301 lines
6.5 KiB
C
301 lines
6.5 KiB
C
/* $NetBSD: btkey.c,v 1.4 2011/08/29 14:24:03 joerg Exp $ */
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/*-
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* Copyright (c) 2007 Iain Hibbert
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2007 Iain Hibbert. All rights reserved.");
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__RCSID("$NetBSD: btkey.c,v 1.4 2011/08/29 14:24:03 joerg Exp $");
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#include <bluetooth.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <stdbool.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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#include "btkey.h"
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__dead static void usage(void);
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static bool scan_key(const char *);
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bdaddr_t laddr;
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bdaddr_t raddr;
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uint8_t key[HCI_KEY_SIZE];
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int
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main(int ac, char *av[])
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{
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struct hostent *he;
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int ch;
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bool cf, cd, lf, ld, rf, rd, wf, wd, nk;
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memset(&laddr, 0, sizeof(laddr));
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memset(&raddr, 0, sizeof(raddr));
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memset(key, 0, sizeof(key));
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cf = cd = lf = ld = rf = rd = wf = wd = nk = false;
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while ((ch = getopt(ac, av, "a:cCd:k:lLrRwW")) != EOF) {
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switch (ch) {
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case 'a': /* remote device address */
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if (!bt_aton(optarg, &raddr)) {
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he = bt_gethostbyname(optarg);
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if (he == NULL)
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errx(EXIT_FAILURE, "%s: %s",
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optarg, hstrerror(h_errno));
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bdaddr_copy(&raddr, (bdaddr_t *)he->h_addr);
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}
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break;
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case 'c': /* clear from file */
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cf = true;
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break;
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case 'C': /* clear from device */
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cd = true;
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break;
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case 'd': /* local device address */
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if (!bt_devaddr(optarg, &laddr)
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&& !bt_aton(optarg, &laddr)) {
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he = bt_gethostbyname(optarg);
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if (he == NULL)
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errx(EXIT_FAILURE, "%s: %s",
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optarg, hstrerror(h_errno));
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bdaddr_copy(&laddr, (bdaddr_t *)he->h_addr);
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}
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break;
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case 'k': /* new link key */
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if (!scan_key(optarg))
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errx(EXIT_FAILURE, "invalid key '%s'", optarg);
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nk = true;
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break;
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case 'l': /* list from file */
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lf = true;
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break;
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case 'L': /* list from device */
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ld = true;
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break;
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case 'r': /* read from file */
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rf = true;
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break;
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case 'R': /* read from device */
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rd = true;
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break;
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case 'w': /* write to file */
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wf = true;
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break;
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case 'W': /* write to device */
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wd = true;
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break;
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default:
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usage();
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}
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}
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ac -= optind;
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av += optind;
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/*
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* validate options
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*/
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if ((lf || ld) && (rf || rd || wf || wd || cf || cd || nk))
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errx(EXIT_FAILURE, "list is exclusive of other options");
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if (((rf && rd) || (rf && nk) || (rd && nk)) && (wf || wd))
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errx(EXIT_FAILURE, "too many key sources");
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if (((bdaddr_any(&laddr) || bdaddr_any(&raddr)) && !(lf || ld))
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|| ((lf || ld) && (bdaddr_any(&laddr) || !bdaddr_any(&raddr)))
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|| ac > 0)
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usage();
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/*
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* do what we gotta do and be done
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*/
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if (!bdaddr_any(&laddr))
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print_addr("device", &laddr);
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if (!bdaddr_any(&raddr))
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print_addr("bdaddr", &raddr);
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if (lf && !list_file())
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err(EXIT_FAILURE, "list file");
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if (ld && !list_device())
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err(EXIT_FAILURE, "list device");
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if (nk)
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print_key("new key", key);
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if (rf) {
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if (!read_file())
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err(EXIT_FAILURE, "file key");
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print_key("file key", key);
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}
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if (rd) {
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if (!read_device())
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err(EXIT_FAILURE, "device key");
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print_key("device key", key);
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}
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if (wf || wd || cf || cd)
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printf("\n");
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if (wf) {
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if (!write_file())
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err(EXIT_FAILURE, "write to file");
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printf("written to file\n");
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}
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if (wd) {
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if (!write_device())
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err(EXIT_FAILURE, "write to device");
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printf("written to device\n");
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}
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if (cf) {
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if (!clear_file())
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err(EXIT_FAILURE, "clear from file");
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printf("cleared from file\n");
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}
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if (cd) {
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if (!clear_device())
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err(EXIT_FAILURE, "clear from device");
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printf("cleared from device\n");
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}
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exit(EXIT_SUCCESS);
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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,
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"Usage: %s [-cCrRwW] [-k key] -a address -d device\n"
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" %s -lL -d device\n"
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"\n", getprogname(), getprogname());
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fprintf(stderr,
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"Where:\n"
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"\t-a address remote device address\n"
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"\t-c clear from file\n"
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"\t-C clear from device\n"
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"\t-d device local device address\n"
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"\t-k key user specified link_key\n"
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"\t-l list file keys\n"
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"\t-L list device keys\n"
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"\t-r read from file\n"
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"\t-R read from device\n"
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"\t-w write to file\n"
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"\t-W write to device\n"
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"\n");
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exit(EXIT_FAILURE);
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}
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static bool
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scan_key(const char *arg)
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{
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static const char digits[] = "0123456789abcdef";
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const char *p;
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int i, j;
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memset(key, 0, sizeof(key));
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for (i = 0 ; i < HCI_KEY_SIZE ; i++) {
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for (j = 0 ; j < 2 ; j++) {
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if (*arg == '\0')
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return true;
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for (p = digits ; *p != tolower((int)*arg) ; p++)
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if (*p == '\0')
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return false;
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arg++;
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key[i] = (key[i] << 4) + (p - digits);
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}
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}
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if (*arg != '\0')
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return false;
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return true;
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}
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void
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print_key(const char *type, const uint8_t *src)
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{
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int i;
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printf("%10s: ", type);
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for (i = 0 ; i < HCI_KEY_SIZE ; i++)
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printf("%2.2x", src[i]);
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printf("\n");
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}
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void
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print_addr(const char *type, const bdaddr_t *addr)
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{
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char name[HCI_DEVNAME_SIZE];
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struct hostent *he;
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printf("%10s: %s", type, bt_ntoa(addr, NULL));
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if (bt_devname(name, addr))
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printf(" (%s)", name);
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else if ((he = bt_gethostbyaddr((const char *)addr,
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sizeof(bdaddr_t), AF_BLUETOOTH)) != NULL)
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printf(" (%s)", he->h_name);
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printf("\n");
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}
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