l2ping.c revision 133140
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: head/usr.sbin/bluetooth/l2ping/l2ping.c 133140 2004-08-04 20:43:57Z emax $ 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 <stdio.h> 41#include <stdlib.h> 42#include <string.h> 43#include <unistd.h> 44 45static void usage (void); 46static void tv_sub (struct timeval *, struct timeval const *); 47static double tv2msec (struct timeval const *); 48 49#undef min 50#define min(x, y) (((x) > (y))? (y) : (x)) 51 52static char const pattern[] = "1234567890-"; 53#define PATTERN_SIZE (sizeof(pattern) - 1) 54 55/* 56 * Main 57 */ 58 59int 60main(int argc, char *argv[]) 61{ 62 bdaddr_t src, dst; 63 struct hostent *he = NULL; 64 uint8_t *echo_data = NULL; 65 struct sockaddr_l2cap sa; 66 int32_t n, s, count, wait, flood, echo_size, numeric; 67 char *rname = NULL; 68 69 /* Set defaults */ 70 memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src)); 71 memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)); 72 73 echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t)); 74 if (echo_data == NULL) { 75 fprintf(stderr, "Failed to allocate echo data buffer"); 76 exit(1); 77 } 78 79 /* 80 * Set default echo size to the NG_L2CAP_MTU_MINIMUM minus 81 * the size of the L2CAP signalling command header. 82 */ 83 84 echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t); 85 count = -1; /* unimited */ 86 wait = 1; /* sec */ 87 flood = 0; 88 numeric = 0; 89 90 /* Parse command line arguments */ 91 while ((n = getopt(argc, argv, "a:c:fi:nS:s:h")) != -1) { 92 switch (n) { 93 case 'a': 94 if (!bt_aton(optarg, &dst)) { 95 if ((he = bt_gethostbyname(optarg)) == NULL) 96 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 97 98 memcpy(&dst, he->h_addr, sizeof(dst)); 99 } 100 break; 101 102 case 'c': 103 count = atoi(optarg); 104 if (count <= 0) 105 usage(); 106 break; 107 108 case 'f': 109 flood = 1; 110 break; 111 112 case 'i': 113 wait = atoi(optarg); 114 if (wait <= 0) 115 usage(); 116 break; 117 118 case 'n': 119 numeric = 1; 120 break; 121 122 case 'S': 123 if (!bt_aton(optarg, &src)) { 124 if ((he = bt_gethostbyname(optarg)) == NULL) 125 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 126 127 memcpy(&src, he->h_addr, sizeof(src)); 128 } 129 break; 130 131 case 's': 132 echo_size = atoi(optarg); 133 if (echo_size < sizeof(int32_t) || 134 echo_size > NG_L2CAP_MAX_ECHO_SIZE) 135 usage(); 136 break; 137 138 case 'h': 139 default: 140 usage(); 141 break; 142 } 143 } 144 145 if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0) 146 usage(); 147 148 he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH); 149 if (he == NULL || he->h_name == NULL || he->h_name[0] == '\0' || numeric) 150 asprintf(&rname, "%s", bt_ntoa(&dst, NULL)); 151 else 152 rname = strdup(he->h_name); 153 154 if (rname == NULL) 155 errx(1, "Failed to create remote hostname"); 156 157 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP); 158 if (s < 0) 159 err(2, "Could not create socket"); 160 161 memset(&sa, 0, sizeof(sa)); 162 sa.l2cap_len = sizeof(sa); 163 sa.l2cap_family = AF_BLUETOOTH; 164 memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr)); 165 166 if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 167 err(3, 168"Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 169 170 memset(&sa, 0, sizeof(sa)); 171 sa.l2cap_len = sizeof(sa); 172 sa.l2cap_family = AF_BLUETOOTH; 173 memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr)); 174 175 if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 176 err(4, 177"Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 178 179 /* Fill pattern */ 180 for (n = 0; n < echo_size; ) { 181 int32_t avail = min(echo_size - n, PATTERN_SIZE); 182 183 memcpy(echo_data + n, pattern, avail); 184 n += avail; 185 } 186 187 /* Start ping'ing */ 188 for (n = 0; count == -1 || count > 0; n ++) { 189 struct ng_btsocket_l2cap_raw_ping r; 190 struct timeval a, b; 191 int32_t fail; 192 193 if (gettimeofday(&a, NULL) < 0) 194 err(5, "Could not gettimeofday(a)"); 195 196 fail = 0; 197 *((int32_t *) echo_data) = htonl(n); 198 199 r.result = 0; 200 r.echo_size = echo_size; 201 r.echo_data = echo_data; 202 if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) { 203 r.result = errno; 204 fail = 1; 205/* 206 warn("Could not ping, dst bdaddr=%s", 207 bt_ntoa(&r.echo_dst, NULL)); 208*/ 209 } 210 211 if (gettimeofday(&b, NULL) < 0) 212 err(7, "Could not gettimeofday(b)"); 213 214 tv_sub(&b, &a); 215 216 fprintf(stdout, 217"%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n", 218 r.echo_size, 219 rname, 220 ntohl(*((int32_t *)(r.echo_data))), 221 tv2msec(&b), r.result, 222 ((fail == 0)? "" : strerror(errno))); 223 224 if (!flood) { 225 /* Wait */ 226 a.tv_sec = wait; 227 a.tv_usec = 0; 228 select(0, NULL, NULL, NULL, &a); 229 } 230 231 if (count != -1) 232 count --; 233 } 234 235 free(rname); 236 free(echo_data); 237 close(s); 238 239 return (0); 240} /* main */ 241 242/* 243 * a -= b, for timevals 244 */ 245 246static void 247tv_sub(struct timeval *a, struct timeval const *b) 248{ 249 if (a->tv_usec < b->tv_usec) { 250 a->tv_usec += 1000000; 251 a->tv_sec -= 1; 252 } 253 254 a->tv_usec -= b->tv_usec; 255 a->tv_sec -= b->tv_sec; 256} /* tv_sub */ 257 258/* 259 * convert tv to msec 260 */ 261 262static double 263tv2msec(struct timeval const *tvp) 264{ 265 return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0); 266} /* tv2msec */ 267 268/* 269 * Usage 270 */ 271 272static void 273usage(void) 274{ 275 fprintf(stderr, "Usage: l2ping -a bd_addr " \ 276 "[-S bd_addr -c count -i wait -n -s size -h]\n"); 277 fprintf(stderr, "Where:\n"); 278 fprintf(stderr, " -a remote Specify remote device to ping\n"); 279 fprintf(stderr, " -c count Number of packets to send\n"); 280 fprintf(stderr, " -f No delay (soft of flood)\n"); 281 fprintf(stderr, " -h Display this message\n"); 282 fprintf(stderr, " -i wait Delay between packets (sec)\n"); 283 fprintf(stderr, " -n Numeric output only\n"); 284 fprintf(stderr, " -S source Specify source device\n"); 285 fprintf(stderr, " -s size Packet size (bytes), " \ 286 "between %zd and %zd\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE); 287 288 exit(255); 289} /* usage */ 290 291