mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-11-06 13:01:21 +00:00
718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
1771 lines
43 KiB
C
1771 lines
43 KiB
C
/* 7zArcIn.c -- 7z Input functions
|
|
2018-12-31 : Igor Pavlov : Public domain */
|
|
|
|
#include "Precomp.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "7z.h"
|
|
#include "7zBuf.h"
|
|
#include "7zCrc.h"
|
|
#include "CpuArch.h"
|
|
|
|
#define MY_ALLOC(T, p, size, alloc) { \
|
|
if ((p = (T *)ISzAlloc_Alloc(alloc, (size) * sizeof(T))) == NULL) return SZ_ERROR_MEM; }
|
|
|
|
#define MY_ALLOC_ZE(T, p, size, alloc) { if ((size) == 0) p = NULL; else MY_ALLOC(T, p, size, alloc) }
|
|
|
|
#define MY_ALLOC_AND_CPY(to, size, from, alloc) \
|
|
{ MY_ALLOC(Byte, to, size, alloc); memcpy(to, from, size); }
|
|
|
|
#define MY_ALLOC_ZE_AND_CPY(to, size, from, alloc) \
|
|
{ if ((size) == 0) to = NULL; else { MY_ALLOC_AND_CPY(to, size, from, alloc) } }
|
|
|
|
#define k7zMajorVersion 0
|
|
|
|
enum EIdEnum
|
|
{
|
|
k7zIdEnd,
|
|
k7zIdHeader,
|
|
k7zIdArchiveProperties,
|
|
k7zIdAdditionalStreamsInfo,
|
|
k7zIdMainStreamsInfo,
|
|
k7zIdFilesInfo,
|
|
k7zIdPackInfo,
|
|
k7zIdUnpackInfo,
|
|
k7zIdSubStreamsInfo,
|
|
k7zIdSize,
|
|
k7zIdCRC,
|
|
k7zIdFolder,
|
|
k7zIdCodersUnpackSize,
|
|
k7zIdNumUnpackStream,
|
|
k7zIdEmptyStream,
|
|
k7zIdEmptyFile,
|
|
k7zIdAnti,
|
|
k7zIdName,
|
|
k7zIdCTime,
|
|
k7zIdATime,
|
|
k7zIdMTime,
|
|
k7zIdWinAttrib,
|
|
k7zIdComment,
|
|
k7zIdEncodedHeader,
|
|
k7zIdStartPos,
|
|
k7zIdDummy
|
|
// k7zNtSecure,
|
|
// k7zParent,
|
|
// k7zIsReal
|
|
};
|
|
|
|
const Byte k7zSignature[k7zSignatureSize] = {'7', 'z', 0xBC, 0xAF, 0x27, 0x1C};
|
|
|
|
#define SzBitUi32s_Init(p) { (p)->Defs = NULL; (p)->Vals = NULL; }
|
|
|
|
static SRes SzBitUi32s_Alloc(CSzBitUi32s *p, size_t num, ISzAllocPtr alloc)
|
|
{
|
|
if (num == 0)
|
|
{
|
|
p->Defs = NULL;
|
|
p->Vals = NULL;
|
|
}
|
|
else
|
|
{
|
|
MY_ALLOC(Byte, p->Defs, (num + 7) >> 3, alloc);
|
|
MY_ALLOC(UInt32, p->Vals, num, alloc);
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
void SzBitUi32s_Free(CSzBitUi32s *p, ISzAllocPtr alloc)
|
|
{
|
|
ISzAlloc_Free(alloc, p->Defs); p->Defs = NULL;
|
|
ISzAlloc_Free(alloc, p->Vals); p->Vals = NULL;
|
|
}
|
|
|
|
#define SzBitUi64s_Init(p) { (p)->Defs = NULL; (p)->Vals = NULL; }
|
|
|
|
void SzBitUi64s_Free(CSzBitUi64s *p, ISzAllocPtr alloc)
|
|
{
|
|
ISzAlloc_Free(alloc, p->Defs); p->Defs = NULL;
|
|
ISzAlloc_Free(alloc, p->Vals); p->Vals = NULL;
|
|
}
|
|
|
|
|
|
static void SzAr_Init(CSzAr *p)
|
|
{
|
|
p->NumPackStreams = 0;
|
|
p->NumFolders = 0;
|
|
|
|
p->PackPositions = NULL;
|
|
SzBitUi32s_Init(&p->FolderCRCs);
|
|
|
|
p->FoCodersOffsets = NULL;
|
|
p->FoStartPackStreamIndex = NULL;
|
|
p->FoToCoderUnpackSizes = NULL;
|
|
p->FoToMainUnpackSizeIndex = NULL;
|
|
p->CoderUnpackSizes = NULL;
|
|
|
|
p->CodersData = NULL;
|
|
}
|
|
|
|
static void SzAr_Free(CSzAr *p, ISzAllocPtr alloc)
|
|
{
|
|
ISzAlloc_Free(alloc, p->PackPositions);
|
|
SzBitUi32s_Free(&p->FolderCRCs, alloc);
|
|
|
|
ISzAlloc_Free(alloc, p->FoCodersOffsets);
|
|
ISzAlloc_Free(alloc, p->FoStartPackStreamIndex);
|
|
ISzAlloc_Free(alloc, p->FoToCoderUnpackSizes);
|
|
ISzAlloc_Free(alloc, p->FoToMainUnpackSizeIndex);
|
|
ISzAlloc_Free(alloc, p->CoderUnpackSizes);
|
|
|
|
ISzAlloc_Free(alloc, p->CodersData);
|
|
|
|
SzAr_Init(p);
|
|
}
|
|
|
|
|
|
void SzArEx_Init(CSzArEx *p)
|
|
{
|
|
SzAr_Init(&p->db);
|
|
|
|
p->NumFiles = 0;
|
|
p->dataPos = 0;
|
|
|
|
p->UnpackPositions = NULL;
|
|
p->IsDirs = NULL;
|
|
|
|
p->FolderToFile = NULL;
|
|
p->FileToFolder = NULL;
|
|
|
|
p->FileNameOffsets = NULL;
|
|
p->FileNames = NULL;
|
|
|
|
SzBitUi32s_Init(&p->CRCs);
|
|
SzBitUi32s_Init(&p->Attribs);
|
|
// SzBitUi32s_Init(&p->Parents);
|
|
SzBitUi64s_Init(&p->MTime);
|
|
SzBitUi64s_Init(&p->CTime);
|
|
}
|
|
|
|
void SzArEx_Free(CSzArEx *p, ISzAllocPtr alloc)
|
|
{
|
|
ISzAlloc_Free(alloc, p->UnpackPositions);
|
|
ISzAlloc_Free(alloc, p->IsDirs);
|
|
|
|
ISzAlloc_Free(alloc, p->FolderToFile);
|
|
ISzAlloc_Free(alloc, p->FileToFolder);
|
|
|
|
ISzAlloc_Free(alloc, p->FileNameOffsets);
|
|
ISzAlloc_Free(alloc, p->FileNames);
|
|
|
|
SzBitUi32s_Free(&p->CRCs, alloc);
|
|
SzBitUi32s_Free(&p->Attribs, alloc);
|
|
// SzBitUi32s_Free(&p->Parents, alloc);
|
|
SzBitUi64s_Free(&p->MTime, alloc);
|
|
SzBitUi64s_Free(&p->CTime, alloc);
|
|
|
|
SzAr_Free(&p->db, alloc);
|
|
SzArEx_Init(p);
|
|
}
|
|
|
|
|
|
static int TestSignatureCandidate(const Byte *testBytes)
|
|
{
|
|
unsigned i;
|
|
for (i = 0; i < k7zSignatureSize; i++)
|
|
if (testBytes[i] != k7zSignature[i])
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
#define SzData_Clear(p) { (p)->Data = NULL; (p)->Size = 0; }
|
|
|
|
#define SZ_READ_BYTE_SD(_sd_, dest) if ((_sd_)->Size == 0) return SZ_ERROR_ARCHIVE; (_sd_)->Size--; dest = *(_sd_)->Data++;
|
|
#define SZ_READ_BYTE(dest) SZ_READ_BYTE_SD(sd, dest)
|
|
#define SZ_READ_BYTE_2(dest) if (sd.Size == 0) return SZ_ERROR_ARCHIVE; sd.Size--; dest = *sd.Data++;
|
|
|
|
#define SKIP_DATA(sd, size) { sd->Size -= (size_t)(size); sd->Data += (size_t)(size); }
|
|
#define SKIP_DATA2(sd, size) { sd.Size -= (size_t)(size); sd.Data += (size_t)(size); }
|
|
|
|
#define SZ_READ_32(dest) if (sd.Size < 4) return SZ_ERROR_ARCHIVE; \
|
|
dest = GetUi32(sd.Data); SKIP_DATA2(sd, 4);
|
|
|
|
static MY_NO_INLINE SRes ReadNumber(CSzData *sd, UInt64 *value)
|
|
{
|
|
Byte firstByte, mask;
|
|
unsigned i;
|
|
UInt32 v;
|
|
|
|
SZ_READ_BYTE(firstByte);
|
|
if ((firstByte & 0x80) == 0)
|
|
{
|
|
*value = firstByte;
|
|
return SZ_OK;
|
|
}
|
|
SZ_READ_BYTE(v);
|
|
if ((firstByte & 0x40) == 0)
|
|
{
|
|
*value = (((UInt32)firstByte & 0x3F) << 8) | v;
|
|
return SZ_OK;
|
|
}
|
|
SZ_READ_BYTE(mask);
|
|
*value = v | ((UInt32)mask << 8);
|
|
mask = 0x20;
|
|
for (i = 2; i < 8; i++)
|
|
{
|
|
Byte b;
|
|
if ((firstByte & mask) == 0)
|
|
{
|
|
UInt64 highPart = (unsigned)firstByte & (unsigned)(mask - 1);
|
|
*value |= (highPart << (8 * i));
|
|
return SZ_OK;
|
|
}
|
|
SZ_READ_BYTE(b);
|
|
*value |= ((UInt64)b << (8 * i));
|
|
mask >>= 1;
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
static MY_NO_INLINE SRes SzReadNumber32(CSzData *sd, UInt32 *value)
|
|
{
|
|
Byte firstByte;
|
|
UInt64 value64;
|
|
if (sd->Size == 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
firstByte = *sd->Data;
|
|
if ((firstByte & 0x80) == 0)
|
|
{
|
|
*value = firstByte;
|
|
sd->Data++;
|
|
sd->Size--;
|
|
return SZ_OK;
|
|
}
|
|
RINOK(ReadNumber(sd, &value64));
|
|
if (value64 >= (UInt32)0x80000000 - 1)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (value64 >= ((UInt64)(1) << ((sizeof(size_t) - 1) * 8 + 4)))
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
*value = (UInt32)value64;
|
|
return SZ_OK;
|
|
}
|
|
|
|
#define ReadID(sd, value) ReadNumber(sd, value)
|
|
|
|
static SRes SkipData(CSzData *sd)
|
|
{
|
|
UInt64 size;
|
|
RINOK(ReadNumber(sd, &size));
|
|
if (size > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
SKIP_DATA(sd, size);
|
|
return SZ_OK;
|
|
}
|
|
|
|
static SRes WaitId(CSzData *sd, UInt32 id)
|
|
{
|
|
for (;;)
|
|
{
|
|
UInt64 type;
|
|
RINOK(ReadID(sd, &type));
|
|
if (type == id)
|
|
return SZ_OK;
|
|
if (type == k7zIdEnd)
|
|
return SZ_ERROR_ARCHIVE;
|
|
RINOK(SkipData(sd));
|
|
}
|
|
}
|
|
|
|
static SRes RememberBitVector(CSzData *sd, UInt32 numItems, const Byte **v)
|
|
{
|
|
UInt32 numBytes = (numItems + 7) >> 3;
|
|
if (numBytes > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
*v = sd->Data;
|
|
SKIP_DATA(sd, numBytes);
|
|
return SZ_OK;
|
|
}
|
|
|
|
static UInt32 CountDefinedBits(const Byte *bits, UInt32 numItems)
|
|
{
|
|
Byte b = 0;
|
|
unsigned m = 0;
|
|
UInt32 sum = 0;
|
|
for (; numItems != 0; numItems--)
|
|
{
|
|
if (m == 0)
|
|
{
|
|
b = *bits++;
|
|
m = 8;
|
|
}
|
|
m--;
|
|
sum += ((b >> m) & 1);
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
static MY_NO_INLINE SRes ReadBitVector(CSzData *sd, UInt32 numItems, Byte **v, ISzAllocPtr alloc)
|
|
{
|
|
Byte allAreDefined;
|
|
Byte *v2;
|
|
UInt32 numBytes = (numItems + 7) >> 3;
|
|
*v = NULL;
|
|
SZ_READ_BYTE(allAreDefined);
|
|
if (numBytes == 0)
|
|
return SZ_OK;
|
|
if (allAreDefined == 0)
|
|
{
|
|
if (numBytes > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
MY_ALLOC_AND_CPY(*v, numBytes, sd->Data, alloc);
|
|
SKIP_DATA(sd, numBytes);
|
|
return SZ_OK;
|
|
}
|
|
MY_ALLOC(Byte, *v, numBytes, alloc);
|
|
v2 = *v;
|
|
memset(v2, 0xFF, (size_t)numBytes);
|
|
{
|
|
unsigned numBits = (unsigned)numItems & 7;
|
|
if (numBits != 0)
|
|
v2[(size_t)numBytes - 1] = (Byte)((((UInt32)1 << numBits) - 1) << (8 - numBits));
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
static MY_NO_INLINE SRes ReadUi32s(CSzData *sd2, UInt32 numItems, CSzBitUi32s *crcs, ISzAllocPtr alloc)
|
|
{
|
|
UInt32 i;
|
|
CSzData sd;
|
|
UInt32 *vals;
|
|
const Byte *defs;
|
|
MY_ALLOC_ZE(UInt32, crcs->Vals, numItems, alloc);
|
|
sd = *sd2;
|
|
defs = crcs->Defs;
|
|
vals = crcs->Vals;
|
|
for (i = 0; i < numItems; i++)
|
|
if (SzBitArray_Check(defs, i))
|
|
{
|
|
SZ_READ_32(vals[i]);
|
|
}
|
|
else
|
|
vals[i] = 0;
|
|
*sd2 = sd;
|
|
return SZ_OK;
|
|
}
|
|
|
|
static SRes ReadBitUi32s(CSzData *sd, UInt32 numItems, CSzBitUi32s *crcs, ISzAllocPtr alloc)
|
|
{
|
|
SzBitUi32s_Free(crcs, alloc);
|
|
RINOK(ReadBitVector(sd, numItems, &crcs->Defs, alloc));
|
|
return ReadUi32s(sd, numItems, crcs, alloc);
|
|
}
|
|
|
|
static SRes SkipBitUi32s(CSzData *sd, UInt32 numItems)
|
|
{
|
|
Byte allAreDefined;
|
|
UInt32 numDefined = numItems;
|
|
SZ_READ_BYTE(allAreDefined);
|
|
if (!allAreDefined)
|
|
{
|
|
size_t numBytes = (numItems + 7) >> 3;
|
|
if (numBytes > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
numDefined = CountDefinedBits(sd->Data, numItems);
|
|
SKIP_DATA(sd, numBytes);
|
|
}
|
|
if (numDefined > (sd->Size >> 2))
|
|
return SZ_ERROR_ARCHIVE;
|
|
SKIP_DATA(sd, (size_t)numDefined * 4);
|
|
return SZ_OK;
|
|
}
|
|
|
|
static SRes ReadPackInfo(CSzAr *p, CSzData *sd, ISzAllocPtr alloc)
|
|
{
|
|
RINOK(SzReadNumber32(sd, &p->NumPackStreams));
|
|
|
|
RINOK(WaitId(sd, k7zIdSize));
|
|
MY_ALLOC(UInt64, p->PackPositions, (size_t)p->NumPackStreams + 1, alloc);
|
|
{
|
|
UInt64 sum = 0;
|
|
UInt32 i;
|
|
UInt32 numPackStreams = p->NumPackStreams;
|
|
for (i = 0; i < numPackStreams; i++)
|
|
{
|
|
UInt64 packSize;
|
|
p->PackPositions[i] = sum;
|
|
RINOK(ReadNumber(sd, &packSize));
|
|
sum += packSize;
|
|
if (sum < packSize)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
p->PackPositions[i] = sum;
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
UInt64 type;
|
|
RINOK(ReadID(sd, &type));
|
|
if (type == k7zIdEnd)
|
|
return SZ_OK;
|
|
if (type == k7zIdCRC)
|
|
{
|
|
/* CRC of packed streams is unused now */
|
|
RINOK(SkipBitUi32s(sd, p->NumPackStreams));
|
|
continue;
|
|
}
|
|
RINOK(SkipData(sd));
|
|
}
|
|
}
|
|
|
|
/*
|
|
static SRes SzReadSwitch(CSzData *sd)
|
|
{
|
|
Byte external;
|
|
RINOK(SzReadByte(sd, &external));
|
|
return (external == 0) ? SZ_OK: SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
*/
|
|
|
|
#define k_NumCodersStreams_in_Folder_MAX (SZ_NUM_BONDS_IN_FOLDER_MAX + SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX)
|
|
|
|
SRes SzGetNextFolderItem(CSzFolder *f, CSzData *sd)
|
|
{
|
|
UInt32 numCoders, i;
|
|
UInt32 numInStreams = 0;
|
|
const Byte *dataStart = sd->Data;
|
|
|
|
f->NumCoders = 0;
|
|
f->NumBonds = 0;
|
|
f->NumPackStreams = 0;
|
|
f->UnpackStream = 0;
|
|
|
|
RINOK(SzReadNumber32(sd, &numCoders));
|
|
if (numCoders == 0 || numCoders > SZ_NUM_CODERS_IN_FOLDER_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
for (i = 0; i < numCoders; i++)
|
|
{
|
|
Byte mainByte;
|
|
CSzCoderInfo *coder = f->Coders + i;
|
|
unsigned idSize, j;
|
|
UInt64 id;
|
|
|
|
SZ_READ_BYTE(mainByte);
|
|
if ((mainByte & 0xC0) != 0)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
idSize = (unsigned)(mainByte & 0xF);
|
|
if (idSize > sizeof(id))
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (idSize > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
id = 0;
|
|
for (j = 0; j < idSize; j++)
|
|
{
|
|
id = ((id << 8) | *sd->Data);
|
|
sd->Data++;
|
|
sd->Size--;
|
|
}
|
|
if (id > (UInt32)0xFFFFFFFF)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
coder->MethodID = (UInt32)id;
|
|
|
|
coder->NumStreams = 1;
|
|
coder->PropsOffset = 0;
|
|
coder->PropsSize = 0;
|
|
|
|
if ((mainByte & 0x10) != 0)
|
|
{
|
|
UInt32 numStreams;
|
|
|
|
RINOK(SzReadNumber32(sd, &numStreams));
|
|
if (numStreams > k_NumCodersStreams_in_Folder_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
coder->NumStreams = (Byte)numStreams;
|
|
|
|
RINOK(SzReadNumber32(sd, &numStreams));
|
|
if (numStreams != 1)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
|
|
numInStreams += coder->NumStreams;
|
|
|
|
if (numInStreams > k_NumCodersStreams_in_Folder_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
if ((mainByte & 0x20) != 0)
|
|
{
|
|
UInt32 propsSize = 0;
|
|
RINOK(SzReadNumber32(sd, &propsSize));
|
|
if (propsSize > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
if (propsSize >= 0x80)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
coder->PropsOffset = sd->Data - dataStart;
|
|
coder->PropsSize = (Byte)propsSize;
|
|
sd->Data += (size_t)propsSize;
|
|
sd->Size -= (size_t)propsSize;
|
|
}
|
|
}
|
|
|
|
/*
|
|
if (numInStreams == 1 && numCoders == 1)
|
|
{
|
|
f->NumPackStreams = 1;
|
|
f->PackStreams[0] = 0;
|
|
}
|
|
else
|
|
*/
|
|
{
|
|
Byte streamUsed[k_NumCodersStreams_in_Folder_MAX];
|
|
UInt32 numBonds, numPackStreams;
|
|
|
|
numBonds = numCoders - 1;
|
|
if (numInStreams < numBonds)
|
|
return SZ_ERROR_ARCHIVE;
|
|
if (numBonds > SZ_NUM_BONDS_IN_FOLDER_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
f->NumBonds = numBonds;
|
|
|
|
numPackStreams = numInStreams - numBonds;
|
|
if (numPackStreams > SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
f->NumPackStreams = numPackStreams;
|
|
|
|
for (i = 0; i < numInStreams; i++)
|
|
streamUsed[i] = False;
|
|
|
|
if (numBonds != 0)
|
|
{
|
|
Byte coderUsed[SZ_NUM_CODERS_IN_FOLDER_MAX];
|
|
|
|
for (i = 0; i < numCoders; i++)
|
|
coderUsed[i] = False;
|
|
|
|
for (i = 0; i < numBonds; i++)
|
|
{
|
|
CSzBond *bp = f->Bonds + i;
|
|
|
|
RINOK(SzReadNumber32(sd, &bp->InIndex));
|
|
if (bp->InIndex >= numInStreams || streamUsed[bp->InIndex])
|
|
return SZ_ERROR_ARCHIVE;
|
|
streamUsed[bp->InIndex] = True;
|
|
|
|
RINOK(SzReadNumber32(sd, &bp->OutIndex));
|
|
if (bp->OutIndex >= numCoders || coderUsed[bp->OutIndex])
|
|
return SZ_ERROR_ARCHIVE;
|
|
coderUsed[bp->OutIndex] = True;
|
|
}
|
|
|
|
for (i = 0; i < numCoders; i++)
|
|
if (!coderUsed[i])
|
|
{
|
|
f->UnpackStream = i;
|
|
break;
|
|
}
|
|
|
|
if (i == numCoders)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
|
|
if (numPackStreams == 1)
|
|
{
|
|
for (i = 0; i < numInStreams; i++)
|
|
if (!streamUsed[i])
|
|
break;
|
|
if (i == numInStreams)
|
|
return SZ_ERROR_ARCHIVE;
|
|
f->PackStreams[0] = i;
|
|
}
|
|
else
|
|
for (i = 0; i < numPackStreams; i++)
|
|
{
|
|
UInt32 index;
|
|
RINOK(SzReadNumber32(sd, &index));
|
|
if (index >= numInStreams || streamUsed[index])
|
|
return SZ_ERROR_ARCHIVE;
|
|
streamUsed[index] = True;
|
|
f->PackStreams[i] = index;
|
|
}
|
|
}
|
|
|
|
f->NumCoders = numCoders;
|
|
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
static MY_NO_INLINE SRes SkipNumbers(CSzData *sd2, UInt32 num)
|
|
{
|
|
CSzData sd;
|
|
sd = *sd2;
|
|
for (; num != 0; num--)
|
|
{
|
|
Byte firstByte, mask;
|
|
unsigned i;
|
|
SZ_READ_BYTE_2(firstByte);
|
|
if ((firstByte & 0x80) == 0)
|
|
continue;
|
|
if ((firstByte & 0x40) == 0)
|
|
{
|
|
if (sd.Size == 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
sd.Size--;
|
|
sd.Data++;
|
|
continue;
|
|
}
|
|
mask = 0x20;
|
|
for (i = 2; i < 8 && (firstByte & mask) != 0; i++)
|
|
mask >>= 1;
|
|
if (i > sd.Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
SKIP_DATA2(sd, i);
|
|
}
|
|
*sd2 = sd;
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
#define k_Scan_NumCoders_MAX 64
|
|
#define k_Scan_NumCodersStreams_in_Folder_MAX 64
|
|
|
|
|
|
static SRes ReadUnpackInfo(CSzAr *p,
|
|
CSzData *sd2,
|
|
UInt32 numFoldersMax,
|
|
const CBuf *tempBufs, UInt32 numTempBufs,
|
|
ISzAllocPtr alloc)
|
|
{
|
|
CSzData sd;
|
|
|
|
UInt32 fo, numFolders, numCodersOutStreams, packStreamIndex;
|
|
const Byte *startBufPtr;
|
|
Byte external;
|
|
|
|
RINOK(WaitId(sd2, k7zIdFolder));
|
|
|
|
RINOK(SzReadNumber32(sd2, &numFolders));
|
|
if (numFolders > numFoldersMax)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
p->NumFolders = numFolders;
|
|
|
|
SZ_READ_BYTE_SD(sd2, external);
|
|
if (external == 0)
|
|
sd = *sd2;
|
|
else
|
|
{
|
|
UInt32 index;
|
|
RINOK(SzReadNumber32(sd2, &index));
|
|
if (index >= numTempBufs)
|
|
return SZ_ERROR_ARCHIVE;
|
|
sd.Data = tempBufs[index].data;
|
|
sd.Size = tempBufs[index].size;
|
|
}
|
|
|
|
MY_ALLOC(size_t, p->FoCodersOffsets, (size_t)numFolders + 1, alloc);
|
|
MY_ALLOC(UInt32, p->FoStartPackStreamIndex, (size_t)numFolders + 1, alloc);
|
|
MY_ALLOC(UInt32, p->FoToCoderUnpackSizes, (size_t)numFolders + 1, alloc);
|
|
MY_ALLOC_ZE(Byte, p->FoToMainUnpackSizeIndex, (size_t)numFolders, alloc);
|
|
|
|
startBufPtr = sd.Data;
|
|
|
|
packStreamIndex = 0;
|
|
numCodersOutStreams = 0;
|
|
|
|
for (fo = 0; fo < numFolders; fo++)
|
|
{
|
|
UInt32 numCoders, ci, numInStreams = 0;
|
|
|
|
p->FoCodersOffsets[fo] = sd.Data - startBufPtr;
|
|
|
|
RINOK(SzReadNumber32(&sd, &numCoders));
|
|
if (numCoders == 0 || numCoders > k_Scan_NumCoders_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
for (ci = 0; ci < numCoders; ci++)
|
|
{
|
|
Byte mainByte;
|
|
unsigned idSize;
|
|
UInt32 coderInStreams;
|
|
|
|
SZ_READ_BYTE_2(mainByte);
|
|
if ((mainByte & 0xC0) != 0)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
idSize = (mainByte & 0xF);
|
|
if (idSize > 8)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (idSize > sd.Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
SKIP_DATA2(sd, idSize);
|
|
|
|
coderInStreams = 1;
|
|
|
|
if ((mainByte & 0x10) != 0)
|
|
{
|
|
UInt32 coderOutStreams;
|
|
RINOK(SzReadNumber32(&sd, &coderInStreams));
|
|
RINOK(SzReadNumber32(&sd, &coderOutStreams));
|
|
if (coderInStreams > k_Scan_NumCodersStreams_in_Folder_MAX || coderOutStreams != 1)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
|
|
numInStreams += coderInStreams;
|
|
|
|
if ((mainByte & 0x20) != 0)
|
|
{
|
|
UInt32 propsSize;
|
|
RINOK(SzReadNumber32(&sd, &propsSize));
|
|
if (propsSize > sd.Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
SKIP_DATA2(sd, propsSize);
|
|
}
|
|
}
|
|
|
|
{
|
|
UInt32 indexOfMainStream = 0;
|
|
UInt32 numPackStreams = 1;
|
|
|
|
if (numCoders != 1 || numInStreams != 1)
|
|
{
|
|
Byte streamUsed[k_Scan_NumCodersStreams_in_Folder_MAX];
|
|
Byte coderUsed[k_Scan_NumCoders_MAX];
|
|
|
|
UInt32 i;
|
|
UInt32 numBonds = numCoders - 1;
|
|
if (numInStreams < numBonds)
|
|
return SZ_ERROR_ARCHIVE;
|
|
|
|
if (numInStreams > k_Scan_NumCodersStreams_in_Folder_MAX)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
for (i = 0; i < numInStreams; i++)
|
|
streamUsed[i] = False;
|
|
for (i = 0; i < numCoders; i++)
|
|
coderUsed[i] = False;
|
|
|
|
for (i = 0; i < numBonds; i++)
|
|
{
|
|
UInt32 index;
|
|
|
|
RINOK(SzReadNumber32(&sd, &index));
|
|
if (index >= numInStreams || streamUsed[index])
|
|
return SZ_ERROR_ARCHIVE;
|
|
streamUsed[index] = True;
|
|
|
|
RINOK(SzReadNumber32(&sd, &index));
|
|
if (index >= numCoders || coderUsed[index])
|
|
return SZ_ERROR_ARCHIVE;
|
|
coderUsed[index] = True;
|
|
}
|
|
|
|
numPackStreams = numInStreams - numBonds;
|
|
|
|
if (numPackStreams != 1)
|
|
for (i = 0; i < numPackStreams; i++)
|
|
{
|
|
UInt32 index;
|
|
RINOK(SzReadNumber32(&sd, &index));
|
|
if (index >= numInStreams || streamUsed[index])
|
|
return SZ_ERROR_ARCHIVE;
|
|
streamUsed[index] = True;
|
|
}
|
|
|
|
for (i = 0; i < numCoders; i++)
|
|
if (!coderUsed[i])
|
|
{
|
|
indexOfMainStream = i;
|
|
break;
|
|
}
|
|
|
|
if (i == numCoders)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
|
|
p->FoStartPackStreamIndex[fo] = packStreamIndex;
|
|
p->FoToCoderUnpackSizes[fo] = numCodersOutStreams;
|
|
p->FoToMainUnpackSizeIndex[fo] = (Byte)indexOfMainStream;
|
|
numCodersOutStreams += numCoders;
|
|
if (numCodersOutStreams < numCoders)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (numPackStreams > p->NumPackStreams - packStreamIndex)
|
|
return SZ_ERROR_ARCHIVE;
|
|
packStreamIndex += numPackStreams;
|
|
}
|
|
}
|
|
|
|
p->FoToCoderUnpackSizes[fo] = numCodersOutStreams;
|
|
|
|
{
|
|
size_t dataSize = sd.Data - startBufPtr;
|
|
p->FoStartPackStreamIndex[fo] = packStreamIndex;
|
|
p->FoCodersOffsets[fo] = dataSize;
|
|
MY_ALLOC_ZE_AND_CPY(p->CodersData, dataSize, startBufPtr, alloc);
|
|
}
|
|
|
|
if (external != 0)
|
|
{
|
|
if (sd.Size != 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
sd = *sd2;
|
|
}
|
|
|
|
RINOK(WaitId(&sd, k7zIdCodersUnpackSize));
|
|
|
|
MY_ALLOC_ZE(UInt64, p->CoderUnpackSizes, (size_t)numCodersOutStreams, alloc);
|
|
{
|
|
UInt32 i;
|
|
for (i = 0; i < numCodersOutStreams; i++)
|
|
{
|
|
RINOK(ReadNumber(&sd, p->CoderUnpackSizes + i));
|
|
}
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
UInt64 type;
|
|
RINOK(ReadID(&sd, &type));
|
|
if (type == k7zIdEnd)
|
|
{
|
|
*sd2 = sd;
|
|
return SZ_OK;
|
|
}
|
|
if (type == k7zIdCRC)
|
|
{
|
|
RINOK(ReadBitUi32s(&sd, numFolders, &p->FolderCRCs, alloc));
|
|
continue;
|
|
}
|
|
RINOK(SkipData(&sd));
|
|
}
|
|
}
|
|
|
|
|
|
UInt64 SzAr_GetFolderUnpackSize(const CSzAr *p, UInt32 folderIndex)
|
|
{
|
|
return p->CoderUnpackSizes[p->FoToCoderUnpackSizes[folderIndex] + p->FoToMainUnpackSizeIndex[folderIndex]];
|
|
}
|
|
|
|
|
|
typedef struct
|
|
{
|
|
UInt32 NumTotalSubStreams;
|
|
UInt32 NumSubDigests;
|
|
CSzData sdNumSubStreams;
|
|
CSzData sdSizes;
|
|
CSzData sdCRCs;
|
|
} CSubStreamInfo;
|
|
|
|
|
|
static SRes ReadSubStreamsInfo(CSzAr *p, CSzData *sd, CSubStreamInfo *ssi)
|
|
{
|
|
UInt64 type = 0;
|
|
UInt32 numSubDigests = 0;
|
|
UInt32 numFolders = p->NumFolders;
|
|
UInt32 numUnpackStreams = numFolders;
|
|
UInt32 numUnpackSizesInData = 0;
|
|
|
|
for (;;)
|
|
{
|
|
RINOK(ReadID(sd, &type));
|
|
if (type == k7zIdNumUnpackStream)
|
|
{
|
|
UInt32 i;
|
|
ssi->sdNumSubStreams.Data = sd->Data;
|
|
numUnpackStreams = 0;
|
|
numSubDigests = 0;
|
|
for (i = 0; i < numFolders; i++)
|
|
{
|
|
UInt32 numStreams;
|
|
RINOK(SzReadNumber32(sd, &numStreams));
|
|
if (numUnpackStreams > numUnpackStreams + numStreams)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
numUnpackStreams += numStreams;
|
|
if (numStreams != 0)
|
|
numUnpackSizesInData += (numStreams - 1);
|
|
if (numStreams != 1 || !SzBitWithVals_Check(&p->FolderCRCs, i))
|
|
numSubDigests += numStreams;
|
|
}
|
|
ssi->sdNumSubStreams.Size = sd->Data - ssi->sdNumSubStreams.Data;
|
|
continue;
|
|
}
|
|
if (type == k7zIdCRC || type == k7zIdSize || type == k7zIdEnd)
|
|
break;
|
|
RINOK(SkipData(sd));
|
|
}
|
|
|
|
if (!ssi->sdNumSubStreams.Data)
|
|
{
|
|
numSubDigests = numFolders;
|
|
if (p->FolderCRCs.Defs)
|
|
numSubDigests = numFolders - CountDefinedBits(p->FolderCRCs.Defs, numFolders);
|
|
}
|
|
|
|
ssi->NumTotalSubStreams = numUnpackStreams;
|
|
ssi->NumSubDigests = numSubDigests;
|
|
|
|
if (type == k7zIdSize)
|
|
{
|
|
ssi->sdSizes.Data = sd->Data;
|
|
RINOK(SkipNumbers(sd, numUnpackSizesInData));
|
|
ssi->sdSizes.Size = sd->Data - ssi->sdSizes.Data;
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
if (type == k7zIdEnd)
|
|
return SZ_OK;
|
|
if (type == k7zIdCRC)
|
|
{
|
|
ssi->sdCRCs.Data = sd->Data;
|
|
RINOK(SkipBitUi32s(sd, numSubDigests));
|
|
ssi->sdCRCs.Size = sd->Data - ssi->sdCRCs.Data;
|
|
}
|
|
else
|
|
{
|
|
RINOK(SkipData(sd));
|
|
}
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
}
|
|
|
|
static SRes SzReadStreamsInfo(CSzAr *p,
|
|
CSzData *sd,
|
|
UInt32 numFoldersMax, const CBuf *tempBufs, UInt32 numTempBufs,
|
|
UInt64 *dataOffset,
|
|
CSubStreamInfo *ssi,
|
|
ISzAllocPtr alloc)
|
|
{
|
|
UInt64 type;
|
|
|
|
SzData_Clear(&ssi->sdSizes);
|
|
SzData_Clear(&ssi->sdCRCs);
|
|
SzData_Clear(&ssi->sdNumSubStreams);
|
|
|
|
*dataOffset = 0;
|
|
RINOK(ReadID(sd, &type));
|
|
if (type == k7zIdPackInfo)
|
|
{
|
|
RINOK(ReadNumber(sd, dataOffset));
|
|
RINOK(ReadPackInfo(p, sd, alloc));
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
if (type == k7zIdUnpackInfo)
|
|
{
|
|
RINOK(ReadUnpackInfo(p, sd, numFoldersMax, tempBufs, numTempBufs, alloc));
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
if (type == k7zIdSubStreamsInfo)
|
|
{
|
|
RINOK(ReadSubStreamsInfo(p, sd, ssi));
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
else
|
|
{
|
|
ssi->NumTotalSubStreams = p->NumFolders;
|
|
// ssi->NumSubDigests = 0;
|
|
}
|
|
|
|
return (type == k7zIdEnd ? SZ_OK : SZ_ERROR_UNSUPPORTED);
|
|
}
|
|
|
|
static SRes SzReadAndDecodePackedStreams(
|
|
ILookInStream *inStream,
|
|
CSzData *sd,
|
|
CBuf *tempBufs,
|
|
UInt32 numFoldersMax,
|
|
UInt64 baseOffset,
|
|
CSzAr *p,
|
|
ISzAllocPtr allocTemp)
|
|
{
|
|
UInt64 dataStartPos;
|
|
UInt32 fo;
|
|
CSubStreamInfo ssi;
|
|
|
|
RINOK(SzReadStreamsInfo(p, sd, numFoldersMax, NULL, 0, &dataStartPos, &ssi, allocTemp));
|
|
|
|
dataStartPos += baseOffset;
|
|
if (p->NumFolders == 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
|
|
for (fo = 0; fo < p->NumFolders; fo++)
|
|
Buf_Init(tempBufs + fo);
|
|
|
|
for (fo = 0; fo < p->NumFolders; fo++)
|
|
{
|
|
CBuf *tempBuf = tempBufs + fo;
|
|
UInt64 unpackSize = SzAr_GetFolderUnpackSize(p, fo);
|
|
if ((size_t)unpackSize != unpackSize)
|
|
return SZ_ERROR_MEM;
|
|
if (!Buf_Create(tempBuf, (size_t)unpackSize, allocTemp))
|
|
return SZ_ERROR_MEM;
|
|
}
|
|
|
|
for (fo = 0; fo < p->NumFolders; fo++)
|
|
{
|
|
const CBuf *tempBuf = tempBufs + fo;
|
|
RINOK(LookInStream_SeekTo(inStream, dataStartPos));
|
|
RINOK(SzAr_DecodeFolder(p, fo, inStream, dataStartPos, tempBuf->data, tempBuf->size, allocTemp));
|
|
}
|
|
|
|
return SZ_OK;
|
|
}
|
|
|
|
static SRes SzReadFileNames(const Byte *data, size_t size, UInt32 numFiles, size_t *offsets)
|
|
{
|
|
size_t pos = 0;
|
|
*offsets++ = 0;
|
|
if (numFiles == 0)
|
|
return (size == 0) ? SZ_OK : SZ_ERROR_ARCHIVE;
|
|
if (size < 2)
|
|
return SZ_ERROR_ARCHIVE;
|
|
if (data[size - 2] != 0 || data[size - 1] != 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
do
|
|
{
|
|
const Byte *p;
|
|
if (pos == size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
for (p = data + pos;
|
|
#ifdef _WIN32
|
|
*(const UInt16 *)p != 0
|
|
#else
|
|
p[0] != 0 || p[1] != 0
|
|
#endif
|
|
; p += 2);
|
|
pos = p - data + 2;
|
|
*offsets++ = (pos >> 1);
|
|
}
|
|
while (--numFiles);
|
|
return (pos == size) ? SZ_OK : SZ_ERROR_ARCHIVE;
|
|
}
|
|
|
|
static MY_NO_INLINE SRes ReadTime(CSzBitUi64s *p, UInt32 num,
|
|
CSzData *sd2,
|
|
const CBuf *tempBufs, UInt32 numTempBufs,
|
|
ISzAllocPtr alloc)
|
|
{
|
|
CSzData sd;
|
|
UInt32 i;
|
|
CNtfsFileTime *vals;
|
|
Byte *defs;
|
|
Byte external;
|
|
|
|
RINOK(ReadBitVector(sd2, num, &p->Defs, alloc));
|
|
|
|
SZ_READ_BYTE_SD(sd2, external);
|
|
if (external == 0)
|
|
sd = *sd2;
|
|
else
|
|
{
|
|
UInt32 index;
|
|
RINOK(SzReadNumber32(sd2, &index));
|
|
if (index >= numTempBufs)
|
|
return SZ_ERROR_ARCHIVE;
|
|
sd.Data = tempBufs[index].data;
|
|
sd.Size = tempBufs[index].size;
|
|
}
|
|
|
|
MY_ALLOC_ZE(CNtfsFileTime, p->Vals, num, alloc);
|
|
vals = p->Vals;
|
|
defs = p->Defs;
|
|
for (i = 0; i < num; i++)
|
|
if (SzBitArray_Check(defs, i))
|
|
{
|
|
if (sd.Size < 8)
|
|
return SZ_ERROR_ARCHIVE;
|
|
vals[i].Low = GetUi32(sd.Data);
|
|
vals[i].High = GetUi32(sd.Data + 4);
|
|
SKIP_DATA2(sd, 8);
|
|
}
|
|
else
|
|
vals[i].High = vals[i].Low = 0;
|
|
|
|
if (external == 0)
|
|
*sd2 = sd;
|
|
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
#define NUM_ADDITIONAL_STREAMS_MAX 8
|
|
|
|
|
|
static SRes SzReadHeader2(
|
|
CSzArEx *p, /* allocMain */
|
|
CSzData *sd,
|
|
ILookInStream *inStream,
|
|
CBuf *tempBufs, UInt32 *numTempBufs,
|
|
ISzAllocPtr allocMain,
|
|
ISzAllocPtr allocTemp
|
|
)
|
|
{
|
|
CSubStreamInfo ssi;
|
|
|
|
{
|
|
UInt64 type;
|
|
|
|
SzData_Clear(&ssi.sdSizes);
|
|
SzData_Clear(&ssi.sdCRCs);
|
|
SzData_Clear(&ssi.sdNumSubStreams);
|
|
|
|
ssi.NumSubDigests = 0;
|
|
ssi.NumTotalSubStreams = 0;
|
|
|
|
RINOK(ReadID(sd, &type));
|
|
|
|
if (type == k7zIdArchiveProperties)
|
|
{
|
|
for (;;)
|
|
{
|
|
UInt64 type2;
|
|
RINOK(ReadID(sd, &type2));
|
|
if (type2 == k7zIdEnd)
|
|
break;
|
|
RINOK(SkipData(sd));
|
|
}
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
|
|
if (type == k7zIdAdditionalStreamsInfo)
|
|
{
|
|
CSzAr tempAr;
|
|
SRes res;
|
|
|
|
SzAr_Init(&tempAr);
|
|
res = SzReadAndDecodePackedStreams(inStream, sd, tempBufs, NUM_ADDITIONAL_STREAMS_MAX,
|
|
p->startPosAfterHeader, &tempAr, allocTemp);
|
|
*numTempBufs = tempAr.NumFolders;
|
|
SzAr_Free(&tempAr, allocTemp);
|
|
|
|
if (res != SZ_OK)
|
|
return res;
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
|
|
if (type == k7zIdMainStreamsInfo)
|
|
{
|
|
RINOK(SzReadStreamsInfo(&p->db, sd, (UInt32)1 << 30, tempBufs, *numTempBufs,
|
|
&p->dataPos, &ssi, allocMain));
|
|
p->dataPos += p->startPosAfterHeader;
|
|
RINOK(ReadID(sd, &type));
|
|
}
|
|
|
|
if (type == k7zIdEnd)
|
|
{
|
|
return SZ_OK;
|
|
}
|
|
|
|
if (type != k7zIdFilesInfo)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
|
|
{
|
|
UInt32 numFiles = 0;
|
|
UInt32 numEmptyStreams = 0;
|
|
const Byte *emptyStreams = NULL;
|
|
const Byte *emptyFiles = NULL;
|
|
|
|
RINOK(SzReadNumber32(sd, &numFiles));
|
|
p->NumFiles = numFiles;
|
|
|
|
for (;;)
|
|
{
|
|
UInt64 type;
|
|
UInt64 size;
|
|
RINOK(ReadID(sd, &type));
|
|
if (type == k7zIdEnd)
|
|
break;
|
|
RINOK(ReadNumber(sd, &size));
|
|
if (size > sd->Size)
|
|
return SZ_ERROR_ARCHIVE;
|
|
|
|
if (type >= ((UInt32)1 << 8))
|
|
{
|
|
SKIP_DATA(sd, size);
|
|
}
|
|
else switch ((unsigned)type)
|
|
{
|
|
case k7zIdName:
|
|
{
|
|
size_t namesSize;
|
|
const Byte *namesData;
|
|
Byte external;
|
|
|
|
SZ_READ_BYTE(external);
|
|
if (external == 0)
|
|
{
|
|
namesSize = (size_t)size - 1;
|
|
namesData = sd->Data;
|
|
}
|
|
else
|
|
{
|
|
UInt32 index;
|
|
RINOK(SzReadNumber32(sd, &index));
|
|
if (index >= *numTempBufs)
|
|
return SZ_ERROR_ARCHIVE;
|
|
namesData = (tempBufs)[index].data;
|
|
namesSize = (tempBufs)[index].size;
|
|
}
|
|
|
|
if ((namesSize & 1) != 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
MY_ALLOC(size_t, p->FileNameOffsets, numFiles + 1, allocMain);
|
|
MY_ALLOC_ZE_AND_CPY(p->FileNames, namesSize, namesData, allocMain);
|
|
RINOK(SzReadFileNames(p->FileNames, namesSize, numFiles, p->FileNameOffsets))
|
|
if (external == 0)
|
|
{
|
|
SKIP_DATA(sd, namesSize);
|
|
}
|
|
break;
|
|
}
|
|
case k7zIdEmptyStream:
|
|
{
|
|
RINOK(RememberBitVector(sd, numFiles, &emptyStreams));
|
|
numEmptyStreams = CountDefinedBits(emptyStreams, numFiles);
|
|
emptyFiles = NULL;
|
|
break;
|
|
}
|
|
case k7zIdEmptyFile:
|
|
{
|
|
RINOK(RememberBitVector(sd, numEmptyStreams, &emptyFiles));
|
|
break;
|
|
}
|
|
case k7zIdWinAttrib:
|
|
{
|
|
Byte external;
|
|
CSzData sdSwitch;
|
|
CSzData *sdPtr;
|
|
SzBitUi32s_Free(&p->Attribs, allocMain);
|
|
RINOK(ReadBitVector(sd, numFiles, &p->Attribs.Defs, allocMain));
|
|
|
|
SZ_READ_BYTE(external);
|
|
if (external == 0)
|
|
sdPtr = sd;
|
|
else
|
|
{
|
|
UInt32 index;
|
|
RINOK(SzReadNumber32(sd, &index));
|
|
if (index >= *numTempBufs)
|
|
return SZ_ERROR_ARCHIVE;
|
|
sdSwitch.Data = (tempBufs)[index].data;
|
|
sdSwitch.Size = (tempBufs)[index].size;
|
|
sdPtr = &sdSwitch;
|
|
}
|
|
RINOK(ReadUi32s(sdPtr, numFiles, &p->Attribs, allocMain));
|
|
break;
|
|
}
|
|
/*
|
|
case k7zParent:
|
|
{
|
|
SzBitUi32s_Free(&p->Parents, allocMain);
|
|
RINOK(ReadBitVector(sd, numFiles, &p->Parents.Defs, allocMain));
|
|
RINOK(SzReadSwitch(sd));
|
|
RINOK(ReadUi32s(sd, numFiles, &p->Parents, allocMain));
|
|
break;
|
|
}
|
|
*/
|
|
case k7zIdMTime: RINOK(ReadTime(&p->MTime, numFiles, sd, tempBufs, *numTempBufs, allocMain)); break;
|
|
case k7zIdCTime: RINOK(ReadTime(&p->CTime, numFiles, sd, tempBufs, *numTempBufs, allocMain)); break;
|
|
default:
|
|
{
|
|
SKIP_DATA(sd, size);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (numFiles - numEmptyStreams != ssi.NumTotalSubStreams)
|
|
return SZ_ERROR_ARCHIVE;
|
|
|
|
for (;;)
|
|
{
|
|
UInt64 type;
|
|
RINOK(ReadID(sd, &type));
|
|
if (type == k7zIdEnd)
|
|
break;
|
|
RINOK(SkipData(sd));
|
|
}
|
|
|
|
{
|
|
UInt32 i;
|
|
UInt32 emptyFileIndex = 0;
|
|
UInt32 folderIndex = 0;
|
|
UInt32 remSubStreams = 0;
|
|
UInt32 numSubStreams = 0;
|
|
UInt64 unpackPos = 0;
|
|
const Byte *digestsDefs = NULL;
|
|
const Byte *digestsVals = NULL;
|
|
UInt32 digestsValsIndex = 0;
|
|
UInt32 digestIndex;
|
|
Byte allDigestsDefined = 0;
|
|
Byte isDirMask = 0;
|
|
Byte crcMask = 0;
|
|
Byte mask = 0x80;
|
|
|
|
MY_ALLOC(UInt32, p->FolderToFile, p->db.NumFolders + 1, allocMain);
|
|
MY_ALLOC_ZE(UInt32, p->FileToFolder, p->NumFiles, allocMain);
|
|
MY_ALLOC(UInt64, p->UnpackPositions, p->NumFiles + 1, allocMain);
|
|
MY_ALLOC_ZE(Byte, p->IsDirs, (p->NumFiles + 7) >> 3, allocMain);
|
|
|
|
RINOK(SzBitUi32s_Alloc(&p->CRCs, p->NumFiles, allocMain));
|
|
|
|
if (ssi.sdCRCs.Size != 0)
|
|
{
|
|
SZ_READ_BYTE_SD(&ssi.sdCRCs, allDigestsDefined);
|
|
if (allDigestsDefined)
|
|
digestsVals = ssi.sdCRCs.Data;
|
|
else
|
|
{
|
|
size_t numBytes = (ssi.NumSubDigests + 7) >> 3;
|
|
digestsDefs = ssi.sdCRCs.Data;
|
|
digestsVals = digestsDefs + numBytes;
|
|
}
|
|
}
|
|
|
|
digestIndex = 0;
|
|
|
|
for (i = 0; i < numFiles; i++, mask >>= 1)
|
|
{
|
|
if (mask == 0)
|
|
{
|
|
UInt32 byteIndex = (i - 1) >> 3;
|
|
p->IsDirs[byteIndex] = isDirMask;
|
|
p->CRCs.Defs[byteIndex] = crcMask;
|
|
isDirMask = 0;
|
|
crcMask = 0;
|
|
mask = 0x80;
|
|
}
|
|
|
|
p->UnpackPositions[i] = unpackPos;
|
|
p->CRCs.Vals[i] = 0;
|
|
|
|
if (emptyStreams && SzBitArray_Check(emptyStreams, i))
|
|
{
|
|
if (emptyFiles)
|
|
{
|
|
if (!SzBitArray_Check(emptyFiles, emptyFileIndex))
|
|
isDirMask |= mask;
|
|
emptyFileIndex++;
|
|
}
|
|
else
|
|
isDirMask |= mask;
|
|
if (remSubStreams == 0)
|
|
{
|
|
p->FileToFolder[i] = (UInt32)-1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (remSubStreams == 0)
|
|
{
|
|
for (;;)
|
|
{
|
|
if (folderIndex >= p->db.NumFolders)
|
|
return SZ_ERROR_ARCHIVE;
|
|
p->FolderToFile[folderIndex] = i;
|
|
numSubStreams = 1;
|
|
if (ssi.sdNumSubStreams.Data)
|
|
{
|
|
RINOK(SzReadNumber32(&ssi.sdNumSubStreams, &numSubStreams));
|
|
}
|
|
remSubStreams = numSubStreams;
|
|
if (numSubStreams != 0)
|
|
break;
|
|
{
|
|
UInt64 folderUnpackSize = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
|
|
unpackPos += folderUnpackSize;
|
|
if (unpackPos < folderUnpackSize)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
|
|
folderIndex++;
|
|
}
|
|
}
|
|
|
|
p->FileToFolder[i] = folderIndex;
|
|
|
|
if (emptyStreams && SzBitArray_Check(emptyStreams, i))
|
|
continue;
|
|
|
|
if (--remSubStreams == 0)
|
|
{
|
|
UInt64 folderUnpackSize = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
|
|
UInt64 startFolderUnpackPos = p->UnpackPositions[p->FolderToFile[folderIndex]];
|
|
if (folderUnpackSize < unpackPos - startFolderUnpackPos)
|
|
return SZ_ERROR_ARCHIVE;
|
|
unpackPos = startFolderUnpackPos + folderUnpackSize;
|
|
if (unpackPos < folderUnpackSize)
|
|
return SZ_ERROR_ARCHIVE;
|
|
|
|
if (numSubStreams == 1 && SzBitWithVals_Check(&p->db.FolderCRCs, i))
|
|
{
|
|
p->CRCs.Vals[i] = p->db.FolderCRCs.Vals[folderIndex];
|
|
crcMask |= mask;
|
|
}
|
|
else if (allDigestsDefined || (digestsDefs && SzBitArray_Check(digestsDefs, digestIndex)))
|
|
{
|
|
p->CRCs.Vals[i] = GetUi32(digestsVals + (size_t)digestsValsIndex * 4);
|
|
digestsValsIndex++;
|
|
crcMask |= mask;
|
|
}
|
|
|
|
folderIndex++;
|
|
}
|
|
else
|
|
{
|
|
UInt64 v;
|
|
RINOK(ReadNumber(&ssi.sdSizes, &v));
|
|
unpackPos += v;
|
|
if (unpackPos < v)
|
|
return SZ_ERROR_ARCHIVE;
|
|
if (allDigestsDefined || (digestsDefs && SzBitArray_Check(digestsDefs, digestIndex)))
|
|
{
|
|
p->CRCs.Vals[i] = GetUi32(digestsVals + (size_t)digestsValsIndex * 4);
|
|
digestsValsIndex++;
|
|
crcMask |= mask;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mask != 0x80)
|
|
{
|
|
UInt32 byteIndex = (i - 1) >> 3;
|
|
p->IsDirs[byteIndex] = isDirMask;
|
|
p->CRCs.Defs[byteIndex] = crcMask;
|
|
}
|
|
|
|
p->UnpackPositions[i] = unpackPos;
|
|
|
|
if (remSubStreams != 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
|
|
for (;;)
|
|
{
|
|
p->FolderToFile[folderIndex] = i;
|
|
if (folderIndex >= p->db.NumFolders)
|
|
break;
|
|
if (!ssi.sdNumSubStreams.Data)
|
|
return SZ_ERROR_ARCHIVE;
|
|
RINOK(SzReadNumber32(&ssi.sdNumSubStreams, &numSubStreams));
|
|
if (numSubStreams != 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
/*
|
|
{
|
|
UInt64 folderUnpackSize = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
|
|
unpackPos += folderUnpackSize;
|
|
if (unpackPos < folderUnpackSize)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
*/
|
|
folderIndex++;
|
|
}
|
|
|
|
if (ssi.sdNumSubStreams.Data && ssi.sdNumSubStreams.Size != 0)
|
|
return SZ_ERROR_ARCHIVE;
|
|
}
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
static SRes SzReadHeader(
|
|
CSzArEx *p,
|
|
CSzData *sd,
|
|
ILookInStream *inStream,
|
|
ISzAllocPtr allocMain,
|
|
ISzAllocPtr allocTemp)
|
|
{
|
|
UInt32 i;
|
|
UInt32 numTempBufs = 0;
|
|
SRes res;
|
|
CBuf tempBufs[NUM_ADDITIONAL_STREAMS_MAX];
|
|
|
|
for (i = 0; i < NUM_ADDITIONAL_STREAMS_MAX; i++)
|
|
Buf_Init(tempBufs + i);
|
|
|
|
res = SzReadHeader2(p, sd, inStream,
|
|
tempBufs, &numTempBufs,
|
|
allocMain, allocTemp);
|
|
|
|
for (i = 0; i < NUM_ADDITIONAL_STREAMS_MAX; i++)
|
|
Buf_Free(tempBufs + i, allocTemp);
|
|
|
|
RINOK(res);
|
|
|
|
if (sd->Size != 0)
|
|
return SZ_ERROR_FAIL;
|
|
|
|
return res;
|
|
}
|
|
|
|
static SRes SzArEx_Open2(
|
|
CSzArEx *p,
|
|
ILookInStream *inStream,
|
|
ISzAllocPtr allocMain,
|
|
ISzAllocPtr allocTemp)
|
|
{
|
|
Byte header[k7zStartHeaderSize];
|
|
Int64 startArcPos;
|
|
UInt64 nextHeaderOffset, nextHeaderSize;
|
|
size_t nextHeaderSizeT;
|
|
UInt32 nextHeaderCRC;
|
|
CBuf buf;
|
|
SRes res;
|
|
|
|
startArcPos = 0;
|
|
RINOK(ILookInStream_Seek(inStream, &startArcPos, SZ_SEEK_CUR));
|
|
|
|
RINOK(LookInStream_Read2(inStream, header, k7zStartHeaderSize, SZ_ERROR_NO_ARCHIVE));
|
|
|
|
if (!TestSignatureCandidate(header))
|
|
return SZ_ERROR_NO_ARCHIVE;
|
|
if (header[6] != k7zMajorVersion)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
nextHeaderOffset = GetUi64(header + 12);
|
|
nextHeaderSize = GetUi64(header + 20);
|
|
nextHeaderCRC = GetUi32(header + 28);
|
|
|
|
p->startPosAfterHeader = startArcPos + k7zStartHeaderSize;
|
|
|
|
if (CrcCalc(header + 12, 20) != GetUi32(header + 8))
|
|
return SZ_ERROR_CRC;
|
|
|
|
nextHeaderSizeT = (size_t)nextHeaderSize;
|
|
if (nextHeaderSizeT != nextHeaderSize)
|
|
return SZ_ERROR_MEM;
|
|
if (nextHeaderSizeT == 0)
|
|
return SZ_OK;
|
|
if (nextHeaderOffset > nextHeaderOffset + nextHeaderSize ||
|
|
nextHeaderOffset > nextHeaderOffset + nextHeaderSize + k7zStartHeaderSize)
|
|
return SZ_ERROR_NO_ARCHIVE;
|
|
|
|
{
|
|
Int64 pos = 0;
|
|
RINOK(ILookInStream_Seek(inStream, &pos, SZ_SEEK_END));
|
|
if ((UInt64)pos < startArcPos + nextHeaderOffset ||
|
|
(UInt64)pos < startArcPos + k7zStartHeaderSize + nextHeaderOffset ||
|
|
(UInt64)pos < startArcPos + k7zStartHeaderSize + nextHeaderOffset + nextHeaderSize)
|
|
return SZ_ERROR_INPUT_EOF;
|
|
}
|
|
|
|
RINOK(LookInStream_SeekTo(inStream, startArcPos + k7zStartHeaderSize + nextHeaderOffset));
|
|
|
|
if (!Buf_Create(&buf, nextHeaderSizeT, allocTemp))
|
|
return SZ_ERROR_MEM;
|
|
|
|
res = LookInStream_Read(inStream, buf.data, nextHeaderSizeT);
|
|
|
|
if (res == SZ_OK)
|
|
{
|
|
res = SZ_ERROR_ARCHIVE;
|
|
if (CrcCalc(buf.data, nextHeaderSizeT) == nextHeaderCRC)
|
|
{
|
|
CSzData sd;
|
|
UInt64 type;
|
|
sd.Data = buf.data;
|
|
sd.Size = buf.size;
|
|
|
|
res = ReadID(&sd, &type);
|
|
|
|
if (res == SZ_OK && type == k7zIdEncodedHeader)
|
|
{
|
|
CSzAr tempAr;
|
|
CBuf tempBuf;
|
|
Buf_Init(&tempBuf);
|
|
|
|
SzAr_Init(&tempAr);
|
|
res = SzReadAndDecodePackedStreams(inStream, &sd, &tempBuf, 1, p->startPosAfterHeader, &tempAr, allocTemp);
|
|
SzAr_Free(&tempAr, allocTemp);
|
|
|
|
if (res != SZ_OK)
|
|
{
|
|
Buf_Free(&tempBuf, allocTemp);
|
|
}
|
|
else
|
|
{
|
|
Buf_Free(&buf, allocTemp);
|
|
buf.data = tempBuf.data;
|
|
buf.size = tempBuf.size;
|
|
sd.Data = buf.data;
|
|
sd.Size = buf.size;
|
|
res = ReadID(&sd, &type);
|
|
}
|
|
}
|
|
|
|
if (res == SZ_OK)
|
|
{
|
|
if (type == k7zIdHeader)
|
|
{
|
|
/*
|
|
CSzData sd2;
|
|
unsigned ttt;
|
|
for (ttt = 0; ttt < 40000; ttt++)
|
|
{
|
|
SzArEx_Free(p, allocMain);
|
|
sd2 = sd;
|
|
res = SzReadHeader(p, &sd2, inStream, allocMain, allocTemp);
|
|
if (res != SZ_OK)
|
|
break;
|
|
}
|
|
*/
|
|
res = SzReadHeader(p, &sd, inStream, allocMain, allocTemp);
|
|
}
|
|
else
|
|
res = SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
}
|
|
}
|
|
|
|
Buf_Free(&buf, allocTemp);
|
|
return res;
|
|
}
|
|
|
|
|
|
SRes SzArEx_Open(CSzArEx *p, ILookInStream *inStream,
|
|
ISzAllocPtr allocMain, ISzAllocPtr allocTemp)
|
|
{
|
|
SRes res = SzArEx_Open2(p, inStream, allocMain, allocTemp);
|
|
if (res != SZ_OK)
|
|
SzArEx_Free(p, allocMain);
|
|
return res;
|
|
}
|
|
|
|
|
|
SRes SzArEx_Extract(
|
|
const CSzArEx *p,
|
|
ILookInStream *inStream,
|
|
UInt32 fileIndex,
|
|
UInt32 *blockIndex,
|
|
Byte **tempBuf,
|
|
size_t *outBufferSize,
|
|
size_t *offset,
|
|
size_t *outSizeProcessed,
|
|
ISzAllocPtr allocMain,
|
|
ISzAllocPtr allocTemp)
|
|
{
|
|
UInt32 folderIndex = p->FileToFolder[fileIndex];
|
|
SRes res = SZ_OK;
|
|
|
|
*offset = 0;
|
|
*outSizeProcessed = 0;
|
|
|
|
if (folderIndex == (UInt32)-1)
|
|
{
|
|
ISzAlloc_Free(allocMain, *tempBuf);
|
|
*blockIndex = folderIndex;
|
|
*tempBuf = NULL;
|
|
*outBufferSize = 0;
|
|
return SZ_OK;
|
|
}
|
|
|
|
if (*tempBuf == NULL || *blockIndex != folderIndex)
|
|
{
|
|
UInt64 unpackSizeSpec = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
|
|
/*
|
|
UInt64 unpackSizeSpec =
|
|
p->UnpackPositions[p->FolderToFile[(size_t)folderIndex + 1]] -
|
|
p->UnpackPositions[p->FolderToFile[folderIndex]];
|
|
*/
|
|
size_t unpackSize = (size_t)unpackSizeSpec;
|
|
|
|
if (unpackSize != unpackSizeSpec)
|
|
return SZ_ERROR_MEM;
|
|
*blockIndex = folderIndex;
|
|
ISzAlloc_Free(allocMain, *tempBuf);
|
|
*tempBuf = NULL;
|
|
|
|
if (res == SZ_OK)
|
|
{
|
|
*outBufferSize = unpackSize;
|
|
if (unpackSize != 0)
|
|
{
|
|
*tempBuf = (Byte *)ISzAlloc_Alloc(allocMain, unpackSize);
|
|
if (*tempBuf == NULL)
|
|
res = SZ_ERROR_MEM;
|
|
}
|
|
|
|
if (res == SZ_OK)
|
|
{
|
|
res = SzAr_DecodeFolder(&p->db, folderIndex,
|
|
inStream, p->dataPos, *tempBuf, unpackSize, allocTemp);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (res == SZ_OK)
|
|
{
|
|
UInt64 unpackPos = p->UnpackPositions[fileIndex];
|
|
*offset = (size_t)(unpackPos - p->UnpackPositions[p->FolderToFile[folderIndex]]);
|
|
*outSizeProcessed = (size_t)(p->UnpackPositions[(size_t)fileIndex + 1] - unpackPos);
|
|
if (*offset + *outSizeProcessed > *outBufferSize)
|
|
return SZ_ERROR_FAIL;
|
|
if (SzBitWithVals_Check(&p->CRCs, fileIndex))
|
|
if (CrcCalc(*tempBuf + *offset, *outSizeProcessed) != p->CRCs.Vals[fileIndex])
|
|
res = SZ_ERROR_CRC;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
size_t SzArEx_GetFileNameUtf16(const CSzArEx *p, size_t fileIndex, UInt16 *dest)
|
|
{
|
|
size_t offs = p->FileNameOffsets[fileIndex];
|
|
size_t len = p->FileNameOffsets[fileIndex + 1] - offs;
|
|
if (dest != 0)
|
|
{
|
|
size_t i;
|
|
const Byte *src = p->FileNames + offs * 2;
|
|
for (i = 0; i < len; i++)
|
|
dest[i] = GetUi16(src + i * 2);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
size_t SzArEx_GetFullNameLen(const CSzArEx *p, size_t fileIndex)
|
|
{
|
|
size_t len;
|
|
if (!p->FileNameOffsets)
|
|
return 1;
|
|
len = 0;
|
|
for (;;)
|
|
{
|
|
UInt32 parent = (UInt32)(Int32)-1;
|
|
len += p->FileNameOffsets[fileIndex + 1] - p->FileNameOffsets[fileIndex];
|
|
if SzBitWithVals_Check(&p->Parents, fileIndex)
|
|
parent = p->Parents.Vals[fileIndex];
|
|
if (parent == (UInt32)(Int32)-1)
|
|
return len;
|
|
fileIndex = parent;
|
|
}
|
|
}
|
|
|
|
UInt16 *SzArEx_GetFullNameUtf16_Back(const CSzArEx *p, size_t fileIndex, UInt16 *dest)
|
|
{
|
|
BoolInt needSlash;
|
|
if (!p->FileNameOffsets)
|
|
{
|
|
*(--dest) = 0;
|
|
return dest;
|
|
}
|
|
needSlash = False;
|
|
for (;;)
|
|
{
|
|
UInt32 parent = (UInt32)(Int32)-1;
|
|
size_t curLen = p->FileNameOffsets[fileIndex + 1] - p->FileNameOffsets[fileIndex];
|
|
SzArEx_GetFileNameUtf16(p, fileIndex, dest - curLen);
|
|
if (needSlash)
|
|
*(dest - 1) = '/';
|
|
needSlash = True;
|
|
dest -= curLen;
|
|
|
|
if SzBitWithVals_Check(&p->Parents, fileIndex)
|
|
parent = p->Parents.Vals[fileIndex];
|
|
if (parent == (UInt32)(Int32)-1)
|
|
return dest;
|
|
fileIndex = parent;
|
|
}
|
|
}
|
|
*/
|