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[youtubedl] / 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)