""" 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.stanzabase import StanzaBase, ET 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: reply -- Overrides StanzaBase.reply setShow -- Set the value of the <show> element. getType -- Get the value of the type attribute or <show> element. setType -- Set the value of the type attribute or <show> element. getPriority -- Get the value of the <priority> element. setPriority -- Set the value of the <priority> element. """ namespace = 'jabber:client' name = 'presence' interfaces = set(('type', 'to', 'from', 'id', 'show', 'status', 'priority')) sub_interfaces = set(('show', 'status', 'priority')) plugin_attrib = name types = set(('available', 'unavailable', 'error', 'probe', 'subscribe', 'subscribed', 'unsubscribe', 'unsubscribed')) showtypes = set(('dnd', 'chat', 'xa', 'away')) def setShow(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._delSub('show') elif show in self.showtypes: self._setSubText('show', text=show) return self def setType(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._setAttr('type', value) elif value in self.showtypes: self['show'] = value return self def delType(self): """ Remove both the type attribute and the <show> element. """ self._delAttr('type') self._delSub('show') def setPriority(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._setSubText('priority', text=str(value)) def getPriority(self): """ Return the value of the <presence> element as an integer. """ p = self._getSubText('priority') if not p: p = 0 return int(p) def getType(self): """ Return the value of the <presence> stanza's type attribute, or the value of the <show> element. """ out = self._getAttr('type') if not out: out = self['show'] if not out or out is None: out = 'available' return out def reply(self): """ Set the appropriate presence reply type. Overrides StanzaBase.reply. """ if self['type'] == 'unsubscribe': self['type'] = 'unsubscribed' elif self['type'] == 'subscribe': self['type'] = 'subscribed' return StanzaBase.reply(self)