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SleekXMPP/sleekxmpp/stanza/message.py
Lance Stout d8d9e8df16 Fix stanza clobbering when replying to errors.
If a stanza handler raised an exception, the exception was processed
and replied by the modified stanza, not a stanza with the original
content.

A copy is now made before handler processing, and if an exception occurs
it is the copy that processes the exception using the original content.
2011-06-20 16:25:56 -07:00

157 lines
4.7 KiB
Python

"""
SleekXMPP: The Sleek XMPP Library
Copyright (C) 2010 Nathanael C. Fritz
This file is part of SleekXMPP.
See the file LICENSE for copying permission.
"""
from sleekxmpp.stanza import Error
from sleekxmpp.stanza.rootstanza import RootStanza
from sleekxmpp.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.
"""
namespace = 'jabber:client'
name = 'message'
interfaces = set(('type', 'to', 'from', 'id', 'body', 'subject',
'mucroom', 'mucnick'))
sub_interfaces = set(('body', 'subject'))
plugin_attrib = name
types = set((None, 'normal', 'chat', 'headline', 'error', 'groupchat'))
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 chat(self):
"""Set the message type to 'chat'."""
self['type'] = 'chat'
return self
def normal(self):
"""Set the message type to 'chat'."""
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.
"""
StanzaBase.reply(self, clear)
if self['type'] == 'groupchat':
self['to'] = self['to'].bare
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