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 #define L2CAP_SOCKET_CHECKED 38 #include <bluetooth.h> 39 #include <err.h> 40 #include <errno.h> 41 #include <limits.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 static void usage (void); 48 static void tv_sub (struct timeval *, struct timeval const *); 49 static double tv2msec (struct timeval const *); 50 51 #undef min 52 #define min(x, y) (((x) > (y))? (y) : (x)) 53 54 static char const pattern[] = "1234567890-"; 55 #define PATTERN_SIZE (sizeof(pattern) - 1) 56 57 /* 58 * Main 59 */ 60 61 int 62 main(int argc, char *argv[]) 63 { 64 bdaddr_t src, dst; 65 struct hostent *he; 66 uint8_t *echo_data; 67 struct sockaddr_l2cap sa; 68 int32_t n, s, count, wait, flood, echo_size, numeric; 69 char *endp, *rname; 70 71 /* Set defaults */ 72 memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src)); 73 memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)); 74 75 echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t)); 76 if (echo_data == NULL) { 77 fprintf(stderr, "Failed to allocate echo data buffer"); 78 exit(1); 79 } 80 81 /* 82 * Set default echo size to the NG_L2CAP_MTU_MINIMUM minus 83 * the size of the L2CAP signalling command header. 84 */ 85 86 echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t); 87 count = -1; /* unimited */ 88 wait = 1; /* sec */ 89 flood = 0; 90 numeric = 0; 91 92 /* Parse command line arguments */ 93 while ((n = getopt(argc, argv, "a:c:fi:nS:s:h")) != -1) { 94 switch (n) { 95 case 'a': 96 if (!bt_aton(optarg, &dst)) { 97 if ((he = bt_gethostbyname(optarg)) == NULL) 98 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 99 100 memcpy(&dst, he->h_addr, sizeof(dst)); 101 } 102 break; 103 104 case 'c': 105 count = strtol(optarg, &endp, 10); 106 if (count <= 0 || *endp != '\0') 107 usage(); 108 break; 109 110 case 'f': 111 flood = 1; 112 break; 113 114 case 'i': 115 wait = strtol(optarg, &endp, 10); 116 if (wait <= 0 || *endp != '\0') 117 usage(); 118 break; 119 120 case 'n': 121 numeric = 1; 122 break; 123 124 case 'S': 125 if (!bt_aton(optarg, &src)) { 126 if ((he = bt_gethostbyname(optarg)) == NULL) 127 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 128 129 memcpy(&src, he->h_addr, sizeof(src)); 130 } 131 break; 132 133 case 's': 134 echo_size = strtol(optarg, &endp, 10); 135 if (echo_size < sizeof(int32_t) || 136 echo_size > NG_L2CAP_MAX_ECHO_SIZE || 137 *endp != '\0') 138 usage(); 139 break; 140 141 case 'h': 142 default: 143 usage(); 144 break; 145 } 146 } 147 148 if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0) 149 usage(); 150 151 he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH); 152 if (he == NULL || he->h_name == NULL || he->h_name[0] == '\0' || numeric) 153 asprintf(&rname, "%s", bt_ntoa(&dst, NULL)); 154 else 155 rname = strdup(he->h_name); 156 157 if (rname == NULL) 158 errx(1, "Failed to create remote hostname"); 159 160 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP); 161 if (s < 0) 162 err(2, "Could not create socket"); 163 164 memset(&sa, 0, sizeof(sa)); 165 sa.l2cap_len = sizeof(sa); 166 sa.l2cap_family = AF_BLUETOOTH; 167 memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr)); 168 169 if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 170 err(3, 171 "Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 172 173 memset(&sa, 0, sizeof(sa)); 174 sa.l2cap_len = sizeof(sa); 175 sa.l2cap_family = AF_BLUETOOTH; 176 memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr)); 177 178 if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 179 err(4, 180 "Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 181 182 /* Fill pattern */ 183 for (n = 0; n < echo_size; ) { 184 int32_t avail = min(echo_size - n, PATTERN_SIZE); 185 186 memcpy(echo_data + n, pattern, avail); 187 n += avail; 188 } 189 190 /* Start ping'ing */ 191 for (n = 0; count == -1 || count > 0; n ++) { 192 struct ng_btsocket_l2cap_raw_ping r; 193 struct timeval a, b; 194 int32_t fail; 195 196 if (gettimeofday(&a, NULL) < 0) 197 err(5, "Could not gettimeofday(a)"); 198 199 fail = 0; 200 *((int32_t *) echo_data) = htonl(n); 201 202 r.result = 0; 203 r.echo_size = echo_size; 204 r.echo_data = echo_data; 205 if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) { 206 r.result = errno; 207 fail = 1; 208 /* 209 warn("Could not ping, dst bdaddr=%s", 210 bt_ntoa(&r.echo_dst, NULL)); 211 */ 212 } 213 214 if (gettimeofday(&b, NULL) < 0) 215 err(7, "Could not gettimeofday(b)"); 216 217 tv_sub(&b, &a); 218 219 fprintf(stdout, 220 "%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n", 221 r.echo_size, 222 rname, 223 ntohl(*((int32_t *)(r.echo_data))), 224 tv2msec(&b), r.result, 225 ((fail == 0)? "" : strerror(errno))); 226 227 if (!flood) { 228 /* Wait */ 229 a.tv_sec = wait; 230 a.tv_usec = 0; 231 select(0, NULL, NULL, NULL, &a); 232 } 233 234 if (count != -1) 235 count --; 236 } 237 238 free(rname); 239 free(echo_data); 240 close(s); 241 242 return (0); 243 } /* main */ 244 245 /* 246 * a -= b, for timevals 247 */ 248 249 static void 250 tv_sub(struct timeval *a, struct timeval const *b) 251 { 252 if (a->tv_usec < b->tv_usec) { 253 a->tv_usec += 1000000; 254 a->tv_sec -= 1; 255 } 256 257 a->tv_usec -= b->tv_usec; 258 a->tv_sec -= b->tv_sec; 259 } /* tv_sub */ 260 261 /* 262 * convert tv to msec 263 */ 264 265 static double 266 tv2msec(struct timeval const *tvp) 267 { 268 return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0); 269 } /* tv2msec */ 270 271 /* 272 * Usage 273 */ 274 275 static void 276 usage(void) 277 { 278 fprintf(stderr, "Usage: l2ping [-fhn] -a remote " \ 279 "[-c count] [-i wait] [-S source] [-s size]\n"); 280 fprintf(stderr, "Where:\n"); 281 fprintf(stderr, " -a remote Specify remote device to ping\n"); 282 fprintf(stderr, " -c count Number of packets to send\n"); 283 fprintf(stderr, " -f No delay between packets\n"); 284 fprintf(stderr, " -h Display this message\n"); 285 fprintf(stderr, " -i wait Delay between packets (sec)\n"); 286 fprintf(stderr, " -n Numeric output only\n"); 287 fprintf(stderr, " -S source Specify source device\n"); 288 fprintf(stderr, " -s size Packet size (bytes), " \ 289 "between %zd and %zd\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE); 290 291 exit(255); 292 } /* usage */ 293 294