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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_http_client,
10     compat_str,
11     compat_urllib_error,
12     compat_urllib_parse_unquote,
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         'expected_warnings': [
55             'title'
56         ]
57     }, {
58         'url': 'https://www.facebook.com/video.php?v=10204634152394104',
59         'only_matching': True,
60     }, {
61         'url': 'https://www.facebook.com/amogood/videos/1618742068337349/?fref=nf',
62         'only_matching': True,
63     }, {
64         'url': 'https://www.facebook.com/ChristyClarkForBC/videos/vb.22819070941/10153870694020942/?type=2&theater',
65         'only_matching': True,
66     }]
67
68     def _login(self):
69         (useremail, password) = self._get_login_info()
70         if useremail is None:
71             return
72
73         login_page_req = compat_urllib_request.Request(self._LOGIN_URL)
74         login_page_req.add_header('Cookie', 'locale=en_US')
75         login_page = self._download_webpage(login_page_req, None,
76                                             note='Downloading login page',
77                                             errnote='Unable to download login page')
78         lsd = self._search_regex(
79             r'<input type="hidden" name="lsd" value="([^"]*)"',
80             login_page, 'lsd')
81         lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')
82
83         login_form = {
84             'email': useremail,
85             'pass': password,
86             'lsd': lsd,
87             'lgnrnd': lgnrnd,
88             'next': 'http://facebook.com/home.php',
89             'default_persistent': '0',
90             'legacy_return': '1',
91             'timezone': '-60',
92             'trynum': '1',
93         }
94         request = compat_urllib_request.Request(self._LOGIN_URL, urlencode_postdata(login_form))
95         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
96         try:
97             login_results = self._download_webpage(request, None,
98                                                    note='Logging in', errnote='unable to fetch login page')
99             if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
100                 self._downloader.report_warning('unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
101                 return
102
103             check_form = {
104                 'fb_dtsg': self._search_regex(r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg'),
105                 'h': self._search_regex(
106                     r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h'),
107                 'name_action_selected': 'dont_save',
108             }
109             check_req = compat_urllib_request.Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
110             check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
111             check_response = self._download_webpage(check_req, None,
112                                                     note='Confirming login')
113             if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
114                 self._downloader.report_warning('Unable to confirm login, you have to login in your brower and authorize the login.')
115         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
116             self._downloader.report_warning('unable to log in: %s' % compat_str(err))
117             return
118
119     def _real_initialize(self):
120         self._login()
121
122     def _real_extract(self, url):
123         video_id = self._match_id(url)
124         url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
125         webpage = self._download_webpage(url, video_id)
126
127         BEFORE = '{swf.addParam(param[0], param[1]);});\n'
128         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
129         m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
130         if not m:
131             m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
132             if m_msg is not None:
133                 raise ExtractorError(
134                     'The video is not available, Facebook said: "%s"' % m_msg.group(1),
135                     expected=True)
136             else:
137                 raise ExtractorError('Cannot parse data')
138         data = dict(json.loads(m.group(1)))
139         params_raw = compat_urllib_parse_unquote(data['params'])
140         params = json.loads(params_raw)
141         video_data = params['video_data'][0]
142
143         formats = []
144         for quality in ['sd', 'hd']:
145             src = video_data.get('%s_src' % quality)
146             if src is not None:
147                 formats.append({
148                     'format_id': quality,
149                     'url': src,
150                 })
151         if not formats:
152             raise ExtractorError('Cannot find video formats')
153
154         video_title = self._html_search_regex(
155             r'<h2\s+[^>]*class="uiHeaderTitle"[^>]*>([^<]*)</h2>', webpage, 'title',
156             default=None)
157         if not video_title:
158             video_title = self._html_search_regex(
159                 r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
160                 webpage, 'alternative title', fatal=False)
161             video_title = limit_length(video_title, 80)
162         if not video_title:
163             video_title = 'Facebook video #%s' % video_id
164
165         return {
166             'id': video_id,
167             'title': video_title,
168             'formats': formats,
169             'duration': int_or_none(video_data.get('video_duration')),
170             'thumbnail': video_data.get('thumbnail_src'),
171         }