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-rw-r--r--sleekxmpp/plugins/xep_0047/ibb.py107
1 files changed, 79 insertions, 28 deletions
diff --git a/sleekxmpp/plugins/xep_0047/ibb.py b/sleekxmpp/plugins/xep_0047/ibb.py
index e341433f..6110b26c 100644
--- a/sleekxmpp/plugins/xep_0047/ibb.py
+++ b/sleekxmpp/plugins/xep_0047/ibb.py
@@ -21,18 +21,21 @@ class XEP_0047(BasePlugin):
dependencies = set(['xep_0030'])
stanza = stanza
default_config = {
+ 'block_size': 4096,
'max_block_size': 8192,
'window_size': 1,
- 'auto_accept': True,
- 'accept_stream': None
+ 'auto_accept': False,
}
def plugin_init(self):
- self.streams = {}
- self.pending_streams = {}
- self.pending_close_streams = {}
+ self._streams = {}
+ self._pending_streams = {}
+ self._pending_lock = threading.Lock()
self._stream_lock = threading.Lock()
+ self._preauthed_sids_lock = threading.Lock()
+ self._preauthed_sids = {}
+
register_stanza_plugin(Iq, Open)
register_stanza_plugin(Iq, Close)
register_stanza_plugin(Iq, Data)
@@ -58,6 +61,13 @@ class XEP_0047(BasePlugin):
StanzaPath('message/ibb_data'),
self._handle_data))
+ self.api.register(self._authorized, 'authorized', default=True)
+ self.api.register(self._authorized_sid, 'authorized_sid', default=True)
+ self.api.register(self._preauthorize_sid, 'preauthorize_sid', default=True)
+ self.api.register(self._get_stream, 'get_stream', default=True)
+ self.api.register(self._set_stream, 'set_stream', default=True)
+ self.api.register(self._del_stream, 'del_stream', default=True)
+
def plugin_end(self):
self.xmpp.remove_handler('IBB Open')
self.xmpp.remove_handler('IBB Close')
@@ -68,18 +78,49 @@ class XEP_0047(BasePlugin):
def session_bind(self, jid):
self.xmpp['xep_0030'].add_feature('http://jabber.org/protocol/ibb')
+ def _get_stream(self, jid, sid, peer_jid, data):
+ return self._streams.get((jid, sid, peer_jid), None)
+
+ def _set_stream(self, jid, sid, peer_jid, stream):
+ self._streams[(jid, sid, peer_jid)] = stream
+
+ def _del_stream(self, jid, sid, peer_jid, data):
+ with self._streams_lock:
+ if (jid, sid, peer_jid) in self._streams:
+ del self._streams[(jid, sid, peer_jid)]
+
def _accept_stream(self, iq):
- if self.accept_stream is not None:
- return self.accept_stream(iq)
+ receiver = iq['to']
+ sender = iq['from']
+ sid = iq['ibb_open']['sid']
+
+ if self.api['authorized_sid'](receiver, sid, sender, iq):
+ return True
+ return self.api['authorized'](receiver, sid, sender, iq)
+
+ def _authorized(self, jid, sid, ifrom, iq):
if self.auto_accept:
if iq['ibb_open']['block_size'] <= self.max_block_size:
return True
return False
- def open_stream(self, jid, block_size=4096, sid=None, window=1, use_messages=False,
+ def _authorized_sid(self, jid, sid, ifrom, iq):
+ with self._preauthed_sids_lock:
+ if (jid, sid, ifrom) in self._preauthed_sids:
+ del self._preauthed_sids[(jid, sid, ifrom)]
+ return True
+ return False
+
+ def _preauthorize_sid(self, jid, sid, ifrom, data):
+ with self._preauthed_sids_lock:
+ self._preauthed_sids[(jid, sid, ifrom)] = True
+
+ def open_stream(self, jid, block_size=None, sid=None, window=1, use_messages=False,
ifrom=None, block=True, timeout=None, callback=None):
if sid is None:
sid = str(uuid.uuid4())
+ if block_size is None:
+ block_size = self.block_size
iq = self.xmpp.Iq()
iq['type'] = 'set'
@@ -90,13 +131,13 @@ class XEP_0047(BasePlugin):
iq['ibb_open']['stanza'] = 'iq'
stream = IBBytestream(self.xmpp, sid, block_size,
- iq['to'], iq['from'], window,
+ iq['from'], iq['to'], window,
use_messages)
with self._stream_lock:
- self.pending_streams[iq['id']] = stream
+ self._pending_streams[iq['id']] = stream
- self.pending_streams[iq['id']] = stream
+ self._pending_streams[iq['id']] = stream
if block:
resp = iq.send(timeout=timeout)
@@ -116,49 +157,59 @@ class XEP_0047(BasePlugin):
def _handle_opened_stream(self, iq):
if iq['type'] == 'result':
with self._stream_lock:
- stream = self.pending_streams.get(iq['id'], None)
- if stream is not None:
- stream.sender = iq['to']
- stream.receiver = iq['from']
- stream.stream_started.set()
- self.streams[stream.sid] = stream
- self.xmpp.event('ibb_stream_start', stream)
+ stream = self._pending_streams.get(iq['id'], None)
+ if stream is not None:
+ log.debug('IBB stream (%s) accepted by %s', stream.sid, iq['from'])
+ stream.self_jid = iq['to']
+ stream.peer_jid = iq['from']
+ stream.stream_started.set()
+ self.api['set_stream'](stream.self_jid, stream.sid, stream.peer_jid, stream)
+ self.xmpp.event('ibb_stream_start', stream)
+ self.xmpp.event('stream:%s:%s' % (stream.sid, stream.peer_jid), stream)
with self._stream_lock:
- if iq['id'] in self.pending_streams:
- del self.pending_streams[iq['id']]
+ if iq['id'] in self._pending_streams:
+ del self._pending_streams[iq['id']]
def _handle_open_request(self, iq):
sid = iq['ibb_open']['sid']
- size = iq['ibb_open']['block_size']
+ size = iq['ibb_open']['block_size'] or self.block_size
+
+ log.debug('Received IBB stream request from %s', iq['from'])
+
+ if not sid:
+ raise XMPPError(etype='modify', condition='bad-request')
+
if not self._accept_stream(iq):
- raise XMPPError('not-acceptable')
+ raise XMPPError(etype='modify', condition='not-acceptable')
if size > self.max_block_size:
raise XMPPError('resource-constraint')
stream = IBBytestream(self.xmpp, sid, size,
- iq['from'], iq['to'],
+ iq['to'], iq['from'],
self.window_size)
stream.stream_started.set()
- self.streams[sid] = stream
+ self.api['set_stream'](stream.self_jid, stream.sid, stream.peer_jid, stream)
iq.reply()
iq.send()
self.xmpp.event('ibb_stream_start', stream)
+ self.xmpp.event('stream:%s:%s' % (sid, stream.peer_jid), stream)
def _handle_data(self, stanza):
sid = stanza['ibb_data']['sid']
- stream = self.streams.get(sid, None)
- if stream is not None and stanza['from'] != stream.sender:
+ stream = self.api['get_stream'](stanza['to'], sid, stanza['from'])
+ if stream is not None and stanza['from'] == stream.peer_jid:
stream._recv_data(stanza)
else:
raise XMPPError('item-not-found')
def _handle_close(self, iq):
sid = iq['ibb_close']['sid']
- stream = self.streams.get(sid, None)
- if stream is not None and iq['from'] != stream.sender:
+ stream = self.api['get_stream'](stanza['to'], sid, stanza['from'])
+ if stream is not None and iq['from'] == stream.peer_jid:
stream._closed(iq)
+ self.api['del_stream'](stream.self_jid, stream.sid, stream.peer_jid)
else:
raise XMPPError('item-not-found')