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 #if 0
  46 static const char *key_file = "/var/db/bthcid.keys";
  47 static const char *new_key_file = "/var/db/bthcid.keys.new";
  48 #endif
  49
  50 /*
  51  * Look up key in keys file. We store a dictionary for each
  52  * remote address, and inside that we have a data object for
  53  * each local address containing the key.
  54  */
  55 uint8_t *
  56 lookup_key(bdaddr_t *laddr, bdaddr_t *raddr)
  57 {
  58         link_key_p      key = NULL;
  59
  60         syslog(LOG_DEBUG, "Got Link_Key_Request event from '%s', " \
  61                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
  62                         bt_ntoa(raddr, NULL));
  63
  64         if ((key = get_key(raddr, 0)) != NULL) {
  65                 syslog(LOG_DEBUG, "Found matching entry, " \
  66                                 "remote bdaddr %s, name '%s', link key %s",
  67                                 bt_ntoa(&key->bdaddr, NULL),
  68                                 (key->name != NULL)? key->name : "No name",
  69                                 (key->key != NULL)? "exists" : "doesn't exist");
  70                 return key->key;
  71         }
  72
  73         syslog(LOG_DEBUG, "Could not find link key for remote bdaddr %s",
  74                         bt_ntoa(raddr, NULL));
  75         return NULL;
  76 }
  77
  78 /*
  79  * Look up pin in keys file. We store a dictionary for each
  80  * remote address, and inside that we have a data object for
  81  * each local address containing the pin.
  82  */
  83 uint8_t *
  84 lookup_pin_conf(bdaddr_t *laddr, bdaddr_t *raddr)
  85 {
  86         link_key_p      key = NULL;
  87
  88         syslog(LOG_DEBUG, "Got Link_Pin_Request event from '%s', " \
  89                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
  90                         bt_ntoa(raddr, NULL));
  91
  92         if ((key = get_key(raddr, 0)) != NULL) {
  93                 syslog(LOG_DEBUG, "Found matching entry, " \
  94                                 "remote bdaddr %s, name '%s', pin %s",
  95                                 bt_ntoa(&key->bdaddr, NULL),
  96                                 (key->name != NULL)? key->name : "No name",
  97                                 (key->pin != NULL)? "exists" : "doesn't exist");
  98                 return key->pin;
  99         }
 100
 101         syslog(LOG_DEBUG, "Could not find link key for remote bdaddr %s",
 102                         bt_ntoa(raddr, NULL));
 103         return NULL;
 104 }
 105
 106
 107 void
 108 save_key(bdaddr_t *laddr, bdaddr_t *raddr, uint8_t * key)
 109 {
 110         link_key_p      lkey = NULL;
 111
 112         syslog(LOG_DEBUG, "Got Link_Key_Notification event from '%s', " \
 113                         "remote bdaddr %s", bt_ntoa(laddr, NULL),
 114                         bt_ntoa(raddr, NULL));
 115
 116         if ((lkey = get_key(raddr, 1)) == NULL) {
 117                 syslog(LOG_ERR, "Could not find entry for remote bdaddr %s",
 118                                 bt_ntoa(raddr, NULL));
 119                 return;
 120         }
 121
 122         syslog(LOG_DEBUG, "Updating link key for the entry, " \
 123                         "remote bdaddr %s, name '%s', link key %s",
 124                         bt_ntoa(&lkey->bdaddr, NULL),
 125                         (lkey->name != NULL)? lkey->name : "No name",
 126                         (lkey->key != NULL)? "exists" : "doesn't exist");
 127
 128         if (lkey->key == NULL) {
 129                 lkey->key = (uint8_t *) malloc(HCI_KEY_SIZE);
 130                 if (lkey->key == NULL) {
 131                         syslog(LOG_ERR, "Could not allocate link key");
 132                         exit(1);
 133                 }
 134         }
 135
 136         memcpy(lkey->key, key, HCI_KEY_SIZE);
 137
 138         dump_keys_file();
 139         read_config_file();
 140         read_keys_file();
 141
 142         return;
 143 }
 144