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#+TITLE: jabber.el - an XMPP client for Emacs
#+DESCRIPTION: Documentation
#+startup: inlineimages

* Description
:PROPERTIES:
:CUSTOM_ID: explanation
:END:
jabber.el is an [[http://xmpp.org][XMPP]] client for Emacs.  XMPP (also known as 'Jabber') is an IETF-standard federated instant messaging protocol.

To try it out, see the [[#installation][install instructions]].

New resources
+ [[https://codeberg.org/emacs-jabber/emacs-jabber/][project page]]
+ chat: [[xmpp:emacs@salas.suchat.org?join][xmpp:emacs@salas.suchat.org?join]] (general Emacs and jabber.el talk)
+ chat: xmpp:jabber-el@conference.hmm.st?join (jabber.el developement)

Old resources
+ [[http://sourceforge.net/projects/emacs-jabber][project page]]
+ [[http://emacs-jabber.sourceforge.net][home page]]
+ [[http://www.emacswiki.org/cgi-bin/wiki/JabberEl][wiki page]]
+ mailing list:
  * http://lists.sourceforge.net/lists/listinfo/emacs-jabber-general
  * http://dir.gmane.org/gmane.emacs.jabber.general
+ chat: jabber.el@conference.jabber.se and emacs@conference.jabber.ru (Russian, English)

** Differences from [[https://github.com/legoscia/emacs-jabber][upstream]]
:PROPERTIES:
:CUSTOM_ID: upstream-differences
:END:
1. (WIP) Support for [[https://xmpp.org/extensions/xep-0363.html][XEP-0363: HTTP File Upload]]
2. Support for [[https://xmpp.org/extensions/xep-0280.html][XEP-0280: Message Carbons]]
3. Use of the deprecated =cl= library is almost completely replaced with =cl-lib=
4. Build system changed from Autotools to a =Makefile=
5. Lots of cleanup by addressing =checkdoc= and byte-compiler warnings - addition/improvement of docstrings, function/variable declarations, etc

** Requirements
:PROPERTIES:
:CUSTOM_ID: requirements
:END:
jabber.el runs on GNU Emacs 27.1 or later.

The file hexrgb.el (http://www.emacswiki.org/emacs/hexrgb.el) used to be required for the MUC nick coloring feature. However, the code depending on it has been reworked to instead use the =color.el= library, which is part of Emacs.

** Encrypted connections
:PROPERTIES:
:CUSTOM_ID: encrypted-connections
:END:
Many Jabber servers require encrypted connections, and even if yours doesn't it may be good idea.  To get an encrypted connection, the most convenient option is to use GNU Emacs 24 with GnuTLS support compiled in.  You can check whether you have that by typing:

: M-: (gnutls-available-p)

If that commands shows =t= in the echo area, then you have working GnuTLS support.  If it shows =nil= or signals an error, then you don't.

Failing that, jabber.el will use the starttls.el library, which requires that the GnuTLS command line tool "gnutls-cli" is installed.

In Debian-based distributions, "gnutls-cli" is in the "gnutls-bin" package.

The above applies to STARTTLS connections, the most common way to encrypt a Jabber connection and the only one specified in the standards.  STARTTLS connections start out unencrypted, but switch to encrypted after negotiation.  jabber.el also supports connections that are encrypted from start.  For this it uses the tls.el library, which requires either "gnutls-cli" or the OpenSSL command line tool "openssl" to be installed.

To use the latter form of encryption, customize =jabber-account-list=.

Note that only the connection from you to the server is encrypted; there is no guarantee of connections from your server to your contacts' server being encrypted.

** Usage
:PROPERTIES:
:CUSTOM_ID: usage
:END:
To connect to a Jabber server, type =C-x C-j C-c= (or equivalently =M-x jabber-connect-all=) and enter your JID.  With prefix argument, register a new account.  You can set your JID permanently with =M-x jabber-customize=.

Your roster is displayed in a buffer called *-jabber-*.  To disconnect, type =C-x C-j C-d= or =M-x jabber-disconnect=.

You may want to use the menu bar to execute Jabber commands.  To enable the Jabber menu, type =M-x jabber-menu=.

For a less terse description, read the enclosed manual.

For bug reports, help requests and other feedback, use the trackers and forums at the project page mentioned above.

** Configuration
:PROPERTIES:
:CUSTOM_ID: configuration
:END:
All available configuration options are described in the manual.  This section only serves to point out the most important ones.

To change how you are notified about incoming events, type =M-x customize-group RET jabber-alerts=.

To activate logging of all chats, set =jabber-history-enabled= to =t=.  By default, history will be saved in =~/.jabber_global_message_log=; make sure that this file has appropriate permissions.  Type =M-x customize-group RET jabber-history= for more options.

By default, jabber.el will send a confirmation when messages sent to you are delivered and displayed, and also send "contact is typing" notifications.  To change this, type =M-x customize-group RET jabber-events=, and set the three =jabber-events-confirm-*= variables to nil.

By default, jabber.el logs all MUC presence announcements to the chat buffer.  With the advent of mobile clients that frequently lose and regain network connectivity, the user left/joined messages can flood the chat.  Customize =jabber-muc-decorate-presence-patterns= to hide or deemphasize presence announcements.  See the manual for details [[info:jabber#Presence announcements][(info "(jabber) Presence announcements")]].

** File transfer
:PROPERTIES:
:CUSTOM_ID: file-transfer
:END:
This release of jabber.el contains support for file transfer.  You may need to configure some variables to make it work; see the manual for details.

** XMPP URIs
:PROPERTIES:
:CUSTOM_ID: xmpp-uris
:END:
It is possible to make various web browsers pass links starting with "xmpp:" to jabber.el.  In the ideal case, this works right after running "make install".  Otherwise, see the manual, section "XMPP URIs".

** Further reading
:PROPERTIES:
:CUSTOM_ID: further-reading
:END:
Documentation for developers is present in [[file:DEV.org][DEV.org]].

* How-to guides
:PROPERTIES:
:CUSTOM_ID: how-to-guides
:END:
See also - [[file:DEV.org#how-to-guides][how-to guides in the developer documentation]].

** How to install jabber.el
:PROPERTIES:
:CUSTOM_ID: installation
:END:
*** from MELPA
:PROPERTIES:
:CUSTOM_ID: from-melpa
:END:
1. Add the MELPA repositories to your Emacs - https://melpa.org/#/getting-started
2. Type =M-x package-install RET jabber RET=

If all goes well, =jabber.el= commands like =jabber-connect= should now be available in the =M-x= menu.

*** from source
:PROPERTIES:
:CUSTOM_ID: from-source
:END:
1. Ensure you have =git=, and Emacs 27.1 or newer

2. Clone the repository by typing the following into a terminal -
   #+BEGIN_SRC shell
   mkdir ~/emacs-jabber/
   cd ~/emacs-jabber/
   git clone https://codeberg.org/emacs-jabber/emacs-jabber
   make
   #+END_SRC

3. Add the following lines to your =init.el= -
   #+BEGIN_SRC emacs-lisp
   (add-to-list 'load-path "~/emacs-jabber/lisp/")
   (load "~/emacs-jabber/jabber-autoloads")
   #+END_SRC
   ...and, while still in your =init.el=, type =M-x eval-buffer RET=.

If all goes well, =jabber.el= commands like =jabber-connect= should now be available in the =M-x= menu.

To install the Info documentation, copy =jabber.info= to =/usr/local/info= and run ="install-info /usr/local/info/jabber.info"=.

* TODO maintenance [16%]
:PROPERTIES:
:CUSTOM_ID: maintenance
:END:
1. [ ] Satisfy =M-x checkdoc=
2. [ ] Use =rx= where regular expressions get hairy
   * [ ] =jabber-jid-username=
   * [ ] =jabber-jid-server=
   * [ ] =jabber-jid-resource=
3. [X] Remove dependency on hexrgb.el (it's not available on MELPA)
4. [ ] Migrate tests to ERT/Buttercup/etc
5. [ ] Add Windows support to developer tutorial
6. [ ] Create testing for tutorial

* Credits
:PROPERTIES:
:CUSTOM_ID: credits
:END:
** Developers
:PROPERTIES:
:CUSTOM_ID: developers
:END:
+ Tom Berger
+ Magnus Henoch
+ Kirill A. Korinskiy
+ Detlev Zundel
  - wmii support
+ Evgenii Terechkov

** Contributors
:PROPERTIES:
:CUSTOM_ID: contributors
:END:
+ Georg Lehner
  - network transport functions
+ Anthony Chaumas-Pellet
+ Jérémy Compostella
+ Mathias Dahl
  - history logging
  - watch functionality
+ Mario Domenech Goulart
  - sawfish support
  - xmessage support
+ Nolan Eakins
+ Ami Fischman
  - Chat State Notifications
+ François Fleuret
+ David Hansen
+ Adam Sjøgren
  - notifications.el support
+ Rodrigo Lazo
  - notifications.el support
  - libnotify.el support
+ Justin Kirby
+ Carl Henrik Lunde
  - network transport functions
  - activity tracking
+ Olivier Ramonat
+ Andrey Slusar
+ Valery V. Vorotyntsev
  - GMail notifications
+ Milan Zamazal
+ Xavier Maillard
+ Vitaly Mayatskikh
+ Alexander Solovyov
+ Demyan Rogozhin
  - XML console mode
+ Michael Cardell Widerkrantz
  - tmux support
+ Case Duckworth (acdw)
  - [[https://codeberg.org/emacs-jabber/emacs-jabber/pulls/2][PR #2]]
+ Hugh Daschbach (hdasch)
  - MUC presence announcements
  - Enable XEP-0280 (message carbons) by default

** Maintainers
:PROPERTIES:
:CUSTOM_ID: maintainers
:END:
+ wgreenhouse
  - 2021 resurrection
+ cngimenez
  - HTTP Upload support
  - documentation for FSM and its use in this project
+ contrapunctus
  - literate Org migration
  - Makefile (shoutout to tomasino of #team@irc.tilde.chat for the Makefile-debugging help)
  - migration back to traditional source files