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mirror of https://github.com/yt-dlp/yt-dlp.git synced 2024-12-11 16:15:46 +01:00
yt-dlp/yt_dlp/extractor/lynda.py
sepro add96eb9f8
[cleanup] Add more ruff rules (#10149)
Authored by: seproDev

Reviewed-by: bashonly <88596187+bashonly@users.noreply.github.com>
Reviewed-by: Simon Sawicki <contact@grub4k.xyz>
2024-06-12 01:09:58 +02:00

325 lines
12 KiB
Python

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)