freebsd-dev/lib/libsdp/service.c
2015-04-07 16:48:23 +00:00

239 lines
5.6 KiB
C

/*
* service.c
*
* Copyright (c) 2001-2003 Maksim Yevmenkin <m_evmenkin@yahoo.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: service.c,v 1.1 2004/01/13 19:32:36 max Exp $
* $FreeBSD$
*/
#include <sys/uio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define L2CAP_SOCKET_CHECKED
#include <bluetooth.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sdp-int.h>
#include <sdp.h>
static int32_t sdp_receive_error_pdu(sdp_session_p ss);
int32_t
sdp_register_service(void *xss, uint16_t uuid, bdaddr_p const bdaddr,
uint8_t const *data, uint32_t datalen, uint32_t *handle)
{
sdp_session_p ss = (sdp_session_p) xss;
struct iovec iov[4];
sdp_pdu_t pdu;
int32_t len;
if (ss == NULL)
return (-1);
if (bdaddr == NULL || data == NULL ||
datalen == 0 || !(ss->flags & SDP_SESSION_LOCAL)) {
ss->error = EINVAL;
return (-1);
}
if (sizeof(pdu)+sizeof(uuid)+sizeof(*bdaddr)+datalen > SDP_LOCAL_MTU) {
ss->error = EMSGSIZE;
return (-1);
}
pdu.pid = SDP_PDU_SERVICE_REGISTER_REQUEST;
pdu.tid = htons(++ss->tid);
pdu.len = htons(sizeof(uuid) + sizeof(*bdaddr) + datalen);
uuid = htons(uuid);
iov[0].iov_base = (void *) &pdu;
iov[0].iov_len = sizeof(pdu);
iov[1].iov_base = (void *) &uuid;
iov[1].iov_len = sizeof(uuid);
iov[2].iov_base = (void *) bdaddr;
iov[2].iov_len = sizeof(*bdaddr);
iov[3].iov_base = (void *) data;
iov[3].iov_len = datalen;
do {
len = writev(ss->s, iov, sizeof(iov)/sizeof(iov[0]));
} while (len < 0 && errno == EINTR);
if (len < 0) {
ss->error = errno;
return (-1);
}
len = sdp_receive_error_pdu(ss);
if (len < 0)
return (-1);
if (len != sizeof(pdu) + sizeof(uint16_t) + sizeof(uint32_t)) {
ss->error = EIO;
return (-1);
}
if (handle != NULL) {
*handle = (uint32_t) ss->rsp[--len];
*handle |= (uint32_t) ss->rsp[--len] << 8;
*handle |= (uint32_t) ss->rsp[--len] << 16;
*handle |= (uint32_t) ss->rsp[--len] << 24;
}
return (0);
}
int32_t
sdp_unregister_service(void *xss, uint32_t handle)
{
sdp_session_p ss = (sdp_session_p) xss;
struct iovec iov[2];
sdp_pdu_t pdu;
int32_t len;
if (ss == NULL)
return (-1);
if (!(ss->flags & SDP_SESSION_LOCAL)) {
ss->error = EINVAL;
return (-1);
}
if (sizeof(pdu) + sizeof(handle) > SDP_LOCAL_MTU) {
ss->error = EMSGSIZE;
return (-1);
}
pdu.pid = SDP_PDU_SERVICE_UNREGISTER_REQUEST;
pdu.tid = htons(++ss->tid);
pdu.len = htons(sizeof(handle));
handle = htonl(handle);
iov[0].iov_base = (void *) &pdu;
iov[0].iov_len = sizeof(pdu);
iov[1].iov_base = (void *) &handle;
iov[1].iov_len = sizeof(handle);
do {
len = writev(ss->s, iov, sizeof(iov)/sizeof(iov[0]));
} while (len < 0 && errno == EINTR);
if (len < 0) {
ss->error = errno;
return (-1);
}
return ((sdp_receive_error_pdu(ss) < 0)? -1 : 0);
}
int32_t
sdp_change_service(void *xss, uint32_t handle,
uint8_t const *data, uint32_t datalen)
{
sdp_session_p ss = (sdp_session_p) xss;
struct iovec iov[3];
sdp_pdu_t pdu;
int32_t len;
if (ss == NULL)
return (-1);
if (data == NULL || datalen == 0 || !(ss->flags & SDP_SESSION_LOCAL)) {
ss->error = EINVAL;
return (-1);
}
if (sizeof(pdu) + sizeof(handle) + datalen > SDP_LOCAL_MTU) {
ss->error = EMSGSIZE;
return (-1);
}
pdu.pid = SDP_PDU_SERVICE_CHANGE_REQUEST;
pdu.tid = htons(++ss->tid);
pdu.len = htons(sizeof(handle) + datalen);
handle = htons(handle);
iov[0].iov_base = (void *) &pdu;
iov[0].iov_len = sizeof(pdu);
iov[1].iov_base = (void *) &handle;
iov[1].iov_len = sizeof(handle);
iov[2].iov_base = (void *) data;
iov[2].iov_len = datalen;
do {
len = writev(ss->s, iov, sizeof(iov)/sizeof(iov[0]));
} while (len < 0 && errno == EINTR);
if (len < 0) {
ss->error = errno;
return (-1);
}
return ((sdp_receive_error_pdu(ss) < 0)? -1 : 0);
}
static int32_t
sdp_receive_error_pdu(sdp_session_p ss)
{
sdp_pdu_p pdu;
int32_t len;
uint16_t error;
do {
len = read(ss->s, ss->rsp, ss->rsp_e - ss->rsp);
} while (len < 0 && errno == EINTR);
if (len < 0) {
ss->error = errno;
return (-1);
}
pdu = (sdp_pdu_p) ss->rsp;
pdu->tid = ntohs(pdu->tid);
pdu->len = ntohs(pdu->len);
if (pdu->pid != SDP_PDU_ERROR_RESPONSE || pdu->tid != ss->tid ||
pdu->len < 2 || pdu->len != len - sizeof(*pdu)) {
ss->error = EIO;
return (-1);
}
error = (uint16_t) ss->rsp[sizeof(pdu)] << 8;
error |= (uint16_t) ss->rsp[sizeof(pdu) + 1];
if (error != 0) {
ss->error = EIO;
return (-1);
}
return (len);
}