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1 | #!/usr/bin/python | |
2 | ||
3 | import logging | |
4 | import tornado.web | |
5 | ||
6 | from . import base | |
7 | ||
8 | class CacheMixin(object): | |
9 | def prepare(self): | |
10 | # Mark this as private when someone is logged in | |
11 | if self.current_user: | |
12 | self.add_header("Cache-Control", "private") | |
13 | ||
14 | self.add_header("Vary", "Cookie") | |
15 | ||
16 | ||
17 | class AuthenticationMixin(CacheMixin): | |
18 | def login(self, account): | |
19 | # User has logged in, create a session | |
20 | session_id, session_expires = self.backend.accounts.create_session( | |
21 | account, self.request.host) | |
22 | ||
23 | # Check if a new session was created | |
24 | if not session_id: | |
25 | raise tornado.web.HTTPError(500, "Could not create session") | |
26 | ||
27 | # Send session cookie to the client | |
28 | self.set_cookie("session_id", session_id, | |
29 | domain=self.request.host, expires=session_expires) | |
30 | ||
31 | def logout(self): | |
32 | session_id = self.get_cookie("session_id") | |
33 | if not session_id: | |
34 | return | |
35 | ||
36 | success = self.backend.accounts.destroy_session(session_id, self.request.host) | |
37 | if success: | |
38 | self.clear_cookie("session_id") | |
39 | ||
40 | ||
41 | class LoginHandler(AuthenticationMixin, base.BaseHandler): | |
42 | def get(self): | |
43 | next = self.get_argument("next", None) | |
44 | ||
45 | self.render("auth/login.html", next=next, | |
46 | incorrect=False, username=None) | |
47 | ||
48 | @base.ratelimit(minutes=15, requests=10) | |
49 | def post(self): | |
50 | username = self.get_argument("username") | |
51 | password = self.get_argument("password") | |
52 | next = self.get_argument("next", "/") | |
53 | ||
54 | # Find user | |
55 | account = self.backend.accounts.auth(username, password) | |
56 | if not account: | |
57 | logging.error("Unknown user or invalid password: %s" % username) | |
58 | ||
59 | # Set status to 401 | |
60 | self.set_status(401) | |
61 | ||
62 | # Render login page again | |
63 | return self.render("auth/login.html", | |
64 | incorrect=True, username=username, next=next, | |
65 | ) | |
66 | ||
67 | # Create session | |
68 | with self.db.transaction(): | |
69 | self.login(account) | |
70 | ||
71 | # Redirect the user | |
72 | return self.redirect(next) | |
73 | ||
74 | ||
75 | class LogoutHandler(AuthenticationMixin, base.BaseHandler): | |
76 | def get(self): | |
77 | with self.db.transaction(): | |
78 | self.logout() | |
79 | ||
80 | # Get back to the start page | |
81 | self.redirect("/") | |
82 | ||
83 | ||
84 | class RegisterHandler(CacheMixin, base.BaseHandler): | |
85 | def get(self): | |
86 | # Redirect logged in users away | |
87 | if self.current_user: | |
88 | self.redirect("/") | |
89 | ||
90 | self.render("auth/register.html") | |
91 | ||
92 | @base.ratelimit(minutes=15, requests=5) | |
93 | async def post(self): | |
94 | uid = self.get_argument("uid") | |
95 | email = self.get_argument("email") | |
96 | ||
97 | first_name = self.get_argument("first_name") | |
98 | last_name = self.get_argument("last_name") | |
99 | ||
100 | # Check if this is a spam account | |
101 | is_spam = await self.backend.accounts.check_spam(uid, email, | |
102 | address=self.get_remote_ip()) | |
103 | ||
104 | if is_spam: | |
105 | self.render("auth/register-spam.html") | |
106 | return | |
107 | ||
108 | # Register account | |
109 | try: | |
110 | with self.db.transaction(): | |
111 | self.backend.accounts.register(uid, email, | |
112 | first_name=first_name, last_name=last_name, | |
113 | country_code=self.current_country_code) | |
114 | except ValueError as e: | |
115 | raise tornado.web.HTTPError(400, "%s" % e) from e | |
116 | ||
117 | self.render("auth/register-success.html") | |
118 | ||
119 | ||
120 | class ActivateHandler(AuthenticationMixin, base.BaseHandler): | |
121 | def get(self, uid, activation_code): | |
122 | self.render("auth/activate.html") | |
123 | ||
124 | def post(self, uid, activation_code): | |
125 | password1 = self.get_argument("password1") | |
126 | password2 = self.get_argument("password2") | |
127 | ||
128 | if not password1 == password2: | |
129 | raise tornado.web.HTTPError(400, "Passwords do not match") | |
130 | ||
131 | with self.db.transaction(): | |
132 | account = self.backend.accounts.activate(uid, activation_code) | |
133 | if not account: | |
134 | raise tornado.web.HTTPError(400, "Account not found: %s" % uid) | |
135 | ||
136 | # Set the new password | |
137 | account.passwd(password1) | |
138 | ||
139 | # Create session | |
140 | self.login(account) | |
141 | ||
142 | # Redirect to success page | |
143 | self.render("auth/activated.html", account=account) | |
144 | ||
145 | ||
146 | class PasswordResetInitiationHandler(CacheMixin, base.BaseHandler): | |
147 | def get(self): | |
148 | username = self.get_argument("username", None) | |
149 | ||
150 | self.render("auth/password-reset-initiation.html", username=username) | |
151 | ||
152 | @base.ratelimit(minutes=15, requests=10) | |
153 | def post(self): | |
154 | username = self.get_argument("username") | |
155 | ||
156 | # Fetch account and submit password reset | |
157 | account = self.backend.accounts.get_by_uid(username) | |
158 | if account: | |
159 | with self.db.transaction(): | |
160 | account.request_password_reset() | |
161 | ||
162 | self.render("auth/password-reset-successful.html") | |
163 | ||
164 | ||
165 | class PasswordResetHandler(AuthenticationMixin, base.BaseHandler): | |
166 | def get(self, uid, reset_code): | |
167 | account = self.backend.accounts.get_by_uid(uid) | |
168 | if not account: | |
169 | raise tornado.web.HTTPError(404, "Could not find account: %s" % uid) | |
170 | ||
171 | self.render("auth/password-reset.html", account=account) | |
172 | ||
173 | def post(self, uid, reset_code): | |
174 | account = self.backend.accounts.get_by_uid(uid) | |
175 | if not account: | |
176 | raise tornado.web.HTTPError(404, "Could not find account: %s" % uid) | |
177 | ||
178 | password1 = self.get_argument("password1") | |
179 | password2 = self.get_argument("password2") | |
180 | ||
181 | if not password1 == password2: | |
182 | raise tornado.web.HTTPError(400, "Passwords do not match") | |
183 | ||
184 | # Try to perform password reset | |
185 | with self.db.transaction(): | |
186 | account.reset_password(reset_code, password1) | |
187 | ||
188 | # Login the user straight away after reset was successful | |
189 | self.login(account) | |
190 | ||
191 | # Redirect back to / | |
192 | self.redirect("/") | |
193 | ||
194 | ||
195 | class APICheckUID(base.APIHandler): | |
196 | @base.ratelimit(minutes=5, requests=100) | |
197 | def get(self): | |
198 | uid = self.get_argument("uid") | |
199 | result = None | |
200 | ||
201 | if not uid: | |
202 | result = "empty" | |
203 | ||
204 | # Check if the username is syntactically valid | |
205 | elif not self.backend.accounts.uid_is_valid(uid): | |
206 | result = "invalid" | |
207 | ||
208 | # Check if the username is already taken | |
209 | elif self.backend.accounts.uid_exists(uid): | |
210 | result = "taken" | |
211 | ||
212 | # Username seems to be okay | |
213 | self.finish({ "result" : result or "ok" }) |