l2ping.c revision 125943
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 125943 2004-02-17 18:37:12Z 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; 67 68 /* Set defaults */ 69 memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src)); 70 memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)); 71 72 echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t)); 73 if (echo_data == NULL) { 74 fprintf(stderr, "Failed to allocate echo data buffer"); 75 exit(1); 76 } 77 78 /* 79 * Set default echo size to the NG_L2CAP_MTU_MINIMUM minus 80 * the size of the L2CAP signalling command header. 81 */ 82 83 echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t); 84 count = -1; /* unimited */ 85 wait = 1; /* sec */ 86 flood = 0; 87 88 /* Parse command line arguments */ 89 while ((n = getopt(argc, argv, "a:c:fi:n:s:S:h")) != -1) { 90 switch (n) { 91 case 'a': 92 if (!bt_aton(optarg, &dst)) { 93 if ((he = bt_gethostbyname(optarg)) == NULL) 94 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 95 96 memcpy(&dst, he->h_addr, sizeof(dst)); 97 } 98 break; 99 100 case 'S': 101 if (!bt_aton(optarg, &src)) { 102 if ((he = bt_gethostbyname(optarg)) == NULL) 103 errx(1, "%s: %s", optarg, hstrerror(h_errno)); 104 105 memcpy(&src, he->h_addr, sizeof(src)); 106 } 107 break; 108 109 case 'c': 110 count = atoi(optarg); 111 if (count <= 0) 112 usage(); 113 break; 114 115 case 'f': 116 flood = 1; 117 break; 118 119 case 'i': 120 wait = atoi(optarg); 121 if (wait <= 0) 122 usage(); 123 break; 124 125 case 's': 126 echo_size = atoi(optarg); 127 if (echo_size < sizeof(int32_t)) 128 usage(); 129 130 if (echo_size > NG_L2CAP_MAX_ECHO_SIZE) 131 echo_size = NG_L2CAP_MAX_ECHO_SIZE; 132 break; 133 134 case 'h': 135 default: 136 usage(); 137 break; 138 } 139 } 140 141 if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0) 142 usage(); 143 144 s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP); 145 if (s < 0) 146 err(2, "Could not create socket"); 147 148 memset(&sa, 0, sizeof(sa)); 149 sa.l2cap_len = sizeof(sa); 150 sa.l2cap_family = AF_BLUETOOTH; 151 memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr)); 152 153 if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 154 err(3, 155"Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 156 157 memset(&sa, 0, sizeof(sa)); 158 sa.l2cap_len = sizeof(sa); 159 sa.l2cap_family = AF_BLUETOOTH; 160 memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr)); 161 162 if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) 163 err(4, 164"Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL)); 165 166 /* Fill pattern */ 167 for (n = 0; n < echo_size; ) { 168 int32_t avail = min(echo_size - n, PATTERN_SIZE); 169 170 memcpy(echo_data + n, pattern, avail); 171 n += avail; 172 } 173 174 /* Start ping'ing */ 175 for (n = 0; count == -1 || count > 0; n ++) { 176 struct ng_btsocket_l2cap_raw_ping r; 177 struct timeval a, b; 178 int32_t fail; 179 180 if (gettimeofday(&a, NULL) < 0) 181 err(5, "Could not gettimeofday(a)"); 182 183 fail = 0; 184 *((int32_t *) echo_data) = htonl(n); 185 186 r.result = 0; 187 r.echo_size = echo_size; 188 r.echo_data = echo_data; 189 if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) { 190 r.result = errno; 191 fail = 1; 192/* 193 warn("Could not ping, dst bdaddr=%s", 194 bt_ntoa(&r.echo_dst, NULL)); 195*/ 196 } 197 198 if (gettimeofday(&b, NULL) < 0) 199 err(7, "Could not gettimeofday(b)"); 200 201 tv_sub(&b, &a); 202 203 fprintf(stdout, 204"%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n", 205 r.echo_size, 206 bt_ntoa(&dst, NULL), 207 ntohl(*((int32_t *)(r.echo_data))), 208 tv2msec(&b), r.result, 209 ((fail == 0)? "" : strerror(errno))); 210 211 if (!flood) { 212 /* Wait */ 213 a.tv_sec = wait; 214 a.tv_usec = 0; 215 select(0, NULL, NULL, NULL, &a); 216 } 217 218 if (count != -1) 219 count --; 220 } 221 222 free(echo_data); 223 close(s); 224 225 return (0); 226} /* main */ 227 228/* 229 * a -= b, for timevals 230 */ 231 232static void 233tv_sub(struct timeval *a, struct timeval const *b) 234{ 235 if (a->tv_usec < b->tv_usec) { 236 a->tv_usec += 1000000; 237 a->tv_sec -= 1; 238 } 239 240 a->tv_usec -= b->tv_usec; 241 a->tv_sec -= b->tv_sec; 242} /* tv_sub */ 243 244/* 245 * convert tv to msec 246 */ 247 248static double 249tv2msec(struct timeval const *tvp) 250{ 251 return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0); 252} /* tv2msec */ 253 254/* 255 * Usage 256 */ 257 258static void 259usage(void) 260{ 261 fprintf(stderr, "Usage: l2ping -a bd_addr " \ 262 "[-S bd_addr -c count -i wait -s size -h]\n"); 263 fprintf(stderr, "Where:\n"); 264 fprintf(stderr, "\t-S bd_addr - Source BD_ADDR\n"); 265 fprintf(stderr, "\t-a bd_addr - Remote BD_ADDR to ping\n"); 266 fprintf(stderr, "\t-c count - Number of packets to send\n"); 267 fprintf(stderr, "\t-f - No delay (soft of flood)\n"); 268 fprintf(stderr, "\t-i wait - Delay between packets (sec)\n"); 269 fprintf(stderr, "\t-s size - Packet size (bytes), " \ 270 "between %d and %d\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE); 271 fprintf(stderr, "\t-h - Display this message\n"); 272 273 exit(255); 274} /* usage */ 275 276