1 /* $NetBSD: btpin.c,v 1.5 2009/05/16 07:18:42 plunky 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 __COPYRIGHT("@(#) Copyright (c) 2006 Itronix, Inc. All rights reserved."); 36 __RCSID("$NetBSD: btpin.c,v 1.5 2009/05/16 07:18:42 plunky Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/un.h> 40 #include <bluetooth.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <time.h> 46 #include <unistd.h> 47 48 int main(int, char *[]); 49 void usage(void); 50 51 int 52 main(int ac, char *av[]) 53 { 54 bthcid_pin_response_t rp; 55 struct sockaddr_un un; 56 struct sockaddr_bt bt; 57 char *pin = NULL; 58 int ch, s, len, pair; 59 60 memset(&rp, 0, sizeof(rp)); 61 len = -1; 62 pair = 0; 63 64 memset(&un, 0, sizeof(un)); 65 un.sun_len = sizeof(un); 66 un.sun_family = AF_LOCAL; 67 strlcpy(un.sun_path, BTHCID_SOCKET_NAME, sizeof(un.sun_path)); 68 69 while ((ch = getopt(ac, av, "a:d:l:Pp:rs:")) != -1) { 70 switch (ch) { 71 case 'a': 72 if (!bt_aton(optarg, &rp.raddr)) { 73 struct hostent *he = NULL; 74 75 if ((he = bt_gethostbyname(optarg)) == NULL) 76 errx(EXIT_FAILURE, "%s: %s", optarg, 77 hstrerror(h_errno)); 78 79 bdaddr_copy(&rp.raddr, (bdaddr_t *)he->h_addr); 80 } 81 break; 82 83 case 'd': 84 if (!bt_devaddr(optarg, &rp.laddr)) 85 err(EXIT_FAILURE, "%s", optarg); 86 87 break; 88 89 case 'l': 90 len = atoi(optarg); 91 if (len < 1 || len > HCI_PIN_SIZE) 92 errx(EXIT_FAILURE, "Invalid PIN length"); 93 94 break; 95 96 case 'P': 97 pair++; 98 break; 99 100 case 'p': 101 pin = optarg; 102 break; 103 104 case 'r': 105 if (len == -1) 106 len = 4; 107 108 break; 109 110 case 's': 111 strlcpy(un.sun_path, optarg, sizeof(un.sun_path)); 112 break; 113 114 default: 115 usage(); 116 } 117 } 118 119 if (bdaddr_any(&rp.raddr)) 120 usage(); 121 122 if (pin == NULL) { 123 if (len == -1) 124 usage(); 125 126 srandom(time(NULL)); 127 128 pin = (char *)rp.pin; 129 while (len-- > 0) 130 *pin++ = '0' + (random() % 10); 131 132 printf("PIN: %.*s\n", HCI_PIN_SIZE, rp.pin); 133 } else { 134 if (len != -1) 135 usage(); 136 137 strncpy((char *)rp.pin, pin, HCI_PIN_SIZE); 138 } 139 140 s = socket(PF_LOCAL, SOCK_STREAM, 0); 141 if (s < 0) 142 err(EXIT_FAILURE, "socket"); 143 144 if (connect(s, (struct sockaddr *)&un, sizeof(un)) < 0) 145 err(EXIT_FAILURE, "connect(\"%s\")", un.sun_path); 146 147 if (send(s, &rp, sizeof(rp), 0) != sizeof(rp)) 148 err(EXIT_FAILURE, "send"); 149 150 close(s); 151 152 if (pair == 0) 153 exit(EXIT_SUCCESS); 154 155 s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP); 156 if (s < 0) 157 err(EXIT_FAILURE, "socket"); 158 159 ch = L2CAP_LM_AUTH; 160 if (setsockopt(s, BTPROTO_L2CAP, SO_L2CAP_LM, &ch, sizeof(ch)) < 0) 161 err(EXIT_FAILURE, "SO_L2CAP_LM"); 162 163 memset(&bt, 0, sizeof(bt)); 164 bt.bt_len = sizeof(bt); 165 bt.bt_family = AF_BLUETOOTH; 166 bdaddr_copy(&bt.bt_bdaddr, &rp.laddr); 167 if (bind(s, (struct sockaddr *)&bt, sizeof(bt)) < 0) 168 err(EXIT_FAILURE, "bind"); 169 170 fprintf(stdout, "Pairing.. "); 171 fflush(stdout); 172 173 bt.bt_psm = L2CAP_PSM_SDP; 174 bdaddr_copy(&bt.bt_bdaddr, &rp.raddr); 175 if (connect(s, (struct sockaddr *)&bt, sizeof(bt)) < 0) { 176 fprintf(stdout, "failed (%s)\n", strerror(errno)); 177 exit(EXIT_FAILURE); 178 } 179 180 close(s); 181 fprintf(stdout, "done\n"); 182 183 exit(EXIT_SUCCESS); 184 } 185 186 void 187 usage(void) 188 { 189 190 fprintf(stderr, 191 "usage: %s [-P] [-d device] [-s socket] {-p pin | -r [-l len]} -a addr\n" 192 "", getprogname()); 193 194 exit(EXIT_FAILURE); 195 } 196