1 /* 2 * l2ping.c 3 * 4 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com> 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: l2ping.c,v 1.5 2003/05/16 19:54:40 max Exp $ 29 * $FreeBSD$ 30 */ 31 32 #include <sys/ioctl.h> 33 #include <sys/time.h> 34 #include <arpa/inet.h> 35 #include <netinet/in.h> 36 #include <assert.h> 37 #include <bluetooth.h> 38 #include <err.h> 39 #include <errno.h> 40 #include <limits.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 static void usage (void); 47 static void tv_sub (struct timeval *, struct timeval const *); 48 static double tv2msec (struct timeval const *); 49 50 #undef min 51 #define min(x, y) (((x) > (y))? (y) : (x)) 52 53 static char const pattern[] = "1234567890-"; 54 #define PATTERN_SIZE (sizeof(pattern) - 1) 55 56 /* 57 * Main 58 */ 59 60 int 61 main(int argc, char *argv[]) 62 { 63 bdaddr_t src, dst; 64 struct hostent *he; 65 uint8_t *echo_data; 66 struct sockaddr_l2cap sa; 67 int32_t n, s, count, wait, flood, echo_size, numeric; 68 char *endp, *rname; 69 70 /* Set defaults */ 71 memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src)); 72 memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)); 73 74 echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t)); 75 if (echo_data == NULL) { 76 fprintf(stderr, "Failed to allocate echo data buffer"); 77 exit(1); 78 } 79 80 /* 81 * Set default echo size to the NG_L2CAP_MTU_MINIMUM minus 82 * the size of the L2CAP signalling command header. 83 */ 84 85 echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t); 86 count = -1; /* unimited */ 87 wait = 1; /* sec */ 88 flood = 0; 89 numeric = 0; 90 91 /* Parse command line arguments */ 92 while ((n = getopt(argc, argv, "a:c:fi:nS:s:h")) != -1) { 93 switch (n) { 94 case 'a': 95 if (!bt_aton(optarg, &dst)) { 96 if ((he = bt_gethostbyname(optarg)) == NULL) 97 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 98 99 memcpy(&dst, he->h_addr, sizeof(dst)); 100 } 101 break; 102 103 case 'c': 104 count = strtol(optarg, &endp, 10); 105 if (count <= 0 || *endp != '\0') 106 usage(); 107 break; 108 109 case 'f': 110 flood = 1; 111 break; 112 113 case 'i': 114 wait = strtol(optarg, &endp, 10); 115 if (wait <= 0 || *endp != '\0') 116 usage(); 117 break; 118 119 case 'n': 120 numeric = 1; 121 break; 122 123 case 'S': 124 if (!bt_aton(optarg, &src)) { 125 if ((he = bt_gethostbyname(optarg)) == NULL) 126 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 127 128 memcpy(&src, he->h_addr, sizeof(src)); 129 } 130 break; 131 132 case 's': 133 echo_size = strtol(optarg, &endp, 10); 134 if (echo_size < sizeof(int32_t) || 135 echo_size > NG_L2CAP_MAX_ECHO_SIZE || 136 *endp != '\0') 137 usage(); 138 break; 139 140 case 'h': 141 default: 142 usage(); 143 break; 144 } 145 } 146 147 if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0) 148 usage(); 149 150 he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH); 151 if (he == NULL || he->h_name == NULL || he->h_name[0] == '\0' || numeric) 152 asprintf(&rname, "%s", bt_ntoa(&dst, NULL)); 153 else 154 rname = strdup(he->h_name); 155 156 if (rname == NULL) 157 errx(1, "Failed to create remote hostname"); 158 159 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP); 160 if (s < 0) 161 err(2, "Could not create socket"); 162 163 memset(&sa, 0, sizeof(sa)); 164 sa.l2cap_len = sizeof(sa); 165 sa.l2cap_family = AF_BLUETOOTH; 166 memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr)); 167 168 if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 169 err(3, 170 "Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 171 172 memset(&sa, 0, sizeof(sa)); 173 sa.l2cap_len = sizeof(sa); 174 sa.l2cap_family = AF_BLUETOOTH; 175 memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr)); 176 177 if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 178 err(4, 179 "Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 180 181 /* Fill pattern */ 182 for (n = 0; n < echo_size; ) { 183 int32_t avail = min(echo_size - n, PATTERN_SIZE); 184 185 memcpy(echo_data + n, pattern, avail); 186 n += avail; 187 } 188 189 /* Start ping'ing */ 190 for (n = 0; count == -1 || count > 0; n ++) { 191 struct ng_btsocket_l2cap_raw_ping r; 192 struct timeval a, b; 193 int32_t fail; 194 195 if (gettimeofday(&a, NULL) < 0) 196 err(5, "Could not gettimeofday(a)"); 197 198 fail = 0; 199 *((int32_t *) echo_data) = htonl(n); 200 201 r.result = 0; 202 r.echo_size = echo_size; 203 r.echo_data = echo_data; 204 if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) { 205 r.result = errno; 206 fail = 1; 207 /* 208 warn("Could not ping, dst bdaddr=%s", 209 bt_ntoa(&r.echo_dst, NULL)); 210 */ 211 } 212 213 if (gettimeofday(&b, NULL) < 0) 214 err(7, "Could not gettimeofday(b)"); 215 216 tv_sub(&b, &a); 217 218 fprintf(stdout, 219 "%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n", 220 r.echo_size, 221 rname, 222 ntohl(*((int32_t *)(r.echo_data))), 223 tv2msec(&b), r.result, 224 ((fail == 0)? "" : strerror(errno))); 225 226 if (!flood) { 227 /* Wait */ 228 a.tv_sec = wait; 229 a.tv_usec = 0; 230 select(0, NULL, NULL, NULL, &a); 231 } 232 233 if (count != -1) 234 count --; 235 } 236 237 free(rname); 238 free(echo_data); 239 close(s); 240 241 return (0); 242 } /* main */ 243 244 /* 245 * a -= b, for timevals 246 */ 247 248 static void 249 tv_sub(struct timeval *a, struct timeval const *b) 250 { 251 if (a->tv_usec < b->tv_usec) { 252 a->tv_usec += 1000000; 253 a->tv_sec -= 1; 254 } 255 256 a->tv_usec -= b->tv_usec; 257 a->tv_sec -= b->tv_sec; 258 } /* tv_sub */ 259 260 /* 261 * convert tv to msec 262 */ 263 264 static double 265 tv2msec(struct timeval const *tvp) 266 { 267 return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0); 268 } /* tv2msec */ 269 270 /* 271 * Usage 272 */ 273 274 static void 275 usage(void) 276 { 277 fprintf(stderr, "Usage: l2ping [-fhn] -a remote " \ 278 "[-c count] [-i wait] [-S source] [-s size]\n"); 279 fprintf(stderr, "Where:\n"); 280 fprintf(stderr, " -a remote Specify remote device to ping\n"); 281 fprintf(stderr, " -c count Number of packets to send\n"); 282 fprintf(stderr, " -f No delay between packets\n"); 283 fprintf(stderr, " -h Display this message\n"); 284 fprintf(stderr, " -i wait Delay between packets (sec)\n"); 285 fprintf(stderr, " -n Numeric output only\n"); 286 fprintf(stderr, " -S source Specify source device\n"); 287 fprintf(stderr, " -s size Packet size (bytes), " \ 288 "between %zd and %zd\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE); 289 290 exit(255); 291 } /* usage */ 292 293