from __future__ import unicode_literals import re import json from .subtitles import SubtitlesInfoExtractor from .common import InfoExtractor from ..compat import ( compat_str, compat_urllib_parse, compat_urllib_request, ) from ..utils import ( ExtractorError, int_or_none, ) class LyndaIE(SubtitlesInfoExtractor): IE_NAME = 'lynda' IE_DESC = 'lynda.com videos' _VALID_URL = r'https?://www\.lynda\.com/[^/]+/[^/]+/\d+/(\d+)-\d\.html' _LOGIN_URL = 'https://www.lynda.com/login/login.aspx' _NETRC_MACHINE = 'lynda' _SUCCESSFUL_LOGIN_REGEX = r'isLoggedIn: true' _TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]' ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.' _TEST = { '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 } } def _real_initialize(self): self._login() def _real_extract(self, url): mobj = re.match(self._VALID_URL, url) video_id = mobj.group(1) 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: raise ExtractorError( 'Video %s is only available for members. ' % video_id + self.ACCOUNT_CREDENTIALS_HINT, expected=True) 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._sort_formats(formats) if self._downloader.params.get('listsubtitles', False): self._list_available_subtitles(video_id, page) return subtitles = self._fix_subtitles(self.extract_subtitles(video_id, page)) return { 'id': video_id, 'title': title, 'duration': duration, 'subtitles': subtitles, 'formats': formats } def _login(self): (username, password) = self._get_login_info() if username is None: return login_form = { 'username': username, 'password': password, 'remember': 'false', 'stayPut': 'false' } request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(login_form)) login_page = self._download_webpage(request, None, 'Logging in as %s' % username) # Not (yet) logged in m = re.search(r'loginResultJson = \'(?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)) login_page = self._download_webpage(request, None, 'Confirming log in and log out from another device') if re.search(self._SUCCESSFUL_LOGIN_REGEX, login_page) is None: raise ExtractorError('Unable to log in') def _fix_subtitles(self, subtitles): if subtitles is None: return subtitles # subtitles not requested fixed_subtitles = {} for k, v in subtitles.items(): subs = json.loads(v) if len(subs) == 0: continue srt = '' 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'] srt += '%s\r\n%s --> %s\r\n%s' % (str(pos), appear_time, disappear_time, text) if srt: fixed_subtitles[k] = srt return fixed_subtitles def _get_available_subtitles(self, video_id, webpage): url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id sub = self._download_webpage(url, None, False) sub_json = json.loads(sub) return {'en': url} if len(sub_json) > 0 else {} class LyndaCourseIE(InfoExtractor): 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 = [] (username, _) = self._get_login_info() # 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 username is None and 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 and will not be downloaded. ' % unaccessible_videos + LyndaIE.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)