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# -*- coding: utf-8 -*-
# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import logging
from urllib import urlencode
from werkzeug.exceptions import BadRequest
from mediagoblin.tools.response import render_to_response, redirect
from mediagoblin.decorators import require_active_login
from mediagoblin.messages import add_message, SUCCESS
from mediagoblin.tools.translate import pass_to_ugettext as _
from mediagoblin.plugins.oauth.models import OAuthCode, OAuthClient, \
OAuthUserClient, OAuthRefreshToken
from mediagoblin.plugins.oauth.forms import ClientRegistrationForm, \
AuthorizationForm
from mediagoblin.plugins.oauth.tools import require_client_auth, \
create_token
from mediagoblin.plugins.api.tools import json_response
_log = logging.getLogger(__name__)
@require_active_login
def register_client(request):
'''
Register an OAuth client
'''
form = ClientRegistrationForm(request.form)
if request.method == 'POST' and form.validate():
client = OAuthClient()
client.name = unicode(form.name.data)
client.description = unicode(form.description.data)
client.type = unicode(form.type.data)
client.owner_id = request.user.id
client.redirect_uri = unicode(form.redirect_uri.data)
client.save()
add_message(request, SUCCESS, _('The client {0} has been registered!')\
.format(
client.name))
return redirect(request, 'mediagoblin.plugins.oauth.list_clients')
return render_to_response(
request,
'oauth/client/register.html',
{'form': form})
@require_active_login
def list_clients(request):
clients = request.db.OAuthClient.query.filter(
OAuthClient.owner_id == request.user.id).all()
return render_to_response(request, 'oauth/client/list.html',
{'clients': clients})
@require_active_login
def list_connections(request):
connections = OAuthUserClient.query.filter(
OAuthUserClient.user == request.user).all()
return render_to_response(request, 'oauth/client/connections.html',
{'connections': connections})
@require_active_login
def authorize_client(request):
form = AuthorizationForm(request.form)
client = OAuthClient.query.filter(OAuthClient.id ==
form.client_id.data).first()
if not client:
_log.error('No such client id as received from client authorization \
form.')
raise BadRequest()
if form.validate():
relation = OAuthUserClient()
relation.user_id = request.user.id
relation.client_id = form.client_id.data
if form.allow.data:
relation.state = u'approved'
elif form.deny.data:
relation.state = u'rejected'
else:
raise BadRequest()
relation.save()
return redirect(request, location=form.next.data)
return render_to_response(
request,
'oauth/authorize.html',
{'form': form,
'client': client})
@require_client_auth
@require_active_login
def authorize(request, client):
# TODO: Get rid of the JSON responses in this view, it's called by the
# user-agent, not the client.
user_client_relation = OAuthUserClient.query.filter(
(OAuthUserClient.user == request.user)
& (OAuthUserClient.client == client))
if user_client_relation.filter(OAuthUserClient.state ==
u'approved').count():
redirect_uri = None
if client.type == u'public':
if not client.redirect_uri:
return json_response({
'status': 400,
'errors':
[u'Public clients should have a redirect_uri pre-set.']},
_disable_cors=True)
redirect_uri = client.redirect_uri
if client.type == u'confidential':
redirect_uri = request.GET.get('redirect_uri', client.redirect_uri)
if not redirect_uri:
return json_response({
'status': 400,
'errors': [u'No redirect_uri supplied!']},
_disable_cors=True)
code = OAuthCode()
code.user = request.user
code.client = client
code.save()
redirect_uri = ''.join([
redirect_uri,
'?',
urlencode({'code': code.code})])
_log.debug('Redirecting to {0}'.format(redirect_uri))
return redirect(request, location=redirect_uri)
else:
# Show prompt to allow client to access data
# - on accept: send the user agent back to the redirect_uri with the
# code parameter
# - on deny: send the user agent back to the redirect uri with error
# information
form = AuthorizationForm(request.form)
form.client_id.data = client.id
form.next.data = request.url
return render_to_response(
request,
'oauth/authorize.html',
{'form': form,
'client': client})
def access_token(request):
'''
Access token endpoint provides access tokens to any clients that have the
right grants/credentials
'''
client = None
user = None
if request.GET.get('code'):
# Validate the code arg, then get the client object from the db.
code = OAuthCode.query.filter(OAuthCode.code ==
request.GET.get('code')).first()
if not code:
return json_response({
'error': 'invalid_request',
'error_description':
'Invalid code.'})
client = code.client
user = code.user
elif request.args.get('refresh_token'):
# Validate a refresh token, then get the client object from the db.
refresh_token = OAuthRefreshToken.query.filter(
OAuthRefreshToken.token ==
request.args.get('refresh_token')).first()
if not refresh_token:
return json_response({
'error': 'invalid_request',
'error_description':
'Invalid refresh token.'})
client = refresh_token.client
user = refresh_token.user
if client:
client_identifier = request.GET.get('client_id')
if not client_identifier:
return json_response({
'error': 'invalid_request',
'error_description':
'Missing client_id in request.'})
if not client_identifier == client.identifier:
return json_response({
'error': 'invalid_client',
'error_description':
'Mismatching client credentials.'})
if client.type == u'confidential':
client_secret = request.GET.get('client_secret')
if not client_secret:
return json_response({
'error': 'invalid_request',
'error_description':
'Missing client_secret in request.'})
if not client_secret == client.secret:
return json_response({
'error': 'invalid_client',
'error_description':
'Mismatching client credentials.'})
access_token_data = create_token(client, user)
return json_response(access_token_data, _disable_cors=True)
return json_response({
'error': 'invalid_request',
'error_description':
'Missing `code` or `refresh_token` parameter in request.'})
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