aboutsummaryrefslogtreecommitdiff
path: root/youtube_dl/extractor/facebook.py
blob: d675a939dda29f9faa620dea10641415553da1cf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
from __future__ import unicode_literals

import json
import re
import socket

from .common import InfoExtractor
from ..utils import (
    compat_http_client,
    compat_str,
    compat_urllib_error,
    compat_urllib_parse,
    compat_urllib_request,
    urlencode_postdata,

    ExtractorError,
)


class FacebookIE(InfoExtractor):
    _VALID_URL = r'''(?x)
        https?://(?:\w+\.)?facebook\.com/
        (?:[^#]*?\#!/)?
        (?:video/video\.php|photo\.php|video\.php|video/embed)\?(?:.*?)
        (?:v|video_id)=(?P<id>[0-9]+)
        (?:.*)'''
    _LOGIN_URL = 'https://www.facebook.com/login.php?next=http%3A%2F%2Ffacebook.com%2Fhome.php&login_attempt=1'
    _CHECKPOINT_URL = 'https://www.facebook.com/checkpoint/?next=http%3A%2F%2Ffacebook.com%2Fhome.php&_fb_noscript=1'
    _NETRC_MACHINE = 'facebook'
    IE_NAME = 'facebook'
    _TESTS = [{
        'url': 'https://www.facebook.com/video.php?v=637842556329505&fref=nf',
        'md5': '6a40d33c0eccbb1af76cf0485a052659',
        'info_dict': {
            'id': '637842556329505',
            'ext': 'mp4',
            'duration': 38,
            'title': 'Did you know Kei Nishikori is the first Asian man to ever reach a Grand Slam fin...',
        }
    }, {
        'url': 'https://www.facebook.com/video.php?v=10204634152394104',
        'only_matching': True,
    }]

    def _login(self):
        (useremail, password) = self._get_login_info()
        if useremail is None:
            return

        login_page_req = compat_urllib_request.Request(self._LOGIN_URL)
        login_page_req.add_header('Cookie', 'locale=en_US')
        login_page = self._download_webpage(login_page_req, None,
            note='Downloading login page',
            errnote='Unable to download login page')
        lsd = self._search_regex(
            r'<input type="hidden" name="lsd" value="([^"]*)"',
            login_page, 'lsd')
        lgnrnd = self._search_regex(r'name="lgnrnd" value="([^"]*?)"', login_page, 'lgnrnd')

        login_form = {
            'email': useremail,
            'pass': password,
            'lsd': lsd,
            'lgnrnd': lgnrnd,
            'next': 'http://facebook.com/home.php',
            'default_persistent': '0',
            'legacy_return': '1',
            'timezone': '-60',
            'trynum': '1',
            }
        request = compat_urllib_request.Request(self._LOGIN_URL, urlencode_postdata(login_form))
        request.add_header('Content-Type', 'application/x-www-form-urlencoded')
        try:
            login_results = self._download_webpage(request, None,
                note='Logging in', errnote='unable to fetch login page')
            if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
                self._downloader.report_warning('unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
                return

            check_form = {
                'fb_dtsg': self._search_regex(r'name="fb_dtsg" value="(.+?)"', login_results, 'fb_dtsg'),
                'h': self._search_regex(
                    r'name="h"\s+(?:\w+="[^"]+"\s+)*?value="([^"]+)"', login_results, 'h'),
                'name_action_selected': 'dont_save',
            }
            check_req = compat_urllib_request.Request(self._CHECKPOINT_URL, urlencode_postdata(check_form))
            check_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
            check_response = self._download_webpage(check_req, None,
                note='Confirming login')
            if re.search(r'id="checkpointSubmitButton"', check_response) is not None:
                self._downloader.report_warning('Unable to confirm login, you have to login in your brower and authorize the login.')
        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
            self._downloader.report_warning('unable to log in: %s' % compat_str(err))
            return

    def _real_initialize(self):
        self._login()

    def _real_extract(self, url):
        mobj = re.match(self._VALID_URL, url)
        video_id = mobj.group('id')

        url = 'https://www.facebook.com/video/video.php?v=%s' % video_id
        webpage = self._download_webpage(url, video_id)

        BEFORE = '{swf.addParam(param[0], param[1]);});\n'
        AFTER = '.forEach(function(variable) {swf.addVariable(variable[0], variable[1]);});'
        m = re.search(re.escape(BEFORE) + '(.*?)' + re.escape(AFTER), webpage)
        if not m:
            m_msg = re.search(r'class="[^"]*uiInterstitialContent[^"]*"><div>(.*?)</div>', webpage)
            if m_msg is not None:
                raise ExtractorError(
                    'The video is not available, Facebook said: "%s"' % m_msg.group(1),
                    expected=True)
            else:
                raise ExtractorError('Cannot parse data')
        data = dict(json.loads(m.group(1)))
        params_raw = compat_urllib_parse.unquote(data['params'])
        params = json.loads(params_raw)
        video_data = params['video_data'][0]
        video_url = video_data.get('hd_src')
        if not video_url:
            video_url = video_data['sd_src']
        if not video_url:
            raise ExtractorError('Cannot find video URL')

        video_title = self._html_search_regex(
            r'<h2 class="uiHeaderTitle">([^<]*)</h2>', webpage, 'title',
            fatal=False)
        if not video_title:
            video_title = self._html_search_regex(
                r'(?s)<span class="fbPhotosPhotoCaption".*?id="fbPhotoPageCaption"><span class="hasCaption">(.*?)</span>',
                webpage, 'alternative title', default=None)
            if len(video_title) > 80 + 3:
                video_title = video_title[:80] + '...'
        if not video_title:
            video_title = 'Facebook video #%s' % video_id

        return {
            'id': video_id,
            'title': video_title,
            'url': video_url,
            'duration': int(video_data['video_duration']),
            'thumbnail': video_data['thumbnail_src'],
        }