from __future__ import unicode_literals from .common import InfoExtractor from ..compat import ( compat_HTTPError, compat_urllib_parse, compat_urllib_request, ) from ..utils import ( ExtractorError, float_or_none, int_or_none, sanitized_Request, unescapeHTML, ) 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-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', }] def _enroll_course(self, webpage, course_id): checkout_url = unescapeHTML(self._search_regex( r'href=(["\'])(?P<url>https?://(?:www\.)?udemy\.com/payment/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, checkout_url), expected=True) enroll_url = unescapeHTML(self._search_regex( r'href=(["\'])(?P<url>https?://(?:www\.)?udemy\.com/course/subscribe/.+?)\1', webpage, 'enroll url', group='url', default=None)) if enroll_url: webpage = self._download_webpage(enroll_url, course_id, 'Enrolling in the course') 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?%s' % ( course_id, lecture_id, compat_urllib_parse.urlencode({ 'video_only': '', 'auto_play': '', 'fields[lecture]': 'title,description,asset', 'fields[asset]': 'asset_type,stream_url,thumbnail_url,download_urls,data', 'instructorPreviewMode': 'False', })), lecture_id, 'Downloading lecture JSON') 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_or_request, video_id, note='Downloading JSON metadata'): headers = { 'X-Udemy-Snail-Case': 'true', 'X-Requested-With': 'XMLHttpRequest', } for cookie in self._downloader.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, compat_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, 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: return login_popup = self._download_webpage( self._LOGIN_URL, None, 'Downloading login popup') def is_logged(webpage): return any(p in webpage for p in ['href="https://www.udemy.com/user/logout/', '>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.encode('utf-8'), 'password': password.encode('utf-8'), }) request = sanitized_Request( self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8')) request.add_header('Referer', self._ORIGIN_URL) request.add_header('Origin', self._ORIGIN_URL) response = self._download_webpage( request, None, 'Logging in as %s' % username) if not is_logged(response): error = self._html_search_regex( r'(?s)<div[^>]+class="form-errors[^"]*">(.+?)</div>', 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._search_regex( (r'data-course-id=["\'](\d+)', r'"id"\s*:\s*(\d+)'), webpage, 'course 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(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('assetType') or asset.get('asset_type') if asset_type != 'Video': raise ExtractorError( 'Lecture %s is not a video' % lecture_id, expected=True) stream_url = asset.get('streamUrl') or asset.get('stream_url') 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 = asset['id'] thumbnail = asset.get('thumbnailUrl') or asset.get('thumbnail_url') duration = float_or_none(asset.get('data', {}).get('duration')) outputs = asset.get('data', {}).get('outputs', {}) formats = [] for format_ in asset.get('download_urls', {}).get('Video', []): video_url = format_.get('file') if not video_url: continue format_id = format_.get('label') f = { 'url': format_['file'], '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) output = outputs.get(format_id) if isinstance(output, dict): f.update({ 'format_id': '%sp' % (output.get('label') or format_id), 'width': int_or_none(output.get('width')), 'height': int_or_none(output.get('height')), 'vbr': int_or_none(output.get('video_bitrate_in_kbps')), 'vcodec': output.get('video_codec'), 'fps': int_or_none(output.get('frame_rate')), 'abr': int_or_none(output.get('audio_bitrate_in_kbps')), 'acodec': output.get('audio_codec'), 'asr': int_or_none(output.get('audio_sample_rate')), 'tbr': int_or_none(output.get('total_bitrate_in_kbps')), 'filesize': int_or_none(output.get('file_size_in_bytes')), }) else: f['format_id'] = '%sp' % format_id formats.append(f) self._sort_formats(formats) 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<id>[\da-z-]+)' _TESTS = [] @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) response = self._download_json( 'https://www.udemy.com/api-1.1/courses/%s' % course_path, course_path, 'Downloading course JSON') course_id = response['id'] course_title = response.get('title') self._enroll_course(webpage, course_id) response = self._download_json( 'https://www.udemy.com/api-1.1/courses/%s/curriculum' % course_id, course_id, 'Downloading course curriculum') entries = [] chapter, chapter_number = None, None for asset in response: asset_type = asset.get('assetType') or asset.get('asset_type') if asset_type == 'Video': asset_id = asset.get('id') if asset_id: entry = { '_type': 'url_transparent', 'url': 'https://www.udemy.com/%s/#/lecture/%s' % (course_path, asset['id']), 'ie_key': UdemyIE.ie_key(), } if chapter_number: entry['chapter_number'] = chapter_number if chapter: entry['chapter'] = chapter entries.append(entry) elif asset.get('type') == 'chapter': chapter_number = asset.get('index') or asset.get('object_index') chapter = asset.get('title') return self.playlist_result(entries, course_id, course_title)