summaryrefslogtreecommitdiffstats
path: root/usr.sbin/bluetooth/l2ping/l2ping.c
blob: 4baa3540d14b1553af62cf3de8351b2a50349702 (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
/*
 * l2ping.c
 *
 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: l2ping.c,v 1.5 2003/05/16 19:54:40 max Exp $
 * $FreeBSD$
 */

#include <sys/ioctl.h>
#include <sys/time.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <assert.h>
#include <bluetooth.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

static void	usage	(void);
static void	tv_sub	(struct timeval *, struct timeval const *);
static double	tv2msec	(struct timeval const *);

#undef	min
#define	min(x, y)	(((x) > (y))? (y) : (x))

static char const		pattern[] = "1234567890-";
#define PATTERN_SIZE		(sizeof(pattern) - 1)

/* 
 * Main 
 */

int
main(int argc, char *argv[])
{
	bdaddr_t		 src, dst;
	struct hostent		*he;
	uint8_t			*echo_data;
	struct sockaddr_l2cap	 sa;
	int32_t			 n, s, count, wait, flood, echo_size, numeric;
	char			*endp, *rname;

	/* Set defaults */
	memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src));
	memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst));

	echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t));
	if (echo_data == NULL) {
		fprintf(stderr, "Failed to allocate echo data buffer");
		exit(1);
	}

	/*
	 * Set default echo size to the NG_L2CAP_MTU_MINIMUM minus
	 * the size of the L2CAP signalling command header.
	 */

	echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t);
	count = -1; /* unimited */
	wait = 1;   /* sec */
	flood = 0;
	numeric = 0;

	/* Parse command line arguments */
	while ((n = getopt(argc, argv, "a:c:fi:nS:s:h")) != -1) {
		switch (n) {
		case 'a':
			if (!bt_aton(optarg, &dst)) {
				if ((he = bt_gethostbyname(optarg)) == NULL)
					errx(1, "%s: %s", optarg, hstrerror(h_errno));

				memcpy(&dst, he->h_addr, sizeof(dst));
			}
			break;

		case 'c':
			count = strtol(optarg, &endp, 10);
			if (count <= 0 || *endp != '\0')
				usage();
			break;

		case 'f':
			flood = 1;
			break;

		case 'i':
			wait = strtol(optarg, &endp, 10);
			if (wait <= 0 || *endp != '\0')
				usage();
			break;

		case 'n':
			numeric = 1;
			break;

		case 'S':
			if (!bt_aton(optarg, &src)) {
				if ((he = bt_gethostbyname(optarg)) == NULL)
					errx(1, "%s: %s", optarg, hstrerror(h_errno));

				memcpy(&src, he->h_addr, sizeof(src));
			}
			break;

		case 's':
                        echo_size = strtol(optarg, &endp, 10);
                        if (echo_size < sizeof(int32_t) ||
			    echo_size > NG_L2CAP_MAX_ECHO_SIZE ||
			    *endp != '\0')
				usage();
			break;

		case 'h':
		default:
			usage();
			break;
		}
	}

	if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0)
		usage();

	he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH);
	if (he == NULL || he->h_name == NULL || he->h_name[0] == '\0' || numeric)
		asprintf(&rname, "%s", bt_ntoa(&dst, NULL));
	else
		rname = strdup(he->h_name);

	if (rname == NULL)
		errx(1, "Failed to create remote hostname");

	s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP);
	if (s < 0)
		err(2, "Could not create socket");

	memset(&sa, 0, sizeof(sa));
	sa.l2cap_len = sizeof(sa);
	sa.l2cap_family = AF_BLUETOOTH;
	memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr));

	if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
		err(3,
"Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));

	memset(&sa, 0, sizeof(sa));
	sa.l2cap_len = sizeof(sa);
	sa.l2cap_family = AF_BLUETOOTH;
	memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr));

	if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
		err(4,
"Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));

	/* Fill pattern */
	for (n = 0; n < echo_size; ) {
		int32_t	avail = min(echo_size - n, PATTERN_SIZE);

		memcpy(echo_data + n, pattern, avail);
		n += avail;
	}

	/* Start ping'ing */
	for (n = 0; count == -1 || count > 0; n ++) {
		struct ng_btsocket_l2cap_raw_ping	r;
		struct timeval				a, b;
		int32_t					fail;

		if (gettimeofday(&a, NULL) < 0)
			err(5, "Could not gettimeofday(a)");

		fail = 0;
		*((int32_t *) echo_data) = htonl(n);

		r.result = 0;
		r.echo_size = echo_size;
		r.echo_data = echo_data;
		if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) {
			r.result = errno;
			fail = 1;
/*
			warn("Could not ping, dst bdaddr=%s",
				bt_ntoa(&r.echo_dst, NULL));
*/
		}

		if (gettimeofday(&b, NULL) < 0)
			err(7, "Could not gettimeofday(b)");

		tv_sub(&b, &a);

		fprintf(stdout,
"%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n",
			r.echo_size,
			rname,
			ntohl(*((int32_t *)(r.echo_data))),
			tv2msec(&b), r.result,
			((fail == 0)? "" : strerror(errno)));

		if (!flood) {
			/* Wait */
			a.tv_sec = wait;
			a.tv_usec = 0;
			select(0, NULL, NULL, NULL, &a);
		}

		if (count != -1)
			count --;
	}

	free(rname);
	free(echo_data);
	close(s);

	return (0);
} /* main */

/* 
 * a -= b, for timevals 
 */

static void
tv_sub(struct timeval *a, struct timeval const *b)
{
	if (a->tv_usec < b->tv_usec) {
		a->tv_usec += 1000000;
		a->tv_sec -= 1;
	}

	a->tv_usec -= b->tv_usec;
	a->tv_sec -= b->tv_sec;
} /* tv_sub */

/* 
 * convert tv to msec 
 */

static double
tv2msec(struct timeval const *tvp)
{
	return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0);
} /* tv2msec */

/* 
 * Usage 
 */

static void
usage(void)
{
	fprintf(stderr, "Usage: l2ping [-fhn] -a remote " \
		"[-c count] [-i wait] [-S source] [-s size]\n");
	fprintf(stderr, "Where:\n");
	fprintf(stderr, "  -a remote  Specify remote device to ping\n");
	fprintf(stderr, "  -c count   Number of packets to send\n");
	fprintf(stderr, "  -f         No delay between packets\n");
	fprintf(stderr, "  -h         Display this message\n");
	fprintf(stderr, "  -i wait    Delay between packets (sec)\n");
	fprintf(stderr, "  -n         Numeric output only\n");
	fprintf(stderr, "  -S source  Specify source device\n");
	fprintf(stderr, "  -s size    Packet size (bytes), " \
		"between %zd and %zd\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE);
	
	exit(255);
} /* usage */

OpenPOWER on IntegriCloud