Google Summer of Code 2023

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Participation

The XSF has plans to be a mentoring organization for Google Summer of Code 2023. This is an early attempt to ensure good planning and enough time for the application process. Remind: The XSF has not yet applied nor being accepted.

XMPP oriented projects should still add project ideas to the below list.

Organization: Edward offered to help the organization. Please reach out to the GSoC chat if you want to support as well of plan to participate in any way: GSoC chat room gsoc@muc.xmpp.org

Dates

More information on the dates are listed on their GSoC Website

Otherwise, all other info is on GSoC page

Find their FAQ.

Overview

Date Meeting Participants
2023 Kick-off Meeting emus & supporters
2023 Organization Application preparation emus & XSF members
2023-02-07 Org Application Deadline emus
2023-04-04 Projects Application Mentors

Overview

XMPP is an Internet protocol used in many fields, such as the Internet of Things, chat applications, voice and video calls, etc. It's what commercial client alike Google Talk, Whatsapp or Google Hangouts uses as an XMPP-derivate of the protocol uses or in some aspects of XMPP internally, and as well as end-users it's used extensively by enterprises and governments but of course also the open variant propagated and standardised by the XSF.

The XSF is (for GSoC) an umbrella organization for various XMPP-related projects. As such, there's two tiers involved - the XSF itself, which is responsible for gatherding mentors to submit ideas, choosing students etc., and the software projects themselves that then mentor students. Anyone interested in participating in GSoC as an XSF student can join the gsoc@muc.xmpp.org MUC room, where various mentors will be available to answer questions and generally help. Although each idea below lists a possible mentor, this group chat (MUC) is the best place to start.

As there are several disparate projects here, there's variety across several codebases in different languages and with significantly different aims, so take a look through all the ideas - there should be something for everyone here :)

How to get started?

  • Read the Google Summer of Code 2023 guidelines!
  • Review the projects below and inform yourself if that could be of interested for you Link
  • Reach out the projects contact, tell about yourself and why you are interested (see project section)
  • Join our GSoC group chat channel via XMPP (you can reach out via mail of course as well, but we really recommend to also use the technology) Link
  • Continue to discuss teaser tasks with the project contact Link
  • If everything is fine, start preparing a proposal and if reviewed submit the application Link

Join the group chat!

Use a regular XMPP client and join the GSoC chat room gsoc@muc.xmpp.org.

How to join:

Teaser Tasks

  • Submit small patches: To assess students applying to GSoC for XSF projects we want them to have submitted some small patches to one of the XMPP projects in advance, as this gives us an idea of their general ability to interact with the projects and submit patches. These should only be an afternoon or two's work, and should not be onerous!
  • Solve the XMPP quiz: To be announced.

A list of teaser tasks is given in the Project Ideas overview, but please join the chat rooms for the respective projects and discuss them there, where mentors will be able to help you and know what you're up to. There are different teasers for different codebases, and more teasers will be appearing here over the next few days.

Student Proposal

In addition to writing a proposal, engagement with the actual projects before the application is very important. Showing motivation by taking interest in the project and communicating with the mentors is very advantageous. Solving a typical small problem can show that a student is serious with their plans.

Of course, a good proposal is fine, too. We would be interested in the motivation behind the application. Additionally, the student's background, the possible experiences and preferred technologies, the outcome of a preliminary research on the protocol and codesbases the student might work on. Furthermore, their own perspective on how the collaboration and organization through the Google Summer of Code with the mentors should look like and a review of which possible problems may be faced are also helpful.

Furthermore we recommend a bit of research on online guides to write a proposal or motivational letter. The official guidelines of the Google Summer of Code 2023 are highly recommended to read first.

Project Ideas (TO BE UPDATED FOR 2023)

Dino

Website: https://dino.im/
Source Code: https://github.com/dino/dino
Description: Dino is a modern open-source chat client for the desktop. It focuses on providing a clean and reliable Jabber/XMPP experience while having your privacy in mind.
Project Contact: larma, fiaxh
Relevant readings: Vala Tutorial
Teaser Tasks: Good first issues
Chat: chat@dino.im or Webchat

Note: Feel invited to combine small projects into a large project, if you want to do a large project. Combinations of the 3 projects related to file transfers are a particular fit for a large project.

Inline link preview

Brief explanation: Add support for attaching and displaying link metadata.
Involved Technologies: Vala, XMPP, HTML, OpenGraph
Relevant readings: OpenGraph protocol
Project size: Small (175h)
Difficulty: Easy
Deliverables / Expected Results:

  • User interface widget to display metadata, suitable for preview image, title, abstract and the original url/domain.
  • Automatic generation of metadata, working with major websites. This should be done in a generic fashion, not targeting a specific website
  • Design or reuse a specification for sending metadata with XMPP messages

Stateless file sharing

Brief explanation: Attach metadata to HTTP file transfers and display it.
Involved Technologies: Vala, XMPP, HTTP
Relevant readings: XEP-0446, XEP-0447, XEP-0363
Project size: Small (175h)
Difficulty: Medium
Deliverables / Expected Results:

  • Use Stateless file sharing (SFS) for outgoing HTTP file transfers.
  • Send minimal thumbnails (less than 16 pixels) for image file transfers
  • Display minimal thumbnails blurred on incoming file transfers (before file is fetched).

On-demand p2p file sharing

Brief explanation: Allow for on-demand multi-party peer-to-peer file transfers.
Involved Technologies: Vala, XMPP, Jingle
Relevant readings: XEP-0447, XEP-0234
Project size: Small (175h)
Difficulty: Medium
Important Note: This project can only be achieved by first implementing the "Stateless file sharing" project.
Deliverables / Expected Results:

WebRTC file transfer

Brief explanation: Add support for WebRTC-based file transfers using WebRTC data channels for web compatibility and improved NAT traversal.
Involved Technologies: Vala, XMPP, Jingle, WebRTC
Relevant readings: XEP-0343, XEP-0234
Project size: Small (175h)
Difficulty: Hard
Deliverables / Expected Results:

Rich message support

Brief explanation: Add support for creating and displaying rich test messages.
Involved Technologies: Vala, XMPP, GTK+, Pango
Relevant readings: XEP-0393, XEP-0394, XEP-0372
Project size: Small (175h)
Difficulty: Easy
Deliverables / Expected Results:

  • Add rich text features to Dino's chat input box using buttons and well-known keyboard shortcuts for bold, italic, strikethrough, monospace, lists, blockquotes, code blocks, links and mentions.
  • Allow users to activate Markdown input, which is instantly converted to rich text during input.
  • Send rich text messages using Message Markup and References as well as a fallback using Message Styling
  • Apply markup to messages in conversation history via Pango Attributes

Psi

Website: https://psi-im.org/
Source Code: https://github.com/psi-im/psi
Description: An XMPP client for advanced users.
Project Contact: Sergei Ilinykh, Tehnick (Boris Pek), VitoZz (Vitaly Tonkacheyevb)
Relevant readings: [1]
Teaser Tasks: [2]
Chat: psi-dev@conference.jabber.ru or Webchat

Mediated Information Exchange (MIX)

Brief explanation: Add support for Mediated Information Exchange (MIX).
Involved Technologies: Qt, C++
Relevant readings: XEP-0369: Mediated Information eXchange (MIX)
Size: large
Difficulty: Hard
Deliverables / Expected Results:

  • A set of classes in iris library to support MIX extensions.
  • A MIX management component in Psi itself similar to one implemented for MUC.
  • A Working UI (probably some rework of the current MUC UI to make it compatible with MIX)
  • The solution has to be tested with popular XMPP servers

QML UI

Brief explanation: A modern looking UI for both (group-)chat and roster Involved Technologies: Qt, QML, JavaScript, C++
Relevant readings: https://en.wikipedia.org/wiki/QML
Size: large
Difficulty: Medium
Deliverables / Expected Results:

  • It's a huge task, so expected an implementation of standalone QML/*cross-platform* UI with clear and well-documented API interfaces.
  • The UI may be backed by some mocked C++ code where Psi code should be taken as a guidance. This is perfectly fine to borrow design/API ideas from other clients too. This mocked code is mostly needed to initiate some UI actions unrelated to self user (e.g. some contact changes their status) and catch/log UI events.
  • It's assumed the UI will be used not just with Psi. So the branded parts preferably should be kept aside and instead set via API.
  • The UI should provide next functions: model/view-based chat/group-chat, roster, avatars, statuses, recent (group-)chats, fetching unlimited message log, contact list (with groups/tags), contacts management, own status management.
  • The UI should be adaptable to screen size (read: there plans to use it for mobile platforms too).
  • The UI should be compilable at least on Linux, MacOS and Windows.

Message Archive Management

Brief explanation: Support for server-based message archive Involved Technologies: Qt, C++
Relevant readings: https://xmpp.org/extensions/xep-0313.html
Size: small
Difficulty: Medium
Deliverables / Expected Results:

  • Implement MAM in iris (https://github.com/psi-im/iris) library.
  • Integrate the new message storage with current local history management in Psi (which is based on iris).
  • Keep the ability to use local history (for cases when server MAM is unavailable or undesired) and combine both sources seamlessly
  • If it's necessary update Psi UI to make it work with the new mechanism.
  • Keep in mind related to MAM XEPs to not make something completely incompatible.

PGPainless

PGPainless is a Java OpenPGP library. While it is not strictly an XMPP related project, it has it has its origins in GSoC and the XMPP community, since it was created as a Summer of Code project in 2018.

Interested students are encouraged to join gsoc@muc.xmpp.org

OpenPGP Message Parsing using Parser Generator

Size: Small
Brief explanation: Enforce OpenPGP message syntax during parsing by using a Parser Generator such as JavaCC
Involved Technologies: Java, Bouncy Castle, EBNF
Relevant readings: RFC4880: OpenPGP Message Format
Deliverables / Expected Results:

  • In the OpenPGP Interoperability Test Suite PGPainless currently fails some tests related to unusual message structures.
  • The project has the goal to improve PGPainless' score in this category by rewriting/improving the libraries' rather naive message parser logic.
  • An ideal implementation would enforce the OpenPGP message structure syntax defined as EBNF. This could be done by using a parser generator such as JavaCC.

Converse.js

Converse is a web-based XMPP client. It has different modes, allowing it to be integrated into existing websites, used as a webchat for a specific chatroom, or used as a full-fledged XMPP client on its own. There is also an electron-based version available.

Support Audio/Video calls in Converse

Size: small (175hrs)
Brief explanation: Add support for Audio/Video Communication via Jingle.
Involved Technologies: JavaScript, WebRTC, Jingle
Relevant readings: XEP-0166, XEP-0167, XEP-0353
Deliverables / Expected Results:

  • The goal is to create a Converse plugin that adds the ability to make one-on-one audio/video calls from Converse
  • The audio/video calls must be compatible with other XMPP clients such as Conversations
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