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MDict: Fix checksum calculating for plain data block

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Timon Wong 2013-05-01 13:34:56 +08:00
parent 00a1ed5ddc
commit d57290f6bd
1 changed files with 10 additions and 3 deletions
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13
mdictparser.cc
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@ -247,13 +247,20 @@ bool MdictParser::parseCompressedBlock( size_t compressedBlockSize, const char *
quint32 type;
quint32 checksum;
type = qFromBigEndian<quint32>( ( const uchar * ) compressedBlockPtr );
checksum = qFromBigEndian<quint32>( ( const uchar * )compressedBlockPtr + sizeof( type ) );
checksum = qFromBigEndian<quint32>( ( const uchar * )compressedBlockPtr + sizeof( quint32 ) );
if ( type == 0x00000000 )
{
// No compression
checksum >>= 8;
if ( checksum != qFromBigEndian<quint16>( dataSize - 2 ) )
checksum &= 0xffff;
quint16 sum = 0;
for ( size_t i = 0; i < dataSize; i++ )
{
sum += dataPtr[i];
}
sum += 1;
if ( checksum != sum )
{
qWarning() << "MDict: parseCompressedBlock: plain: checksum not match";
return false;