diff options
Diffstat (limited to 'sleekxmpp/stanza/iq.py')
| -rw-r--r-- | sleekxmpp/stanza/iq.py | 233 |
1 files changed, 165 insertions, 68 deletions
diff --git a/sleekxmpp/stanza/iq.py b/sleekxmpp/stanza/iq.py index daf05b43..c735ae64 100644 --- a/sleekxmpp/stanza/iq.py +++ b/sleekxmpp/stanza/iq.py @@ -5,73 +5,170 @@ See the file LICENSE for copying permission. """ -from .. xmlstream.stanzabase import StanzaBase -from xml.etree import cElementTree as ET -from . error import Error -from .. xmlstream.handler.waiter import Waiter -from .. xmlstream.matcher.id import MatcherId -from . rootstanza import RootStanza + +from sleekxmpp.stanza import Error +from sleekxmpp.stanza.rootstanza import RootStanza +from sleekxmpp.xmlstream import RESPONSE_TIMEOUT +from sleekxmpp.xmlstream.stanzabase import StanzaBase, ET +from sleekxmpp.xmlstream.handler import Waiter +from sleekxmpp.xmlstream.matcher import MatcherId + class Iq(RootStanza): - interfaces = set(('type', 'to', 'from', 'id','query')) - types = set(('get', 'result', 'set', 'error')) - name = 'iq' - plugin_attrib = name - namespace = 'jabber:client' - - def __init__(self, *args, **kwargs): - StanzaBase.__init__(self, *args, **kwargs) - if self['id'] == '': - if self.stream is not None: - self['id'] = self.stream.getNewId() - else: - self['id'] = '0' - - def unhandled(self): - 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 setPayload(self, value): - self.clear() - StanzaBase.setPayload(self, value) - return self - - def setQuery(self, value): - query = self.xml.find("{%s}query" % value) - if query is None and value: - self.clear() - query = ET.Element("{%s}query" % value) - self.xml.append(query) - return self - - def getQuery(self): - for child in self.xml.getchildren(): - if child.tag.endswith('query'): - ns =child.tag.split('}')[0] - if '{' in ns: - ns = ns[1:] - return ns - return '' - - def reply(self): - self['type'] = 'result' - StanzaBase.reply(self) - return self - - def delQuery(self): - for child in self.getchildren(): - if child.tag.endswith('query'): - self.xml.remove(child) - return self - - def send(self, block=True, timeout=10): - if block and self['type'] in ('get', 'set'): - waitfor = Waiter('IqWait_%s' % self['id'], MatcherId(self['id'])) - self.stream.registerHandler(waitfor) - StanzaBase.send(self) - return waitfor.wait(timeout) - else: - return StanzaBase.send(self) + + """ + 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. + + Methods: + __init__ -- Overrides StanzaBase.__init__. + unhandled -- Send error if there are no handlers. + setPayload -- Overrides StanzaBase.setPayload. + setQuery -- Add or modify a <query> element. + getQuery -- Return the namespace of the <query> element. + delQuery -- 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.getNewId() + 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 setPayload(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.setPayload(self, value) + return self + + def setQuery(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: + self.clear() + query = ET.Element("{%s}query" % value) + self.xml.append(query) + return self + + def getQuery(self): + """Return the namespace of the <query> element.""" + for child in self.xml.getchildren(): + if child.tag.endswith('query'): + ns = child.tag.split('}')[0] + if '{' in ns: + ns = ns[1:] + return ns + return '' + + def delQuery(self): + """Remove the <query> element.""" + for child in self.xml.getchildren(): + if child.tag.endswith('query'): + self.xml.remove(child) + return self + + def reply(self): + """ + Send a reply <iq> stanza. + + Overrides StanzaBase.reply + + Sets the 'type' to 'result' in addition to the default + StanzaBase.reply behavior. + """ + self['type'] = 'result' + StanzaBase.reply(self) + return self + + def send(self, block=True, timeout=RESPONSE_TIMEOUT): + """ + 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. + + 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 sleekxmpp.xmlstream.RESPONSE_TIMEOUT + """ + if block and self['type'] in ('get', 'set'): + waitfor = Waiter('IqWait_%s' % self['id'], MatcherId(self['id'])) + self.stream.registerHandler(waitfor) + StanzaBase.send(self) + return waitfor.wait(timeout) + else: + return StanzaBase.send(self) |