diff options
Diffstat (limited to 'filter/source/msfilter/dffrecordheader.cxx')
-rw-r--r-- | filter/source/msfilter/dffrecordheader.cxx | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/filter/source/msfilter/dffrecordheader.cxx b/filter/source/msfilter/dffrecordheader.cxx new file mode 100644 index 000000000..c94bec53b --- /dev/null +++ b/filter/source/msfilter/dffrecordheader.cxx @@ -0,0 +1,43 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <filter/msfilter/dffrecordheader.hxx> + +bool ReadDffRecordHeader(SvStream& rIn, DffRecordHeader& rRec) +{ + rRec.nFilePos = rIn.Tell(); + sal_uInt16 nTmp(0); + rIn.ReadUInt16(nTmp); + rRec.nImpVerInst = nTmp; + rRec.nRecVer = sal::static_int_cast<sal_uInt8>(nTmp & 0x000F); + rRec.nRecInstance = nTmp >> 4; + rRec.nRecType = 0; + rIn.ReadUInt16(rRec.nRecType); + rRec.nRecLen = 0; + rIn.ReadUInt32(rRec.nRecLen); + + // preserving overflow, optimally we would check + // the record size against the parent header + if (rRec.nRecLen > (SAL_MAX_UINT32 - rRec.nFilePos)) + rIn.SetError(SVSTREAM_FILEFORMAT_ERROR); + + return rIn.good(); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |