_ Git - youtube-dl/blob - youtube_dl/extractor/safari.py

   1 # encoding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import re
   5
   6 from .common import InfoExtractor
   7
   8 from ..utils import (
   9     ExtractorError,
  10     sanitized_Request,
  11     std_headers,
  12     urlencode_postdata,
  13     update_url_query,
  14 )
  15
  16
  17 class SafariBaseIE(InfoExtractor):
  18     _LOGIN_URL = 'https://www.safaribooksonline.com/accounts/login/'
  19     _SUCCESSFUL_LOGIN_REGEX = r'<a href="/accounts/logout/"[^>]*>Sign Out</a>'
  20     _NETRC_MACHINE = 'safari'
  21
  22     _API_BASE = 'https://www.safaribooksonline.com/api/v1'
  23     _API_FORMAT = 'json'
  24
  25     LOGGED_IN = False
  26
  27     def _real_initialize(self):
  28         self._login()
  29
  30     def _login(self):
  31         # We only need to log in once for courses or individual videos
  32         if self.LOGGED_IN:
  33             return
  34
  35         (username, password) = self._get_login_info()
  36         if username is None:
  37             return
  38
  39         headers = std_headers.copy()
  40         if 'Referer' not in headers:
  41             headers['Referer'] = self._LOGIN_URL
  42         login_page_request = sanitized_Request(self._LOGIN_URL, headers=headers)
  43
  44         login_page = self._download_webpage(
  45             login_page_request, None,
  46             'Downloading login form')
  47
  48         csrf = self._html_search_regex(
  49             r"name='csrfmiddlewaretoken'\s+value='([^']+)'",
  50             login_page, 'csrf token')
  51
  52         login_form = {
  53             'csrfmiddlewaretoken': csrf,
  54             'email': username,
  55             'password1': password,
  56             'login': 'Sign In',
  57             'next': '',
  58         }
  59
  60         request = sanitized_Request(
  61             self._LOGIN_URL, urlencode_postdata(login_form), headers=headers)
  62         login_page = self._download_webpage(
  63             request, None, 'Logging in as %s' % username)
  64
  65         if re.search(self._SUCCESSFUL_LOGIN_REGEX, login_page) is None:
  66             raise ExtractorError(
  67                 'Login failed; make sure your credentials are correct and try again.',
  68                 expected=True)
  69
  70         SafariBaseIE.LOGGED_IN = True
  71
  72         self.to_screen('Login successful')
  73
  74
  75 class SafariIE(SafariBaseIE):
  76     IE_NAME = 'safari'
  77     IE_DESC = 'safaribooksonline.com online video'
  78     _VALID_URL = r'''(?x)https?://
  79                             (?:www\.)?safaribooksonline\.com/
  80                                 (?:
  81                                     library/view/[^/]+|
  82                                     api/v1/book
  83                                 )/
  84                                 (?P<course_id>[^/]+)/
  85                                     (?:chapter(?:-content)?/)?
  86                                 (?P<part>part\d+)\.html
  87     '''
  88
  89     _TESTS = [{
  90         'url': 'https://www.safaribooksonline.com/library/view/hadoop-fundamentals-livelessons/9780133392838/part00.html',
  91         'md5': 'dcc5a425e79f2564148652616af1f2a3',
  92         'info_dict': {
  93             'id': '0_qbqx90ic',
  94             'ext': 'mp4',
  95             'title': 'Introduction to Hadoop Fundamentals LiveLessons',
  96             'timestamp': 1437758058,
  97             'upload_date': '20150724',
  98             'uploader_id': 'stork',
  99         },
 100     }, {
 101         'url': 'https://www.safaribooksonline.com/api/v1/book/9780133392838/chapter/part00.html',
 102         'only_matching': True,
 103     }, {
 104         # non-digits in course id
 105         'url': 'https://www.safaribooksonline.com/library/view/create-a-nodejs/100000006A0210/part00.html',
 106         'only_matching': True,
 107     }]
 108
 109     def _real_extract(self, url):
 110         mobj = re.match(self._VALID_URL, url)
 111         course_id = mobj.group('course_id')
 112         part = mobj.group('part')
 113
 114         webpage = self._download_webpage(url, '%s/%s' % (course_id, part))
 115         reference_id = self._search_regex(r'data-reference-id="([^"]+)"', webpage, 'kaltura reference id')
 116         partner_id = self._search_regex(r'data-partner-id="([^"]+)"', webpage, 'kaltura widget id')
 117         ui_id = self._search_regex(r'data-ui-id="([^"]+)"', webpage, 'kaltura uiconf id')
 118
 119         query = {
 120             'wid': '_%s' % partner_id,
 121             'uiconf_id': ui_id,
 122             'flashvars[referenceId]': reference_id,
 123         }
 124
 125         if self.LOGGED_IN:
 126             kaltura_session = self._download_json(
 127                 '%s/player/kaltura_session/?reference_id=%s' % (self._API_BASE, reference_id),
 128                 course_id, 'Downloading kaltura session JSON',
 129                 'Unable to download kaltura session JSON', fatal=False)
 130             if kaltura_session:
 131                 session = kaltura_session.get('session')
 132                 if session:
 133                     query['flashvars[ks]'] = session
 134
 135         return self.url_result(update_url_query(
 136             'https://cdnapisec.kaltura.com/html5/html5lib/v2.37.1/mwEmbedFrame.php', query),
 137             'Kaltura')
 138
 139
 140 class SafariCourseIE(SafariBaseIE):
 141     IE_NAME = 'safari:course'
 142     IE_DESC = 'safaribooksonline.com online courses'
 143
 144     _VALID_URL = r'https?://(?:www\.)?safaribooksonline\.com/(?:library/view/[^/]+|api/v1/book)/(?P<id>[^/]+)/?(?:[#?]|$)'
 145
 146     _TESTS = [{
 147         'url': 'https://www.safaribooksonline.com/library/view/hadoop-fundamentals-livelessons/9780133392838/',
 148         'info_dict': {
 149             'id': '9780133392838',
 150             'title': 'Hadoop Fundamentals LiveLessons',
 151         },
 152         'playlist_count': 22,
 153         'skip': 'Requires safaribooksonline account credentials',
 154     }, {
 155         'url': 'https://www.safaribooksonline.com/api/v1/book/9781449396459/?override_format=json',
 156         'only_matching': True,
 157     }]
 158
 159     def _real_extract(self, url):
 160         course_id = self._match_id(url)
 161
 162         course_json = self._download_json(
 163             '%s/book/%s/?override_format=%s' % (self._API_BASE, course_id, self._API_FORMAT),
 164             course_id, 'Downloading course JSON')
 165
 166         if 'chapters' not in course_json:
 167             raise ExtractorError(
 168                 'No chapters found for course %s' % course_id, expected=True)
 169
 170         entries = [
 171             self.url_result(chapter, 'Safari')
 172             for chapter in course_json['chapters']]
 173
 174         course_title = course_json['title']
 175
 176         return self.playlist_result(entries, course_id, course_title)