import re import urllib.request from .common import InfoExtractor from ..compat import compat_HTTPError, compat_str, compat_urlparse from ..utils import ( ExtractorError, determine_ext, extract_attributes, float_or_none, int_or_none, js_to_json, sanitized_Request, try_get, unescapeHTML, url_or_none, urlencode_postdata, ) class UdemyIE(InfoExtractor): IE_NAME = 'udemy' _VALID_URL = r'''(?x) https?:// (?:[^/]+\.)?udemy\.com/ (?: [^#]+\#/lecture/| lecture/view/?\?lectureId=| [^/]+/learn/v4/t/lecture/ ) (?P\d+) ''' _LOGIN_URL = 'https://www.udemy.com/join/login-popup/?displayType=ajax&showSkipButton=1' _ORIGIN_URL = 'https://www.udemy.com' _NETRC_MACHINE = 'udemy' _TESTS = [{ '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', }, { # new URL schema 'url': 'https://www.udemy.com/electric-bass-right-from-the-start/learn/v4/t/lecture/4580906', 'only_matching': True, }, { # no url in outputs format entry 'url': 'https://www.udemy.com/learn-web-development-complete-step-by-step-guide-to-success/learn/v4/t/lecture/4125812', 'only_matching': True, }, { # only outputs rendition 'url': 'https://www.udemy.com/how-you-can-help-your-local-community-5-amazing-examples/learn/v4/t/lecture/3225750?start=0', 'only_matching': True, }, { 'url': 'https://wipro.udemy.com/java-tutorial/#/lecture/172757', 'only_matching': True, }] def _extract_course_info(self, webpage, video_id): course = self._parse_json( unescapeHTML(self._search_regex( r'ng-init=["\'].*\bcourse=({.+?})[;"\']', webpage, 'course', default='{}')), video_id, fatal=False) or {} course_id = course.get('id') or self._search_regex( [ r'data-course-id=["\'](\d+)', r'"courseId"\s*:\s*(\d+)' ], webpage, 'course id') return course_id, course.get('title') def _enroll_course(self, base_url, webpage, course_id): def combine_url(base_url, url): return compat_urlparse.urljoin(base_url, url) if not url.startswith('http') else url checkout_url = unescapeHTML(self._search_regex( r'href=(["\'])(?P(?:https?://(?:www\.)?udemy\.com)?/(?:payment|cart)/checkout/.+?)\1', webpage, 'checkout url', group='url', default=None)) if checkout_url: raise ExtractorError( 'Course %s is not free. You have to pay for it before you can download. ' 'Use this URL to confirm purchase: %s' % (course_id, combine_url(base_url, checkout_url)), expected=True) enroll_url = unescapeHTML(self._search_regex( r'href=(["\'])(?P(?:https?://(?:www\.)?udemy\.com)?/course/subscribe/.+?)\1', webpage, 'enroll url', group='url', default=None)) if enroll_url: webpage = self._download_webpage( combine_url(base_url, enroll_url), course_id, 'Enrolling in the course', headers={'Referer': base_url}) if '>You have enrolled in' in webpage: self.to_screen('%s: Successfully enrolled in the course' % course_id) def _download_lecture(self, course_id, lecture_id): return self._download_json( 'https://www.udemy.com/api-2.0/users/me/subscribed-courses/%s/lectures/%s?' % (course_id, lecture_id), lecture_id, 'Downloading lecture JSON', query={ 'fields[lecture]': 'title,description,view_html,asset', 'fields[asset]': 'asset_type,stream_url,thumbnail_url,download_urls,stream_urls,captions,data', }) 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_webpage_handle(self, *args, **kwargs): headers = kwargs.get('headers', {}).copy() 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' kwargs['headers'] = headers ret = super(UdemyIE, self)._download_webpage_handle( *args, **kwargs) if not ret: return ret webpage, _ = ret if any(p in webpage for p in ( '>Please verify you are a human', 'Access to this page has been denied because we believe you are using automation tools to browse the website', '"_pxCaptcha"')): raise ExtractorError( 'Udemy asks you to solve a CAPTCHA. Login with browser, ' 'solve CAPTCHA, then export cookies and pass cookie file to ' 'yt-dlp with --cookies.', expected=True) return ret def _download_json(self, url_or_request, *args, **kwargs): headers = { 'X-Udemy-Snail-Case': 'true', 'X-Requested-With': 'XMLHttpRequest', } for cookie in self.cookiejar: if cookie.name == 'client_id': headers['X-Udemy-Client-Id'] = cookie.value elif cookie.name == 'access_token': headers['X-Udemy-Bearer-Token'] = cookie.value headers['X-Udemy-Authorization'] = 'Bearer %s' % cookie.value if isinstance(url_or_request, urllib.request.Request): for header, value in headers.items(): url_or_request.add_header(header, value) else: url_or_request = sanitized_Request(url_or_request, headers=headers) response = super(UdemyIE, self)._download_json(url_or_request, *args, **kwargs) self._handle_error(response) return response def _perform_login(self, username, password): login_popup = self._download_webpage( self._LOGIN_URL, None, 'Downloading login popup') def is_logged(webpage): return any(re.search(p, webpage) for p in ( r'href=["\'](?:https://www\.udemy\.com)?/user/logout/', r'>Logout<')) # already logged in if is_logged(login_popup): return login_form = self._form_hidden_inputs('login-form', login_popup) login_form.update({ 'email': username, 'password': password, }) response = self._download_webpage( self._LOGIN_URL, None, 'Logging in', data=urlencode_postdata(login_form), headers={ 'Referer': self._ORIGIN_URL, 'Origin': self._ORIGIN_URL, }) if not is_logged(response): error = self._html_search_regex( r'(?s)]+class="form-errors[^"]*">(.+?)', response, 'error message', default=None) if error: raise ExtractorError('Unable to login: %s' % error, expected=True) raise ExtractorError('Unable to log in') def _real_extract(self, url): lecture_id = self._match_id(url) webpage = self._download_webpage(url, lecture_id) course_id, _ = self._extract_course_info(webpage, lecture_id) try: lecture = self._download_lecture(course_id, lecture_id) except ExtractorError as e: # Error could possibly mean we are not enrolled in the course if isinstance(e.cause, compat_HTTPError) and e.cause.code == 403: self._enroll_course(url, webpage, course_id) lecture = self._download_lecture(course_id, lecture_id) else: raise title = lecture['title'] description = lecture.get('description') asset = lecture['asset'] asset_type = asset.get('asset_type') or asset.get('assetType') if asset_type != 'Video': raise ExtractorError( 'Lecture %s is not a video' % lecture_id, expected=True) stream_url = asset.get('stream_url') or asset.get('streamUrl') if stream_url: youtube_url = self._search_regex( r'(https?://www\.youtube\.com/watch\?v=.*)', stream_url, 'youtube URL', default=None) if youtube_url: return self.url_result(youtube_url, 'Youtube') video_id = compat_str(asset['id']) thumbnail = asset.get('thumbnail_url') or asset.get('thumbnailUrl') duration = float_or_none(asset.get('data', {}).get('duration')) subtitles = {} automatic_captions = {} formats = [] def extract_output_format(src, f_id): return { 'url': src.get('url'), 'format_id': '%sp' % (src.get('height') or f_id), 'width': int_or_none(src.get('width')), 'height': int_or_none(src.get('height')), 'vbr': int_or_none(src.get('video_bitrate_in_kbps')), 'vcodec': src.get('video_codec'), 'fps': int_or_none(src.get('frame_rate')), 'abr': int_or_none(src.get('audio_bitrate_in_kbps')), 'acodec': src.get('audio_codec'), 'asr': int_or_none(src.get('audio_sample_rate')), 'tbr': int_or_none(src.get('total_bitrate_in_kbps')), 'filesize': int_or_none(src.get('file_size_in_bytes')), } outputs = asset.get('data', {}).get('outputs') if not isinstance(outputs, dict): outputs = {} def add_output_format_meta(f, key): output = outputs.get(key) if isinstance(output, dict): output_format = extract_output_format(output, key) output_format.update(f) return output_format return f def extract_formats(source_list): if not isinstance(source_list, list): return for source in source_list: video_url = url_or_none(source.get('file') or source.get('src')) if not video_url: continue if source.get('type') == 'application/x-mpegURL' or determine_ext(video_url) == 'm3u8': formats.extend(self._extract_m3u8_formats( video_url, video_id, 'mp4', entry_protocol='m3u8_native', m3u8_id='hls', fatal=False)) continue format_id = source.get('label') f = { 'url': video_url, 'format_id': '%sp' % format_id, 'height': int_or_none(format_id), } if format_id: # Some videos contain additional metadata (e.g. # https://www.udemy.com/ios9-swift/learn/#/lecture/3383208) f = add_output_format_meta(f, format_id) formats.append(f) def extract_subtitles(track_list): if not isinstance(track_list, list): return for track in track_list: if not isinstance(track, dict): continue if track.get('kind') != 'captions': continue src = url_or_none(track.get('src')) if not src: continue lang = track.get('language') or track.get( 'srclang') or track.get('label') sub_dict = automatic_captions if track.get( 'autogenerated') is True else subtitles sub_dict.setdefault(lang, []).append({ 'url': src, }) for url_kind in ('download', 'stream'): urls = asset.get('%s_urls' % url_kind) if isinstance(urls, dict): extract_formats(urls.get('Video')) captions = asset.get('captions') if isinstance(captions, list): for cc in captions: if not isinstance(cc, dict): continue cc_url = url_or_none(cc.get('url')) if not cc_url: continue lang = try_get(cc, lambda x: x['locale']['locale'], compat_str) sub_dict = (automatic_captions if cc.get('source') == 'auto' else subtitles) sub_dict.setdefault(lang or 'en', []).append({ 'url': cc_url, }) view_html = lecture.get('view_html') if view_html: view_html_urls = set() for source in re.findall(r']+>', view_html): attributes = extract_attributes(source) src = attributes.get('src') if not src: continue res = attributes.get('data-res') height = int_or_none(res) if src in view_html_urls: continue view_html_urls.add(src) if attributes.get('type') == 'application/x-mpegURL' or determine_ext(src) == 'm3u8': m3u8_formats = self._extract_m3u8_formats( src, video_id, 'mp4', entry_protocol='m3u8_native', m3u8_id='hls', fatal=False) for f in m3u8_formats: m = re.search(r'/hls_(?P\d{3,4})_(?P\d{2,})/', f['url']) if m: if not f.get('height'): f['height'] = int(m.group('height')) if not f.get('tbr'): f['tbr'] = int(m.group('tbr')) formats.extend(m3u8_formats) else: formats.append(add_output_format_meta({ 'url': src, 'format_id': '%dp' % height if height else None, 'height': height, }, res)) # react rendition since 2017.04.15 (see # https://github.com/ytdl-org/youtube-dl/issues/12744) data = self._parse_json( self._search_regex( r'videojs-setup-data=(["\'])(?P{.+?})\1', view_html, 'setup data', default='{}', group='data'), video_id, transform_source=unescapeHTML, fatal=False) if data and isinstance(data, dict): extract_formats(data.get('sources')) if not duration: duration = int_or_none(data.get('duration')) extract_subtitles(data.get('tracks')) if not subtitles and not automatic_captions: text_tracks = self._parse_json( self._search_regex( r'text-tracks=(["\'])(?P\[.+?\])\1', view_html, 'text tracks', default='{}', group='data'), video_id, transform_source=lambda s: js_to_json(unescapeHTML(s)), fatal=False) extract_subtitles(text_tracks) if not formats and outputs: for format_id, output in outputs.items(): f = extract_output_format(output, format_id) if f.get('url'): formats.append(f) self._sort_formats(formats) return { 'id': video_id, 'title': title, 'description': description, 'thumbnail': thumbnail, 'duration': duration, 'formats': formats, 'subtitles': subtitles, 'automatic_captions': automatic_captions, } class UdemyCourseIE(UdemyIE): IE_NAME = 'udemy:course' _VALID_URL = r'https?://(?:[^/]+\.)?udemy\.com/(?P[^/?#&]+)' _TESTS = [{ 'url': 'https://www.udemy.com/java-tutorial/', 'only_matching': True, }, { 'url': 'https://wipro.udemy.com/java-tutorial/', 'only_matching': True, }] @classmethod def suitable(cls, url): return False if UdemyIE.suitable(url) else super(UdemyCourseIE, cls).suitable(url) def _real_extract(self, url): course_path = self._match_id(url) webpage = self._download_webpage(url, course_path) course_id, title = self._extract_course_info(webpage, course_path) self._enroll_course(url, webpage, course_id) response = self._download_json( 'https://www.udemy.com/api-2.0/courses/%s/cached-subscriber-curriculum-items' % course_id, course_id, 'Downloading course curriculum', query={ 'fields[chapter]': 'title,object_index', 'fields[lecture]': 'title,asset', 'page_size': '1000', }) entries = [] chapter, chapter_number = [None] * 2 for entry in response['results']: clazz = entry.get('_class') if clazz == 'lecture': asset = entry.get('asset') if isinstance(asset, dict): asset_type = asset.get('asset_type') or asset.get('assetType') if asset_type != 'Video': continue lecture_id = entry.get('id') if lecture_id: entry = { '_type': 'url_transparent', 'url': 'https://www.udemy.com/%s/learn/v4/t/lecture/%s' % (course_path, entry['id']), 'title': entry.get('title'), 'ie_key': UdemyIE.ie_key(), } if chapter_number: entry['chapter_number'] = chapter_number if chapter: entry['chapter'] = chapter entries.append(entry) elif clazz == 'chapter': chapter_number = entry.get('object_index') chapter = entry.get('title') return self.playlist_result(entries, course_id, title)