usr.sbin/bthcid/config.c

   1 /* $NetBSD: config.c,v 1.4 2007/01/25 20:33:41 plunky Exp $ */
   2 /* $DragonFly: src/usr.sbin/bthcid/config.c,v 1.1 2008/01/30 14:10:19 hasso Exp $ */
   3
   4 /*-
   5  * Copyright (c) 2006 Itronix Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of Itronix Inc. may not be used to endorse
  17  *    or promote products derived from this software without specific
  18  *    prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
  24  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  27  * ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/time.h>
  34 #include <bluetooth.h>
  35 #include <errno.h>
  36 #include <fcntl.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <syslog.h>
  40 #include <unistd.h>
  41
  42 #include "bthcid.h"
  43
  44 #if 0
  45 static const char *key_file = "/var/db/bthcid.keys";
  46 static const char *new_key_file = "/var/db/bthcid.keys.new";
  47 #endif
  48
  49 /*
  50  * Look up key in keys file. We store a dictionary for each
  51  * remote address, and inside that we have a data object for
  52  * each local address containing the key.
  53  */
  54 uint8_t *
  55 lookup_key(bdaddr_t *laddr, bdaddr_t *raddr)
  56 {
  57         link_key_p      key = NULL;
  58
  59         syslog(LOG_DEBUG, "Got Link_Key_Request event from '%s', " \
  60                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
  61                         bt_ntoa(raddr, NULL));
  62
  63         if ((key = get_key(raddr, 0)) != NULL) {
  64                 syslog(LOG_DEBUG, "Found matching entry, " \
  65                                 "remote bdaddr %s, name '%s', link key %s",
  66                                 bt_ntoa(&key->bdaddr, NULL),
  67                                 (key->name != NULL)? key->name : "No name",
  68                                 (key->key != NULL)? "exists" : "doesn't exist");
  69                 return key->key;
  70         }
  71
  72         syslog(LOG_DEBUG, "Could not find link key for remote bdaddr %s",
  73                         bt_ntoa(raddr, NULL));
  74         return NULL;
  75 }
  76
  77 /*
  78  * Look up pin in keys file. We store a dictionary for each
  79  * remote address, and inside that we have a data object for
  80  * each local address containing the pin.
  81  */
  82 uint8_t *
  83 lookup_pin_conf(bdaddr_t *laddr, bdaddr_t *raddr)
  84 {
  85         link_key_p      key = NULL;
  86
  87         syslog(LOG_DEBUG, "Got Link_Pin_Request event from '%s', " \
  88                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
  89                         bt_ntoa(raddr, NULL));
  90
  91         if ((key = get_key(raddr, 0)) != NULL) {
  92                 syslog(LOG_DEBUG, "Found matching entry, " \
  93                                 "remote bdaddr %s, name '%s', pin %s",
  94                                 bt_ntoa(&key->bdaddr, NULL),
  95                                 (key->name != NULL)? key->name : "No name",
  96                                 (key->pin != NULL)? "exists" : "doesn't exist");
  97                 return key->pin;
  98         }
  99
 100         syslog(LOG_DEBUG, "Could not find link key for remote bdaddr %s",
 101                         bt_ntoa(raddr, NULL));
 102         return NULL;
 103 }
 104
 105
 106 void
 107 save_key(bdaddr_t *laddr, bdaddr_t *raddr, uint8_t * key)
 108 {
 109         link_key_p      lkey = NULL;
 110
 111         syslog(LOG_DEBUG, "Got Link_Key_Notification event from '%s', " \
 112                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
 113                         bt_ntoa(raddr, NULL));
 114
 115         if ((lkey = get_key(raddr, 1)) == NULL) {
 116                 syslog(LOG_ERR, "Could not find entry for remote bdaddr %s",
 117                                 bt_ntoa(raddr, NULL));
 118                 return;
 119         }
 120
 121         syslog(LOG_DEBUG, "Updating link key for the entry, " \
 122                         "remote bdaddr %s, name '%s', link key %s",
 123                         bt_ntoa(&lkey->bdaddr, NULL),
 124                         (lkey->name != NULL)? lkey->name : "No name",
 125                         (lkey->key != NULL)? "exists" : "doesn't exist");
 126
 127         if (lkey->key == NULL) {
 128                 lkey->key = (uint8_t *) malloc(HCI_KEY_SIZE);
 129                 if (lkey->key == NULL) {
 130                         syslog(LOG_ERR, "Could not allocate link key");
 131                         exit(1);
 132                 }
 133         }
 134
 135         memcpy(lkey->key, key, HCI_KEY_SIZE);
 136
 137         dump_keys_file();
 138         read_config_file();
 139         read_keys_file();
 140
 141         return;
 142 }
 143