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Fixed Bug #19154: ProDOS Order 2IMG crashing

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This commit is contained in:
tomch 2013-10-27 21:37:51 +00:00
parent bb0f4cabf1
commit 24b0f4080e
3 changed files with 40 additions and 10 deletions
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8
AppleWin/docs/History.txt
View File

@ -12,6 +12,14 @@ https://developer.berlios.de/feature/?func=addfeature&group_id=6117
Tom Charlesworth
tomch at users.berlios.de
Latest:
-------
Fixes:
. [ Bug #19154 ] ProDOS Order 2IMG crashing
1.23.2 - 14 Sep 2013
--------------------
Changes:

38
AppleWin/source/DiskImageHelper.cpp
View File

@ -596,7 +596,7 @@ public:
{
if ((*(LPWORD)(pImage+(loop << 9)+0x100) != ((loop == 5) ? 0 : 6-loop)) ||
(*(LPWORD)(pImage+(loop << 9)+0x102) != ((loop == 2) ? 0 : 8-loop)))
bMismatch = 1;
bMismatch = true;
}
if (!bMismatch)
return eMatch;
@ -647,8 +647,10 @@ public:
int loop = 4;
bool bMismatch = false;
while ((loop++ < 13) && !bMismatch)
{
if (*(pImage+0x11002+(loop << 8)) != 14-loop)
bMismatch = true;
}
if (!bMismatch)
return eMatch;
}
@ -1473,16 +1475,34 @@ CImageBase* CDiskImageHelper::Detect(LPBYTE pImage, DWORD dwSize, const TCHAR* p
eImageType ImageType = eImageUNKNOWN;
eImageType PossibleType = eImageUNKNOWN;
for (UINT uLoop=0; uLoop < GetNumImages() && ImageType == eImageUNKNOWN; uLoop++)
if (m_Result2IMG == eMatch)
{
if (*pszExt && _tcsstr(GetImage(uLoop)->GetRejectExtensions(), pszExt))
continue;
if (m_2IMGHelper.IsImageFormatDOS33())
ImageType = eImageDO;
else if (m_2IMGHelper.IsImageFormatProDOS())
ImageType = eImagePO;
eDetectResult Result = GetImage(uLoop)->Detect(pImage, dwSize, pszExt);
if (Result == eMatch)
ImageType = GetImage(uLoop)->GetType();
else if ((Result == ePossibleMatch) && (PossibleType == eImageUNKNOWN))
PossibleType = GetImage(uLoop)->GetType();
if (ImageType != eImageUNKNOWN)
{
CImageBase* pImageType = GetImage(ImageType);
if (!pImageType || !pImageType->IsValidImageSize(dwSize))
ImageType = eImageUNKNOWN;
}
}
if (ImageType == eImageUNKNOWN)
{
for (UINT uLoop=0; uLoop < GetNumImages() && ImageType == eImageUNKNOWN; uLoop++)
{
if (*pszExt && _tcsstr(GetImage(uLoop)->GetRejectExtensions(), pszExt))
continue;
eDetectResult Result = GetImage(uLoop)->Detect(pImage, dwSize, pszExt);
if (Result == eMatch)
ImageType = GetImage(uLoop)->GetType();
else if ((Result == ePossibleMatch) && (PossibleType == eImageUNKNOWN))
PossibleType = GetImage(uLoop)->GetType();
}
}
if (ImageType == eImageUNKNOWN)

4
AppleWin/source/DiskImageHelper.h
View File

@ -63,6 +63,7 @@ public:
virtual char* GetRejectExtensions(void) = 0;
void SetVolumeNumber(const BYTE uVolumeNumber) { m_uVolumeNumber = uVolumeNumber; }
bool IsValidImageSize(const DWORD uImageSize);
enum SectorOrder_e {eProDOSOrder, eDOSOrder, eSIMSYSTEMOrder, NUM_SECTOR_ORDERS};
@ -77,7 +78,6 @@ protected:
void DenibblizeTrack (LPBYTE trackimage, SectorOrder_e SectorOrder, int nibbles);
DWORD NibblizeTrack (LPBYTE trackimagebuffer, SectorOrder_e SectorOrder, int track);
void SkewTrack (const int nTrack, const int nNumNibbles, const LPBYTE pTrackImageBuffer);
bool IsValidImageSize(const DWORD uImageSize);
public:
static LPBYTE ms_pWorkBuffer;
@ -127,6 +127,8 @@ public:
virtual UINT GetMaxHdrSize(void) { return sizeof(Header2IMG); }
BYTE GetVolumeNumber(void);
bool IsLocked(void);
bool IsImageFormatDOS33(void) { return m_Hdr.ImageFormat == e2IMGFormatDOS33; }
bool IsImageFormatProDOS(void) { return m_Hdr.ImageFormat == e2IMGFormatProDOS; }
private:
static const UINT32 FormatID_2IMG = 'GMI2'; // '2IMG'