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

   1 from __future__ import unicode_literals
   2
   3 import re
   4
   5 from .common import InfoExtractor
   6 from ..compat import (
   7     compat_urllib_parse,
   8     compat_urllib_request,
   9 )
  10 from ..utils import (
  11     ExtractorError,
  12 )
  13
  14
  15 class UdemyIE(InfoExtractor):
  16     IE_NAME = 'udemy'
  17     _VALID_URL = r'https?://www\.udemy\.com/(?:[^#]+#/lecture/|lecture/view/?\?lectureId=)(?P<id>\d+)'
  18     _LOGIN_URL = 'https://www.udemy.com/join/login-submit/'
  19     _NETRC_MACHINE = 'udemy'
  20
  21     _TESTS = [{
  22         'url': 'https://www.udemy.com/java-tutorial/#/lecture/172757',
  23         'md5': '98eda5b657e752cf945d8445e261b5c5',
  24         'info_dict': {
  25             'id': '160614',
  26             'ext': 'mp4',
  27             'title': 'Introduction and Installation',
  28             'description': 'md5:c0d51f6f21ef4ec65f091055a5eef876',
  29             'duration': 579.29,
  30         },
  31         'skip': 'Requires udemy account credentials',
  32     }]
  33
  34     def _handle_error(self, response):
  35         if not isinstance(response, dict):
  36             return
  37         error = response.get('error')
  38         if error:
  39             error_str = 'Udemy returned error #%s: %s' % (error.get('code'), error.get('message'))
  40             error_data = error.get('data')
  41             if error_data:
  42                 error_str += ' - %s' % error_data.get('formErrors')
  43             raise ExtractorError(error_str, expected=True)
  44
  45     def _download_json(self, url_or_request, video_id, note='Downloading JSON metadata'):
  46         headers = {
  47             'X-Udemy-Snail-Case': 'true',
  48             'X-Requested-With': 'XMLHttpRequest',
  49         }
  50         for cookie in self._downloader.cookiejar:
  51             if cookie.name == 'client_id':
  52                 headers['X-Udemy-Client-Id'] = cookie.value
  53             elif cookie.name == 'access_token':
  54                 headers['X-Udemy-Bearer-Token'] = cookie.value
  55
  56         if isinstance(url_or_request, compat_urllib_request.Request):
  57             for header, value in headers.items():
  58                 url_or_request.add_header(header, value)
  59         else:
  60             url_or_request = compat_urllib_request.Request(url_or_request, headers=headers)
  61
  62         response = super(UdemyIE, self)._download_json(url_or_request, video_id, note)
  63         self._handle_error(response)
  64         return response
  65
  66     def _real_initialize(self):
  67         self._login()
  68
  69     def _login(self):
  70         (username, password) = self._get_login_info()
  71         if username is None:
  72             raise ExtractorError(
  73                 'Udemy account is required, use --username and --password options to provide account credentials.',
  74                 expected=True)
  75
  76         login_popup = self._download_webpage(
  77             'https://www.udemy.com/join/login-popup?displayType=ajax&showSkipButton=1', None,
  78             'Downloading login popup')
  79
  80         if login_popup == '<div class="run-command close-popup redirect" data-url="https://www.udemy.com/"></div>':
  81             return
  82
  83         csrf = self._html_search_regex(
  84             r'<input type="hidden" name="csrf" value="(.+?)"',
  85             login_popup, 'csrf token')
  86
  87         login_form = {
  88             'email': username,
  89             'password': password,
  90             'csrf': csrf,
  91             'displayType': 'json',
  92             'isSubmitted': '1',
  93         }
  94         request = compat_urllib_request.Request(
  95             self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
  96         response = self._download_json(
  97             request, None, 'Logging in as %s' % username)
  98
  99         if 'returnUrl' not in response:
 100             raise ExtractorError('Unable to log in')
 101
 102     def _real_extract(self, url):
 103         lecture_id = self._match_id(url)
 104
 105         lecture = self._download_json(
 106             'https://www.udemy.com/api-1.1/lectures/%s' % lecture_id,
 107             lecture_id, 'Downloading lecture JSON')
 108
 109         asset_type = lecture.get('assetType') or lecture.get('asset_type')
 110         if asset_type != 'Video':
 111             raise ExtractorError(
 112                 'Lecture %s is not a video' % lecture_id, expected=True)
 113
 114         asset = lecture['asset']
 115
 116         stream_url = asset.get('streamUrl') or asset.get('stream_url')
 117         mobj = re.search(r'(https?://www\.youtube\.com/watch\?v=.*)', stream_url)
 118         if mobj:
 119             return self.url_result(mobj.group(1), 'Youtube')
 120
 121         video_id = asset['id']
 122         thumbnail = asset.get('thumbnailUrl') or asset.get('thumbnail_url')
 123         duration = asset['data']['duration']
 124
 125         download_url = asset.get('downloadUrl') or asset.get('download_url')
 126
 127         video = download_url.get('Video') or download_url.get('video')
 128         video_480p = download_url.get('Video480p') or download_url.get('video_480p')
 129
 130         formats = [
 131             {
 132                 'url': video_480p[0],
 133                 'format_id': '360p',
 134             },
 135             {
 136                 'url': video[0],
 137                 'format_id': '720p',
 138             },
 139         ]
 140
 141         title = lecture['title']
 142         description = lecture['description']
 143
 144         return {
 145             'id': video_id,
 146             'title': title,
 147             'description': description,
 148             'thumbnail': thumbnail,
 149             'duration': duration,
 150             'formats': formats
 151         }
 152
 153
 154 class UdemyCourseIE(UdemyIE):
 155     IE_NAME = 'udemy:course'
 156     _VALID_URL = r'https?://www\.udemy\.com/(?P<coursepath>[\da-z-]+)'
 157     _SUCCESSFULLY_ENROLLED = '>You have enrolled in this course!<'
 158     _ALREADY_ENROLLED = '>You are already taking this course.<'
 159     _TESTS = []
 160
 161     @classmethod
 162     def suitable(cls, url):
 163         return False if UdemyIE.suitable(url) else super(UdemyCourseIE, cls).suitable(url)
 164
 165     def _real_extract(self, url):
 166         mobj = re.match(self._VALID_URL, url)
 167         course_path = mobj.group('coursepath')
 168
 169         response = self._download_json(
 170             'https://www.udemy.com/api-1.1/courses/%s' % course_path,
 171             course_path, 'Downloading course JSON')
 172
 173         course_id = int(response['id'])
 174         course_title = response['title']
 175
 176         webpage = self._download_webpage(
 177             'https://www.udemy.com/course/subscribe/?courseId=%s' % course_id,
 178             course_id, 'Enrolling in the course')
 179
 180         if self._SUCCESSFULLY_ENROLLED in webpage:
 181             self.to_screen('%s: Successfully enrolled in' % course_id)
 182         elif self._ALREADY_ENROLLED in webpage:
 183             self.to_screen('%s: Already enrolled in' % course_id)
 184
 185         response = self._download_json(
 186             'https://www.udemy.com/api-1.1/courses/%s/curriculum' % course_id,
 187             course_id, 'Downloading course curriculum')
 188
 189         entries = [
 190             self.url_result(
 191                 'https://www.udemy.com/%s/#/lecture/%s' % (course_path, asset['id']), 'Udemy')
 192             for asset in response if asset.get('assetType') or asset.get('asset_type') == 'Video'
 193         ]
 194
 195         return self.playlist_result(entries, course_id, course_title)