Dusty Wilson
and 1 contributors

NAME

Net::SloppyXMPP - A rather sloppy XMPP client implementation

DESCRIPTION

In an attempt to drastically reduce external dependencies, this module doesn't use a lot of them. Therefore, it doesn't do a whole lot via proper standards.

The XML parser is a combination of a mess of regex hacks and some processing through XML::Simple.

XML namespaces aren't really used properly.

There's no guarantee that this will work for anything.

Reinventing the wheel? You betcha. Unfortunately, neither Net::XMPP nor AnyEvent::XMPP would work in the fashion I needed. It doesn't help that Net::XMPP is unmaintained (or so it seems) these days. AnyEvent::XMPP requires LibIDN, which has been too big of an issue to deal with where I'm needing to implement an XMPP client.

SASL and TLS are both available, but not required. Just disable one or both of them if you don't want or can't use them. SASL features are provided via Authen::SASL and are only used if usesasl is true (it's true unless you specifically set it to false). TLS features are provided via Net::SSLeay and are only used if usetls is true (it's true unless you specifically set it to false).

One of the goals of this implementation is to ensure that it will work on as many platforms as possible, especially those that can't use a few of the dependencies of the other XMPP modules available for Perl.

WHO SHOULD USE THIS?

Probably no one. It's sloppy. It's untested. It's incomplete. But if the description above didn't scare you away, you might be a good candidate. You'll probably need to track down some bugs in it before you can really use it. If you're using Openfire 3.6.2 as an XMPP server, you might have good luck in using it straight away. If you're using Google's XMPP service, you won't have any luck (yet).

If you really want to use this module, but it doesn't work for you, please post your troubles on the CPAN bug tracker. If you need support for additional XMPP servers, I'd love to add such support. To do that, I might need access to the XMPP server with a test username/password. I'd really rather not setup loads of XMPP servers for testing purposes. Providing me with a test account will help the process of adding additional XMPP servers.

But like I said, maybe no one should be using this module. Other seemingly good XMPP modules are available on CPAN. Some examples: Net::XMPP and AnyEvent::XMPP.

EXAMPLE

  use Net::SloppyXMPP;

  my $xmpp = Net::SloppyXMPP->new(
    debug => 1,
    tickdelay => 1,
    #usetls => 0, # set this if you don't want TLS
    #usesasl => 0, # set this if you don't want SASL
    domain => 'yourdomain.xyz',
    username => 'yourusername',
    password => 'yourpassword',
    resource => 'yourresourcename', # or don't set and a default will be supplied
    initialpresence => 'available', # available, busy, dnd, defaults to available
    initialstatus => 'I am alive!', # defaults to ''
    message_callback => \&messageCallback,
  );
  die qq(XMPP didn't create.\n) unless $xmpp;

  sub messageCallback
  {
    my $xmpp = shift;
    my $data = shift;
    print Dumper($data);
  }

  my $xmppConnect = $xmpp->connect;
  die qq(XMPP didn't connect.\n) unless $xmppConnect;

  # if you want SloppyXMPP to control your main loop
  $xmpp->run(\&tick);
  sub tick
  {
    # do stuff in here that needs to happen each loop (use as a main loop)
    my $xmpp = shift; # if you need it, same object as the $xmpp you already used
    print "This runs every $xmpp->{tickdelay} seconds.\n";
  }

  # or if you want to run your own loop, do this:
  sub loop
  {
    print "Doing something useful here...\n";

    # ... more useful code ...

    $xmpp->tick; # runs the SloppyXMPP loop once

    # ... and more useful code ...
  }
  loop();

ABSTRACT

Not complete, just like the module itself. Feel free to read the source code to figure out how to use it. A bit of help is sprinkled about the page below.

WARNING: Most of these functions are internal functions not to be used outside of the module. If you use them yourself, I don't want to get bug reports about it. If it just says "Used internally" but doesn't say you can't use it, you're probably okay to use it. If it says something like "Don't use it yourself", don't use it. You're likely to upset the delicate balance of nature and might cause mass casualties, famine, hurricanes, tornadoes, floods, or drought. You've been warned.

If you've avoided my warning above and are using a function that you really have no business using, let me know (see my contact info at the end of this doc) so I can create a more proper interface into whatever it is that you're doing improperly.

new

  my $xmpp = Net::SloppyXMPP->new(
    someoption => "somevalue",       # see below
    anotheroption => "anothervalue", #   for the options
  );
usetls

Specify the use of TLS. TLS requires Net::SSLeay, but it'll only be loaded if this is true. Your XMPP server must support TLS. Default true if not set.

usesasl

Specify the use of SASL for authentication. SASL requires Authen::SASL and MIME::Base64, but they'll only be loaded if this is true. Your XMPP server must support SASL. Default true if not set.

usesrv

Specify the use of SRV records to determine XMPP host/port based on domain. This requires Megagram::ResolveSRV, but it'll only be loaded if this is true. If your domain doesn't use _xmpp-client._tcp.yourdomain.com SRV records, this will fail. Default true if not set.

domain

The domain. If your XMPP user is fred@yourdomain.xyz, the domain is yourdomain.xyz. A required variable.

host

The IP/domain of the XMPP server to connect to. You can use either "yourdomain.xyz" or "yourdomain.xyz:5222" formats. If you're using SRV records (see usesrv above), don't set this. A required variable, but only if usesrv is false.

port

The port of the XMPP server to connect to. If you've set the port number along with the host (see host above), don't set this. If you're using SRV records (see usesrv above), don't set this. A required variable, but only if usesrv is false.

username

The username. If your XMPP user is fred@yourdomain.xyz, the username is fred. A required variable.

password

The password. This probably doesn't need introduction. A required variable.

resource

The resource. If you don't know what this is, you probably don't need to set it. In the JID fred@yourdomain.xyz/Office, the resource is Office. A default is provided if you don't set it.

message_callback

The function or code that you want to run on each incoming message. Must be a coderef. A default (NOOP with complaint) provided if you don't set it.

debug

The debug level. The higher the number, the more debug messages you'll get. If you don't want to get any messages, set it to -1. Default is 0.

tickdelay

The delay in the run loop, in floating-point seconds. If you don't use run (see below), you won't need this. Default is 0.5 seconds.

initialpresence

Your initial presence on the XMPP server upon connection. Set it to any valid presence value (such as available, dnd, away). Can be changed at any time while connected via the presence function (see below). Default is available.

initialstatus

Your initial status message on the XMPP server upon connection. Set it to some string. Can be changed at any time while connected via the presence function (see below). Default is empty string.

socket_write_len

If you don't know what this is for, don't mess with it. Sets the amount to write to the socket at one time. Default is 4096.

socket_read_len

If you don't know what this is for, don't mess with it. Sets the amount to read from the socket at one time. Default is 4096.

pingfreq

If you don't know what this is for, don't mess with it. Sets the number of seconds between automatic pings. Set it to 0 if you wish to disable it. Default is 300 seconds (5 minutes).

debug

Used internally. Don't use it yourself. Debug messages are written to this function. Debug messages only appear (via STDERR) when ($debugvalue <= $xmpp-{debug}).

connect

Initiates the XMPP connection.

sendhandshake

Used internally. Don't use it yourself. Sends the XMPP handshake.

check_socket_connected

Used internally. Checks to see if the socket is currently connected. Doesn't test to see if the socket is TLS or not.

disconnect

Disconnects the socket. Also shuts down the TLS connection cleanly.

ready

Used internally. Determines if the XMPP socket is ready to be used. It's ready after authentication was successful, the resource is bound, and the session has started.

use_tls

Used internally. Determines whether the socket is TLS'ified or not.

setup_tls

Used internally. Don't use it yourself. Sets up the TLS connection over the socket.

run

  $xmpp->run(\&mycallbackfunction);
  # .. or ..
  $xmpp->run(sub {
    my $xmpp = shift;
    print "This is my callback function!\n";
  });

Starts the SloppyXMPP-controlled main loop. If you don't want SloppyXMPP to control your loop, use tick instead. Runs tick once, runs your callback function, and then sleeps for $xmpp->{tickdelay} seconds.

tick

Runs the SloppyXMPP loop once. Don't use this if you're using run.

message

  $xmpp->message({
    to => 'fred@fakedomain.xyz',
    message => 'This is a message.',
  });

  $xmpp->message({
    to => [
      'fred@fakedomain.xyz',
      'jane@fakedomain.xyz',
    ],
    message => 'This is a message.',
  });

Sends a message to an XMPP user. If to is an arrayref, it will send to multiple parties.

write

Used internally. Don't use it yourself. Writes raw data to the socket write queue.

read

Used internally. Don't use it yourself. Reads data from the read queue. Used by the event manager.

unread

Used internally. Don't use it yourself. If read was used, but the data can't be used, put it back in the queue.

readable

Used internally. Don't use it yourself. Determines if there is any data to be read in the read queue.

socket_write

Used internally. Don't use it yourself. Writes data from the socket write queue to the socket.

socket_read

Used internally. Don't use it yourself. Reads data from the socket and pushes it into the socket read buffer to be processed by process_read_buffer.

process_read_buffer

Used internally. Don't use it yourself. Processes data in the socket read buffer and pushes it into the read queue to be processed by process_read_queue.

process_read_queue

Used internally. Don't use it yourself. Handles events, errors, etc.

authenticated

Used internally. Returns true if this connection has been authenticated successfully.

authenticate

Used internally. Don't use it yourself. Begins the authentication process.

saslchallenge

Used internally. Don't use it yourself. Handles the SASL challenge.

saslsuccess

Used internally. Don't use it yourself. Handles SASL challenge success.

bindresource

Used internally. Don't use it yourself. Binds this connection to a specific resource.

startsession

Used internally. Don't use it yourself. Starts the XMPP session.

presence

  $xmpp->presence('available', 'Playing music and eating chips.');

Sets your presence and status.

messagecomposingstarted

Used internally. Don't use it yourself. Event handler uses this function to handle the messagecomposingstarted event. This happens when some user starts typing a message to you. Not all XMPP clients send this notification.

messagecomposingpaused

Used internally. Don't use it yourself. Event handler uses this function to handle the messagecomposingpaused event. This happens when the person typing the message stopped typing (but didn't erase their message, send the message, or close the message window).

messagecomposingended

Used internally. Don't use it yourself. Event handler uses this function to handle the messagecomposingended event. This happens when the person typing the message quit their message (erased their message, sent the message, or closed the message window).

messagereceived

Used internally. Don't use it yourself. Event handler uses this function to handle the messagereceived event. This happens when a message is received from another XMPP user.

roster

  my $roster = $xmpp->roster;

Returns an arrayref that contains the roster.

rosterfetch

Used internally. Don't use it yourself. Requests the roster from the XMPP server. Only has to happen once at connection time.

rosterreceived

Used internally. Don't use it yourself. The roster arrived from the XMPP server. This populates the proper variable that contains the roster arrayref. Access this data via roster (see above).

ping

Used internally. Don't use it yourself. Sends a ping to the server.

pong

Used internally. Don't use it yourself. Sends a pong (ping response) to the server.

TODO

  • Event callbacks. There aren't any. They are planned and should be reasonably easy to setup. This module isn't all that useful without them.

  • Test on more XMPP servers. This has only been tested on the Openfire XMPP Server, version 3.6.2.

  • Make sure it works on Google's XMPP servers. Right now, it doesn't.

BUGS

Find bugs? Of course you will. Report them on the CPAN bug tracker. Don't email me directly about bugs. If it works for you, I'd love to hear about it. Find my email address in my CPAN profile (wilsond). Make sure to put "Net::SloppyXMPP Feedback" in the subject line or I might ignore it completely. Please don't send HTML email if at all possible. I greatly prefer plaintext email.

If you have a patch for this module, post it on the CPAN bug tracker. If it fits the goal of this module, I'll be very happy to merge it in. If it doesn't fit the goal, I won't, even if you think it makes sense.

  • This is version 0.04 of a module called SloppyXMPP. If you don't hit any bugs, you might want to try your luck at the lottery today.

  • Doesn't work with Google's XMPP server right now. I plan to make it work.

COPYRIGHT/LICENSE

Copyright 2009 Megagram. You can use any one of these licenses: Perl Artistic, GPL (version >= 2), BSD.

Perl Artistic License

Read it at http://dev.perl.org/licenses/artistic.html. This is the license we prefer.

GNU General Public License (GPL) Version 2

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see http://www.gnu.org/licenses/

See the full license at http://www.gnu.org/licenses/.

GNU General Public License (GPL) Version 3

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see http://www.gnu.org/licenses/

See the full license at http://www.gnu.org/licenses/.

BSD License

  Copyright (c) 2009 Megagram.
  All rights reserved.

  Redistribution and use in source and binary forms, with or without modification, are permitted
  provided that the following conditions are met:

      * Redistributions of source code must retain the above copyright notice, this list of conditions
      and the following disclaimer.
      * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
      and the following disclaimer in the documentation and/or other materials provided with the
      distribution.
      * Neither the name of Megagram nor the names of its contributors may be used to endorse
      or promote products derived from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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