X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/415fdb62500dca2e22067a05008dfbf87c75b662..aebf9c8f14c9f5d45f8c6aa523ee135fdfd421b2:/youtube_dl/extractor/udemy.py diff --git a/youtube_dl/extractor/udemy.py b/youtube_dl/extractor/udemy.py index 054f427..f5b5e7f 100644 --- a/youtube_dl/extractor/udemy.py +++ b/youtube_dl/extractor/udemy.py @@ -1,19 +1,25 @@ from __future__ import unicode_literals -import re - from .common import InfoExtractor -from ..utils import ( +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\d+)' - _LOGIN_URL = 'https://www.udemy.com/join/login-submit/' + _LOGIN_URL = 'https://www.udemy.com/join/login-popup/?displayType=ajax&showSkipButton=1' + _ORIGIN_URL = 'https://www.udemy.com' _NETRC_MACHINE = 'udemy' _TESTS = [{ @@ -29,6 +35,35 @@ class UdemyIE(InfoExtractor): 'skip': 'Requires udemy account credentials', }] + def _enroll_course(self, webpage, course_id): + checkout_url = unescapeHTML(self._search_regex( + r'href=(["\'])(?Phttps?://(?: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=(["\'])(?Phttps?://(?: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 @@ -40,8 +75,25 @@ class UdemyIE(InfoExtractor): 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) + 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 @@ -51,68 +103,114 @@ class UdemyIE(InfoExtractor): 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) + return login_popup = self._download_webpage( - 'https://www.udemy.com/join/login-popup?displayType=ajax&showSkipButton=1', None, - 'Downloading login popup') + self._LOGIN_URL, None, 'Downloading login popup') - if 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 - csrf = self._html_search_regex(r']+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): - mobj = re.match(self._VALID_URL, url) - lecture_id = mobj.group('id') + lecture_id = self._match_id(url) + + webpage = self._download_webpage(url, lecture_id) + + course_id = self._search_regex( + r'data-course-id=["\'](\d+)', webpage, 'course id') - lecture = self._download_json( - 'https://www.udemy.com/api-1.1/lectures/%s' % lecture_id, lecture_id, 'Downloading lecture JSON') + 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 - if lecture['assetType'] != 'Video': - raise ExtractorError('Lecture %s is not a video' % lecture_id, expected=True) + title = lecture['title'] + description = lecture.get('description') 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') + 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) - 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', - }, - ] + 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') - title = lecture['title'] - description = lecture['description'] + 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, @@ -126,9 +224,7 @@ class UdemyIE(InfoExtractor): class UdemyCourseIE(UdemyIE): IE_NAME = 'udemy:course' - _VALID_URL = r'https?://www\.udemy\.com/(?P[\da-z-]+)' - _SUCCESSFULLY_ENROLLED = '>You have enrolled in this course!<' - _ALREADY_ENROLLED = '>You are already taking this course.<' + _VALID_URL = r'https?://www\.udemy\.com/(?P[\da-z-]+)' _TESTS = [] @classmethod @@ -136,29 +232,42 @@ class UdemyCourseIE(UdemyIE): 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') + course_path = self._match_id(url) - response = self._download_json( - 'https://www.udemy.com/api-1.1/courses/%s' % course_path, course_path, 'Downloading course JSON') + webpage = self._download_webpage(url, course_path) - course_id = int(response['id']) - course_title = response['title'] + response = self._download_json( + 'https://www.udemy.com/api-1.1/courses/%s' % course_path, + course_path, 'Downloading course JSON') - webpage = self._download_webpage( - 'https://www.udemy.com/course/subscribe/?courseId=%s' % course_id, course_id, 'Enrolling in the course') + course_id = response['id'] + course_title = response.get('title') - 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) + self._enroll_course(webpage, course_id) - response = self._download_json('https://www.udemy.com/api-1.1/courses/%s/curriculum' % 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 + 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)