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OSS Leftovers

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  • Android 8 forces FOSS apps to use Firebase for push notifications or label them as “using too much battery”

    Recently, Google imposed background limitations on the Android 8.0 (API level 26) for what apps can do while running in the background. Per this new update, Android 8 forces developers to use Firebase for their push notifications, or otherwise tell the user that the app has misbehaved. Push notifications are needed by all messaging apps such as Telegram-FOSS, riot.im, and other FOSS apps The problem here is that the Firebase Android client library is not open source. FOSS apps now cannot keep push notification features in Android 8 while also remaining 100% open source and not being stigmatized as misbehaved..

    Google official reason for putting this limitation is to improve the user experience. They state that when many Android apps and services are run simultaneously, it places a load on the system. Further if additional apps or services, run in the background, it places an additional load on the system, which could result in a poor user experience. For example, when a user is playing a game in one window while browsing the web in another window, and using a third app to play music, this could result in abrupt shut down of one of the apps, due to immense load on the system.

  • Introducing Matrix 1.0 and the Matrix.org Foundation

    Now, before you get too excited, it’s critical to understand that Matrix 1.0 is all about providing a stable, self-consistent, self-contained and secure version of the standard which anyone should be able to use to independently implement production-grade Matrix clients, servers, bots and bridges etc. It does not mean that all planned or possible features in Matrix are now specified and implemented, but that the most important core of the protocol is a well-defined stable platform for everyone to build on. On the Synapse side, our focus has been exclusively on ensuring that Synapse correctly implements Matrix 1.0, to provide a stable and secure basis for participating in Matrix without risk of room corruption or other nastinesses.

  • g2k19 Hackathon Report: Stefan Sperling on Access Points and Ghosts
  • 37th VistA Community Meeting

    Speaker, Topic / Link To Presentation [...]

  • Smarten Up Your Air Conditioning with the ESP8266

    If you’re looking for “smart” home appliances, there’s no shortage of options on the market. Even relatively low-end gadgets are jumping on the Internet of Things bandwagon these days (for better or for worse). But what if you’re not looking to purchase a brand new major appliance right now? In that case, you might be interested in seeing how [Giulio Pons] added some high-tech features to his existing air conditioner on the cheap.

    Since his AC unit had an infrared remote control, the first thing [Giulio] needed to do was come up with a way to emulate it. An easy enough project using the ESP8266 and an IR LED, especially when he found that somebody had already written a IR communications library for his particular brand of AC. From there, he could start tacking on sensors and functionality.

  • HestiaPi: A Stylish Open Hardware Thermostat

    Of course, the hardware is only half the equation. To get the HestiaPi Touch talking to all the other smart gadgets in your life, it leverages the wildly popular OpenHAB platform. As demonstrated in the video after the break, this allows you to use the HestiaPi and its mobile companion application to not only control your home’s heating and air conditioning systems, but pretty much anything else you can think of.

  • Simple Arduino Universal Remote Control

    The infrared remote control might not hold the seat of honor in the average home theater setup that it once enjoyed, but it’s not quite out to pasture yet. After all, what are you going to use to stop Netflix once the Chromecast invariably disconnects from your phone? As long as there are devices out there that will respond to commands blasted their way via an IR LED, hackers will be looking to get in on the action.

More in Tux Machines

Arc Menu Extension Now Lets You Pin Your Fave Apps to the Sidebar

If you’re a fan of the Arc menu extension for GNOME Shell you may be interested to hear that an update is on the way. A new version of the traditional-style app menu, which is particularly popular with Dash to Panel users, is currently pending approval over the GNOME Extensions website. What does it bring? Personalisation. Arc Menu replaces the full-screen app launcher in GNOME Shell with a more traditional ‘start menu’ design. It’s searchable, has bookmarks for important folders, shortcuts for key system actions, and lets you manage your session. It also lets you browse installed applications based one their category. The whole of the left-hand sidebar is dedicated to this purpose. Read more

Audiocasts/Shows: mintCast, Test and Code, LINUX Unplugged

Security: Mozilla Patch for Firefox and Getting Started with OpenSSL

  • Zero-Day Flaw In Firefox Is Getting Exploited By Hackers; Update Now!
    Mozilla has issued a warning of a zero-day flaw in Firefox browser that is currently being exploited in the wild. But the good news is that an emergency patch has been released for the same so you should update your browser now! The vulnerability was discovered by Google’s Project Zero security team...
  • Security vulnerabilities fixed in Firefox 67.0.3 and Firefox ESR 60.7.1
    A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw.
  • Getting started with OpenSSL: Cryptography basics
    This article is the first of two on cryptography basics using OpenSSL, a production-grade library and toolkit popular on Linux and other systems. (To install the most recent version of OpenSSL, see here.) OpenSSL utilities are available at the command line, and programs can call functions from the OpenSSL libraries. The sample program for this article is in C, the source language for the OpenSSL libraries. The two articles in this series cover—collectively—cryptographic hashes, digital signatures, encryption and decryption, and digital certificates. You can find the code and command-line examples in a ZIP file from my website. Let’s start with a review of the SSL in the OpenSSL name.

Python: Leading, Developing for Android and New RCs

  • Leading in the Python community
    Naomi began her career in the Classics; she earned a PhD in Latin and Ancient Greek with a minor in Indo-European Linguistics, as she says, "several decades ago." While teaching Latin at a private school, she began tinkering with computers, learning to code and to take machines apart to do upgrades and repairs. She started working with open source software in 1995 with Yggdrasil Linux and helped launch the Fort Wayne, Indiana, Linux User Group.
  • What’s the Best Language for Android App Developers: Java or Python?
    Few things can be so divisive among developers as their choice of programming languages. Developers will promote one over the other, often touting their chosen language’s purity, speed, elegance, efficiency, power, portability, compatibility or any number of other features. Android app developers are no exception, with many developers divided between using Java or Python to develop their applications. Let’s look at these two languages and see which is best for Android app developers.
  • Python 3.7.4rc1 and 3.6.9rc1 are now available
    Python 3.7.4rc1 and 3.6.9rc1 are now available. 3.7.4rc1 is the release preview of the next maintenance release of Python 3.7, the latest feature release of Python. 3.6.9rc1 is the release preview of the first security-fix release of Python 3.6. Assuming no critical problems are found prior to 2019-06-28, no code changes are planned between these release candidates and the final releases. These release candidates are intended to give you the opportunity to test the new security and bug fixes in 3.7.4 and security fixes in 3.6.9. We strongly encourage you to test your projects and report issues found to bugs.python.org as soon as possible. Please keep in mind that these are preview releases and, thus, their use is not recommended for production environments.