commit e5de3f6c89d2432a3afbc6d0545259ad49ee17a9
parent 2a1db721d4e0887f1368703c1f5d0714cc38edcd
Author: Sergey M․ <dstftw@gmail.com>
Date: Fri, 14 Mar 2014 00:36:14 +0700
[udemy] Initial support for free courses (#1617)
Diffstat:
2 files changed, 168 insertions(+), 0 deletions(-)
diff --git a/youtube_dl/extractor/__init__.py b/youtube_dl/extractor/__init__.py
@@ -242,6 +242,10 @@ from .tumblr import TumblrIE
from .tutv import TutvIE
from .tvigle import TvigleIE
from .tvp import TvpIE
+from .udemy import (
+ UdemyIE,
+ UdemyCourseIE
+)
from .unistra import UnistraIE
from .ustream import UstreamIE, UstreamChannelIE
from .vbox7 import Vbox7IE
diff --git a/youtube_dl/extractor/udemy.py b/youtube_dl/extractor/udemy.py
@@ -0,0 +1,163 @@
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+ compat_urllib_parse,
+ compat_urllib_request,
+ ExtractorError,
+)
+
+
+class UdemyIE(InfoExtractor):
+ IE_NAME = 'udemy'
+ _VALID_URL = r'https?://www\.udemy\.com/(?:[^#]+#/lecture/|lecture/view/?\?lectureId=)(?P<id>\d+)'
+ _LOGIN_URL = 'https://www.udemy.com/join/login-submit/'
+ _NETRC_MACHINE = 'udemy'
+
+ _TEST = {
+ 'url': 'https://www.udemy.com/java-tutorial/#/lecture/172757',
+ 'md5': '98eda5b657e752cf945d8445e261b5c5',
+ 'info_dict': {
+ 'id': '160614',
+ 'ext': 'mp4',
+ 'title': 'Introduction and Installation',
+ 'description': 'md5:c0d51f6f21ef4ec65f091055a5eef876',
+ 'duration': 579.29,
+ },
+ 'skip': 'Requires udemy account credentials',
+ }
+
+ def _handle_error(self, response):
+ if not isinstance(response, dict):
+ return
+ error = response.get('error')
+ if error:
+ error_str = 'Udemy returned error #%s: %s' % (error.get('code'), error.get('message'))
+ error_data = error.get('data')
+ if error_data:
+ error_str += ' - %s' % error_data.get('formErrors')
+ raise ExtractorError(error_str, expected=True)
+
+ def _download_json(self, url, video_id, note='Downloading JSON metadata'):
+ response = super(UdemyIE, self)._download_json(url, video_id, note)
+ self._handle_error(response)
+ return response
+
+ def _real_initialize(self):
+ self._login()
+
+ def _login(self):
+ (username, password) = self._get_login_info()
+ if username is None:
+ raise ExtractorError(
+ 'Udemy account is required, use --username and --password options to provide account credentials.',
+ expected=True)
+
+ login_popup = self._download_webpage(
+ 'https://www.udemy.com/join/login-popup?displayType=ajax&showSkipButton=1', None,
+ 'Downloading login popup')
+
+ if login_popup == '<div class="run-command close-popup redirect" data-url="https://www.udemy.com/"></div>':
+ return
+
+ csrf = self._html_search_regex(r'<input type="hidden" name="csrf" value="(.+?)"', login_popup, 'csrf token')
+
+ login_form = {
+ 'email': username,
+ 'password': password,
+ 'csrf': csrf,
+ 'displayType': 'json',
+ 'isSubmitted': '1',
+ }
+ request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(login_form))
+ response = self._download_json(request, None, 'Logging in as %s' % username)
+
+ if 'returnUrl' not in response:
+ raise ExtractorError('Unable to log in')
+
+ def _real_extract(self, url):
+ mobj = re.match(self._VALID_URL, url)
+ lecture_id = mobj.group('id')
+
+ lecture = self._download_json(
+ 'https://www.udemy.com/api-1.1/lectures/%s' % lecture_id, lecture_id, 'Downloading lecture JSON')
+
+ if lecture['assetType'] != 'Video':
+ raise ExtractorError('Lecture %s is not a video' % lecture_id, expected=True)
+
+ asset = lecture['asset']
+
+ stream_url = asset['streamUrl']
+ mobj = re.search(r'(https?://www\.youtube\.com/watch\?v=.*)', stream_url)
+ if mobj:
+ return self.url_result(mobj.group(1), 'Youtube')
+
+ video_id = asset['id']
+ thumbnail = asset['thumbnailUrl']
+ duration = asset['data']['duration']
+
+ download_url = asset['downloadUrl']
+
+ formats = [
+ {
+ 'url': download_url['Video480p'][0],
+ 'format_id': '360p',
+ },
+ {
+ 'url': download_url['Video'][0],
+ 'format_id': '720p',
+ },
+ ]
+
+ title = lecture['title']
+ description = lecture['description']
+
+ return {
+ 'id': video_id,
+ 'title': title,
+ 'description': description,
+ 'thumbnail': thumbnail,
+ 'duration': duration,
+ 'formats': formats
+ }
+
+
+class UdemyCourseIE(UdemyIE):
+ IE_NAME = 'udemy:course'
+ _VALID_URL = r'https?://www\.udemy\.com/(?P<coursepath>[\da-z-]+)'
+ _SUCCESSFULLY_ENROLLED = '>You have enrolled in this course!<'
+ _ALREADY_ENROLLED = '>You are already taking this course.<'
+
+ @classmethod
+ def suitable(cls, url):
+ return False if UdemyIE.suitable(url) else super(UdemyCourseIE, cls).suitable(url)
+
+ def _real_extract(self, url):
+ mobj = re.match(self._VALID_URL, url)
+ course_path = mobj.group('coursepath')
+
+ response = self._download_json(
+ 'https://www.udemy.com/api-1.1/courses/%s' % course_path, course_path, 'Downloading course JSON')
+
+ course_id = int(response['id'])
+ course_title = response['title']
+
+ webpage = self._download_webpage(
+ 'https://www.udemy.com/course/subscribe/?courseId=%s' % course_id, course_id, 'Enrolling in the course')
+
+ if self._SUCCESSFULLY_ENROLLED in webpage:
+ self.to_screen('%s: Successfully enrolled in' % course_id)
+ elif self._ALREADY_ENROLLED in webpage:
+ self.to_screen('%s: Already enrolled in' % course_id)
+
+ response = self._download_json('https://www.udemy.com/api-1.1/courses/%s/curriculum' % course_id,
+ course_id, 'Downloading course curriculum')
+
+ entries = [
+ self.url_result('https://www.udemy.com/%s/#/lecture/%s' % (course_path, asset['id']), 'Udemy')
+ for asset in response if asset.get('assetType') == 'Video'
+ ]
+
+ return self.playlist_result(entries, course_id, course_title)+
\ No newline at end of file
