diff options
Diffstat (limited to 'sleekxmpp/plugins')
| -rw-r--r-- | sleekxmpp/plugins/xep_0115/caps.py | 50 |
1 files changed, 28 insertions, 22 deletions
diff --git a/sleekxmpp/plugins/xep_0115/caps.py b/sleekxmpp/plugins/xep_0115/caps.py index 8bad1410..1d8d9e42 100644 --- a/sleekxmpp/plugins/xep_0115/caps.py +++ b/sleekxmpp/plugins/xep_0115/caps.py @@ -9,8 +9,9 @@ import logging import hashlib import base64 +import threading -import sleekxmpp +from sleekxmpp import __version__ from sleekxmpp.stanza import StreamFeatures, Presence, Iq from sleekxmpp.xmlstream import register_stanza_plugin, JID from sleekxmpp.xmlstream.handler import Callback @@ -45,8 +46,7 @@ class XEP_0115(BasePlugin): 'md5': hashlib.md5} if self.caps_node is None: - ver = sleekxmpp.__version__ - self.caps_node = 'http://sleekxmpp.com/ver/%s' % ver + self.caps_node = 'http://sleekxmpp.com/ver/%s' % __version__ register_stanza_plugin(Presence, stanza.Capabilities) register_stanza_plugin(StreamFeatures, stanza.Capabilities) @@ -90,6 +90,9 @@ class XEP_0115(BasePlugin): disco.assign_verstring = self.assign_verstring disco.get_verstring = self.get_verstring + self._processing_lock = threading.Lock() + self._processing = set() + def plugin_end(self): self.xmpp['xep_0030'].del_feature(feature=stanza.Capabilities.namespace) self.xmpp.del_filter('out', self._filter_add_caps) @@ -139,13 +142,15 @@ class XEP_0115(BasePlugin): self.xmpp.event('entity_caps_legacy', pres) return + ver = pres['caps']['ver'] + existing_verstring = self.get_verstring(pres['from'].full) - if str(existing_verstring) == str(pres['caps']['ver']): + if str(existing_verstring) == str(ver): return - existing_caps = self.get_caps(verstring=pres['caps']['ver']) + existing_caps = self.get_caps(verstring=ver) if existing_caps is not None: - self.assign_verstring(pres['from'], pres['caps']['ver']) + self.assign_verstring(pres['from'], ver) return if pres['caps']['hash'] not in self.hashes: @@ -156,9 +161,16 @@ class XEP_0115(BasePlugin): except XMPPError: return - log.debug("New caps verification string: %s", pres['caps']['ver']) + # Only lookup the same caps once at a time. + with self._processing_lock: + if ver in self._processing: + log.debug('Already processing verstring %s' % ver) + return + self._processing.add(ver) + + log.debug("New caps verification string: %s", ver) try: - node = '%s#%s' % (pres['caps']['node'], pres['caps']['ver']) + node = '%s#%s' % (pres['caps']['node'], ver) caps = self.xmpp['xep_0030'].get_info(pres['from'], node) if isinstance(caps, Iq): @@ -168,7 +180,10 @@ class XEP_0115(BasePlugin): pres['caps']['ver']): self.assign_verstring(pres['from'], pres['caps']['ver']) except XMPPError: - log.debug("Could not retrieve disco#info results for caps") + log.debug("Could not retrieve disco#info results for caps for %s", node) + + with self._processing_lock: + self._processing.remove(ver) def _validate_caps(self, caps, hash, check_verstring): # Check Identities @@ -179,7 +194,6 @@ class XEP_0115(BasePlugin): return False # Check Features - full_features = caps.get_features(dedupe=False) deduped_features = caps.get_features() if len(full_features) != len(deduped_features): @@ -272,7 +286,7 @@ class XEP_0115(BasePlugin): binary = hash(S.encode('utf8')).digest() return base64.b64encode(binary).decode('utf-8') - def update_caps(self, jid=None, node=None): + def update_caps(self, jid=None, node=None, preserve=False): try: info = self.xmpp['xep_0030'].get_info(jid, node, local=True) if isinstance(info, Iq): @@ -286,19 +300,11 @@ class XEP_0115(BasePlugin): self.assign_verstring(jid, ver) if self.xmpp.session_started_event.is_set() and self.broadcast: - # Check if we've sent directed presence. If we haven't, we - # can just send a normal presence stanza. If we have, then - # we will send presence to each contact individually so - # that we don't clobber existing statuses. - directed = False or self.xmpp.is_component - for contact in self.xmpp.roster[jid]: - if self.xmpp.roster[jid][contact].last_status is not None: - directed = True - if not directed: - self.xmpp.roster[jid].send_last_presence() - else: + if self.xmpp.is_component or preserve: for contact in self.xmpp.roster[jid]: self.xmpp.roster[jid][contact].send_last_presence() + else: + self.xmpp.roster[jid].send_last_presence() except XMPPError: return |