This file is indexed.

/usr/share/pyshared/bluetooth/widcomm.py is in python-bluez 0.18-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
from btcommon import *
import socket
import struct
import threading
import os
import _widcomm

DEFAULT_MTU = 672

def dbg (*args):
    return
    sys.stdout.write (*args)
    sys.stdout.write ("\n")

def BD_ADDR_to_str (bda):
    return "%02X:%02X:%02X:%02X:%02X:%02X" % \
            (ord(bda[0]), ord(bda[1]), ord(bda[2]), 
             ord(bda[3]), ord(bda[4]), ord(bda[5])) 

def str_to_BD_ADDR (s):
    digits = [ int (c, 16) for c in s.split(":") ]
    return struct.pack ("6B", *digits)

class WCInquirer:
    DEVST_DOWN     = 0
    DEVST_UP       = 1
    DEVST_ERROR    = 2
    DEVST_UNLOADED = 3
    DEVST_RELOADED = 4
    
    def __init__ (self):
        self._wcinq = _widcomm._WCInquirer ()

        port = self._wcinq.get_sockport ()

        self.readsock = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
        self.readsock.connect (("127.0.0.1", port))
        self._wcinq.accept_client ()
        
        self.recently_discovered = []
        self.inquiry_in_progress = False
        self.sdp_query_in_progress = False

    def fileno ():
        return self.readsock.fileno ()

    def start_inquiry (self):
        self.recently_discovered = []
        self.inquiry_in_progress = self._wcinq.start_inquiry ()

    def read_msg (self):
        intsize = struct.calcsize ("=i")
        msg_type = struct.unpack ("=i", self.readsock.recv (intsize))[0]

        if msg_type == _widcomm.INQ_DEVICE_RESPONDED:
            fmt = "=6s3s248si"
            data = self.readsock.recv (struct.calcsize (fmt))
            bda, devclass, bdname, connected = struct.unpack (fmt, data)

            bdaddr = BD_ADDR_to_str (bda)
            bdname = bdname.strip ("\0")
            self.recently_discovered.append ((bdaddr, devclass, bdname, 
                    connected))

        elif msg_type == _widcomm.INQ_INQUIRY_COMPLETE:
            fmt = "=ih"
            data = self.readsock.recv (struct.calcsize (fmt))
            success, num_responses = struct.unpack (fmt, data)

            self.inquiry_in_progress = False

        elif msg_type == _widcomm.INQ_DISCOVERY_COMPLETE:
            self.sdp_query_in_progress = False

        elif msg_type == _widcomm.INQ_STACK_STATUS_CHANGE:
            fmt = "=i"
            data = self.readsock.recv (struct.calcsize (fmt))
            new_status = struct.unpack (fmt, data)[0]

    def start_discovery (self, addr, uuid = None):
        bd_addr = str_to_BD_ADDR (addr)
        if uuid is not None:
            self.sdp_query_in_progress = \
                    self._wcinq.start_discovery (bd_addr, to_full_uuid (uuid))
        else:
            self.sdp_query_in_progress = \
                    self._wcinq.start_discovery (bd_addr)
        self.sdp_query_in_progress = True

    def read_discovery_records (self, addr, uuid = None):
        if not is_valid_address (addr):
            raise ValueError ("invalid Bluetooth address")
        bd_addr = str_to_BD_ADDR (addr)
        if uuid is not None:
            dbg ("read_discovery_records (%s, %s)" % (addr, uuid))
            return self._wcinq.read_discovery_records (bd_addr,
                    to_full_uuid (uuid))
        else:
            return self._wcinq.read_discovery_records (bd_addr)

    def is_device_ready (self):
        return self._wcinq.is_device_ready ()

    def get_local_device_address (self):
        return self._wcinq.get_local_device_address ()

inquirer = WCInquirer ()

def discover_devices (duration=8, flush_cache=True, lookup_names=False):
    inquirer.start_inquiry ()

    while inquirer.inquiry_in_progress:
        inquirer.read_msg ()

    discovered = inquirer.recently_discovered[:]

    if not lookup_names:
        return [ tup[0] for tup in discovered ]
    if lookup_names:
        result = []
        for bdaddr, devClass, bdName, bConnected in discovered:
            if bdName:
                result.append ((bdaddr, bdName))
            else:
                result.append ((bdAddr, None))
        return result

def lookup_name (address, timeout=10):
    discover_devices ()
    for bdaddr, devClass, bdName, bConnected in inquirer.recently_discovered:
        if bdaddr == address:
            return bdName

def advertise_service (sock, name, service_id = "", service_classes = [], \
        profiles = [], provider = "", description = "", protocols = []):
    sock._advertise_service (name, service_id, service_classes,
            profiles, provider, description, protocols)

def stop_advertising (sock):
    sock._stop_advertising ()

def find_service (name = None, uuid = None, address = None):
    if address:
        if address == "localhost": raise NotImplementedError
        if not is_valid_address (address):
            raise ValueError ("invalid Bluetooth address")
        addresses = [ address ]
    else:
        addresses = discover_devices ()

    if uuid and not is_valid_uuid (uuid):
        raise ValueError ("invalid uuid ", uuid)

    results = []
    for addr in addresses:
        inquirer.start_discovery (addr, uuid)
        while inquirer.sdp_query_in_progress:
            inquirer.read_msg ()
        results.extend (inquirer.read_discovery_records (addr, uuid))

    return results

def _port_return_code_to_str (code):
    k = { _widcomm.RFCOMM_SUCCESS : "Success",
          _widcomm.RFCOMM_ALREADY_OPENED : "Port already opened",
          _widcomm.RFCOMM_NOT_OPENED : "Connection not open",
          _widcomm.RFCOMM_HANDLE_ERROR: "This error should never occur " \
                                        "(HANDLE_ERROR) and is a stack bug",
          _widcomm.RFCOMM_LINE_ERR: "Line error",
          _widcomm.RFCOMM_START_FAILED: "Connection attempt failed",
          _widcomm.RFCOMM_PAR_NEG_FAILED: "Parameter negotion (MTU) failed",
          _widcomm.RFCOMM_PORT_NEG_FAILED: "Port negotiation failed",
          _widcomm.RFCOMM_PEER_CONNECTION_FAILED: "Connection ended by remote "\
                                                  "side",
          _widcomm.RFCOMM_PEER_TIMEOUT: "Timeout by remote side",
          _widcomm.RFCOMM_INVALID_PARAMETER: "Invalid parameter",
          _widcomm.RFCOMM_UNKNOWN_ERROR: "Unknown error" }
    if code in k:
        return k[code]
    else:
        return "Invalid RFCOMM error code %s" % str (code)

def _port_ev_code_to_str (code):
    d = { _widcomm.PORT_EV_RXFLAG : "Received certain character",
          _widcomm.PORT_EV_TXEMPTY : "Transmit Queue Empty",
          _widcomm.PORT_EV_CTS : "CTS changed state",
          _widcomm.PORT_EV_DSR : "DSR changed state",
          _widcomm.PORT_EV_RLSD : "RLSD changed state",
          _widcomm.PORT_EV_BREAK : "BREAK received",
          _widcomm.PORT_EV_ERR : "Line status error occurred",
          _widcomm.PORT_EV_RING : "Ring signal detected",
          _widcomm.PORT_EV_CTSS : "CTS state",
          _widcomm.PORT_EV_DSRS : "DSR state",
          _widcomm.PORT_EV_RLSDS : "RLSD state",
          _widcomm.PORT_EV_OVERRUN : "Receiver buffer overrun",
          _widcomm.PORT_EV_TXCHAR : "Any character transmitted",
          _widcomm.PORT_EV_CONNECTED : "RFCOMM connection established",
          _widcomm.PORT_EV_CONNECT_ERR : "Was not able to establish " \
                                         "connection or disconnected",
          _widcomm.PORT_EV_FC : "Flow control enabled flag changed by remote",
          _widcomm.PORT_EV_FCS : "Flow control status true = enabled" }
    result = []
    for k, v in d.items ():
        if code & k:
            result.append (v)
    if len (result) == 0:
        return "Invalid event code %d" % code
    else:
        return "\n".join (result)

def _sdp_checkraise (code):
    if code == _widcomm.SDP_OK: return
    elif code == _widcomm.SDP_COULD_NOT_ADD_RECORD:
        raise BluetoothError ("Could not add SDP record")
    elif code == _widcomm.SDP_INVALID_RECORD:
        raise BluetoothError ("Invalid SDP record")
    elif code == _widcomm.SDP_INVALID_PARAMETERS:
        raise BluetoothError ("SDP: invalid parameters")
    raise RuntimeError ("unknown SDP status code %s" % code)

class BluetoothSocket:
    def __init__ (self, proto = RFCOMM, _sockdata = None):
        if not proto in [ RFCOMM, L2CAP ]:
            raise ValueError ("invalid protocol")

        self.proto = proto

        if proto == RFCOMM:
            self.bind            = self.rfcomm_bind
            self.listen          = self.rfcomm_listen
            self.accept          = self.rfcomm_accept
            self.connect         = self.rfcomm_connect
            self.send            = self.rfcomm_send
            self.recv            = self.rfcomm_recv
            self.close           = self.rfcomm_close
            self.getsockname     = self.rfcomm_getsockname
            self.setblocking     = self.rfcomm_setblocking
            self.settimeout      = self.rfcomm_settimeout
            self.gettimeout      = self.rfcomm_gettimeout
            self.dup             = self.rfcomm_dup
            self.makefile        = self.rfcomm_makefile
            self.fileno          = self.rfcomm_fileno
            self.__make_cobjects = self.__rfcomm_make_cobjects
            self._advertise_service = self.__rfcomm_advertise_service

            if _sockdata:
                self._wc, self._if, self.readsock = _sockdata
            else:
                self.__make_cobjects ()

            self.connected = self._wc.is_connected ()

        elif proto == L2CAP:
            dbg ("creating l2cap socket")
            self.bind            = self.l2cap_bind
            self.listen          = self.l2cap_listen
            self.accept          = self.l2cap_accept
            self.connect         = self.l2cap_connect
            self.send            = self.l2cap_send
            self.recv            = self.l2cap_recv
            self.close           = self.l2cap_close
            self.getsockname     = self.l2cap_getsockname
            self.setblocking     = self.l2cap_setblocking
            self.settimeout      = self.l2cap_settimeout
            self.gettimeout      = self.l2cap_gettimeout
            self.dup             = self.l2cap_dup
            self.makefile        = self.l2cap_makefile
            self.fileno          = self.l2cap_fileno
            self.__make_cobjects = self.__l2cap_make_cobjects
            self._advertise_service = self.__l2cap_advertise_service

            if _sockdata:
                self._wc, self._if, self.readsock = _sockdata
                self.connected = True
            else:
                self.__make_cobjects ()
                self.connected = False
        else:
            raise NotImplementedError ()

        self.nonblocking = False
        self.connecting = False
        self.listening = False
        self.bound = False
        self.received_data = []
        self.last_event_code = None
        self.port = 0
        self._sdpservice = None
    
    def _stop_advertising (self):
        if not self._sdpservice:
            raise BluetoothError ("not advertising any services")
        self._sdpservice = None

    def __rfcomm_make_cobjects (self):
        self._wc = _widcomm._WCRfCommPort ()
        self._if = _widcomm._WCRfCommIf ()
        self.readsock = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
        self.readsock.connect (("127.0.0.1", self._wc.get_sockport ()))
        self._wc.accept_client ()
        
    def rfcomm_read_msg (self):
        intsize = struct.calcsize ("=i")
        msg_type_data = self.readsock.recv (intsize)
        msg_type = struct.unpack ("=i", msg_type_data)[0]

        if msg_type == _widcomm.RFCOMM_DATA_RECEIVED:
            datalen_fmt = "=i"
            datalen_data = self.readsock.recv (struct.calcsize (datalen_fmt))
            datalen = struct.unpack (datalen_fmt, datalen_data)[0]

            self.received_data.append (self.readsock.recv (datalen))

        elif msg_type == _widcomm.RFCOMM_EVENT_RECEIVED:
            fmt = "=I"
            data = self.readsock.recv (struct.calcsize (fmt))
            code = struct.unpack (fmt, data)[0]
            dbg ("event %X received" % code)
            
            if code & _widcomm.PORT_EV_CONNECTED:
                self.connecting = False
                self.listening = False
                self.connected = True
            if code & _widcomm.PORT_EV_CONNECT_ERR:
                self.connecting = False
                self.listening = False
                self.connected = False
                raise BluetoothError ("Connection failed")
            if code & _widcomm.PORT_EV_RXFLAG:
                dbg ("Rx flag")
            if code & _widcomm.PORT_EV_TXEMPTY:
                dbg ("Tx queue empty")
            if code & _widcomm.PORT_EV_CTS:
                dbg ("CTS changed state")
            if code & _widcomm.PORT_EV_DSR:
                dbg ("DSR changed state")
            if code & _widcomm.PORT_EV_RLSD:
                dbg ("RLSD changed state")
            if code & _widcomm.PORT_EV_BREAK:
                dbg ("BREAK received")
            if code & _widcomm.PORT_EV_ERR:
                dbg ("Line status error")
            if code & _widcomm.PORT_EV_RING:
                dbg ("Ring")
            if code & _widcomm.PORT_EV_CTSS:
                dbg ("CTS state")
            if code & _widcomm.PORT_EV_DSRS:
                dbg ("DSR state")
            if code & _widcomm.PORT_EV_RLSDS:
                dbg ("RLSD state")
            if code & _widcomm.PORT_EV_OVERRUN:
                dbg ("Receive buffer overrun")
            if code & _widcomm.PORT_EV_TXCHAR:
                dbg ("Data transmitted")
            if code & _widcomm.PORT_EV_FC:
                dbg ("Flow control changed by remote")
            if code & _widcomm.PORT_EV_FCS:
                dbg ("Flow control status true = enabled")

            self.last_event_code = code

    def rfcomm_bind (self, addrport):
        addr, port = addrport

        if len (addr): 
            raise ValueError ("Widcomm stack can't bind to " \
            "user-specified adapter")

        result = self._if.assign_scn_value (RFCOMM_UUID, port)
        if not result:
            raise BluetoothError ("unable to bind to port")
        self.bound = True
        self.port = self._if.get_scn ()

    def rfcomm_listen (self, backlog):
        if self.connected: 
            raise BluetoothError ("already connected")
        if self.listening: 
            raise BluetoothError ("already listening/connecting")
        if backlog != 1:
            raise ValueError ("Widcomm stack requires backlog == 1")

        port = self._if.get_scn ()
        self._if.set_security_level ("", _widcomm.BTM_SEC_NONE, True)
        if not port:
            raise BluetoothError ("not bound to a port")
        result = self._wc.open_server (port, DEFAULT_MTU)
        if result != _widcomm.RFCOMM_SUCCESS:
            raise BluetoothError (_port_return_code_to_str (result))
        self.listening = True

    def rfcomm_accept (self):
        if self.connected:
            raise BluetoothError ("already connected")

        while self.listening and not self.connected:
            dbg ("waiting for connection")
            self.rfcomm_read_msg ()

        if self.connected:
            port = self._if.get_scn ()

            client_bdaddr = BD_ADDR_to_str (self._wc.is_connected ())
            # XXX widcomm API doesn't provide a way to determine the RFCOMM
            # channel number of the client
            client_port = 0

            # create a new socket object and give it ownership of the 
            # wrapped C++ objects, since those are the ones actually connected
            _sockdata = self._wc, self._if, self.readsock
            clientsock = BluetoothSocket (RFCOMM, _sockdata)

            # now create new C++ objects
            self.__rfcomm_make_cobjects ()
#            self.bind (("", port))
#            self.listen (1)

            return clientsock, (client_bdaddr, client_port)

    def rfcomm_connect (self, addrport):
        addr, port = addrport
        dbg ("connecting to %s port %d" % (addr, port))
        if not is_valid_address (addr):
            raise ValueError ("invalid address %s" % addr)

        self._if.assign_scn_value (RFCOMM_UUID, port)
        self._if.set_security_level ("", _widcomm.BTM_SEC_NONE, False)

        result = self._wc.open_client (port, str_to_BD_ADDR (addr), DEFAULT_MTU)
        if result != _widcomm.RFCOMM_SUCCESS:
            raise BluetoothError (_port_return_code_to_str (result))

        self.connecting = True
        while self.connecting:
            self.rfcomm_read_msg ()

        if not self._wc.is_connected ():
            raise BluetoothError ("connection failed")


    def rfcomm_send (self, data):
        dbg ("sending: [%s]" % data)
        status, written = self._wc.write (data)
        if status == _widcomm.RFCOMM_SUCCESS:
            dbg ("sent okay")
            return written
        else:
            raise BluetoothError (_port_return_code_to_str (status))

    def rfcomm_recv (self, numbytes):
        if self.nonblocking and not self.received_data:
            # XXX are we supposed to raise an exception, or just return None?
            return None

        while not self.received_data and self._wc.is_connected ():
            self.rfcomm_read_msg ()

        if self.received_data:
            data = self.received_data.pop (0)
            if len(data) > numbytes:
                self.received_data.insert (0, data[numbytes:])
                return data[:numbytes]
            else:
                return data

    def rfcomm_close (self):
        self._wc.close ()
        self._wc = None
        self.bound = False
        self.connecting = False
        self.listening = False
        self.connected = False
#        return bt.close (self._sockfd)

    def rfcomm_getsockname (self):
        if not self.bound:
            raise BluetoothError ("Socket not bound")
        addr = inquirer.get_local_device_address ()
        port = self._if.get_scn ()
        return addr, port

    def rfcomm_setblocking (self, blocking):
        self.nonblocking = not blocking
        self.readsock.setblocking (blocking)

    def rfcomm_settimeout (self, timeout):
        raise NotImplementedError
        pass
#        if timeout < 0: raise ValueError ("invalid timeout")
#
#        if timeout == 0:
#            self.setblocking (False)
#        else:
#            self.setblocking (True)
#            # XXX this doesn't look correct
#            timeout = 0 # winsock timeout still needs to be set 0
#
#        s = bt.settimeout (self._sockfd, timeout)
#        self._timeout = timeout

    def rfcomm_gettimeout (self):    
        raise NotImplementedError
#        if self._blocking and not self._timeout: return None
#        return bt.gettimeout (self._sockfd)

    def rfcomm_fileno (self):
        return self.readsock.fileno ()

    def rfcomm_dup (self):
        raise NotImplementedError

    def rfcomm_makefile (self):
        raise NotImplementedError

    def __rfcomm_advertise_service (self, name, service_id, 
            service_classes, profiles, provider, description, 
            protocols):
        if self._sdpservice is not None:
            raise BluetoothError ("Service already advertised")
        if not self.listening:
            raise BluetoothError ("Socket must be listening before advertised")
        if protocols:
            raise NotImplementedError ("extra protocols not yet supported in Widcomm stack")

        self._sdpservice = _widcomm._WCSdpService ()
        if service_classes:
            service_classes = [ to_full_uuid (s) for s in service_classes ]
            _sdp_checkraise (self._sdpservice.add_service_class_id_list ( \
                    service_classes))
        
#        self._if.set_security_level (name, _widcomm.BTM_SEC_NONE, True)
        _sdp_checkraise (self._sdpservice.add_rfcomm_protocol_descriptor ( \
            self.port))
        if profiles:
            for uuid, version in profiles:
                uuid = to_full_uuid (uuid)
                _sdp_checkraise (self._sdpservice.add_profile_descriptor_list (\
                        uuid, version))
        _sdp_checkraise (self._sdpservice.add_service_name (name))
        _sdp_checkraise (self._sdpservice.make_public_browseable ())

    def __l2cap_make_cobjects (self):
        dbg ("__l2cap_make_cobjects")
        self._wc = _widcomm._WCL2CapConn ()
        self._if = _widcomm._WCL2CapIf ()
        self.readsock = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
        self.readsock.connect (("127.0.0.1", self._wc.get_sockport ()))
        self._wc.accept_client ()
        
    def l2cap_read_msg (self):
        intsize = struct.calcsize ("=i")
        msg_type_data = self.readsock.recv (intsize)
        msg_type = struct.unpack ("=i", msg_type_data)[0]

        if msg_type == _widcomm.L2CAP_DATA_RECEIVED:
            datalen_fmt = "=i"
            datalen_data = self.readsock.recv (struct.calcsize (datalen_fmt))
            datalen = struct.unpack (datalen_fmt, datalen_data)[0]
            self.received_data.append (self.readsock.recv (datalen))

        elif msg_type == _widcomm.L2CAP_INCOMING_CONNECTION:
            result = self._wc.accept ()
            if not result: raise BluetoothError ("accept() failed")

        elif msg_type == _widcomm.L2CAP_REMOTE_DISCONNECTED:
            dbg ("L2CAP_REMOTE_DISCONNECTED")
            self.connecting = False
            self.listening = False
            self.connected = False

        elif msg_type == _widcomm.L2CAP_CONNECTED:
            self.connecting = False
            self.listening = False
            self.connected = True

#        elif msg_type == _widcomm.PORT_EV_CONNECT_ERR:
#            self.connecting = False
#            self.listening = False
#            raise BluetoothError ("Connection failed")

    def l2cap_bind (self, addrport):
        dbg ("l2cap_bind %s" % str(addrport))
        addr, port = addrport

        if len (addr): 
            raise ValueError ("Widcomm stack can't bind to " \
            "user-specified adapter")

        result = self._if.assign_psm_value (L2CAP_UUID, port)
        if not result:
            raise BluetoothError ("unable to bind to port")
        self.bound = True
        self.port = self._if.get_psm ()
        result = self._if.register ()
        if not result:
            raise BluetoothError ("register() failed")

    def l2cap_listen (self, backlog):
        dbg ("l2cap_listen %s" % backlog)
        if self.connected:
            raise BluetoothError ("already connected")
        if self.listening:
            raise BluetoothError ("already listening/connecting")
        if backlog != 1:
            raise ValueError ("Widcomm stack requires backlog == 1")

        port = self._if.get_psm ()
        self._if.set_security_level ("", _widcomm.BTM_SEC_NONE, True)
        if not port:
            raise BluetoothError ("not bound to a port")
        result = self._wc.listen (self._if)
        if not result:
            raise BluetoothError ("listen() failed.  don't know why")
        self.listening = True

    def l2cap_accept (self):
        dbg ("l2cap_accept")
        if self.connected:
            raise BluetoothError ("already connected")

        while self.listening and not self.connected:
            dbg ("waiting for connection")
            self.l2cap_read_msg ()

        if self.connected:
            port = self._if.get_psm ()

            client_bdaddr = BD_ADDR_to_str (self._wc.remote_bd_addr ())
            # XXX widcomm API doesn't provide a way to determine the L2CAP
            # PSM of the client
            client_port = 0

            # create a new socket object and give it ownership of the 
            # wrapped C++ objects, since those are the ones actually connected
            _sockdata = self._wc, self._if, self.readsock
            clientsock = BluetoothSocket (L2CAP, _sockdata)

            # now create new C++ objects
            self.__l2cap_make_cobjects ()
#            self.bind (("", port))
#            self.listen (1)

            return clientsock, (client_bdaddr, client_port)

    def l2cap_connect (self, addrport):
        addr, port = addrport
        dbg ("connecting to %s port %d" % (addr, port))
        if not is_valid_address (addr):
            raise ValueError ("invalid address %s" % addr)

        if not self._if.assign_psm_value (L2CAP_UUID, port):
            raise BluetoothError ("Failed to assign PSM %d" % port)
        if not self._if.set_security_level ("", _widcomm.BTM_SEC_NONE, False):
            raise BluetoothError ("Failed to set security level")
        if not self._if.register ():
            raise BluetoothError ("Failed to register PSM")

        self.connecting = True

        if not self._wc.connect (self._if, str_to_BD_ADDR (addr)):
            raise BluetoothError ("Connect failed")

        while self.connecting:
            self.l2cap_read_msg ()

        if not self.connected:
            raise BluetoothError ("connection failed")


    def l2cap_send (self, data):
        dbg ("sending: [%s]" % data)
        status, written = self._wc.write (data)
        if status:
            dbg ("sent okay")
            return written
        else:
            raise BluetoothError (_port_return_code_to_str (status))

    def l2cap_recv (self, numbytes):
        if self.nonblocking and not self.received_data:
            # XXX are we supposed to raise an exception, or just return None?
            return None

        while not self.received_data and self.connected:
            self.l2cap_read_msg ()

        if self.received_data:
            data = self.received_data.pop (0)
            if len(data) > numbytes:
                self.received_data.insert (0, data[numbytes:])
                return data[:numbytes]
            else:
                return data

    def l2cap_close (self):
        self._wc.disconnect ()
        self._if.deregister ()
        self._wc = None
        self.bound = False
        self.connecting = False
        self.listening = False
        self.connected = False
#        return bt.close (self._sockfd)

    def l2cap_getsockname (self):
        if not self.bound:
            raise BluetoothError ("Socket not bound")
        addr = inquirer.get_local_device_address ()
        port = self._if.get_psm ()
        return addr, port

    def l2cap_setblocking (self, blocking):
        self.nonblocking = not blocking
        self.readsock.setblocking (blocking)

    def l2cap_settimeout (self, timeout):
        raise NotImplementedError
#        if timeout < 0: raise ValueError ("invalid timeout")
#
#        if timeout == 0:
#            self.setblocking (False)
#        else:
#            self.setblocking (True)
#            # XXX this doesn't look correct
#            timeout = 0 # winsock timeout still needs to be set 0
#
#        s = bt.settimeout (self._sockfd, timeout)
#        self._timeout = timeout

    def l2cap_gettimeout (self):    
        raise NotImplementedError
#        if self._blocking and not self._timeout: return None
#        return bt.gettimeout (self._sockfd)

    def l2cap_fileno (self):
        return self.readsock.fileno ()

    def l2cap_dup (self):
        raise NotImplementedError
#        return BluetoothSocket (self._proto, sockfd=bt.dup (self._sockfd))

    def l2cap_makefile (self):
        raise NotImplementedError

    def __l2cap_advertise_service (self, name, service_id, 
            service_classes, profiles, provider, description, 
            protocols):
        if self._sdpservice is not None:
            raise BluetoothError ("Service already advertised")
        if not self.listening:
            raise BluetoothError ("Socket must be listening before advertised")
        if protocols:
            raise NotImplementedError ("extra protocols not yet supported in Widcomm stack")

        self._sdpservice = _widcomm._WCSdpService ()
        if service_classes:
            service_classes = [ to_full_uuid (s) for s in service_classes ]
            _sdp_checkraise (self._sdpservice.add_service_class_id_list ( \
                service_classes))
        _sdp_checkraise (self._sdpservice.add_l2cap_protocol_descriptor ( \
                self.port))
        if profiles:
            for uuid, version in profiles:
                uuid = to_full_uuid (uuid)
                _sdp_checkraise (self._sdpservice.add_profile_descriptor_list (\
                        uuid, version))
        _sdp_checkraise (self._sdpservice.add_service_name (name))
        _sdp_checkraise (self._sdpservice.make_public_browseable ())


class DeviceDiscoverer:
    def __init__ (self):
        raise NotImplementedError