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[youtube-dl.git] / youtube_dl / extractor / facebook.py
1 from __future__ import unicode_literals
2
3 import json
4 import re
5 import socket
6
7 from .common import InfoExtractor
8 from ..compat import (
9     compat_etree_fromstring,
10     compat_http_client,
11     compat_urllib_error,
12     compat_urllib_parse_unquote,
13     compat_urllib_parse_unquote_plus,
14 )
15 from ..utils import (
16     error_to_compat_str,
17     ExtractorError,
18     limit_length,
19     sanitized_Request,
20     urlencode_postdata,
21     get_element_by_id,
22     clean_html,
23 )
24
25
26 class FacebookIE(InfoExtractor):
27     _VALID_URL = r'''(?x)
28                 (?:
29                     https?://
30                         (?:\w+\.)?facebook\.com/
31                         (?:[^#]*?\#!/)?
32                         (?:
33                             (?:
34                                 video/video\.php|
35                                 photo\.php|
36                                 video\.php|
37                                 video/embed|
38                                 story\.php
39                             )\?(?:.*?)(?:v|video_id|story_fbid)=|
40                             [^/]+/videos/(?:[^/]+/)?|
41                             [^/]+/posts/|
42                             groups/[^/]+/permalink/
43                         )|
44                     facebook:
45                 )
46                 (?P<id>[0-9]+)
47                 '''
48     _LOGIN_URL = 'https://www.facebook.com/login.php?next=http%3A%2F%2Ffacebook.com%2Fhome.php&login_attempt=1'
49     _CHECKPOINT_URL = 'https://www.facebook.com/checkpoint/?next=http%3A%2F%2Ffacebook.com%2Fhome.php&_fb_noscript=1'
50     _NETRC_MACHINE = 'facebook'
51     IE_NAME = 'facebook'
52
53     _CHROME_USER_AGENT = 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36'
54
55     _VIDEO_PAGE_TEMPLATE = 'https://www.facebook.com/video/video.php?v=%s'
56
57     _TESTS = [{
58         'url': 'https://www.facebook.com/video.php?v=637842556329505&fref=nf',
59         'md5': '6a40d33c0eccbb1af76cf0485a052659',
60         'info_dict': {
61             'id': '637842556329505',
62             'ext': 'mp4',
63             'title': 're:Did you know Kei Nishikori is the first Asian man to ever reach a Grand Slam',
64             'uploader': 'Tennis on Facebook',
65         }
66     }, {
67         'note': 'Video without discernible title',
68         'url': 'https://www.facebook.com/video.php?v=274175099429670',
69         'info_dict': {
70             'id': '274175099429670',
71             'ext': 'mp4',
72             'title': 'Facebook video #274175099429670',
73             'uploader': 'Asif Nawab Butt',
74         },
75         'expected_warnings': [
76             'title'
77         ]
78     }, {
79         'note': 'Video with DASH manifest',
80         'url': 'https://www.facebook.com/video.php?v=957955867617029',
81         'md5': '54706e4db4f5ad58fbad82dde1f1213f',
82         'info_dict': {
83             'id': '957955867617029',
84             'ext': 'mp4',
85             'title': 'When you post epic content on instagram.com/433 8 million followers, this is ...',
86             'uploader': 'Demy de Zeeuw',
87         },
88     }, {
89         'url': 'https://www.facebook.com/maxlayn/posts/10153807558977570',
90         'md5': '037b1fa7f3c2d02b7a0d7bc16031ecc6',
91         'info_dict': {
92             'id': '544765982287235',
93             'ext': 'mp4',
94             'title': '"What are you doing running in the snow?"',
95             'uploader': 'FailArmy',
96         }
97     }, {
98         'url': 'https://m.facebook.com/story.php?story_fbid=1035862816472149&id=116132035111903',
99         'md5': '1deb90b6ac27f7efcf6d747c8a27f5e3',
100         'info_dict': {
101             'id': '1035862816472149',
102             'ext': 'mp4',
103             'title': 'What the Flock Is Going On In New Zealand  Credit: ViralHog',
104             'uploader': 'S. Saint',
105         },
106     }, {
107         'note': 'swf params escaped',
108         'url': 'https://www.facebook.com/barackobama/posts/10153664894881749',
109         'md5': '97ba073838964d12c70566e0085c2b91',
110         'info_dict': {
111             'id': '10153664894881749',
112             'ext': 'mp4',
113             'title': 'Facebook video #10153664894881749',
114         },
115     }, {
116         'url': 'https://www.facebook.com/video.php?v=10204634152394104',
117         'only_matching': True,
118     }, {
119         'url': 'https://www.facebook.com/amogood/videos/1618742068337349/?fref=nf',
120         'only_matching': True,
121     }, {
122         'url': 'https://www.facebook.com/ChristyClarkForBC/videos/vb.22819070941/10153870694020942/?type=2&theater',
123         'only_matching': True,
124     }, {
125         'url': 'facebook:544765982287235',
126         'only_matching': True,
127     }, {
128         'url': 'https://www.facebook.com/groups/164828000315060/permalink/764967300301124/',
129         'only_matching': True,
130     }]
131
132     @staticmethod
133     def _extract_url(webpage):
134         mobj = re.search(
135             r'<iframe[^>]+?src=(["\'])(?P<url>https://www\.facebook\.com/video/embed.+?)\1', webpage)
136         if mobj is not None:
137             return mobj.group('url')
138
139         # Facebook API embed
140         # see https://developers.facebook.com/docs/plugins/embedded-video-player
141         mobj = re.search(r'''(?x)<div[^>]+
142                 class=(?P<q1>[\'"])[^\'"]*\bfb-video\b[^\'"]*(?P=q1)[^>]+
143                 data-href=(?P<q2>[\'"])(?P<url>[^\'"]+)(?P=q2)''', webpage)
144         if mobj is not None:
145             return mobj.group('url')
146
147     def _login(self):
148         (useremail, password) = self._get_login_info()
149         if useremail is None:
150             return
151
152         login_page_req = sanitized_Request(self._LOGIN_URL)
153         self._set_cookie('facebook.com', 'locale', 'en_US')
154         login_page = self._download_webpage(login_page_req, None,
155                                             note='Downloading login page',
156                                             errnote='Unable to download login page')
157         lsd = self._search_regex(
158             r'<input type="hidden" name="lsd" value="([^"]*)"',
159             login_page, 'lsd')
160         lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')
161
162         login_form = {
163             'email': useremail,
164             'pass': password,
165             'lsd': lsd,
166             'lgnrnd': lgnrnd,
167             'next': 'http://facebook.com/home.php',
168             'default_persistent': '0',
169             'legacy_return': '1',
170             'timezone': '-60',
171             'trynum': '1',
172         }
173         request = sanitized_Request(self._LOGIN_URL, urlencode_postdata(login_form))
174         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
175         try:
176             login_results = self._download_webpage(request, None,
177                                                    note='Logging in', errnote='unable to fetch login page')
178             if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
179                 error = self._html_search_regex(
180                     r'(?s)<div[^>]+class=(["\']).*?login_error_box.*?\1[^>]*><div[^>]*>.*?</div><div[^>]*>(?P<error>.+?)</div>',
181                     login_results, 'login error', default=None, group='error')
182                 if error:
183                     raise ExtractorError('Unable to login: %s' % error, expected=True)
184                 self._downloader.report_warning('unable to log in: bad username/password, or exceeded login rate limit (~3/min). Check credentials or wait.')
185                 return
186
187             fb_dtsg = self._search_regex(
188                 r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg', default=None)
189             h = self._search_regex(
190                 r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h', default=None)
191
192             if not fb_dtsg or not h:
193                 return
194
195             check_form = {
196                 'fb_dtsg': fb_dtsg,
197                 'h': h,
198                 'name_action_selected': 'dont_save',
199             }
200             check_req = sanitized_Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
201             check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
202             check_response = self._download_webpage(check_req, None,
203                                                     note='Confirming login')
204             if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
205                 self._downloader.report_warning('Unable to confirm login, you have to login in your browser and authorize the login.')
206         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
207             self._downloader.report_warning('unable to log in: %s' % error_to_compat_str(err))
208             return
209
210     def _real_initialize(self):
211         self._login()
212
213     def _extract_from_url(self, url, video_id, fatal_if_no_video=True):
214         req = sanitized_Request(url)
215         req.add_header('User-Agent', self._CHROME_USER_AGENT)
216         webpage = self._download_webpage(req, video_id)
217
218         video_data = None
219
220         BEFORE = '{swf.addParam(param[0], param[1]);});'
221         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
222         m = re.search(re.escape(BEFORE) + '(?:\n|\\\\n)(.*?)' + re.escape(AFTER), webpage)
223         if m:
224             swf_params = m.group(1).replace('\\\\', '\\').replace('\\"', '"')
225             data = dict(json.loads(swf_params))
226             params_raw = compat_urllib_parse_unquote(data['params'])
227             video_data = json.loads(params_raw)['video_data']
228
229         def video_data_list2dict(video_data):
230             ret = {}
231             for item in video_data:
232                 format_id = item['stream_type']
233                 ret.setdefault(format_id, []).append(item)
234             return ret
235
236         if not video_data:
237             server_js_data = self._parse_json(self._search_regex(
238                 r'handleServerJS\(({.+})\);', webpage, 'server js data', default='{}'), video_id)
239             for item in server_js_data.get('instances', []):
240                 if item[1][0] == 'VideoConfig':
241                     video_data = video_data_list2dict(item[2][0]['videoData'])
242                     break
243
244         if not video_data:
245             if not fatal_if_no_video:
246                 return webpage, False
247             m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
248             if m_msg is not None:
249                 raise ExtractorError(
250                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
251                     expected=True)
252             else:
253                 raise ExtractorError('Cannot parse data')
254
255         formats = []
256         for format_id, f in video_data.items():
257             if f and isinstance(f, dict):
258                 f = [f]
259             if not f or not isinstance(f, list):
260                 continue
261             for quality in ('sd', 'hd'):
262                 for src_type in ('src', 'src_no_ratelimit'):
263                     src = f[0].get('%s_%s' % (quality, src_type))
264                     if src:
265                         preference = -10 if format_id == 'progressive' else 0
266                         if quality == 'hd':
267                             preference += 5
268                         formats.append({
269                             'format_id': '%s_%s_%s' % (format_id, quality, src_type),
270                             'url': src,
271                             'preference': preference,
272                         })
273             dash_manifest = f[0].get('dash_manifest')
274             if dash_manifest:
275                 formats.extend(self._parse_mpd_formats(
276                     compat_etree_fromstring(compat_urllib_parse_unquote_plus(dash_manifest))))
277         if not formats:
278             raise ExtractorError('Cannot find video formats')
279
280         self._sort_formats(formats)
281
282         video_title = self._html_search_regex(
283             r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>', webpage, 'title',
284             default=None)
285         if not video_title:
286             video_title = self._html_search_regex(
287                 r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
288                 webpage, 'alternative title', default=None)
289             video_title = limit_length(video_title, 80)
290         if not video_title:
291             video_title = 'Facebook video #%s' % video_id
292         uploader = clean_html(get_element_by_id('fbPhotoPageAuthorName', webpage))
293
294         info_dict = {
295             'id': video_id,
296             'title': video_title,
297             'formats': formats,
298             'uploader': uploader,
299         }
300
301         return webpage, info_dict
302
303     def _real_extract(self, url):
304         video_id = self._match_id(url)
305
306         real_url = self._VIDEO_PAGE_TEMPLATE % video_id if url.startswith('facebook:') else url
307         webpage, info_dict = self._extract_from_url(real_url, video_id, fatal_if_no_video=False)
308
309         if info_dict:
310             return info_dict
311
312         if '/posts/' in url:
313             entries = [
314                 self.url_result('facebook:%s' % vid, FacebookIE.ie_key())
315                 for vid in self._parse_json(
316                     self._search_regex(
317                         r'(["\'])video_ids\1\s*:\s*(?P<ids>\[.+?\])',
318                         webpage, 'video ids', group='ids'),
319                     video_id)]
320
321             return self.playlist_result(entries, video_id)
322         else:
323             _, info_dict = self._extract_from_url(
324                 self._VIDEO_PAGE_TEMPLATE % video_id,
325                 video_id, fatal_if_no_video=True)
326             return info_dict