295 lines
7.2 KiB
C
295 lines
7.2 KiB
C
/*-
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* l2ping.c
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: l2ping.c,v 1.5 2003/05/16 19:54:40 max Exp $
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*/
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <assert.h>
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#define L2CAP_SOCKET_CHECKED
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#include <bluetooth.h>
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#include <err.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static void usage (void);
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static void tv_sub (struct timeval *, struct timeval const *);
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static double tv2msec (struct timeval const *);
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#undef min
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#define min(x, y) (((x) > (y))? (y) : (x))
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static char const pattern[] = "1234567890-";
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#define PATTERN_SIZE (sizeof(pattern) - 1)
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/*
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* Main
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*/
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int
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main(int argc, char *argv[])
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{
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bdaddr_t src, dst;
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struct hostent *he;
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uint8_t *echo_data;
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struct sockaddr_l2cap sa;
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int32_t n, s, count, wait, flood, echo_size, numeric;
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char *endp, *rname;
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/* Set defaults */
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memcpy(&src, NG_HCI_BDADDR_ANY, sizeof(src));
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memcpy(&dst, NG_HCI_BDADDR_ANY, sizeof(dst));
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echo_data = (uint8_t *) calloc(NG_L2CAP_MAX_ECHO_SIZE, sizeof(uint8_t));
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if (echo_data == NULL) {
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fprintf(stderr, "Failed to allocate echo data buffer");
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exit(1);
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}
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/*
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* Set default echo size to the NG_L2CAP_MTU_MINIMUM minus
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* the size of the L2CAP signalling command header.
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*/
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echo_size = NG_L2CAP_MTU_MINIMUM - sizeof(ng_l2cap_cmd_hdr_t);
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count = -1; /* unimited */
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wait = 1; /* sec */
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flood = 0;
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numeric = 0;
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/* Parse command line arguments */
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while ((n = getopt(argc, argv, "a:c:fi:nS:s:h")) != -1) {
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switch (n) {
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case 'a':
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if (!bt_aton(optarg, &dst)) {
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if ((he = bt_gethostbyname(optarg)) == NULL)
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errx(1, "%s: %s", optarg, hstrerror(h_errno));
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memcpy(&dst, he->h_addr, sizeof(dst));
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}
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break;
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case 'c':
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count = strtol(optarg, &endp, 10);
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if (count <= 0 || *endp != '\0')
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usage();
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break;
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case 'f':
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flood = 1;
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break;
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case 'i':
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wait = strtol(optarg, &endp, 10);
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if (wait <= 0 || *endp != '\0')
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usage();
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break;
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case 'n':
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numeric = 1;
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break;
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case 'S':
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if (!bt_aton(optarg, &src)) {
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if ((he = bt_gethostbyname(optarg)) == NULL)
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errx(1, "%s: %s", optarg, hstrerror(h_errno));
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memcpy(&src, he->h_addr, sizeof(src));
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}
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break;
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case 's':
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echo_size = strtol(optarg, &endp, 10);
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if (echo_size < sizeof(int32_t) ||
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echo_size > NG_L2CAP_MAX_ECHO_SIZE ||
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*endp != '\0')
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usage();
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break;
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case 'h':
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default:
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usage();
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break;
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}
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}
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if (memcmp(&dst, NG_HCI_BDADDR_ANY, sizeof(dst)) == 0)
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usage();
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he = bt_gethostbyaddr((const char *)&dst, sizeof(dst), AF_BLUETOOTH);
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if (he == NULL || he->h_name == NULL || he->h_name[0] == '\0' || numeric)
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asprintf(&rname, "%s", bt_ntoa(&dst, NULL));
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else
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rname = strdup(he->h_name);
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if (rname == NULL)
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errx(1, "Failed to create remote hostname");
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s = socket(PF_BLUETOOTH, SOCK_RAW, BLUETOOTH_PROTO_L2CAP);
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if (s < 0)
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err(2, "Could not create socket");
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memset(&sa, 0, sizeof(sa));
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sa.l2cap_len = sizeof(sa);
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sa.l2cap_family = AF_BLUETOOTH;
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memcpy(&sa.l2cap_bdaddr, &src, sizeof(sa.l2cap_bdaddr));
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if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
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err(3,
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"Could not bind socket, src bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));
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memset(&sa, 0, sizeof(sa));
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sa.l2cap_len = sizeof(sa);
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sa.l2cap_family = AF_BLUETOOTH;
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memcpy(&sa.l2cap_bdaddr, &dst, sizeof(sa.l2cap_bdaddr));
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if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
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err(4,
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"Could not connect socket, dst bdaddr=%s", bt_ntoa(&sa.l2cap_bdaddr, NULL));
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/* Fill pattern */
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for (n = 0; n < echo_size; ) {
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int32_t avail = min(echo_size - n, PATTERN_SIZE);
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memcpy(echo_data + n, pattern, avail);
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n += avail;
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}
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/* Start ping'ing */
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for (n = 0; count == -1 || count > 0; n ++) {
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struct ng_btsocket_l2cap_raw_ping r;
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struct timeval a, b;
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int32_t fail;
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if (gettimeofday(&a, NULL) < 0)
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err(5, "Could not gettimeofday(a)");
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fail = 0;
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*((int32_t *) echo_data) = htonl(n);
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r.result = 0;
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r.echo_size = echo_size;
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r.echo_data = echo_data;
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if (ioctl(s, SIOC_L2CAP_L2CA_PING, &r, sizeof(r)) < 0) {
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r.result = errno;
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fail = 1;
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/*
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warn("Could not ping, dst bdaddr=%s",
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bt_ntoa(&r.echo_dst, NULL));
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*/
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}
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if (gettimeofday(&b, NULL) < 0)
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err(7, "Could not gettimeofday(b)");
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tv_sub(&b, &a);
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fprintf(stdout,
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"%d bytes from %s seq_no=%d time=%.3f ms result=%#x %s\n",
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r.echo_size,
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rname,
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ntohl(*((int32_t *)(r.echo_data))),
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tv2msec(&b), r.result,
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((fail == 0)? "" : strerror(errno)));
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if (!flood) {
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/* Wait */
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a.tv_sec = wait;
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a.tv_usec = 0;
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select(0, NULL, NULL, NULL, &a);
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}
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if (count != -1)
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count --;
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}
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free(rname);
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free(echo_data);
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close(s);
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return (0);
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} /* main */
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/*
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* a -= b, for timevals
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*/
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static void
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tv_sub(struct timeval *a, struct timeval const *b)
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{
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if (a->tv_usec < b->tv_usec) {
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a->tv_usec += 1000000;
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a->tv_sec -= 1;
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}
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a->tv_usec -= b->tv_usec;
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a->tv_sec -= b->tv_sec;
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} /* tv_sub */
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/*
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* convert tv to msec
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*/
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static double
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tv2msec(struct timeval const *tvp)
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{
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return(((double)tvp->tv_usec)/1000.0 + ((double)tvp->tv_sec)*1000.0);
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} /* tv2msec */
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/*
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* Usage
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*/
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static void
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usage(void)
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{
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fprintf(stderr, "Usage: l2ping [-fhn] -a remote " \
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"[-c count] [-i wait] [-S source] [-s size]\n");
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fprintf(stderr, "Where:\n");
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fprintf(stderr, " -a remote Specify remote device to ping\n");
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fprintf(stderr, " -c count Number of packets to send\n");
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fprintf(stderr, " -f No delay between packets\n");
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fprintf(stderr, " -h Display this message\n");
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fprintf(stderr, " -i wait Delay between packets (sec)\n");
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fprintf(stderr, " -n Numeric output only\n");
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fprintf(stderr, " -S source Specify source device\n");
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fprintf(stderr, " -s size Packet size (bytes), " \
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"between %zd and %zd\n", sizeof(int32_t), NG_L2CAP_MAX_ECHO_SIZE);
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exit(255);
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} /* usage */
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