from __future__ import unicode_literals import collections import json import os import random import re from .common import InfoExtractor from ..compat import ( compat_str, compat_urlparse, ) from ..utils import ( ExtractorError, float_or_none, int_or_none, parse_duration, qualities, sanitized_Request, srt_subtitles_timecode, urlencode_postdata, ) class PluralsightBaseIE(InfoExtractor): _API_BASE = 'http://app.pluralsight.com' class PluralsightIE(PluralsightBaseIE): IE_NAME = 'pluralsight' _VALID_URL = r'https?://(?:(?:www|app)\.)?pluralsight\.com/training/player\?' _LOGIN_URL = 'https://app.pluralsight.com/id/' _NETRC_MACHINE = 'pluralsight' _TESTS = [{ 'url': 'http://www.pluralsight.com/training/player?author=mike-mckeown&name=hosting-sql-server-windows-azure-iaas-m7-mgmt&mode=live&clip=3&course=hosting-sql-server-windows-azure-iaas', 'md5': '4d458cf5cf4c593788672419a8dd4cf8', 'info_dict': { 'id': 'hosting-sql-server-windows-azure-iaas-m7-mgmt-04', 'ext': 'mp4', 'title': 'Management of SQL Server - Demo Monitoring', 'duration': 338, }, 'skip': 'Requires pluralsight account credentials', }, { 'url': 'https://app.pluralsight.com/training/player?course=angularjs-get-started&author=scott-allen&name=angularjs-get-started-m1-introduction&clip=0&mode=live', 'only_matching': True, }, { # available without pluralsight account 'url': 'http://app.pluralsight.com/training/player?author=scott-allen&name=angularjs-get-started-m1-introduction&mode=live&clip=0&course=angularjs-get-started', 'only_matching': True, }] def _real_initialize(self): self._login() def _login(self): (username, password) = self._get_login_info() if username is None: return login_page = self._download_webpage( self._LOGIN_URL, None, 'Downloading login page') login_form = self._hidden_inputs(login_page) login_form.update({ 'Username': username, 'Password': password, }) post_url = self._search_regex( r']+action=(["\'])(?P.+?)\1', login_page, 'post url', default=self._LOGIN_URL, group='url') if not post_url.startswith('http'): post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url) request = sanitized_Request( post_url, urlencode_postdata(login_form)) request.add_header('Content-Type', 'application/x-www-form-urlencoded') response = self._download_webpage( request, None, 'Logging in as %s' % username) error = self._search_regex( r']+class="field-validation-error"[^>]*>([^<]+)', response, 'error message', default=None) if error: raise ExtractorError('Unable to login: %s' % error, expected=True) if all(p not in response for p in ('__INITIAL_STATE__', '"currentUser"')): raise ExtractorError('Unable to log in') def _get_subtitles(self, author, clip_id, lang, name, duration, video_id): captions_post = { 'a': author, 'cn': clip_id, 'lc': lang, 'm': name, } captions = self._download_json( '%s/training/Player/Captions' % self._API_BASE, video_id, 'Downloading captions JSON', 'Unable to download captions JSON', fatal=False, data=json.dumps(captions_post).encode('utf-8'), headers={'Content-Type': 'application/json;charset=utf-8'}) if captions: return { lang: [{ 'ext': 'json', 'data': json.dumps(captions), }, { 'ext': 'srt', 'data': self._convert_subtitles(duration, captions), }] } @staticmethod def _convert_subtitles(duration, subs): srt = '' for num, current in enumerate(subs): current = subs[num] start, text = float_or_none( current.get('DisplayTimeOffset')), current.get('Text') if start is None or text is None: continue end = duration if num == len(subs) - 1 else float_or_none( subs[num + 1].get('DisplayTimeOffset')) srt += os.linesep.join( ( '%d' % num, '%s --> %s' % ( srt_subtitles_timecode(start), srt_subtitles_timecode(end)), text, os.linesep, )) return srt def _real_extract(self, url): qs = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query) author = qs.get('author', [None])[0] name = qs.get('name', [None])[0] clip_id = qs.get('clip', [None])[0] course = qs.get('course', [None])[0] if any(not f for f in (author, name, clip_id, course,)): raise ExtractorError('Invalid URL', expected=True) display_id = '%s-%s' % (name, clip_id) webpage = self._download_webpage(url, display_id) modules = self._search_regex( r'moduleCollection\s*:\s*new\s+ModuleCollection\((\[.+?\])\s*,\s*\$rootScope\)', webpage, 'modules', default=None) if modules: collection = self._parse_json(modules, display_id) else: # Webpage may be served in different layout (see # https://github.com/rg3/youtube-dl/issues/7607) collection = self._parse_json( self._search_regex( r'var\s+initialState\s*=\s*({.+?});\n', webpage, 'initial state'), display_id)['course']['modules'] module, clip = None, None for module_ in collection: if name in (module_.get('moduleName'), module_.get('name')): module = module_ for clip_ in module_.get('clips', []): clip_index = clip_.get('clipIndex') if clip_index is None: clip_index = clip_.get('index') if clip_index is None: continue if compat_str(clip_index) == clip_id: clip = clip_ break if not clip: raise ExtractorError('Unable to resolve clip') title = '%s - %s' % (module['title'], clip['title']) QUALITIES = { 'low': {'width': 640, 'height': 480}, 'medium': {'width': 848, 'height': 640}, 'high': {'width': 1024, 'height': 768}, 'high-widescreen': {'width': 1280, 'height': 720}, } QUALITIES_PREFERENCE = ('low', 'medium', 'high', 'high-widescreen',) quality_key = qualities(QUALITIES_PREFERENCE) AllowedQuality = collections.namedtuple('AllowedQuality', ['ext', 'qualities']) ALLOWED_QUALITIES = ( AllowedQuality('webm', ['high', ]), AllowedQuality('mp4', ['low', 'medium', 'high', ]), ) # Some courses also offer widescreen resolution for high quality (see # https://github.com/rg3/youtube-dl/issues/7766) widescreen = True if re.search( r'courseSupportsWidescreenVideoFormats\s*:\s*true', webpage) else False best_quality = 'high-widescreen' if widescreen else 'high' if widescreen: for allowed_quality in ALLOWED_QUALITIES: allowed_quality.qualities.append(best_quality) # In order to minimize the number of calls to ViewClip API and reduce # the probability of being throttled or banned by Pluralsight we will request # only single format until formats listing was explicitly requested. if self._downloader.params.get('listformats', False): allowed_qualities = ALLOWED_QUALITIES else: def guess_allowed_qualities(): req_format = self._downloader.params.get('format') or 'best' req_format_split = req_format.split('-', 1) if len(req_format_split) > 1: req_ext, req_quality = req_format_split for allowed_quality in ALLOWED_QUALITIES: if req_ext == allowed_quality.ext and req_quality in allowed_quality.qualities: return (AllowedQuality(req_ext, (req_quality, )), ) req_ext = 'webm' if self._downloader.params.get('prefer_free_formats') else 'mp4' return (AllowedQuality(req_ext, (best_quality, )), ) allowed_qualities = guess_allowed_qualities() formats = [] for ext, qualities_ in allowed_qualities: for quality in qualities_: f = QUALITIES[quality].copy() clip_post = { 'a': author, 'cap': 'false', 'cn': clip_id, 'course': course, 'lc': 'en', 'm': name, 'mt': ext, 'q': '%dx%d' % (f['width'], f['height']), } request = sanitized_Request( '%s/training/Player/ViewClip' % self._API_BASE, json.dumps(clip_post).encode('utf-8')) request.add_header('Content-Type', 'application/json;charset=utf-8') format_id = '%s-%s' % (ext, quality) clip_url = self._download_webpage( request, display_id, 'Downloading %s URL' % format_id, fatal=False) # Pluralsight tracks multiple sequential calls to ViewClip API and start # to return 429 HTTP errors after some time (see # https://github.com/rg3/youtube-dl/pull/6989). Moreover it may even lead # to account ban (see https://github.com/rg3/youtube-dl/issues/6842). # To somewhat reduce the probability of these consequences # we will sleep random amount of time before each call to ViewClip. self._sleep( random.randint(2, 5), display_id, '%(video_id)s: Waiting for %(timeout)s seconds to avoid throttling') if not clip_url: continue f.update({ 'url': clip_url, 'ext': ext, 'format_id': format_id, 'quality': quality_key(quality), }) formats.append(f) self._sort_formats(formats) duration = int_or_none( clip.get('duration')) or parse_duration(clip.get('formattedDuration')) # TODO: other languages? subtitles = self.extract_subtitles( author, clip_id, 'en', name, duration, display_id) return { 'id': clip.get('clipName') or clip['name'], 'title': title, 'duration': duration, 'creator': author, 'formats': formats, 'subtitles': subtitles, } class PluralsightCourseIE(PluralsightBaseIE): IE_NAME = 'pluralsight:course' _VALID_URL = r'https?://(?:(?:www|app)\.)?pluralsight\.com/(?:library/)?courses/(?P[^/]+)' _TESTS = [{ # Free course from Pluralsight Starter Subscription for Microsoft TechNet # https://offers.pluralsight.com/technet?loc=zTS3z&prod=zOTprodz&tech=zOttechz&prog=zOTprogz&type=zSOz&media=zOTmediaz&country=zUSz 'url': 'http://www.pluralsight.com/courses/hosting-sql-server-windows-azure-iaas', 'info_dict': { 'id': 'hosting-sql-server-windows-azure-iaas', 'title': 'Hosting SQL Server in Microsoft Azure IaaS Fundamentals', 'description': 'md5:61b37e60f21c4b2f91dc621a977d0986', }, 'playlist_count': 31, }, { # available without pluralsight account 'url': 'https://www.pluralsight.com/courses/angularjs-get-started', 'only_matching': True, }, { 'url': 'https://app.pluralsight.com/library/courses/understanding-microsoft-azure-amazon-aws/table-of-contents', 'only_matching': True, }] def _real_extract(self, url): course_id = self._match_id(url) # TODO: PSM cookie course = self._download_json( '%s/data/course/%s' % (self._API_BASE, course_id), course_id, 'Downloading course JSON') title = course['title'] description = course.get('description') or course.get('shortDescription') course_data = self._download_json( '%s/data/course/content/%s' % (self._API_BASE, course_id), course_id, 'Downloading course data JSON') entries = [] for num, module in enumerate(course_data, 1): for clip in module.get('clips', []): player_parameters = clip.get('playerParameters') if not player_parameters: continue entries.append({ '_type': 'url_transparent', 'url': '%s/training/player?%s' % (self._API_BASE, player_parameters), 'ie_key': PluralsightIE.ie_key(), 'chapter': module.get('title'), 'chapter_number': num, 'chapter_id': module.get('moduleRef'), }) return self.playlist_result(entries, course_id, title, description)