1 /* $NetBSD: db.c,v 1.6 2020/06/07 00:12:00 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __RCSID("$NetBSD: db.c,v 1.6 2020/06/07 00:12:00 thorpej Exp $"); 36 37 #include <bluetooth.h> 38 #include <err.h> 39 #include <stdlib.h> 40 #include <stdbool.h> 41 42 #include <prop/proplib.h> 43 44 #include <dev/bluetooth/btdev.h> 45 #include <dev/bluetooth/bthidev.h> 46 #include <dev/bluetooth/btsco.h> 47 48 #include "btdevctl.h" 49 50 #define BTDEVCTL_PLIST "/var/db/btdevctl.plist" 51 #define BTDEVCTL_VERSION 2 52 53 static prop_dictionary_t db = NULL; 54 static bool db_flush = true; /* write db on set */ 55 56 static void db_update0(void); 57 static void db_update1(void); 58 59 /* 60 * lookup laddr/raddr/service in database and return dictionary 61 */ 62 prop_dictionary_t 63 db_get(bdaddr_t *laddr, bdaddr_t *raddr, const char *service) 64 { 65 prop_dictionary_t ldev, rdev, dev; 66 prop_object_t obj; 67 68 if (db == NULL) { 69 db = prop_dictionary_internalize_from_file(BTDEVCTL_PLIST); 70 if (db == NULL) { 71 db = prop_dictionary_create(); 72 if (db == NULL) 73 err(EXIT_FAILURE, "prop_dictionary_create"); 74 75 return NULL; 76 } else { 77 obj = prop_dictionary_get(db, "btdevctl-version"); 78 switch(prop_number_signed_value(obj)) { 79 case 0: db_update0(); 80 /* FALLTHROUGH */ 81 case 1: db_update1(); 82 /* FALLTHROUGH */ 83 case BTDEVCTL_VERSION: 84 break; 85 86 default: 87 errx(EXIT_FAILURE, "unknown btdevctl-version"); 88 } 89 } 90 } 91 92 ldev = prop_dictionary_get(db, bt_ntoa(laddr, NULL)); 93 if (prop_object_type(ldev) != PROP_TYPE_DICTIONARY) 94 return NULL; 95 96 rdev = prop_dictionary_get(ldev, bt_ntoa(raddr, NULL)); 97 if (prop_object_type(rdev) != PROP_TYPE_DICTIONARY) 98 return NULL; 99 100 dev = prop_dictionary_get(rdev, service); 101 if (prop_object_type(dev) != PROP_TYPE_DICTIONARY) 102 return NULL; 103 104 return dev; 105 } 106 107 /* 108 * store dictionary in database at laddr/raddr/service 109 */ 110 int 111 db_set(prop_dictionary_t dev, bdaddr_t *laddr, bdaddr_t *raddr, const char *service) 112 { 113 prop_dictionary_t ldev, rdev; 114 115 ldev = prop_dictionary_get(db, bt_ntoa(laddr, NULL)); 116 if (ldev == NULL) { 117 ldev = prop_dictionary_create(); 118 if (ldev == NULL) 119 return 0; 120 121 if (!prop_dictionary_set(db, bt_ntoa(laddr, NULL), ldev)) 122 return 0; 123 124 prop_object_release(ldev); 125 } 126 127 rdev = prop_dictionary_get(ldev, bt_ntoa(raddr, NULL)); 128 if (rdev == NULL) { 129 rdev = prop_dictionary_create(); 130 if (rdev == NULL) 131 return 0; 132 133 if (!prop_dictionary_set(ldev, bt_ntoa(raddr, NULL), rdev)) 134 return 0; 135 136 prop_object_release(rdev); 137 } 138 139 if (!prop_dictionary_set(rdev, service, dev)) 140 return 0; 141 142 if (db_flush == true) { 143 if (!prop_dictionary_set_int(db, "btdevctl-version", 144 BTDEVCTL_VERSION)) 145 err(EXIT_FAILURE, "prop_dictionary_set_int"); 146 147 if (!prop_dictionary_externalize_to_file(db, BTDEVCTL_PLIST)) 148 warn("%s", BTDEVCTL_PLIST); 149 } 150 151 return 1; 152 } 153 154 /* 155 * update database from version 0. This was a flat file using 156 * btdevN as an index, and local-bdaddr and remote-bdaddr stored 157 * as data objects. Step through and add them to the new dictionary. 158 * We have to generate the service, but only HID, HF and HSET 159 * were supported, so thats not too difficult. 160 */ 161 static void 162 db_update0(void) 163 { 164 prop_dictionary_t old, dev; 165 prop_dictionary_keysym_t key; 166 prop_object_iterator_t iter; 167 prop_object_t obj; 168 bdaddr_t laddr, raddr; 169 const char *service; 170 171 db_flush = false; /* no write on set */ 172 old = db; 173 174 db = prop_dictionary_create(); 175 if (db == NULL) 176 err(EXIT_FAILURE, "prop_dictionary_create"); 177 178 iter = prop_dictionary_iterator(old); 179 if (iter == NULL) 180 err(EXIT_FAILURE, "prop_dictionary_iterator"); 181 182 while ((key = prop_object_iterator_next(iter)) != NULL) { 183 dev = prop_dictionary_get_keysym(old, key); 184 if (prop_object_type(dev) != PROP_TYPE_DICTIONARY) 185 errx(EXIT_FAILURE, "invalid device dictionary"); 186 187 obj = prop_dictionary_get(dev, BTDEVladdr); 188 if (prop_data_size(obj) != sizeof(laddr)) 189 errx(EXIT_FAILURE, "invalid %s", BTDEVladdr); 190 191 bdaddr_copy(&laddr, prop_data_value(obj)); 192 prop_dictionary_remove(dev, BTDEVladdr); 193 194 obj = prop_dictionary_get(dev, BTDEVraddr); 195 if (prop_data_size(obj) != sizeof(raddr)) 196 errx(EXIT_FAILURE, "invalid %s", BTDEVraddr); 197 198 bdaddr_copy(&raddr, prop_data_value(obj)); 199 prop_dictionary_remove(dev, BTDEVraddr); 200 201 obj = prop_dictionary_get(dev, BTDEVtype); 202 if (prop_string_equals_string(obj, "bthidev")) 203 service = "HID"; 204 else if (prop_string_equals_string(obj, "btsco")) { 205 obj = prop_dictionary_get(dev, BTSCOlisten); 206 if (prop_bool_true(obj)) 207 service = "HF"; 208 else 209 service = "HSET"; 210 } else 211 errx(EXIT_FAILURE, "invalid %s", BTDEVtype); 212 213 if (!db_set(dev, &laddr, &raddr, service)) 214 err(EXIT_FAILURE, "service store failed"); 215 } 216 217 prop_object_iterator_release(iter); 218 prop_object_release(old); 219 220 db_flush = true; /* write on set */ 221 } 222 223 /* 224 * update database from version 1. Link Mode capability was added. 225 * By default, we request authentication for HIDs, and encryption 226 * is enabled for keyboards. 227 */ 228 static void 229 db_update1(void) 230 { 231 prop_dictionary_t ldev, rdev, srv; 232 prop_object_iterator_t iter0, iter1; 233 prop_dictionary_keysym_t key; 234 prop_object_t obj; 235 bdaddr_t bdaddr; 236 237 iter0 = prop_dictionary_iterator(db); 238 if (iter0 == NULL) 239 err(EXIT_FAILURE, "prop_dictionary_iterator"); 240 241 while ((key = prop_object_iterator_next(iter0)) != NULL) { 242 ldev = prop_dictionary_get_keysym(db, key); 243 if (prop_object_type(ldev) != PROP_TYPE_DICTIONARY 244 || !bt_aton(prop_dictionary_keysym_value(key), &bdaddr)) 245 continue; 246 247 iter1 = prop_dictionary_iterator(ldev); 248 if (iter1 == NULL) 249 err(EXIT_FAILURE, "prop_dictionary_iterator"); 250 251 while ((key = prop_object_iterator_next(iter1)) != NULL) { 252 rdev = prop_dictionary_get_keysym(ldev, key); 253 if (prop_object_type(rdev) != PROP_TYPE_DICTIONARY 254 || !bt_aton(prop_dictionary_keysym_value(key), &bdaddr)) 255 continue; 256 257 srv = prop_dictionary_get(rdev, "HID"); 258 if (prop_object_type(srv) != PROP_TYPE_DICTIONARY) 259 continue; 260 261 obj = prop_dictionary_get(srv, BTHIDEVdescriptor); 262 if (prop_object_type(obj) != PROP_TYPE_DATA) 263 continue; 264 265 if (!prop_dictionary_set_string_nocopy(srv, BTDEVmode, 266 hid_mode(obj))) 267 err(EXIT_FAILURE, "Cannot set %s", BTDEVmode); 268 } 269 270 prop_object_iterator_release(iter1); 271 } 272 273 prop_object_iterator_release(iter0); 274 } 275