Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <filter/msfilter/dffrecordheader.hxx>
21 :
22 0 : SvStream& ReadDffRecordHeader( SvStream& rIn, DffRecordHeader& rRec )
23 : {
24 0 : rRec.nFilePos = rIn.Tell();
25 0 : sal_uInt16 nTmp(0);
26 0 : rIn.ReadUInt16( nTmp );
27 0 : rRec.nImpVerInst = nTmp;
28 0 : rRec.nRecVer = sal::static_int_cast< sal_uInt8 >(nTmp & 0x000F);
29 0 : rRec.nRecInstance = nTmp >> 4;
30 0 : rIn.ReadUInt16( rRec.nRecType );
31 0 : rIn.ReadUInt32( rRec.nRecLen );
32 :
33 : // preserving overflow, optimally we would check
34 : // the record size against the parent header
35 0 : if ( rRec.nRecLen > ( SAL_MAX_UINT32 - rRec.nFilePos ) )
36 0 : rIn.SetError( SVSTREAM_FILEFORMAT_ERROR );
37 :
38 0 : return rIn;
39 : }
40 :
41 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|