Apple-2-Tools/ciderpress
1
0
Fork 0
mirror of https://github.com/fadden/ciderpress.git synced 2024-11-26 17:49:21 +00:00
Code Issues Projects Releases Wiki Activity
1a26be65e7
ciderpress/diskimg/DiskImgDetail.h
Andy McFadden aa3145856c Use types with explicit sizes 
Focusing on the diskimg library this time, which deals with a lot of
filesystem structures that have specific widths.

This is still a bit lax in places, e.g. using "long" for lengths.
Should either specify a bit width or use di_off_t.

Also, added "override" keyword where appropriate.

Also, bumped library version to 5.0.0.
2014-11-24 15:57:25 -08:00

3233 lines
118 KiB
C++
Raw Blame History

/*
* CiderPress
* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
* See the file LICENSE for distribution terms.
*/
/*
* Sub-classes of the base classes defined in DiskImg.h.
*
* Most applications will not need to include this file, because the
* polymorphic interfaces do everything they need. If something needs to
* examine the actual directory structure of a file, it can do so through
* these declarations.
*/
#ifndef DISKIMG_DISKIMGDETAIL_H
#define DISKIMG_DISKIMGDETAIL_H
#include "../nufxlib/NufxLib.h"
#include "../zlib/zlib.h"
#include "DiskImg.h"
#ifndef EXCISE_GPL_CODE
# include "libhfs/hfs.h"
#endif
namespace DiskImgLib {
/*
* ===========================================================================
* Outer wrappers
* ===========================================================================
*/
/*
* Outer wrapper class, representing a compression utility or archive
* format that must be stripped away so we can get to the Apple II stuff.
*
* Outer wrappers usually have a filename embedded in them, representing
* the original name of the file. We want to use the extension from this
* name when evaluating the file contents. Usually.
*/
class OuterWrapper {
public:
OuterWrapper(void) {}
virtual ~OuterWrapper(void) {}
// all sub-classes should have one of these
//static DIError Test(GenericFD* pGFD, long outerLength);
// open the file and prepare to access it; fills out return values
// NOTE: pGFD must be a GFDFile.
virtual DIError Load(GenericFD* pOuterGFD, di_off_t outerLength, bool readOnly,
di_off_t* pWrapperLength, GenericFD** ppWrapperGFD) = 0;
virtual DIError Save(GenericFD* pOuterGFD, GenericFD* pWrapperGFD,
di_off_t wrapperLength) = 0;
// set on recoverable errors, like a CRC failure
virtual bool IsDamaged(void) const = 0;
// indicate that we don't have a "fast" flush
virtual bool HasFastFlush(void) const { return false; }
virtual const char* GetExtension(void) const = 0;
private:
OuterWrapper& operator=(const OuterWrapper&);
OuterWrapper(const OuterWrapper&);
};
class OuterGzip : public OuterWrapper {
public:
OuterGzip(void) { fWrapperDamaged = false; }
virtual ~OuterGzip(void) {}
static DIError Test(GenericFD* pGFD, di_off_t outerLength);
virtual DIError Load(GenericFD* pGFD, di_off_t outerLength, bool readOnly,
di_off_t* pTotalLength, GenericFD** ppNewGFD) override;
virtual DIError Save(GenericFD* pOuterGFD, GenericFD* pWrapperGFD,
di_off_t wrapperLength) override;
virtual bool IsDamaged(void) const override { return fWrapperDamaged; }
virtual const char* GetExtension(void) const override { return NULL; }
private:
DIError ExtractGzipImage(gzFile gzfp, char** pBuf, di_off_t* pLength);
DIError CloseGzip(void);
// Largest possible ProDOS volume; quite a bit to hold in RAM. Add a
// little extra for .hdv format.
enum { kMaxUncompressedSize = kGzipMax +256 };
bool fWrapperDamaged;
};
class OuterZip : public OuterWrapper {
public:
OuterZip(void) : fStoredFileName(NULL), fExtension(NULL) {}
virtual ~OuterZip(void) {
delete[] fStoredFileName;
delete[] fExtension;
}
static DIError Test(GenericFD* pGFD, di_off_t outerLength);
virtual DIError Load(GenericFD* pGFD, di_off_t outerLength, bool readOnly,
di_off_t* pTotalLength, GenericFD** ppNewGFD) override;
virtual DIError Save(GenericFD* pOuterGFD, GenericFD* pWrapperGFD,
di_off_t wrapperLength) override;
virtual bool IsDamaged(void) const override { return false; }
virtual const char* GetExtension(void) const override { return fExtension; }
private:
class LocalFileHeader {
public:
LocalFileHeader(void) :
fVersionToExtract(0),
fGPBitFlag(0),
fCompressionMethod(0),
fLastModFileTime(0),
fLastModFileDate(0),
fCRC32(0),
fCompressedSize(0),
fUncompressedSize(0),
fFileNameLength(0),
fExtraFieldLength(0),
fFileName(NULL)
{}
virtual ~LocalFileHeader(void) { delete[] fFileName; }
DIError Read(GenericFD* pGFD);
DIError Write(GenericFD* pGFD);
void SetFileName(const char* name);
// uint32_t fSignature;
uint16_t fVersionToExtract;
uint16_t fGPBitFlag;
uint16_t fCompressionMethod;
uint16_t fLastModFileTime;
uint16_t fLastModFileDate;
uint32_t fCRC32;
uint32_t fCompressedSize;
uint32_t fUncompressedSize;
uint16_t fFileNameLength;
uint16_t fExtraFieldLength;
uint8_t* fFileName;
// extra field
enum {
kSignature = 0x04034b50,
kLFHLen = 30, // LocalFileHdr len, excl. var fields
};
void Dump(void) const;
};
class CentralDirEntry {
public:
CentralDirEntry(void) :
fVersionMadeBy(0),
fVersionToExtract(0),
fGPBitFlag(0),
fCompressionMethod(0),
fLastModFileTime(0),
fLastModFileDate(0),
fCRC32(0),
fCompressedSize(0),
fUncompressedSize(0),
fFileNameLength(0),
fExtraFieldLength(0),
fFileCommentLength(0),
fDiskNumberStart(0),
fInternalAttrs(0),
fExternalAttrs(0),
fLocalHeaderRelOffset(0),
fFileName(NULL),
fFileComment(NULL)
{}
virtual ~CentralDirEntry(void) {
delete[] fFileName;
delete[] fFileComment;
}
DIError Read(GenericFD* pGFD);
DIError Write(GenericFD* pGFD);
void SetFileName(const char* name);
// uint32_t fSignature;
uint16_t fVersionMadeBy;
uint16_t fVersionToExtract;
uint16_t fGPBitFlag;
uint16_t fCompressionMethod;
uint16_t fLastModFileTime;
uint16_t fLastModFileDate;
uint32_t fCRC32;
uint32_t fCompressedSize;
uint32_t fUncompressedSize;
uint16_t fFileNameLength;
uint16_t fExtraFieldLength;
uint16_t fFileCommentLength;
uint16_t fDiskNumberStart;
uint16_t fInternalAttrs;
uint32_t fExternalAttrs;
uint32_t fLocalHeaderRelOffset;
uint8_t* fFileName;
// extra field
uint8_t* fFileComment; // alloc with new[]
void Dump(void) const;
enum {
kSignature = 0x02014b50,
kCDELen = 46, // CentralDirEnt len, excl. var fields
};
};
class EndOfCentralDir {
public:
EndOfCentralDir(void) :
fDiskNumber(0),
fDiskWithCentralDir(0),
fNumEntries(0),
fTotalNumEntries(0),
fCentralDirSize(0),
fCentralDirOffset(0),
fCommentLen(0)
{}
virtual ~EndOfCentralDir(void) {}
DIError ReadBuf(const uint8_t* buf, int len);
DIError Write(GenericFD* pGFD);
// uint32_t fSignature;
uint16_t fDiskNumber;
uint16_t fDiskWithCentralDir;
uint16_t fNumEntries;
uint16_t fTotalNumEntries;
uint32_t fCentralDirSize;
uint32_t fCentralDirOffset; // offset from first disk
uint16_t fCommentLen;
// archive comment
enum {
kSignature = 0x06054b50,
kEOCDLen = 22, // EndOfCentralDir len, excl. comment
};
void Dump(void) const;
};
enum {
kDataDescriptorSignature = 0x08074b50,
kMaxCommentLen = 65535, // longest possible in ushort
kMaxEOCDSearch = kMaxCommentLen + EndOfCentralDir::kEOCDLen,
kZipFssep = '/',
kDefaultVersion = 20,
kMaxUncompressedSize = kGzipMax +256,
};
enum {
kCompressStored = 0, // no compression
//kCompressShrunk = 1,
//kCompressImploded = 6,
kCompressDeflated = 8, // standard deflate
};
static DIError ReadCentralDir(GenericFD* pGFD, di_off_t outerLength,
CentralDirEntry* pDirEntry);
DIError ExtractZipEntry(GenericFD* pOuterGFD, CentralDirEntry* pCDE,
uint8_t** pBuf, di_off_t* pLength);
DIError InflateGFDToBuffer(GenericFD* pGFD, unsigned long compSize,
unsigned long uncompSize, uint8_t* buf);
DIError DeflateGFDToGFD(GenericFD* pDst, GenericFD* pSrc, di_off_t length,
di_off_t* pCompLength, uint32_t* pCRC);
private:
void SetExtension(const char* ext);
void SetStoredFileName(const char* name);
void GetMSDOSTime(uint16_t* pDate, uint16_t* pTime);
void DOSTime(time_t when, uint16_t* pDate, uint16_t* pTime);
char* fStoredFileName;
char* fExtension;
};
/*
* ===========================================================================
* Image wrappers
* ===========================================================================
*/
/*
* Image wrapper class, representing the format of the Windows files.
* Might be "raw" data, might be data with a header, might be a complex
* or compressed format that must be extracted to a buffer.
*/
class ImageWrapper {
public:
ImageWrapper(void) {}
virtual ~ImageWrapper(void) {}
// all sub-classes should have one of these
// static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
// open the file and prepare to access it; fills out return values
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) = 0;
// fill out the wrapper, using the specified parameters
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) = 0;
// push altered data to the wrapper GFD
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) = 0;
// set the storage name (used by some formats)
virtual void SetStorageName(const char* name) {
// default implementation
assert(false);
}
// indicate that we have a "fast" flush
virtual bool HasFastFlush(void) const = 0;
// set by "Prep" on recoverable errors, like a CRC failure, for some fmts
virtual bool IsDamaged(void) const { return false; }
// if this wrapper format includes a file comment, return it
//virtual const char* GetComment(void) const { return NULL; }
/*
* Some additional goodies required for accessing variable-length nibble
* tracks in TrackStar images. A default implementation is provided and
* used for everything but TrackStar.
*/
virtual int GetNibbleTrackLength(DiskImg::PhysicalFormat physical, int track) const
{
if (physical == DiskImg::kPhysicalFormatNib525_6656)
return kTrackLenNib525;
else if (physical == DiskImg::kPhysicalFormatNib525_6384)
return kTrackLenNb2525;
else {
assert(false);
return -1;
}
}
virtual void SetNibbleTrackLength(int track, int length) { /*do nothing*/ }
virtual int GetNibbleTrackOffset(DiskImg::PhysicalFormat physical, int track) const
{
if (physical == DiskImg::kPhysicalFormatNib525_6656 ||
physical == DiskImg::kPhysicalFormatNib525_6384)
{
/* fixed-length tracks */
return GetNibbleTrackLength(physical, 0) * track;
} else {
assert(false);
return -1;
}
}
// TrackStar images can have more, but otherwise all nibble images have 35
virtual int GetNibbleNumTracks(void) const
{
return kTrackCount525;
}
private:
ImageWrapper& operator=(const ImageWrapper&);
ImageWrapper(const ImageWrapper&);
};
class Wrapper2MG : public ImageWrapper {
public:
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return true; }
//virtual const char* GetComment(void) const { return NULL; }
// (need to hold TwoImgHeader in the struct, rather than as temp, or
// need to copy the comment out into Wrapper2MG storage e.g. StorageName)
};
class WrapperNuFX : public ImageWrapper {
public:
WrapperNuFX(void) : fpArchive(NULL), fThreadIdx(0), fStorageName(NULL),
fCompressType(kNuThreadFormatLZW2)
{}
virtual ~WrapperNuFX(void) { CloseNuFX(); delete[] fStorageName; }
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return false; }
void SetStorageName(const char* name) {
delete[] fStorageName;
if (name != NULL) {
fStorageName = new char[strlen(name)+1];
strcpy(fStorageName, name);
} else
fStorageName = NULL;
}
void SetCompressType(NuThreadFormat format) { fCompressType = format; }
private:
enum { kDefaultStorageFssep = ':' };
static NuResult ErrMsgHandler(NuArchive* pArchive, void* vErrorMessage);
static DIError OpenNuFX(const char* pathName, NuArchive** ppArchive,
NuThreadIdx* pThreadIdx, long* pLength, bool readOnly);
DIError GetNuFXDiskImage(NuArchive* pArchive, NuThreadIdx threadIdx,
long length, char** ppData);
static char* GenTempPath(const char* path);
DIError CloseNuFX(void);
void UNIXTimeToDateTime(const time_t* pWhen, NuDateTime *pDateTime);
NuArchive* fpArchive;
NuThreadIdx fThreadIdx;
char* fStorageName;
NuThreadFormat fCompressType;
};
class WrapperDiskCopy42 : public ImageWrapper {
public:
WrapperDiskCopy42(void) : fStorageName(NULL), fBadChecksum(false)
{}
virtual ~WrapperDiskCopy42(void) { delete[] fStorageName; }
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
void SetStorageName(const char* name) {
delete[] fStorageName;
if (name != NULL) {
fStorageName = new char[strlen(name)+1];
strcpy(fStorageName, name);
} else
fStorageName = NULL;
}
virtual bool HasFastFlush(void) const override { return false; }
virtual bool IsDamaged(void) const override { return fBadChecksum; }
private:
typedef struct DC42Header DC42Header;
static void DumpHeader(const DC42Header* pHeader);
void InitHeader(DC42Header* pHeader);
static int ReadHeader(GenericFD* pGFD, DC42Header* pHeader);
DIError WriteHeader(GenericFD* pGFD, const DC42Header* pHeader);
static DIError ComputeChecksum(GenericFD* pGFD,
uint32_t* pChecksum);
char* fStorageName;
bool fBadChecksum;
};
class WrapperDDD : public ImageWrapper {
public:
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return false; }
enum {
kMaxDDDZeroCount = 4, // 3 observed, 4 suspected
};
private:
class BitBuffer;
enum {
kNumTracks = 35,
kNumSectors = 16,
kSectorSize = 256,
kTrackLen = kNumSectors * kSectorSize,
};
static DIError CheckForRuns(GenericFD* pGFD);
static DIError Unpack(GenericFD* pGFD, GenericFD** ppNewGFD,
short* pDiskVolNum);
static DIError UnpackDisk(GenericFD* pGFD, GenericFD* pNewGFD,
short* pDiskVolNum);
static bool UnpackTrack(BitBuffer* pBitBuffer, uint8_t* trackBuf);
static DIError PackDisk(GenericFD* pSrcGFD, GenericFD* pWrapperGFD,
short diskVolNum);
static void PackTrack(const uint8_t* trackBuf, BitBuffer* pBitBuf);
static void ComputeFreqCounts(const uint8_t* trackBuf,
uint16_t* freqCounts);
static void ComputeFavorites(uint16_t* freqCounts,
uint8_t* favorites);
short fDiskVolumeNum;
};
class WrapperSim2eHDV : public ImageWrapper {
public:
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return true; }
};
class WrapperTrackStar : public ImageWrapper {
public:
enum {
kTrackStarNumTracks = 40,
kFileTrackStorageLen = 6656,
kMaxTrackLen = kFileTrackStorageLen - (128+1+2), // header + footer
kCommentFieldLen = 0x2e,
};
WrapperTrackStar(void) : fStorageName(NULL) {
memset(&fNibbleTrackInfo, 0, sizeof(fNibbleTrackInfo));
fNibbleTrackInfo.numTracks = -1;
}
virtual ~WrapperTrackStar(void) { delete[] fStorageName; }
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return false; }
virtual void SetStorageName(const char* name) override
{
delete[] fStorageName;
if (name != NULL) {
fStorageName = new char[strlen(name)+1];
strcpy(fStorageName, name);
} else
fStorageName = NULL;
}
private:
static DIError VerifyTrack(int track, const uint8_t* trackBuf);
DIError Unpack(GenericFD* pGFD, GenericFD** ppNewGFD);
DIError UnpackDisk(GenericFD* pGFD, GenericFD* pNewGFD);
int fImageTracks;
char* fStorageName;
/*
* Data structure for managing nibble images with variable-length tracks.
*/
typedef struct {
int numTracks; // should be 35 or 40
int length[kMaxNibbleTracks525];
int offset[kMaxNibbleTracks525];
} NibbleTrackInfo;
NibbleTrackInfo fNibbleTrackInfo; // count and lengths for variable formats
// nibble images can have variable-length data fields
virtual int GetNibbleTrackLength(DiskImg::PhysicalFormat physical, int track) const
{
assert(physical == DiskImg::kPhysicalFormatNib525_Var);
assert(fNibbleTrackInfo.numTracks > 0);
return fNibbleTrackInfo.length[track];
}
virtual void SetNibbleTrackLength(int track, int length);
#if 0
{
assert(track >= 0);
assert(length > 0 && length <= kMaxTrackLen);
assert(track < fNibbleTrackInfo.numTracks);
fNibbleTrackInfo.length[track] = length;
}
#endif
virtual int GetNibbleTrackOffset(DiskImg::PhysicalFormat physical, int track) const
{
assert(physical == DiskImg::kPhysicalFormatNib525_Var);
assert(fNibbleTrackInfo.numTracks > 0);
return fNibbleTrackInfo.offset[track];
}
virtual int GetNibbleNumTracks(void) const
{
return kTrackStarNumTracks;
}
};
class WrapperFDI : public ImageWrapper {
public:
WrapperFDI(void) {}
virtual ~WrapperFDI(void) {}
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return false; }
enum {
kSignatureLen = 27,
kCreatorLen = 30,
kCommentLen = 80,
};
private:
static const char* kFDIMagic;
/* what type of disk is this? */
typedef enum DiskType {
kDiskType8 = 0,
kDiskType525 = 1,
kDiskType35 = 2,
kDiskType3 = 3
} DiskType;
/*
* Contents of FDI header.
*/
typedef struct FDIHeader {
char signature[kSignatureLen+1];
char creator[kCreatorLen+1];
// CR + LF
char comment[kCommentLen+1];
// MS-DOS EOF
uint16_t version;
uint16_t lastTrack;
uint8_t lastHead;
uint8_t type; // DiskType enum
uint8_t rotSpeed;
uint8_t flags;
uint8_t tpi;
uint8_t headWidth;
uint16_t reserved;
// track descriptors follow, at byte 152
} FDIHeader;
/*
* Header for pulse-index streams track.
*/
typedef struct PulseIndexHeader {
long numPulses;
long avgStreamLen;
int avgStreamCompression;
long minStreamLen;
int minStreamCompression;
long maxStreamLen;
int maxStreamCompression;
long idxStreamLen;
int idxStreamCompression;
uint32_t* avgStream; // 4 bytes/pulse
uint32_t* minStream; // 4 bytes/pulse; optional
uint32_t* maxStream; // 4 bytes/pulse; optional
uint32_t* idxStream; // 2 bytes/pulse; optional?
} PulseIndexHeader;
enum {
kTrackDescrOffset = 152,
kMaxHeads = 2,
kMaxHeaderBlockTracks = 180, // max 90 double-sided cylinders
kMinHeaderLen = 512,
kMinVersion = 0x0200, // v2.0
kMaxNibbleTracks35 = 80, // 80 double-sided tracks
kNibbleBufLen = 10240, // max seems to be a little under 10K
kBitBufferSize = kNibbleBufLen + (kNibbleBufLen / 4),
kMaxSectors35 = 12, // max #of sectors per track
//kBytesPerSector35 = 512, // bytes per sector on 3.5" disk
kPulseStreamDataOffset = 16, // start of header to avg stream
kBitRate525 = 250000, // 250Kbits/sec
};
/* meaning of the two-bit compression format value */
typedef enum CompressedFormat {
kCompUncompressed = 0,
kCompHuffman = 1,
} CompressedFormat;
/* node in the Huffman tree */
typedef struct HuffNode {
uint16_t val;
struct HuffNode* left;
struct HuffNode* right;
} HuffNode;
/*
* Keep a copy of the header around while we work. None of the formats
* we're interested in have more than kMaxHeaderBlockTracks tracks in
* them, so we don't need anything beyond the initial 512-byte header.
*/
uint8_t fHeaderBuf[kMinHeaderLen];
static void UnpackHeader(const uint8_t* headerBuf, FDIHeader* hdr);
static void DumpHeader(const FDIHeader* pHdr);
DIError Unpack525(GenericFD* pGFD, GenericFD** ppNewGFD, int numCyls,
int numHeads);
DIError Unpack35(GenericFD* pGFD, GenericFD** ppNewGFD, int numCyls,
int numHeads, LinearBitmap** ppBadBlockMap);
DIError PackDisk(GenericFD* pSrcGFD, GenericFD* pWrapperGFD);
DIError UnpackDisk525(GenericFD* pGFD, GenericFD* pNewGFD, int numCyls,
int numHeads);
DIError UnpackDisk35(GenericFD* pGFD, GenericFD* pNewGFD, int numCyls,
int numHeads, LinearBitmap* pBadBlockMap);
void GetTrackInfo(int trk, int* pType, int* pLength256);
int BitRate35(int trk);
void FixBadNibbles(uint8_t* nibbleBuf, long nibbleLen);
bool DecodePulseTrack(const uint8_t* inputBuf, long inputLen,
int bitRate, uint8_t* nibbleBuf, long* pNibbleLen);
bool UncompressPulseStream(const uint8_t* inputBuf, long inputLen,
uint32_t* outputBuf, long numPulses, int format, int bytesPerPulse);
bool ExpandHuffman(const uint8_t* inputBuf, long inputLen,
uint32_t* outputBuf, long numPulses);
const uint8_t* HuffExtractTree(const uint8_t* inputBuf,
HuffNode* pNode, uint8_t* pBits, uint8_t* pBitMask);
const uint8_t* HuffExtractValues16(const uint8_t* inputBuf,
HuffNode* pNode);
const uint8_t* HuffExtractValues8(const uint8_t* inputBuf,
HuffNode* pNode);
void HuffFreeNodes(HuffNode* pNode);
uint32_t HuffSignExtend16(uint32_t val);
uint32_t HuffSignExtend8(uint32_t val);
bool ConvertPulseStreamsToNibbles(PulseIndexHeader* pHdr, int bitRate,
uint8_t* nibbleBuf, long* pNibbleLen);
bool ConvertPulsesToBits(const uint32_t* avgStream,
const uint32_t* minStream, const uint32_t* maxStream,
const uint32_t* idxStream, int numPulses, int maxIndex,
int indexOffset, uint32_t totalAvg, int bitRate,
uint8_t* outputBuf, int* pOutputLen);
int MyRand(void);
bool ConvertBitsToNibbles(const uint8_t* bitBuffer, int bitCount,
uint8_t* nibbleBuf, long* pNibbleLen);
int fImageTracks;
char* fStorageName;
/*
* Data structure for managing nibble images with variable-length tracks.
*/
typedef struct {
int numTracks; // expect 35 or 40 for 5.25"
int length[kMaxNibbleTracks525];
int offset[kMaxNibbleTracks525];
} NibbleTrackInfo;
NibbleTrackInfo fNibbleTrackInfo; // count and lengths for variable formats
// nibble images can have variable-length data fields
virtual int GetNibbleTrackLength(DiskImg::PhysicalFormat physical, int track) const
{
assert(physical == DiskImg::kPhysicalFormatNib525_Var);
assert(fNibbleTrackInfo.numTracks > 0);
return fNibbleTrackInfo.length[track];
}
virtual void SetNibbleTrackLength(int track, int length);
virtual int GetNibbleTrackOffset(DiskImg::PhysicalFormat physical, int track) const
{
assert(physical == DiskImg::kPhysicalFormatNib525_Var);
assert(fNibbleTrackInfo.numTracks > 0);
return fNibbleTrackInfo.offset[track];
}
virtual int GetNibbleNumTracks(void) const
{
return fNibbleTrackInfo.numTracks;
}
};
class WrapperUnadornedNibble : public ImageWrapper {
public:
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return true; }
};
class WrapperUnadornedSector : public ImageWrapper {
public:
static DIError Test(GenericFD* pGFD, di_off_t wrappedLength);
virtual DIError Prep(GenericFD* pGFD, di_off_t wrappedLength, bool readOnly,
di_off_t* pLength, DiskImg::PhysicalFormat* pPhysical,
DiskImg::SectorOrder* pOrder, short* pDiskVolNum,
LinearBitmap** ppBadBlockMap, GenericFD** ppNewGFD) override;
virtual DIError Create(di_off_t length, DiskImg::PhysicalFormat physical,
DiskImg::SectorOrder order, short dosVolumeNum, GenericFD* pWrapperGFD,
di_off_t* pWrappedLength, GenericFD** pDataFD) override;
virtual DIError Flush(GenericFD* pWrapperGFD, GenericFD* pDataGFD,
di_off_t dataLen, di_off_t* pWrappedLen) override;
virtual bool HasFastFlush(void) const override { return true; }
};
/*
* ===========================================================================
* Non-FS DiskFSs
* ===========================================================================
*/
/*
* A "raw" disk, i.e. no filesystem is known. Useful as a placeholder
* for applications that demand a DiskFS object even when the filesystem
* isn't known.
*/
class DISKIMG_API DiskFSUnknown : public DiskFS {
public:
DiskFSUnknown(void) : DiskFS() {
strcpy(fDiskVolumeName, "[Unknown]");
strcpy(fDiskVolumeID, "Unknown FS");
}
virtual ~DiskFSUnknown(void) {}
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) {
SetDiskImg(pImg);
return kDIErrNone;
}
virtual const char* GetVolumeName(void) const override { return fDiskVolumeName; }
virtual const char* GetVolumeID(void) const override { return fDiskVolumeID; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
// Use this if *something* is known about the filesystem, e.g. the
// partition type on a MacPart disk.
void SetVolumeInfo(const char* descr) {
if (strlen(descr) > kMaxVolumeName)
return;
fDiskVolumeName[0] = '[';
strcpy(fDiskVolumeName+1, descr);
strcat(fDiskVolumeName, "]");
strcpy(fDiskVolumeID, "Unknown FS - ");
strcat(fDiskVolumeID, descr);
}
private:
enum { kMaxVolumeName = 64 };
char fDiskVolumeName[kMaxVolumeName+3];
char fDiskVolumeID[kMaxVolumeName + 20];
};
/*
* Generic "container" DiskFS class. Contains some common functions shared
* among classes that are just containers for other filesystems. This class
* is not expected to be instantiated.
*
* TODO: create a common OpenSubVolume() function.
*/
class DISKIMG_API DiskFSContainer : public DiskFS {
public:
DiskFSContainer(void) : DiskFS() {}
virtual ~DiskFSContainer(void) {}
protected:
virtual const char* GetDebugName(void) = 0;
virtual DIError CreatePlaceholder(long startBlock, long numBlocks,
const char* partName, const char* partType,
DiskImg** ppNewImg, DiskFS** ppNewFS);
virtual void SetVolumeUsageMap(void);
};
/*
* UNIDOS disk, an 800K floppy with two 400K DOS 3.3 volumes on it.
*
* The disk itself has no files; instead, it has two embedded sub-volumes.
*/
class DISKIMG_API DiskFSUNIDOS : public DiskFSContainer {
public:
DiskFSUNIDOS(void) : DiskFSContainer() {}
virtual ~DiskFSUNIDOS(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
static DIError TestWideFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "[UNIDOS]"; }
virtual const char* GetVolumeID(void) const override { return "[UNIDOS]"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
virtual const char* GetDebugName(void) override { return "UNIDOS"; }
DIError Initialize(void);
DIError OpenSubVolume(int idx);
};
/*
* OzDOS disk, an 800K floppy with two 400K DOS 3.3 volumes on it. They
* put the files for disk 1 in the odd sectors and the files for disk 2
* in the even sectors (the top and bottom halves of a 512-byte block).
*
* The disk itself has no files; instead, it has two embedded sub-volumes.
* Because of the funky layout, we have to use the "sector pairing" feature
* of DiskImg to treat this like a DOS 3.3 disk.
*/
class DISKIMG_API DiskFSOzDOS : public DiskFSContainer {
public:
DiskFSOzDOS(void) : DiskFSContainer() {}
virtual ~DiskFSOzDOS(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "[OzDOS]"; }
virtual const char* GetVolumeID(void) const override { return "[OzDOS]"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
virtual const char* GetDebugName(void) override { return "OzDOS"; }
DIError Initialize(void);
DIError OpenSubVolume(int idx);
};
/*
* CFFA volume. A potentially very large volume with multiple partitions.
*
* This DiskFS is just a container that describes the position and sizes
* of the sub-volumes.
*/
class DISKIMG_API DiskFSCFFA : public DiskFSContainer {
public:
DiskFSCFFA(void) : DiskFSContainer() {}
virtual ~DiskFSCFFA(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "[CFFA]"; }
virtual const char* GetVolumeID(void) const override { return "[CFFA]"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
virtual const char* GetDebugName(void) override { return "CFFA"; }
static DIError TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder,
DiskImg::FSFormat* pFormatFound);
static DIError OpenSubVolume(DiskImg* pImg, long startBlock,
long numBlocks, bool scanOnly, DiskImg** ppNewImg, DiskFS** ppNewFS);
DIError Initialize(void);
DIError FindSubVolumes(void);
DIError AddVolumeSeries(int start, int count, long blocksPerVolume,
long& startBlock, long& totalBlocksLeft);
enum {
kMinInterestingBlocks = 65536 + 1024, // less than this, ignore
kEarlyVolExpectedSize = 65536, // 32MB in 512-byte blocks
kOneGB = 1024*1024*(1024/512), // 1GB in 512-byte blocks
};
};
/*
* Macintosh-style partitioned disk image.
*
* This DiskFS is just a container that describes the position and sizes
* of the sub-volumes.
*/
class DISKIMG_API DiskFSMacPart : public DiskFSContainer {
public:
DiskFSMacPart(void) : DiskFSContainer() {}
virtual ~DiskFSMacPart(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "[MacPartition]"; }
virtual const char* GetVolumeID(void) const override { return "[MacPartition]"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
virtual const char* GetDebugName(void) override { return "MacPart"; }
struct PartitionMap; // fwd
struct DriverDescriptorRecord; // fwd
static void UnpackDDR(const uint8_t* buf,
DriverDescriptorRecord* pDDR);
static void DumpDDR(const DriverDescriptorRecord* pDDR);
static void UnpackPartitionMap(const uint8_t* buf,
PartitionMap* pMap);
static void DumpPartitionMap(long block, const PartitionMap* pMap);
static DIError TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder);
DIError OpenSubVolume(const PartitionMap* pMap);
DIError Initialize(void);
DIError FindSubVolumes(void);
enum {
kMinInterestingBlocks = 2048, // less than this, ignore
kDDRSignature = 0x4552, // 'ER'
kPartitionSignature = 0x504d, // 'PM'
};
};
/*
* Partitioning for Joachim Lange's MicroDrive card.
*
* This DiskFS is just a container that describes the position and sizes
* of the sub-volumes.
*/
class DISKIMG_API DiskFSMicroDrive : public DiskFSContainer {
public:
DiskFSMicroDrive(void) : DiskFSContainer() {}
virtual ~DiskFSMicroDrive(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "[MicroDrive]"; }
virtual const char* GetVolumeID(void) const override { return "[MicroDrive]"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
virtual const char* GetDebugName(void) override { return "MicroDrive"; }
struct PartitionMap; // fwd
static void UnpackPartitionMap(const uint8_t* buf,
PartitionMap* pMap);
static void DumpPartitionMap(const PartitionMap* pMap);
static DIError TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder);
DIError OpenSubVolume(long startBlock, long numBlocks);
DIError OpenVol(int idx, long startBlock, long numBlocks);
DIError Initialize(void);
DIError FindSubVolumes(void);
enum {
kMinInterestingBlocks = 2048, // less than this, ignore
kPartitionSignature = 0xccca, // 'JL' in little-endian high-ASCII
};
};
/*
* Partitioning for Parsons Engineering FocusDrive card.
*
* This DiskFS is just a container that describes the position and sizes
* of the sub-volumes.
*/
class DISKIMG_API DiskFSFocusDrive : public DiskFSContainer {
public:
DiskFSFocusDrive(void) : DiskFSContainer() {}
virtual ~DiskFSFocusDrive(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "[FocusDrive]"; }
virtual const char* GetVolumeID(void) const override { return "[FocusDrive]"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
virtual const char* GetDebugName(void) override { return "FocusDrive"; }
struct PartitionMap; // fwd
static void UnpackPartitionMap(const uint8_t* buf,
const uint8_t* nameBuf, PartitionMap* pMap);
static void DumpPartitionMap(const PartitionMap* pMap);
static DIError TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder);
DIError OpenSubVolume(long startBlock, long numBlocks,
const char* name);
DIError OpenVol(int idx, long startBlock, long numBlocks,
const char* name);
DIError Initialize(void);
DIError FindSubVolumes(void);
enum {
kMinInterestingBlocks = 2048, // less than this, ignore
};
};
/*
* ===========================================================================
* DOS 3.2/3.3
* ===========================================================================
*/
class A2FileDOS;
/*
* DOS 3.2/3.3 disk.
*/
class DISKIMG_API DiskFSDOS33 : public DiskFS {
public:
DiskFSDOS33(void) : DiskFS() {
fVTOCLoaded = false;
fDiskIsGood = false;
}
virtual ~DiskFSDOS33(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize(initMode);
}
virtual DIError Format(DiskImg* pDiskImg, const char* volName) override;
virtual const char* GetVolumeName(void) const override { return fDiskVolumeName; }
virtual const char* GetVolumeID(void) const override { return fDiskVolumeID; }
virtual const char* GetBareVolumeName(void) const override {
// this is fragile -- skip over the "DOS" part, return 3 digits
assert(strlen(fDiskVolumeName) > 3);
return fDiskVolumeName+3;
}
virtual bool GetReadWriteSupported(void) const override { return true; }
virtual bool GetFSDamaged(void) const override { return !fDiskIsGood; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override;
virtual DIError NormalizePath(const char* path, char fssep,
char* normalizedBuf, int* pNormalizedBufLen) override;
virtual DIError CreateFile(const CreateParms* pParms, A2File** ppNewFile) override;
virtual DIError DeleteFile(A2File* pFile) override;
virtual DIError RenameFile(A2File* pFile, const char* newName) override;
virtual DIError SetFileInfo(A2File* pFile, long fileType, long auxType,
long accessFlags) override;
virtual DIError RenameVolume(const char* newName) override;
/*
* Unique to DOS 3.3 disks.
*/
int GetDiskVolumeNum(void) const { return fDiskVolumeNum; }
void SetDiskVolumeNum(int val);
static bool IsValidFileName(const char* name);
static bool IsValidVolumeName(const char* name);
// utility function
static void LowerASCII(uint8_t* buf, long len);
static void ReplaceFssep(char* str, char replacement);
enum {
kMinTracks = 17, // need to put the catalog track here
kMaxTracks = 50,
kMaxCatalogSectors = 64, // two tracks on a 32-sector disk
};
/* a T/S pair */
typedef struct TrackSector {
char track;
char sector;
} TrackSector;
friend class A2FDDOS; // for Write
private:
DIError Initialize(InitMode initMode);
DIError ReadVTOC(void);
void UpdateVolumeNum(void);
void DumpVTOC(void);
void SetSectorUsage(long track, long sector,
VolumeUsage::ChunkPurpose purpose);
void FixVolumeUsageMap(void);
DIError ReadCatalog(void);
DIError ProcessCatalogSector(int catTrack, int catSect,
const uint8_t* sctBuf);
DIError GetFileLengths(void);
DIError ComputeLength(A2FileDOS* pFile, const TrackSector* tsList,
int tsCount);
DIError TrimLastSectorUp(A2FileDOS* pFile, TrackSector lastTS);
void MarkFileUsage(A2FileDOS* pFile, TrackSector* tsList, int tsCount,
TrackSector* indexList, int indexCount);
//DIError TrimLastSectorDown(A2FileDOS* pFile, uint16_t* tsBuf,
// int maxZeroCount);
void DoNormalizePath(const char* name, char fssep, char* outBuf);
DIError MakeFileNameUnique(char* fileName);
DIError GetFreeCatalogEntry(TrackSector* pCatSect, int* pCatEntry,
uint8_t* sctBuf, A2FileDOS** ppPrevEntry);
void CreateDirEntry(uint8_t* sctBuf, int catEntry,
const char* fileName, TrackSector* pTSSect, uint8_t fileType,
int access);
void FreeTrackSectors(TrackSector* pList, int count);
bool CheckDiskIsGood(void);
DIError WriteDOSTracks(int sectPerTrack);
DIError ScanVolBitmap(void);
DIError LoadVolBitmap(void);
DIError SaveVolBitmap(void);
void FreeVolBitmap(void);
DIError AllocSector(TrackSector* pTS);
DIError CreateEmptyBlockMap(bool withDOS);
bool GetSectorUseEntry(long track, int sector) const;
void SetSectorUseEntry(long track, int sector, bool inUse);
inline uint32_t GetVTOCEntry(const uint8_t* pVTOC, long track) const;
// Largest interesting volume is 400K (50 tracks, 32 sectors), but
// we may be looking at it in 16-sector mode, so max tracks is 100.
enum {
kMaxInterestingTracks = 100,
kSectorSize = 256,
kDefaultVolumeNum = 254,
kMaxExtensionLen = 4, // used when normalizing; ".gif" is 4
};
// DOS track images, for initializing disk images
static const uint8_t gDOS33Tracks[];
static const uint8_t gDOS32Tracks[];
/* some fields from the VTOC */
int fFirstCatTrack;
int fFirstCatSector;
int fVTOCVolumeNumber;
int fVTOCNumTracks;
int fVTOCNumSectors;
/* private data */
int fDiskVolumeNum; // usually 254
char fDiskVolumeName[7]; // "DOS" + num, e.g. "DOS001", "DOS254"
char fDiskVolumeID[32]; // sizeof "DOS 3.3 Volume " +3 +1
uint8_t fVTOC[kSectorSize];
bool fVTOCLoaded;
/*
* There are some things we need to be careful of when reading the
* catalog track, like bad links and infinite loops. By storing a list
* of known good catalog sectors, we only have to handle that stuff once.
* The catalog doesn't grow or shrink, so this never needs to be updated.
*/
TrackSector fCatalogSectors[kMaxCatalogSectors];
bool fDiskIsGood;
};
/*
* File descriptor for an open DOS file.
*/
class DISKIMG_API A2FDDOS : public A2FileDescr {
public:
A2FDDOS(A2File* pFile) : A2FileDescr(pFile) {
fTSList = NULL;
fIndexList = NULL;
fOffset = 0;
fModified = false;
}
virtual ~A2FDDOS(void) {
delete[] fTSList;
delete[] fIndexList;
//fTSList = fIndexList = NULL;
}
//typedef DiskFSDOS33::TrackSector TrackSector;
friend class A2FileDOS;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
typedef DiskFSDOS33::TrackSector TrackSector;
TrackSector* fTSList; // T/S entries for data sectors
int fTSCount;
TrackSector* fIndexList; // T/S entries for T/S list sectors
int fIndexCount;
di_off_t fOffset; // current position in file
di_off_t fOpenEOF; // how big the file currently is
long fOpenSectorsUsed; // how many sectors it occupies
bool fModified; // if modified, update stuff on Close
void DumpTSList(void) const;
};
/*
* Holds DOS files. Works for DOS33, DOS32, and "wide" DOS implementations.
*
* Catalog contents are public so anyone who wants gory details of DOS 3.3
* stuff can poke at whatever they want. Anybody else can use the virtual
* interfaces to get standardized answers for things like file type.
*
* The embedded address and length fields found in Applesoft, Integer, and
* Binary files are quietly skipped over with the fDataOffset field when
* files are read.
*
* THOUGHT: have "get filename" and "get raw filename" interfaces? There
* are no directories, so maybe we don't care about "raw pathname"?? Might
* be better to always return the "raw" value and let the caller deal with
* things like high ASCII.
*/
class DISKIMG_API A2FileDOS : public A2File {
public:
A2FileDOS(DiskFS* pDiskFS);
virtual ~A2FileDOS(void);
// assorted constants
enum {
kMaxFileName = 30,
};
typedef enum {
kTypeUnknown = -1,
kTypeText = 0x00, // 'T'
kTypeInteger = 0x01, // 'I'
kTypeApplesoft = 0x02, // 'A'
kTypeBinary = 0x04, // 'B'
kTypeS = 0x08, // 'S'
kTypeReloc = 0x10, // 'R'
kTypeA = 0x20, // 'A'
kTypeB = 0x40, // 'B'
kTypeLocked = 0x80 // bitwise OR with previous values
} FileType;
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fFileName; }
virtual char GetFssep(void) const override { return '\0'; }
virtual long GetFileType(void) const override;
virtual long GetAuxType(void) const override { return fAuxType; }
virtual long GetAccess(void) const override;
virtual time_t GetCreateWhen(void) const override { return 0; }
virtual time_t GetModWhen(void) const override { return 0; }
virtual di_off_t GetDataLength(void) const override { return fLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fSparseLength; }
virtual di_off_t GetRsrcLength(void) const override { return -1; }
virtual di_off_t GetRsrcSparseLength(void) const override { return -1; }
virtual DIError Open(A2FileDescr** ppOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
void Dump(void) const;
typedef DiskFSDOS33::TrackSector TrackSector;
/*
* Contents of directory entry.
*
* We don't hold deleted or unused entries, so fTSListTrack is always
* valid.
*/
short fTSListTrack; // (could use TrackSector here)
short fTSListSector;
uint16_t fLengthInSectors;
bool fLocked;
char fFileName[kMaxFileName+1]; // "fixed" version
FileType fFileType;
TrackSector fCatTS; // track/sector for our catalog entry
int fCatEntryNum; // entry number within cat sector
// these are computed or determined from the file contents
uint16_t fAuxType; // addr for bin, etc.
short fDataOffset; // for 'A'/'B'/'I' with embedded len
di_off_t fLength; // file length, in bytes
di_off_t fSparseLength; // file length, factoring sparse out
void FixFilename(void);
DIError LoadTSList(TrackSector** pTSList, int* pTSCount,
TrackSector** pIndexList = NULL, int* pIndexCount = NULL);
static FileType ConvertFileType(long prodosType, di_off_t fileLen);
static bool IsValidType(long prodosType);
static void MakeDOSName(char* buf, const char* name);
static void TrimTrailingSpaces(char* filename);
private:
DIError ExtractTSPairs(const uint8_t* sctBuf, TrackSector* tsList,
int* pLastNonZero);
A2FDDOS* fpOpenFile;
};
/*
* ===========================================================================
* ProDOS
* ===========================================================================
*/
class A2FileProDOS;
/*
* ProDOS disk.
*
* THOUGHT: it would be undesirable for the CiderPress UI, but it would
* make things somewhat easier internally if we treated the volume dir
* like a subdirectory under which everything else sits, instead of special-
* casing it like we do. This is awkward because volume dirs have names
* under ProDOS, giving every pathname an extra component that they don't
* really need. We can never treat the volume dir purely as a subdir,
* because it can't expand beyond 51 files, but the storage_type in the
* header is sufficient to identify it as such (assuming the disk isn't
* broken). Certain operations, such as changing the file type or aux type,
* simply aren't possible on a volume dir, and deleting a volume dir doesn't
* make sense. So in some respects we simply trade one kind of special-case
* behavior for another.
*/
class DISKIMG_API DiskFSProDOS : public DiskFS {
public:
DiskFSProDOS(void) : fBitMapPointer(0), fTotalBlocks(0), fBlockUseMap(NULL)
{}
virtual ~DiskFSProDOS(void) {
if (fBlockUseMap != NULL) {
assert(false); // unexpected
delete[] fBlockUseMap;
}
}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize(initMode);
}
virtual DIError Format(DiskImg* pDiskImg, const char* volName) override;
virtual DIError NormalizePath(const char* path, char fssep,
char* normalizedBuf, int* pNormalizedBufLen) override;
virtual DIError CreateFile(const CreateParms* pParms,
A2File** ppNewFile) override;
virtual DIError DeleteFile(A2File* pFile) override;
virtual DIError RenameFile(A2File* pFile, const char* newName) override;
virtual DIError SetFileInfo(A2File* pFile, long fileType, long auxType,
long accessFlags) override;
virtual DIError RenameVolume(const char* newName) override;
// assorted constants
enum {
kMaxVolumeName = 15,
};
typedef uint32_t ProDate;
virtual const char* GetVolumeName(void) const override { return fVolumeName; }
virtual const char* GetVolumeID(void) const override { return fVolumeID; }
virtual const char* GetBareVolumeName(void) const override { return fVolumeName; }
virtual bool GetReadWriteSupported(void) const override { return true; }
virtual bool GetFSDamaged(void) const override { return !fDiskIsGood; }
virtual long GetFSNumBlocks(void) const override { return fTotalBlocks; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override;
//A2FileProDOS* GetVolDir(void) const { return fpVolDir; }
static bool IsValidFileName(const char* name);
static bool IsValidVolumeName(const char* name);
static uint16_t GenerateLowerCaseBits(const char* upperName,
const char* lowerName, bool forAppleWorks);
static void GenerateLowerCaseName(const char* upperName,
char* lowerNameNoTerm, uint16_t lcFlags, bool fromAppleWorks);
friend class A2FDProDOS;
private:
struct DirHeader;
enum { kMaxExtensionLen = 4 }; // used when normalizing; ".gif" is 4
DIError Initialize(InitMode initMode);
DIError LoadVolHeader(void);
void SetVolumeID(void);
void DumpVolHeader(void);
DIError ScanVolBitmap(void);
DIError LoadVolBitmap(void);
DIError SaveVolBitmap(void);
void FreeVolBitmap(void);
long AllocBlock(void);
int GetNumBitmapBlocks(void) const {
/* use fTotalBlocks rather than GetNumBlocks() */
assert(fTotalBlocks > 0);
const int kBitsPerBlock = 512 * 8;
int numBlocks = (fTotalBlocks + kBitsPerBlock-1) / kBitsPerBlock;
return numBlocks;
}
DIError CreateEmptyBlockMap(void);
bool GetBlockUseEntry(long block) const;
void SetBlockUseEntry(long block, bool inUse);
bool ScanForExtraEntries(void) const;
void SetBlockUsage(long block, VolumeUsage::ChunkPurpose purpose);
DIError GetDirHeader(const uint8_t* blkBuf, DirHeader* pHeader);
DIError RecursiveDirAdd(A2File* pParent, uint16_t dirBlock,
const char* basePath, int depth);
DIError SlurpEntries(A2File* pParent, const DirHeader* pHeader,
const uint8_t* blkBuf, bool skipFirst, int* pCount,
const char* basePath, uint16_t thisBlock, int depth);
DIError ReadExtendedInfo(A2FileProDOS* pFile);
DIError ScanFileUsage(void);
void ScanBlockList(long blockCount, uint16_t* blockList,
long indexCount, uint16_t* indexList, long* pSparseCount);
DIError ScanForSubVolumes(void);
DIError FindSubVolume(long blockStart, long blockCount,
DiskImg** ppDiskImg, DiskFS** ppDiskFS);
void MarkSubVolumeBlocks(long block, long count);
A2File* FindFileByKeyBlock(A2File* pStart, uint16_t keyBlock);
DIError AllocInitialFileStorage(const CreateParms* pParms,
const char* upperName, uint16_t dirBlock, int dirEntrySlot,
long* pKeyBlock, int* pBlocksUsed, int* pNewEOF);
DIError WriteBootBlocks(void);
DIError DoNormalizePath(const char* path, char fssep,
char** pNormalizedPath);
void UpperCaseName(char* upperName, const char* name);
bool CheckDiskIsGood(void);
DIError AllocDirEntry(A2FileDescr* pOpenSubdir, uint8_t** ppDir,
long* pDirLen, uint8_t** ppDirEntry, uint16_t* pDirKeyBlock,
int* pDirEntrySlot, uint16_t* pDirBlock);
uint8_t* GetPrevDirEntry(uint8_t* buf, uint8_t* ptr);
DIError MakeFileNameUnique(const uint8_t* dirBuf, long dirLen,
char* fileName);
bool NameExistsInDir(const uint8_t* dirBuf, long dirLen,
const char* fileName);
DIError FreeBlocks(long blockCount, uint16_t* blockList);
DIError RegeneratePathName(A2FileProDOS* pFile);
/* some items from the volume header */
char fVolumeName[kMaxVolumeName+1];
char fVolumeID[kMaxVolumeName + 16]; // add "ProDOS /"
uint8_t fAccess;
ProDate fCreateWhen;
ProDate fModWhen;
uint16_t fBitMapPointer;
uint16_t fTotalBlocks;
//uint16_t fPrevBlock;
//uint16_t fNextBlock;
//uint8_t fVersion;
//uint8_t fMinVersion;
//uint8_t fEntryLength;
//uint8_t fEntriesPerBlock;
uint16_t fVolDirFileCount;
// A2FileProDOS* fpVolDir; // a "fake" file entry for the volume dir
/*
* This is a working copy of the block use map from blocks 6+. It should
* be loaded when we're about to modify files on the disk and freed
* immediately afterward. The goal is to facilitate speedy updates to the
* bitmap without creating problems if the application decides to modify
* one of the bitmap blocks directly (e.g. with the disk sector editor).
* It should never be held across calls.
*/
uint8_t* fBlockUseMap;
/*
* Set this if the disk is "perfect". If it's not, we disallow write
* access for safety reasons.
*/
bool fDiskIsGood;
/* set if something fixes damage so CheckDiskIsGood can't see it */
bool fEarlyDamage;
};
/*
* File descriptor for an open ProDOS file.
*
* This only represents one fork.
*/
class DISKIMG_API A2FDProDOS : public A2FileDescr {
public:
A2FDProDOS(A2File* pFile) : A2FileDescr(pFile), fModified(false),
fBlockList(NULL), fOffset(0)
{}
virtual ~A2FDProDOS(void) {
delete[] fBlockList;
fBlockList = NULL;
}
friend class A2FileProDOS;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
void DumpBlockList(void) const;
private:
bool IsEmptyBlock(const uint8_t* blk);
DIError WriteDirectory(const void* buf, size_t len, size_t* pActual);
/* state for open files */
bool fModified;
long fBlockCount;
uint16_t* fBlockList;
di_off_t fOpenEOF; // current EOF
uint16_t fOpenBlocksUsed; // #of block used by open piece
int fOpenStorageType;
bool fOpenRsrcFork; // is this the resource fork?
di_off_t fOffset; // current file offset
};
/*
* Holds a ProDOS file.
*/
class DISKIMG_API A2FileProDOS : public A2File {
public:
A2FileProDOS(DiskFS* pDiskFS) : A2File(pDiskFS) {
fPathName = NULL;
fSparseDataEof = fSparseRsrcEof = -1;
fpOpenFile = NULL;
fParentDirBlock = 0;
fParentDirIdx = -1;
fpParent = NULL;
}
virtual ~A2FileProDOS(void) {
delete fpOpenFile;
delete[] fPathName;
}
typedef DiskFSProDOS::ProDate ProDate;
/* assorted constants */
enum {
kMaxFileName = 15,
kFssep = ':',
kInvalidBlockNum = 1, // boot block, can't be in file
kMaxBlocksPerIndex = 256,
};
/* ProDOS access permissions */
enum {
kAccessRead = 0x01,
kAccessWrite = 0x02,
kAccessInvisible = 0x04,
kAccessBackup = 0x20,
kAccessRename = 0x40,
kAccessDelete = 0x80
};
/* contents of a directory entry */
typedef struct DirEntry {
int storageType;
char fileName[kMaxFileName+1]; // shows lower case
uint8_t fileType;
uint16_t keyPointer;
uint16_t blocksUsed;
uint32_t eof;
ProDate createWhen;
uint8_t version;
uint8_t minVersion;
uint8_t access;
uint16_t auxType;
ProDate modWhen;
uint16_t headerPointer;
} DirEntry;
typedef struct ExtendedInfo {
uint8_t storageType;
uint16_t keyBlock;
uint16_t blocksUsed;
uint32_t eof;
} ExtendedInfo;
typedef enum StorageType {
kStorageDeleted = 0, /* indicates deleted file */
kStorageSeedling = 1, /* <= 512 bytes */
kStorageSapling = 2, /* < 128KB */
kStorageTree = 3, /* < 16MB */
kStoragePascalVolume = 4, /* see ProDOS technote 25 */
kStorageExtended = 5, /* forked */
kStorageDirectory = 13,
kStorageSubdirHeader = 14,
kStorageVolumeDirHeader = 15,
} StorageType;
static bool IsRegularFile(int type) {
return (type == kStorageSeedling || type == kStorageSapling ||
type == kStorageTree);
}
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fDirEntry.fileName; }
virtual const char* GetPathName(void) const override { return fPathName; }
virtual char GetFssep(void) const override { return kFssep; }
virtual long GetFileType(void) const override { return fDirEntry.fileType; }
virtual long GetAuxType(void) const override { return fDirEntry.auxType; }
virtual long GetAccess(void) const override { return fDirEntry.access; }
virtual time_t GetCreateWhen(void) const override;
virtual time_t GetModWhen(void) const override;
virtual di_off_t GetDataLength(void) const override {
if (GetQuality() == kQualityDamaged)
return 0;
if (fDirEntry.storageType == kStorageExtended)
return fExtData.eof;
else
return fDirEntry.eof;
}
virtual di_off_t GetRsrcLength(void) const override {
if (fDirEntry.storageType == kStorageExtended) {
if (GetQuality() == kQualityDamaged)
return 0;
else
return fExtRsrc.eof;
} else
return -1;
}
virtual di_off_t GetDataSparseLength(void) const override {
if (GetQuality() == kQualityDamaged)
return 0;
else
return fSparseDataEof;
}
virtual di_off_t GetRsrcSparseLength(void) const override {
if (GetQuality() == kQualityDamaged)
return 0;
else
return fSparseRsrcEof;
}
virtual bool IsDirectory(void) const override {
return (fDirEntry.storageType == kStorageDirectory ||
fDirEntry.storageType == kStorageVolumeDirHeader);
}
virtual bool IsVolumeDirectory(void) const override {
return (fDirEntry.storageType == kStorageVolumeDirHeader);
}
virtual DIError Open(A2FileDescr** ppOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
virtual void SetParent(A2File* pParent) override { fpParent = pParent; }
virtual A2File* GetParent(void) const override { return fpParent; }
static char NameToLower(char ch);
static void InitDirEntry(DirEntry* pEntry, const uint8_t* entryBuf);
virtual void Dump(void) const override;
/* directory entry contents for this file */
DirEntry fDirEntry;
/* pointer to directory entry (update dir if file size or dates change) */
uint16_t fParentDirBlock; // directory block
int fParentDirIdx; // index in dir block
/* these are only valid if storageType == kStorageExtended */
ExtendedInfo fExtData;
ExtendedInfo fExtRsrc;
void SetPathName(const char* basePath, const char* fileName);
static time_t ConvertProDate(ProDate proDate);
static ProDate ConvertProDate(time_t unixDate);
/* returns "true" if AppleWorks aux type is used for lower-case name */
static bool UsesAppleWorksAuxType(uint8_t fileType) {
return (fileType >= 0x19 && fileType <= 0x1b);
}
#if 0
/* change fPathName; should only be used by DiskFS rename */
void SetPathName(const char* name) {
delete[] fPathName;
if (name == NULL) {
fPathName = NULL;
} else {
fPathName = new char[strlen(name)+1];
if (fPathName != NULL)
strcpy(fPathName, name);
}
}
#endif
DIError LoadBlockList(int storageType, uint16_t keyBlock,
long eof, long* pBlockCount, uint16_t** pBlockList,
long* pIndexBlockCount=NULL, uint16_t** pIndexBlockList=NULL);
DIError LoadDirectoryBlockList(uint16_t keyBlock,
long eof, long* pBlockCount, uint16_t** pBlockList);
/* fork lengths without sparseness */
di_off_t fSparseDataEof;
di_off_t fSparseRsrcEof;
private:
DIError LoadIndexBlock(uint16_t block, uint16_t* list,
int maxCount);
DIError ValidateBlockList(const uint16_t* list, long count);
char* fPathName; // full pathname to file on this volume
A2FDProDOS* fpOpenFile; // only one fork can be open at a time
A2File* fpParent;
};
/*
* ===========================================================================
* Pascal
* ===========================================================================
*/
/*
* Pascal disk.
*
* There is no allocation map or file index blocks, just a linear collection
* of files with contiguous blocks.
*/
class A2FilePascal;
class DISKIMG_API DiskFSPascal : public DiskFS {
public:
DiskFSPascal(void) : fDirectory(NULL) {}
virtual ~DiskFSPascal(void) {
if (fDirectory != NULL) {
assert(false); // unexpected
delete[] fDirectory;
}
}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual DIError Format(DiskImg* pDiskImg, const char* volName) override;
// assorted constants
enum {
kMaxVolumeName = 7,
kDirectoryEntryLen = 26,
};
typedef uint16_t PascalDate;
virtual const char* GetVolumeName(void) const override { return fVolumeName; }
virtual const char* GetVolumeID(void) const override { return fVolumeID; }
virtual const char* GetBareVolumeName(void) const override { return fVolumeName; }
virtual bool GetReadWriteSupported(void) const override { return true; }
virtual bool GetFSDamaged(void) const override { return !fDiskIsGood; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override;
virtual DIError NormalizePath(const char* path, char fssep,
char* normalizedBuf, int* pNormalizedBufLen) override;
virtual DIError CreateFile(const CreateParms* pParms, A2File** ppNewFile) override;
virtual DIError DeleteFile(A2File* pFile) override;
virtual DIError RenameFile(A2File* pFile, const char* newName) override;
virtual DIError SetFileInfo(A2File* pFile, long fileType, long auxType,
long accessFlags) override;
virtual DIError RenameVolume(const char* newName) override;
static bool IsValidVolumeName(const char* name);
static bool IsValidFileName(const char* name);
uint16_t GetTotalBlocks(void) const { return fTotalBlocks; }
friend class A2FDPascal;
private:
DIError Initialize(void);
DIError LoadVolHeader(void);
void SetVolumeID(void);
void DumpVolHeader(void);
DIError LoadCatalog(void);
DIError SaveCatalog(void);
void FreeCatalog(void);
DIError ProcessCatalog(void);
DIError ScanFileUsage(void);
void SetBlockUsage(long block, VolumeUsage::ChunkPurpose purpose);
DIError WriteBootBlocks(void);
bool CheckDiskIsGood(void);
void DoNormalizePath(const char* name, char fssep, char* outBuf);
DIError MakeFileNameUnique(char* fileName);
DIError FindLargestFreeArea(int *pPrevIdx, A2FilePascal** ppPrevFile);
uint8_t* FindDirEntry(A2FilePascal* pFile);
enum { kMaxExtensionLen = 5 }; // used when normalizing; ".code" is 4
/* some items from the volume header */
uint16_t fStartBlock; // first block of dir hdr; always 2
uint16_t fNextBlock; // i.e. first block with data
char fVolumeName[kMaxVolumeName+1];
char fVolumeID[kMaxVolumeName + 16]; // add "Pascal ___:"
uint16_t fTotalBlocks;
uint16_t fNumFiles;
PascalDate fAccessWhen; // PascalDate last access
PascalDate fDateSetWhen; // PascalDate last date setting
uint16_t fStuff1; //
uint16_t fStuff2; //
/* other goodies */
bool fDiskIsGood;
bool fEarlyDamage;
/*
* Pascal disks have one fixed-size directory. The contents aren't
* divided into blocks, which means you can't always edit an entry
* by loading a single block from disk and writing it back. Also,
* deleted entries are squeezed out, so if we delete an entry we
* have to reshuffle the entries below it.
*
* We want to keep the copy on disk synced up, so we don't hold on
* to this longer than necessary. Possibly less efficient that way;
* if it becomes a problem it's easy enough to change the behavior.
*/
uint8_t* fDirectory;
};
/*
* File descriptor for an open Pascal file.
*/
class DISKIMG_API A2FDPascal : public A2FileDescr {
public:
A2FDPascal(A2File* pFile) : A2FileDescr(pFile) {
fOffset = 0;
}
virtual ~A2FDPascal(void) {
/* nothing to clean up */
}
friend class A2FilePascal;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
di_off_t fOffset; // where we are
di_off_t fOpenEOF; // how big the file currently is
long fOpenBlocksUsed; // how many blocks it occupies
bool fModified; // if modified, update dir on Close
};
/*
* File on a Pascal disk.
*/
class DISKIMG_API A2FilePascal : public A2File {
public:
A2FilePascal(DiskFS* pDiskFS) : A2File(pDiskFS) {
fpOpenFile = NULL;
}
virtual ~A2FilePascal(void) {
/* this comes back and calls CloseDescr */
if (fpOpenFile != NULL)
fpOpenFile->Close();
}
typedef DiskFSPascal::PascalDate PascalDate;
// assorted constants
enum {
kMaxFileName = 15,
};
typedef enum FileType {
kTypeUntyped = 0, // NON
kTypeXdsk = 1, // BAD (bad blocks)
kTypeCode = 2, // PCD
kTypeText = 3, // PTX
kTypeInfo = 4, // ?
kTypeData = 5, // PDA
kTypeGraf = 6, // ?
kTypeFoto = 7, // FOT? (hires image)
kTypeSecurdir = 8 // ??
} FileType;
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fFileName; }
virtual char GetFssep(void) const override { return '\0'; }
virtual long GetFileType(void) const override;
virtual long GetAuxType(void) const override { return 0; }
virtual long GetAccess(void) const override { return DiskFS::kFileAccessUnlocked; }
virtual time_t GetCreateWhen(void) const override { return 0; }
virtual time_t GetModWhen(void) const override;
virtual di_off_t GetDataLength(void) const override { return fLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fLength; }
virtual di_off_t GetRsrcLength(void) const override { return -1; }
virtual di_off_t GetRsrcSparseLength(void) const override { return -1; }
virtual DIError Open(A2FileDescr** pOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
virtual void Dump(void) const override;
static time_t ConvertPascalDate(PascalDate pascalDate);
static A2FilePascal::PascalDate ConvertPascalDate(time_t unixDate);
static A2FilePascal::FileType ConvertFileType(long prodosType);
/* fields pulled out of directory block */
uint16_t fStartBlock;
uint16_t fNextBlock;
FileType fFileType;
char fFileName[kMaxFileName+1];
uint16_t fBytesRemaining;
PascalDate fModWhen;
/* derived fields */
di_off_t fLength;
/* note to self: don't try to store a directory offset here; they shift
every time you add or delete a file */
private:
A2FileDescr* fpOpenFile;
};
/*
* ===========================================================================
* CP/M
* ===========================================================================
*/
/*
* CP/M disk.
*
* We really ought to be using 1K blocks here, since that's the native
* CP/M format, but there's little value in making an exception for such
* a rarely used Apple II format.
*
* There is no allocation map or file index blocks, just a single 2K
* directory filled with files that have up to 16 1K blocks each. If
* a file is longer than 16K, a second entry with the identical name
* and user number is made. These "extents" may be sparse, so it's
* necessary to use the "records" field to determine the actual file length.
*/
class A2FileCPM;
class DISKIMG_API DiskFSCPM : public DiskFS {
public:
DiskFSCPM(void) : fDiskIsGood(false) {}
virtual ~DiskFSCPM(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return "CP/M"; }
virtual const char* GetVolumeID(void) const override { return "CP/M"; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return !fDiskIsGood; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
// assorted constants
enum {
kDirectoryEntryLen = 32,
kVolDirBlock = 24, // ProDOS block where volume dir starts
kDirFileNameLen = 11, // 8+3 without the '.'
kFullDirSize = 2048, // blocks 0 and 1
kDirEntryBlockCount = 16, // #of blocks held in dir slot
kNumDirEntries = kFullDirSize/kDirectoryEntryLen,
kExtentsInLowByte = 32,
kDirEntryFlagContinued = 0x8000, // "flags" word
};
// Contents of the raw 32-byte directory entry.
//
// From http://www.seasip.demon.co.uk/Cpm/format31.html
//
// UU F1 F2 F3 F4 F5 F6 F7 F8 T1 T2 T3 EX S1 S2 RC .FILENAMETYP....
// AL AL AL AL AL AL AL AL AL AL AL AL AL AL AL AL ................
//
// If the high bit of T1 is set, the file is read-only. If the high
// bit of T2 is set, the file is a "system" file.
//
// An entry with UU=0x20 indicates a CP/M 3.1 disk label entry.
// An entry with UU=0x21 indicates a time stamp entry (2.x or 3.x).
//
// Files larger than (1024 * 16) have multiple "extent" entries, i.e.
// entries with the same user number and file name.
typedef struct DirEntry {
uint8_t userNumber; // 0-15 or 0-31 (usually 0), e5=unused
uint8_t fileName[kDirFileNameLen+1];
uint16_t extent; // extent (EX + S2 * 32)
uint8_t S1; // Last Record Byte Count (app-specific)
uint8_t records; // #of 128-byte records in this extent
uint8_t blocks[kDirEntryBlockCount];
bool readOnly;
bool system;
bool badBlockList; // set if block list is damaged
} DirEntry;
static long CPMToProDOSBlock(long cpmBlock) {
return kVolDirBlock + (cpmBlock*2);
}
private:
DIError Initialize(void);
DIError ReadCatalog(void);
DIError ScanFileUsage(void);
void SetBlockUsage(long block, VolumeUsage::ChunkPurpose purpose);
void FormatName(char* dstBuf, const char* srcBuf);
DIError ComputeLength(A2FileCPM* pFile);
bool CheckDiskIsGood(void);
// the full set of raw dir entries
DirEntry fDirEntry[kNumDirEntries];
bool fDiskIsGood;
};
/*
* File descriptor for an open CP/M file.
*/
class DISKIMG_API A2FDCPM : public A2FileDescr {
public:
A2FDCPM(A2File* pFile) : A2FileDescr(pFile) {
//fOpen = false;
fBlockList = NULL;
}
virtual ~A2FDCPM(void) {
delete fBlockList;
fBlockList = NULL;
}
friend class A2FileCPM;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
//bool fOpen;
di_off_t fOffset;
long fBlockCount;
uint8_t* fBlockList;
};
/*
* File on a CP/M disk.
*/
class DISKIMG_API A2FileCPM : public A2File {
public:
typedef DiskFSCPM::DirEntry DirEntry;
A2FileCPM(DiskFS* pDiskFS, DirEntry* pDirEntry) :
A2File(pDiskFS), fpDirEntry(pDirEntry)
{
fDirIdx = -1;
fpOpenFile = NULL;
}
virtual ~A2FileCPM(void) {
delete fpOpenFile;
}
// assorted constants
enum {
kMaxFileName = 12, // 8+3 including '.'
};
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fFileName; }
virtual char GetFssep(void) const override { return '\0'; }
virtual long GetFileType(void) const override { return 0; }
virtual long GetAuxType(void) const override { return 0; }
virtual long GetAccess(void) const override {
if (fReadOnly)
return DiskFS::kFileAccessLocked;
else
return DiskFS::kFileAccessUnlocked;
}
virtual time_t GetCreateWhen(void) const override { return 0; }
virtual time_t GetModWhen(void) const override { return 0; }
virtual di_off_t GetDataLength(void) const override { return fLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fLength; }
virtual di_off_t GetRsrcLength(void) const override { return -1; }
virtual di_off_t GetRsrcSparseLength(void) const override { return -1; }
virtual DIError Open(A2FileDescr** ppOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
virtual void Dump(void) const override;
/* fields pulled out of directory block */
char fFileName[kMaxFileName+1];
bool fReadOnly;
/* derived fields */
di_off_t fLength;
int fDirIdx; // index into fDirEntry for part #1
DIError GetBlockList(long* pBlockCount, uint8_t* blockBuf) const;
private:
const DirEntry* fpDirEntry;
A2FileDescr* fpOpenFile;
};
/*
* ===========================================================================
* RDOS
* ===========================================================================
*/
/*
* RDOS disk.
*
* There is no allocation map or file index blocks, just a linear collection
* of files with contiguous sectors. Very similar to Pascal.
*
* The one interesting quirk is the "converted 13-sector disk" format, where
* only 13 of 16 sectors are actually used. The linear sector addressing
* must take that into account.
*/
class A2FileRDOS;
class DISKIMG_API DiskFSRDOS : public DiskFS {
public:
DiskFSRDOS(void) {}
virtual ~DiskFSRDOS(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
virtual const char* GetVolumeName(void) const override { return fVolumeName; }
virtual const char* GetVolumeID(void) const override { return fVolumeName; }
virtual const char* GetBareVolumeName(void) const override { return NULL; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
int GetOurSectPerTrack(void) const { return fOurSectPerTrack; }
private:
static DIError TestCommon(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
FSLeniency leniency, DiskImg::FSFormat* pFormatFound);
DIError Initialize(void);
DIError ReadCatalog(void);
DIError ScanFileUsage(void);
void SetSectorUsage(long track, long sector,
VolumeUsage::ChunkPurpose purpose);
char fVolumeName[10]; // e.g. "RDOS 3.3"
int fOurSectPerTrack;
};
/*
* File descriptor for an open RDOS file.
*/
class DISKIMG_API A2FDRDOS : public A2FileDescr {
public:
A2FDRDOS(A2File* pFile) : A2FileDescr(pFile) {
fOffset = 0;
}
virtual ~A2FDRDOS(void) {
/* nothing to clean up */
}
friend class A2FileRDOS;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
/* RDOS is unique in that it can put 13-sector disks on 16-sector tracks */
inline int GetOurSectPerTrack(void) const {
DiskFSRDOS* pDiskFS = (DiskFSRDOS*) fpFile->GetDiskFS();
return pDiskFS->GetOurSectPerTrack();
}
//bool fOpen;
di_off_t fOffset;
};
/*
* File on an RDOS disk.
*/
class DISKIMG_API A2FileRDOS : public A2File {
public:
A2FileRDOS(DiskFS* pDiskFS) : A2File(pDiskFS) {
//fOpen = false;
fpOpenFile = NULL;
}
virtual ~A2FileRDOS(void) {
delete fpOpenFile;
}
// assorted constants
enum {
kMaxFileName = 24,
};
typedef enum FileType {
kTypeUnknown = 0,
kTypeApplesoft, // 'A'
kTypeBinary, // 'B'
kTypeText, // 'T'
} FileType;
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fFileName; }
virtual char GetFssep(void) const override { return '\0'; }
virtual long GetFileType(void) const override;
virtual long GetAuxType(void) const override { return fLoadAddr; }
virtual long GetAccess(void) const override { return DiskFS::kFileAccessUnlocked; }
virtual time_t GetCreateWhen(void) const override { return 0; }
virtual time_t GetModWhen(void) const override { return 0; };
virtual di_off_t GetDataLength(void) const override { return fLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fLength; }
virtual di_off_t GetRsrcLength(void) const override { return -1; }
virtual di_off_t GetRsrcSparseLength(void) const override { return -1; }
virtual DIError Open(A2FileDescr** ppOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
void FixFilename(void);
virtual void Dump(void) const override;
/* fields pulled out of directory block */
char fFileName[kMaxFileName+1];
FileType fFileType;
uint16_t fNumSectors;
uint16_t fLoadAddr;
uint16_t fLength;
uint16_t fStartSector;
private:
void TrimTrailingSpaces(char* filename);
A2FileDescr* fpOpenFile;
};
/*
* ===========================================================================
* HFS
* ===========================================================================
*/
/*
* HFS disk.
*/
class A2FileHFS;
class DISKIMG_API DiskFSHFS : public DiskFS {
public:
DiskFSHFS(void) {
fLocalTimeOffset = -1;
fDiskIsGood = true;
#ifndef EXCISE_GPL_CODE
fHfsVol = NULL;
#endif
}
virtual ~DiskFSHFS(void) {
#ifndef EXCISE_GPL_CODE
hfs_callback_close(fHfsVol);
fHfsVol = (hfsvol*) 0xcdaaaacd;
#endif
}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize(initMode);
}
#ifndef EXCISE_GPL_CODE
/* these are optional, defined as no-ops in the parent class */
virtual DIError Format(DiskImg* pDiskImg, const char* volName) override;
virtual DIError NormalizePath(const char* path, char fssep,
char* normalizedBuf, int* pNormalizedBufLen) override;
virtual DIError CreateFile(const CreateParms* pParms, A2File** ppNewFile) override;
virtual DIError DeleteFile(A2File* pFile) override;
virtual DIError RenameFile(A2File* pFile, const char* newName) override;
virtual DIError SetFileInfo(A2File* pFile, long fileType, long auxType,
long accessFlags) override;
virtual DIError RenameVolume(const char* newName);
#endif
// assorted constants
enum {
kMaxVolumeName = 27,
kMaxExtensionLen = 4, // used when normalizing; ".gif" is 4
};
/* mandatory functions */
virtual const char* GetVolumeName(void) const override { return fVolumeName; }
virtual const char* GetVolumeID(void) const override { return fVolumeID; }
virtual const char* GetBareVolumeName(void) const override { return fVolumeName; }
virtual bool GetReadWriteSupported(void) const override { return true; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual long GetFSNumBlocks(void) const override { return fTotalBlocks; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override;
#ifndef EXCISE_GPL_CODE
hfsvol* GetHfsVol(void) const { return fHfsVol; }
#endif
// utility function, used by app
static bool IsValidVolumeName(const char* name);
static bool IsValidFileName(const char* name);
private:
enum {
// Macintosh 32-bit dates start in 1904, everybody else starts in
// 1970. Take the Mac date and adjust it 66 years plus 17 leap days.
// The annoying part is that HFS stores dates in local time, which
// means it's impossible to know absolutely when a file was modified.
// libhfs converts timestamps to the current time zone, so that a
// file written January 1st 2006 at 6pm in London will appear to have
// been written January 1st 2006 at 6pm in San Francisco if you
// happen to be sitting in California.
//
// This was fixed in HFS+, but we have to deal with it for now. The
// value below converts the date to local time in Greenwich; the
// current GMT offset and daylight saving time must be added to it.
//
// Curiously, the volume dates shown by Cmd-I on the volume on my
// Quadra are off by an hour, even though the file dates match.
kDateTimeOffset = (1970 - 1904) * 60 * 60 * 24 * 365 +
(60 * 60 * 24 * 17),
kExpectedMinBlocks = 1440, // ignore volumes under 720K
};
struct MasterDirBlock; // fwd
static void UnpackMDB(const uint8_t* buf, MasterDirBlock* pMDB);
static DIError TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder);
DIError Initialize(InitMode initMode);
DIError LoadVolHeader(void);
void SetVolumeID(void);
void DumpVolHeader(void);
void SetVolumeUsageMap(void);
#ifdef EXCISE_GPL_CODE
void CreateFakeFile(void);
#else
DIError RecursiveDirAdd(A2File* pParent, const char* basePath, int depth);
//void Sanitize(uint8_t* str);
DIError DoNormalizePath(const char* path, char fssep,
char** pNormalizedPath);
static int CompareMacFileNames(const char* str1, const char* str2);
DIError RegeneratePathName(A2FileHFS* pFile);
DIError MakeFileNameUnique(const char* pathName, char** pUniqueName);
/* libhfs stuff */
static unsigned long LibHFSCB(void* vThis, int op, unsigned long arg1,
void* arg2);
hfsvol* fHfsVol;
#endif
/* some items from the volume header */
char fVolumeName[kMaxVolumeName+1];
char fVolumeID[kMaxVolumeName + 8]; // add "HFS :"
uint32_t fTotalBlocks;
uint32_t fAllocationBlockSize;
uint32_t fNumAllocationBlocks;
uint32_t fCreatedDateTime;
uint32_t fModifiedDateTime;
uint32_t fNumFiles;
uint32_t fNumDirectories;
long fLocalTimeOffset;
bool fDiskIsGood;
};
/*
* File descriptor for an open HFS file.
*/
class DISKIMG_API A2FDHFS : public A2FileDescr {
public:
#ifdef EXCISE_GPL_CODE
A2FDHFS(A2File* pFile, void* unused)
: A2FileDescr(pFile), fOffset(0)
{}
#else
A2FDHFS(A2File* pFile, hfsfile* pHfsFile)
: A2FileDescr(pFile), fHfsFile(pHfsFile), fModified(false)
{}
#endif
virtual ~A2FDHFS(void) {
#ifndef EXCISE_GPL_CODE
if (fHfsFile != NULL)
hfs_close(fHfsFile);
#endif
}
friend class A2FileHFS;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
#ifdef EXCISE_GPL_CODE
di_off_t fOffset;
#else
hfsfile* fHfsFile;
bool fModified;
#endif
};
/*
* File on an HFS disk.
*/
class DISKIMG_API A2FileHFS : public A2File {
public:
A2FileHFS(DiskFS* pDiskFS) : A2File(pDiskFS) {
fPathName = NULL;
fpOpenFile = NULL;
#ifdef EXCISE_GPL_CODE
fFakeFileBuf = NULL;
#else
//fOrigPathName = NULL;
#endif
}
virtual ~A2FileHFS(void) {
delete fpOpenFile;
delete[] fPathName;
#ifdef EXCISE_GPL_CODE
delete[] fFakeFileBuf;
#else
//delete[] fOrigPathName;
#endif
}
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fPathName; }
virtual char GetFssep(void) const override { return kFssep; }
virtual long GetFileType(void) const override;
virtual long GetAuxType(void) const override;
virtual long GetAccess(void) const override { return fAccess; }
virtual time_t GetCreateWhen(void) const override { return fCreateWhen; }
virtual time_t GetModWhen(void) const override { return fModWhen; }
virtual di_off_t GetDataLength(void) const override { return fDataLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fDataLength; }
virtual di_off_t GetRsrcLength(void) const override { return fRsrcLength; }
virtual di_off_t GetRsrcSparseLength(void) const override { return fRsrcLength; }
virtual bool IsDirectory(void) const override { return fIsDir; }
virtual bool IsVolumeDirectory(void) const override { return fIsVolumeDir; }
virtual DIError Open(A2FileDescr** pOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
enum {
kMaxFileName = 31,
kFssep = ':',
kPdosType = 0x70646f73, // 'pdos'
};
void SetPathName(const char* basePath, const char* fileName);
virtual void Dump(void) const override;
#ifdef EXCISE_GPL_CODE
void SetFakeFile(void* buf, long len) {
assert(len > 0);
if (fFakeFileBuf != NULL)
delete[] fFakeFileBuf;
fFakeFileBuf = new char[len];
memcpy(fFakeFileBuf, buf, len);
fDataLength = len;
}
const void* GetFakeFileBuf(void) const { return fFakeFileBuf; }
#else
void InitEntry(const hfsdirent* dirEntry);
void SetOrigPathName(const char* pathName);
virtual void SetParent(A2File* pParent) override { fpParent = pParent; }
virtual A2File* GetParent(void) const override { return fpParent; }
char* GetLibHFSPathName(void) const;
static void ConvertTypeToHFS(long fileType, long auxType,
char* pType, char* pCreator);
#endif
bool fIsDir;
bool fIsVolumeDir;
long fType;
long fCreator;
char fFileName[kMaxFileName+1];
char* fPathName;
di_off_t fDataLength;
di_off_t fRsrcLength;
time_t fCreateWhen;
time_t fModWhen;
long fAccess;
private:
#ifdef EXCISE_GPL_CODE
char* fFakeFileBuf;
#else
//char* fOrigPathName;
A2File* fpParent;
#endif
A2FileDescr* fpOpenFile; // only one fork can be open at a time
};
/*
* ===========================================================================
* Gutenberg
* ===========================================================================
*/
class A2FileGutenberg;
/*
* Gutenberg disk.
*/
class DISKIMG_API DiskFSGutenberg : public DiskFS {
public:
DiskFSGutenberg(void) : DiskFS() {
fVTOCLoaded = false;
fDiskIsGood = false;
}
virtual ~DiskFSGutenberg(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize(initMode);
}
virtual const char* GetVolumeName(void) const override { return fDiskVolumeName; }
virtual const char* GetVolumeID(void) const override { return fDiskVolumeID; }
virtual const char* GetBareVolumeName(void) const override {
return fDiskVolumeName;
}
virtual bool GetReadWriteSupported(void) const override { return true; }
virtual bool GetFSDamaged(void) const override { return !fDiskIsGood; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override;
static bool IsValidFileName(const char* name);
static bool IsValidVolumeName(const char* name);
// utility function
static void LowerASCII(uint8_t* buf, long len);
static void ReplaceFssep(char* str, char replacement);
enum {
kMinTracks = 17, // need to put the catalog track here
kMaxTracks = 50,
kMaxCatalogSectors = 64, // two tracks on a 32-sector disk
};
/* a T/S pair */
typedef struct TrackSector {
char track;
char sector;
} TrackSector;
friend class A2FDGutenberg; // for Write
private:
DIError Initialize(InitMode initMode);
DIError ReadVTOC(void);
void UpdateVolumeNum(void);
void DumpVTOC(void);
void SetSectorUsage(long track, long sector,
VolumeUsage::ChunkPurpose purpose);
void FixVolumeUsageMap(void);
DIError ReadCatalog(void);
DIError ProcessCatalogSector(int catTrack, int catSect,
const uint8_t* sctBuf);
DIError GetFileLengths(void);
DIError ComputeLength(A2FileGutenberg* pFile, const TrackSector* tsList,
int tsCount);
DIError TrimLastSectorUp(A2FileGutenberg* pFile, TrackSector lastTS);
void MarkFileUsage(A2FileGutenberg* pFile, TrackSector* tsList, int tsCount,
TrackSector* indexList, int indexCount);
DIError MakeFileNameUnique(char* fileName);
DIError GetFreeCatalogEntry(TrackSector* pCatSect, int* pCatEntry,
uint8_t* sctBuf, A2FileGutenberg** ppPrevEntry);
void CreateDirEntry(uint8_t* sctBuf, int catEntry,
const char* fileName, TrackSector* pTSSect, uint8_t fileType,
int access);
void FreeTrackSectors(TrackSector* pList, int count);
bool CheckDiskIsGood(void);
DIError WriteDOSTracks(int sectPerTrack);
DIError ScanVolBitmap(void);
DIError LoadVolBitmap(void);
DIError SaveVolBitmap(void);
void FreeVolBitmap(void);
DIError AllocSector(TrackSector* pTS);
DIError CreateEmptyBlockMap(bool withDOS);
bool GetSectorUseEntry(long track, int sector) const;
void SetSectorUseEntry(long track, int sector, bool inUse);
inline uint32_t GetVTOCEntry(const uint8_t* pVTOC, long track) const;
// Largest interesting volume is 400K (50 tracks, 32 sectors), but
// we may be looking at it in 16-sector mode, so max tracks is 100.
enum {
kMaxInterestingTracks = 100,
kSectorSize = 256,
kDefaultVolumeNum = 254,
kMaxExtensionLen = 4, // used when normalizing; ".gif" is 4
};
/* some fields from the VTOC */
int fFirstCatTrack;
int fFirstCatSector;
int fVTOCVolumeNumber;
int fVTOCNumTracks;
int fVTOCNumSectors;
/* private data */
char fDiskVolumeName[10]; //
char fDiskVolumeID[11+12+1]; // sizeof "Gutenberg: " + 12 + null
uint8_t fVTOC[kSectorSize];
bool fVTOCLoaded;
/*
* There are some things we need to be careful of when reading the
* catalog track, like bad links and infinite loops. By storing a list
* of known good catalog sectors, we only have to handle that stuff once.
* The catalog doesn't grow or shrink, so this never needs to be updated.
*/
TrackSector fCatalogSectors[kMaxCatalogSectors];
bool fDiskIsGood;
};
/*
* File descriptor for an open Gutenberg file.
*/
class DISKIMG_API A2FDGutenberg : public A2FileDescr {
public:
A2FDGutenberg(A2File* pFile) : A2FileDescr(pFile) {
fOffset = 0;
fModified = false;
}
virtual ~A2FDGutenberg(void) {
}
friend class A2FileGutenberg;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
typedef DiskFSGutenberg::TrackSector TrackSector;
int fTSCount;
di_off_t fOffset; // current position in file
di_off_t fOpenEOF; // how big the file currently is
long fOpenSectorsUsed; // how many sectors it occupies
bool fModified; // if modified, update stuff on Close
void DumpTSList(void) const;
};
/*
* Holds Gutenberg files.
*
*/
class DISKIMG_API A2FileGutenberg : public A2File {
public:
A2FileGutenberg(DiskFS* pDiskFS);
virtual ~A2FileGutenberg(void);
// assorted constants
enum {
kMaxFileName = 12,
};
typedef enum {
kTypeText = 0x00, // 'T'
} FileType;
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fFileName; }
virtual char GetFssep(void) const override { return '\0'; }
virtual long GetFileType(void) const override;
virtual long GetAuxType(void) const override { return fAuxType; }
virtual long GetAccess(void) const override { return DiskFS::kFileAccessUnlocked; }
virtual time_t GetCreateWhen(void) const override { return 0; }
virtual time_t GetModWhen(void) const override { return 0; }
virtual di_off_t GetDataLength(void) const override { return fLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fSparseLength; }
virtual di_off_t GetRsrcLength(void) const override { return -1; }
virtual di_off_t GetRsrcSparseLength(void) const override { return -1; }
virtual DIError Open(A2FileDescr** ppOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
void Dump(void) const;
typedef DiskFSGutenberg::TrackSector TrackSector;
/*
* Contents of directory entry.
*
* We don't hold deleted or unused entries, so fTSListTrack is always
* valid.
*/
short fTrack; // (could use TrackSector here)
short fSector;
uint16_t fLengthInSectors;
bool fLocked;
char fFileName[kMaxFileName+1]; // "fixed" version
FileType fFileType;
TrackSector fCatTS; // track/sector for our catalog entry
int fCatEntryNum; // entry number within cat sector
// these are computed or determined from the file contents
uint16_t fAuxType; // addr for bin, etc.
short fDataOffset; // for 'A'/'B'/'I' with embedded len
di_off_t fLength; // file length, in bytes
di_off_t fSparseLength; // file length, factoring sparse out
void FixFilename(void);
static FileType ConvertFileType(long prodosType, di_off_t fileLen);
static bool IsValidType(long prodosType);
static void MakeDOSName(char* buf, const char* name);
static void TrimTrailingSpaces(char* filename);
private:
DIError ExtractTSPairs(const uint8_t* sctBuf, TrackSector* tsList,
int* pLastNonZero);
A2FDGutenberg* fpOpenFile;
};
/*
* ===========================================================================
* FAT (including FAT12, FAT16, and FAT32)
* ===========================================================================
*/
/*
* MS-DOS FAT disk.
*
* This is currently just the minimum necessary to properly recognize
* the disk.
*/
class A2FileFAT;
class DISKIMG_API DiskFSFAT : public DiskFS {
public:
DiskFSFAT(void) {}
virtual ~DiskFSFAT(void) {}
static DIError TestFS(DiskImg* pImg, DiskImg::SectorOrder* pOrder,
DiskImg::FSFormat* pFormat, FSLeniency leniency);
virtual DIError Initialize(DiskImg* pImg, InitMode initMode) override {
SetDiskImg(pImg);
return Initialize();
}
// assorted constants
enum {
kMaxVolumeName = 11,
};
virtual const char* GetVolumeName(void) const override { return fVolumeName; }
virtual const char* GetVolumeID(void) const override { return fVolumeID; }
virtual const char* GetBareVolumeName(void) const override { return fVolumeName; }
virtual bool GetReadWriteSupported(void) const override { return false; }
virtual bool GetFSDamaged(void) const override { return false; }
virtual long GetFSNumBlocks(void) const override { return fTotalBlocks; }
virtual DIError GetFreeSpaceCount(long* pTotalUnits, long* pFreeUnits,
int* pUnitSize) const override
{ return kDIErrNotSupported; }
private:
enum {
kExpectedMinBlocks = 720, // ignore volumes under 360K
};
struct MasterBootRecord; // fwd
struct BootSector;
static bool UnpackMBR(const uint8_t* buf, MasterBootRecord* pOut);
static bool UnpackBootSector(const uint8_t* buf, BootSector* pOut);
static DIError TestImage(DiskImg* pImg, DiskImg::SectorOrder imageOrder);
DIError Initialize(void);
DIError LoadVolHeader(void);
void DumpVolHeader(void);
void SetVolumeUsageMap(void);
void CreateFakeFile(void);
/* some items from the volume header */
char fVolumeName[kMaxVolumeName+1];
char fVolumeID[kMaxVolumeName + 8]; // add "FAT %s:"
uint32_t fTotalBlocks;
};
/*
* File descriptor for an open FAT file.
*/
class DISKIMG_API A2FDFAT : public A2FileDescr {
public:
A2FDFAT(A2File* pFile) : A2FileDescr(pFile) {
fOffset = 0;
}
virtual ~A2FDFAT(void) {
/* nothing to clean up */
}
friend class A2FileFAT;
virtual DIError Read(void* buf, size_t len, size_t* pActual = NULL) override;
virtual DIError Write(const void* buf, size_t len,
size_t* pActual = NULL) override;
virtual DIError Seek(di_off_t offset, DIWhence whence) override;
virtual di_off_t Tell(void) override;
virtual DIError Close(void) override;
virtual long GetSectorCount(void) const override;
virtual long GetBlockCount(void) const override;
virtual DIError GetStorage(long sectorIdx, long* pTrack,
long* pSector) const override;
virtual DIError GetStorage(long blockIdx, long* pBlock) const override;
private:
di_off_t fOffset;
};
/*
* File on a FAT disk.
*/
class DISKIMG_API A2FileFAT : public A2File {
public:
A2FileFAT(DiskFS* pDiskFS) : A2File(pDiskFS) {
fFakeFileBuf = NULL;
//fFakeFileLen = -1;
fpOpenFile = NULL;
}
virtual ~A2FileFAT(void) {
delete fpOpenFile;
delete[] fFakeFileBuf;
}
/*
* Implementations of standard interfaces.
*/
virtual const char* GetFileName(void) const override { return fFileName; }
virtual const char* GetPathName(void) const override { return fFileName; }
virtual char GetFssep(void) const override { return '\0'; }
virtual long GetFileType(void) const override { return 0; };
virtual long GetAuxType(void) const override { return 0; }
virtual long GetAccess(void) const override { return DiskFS::kFileAccessUnlocked; }
virtual time_t GetCreateWhen(void) const override { return 0; }
virtual time_t GetModWhen(void) const override { return 0; }
virtual di_off_t GetDataLength(void) const override { return fLength; }
virtual di_off_t GetDataSparseLength(void) const override { return fLength; }
virtual di_off_t GetRsrcLength(void) const override { return -1; }
virtual di_off_t GetRsrcSparseLength(void) const override { return -1; }
virtual DIError Open(A2FileDescr** pOpenFile, bool readOnly,
bool rsrcFork = false) override;
virtual void CloseDescr(A2FileDescr* pOpenFile) override {
assert(pOpenFile == fpOpenFile);
delete fpOpenFile;
fpOpenFile = NULL;
}
virtual bool IsFileOpen(void) const override { return fpOpenFile != NULL; }
enum { kMaxFileName = 31 };
virtual void Dump(void) const override;
void SetFakeFile(void* buf, long len) {
assert(len > 0);
if (fFakeFileBuf != NULL)
delete[] fFakeFileBuf;
fFakeFileBuf = new char[len];
memcpy(fFakeFileBuf, buf, len);
fLength = len;
}
const void* GetFakeFileBuf(void) const { return fFakeFileBuf; }
char fFileName[kMaxFileName+1];
di_off_t fLength;
private:
char* fFakeFileBuf;
//long fFakeFileLen;
A2FileDescr* fpOpenFile;
};
} // namespace DiskImgLib
#endif /*DISKIMG_DISKIMGDETAIL_H*/
Reference in New Issue View Git Blame Copy Permalink