root / snf-common / synnefo / lib / astakos.py @ c11dc0ce
History | View | Annotate | Download (6.1 kB)
1 | 8acb1f97 | Kostas Papadimitriou | # Copyright 2011-2012 GRNET S.A. All rights reserved.
|
---|---|---|---|
2 | d65af928 | Kostas Papadimitriou | #
|
3 | 8acb1f97 | Kostas Papadimitriou | # Redistribution and use in source and binary forms, with or
|
4 | 8acb1f97 | Kostas Papadimitriou | # without modification, are permitted provided that the following
|
5 | 8acb1f97 | Kostas Papadimitriou | # conditions are met:
|
6 | d65af928 | Kostas Papadimitriou | #
|
7 | 8acb1f97 | Kostas Papadimitriou | # 1. Redistributions of source code must retain the above
|
8 | 8acb1f97 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
|
9 | 8acb1f97 | Kostas Papadimitriou | # disclaimer.
|
10 | d65af928 | Kostas Papadimitriou | #
|
11 | 8acb1f97 | Kostas Papadimitriou | # 2. Redistributions in binary form must reproduce the above
|
12 | 8acb1f97 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
|
13 | 8acb1f97 | Kostas Papadimitriou | # disclaimer in the documentation and/or other materials
|
14 | 8acb1f97 | Kostas Papadimitriou | # provided with the distribution.
|
15 | d65af928 | Kostas Papadimitriou | #
|
16 | 8acb1f97 | Kostas Papadimitriou | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 | 8acb1f97 | Kostas Papadimitriou | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 | 8acb1f97 | Kostas Papadimitriou | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 | 8acb1f97 | Kostas Papadimitriou | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 | 8acb1f97 | Kostas Papadimitriou | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 | 8acb1f97 | Kostas Papadimitriou | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 | 8acb1f97 | Kostas Papadimitriou | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 | 8acb1f97 | Kostas Papadimitriou | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 | 8acb1f97 | Kostas Papadimitriou | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 | 8acb1f97 | Kostas Papadimitriou | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 | 8acb1f97 | Kostas Papadimitriou | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 | 8acb1f97 | Kostas Papadimitriou | # POSSIBILITY OF SUCH DAMAGE.
|
28 | d65af928 | Kostas Papadimitriou | #
|
29 | 8acb1f97 | Kostas Papadimitriou | # The views and conclusions contained in the software and
|
30 | 8acb1f97 | Kostas Papadimitriou | # documentation are those of the authors and should not be
|
31 | 8acb1f97 | Kostas Papadimitriou | # interpreted as representing official policies, either expressed
|
32 | 8acb1f97 | Kostas Papadimitriou | # or implied, of GRNET S.A.
|
33 | 8acb1f97 | Kostas Papadimitriou | |
34 | 83204389 | Kostas Papadimitriou | import logging |
35 | 83204389 | Kostas Papadimitriou | |
36 | 8acb1f97 | Kostas Papadimitriou | from time import time, mktime |
37 | c700f742 | Sofia Papagiannaki | from urlparse import urlparse, urlsplit, urlunsplit |
38 | 7bffb0bd | Kostas Papadimitriou | from urllib import quote, unquote, urlencode |
39 | 8acb1f97 | Kostas Papadimitriou | |
40 | 8acb1f97 | Kostas Papadimitriou | from django.conf import settings |
41 | 8acb1f97 | Kostas Papadimitriou | from django.utils import simplejson as json |
42 | c700f742 | Sofia Papagiannaki | from django.utils.http import urlencode |
43 | 8acb1f97 | Kostas Papadimitriou | |
44 | 27cfa807 | Vangelis Koukis | from synnefo.lib.pool.http import get_http_connection |
45 | 27cfa807 | Vangelis Koukis | |
46 | 83204389 | Kostas Papadimitriou | logger = logging.getLogger(__name__) |
47 | 8acb1f97 | Kostas Papadimitriou | |
48 | c700f742 | Sofia Papagiannaki | def retry(howmany): |
49 | c700f742 | Sofia Papagiannaki | def execute(func): |
50 | c700f742 | Sofia Papagiannaki | def f(*args, **kwargs): |
51 | c700f742 | Sofia Papagiannaki | attempts = 0
|
52 | cd5033bd | Sofia Papagiannaki | while True: |
53 | c700f742 | Sofia Papagiannaki | try:
|
54 | c700f742 | Sofia Papagiannaki | return func(*args, **kwargs)
|
55 | c700f742 | Sofia Papagiannaki | except Exception, e: |
56 | cd5033bd | Sofia Papagiannaki | is_last_attempt = attempts == howmany - 1
|
57 | cd5033bd | Sofia Papagiannaki | if is_last_attempt:
|
58 | cd5033bd | Sofia Papagiannaki | raise e
|
59 | c700f742 | Sofia Papagiannaki | if e.args:
|
60 | c700f742 | Sofia Papagiannaki | status = e.args[-1]
|
61 | 050485bd | Sofia Papagiannaki | # In case of Unauthorized response
|
62 | 050485bd | Sofia Papagiannaki | # or Not Found return directly
|
63 | c700f742 | Sofia Papagiannaki | if status == 401 or status == 404: |
64 | c700f742 | Sofia Papagiannaki | raise e
|
65 | c700f742 | Sofia Papagiannaki | attempts += 1
|
66 | c700f742 | Sofia Papagiannaki | return f
|
67 | c700f742 | Sofia Papagiannaki | return execute
|
68 | c700f742 | Sofia Papagiannaki | |
69 | c700f742 | Sofia Papagiannaki | def call(token, url, headers={}): |
70 | c700f742 | Sofia Papagiannaki | p = urlparse(url) |
71 | d65af928 | Kostas Papadimitriou | |
72 | 8acb1f97 | Kostas Papadimitriou | kwargs = {} |
73 | c700f742 | Sofia Papagiannaki | kwargs['headers'] = headers
|
74 | 8acb1f97 | Kostas Papadimitriou | kwargs['headers']['X-Auth-Token'] = token |
75 | 8acb1f97 | Kostas Papadimitriou | kwargs['headers']['Content-Length'] = 0 |
76 | d65af928 | Kostas Papadimitriou | |
77 | 27cfa807 | Vangelis Koukis | conn = get_http_connection(p.netloc, p.scheme) |
78 | 27cfa807 | Vangelis Koukis | try:
|
79 | 7bffb0bd | Kostas Papadimitriou | conn.request('GET', p.path + '?' + p.query, **kwargs) |
80 | 27cfa807 | Vangelis Koukis | response = conn.getresponse() |
81 | 27cfa807 | Vangelis Koukis | headers = response.getheaders() |
82 | 27cfa807 | Vangelis Koukis | headers = dict((unquote(h), unquote(v)) for h,v in headers) |
83 | 27cfa807 | Vangelis Koukis | length = response.getheader('content-length', None) |
84 | 27cfa807 | Vangelis Koukis | data = response.read(length) |
85 | 27cfa807 | Vangelis Koukis | status = int(response.status)
|
86 | 27cfa807 | Vangelis Koukis | finally:
|
87 | 27cfa807 | Vangelis Koukis | conn.close() |
88 | d65af928 | Kostas Papadimitriou | |
89 | 8acb1f97 | Kostas Papadimitriou | if status < 200 or status >= 300: |
90 | 27cfa807 | Vangelis Koukis | raise Exception(data, status) |
91 | 83204389 | Kostas Papadimitriou | |
92 | 8acb1f97 | Kostas Papadimitriou | return json.loads(data)
|
93 | 8acb1f97 | Kostas Papadimitriou | |
94 | c700f742 | Sofia Papagiannaki | |
95 | 050485bd | Sofia Papagiannaki | def authenticate( |
96 | 7bffb0bd | Kostas Papadimitriou | token, authentication_url='http://127.0.0.1:8000/im/authenticate',
|
97 | 7bffb0bd | Kostas Papadimitriou | usage=False):
|
98 | 7bffb0bd | Kostas Papadimitriou | |
99 | 7bffb0bd | Kostas Papadimitriou | if usage:
|
100 | 7bffb0bd | Kostas Papadimitriou | authentication_url += "?usage=1"
|
101 | 7bffb0bd | Kostas Papadimitriou | |
102 | c700f742 | Sofia Papagiannaki | return call(token, authentication_url)
|
103 | c700f742 | Sofia Papagiannaki | |
104 | 7bffb0bd | Kostas Papadimitriou | |
105 | c700f742 | Sofia Papagiannaki | @retry(3) |
106 | 050485bd | Sofia Papagiannaki | def get_username( |
107 | 050485bd | Sofia Papagiannaki | token, |
108 | 050485bd | Sofia Papagiannaki | uuid, |
109 | 050485bd | Sofia Papagiannaki | url='http://127.0.0.1:8000/im/service/api/v2.0/users',
|
110 | 050485bd | Sofia Papagiannaki | override_users={}): |
111 | 050485bd | Sofia Papagiannaki | if override_users:
|
112 | 050485bd | Sofia Papagiannaki | return uuid
|
113 | c700f742 | Sofia Papagiannaki | try:
|
114 | c700f742 | Sofia Papagiannaki | data = call(token, url, {'X-User-Uuid': uuid})
|
115 | c700f742 | Sofia Papagiannaki | except Exception, e: |
116 | c700f742 | Sofia Papagiannaki | raise e
|
117 | c700f742 | Sofia Papagiannaki | else:
|
118 | c700f742 | Sofia Papagiannaki | return data.get('username') |
119 | c700f742 | Sofia Papagiannaki | |
120 | c700f742 | Sofia Papagiannaki | |
121 | c700f742 | Sofia Papagiannaki | @retry(3) |
122 | 050485bd | Sofia Papagiannaki | def get_user_uuid( |
123 | 050485bd | Sofia Papagiannaki | token, |
124 | 050485bd | Sofia Papagiannaki | username, |
125 | 050485bd | Sofia Papagiannaki | url='http://127.0.0.1:8000/im/service/api/v2.0/users',
|
126 | 050485bd | Sofia Papagiannaki | override_users={}): |
127 | 050485bd | Sofia Papagiannaki | if override_users:
|
128 | 050485bd | Sofia Papagiannaki | return username
|
129 | c700f742 | Sofia Papagiannaki | try:
|
130 | c700f742 | Sofia Papagiannaki | data = call(token, url, {'X-User-Username': username})
|
131 | c700f742 | Sofia Papagiannaki | except Exception, e: |
132 | c700f742 | Sofia Papagiannaki | raise e
|
133 | c700f742 | Sofia Papagiannaki | else:
|
134 | c700f742 | Sofia Papagiannaki | return data.get('uuid') |
135 | c700f742 | Sofia Papagiannaki | |
136 | c700f742 | Sofia Papagiannaki | |
137 | 7bffb0bd | Kostas Papadimitriou | def user_for_token(token, authentication_url, override_users, usage=False): |
138 | 8acb1f97 | Kostas Papadimitriou | if not token: |
139 | 8acb1f97 | Kostas Papadimitriou | return None |
140 | d65af928 | Kostas Papadimitriou | |
141 | 8acb1f97 | Kostas Papadimitriou | if override_users:
|
142 | 8acb1f97 | Kostas Papadimitriou | try:
|
143 | 050485bd | Sofia Papagiannaki | return {'uuid': override_users[token].decode('utf8')} |
144 | 8acb1f97 | Kostas Papadimitriou | except:
|
145 | 8acb1f97 | Kostas Papadimitriou | return None |
146 | d65af928 | Kostas Papadimitriou | |
147 | 8acb1f97 | Kostas Papadimitriou | try:
|
148 | 7bffb0bd | Kostas Papadimitriou | return authenticate(token, authentication_url, usage=usage)
|
149 | 1055f3c6 | Sofia Papagiannaki | except Exception, e: |
150 | 1055f3c6 | Sofia Papagiannaki | # In case of Unauthorized response return None
|
151 | 1055f3c6 | Sofia Papagiannaki | if e.args and e.args[-1] == 401: |
152 | 1055f3c6 | Sofia Papagiannaki | return None |
153 | 1055f3c6 | Sofia Papagiannaki | raise e
|
154 | 8acb1f97 | Kostas Papadimitriou | |
155 | 050485bd | Sofia Papagiannaki | def get_user( |
156 | 050485bd | Sofia Papagiannaki | request, |
157 | 050485bd | Sofia Papagiannaki | authentication_url='http://127.0.0.1:8000/im/authenticate',
|
158 | 050485bd | Sofia Papagiannaki | override_users={}, |
159 | 7bffb0bd | Kostas Papadimitriou | fallback_token=None,
|
160 | 7bffb0bd | Kostas Papadimitriou | usage=False):
|
161 | 8acb1f97 | Kostas Papadimitriou | request.user = None
|
162 | 8acb1f97 | Kostas Papadimitriou | request.user_uniq = None
|
163 | d65af928 | Kostas Papadimitriou | |
164 | 8acb1f97 | Kostas Papadimitriou | # Try to find token in a parameter or in a request header.
|
165 | 050485bd | Sofia Papagiannaki | user = user_for_token( |
166 | 7bffb0bd | Kostas Papadimitriou | request.GET.get('X-Auth-Token'), authentication_url, override_users,
|
167 | 7bffb0bd | Kostas Papadimitriou | usage=usage) |
168 | 8acb1f97 | Kostas Papadimitriou | if not user: |
169 | 050485bd | Sofia Papagiannaki | user = user_for_token( |
170 | 050485bd | Sofia Papagiannaki | request.META.get('HTTP_X_AUTH_TOKEN'),
|
171 | 050485bd | Sofia Papagiannaki | authentication_url, |
172 | 7bffb0bd | Kostas Papadimitriou | override_users, |
173 | 7bffb0bd | Kostas Papadimitriou | usage=usage) |
174 | 8acb1f97 | Kostas Papadimitriou | if not user: |
175 | 050485bd | Sofia Papagiannaki | user = user_for_token( |
176 | 7bffb0bd | Kostas Papadimitriou | fallback_token, authentication_url, override_users, |
177 | 7bffb0bd | Kostas Papadimitriou | usage=usage) |
178 | 6b5b443b | Antony Chazapis | if not user: |
179 | 83204389 | Kostas Papadimitriou | logger.warning("Cannot retrieve user details from %s",
|
180 | 83204389 | Kostas Papadimitriou | authentication_url) |
181 | 7bffb0bd | Kostas Papadimitriou | return None |
182 | d65af928 | Kostas Papadimitriou | |
183 | 83204389 | Kostas Papadimitriou | # use user uuid, instead of email, keep email/username reference to user_id
|
184 | 83204389 | Kostas Papadimitriou | request.user_uniq = user['uuid']
|
185 | 8acb1f97 | Kostas Papadimitriou | request.user = user |
186 | 050485bd | Sofia Papagiannaki | request.user_id = user.get('username')
|
187 | 83204389 | Kostas Papadimitriou | return user
|
188 | d65af928 | Kostas Papadimitriou | |
189 | d65af928 | Kostas Papadimitriou | |
190 | d65af928 | Kostas Papadimitriou | def get_token_from_cookie(request, cookiename): |
191 | d65af928 | Kostas Papadimitriou | """
|
192 | d65af928 | Kostas Papadimitriou | Extract token from the cookie name provided. Cookie should be in the same
|
193 | d65af928 | Kostas Papadimitriou | form as astakos service sets its cookie contents::
|
194 | d65af928 | Kostas Papadimitriou |
|
195 | d65af928 | Kostas Papadimitriou | <user_uniq>|<user_token>
|
196 | d65af928 | Kostas Papadimitriou | """
|
197 | d65af928 | Kostas Papadimitriou | try:
|
198 | d65af928 | Kostas Papadimitriou | cookie_content = unquote(request.COOKIES.get(cookiename, None))
|
199 | d65af928 | Kostas Papadimitriou | return cookie_content.split("|")[1] |
200 | d65af928 | Kostas Papadimitriou | except AttributeError: |
201 | d65af928 | Kostas Papadimitriou | pass
|
202 | d65af928 | Kostas Papadimitriou | |
203 | d65af928 | Kostas Papadimitriou | return None |