diff options
Diffstat (limited to 'sleekxmpp/plugins/xep_0047/ibb.py')
| -rw-r--r-- | sleekxmpp/plugins/xep_0047/ibb.py | 107 |
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..62dddac2 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._stream_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'](iq['to'], sid, iq['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') |