set.
             Default is ``logging.INFO``.
 
         :param str prefix:
             Prefix used as the :class:`.Session` cookie name.
 
         :param logger:
             A :class:`logging.logger` instance.
 
         """
 
         self.config = config
         self.secret = secret
         self.session_max_age = session_max_age
         self.secure_cookie = secure_cookie
         self.session = session
         self.session_save_method = session_save_method
         self.report_errors = report_errors
         self.debug = debug
         self.logging_level = logging_level
         self.prefix = prefix
         self._logger = logger or logging.getLogger(str(id(self)))
 
         # Set logging level.
         if logger is None:
             self._logger.setLevel(logging_level)
 
     def login(self, adapter, provider_name, callback=None,
               session=None, session_saver=None, **kwargs):
         """
         If :data:`provider_name` specified, launches the login procedure for
         corresponding :doc:`provider </reference/providers>` and returns
         :class:`.LoginResult`.
 
         If :data:`provider_name` is empty, acts like
         :meth:`.Authomatic.backend`.
 
         .. warning::
 
             The method redirects the **user** to the **provider** which in
             turn redirects **him/her** back to the *request handler* where
             it has been called.
 
         :param str provider_name:
             Name of the provider as specified in the keys of the :doc:`config`.
 
         :param callable callback:
             If specified the method will call the callback with
             :class:`.LoginResult` passed as argument and will return nothing.
 
         :param bool report_errors:
 
         .. note::
 
             Accepts additional keyword arguments that will be passed to
             :doc:`provider <providers>` constructor.
 
         :returns:
             :class:`.LoginResult`
 
         """
 
         if provider_name:
             # retrieve required settings for current provider and raise
             # exceptions if missing
             provider_settings = self.config.get(provider_name)
             if not provider_settings:
                 raise ConfigError('Provider name "{0}" not specified!'
                                   .format(provider_name))
 
             if not (session is None or session_saver is None):
                 session = session
                 session_saver = session_saver
             else:
                 session = Session(adapter=adapter,
                                   secret=self.secret,
                                   max_age=self.session_max_age,
                                   name=self.prefix,
                                   secure=self.secure_cookie)
 
                 session_saver = session.save
 
             # Resolve provider class.
             class_ = provider_settings.get('class_')
             if not class_:
                 raise ConfigError(
                     'The "class_" key not specified in the config'
                     ' for provider {0}!'.format(provider_name))
             ProviderClass = resolve_provider_class(class_)
 
             # FIXME: Find a nicer solution
             ProviderClass._logger = self._logger
 
             # instantiate provider class
             provider = ProviderClass(self,
                                      adapter=adapter,
                                      provider_name=provider_name,
                                      callback=callback,
                                      session=session,
                                      session_saver=session_saver,
                                      **kwargs)
 
             # return login result
             return provider.login()
 
         else:
             # Act like backend.
             self.backend(adapter)
 
     def credentials(self, credentials):
         """
         Deserializes credentials.
 
         :param credentials:
             Credentials serialized with :meth:`.Credentials.serialize` or
             :class:`.Credentials` instance.
 
         :returns:
             :class:`.Credentials`
 
         """
 
         return Credentials.deserialize(self.config, credentials)
 
     def access(self, credentials, url, params=None, method='GET',
                headers=None, body='', max_redirects=5, content_parser=None):
         """
         Accesses **protected resource** on behalf of the **user**.
 
         :param credentials:
             The **user's** :class:`.Credentials` (serialized or normal).
 
         :param str url:
             The **protected resource** URL.
 
         :param str method:
             HTTP method of the request.
 
         :param dict headers:
             HTTP headers of the request.
 
         :param str body:
             Body of ``POST``, ``PUT`` and ``PATCH`` requests.
 
         :param int max_redirects:
             Maximum number of HTTP redirects to follow.
 
         :param function content_parser:
             A function to be used to parse the :attr:`.Response.data`
             from :attr:`.Response.content`.
 
         :returns:
             :class:`.Response`
 
         """
 
         # Deserialize credentials.
         credentials = Credentials.deserialize(self.config, credentials)
 
         # Resolve provider class.
         ProviderClass = credentials.provider_class
         logging.info('ACCESS HEADERS: {0}'.format(headers))
         # Access resource and return response.
 
         provider = ProviderClass(
             self, adapter=None, provider_name=credentials.provider_name)
         provider.credentials = credentials
 
         return provider.access(url=url,
                                params=params,
                                method=method,
                                headers=headers,
                                body=body,
                                max_redirects=max_redirects,
                                content_parser=content_parser)
 
     def async_access(self, *args, **kwargs):
         """
         Same as :meth:`.Authomatic.access` but runs asynchronously in a
         separate thread.
 
         .. warning::
 
             |async|
 
         :returns:
             :class:`.Future` instance representing the separate thread.
 
         """
 
         return Future(self.access, *args, **kwargs)
 
     def request_elements(
             self, credentials=None, url=None, method='GET', params=None,
             headers=None, body='', json_input=None, return_json=False
     ):
         """
         Creates request elements for accessing **protected resource of a
         user**. Required arguments are :data:`credentials` and :data:`url`. You
         can pass :data:`credentials`, :data:`url`, :data:`method`, and
         :data:`params` as a JSON object.
 
         :param credentials:
             The **user's** credentials (can be serialized).
 
         :param str url:
             The url of the protected resource.
 
         :param str method:
             The HTTP method of the request.
 
         :param dict params:
             Dictionary of request parameters.
 
         :param dict headers:
             Dictionary of request headers.
 
         :param str body:
             Body of ``POST``, ``PUT`` and ``PATCH`` requests.
 
         :param str json_input:
             you can pass :data:`credentials`, :data:`url`, :data:`method`,
             :data:`params` and :data:`headers` in a JSON object.
             Values from arguments will be used for missing properties.
 
             ::
 
                 {
                     "credentials": "###",
                     "url": "https://example.com/api",
                     "method": "POST",
                     "params": {
                         "foo": "bar"
                     },
                     "headers": {
                         "baz": "bing",
                         "Authorization": "Bearer ###"
                     },
                     "body": "Foo bar baz bing."
                 }
 
         :param bool return_json:
             if ``True`` the function returns a json object.
 
             ::
 
                 {
                     "url": "https://example.com/api",
                     "method": "POST",
                     "params": {
                         "access_token": "###",
                         "foo": "bar"
                     },
                     "headers": {
                         "baz": "bing",
                         "Authorization": "Bearer ###"
                     },
                     "body": "Foo bar baz bing."
                 }
 
         :returns:
             :class:`.RequestElements` or JSON string.
 
         """
 
         # Parse values from JSON
         if json_input:
             parsed_input = json.loads(json_input)
 
             credentials = parsed_input.get('credentials', credentials)
             url = parsed_input.get('url', url)
             method = parsed_input.get('method', method)
             params = parsed_input.get('params', params)
             headers = parsed_input.get('headers', headers)
             body = parsed_input.get('body', body)
 
         if not credentials and url:
             raise RequestElementsError(
                 'To create request elements, you must provide credentials '
                 'and URL either as keyword arguments or in the JSON object!')
 
         # Get the provider class
         credentials = Credentials.deserialize(self.config, credentials)
         ProviderClass = credentials.provider_class
 
         # Create request elements
         request_elements = ProviderClass.create_request_elements(
             ProviderClass.PROTECTED_RESOURCE_REQUEST_TYPE,
             credentials=credentials,
             url=url,
             method=method,
             params=params,
             headers=headers,
             body=body)
 
         if return_json:
             return request_elements.to_json()
 
         else:
             return request_elements
 
     def backend(self, adapter):
         """
         Converts a *request handler* to a JSON backend which you can use with
         :ref:`authomatic.js <js>`.
 
         Just call it inside a *request handler* like this:
 
         ::
 
             class JSONHandler(webapp2.RequestHandler):
                 def get(self):
                     authomatic.backend(Webapp2Adapter(self))
 
         :param adapter:
             The only argument is an :doc:`adapter <adapters>`.
 
         The *request handler* will now accept these request parameters:
 
         :param str type:
             Type of the request. Either ``auto``, ``fetch`` or ``elements``.
             Default is ``auto``.
 
         :param str credentials:
             Serialized :class:`.Credentials`.
 
         :param str url:
             URL of the **protected resource** request.
 
         :param str method:
             HTTP method of the **protected resource** request.
 
         :param str body:
             HTTP body of the **protected resource** request.
 
         :param JSON params:
             HTTP params of the **protected resource** request as a JSON object.
 
         :param JSON headers:
             HTTP headers of the **protected resource** request as a
             JSON object.
 
         :param JSON json:
             You can pass all of the aforementioned params except ``type``
             in a JSON object.
 
             .. code-block:: javascript
 
                 {
                     "credentials": "######",
                     "url": "https://example.com",
                     "method": "POST",
                     "params": {"foo": "bar"},
                     "headers": {"baz": "bing"},
                     "body": "the body of the request"
                 }
 
         Depending on the ``type`` param, the handler will either write
         a JSON object with *request elements* to the response,
         and add an ``Authomatic-Response-To: elements`` response header, ...
 
         .. code-block:: javascript
 
             {
                 "url": "https://example.com/api",
                 "method": "POST",
                 "params": {
                     "access_token": "###",
                     "foo": "bar"
                 },
                 "headers": {
                     "baz": "bing",
                     "Authorization": "Bearer ###"
                 }
             }
 
         ... or make a fetch to the **protected resource** and forward
         it's response content, status and headers with an additional
         ``Authomatic-Response-To: fetch`` header to the response.
 
         .. warning::
 
             The backend will not work if you write anything to the
             response in the handler!
 
         """
 
         AUTHOMATIC_HEADER = 'Authomatic-Response-To'
 
         # Collect request params
         request_type = adapter.params.get('type', 'auto')
         json_input = adapter.params.get('json')
         credentials = adapter.params.get('credentials')
         url = adapter.params.get('url')
         method = adapter.params.get('method', 'GET')
         body = adapter.params.get('body', '')
 
         params = adapter.params.get('params')
         params = json.loads(params) if params else {}
 
         headers = adapter.params.get('headers')
         headers = json.loads(headers) if headers else {}
 
         ProviderClass = Credentials.deserialize(
             self.config, credentials).provider_class
 
         if request_type == 'auto':
             # If there is a "callback" param, it's a JSONP request.
             jsonp = params.get('callback')
 
             # JSONP is possible only with GET method.
             if ProviderClass.supports_jsonp and method == 'GET':
                 request_type = 'elements'
             else:
                 # Remove the JSONP callback
                 if jsonp:
                     params.pop('callback')
                 request_type = 'fetch'
 
         if request_type == 'fetch':
             # Access protected resource
             response = self.access(
                 credentials, url, params, method, headers, body)
             result = response.content
 
             # Forward status
             adapter.status = str(response.status) + ' ' + str(response.reason)
 
             # Forward headers
             for k, v in response.getheaders():
                 logging.info('    {0}: {1}'.format(k, v))
                 adapter.set_header(k, v)
 
         elif request_type == 'elements':
             # Create request elements
             if json_input:
                 result = self.request_elements(
                     json_input=json_input, return_json=True)
             else:
                 result = self.request_elements(credentials=credentials,
                                                url=url,
                                                method=method,
                                                params=params,
                                                headers=headers,
                                                body=body,
                                                return_json=True)
 
             adapter.set_header('Content-Type', 'application/json')
         else:
             result = '{"error": "Bad Request!"}'
 
         # Add the authomatic header
         adapter.set_header(AUTHOMATIC_HEADER, request_type)
 
         # Write result to response
         adapter.write(result)