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README.md

LibreChat Backend

LibreChat is a project that aims to create a messaging app that is completely compatible to the existing e-mail infrastructure.

So, with LibreChat you get the ease of well-known messengers with the reach of e-mail. Moreover, you're indepentent from other companies or services - as your data are not related to LibreChat, you won't even add new dependecies here.

Some features at a glance

Fast by the use of Push-IMAP
Largest userbase - receivers not using LibreChat can be reached as well
Elegant and simple user interface
Distributed system
Trustworthy - can even be used for business messages
fully OpenSource and Standards based

Download

Currently, the project is in alpha state under heavy development. There is no working prototype yet - only this bunch of files and the frontends as https://github.com/r10s/messenger-android .

If you're interested in this project, you can contact me using r10s at b44t dotcom.

Build

This repository contains only the messenger backend that is used by all frontends.

The backend requires LibEtPan and SQLite - the usage at a glance on unix systems:

LibEtPan is available at https://github.com/dinhviethoa/libetpan ; for compilation, use eg. the following commands: ./autogen.sh; make; sudo make install prefix=/usr To link against LibEtPan, add libetpan-config --libs in backticks to your project.
SQLite ( http://sqlite.org/ ) is available on most systems, however, you will also need the headers, please look for packages as libsqlite3-dev. To link against SQLite, add -lsqlite3 to your project.

Information about how to build the frontends can be found in the corresponding repositories as https://github.com/r10s/messenger-android .

Coding

You're a developer and have an idea for another crazy chat, social or messaging app? We encourage you to take this source code as a base. We love to see many different messengers out there, based on existing, distributed infrastructure. But we hate to see the user's data hidden on some companies servers with undefined backgrounds.

Some hints:

Strings in function arguments or return values are usually UTF-8 encoded
Returned char*-strings must be freed using free() - we leave it up to the next level (Android, Java, iOS, Qt, ...) to use smarter strings and do not add overhead here.
Threads are implemented using POSIX threads (pthread_* functions)
For indentation we use tabs. Alignments that are not placed at the beginning of a line should be done with spaces.
For padding between funktions, classes etc. we use 2 empty lines
Source files are encoded as UTF-8 with Unix-Lineends (a simple LF, 0x0A or \n)

Please keep in mind, that your derived work must be released under a GPL-compatible licence. For details, please have a look at the file LICENSE that comes together with the source code.