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