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_http_client,
  10     compat_urllib_error,
  11     compat_urllib_parse_unquote,
  12 )
  13 from ..utils import (
  14     error_to_compat_str,
  15     ExtractorError,
  16     limit_length,
  17     sanitized_Request,
  18     urlencode_postdata,
  19     get_element_by_id,
  20     clean_html,
  21 )
  22
  23
  24 class FacebookIE(InfoExtractor):
  25     _VALID_URL = r'''(?x)
  26                 (?:
  27                     https?://
  28                         (?:\w+\.)?facebook\.com/
  29                         (?:[^#]*?\#!/)?
  30                         (?:
  31                             (?:
  32                                 video/video\.php|
  33                                 photo\.php|
  34                                 video\.php|
  35                                 video/embed
  36                             )\?(?:.*?)(?:v|video_id)=|
  37                             [^/]+/videos/(?:[^/]+/)?
  38                         )|
  39                     facebook:
  40                 )
  41                 (?P<id>[0-9]+)
  42                 '''
  43     _LOGIN_URL = 'https://www.facebook.com/login.php?next=http%3A%2F%2Ffacebook.com%2Fhome.php&login_attempt=1'
  44     _CHECKPOINT_URL = 'https://www.facebook.com/checkpoint/?next=http%3A%2F%2Ffacebook.com%2Fhome.php&_fb_noscript=1'
  45     _NETRC_MACHINE = 'facebook'
  46     IE_NAME = 'facebook'
  47     _TESTS = [{
  48         'url': 'https://www.facebook.com/video.php?v=637842556329505&fref=nf',
  49         'md5': '6a40d33c0eccbb1af76cf0485a052659',
  50         'info_dict': {
  51             'id': '637842556329505',
  52             'ext': 'mp4',
  53             'title': 're:Did you know Kei Nishikori is the first Asian man to ever reach a Grand Slam',
  54             'uploader': 'Tennis on Facebook',
  55         }
  56     }, {
  57         'note': 'Video without discernible title',
  58         'url': 'https://www.facebook.com/video.php?v=274175099429670',
  59         'info_dict': {
  60             'id': '274175099429670',
  61             'ext': 'mp4',
  62             'title': 'Facebook video #274175099429670',
  63             'uploader': 'Asif Nawab Butt',
  64         },
  65         'expected_warnings': [
  66             'title'
  67         ]
  68     }, {
  69         'url': 'https://www.facebook.com/video.php?v=10204634152394104',
  70         'only_matching': True,
  71     }, {
  72         'url': 'https://www.facebook.com/amogood/videos/1618742068337349/?fref=nf',
  73         'only_matching': True,
  74     }, {
  75         'url': 'https://www.facebook.com/ChristyClarkForBC/videos/vb.22819070941/10153870694020942/?type=2&theater',
  76         'only_matching': True,
  77     }, {
  78         'url': 'facebook:544765982287235',
  79         'only_matching': True,
  80     }]
  81
  82     def _login(self):
  83         (useremail, password) = self._get_login_info()
  84         if useremail is None:
  85             return
  86
  87         login_page_req = sanitized_Request(self._LOGIN_URL)
  88         self._set_cookie('facebook.com', 'locale', 'en_US')
  89         login_page = self._download_webpage(login_page_req, None,
  90                                             note='Downloading login page',
  91                                             errnote='Unable to download login page')
  92         lsd = self._search_regex(
  93             r'<input type="hidden" name="lsd" value="([^"]*)"',
  94             login_page, 'lsd')
  95         lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')
  96
  97         login_form = {
  98             'email': useremail,
  99             'pass': password,
 100             'lsd': lsd,
 101             'lgnrnd': lgnrnd,
 102             'next': 'http://facebook.com/home.php',
 103             'default_persistent': '0',
 104             'legacy_return': '1',
 105             'timezone': '-60',
 106             'trynum': '1',
 107         }
 108         request = sanitized_Request(self._LOGIN_URL, urlencode_postdata(login_form))
 109         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
 110         try:
 111             login_results = self._download_webpage(request, None,
 112                                                    note='Logging in', errnote='unable to fetch login page')
 113             if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
 114                 error = self._html_search_regex(
 115                     r'(?s)<div[^>]+class=(["\']).*?login_error_box.*?\1[^>]*><div[^>]*>.*?</div><div[^>]*>(?P<error>.+?)</div>',
 116                     login_results, 'login error', default=None, group='error')
 117                 if error:
 118                     raise ExtractorError('Unable to login: %s' % error, expected=True)
 119                 self._downloader.report_warning('unable to log in: bad username/password, or exceeded login rate limit (~3/min). Check credentials or wait.')
 120                 return
 121
 122             fb_dtsg = self._search_regex(
 123                 r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg', default=None)
 124             h = self._search_regex(
 125                 r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h', default=None)
 126
 127             if not fb_dtsg or not h:
 128                 return
 129
 130             check_form = {
 131                 'fb_dtsg': fb_dtsg,
 132                 'h': h,
 133                 'name_action_selected': 'dont_save',
 134             }
 135             check_req = sanitized_Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
 136             check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
 137             check_response = self._download_webpage(check_req, None,
 138                                                     note='Confirming login')
 139             if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
 140                 self._downloader.report_warning('Unable to confirm login, you have to login in your browser and authorize the login.')
 141         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 142             self._downloader.report_warning('unable to log in: %s' % error_to_compat_str(err))
 143             return
 144
 145     def _real_initialize(self):
 146         self._login()
 147
 148     def _real_extract(self, url):
 149         video_id = self._match_id(url)
 150         url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
 151         webpage = self._download_webpage(url, video_id)
 152
 153         video_data = None
 154
 155         BEFORE = '{swf.addParam(param[0], param[1]);});\n'
 156         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
 157         m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
 158         if m:
 159             data = dict(json.loads(m.group(1)))
 160             params_raw = compat_urllib_parse_unquote(data['params'])
 161             video_data = json.loads(params_raw)['video_data']
 162
 163         def video_data_list2dict(video_data):
 164             ret = {}
 165             for item in video_data:
 166                 format_id = item['stream_type']
 167                 ret.setdefault(format_id, []).append(item)
 168             return ret
 169
 170         if not video_data:
 171             server_js_data = self._parse_json(self._search_regex(
 172                 r'handleServerJS\(({.+})\);', webpage, 'server js data'), video_id)
 173             for item in server_js_data['instances']:
 174                 if item[1][0] == 'VideoConfig':
 175                     video_data = video_data_list2dict(item[2][0]['videoData'])
 176                     break
 177
 178         if not video_data:
 179             m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
 180             if m_msg is not None:
 181                 raise ExtractorError(
 182                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
 183                     expected=True)
 184             else:
 185                 raise ExtractorError('Cannot parse data')
 186
 187         formats = []
 188         for format_id, f in video_data.items():
 189             if not f or not isinstance(f, list):
 190                 continue
 191             for quality in ('sd', 'hd'):
 192                 for src_type in ('src', 'src_no_ratelimit'):
 193                     src = f[0].get('%s_%s' % (quality, src_type))
 194                     if src:
 195                         formats.append({
 196                             'format_id': '%s_%s_%s' % (format_id, quality, src_type),
 197                             'url': src,
 198                             'preference': -10 if format_id == 'progressive' else 0,
 199                         })
 200         if not formats:
 201             raise ExtractorError('Cannot find video formats')
 202
 203         video_title = self._html_search_regex(
 204             r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>', webpage, 'title',
 205             default=None)
 206         if not video_title:
 207             video_title = self._html_search_regex(
 208                 r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
 209                 webpage, 'alternative title', default=None)
 210             video_title = limit_length(video_title, 80)
 211         if not video_title:
 212             video_title = 'Facebook video #%s' % video_id
 213         uploader = clean_html(get_element_by_id('fbPhotoPageAuthorName', webpage))
 214
 215         return {
 216             'id': video_id,
 217             'title': video_title,
 218             'formats': formats,
 219             'uploader': uploader,
 220         }
 221
 222
 223 class FacebookPostIE(InfoExtractor):
 224     IE_NAME = 'facebook:post'
 225     _VALID_URL = r'https?://(?:\w+\.)?facebook\.com/[^/]+/posts/(?P<id>\d+)'
 226     _TEST = {
 227         'url': 'https://www.facebook.com/maxlayn/posts/10153807558977570',
 228         'md5': '037b1fa7f3c2d02b7a0d7bc16031ecc6',
 229         'info_dict': {
 230             'id': '544765982287235',
 231             'ext': 'mp4',
 232             'title': '"What are you doing running in the snow?"',
 233             'uploader': 'FailArmy',
 234         }
 235     }
 236
 237     def _real_extract(self, url):
 238         post_id = self._match_id(url)
 239
 240         webpage = self._download_webpage(url, post_id)
 241
 242         entries = [
 243             self.url_result('facebook:%s' % video_id, FacebookIE.ie_key())
 244             for video_id in self._parse_json(
 245                 self._search_regex(
 246                     r'(["\'])video_ids\1\s*:\s*(?P<ids>\[.+?\])',
 247                     webpage, 'video ids', group='ids'),
 248                 post_id)]
 249
 250         return self.playlist_result(entries, post_id)