Updated the client and component examples.

The component example now actually uses a config.xml file for its
connection information, and to initialize a roster.

5 files changed, 305 insertions, 70 deletions

diff --git a/INSTALL b/INSTALL
index f081a35a..82f87123 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,11 +1,12 @@
 Pre-requisites:
-Python 3.1 or 2.6
+- Python 3.1 or 2.6
 
 Install:
-python3 setup.py install
+> python3 setup.py install
 
 Root install:
-sudo python3 setup.py install
+> sudo python3 setup.py install
 
 To test:
-python example.py -v -j [USER@example.com] -p [PASSWORD]
+> cd examples
+> python echo_client.py -v -j [USER@example.com] -p [PASSWORD]
diff --git a/examples/component.py b/examples/component.py
deleted file mode 100644
index f24216c2..00000000
--- a/examples/component.py
+++ /dev/null
@@ -1,41 +0,0 @@
-import sleekxmpp.componentxmpp
-import logging
-from optparse import OptionParser
-import time
-
-class Example(sleekxmpp.componentxmpp.ComponentXMPP):
-	
-	def __init__(self, jid, password):
-		sleekxmpp.componentxmpp.ComponentXMPP.__init__(self, jid, password, 'vm1', 5230)
-		self.add_event_handler("session_start", self.start)
-		self.add_event_handler("message", self.message)
-	
-	def start(self, event):
-		#self.getRoster()
-		#self.sendPresence(pto='admin@tigase.netflint.net/sarkozy')
-		#self.sendPresence(pto='tigase.netflint.net')
-		pass
-
-	def message(self, event):
-		self.sendMessage("%s/%s" % (event['jid'], event['resource']), "Thanks for sending me, \"%s\"." % event['message'], mtype=event['type'])
-
-if __name__ == '__main__':
-	#parse command line arguements
-	optp = OptionParser()
-	optp.add_option('-q','--quiet', help='set logging to ERROR', action='store_const', dest='loglevel', const=logging.ERROR, default=logging.INFO)
-	optp.add_option('-d','--debug', help='set logging to DEBUG', action='store_const', dest='loglevel', const=logging.DEBUG, default=logging.INFO)
-	optp.add_option('-v','--verbose', help='set logging to COMM', action='store_const', dest='loglevel', const=5, default=logging.INFO)
-	optp.add_option("-c","--config", dest="configfile", default="config.xml", help="set config file to use")
-	opts,args = optp.parse_args()
-	
-	logging.basicConfig(level=opts.loglevel, format='%(levelname)-8s %(message)s')
-	xmpp = Example('component.vm1', 'secreteating')
-	xmpp.registerPlugin('xep_0004')
-	xmpp.registerPlugin('xep_0030')
-	xmpp.registerPlugin('xep_0060')
-	xmpp.registerPlugin('xep_0199')
-	if xmpp.connect():
-		xmpp.process(threaded=False)
-		print("done")
-	else:
-		print("Unable to connect.")
diff --git a/examples/config.xml b/examples/config.xml
new file mode 100644
index 00000000..4ca3a3d6
--- /dev/null
+++ b/examples/config.xml
@@ -0,0 +1,10 @@
+<config xmlns="sleekxmpp:config">
+  <jid>component.localhost</jid>
+  <secret>ssshh</secret>
+  <server>localhost</server>
+  <port>8888</port>
+
+  <query xmlns="jabber:iq:roster">
+    <item jid="user@example.com" subscription="both" />
+  </query>
+</config>
diff --git a/examples/config_component.py b/examples/config_component.py
new file mode 100755
index 00000000..1850b466
--- /dev/null
+++ b/examples/config_component.py
@@ -0,0 +1,190 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+    SleekXMPP: The Sleek XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of SleekXMPP.
+
+    See the file LICENSE for copying permission.
+"""
+
+import sys
+import logging
+import time
+from optparse import OptionParser
+
+import sleekxmpp
+from sleekxmpp.componentxmpp import ComponentXMPP
+from sleekxmpp.stanza.roster import Roster
+from sleekxmpp.xmlstream import ElementBase
+from sleekxmpp.xmlstream.stanzabase import ET, registerStanzaPlugin
+
+# Python versions before 3.0 do not use UTF-8 encoding
+# by default. To ensure that Unicode is handled properly
+# throughout SleekXMPP, we will set the default encoding
+# ourselves to UTF-8.
+if sys.version_info < (3,0):
+    reload(sys)
+    sys.setdefaultencoding('utf8')
+
+
+class Config(ElementBase):
+
+    """
+    In order to make loading and manipulating an XML config
+    file easier, we will create a custom stanza object for
+    our config XML file contents. See the documentation
+    on stanza objects for more information on how to create
+    and use stanza objects and stanza plugins.
+
+    We will reuse the IQ roster query stanza to store roster
+    information since it already exists.
+
+    Example config XML:
+      <config xmlns="sleekxmpp:config">
+        <jid>component.localhost</jid>
+        <secret>ssshh</secret>
+        <server>localhost</server>
+        <port>8888</port>
+
+        <query xmlns="jabber:iq:roster">
+          <item jid="user@example.com" subscription="both" />
+        </query>
+      </config>
+    """
+
+    name = "config"
+    namespace = "sleekxmpp:config"
+    interfaces = set(('jid', 'secret', 'server', 'port'))
+    sub_interfaces = interfaces
+
+
+registerStanzaPlugin(Config, Roster)
+
+
+class ConfigComponent(ComponentXMPP):
+
+    """
+    A simple SleekXMPP component that uses an external XML
+    file to store its configuration data. To make testing
+    that the component works, it will also echo messages sent
+    to it.
+    """
+
+    def __init__(self, config):
+        """
+        Create a ConfigComponent.
+
+        Arguments:
+            config      -- The XML contents of the config file.
+            config_file -- The XML config file object itself.
+        """
+        ComponentXMPP.__init__(self, config['jid'],
+                                     config['secret'],
+                                     config['server'],
+                                     config['port'])
+
+        # Store the roster information.
+        self.roster = config['roster']['items']
+
+        # The session_start event will be triggered when
+        # the component establishes its connection with the
+        # server and the XML streams are ready for use. We
+        # want to listen for this event so that we we can
+        # broadcast any needed initial presence stanzas.
+        self.add_event_handler("session_start", self.start)
+
+        # The message event is triggered whenever a message
+        # stanza is received. Be aware that that includes
+        # MUC messages and error messages.
+        self.add_event_handler("message", self.message)
+
+    def start(self, event):
+        """
+        Process the session_start event.
+
+        The typical action for the session_start event in a component
+        is to broadcast presence stanzas to all subscribers to the
+        component. Note that the component does not have a roster
+        provided by the XMPP server. In this case, we have possibly
+        saved a roster in the component's configuration file.
+
+        Since the component may use any number of JIDs, you should
+        also include the JID that is sending the presence.
+
+        Arguments:
+            event -- An empty dictionary. The session_start
+                     event does not provide any additional
+                     data.
+        """
+        for jid in self.roster:
+            if self.roster[jid]['subscription'] != 'none':
+                self.sendPresence(pfrom=self.jid, pto=jid)
+
+    def message(self, msg):
+        """
+        Process incoming message stanzas. Be aware that this also
+        includes MUC messages and error messages. It is usually
+        a good idea to check the messages's type before processing
+        or sending replies.
+
+        Since a component may send messages from any number of JIDs,
+        it is best to always include a from JID.
+
+        Arguments:
+            msg -- The received message stanza. See the documentation
+                   for stanza objects and the Message stanza to see
+                   how it may be used.
+        """
+        # The reply method will use the messages 'to' JID as the
+        # outgoing reply's 'from' JID.
+        msg.reply("Thanks for sending\n%(body)s" % msg).send()
+
+
+if __name__ == '__main__':
+    # Setup the command line arguments.
+    optp = OptionParser()
+
+    # Output verbosity options.
+    optp.add_option('-q','--quiet', help='set logging to ERROR',
+                    action='store_const', dest='loglevel',
+                    const=logging.ERROR, default=logging.INFO)
+    optp.add_option('-d','--debug', help='set logging to DEBUG',
+                    action='store_const', dest='loglevel',
+                    const=logging.DEBUG, default=logging.INFO)
+    optp.add_option('-v','--verbose', help='set logging to COMM',
+                    action='store_const', dest='loglevel',
+                    const=5, default=logging.INFO)
+
+    # Component name and secret options.
+    optp.add_option("-c", "--config", help="path to config file",
+                    dest="config", default="config.xml")
+
+    opts, args = optp.parse_args()
+
+    # Setup logging.
+    logging.basicConfig(level=opts.loglevel,
+                        format='%(levelname)-8s %(message)s')
+
+    # Load configuration data.
+    config_file = open(opts.config, 'r+')
+    config_data = "\n".join([line for line in config_file])
+    config = Config(xml=ET.fromstring(config_data))
+    config_file.close()
+
+    # Setup the ConfigComponent and register plugins. Note that while plugins may
+    # have interdependencies, the order in which you register them does
+    # not matter.
+    xmpp = ConfigComponent(config)
+    xmpp.registerPlugin('xep_0030') # Service Discovery
+    xmpp.registerPlugin('xep_0004') # Data Forms
+    xmpp.registerPlugin('xep_0060') # PubSub
+    xmpp.registerPlugin('xep_0199') # XMPP Ping
+
+    # Connect to the XMPP server and start processing XMPP stanzas.
+    if xmpp.connect():
+        xmpp.process(threaded=False)
+        print("Done")
+    else:
+        print("Unable to connect.")
diff --git a/examples/echo_client.py b/examples/echo_client.py
index 5e6314f0..e6266ec4 100644..100755
--- a/examples/echo_client.py
+++ b/examples/echo_client.py
@@ -1,54 +1,129 @@
 #!/usr/bin/env python
-# coding=utf8
+# -*- coding: utf-8 -*-
 
-import sleekxmpp
+"""
+    SleekXMPP: The Sleek XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of SleekXMPP.
+
+    See the file LICENSE for copying permission.
+"""
+
+import sys
 import logging
-from optparse import OptionParser
 import time
+from optparse import OptionParser
 
-import sys
+import sleekxmpp
 
+# Python versions before 3.0 do not use UTF-8 encoding
+# by default. To ensure that Unicode is handled properly
+# throughout SleekXMPP, we will set the default encoding
+# ourselves to UTF-8.
 if sys.version_info < (3,0):
     reload(sys)
     sys.setdefaultencoding('utf8')
 
 
-class Example(sleekxmpp.ClientXMPP):
+class EchoBot(sleekxmpp.ClientXMPP):
+
+    """
+    A simple SleekXMPP bot that will echo messages it
+    receives, along with a short thank you message.
+    """
 
     def __init__(self, jid, password):
         sleekxmpp.ClientXMPP.__init__(self, jid, password)
+
+        # The session_start event will be triggered when
+        # the bot establishes its connection with the server
+        # and the XML streams are ready for use. We want to
+        # listen for this event so that we we can intialize
+        # our roster.
         self.add_event_handler("session_start", self.start)
+
+        # The message event is triggered whenever a message
+        # stanza is received. Be aware that that includes
+        # MUC messages and error messages.
         self.add_event_handler("message", self.message)
 
     def start(self, event):
+        """
+        Process the session_start event.
+
+        Typical actions for the session_start event are
+        requesting the roster and broadcasting an intial
+        presence stanza.
+
+        Arguments:
+            event -- An empty dictionary. The session_start
+                     event does not provide any additional
+                     data.
+        """
         self.getRoster()
         self.sendPresence()
 
     def message(self, msg):
+        """
+        Process incoming message stanzas. Be aware that this also
+        includes MUC messages and error messages. It is usually
+        a good idea to check the messages's type before processing
+        or sending replies.
+
+        Arguments:
+            msg -- The received message stanza. See the documentation
+                   for stanza objects and the Message stanza to see
+                   how it may be used.
+        """
         msg.reply("Thanks for sending\n%(body)s" % msg).send()
 
+
 if __name__ == '__main__':
-    #parse command line arguements
+    # Setup the command line arguments.
     optp = OptionParser()
-    optp.add_option('-q','--quiet', help='set logging to ERROR', action='store_const', dest='loglevel', const=logging.ERROR, default=logging.INFO)
-    optp.add_option('-d','--debug', help='set logging to DEBUG', action='store_const', dest='loglevel', const=logging.DEBUG, default=logging.INFO)
-    optp.add_option('-v','--verbose', help='set logging to COMM', action='store_const', dest='loglevel', const=5, default=logging.INFO)
-    optp.add_option("-j","--jid", dest="jid", help="JID to use")
-    optp.add_option("-p","--password", dest="password", help="password to use")
-    opts,args = optp.parse_args()
-
-    logging.basicConfig(level=opts.loglevel, format='%(levelname)-8s %(message)s')
-    xmpp = Example(opts.jid, opts.password)
-    xmpp.registerPlugin('xep_0030')
-    xmpp.registerPlugin('xep_0004')
-    xmpp.registerPlugin('xep_0060')
-    xmpp.registerPlugin('xep_0199')
-
-    # use this if you don't have pydns, and want to
-    # talk to GoogleTalk (e.g.)
-    if xmpp.connect(('talk.google.com', 5222)):
-    #khif xmpp.connect():
+
+    # Output verbosity options.
+    optp.add_option('-q','--quiet', help='set logging to ERROR',
+                    action='store_const', dest='loglevel',
+                    const=logging.ERROR, default=logging.INFO)
+    optp.add_option('-d','--debug', help='set logging to DEBUG',
+                    action='store_const', dest='loglevel',
+                    const=logging.DEBUG, default=logging.INFO)
+    optp.add_option('-v','--verbose', help='set logging to COMM',
+                    action='store_const', dest='loglevel',
+                    const=5, default=logging.INFO)
+
+    # JID and password options.
+    optp.add_option("-j", "--jid", dest="jid",
+                    help="JID to use")
+    optp.add_option("-p", "--password", dest="password",
+                    help="password to use")
+
+    opts, args = optp.parse_args()
+
+    # Setup logging.
+    logging.basicConfig(level=opts.loglevel,
+                        format='%(levelname)-8s %(message)s')
+
+    # Setup the EchoBot and register plugins. Note that while plugins may
+    # have interdependencies, the order in which you register them does
+    # not matter.
+    xmpp = EchoBot(opts.jid, opts.password)
+    xmpp.registerPlugin('xep_0030') # Service Discovery
+    xmpp.registerPlugin('xep_0004') # Data Forms
+    xmpp.registerPlugin('xep_0060') # PubSub
+    xmpp.registerPlugin('xep_0199') # XMPP Ping
+
+    # Connect to the XMPP server and start processing XMPP stanzas.
+    if xmpp.connect():
+        # If you do not have the pydns library installed, you will need
+        # to manually specify the name of the server if it does not match
+        # the one in the JID. For example, to use Google Talk you would
+        # need to use:
+        #
+        # if xmpp.connect(('talk.google.com', 5222)):
+        #     ...
         xmpp.process(threaded=False)
-        print("done")
+        print("Done")
     else:
         print("Unable to connect.")