usr.bin/btpin/btpin.c

   1 /* $NetBSD: btpin.c,v 1.3 2007/04/14 09:28:39 plunky Exp $ */
   2 /* $DragonFly: src/usr.bin/btpin/btpin.c,v 1.2 2008/07/10 18:29:51 swildner Exp $ */
   3
   4 /*-
   5  * Copyright (c) 2006 Itronix Inc.
   6  * All rights reserved.
   7  *
   8  * Written by Iain Hibbert for Itronix Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of Itronix Inc. may not be used to endorse
  19  *    or promote products derived from this software without specific
  20  *    prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
  26  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  29  * ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <sys/types.h>
  36 #include <sys/un.h>
  37 #include <bluetooth.h>
  38 #include <err.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <time.h>
  42 #include <unistd.h>
  43
  44 int  main(int, char *[]);
  45 void usage(void);
  46
  47 int
  48 main(int ac, char *av[])
  49 {
  50         bthcid_pin_response_t rp;
  51         struct sockaddr_un un;
  52         char *pin = NULL;
  53         int ch, s, len;
  54
  55         memset(&rp, 0, sizeof(rp));
  56         len = -1;
  57
  58         memset(&un, 0, sizeof(un));
  59         un.sun_len = sizeof(un);
  60         un.sun_family = AF_LOCAL;
  61         strlcpy(un.sun_path, BTHCID_SOCKET_NAME, sizeof(un.sun_path));
  62
  63         while ((ch = getopt(ac, av, "a:d:l:p:rs:")) != -1) {
  64                 switch (ch) {
  65                 case 'a':
  66                         if (!bt_aton(optarg, &rp.raddr)) {
  67                                 struct hostent  *he = NULL;
  68
  69                                 if ((he = bt_gethostbyname(optarg)) == NULL)
  70                                         errx(EXIT_FAILURE, "%s: %s", optarg,
  71                                                         hstrerror(h_errno));
  72
  73                                 bdaddr_copy(&rp.raddr, (bdaddr_t *)he->h_addr);
  74                         }
  75                         break;
  76
  77                 case 'd':
  78                         if (!bt_devaddr(optarg, &rp.laddr))
  79                                 err(EXIT_FAILURE, "%s", optarg);
  80
  81                         break;
  82
  83                 case 'l':
  84                         len = atoi(optarg);
  85                         if (len < 1 || len > HCI_PIN_SIZE)
  86                                 errx(EXIT_FAILURE, "Invalid PIN length");
  87
  88                         break;
  89
  90                 case 'p':
  91                         pin = optarg;
  92                         break;
  93
  94                 case 'r':
  95                         if (len == -1)
  96                                 len = 4;
  97
  98                         break;
  99
 100                 case 's':
 101                         strlcpy(un.sun_path, optarg, sizeof(un.sun_path));
 102                         break;
 103
 104                 default:
 105                         usage();
 106                 }
 107         }
 108
 109         if (bdaddr_any(&rp.raddr))
 110                 usage();
 111
 112         if (pin == NULL) {
 113                 if (len == -1)
 114                         usage();
 115
 116                 srandom(time(NULL));
 117
 118                 pin = (char *)rp.pin;
 119                 while (len-- > 0)
 120                         *pin++ = '0' + (random() % 10);
 121
 122                 printf("PIN: %.*s\n", HCI_PIN_SIZE, rp.pin);
 123         } else {
 124                 if (len != -1)
 125                         usage();
 126
 127                 strncpy((char *)rp.pin, pin, HCI_PIN_SIZE);
 128         }
 129
 130         s = socket(PF_LOCAL, SOCK_STREAM, 0);
 131         if (s < 0)
 132                 err(EXIT_FAILURE, "socket");
 133
 134         if (connect(s, (struct sockaddr *)&un, sizeof(un)) < 0)
 135                 err(EXIT_FAILURE, "connect(\"%s\")", un.sun_path);
 136
 137         if (send(s, &rp, sizeof(rp), 0) != sizeof(rp))
 138                 err(EXIT_FAILURE, "send");
 139
 140         close(s);
 141         exit(EXIT_SUCCESS);
 142 }
 143
 144 void
 145 usage(void)
 146 {
 147
 148         fprintf(stderr,
 149                 "usage: %s [-d device] [-s socket] {-p pin | -r [-l len]} -a addr\n"
 150                 "", getprogname());
 151
 152         exit(EXIT_FAILURE);
 153 }