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 <event.h>
  37 #include <fcntl.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <syslog.h>
  41 #include <unistd.h>
  42
  43 #include "bthcid.h"
  44
  45 static const char *key_file = "/var/db/bthcid.keys";
  46 static const char *new_key_file = "/var/db/bthcid.keys.new";
  47
  48 /*
  49  * Look up key in keys file. We store a dictionary for each
  50  * remote address, and inside that we have a data object for
  51  * each local address containing the key.
  52  */
  53 uint8_t *
  54 lookup_key(bdaddr_t *laddr, bdaddr_t *raddr)
  55 {
  56         link_key_p      key = NULL;
  57
  58         syslog(LOG_DEBUG, "Got Link_Key_Request event from '%s', " \
  59                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
  60                         bt_ntoa(raddr, NULL));
  61
  62         if ((key = get_key(raddr, 0)) != NULL) {
  63                 syslog(LOG_DEBUG, "Found matching entry, " \
  64                                 "remote bdaddr %s, name '%s', link key %s",
  65                                 bt_ntoa(&key->bdaddr, NULL),
  66                                 (key->name != NULL)? key->name : "No name",
  67                                 (key->key != NULL)? "exists" : "doesn't exist");
  68                 return key->key;
  69         }
  70
  71         syslog(LOG_DEBUG, "Could not find link key for remote bdaddr %s",
  72                         bt_ntoa(raddr, NULL));
  73         return NULL;
  74 }
  75
  76 /*
  77  * Look up pin in keys file. We store a dictionary for each
  78  * remote address, and inside that we have a data object for
  79  * each local address containing the pin.
  80  */
  81 uint8_t *
  82 lookup_pin_conf(bdaddr_t *laddr, bdaddr_t *raddr)
  83 {
  84         link_key_p      key = NULL;
  85
  86         syslog(LOG_DEBUG, "Got Link_Pin_Request event from '%s', " \
  87                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
  88                         bt_ntoa(raddr, NULL));
  89
  90         if ((key = get_key(raddr, 0)) != NULL) {
  91                 syslog(LOG_DEBUG, "Found matching entry, " \
  92                                 "remote bdaddr %s, name '%s', pin %s",
  93                                 bt_ntoa(&key->bdaddr, NULL),
  94                                 (key->name != NULL)? key->name : "No name",
  95                                 (key->pin != NULL)? "exists" : "doesn't exist");
  96                 return key->pin;
  97         }
  98
  99         syslog(LOG_DEBUG, "Could not find link key for remote bdaddr %s",
 100                         bt_ntoa(raddr, NULL));
 101         return NULL;
 102 }
 103
 104
 105 void
 106 save_key(bdaddr_t *laddr, bdaddr_t *raddr, uint8_t * key)
 107 {
 108         link_key_p      lkey = NULL;
 109
 110         syslog(LOG_DEBUG, "Got Link_Key_Notification event from '%s', " \
 111                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
 112                         bt_ntoa(raddr, NULL));
 113
 114         if ((lkey = get_key(raddr, 1)) == NULL) {
 115                 syslog(LOG_ERR, "Could not find entry for remote bdaddr %s",
 116                                 bt_ntoa(raddr, NULL));
 117                 return;
 118         }
 119
 120         syslog(LOG_DEBUG, "Updating link key for the entry, " \
 121                         "remote bdaddr %s, name '%s', link key %s",
 122                         bt_ntoa(&lkey->bdaddr, NULL),
 123                         (lkey->name != NULL)? lkey->name : "No name",
 124                         (lkey->key != NULL)? "exists" : "doesn't exist");
 125
 126         if (lkey->key == NULL) {
 127                 lkey->key = (uint8_t *) malloc(HCI_KEY_SIZE);
 128                 if (lkey->key == NULL) {
 129                         syslog(LOG_ERR, "Could not allocate link key");
 130                         exit(1);
 131                 }
 132         }
 133
 134         memcpy(lkey->key, key, HCI_KEY_SIZE);
 135
 136         dump_keys_file();
 137         read_config_file();
 138         read_keys_file();
 139
 140         return;
 141 }
 142