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     def _login(self):
 133         (useremail, password) = self._get_login_info()
 134         if useremail is None:
 135             return
 136
 137         login_page_req = sanitized_Request(self._LOGIN_URL)
 138         self._set_cookie('facebook.com', 'locale', 'en_US')
 139         login_page = self._download_webpage(login_page_req, None,
 140                                             note='Downloading login page',
 141                                             errnote='Unable to download login page')
 142         lsd = self._search_regex(
 143             r'<input type="hidden" name="lsd" value="([^"]*)"',
 144             login_page, 'lsd')
 145         lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')
 146
 147         login_form = {
 148             'email': useremail,
 149             'pass': password,
 150             'lsd': lsd,
 151             'lgnrnd': lgnrnd,
 152             'next': 'http://facebook.com/home.php',
 153             'default_persistent': '0',
 154             'legacy_return': '1',
 155             'timezone': '-60',
 156             'trynum': '1',
 157         }
 158         request = sanitized_Request(self._LOGIN_URL, urlencode_postdata(login_form))
 159         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
 160         try:
 161             login_results = self._download_webpage(request, None,
 162                                                    note='Logging in', errnote='unable to fetch login page')
 163             if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
 164                 error = self._html_search_regex(
 165                     r'(?s)<div[^>]+class=(["\']).*?login_error_box.*?\1[^>]*><div[^>]*>.*?</div><div[^>]*>(?P<error>.+?)</div>',
 166                     login_results, 'login error', default=None, group='error')
 167                 if error:
 168                     raise ExtractorError('Unable to login: %s' % error, expected=True)
 169                 self._downloader.report_warning('unable to log in: bad username/password, or exceeded login rate limit (~3/min). Check credentials or wait.')
 170                 return
 171
 172             fb_dtsg = self._search_regex(
 173                 r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg', default=None)
 174             h = self._search_regex(
 175                 r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h', default=None)
 176
 177             if not fb_dtsg or not h:
 178                 return
 179
 180             check_form = {
 181                 'fb_dtsg': fb_dtsg,
 182                 'h': h,
 183                 'name_action_selected': 'dont_save',
 184             }
 185             check_req = sanitized_Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
 186             check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
 187             check_response = self._download_webpage(check_req, None,
 188                                                     note='Confirming login')
 189             if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
 190                 self._downloader.report_warning('Unable to confirm login, you have to login in your browser and authorize the login.')
 191         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 192             self._downloader.report_warning('unable to log in: %s' % error_to_compat_str(err))
 193             return
 194
 195     def _real_initialize(self):
 196         self._login()
 197
 198     def _extract_from_url(self, url, video_id, fatal_if_no_video=True):
 199         req = sanitized_Request(url)
 200         req.add_header('User-Agent', self._CHROME_USER_AGENT)
 201         webpage = self._download_webpage(req, video_id)
 202
 203         video_data = None
 204
 205         BEFORE = '{swf.addParam(param[0], param[1]);});'
 206         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
 207         m = re.search(re.escape(BEFORE) + '(?:\n|\\\\n)(.*?)' + re.escape(AFTER), webpage)
 208         if m:
 209             swf_params = m.group(1).replace('\\\\', '\\').replace('\\"', '"')
 210             data = dict(json.loads(swf_params))
 211             params_raw = compat_urllib_parse_unquote(data['params'])
 212             video_data = json.loads(params_raw)['video_data']
 213
 214         def video_data_list2dict(video_data):
 215             ret = {}
 216             for item in video_data:
 217                 format_id = item['stream_type']
 218                 ret.setdefault(format_id, []).append(item)
 219             return ret
 220
 221         if not video_data:
 222             server_js_data = self._parse_json(self._search_regex(
 223                 r'handleServerJS\(({.+})\);', webpage, 'server js data', default='{}'), video_id)
 224             for item in server_js_data.get('instances', []):
 225                 if item[1][0] == 'VideoConfig':
 226                     video_data = video_data_list2dict(item[2][0]['videoData'])
 227                     break
 228
 229         if not video_data:
 230             if not fatal_if_no_video:
 231                 return webpage, False
 232             m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
 233             if m_msg is not None:
 234                 raise ExtractorError(
 235                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
 236                     expected=True)
 237             else:
 238                 raise ExtractorError('Cannot parse data')
 239
 240         formats = []
 241         for format_id, f in video_data.items():
 242             if not f or not isinstance(f, list):
 243                 continue
 244             for quality in ('sd', 'hd'):
 245                 for src_type in ('src', 'src_no_ratelimit'):
 246                     src = f[0].get('%s_%s' % (quality, src_type))
 247                     if src:
 248                         preference = -10 if format_id == 'progressive' else 0
 249                         if quality == 'hd':
 250                             preference += 5
 251                         formats.append({
 252                             'format_id': '%s_%s_%s' % (format_id, quality, src_type),
 253                             'url': src,
 254                             'preference': preference,
 255                         })
 256             dash_manifest = f[0].get('dash_manifest')
 257             if dash_manifest:
 258                 formats.extend(self._parse_mpd_formats(
 259                     compat_etree_fromstring(compat_urllib_parse_unquote_plus(dash_manifest))))
 260         if not formats:
 261             raise ExtractorError('Cannot find video formats')
 262
 263         self._sort_formats(formats)
 264
 265         video_title = self._html_search_regex(
 266             r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>', webpage, 'title',
 267             default=None)
 268         if not video_title:
 269             video_title = self._html_search_regex(
 270                 r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
 271                 webpage, 'alternative title', default=None)
 272             video_title = limit_length(video_title, 80)
 273         if not video_title:
 274             video_title = 'Facebook video #%s' % video_id
 275         uploader = clean_html(get_element_by_id('fbPhotoPageAuthorName', webpage))
 276
 277         info_dict = {
 278             'id': video_id,
 279             'title': video_title,
 280             'formats': formats,
 281             'uploader': uploader,
 282         }
 283
 284         return webpage, info_dict
 285
 286     def _real_extract(self, url):
 287         video_id = self._match_id(url)
 288
 289         real_url = self._VIDEO_PAGE_TEMPLATE % video_id if url.startswith('facebook:') else url
 290         webpage, info_dict = self._extract_from_url(real_url, video_id, fatal_if_no_video=False)
 291
 292         if info_dict:
 293             return info_dict
 294
 295         if '/posts/' in url:
 296             entries = [
 297                 self.url_result('facebook:%s' % vid, FacebookIE.ie_key())
 298                 for vid in self._parse_json(
 299                     self._search_regex(
 300                         r'(["\'])video_ids\1\s*:\s*(?P<ids>\[.+?\])',
 301                         webpage, 'video ids', group='ids'),
 302                     video_id)]
 303
 304             return self.playlist_result(entries, video_id)
 305         else:
 306             _, info_dict = self._extract_from_url(
 307                 self._VIDEO_PAGE_TEMPLATE % video_id,
 308                 video_id, fatal_if_no_video=True)
 309             return info_dict