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         BEFORE = '{swf.addParam(param[0], param[1]);});\n'
 154         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
 155         m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
 156         if not m:
 157             m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
 158             if m_msg is not None:
 159                 raise ExtractorError(
 160                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
 161                     expected=True)
 162             else:
 163                 raise ExtractorError('Cannot parse data')
 164         data = dict(json.loads(m.group(1)))
 165         params_raw = compat_urllib_parse_unquote(data['params'])
 166         params = json.loads(params_raw)
 167
 168         formats = []
 169         for format_id, f in params['video_data'].items():
 170             if not f or not isinstance(f, list):
 171                 continue
 172             for quality in ('sd', 'hd'):
 173                 for src_type in ('src', 'src_no_ratelimit'):
 174                     src = f[0].get('%s_%s' % (quality, src_type))
 175                     if src:
 176                         formats.append({
 177                             'format_id': '%s_%s_%s' % (format_id, quality, src_type),
 178                             'url': src,
 179                             'preference': -10 if format_id == 'progressive' else 0,
 180                         })
 181         if not formats:
 182             raise ExtractorError('Cannot find video formats')
 183
 184         video_title = self._html_search_regex(
 185             r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>', webpage, 'title',
 186             default=None)
 187         if not video_title:
 188             video_title = self._html_search_regex(
 189                 r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
 190                 webpage, 'alternative title', default=None)
 191             video_title = limit_length(video_title, 80)
 192         if not video_title:
 193             video_title = 'Facebook video #%s' % video_id
 194         uploader = clean_html(get_element_by_id('fbPhotoPageAuthorName', webpage))
 195
 196         return {
 197             'id': video_id,
 198             'title': video_title,
 199             'formats': formats,
 200             'uploader': uploader,
 201         }