1 /*- 2 * l2ping.c 3 * 4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5 * 6 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: l2ping.c,v 1.5 2003/05/16 19:54:40 max Exp $ 31 * $FreeBSD$ 32 */ 33 34 #include <sys/ioctl.h> 35 #include <sys/time.h> 36 #include <arpa/inet.h> 37 #include <netinet/in.h> 38 #include <assert.h> 39 #define L2CAP_SOCKET_CHECKED 40 #include <bluetooth.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <limits.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 static void usage (void); 50 static void tv_sub (struct timeval *, struct timeval const *); 51 static double tv2msec (struct timeval const *); 52 53 #undef min 54 #define min(x, y) (((x) > (y))? (y) : (x)) 55 56 static char const pattern[] = "1234567890-"; 57 #define PATTERN_SIZE (sizeof(pattern) - 1) 58 59 /* 60 * Main 61 */ 62 63 int 64 main(int argc, char *argv[]) 65 { 66 bdaddr_t src, dst; 67 struct hostent *he; 68 uint8_t *echo_data; 69 struct sockaddr_l2cap sa; 70 int32_t n, s, count, wait, flood, echo_size, numeric; 71 char *endp, *rname; 72 73 /* Set defaults */ 74 memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src)); 75 memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)); 76 77 echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t)); 78 if (echo_data == NULL) { 79 fprintf(stderr, "Failed to allocate echo data buffer"); 80 exit(1); 81 } 82 83 /* 84 * Set default echo size to the NG_L2CAP_MTU_MINIMUM minus 85 * the size of the L2CAP signalling command header. 86 */ 87 88 echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t); 89 count = -1; /* unimited */ 90 wait = 1; /* sec */ 91 flood = 0; 92 numeric = 0; 93 94 /* Parse command line arguments */ 95 while ((n = getopt(argc, argv, "a:c:fi:nS:s:h")) != -1) { 96 switch (n) { 97 case 'a': 98 if (!bt_aton(optarg, &dst)) { 99 if ((he = bt_gethostbyname(optarg)) == NULL) 100 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 101 102 memcpy(&dst, he->h_addr, sizeof(dst)); 103 } 104 break; 105 106 case 'c': 107 count = strtol(optarg, &endp, 10); 108 if (count <= 0 || *endp != '\0') 109 usage(); 110 break; 111 112 case 'f': 113 flood = 1; 114 break; 115 116 case 'i': 117 wait = strtol(optarg, &endp, 10); 118 if (wait <= 0 || *endp != '\0') 119 usage(); 120 break; 121 122 case 'n': 123 numeric = 1; 124 break; 125 126 case 'S': 127 if (!bt_aton(optarg, &src)) { 128 if ((he = bt_gethostbyname(optarg)) == NULL) 129 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 130 131 memcpy(&src, he->h_addr, sizeof(src)); 132 } 133 break; 134 135 case 's': 136 echo_size = strtol(optarg, &endp, 10); 137 if (echo_size < sizeof(int32_t) || 138 echo_size > NG_L2CAP_MAX_ECHO_SIZE || 139 *endp != '\0') 140 usage(); 141 break; 142 143 case 'h': 144 default: 145 usage(); 146 break; 147 } 148 } 149 150 if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0) 151 usage(); 152 153 he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH); 154 if (he == NULL || he->h_name == NULL || he->h_name[0] == '\0' || numeric) 155 asprintf(&rname, "%s", bt_ntoa(&dst, NULL)); 156 else 157 rname = strdup(he->h_name); 158 159 if (rname == NULL) 160 errx(1, "Failed to create remote hostname"); 161 162 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP); 163 if (s < 0) 164 err(2, "Could not create socket"); 165 166 memset(&sa, 0, sizeof(sa)); 167 sa.l2cap_len = sizeof(sa); 168 sa.l2cap_family = AF_BLUETOOTH; 169 memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr)); 170 171 if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 172 err(3, 173 "Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 174 175 memset(&sa, 0, sizeof(sa)); 176 sa.l2cap_len = sizeof(sa); 177 sa.l2cap_family = AF_BLUETOOTH; 178 memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr)); 179 180 if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 181 err(4, 182 "Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 183 184 /* Fill pattern */ 185 for (n = 0; n < echo_size; ) { 186 int32_t avail = min(echo_size - n, PATTERN_SIZE); 187 188 memcpy(echo_data + n, pattern, avail); 189 n += avail; 190 } 191 192 /* Start ping'ing */ 193 for (n = 0; count == -1 || count > 0; n ++) { 194 struct ng_btsocket_l2cap_raw_ping r; 195 struct timeval a, b; 196 int32_t fail; 197 198 if (gettimeofday(&a, NULL) < 0) 199 err(5, "Could not gettimeofday(a)"); 200 201 fail = 0; 202 *((int32_t *) echo_data) = htonl(n); 203 204 r.result = 0; 205 r.echo_size = echo_size; 206 r.echo_data = echo_data; 207 if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) { 208 r.result = errno; 209 fail = 1; 210 /* 211 warn("Could not ping, dst bdaddr=%s", 212 bt_ntoa(&r.echo_dst, NULL)); 213 */ 214 } 215 216 if (gettimeofday(&b, NULL) < 0) 217 err(7, "Could not gettimeofday(b)"); 218 219 tv_sub(&b, &a); 220 221 fprintf(stdout, 222 "%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n", 223 r.echo_size, 224 rname, 225 ntohl(*((int32_t *)(r.echo_data))), 226 tv2msec(&b), r.result, 227 ((fail == 0)? "" : strerror(errno))); 228 229 if (!flood) { 230 /* Wait */ 231 a.tv_sec = wait; 232 a.tv_usec = 0; 233 select(0, NULL, NULL, NULL, &a); 234 } 235 236 if (count != -1) 237 count --; 238 } 239 240 free(rname); 241 free(echo_data); 242 close(s); 243 244 return (0); 245 } /* main */ 246 247 /* 248 * a -= b, for timevals 249 */ 250 251 static void 252 tv_sub(struct timeval *a, struct timeval const *b) 253 { 254 if (a->tv_usec < b->tv_usec) { 255 a->tv_usec += 1000000; 256 a->tv_sec -= 1; 257 } 258 259 a->tv_usec -= b->tv_usec; 260 a->tv_sec -= b->tv_sec; 261 } /* tv_sub */ 262 263 /* 264 * convert tv to msec 265 */ 266 267 static double 268 tv2msec(struct timeval const *tvp) 269 { 270 return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0); 271 } /* tv2msec */ 272 273 /* 274 * Usage 275 */ 276 277 static void 278 usage(void) 279 { 280 fprintf(stderr, "Usage: l2ping [-fhn] -a remote " \ 281 "[-c count] [-i wait] [-S source] [-s size]\n"); 282 fprintf(stderr, "Where:\n"); 283 fprintf(stderr, " -a remote Specify remote device to ping\n"); 284 fprintf(stderr, " -c count Number of packets to send\n"); 285 fprintf(stderr, " -f No delay between packets\n"); 286 fprintf(stderr, " -h Display this message\n"); 287 fprintf(stderr, " -i wait Delay between packets (sec)\n"); 288 fprintf(stderr, " -n Numeric output only\n"); 289 fprintf(stderr, " -S source Specify source device\n"); 290 fprintf(stderr, " -s size Packet size (bytes), " \ 291 "between %zd and %zd\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE); 292 293 exit(255); 294 } /* usage */ 295 296