lib/libbluetooth/devaddr.c

   1 /* $NetBSD: devaddr.c,v 1.2 2006/08/28 08:24:39 plunky Exp $ */
   2 /* $DragonFly: src/lib/libbluetooth/devaddr.c,v 1.1 2008/01/03 11:47:52 hasso Exp $ */
   3
   4 /*-
   5  * Copyright (c) 2006 Itronix Inc.
   6  * All rights reserved.
   7  *
   8  * Written by Iain Hibbert for Itronix Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of Itronix Inc. may not be used to endorse
  19  *    or promote products derived from this software without specific
  20  *    prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
  26  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  29  * ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <sys/ioctl.h>
  36 #include <bluetooth.h>
  37 #include <errno.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43 int
  44 bt_devaddr(const char *name, bdaddr_t *addr)
  45 {
  46         struct btreq btr;
  47         bdaddr_t bdaddr;
  48         int s, rv;
  49
  50         if (name == NULL) {
  51                 errno = EINVAL;
  52                 return 0;
  53         }
  54
  55         if (addr == NULL)
  56                 addr = &bdaddr;
  57
  58         if (bt_aton(name, addr))
  59                 return bt_devname(NULL, addr);
  60
  61         memset(&btr, 0, sizeof(btr));
  62         strlcpy(btr.btr_name, name, HCI_DEVNAME_SIZE);
  63
  64         s = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
  65         if (s == -1)
  66                 return 0;
  67
  68         rv = ioctl(s, SIOCGBTINFO, &btr);
  69         close(s);
  70
  71         if (rv == -1)
  72                 return 0;
  73
  74         if ((btr.btr_flags & BTF_UP) == 0) {
  75                 errno = ENXIO;
  76                 return 0;
  77         }
  78
  79         bdaddr_copy(addr, &btr.btr_bdaddr);
  80         return 1;
  81 }
  82
  83 int
  84 bt_devname(char *name, const bdaddr_t *addr)
  85 {
  86         struct btreq btr;
  87         int s, rv;
  88
  89         if (addr == NULL) {
  90                 errno = EINVAL;
  91                 return 0;
  92         }
  93
  94         memset(&btr, 0, sizeof(btr));
  95         bdaddr_copy(&btr.btr_bdaddr, addr);
  96
  97         s = socket(PF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
  98         if (s == -1)
  99                 return 0;
 100
 101         rv = ioctl(s, SIOCGBTINFOA, &btr);
 102         close(s);
 103
 104         if (rv == -1)
 105                 return 0;
 106
 107         if ((btr.btr_flags & BTF_UP) == 0) {
 108                 errno = ENXIO;
 109                 return 0;
 110         }
 111
 112         if (name != NULL)
 113                 strlcpy(name, btr.btr_name, HCI_DEVNAME_SIZE);
 114
 115         return 1;
 116 }