summaryrefslogtreecommitdiffstats
path: root/hcid/dbus-rfcomm.c
blob: c9f862e066acf0e30dece2743ebbc7661b4f0ef6 (plain)
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
/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2004-2006  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/socket.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>

#include <dbus/dbus.h>

#include "hcid.h"
#include "list.h"
#include "glib-ectomy.h"
#include "dbus.h"

/* Waiting for udev to create the device node */
#define MAX_OPEN_TRIES 6
#define OPEN_WAIT (1000 * 300)

static int rfcomm_ctl = -1;

struct rfcomm_node {
	int16_t		id;		/* Device id */
	char		name[16];       /* Node filename */

	/* The following members are only valid for connected nodes */
	GIOChannel	*io;		/* IO Channel for the connection */
	guint		io_id;		/* ID for IO channel */
	char		*owner;		/* D-Bus name that created the node */
};

struct pending_connect {
	DBusConnection		*conn;
	DBusMessage		*msg;
	GIOChannel		*io;
	char 			*svc;
	int			canceled;
	struct sockaddr_rc	laddr;
	struct sockaddr_rc	raddr;
};

static struct slist *pending_connects = NULL;
static struct slist *connected_nodes = NULL;
static struct slist *bound_nodes = NULL;

static char *rfcomm_node_name_from_id(int16_t id, char *dev, size_t len)
{
    snprintf(dev, len, "/dev/rfcomm%d", id);
    return dev;
}

static void rfcomm_node_free(struct rfcomm_node *node)
{
	if (node->io) {
		g_io_channel_close(node->io);
		g_io_remove_watch(node->io_id);
	}
	if (node->owner)
		free(node->owner);
	free(node);
}

static struct rfcomm_node *find_node_by_name(struct slist *nodes, const char *name)
{
	struct slist *l;

	for (l = nodes; l != NULL; l = l->next) {
		struct rfcomm_node *node = l->data;
		if (!strcmp(node->name, name))
			return node;
	}

	return NULL;
}

static struct pending_connect *find_pending_connect(const char *bda, uint8_t ch)
{
	struct slist *l;
	bdaddr_t dba;

	str2ba(bda, &dba);

	for (l = pending_connects; l != NULL; l = l->next) {
		struct pending_connect *pending = l->data;
		if (!bacmp(&dba, &pending->raddr.rc_bdaddr)
				&& pending->raddr.rc_channel == ch)
			return pending;
	}

	return NULL;
}

static void pending_connect_free(struct pending_connect *c)
{
	if (c->svc)
		free(c->svc);
	if (c->io)
		g_io_channel_close(c->io);
	if (c->msg)
		dbus_message_unref(c->msg);
	if (c->conn)
		dbus_connection_unref(c->conn);
	free(c);
}

static int set_nonblocking(int fd, int *err)
{
	long arg;

	arg = fcntl(fd, F_GETFL);
	if (arg < 0) {
		if (err)
			*err = errno;
		error("fcntl(F_GETFL): %s (%d)", strerror(errno), errno);
		return -1;
	}

	/* Return if already nonblocking */
	if (arg & O_NONBLOCK)
		return 0;

	arg |= O_NONBLOCK;
	if (fcntl(fd, F_SETFL, arg) < 0) {
		if (err)
			*err = errno;
		error("fcntl(F_SETFL, O_NONBLOCK): %s (%d)",
				strerror(errno), errno);
		return -1;
	}

	return 0;
}

static int rfcomm_release(struct rfcomm_node *node, int *err)
{
	struct rfcomm_dev_req req;

	debug("rfcomm_release(%s)", node->name);

	if (node->io) {
		g_io_channel_close(node->io);
		g_io_remove_watch(node->io_id);
		node->io = NULL;
	}

	memset(&req, 0, sizeof(req));
	req.dev_id = node->id;

	if (ioctl(rfcomm_ctl, RFCOMMRELEASEDEV, &req) < 0) {
		if (err)
			*err = errno;
		error("Can't release device %d: %s (%d)", node->id,
				strerror(errno), errno);
		return -1;
	}

	return 0;
}

static gboolean rfcomm_disconnect_cb(GIOChannel *io, GIOCondition cond,
					struct rfcomm_node *node)
{
	debug("RFCOMM node %s was disconnected", node->name);
	connected_nodes = slist_remove(connected_nodes, node);
	rfcomm_node_free(node);
	return FALSE;
}

static gboolean rfcomm_connect_cb(GIOChannel *chan, GIOCondition cond,
					struct pending_connect *c)
{
	int sk, ret, err, fd = -1, i;
	socklen_t len;
	char *ptr;
	struct rfcomm_dev_req req;
	struct rfcomm_node *node = NULL;
	DBusMessage *reply = NULL;

	if (c->canceled) {
		error_connect_canceled(c->conn, c->msg);
		goto failed;
	}

	sk = g_io_channel_unix_get_fd(chan);

	len = sizeof(ret);
	if (getsockopt(sk, SOL_SOCKET, SO_ERROR, &ret, &len) < 0) {
		err = errno;
		error("getsockopt(SO_ERROR): %s (%d)", strerror(err), err);
		error_failed(c->conn, c->msg, err);
		goto failed;
	}

	if (ret != 0) {
		error("connect(): %s (%d)", strerror(ret), ret);
		error_connection_attempt_failed(c->conn, c->msg, ret);
		goto failed;
	}

	debug("rfcomm_connect_cb: connected");

	len = sizeof(c->laddr);
	if (getsockname(sk, (struct sockaddr *) &c->laddr, &len) < 0) {
		err = errno;
		error_failed(c->conn, c->msg, err);
		error("getsockname: %s (%d)", strerror(err), err);
		goto failed;
	}

	node = malloc(sizeof(struct rfcomm_node));
	if (!node) {
		error_failed(c->conn, c->msg, ENOMEM);
		goto failed;
	}

	/* Create the rfcomm device node */
	memset(&req, 0, sizeof(req));

	req.dev_id = -1;
	req.flags = (1 << RFCOMM_REUSE_DLC) | (1 << RFCOMM_RELEASE_ONHUP);

	bacpy(&req.src, &c->laddr.rc_bdaddr);
	bacpy(&req.dst, &c->raddr.rc_bdaddr);
	req.channel = c->raddr.rc_channel;

	node->id = ioctl(sk, RFCOMMCREATEDEV, &req);
	if (node->id < 0) {
		err = errno;
		error("ioctl(RFCOMMCREATEDEV): %s (%d)", strerror(errno), err);
		error_failed(c->conn, c->msg, err);
		goto failed;
	}

	rfcomm_node_name_from_id(node->id, node->name, sizeof(node->name));

	/* FIXME: instead of looping here we should create a timer and
	 * return to the mainloop */
	for (i = 0; i < MAX_OPEN_TRIES; i++) {
		fd = open(node->name, O_RDONLY | O_NOCTTY);
		if (fd >= 0)
			break;
		usleep(OPEN_WAIT);
	}

	if (fd < 0) {
		err = errno;
		error("Could not open %s: %s (%d)", node->name,
				strerror(err), err);
		rfcomm_release(node, NULL);
		rfcomm_node_free(node);

		error_connection_attempt_failed(c->conn, c->msg, err);
		goto failed;
	}

	reply = dbus_message_new_method_return(c->msg);
	if (!reply) {
		error_failed(c->conn, c->msg, ENOMEM);
		goto failed;
	}

	ptr = node->name;
	if (!dbus_message_append_args(reply,
				DBUS_TYPE_STRING, &ptr,
				DBUS_TYPE_INVALID)) {
		error_failed(c->conn, c->msg, ENOMEM);
		goto failed;
	}

	node->owner = strdup(dbus_message_get_sender(c->msg));
	if (!node->owner) {
		error_failed(c->conn, c->msg, ENOMEM);
		goto failed;
	}

        node->io = g_io_channel_unix_new(fd);
	node->io_id = g_io_add_watch(node->io, G_IO_ERR | G_IO_HUP,
					(GIOFunc)rfcomm_disconnect_cb, node);

	send_reply_and_unref(c->conn, reply);

	connected_nodes = slist_append(connected_nodes, node);

	goto done;

failed:
	if (fd >= 0)
		close(fd);
	if (node) {
		rfcomm_release(node, NULL);
		rfcomm_node_free(node);
	}
	if (reply)
		dbus_message_unref(reply);
done:
	pending_connects = slist_remove(pending_connects, c);
	pending_connect_free(c);

	return FALSE;
}

static int rfcomm_connect(DBusConnection *conn, DBusMessage *msg, bdaddr_t *src,
			const char *bda, const char *svc, uint8_t ch, int *err)
{
	int sk = -1;
	struct pending_connect *c = NULL;

	c = malloc(sizeof(struct pending_connect));
	if (!c) {
		if (err)
			*err = ENOMEM;
		goto failed;
	}

	memset(c, 0, sizeof(struct pending_connect));

	if (svc) {
		c->svc = strdup(svc);
		if (!c->svc) {
			if (err)
				*err = ENOMEM;
			goto failed;
		}
	}

	c->laddr.rc_family = AF_BLUETOOTH;
	bacpy(&c->laddr.rc_bdaddr, src);
	c->laddr.rc_channel = 0;

	c->raddr.rc_family = AF_BLUETOOTH;
	str2ba(bda, &c->raddr.rc_bdaddr);
	c->raddr.rc_channel = ch;

	sk = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
	if (sk < 0) {
		if (err)
			*err = errno;
		goto failed;
	}

	if (bind(sk, (struct sockaddr *)&c->laddr, sizeof(c->laddr)) < 0) {
		if (err)
			*err = errno;
		goto failed;
	}

	if (set_nonblocking(sk, err) < 0)
		goto failed;

	/* So we can reply to the message later */
	c->msg = dbus_message_ref(msg);
	c->conn = dbus_connection_ref(conn);

	c->io = g_io_channel_unix_new(sk);

	if (connect(sk, (struct sockaddr *)&c->raddr, sizeof(c->raddr)) < 0) {
		/* BlueZ returns EAGAIN eventhough it should return EINPROGRESS */
		if (!(errno == EAGAIN || errno == EINPROGRESS)) {
			if (err)
				*err = errno;
			error("connect() failed: %s (%d)", strerror(errno), errno);
			goto failed;
		}

		debug("Connect in progress");
		g_io_add_watch(c->io, G_IO_OUT, (GIOFunc)rfcomm_connect_cb, c);
		pending_connects = slist_append(pending_connects, c);
	} else {
		debug("Connect succeeded with first try");
		(void) rfcomm_connect_cb(c->io, G_IO_OUT, c);
	}

	return 0;

failed:
	if (c)
		pending_connect_free(c);
	if (sk >= 0)
		close(sk);
	return -1;
}

static struct rfcomm_node *rfcomm_bind(bdaddr_t *src, const char *bda, uint8_t ch, int *err)
{
	struct rfcomm_dev_req req;
	struct rfcomm_node *node;

	debug("rfcomm_bind(%s, %d)", bda, ch);

	memset(&req, 0, sizeof(req));
	req.dev_id = -1;
	req.flags = 0;
	bacpy(&req.src, src);

	str2ba(bda, &req.dst);
	req.channel = ch;

	node = malloc(sizeof(struct rfcomm_node));
	if (!node) {
		if (err)
			*err = ENOMEM;
		return NULL;
	}

	memset(node, 0, sizeof(struct rfcomm_node));

	node->id = ioctl(rfcomm_ctl, RFCOMMCREATEDEV, &req);
	if (node->id < 0) {
		if (err)
			*err = errno;
		error("RFCOMMCREATEDEV failed: %s (%d)", strerror(errno), errno);
		rfcomm_node_free(node);
		return NULL;
	}

	rfcomm_node_name_from_id(node->id, node->name, sizeof(node->name));
	bound_nodes = slist_append(bound_nodes, node);

	return node;
}

static DBusHandlerResult rfcomm_connect_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	error("RFCOMM.Connect not implemented");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}

static DBusHandlerResult rfcomm_cancel_connect_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	error("RFCOMM.CancelConnect not implemented");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}

static DBusHandlerResult rfcomm_connect_by_ch_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	bdaddr_t bdaddr;
	const char *dst;
	uint8_t ch;
	int err;
	struct hci_dbus_data *dbus_data = data;

	hci_devba(dbus_data->dev_id, &bdaddr);

	if (!dbus_message_get_args(msg, NULL,
				DBUS_TYPE_STRING, &dst,
				DBUS_TYPE_BYTE, &ch,
				DBUS_TYPE_INVALID))
		return error_invalid_arguments(conn, msg);

	if (find_pending_connect(dst, ch))
		return error_connect_in_progress(conn, msg);

	if (rfcomm_connect(conn, msg, &bdaddr, dst, NULL, ch, &err) < 0)
		return error_failed(conn, msg, err);

	return DBUS_HANDLER_RESULT_HANDLED;
}

static DBusHandlerResult rfcomm_cancel_connect_by_ch_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	const char *dst;
	uint8_t ch;
	DBusMessage *reply;
	struct pending_connect *pending;

	if (!dbus_message_get_args(msg, NULL,
				DBUS_TYPE_STRING, &dst,
				DBUS_TYPE_BYTE, &ch,
				DBUS_TYPE_INVALID))
		return error_invalid_arguments(conn, msg);

	pending = find_pending_connect(dst, ch);
	if (!pending)
		return error_connect_not_in_progress(conn, msg);

	reply = dbus_message_new_method_return(msg);
	if (!reply)
		return DBUS_HANDLER_RESULT_NEED_MEMORY;

	pending->canceled = 1;

	return send_reply_and_unref(conn, reply);
}

static DBusHandlerResult rfcomm_disconnect_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	DBusMessage *reply;
	const char *name;
	struct rfcomm_node *node;
	int err;

	if (!dbus_message_get_args(msg, NULL,
				DBUS_TYPE_STRING, &name,
				DBUS_TYPE_INVALID))
		return error_invalid_arguments(conn, msg);

	node = find_node_by_name(connected_nodes, name);
	if (!node)
		return error_not_connected(conn, msg);

	reply = dbus_message_new_method_return(msg);
	if (!reply)
		return DBUS_HANDLER_RESULT_NEED_MEMORY;

	if (rfcomm_release(node, &err) < 0) {
		dbus_message_unref(reply);
		return error_failed(conn, msg, err);
	}

	connected_nodes = slist_remove(connected_nodes, node);
	rfcomm_node_free(node);

	return send_reply_and_unref(conn, reply);
}

static DBusHandlerResult rfcomm_bind_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	error("RFCOMM.Bind not implemented");
	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}

static DBusHandlerResult rfcomm_bind_by_ch_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	bdaddr_t bdaddr;
	DBusMessage *reply = NULL;
	uint8_t ch;
	int err;
	const char *dst, *name;
	struct hci_dbus_data *dbus_data = data;
	struct rfcomm_node *node = NULL;

	hci_devba(dbus_data->dev_id, &bdaddr);

	if (!dbus_message_get_args(msg, NULL,
				DBUS_TYPE_STRING, &dst,
				DBUS_TYPE_BYTE, &ch,
				DBUS_TYPE_INVALID))
		return error_invalid_arguments(conn, msg);


	node = rfcomm_bind(&bdaddr, dst, ch, &err);
	if (!node)
		return error_failed(conn, msg, err);

	reply = dbus_message_new_method_return(msg);
	if (!reply)
		goto need_memory;

	name = node->name;
	if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &name,
					DBUS_TYPE_INVALID))
		goto need_memory;

	return send_reply_and_unref(conn, reply);

need_memory:
	if (reply)
		dbus_message_unref(reply);
	if (node) {
		bound_nodes = slist_remove(bound_nodes, node);
		rfcomm_release(node, NULL);
		rfcomm_node_free(node);
	}
	return DBUS_HANDLER_RESULT_NEED_MEMORY;
}

static DBusHandlerResult rfcomm_release_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	DBusMessage *reply;
	const char *name;
	struct rfcomm_node *node;
	int err;

	if (!dbus_message_get_args(msg, NULL,
				DBUS_TYPE_STRING, &name,
				DBUS_TYPE_INVALID))
		return error_invalid_arguments(conn, msg);

	node = find_node_by_name(bound_nodes, name);
	if (!node)
		return error_binding_does_not_exist(conn, msg);

	reply = dbus_message_new_method_return(msg);
	if (!reply)
		return DBUS_HANDLER_RESULT_NEED_MEMORY;

	if (rfcomm_release(node, &err) < 0) {
		dbus_message_unref(reply);
		return error_failed(conn, msg, err);
	}

	bound_nodes = slist_remove(bound_nodes, node);
	rfcomm_node_free(node);

	return send_reply_and_unref(conn, reply);
}

static DBusHandlerResult rfcomm_list_bindings_req(DBusConnection *conn,
						DBusMessage *msg, void *data)
{
	bdaddr_t bdaddr;
	DBusMessage *reply;
	DBusMessageIter iter, sub;
	struct hci_dbus_data *dbus_data = data;
	struct slist *l;

	hci_devba(dbus_data->dev_id, &bdaddr);

	reply = dbus_message_new_method_return(msg);
	if (!reply)
		return DBUS_HANDLER_RESULT_NEED_MEMORY;

	dbus_message_iter_init_append(reply, &iter);

	if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
		dbus_message_unref(reply);
		return DBUS_HANDLER_RESULT_NEED_MEMORY;
	}

	for (l = bound_nodes; l != NULL; l = l->next) {
		struct rfcomm_node *node = l->data;
		struct rfcomm_dev_info di = { id: node->id };
		char *name = node->name;

		if (ioctl(rfcomm_ctl, RFCOMMGETDEVINFO, &di) < 0) {
			error("RFCOMMGETDEVINFO(%d): %s (%d)",
					node->id, strerror(errno), errno);
			continue;
		}

		/* Ignore nodes not specific to this adapter */
		if (bacmp(&di.src, &bdaddr))
			continue;

		dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &name);
	}

	if (!dbus_message_iter_close_container(&iter, &sub)) {
		dbus_message_unref(reply);
		return DBUS_HANDLER_RESULT_NEED_MEMORY;
	}

	return send_reply_and_unref(conn, reply);
}

static struct service_data rfcomm_services[] = {
	{ "Connect",			rfcomm_connect_req,			},
	{ "CancelConnect",		rfcomm_cancel_connect_req,		},
	{ "ConnectByChannel",		rfcomm_connect_by_ch_req,		},
	{ "CancelConnectByChannel",	rfcomm_cancel_connect_by_ch_req,	},
	{ "Disconnect",			rfcomm_disconnect_req,			},
	{ "Bind",			rfcomm_bind_req,			},
	{ "BindByChannel",		rfcomm_bind_by_ch_req,			},
	{ "Release",			rfcomm_release_req,			},
	{ "ListBindings",		rfcomm_list_bindings_req,		},
	{ NULL,				NULL,					}
};

DBusHandlerResult handle_rfcomm_method(DBusConnection *conn, DBusMessage *msg,
					void *data)
{
	service_handler_func_t handler;

	if (!data) {
		error("RFCOMM method called with NULL data pointer!");
		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
	}

	/* Initialize the RFCOMM control socket if has not yet been done */
	if (rfcomm_ctl < 0) {
		rfcomm_ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_RFCOMM);
		if (rfcomm_ctl < 0)
			return error_failed(conn, msg, errno);
	}

	handler = find_service_handler(rfcomm_services, msg);

	if (handler)
		return handler(conn, msg, data);

	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}