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from __future__ import unicode_literals
import json
import random
import re
from .common import InfoExtractor
from ..compat import (
compat_b64decode,
compat_HTTPError,
compat_str,
)
from ..utils import (
clean_html,
ExtractorError,
js_to_json,
parse_duration,
try_get,
unified_timestamp,
urlencode_postdata,
urljoin,
)
class LinuxAcademyIE(InfoExtractor):
_VALID_URL = r'''(?x)
https?://
(?:www\.)?linuxacademy\.com/cp/
(?:
courses/lesson/course/(?P<chapter_id>\d+)/lesson/(?P<lesson_id>\d+)|
modules/view/id/(?P<course_id>\d+)
)
'''
_TESTS = [{
'url': 'https://linuxacademy.com/cp/courses/lesson/course/7971/lesson/2/module/675',
'info_dict': {
'id': '7971-2',
'ext': 'mp4',
'title': 'What Is Data Science',
'description': 'md5:c574a3c20607144fb36cb65bdde76c99',
'timestamp': 1607387907,
'upload_date': '20201208',
'duration': 304,
},
'params': {
'skip_download': True,
},
'skip': 'Requires Linux Academy account credentials',
}, {
'url': 'https://linuxacademy.com/cp/courses/lesson/course/1498/lesson/2',
'only_matching': True,
}, {
'url': 'https://linuxacademy.com/cp/modules/view/id/154',
'info_dict': {
'id': '154',
'title': 'AWS Certified Cloud Practitioner',
'description': 'md5:a68a299ca9bb98d41cca5abc4d4ce22c',
'duration': 28835,
},
'playlist_count': 41,
'skip': 'Requires Linux Academy account credentials',
}]
_AUTHORIZE_URL = 'https://login.linuxacademy.com/authorize'
_ORIGIN_URL = 'https://linuxacademy.com'
_CLIENT_ID = 'KaWxNn1C2Gc7n83W9OFeXltd8Utb5vvx'
_NETRC_MACHINE = 'linuxacademy'
def _real_initialize(self):
self._login()
def _login(self):
username, password = self._get_login_info()
if username is None:
return
def random_string():
return ''.join([
random.choice('0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._~')
for _ in range(32)])
webpage, urlh = self._download_webpage_handle(
self._AUTHORIZE_URL, None, 'Downloading authorize page', query={
'client_id': self._CLIENT_ID,
'response_type': 'token id_token',
'response_mode': 'web_message',
'redirect_uri': self._ORIGIN_URL,
'scope': 'openid email user_impersonation profile',
'audience': self._ORIGIN_URL,
'state': random_string(),
'nonce': random_string(),
})
login_data = self._parse_json(
self._search_regex(
r'atob\(\s*(["\'])(?P<value>(?:(?!\1).)+)\1', webpage,
'login info', group='value'), None,
transform_source=lambda x: compat_b64decode(x).decode('utf-8')
)['extraParams']
login_data.update({
'client_id': self._CLIENT_ID,
'redirect_uri': self._ORIGIN_URL,
'tenant': 'lacausers',
'connection': 'Username-Password-Authentication',
'username': username,
'password': password,
'sso': 'true',
})
login_state_url = urlh.geturl()
try:
login_page = self._download_webpage(
'https://login.linuxacademy.com/usernamepassword/login', None,
'Downloading login page', data=json.dumps(login_data).encode(),
headers={
'Content-Type': 'application/json',
'Origin': 'https://login.linuxacademy.com',
'Referer': login_state_url,
})
except ExtractorError as e:
if isinstance(e.cause, compat_HTTPError) and e.cause.code == 401:
error = self._parse_json(e.cause.read(), None)
message = error.get('description') or error['code']
raise ExtractorError(
'%s said: %s' % (self.IE_NAME, message), expected=True)
raise
callback_page, urlh = self._download_webpage_handle(
'https://login.linuxacademy.com/login/callback', None,
'Downloading callback page',
data=urlencode_postdata(self._hidden_inputs(login_page)),
headers={
'Content-Type': 'application/x-www-form-urlencoded',
'Origin': 'https://login.linuxacademy.com',
'Referer': login_state_url,
})
access_token = self._search_regex(
r'access_token=([^=&]+)', urlh.geturl(),
'access token', default=None)
if not access_token:
access_token = self._parse_json(
self._search_regex(
r'authorizationResponse\s*=\s*({.+?})\s*;', callback_page,
'authorization response'), None,
transform_source=js_to_json)['response']['access_token']
self._download_webpage(
'https://linuxacademy.com/cp/login/tokenValidateLogin/token/%s'
% access_token, None, 'Downloading token validation page')
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
chapter_id, lecture_id, course_id = mobj.group('chapter_id', 'lesson_id', 'course_id')
item_id = course_id if course_id else '%s-%s' % (chapter_id, lecture_id)
webpage = self._download_webpage(url, item_id)
# course path
if course_id:
module = self._parse_json(
self._search_regex(
r'window\.module\s*=\s*({.+?})\s*;', webpage, 'module'),
item_id)
entries = []
chapter_number = None
chapter = None
chapter_id = None
for item in module['items']:
if not isinstance(item, dict):
continue
def type_field(key):
return (try_get(item, lambda x: x['type'][key], compat_str) or '').lower()
type_fields = (type_field('name'), type_field('slug'))
# Move to next module section
if 'section' in type_fields:
chapter = item.get('course_name')
chapter_id = item.get('course_module')
chapter_number = 1 if not chapter_number else chapter_number + 1
continue
# Skip non-lessons
if 'lesson' not in type_fields:
continue
lesson_url = urljoin(url, item.get('url'))
if not lesson_url:
continue
title = item.get('title') or item.get('lesson_name')
description = item.get('md_desc') or clean_html(item.get('description')) or clean_html(item.get('text'))
entries.append({
'_type': 'url_transparent',
'url': lesson_url,
'ie_key': LinuxAcademyIE.ie_key(),
'title': title,
'description': description,
'timestamp': unified_timestamp(item.get('date')) or unified_timestamp(item.get('created_on')),
'duration': parse_duration(item.get('duration')),
'chapter': chapter,
'chapter_id': chapter_id,
'chapter_number': chapter_number,
})
return {
'_type': 'playlist',
'entries': entries,
'id': course_id,
'title': module.get('title'),
'description': module.get('md_desc') or clean_html(module.get('desc')),
'duration': parse_duration(module.get('duration')),
}
# single video path
m3u8_url = self._parse_json(
self._search_regex(
r'player\.playlist\s*=\s*(\[.+?\])\s*;', webpage, 'playlist'),
item_id)[0]['file']
formats = self._extract_m3u8_formats(
m3u8_url, item_id, 'mp4', entry_protocol='m3u8_native',
m3u8_id='hls')
self._sort_formats(formats)
info = {
'id': item_id,
'formats': formats,
}
lesson = self._parse_json(
self._search_regex(
(r'window\.lesson\s*=\s*({.+?})\s*;',
r'player\.lesson\s*=\s*({.+?})\s*;'),
webpage, 'lesson', default='{}'), item_id, fatal=False)
if lesson:
info.update({
'title': lesson.get('lesson_name'),
'description': lesson.get('md_desc') or clean_html(lesson.get('desc')),
'timestamp': unified_timestamp(lesson.get('date')) or unified_timestamp(lesson.get('created_on')),
'duration': parse_duration(lesson.get('duration')),
})
if not info.get('title'):
info['title'] = self._search_regex(
(r'>Lecture\s*:\s*(?P<value>[^<]+)',
r'lessonName\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1'), webpage,
'title', group='value')
return info
|
