-
Notifications
You must be signed in to change notification settings - Fork 0
/
session.py
224 lines (181 loc) · 6.26 KB
/
session.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
import datetime
import pytz
from helpers import to_utc, naive_to_aware
class Session(object):
def __init__(self, **kwargs):
self.session_name = kwargs.pop('session_name')
self.server_session = kwargs.pop('server_session')
bottle = kwargs.pop('bottle', None)
if bottle:
self.cookie_request = CookieRequest(
application_name=self.session_name,
bottle_request=bottle.request)
self.cookie_response = CookieResponse(
application_name=self.session_name,
bottle_response=bottle.response)
def create(self, **kwargs):
cookie_id = self.cookie_request.get()
if cookie_id and self.server_session.get_session_entry(cookie_id):
raise Exception('Session ID already set to: {0}'.format(
self.session_id))
session_id = self.server_session.create_new_session_id(
anonymous=True,
session_name=self.session_name)
self.cookie_response.set(session_id, **kwargs)
return session_id
def update(self, **kwargs):
session_id = self.cookie_request.get()
if not session_id:
raise Exception(
'Unable to update because Session ID is not set')
self.server_session.update(session_id)
self.cookie_response.set(session_id, **kwargs)
return session_id
def expired(self):
session_id = self.cookie_request.get()
if not session_id:
return True
now = naive_to_aware(datetime.datetime.utcnow(),
pytz.timezone('UTC'))
expire = to_utc(self.server_session.get_session_entry(
session_id).expires)
if now > expire:
return True
else:
return False
def is_valid(self):
return self.exists() and not self.expired()
def exists(self):
session_id = self.cookie_request.get()
if session_id is None:
return False
user_session = self.server_session.get_session_entry(session_id)
if not user_session:
return False
return True
class SessionCookie(object):
def __init__(self, application_name):
self.application_name = application_name
def get_cookie_name(self):
return 'cookie_{0}_session_id'.format(self.application_name)
class CookieRequest(SessionCookie):
def __init__(self, **kwargs):
self.bottle_request = kwargs.pop('bottle_request')
super(CookieRequest, self).__init__(**kwargs)
def get(self):
return self.bottle_request.get_cookie(
self.get_cookie_name(), None)
def get_expiration(self):
# FIXME: get expiration from cookie
cookie = self.bottle_request.get_cookie(self.get_cookie_name())
return 0
class CookieResponse(SessionCookie):
def __init__(self, **kwargs):
self.bottle_response = kwargs.pop('bottle_response')
super(CookieResponse, self).__init__(**kwargs)
def set(self, session_id, **kwargs):
self.bottle_response.set_cookie(
self.get_cookie_name(),
session_id, **kwargs)
class ServerSession(object):
SESSION_EXPIRES = datetime.timedelta(minutes=30)
def __init__(self, db_session, sa_models):
self.db_session = db_session
self.sa_models = sa_models
def get_new_expiration(self, _from=None, expires=None):
'''
1. _from must be datetime
2. expires must be timedelta
'''
if not _from:
_from = naive_to_aware(datetime.datetime.utcnow())
if not expires:
expires = self.SESSION_EXPIRES
return _from + expires
def get_session_entry(self, session_id):
return self.db_session.query(
self.sa_models.UserSession).filter_by(
session_id=unicode(session_id)).first()
def create_new_session_id(self, **kwargs):
session_id = self.sa_models.UserSession.create_id()
user_session = self.sa_models.UserSession(
anonymous=kwargs.pop('anonymous'),
session_name=kwargs.pop('session_name'),
session_id=session_id,
expires=self.get_new_expiration(),
last_access_at=naive_to_aware(datetime.datetime.utcnow()))
self.db_session.add(user_session)
self.db_session.commit()
return user_session.session_id
def update(self, session_id):
user_session = self.get_session_entry(session_id)
user_session.expires = self.get_new_expiration()
user_session.last_access_at = naive_to_aware(
datetime.datetime.utcnow())
self.db_session.add(user_session)
self.db_session.commit()
return user_session.session_id
if __name__ == '__main__':
import unittest
import urllib2
import db
SERVER_HOST = 'localhost:8080'
class TestSession(unittest.TestCase):
def _setup_sqlalchemy(self):
self.sa_session = db.db_session()
self.sa_models = db
def setUp(self):
self.application_name = 'testapp'
self.cookie_session_name = 'cookie_{0}_session_id'.format(
self.application_name)
self._setup_sqlalchemy()
def _extract_cookies(self, response):
import Cookie as cookie
cookies = [v for k, v in response.headers.items() if k.lower() == 'set-cookie']
header_keys = map(lambda x: x.lower(), response.headers.keys())
self.assertIn('set-cookie', header_keys)
simple_cookies = [cookie.SimpleCookie(r) for r in cookies]
self.assertTrue(len(simple_cookies) > 0)
return simple_cookies
def _simple_cookies_to_headers(self, sc):
a = []
for s in sc:
d = {}
d['Cookie'] = s.output(header='').strip()
a.append(d)
return a
def test_cookie_name(self):
import bottle
ss = Session(session_name=self.cookie_session_name,
server_session=ServerSession(
db_session=self.sa_session,
sa_models=self.sa_models),
bottle=bottle)
self.assertIn(self.cookie_session_name,
ss.cookie_request.get_cookie_name())
self.assertIn(self.cookie_session_name,
ss.cookie_response.get_cookie_name())
def test_create_cookie(self):
req = urllib2.Request(url='http://localhost:8080')
response = urllib2.urlopen(req)
simple_cookies = self._extract_cookies(response)
self.assertTrue(response is not None)
cookie_headers = self._simple_cookies_to_headers(simple_cookies)
self.assertTrue(
'Cookie' not in [
c.values() for c in cookie_headers])
self.assertRegexpMatches(simple_cookies[0].output(header=''),
r'[a-z_]*=[a-z0-9]*')
return simple_cookies, cookie_headers
def test_get_existing_cookie(self):
simple_cookies, cookie_headers = self.test_create_cookie()
prev_cookie_id = simple_cookies[0][
self.cookie_session_name].value
req = urllib2.Request(
url='http://localhost:8080',
headers=cookie_headers[0])
response = urllib2.urlopen(req)
simple_cookies = self._extract_cookies(response)
self.assertEqual(prev_cookie_id,
simple_cookies[0][self.cookie_session_name].value)
unittest.main()