btkey.c revision 1.2
1 /* $NetBSD: btkey.c,v 1.2 2008/07/21 14:19:21 lukem Exp $ */ 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 __COPYRIGHT("@(#) Copyright (c) 2007 Iain Hibbert. All rights reserved."); 32 __RCSID("$NetBSD: btkey.c,v 1.2 2008/07/21 14:19:21 lukem Exp $"); 33 34 #include <bluetooth.h> 35 #include <err.h> 36 #include <errno.h> 37 #include <stdbool.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #include "btkey.h" 43 44 static void usage(void); 45 static bool scan_key(const char *); 46 47 bdaddr_t laddr; 48 bdaddr_t raddr; 49 uint8_t key[HCI_KEY_SIZE]; 50 51 int 52 main(int ac, char *av[]) 53 { 54 struct hostent *he; 55 int ch; 56 bool cf, cd, lf, ld, rf, rd, wf, wd, nk; 57 58 memset(&laddr, 0, sizeof(laddr)); 59 memset(&raddr, 0, sizeof(raddr)); 60 memset(key, 0, sizeof(key)); 61 cf = cd = lf = ld = rf = rd = wf = wd = nk = false; 62 63 while ((ch = getopt(ac, av, "a:cCd:k:lLrRwW")) != EOF) { 64 switch (ch) { 65 case 'a': /* remote device address */ 66 if (!bt_aton(optarg, &raddr)) { 67 he = bt_gethostbyname(optarg); 68 if (he == NULL) 69 errx(EXIT_FAILURE, "%s: %s", 70 optarg, hstrerror(h_errno)); 71 72 bdaddr_copy(&raddr, (bdaddr_t *)he->h_addr); 73 } 74 break; 75 76 case 'c': /* clear from file */ 77 cf = true; 78 break; 79 80 case 'C': /* clear from device */ 81 cd = true; 82 break; 83 84 case 'd': /* local device address */ 85 if (!bt_devaddr(optarg, &laddr) 86 && !bt_aton(optarg, &laddr)) { 87 he = bt_gethostbyname(optarg); 88 if (he == NULL) 89 errx(EXIT_FAILURE, "%s: %s", 90 optarg, hstrerror(h_errno)); 91 92 bdaddr_copy(&laddr, (bdaddr_t *)he->h_addr); 93 } 94 break; 95 96 case 'k': /* new link key */ 97 if (!scan_key(optarg)) 98 errx(EXIT_FAILURE, "invalid key '%s'", optarg); 99 100 nk = true; 101 break; 102 103 case 'l': /* list from file */ 104 lf = true; 105 break; 106 107 case 'L': /* list from device */ 108 ld = true; 109 break; 110 111 case 'r': /* read from file */ 112 rf = true; 113 break; 114 115 case 'R': /* read from device */ 116 rd = true; 117 break; 118 119 case 'w': /* write to file */ 120 wf = true; 121 break; 122 123 case 'W': /* write to device */ 124 wd = true; 125 break; 126 127 default: 128 usage(); 129 } 130 } 131 132 ac -= optind; 133 av += optind; 134 135 /* 136 * validate options 137 */ 138 if ((lf || ld) && (rf || rd || wf || wd || cf || cd || nk)) 139 errx(EXIT_FAILURE, "list is exclusive of other options"); 140 141 if (((rf && rd) || (rf && nk) || (rd && nk)) && (wf || wd)) 142 errx(EXIT_FAILURE, "too many key sources"); 143 144 if (((bdaddr_any(&laddr) || bdaddr_any(&raddr)) && !(lf || ld)) 145 || ((lf || ld) && (bdaddr_any(&laddr) || !bdaddr_any(&raddr))) 146 || ac > 0) 147 usage(); 148 149 /* 150 * do what we gotta do and be done 151 */ 152 if (!bdaddr_any(&laddr)) 153 print_addr("device", &laddr); 154 155 if (!bdaddr_any(&raddr)) 156 print_addr("bdaddr", &raddr); 157 158 if (lf && !list_file()) 159 err(EXIT_FAILURE, "list file"); 160 161 if (ld && !list_device()) 162 err(EXIT_FAILURE, "list device"); 163 164 if (nk) 165 print_key("new key", key); 166 167 if (rf) { 168 if (!read_file()) 169 err(EXIT_FAILURE, "file key"); 170 171 print_key("file key", key); 172 } 173 174 if (rd) { 175 if (!read_device()) 176 err(EXIT_FAILURE, "device key"); 177 178 print_key("device key", key); 179 } 180 181 if (wf || wd || cf || cd) 182 printf("\n"); 183 184 if (wf) { 185 if (!write_file()) 186 err(EXIT_FAILURE, "write to file"); 187 188 printf("written to file\n"); 189 } 190 191 if (wd) { 192 if (!write_device()) 193 err(EXIT_FAILURE, "write to device"); 194 195 printf("written to device\n"); 196 } 197 198 if (cf) { 199 if (!clear_file()) 200 err(EXIT_FAILURE, "clear from file"); 201 202 printf("cleared from file\n"); 203 } 204 205 if (cd) { 206 if (!clear_device()) 207 err(EXIT_FAILURE, "clear from device"); 208 209 printf("cleared from device\n"); 210 } 211 212 exit(EXIT_SUCCESS); 213 } 214 215 static void 216 usage(void) 217 { 218 219 fprintf(stderr, 220 "Usage: %s [-cCrRwW] [-k key] -a address -d device\n" 221 " %s -lL -d device\n" 222 "\n", getprogname(), getprogname()); 223 224 fprintf(stderr, 225 "Where:\n" 226 "\t-a address remote device address\n" 227 "\t-c clear from file\n" 228 "\t-C clear from device\n" 229 "\t-d device local device address\n" 230 "\t-k key user specified link_key\n" 231 "\t-l list file keys\n" 232 "\t-L list device keys\n" 233 "\t-r read from file\n" 234 "\t-R read from device\n" 235 "\t-w write to file\n" 236 "\t-W write to device\n" 237 "\n"); 238 239 exit(EXIT_FAILURE); 240 } 241 242 static bool 243 scan_key(const char *arg) 244 { 245 static const char digits[] = "0123456789abcdef"; 246 const char *p; 247 int i, j; 248 249 memset(key, 0, sizeof(key)); 250 251 for (i = 0 ; i < HCI_KEY_SIZE ; i++) { 252 for (j = 0 ; j < 2 ; j++) { 253 if (*arg == '\0') 254 return true; 255 256 for (p = digits ; *p != *arg ; p++) 257 if (*p == '\0') 258 return false; 259 260 arg++; 261 key[i] = (key[i] << 4) + (p - digits); 262 } 263 } 264 265 if (*arg != '\0') 266 return false; 267 268 return true; 269 } 270 271 void 272 print_key(const char *type, const uint8_t *src) 273 { 274 int i; 275 276 printf("%10s: ", type); 277 for (i = 0 ; i < HCI_KEY_SIZE ; i++) 278 printf("%2.2x", src[i]); 279 280 printf("\n"); 281 } 282 283 284 void 285 print_addr(const char *type, const bdaddr_t *addr) 286 { 287 char name[HCI_DEVNAME_SIZE]; 288 struct hostent *he; 289 290 printf("%10s: %s", type, bt_ntoa(addr, NULL)); 291 292 if (bt_devname(name, addr)) 293 printf(" (%s)", name); 294 else if ((he = bt_gethostbyaddr((const char *)addr, 295 sizeof(bdaddr_t), AF_BLUETOOTH)) != NULL) 296 printf(" (%s)", he->h_name); 297 298 printf("\n"); 299 } 300
Indexes created Fri Sep 26 20:09:58 GMT 2025