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a29d3526 MM |
1 | #!/usr/bin/env python |
2 | ||
36f274c0 MM |
3 | |
4 | """This module abstracts connection to pod. | |
5 | """ | |
6 | ||
7 | ||
b74513c5 | 8 | import json |
8993810c MM |
9 | import re |
10 | import requests | |
ff3d2ab4 | 11 | import warnings |
8993810c | 12 | |
2cf8467c MM |
13 | from diaspy import errors |
14 | ||
a29d3526 | 15 | |
36f274c0 | 16 | DEBUG = True |
178faa46 MM |
17 | |
18 | ||
a29d3526 | 19 | class Connection(): |
1cff2093 | 20 | """Object representing connection with the pod. |
a29d3526 | 21 | """ |
27a28aaf | 22 | _token_regex = re.compile(r'content="(.*?)"\s+name="csrf-token') |
39af9756 MM |
23 | _userinfo_regex = re.compile(r'window.current_user_attributes = ({.*})') |
24 | # this is for older version of D* | |
25 | _userinfo_regex_2 = re.compile(r'gon.user=({.*});gon.preloads') | |
27a28aaf | 26 | |
36f274c0 | 27 | def __init__(self, pod, username, password, schema='https'): |
8993810c MM |
28 | """ |
29 | :param pod: The complete url of the diaspora pod to use. | |
30 | :type pod: str | |
31 | :param username: The username used to log in. | |
32 | :type username: str | |
33 | :param password: The password used to log in. | |
34 | :type password: str | |
35 | """ | |
a29d3526 | 36 | self.pod = pod |
2cf8467c | 37 | self._session = requests.Session() |
36f274c0 | 38 | self._login_data = {'user[remember_me]': 1, 'utf8': '✓'} |
5de52803 | 39 | self._userdata = {} |
2cf8467c | 40 | self._token = '' |
5de52803 | 41 | self._diaspora_session = '' |
36f274c0 | 42 | self._cookies = self._fetchcookies() |
2cf8467c | 43 | try: |
36f274c0 MM |
44 | #self._setlogin(username, password) |
45 | self._login_data = {'user[username]': username, | |
46 | 'user[password]': password, | |
47 | 'authenticity_token': self._fetchtoken()} | |
48 | success = True | |
75a456f4 MM |
49 | except requests.exceptions.MissingSchema: |
50 | self.pod = '{0}://{1}'.format(schema, self.pod) | |
51 | warnings.warn('schema was missing') | |
36f274c0 | 52 | success = False |
2cf8467c MM |
53 | finally: |
54 | pass | |
55 | try: | |
36f274c0 MM |
56 | if not success: |
57 | self._login_data = {'user[username]': username, | |
58 | 'user[password]': password, | |
59 | 'authenticity_token': self._fetchtoken()} | |
2cf8467c MM |
60 | except Exception as e: |
61 | raise errors.LoginError('cannot create login data (caused by: {0})'.format(e)) | |
8993810c | 62 | |
36f274c0 MM |
63 | def _fetchcookies(self): |
64 | request = self.get('stream') | |
65 | return request.cookies | |
66 | ||
d4bd92cd MM |
67 | def __repr__(self): |
68 | """Returns token string. | |
69 | It will be easier to change backend if programs will just use: | |
70 | repr(connection) | |
71 | instead of calling a specified method. | |
72 | """ | |
cf6a800f | 73 | return self._fetchtoken() |
d4bd92cd | 74 | |
36f274c0 | 75 | def get(self, string, headers={}, params={}, direct=False, **kwargs): |
8993810c MM |
76 | """This method gets data from session. |
77 | Performs additional checks if needed. | |
78 | ||
79 | Example: | |
7a31b4aa | 80 | To obtain 'foo' from pod one should call `get('foo')`. |
8993810c MM |
81 | |
82 | :param string: URL to get without the pod's URL and slash eg. 'stream'. | |
83 | :type string: str | |
73a9e0d3 MM |
84 | :param direct: if passed as True it will not be expanded |
85 | :type direct: bool | |
8993810c | 86 | """ |
73a9e0d3 MM |
87 | if not direct: url = '{0}/{1}'.format(self.pod, string) |
88 | else: url = string | |
36f274c0 | 89 | return self._session.get(url, params=params, headers=headers, **kwargs) |
8993810c | 90 | |
36f274c0 | 91 | def post(self, string, data, headers={}, params={}, **kwargs): |
8993810c MM |
92 | """This method posts data to session. |
93 | Performs additional checks if needed. | |
94 | ||
95 | Example: | |
7a31b4aa | 96 | To post to 'foo' one should call `post('foo', data={})`. |
8993810c MM |
97 | |
98 | :param string: URL to post without the pod's URL and slash eg. 'status_messages'. | |
99 | :type string: str | |
100 | :param data: Data to post. | |
101 | :param headers: Headers (optional). | |
102 | :type headers: dict | |
103 | :param params: Parameters (optional). | |
104 | :type params: dict | |
105 | """ | |
106 | string = '{0}/{1}'.format(self.pod, string) | |
36f274c0 | 107 | request = self._session.post(string, data, headers=headers, params=params, **kwargs) |
8993810c MM |
108 | return request |
109 | ||
36f274c0 | 110 | def put(self, string, data=None, headers={}, params={}, **kwargs): |
178faa46 MM |
111 | """This method PUTs to session. |
112 | """ | |
113 | string = '{0}/{1}'.format(self.pod, string) | |
36f274c0 MM |
114 | if data is not None: request = self._session.put(string, data, headers=headers, params=params, **kwargs) |
115 | else: request = self._session.put(string, headers=headers, params=params, **kwargs) | |
178faa46 MM |
116 | return request |
117 | ||
36f274c0 | 118 | def delete(self, string, data, headers={}, **kwargs): |
8993810c MM |
119 | """This method lets you send delete request to session. |
120 | Performs additional checks if needed. | |
121 | ||
122 | :param string: URL to use. | |
123 | :type string: str | |
124 | :param data: Data to use. | |
125 | :param headers: Headers to use (optional). | |
126 | :type headers: dict | |
127 | """ | |
128 | string = '{0}/{1}'.format(self.pod, string) | |
36f274c0 | 129 | request = self._session.delete(string, data=data, headers=headers, **kwargs) |
8993810c MM |
130 | return request |
131 | ||
132 | def _setlogin(self, username, password): | |
133 | """This function is used to set data for login. | |
b0b4c46d | 134 | |
8993810c MM |
135 | .. note:: |
136 | It should be called before _login() function. | |
137 | """ | |
2cf8467c MM |
138 | self._login_data = {'user[username]': username, |
139 | 'user[password]': password, | |
140 | 'authenticity_token': self._fetchtoken()} | |
8993810c | 141 | |
385e7ebe MM |
142 | def _login(self): |
143 | """Handles actual login request. | |
144 | Raises LoginError if login failed. | |
145 | """ | |
146 | request = self.post('users/sign_in', | |
36f274c0 MM |
147 | data=self._login_data, |
148 | allow_redirects=False) | |
149 | if request.status_code != 302: | |
2cf8467c | 150 | raise errors.LoginError('{0}: login failed'.format(request.status_code)) |
385e7ebe | 151 | |
36f274c0 | 152 | def login(self, remember_me=1): |
385e7ebe MM |
153 | """This function is used to log in to a pod. |
154 | Will raise LoginError if password or username was not specified. | |
8993810c | 155 | """ |
2cf8467c MM |
156 | if not self._login_data['user[username]'] or not self._login_data['user[password]']: |
157 | raise errors.LoginError('username and/or password is not specified') | |
36f274c0 MM |
158 | self._login_data['user[remember_me]'] = remember_me |
159 | status = self._login() | |
2cf8467c | 160 | self._login_data = {} |
f3b7fd44 | 161 | return self |
385e7ebe | 162 | |
63cc182d MM |
163 | def logout(self): |
164 | """Logs out from a pod. | |
165 | When logged out you can't do anything. | |
166 | """ | |
167 | self.get('users/sign_out') | |
b0b4c46d | 168 | self.token = '' |
63cc182d | 169 | |
2cf8467c | 170 | def podswitch(self, pod, username, password): |
7a31b4aa | 171 | """Switches pod from current to another one. |
385e7ebe MM |
172 | """ |
173 | self.pod = pod | |
2cf8467c | 174 | self._setlogin(username, password) |
385e7ebe | 175 | self._login() |
8993810c | 176 | |
b0b4c46d MM |
177 | def _fetchtoken(self): |
178 | """This method tries to get token string needed for authentication on D*. | |
179 | ||
180 | :returns: token string | |
181 | """ | |
182 | request = self.get('stream') | |
183 | token = self._token_regex.search(request.text).group(1) | |
2cf8467c | 184 | self._token = token |
b0b4c46d | 185 | return token |
2ec93347 | 186 | |
2b6b487e | 187 | def get_token(self, fetch=True): |
385e7ebe | 188 | """This function returns a token needed for authentication in most cases. |
2cf8467c | 189 | **Notice:** using repr() is recommended method for getting token. |
a29d3526 | 190 | |
b0b4c46d MM |
191 | Each time it is run a _fetchtoken() is called and refreshed token is stored. |
192 | ||
193 | It is more safe to use than _fetchtoken(). | |
ff3d2ab4 | 194 | By setting new you can request new token or decide to get stored one. |
2b6b487e | 195 | If no token is stored new one will be fetched anyway. |
a29d3526 | 196 | |
8993810c MM |
197 | :returns: string -- token used to authenticate |
198 | """ | |
b0b4c46d | 199 | try: |
36f274c0 | 200 | if fetch or not self._token: self._fetchtoken() |
b0b4c46d | 201 | except requests.exceptions.ConnectionError as e: |
ff3d2ab4 | 202 | warnings.warn('{0} was cought: reusing old token'.format(e)) |
b0b4c46d | 203 | finally: |
2cf8467c MM |
204 | if not self._token: raise errors.TokenError('cannot obtain token and no previous token found for reuse') |
205 | return self._token | |
5de52803 MM |
206 | |
207 | def getSessionToken(self): | |
208 | """Returns session token string (_diaspora_session). | |
209 | """ | |
210 | return self._diaspora_session | |
39af9756 MM |
211 | |
212 | def getUserData(self): | |
213 | """Returns user data. | |
214 | """ | |
215 | request = self.get('bookmarklet') | |
216 | userdata = self._userinfo_regex.search(request.text) | |
217 | if userdata is None: userdata = self._userinfo_regex_2.search(request.text) | |
218 | if userdata is None: raise errors.DiaspyError('cannot find user data') | |
219 | userdata = userdata.group(1) | |
220 | return json.loads(userdata) |