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[youtube-dl] / 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_str,
11     compat_urllib_error,
12     compat_urllib_parse,
13     compat_urllib_request,
14 )
15 from ..utils import (
16     ExtractorError,
17     int_or_none,
18     limit_length,
19     urlencode_postdata,
20 )
21
22
23 class FacebookIE(InfoExtractor):
24     _VALID_URL = r'''(?x)
25         https?://(?:\w+\.)?facebook\.com/
26         (?:[^#]*?\#!/)?
27         (?:
28             (?:video/video\.php|photo\.php|video\.php|video/embed)\?(?:.*?)
29             (?:v|video_id)=|
30             [^/]+/videos/(?:[^/]+/)?
31         )
32         (?P<id>[0-9]+)
33         (?:.*)'''
34     _LOGIN_URL = 'https://www.facebook.com/login.php?next=http%3A%2F%2Ffacebook.com%2Fhome.php&login_attempt=1'
35     _CHECKPOINT_URL = 'https://www.facebook.com/checkpoint/?next=http%3A%2F%2Ffacebook.com%2Fhome.php&_fb_noscript=1'
36     _NETRC_MACHINE = 'facebook'
37     IE_NAME = 'facebook'
38     _TESTS = [{
39         'url': 'https://www.facebook.com/video.php?v=637842556329505&fref=nf',
40         'md5': '6a40d33c0eccbb1af76cf0485a052659',
41         'info_dict': {
42             'id': '637842556329505',
43             'ext': 'mp4',
44             'title': 're:Did you know Kei Nishikori is the first Asian man to ever reach a Grand Slam',
45         }
46     }, {
47         'note': 'Video without discernible title',
48         'url': 'https://www.facebook.com/video.php?v=274175099429670',
49         'info_dict': {
50             'id': '274175099429670',
51             'ext': 'mp4',
52             'title': 'Facebook video #274175099429670',
53         }
54     }, {
55         'url': 'https://www.facebook.com/video.php?v=10204634152394104',
56         'only_matching': True,
57     }, {
58         'url': 'https://www.facebook.com/amogood/videos/1618742068337349/?fref=nf',
59         'only_matching': True,
60     }, {
61         'url': 'https://www.facebook.com/ChristyClarkForBC/videos/vb.22819070941/10153870694020942/?type=2&theater',
62         'only_matching': True,
63     }]
64
65     def _login(self):
66         (useremail, password) = self._get_login_info()
67         if useremail is None:
68             return
69
70         login_page_req = compat_urllib_request.Request(self._LOGIN_URL)
71         login_page_req.add_header('Cookie', 'locale=en_US')
72         login_page = self._download_webpage(login_page_req, None,
73                                             note='Downloading login page',
74                                             errnote='Unable to download login page')
75         lsd = self._search_regex(
76             r'<input type="hidden" name="lsd" value="([^"]*)"',
77             login_page, 'lsd')
78         lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')
79
80         login_form = {
81             'email': useremail,
82             'pass': password,
83             'lsd': lsd,
84             'lgnrnd': lgnrnd,
85             'next': 'http://facebook.com/home.php',
86             'default_persistent': '0',
87             'legacy_return': '1',
88             'timezone': '-60',
89             'trynum': '1',
90         }
91         request = compat_urllib_request.Request(self._LOGIN_URL, urlencode_postdata(login_form))
92         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
93         try:
94             login_results = self._download_webpage(request, None,
95                                                    note='Logging in', errnote='unable to fetch login page')
96             if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
97                 self._downloader.report_warning('unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
98                 return
99
100             check_form = {
101                 'fb_dtsg': self._search_regex(r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg'),
102                 'h': self._search_regex(
103                     r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h'),
104                 'name_action_selected': 'dont_save',
105             }
106             check_req = compat_urllib_request.Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
107             check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
108             check_response = self._download_webpage(check_req, None,
109                                                     note='Confirming login')
110             if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
111                 self._downloader.report_warning('Unable to confirm login, you have to login in your brower and authorize the login.')
112         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
113             self._downloader.report_warning('unable to log in: %s' % compat_str(err))
114             return
115
116     def _real_initialize(self):
117         self._login()
118
119     def _real_extract(self, url):
120         video_id = self._match_id(url)
121         url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
122         webpage = self._download_webpage(url, video_id)
123
124         BEFORE = '{swf.addParam(param[0], param[1]);});\n'
125         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
126         m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
127         if not m:
128             m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
129             if m_msg is not None:
130                 raise ExtractorError(
131                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
132                     expected=True)
133             else:
134                 raise ExtractorError('Cannot parse data')
135         data = dict(json.loads(m.group(1)))
136         params_raw = compat_urllib_parse.unquote(data['params'])
137         params = json.loads(params_raw)
138         video_data = params['video_data'][0]
139
140         formats = []
141         for quality in ['sd', 'hd']:
142             src = video_data.get('%s_src' % quality)
143             if src is not None:
144                 formats.append({
145                     'format_id': quality,
146                     'url': src,
147                 })
148         if not formats:
149             raise ExtractorError('Cannot find video formats')
150
151         video_title = self._html_search_regex(
152             r'<h2 class="uiHeaderTitle">([^<]*)</h2>', webpage, 'title',
153             fatal=False)
154         if not video_title:
155             video_title = self._html_search_regex(
156                 r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
157                 webpage, 'alternative title', default=None)
158             video_title = limit_length(video_title, 80)
159         if not video_title:
160             video_title = 'Facebook video #%s' % video_id
161
162         return {
163             'id': video_id,
164             'title': video_title,
165             'formats': formats,
166             'duration': int_or_none(video_data.get('video_duration')),
167             'thumbnail': video_data.get('thumbnail_src'),
168         }