1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
286 lines
7.4 KiB
C
286 lines
7.4 KiB
C
/*-
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* ssr.c
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*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ssr.c,v 1.5 2004/01/13 01:54:39 max Exp $
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* $FreeBSD$
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*/
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#include <sys/queue.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <assert.h>
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#define L2CAP_SOCKET_CHECKED
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#include <bluetooth.h>
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#include <errno.h>
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#include <sdp.h>
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#include <string.h>
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#include "profile.h"
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#include "provider.h"
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#include "server.h"
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#include "uuid-private.h"
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/*
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* Prepare SDP Service Search Response
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*/
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int32_t
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server_prepare_service_search_response(server_p srv, int32_t fd)
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{
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uint8_t const *req = srv->req + sizeof(sdp_pdu_t);
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uint8_t const *req_end = req + ((sdp_pdu_p)(srv->req))->len;
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uint8_t *rsp = srv->fdidx[fd].rsp;
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uint8_t const *rsp_end = rsp + NG_L2CAP_MTU_MAXIMUM;
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uint8_t *ptr = NULL;
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provider_t *provider = NULL;
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int32_t type, ssplen, rsp_limit, rcount, cslen, cs;
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uint128_t uuid, puuid;
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/*
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* Minimal SDP Service Search Request
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*
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* seq8 len8 - 2 bytes
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* uuid16 value16 - 3 bytes ServiceSearchPattern
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* value16 - 2 bytes MaximumServiceRecordCount
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* value8 - 1 byte ContinuationState
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*/
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if (req_end - req < 8)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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/* Get size of ServiceSearchPattern */
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ssplen = 0;
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SDP_GET8(type, req);
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switch (type) {
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case SDP_DATA_SEQ8:
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SDP_GET8(ssplen, req);
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break;
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case SDP_DATA_SEQ16:
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SDP_GET16(ssplen, req);
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break;
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case SDP_DATA_SEQ32:
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SDP_GET32(ssplen, req);
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break;
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}
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if (ssplen <= 0)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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ptr = (uint8_t *) req + ssplen;
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/* Get MaximumServiceRecordCount */
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if (ptr + 2 > req_end)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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SDP_GET16(rsp_limit, ptr);
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if (rsp_limit <= 0)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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/* Get ContinuationState */
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if (ptr + 1 > req_end)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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SDP_GET8(cslen, ptr);
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if (cslen != 0) {
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if (cslen != 2 || req_end - ptr != 2)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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SDP_GET16(cs, ptr);
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} else
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cs = 0;
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/* Process the request. First, check continuation state */
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if (srv->fdidx[fd].rsp_cs != cs)
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return (SDP_ERROR_CODE_INVALID_CONTINUATION_STATE);
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if (srv->fdidx[fd].rsp_size > 0)
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return (0);
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/*
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* Service Search Response format
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*
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* value16 - 2 bytes TotalServiceRecordCount (not incl.)
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* value16 - 2 bytes CurrentServiceRecordCount (not incl.)
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* value32 - 4 bytes handle
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* [ value32 ]
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*
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* Calculate how many record handles we can fit
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* in our reply buffer and adjust rlimit.
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*/
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ptr = rsp;
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rcount = (rsp_end - ptr) / 4;
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if (rcount < rsp_limit)
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rsp_limit = rcount;
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/* Look for the record handles */
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for (rcount = 0; ssplen > 0 && rcount < rsp_limit; ) {
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SDP_GET8(type, req);
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ssplen --;
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switch (type) {
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case SDP_DATA_UUID16:
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if (ssplen < 2)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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memcpy(&uuid, &uuid_base, sizeof(uuid));
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uuid.b[2] = *req ++;
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uuid.b[3] = *req ++;
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ssplen -= 2;
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break;
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case SDP_DATA_UUID32:
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if (ssplen < 4)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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memcpy(&uuid, &uuid_base, sizeof(uuid));
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uuid.b[0] = *req ++;
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uuid.b[1] = *req ++;
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uuid.b[2] = *req ++;
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uuid.b[3] = *req ++;
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ssplen -= 4;
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break;
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case SDP_DATA_UUID128:
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if (ssplen < 16)
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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memcpy(uuid.b, req, 16);
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req += 16;
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ssplen -= 16;
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break;
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default:
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return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
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/* NOT REACHED */
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}
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for (provider = provider_get_first();
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provider != NULL && rcount < rsp_limit;
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provider = provider_get_next(provider)) {
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if (!provider_match_bdaddr(provider, &srv->req_sa.l2cap_bdaddr))
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continue;
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memcpy(&puuid, &uuid_base, sizeof(puuid));
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puuid.b[2] = provider->profile->uuid >> 8;
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puuid.b[3] = provider->profile->uuid;
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if (memcmp(&uuid, &puuid, sizeof(uuid)) == 0 ||
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memcmp(&uuid, &uuid_public_browse_group, sizeof(uuid)) == 0) {
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SDP_PUT32(provider->handle, ptr);
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rcount ++;
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}
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}
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}
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/* Set reply size (not counting PDU header and continuation state) */
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srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t) - 4;
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srv->fdidx[fd].rsp_size = ptr - rsp;
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srv->fdidx[fd].rsp_cs = 0;
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return (0);
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}
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/*
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* Send SDP Service Search Response
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*/
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int32_t
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server_send_service_search_response(server_p srv, int32_t fd)
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{
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uint8_t *rsp = srv->fdidx[fd].rsp + srv->fdidx[fd].rsp_cs;
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uint8_t *rsp_end = srv->fdidx[fd].rsp + srv->fdidx[fd].rsp_size;
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struct iovec iov[4];
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sdp_pdu_t pdu;
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uint16_t rcounts[2];
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uint8_t cs[3];
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int32_t size;
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/* First update continuation state (assume we will send all data) */
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size = rsp_end - rsp;
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srv->fdidx[fd].rsp_cs += size;
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if (size + 1 > srv->fdidx[fd].rsp_limit) {
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/*
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* We need to split out response. Add 3 more bytes for the
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* continuation state and move rsp_end and rsp_cs backwards.
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*/
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while ((rsp_end - rsp) + 3 > srv->fdidx[fd].rsp_limit) {
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rsp_end -= 4;
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srv->fdidx[fd].rsp_cs -= 4;
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}
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cs[0] = 2;
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cs[1] = srv->fdidx[fd].rsp_cs >> 8;
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cs[2] = srv->fdidx[fd].rsp_cs & 0xff;
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} else
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cs[0] = 0;
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assert(rsp_end >= rsp);
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rcounts[0] = srv->fdidx[fd].rsp_size / 4; /* TotalServiceRecordCount */
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rcounts[1] = (rsp_end - rsp) / 4; /* CurrentServiceRecordCount */
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pdu.pid = SDP_PDU_SERVICE_SEARCH_RESPONSE;
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pdu.tid = ((sdp_pdu_p)(srv->req))->tid;
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pdu.len = htons(sizeof(rcounts) + rcounts[1] * 4 + 1 + cs[0]);
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rcounts[0] = htons(rcounts[0]);
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rcounts[1] = htons(rcounts[1]);
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iov[0].iov_base = &pdu;
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iov[0].iov_len = sizeof(pdu);
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iov[1].iov_base = rcounts;
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iov[1].iov_len = sizeof(rcounts);
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iov[2].iov_base = rsp;
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iov[2].iov_len = rsp_end - rsp;
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iov[3].iov_base = cs;
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iov[3].iov_len = 1 + cs[0];
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do {
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size = writev(fd, (struct iovec const *) &iov, sizeof(iov)/sizeof(iov[0]));
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} while (size < 0 && errno == EINTR);
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/* Check if we have sent (or failed to sent) last response chunk */
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if (srv->fdidx[fd].rsp_cs == srv->fdidx[fd].rsp_size) {
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srv->fdidx[fd].rsp_cs = 0;
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srv->fdidx[fd].rsp_size = 0;
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srv->fdidx[fd].rsp_limit = 0;
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}
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return ((size < 0)? errno : 0);
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}
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