Extend GObject based introspectable API to libzypp
an invention by zbenjamin
Updated about 2 years ago. 5 hacker ♥️. 2 followers.

Project Description

Currently we are in a situation with libzypp where we have a C++ based and hard to use API. Due to the nature of C++ it's basically impossible to use it from other languages like Rust or even Python.

In the last hackweek I layed the grounds for calling into libzypp via GLib, so I'm going to improve on that trying to wrap the legacy reports into a new style report API and maybe expose more functionality.

Goal for this Hackweek

  • Wrap new C++ event API in GLib-C
  • Catch and forward legacy reports via said API
  • Expose more functionality as we go

I already started to look into it, development will be done here: https://github.com/bzeller/libzypp/tree/zyppng-api

Resources

Looking for hackers with the skills:

zypper gobject c c++ introspection scriptability async

This project is part of:

Hack Week 22 Hack Week 23

Activity

  • about 2 years ago: jmodak liked this project.
  • over 3 years ago: cdywan liked this project.
  • over 3 years ago: j_renner liked this project.
  • over 3 years ago: shunghsiyu liked this project.
  • over 3 years ago: mvidner liked this project.
  • over 3 years ago: zbenjamin started this project.
  • over 3 years ago: zbenjamin added keyword "zypper" to this project.
  • over 3 years ago: zbenjamin added keyword "gobject" to this project.
  • over 3 years ago: zbenjamin added keyword "c" to this project.
  • over 3 years ago: zbenjamin added keyword "c++" to this project.
  • over 3 years ago: zbenjamin added keyword "introspection" to this project.
  • over 3 years ago: zbenjamin added keyword "scriptability" to this project.
  • over 3 years ago: zbenjamin added keyword "async" to this project.
  • over 3 years ago: zbenjamin originated this project.


    • Comments

    • zbenjamin
      over 3 years ago by zbenjamin | Reply

      So during the hackweek I managed to set up a very basic GObject based API that is able to initialize libzypp, list the names of all currenty known repositories and use the new async libzypp API to download a file. This is a good start and we should be able to build on it.

      You can see the resulting python script that is controlling libzypp here

    Similar Projects

    File search subcommand for zypper by mook_work

    Description

    Zypper currently only supports searching for files in a few pre-defined prefixes (/usr/bin, /usr/sbin, etc.) via using rpm provides. This means that it is difficult to find files that are not in the explicit list.

    Doing this in zypper itself seems difficult.

    Goals

    Create a zypper subcommand (plugin) that can download file lists as needed to search for file contents. As a stretch goal, have a secondary subcommand that can list files in packages regardless of whether they are already installed.

    At this point, making the resulting code usable as part of zypper itself is not a goal, as it would probably take more time than available.

    Resources

    Upstream issue: https://github.com/openSUSE/zypper/issues/469

    Stretch goal: https://github.com/openSUSE/zypper/issues/164

    Subcommands: https://manpages.opensuse.org/Tumbleweed/zypper/zypper.8.en.html#SUBCOMMANDS

    Smart lighting with Pico 2 by jmodak

    Description

    I am trying to create a smart-lighting project with a Raspberry Pi Pico that reacts to a movie's visuals and audio that involves combining two distinct functions: ambient screen lighting(visual response) and sound-reactive lighting(audio response)

    Goals

    • Visuals: Capturing the screen's colour requires an external device to analyse screen content and send colour data to the MCU via serial communication.
    • Audio: A sound sensor module connected directly to the Pico that can detect sound volume.
    • Pico 2W: The MCU receives data fro, both inputs and controls an LED strip.

    Resources

    • Raspberry Pi Pico 2 W
    • RGB LED strip
    • Sound detecting sensor
    • Power supply
    • breadboard and wires

    Improve the picotm Transaction Manager by tdz

    Picotm is a system-level transaction manager. It provides transactional semantics to low-level C operations, such as

    • memory access,
    • modifying data structures,
    • (some) file I/O, and
    • common interfaces from the C Standard Library and POSIX.

    Picotm also handles error detection and recovery for all it's functionality. It's fully modular, so new functionality can be added.

    For the Hackweek, I want to dedicate some time to picotm. I want to finish some of the refactoring work that I have been working on. If there's time left, I'd like to investigate two-phase commits and how to support them in picotm.

    Picotm is available at http://picotm.org/.

    pudc - A PID 1 process that barks to the internet by mssola

    Description

    As a fun exercise in order to dig deeper into the Linux kernel, its interfaces, the RISC-V architecture, and all the dragons in between; I'm building a blog site cooked like this:

    • The backend is written in a mixture of C and RISC-V assembly.
    • The backend is actually PID1 (for real, not within a container).
    • We poll and parse incoming HTTP requests ourselves.
    • The frontend is a mere HTML page with htmx.

    The project is meant to be Linux-specific, so I'm going to use io_uring, pidfs, namespaces, and Linux-specific features in order to drive all of this.

    I'm open for suggestions and so on, but this is meant to be a solo project, as this is more of a learning exercise for me than anything else.

    Goals

    • Have a better understanding of different Linux features from user space down to the kernel internals.
    • Most importantly: have fun.

    Resources

    x64id: An x86/x64 instruction disassembler by m.crivellari

    Description

    This is an old side project. An x86/x64 machine code decoder. It is useful to get instructions' length and identify each of its fields.

    Example:

    C7 85 68 FF FF FF 00 00 00 00

    This is the instruction:

    MOV DWORD PTR SS:[LOCAL.38],0

    What follows are some of the information collected by the disassembler, based on the specific instruction:

    RAW bytes (hex): C7 85 68 FF FF FF 00 00 00 00
Instr. length: 10
Print instruction fields:
        Located Prefixes 0:

        OP: 0xC7
        mod_reg_rm: 0x85
        disp (4): 0xFFFFFF68
        Iimm: 0x0

    Lacks the mnemonic representation: from the previous machine code is not able to produce the "MOV..." instruction, for example.

    Goals

    The goal is almost easy: partially implement the mnemonic representation. I have already started during the weekend, likely tomorrow I will push the branch!

    Resources

    Progress

    Let's consider this example:

    [...other bytes...] 43 89 44 B5 00 01 00 [...other bytes...]

    Add a machine-readable output to dmidecode by jdelvare

    Description

    There have been repeated requests for a machine-friendly dmidecode output over the last decade. During Hack Week 19, 5 years ago, I prepared the code to support alternative output formats, but didn't have the time to go further. Last year, Jiri Hnidek from Red Hat Linux posted a proof-of-concept implementation to add JSON output support. This is a fairly large pull request which needs to be carefully reviewed and tested.

    Goals

    Review Jiri's work and provide constructive feedback. Merge the code if acceptable. Evaluate the costs and benefits of using a library such as json-c.

    Port some classic game to Linux by MDoucha

    Let's pick some old classic game, reverse engineer the data formats and game rules and write an open source engine for it from scratch. Some games from 1990s are simple enough that we could have a playable prototype by the end of the week.

    Write which games you'd like to hack on in the comments. Don't forget to check e.g. on Open Source Game Clones, Github and SourceForge whether the game is ported already.

    Hack Week 25 - Master of Orion II: Battle at Antares

    Work on Master of Orion II continued with Tech Review and Colony list screens.

    Hack Week 24 - Master of Orion II: Battle at Antares & Chaos Overlords

    Work on Master of Orion II continues but we can hack more than one game. Chaos Overlords is a dystopian, lighthearted, cyberpunk turn-based strategy game originally released in 1996 for Windows 95 and Mac OS. The player takes on the role of a Chaos Overlord, attempting to control a city. Gameplay involves hiring mercenary gangs and deploying them on an 8-by-8 grid of city sectors to generate income, occupy sectors and take over the city.

    How to ~~install & play~~ observe the decompilation progress:

    • Clone the Git repository
    • A playable reimplementation does not exist yet, but when it does, it will be linked in the repository mentioned above.

    Further work needed:

    • Analyze the remaining unknown data structures, most of which are related to the AI.
    • Decompile the AI completely. The strong AI is part of the appeal of the game. It cannot be left out.
    • Reimplement the game.

    Hack Week 20, 21, 22 & 23 - Master of Orion II: Battle at Antares

    Master of Orion II is one of the greatest turn-based 4X games of the 1990s. Explore the galaxy, colonize planets, research new technologies, fight space monsters and alien empires and in the end, become the ruler of the galaxy one way or another.

    How to install & play:

    • Clone the Git repository
    • Run ./bootstrap; ./configure; make && make install
    • Copy all *.LBX files from the original Master of Orion II to the installation data directory (/usr/local/share/openorion2 by default)
    • Run openorion2

    Further work needed:

    • Analyze the rest of the original savegame format and a few remaining data files.
    • Implement most of the game. The open source engine currently supports only loading saved games from the original version and viewing the galaxy map, fleet management and list of known planets.

    Hack Week 19 - Signus: The Artifact Wars

    Signus is a Czech turn-based strategy game similar to Panzer General or Battle Isle series. Originally published in 1998 and open-sourced by the original developers in 2003.

    How to install & play:

    • Clone the Git repository
    • Run ./bootstrap; ./configure; make && make install in both signus and signus-data directories.
    • Run signus

    Further work needed:

    Smart lighting with Pico 2 by jmodak

    Description

    I am trying to create a smart-lighting project with a Raspberry Pi Pico that reacts to a movie's visuals and audio that involves combining two distinct functions: ambient screen lighting(visual response) and sound-reactive lighting(audio response)

    Goals

    • Visuals: Capturing the screen's colour requires an external device to analyse screen content and send colour data to the MCU via serial communication.
    • Audio: A sound sensor module connected directly to the Pico that can detect sound volume.
    • Pico 2W: The MCU receives data fro, both inputs and controls an LED strip.

    Resources

    • Raspberry Pi Pico 2 W
    • RGB LED strip
    • Sound detecting sensor
    • Power supply
    • breadboard and wires