lib/libsdp/session.c

   1 /* $NetBSD: session.c,v 1.2 2007/04/07 21:08:46 plunky Exp $ */
   2 /* $DragonFly: src/lib/libsdp/session.c,v 1.1 2008/01/03 11:47:53 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  * session.c
  36  *
  37  * Copyright (c) 2001-2003 Maksim Yevmenkin <m_evmenkin@yahoo.com>
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  * 2. Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in the
  47  *    documentation and/or other materials provided with the distribution.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  * $Id: session.c,v 1.2 2007/04/07 21:08:46 plunky Exp $
  62  * $FreeBSD: src/lib/libsdp/session.c,v 1.3 2004/01/09 22:44:28 emax Exp $
  63  */
  64
  65 #include <sys/types.h>
  66 #include <sys/un.h>
  67 #include <bluetooth.h>
  68 #include <errno.h>
  69 #include <stdlib.h>
  70 #include <string.h>
  71 #include <unistd.h>
  72
  73 #include <sdp-int.h>
  74 #include <sdp.h>
  75
  76 void *
  77 sdp_open(bdaddr_t const *l, bdaddr_t const *r)
  78 {
  79         sdp_session_p           ss = NULL;
  80         struct sockaddr_bt      sa;
  81         struct linger           li;
  82         socklen_t               size;
  83
  84         if ((ss = calloc(1, sizeof(*ss))) == NULL)
  85                 goto fail;
  86
  87         if (l == NULL || r == NULL) {
  88                 ss->error = EINVAL;
  89                 goto fail;
  90         }
  91
  92         ss->s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
  93         if (ss->s < 0) {
  94                 ss->error = errno;
  95                 goto fail;
  96         }
  97
  98         memset(&li, 0, sizeof(li));
  99         li.l_onoff = 1;
 100         li.l_linger = 5;
 101         if (setsockopt(ss->s, SOL_SOCKET, SO_LINGER, &li, sizeof(li)) < 0) {
 102                 ss->error = errno;
 103                 goto fail;
 104         }
 105
 106         memset(&sa, 0, sizeof(sa));
 107         sa.bt_len = sizeof(sa);
 108         sa.bt_family = AF_BLUETOOTH;
 109         bdaddr_copy(&sa.bt_bdaddr, l);
 110         if (bind(ss->s, (void *) &sa, sizeof(sa)) < 0) {
 111                 ss->error = errno;
 112                 goto fail;
 113         }
 114
 115         sa.bt_psm = L2CAP_PSM_SDP;
 116         bdaddr_copy(&sa.bt_bdaddr, r);
 117         if (connect(ss->s, (void *) &sa, sizeof(sa)) < 0) {
 118                 ss->error = errno;
 119                 goto fail;
 120         }
 121
 122         size = sizeof(ss->omtu);
 123         if (getsockopt(ss->s, BTPROTO_L2CAP, SO_L2CAP_OMTU, &ss->omtu, &size) < 0) {
 124                 ss->error = errno;
 125                 goto fail;
 126         }
 127         if ((ss->req = malloc((size_t)ss->omtu)) == NULL) {
 128                 ss->error = ENOMEM;
 129                 goto fail;
 130         }
 131         ss->req_e = ss->req + ss->omtu;
 132
 133         size = sizeof(ss->imtu);
 134         if (getsockopt(ss->s, BTPROTO_L2CAP, SO_L2CAP_IMTU, &ss->imtu, &size) < 0) {
 135                 ss->error = errno;
 136                 goto fail;
 137         }
 138         if ((ss->rsp = malloc((size_t)ss->imtu)) == NULL) {
 139                 ss->error = ENOMEM;
 140                 goto fail;
 141         }
 142         ss->rsp_e = ss->rsp + ss->imtu;
 143         ss->error = 0;
 144 fail:
 145         return ((void *) ss);
 146 }
 147
 148 void *
 149 sdp_open_local(char const *control)
 150 {
 151         sdp_session_p           ss = NULL;
 152         struct sockaddr_un      sa;
 153
 154         if ((ss = calloc(1, sizeof(*ss))) == NULL)
 155                 goto fail;
 156
 157         ss->s = socket(PF_LOCAL, SOCK_STREAM, 0);
 158         if (ss->s < 0) {
 159                 ss->error = errno;
 160                 goto fail;
 161         }
 162
 163         if (control == NULL)
 164                 control = SDP_LOCAL_PATH;
 165
 166         sa.sun_len = sizeof(sa);
 167         sa.sun_family = AF_LOCAL;
 168         strlcpy(sa.sun_path, control, sizeof(sa.sun_path));
 169
 170         if (connect(ss->s, (void *) &sa, sizeof(sa)) < 0) {
 171                 ss->error = errno;
 172                 goto fail;
 173         }
 174
 175         ss->flags |= SDP_SESSION_LOCAL;
 176         ss->imtu = ss->omtu = SDP_LOCAL_MTU;
 177
 178         if ((ss->req = malloc((size_t)ss->omtu)) == NULL) {
 179                 ss->error = ENOMEM;
 180                 goto fail;
 181         }
 182         ss->req_e = ss->req + ss->omtu;
 183
 184         if ((ss->rsp = malloc((size_t)ss->imtu)) == NULL) {
 185                 ss->error = ENOMEM;
 186                 goto fail;
 187         }
 188         ss->rsp_e = ss->rsp + ss->imtu;
 189         ss->error = 0;
 190 fail:
 191         return ((void *) ss);
 192 }
 193
 194 int32_t
 195 sdp_close(void *xss)
 196 {
 197         sdp_session_p   ss = (sdp_session_p) xss;
 198
 199         if (ss != NULL) {
 200                 if (ss->s >= 0)
 201                         close(ss->s);
 202
 203                 if (ss->req != NULL)
 204                         free(ss->req);
 205                 if (ss->rsp != NULL)
 206                         free(ss->rsp);
 207
 208                 memset(ss, 0, sizeof(*ss));
 209                 free(ss);
 210         }
 211
 212         return (0);
 213 }
 214
 215 int32_t
 216 sdp_error(void *xss)
 217 {
 218         sdp_session_p   ss = (sdp_session_p) xss;
 219
 220         return ((ss != NULL)? ss->error : EINVAL);
 221 }