summaryrefslogtreecommitdiffstats
path: root/hcid/security.c
blob: 6f0aa10f7406eba4ba32b9ef239ee30ac5085b80 (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
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
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2000-2001  Qualcomm Incorporated
 *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>
 *  Copyright (C) 2002-2006  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 <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/socket.h>

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

#include "glib-ectomy.h"

#include "hcid.h"
#include "lib.h"
#include "textfile.h"
#include "list.h"

struct g_io_info {
	GIOChannel	*channel;
	int		watch_id;
	int		pin_length;
};

static struct g_io_info io_data[HCI_MAX_DEV];

static int pairing = HCID_PAIRING_MULTI;

static struct slist *hci_req_queue = NULL;

struct hci_req_data *hci_req_data_new(int dev_id, const bdaddr_t *dba, uint16_t ogf, uint16_t ocf, int event, const void *cparam, int clen)
{
	struct hci_req_data *data;

	data = malloc(sizeof(*data));
	if (!data)
		return NULL;

	memset(data, 0, sizeof(*data));

	data->cparam = malloc(clen);
	if (!data->cparam) {
		free(data);
		return NULL;
	}
	
	memcpy(data->cparam, cparam, clen);

	bacpy(&data->dba, dba);

	data->dev_id = dev_id;
	data->status = REQ_PENDING;
	data->ogf = ogf;
	data->ocf = ocf;
	data->event = event;
	data->clen = clen;

	return data;
}

void hci_req_queue_append(struct hci_req_data *data)
{
	hci_req_queue = slist_append(hci_req_queue, data);
}

void hci_req_queue_remove(int dev_id, bdaddr_t *dba)
{
	struct slist *cur, *next;
	struct hci_req_data *req;

	for (cur = hci_req_queue; cur != NULL; cur = next) {
		req = cur->data;
		next = cur->next;
		if ((req->dev_id != dev_id) || (bacmp(&req->dba, dba)))
			continue;

		hci_req_queue = slist_remove(hci_req_queue, req);
		free(req->cparam);
		free(req);
	}
}

static int hci_req_find_by_devid(const void *data, const void *user_data)
{
	const struct hci_req_data *req = data;
	const int *dev_id = user_data;

	return (*dev_id - req->dev_id);
}

static void check_pending_hci_req(int dev_id, int event)
{
	struct hci_req_data *data;
	struct slist *l;
	int dd, ret_val;

	if (!hci_req_queue)
		return;

	/* find the first element(pending)*/
	l = slist_find(hci_req_queue, &dev_id, hci_req_find_by_devid);

	if (!l)
		return;

	data = l->data;

	/* skip if there is pending confirmation */
	if (data->status == REQ_SENT) {
		if (data->event != event)
			return;

		/* remove the confirmed cmd */
		hci_req_queue = slist_remove(hci_req_queue, data);
		free(data->cparam);
		free(data);
	}

	/* send the next pending cmd */
	dd = hci_open_dev(dev_id);
	do {
		l = slist_find(hci_req_queue, &dev_id, hci_req_find_by_devid);

		if (!l)
			goto failed;

		data = l->data;
		data->status = REQ_SENT;
		
		ret_val = hci_send_cmd(dd, data->ogf, data->ocf, data->clen, data->cparam);
		if (ret_val < 0) {
			hci_req_queue = slist_remove(hci_req_queue, data);
			free(data->cparam);
			free(data);
		}

	} while(ret_val < 0);

failed:
	hci_close_dev(dd);

	return;
}

static inline int get_bdaddr(int dev, bdaddr_t *sba, uint16_t handle, bdaddr_t *dba)
{
	struct hci_conn_list_req *cl;
	struct hci_conn_info *ci;
	char addr[18];
	int i;

	cl = malloc(10 * sizeof(*ci) + sizeof(*cl));
	if (!cl)
		return -ENOMEM;

	ba2str(sba, addr);
	cl->dev_id = hci_devid(addr);
	cl->conn_num = 10;
	ci = cl->conn_info;

	if (ioctl(dev, HCIGETCONNLIST, (void *) cl) < 0) {
		free(cl);
		return -EIO;
	}

	for (i = 0; i < cl->conn_num; i++, ci++)
		if (ci->handle == handle) {
			bacpy(dba, &ci->bdaddr);
			free(cl);
			return 0;
		}

	free(cl);

	return -ENOENT;
}

static inline void update_lastseen(bdaddr_t *sba, bdaddr_t *dba)
{
	time_t t;
	struct tm *tm;

	t = time(NULL);
	tm = gmtime(&t);

	write_lastseen_info(sba, dba, tm);
}

static inline void update_lastused(bdaddr_t *sba, bdaddr_t *dba)
{
	time_t t;
	struct tm *tm;

	t = time(NULL);
	tm = gmtime(&t);

	write_lastused_info(sba, dba, tm);
}

/* Link Key handling */

static void link_key_request(int dev, bdaddr_t *sba, bdaddr_t *dba)
{
	unsigned char key[16];
	char sa[18], da[18];
	int err;

	ba2str(sba, sa); ba2str(dba, da);
	info("link_key_request (sba=%s, dba=%s)", sa, da);

	err = read_link_key(sba, dba, key);
	if (err < 0) {
		/* Link key not found */
		hci_send_cmd(dev, OGF_LINK_CTL, OCF_LINK_KEY_NEG_REPLY, 6, dba);
	} else {
		/* Link key found */
		link_key_reply_cp lr;
		memcpy(lr.link_key, key, 16);
		bacpy(&lr.bdaddr, dba);
		hci_send_cmd(dev, OGF_LINK_CTL, OCF_LINK_KEY_REPLY,
						LINK_KEY_REPLY_CP_SIZE, &lr);
	}
}

static void link_key_notify(int dev, bdaddr_t *sba, void *ptr)
{
	evt_link_key_notify *evt = ptr;
	bdaddr_t *dba = &evt->bdaddr;
	char sa[18], da[18];
	int dev_id;

	ba2str(sba, sa); ba2str(dba, da);
	info("link_key_notify (sba=%s, dba=%s)", sa, da);

	dev_id = hci_devid(sa);

	write_link_key(sba, dba, evt->link_key, evt->key_type,
						io_data[dev_id].pin_length);

	hcid_dbus_bonding_process_complete(sba, dba, 0);

	io_data[dev_id].pin_length = -1;
}

static void return_link_keys(int dev, bdaddr_t *sba, void *ptr)
{
	evt_return_link_keys *evt = ptr;
	uint8_t num = evt->num_keys;
	unsigned char key[16];
	char sa[18], da[18];
	bdaddr_t dba;
	int i;

	ba2str(sba, sa);
	ptr++;

	for (i = 0; i < num; i++) {
		bacpy(&dba, ptr); ba2str(&dba, da);
		memcpy(key, ptr + 6, 16);

		info("return_link_keys (sba=%s, dba=%s)", sa, da);

		ptr += 22;
	}
}

/* PIN code handling */

void set_pin_length(bdaddr_t *sba, int length)
{
	char addr[18];
	int dev_id;

	ba2str(sba, addr);
	dev_id = hci_devid(addr);

	io_data[dev_id].pin_length = length;
}

static void request_pin(int dev, bdaddr_t *sba, struct hci_conn_info *ci)
{
#ifdef ENABLE_DBUS
	hcid_dbus_request_pin(dev, sba, ci);
#else
	pin_code_reply_cp pr;
	char *pin = "BlueZ";
	int len;

	len  = strlen(pin);

	set_pin_length(sba, len);

	memset(&pr, 0, sizeof(pr));
	bacpy(&pr.bdaddr, &ci->bdaddr);
	memcpy(pr.pin_code, pin, len);
	pr.pin_len = len;

	hci_send_cmd(dev, OGF_LINK_CTL, OCF_PIN_CODE_REPLY,
					PIN_CODE_REPLY_CP_SIZE, &pr);
#endif
}

static void pin_code_request(int dev, bdaddr_t *sba, bdaddr_t *dba)
{
	pin_code_reply_cp pr;
	struct hci_conn_info_req *cr;
	struct hci_conn_info *ci;
	unsigned char key[16];
	char sa[18], da[18], pin[17];
	int err, pinlen;

	memset(&pr, 0, sizeof(pr));
	bacpy(&pr.bdaddr, dba);

	ba2str(sba, sa); ba2str(dba, da);
	info("pin_code_request (sba=%s, dba=%s)", sa, da);

	cr = malloc(sizeof(*cr) + sizeof(*ci));
	if (!cr)
		return;

	bacpy(&cr->bdaddr, dba);
	cr->type = ACL_LINK;
	if (ioctl(dev, HCIGETCONNINFO, (unsigned long) cr) < 0) {
		error("Can't get conn info: %s (%d)", strerror(errno), errno);
		goto reject;
	}
	ci = cr->conn_info;

	memset(pin, 0, sizeof(pin));
	pinlen = read_pin_code(sba, dba, pin);

	if (pairing == HCID_PAIRING_ONCE) {
		err = read_link_key(sba, dba, key);
		if (!err) {
			ba2str(dba, da);
			error("PIN code request for already paired device %s", da);
			goto reject;
		}
	} else if (pairing == HCID_PAIRING_NONE)
		goto reject;

	if (hcid.security == HCID_SEC_AUTO) {
		if (!ci->out) {
			/* Incomming connection */
			set_pin_length(sba, hcid.pin_len);
			memcpy(pr.pin_code, hcid.pin_code, hcid.pin_len);
			pr.pin_len = hcid.pin_len;
			hci_send_cmd(dev, OGF_LINK_CTL, OCF_PIN_CODE_REPLY,
				PIN_CODE_REPLY_CP_SIZE, &pr);
		} else {
			/* Outgoing connection */
			if (pinlen > 0) {
				set_pin_length(sba, pinlen);
				memcpy(pr.pin_code, pin, pinlen);
				pr.pin_len = pinlen;
				hci_send_cmd(dev, OGF_LINK_CTL, OCF_PIN_CODE_REPLY,
					PIN_CODE_REPLY_CP_SIZE, &pr);
			} else {
				/* Let PIN helper handle that */ 
				request_pin(dev, sba, ci);
			}
		}
	} else {
		/* Let PIN helper handle that */ 
		request_pin(dev, sba, ci);
	}

	free(cr);

	return;

reject:
	free(cr);

	hci_send_cmd(dev, OGF_LINK_CTL, OCF_PIN_CODE_NEG_REPLY, 6, dba);

	return;
}

static inline void cmd_status(int dev, bdaddr_t *sba, void *ptr)
{
	evt_cmd_status *evt = ptr;

	if (evt->status)
		return;

	if (evt->opcode == cmd_opcode_pack(OGF_LINK_CTL, OCF_INQUIRY))
		hcid_dbus_inquiry_start(sba);
}

static inline void cmd_complete(int dev, bdaddr_t *sba, void *ptr)
{
	evt_cmd_complete *evt = ptr;
	switch (evt->opcode) {
	case cmd_opcode_pack(OGF_LINK_CTL, OCF_INQUIRY_CANCEL):
		hcid_dbus_inquiry_complete(sba);
		break;
	case cmd_opcode_pack(OGF_LINK_CTL, OCF_CREATE_CONN_CANCEL):
		hcid_dbus_create_conn_cancel(sba, ptr);
		break;
	case cmd_opcode_pack(OGF_HOST_CTL, OCF_CHANGE_LOCAL_NAME):
		hcid_dbus_setname_complete(sba);
		break;
	case cmd_opcode_pack(OGF_HOST_CTL, OCF_WRITE_SCAN_ENABLE):
		hcid_dbus_setscan_enable_complete(sba);
		break;
	};
}

static inline void remote_name_information(int dev, bdaddr_t *sba, void *ptr)
{
	evt_remote_name_req_complete *evt = ptr;
	bdaddr_t dba;
	char name[249];

	memset(name, 0, sizeof(name));
	bacpy(&dba, &evt->bdaddr);

	if (!evt->status) {
		memcpy(name, evt->name, 248);
		write_device_name(sba, &dba, name);
	}

	hcid_dbus_remote_name(sba, &dba, evt->status, name);
}

static inline void remote_version_information(int dev, bdaddr_t *sba, void *ptr)
{
	evt_read_remote_version_complete *evt = ptr;
	bdaddr_t dba;

	if (evt->status)
		return;

	if (get_bdaddr(dev, sba, btohs(evt->handle), &dba) < 0)
		return;

	write_version_info(sba, &dba, btohs(evt->manufacturer),
				evt->lmp_ver, btohs(evt->lmp_subver));
}

static inline void inquiry_complete(int dev, bdaddr_t *sba, void *ptr)
{
	hcid_dbus_inquiry_complete(sba);
}

static inline void inquiry_result(int dev, bdaddr_t *sba, int plen, void *ptr)
{
	uint8_t num = *(uint8_t *) ptr++;
	int i;

	for (i = 0; i < num; i++) {
		inquiry_info *info = ptr;
		uint32_t class = info->dev_class[0]
			| (info->dev_class[1] << 8)
			| (info->dev_class[2] << 16);

		hcid_dbus_inquiry_result(sba, &info->bdaddr, class, 0);

		update_lastseen(sba, &info->bdaddr);

		ptr += INQUIRY_INFO_SIZE;
	}
}

static inline void inquiry_result_with_rssi(int dev, bdaddr_t *sba, int plen, void *ptr)
{
	uint8_t num = *(uint8_t *) ptr++;
	int i;

	if (!num)
		return;

	if ((plen - 1) / num == INQUIRY_INFO_WITH_RSSI_AND_PSCAN_MODE_SIZE) {
		for (i = 0; i < num; i++) {
			inquiry_info_with_rssi_and_pscan_mode *info = ptr;
			uint32_t class = info->dev_class[0]
				| (info->dev_class[1] << 8)
				| (info->dev_class[2] << 16);

			hcid_dbus_inquiry_result(sba, &info->bdaddr,
							class, info->rssi);

			update_lastseen(sba, &info->bdaddr);

			ptr += INQUIRY_INFO_WITH_RSSI_AND_PSCAN_MODE_SIZE;
		}
	} else {
		for (i = 0; i < num; i++) {
			inquiry_info_with_rssi *info = ptr;
			uint32_t class = info->dev_class[0]
				| (info->dev_class[1] << 8)
				| (info->dev_class[2] << 16);

			hcid_dbus_inquiry_result(sba, &info->bdaddr,
							class, info->rssi);

			update_lastseen(sba, &info->bdaddr);

			ptr += INQUIRY_INFO_WITH_RSSI_SIZE;
		}
	}
}

static inline void extended_inquiry_result(int dev, bdaddr_t *sba, int plen, void *ptr)
{
	uint8_t num = *(uint8_t *) ptr++;
	int i;

	for (i = 0; i < num; i++) {
		extended_inquiry_info *info = ptr;
		uint32_t class = info->dev_class[0]
			| (info->dev_class[1] << 8)
			| (info->dev_class[2] << 16);

		hcid_dbus_inquiry_result(sba, &info->bdaddr, class, info->rssi);

		update_lastseen(sba, &info->bdaddr);

		ptr += EXTENDED_INQUIRY_INFO_SIZE;
	}
}

static inline void remote_features_information(int dev, bdaddr_t *sba, void *ptr)
{
	evt_read_remote_features_complete *evt = ptr;
	bdaddr_t dba;

	if (evt->status)
		return;

	if (get_bdaddr(dev, sba, btohs(evt->handle), &dba) < 0)
		return;

	write_features_info(sba, &dba, evt->features);
}

static inline void conn_complete(int dev, int dev_id, bdaddr_t *sba, void *ptr)
{
	evt_conn_complete *evt = ptr;
	char filename[PATH_MAX];
	remote_name_req_cp cp_name;
	bdaddr_t tmp;
	struct hci_req_data *data;
	char *str, *local_addr, *peer_addr;

	hcid_dbus_conn_complete(sba, evt->status, evt->handle, &evt->bdaddr);

	if (evt->status)
		return;

	update_lastused(sba, &evt->bdaddr);

	/* Request remote name */
	memset(&cp_name, 0, sizeof(cp_name));
	bacpy(&cp_name.bdaddr, &evt->bdaddr);
	cp_name.pscan_rep_mode = 0x02;

	data = hci_req_data_new(dev_id, &evt->bdaddr, OGF_LINK_CTL,
				OCF_REMOTE_NAME_REQ, EVT_REMOTE_NAME_REQ_COMPLETE,
				&cp_name, REMOTE_NAME_REQ_CP_SIZE);

	hci_req_queue_append(data);

	/* check if the remote version needs be requested */
	baswap(&tmp, sba); local_addr = batostr(&tmp);
	baswap(&tmp, &evt->bdaddr); peer_addr = batostr(&tmp);

	snprintf(filename, sizeof(filename), "%s/%s/manufacturers",
			STORAGEDIR, local_addr);

	str = textfile_get(filename, peer_addr);
	if (!str) {
		read_remote_version_cp cp;

		cp.handle = evt->handle;

		data = hci_req_data_new(dev_id, &evt->bdaddr, OGF_LINK_CTL,
					OCF_READ_REMOTE_VERSION, EVT_READ_REMOTE_VERSION_COMPLETE,
					&cp, READ_REMOTE_VERSION_CP_SIZE);

		hci_req_queue_append(data);
	} else {
		/* skip: remote version found */
		free(str);
	}

	/* check if the remote features needs be requested */
	snprintf(filename, sizeof(filename), "%s/%s/features",
			STORAGEDIR, local_addr);

	str = textfile_get(filename, peer_addr);
	if (!str) {
		read_remote_features_cp cp;

		cp.handle = evt->handle;

		data = hci_req_data_new(dev_id, &evt->bdaddr, OGF_LINK_CTL,
					OCF_READ_REMOTE_FEATURES, EVT_READ_REMOTE_FEATURES_COMPLETE,
					&cp, READ_REMOTE_FEATURES_CP_SIZE);

		hci_req_queue_append(data);
	} else {
		/* skip: remote features found */
		free(str);
	}

	free(local_addr);
	free(peer_addr);

}

static inline void disconn_complete(int dev, bdaddr_t *sba, void *ptr)
{
	evt_disconn_complete *evt = ptr;

	hcid_dbus_disconn_complete(sba, evt->status, evt->handle, evt->reason);
}

static inline void auth_complete(int dev, bdaddr_t *sba, void *ptr)
{
	evt_auth_complete *evt = ptr;
	bdaddr_t dba;

	if (get_bdaddr(dev, sba, evt->handle, &dba) < 0) 
		return;

	if (evt->status)
		hcid_dbus_bonding_process_complete(sba, &dba, evt->status);
}

static gboolean io_security_event(GIOChannel *chan, GIOCondition cond, gpointer data)
{
	unsigned char buf[HCI_MAX_EVENT_SIZE], *ptr = buf;
	struct hci_dev_info *di = (void *) data;
	int type, dev;
	size_t len;
	hci_event_hdr *eh;
	GIOError err;

	if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR)) {
		g_io_channel_close(chan);
		free(data);
		return FALSE;
	}

	if ((err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len))) {
		if (err == G_IO_ERROR_AGAIN)
			return TRUE;
		g_io_channel_close(chan);
		free(data);
		return FALSE;
	}

	type = *ptr++;

	if (type != HCI_EVENT_PKT)
		return TRUE;

	eh = (hci_event_hdr *) ptr;
	ptr += HCI_EVENT_HDR_SIZE;

	dev = g_io_channel_unix_get_fd(chan);

	ioctl(dev, HCIGETDEVINFO, (void *) di);

	if (hci_test_bit(HCI_RAW, &di->flags))
		return TRUE;

	switch (eh->evt) {
	case EVT_CMD_STATUS:
		cmd_status(dev, &di->bdaddr, ptr);
		break;

	case EVT_CMD_COMPLETE:
		cmd_complete(dev, &di->bdaddr, ptr);
		break;

	case EVT_REMOTE_NAME_REQ_COMPLETE:
		remote_name_information(dev, &di->bdaddr, ptr);
		break;

	case EVT_READ_REMOTE_VERSION_COMPLETE:
		remote_version_information(dev, &di->bdaddr, ptr);
		break;

	case EVT_READ_REMOTE_FEATURES_COMPLETE:
		remote_features_information(dev, &di->bdaddr, ptr);
		break;

	case EVT_INQUIRY_COMPLETE:
		inquiry_complete(dev, &di->bdaddr, ptr);
		break;

	case EVT_INQUIRY_RESULT:
		inquiry_result(dev, &di->bdaddr, eh->plen, ptr);
		break;

	case EVT_INQUIRY_RESULT_WITH_RSSI:
		inquiry_result_with_rssi(dev, &di->bdaddr, eh->plen, ptr);
		break;

	case EVT_EXTENDED_INQUIRY_RESULT:
		extended_inquiry_result(dev, &di->bdaddr, eh->plen, ptr);
		break;

	case EVT_CONN_COMPLETE:
		conn_complete(dev, di->dev_id, &di->bdaddr, ptr);
		break;

	case EVT_DISCONN_COMPLETE:
		disconn_complete(dev, &di->bdaddr, ptr);
		break;

	case EVT_AUTH_COMPLETE:
		auth_complete(dev, &di->bdaddr, ptr);
		break;
	}
	/* check for pending cmd request */
	check_pending_hci_req(di->dev_id, eh->evt);

	if (hci_test_bit(HCI_SECMGR, &di->flags))
		return TRUE;

	switch (eh->evt) {
	case EVT_PIN_CODE_REQ:
		pin_code_request(dev, &di->bdaddr, (bdaddr_t *) ptr);
		break;

	case EVT_LINK_KEY_REQ:
		link_key_request(dev, &di->bdaddr, (bdaddr_t *) ptr);
		break;

	case EVT_LINK_KEY_NOTIFY:
		link_key_notify(dev, &di->bdaddr, ptr);
		break;

	case EVT_RETURN_LINK_KEYS:
		return_link_keys(dev, &di->bdaddr, ptr);
		break;
	}

	return TRUE;
}

void start_security_manager(int hdev)
{
	GIOChannel *chan = io_data[hdev].channel;
	struct hci_dev_info *di;
	struct hci_filter flt;
	read_stored_link_key_cp cp;
	int dev;

	if (chan)
		return;

	info("Starting security manager %d", hdev);

	if ((dev = hci_open_dev(hdev)) < 0) {
		error("Can't open device hci%d: %s (%d)",
						hdev, strerror(errno), errno);
		return;
	}

	/* Set filter */
	hci_filter_clear(&flt);
	hci_filter_set_ptype(HCI_EVENT_PKT, &flt);
	hci_filter_set_event(EVT_CMD_STATUS, &flt);
	hci_filter_set_event(EVT_CMD_COMPLETE, &flt);
	hci_filter_set_event(EVT_PIN_CODE_REQ, &flt);
	hci_filter_set_event(EVT_LINK_KEY_REQ, &flt);
	hci_filter_set_event(EVT_LINK_KEY_NOTIFY, &flt);
	hci_filter_set_event(EVT_RETURN_LINK_KEYS, &flt);
	hci_filter_set_event(EVT_REMOTE_NAME_REQ_COMPLETE, &flt);
	hci_filter_set_event(EVT_READ_REMOTE_VERSION_COMPLETE, &flt);
	hci_filter_set_event(EVT_READ_REMOTE_FEATURES_COMPLETE, &flt);
	hci_filter_set_event(EVT_INQUIRY_COMPLETE, &flt);
	hci_filter_set_event(EVT_INQUIRY_RESULT, &flt);
	hci_filter_set_event(EVT_INQUIRY_RESULT_WITH_RSSI, &flt);
	hci_filter_set_event(EVT_EXTENDED_INQUIRY_RESULT, &flt);
	hci_filter_set_event(EVT_CONN_COMPLETE, &flt);
	hci_filter_set_event(EVT_DISCONN_COMPLETE, &flt);
	hci_filter_set_event(EVT_AUTH_COMPLETE, &flt);
	if (setsockopt(dev, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) {
		error("Can't set filter on hci%d: %s (%d)",
						hdev, strerror(errno), errno);
		close(dev);
		return;
	}

	di = malloc(sizeof(*di));
	if (!di) {
		error("Can't allocate device info buffer: %s (%d)",
							strerror(errno), errno);
		close(dev);
		return;
	}

	di->dev_id = hdev;
	if (ioctl(dev, HCIGETDEVINFO, (void *)di)) {
		error("Can't get device info: %s (%d)",
							strerror(errno), errno);
		close(dev);
		return;
	}

	chan = g_io_channel_unix_new(dev);
	io_data[hdev].watch_id = g_io_add_watch(chan, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
						io_security_event, (void *) di);

	io_data[hdev].channel = chan;
	io_data[hdev].pin_length = -1;

	if (hci_test_bit(HCI_RAW, &di->flags))
		return;

	bacpy(&cp.bdaddr, BDADDR_ANY);
	cp.read_all = 1;

	hci_send_cmd(dev, OGF_HOST_CTL, OCF_READ_STORED_LINK_KEY,
			READ_STORED_LINK_KEY_CP_SIZE, (void *) &cp);
}

void stop_security_manager(int hdev)
{
	GIOChannel *chan = io_data[hdev].channel;

	if (!chan)
		return;

	info("Stoping security manager %d", hdev);

	/* this is a bit sneaky. closing the fd will cause the event
	   loop to call us right back with G_IO_NVAL set, at which
	   point we will see it and clean things up */
	close(g_io_channel_unix_get_fd(chan));
	g_io_remove_watch(io_data[hdev].watch_id);
	io_data[hdev].watch_id = -1;
	io_data[hdev].channel = NULL;
	io_data[hdev].pin_length = -1;
}

void init_security_data(void)
{
	pairing = hcid.pairing;
}