226 lines
5.8 KiB
C
226 lines
5.8 KiB
C
|
/*
|
||
|
* ssar.c
|
||
|
*
|
||
|
* Copyright (c) 2004 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: ssar.c,v 1.4 2004/01/12 22:54:31 max Exp $
|
||
|
* $FreeBSD$
|
||
|
*/
|
||
|
|
||
|
#include <sys/queue.h>
|
||
|
#include <bluetooth.h>
|
||
|
#include <sdp.h>
|
||
|
#include <string.h>
|
||
|
#include "profile.h"
|
||
|
#include "provider.h"
|
||
|
#include "server.h"
|
||
|
|
||
|
/* from sar.c */
|
||
|
int32_t server_prepare_attr_list(provider_p const provider,
|
||
|
uint8_t const *req, uint8_t const * const req_end,
|
||
|
uint8_t *rsp, uint8_t const * const rsp_end);
|
||
|
|
||
|
/*
|
||
|
* Prepare SDP Service Search Attribute Response
|
||
|
*/
|
||
|
|
||
|
int32_t
|
||
|
server_prepare_service_search_attribute_response(server_p srv, int32_t fd)
|
||
|
{
|
||
|
uint8_t const *req = srv->req + sizeof(sdp_pdu_t);
|
||
|
uint8_t const *req_end = req + ((sdp_pdu_p)(srv->req))->len;
|
||
|
uint8_t *rsp = srv->fdidx[fd].rsp;
|
||
|
uint8_t const *rsp_end = rsp + NG_L2CAP_MTU_MAXIMUM;
|
||
|
|
||
|
uint8_t const *sspptr = NULL, *aidptr = NULL;
|
||
|
uint8_t *ptr = NULL;
|
||
|
|
||
|
provider_t *provider = NULL;
|
||
|
int32_t type, rsp_limit, ssplen, aidlen, cslen, cs, uuid;
|
||
|
|
||
|
/*
|
||
|
* Minimal Service Search Attribute Request request
|
||
|
*
|
||
|
* seq8 len8 - 2 bytes
|
||
|
* uuid16 value16 - 3 bytes ServiceSearchPattern
|
||
|
* value16 - 2 bytes MaximumAttributeByteCount
|
||
|
* seq8 len8 - 2 bytes
|
||
|
* uint16 value16 - 3 bytes AttributeIDList
|
||
|
* value8 - 1 byte ContinuationState
|
||
|
*/
|
||
|
|
||
|
if (req_end - req < 13)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
/* Get size of ServiceSearchPattern */
|
||
|
ssplen = 0;
|
||
|
SDP_GET8(type, req);
|
||
|
switch (type) {
|
||
|
case SDP_DATA_SEQ8:
|
||
|
SDP_GET8(ssplen, req);
|
||
|
break;
|
||
|
|
||
|
case SDP_DATA_SEQ16:
|
||
|
SDP_GET16(ssplen, req);
|
||
|
break;
|
||
|
|
||
|
case SDP_DATA_SEQ32:
|
||
|
SDP_GET32(ssplen, req);
|
||
|
break;
|
||
|
}
|
||
|
if (ssplen <= 0)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
sspptr = req;
|
||
|
req += ssplen;
|
||
|
|
||
|
/* Get MaximumAttributeByteCount */
|
||
|
if (req + 2 > req_end)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET16(rsp_limit, req);
|
||
|
if (rsp_limit <= 0)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
/* Get size of AttributeIDList */
|
||
|
if (req + 1 > req_end)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
aidlen = 0;
|
||
|
SDP_GET8(type, req);
|
||
|
switch (type) {
|
||
|
case SDP_DATA_SEQ8:
|
||
|
if (req + 1 > req_end)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET8(aidlen, req);
|
||
|
break;
|
||
|
|
||
|
case SDP_DATA_SEQ16:
|
||
|
if (req + 2 > req_end)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET16(aidlen, req);
|
||
|
break;
|
||
|
|
||
|
case SDP_DATA_SEQ32:
|
||
|
if (req + 4 > req_end)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET32(aidlen, req);
|
||
|
break;
|
||
|
}
|
||
|
if (aidlen <= 0)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
aidptr = req;
|
||
|
req += aidlen;
|
||
|
|
||
|
/* Get ContinuationState */
|
||
|
if (req + 1 > req_end)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET8(cslen, req);
|
||
|
if (cslen != 0) {
|
||
|
if (cslen != 2 || req_end - req != 2)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET16(cs, req);
|
||
|
} else
|
||
|
cs = 0;
|
||
|
|
||
|
/* Process the request. First, check continuation state */
|
||
|
if (srv->fdidx[fd].rsp_cs != cs)
|
||
|
return (SDP_ERROR_CODE_INVALID_CONTINUATION_STATE);
|
||
|
if (srv->fdidx[fd].rsp_size > 0)
|
||
|
return (0);
|
||
|
|
||
|
/*
|
||
|
* Service Search Attribute Response format
|
||
|
*
|
||
|
* value16 - 2 bytes AttributeListByteCount (not incl.)
|
||
|
* seq8 len16 - 3 bytes
|
||
|
* attr list - 3+ bytes AttributeLists
|
||
|
* [ attr list ]
|
||
|
*/
|
||
|
|
||
|
ptr = rsp + 3;
|
||
|
|
||
|
while (ssplen > 0) {
|
||
|
SDP_GET8(type, sspptr);
|
||
|
ssplen --;
|
||
|
|
||
|
switch (type) {
|
||
|
case SDP_DATA_UUID16:
|
||
|
if (ssplen < 2)
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
|
||
|
SDP_GET16(uuid, sspptr);
|
||
|
ssplen -= 2;
|
||
|
break;
|
||
|
|
||
|
case SDP_DATA_UUID32: /* XXX FIXME */
|
||
|
case SDP_DATA_UUID128: /* XXX FIXME */
|
||
|
default:
|
||
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
||
|
/* NOT REACHED */
|
||
|
}
|
||
|
|
||
|
for (provider = provider_get_first();
|
||
|
provider != NULL;
|
||
|
provider = provider_get_next(provider)) {
|
||
|
if (!provider_match_bdaddr(provider, &srv->req_sa.l2cap_bdaddr))
|
||
|
continue;
|
||
|
|
||
|
if (provider->profile->uuid != uuid &&
|
||
|
SDP_SERVICE_CLASS_PUBLIC_BROWSE_GROUP != uuid)
|
||
|
continue;
|
||
|
|
||
|
cs = server_prepare_attr_list(provider,
|
||
|
aidptr, aidptr + aidlen, ptr, rsp_end);
|
||
|
if (cs < 0)
|
||
|
return (SDP_ERROR_CODE_INSUFFICIENT_RESOURCES);
|
||
|
|
||
|
ptr += cs;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Set reply size (not counting PDU header and continuation state) */
|
||
|
srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t) - 2;
|
||
|
if (srv->fdidx[fd].rsp_limit > rsp_limit)
|
||
|
srv->fdidx[fd].rsp_limit = rsp_limit;
|
||
|
|
||
|
srv->fdidx[fd].rsp_size = ptr - rsp;
|
||
|
srv->fdidx[fd].rsp_cs = 0;
|
||
|
|
||
|
/* Fix AttributeLists sequence header */
|
||
|
ptr = rsp;
|
||
|
SDP_PUT8(SDP_DATA_SEQ16, ptr);
|
||
|
SDP_PUT16(srv->fdidx[fd].rsp_size - 3, ptr);
|
||
|
|
||
|
return (0);
|
||
|
}
|
||
|
|