le.c revision 361165 
1/*
2 * le.c
3 *
4 * Copyright (c) 2015 Takanori Watanabe <takawata@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $Id: hccontrol.c,v 1.5 2003/09/05 00:38:24 max Exp $
29 * $FreeBSD: stable/11/usr.sbin/bluetooth/hccontrol/le.c 361165 2020-05-18 08:57:55Z hselasky $
30 */
31
32#include <sys/types.h>
33#include <sys/ioctl.h>
34#include <sys/sysctl.h>
35#include <sys/select.h>
36#include <assert.h>
37#include <bitstring.h>
38#include <err.h>
39#include <errno.h>
40#include <netgraph/ng_message.h>
41#include <errno.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <string.h>
45#include <unistd.h>
46#include <stdint.h>
47#define L2CAP_SOCKET_CHECKED
48#include <bluetooth.h>
49#include "hccontrol.h"
50
51static int le_set_scan_param(int s, int argc, char *argv[]);
52static int le_set_scan_enable(int s, int argc, char *argv[]);
53static int parse_param(int argc, char *argv[], char *buf, int *len);
54static int le_set_scan_response(int s, int argc, char *argv[]);
55static int le_read_supported_states(int s, int argc, char *argv[]);
56static int le_read_local_supported_features(int s, int argc ,char *argv[]);
57static int set_le_event_mask(int s, uint64_t mask);
58static int set_event_mask(int s, uint64_t mask);
59static int le_enable(int s, int argc, char *argv[]);
60
61static int
62le_set_scan_param(int s, int argc, char *argv[])
63{
64	int type;
65	int interval;
66	int window;
67	int adrtype;
68	int policy;
69	int e, n;
70
71	ng_hci_le_set_scan_parameters_cp cp;
72	ng_hci_le_set_scan_parameters_rp rp;
73
74	if (argc != 5)
75		return USAGE;
76
77	if (strcmp(argv[0], "active") == 0)
78		type = 1;
79	else if (strcmp(argv[0], "passive") == 0)
80		type = 0;
81	else
82		return USAGE;
83
84	interval = (int)(atof(argv[1])/0.625);
85	interval = (interval < 4)? 4: interval;
86	window = (int)(atof(argv[2])/0.625);
87	window = (window < 4) ? 4 : interval;
88
89	if (strcmp(argv[3], "public") == 0)
90		adrtype = 0;
91	else if (strcmp(argv[3], "random") == 0)
92		adrtype = 1;
93	else
94		return USAGE;
95
96	if (strcmp(argv[4], "all") == 0)
97		policy = 0;
98	else if (strcmp(argv[4], "whitelist") == 0)
99		policy = 1;
100	else
101		return USAGE;
102
103	cp.le_scan_type = type;
104	cp.le_scan_interval = interval;
105	cp.own_address_type = adrtype;
106	cp.le_scan_window = window;
107	cp.scanning_filter_policy = policy;
108	n = sizeof(rp);
109	e = hci_request(s, NG_HCI_OPCODE(NG_HCI_OGF_LE,
110		NG_HCI_OCF_LE_SET_SCAN_PARAMETERS),
111		(void *)&cp, sizeof(cp), (void *)&rp, &n);
112
113	return 0;
114}
115
116static int
117le_set_scan_enable(int s, int argc, char *argv[])
118{
119	ng_hci_le_set_scan_enable_cp cp;
120	ng_hci_le_set_scan_enable_rp rp;
121	int e, n, enable = 0;
122
123	if (argc != 1)
124		return USAGE;
125
126	if (strcmp(argv[0], "enable") == 0)
127		enable = 1;
128	else if (strcmp(argv[0], "disable") != 0)
129		return USAGE;
130
131	n = sizeof(rp);
132	cp.le_scan_enable = enable;
133	cp.filter_duplicates = 0;
134	e = hci_request(s, NG_HCI_OPCODE(NG_HCI_OGF_LE,
135		NG_HCI_OCF_LE_SET_SCAN_ENABLE),
136		(void *)&cp, sizeof(cp), (void *)&rp, &n);
137
138	if (e != 0 || rp.status != 0)
139		return ERROR;
140
141	return OK;
142}
143
144static int
145parse_param(int argc, char *argv[], char *buf, int *len)
146{
147	char *buflast  =  buf + (*len);
148	char *curbuf = buf;
149	char *token,*lenpos;
150	int ch;
151	int datalen;
152	uint16_t value;
153	optreset = 1;
154	optind = 0;
155	while ((ch = getopt(argc, argv , "n:f:u:")) != -1) {
156		switch(ch){
157		case 'n':
158			datalen = strlen(optarg);
159			if ((curbuf + datalen + 2) >= buflast)
160				goto done;
161			curbuf[0] = datalen + 1;
162			curbuf[1] = 8;
163			curbuf += 2;
164			memcpy(curbuf, optarg, datalen);
165			curbuf += datalen;
166			break;
167		case 'f':
168			if (curbuf+3 > buflast)
169				goto done;
170			curbuf[0] = 2;
171			curbuf[1] = 1;
172			curbuf[2] = atoi(optarg);
173			curbuf += 3;
174			break;
175		case 'u':
176			lenpos = buf;
177			if ((buf+2) >= buflast)
178				goto done;
179			curbuf[1] = 2;
180			*lenpos = 1;
181			curbuf += 2;
182			while ((token = strsep(&optarg, ",")) != NULL) {
183				value = strtol(token, NULL, 16);
184				if ((curbuf+2) >= buflast)
185					break;
186				curbuf[0] = value &0xff;
187				curbuf[1] = (value>>8)&0xff;
188				curbuf += 2;
189			}
190
191		}
192	}
193done:
194	*len = curbuf - buf;
195
196	return OK;
197}
198
199static int
200le_set_scan_response(int s, int argc, char *argv[])
201{
202	ng_hci_le_set_scan_response_data_cp cp;
203	ng_hci_le_set_scan_response_data_rp rp;
204	int n;
205	int e;
206	int len;
207	char buf[NG_HCI_ADVERTISING_DATA_SIZE];
208
209	len = sizeof(buf);
210	parse_param(argc, argv, buf, &len);
211	memset(cp.scan_response_data, 0, sizeof(cp.scan_response_data));
212	cp.scan_response_data_length = len;
213	memcpy(cp.scan_response_data, buf, len);
214	n = sizeof(rp);
215	e = hci_request(s, NG_HCI_OPCODE(NG_HCI_OGF_LE,
216			NG_HCI_OCF_LE_SET_SCAN_RESPONSE_DATA),
217			(void *)&cp, sizeof(cp), (void *)&rp, &n);
218
219	printf("SET SCAN RESPONSE %d %d %d\n", e, rp.status, n);
220
221	return OK;
222}
223
224static int
225le_read_local_supported_features(int s, int argc ,char *argv[])
226{
227	ng_hci_le_read_local_supported_features_rp rp;
228	int n = sizeof(rp);
229
230	union {
231		uint64_t raw;
232		uint8_t octets[8];
233	} le_features;
234
235	char buffer[2048];
236
237	if (hci_simple_request(s,
238			NG_HCI_OPCODE(NG_HCI_OGF_LE,
239			NG_HCI_OCF_LE_READ_LOCAL_SUPPORTED_FEATURES),
240			(void *)&rp, &n) == ERROR)
241		return (ERROR);
242
243	if (rp.status != 0x00) {
244		fprintf(stdout, "Status: %s [%#02x]\n",
245			hci_status2str(rp.status), rp.status);
246		return (FAILED);
247	}
248
249	le_features.raw = rp.le_features;
250
251	fprintf(stdout, "LE Features: ");
252	for(int i = 0; i < 8; i++)
253                fprintf(stdout, " %#02x", le_features.octets[i]);
254	fprintf(stdout, "\n%s\n", hci_le_features2str(le_features.octets,
255		buffer, sizeof(buffer)));
256	fprintf(stdout, "\n");
257
258	return OK;
259}
260
261static int
262le_read_supported_states(int s, int argc, char *argv[])
263{
264	ng_hci_le_read_supported_states_rp rp;
265	int n = sizeof(rp);
266
267	if (hci_simple_request(s, NG_HCI_OPCODE(
268					NG_HCI_OGF_LE,
269					NG_HCI_OCF_LE_READ_SUPPORTED_STATES),
270			       		(void *)&rp, &n) == ERROR)
271		return (ERROR);
272
273	if (rp.status != 0x00) {
274		fprintf(stdout, "Status: %s [%#02x]\n",
275			hci_status2str(rp.status), rp.status);
276		return (FAILED);
277	}
278
279	fprintf(stdout, "LE States: %jx\n", rp.le_states);
280
281	return (OK);
282}
283
284static int
285set_le_event_mask(int s, uint64_t mask)
286{
287	ng_hci_le_set_event_mask_cp semc;
288	ng_hci_le_set_event_mask_rp rp;
289	int i, n ,e;
290
291	n = sizeof(rp);
292
293	for (i=0; i < NG_HCI_LE_EVENT_MASK_SIZE; i++) {
294		semc.event_mask[i] = mask&0xff;
295		mask >>= 8;
296	}
297	e = hci_request(s, NG_HCI_OPCODE(NG_HCI_OGF_LE,
298			NG_HCI_OCF_LE_SET_EVENT_MASK),
299			(void *)&semc, sizeof(semc), (void *)&rp, &n);
300
301	return 0;
302}
303
304static int
305set_event_mask(int s, uint64_t mask)
306{
307	ng_hci_set_event_mask_cp semc;
308	ng_hci_set_event_mask_rp rp;
309	int i, n, e;
310
311	n = sizeof(rp);
312
313	for (i=0; i < NG_HCI_EVENT_MASK_SIZE; i++) {
314		semc.event_mask[i] = mask&0xff;
315		mask >>= 8;
316	}
317	e = hci_request(s, NG_HCI_OPCODE(NG_HCI_OGF_HC_BASEBAND,
318			NG_HCI_OCF_SET_EVENT_MASK),
319			(void *)&semc, sizeof(semc), (void *)&rp, &n);
320
321	return 0;
322}
323
324static
325int le_enable(int s, int argc, char *argv[])
326{
327	if (argc != 1)
328		return USAGE;
329
330	if (strcasecmp(argv[0], "enable") == 0) {
331		set_event_mask(s, NG_HCI_EVENT_MASK_DEFAULT |
332			       NG_HCI_EVENT_MASK_LE);
333		set_le_event_mask(s, NG_HCI_LE_EVENT_MASK_ALL);
334	} else if (strcasecmp(argv[0], "disable") == 0)
335		set_event_mask(s, NG_HCI_EVENT_MASK_DEFAULT);
336	else
337		return USAGE;
338
339	return OK;
340}
341
342struct hci_command le_commands[] = {
343{
344	"le_enable",
345	"le_enable [enable|disable] \n"
346	"Enable LE event ",
347	&le_enable,
348},
349  {
350	  "le_read_local_supported_features",
351	  "le_read_local_supported_features\n"
352	  "read local supported features mask",
353	  &le_read_local_supported_features,
354  },
355  {
356	  "le_read_supported_states",
357	  "le_read_supported_states\n"
358	  "read supported status"
359	  ,
360	  &le_read_supported_states,
361  },
362  {
363	  "le_set_scan_response",
364	  "le_set_scan_response -n $name -f $flag -u $uuid16,$uuid16 \n"
365	  "set LE scan response data"
366	  ,
367	  &le_set_scan_response,
368  },
369  {
370	  "le_set_scan_enable",
371	  "le_set_scan_enable [enable|disable] \n"
372	  "enable or disable LE device scan",
373	  &le_set_scan_enable
374  },
375  {
376	  "le_set_scan_param",
377	  "le_set_scan_param [active|passive] interval(ms) window(ms) [public|random] [all|whitelist] \n"
378	  "set LE device scan parameter",
379	  &le_set_scan_param
380  },
381};
382