from __future__ import unicode_literals import re import json from .common import InfoExtractor from ..compat import ( compat_str, compat_urllib_parse, compat_urllib_request, ) from ..utils import ( ExtractorError, clean_html, int_or_none, ) class LyndaBaseIE(InfoExtractor): _LOGIN_URL = 'https://www.lynda.com/login/login.aspx' _ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.' _NETRC_MACHINE = 'lynda' def _real_initialize(self): self._login() def _login(self): (username, password) = self._get_login_info() if username is None: return login_form = { 'username': username.encode('utf-8'), 'password': password.encode('utf-8'), 'remember': 'false', 'stayPut': 'false' } request = compat_urllib_request.Request( self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8')) login_page = self._download_webpage( request, None, 'Logging in as %s' % username) # Not (yet) logged in m = re.search(r'loginResultJson\s*=\s*\'(?P<json>[^\']+)\';', login_page) if m is not None: response = m.group('json') response_json = json.loads(response) state = response_json['state'] if state == 'notlogged': raise ExtractorError( 'Unable to login, incorrect username and/or password', expected=True) # This is when we get popup: # > You're already logged in to lynda.com on two devices. # > If you log in here, we'll log you out of another device. # So, we need to confirm this. if state == 'conflicted': confirm_form = { 'username': '', 'password': '', 'resolve': 'true', 'remember': 'false', 'stayPut': 'false', } request = compat_urllib_request.Request( self._LOGIN_URL, compat_urllib_parse.urlencode(confirm_form).encode('utf-8')) login_page = self._download_webpage( request, None, 'Confirming log in and log out from another device') if all(not re.search(p, login_page) for p in ('isLoggedIn\s*:\s*true', r'logout\.aspx', r'>Log out<')): if 'login error' in login_page: mobj = re.search( r'(?s)<h1[^>]+class="topmost">(?P<title>[^<]+)</h1>\s*<div>(?P<description>.+?)</div>', login_page) if mobj: raise ExtractorError( 'lynda returned error: %s - %s' % (mobj.group('title'), clean_html(mobj.group('description'))), expected=True) raise ExtractorError('Unable to log in') class LyndaIE(LyndaBaseIE): IE_NAME = 'lynda' IE_DESC = 'lynda.com videos' _VALID_URL = r'https?://www\.lynda\.com/(?:[^/]+/[^/]+/\d+|player/embed)/(?P<id>\d+)' _NETRC_MACHINE = 'lynda' _TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]' _TESTS = [{ 'url': 'http://www.lynda.com/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html', 'md5': 'ecfc6862da89489161fb9cd5f5a6fac1', 'info_dict': { 'id': '114408', 'ext': 'mp4', 'title': 'Using the exercise files', 'duration': 68 } }, { 'url': 'https://www.lynda.com/player/embed/133770?tr=foo=1;bar=g;fizz=rt&fs=0', 'only_matching': True, }] def _real_extract(self, url): video_id = self._match_id(url) page = self._download_webpage( 'http://www.lynda.com/ajax/player?videoId=%s&type=video' % video_id, video_id, 'Downloading video JSON') video_json = json.loads(page) if 'Status' in video_json: raise ExtractorError( 'lynda returned error: %s' % video_json['Message'], expected=True) if video_json['HasAccess'] is False: self.raise_login_required('Video %s is only available for members' % video_id) video_id = compat_str(video_json['ID']) duration = video_json['DurationInSeconds'] title = video_json['Title'] formats = [] fmts = video_json.get('Formats') if fmts: formats.extend([ { 'url': fmt['Url'], 'ext': fmt['Extension'], 'width': fmt['Width'], 'height': fmt['Height'], 'filesize': fmt['FileSize'], 'format_id': str(fmt['Resolution']) } for fmt in fmts]) prioritized_streams = video_json.get('PrioritizedStreams') if prioritized_streams: formats.extend([ { 'url': video_url, 'width': int_or_none(format_id), 'format_id': format_id, } for format_id, video_url in prioritized_streams['0'].items() ]) self._check_formats(formats, video_id) self._sort_formats(formats) subtitles = self.extract_subtitles(video_id, page) return { 'id': video_id, 'title': title, 'duration': duration, 'subtitles': subtitles, 'formats': formats } def _fix_subtitles(self, subs): srt = '' seq_counter = 0 for pos in range(0, len(subs) - 1): seq_current = subs[pos] m_current = re.match(self._TIMECODE_REGEX, seq_current['Timecode']) if m_current is None: continue seq_next = subs[pos + 1] m_next = re.match(self._TIMECODE_REGEX, seq_next['Timecode']) if m_next is None: continue appear_time = m_current.group('timecode') disappear_time = m_next.group('timecode') text = seq_current['Caption'].strip() if text: seq_counter += 1 srt += '%s\r\n%s --> %s\r\n%s\r\n\r\n' % (seq_counter, appear_time, disappear_time, text) if srt: return srt def _get_subtitles(self, video_id, webpage): url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id subs = self._download_json(url, None, False) if subs: return {'en': [{'ext': 'srt', 'data': self._fix_subtitles(subs)}]} else: return {} class LyndaCourseIE(LyndaBaseIE): IE_NAME = 'lynda:course' IE_DESC = 'lynda.com online courses' # Course link equals to welcome/introduction video link of same course # We will recognize it as course link _VALID_URL = r'https?://(?:www|m)\.lynda\.com/(?P<coursepath>[^/]+/[^/]+/(?P<courseid>\d+))-\d\.html' def _real_extract(self, url): mobj = re.match(self._VALID_URL, url) course_path = mobj.group('coursepath') course_id = mobj.group('courseid') page = self._download_webpage( 'http://www.lynda.com/ajax/player?courseId=%s&type=course' % course_id, course_id, 'Downloading course JSON') course_json = json.loads(page) if 'Status' in course_json and course_json['Status'] == 'NotFound': raise ExtractorError( 'Course %s does not exist' % course_id, expected=True) unaccessible_videos = 0 videos = [] # Might want to extract videos right here from video['Formats'] as it seems 'Formats' is not provided # by single video API anymore for chapter in course_json['Chapters']: for video in chapter['Videos']: if video['HasAccess'] is False: unaccessible_videos += 1 continue videos.append(video['ID']) if unaccessible_videos > 0: self._downloader.report_warning( '%s videos are only available for members (or paid members) and will not be downloaded. ' % unaccessible_videos + self._ACCOUNT_CREDENTIALS_HINT) entries = [ self.url_result( 'http://www.lynda.com/%s/%s-4.html' % (course_path, video_id), 'Lynda') for video_id in videos] course_title = course_json['Title'] return self.playlist_result(entries, course_id, course_title)