Initial commit
Michael Reber
4 years ago
commit
d088d935f0
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# Downloader for Linux Academy
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This script will download courses from [Linux Academy](https://linuxacademy.com) for offline consumption.
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## Important Notice
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**Use of this script is for personal consumption of content only.** The content this script downloads is protected by copyright and must not be shared.
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#### Good uses
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* Downloading a lesson before embarking to a destination with little or no internet access.
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* Keep lessons you've completed for a personal backup.
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#### Bad uses
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* Uploading the downloaded videos to a content sharing site.
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* Sending copies of the videos to your friends and family.
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* Hoarding lessons for future consumption beyond your subscription period.
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Please exercise good judgement when using this script. The folks at Linux Academy work hard to make quality courses and you should support them by paying for a subscription if you can. You may also wish to speak with your employer to find out if they would be willing to pay for your subscription.
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## Installation
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Tested on a fresh install of Ubuntu 18.04 desktop. Your mileage may vary depending on your OS.
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sudo apt update
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sudo apt install python3 python3-pip git unzip ffmpeg
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sudo pip3 install selenium youtube-dl
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### Browser
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You will need Chrome or Firefox and its matching driver.
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#### Chrome
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Install [Google Chrome](https://www.google.com/chrome/) and download the appropriate [ChromeDriver](https://chromedriver.chromium.org/downloads) version. Make sure the `chromedriver` executable is in your PATH (e.g., `/usr/local/bin`).
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sudo dpkg -i google-chrome-stable_current_amd64.deb
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unzip chromedriver_linux64.zip
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sudo mv chromedriver /usr/local/bin
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#### Firefox
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Install Mozilla Firefox and download [geckodriver](https://github.com/mozilla/geckodriver/releases).
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sudo apt install firefox
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tar xzf geckodriver-*-linux64.tar.gz
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sudo mv geckodriver /usr/local/bin
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## Usage
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This will only work with an active Linux Academy subscription. If you do not have one, please get one [here](https://linuxacademy.com/pricing/).
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Usage:
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./linuxacademy-dl.py [-u|--username] [-p|--password] [-d|--download-dir] [-c|--cookies-file] COURSE_URL
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Options may be replaced with environment variables. Command line options take precedence.
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LADL_USERNAME, LADL_PASSWORD, LADL_DIR, LADL_COOKIES
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Examples:
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$ ./linuxacademy-dl.py -u person@exmple.com -p p@ssw0rd https://linuxacademy.com/cp/modules/view/id/346
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$ export LADL_USERNAME=person@example.com
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$ export LADL_PASSWORD=p@ssw0rd
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$ export LADL_DIR=/home/jdoe/linux-academy
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$ ./linuxacademy-dl.py https://linuxacademy.com/cp/modules/view/id/346
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The username/email and password fields are required. The cookie file will opt to `$PWD/cookies.txt` and the download directory will default to `$SCRIPT_DIR/download`, where `$SCRIPT_DIR` is the path of the `linuxacademy-dl.py` script.
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@ -0,0 +1,215 @@
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#!/usr/bin/env python3
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import os
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import sys
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import time
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import getopt
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import shutil
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import youtube_dl
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from selenium import webdriver
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from selenium.common.exceptions import NoSuchElementException
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from selenium.webdriver.common.keys import Keys
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def usage(error=0, msg=None):
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if msg:
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print(msg)
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print("Usage:")
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print("\t{} [-u|--username] [-p|--password] [-d|--download-dir] [-c|--cookies-file] COURSE_URL\n"
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.format(sys.argv[0]))
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print("\tOptions may be replaced with environment variables. Command line options take precedence.")
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print("\t\tLADL_USERNAME, LADL_PASSWORD, LADL_DIR, LADL_COOKIES\n")
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print("Examples:")
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print("\t$ ./linuxacademy-dl.py -u person@exmple.com -p p@ssw0rd https://linuxacademy.com/cp/modules/view/id/346\n")
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print("\t$ export LADL_USERNAME=person@example.com")
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print("\t$ export LADL_PASSWORD=p@ssw0rd")
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print("\t$ export LADL_DIR=/home/jdoe/linux-academy")
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print("\t$ ./linuxacademy-dl.py https://linuxacademy.com/cp/modules/view/id/346")
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exit(error)
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def parse_args():
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opts = args = []
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username = password = download_dir = cookies_file = None
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ignore_missing_title = False
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'hu:p:d:c:',
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['help', 'username=', 'password=', 'download-dir=', 'cookies-file=',
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'ignore-missing-title'])
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except getopt.GetoptError as err:
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print(str(err))
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usage(1)
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if len(args) < 1:
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usage(1, "Missing course URL.")
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for opt, arg in opts:
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if opt in ('-h', '--help'):
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usage()
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elif opt in ('-u', '--username'):
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username = arg
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elif opt in ('-p', '--password'):
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password = arg
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elif opt in ('-d', '--download-dir'):
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download_dir = arg
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elif opt in ('-c', '--cookies-file'):
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cookies_file = arg
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elif opt == '--ignore-missing-title':
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ignore_missing_title = True
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if username is None:
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username = os.environ.get('LADL_USERNAME') or usage(1, "Missing username.")
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if password is None:
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password = os.environ.get('LADL_PASSWORD') or usage(1, "Missing password.")
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if download_dir is None:
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download_dir = os.environ.get('LADL_DIR', "{}/download".format(os.path.dirname(os.path.realpath(__file__))))
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if cookies_file is None:
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cookies_file = os.environ.get('LADL_COOKIES', "{}/cookies.txt".format(os.path.dirname(os.path.realpath(__file__))))
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course_url = args[0]
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return {
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'username': username,
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'password': password,
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'download_dir': download_dir,
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'cookies_file': cookies_file,
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'course_url': course_url,
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'ignore_missing_title': ignore_missing_title
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}
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def launch_browser(name):
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if name == 'chrome':
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options = webdriver.ChromeOptions()
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options.add_argument("--headless")
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options.add_argument("--window-size=1920,1080")
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driver = webdriver.Chrome(options=options)
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else:
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options = webdriver.FirefoxOptions()
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options.add_argument("--headless")
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options.add_argument("--window-size=1920,1080")
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driver = webdriver.Firefox(options=options)
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driver.get("https://linuxacademy.com/")
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return driver
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def la_login(driver, args):
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link = driver.find_element_by_partial_link_text('Log In')
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link.click()
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time.sleep(5)
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user = driver.find_element_by_name('username')
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user.send_keys(args['username'])
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password = driver.find_element_by_name('password')
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password.send_keys(args['password'])
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password.send_keys(Keys.RETURN)
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time.sleep(10)
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try:
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driver.find_element_by_id('navigationUsername')
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print("Login success.")
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except NoSuchElementException:
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print("Login failed. Exiting.")
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exit(1)
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def load_course(driver, args):
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course_title = None
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driver.get(args['course_url'])
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time.sleep(5)
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try:
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course_title = driver.find_elements_by_class_name('course-title')[0].text
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except IndexError:
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if args['ignore_missing_title']:
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course_title = "COURSE-ID-{}".format(args['course_url'].split('/')[-1])
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else:
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print("Error: Could not find course title. Try running with --ignore-missing-title.")
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exit(3)
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return course_title
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def fetch_video_list(driver):
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lessons = driver.find_elements_by_tag_name('a')
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video_list = []
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counter = 0
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for lesson in lessons:
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try:
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url = lesson.get_attribute('href')
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if '/course/' in url:
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counter += 1
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video_list.append(
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{'url': url, 'counter': "{:03d}".format(counter), 'title': lesson.text.split('\n')[0]})
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except TypeError:
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pass
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return video_list
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def write_cookies(driver, file):
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cookies = open(file, 'a+')
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cookies.write("# Netscape HTTP Cookie File\n\n")
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for c in driver.get_cookies():
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expiry = c.get('expiry') if c.get('expiry') else 0
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any_domain_flag = str(c['domain'].startswith('.')).upper()
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cookie = "{}\t{}\t{}\t{}\t{}\t{}\t{}\n".format(
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c['domain'], any_domain_flag, c['path'], str(c['secure']).upper(), expiry, c['name'], c['value'])
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cookies.write(cookie)
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cookies.close()
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def download_video(driver, args, course_title, video):
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driver.get(video['url'])
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time.sleep(5)
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write_cookies(driver, args['cookies_file'])
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file_name = "{} - {}".format(video['counter'], video['title'].replace('/', '_'))
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print("Downloading: {}...".format(file_name))
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ydl_opts = {'cookiefile': args['cookies_file'], 'force_generic_extractor': True, 'quiet': True, 'no_warnings': True,
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'outtmpl': '{}/{}/{}.%(ext)s'.format(args['download_dir'], course_title, file_name),
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'restrictfilenames': True}
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with youtube_dl.YoutubeDL(ydl_opts) as ydl:
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ydl.download([video['url']])
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def main():
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args = parse_args()
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driver = None
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if shutil.which('chromedriver'):
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print("Launching Chrome...")
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driver = launch_browser('chrome')
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elif shutil.which('geckodriver'):
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print("Launching Firefox...")
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driver = launch_browser('firefox')
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else:
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print("Error: No browser driver found.")
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exit(2)
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print("Logging in...")
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la_login(driver, args)
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print("Loading course...")
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course_title = load_course(driver, args)
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print("Course title: {}".format(course_title))
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print("Fetching video list...")
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video_list = fetch_video_list(driver)
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print("Found {} video{}.".format(len(video_list), "s" if len(video_list) > 1 else ""))
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for video in video_list:
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download_video(driver, args, course_title, video)
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os.remove(args['cookies_file'])
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print("Done.")
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if __name__ == "__main__":
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main()
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