commit 659e93fcf5c0480ac461cda412335cecf6a5595f
parent c9a0ea6e51eff28b9a383a47215870fd5875fc3e
Author: Sergey M․ <dstftw@gmail.com>
Date:   Sun, 17 Feb 2019 07:12:10 +0700

[linuxacademy] Add extractor (closes #12207)

Diffstat:
Myoutube_dl/extractor/extractors.py | 1+
Ayoutube_dl/extractor/linuxacademy.py | 174+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 175 insertions(+), 0 deletions(-)

diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py @@ -593,6 +593,7 @@ from .linkedin import ( LinkedInLearningIE, LinkedInLearningCourseIE, ) +from .linuxacademy import LinuxAcademyIE from .litv import LiTVIE from .liveleak import ( LiveLeakIE, diff --git a/youtube_dl/extractor/linuxacademy.py b/youtube_dl/extractor/linuxacademy.py @@ -0,0 +1,174 @@ +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 ( + ExtractorError, + orderedSet, + unescapeHTML, + 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/1498/lesson/2/module/154', + 'info_dict': { + 'id': '1498-2', + 'ext': 'mp4', + 'title': "Introduction to the Practitioner's Brief", + }, + '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': 'md5:039db7e60e4aac9cf43630e0a75fa834', + }, + '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', + '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 = compat_str(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=([^=&]+)', compat_str(urlh.geturl()), + '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: + entries = [ + self.url_result( + urljoin(url, lesson_url), ie=LinuxAcademyIE.ie_key()) + for lesson_url in orderedSet(re.findall( + r'<a[^>]+\bhref=["\'](/cp/courses/lesson/course/\d+/lesson/\d+/module/\d+)', + webpage))] + title = unescapeHTML(self._html_search_regex( + (r'class=["\']course-title["\'][^>]*>(?P<value>[^<]+)', + r'var\s+title\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1'), + webpage, 'title', default=None, group='value')) + description = unescapeHTML(self._html_search_regex( + r'var\s+description\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1', + webpage, 'description', default=None, group='value')) + return self.playlist_result(entries, course_id, title, description) + + # single video path + info = self._extract_jwplayer_data( + webpage, item_id, require_title=False, m3u8_id='hls',) + title = self._search_regex( + (r'>Lecture\s*:\s*(?P<value>[^<]+)', + r'lessonName\s*=\s*(["\'])(?P<value>(?:(?!\1).)+)\1'), webpage, + 'title', group='value') + info.update({ + 'id': item_id, + 'title': title, + }) + return info