9e248bb852
xep_0030 still referenced event_handlers. Added the method event_handled which will return the number of registered handlers for an event to resolve the issue.
325 lines
11 KiB
Python
325 lines
11 KiB
Python
"""
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SleekXMPP: The Sleek XMPP Library
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Copyright (C) 2010 Nathanael C. Fritz, Lance J.T. Stout
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This file is part of SleekXMPP.
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See the file LICENSE for copying permission.
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"""
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import logging
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from . import base
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from .. xmlstream.handler.callback import Callback
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from .. xmlstream.matcher.xpath import MatchXPath
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from .. xmlstream.stanzabase import registerStanzaPlugin, ElementBase, ET, JID
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from .. stanza.iq import Iq
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class DiscoInfo(ElementBase):
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namespace = 'http://jabber.org/protocol/disco#info'
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name = 'query'
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plugin_attrib = 'disco_info'
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interfaces = set(('node', 'features', 'identities'))
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def getFeatures(self):
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features = []
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featuresXML = self.xml.findall('{%s}feature' % self.namespace)
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for feature in featuresXML:
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features.append(feature.attrib['var'])
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return features
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def setFeatures(self, features):
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self.delFeatures()
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for name in features:
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self.addFeature(name)
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def delFeatures(self):
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featuresXML = self.xml.findall('{%s}feature' % self.namespace)
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for feature in featuresXML:
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self.xml.remove(feature)
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def addFeature(self, feature):
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featureXML = ET.Element('{%s}feature' % self.namespace,
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{'var': feature})
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self.xml.append(featureXML)
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def delFeature(self, feature):
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featuresXML = self.xml.findall('{%s}feature' % self.namespace)
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for featureXML in featuresXML:
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if featureXML.attrib['var'] == feature:
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self.xml.remove(featureXML)
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def getIdentities(self):
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ids = []
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idsXML = self.xml.findall('{%s}identity' % self.namespace)
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for idXML in idsXML:
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idData = (idXML.attrib['category'],
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idXML.attrib['type'],
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idXML.attrib.get('name', ''))
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ids.append(idData)
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return ids
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def setIdentities(self, ids):
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self.delIdentities()
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for idData in ids:
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self.addIdentity(*idData)
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def delIdentities(self):
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idsXML = self.xml.findall('{%s}identity' % self.namespace)
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for idXML in idsXML:
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self.xml.remove(idXML)
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def addIdentity(self, category, id_type, name=''):
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idXML = ET.Element('{%s}identity' % self.namespace,
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{'category': category,
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'type': id_type,
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'name': name})
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self.xml.append(idXML)
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def delIdentity(self, category, id_type, name=''):
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idsXML = self.xml.findall('{%s}identity' % self.namespace)
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for idXML in idsXML:
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idData = (idXML.attrib['category'],
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idXML.attrib['type'])
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delId = (category, id_type)
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if idData == delId:
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self.xml.remove(idXML)
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class DiscoItems(ElementBase):
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namespace = 'http://jabber.org/protocol/disco#items'
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name = 'query'
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plugin_attrib = 'disco_items'
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interfaces = set(('node', 'items'))
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def getItems(self):
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items = []
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itemsXML = self.xml.findall('{%s}item' % self.namespace)
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for item in itemsXML:
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itemData = (item.attrib['jid'],
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item.attrib.get('node'),
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item.attrib.get('name'))
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items.append(itemData)
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return items
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def setItems(self, items):
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self.delItems()
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for item in items:
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self.addItem(*item)
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def delItems(self):
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itemsXML = self.xml.findall('{%s}item' % self.namespace)
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for item in itemsXML:
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self.xml.remove(item)
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def addItem(self, jid, node='', name=''):
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itemXML = ET.Element('{%s}item' % self.namespace, {'jid': jid})
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if name:
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itemXML.attrib['name'] = name
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if node:
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itemXML.attrib['node'] = node
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self.xml.append(itemXML)
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def delItem(self, jid, node=''):
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itemsXML = self.xml.findall('{%s}item' % self.namespace)
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for itemXML in itemsXML:
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itemData = (itemXML.attrib['jid'],
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itemXML.attrib.get('node', ''))
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itemDel = (jid, node)
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if itemData == itemDel:
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self.xml.remove(itemXML)
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class DiscoNode(object):
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"""
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Collection object for grouping info and item information
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into nodes.
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"""
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def __init__(self, name):
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self.name = name
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self.info = DiscoInfo()
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self.items = DiscoItems()
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self.info['node'] = name
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self.items['node'] = name
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# This is a bit like poor man's inheritance, but
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# to simplify adding information to the node we
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# map node functions to either the info or items
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# stanza objects.
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#
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# We don't want to make DiscoNode inherit from
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# DiscoInfo and DiscoItems because DiscoNode is
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# not an actual stanza, and doing so would create
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# confusion and potential bugs.
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self._map(self.items, 'items', ['get', 'set', 'del'])
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self._map(self.items, 'item', ['add', 'del'])
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self._map(self.info, 'identities', ['get', 'set', 'del'])
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self._map(self.info, 'identity', ['add', 'del'])
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self._map(self.info, 'features', ['get', 'set', 'del'])
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self._map(self.info, 'feature', ['add', 'del'])
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def isEmpty(self):
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"""
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Test if the node contains any information. Useful for
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determining if a node can be deleted.
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"""
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ids = self.getIdentities()
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features = self.getFeatures()
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items = self.getItems()
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if not ids and not features and not items:
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return True
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return False
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def _map(self, obj, interface, access):
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"""
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Map functions of the form obj.accessInterface
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to self.accessInterface for each given access type.
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"""
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interface = interface.title()
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for access_type in access:
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method = access_type + interface
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if hasattr(obj, method):
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setattr(self, method, getattr(obj, method))
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class xep_0030(base.base_plugin):
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"""
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XEP-0030 Service Discovery
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"""
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def plugin_init(self):
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self.xep = '0030'
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self.description = 'Service Discovery'
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self.xmpp.registerHandler(
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Callback('Disco Items',
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MatchXPath('{%s}iq/{%s}query' % (self.xmpp.default_ns,
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DiscoItems.namespace)),
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self.handle_item_query))
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self.xmpp.registerHandler(
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Callback('Disco Info',
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MatchXPath('{%s}iq/{%s}query' % (self.xmpp.default_ns,
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DiscoInfo.namespace)),
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self.handle_info_query))
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registerStanzaPlugin(Iq, DiscoInfo)
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registerStanzaPlugin(Iq, DiscoItems)
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self.xmpp.add_event_handler('disco_items_request', self.handle_disco_items)
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self.xmpp.add_event_handler('disco_info_request', self.handle_disco_info)
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self.nodes = {'main': DiscoNode('main')}
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def add_node(self, node):
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if node not in self.nodes:
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self.nodes[node] = DiscoNode(node)
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def del_node(self, node):
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if node in self.nodes:
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del self.nodes[node]
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def handle_item_query(self, iq):
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if iq['type'] == 'get':
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logging.debug("Items requested by %s" % iq['from'])
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self.xmpp.event('disco_items_request', iq)
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elif iq['type'] == 'result':
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logging.debug("Items result from %s" % iq['from'])
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self.xmpp.event('disco_items', iq)
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def handle_info_query(self, iq):
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if iq['type'] == 'get':
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logging.debug("Info requested by %s" % iq['from'])
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self.xmpp.event('disco_info_request', iq)
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elif iq['type'] == 'result':
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logging.debug("Info result from %s" % iq['from'])
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self.xmpp.event('disco_info', iq)
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def handle_disco_info(self, iq, forwarded=False):
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"""
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A default handler for disco#info requests. If another
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handler is registered, this one will defer and not run.
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"""
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if not forwarded and self.xmpp.event_handled('disco_info_request'):
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return
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node_name = iq['disco_info']['node']
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if not node_name:
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node_name = 'main'
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logging.debug("Using default handler for disco#info on node '%s'." % node_name)
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if node_name in self.nodes:
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node = self.nodes[node_name]
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iq.reply().setPayload(node.info.xml).send()
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else:
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logging.debug("Node %s requested, but does not exist." % node_name)
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iq.reply().error().setPayload(iq['disco_info'].xml)
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iq['error']['code'] = '404'
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iq['error']['type'] = 'cancel'
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iq['error']['condition'] = 'item-not-found'
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iq.send()
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def handle_disco_items(self, iq, forwarded=False):
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"""
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A default handler for disco#items requests. If another
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handler is registered, this one will defer and not run.
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If this handler is called by your own custom handler with
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forwarded set to True, then it will run as normal.
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"""
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if not forwarded and self.xmpp.event_handled('disco_items_request'):
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return
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node_name = iq['disco_items']['node']
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if not node_name:
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node_name = 'main'
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logging.debug("Using default handler for disco#items on node '%s'." % node_name)
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if node_name in self.nodes:
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node = self.nodes[node_name]
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iq.reply().setPayload(node.items.xml).send()
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else:
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logging.debug("Node %s requested, but does not exist." % node_name)
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iq.reply().error().setPayload(iq['disco_items'].xml)
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iq['error']['code'] = '404'
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iq['error']['type'] = 'cancel'
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iq['error']['condition'] = 'item-not-found'
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iq.send()
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# Older interface methods for backwards compatibility
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def getInfo(self, jid, node='', dfrom=None):
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iq = self.xmpp.Iq()
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iq['type'] = 'get'
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iq['to'] = jid
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iq['from'] = dfrom
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iq['disco_info']['node'] = node
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return iq.send()
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def getItems(self, jid, node='', dfrom=None):
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iq = self.xmpp.Iq()
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iq['type'] = 'get'
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iq['to'] = jid
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iq['from'] = dfrom
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iq['disco_items']['node'] = node
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return iq.send()
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def add_feature(self, feature, node='main'):
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self.add_node(node)
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self.nodes[node].addFeature(feature)
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def add_identity(self, category='', itype='', name='', node='main'):
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self.add_node(node)
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self.nodes[node].addIdentity(category=category,
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id_type=itype,
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name=name)
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def add_item(self, jid=None, name='', node='main', subnode=''):
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self.add_node(node)
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self.add_node(subnode)
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if jid is None:
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jid = self.xmpp.fulljid
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self.nodes[node].addItem(jid=jid, name=name, node=subnode)
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