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fix potential crash if QueryDosDevice fails, or returns more data than expected

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This commit is contained in:
Glenn Maynard
2005-12-24 02:37:06 +00:00
parent 5ce5dc5060
commit 33f7552be5
1 changed files with 11 additions and 2 deletions
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stepmania/src/arch/MemoryCard/MemoryCardDriverThreaded_Windows.cpp
+11 -2
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@@ -53,9 +53,18 @@ static bool IsFloppyDrive( const CString &sDrive )
{
char szBuf[1024];
QueryDosDevice( sDrive, szBuf, 1024 );
int iRet = QueryDosDevice( sDrive, szBuf, 1024 );
if( iRet == 0 )
{
LOG->Warn( werr_ssprintf(GetLastError(), "QueryDosDevice(%s)", sDrive.c_str()) );
return false;
}
char *p = szBuf;
// Make sure szBuf is terminated with two nulls. This only may be needed if the buffer filled.
szBuf[iRet-2] = 0;
szBuf[iRet-1] = 0;
const char *p = szBuf;
while( *p )
{
if( BeginsWith(p, "\\Device\\Floppy") )