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- import re
- import urllib.parse
- from .common import InfoExtractor
- from ..utils import (
- ExtractorError,
- int_or_none,
- urlencode_postdata,
- )
- class LyndaBaseIE(InfoExtractor):
- _SIGNIN_URL = 'https://www.lynda.com/signin/lynda'
- _PASSWORD_URL = 'https://www.lynda.com/signin/password'
- _USER_URL = 'https://www.lynda.com/signin/user'
- _ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.'
- _NETRC_MACHINE = 'lynda'
- @staticmethod
- def _check_error(json_string, key_or_keys):
- keys = [key_or_keys] if isinstance(key_or_keys, str) else key_or_keys
- for key in keys:
- error = json_string.get(key)
- if error:
- raise ExtractorError(f'Unable to login: {error}', expected=True)
- def _perform_login_step(self, form_html, fallback_action_url, extra_form_data, note, referrer_url):
- action_url = self._search_regex(
- r'<form[^>]+action=(["\'])(?P<url>.+?)\1', form_html,
- 'post url', default=fallback_action_url, group='url')
- if not action_url.startswith('http'):
- action_url = urllib.parse.urljoin(self._SIGNIN_URL, action_url)
- form_data = self._hidden_inputs(form_html)
- form_data.update(extra_form_data)
- response = self._download_json(
- action_url, None, note,
- data=urlencode_postdata(form_data),
- headers={
- 'Referer': referrer_url,
- 'X-Requested-With': 'XMLHttpRequest',
- }, expected_status=(418, 500))
- self._check_error(response, ('email', 'password', 'ErrorMessage'))
- return response, action_url
- def _perform_login(self, username, password):
- # Step 1: download signin page
- signin_page = self._download_webpage(
- self._SIGNIN_URL, None, 'Downloading signin page')
- # Already logged in
- if any(re.search(p, signin_page) for p in (
- r'isLoggedIn\s*:\s*true', r'logout\.aspx', r'>Log out<')):
- return
- # Step 2: submit email
- signin_form = self._search_regex(
- r'(?s)(<form[^>]+data-form-name=["\']signin["\'][^>]*>.+?</form>)',
- signin_page, 'signin form')
- signin_page, signin_url = self._login_step(
- signin_form, self._PASSWORD_URL, {'email': username},
- 'Submitting email', self._SIGNIN_URL)
- # Step 3: submit password
- password_form = signin_page['body']
- self._login_step(
- password_form, self._USER_URL, {'email': username, 'password': password},
- 'Submitting password', signin_url)
- class LyndaIE(LyndaBaseIE):
- IE_NAME = 'lynda'
- IE_DESC = 'lynda.com videos'
- _VALID_URL = r'''(?x)
- https?://
- (?:www\.)?(?:lynda\.com|educourse\.ga)/
- (?:
- (?:[^/]+/){2,3}(?P<course_id>\d+)|
- player/embed
- )/
- (?P<id>\d+)
- '''
- _TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]'
- _TESTS = [{
- 'url': 'https://www.lynda.com/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html',
- # md5 is unstable
- '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,
- }, {
- 'url': 'https://educourse.ga/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html',
- 'only_matching': True,
- }, {
- 'url': 'https://www.lynda.com/de/Graphic-Design-tutorials/Willkommen-Grundlagen-guten-Gestaltung/393570/393572-4.html',
- 'only_matching': True,
- }, {
- # Status="NotFound", Message="Transcript not found"
- 'url': 'https://www.lynda.com/ASP-NET-tutorials/What-you-should-know/5034180/2811512-4.html',
- 'only_matching': True,
- }]
- def _raise_unavailable(self, video_id):
- self.raise_login_required(
- f'Video {video_id} is only available for members')
- def _real_extract(self, url):
- mobj = self._match_valid_url(url)
- video_id = mobj.group('id')
- course_id = mobj.group('course_id')
- query = {
- 'videoId': video_id,
- 'type': 'video',
- }
- video = self._download_json(
- 'https://www.lynda.com/ajax/player', video_id,
- 'Downloading video JSON', fatal=False, query=query)
- # Fallback scenario
- if not video:
- query['courseId'] = course_id
- play = self._download_json(
- f'https://www.lynda.com/ajax/course/{course_id}/{video_id}/play', video_id, 'Downloading play JSON')
- if not play:
- self._raise_unavailable(video_id)
- formats = []
- for formats_dict in play:
- urls = formats_dict.get('urls')
- if not isinstance(urls, dict):
- continue
- cdn = formats_dict.get('name')
- for format_id, format_url in urls.items():
- if not format_url:
- continue
- formats.append({
- 'url': format_url,
- 'format_id': f'{cdn}-{format_id}' if cdn else format_id,
- 'height': int_or_none(format_id),
- })
- conviva = self._download_json(
- 'https://www.lynda.com/ajax/player/conviva', video_id,
- 'Downloading conviva JSON', query=query)
- return {
- 'id': video_id,
- 'title': conviva['VideoTitle'],
- 'description': conviva.get('VideoDescription'),
- 'release_year': int_or_none(conviva.get('ReleaseYear')),
- 'duration': int_or_none(conviva.get('Duration')),
- 'creator': conviva.get('Author'),
- 'formats': formats,
- }
- if 'Status' in video:
- raise ExtractorError(
- 'lynda returned error: {}'.format(video['Message']), expected=True)
- if video.get('HasAccess') is False:
- self._raise_unavailable(video_id)
- video_id = str(video.get('ID') or video_id)
- duration = int_or_none(video.get('DurationInSeconds'))
- title = video['Title']
- formats = []
- fmts = video.get('Formats')
- if fmts:
- formats.extend([{
- 'url': f['Url'],
- 'ext': f.get('Extension'),
- 'width': int_or_none(f.get('Width')),
- 'height': int_or_none(f.get('Height')),
- 'filesize': int_or_none(f.get('FileSize')),
- 'format_id': str(f.get('Resolution')) if f.get('Resolution') else None,
- } for f in fmts if f.get('Url')])
- prioritized_streams = video.get('PrioritizedStreams')
- if prioritized_streams:
- for prioritized_stream_id, prioritized_stream in prioritized_streams.items():
- formats.extend([{
- 'url': video_url,
- 'height': int_or_none(format_id),
- 'format_id': f'{prioritized_stream_id}-{format_id}',
- } for format_id, video_url in prioritized_stream.items()])
- self._check_formats(formats, video_id)
- subtitles = self.extract_subtitles(video_id)
- return {
- 'id': video_id,
- 'title': title,
- 'duration': duration,
- 'subtitles': subtitles,
- 'formats': formats,
- }
- def _fix_subtitles(self, subs):
- srt = ''
- seq_counter = 0
- for seq_current, seq_next in zip(subs, subs[1:]):
- m_current = re.match(self._TIMECODE_REGEX, seq_current['Timecode'])
- if m_current is None:
- continue
- 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 += f'{seq_counter}\r\n{appear_time} --> {disappear_time}\r\n{text}\r\n\r\n'
- if srt:
- return srt
- def _get_subtitles(self, video_id):
- url = f'https://www.lynda.com/ajax/player?videoId={video_id}&type=transcript'
- subs = self._download_webpage(
- url, video_id, 'Downloading subtitles JSON', fatal=False)
- if not subs or 'Status="NotFound"' in subs:
- return {}
- subs = self._parse_json(subs, video_id, fatal=False)
- if not subs:
- return {}
- fixed_subs = self._fix_subtitles(subs)
- if fixed_subs:
- return {'en': [{'ext': 'srt', 'data': fixed_subs}]}
- 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|educourse\.ga)/(?P<coursepath>(?:[^/]+/){2,3}(?P<courseid>\d+))-2\.html'
- _TESTS = [{
- 'url': 'https://www.lynda.com/Graphic-Design-tutorials/Grundlagen-guten-Gestaltung/393570-2.html',
- 'only_matching': True,
- }, {
- 'url': 'https://www.lynda.com/de/Graphic-Design-tutorials/Grundlagen-guten-Gestaltung/393570-2.html',
- 'only_matching': True,
- }]
- def _real_extract(self, url):
- mobj = self._match_valid_url(url)
- course_path = mobj.group('coursepath')
- course_id = mobj.group('courseid')
- item_template = f'https://www.lynda.com/{course_path}/%s-4.html'
- course = self._download_json(
- f'https://www.lynda.com/ajax/player?courseId={course_id}&type=course',
- course_id, 'Downloading course JSON', fatal=False)
- if not course:
- webpage = self._download_webpage(url, course_id)
- entries = [
- self.url_result(
- item_template % video_id, ie=LyndaIE.ie_key(),
- video_id=video_id)
- for video_id in re.findall(
- r'data-video-id=["\'](\d+)', webpage)]
- return self.playlist_result(
- entries, course_id,
- self._og_search_title(webpage, fatal=False),
- self._og_search_description(webpage))
- if course.get('Status') == 'NotFound':
- raise ExtractorError(
- f'Course {course_id} does not exist', expected=True)
- unaccessible_videos = 0
- entries = []
- # 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['Chapters']:
- for video in chapter.get('Videos', []):
- if video.get('HasAccess') is False:
- unaccessible_videos += 1
- continue
- video_id = video.get('ID')
- if video_id:
- entries.append({
- '_type': 'url_transparent',
- 'url': item_template % video_id,
- 'ie_key': LyndaIE.ie_key(),
- 'chapter': chapter.get('Title'),
- 'chapter_number': int_or_none(chapter.get('ChapterIndex')),
- 'chapter_id': str(chapter.get('ID')),
- })
- if unaccessible_videos > 0:
- self.report_warning(
- f'{unaccessible_videos} videos are only available for members (or paid members) '
- f'and will not be downloaded. {self._ACCOUNT_CREDENTIALS_HINT}')
- course_title = course.get('Title')
- course_description = course.get('Description')
- return self.playlist_result(entries, course_id, course_title, course_description)
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