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 } 142 143