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