mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-18 10:35:55 +00:00
283 lines
7.3 KiB
C
283 lines
7.3 KiB
C
/*
|
|
* ssr.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: ssr.c,v 1.5 2004/01/13 01:54:39 max Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/uio.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <assert.h>
|
|
#include <bluetooth.h>
|
|
#include <errno.h>
|
|
#include <sdp.h>
|
|
#include <string.h>
|
|
#include "profile.h"
|
|
#include "provider.h"
|
|
#include "server.h"
|
|
#include "uuid-private.h"
|
|
|
|
/*
|
|
* Prepare SDP Service Search Response
|
|
*/
|
|
|
|
int32_t
|
|
server_prepare_service_search_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 *ptr = NULL;
|
|
provider_t *provider = NULL;
|
|
int32_t type, ssplen, rsp_limit, rcount, cslen, cs;
|
|
uint128_t uuid, puuid;
|
|
|
|
/*
|
|
* Minimal SDP Service Search Request
|
|
*
|
|
* seq8 len8 - 2 bytes
|
|
* uuid16 value16 - 3 bytes ServiceSearchPattern
|
|
* value16 - 2 bytes MaximumServiceRecordCount
|
|
* value8 - 1 byte ContinuationState
|
|
*/
|
|
|
|
if (req_end - req < 8)
|
|
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);
|
|
|
|
ptr = (uint8_t *) req + ssplen;
|
|
|
|
/* Get MaximumServiceRecordCount */
|
|
if (ptr + 2 > req_end)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
SDP_GET16(rsp_limit, ptr);
|
|
if (rsp_limit <= 0)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
/* Get ContinuationState */
|
|
if (ptr + 1 > req_end)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
SDP_GET8(cslen, ptr);
|
|
if (cslen != 0) {
|
|
if (cslen != 2 || req_end - ptr != 2)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
SDP_GET16(cs, ptr);
|
|
} 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 Response format
|
|
*
|
|
* value16 - 2 bytes TotalServiceRecordCount (not incl.)
|
|
* value16 - 2 bytes CurrentServiceRecordCount (not incl.)
|
|
* value32 - 4 bytes handle
|
|
* [ value32 ]
|
|
*
|
|
* Calculate how many record handles we can fit
|
|
* in our reply buffer and adjust rlimit.
|
|
*/
|
|
|
|
ptr = rsp;
|
|
rcount = (rsp_end - ptr) / 4;
|
|
if (rcount < rsp_limit)
|
|
rsp_limit = rcount;
|
|
|
|
/* Look for the record handles */
|
|
for (rcount = 0; ssplen > 0 && rcount < rsp_limit; ) {
|
|
SDP_GET8(type, req);
|
|
ssplen --;
|
|
|
|
switch (type) {
|
|
case SDP_DATA_UUID16:
|
|
if (ssplen < 2)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
memcpy(&uuid, &uuid_base, sizeof(uuid));
|
|
uuid.b[2] = *req ++;
|
|
uuid.b[3] = *req ++;
|
|
ssplen -= 2;
|
|
break;
|
|
|
|
case SDP_DATA_UUID32:
|
|
if (ssplen < 4)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
memcpy(&uuid, &uuid_base, sizeof(uuid));
|
|
uuid.b[0] = *req ++;
|
|
uuid.b[1] = *req ++;
|
|
uuid.b[2] = *req ++;
|
|
uuid.b[3] = *req ++;
|
|
ssplen -= 4;
|
|
break;
|
|
|
|
case SDP_DATA_UUID128:
|
|
if (ssplen < 16)
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
|
|
memcpy(uuid.b, req, 16);
|
|
req += 16;
|
|
ssplen -= 16;
|
|
break;
|
|
|
|
default:
|
|
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
|
|
/* NOT REACHED */
|
|
}
|
|
|
|
for (provider = provider_get_first();
|
|
provider != NULL && rcount < rsp_limit;
|
|
provider = provider_get_next(provider)) {
|
|
if (!provider_match_bdaddr(provider, &srv->req_sa.l2cap_bdaddr))
|
|
continue;
|
|
|
|
memcpy(&puuid, &uuid_base, sizeof(puuid));
|
|
puuid.b[2] = provider->profile->uuid >> 8;
|
|
puuid.b[3] = provider->profile->uuid;
|
|
|
|
if (memcmp(&uuid, &puuid, sizeof(uuid)) == 0 ||
|
|
memcmp(&uuid, &uuid_public_browse_group, sizeof(uuid)) == 0) {
|
|
SDP_PUT32(provider->handle, ptr);
|
|
rcount ++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Set reply size (not counting PDU header and continuation state) */
|
|
srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t) - 4;
|
|
srv->fdidx[fd].rsp_size = ptr - rsp;
|
|
srv->fdidx[fd].rsp_cs = 0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Send SDP Service Search Response
|
|
*/
|
|
|
|
int32_t
|
|
server_send_service_search_response(server_p srv, int32_t fd)
|
|
{
|
|
uint8_t *rsp = srv->fdidx[fd].rsp + srv->fdidx[fd].rsp_cs;
|
|
uint8_t *rsp_end = srv->fdidx[fd].rsp + srv->fdidx[fd].rsp_size;
|
|
|
|
struct iovec iov[4];
|
|
sdp_pdu_t pdu;
|
|
uint16_t rcounts[2];
|
|
uint8_t cs[3];
|
|
int32_t size;
|
|
|
|
/* First update continuation state (assume we will send all data) */
|
|
size = rsp_end - rsp;
|
|
srv->fdidx[fd].rsp_cs += size;
|
|
|
|
if (size + 1 > srv->fdidx[fd].rsp_limit) {
|
|
/*
|
|
* We need to split out response. Add 3 more bytes for the
|
|
* continuation state and move rsp_end and rsp_cs backwards.
|
|
*/
|
|
|
|
while ((rsp_end - rsp) + 3 > srv->fdidx[fd].rsp_limit) {
|
|
rsp_end -= 4;
|
|
srv->fdidx[fd].rsp_cs -= 4;
|
|
}
|
|
|
|
cs[0] = 2;
|
|
cs[1] = srv->fdidx[fd].rsp_cs >> 8;
|
|
cs[2] = srv->fdidx[fd].rsp_cs & 0xff;
|
|
} else
|
|
cs[0] = 0;
|
|
|
|
assert(rsp_end >= rsp);
|
|
|
|
rcounts[0] = srv->fdidx[fd].rsp_size / 4; /* TotalServiceRecordCount */
|
|
rcounts[1] = (rsp_end - rsp) / 4; /* CurrentServiceRecordCount */
|
|
|
|
pdu.pid = SDP_PDU_SERVICE_SEARCH_RESPONSE;
|
|
pdu.tid = ((sdp_pdu_p)(srv->req))->tid;
|
|
pdu.len = htons(sizeof(rcounts) + rcounts[1] * 4 + 1 + cs[0]);
|
|
|
|
rcounts[0] = htons(rcounts[0]);
|
|
rcounts[1] = htons(rcounts[1]);
|
|
|
|
iov[0].iov_base = &pdu;
|
|
iov[0].iov_len = sizeof(pdu);
|
|
|
|
iov[1].iov_base = rcounts;
|
|
iov[1].iov_len = sizeof(rcounts);
|
|
|
|
iov[2].iov_base = rsp;
|
|
iov[2].iov_len = rsp_end - rsp;
|
|
|
|
iov[3].iov_base = cs;
|
|
iov[3].iov_len = 1 + cs[0];
|
|
|
|
do {
|
|
size = writev(fd, (struct iovec const *) &iov, sizeof(iov)/sizeof(iov[0]));
|
|
} while (size < 0 && errno == EINTR);
|
|
|
|
/* Check if we have sent (or failed to sent) last response chunk */
|
|
if (srv->fdidx[fd].rsp_cs == srv->fdidx[fd].rsp_size) {
|
|
srv->fdidx[fd].rsp_cs = 0;
|
|
srv->fdidx[fd].rsp_size = 0;
|
|
srv->fdidx[fd].rsp_limit = 0;
|
|
}
|
|
|
|
return ((size < 0)? errno : 0);
|
|
}
|
|
|