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8e1e744d | 1 | # GNU MediaGoblin -- federated, autonomous media hosting |
e5572c60 ML |
2 | # Copyright (C) 2011 Free Software Foundation, Inc |
3 | # | |
4 | # This program is free software: you can redistribute it and/or modify | |
5 | # it under the terms of the GNU Affero General Public License as published by | |
6 | # the Free Software Foundation, either version 3 of the License, or | |
7 | # (at your option) any later version. | |
8 | # | |
9 | # This program is distributed in the hope that it will be useful, | |
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | # GNU Affero General Public License for more details. | |
13 | # | |
14 | # You should have received a copy of the GNU Affero General Public License | |
15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | ||
4d4f6050 | 17 | from email.MIMEText import MIMEText |
b77eec65 CAW |
18 | import gettext |
19 | import pkg_resources | |
4d4f6050 | 20 | import smtplib |
cb8ea0fe | 21 | import sys |
0546833c | 22 | import re |
31a8ff42 | 23 | import jinja2 |
254bc431 | 24 | from mediagoblin.db.util import ObjectId |
0546833c | 25 | import translitcodec |
31a8ff42 | 26 | |
29f3fb70 CAW |
27 | from mediagoblin import globals as mgoblin_globals |
28 | ||
ae85ed0f | 29 | import urllib |
ae85ed0f | 30 | from math import ceil |
44e3e917 | 31 | import copy |
4d4f6050 CAW |
32 | |
33 | TESTS_ENABLED = False | |
34 | def _activate_testing(): | |
35 | """ | |
36 | Call this to activate testing in util.py | |
37 | """ | |
38 | global TESTS_ENABLED | |
39 | TESTS_ENABLED = True | |
40 | ||
41 | ||
0e0e3d9a | 42 | def get_jinja_loader(user_template_path=None): |
904f61c2 | 43 | """ |
0e0e3d9a | 44 | Set up the Jinja template loaders, possibly allowing for user |
904f61c2 CAW |
45 | overridden templates. |
46 | ||
47 | (In the future we may have another system for providing theming; | |
48 | for now this is good enough.) | |
49 | """ | |
31a8ff42 | 50 | if user_template_path: |
0e0e3d9a | 51 | return jinja2.ChoiceLoader( |
31a8ff42 CAW |
52 | [jinja2.FileSystemLoader(user_template_path), |
53 | jinja2.PackageLoader('mediagoblin', 'templates')]) | |
54 | else: | |
0e0e3d9a | 55 | return jinja2.PackageLoader('mediagoblin', 'templates') |
31a8ff42 | 56 | |
0e0e3d9a CAW |
57 | |
58 | def get_jinja_env(template_loader, locale): | |
59 | """ | |
60 | Set up the Jinja environment, | |
61 | ||
62 | (In the future we may have another system for providing theming; | |
63 | for now this is good enough.) | |
64 | """ | |
b77eec65 CAW |
65 | setup_gettext(locale) |
66 | ||
67 | template_env = jinja2.Environment( | |
0e0e3d9a | 68 | loader=template_loader, autoescape=True, |
20c834ff | 69 | extensions=['jinja2.ext.i18n']) |
58dec5ef | 70 | |
b77eec65 CAW |
71 | template_env.install_gettext_callables( |
72 | mgoblin_globals.translations.gettext, | |
73 | mgoblin_globals.translations.ngettext) | |
74 | ||
75 | return template_env | |
76 | ||
58dec5ef CAW |
77 | |
78 | def setup_user_in_request(request): | |
79 | """ | |
80 | Examine a request and tack on a request.user parameter if that's | |
81 | appropriate. | |
82 | """ | |
83 | if not request.session.has_key('user_id'): | |
59dd5c7e | 84 | request.user = None |
58dec5ef CAW |
85 | return |
86 | ||
5d6840a0 | 87 | user = None |
6648c52b | 88 | user = request.app.db.User.one( |
254bc431 | 89 | {'_id': ObjectId(request.session['user_id'])}) |
5d6840a0 | 90 | |
c74e1462 CAW |
91 | if not user: |
92 | # Something's wrong... this user doesn't exist? Invalidate | |
93 | # this session. | |
58dec5ef | 94 | request.session.invalidate() |
5d6840a0 CAW |
95 | |
96 | request.user = user | |
cb8ea0fe CAW |
97 | |
98 | ||
99 | def import_component(import_string): | |
100 | """ | |
101 | Import a module component defined by STRING. Probably a method, | |
102 | class, or global variable. | |
103 | ||
104 | Args: | |
105 | - import_string: a string that defines what to import. Written | |
106 | in the format of "module1.module2:component" | |
107 | """ | |
108 | module_name, func_name = import_string.split(':', 1) | |
109 | __import__(module_name) | |
110 | module = sys.modules[module_name] | |
111 | func = getattr(module, func_name) | |
112 | return func | |
4d4f6050 | 113 | |
0546833c AW |
114 | _punct_re = re.compile(r'[\t !"#$%&\'()*\-/<=>?@\[\\\]^_`{|},.]+') |
115 | ||
116 | def slugify(text, delim=u'-'): | |
117 | """ | |
118 | Generates an ASCII-only slug. Taken from http://flask.pocoo.org/snippets/5/ | |
119 | """ | |
120 | result = [] | |
121 | for word in _punct_re.split(text.lower()): | |
122 | word = word.encode('translit/long') | |
123 | if word: | |
124 | result.append(word) | |
125 | return unicode(delim.join(result)) | |
4d4f6050 CAW |
126 | |
127 | ### ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
128 | ### Special email test stuff begins HERE | |
129 | ### ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
130 | ||
131 | # We have two "test inboxes" here: | |
132 | # | |
133 | # EMAIL_TEST_INBOX: | |
134 | # ---------------- | |
135 | # If you're writing test views, you'll probably want to check this. | |
136 | # It contains a list of MIMEText messages. | |
137 | # | |
138 | # EMAIL_TEST_MBOX_INBOX: | |
139 | # ---------------------- | |
140 | # This collects the messages from the FakeMhost inbox. It's reslly | |
141 | # just here for testing the send_email method itself. | |
142 | # | |
143 | # Anyway this contains: | |
144 | # - from | |
145 | # - to: a list of email recipient addresses | |
146 | # - message: not just the body, but the whole message, including | |
147 | # headers, etc. | |
148 | # | |
149 | # ***IMPORTANT!*** | |
150 | # ---------------- | |
151 | # Before running tests that call functions which send email, you should | |
152 | # always call _clear_test_inboxes() to "wipe" the inboxes clean. | |
153 | ||
154 | EMAIL_TEST_INBOX = [] | |
155 | EMAIL_TEST_MBOX_INBOX = [] | |
156 | ||
157 | ||
158 | class FakeMhost(object): | |
159 | """ | |
160 | Just a fake mail host so we can capture and test messages | |
161 | from send_email | |
162 | """ | |
163 | def connect(self): | |
164 | pass | |
165 | ||
166 | def sendmail(self, from_addr, to_addrs, message): | |
167 | EMAIL_TEST_MBOX_INBOX.append( | |
168 | {'from': from_addr, | |
169 | 'to': to_addrs, | |
170 | 'message': message}) | |
171 | ||
172 | def _clear_test_inboxes(): | |
173 | global EMAIL_TEST_INBOX | |
174 | global EMAIL_TEST_MBOX_INBOX | |
175 | EMAIL_TEST_INBOX = [] | |
176 | EMAIL_TEST_MBOX_INBOX = [] | |
177 | ||
178 | ### ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
179 | ### </Special email test stuff> | |
180 | ### ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
181 | ||
182 | def send_email(from_addr, to_addrs, subject, message_body): | |
61ec968b CAW |
183 | """ |
184 | Simple email sending wrapper, use this so we can capture messages | |
185 | for unit testing purposes. | |
186 | ||
187 | Args: | |
188 | - from_addr: address you're sending the email from | |
189 | - to_addrs: list of recipient email addresses | |
190 | - subject: subject of the email | |
191 | - message_body: email body text | |
192 | """ | |
4d4f6050 | 193 | # TODO: make a mock mhost if testing is enabled |
29f3fb70 | 194 | if TESTS_ENABLED or mgoblin_globals.email_debug_mode: |
4d4f6050 | 195 | mhost = FakeMhost() |
29f3fb70 | 196 | elif not mgoblin_globals.email_debug_mode: |
4d4f6050 CAW |
197 | mhost = smtplib.SMTP() |
198 | ||
199 | mhost.connect() | |
200 | ||
201 | message = MIMEText(message_body.encode('utf-8'), 'plain', 'utf-8') | |
202 | message['Subject'] = subject | |
203 | message['From'] = from_addr | |
204 | message['To'] = ', '.join(to_addrs) | |
205 | ||
206 | if TESTS_ENABLED: | |
207 | EMAIL_TEST_INBOX.append(message) | |
208 | ||
21919313 | 209 | if getattr(mgoblin_globals, 'email_debug_mode', False): |
29f3fb70 CAW |
210 | print u"===== Email =====" |
211 | print u"From address: %s" % message['From'] | |
212 | print u"To addresses: %s" % message['To'] | |
213 | print u"Subject: %s" % message['Subject'] | |
214 | print u"-- Body: --" | |
215 | print message.get_payload(decode=True) | |
216 | ||
21919313 | 217 | return mhost.sendmail(from_addr, to_addrs, message.as_string()) |
20c834ff | 218 | |
8b28bee4 CAW |
219 | |
220 | ################### | |
221 | # Translation tools | |
222 | ################### | |
223 | ||
224 | ||
b77eec65 CAW |
225 | TRANSLATIONS_PATH = pkg_resources.resource_filename( |
226 | 'mediagoblin', 'translations') | |
227 | ||
228 | ||
8b28bee4 CAW |
229 | def locale_to_lower_upper(locale): |
230 | """ | |
231 | Take a locale, regardless of style, and format it like "en-us" | |
232 | """ | |
233 | if '-' in locale: | |
234 | lang, country = locale.split('-', 1) | |
235 | return '%s_%s' % (lang.lower(), country.upper()) | |
236 | elif '_' in locale: | |
237 | lang, country = locale.split('_', 1) | |
238 | return '%s_%s' % (lang.lower(), country.upper()) | |
239 | else: | |
240 | return locale.lower() | |
241 | ||
242 | ||
243 | def locale_to_lower_lower(locale): | |
244 | """ | |
245 | Take a locale, regardless of style, and format it like "en_US" | |
246 | """ | |
247 | if '_' in locale: | |
248 | lang, country = locale.split('_', 1) | |
249 | return '%s-%s' % (lang.lower(), country.lower()) | |
250 | else: | |
251 | return locale.lower() | |
252 | ||
253 | ||
254 | def get_locale_from_request(request): | |
255 | """ | |
256 | Figure out what target language is most appropriate based on the | |
257 | request | |
258 | """ | |
259 | request_form = request.GET or request.POST | |
260 | ||
261 | if request_form.has_key('lang'): | |
262 | return locale_to_lower_upper(request_form['lang']) | |
263 | ||
264 | accept_lang_matches = request.accept_language.best_matches() | |
265 | ||
266 | # Your routing can explicitly specify a target language | |
376e6ef2 CAW |
267 | if request.matchdict.has_key('locale'): |
268 | target_lang = request.matchdict['locale'] | |
8b28bee4 CAW |
269 | elif request.session.has_key('target_lang'): |
270 | target_lang = request.session['target_lang'] | |
271 | # Pull the first acceptable language | |
272 | elif accept_lang_matches: | |
273 | target_lang = accept_lang_matches[0] | |
274 | # Fall back to English | |
275 | else: | |
276 | target_lang = 'en' | |
277 | ||
0e0e3d9a | 278 | return locale_to_lower_upper(target_lang) |
b77eec65 CAW |
279 | |
280 | ||
281 | def setup_gettext(locale): | |
282 | """ | |
283 | Setup the gettext instance based on this locale | |
284 | """ | |
285 | # Later on when we have plugins we may want to enable the | |
286 | # multi-translations system they have so we can handle plugin | |
287 | # translations too | |
288 | ||
289 | # TODO: fallback nicely on translations from pt_PT to pt if not | |
290 | # available, etc. | |
291 | this_gettext = gettext.translation( | |
292 | 'mediagoblin', TRANSLATIONS_PATH, [locale], fallback=True) | |
293 | ||
294 | mgoblin_globals.setup_globals( | |
295 | translations=this_gettext) | |
ae85ed0f BK |
296 | |
297 | ||
b9e9610b CAW |
298 | PAGINATION_DEFAULT_PER_PAGE = 30 |
299 | ||
ae85ed0f BK |
300 | class Pagination(object): |
301 | """ | |
dffa0b09 CAW |
302 | Pagination class for mongodb queries. |
303 | ||
304 | Initialization through __init__(self, cursor, page=1, per_page=2), | |
305 | get actual data slice through __call__(). | |
ae85ed0f | 306 | """ |
ca3ca51c | 307 | |
b9e9610b | 308 | def __init__(self, page, cursor, per_page=PAGINATION_DEFAULT_PER_PAGE): |
44e3e917 | 309 | """ |
a98d5254 CAW |
310 | Initializes Pagination |
311 | ||
312 | Args: | |
313 | - page: requested page | |
314 | - per_page: number of objects per page | |
315 | - cursor: db cursor | |
44e3e917 BK |
316 | """ |
317 | self.page = page | |
ca3ca51c BK |
318 | self.per_page = per_page |
319 | self.cursor = cursor | |
ca3ca51c BK |
320 | self.total_count = self.cursor.count() |
321 | ||
322 | def __call__(self): | |
44e3e917 | 323 | """ |
a98d5254 | 324 | Returns slice of objects for the requested page |
44e3e917 | 325 | """ |
140e2102 CAW |
326 | return self.cursor.skip( |
327 | (self.page - 1) * self.per_page).limit(self.per_page) | |
ae85ed0f BK |
328 | |
329 | @property | |
330 | def pages(self): | |
331 | return int(ceil(self.total_count / float(self.per_page))) | |
332 | ||
333 | @property | |
334 | def has_prev(self): | |
335 | return self.page > 1 | |
336 | ||
337 | @property | |
338 | def has_next(self): | |
339 | return self.page < self.pages | |
340 | ||
341 | def iter_pages(self, left_edge=2, left_current=2, | |
342 | right_current=5, right_edge=2): | |
343 | last = 0 | |
344 | for num in xrange(1, self.pages + 1): | |
345 | if num <= left_edge or \ | |
346 | (num > self.page - left_current - 1 and \ | |
347 | num < self.page + right_current) or \ | |
348 | num > self.pages - right_edge: | |
349 | if last + 1 != num: | |
350 | yield None | |
351 | yield num | |
352 | last = num | |
44e3e917 | 353 | |
50c880ac | 354 | def get_page_url_explicit(self, base_url, get_params, page_no): |
44e3e917 | 355 | """ |
50c880ac | 356 | Get a page url by adding a page= parameter to the base url |
44e3e917 BK |
357 | """ |
358 | new_get_params = copy.copy(get_params or {}) | |
359 | new_get_params['page'] = page_no | |
360 | return "%s?%s" % ( | |
50c880ac CAW |
361 | base_url, urllib.urlencode(new_get_params)) |
362 | ||
363 | def get_page_url(self, request, page_no): | |
364 | """ | |
365 | Get a new page url based of the request, and the new page number. | |
366 | ||
367 | This is a nice wrapper around get_page_url_explicit() | |
368 | """ | |
369 | return self.get_page_url_explicit( | |
370 | request.path_info, request.GET, page_no) |