usr.bin/btkey/file.c

   1 /*      $NetBSD: file.c$        */
   2
   3 /*-
   4  * Copyright (c) 2007 Iain Hibbert
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __RCSID("$NetBSD: file.c$");
  32
  33 #include <sys/stat.h>
  34 #include <prop/proplib.h>
  35
  36 #include <bluetooth.h>
  37 #include <stdbool.h>
  38 #include <string.h>
  39
  40 #include "btkey.h"
  41
  42 static const char *key_file = "/var/db/bthcid.keys";
  43
  44 /*
  45  * List keys file.
  46  */
  47 bool
  48 list_file(void)
  49 {
  50         prop_dictionary_t db, dev;
  51         prop_object_iterator_t iter;
  52         prop_dictionary_keysym_t sym;
  53         prop_object_t dat;
  54         bdaddr_t bdaddr;
  55         bool rv = false;
  56
  57         db = prop_dictionary_internalize_from_file(key_file);
  58         if (db == NULL)
  59                 return false;
  60
  61         dev = prop_dictionary_get(db, bt_ntoa(&laddr, NULL));
  62         if (prop_object_type(dev) != PROP_TYPE_DICTIONARY)
  63                 goto done;
  64
  65         iter = prop_dictionary_iterator(dev);
  66         if (iter == NULL)
  67                 goto done;
  68
  69         while ((sym = prop_object_iterator_next(iter)) != NULL) {
  70                 memset(&bdaddr, 0, sizeof(bdaddr));
  71                 bt_aton(prop_dictionary_keysym_cstring_nocopy(sym), &bdaddr);
  72                 if (bdaddr_any(&bdaddr))
  73                         continue;
  74
  75                 dat = prop_dictionary_get_keysym(dev, sym);
  76                 if (prop_data_size(dat) != HCI_KEY_SIZE)
  77                         continue;
  78
  79                 printf("\n");
  80                 print_addr("bdaddr", &bdaddr);
  81                 print_key("file key", prop_data_data_nocopy(dat));
  82         }
  83
  84         prop_object_iterator_release(iter);
  85         rv = true;
  86
  87 done:
  88         prop_object_release(db);
  89         return rv;
  90 }
  91
  92 /*
  93  * Read from keys file.
  94  */
  95 bool
  96 read_file(void)
  97 {
  98         prop_dictionary_t db, dev;
  99         prop_object_t dat;
 100         bool rv = false;
 101
 102         db = prop_dictionary_internalize_from_file(key_file);
 103         if (db == NULL)
 104                 return false;
 105
 106         dev = prop_dictionary_get(db, bt_ntoa(&laddr, NULL));
 107         if (prop_object_type(dev) != PROP_TYPE_DICTIONARY)
 108                 goto done;
 109
 110         dat = prop_dictionary_get(dev, bt_ntoa(&raddr, NULL));
 111         if (prop_data_size(dat) != HCI_KEY_SIZE)
 112                 goto done;
 113
 114         memcpy(key, prop_data_data_nocopy(dat), HCI_KEY_SIZE);
 115         rv = true;
 116
 117 done:
 118         prop_object_release(db);
 119         return rv;
 120 }
 121
 122 /*
 123  * Write to keys file.
 124  */
 125 bool
 126 write_file(void)
 127 {
 128         prop_dictionary_t db, dev;
 129         prop_data_t dat;
 130         mode_t mode;
 131         bool rv = false;
 132
 133         db = prop_dictionary_internalize_from_file(key_file);
 134         if (db == NULL) {
 135                 db = prop_dictionary_create();
 136                 if (db == NULL)
 137                         return false;
 138         }
 139
 140         dev = prop_dictionary_get(db, bt_ntoa(&laddr, NULL));
 141         if (dev == NULL) {
 142                 dev = prop_dictionary_create();
 143                 if (dev == NULL)
 144                         goto done;
 145
 146                 rv = prop_dictionary_set(db, bt_ntoa(&laddr, NULL), dev);
 147                 prop_object_release(dev);
 148                 if (rv == false)
 149                         goto done;
 150         }
 151
 152         dat = prop_data_create_data_nocopy(key, HCI_KEY_SIZE);
 153         if (dat == NULL)
 154                 goto done;
 155
 156         rv = prop_dictionary_set(dev, bt_ntoa(&raddr, NULL), dat);
 157         prop_object_release(dat);
 158         if (rv == false)
 159                 goto done;
 160
 161         mode = umask(S_IRWXG | S_IRWXO);
 162         rv = prop_dictionary_externalize_to_file(db, key_file);
 163         umask(mode);
 164
 165 done:
 166         prop_object_release(db);
 167         return rv;
 168 }
 169
 170 /*
 171  * Clear from keys file.
 172  */
 173 bool
 174 clear_file(void)
 175 {
 176         prop_dictionary_t db, dev;
 177         prop_data_t dat;
 178         mode_t mode;
 179         bool rv = false;
 180
 181         db = prop_dictionary_internalize_from_file(key_file);
 182         if (db == NULL)
 183                 return false;
 184
 185         dev = prop_dictionary_get(db, bt_ntoa(&laddr, NULL));
 186         if (dev == NULL)
 187                 goto done;
 188
 189         dat = prop_dictionary_get(dev, bt_ntoa(&raddr, NULL));
 190         if (prop_data_size(dat) != HCI_KEY_SIZE)
 191                 goto done;
 192
 193         prop_dictionary_remove(dev, bt_ntoa(&raddr, NULL));
 194
 195         mode = umask(S_IRWXG | S_IRWXO);
 196         rv = prop_dictionary_externalize_to_file(db, key_file);
 197         umask(mode);
 198
 199 done:
 200         prop_object_release(db);
 201         return rv;
 202 }