session.c revision 331722
1/* 2 * session.c 3 * 4 * Copyright (c) 2001-2003 Maksim Yevmenkin <m_evmenkin@yahoo.com> 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $Id: session.c,v 1.2 2003/09/04 22:12:13 max Exp $ 29 * $FreeBSD: stable/11/lib/libsdp/session.c 331722 2018-03-29 02:50:57Z eadler $ 30 */ 31#define L2CAP_SOCKET_CHECKED 32#include <bluetooth.h> 33#include <errno.h> 34#include <stdlib.h> 35#include <string.h> 36#include <unistd.h> 37 38#include <sdp-int.h> 39#include <sdp.h> 40 41void * 42sdp_open(bdaddr_t const *l, bdaddr_t const *r) 43{ 44 sdp_session_p ss = NULL; 45 struct sockaddr_l2cap sa; 46 socklen_t size; 47 48 if ((ss = calloc(1, sizeof(*ss))) == NULL) 49 goto fail; 50 51 if (l == NULL || r == NULL) { 52 ss->error = EINVAL; 53 goto fail; 54 } 55 56 ss->s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP); 57 if (ss->s < 0) { 58 ss->error = errno; 59 goto fail; 60 } 61 62 sa.l2cap_len = sizeof(sa); 63 sa.l2cap_family = AF_BLUETOOTH; 64 sa.l2cap_psm = 0; 65 sa.l2cap_cid = 0; 66 sa.l2cap_bdaddr_type = BDADDR_BREDR; 67 68 memcpy(&sa.l2cap_bdaddr, l, sizeof(sa.l2cap_bdaddr)); 69 if (bind(ss->s, (struct sockaddr *) &sa, sizeof(sa)) < 0) { 70 ss->error = errno; 71 goto fail; 72 } 73 74 sa.l2cap_psm = htole16(NG_L2CAP_PSM_SDP); 75 memcpy(&sa.l2cap_bdaddr, r, sizeof(sa.l2cap_bdaddr)); 76 if (connect(ss->s, (struct sockaddr *) &sa, sizeof(sa)) < 0) { 77 ss->error = errno; 78 goto fail; 79 } 80 81 size = sizeof(ss->omtu); 82 if (getsockopt(ss->s, SOL_L2CAP, SO_L2CAP_OMTU, &ss->omtu, &size) < 0) { 83 ss->error = errno; 84 goto fail; 85 } 86 if ((ss->req = malloc(ss->omtu)) == NULL) { 87 ss->error = ENOMEM; 88 goto fail; 89 } 90 ss->req_e = ss->req + ss->omtu; 91 92 size = sizeof(ss->imtu); 93 if (getsockopt(ss->s, SOL_L2CAP, SO_L2CAP_IMTU, &ss->imtu, &size) < 0) { 94 ss->error = errno; 95 goto fail; 96 } 97 if ((ss->rsp = malloc(ss->imtu)) == NULL) { 98 ss->error = ENOMEM; 99 goto fail; 100 } 101 ss->rsp_e = ss->rsp + ss->imtu; 102 ss->error = 0; 103fail: 104 return ((void *) ss); 105} 106 107void * 108sdp_open_local(char const *control) 109{ 110 sdp_session_p ss = NULL; 111 struct sockaddr_un sa; 112 113 if ((ss = calloc(1, sizeof(*ss))) == NULL) 114 goto fail; 115 116 ss->s = socket(PF_UNIX, SOCK_STREAM, 0); 117 if (ss->s < 0) { 118 ss->error = errno; 119 goto fail; 120 } 121 122 if (control == NULL) 123 control = SDP_LOCAL_PATH; 124 125 sa.sun_len = sizeof(sa); 126 sa.sun_family = AF_UNIX; 127 strlcpy(sa.sun_path, control, sizeof(sa.sun_path)); 128 129 if (connect(ss->s, (struct sockaddr *) &sa, sizeof(sa)) < 0) { 130 ss->error = errno; 131 goto fail; 132 } 133 134 ss->flags |= SDP_SESSION_LOCAL; 135 ss->imtu = ss->omtu = SDP_LOCAL_MTU; 136 137 if ((ss->req = malloc(ss->omtu)) == NULL) { 138 ss->error = ENOMEM; 139 goto fail; 140 } 141 ss->req_e = ss->req + ss->omtu; 142 143 if ((ss->rsp = malloc(ss->imtu)) == NULL) { 144 ss->error = ENOMEM; 145 goto fail; 146 } 147 ss->rsp_e = ss->rsp + ss->imtu; 148 ss->error = 0; 149fail: 150 return ((void *) ss); 151} 152 153int32_t 154sdp_close(void *xss) 155{ 156 sdp_session_p ss = (sdp_session_p) xss; 157 158 if (ss != NULL) { 159 if (ss->s >= 0) 160 close(ss->s); 161 162 if (ss->req != NULL) 163 free(ss->req); 164 if (ss->rsp != NULL) 165 free(ss->rsp); 166 167 memset(ss, 0, sizeof(*ss)); 168 free(ss); 169 } 170 171 return (0); 172} 173 174int32_t 175sdp_error(void *xss) 176{ 177 sdp_session_p ss = (sdp_session_p) xss; 178 179 return ((ss != NULL)? ss->error : EINVAL); 180} 181