275 lines
11 KiB
Python
275 lines
11 KiB
Python
from __future__ import unicode_literals
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from .common import InfoExtractor
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from ..compat import (
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compat_HTTPError,
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compat_urllib_parse,
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compat_urllib_request,
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)
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from ..utils import (
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ExtractorError,
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float_or_none,
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int_or_none,
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sanitized_Request,
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unescapeHTML,
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)
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class UdemyIE(InfoExtractor):
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IE_NAME = 'udemy'
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_VALID_URL = r'https?://www\.udemy\.com/(?:[^#]+#/lecture/|lecture/view/?\?lectureId=)(?P<id>\d+)'
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_LOGIN_URL = 'https://www.udemy.com/join/login-popup/?displayType=ajax&showSkipButton=1'
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_ORIGIN_URL = 'https://www.udemy.com'
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_NETRC_MACHINE = 'udemy'
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_TESTS = [{
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'url': 'https://www.udemy.com/java-tutorial/#/lecture/172757',
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'md5': '98eda5b657e752cf945d8445e261b5c5',
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'info_dict': {
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'id': '160614',
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'ext': 'mp4',
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'title': 'Introduction and Installation',
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'description': 'md5:c0d51f6f21ef4ec65f091055a5eef876',
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'duration': 579.29,
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},
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'skip': 'Requires udemy account credentials',
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}]
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def _enroll_course(self, webpage, course_id):
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checkout_url = unescapeHTML(self._search_regex(
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r'href=(["\'])(?P<url>https?://(?:www\.)?udemy\.com/payment/checkout/.+?)\1',
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webpage, 'checkout url', group='url', default=None))
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if checkout_url:
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raise ExtractorError(
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'Course %s is not free. You have to pay for it before you can download. '
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'Use this URL to confirm purchase: %s' % (course_id, checkout_url), expected=True)
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enroll_url = unescapeHTML(self._search_regex(
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r'href=(["\'])(?P<url>https?://(?:www\.)?udemy\.com/course/subscribe/.+?)\1',
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webpage, 'enroll url', group='url', default=None))
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if enroll_url:
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webpage = self._download_webpage(enroll_url, course_id, 'Enrolling in the course')
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if '>You have enrolled in' in webpage:
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self.to_screen('%s: Successfully enrolled in the course' % course_id)
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def _download_lecture(self, course_id, lecture_id):
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return self._download_json(
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'https://www.udemy.com/api-2.0/users/me/subscribed-courses/%s/lectures/%s?%s' % (
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course_id, lecture_id, compat_urllib_parse.urlencode({
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'video_only': '',
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'auto_play': '',
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'fields[lecture]': 'title,description,asset',
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'fields[asset]': 'asset_type,stream_url,thumbnail_url,download_urls,data',
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'instructorPreviewMode': 'False',
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})),
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lecture_id, 'Downloading lecture JSON')
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def _handle_error(self, response):
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if not isinstance(response, dict):
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return
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error = response.get('error')
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if error:
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error_str = 'Udemy returned error #%s: %s' % (error.get('code'), error.get('message'))
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error_data = error.get('data')
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if error_data:
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error_str += ' - %s' % error_data.get('formErrors')
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raise ExtractorError(error_str, expected=True)
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def _download_json(self, url_or_request, video_id, note='Downloading JSON metadata'):
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headers = {
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'X-Udemy-Snail-Case': 'true',
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'X-Requested-With': 'XMLHttpRequest',
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}
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for cookie in self._downloader.cookiejar:
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if cookie.name == 'client_id':
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headers['X-Udemy-Client-Id'] = cookie.value
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elif cookie.name == 'access_token':
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headers['X-Udemy-Bearer-Token'] = cookie.value
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headers['X-Udemy-Authorization'] = 'Bearer %s' % cookie.value
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if isinstance(url_or_request, compat_urllib_request.Request):
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for header, value in headers.items():
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url_or_request.add_header(header, value)
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else:
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url_or_request = sanitized_Request(url_or_request, headers=headers)
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response = super(UdemyIE, self)._download_json(url_or_request, video_id, note)
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self._handle_error(response)
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return response
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def _real_initialize(self):
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self._login()
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def _login(self):
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(username, password) = self._get_login_info()
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if username is None:
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return
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login_popup = self._download_webpage(
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self._LOGIN_URL, None, 'Downloading login popup')
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def is_logged(webpage):
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return any(p in webpage for p in ['href="https://www.udemy.com/user/logout/', '>Logout<'])
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# already logged in
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if is_logged(login_popup):
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return
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login_form = self._form_hidden_inputs('login-form', login_popup)
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login_form.update({
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'email': username.encode('utf-8'),
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'password': password.encode('utf-8'),
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})
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request = sanitized_Request(
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self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
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request.add_header('Referer', self._ORIGIN_URL)
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request.add_header('Origin', self._ORIGIN_URL)
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response = self._download_webpage(
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request, None, 'Logging in as %s' % username)
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if not is_logged(response):
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error = self._html_search_regex(
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r'(?s)<div[^>]+class="form-errors[^"]*">(.+?)</div>',
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response, 'error message', default=None)
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if error:
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raise ExtractorError('Unable to login: %s' % error, expected=True)
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raise ExtractorError('Unable to log in')
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def _real_extract(self, url):
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lecture_id = self._match_id(url)
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webpage = self._download_webpage(url, lecture_id)
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course_id = self._search_regex(
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(r'data-course-id=["\'](\d+)', r'"id"\s*:\s*(\d+)'),
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webpage, 'course id')
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try:
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lecture = self._download_lecture(course_id, lecture_id)
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except ExtractorError as e:
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# Error could possibly mean we are not enrolled in the course
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if isinstance(e.cause, compat_HTTPError) and e.cause.code == 403:
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self._enroll_course(webpage, course_id)
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lecture = self._download_lecture(course_id, lecture_id)
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else:
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raise
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title = lecture['title']
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description = lecture.get('description')
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asset = lecture['asset']
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asset_type = asset.get('assetType') or asset.get('asset_type')
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if asset_type != 'Video':
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raise ExtractorError(
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'Lecture %s is not a video' % lecture_id, expected=True)
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stream_url = asset.get('streamUrl') or asset.get('stream_url')
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if stream_url:
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youtube_url = self._search_regex(
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r'(https?://www\.youtube\.com/watch\?v=.*)', stream_url, 'youtube URL', default=None)
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if youtube_url:
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return self.url_result(youtube_url, 'Youtube')
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video_id = asset['id']
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thumbnail = asset.get('thumbnailUrl') or asset.get('thumbnail_url')
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duration = float_or_none(asset.get('data', {}).get('duration'))
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outputs = asset.get('data', {}).get('outputs', {})
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formats = []
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for format_ in asset.get('download_urls', {}).get('Video', []):
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video_url = format_.get('file')
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if not video_url:
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continue
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format_id = format_.get('label')
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f = {
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'url': format_['file'],
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'height': int_or_none(format_id),
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}
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if format_id:
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# Some videos contain additional metadata (e.g.
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# https://www.udemy.com/ios9-swift/learn/#/lecture/3383208)
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output = outputs.get(format_id)
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if isinstance(output, dict):
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f.update({
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'format_id': '%sp' % (output.get('label') or format_id),
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'width': int_or_none(output.get('width')),
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'height': int_or_none(output.get('height')),
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'vbr': int_or_none(output.get('video_bitrate_in_kbps')),
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'vcodec': output.get('video_codec'),
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'fps': int_or_none(output.get('frame_rate')),
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'abr': int_or_none(output.get('audio_bitrate_in_kbps')),
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'acodec': output.get('audio_codec'),
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'asr': int_or_none(output.get('audio_sample_rate')),
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'tbr': int_or_none(output.get('total_bitrate_in_kbps')),
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'filesize': int_or_none(output.get('file_size_in_bytes')),
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})
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else:
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f['format_id'] = '%sp' % format_id
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formats.append(f)
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self._sort_formats(formats)
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return {
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'id': video_id,
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'title': title,
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'description': description,
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'thumbnail': thumbnail,
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'duration': duration,
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'formats': formats
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}
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class UdemyCourseIE(UdemyIE):
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IE_NAME = 'udemy:course'
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_VALID_URL = r'https?://www\.udemy\.com/(?P<id>[\da-z-]+)'
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_TESTS = []
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@classmethod
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def suitable(cls, url):
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return False if UdemyIE.suitable(url) else super(UdemyCourseIE, cls).suitable(url)
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def _real_extract(self, url):
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course_path = self._match_id(url)
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webpage = self._download_webpage(url, course_path)
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response = self._download_json(
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'https://www.udemy.com/api-1.1/courses/%s' % course_path,
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course_path, 'Downloading course JSON')
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course_id = response['id']
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course_title = response.get('title')
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self._enroll_course(webpage, course_id)
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response = self._download_json(
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'https://www.udemy.com/api-1.1/courses/%s/curriculum' % course_id,
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course_id, 'Downloading course curriculum')
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entries = []
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chapter, chapter_number = None, None
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for asset in response:
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asset_type = asset.get('assetType') or asset.get('asset_type')
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if asset_type == 'Video':
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asset_id = asset.get('id')
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if asset_id:
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entry = {
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'_type': 'url_transparent',
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'url': 'https://www.udemy.com/%s/#/lecture/%s' % (course_path, asset['id']),
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'ie_key': UdemyIE.ie_key(),
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}
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if chapter_number:
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entry['chapter_number'] = chapter_number
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if chapter:
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entry['chapter'] = chapter
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entries.append(entry)
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elif asset.get('type') == 'chapter':
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chapter_number = asset.get('index') or asset.get('object_index')
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chapter = asset.get('title')
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return self.playlist_result(entries, course_id, course_title)
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