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youtube-dl

[mirror] Download/Watch videos from video hostersgit clone https://hacktivis.me/git/mirror/youtube-dl.git

udemy.py (19413B)

    

  1. from __future__ import unicode_literals
  3. import re
  5. from .common import InfoExtractor
  6. from ..compat import (
  7.     compat_HTTPError,
  8.     compat_kwargs,
  9.     compat_str,
  10.     compat_urllib_request,
  11.     compat_urlparse,
  12. )
  13. from ..utils import (
  14.     determine_ext,
  15.     extract_attributes,
  16.     ExtractorError,
  17.     float_or_none,
  18.     int_or_none,
  19.     js_to_json,
  20.     sanitized_Request,
  21.     try_get,
  22.     unescapeHTML,
  23.     url_or_none,
  24.     urlencode_postdata,
  25. )
  28. class UdemyIE(InfoExtractor):
  29.     IE_NAME = 'udemy'
  30.     _VALID_URL = r'''(?x)
  31.                     https?://
  32.                         (?:[^/]+\.)?udemy\.com/
  33.                         (?:
  34.                             [^#]+\#/lecture/|
  35.                             lecture/view/?\?lectureId=|
  36.                             [^/]+/learn/v4/t/lecture/
  37.                         )
  38.                         (?P<id>\d+)
  39.                     '''
  40.     _LOGIN_URL = 'https://www.udemy.com/join/login-popup/?displayType=ajax&showSkipButton=1'
  41.     _ORIGIN_URL = 'https://www.udemy.com'
  42.     _NETRC_MACHINE = 'udemy'
  44.     _TESTS = [{
  45.         'url': 'https://www.udemy.com/java-tutorial/#/lecture/172757',
  46.         'md5': '98eda5b657e752cf945d8445e261b5c5',
  47.         'info_dict': {
  48.             'id': '160614',
  49.             'ext': 'mp4',
  50.             'title': 'Introduction and Installation',
  51.             'description': 'md5:c0d51f6f21ef4ec65f091055a5eef876',
  52.             'duration': 579.29,
  53.         },
  54.         'skip': 'Requires udemy account credentials',
  55.     }, {
  56.         # new URL schema
  57.         'url': 'https://www.udemy.com/electric-bass-right-from-the-start/learn/v4/t/lecture/4580906',
  58.         'only_matching': True,
  59.     }, {
  60.         # no url in outputs format entry
  61.         'url': 'https://www.udemy.com/learn-web-development-complete-step-by-step-guide-to-success/learn/v4/t/lecture/4125812',
  62.         'only_matching': True,
  63.     }, {
  64.         # only outputs rendition
  65.         'url': 'https://www.udemy.com/how-you-can-help-your-local-community-5-amazing-examples/learn/v4/t/lecture/3225750?start=0',
  66.         'only_matching': True,
  67.     }, {
  68.         'url': 'https://wipro.udemy.com/java-tutorial/#/lecture/172757',
  69.         'only_matching': True,
  70.     }]
  72.     def _extract_course_info(self, webpage, video_id):
  73.         course = self._parse_json(
  74.             unescapeHTML(self._search_regex(
  75.                 r'ng-init=["\'].*\bcourse=({.+?})[;"\']',
  76.                 webpage, 'course', default='{}')),
  77.             video_id, fatal=False) or {}
  78.         course_id = course.get('id') or self._search_regex(
  79.             [
  80.                 r'data-course-id=["\'](\d+)',
  81.                 r'&quot;courseId&quot;\s*:\s*(\d+)'
  82.             ], webpage, 'course id')
  83.         return course_id, course.get('title')
  85.     def _enroll_course(self, base_url, webpage, course_id):
  86.         def combine_url(base_url, url):
  87.             return compat_urlparse.urljoin(base_url, url) if not url.startswith('http') else url
  89.         checkout_url = unescapeHTML(self._search_regex(
  90.             r'href=(["\'])(?P<url>(?:https?://(?:www\.)?udemy\.com)?/(?:payment|cart)/checkout/.+?)\1',
  91.             webpage, 'checkout url', group='url', default=None))
  92.         if checkout_url:
  93.             raise ExtractorError(
  94.                 'Course %s is not free. You have to pay for it before you can download. '
  95.                 'Use this URL to confirm purchase: %s'
  96.                 % (course_id, combine_url(base_url, checkout_url)),
  97.                 expected=True)
  99.         enroll_url = unescapeHTML(self._search_regex(
  100.             r'href=(["\'])(?P<url>(?:https?://(?:www\.)?udemy\.com)?/course/subscribe/.+?)\1',
  101.             webpage, 'enroll url', group='url', default=None))
  102.         if enroll_url:
  103.             webpage = self._download_webpage(
  104.                 combine_url(base_url, enroll_url),
  105.                 course_id, 'Enrolling in the course',
  106.                 headers={'Referer': base_url})
  107.             if '>You have enrolled in' in webpage:
  108.                 self.to_screen('%s: Successfully enrolled in the course' % course_id)
  110.     def _download_lecture(self, course_id, lecture_id):
  111.         return self._download_json(
  112.             'https://www.udemy.com/api-2.0/users/me/subscribed-courses/%s/lectures/%s?'
  113.             % (course_id, lecture_id),
  114.             lecture_id, 'Downloading lecture JSON', query={
  115.                 'fields[lecture]': 'title,description,view_html,asset',
  116.                 'fields[asset]': 'asset_type,stream_url,thumbnail_url,download_urls,stream_urls,captions,data',
  117.             })
  119.     def _handle_error(self, response):
  120.         if not isinstance(response, dict):
  121.             return
  122.         error = response.get('error')
  123.         if error:
  124.             error_str = 'Udemy returned error #%s: %s' % (error.get('code'), error.get('message'))
  125.             error_data = error.get('data')
  126.             if error_data:
  127.                 error_str += ' - %s' % error_data.get('formErrors')
  128.             raise ExtractorError(error_str, expected=True)
  130.     def _download_webpage_handle(self, *args, **kwargs):
  131.         headers = kwargs.get('headers', {}).copy()
  132.         headers['User-Agent'] = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36'
  133.         kwargs['headers'] = headers
  134.         ret = super(UdemyIE, self)._download_webpage_handle(
  135.             *args, **compat_kwargs(kwargs))
  136.         if not ret:
  137.             return ret
  138.         webpage, _ = ret
  139.         if any(p in webpage for p in (
  140.                 '>Please verify you are a human',
  141.                 'Access to this page has been denied because we believe you are using automation tools to browse the website',
  142.                 '"_pxCaptcha"')):
  143.             raise ExtractorError(
  144.                 'Udemy asks you to solve a CAPTCHA. Login with browser, '
  145.                 'solve CAPTCHA, then export cookies and pass cookie file to '
  146.                 'youtube-dl with --cookies.', expected=True)
  147.         return ret
  149.     def _download_json(self, url_or_request, *args, **kwargs):
  150.         headers = {
  151.             'X-Udemy-Snail-Case': 'true',
  152.             'X-Requested-With': 'XMLHttpRequest',
  153.         }
  154.         for cookie in self._downloader.cookiejar:
  155.             if cookie.name == 'client_id':
  156.                 headers['X-Udemy-Client-Id'] = cookie.value
  157.             elif cookie.name == 'access_token':
  158.                 headers['X-Udemy-Bearer-Token'] = cookie.value
  159.                 headers['X-Udemy-Authorization'] = 'Bearer %s' % cookie.value
  161.         if isinstance(url_or_request, compat_urllib_request.Request):
  162.             for header, value in headers.items():
  163.                 url_or_request.add_header(header, value)
  164.         else:
  165.             url_or_request = sanitized_Request(url_or_request, headers=headers)
  167.         response = super(UdemyIE, self)._download_json(url_or_request, *args, **kwargs)
  168.         self._handle_error(response)
  169.         return response
  171.     def _real_initialize(self):
  172.         self._login()
  174.     def _login(self):
  175.         username, password = self._get_login_info()
  176.         if username is None:
  177.             return
  179.         login_popup = self._download_webpage(
  180.             self._LOGIN_URL, None, 'Downloading login popup')
  182.         def is_logged(webpage):
  183.             return any(re.search(p, webpage) for p in (
  184.                 r'href=["\'](?:https://www\.udemy\.com)?/user/logout/',
  185.                 r'>Logout<'))
  187.         # already logged in
  188.         if is_logged(login_popup):
  189.             return
  191.         login_form = self._form_hidden_inputs('login-form', login_popup)
  193.         login_form.update({
  194.             'email': username,
  195.             'password': password,
  196.         })
  198.         response = self._download_webpage(
  199.             self._LOGIN_URL, None, 'Logging in',
  200.             data=urlencode_postdata(login_form),
  201.             headers={
  202.                 'Referer': self._ORIGIN_URL,
  203.                 'Origin': self._ORIGIN_URL,
  204.             })
  206.         if not is_logged(response):
  207.             error = self._html_search_regex(
  208.                 r'(?s)<div[^>]+class="form-errors[^"]*">(.+?)</div>',
  209.                 response, 'error message', default=None)
  210.             if error:
  211.                 raise ExtractorError('Unable to login: %s' % error, expected=True)
  212.             raise ExtractorError('Unable to log in')
  214.     def _real_extract(self, url):
  215.         lecture_id = self._match_id(url)
  217.         webpage = self._download_webpage(url, lecture_id)
  219.         course_id, _ = self._extract_course_info(webpage, lecture_id)
  221.         try:
  222.             lecture = self._download_lecture(course_id, lecture_id)
  223.         except ExtractorError as e:
  224.             # Error could possibly mean we are not enrolled in the course
  225.             if isinstance(e.cause, compat_HTTPError) and e.cause.code == 403:
  226.                 self._enroll_course(url, webpage, course_id)
  227.                 lecture = self._download_lecture(course_id, lecture_id)
  228.             else:
  229.                 raise
  231.         title = lecture['title']
  232.         description = lecture.get('description')
  234.         asset = lecture['asset']
  236.         asset_type = asset.get('asset_type') or asset.get('assetType')
  237.         if asset_type != 'Video':
  238.             raise ExtractorError(
  239.                 'Lecture %s is not a video' % lecture_id, expected=True)
  241.         stream_url = asset.get('stream_url') or asset.get('streamUrl')
  242.         if stream_url:
  243.             youtube_url = self._search_regex(
  244.                 r'(https?://www\.youtube\.com/watch\?v=.*)', stream_url, 'youtube URL', default=None)
  245.             if youtube_url:
  246.                 return self.url_result(youtube_url, 'Youtube')
  248.         video_id = compat_str(asset['id'])
  249.         thumbnail = asset.get('thumbnail_url') or asset.get('thumbnailUrl')
  250.         duration = float_or_none(asset.get('data', {}).get('duration'))
  252.         subtitles = {}
  253.         automatic_captions = {}
  255.         formats = []
  257.         def extract_output_format(src, f_id):
  258.             return {
  259.                 'url': src.get('url'),
  260.                 'format_id': '%sp' % (src.get('height') or f_id),
  261.                 'width': int_or_none(src.get('width')),
  262.                 'height': int_or_none(src.get('height')),
  263.                 'vbr': int_or_none(src.get('video_bitrate_in_kbps')),
  264.                 'vcodec': src.get('video_codec'),
  265.                 'fps': int_or_none(src.get('frame_rate')),
  266.                 'abr': int_or_none(src.get('audio_bitrate_in_kbps')),
  267.                 'acodec': src.get('audio_codec'),
  268.                 'asr': int_or_none(src.get('audio_sample_rate')),
  269.                 'tbr': int_or_none(src.get('total_bitrate_in_kbps')),
  270.                 'filesize': int_or_none(src.get('file_size_in_bytes')),
  271.             }
  273.         outputs = asset.get('data', {}).get('outputs')
  274.         if not isinstance(outputs, dict):
  275.             outputs = {}
  277.         def add_output_format_meta(f, key):
  278.             output = outputs.get(key)
  279.             if isinstance(output, dict):
  280.                 output_format = extract_output_format(output, key)
  281.                 output_format.update(f)
  282.                 return output_format
  283.             return f
  285.         def extract_formats(source_list):
  286.             if not isinstance(source_list, list):
  287.                 return
  288.             for source in source_list:
  289.                 video_url = url_or_none(source.get('file') or source.get('src'))
  290.                 if not video_url:
  291.                     continue
  292.                 if source.get('type') == 'application/x-mpegURL' or determine_ext(video_url) == 'm3u8':
  293.                     formats.extend(self._extract_m3u8_formats(
  294.                         video_url, video_id, 'mp4', entry_protocol='m3u8_native',
  295.                         m3u8_id='hls', fatal=False))
  296.                     continue
  297.                 format_id = source.get('label')
  298.                 f = {
  299.                     'url': video_url,
  300.                     'format_id': '%sp' % format_id,
  301.                     'height': int_or_none(format_id),
  302.                 }
  303.                 if format_id:
  304.                     # Some videos contain additional metadata (e.g.
  305.                     # https://www.udemy.com/ios9-swift/learn/#/lecture/3383208)
  306.                     f = add_output_format_meta(f, format_id)
  307.                 formats.append(f)
  309.         def extract_subtitles(track_list):
  310.             if not isinstance(track_list, list):
  311.                 return
  312.             for track in track_list:
  313.                 if not isinstance(track, dict):
  314.                     continue
  315.                 if track.get('kind') != 'captions':
  316.                     continue
  317.                 src = url_or_none(track.get('src'))
  318.                 if not src:
  319.                     continue
  320.                 lang = track.get('language') or track.get(
  321.                     'srclang') or track.get('label')
  322.                 sub_dict = automatic_captions if track.get(
  323.                     'autogenerated') is True else subtitles
  324.                 sub_dict.setdefault(lang, []).append({
  325.                     'url': src,
  326.                 })
  328.         for url_kind in ('download', 'stream'):
  329.             urls = asset.get('%s_urls' % url_kind)
  330.             if isinstance(urls, dict):
  331.                 extract_formats(urls.get('Video'))
  333.         captions = asset.get('captions')
  334.         if isinstance(captions, list):
  335.             for cc in captions:
  336.                 if not isinstance(cc, dict):
  337.                     continue
  338.                 cc_url = url_or_none(cc.get('url'))
  339.                 if not cc_url:
  340.                     continue
  341.                 lang = try_get(cc, lambda x: x['locale']['locale'], compat_str)
  342.                 sub_dict = (automatic_captions if cc.get('source') == 'auto'
  343.                             else subtitles)
  344.                 sub_dict.setdefault(lang or 'en', []).append({
  345.                     'url': cc_url,
  346.                 })
  348.         view_html = lecture.get('view_html')
  349.         if view_html:
  350.             view_html_urls = set()
  351.             for source in re.findall(r'<source[^>]+>', view_html):
  352.                 attributes = extract_attributes(source)
  353.                 src = attributes.get('src')
  354.                 if not src:
  355.                     continue
  356.                 res = attributes.get('data-res')
  357.                 height = int_or_none(res)
  358.                 if src in view_html_urls:
  359.                     continue
  360.                 view_html_urls.add(src)
  361.                 if attributes.get('type') == 'application/x-mpegURL' or determine_ext(src) == 'm3u8':
  362.                     m3u8_formats = self._extract_m3u8_formats(
  363.                         src, video_id, 'mp4', entry_protocol='m3u8_native',
  364.                         m3u8_id='hls', fatal=False)
  365.                     for f in m3u8_formats:
  366.                         m = re.search(r'/hls_(?P<height>\d{3,4})_(?P<tbr>\d{2,})/', f['url'])
  367.                         if m:
  368.                             if not f.get('height'):
  369.                                 f['height'] = int(m.group('height'))
  370.                             if not f.get('tbr'):
  371.                                 f['tbr'] = int(m.group('tbr'))
  372.                     formats.extend(m3u8_formats)
  373.                 else:
  374.                     formats.append(add_output_format_meta({
  375.                         'url': src,
  376.                         'format_id': '%dp' % height if height else None,
  377.                         'height': height,
  378.                     }, res))
  380.             # react rendition since 2017.04.15 (see
  381.             # https://github.com/ytdl-org/youtube-dl/issues/12744)
  382.             data = self._parse_json(
  383.                 self._search_regex(
  384.                     r'videojs-setup-data=(["\'])(?P<data>{.+?})\1', view_html,
  385.                     'setup data', default='{}', group='data'), video_id,
  386.                 transform_source=unescapeHTML, fatal=False)
  387.             if data and isinstance(data, dict):
  388.                 extract_formats(data.get('sources'))
  389.                 if not duration:
  390.                     duration = int_or_none(data.get('duration'))
  391.                 extract_subtitles(data.get('tracks'))
  393.             if not subtitles and not automatic_captions:
  394.                 text_tracks = self._parse_json(
  395.                     self._search_regex(
  396.                         r'text-tracks=(["\'])(?P<data>\[.+?\])\1', view_html,
  397.                         'text tracks', default='{}', group='data'), video_id,
  398.                     transform_source=lambda s: js_to_json(unescapeHTML(s)),
  399.                     fatal=False)
  400.                 extract_subtitles(text_tracks)
  402.         if not formats and outputs:
  403.             for format_id, output in outputs.items():
  404.                 f = extract_output_format(output, format_id)
  405.                 if f.get('url'):
  406.                     formats.append(f)
  408.         self._sort_formats(formats, field_preference=('height', 'width', 'tbr', 'format_id'))
  410.         return {
  411.             'id': video_id,
  412.             'title': title,
  413.             'description': description,
  414.             'thumbnail': thumbnail,
  415.             'duration': duration,
  416.             'formats': formats,
  417.             'subtitles': subtitles,
  418.             'automatic_captions': automatic_captions,
  419.         }
  422. class UdemyCourseIE(UdemyIE):
  423.     IE_NAME = 'udemy:course'
  424.     _VALID_URL = r'https?://(?:[^/]+\.)?udemy\.com/(?P<id>[^/?#&]+)'
  425.     _TESTS = [{
  426.         'url': 'https://www.udemy.com/java-tutorial/',
  427.         'only_matching': True,
  428.     }, {
  429.         'url': 'https://wipro.udemy.com/java-tutorial/',
  430.         'only_matching': True,
  431.     }]
  433.     @classmethod
  434.     def suitable(cls, url):
  435.         return False if UdemyIE.suitable(url) else super(UdemyCourseIE, cls).suitable(url)
  437.     def _real_extract(self, url):
  438.         course_path = self._match_id(url)
  440.         webpage = self._download_webpage(url, course_path)
  442.         course_id, title = self._extract_course_info(webpage, course_path)
  444.         self._enroll_course(url, webpage, course_id)
  446.         response = self._download_json(
  447.             'https://www.udemy.com/api-2.0/courses/%s/cached-subscriber-curriculum-items' % course_id,
  448.             course_id, 'Downloading course curriculum', query={
  449.                 'fields[chapter]': 'title,object_index',
  450.                 'fields[lecture]': 'title,asset',
  451.                 'page_size': '1000',
  452.             })
  454.         entries = []
  455.         chapter, chapter_number = [None] * 2
  456.         for entry in response['results']:
  457.             clazz = entry.get('_class')
  458.             if clazz == 'lecture':
  459.                 asset = entry.get('asset')
  460.                 if isinstance(asset, dict):
  461.                     asset_type = asset.get('asset_type') or asset.get('assetType')
  462.                     if asset_type != 'Video':
  463.                         continue
  464.                 lecture_id = entry.get('id')
  465.                 if lecture_id:
  466.                     entry = {
  467.                         '_type': 'url_transparent',
  468.                         'url': 'https://www.udemy.com/%s/learn/v4/t/lecture/%s' % (course_path, entry['id']),
  469.                         'title': entry.get('title'),
  470.                         'ie_key': UdemyIE.ie_key(),
  471.                     }
  472.                     if chapter_number:
  473.                         entry['chapter_number'] = chapter_number
  474.                     if chapter:
  475.                         entry['chapter'] = chapter
  476.                     entries.append(entry)
  477.             elif clazz == 'chapter':
  478.                 chapter_number = entry.get('object_index')
  479.                 chapter = entry.get('title')
  481.         return self.playlist_result(entries, course_id, title)