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[youtube-dl] / facebook.py
1 import json
2 import netrc
3 import re
4 import socket
5
6 from .common import InfoExtractor
7 from ..utils import (
8     compat_http_client,
9     compat_str,
10     compat_urllib_error,
11     compat_urllib_parse,
12     compat_urllib_request,
13
14     ExtractorError,
15 )
16
17
18 class FacebookIE(InfoExtractor):
19     """Information Extractor for Facebook"""
20
21     _VALID_URL = r'^(?:https?://)?(?:\w+\.)?facebook\.com/(?:video/video|photo)\.php\?(?:.*?)v=(?P<ID>\d+)(?:.*)'
22     _LOGIN_URL = 'https://login.facebook.com/login.php?m&next=http%3A%2F%2Fm.facebook.com%2Fhome.php&'
23     _NETRC_MACHINE = 'facebook'
24     IE_NAME = u'facebook'
25     _TEST = {
26         u'url': u'https://www.facebook.com/photo.php?v=120708114770723',
27         u'file': u'120708114770723.mp4',
28         u'md5': u'48975a41ccc4b7a581abd68651c1a5a8',
29         u'info_dict': {
30             u"duration": 279, 
31             u"title": u"PEOPLE ARE AWESOME 2013"
32         }
33     }
34
35     def report_login(self):
36         """Report attempt to log in."""
37         self.to_screen(u'Logging in')
38
39     def _real_initialize(self):
40         if self._downloader is None:
41             return
42
43         useremail = None
44         password = None
45         downloader_params = self._downloader.params
46
47         # Attempt to use provided username and password or .netrc data
48         if downloader_params.get('username', None) is not None:
49             useremail = downloader_params['username']
50             password = downloader_params['password']
51         elif downloader_params.get('usenetrc', False):
52             try:
53                 info = netrc.netrc().authenticators(self._NETRC_MACHINE)
54                 if info is not None:
55                     useremail = info[0]
56                     password = info[2]
57                 else:
58                     raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE)
59             except (IOError, netrc.NetrcParseError) as err:
60                 self._downloader.report_warning(u'parsing .netrc: %s' % compat_str(err))
61                 return
62
63         if useremail is None:
64             return
65
66         # Log in
67         login_form = {
68             'email': useremail,
69             'pass': password,
70             'login': 'Log+In'
71             }
72         request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(login_form))
73         try:
74             self.report_login()
75             login_results = compat_urllib_request.urlopen(request).read()
76             if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
77                 self._downloader.report_warning(u'unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
78                 return
79         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
80             self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
81             return
82
83     def _real_extract(self, url):
84         mobj = re.match(self._VALID_URL, url)
85         if mobj is None:
86             raise ExtractorError(u'Invalid URL: %s' % url)
87         video_id = mobj.group('ID')
88
89         url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
90         webpage = self._download_webpage(url, video_id)
91
92         BEFORE = '{swf.addParam(param[0], param[1]);});\n'
93         AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
94         m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
95         if not m:
96             raise ExtractorError(u'Cannot parse data')
97         data = dict(json.loads(m.group(1)))
98         params_raw = compat_urllib_parse.unquote(data['params'])
99         params = json.loads(params_raw)
100         video_data = params['video_data'][0]
101         video_url = video_data.get('hd_src')
102         if not video_url:
103             video_url = video_data['sd_src']
104         if not video_url:
105             raise ExtractorError(u'Cannot find video URL')
106         video_duration = int(video_data['video_duration'])
107         thumbnail = video_data['thumbnail_src']
108
109         video_title = self._html_search_regex('<h2 class="uiHeaderTitle">([^<]+)</h2>',
110             webpage, u'title')
111
112         info = {
113             'id': video_id,
114             'title': video_title,
115             'url': video_url,
116             'ext': 'mp4',
117             'duration': video_duration,
118             'thumbnail': thumbnail,
119         }
120         return [info]