Rename to slixmpp

12 files changed, 1314 insertions, 0 deletions

diff --git a/slixmpp/stanza/__init__.py b/slixmpp/stanza/__init__.py
new file mode 100644
index 00000000..6cd6a2c5
--- /dev/null
+++ b/slixmpp/stanza/__init__.py
@@ -0,0 +1,15 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+
+from slixmpp.stanza.error import Error
+from slixmpp.stanza.iq import Iq
+from slixmpp.stanza.message import Message
+from slixmpp.stanza.presence import Presence
+from slixmpp.stanza.stream_features import StreamFeatures
+from slixmpp.stanza.stream_error import StreamError
diff --git a/slixmpp/stanza/atom.py b/slixmpp/stanza/atom.py
new file mode 100644
index 00000000..2c105685
--- /dev/null
+++ b/slixmpp/stanza/atom.py
@@ -0,0 +1,26 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.xmlstream import ElementBase
+
+
+class AtomEntry(ElementBase):
+
+    """
+    A simple Atom feed entry.
+
+    Stanza Interface:
+        title   -- The title of the Atom feed entry.
+        summary -- The summary of the Atom feed entry.
+    """
+
+    namespace = 'http://www.w3.org/2005/Atom'
+    name = 'entry'
+    plugin_attrib = 'entry'
+    interfaces = set(('title', 'summary'))
+    sub_interfaces = set(('title', 'summary'))
diff --git a/slixmpp/stanza/error.py b/slixmpp/stanza/error.py
new file mode 100644
index 00000000..efdcda0e
--- /dev/null
+++ b/slixmpp/stanza/error.py
@@ -0,0 +1,174 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.xmlstream import ElementBase, ET
+
+
+class Error(ElementBase):
+
+    """
+    XMPP stanzas of type 'error' should include an <error> stanza that
+    describes the nature of the error and how it should be handled.
+
+    Use the 'XEP-0086: Error Condition Mappings' plugin to include error
+    codes used in older XMPP versions.
+
+    Example error stanza:
+        <error type="cancel" code="404">
+          <item-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" />
+          <text xmlns="urn:ietf:params:xml:ns:xmpp-stanzas">
+            The item was not found.
+          </text>
+        </error>
+
+    Stanza Interface:
+        code      -- The error code used in older XMPP versions.
+        condition -- The name of the condition element.
+        text      -- Human readable description of the error.
+        type      -- Error type indicating how the error should be handled.
+
+    Attributes:
+        conditions   -- The set of allowable error condition elements.
+        condition_ns -- The namespace for the condition element.
+        types        -- A set of values indicating how the error
+                        should be treated.
+
+    Methods:
+        setup         -- Overrides ElementBase.setup.
+        get_condition -- Retrieve the name of the condition element.
+        set_condition -- Add a condition element.
+        del_condition -- Remove the condition element.
+        get_text      -- Retrieve the contents of the <text> element.
+        set_text      -- Set the contents of the <text> element.
+        del_text      -- Remove the <text> element.
+    """
+
+    namespace = 'jabber:client'
+    name = 'error'
+    plugin_attrib = 'error'
+    interfaces = set(('code', 'condition', 'text', 'type',
+                      'gone', 'redirect', 'by'))
+    sub_interfaces = set(('text',))
+    plugin_attrib_map = {}
+    plugin_tag_map = {}
+    conditions = set(('bad-request', 'conflict', 'feature-not-implemented',
+                      'forbidden', 'gone', 'internal-server-error',
+                      'item-not-found', 'jid-malformed', 'not-acceptable',
+                      'not-allowed', 'not-authorized', 'payment-required',
+                      'recipient-unavailable', 'redirect',
+                      'registration-required', 'remote-server-not-found',
+                      'remote-server-timeout', 'resource-constraint',
+                      'service-unavailable', 'subscription-required',
+                      'undefined-condition', 'unexpected-request'))
+    condition_ns = 'urn:ietf:params:xml:ns:xmpp-stanzas'
+    types = set(('cancel', 'continue', 'modify', 'auth', 'wait'))
+
+    def setup(self, xml=None):
+        """
+        Populate the stanza object using an optional XML object.
+
+        Overrides ElementBase.setup.
+
+        Sets a default error type and condition, and changes the
+        parent stanza's type to 'error'.
+
+        Arguments:
+            xml -- Use an existing XML object for the stanza's values.
+        """
+        if ElementBase.setup(self, xml):
+            #If we had to generate XML then set default values.
+            self['type'] = 'cancel'
+            self['condition'] = 'feature-not-implemented'
+        if self.parent is not None:
+            self.parent()['type'] = 'error'
+
+    def get_condition(self):
+        """Return the condition element's name."""
+        for child in self.xml:
+            if "{%s}" % self.condition_ns in child.tag:
+                cond = child.tag.split('}', 1)[-1]
+                if cond in self.conditions:
+                    return cond
+        return ''
+
+    def set_condition(self, value):
+        """
+        Set the tag name of the condition element.
+
+        Arguments:
+           value -- The tag name of the condition element.
+        """
+        if value in self.conditions:
+            del self['condition']
+            self.xml.append(ET.Element("{%s}%s" % (self.condition_ns, value)))
+        return self
+
+    def del_condition(self):
+        """Remove the condition element."""
+        for child in self.xml:
+            if "{%s}" % self.condition_ns in child.tag:
+                tag = child.tag.split('}', 1)[-1]
+                if tag in self.conditions:
+                    self.xml.remove(child)
+        return self
+
+    def get_text(self):
+        """Retrieve the contents of the <text> element."""
+        return self._get_sub_text('{%s}text' % self.condition_ns)
+
+    def set_text(self, value):
+        """
+        Set the contents of the <text> element.
+
+        Arguments:
+            value -- The new contents for the <text> element.
+        """
+        self._set_sub_text('{%s}text' % self.condition_ns, text=value)
+        return self
+
+    def del_text(self):
+        """Remove the <text> element."""
+        self._del_sub('{%s}text' % self.condition_ns)
+        return self
+
+    def get_gone(self):
+        return self._get_sub_text('{%s}gone' % self.condition_ns, '')
+
+    def get_redirect(self):
+        return self._get_sub_text('{%s}redirect' % self.condition_ns, '')
+
+    def set_gone(self, value):
+        if value:
+            del self['condition']
+            return self._set_sub_text('{%s}gone' % self.condition_ns, value)
+        elif self['condition'] == 'gone':
+            del self['condition']
+
+    def set_redirect(self, value):
+        if value:
+            del self['condition']
+            ns = self.condition_ns
+            return self._set_sub_text('{%s}redirect' % ns, value)
+        elif self['condition'] == 'redirect':
+            del self['condition']
+
+    def del_gone(self):
+        self._del_sub('{%s}gone' % self.condition_ns)
+
+    def del_redirect(self):
+        self._del_sub('{%s}redirect' % self.condition_ns)
+
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+Error.getCondition = Error.get_condition
+Error.setCondition = Error.set_condition
+Error.delCondition = Error.del_condition
+Error.getText = Error.get_text
+Error.setText = Error.set_text
+Error.delText = Error.del_text
diff --git a/slixmpp/stanza/htmlim.py b/slixmpp/stanza/htmlim.py
new file mode 100644
index 00000000..a2842a3b
--- /dev/null
+++ b/slixmpp/stanza/htmlim.py
@@ -0,0 +1,21 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.stanza import Message
+from slixmpp.xmlstream import register_stanza_plugin
+from slixmpp.plugins.xep_0071 import XHTML_IM as HTMLIM
+
+
+register_stanza_plugin(Message, HTMLIM)
+
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+HTMLIM.setBody = HTMLIM.set_body
+HTMLIM.getBody = HTMLIM.get_body
+HTMLIM.delBody = HTMLIM.del_body
diff --git a/slixmpp/stanza/iq.py b/slixmpp/stanza/iq.py
new file mode 100644
index 00000000..4be819b0
--- /dev/null
+++ b/slixmpp/stanza/iq.py
@@ -0,0 +1,281 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.stanza.rootstanza import RootStanza
+from slixmpp.xmlstream import StanzaBase, ET
+from slixmpp.xmlstream.handler import Waiter, Callback
+from slixmpp.xmlstream.matcher import MatchIDSender, MatcherId
+from slixmpp.exceptions import IqTimeout, IqError
+
+
+class Iq(RootStanza):
+
+    """
+    XMPP <iq> stanzas, or info/query stanzas, are XMPP's method of
+    requesting and modifying information, similar to HTTP's GET and
+    POST methods.
+
+    Each <iq> stanza must have an 'id' value which associates the
+    stanza with the response stanza. XMPP entities must always
+    be given a response <iq> stanza with a type of 'result' after
+    sending a stanza of type 'get' or 'set'.
+
+    Most uses cases for <iq> stanzas will involve adding a <query>
+    element whose namespace indicates the type of information
+    desired. However, some custom XMPP applications use <iq> stanzas
+    as a carrier stanza for an application-specific protocol instead.
+
+    Example <iq> Stanzas:
+        <iq to="user@example.com" type="get" id="314">
+          <query xmlns="http://jabber.org/protocol/disco#items" />
+        </iq>
+
+        <iq to="user@localhost" type="result" id="17">
+          <query xmlns='jabber:iq:roster'>
+            <item jid='otheruser@example.net'
+                  name='John Doe'
+                  subscription='both'>
+              <group>Friends</group>
+            </item>
+          </query>
+        </iq>
+
+    Stanza Interface:
+        query -- The namespace of the <query> element if one exists.
+
+    Attributes:
+        types -- May be one of: get, set, result, or error.
+
+    Methods:
+        __init__    -- Overrides StanzaBase.__init__.
+        unhandled   -- Send error if there are no handlers.
+        set_payload -- Overrides StanzaBase.set_payload.
+        set_query   -- Add or modify a <query> element.
+        get_query   -- Return the namespace of the <query> element.
+        del_query   -- Remove the <query> element.
+        reply       -- Overrides StanzaBase.reply
+        send        -- Overrides StanzaBase.send
+    """
+
+    namespace = 'jabber:client'
+    name = 'iq'
+    interfaces = set(('type', 'to', 'from', 'id', 'query'))
+    types = set(('get', 'result', 'set', 'error'))
+    plugin_attrib = name
+
+    def __init__(self, *args, **kwargs):
+        """
+        Initialize a new <iq> stanza with an 'id' value.
+
+        Overrides StanzaBase.__init__.
+        """
+        StanzaBase.__init__(self, *args, **kwargs)
+        if self['id'] == '':
+            if self.stream is not None:
+                self['id'] = self.stream.new_id()
+            else:
+                self['id'] = '0'
+
+    def unhandled(self):
+        """
+        Send a feature-not-implemented error if the stanza is not handled.
+
+        Overrides StanzaBase.unhandled.
+        """
+        if self['type'] in ('get', 'set'):
+            self.reply()
+            self['error']['condition'] = 'feature-not-implemented'
+            self['error']['text'] = 'No handlers registered for this request.'
+            self.send()
+
+    def set_payload(self, value):
+        """
+        Set the XML contents of the <iq> stanza.
+
+        Arguments:
+            value -- An XML object to use as the <iq> stanza's contents
+        """
+        self.clear()
+        StanzaBase.set_payload(self, value)
+        return self
+
+    def set_query(self, value):
+        """
+        Add or modify a <query> element.
+
+        Query elements are differentiated by their namespace.
+
+        Arguments:
+            value -- The namespace of the <query> element.
+        """
+        query = self.xml.find("{%s}query" % value)
+        if query is None and value:
+            plugin = self.plugin_tag_map.get('{%s}query' % value, None)
+            if plugin:
+                self.enable(plugin.plugin_attrib)
+            else:
+                self.clear()
+                query = ET.Element("{%s}query" % value)
+                self.xml.append(query)
+        return self
+
+    def get_query(self):
+        """Return the namespace of the <query> element."""
+        for child in self.xml:
+            if child.tag.endswith('query'):
+                ns = child.tag.split('}')[0]
+                if '{' in ns:
+                    ns = ns[1:]
+                return ns
+        return ''
+
+    def del_query(self):
+        """Remove the <query> element."""
+        for child in self.xml:
+            if child.tag.endswith('query'):
+                self.xml.remove(child)
+        return self
+
+    def reply(self, clear=True):
+        """
+        Send a reply <iq> stanza.
+
+        Overrides StanzaBase.reply
+
+        Sets the 'type' to 'result' in addition to the default
+        StanzaBase.reply behavior.
+
+        Arguments:
+            clear -- Indicates if existing content should be
+                     removed before replying. Defaults to True.
+        """
+        self['type'] = 'result'
+        StanzaBase.reply(self, clear)
+        return self
+
+    def send(self, block=True, timeout=None, callback=None, now=False, timeout_callback=None):
+        """
+        Send an <iq> stanza over the XML stream.
+
+        The send call can optionally block until a response is received or
+        a timeout occurs. Be aware that using blocking in non-threaded event
+        handlers can drastically impact performance. Otherwise, a callback
+        handler can be provided that will be executed when the Iq stanza's
+        result reply is received. Be aware though that that the callback
+        handler will not be executed in its own thread.
+
+        Using both block and callback is not recommended, and only the
+        callback argument will be used in that case.
+
+        Overrides StanzaBase.send
+
+        Arguments:
+            block    -- Specify if the send call will block until a response
+                        is received, or a timeout occurs. Defaults to True.
+            timeout  -- The length of time (in seconds) to wait for a response
+                        before exiting the send call if blocking is used.
+                        Defaults to slixmpp.xmlstream.RESPONSE_TIMEOUT
+            callback -- Optional reference to a stream handler function. Will
+                        be executed when a reply stanza is received.
+            now      -- Indicates if the send queue should be skipped and send
+                        the stanza immediately. Used during stream
+                        initialization. Defaults to False.
+            timeout_callback -- Optional reference to a stream handler function.
+                        Will be executed when the timeout expires before a
+                        response has been received with the originally-sent IQ
+                        stanza.  Only called if there is a callback parameter
+                        (and therefore are in async mode).
+        """
+        if timeout is None:
+            timeout = self.stream.response_timeout
+
+        if self.stream.session_bind_event.is_set():
+            matcher = MatchIDSender({
+                'id': self['id'],
+                'self': self.stream.boundjid,
+                'peer': self['to']
+            })
+        else:
+            matcher = MatcherId(self['id'])
+
+        if callback is not None and self['type'] in ('get', 'set'):
+            handler_name = 'IqCallback_%s' % self['id']
+            if timeout_callback:
+                self.callback = callback
+                self.timeout_callback = timeout_callback
+                self.stream.schedule('IqTimeout_%s' % self['id'],
+                                     timeout,
+                                     self._fire_timeout,
+                                     repeat=False)
+                handler = Callback(handler_name,
+                                   matcher,
+                                   self._handle_result,
+                                   once=True)
+            else:
+                handler = Callback(handler_name,
+                                   matcher,
+                                   callback,
+                                   once=True)
+            self.stream.register_handler(handler)
+            StanzaBase.send(self, now=now)
+            return handler_name
+        elif block and self['type'] in ('get', 'set'):
+            waitfor = Waiter('IqWait_%s' % self['id'], matcher)
+            self.stream.register_handler(waitfor)
+            StanzaBase.send(self, now=now)
+            result = waitfor.wait(timeout)
+            if not result:
+                raise IqTimeout(self)
+            if result['type'] == 'error':
+                raise IqError(result)
+            return result
+        else:
+            return StanzaBase.send(self, now=now)
+
+    def _handle_result(self, iq):
+        # we got the IQ, so don't fire the timeout
+        self.stream.scheduler.remove('IqTimeout_%s' % self['id'])
+        self.callback(iq)
+
+    def _fire_timeout(self):
+        # don't fire the handler for the IQ, if it finally does come in
+        self.stream.remove_handler('IqCallback_%s' % self['id'])
+        self.timeout_callback(self)
+
+    def _set_stanza_values(self, values):
+        """
+        Set multiple stanza interface values using a dictionary.
+
+        Stanza plugin values may be set usind nested dictionaries.
+
+        If the interface 'query' is given, then it will be set
+        last to avoid duplication of the <query /> element.
+
+        Overrides ElementBase._set_stanza_values.
+
+        Arguments:
+            values -- A dictionary mapping stanza interface with values.
+                      Plugin interfaces may accept a nested dictionary that
+                      will be used recursively.
+        """
+        query = values.get('query', '')
+        if query:
+            del values['query']
+            StanzaBase._set_stanza_values(self, values)
+            self['query'] = query
+        else:
+            StanzaBase._set_stanza_values(self, values)
+        return self
+
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+Iq.setPayload = Iq.set_payload
+Iq.getQuery = Iq.get_query
+Iq.setQuery = Iq.set_query
+Iq.delQuery = Iq.del_query
diff --git a/slixmpp/stanza/message.py b/slixmpp/stanza/message.py
new file mode 100644
index 00000000..9495a629
--- /dev/null
+++ b/slixmpp/stanza/message.py
@@ -0,0 +1,199 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.stanza.rootstanza import RootStanza
+from slixmpp.xmlstream import StanzaBase, ET
+
+
+class Message(RootStanza):
+
+    """
+    XMPP's <message> stanzas are a "push" mechanism to send information
+    to other XMPP entities without requiring a response.
+
+    Chat clients will typically use <message> stanzas that have a type
+    of either "chat" or "groupchat".
+
+    When handling a message event, be sure to check if the message is
+    an error response.
+
+    Example <message> stanzas:
+        <message to="user1@example.com" from="user2@example.com">
+          <body>Hi!</body>
+        </message>
+
+        <message type="groupchat" to="room@conference.example.com">
+          <body>Hi everyone!</body>
+        </message>
+
+    Stanza Interface:
+        body    -- The main contents of the message.
+        subject -- An optional description of the message's contents.
+        mucroom -- (Read-only) The name of the MUC room that sent the message.
+        mucnick -- (Read-only) The MUC nickname of message's sender.
+
+    Attributes:
+        types -- May be one of: normal, chat, headline, groupchat, or error.
+
+    Methods:
+        setup       -- Overrides StanzaBase.setup.
+        chat        -- Set the message type to 'chat'.
+        normal      -- Set the message type to 'normal'.
+        reply       -- Overrides StanzaBase.reply
+        get_type    -- Overrides StanzaBase interface
+        get_mucroom -- Return the name of the MUC room of the message.
+        set_mucroom -- Dummy method to prevent assignment.
+        del_mucroom -- Dummy method to prevent deletion.
+        get_mucnick -- Return the MUC nickname of the message's sender.
+        set_mucnick -- Dummy method to prevent assignment.
+        del_mucnick -- Dummy method to prevent deletion.
+    """
+
+    name = 'message'
+    namespace = 'jabber:client'
+    plugin_attrib = name
+    interfaces = set(['type', 'to', 'from', 'id', 'body', 'subject',
+                      'thread', 'parent_thread', 'mucroom', 'mucnick'])
+    sub_interfaces = set(['body', 'subject', 'thread'])
+    lang_interfaces = sub_interfaces
+    types = set(['normal', 'chat', 'headline', 'error', 'groupchat'])
+
+    def __init__(self, *args, **kwargs):
+        """
+        Initialize a new <message /> stanza with an optional 'id' value.
+
+        Overrides StanzaBase.__init__.
+        """
+        StanzaBase.__init__(self, *args, **kwargs)
+        if self['id'] == '':
+            if self.stream is not None and self.stream.use_message_ids:
+                self['id'] = self.stream.new_id()
+
+    def get_type(self):
+        """
+        Return the message type.
+
+        Overrides default stanza interface behavior.
+
+        Returns 'normal' if no type attribute is present.
+        """
+        return self._get_attr('type', 'normal')
+
+    def get_parent_thread(self):
+        """Return the message thread's parent thread."""
+        thread = self.xml.find('{%s}thread' % self.namespace)
+        if thread is not None:
+            return thread.attrib.get('parent', '')
+        return ''
+
+    def set_parent_thread(self, value):
+        """Add or change the message thread's parent thread."""
+        thread = self.xml.find('{%s}thread' % self.namespace)
+        if value:
+            if thread is None:
+                thread = ET.Element('{%s}thread' % self.namespace)
+                self.xml.append(thread)
+            thread.attrib['parent'] = value
+        else:
+            if thread is not None and 'parent' in thread.attrib:
+                del thread.attrib['parent']
+
+    def del_parent_thread(self):
+        """Delete the message thread's parent reference."""
+        thread = self.xml.find('{%s}thread' % self.namespace)
+        if thread is not None and 'parent' in thread.attrib:
+            del thread.attrib['parent']
+
+    def chat(self):
+        """Set the message type to 'chat'."""
+        self['type'] = 'chat'
+        return self
+
+    def normal(self):
+        """Set the message type to 'normal'."""
+        self['type'] = 'normal'
+        return self
+
+    def reply(self, body=None, clear=True):
+        """
+        Create a message reply.
+
+        Overrides StanzaBase.reply.
+
+        Sets proper 'to' attribute if the message is from a MUC, and
+        adds a message body if one is given.
+
+        Arguments:
+            body  -- Optional text content for the message.
+            clear -- Indicates if existing content should be removed
+                     before replying. Defaults to True.
+        """
+        thread = self['thread']
+        parent = self['parent_thread']
+
+        StanzaBase.reply(self, clear)
+        if self['type'] == 'groupchat':
+            self['to'] = self['to'].bare
+
+        self['thread'] = thread
+        self['parent_thread'] = parent
+
+        del self['id']
+
+        if body is not None:
+            self['body'] = body
+        return self
+
+    def get_mucroom(self):
+        """
+        Return the name of the MUC room where the message originated.
+
+        Read-only stanza interface.
+        """
+        if self['type'] == 'groupchat':
+            return self['from'].bare
+        else:
+            return ''
+
+    def get_mucnick(self):
+        """
+        Return the nickname of the MUC user that sent the message.
+
+        Read-only stanza interface.
+        """
+        if self['type'] == 'groupchat':
+            return self['from'].resource
+        else:
+            return ''
+
+    def set_mucroom(self, value):
+        """Dummy method to prevent modification."""
+        pass
+
+    def del_mucroom(self):
+        """Dummy method to prevent deletion."""
+        pass
+
+    def set_mucnick(self, value):
+        """Dummy method to prevent modification."""
+        pass
+
+    def del_mucnick(self):
+        """Dummy method to prevent deletion."""
+        pass
+
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+Message.getType = Message.get_type
+Message.getMucroom = Message.get_mucroom
+Message.setMucroom = Message.set_mucroom
+Message.delMucroom = Message.del_mucroom
+Message.getMucnick = Message.get_mucnick
+Message.setMucnick = Message.set_mucnick
+Message.delMucnick = Message.del_mucnick
diff --git a/slixmpp/stanza/nick.py b/slixmpp/stanza/nick.py
new file mode 100644
index 00000000..bc7bf5ed
--- /dev/null
+++ b/slixmpp/stanza/nick.py
@@ -0,0 +1,23 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+# The nickname stanza has been moved to its own plugin, but the existing
+# references are kept for backwards compatibility.
+
+from slixmpp.stanza import Message, Presence
+from slixmpp.xmlstream import register_stanza_plugin
+from slixmpp.plugins.xep_0172 import UserNick as Nick
+
+register_stanza_plugin(Message, Nick)
+register_stanza_plugin(Presence, Nick)
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+Nick.setNick = Nick.set_nick
+Nick.getNick = Nick.get_nick
+Nick.delNick = Nick.del_nick
diff --git a/slixmpp/stanza/presence.py b/slixmpp/stanza/presence.py
new file mode 100644
index 00000000..3da20b7d
--- /dev/null
+++ b/slixmpp/stanza/presence.py
@@ -0,0 +1,191 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.stanza.rootstanza import RootStanza
+from slixmpp.xmlstream import StanzaBase
+
+
+class Presence(RootStanza):
+
+    """
+    XMPP's <presence> stanza allows entities to know the status of other
+    clients and components. Since it is currently the only multi-cast
+    stanza in XMPP, many extensions add more information to <presence>
+    stanzas to broadcast to every entry in the roster, such as
+    capabilities, music choices, or locations (XEP-0115: Entity Capabilities
+    and XEP-0163: Personal Eventing Protocol).
+
+    Since <presence> stanzas are broadcast when an XMPP entity changes
+    its status, the bulk of the traffic in an XMPP network will be from
+    <presence> stanzas. Therefore, do not include more information than
+    necessary in a status message or within a <presence> stanza in order
+    to help keep the network running smoothly.
+
+    Example <presence> stanzas:
+        <presence />
+
+        <presence from="user@example.com">
+          <show>away</show>
+          <status>Getting lunch.</status>
+          <priority>5</priority>
+        </presence>
+
+        <presence type="unavailable" />
+
+        <presence to="user@otherhost.com" type="subscribe" />
+
+    Stanza Interface:
+        priority -- A value used by servers to determine message routing.
+        show     -- The type of status, such as away or available for chat.
+        status   -- Custom, human readable status message.
+
+    Attributes:
+        types     -- One of: available, unavailable, error, probe,
+                         subscribe, subscribed, unsubscribe,
+                         and unsubscribed.
+        showtypes -- One of: away, chat, dnd, and xa.
+
+    Methods:
+        setup        -- Overrides StanzaBase.setup
+        reply        -- Overrides StanzaBase.reply
+        set_show     -- Set the value of the <show> element.
+        get_type     -- Get the value of the type attribute or <show> element.
+        set_type     -- Set the value of the type attribute or <show> element.
+        get_priority -- Get the value of the <priority> element.
+        set_priority -- Set the value of the <priority> element.
+    """
+
+    name = 'presence'
+    namespace = 'jabber:client'
+    plugin_attrib = name
+    interfaces = set(['type', 'to', 'from', 'id', 'show',
+                      'status', 'priority'])
+    sub_interfaces = set(['show', 'status', 'priority'])
+    lang_interfaces = set(['status'])
+
+    types = set(['available', 'unavailable', 'error', 'probe', 'subscribe',
+                 'subscribed', 'unsubscribe', 'unsubscribed'])
+    showtypes = set(['dnd', 'chat', 'xa', 'away'])
+
+    def __init__(self, *args, **kwargs):
+        """
+        Initialize a new <presence /> stanza with an optional 'id' value.
+
+        Overrides StanzaBase.__init__.
+        """
+        StanzaBase.__init__(self, *args, **kwargs)
+        if self['id'] == '':
+            if self.stream is not None and self.stream.use_presence_ids:
+                self['id'] = self.stream.new_id()
+
+    def exception(self, e):
+        """
+        Override exception passback for presence.
+        """
+        pass
+
+    def set_show(self, show):
+        """
+        Set the value of the <show> element.
+
+        Arguments:
+            show -- Must be one of: away, chat, dnd, or xa.
+        """
+        if show is None:
+            self._del_sub('show')
+        elif show in self.showtypes:
+            self._set_sub_text('show', text=show)
+        return self
+
+    def get_type(self):
+        """
+        Return the value of the <presence> stanza's type attribute, or
+        the value of the <show> element.
+        """
+        out = self._get_attr('type')
+        if not out:
+            out = self['show']
+        if not out or out is None:
+            out = 'available'
+        return out
+
+    def set_type(self, value):
+        """
+        Set the type attribute's value, and the <show> element
+        if applicable.
+
+        Arguments:
+            value -- Must be in either self.types or self.showtypes.
+        """
+        if value in self.types:
+            self['show'] = None
+            if value == 'available':
+                value = ''
+            self._set_attr('type', value)
+        elif value in self.showtypes:
+            self['show'] = value
+        return self
+
+    def del_type(self):
+        """
+        Remove both the type attribute and the <show> element.
+        """
+        self._del_attr('type')
+        self._del_sub('show')
+
+    def set_priority(self, value):
+        """
+        Set the entity's priority value. Some server use priority to
+        determine message routing behavior.
+
+        Bot clients should typically use a priority of 0 if the same
+        JID is used elsewhere by a human-interacting client.
+
+        Arguments:
+            value -- An integer value greater than or equal to 0.
+        """
+        self._set_sub_text('priority', text=str(value))
+
+    def get_priority(self):
+        """
+        Return the value of the <presence> element as an integer.
+        """
+        p = self._get_sub_text('priority')
+        if not p:
+            p = 0
+        try:
+            return int(p)
+        except ValueError:
+            # The priority is not a number: we consider it 0 as a default
+            return 0
+
+    def reply(self, clear=True):
+        """
+        Set the appropriate presence reply type.
+
+        Overrides StanzaBase.reply.
+
+        Arguments:
+            clear -- Indicates if the stanza contents should be removed
+                     before replying. Defaults to True.
+        """
+        if self['type'] == 'unsubscribe':
+            self['type'] = 'unsubscribed'
+        elif self['type'] == 'subscribe':
+            self['type'] = 'subscribed'
+        return StanzaBase.reply(self, clear)
+
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+Presence.setShow = Presence.set_show
+Presence.getType = Presence.get_type
+Presence.setType = Presence.set_type
+Presence.delType = Presence.get_type
+Presence.getPriority = Presence.get_priority
+Presence.setPriority = Presence.set_priority
diff --git a/slixmpp/stanza/rootstanza.py b/slixmpp/stanza/rootstanza.py
new file mode 100644
index 00000000..7bd0c32d
--- /dev/null
+++ b/slixmpp/stanza/rootstanza.py
@@ -0,0 +1,86 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+import logging
+
+from slixmpp.exceptions import XMPPError, IqError, IqTimeout
+from slixmpp.stanza import Error
+from slixmpp.xmlstream import ET, StanzaBase, register_stanza_plugin
+
+
+log = logging.getLogger(__name__)
+
+
+class RootStanza(StanzaBase):
+
+    """
+    A top-level XMPP stanza in an XMLStream.
+
+    The RootStanza class provides a more XMPP specific exception
+    handler than provided by the generic StanzaBase class.
+
+    Methods:
+        exception -- Overrides StanzaBase.exception
+    """
+
+    def exception(self, e):
+        """
+        Create and send an error reply.
+
+        Typically called when an event handler raises an exception.
+        The error's type and text content are based on the exception
+        object's type and content.
+
+        Overrides StanzaBase.exception.
+
+        Arguments:
+            e -- Exception object
+        """
+        if isinstance(e, IqError):
+            # We received an Iq error reply, but it wasn't caught
+            # locally. Using the condition/text from that error
+            # response could leak too much information, so we'll
+            # only use a generic error here.
+            self.reply()
+            self['error']['condition'] = 'undefined-condition'
+            self['error']['text'] = 'External error'
+            self['error']['type'] = 'cancel'
+            log.warning('You should catch IqError exceptions')
+            self.send()
+        elif isinstance(e, IqTimeout):
+            self.reply()
+            self['error']['condition'] = 'remote-server-timeout'
+            self['error']['type'] = 'wait'
+            log.warning('You should catch IqTimeout exceptions')
+            self.send()
+        elif isinstance(e, XMPPError):
+            # We raised this deliberately
+            self.reply(clear=e.clear)
+            self['error']['condition'] = e.condition
+            self['error']['text'] = e.text
+            self['error']['type'] = e.etype
+            if e.extension is not None:
+                # Extended error tag
+                extxml = ET.Element("{%s}%s" % (e.extension_ns, e.extension),
+                                    e.extension_args)
+                self['error'].append(extxml)
+            self.send()
+        else:
+            # We probably didn't raise this on purpose, so send an error stanza
+            self.reply()
+            self['error']['condition'] = 'undefined-condition'
+            self['error']['text'] = "Slixmpp got into trouble."
+            self['error']['type'] = 'cancel'
+            self.send()
+            # log the error
+            log.exception('Error handling {%s}%s stanza',
+                          self.namespace, self.name)
+            # Finally raise the exception to a global exception handler
+            self.stream.exception(e)
+
+register_stanza_plugin(RootStanza, Error)
diff --git a/slixmpp/stanza/roster.py b/slixmpp/stanza/roster.py
new file mode 100644
index 00000000..0cf11429
--- /dev/null
+++ b/slixmpp/stanza/roster.py
@@ -0,0 +1,158 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.stanza import Iq
+from slixmpp.xmlstream import JID
+from slixmpp.xmlstream import ET, ElementBase, register_stanza_plugin
+
+
+class Roster(ElementBase):
+
+    """
+    Example roster stanzas:
+        <iq type="set">
+          <query xmlns="jabber:iq:roster">
+            <item jid="user@example.com" subscription="both" name="User">
+              <group>Friends</group>
+            </item>
+          </query>
+        </iq>
+
+    Stanza Inteface:
+        items -- A dictionary of roster entries contained
+                 in the stanza.
+
+    Methods:
+        get_items -- Return a dictionary of roster entries.
+        set_items -- Add <item> elements.
+        del_items -- Remove all <item> elements.
+    """
+
+    namespace = 'jabber:iq:roster'
+    name = 'query'
+    plugin_attrib = 'roster'
+    interfaces = set(('items', 'ver'))
+
+    def get_ver(self):
+        """
+        Ensure handling an empty ver attribute propery.
+
+        The ver attribute is special in that the presence of the
+        attribute with an empty value is important for boostrapping
+        roster versioning.
+        """
+        return self.xml.attrib.get('ver', None)
+
+    def set_ver(self, ver):
+        """
+        Ensure handling an empty ver attribute propery.
+
+        The ver attribute is special in that the presence of the
+        attribute with an empty value is important for boostrapping
+        roster versioning.
+        """
+        if ver is not None:
+            self.xml.attrib['ver'] = ver
+        else:
+            del self.xml.attrib['ver']
+
+    def set_items(self, items):
+        """
+        Set the roster entries in the <roster> stanza.
+
+        Uses a dictionary using JIDs as keys, where each entry is itself
+        a dictionary that contains:
+            name         -- An alias or nickname for the JID.
+            subscription -- The subscription type. Can be one of 'to',
+                            'from', 'both', 'none', or 'remove'.
+            groups       -- A list of group names to which the JID
+                            has been assigned.
+
+        Arguments:
+            items -- A dictionary of roster entries.
+        """
+        self.del_items()
+        for jid in items:
+            item = RosterItem()
+            item.values = items[jid]
+            item['jid'] = jid
+            self.append(item)
+        return self
+
+    def get_items(self):
+        """
+        Return a dictionary of roster entries.
+
+        Each item is keyed using its JID, and contains:
+            name         -- An assigned alias or nickname for the JID.
+            subscription -- The subscription type. Can be one of 'to',
+                            'from', 'both', 'none', or 'remove'.
+            groups       -- A list of group names to which the JID has
+                            been assigned.
+        """
+        items = {}
+        for item in self['substanzas']:
+            if isinstance(item, RosterItem):
+                items[item['jid']] = item.values
+                # Remove extra JID reference to keep everything
+                # backward compatible
+                del items[item['jid']]['jid']
+                del items[item['jid']]['lang']
+        return items
+
+    def del_items(self):
+        """
+        Remove all <item> elements from the roster stanza.
+        """
+        for item in self['substanzas']:
+            if isinstance(item, RosterItem):
+                self.xml.remove(item.xml)
+
+
+class RosterItem(ElementBase):
+    namespace = 'jabber:iq:roster'
+    name = 'item'
+    plugin_attrib = 'item'
+    interfaces = set(('jid', 'name', 'subscription', 'ask',
+                      'approved', 'groups'))
+
+    def get_jid(self):
+        return JID(self._get_attr('jid', ''))
+
+    def set_jid(self, jid):
+        self._set_attr('jid', str(jid))
+
+    def get_groups(self):
+        groups = []
+        for group in self.xml.findall('{%s}group' % self.namespace):
+            if group.text:
+                groups.append(group.text)
+            else:
+                groups.append('')
+        return groups
+
+    def set_groups(self, values):
+        self.del_groups()
+        for group in values:
+            group_xml = ET.Element('{%s}group' % self.namespace)
+            group_xml.text = group
+            self.xml.append(group_xml)
+
+    def del_groups(self):
+        for group in self.xml.findall('{%s}group' % self.namespace):
+            self.xml.remove(group)
+
+
+register_stanza_plugin(Iq, Roster)
+register_stanza_plugin(Roster, RosterItem, iterable=True)
+
+# To comply with PEP8, method names now use underscores.
+# Deprecated method names are re-mapped for backwards compatibility.
+Roster.setItems = Roster.set_items
+Roster.getItems = Roster.get_items
+Roster.delItems = Roster.del_items
diff --git a/slixmpp/stanza/stream_error.py b/slixmpp/stanza/stream_error.py
new file mode 100644
index 00000000..d8b8bb5a
--- /dev/null
+++ b/slixmpp/stanza/stream_error.py
@@ -0,0 +1,83 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.stanza.error import Error
+from slixmpp.xmlstream import StanzaBase
+
+
+class StreamError(Error, StanzaBase):
+
+    """
+    XMPP stanzas of type 'error' should include an <error> stanza that
+    describes the nature of the error and how it should be handled.
+
+    Use the 'XEP-0086: Error Condition Mappings' plugin to include error
+    codes used in older XMPP versions.
+
+    The stream:error stanza is used to provide more information for
+    error that occur with the underlying XML stream itself, and not
+    a particular stanza.
+
+    Note: The StreamError stanza is mostly the same as the normal
+          Error stanza, but with different namespaces and
+          condition names.
+
+    Example error stanza:
+        <stream:error>
+          <not-well-formed xmlns="urn:ietf:params:xml:ns:xmpp-streams" />
+          <text xmlns="urn:ietf:params:xml:ns:xmpp-streams">
+            XML was not well-formed.
+          </text>
+        </stream:error>
+
+    Stanza Interface:
+        condition -- The name of the condition element.
+        text      -- Human readable description of the error.
+
+    Attributes:
+        conditions   -- The set of allowable error condition elements.
+        condition_ns -- The namespace for the condition element.
+
+    Methods:
+        setup         -- Overrides ElementBase.setup.
+        get_condition -- Retrieve the name of the condition element.
+        set_condition -- Add a condition element.
+        del_condition -- Remove the condition element.
+        get_text      -- Retrieve the contents of the <text> element.
+        set_text      -- Set the contents of the <text> element.
+        del_text      -- Remove the <text> element.
+    """
+
+    namespace = 'http://etherx.jabber.org/streams'
+    interfaces = set(('condition', 'text', 'see_other_host'))
+    conditions = set((
+        'bad-format', 'bad-namespace-prefix', 'conflict',
+        'connection-timeout', 'host-gone', 'host-unknown',
+        'improper-addressing', 'internal-server-error', 'invalid-from',
+        'invalid-namespace', 'invalid-xml', 'not-authorized',
+        'not-well-formed', 'policy-violation', 'remote-connection-failed',
+        'reset', 'resource-constraint', 'restricted-xml', 'see-other-host',
+        'system-shutdown', 'undefined-condition', 'unsupported-encoding',
+        'unsupported-feature', 'unsupported-stanza-type',
+        'unsupported-version'))
+    condition_ns = 'urn:ietf:params:xml:ns:xmpp-streams'
+
+    def get_see_other_host(self):
+        ns = self.condition_ns
+        return self._get_sub_text('{%s}see-other-host' % ns, '')
+
+    def set_see_other_host(self, value):
+        if value:
+            del self['condition']
+            ns = self.condition_ns
+            return self._set_sub_text('{%s}see-other-host' % ns, value)
+        elif self['condition'] == 'see-other-host':
+            del self['condition']
+
+    def del_see_other_host(self):
+        self._del_sub('{%s}see-other-host' % self.condition_ns)
diff --git a/slixmpp/stanza/stream_features.py b/slixmpp/stanza/stream_features.py
new file mode 100644
index 00000000..4d46b979
--- /dev/null
+++ b/slixmpp/stanza/stream_features.py
@@ -0,0 +1,57 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2010  Nathanael C. Fritz
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.thirdparty import OrderedDict
+from slixmpp.xmlstream import StanzaBase
+
+
+class StreamFeatures(StanzaBase):
+
+    """
+    """
+
+    name = 'features'
+    namespace = 'http://etherx.jabber.org/streams'
+    interfaces = set(('features', 'required', 'optional'))
+    sub_interfaces = interfaces
+    plugin_tag_map = {}
+    plugin_attrib_map = {}
+
+    def setup(self, xml):
+        StanzaBase.setup(self, xml)
+        self.values = self.values
+
+    def get_features(self):
+        """
+        """
+        features = OrderedDict()
+        for (name, lang), plugin in self.plugins.items():
+            features[name] = plugin
+        return features
+
+    def set_features(self, value):
+        """
+        """
+        pass
+
+    def del_features(self):
+        """
+        """
+        pass
+
+    def get_required(self):
+        """
+        """
+        features = self['features']
+        return [f for n, f in features.items() if f['required']]
+
+    def get_optional(self):
+        """
+        """
+        features = self['features']
+        return [f for n, f in features.items() if not f['required']]