mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-30 21:31:03 +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.
591 lines
15 KiB
C
591 lines
15 KiB
C
/* 7zDec.c -- Decoding from 7z folder
|
|
2019-02-02 : Igor Pavlov : Public domain */
|
|
|
|
#include "Precomp.h"
|
|
|
|
#include <string.h>
|
|
|
|
/* #define _7ZIP_PPMD_SUPPPORT */
|
|
|
|
#include "7z.h"
|
|
#include "7zCrc.h"
|
|
|
|
#include "Bcj2.h"
|
|
#include "Bra.h"
|
|
#include "CpuArch.h"
|
|
#include "Delta.h"
|
|
#include "LzmaDec.h"
|
|
#include "Lzma2Dec.h"
|
|
#ifdef _7ZIP_PPMD_SUPPPORT
|
|
#include "Ppmd7.h"
|
|
#endif
|
|
|
|
#define k_Copy 0
|
|
#define k_Delta 3
|
|
#define k_LZMA2 0x21
|
|
#define k_LZMA 0x30101
|
|
#define k_BCJ 0x3030103
|
|
#define k_BCJ2 0x303011B
|
|
#define k_PPC 0x3030205
|
|
#define k_IA64 0x3030401
|
|
#define k_ARM 0x3030501
|
|
#define k_ARMT 0x3030701
|
|
#define k_SPARC 0x3030805
|
|
|
|
|
|
#ifdef _7ZIP_PPMD_SUPPPORT
|
|
|
|
#define k_PPMD 0x30401
|
|
|
|
typedef struct
|
|
{
|
|
IByteIn vt;
|
|
const Byte *cur;
|
|
const Byte *end;
|
|
const Byte *begin;
|
|
UInt64 processed;
|
|
BoolInt extra;
|
|
SRes res;
|
|
const ILookInStream *inStream;
|
|
} CByteInToLook;
|
|
|
|
static Byte ReadByte(const IByteIn *pp)
|
|
{
|
|
CByteInToLook *p = CONTAINER_FROM_VTBL(pp, CByteInToLook, vt);
|
|
if (p->cur != p->end)
|
|
return *p->cur++;
|
|
if (p->res == SZ_OK)
|
|
{
|
|
size_t size = p->cur - p->begin;
|
|
p->processed += size;
|
|
p->res = ILookInStream_Skip(p->inStream, size);
|
|
size = (1 << 25);
|
|
p->res = ILookInStream_Look(p->inStream, (const void **)&p->begin, &size);
|
|
p->cur = p->begin;
|
|
p->end = p->begin + size;
|
|
if (size != 0)
|
|
return *p->cur++;;
|
|
}
|
|
p->extra = True;
|
|
return 0;
|
|
}
|
|
|
|
static SRes SzDecodePpmd(const Byte *props, unsigned propsSize, UInt64 inSize, const ILookInStream *inStream,
|
|
Byte *outBuffer, SizeT outSize, ISzAllocPtr allocMain)
|
|
{
|
|
CPpmd7 ppmd;
|
|
CByteInToLook s;
|
|
SRes res = SZ_OK;
|
|
|
|
s.vt.Read = ReadByte;
|
|
s.inStream = inStream;
|
|
s.begin = s.end = s.cur = NULL;
|
|
s.extra = False;
|
|
s.res = SZ_OK;
|
|
s.processed = 0;
|
|
|
|
if (propsSize != 5)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
{
|
|
unsigned order = props[0];
|
|
UInt32 memSize = GetUi32(props + 1);
|
|
if (order < PPMD7_MIN_ORDER ||
|
|
order > PPMD7_MAX_ORDER ||
|
|
memSize < PPMD7_MIN_MEM_SIZE ||
|
|
memSize > PPMD7_MAX_MEM_SIZE)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
Ppmd7_Construct(&ppmd);
|
|
if (!Ppmd7_Alloc(&ppmd, memSize, allocMain))
|
|
return SZ_ERROR_MEM;
|
|
Ppmd7_Init(&ppmd, order);
|
|
}
|
|
{
|
|
CPpmd7z_RangeDec rc;
|
|
Ppmd7z_RangeDec_CreateVTable(&rc);
|
|
rc.Stream = &s.vt;
|
|
if (!Ppmd7z_RangeDec_Init(&rc))
|
|
res = SZ_ERROR_DATA;
|
|
else if (s.extra)
|
|
res = (s.res != SZ_OK ? s.res : SZ_ERROR_DATA);
|
|
else
|
|
{
|
|
SizeT i;
|
|
for (i = 0; i < outSize; i++)
|
|
{
|
|
int sym = Ppmd7_DecodeSymbol(&ppmd, &rc.vt);
|
|
if (s.extra || sym < 0)
|
|
break;
|
|
outBuffer[i] = (Byte)sym;
|
|
}
|
|
if (i != outSize)
|
|
res = (s.res != SZ_OK ? s.res : SZ_ERROR_DATA);
|
|
else if (s.processed + (s.cur - s.begin) != inSize || !Ppmd7z_RangeDec_IsFinishedOK(&rc))
|
|
res = SZ_ERROR_DATA;
|
|
}
|
|
}
|
|
Ppmd7_Free(&ppmd, allocMain);
|
|
return res;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static SRes SzDecodeLzma(const Byte *props, unsigned propsSize, UInt64 inSize, ILookInStream *inStream,
|
|
Byte *outBuffer, SizeT outSize, ISzAllocPtr allocMain)
|
|
{
|
|
CLzmaDec state;
|
|
SRes res = SZ_OK;
|
|
|
|
LzmaDec_Construct(&state);
|
|
RINOK(LzmaDec_AllocateProbs(&state, props, propsSize, allocMain));
|
|
state.dic = outBuffer;
|
|
state.dicBufSize = outSize;
|
|
LzmaDec_Init(&state);
|
|
|
|
for (;;)
|
|
{
|
|
const void *inBuf = NULL;
|
|
size_t lookahead = (1 << 18);
|
|
if (lookahead > inSize)
|
|
lookahead = (size_t)inSize;
|
|
res = ILookInStream_Look(inStream, &inBuf, &lookahead);
|
|
if (res != SZ_OK)
|
|
break;
|
|
|
|
{
|
|
SizeT inProcessed = (SizeT)lookahead, dicPos = state.dicPos;
|
|
ELzmaStatus status;
|
|
res = LzmaDec_DecodeToDic(&state, outSize, (const Byte *)inBuf, &inProcessed, LZMA_FINISH_END, &status);
|
|
lookahead -= inProcessed;
|
|
inSize -= inProcessed;
|
|
if (res != SZ_OK)
|
|
break;
|
|
|
|
if (status == LZMA_STATUS_FINISHED_WITH_MARK)
|
|
{
|
|
if (outSize != state.dicPos || inSize != 0)
|
|
res = SZ_ERROR_DATA;
|
|
break;
|
|
}
|
|
|
|
if (outSize == state.dicPos && inSize == 0 && status == LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK)
|
|
break;
|
|
|
|
if (inProcessed == 0 && dicPos == state.dicPos)
|
|
{
|
|
res = SZ_ERROR_DATA;
|
|
break;
|
|
}
|
|
|
|
res = ILookInStream_Skip(inStream, inProcessed);
|
|
if (res != SZ_OK)
|
|
break;
|
|
}
|
|
}
|
|
|
|
LzmaDec_FreeProbs(&state, allocMain);
|
|
return res;
|
|
}
|
|
|
|
|
|
#ifndef _7Z_NO_METHOD_LZMA2
|
|
|
|
static SRes SzDecodeLzma2(const Byte *props, unsigned propsSize, UInt64 inSize, ILookInStream *inStream,
|
|
Byte *outBuffer, SizeT outSize, ISzAllocPtr allocMain)
|
|
{
|
|
CLzma2Dec state;
|
|
SRes res = SZ_OK;
|
|
|
|
Lzma2Dec_Construct(&state);
|
|
if (propsSize != 1)
|
|
return SZ_ERROR_DATA;
|
|
RINOK(Lzma2Dec_AllocateProbs(&state, props[0], allocMain));
|
|
state.decoder.dic = outBuffer;
|
|
state.decoder.dicBufSize = outSize;
|
|
Lzma2Dec_Init(&state);
|
|
|
|
for (;;)
|
|
{
|
|
const void *inBuf = NULL;
|
|
size_t lookahead = (1 << 18);
|
|
if (lookahead > inSize)
|
|
lookahead = (size_t)inSize;
|
|
res = ILookInStream_Look(inStream, &inBuf, &lookahead);
|
|
if (res != SZ_OK)
|
|
break;
|
|
|
|
{
|
|
SizeT inProcessed = (SizeT)lookahead, dicPos = state.decoder.dicPos;
|
|
ELzmaStatus status;
|
|
res = Lzma2Dec_DecodeToDic(&state, outSize, (const Byte *)inBuf, &inProcessed, LZMA_FINISH_END, &status);
|
|
lookahead -= inProcessed;
|
|
inSize -= inProcessed;
|
|
if (res != SZ_OK)
|
|
break;
|
|
|
|
if (status == LZMA_STATUS_FINISHED_WITH_MARK)
|
|
{
|
|
if (outSize != state.decoder.dicPos || inSize != 0)
|
|
res = SZ_ERROR_DATA;
|
|
break;
|
|
}
|
|
|
|
if (inProcessed == 0 && dicPos == state.decoder.dicPos)
|
|
{
|
|
res = SZ_ERROR_DATA;
|
|
break;
|
|
}
|
|
|
|
res = ILookInStream_Skip(inStream, inProcessed);
|
|
if (res != SZ_OK)
|
|
break;
|
|
}
|
|
}
|
|
|
|
Lzma2Dec_FreeProbs(&state, allocMain);
|
|
return res;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static SRes SzDecodeCopy(UInt64 inSize, ILookInStream *inStream, Byte *outBuffer)
|
|
{
|
|
while (inSize > 0)
|
|
{
|
|
const void *inBuf;
|
|
size_t curSize = (1 << 18);
|
|
if (curSize > inSize)
|
|
curSize = (size_t)inSize;
|
|
RINOK(ILookInStream_Look(inStream, &inBuf, &curSize));
|
|
if (curSize == 0)
|
|
return SZ_ERROR_INPUT_EOF;
|
|
memcpy(outBuffer, inBuf, curSize);
|
|
outBuffer += curSize;
|
|
inSize -= curSize;
|
|
RINOK(ILookInStream_Skip(inStream, curSize));
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
static BoolInt IS_MAIN_METHOD(UInt32 m)
|
|
{
|
|
switch (m)
|
|
{
|
|
case k_Copy:
|
|
case k_LZMA:
|
|
#ifndef _7Z_NO_METHOD_LZMA2
|
|
case k_LZMA2:
|
|
#endif
|
|
#ifdef _7ZIP_PPMD_SUPPPORT
|
|
case k_PPMD:
|
|
#endif
|
|
return True;
|
|
}
|
|
return False;
|
|
}
|
|
|
|
static BoolInt IS_SUPPORTED_CODER(const CSzCoderInfo *c)
|
|
{
|
|
return
|
|
c->NumStreams == 1
|
|
/* && c->MethodID <= (UInt32)0xFFFFFFFF */
|
|
&& IS_MAIN_METHOD((UInt32)c->MethodID);
|
|
}
|
|
|
|
#define IS_BCJ2(c) ((c)->MethodID == k_BCJ2 && (c)->NumStreams == 4)
|
|
|
|
static SRes CheckSupportedFolder(const CSzFolder *f)
|
|
{
|
|
if (f->NumCoders < 1 || f->NumCoders > 4)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (!IS_SUPPORTED_CODER(&f->Coders[0]))
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (f->NumCoders == 1)
|
|
{
|
|
if (f->NumPackStreams != 1 || f->PackStreams[0] != 0 || f->NumBonds != 0)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
#ifndef _7Z_NO_METHODS_FILTERS
|
|
|
|
if (f->NumCoders == 2)
|
|
{
|
|
const CSzCoderInfo *c = &f->Coders[1];
|
|
if (
|
|
/* c->MethodID > (UInt32)0xFFFFFFFF || */
|
|
c->NumStreams != 1
|
|
|| f->NumPackStreams != 1
|
|
|| f->PackStreams[0] != 0
|
|
|| f->NumBonds != 1
|
|
|| f->Bonds[0].InIndex != 1
|
|
|| f->Bonds[0].OutIndex != 0)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
switch ((UInt32)c->MethodID)
|
|
{
|
|
case k_Delta:
|
|
case k_BCJ:
|
|
case k_PPC:
|
|
case k_IA64:
|
|
case k_SPARC:
|
|
case k_ARM:
|
|
case k_ARMT:
|
|
break;
|
|
default:
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
if (f->NumCoders == 4)
|
|
{
|
|
if (!IS_SUPPORTED_CODER(&f->Coders[1])
|
|
|| !IS_SUPPORTED_CODER(&f->Coders[2])
|
|
|| !IS_BCJ2(&f->Coders[3]))
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
if (f->NumPackStreams != 4
|
|
|| f->PackStreams[0] != 2
|
|
|| f->PackStreams[1] != 6
|
|
|| f->PackStreams[2] != 1
|
|
|| f->PackStreams[3] != 0
|
|
|| f->NumBonds != 3
|
|
|| f->Bonds[0].InIndex != 5 || f->Bonds[0].OutIndex != 0
|
|
|| f->Bonds[1].InIndex != 4 || f->Bonds[1].OutIndex != 1
|
|
|| f->Bonds[2].InIndex != 3 || f->Bonds[2].OutIndex != 2)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
return SZ_OK;
|
|
}
|
|
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
|
|
#define CASE_BRA_CONV(isa) case k_ ## isa: isa ## _Convert(outBuffer, outSize, 0, 0); break;
|
|
|
|
static SRes SzFolder_Decode2(const CSzFolder *folder,
|
|
const Byte *propsData,
|
|
const UInt64 *unpackSizes,
|
|
const UInt64 *packPositions,
|
|
ILookInStream *inStream, UInt64 startPos,
|
|
Byte *outBuffer, SizeT outSize, ISzAllocPtr allocMain,
|
|
Byte *tempBuf[])
|
|
{
|
|
UInt32 ci;
|
|
SizeT tempSizes[3] = { 0, 0, 0};
|
|
SizeT tempSize3 = 0;
|
|
Byte *tempBuf3 = 0;
|
|
|
|
RINOK(CheckSupportedFolder(folder));
|
|
|
|
for (ci = 0; ci < folder->NumCoders; ci++)
|
|
{
|
|
const CSzCoderInfo *coder = &folder->Coders[ci];
|
|
|
|
if (IS_MAIN_METHOD((UInt32)coder->MethodID))
|
|
{
|
|
UInt32 si = 0;
|
|
UInt64 offset;
|
|
UInt64 inSize;
|
|
Byte *outBufCur = outBuffer;
|
|
SizeT outSizeCur = outSize;
|
|
if (folder->NumCoders == 4)
|
|
{
|
|
UInt32 indices[] = { 3, 2, 0 };
|
|
UInt64 unpackSize = unpackSizes[ci];
|
|
si = indices[ci];
|
|
if (ci < 2)
|
|
{
|
|
Byte *temp;
|
|
outSizeCur = (SizeT)unpackSize;
|
|
if (outSizeCur != unpackSize)
|
|
return SZ_ERROR_MEM;
|
|
temp = (Byte *)ISzAlloc_Alloc(allocMain, outSizeCur);
|
|
if (!temp && outSizeCur != 0)
|
|
return SZ_ERROR_MEM;
|
|
outBufCur = tempBuf[1 - ci] = temp;
|
|
tempSizes[1 - ci] = outSizeCur;
|
|
}
|
|
else if (ci == 2)
|
|
{
|
|
if (unpackSize > outSize) /* check it */
|
|
return SZ_ERROR_PARAM;
|
|
tempBuf3 = outBufCur = outBuffer + (outSize - (size_t)unpackSize);
|
|
tempSize3 = outSizeCur = (SizeT)unpackSize;
|
|
}
|
|
else
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
offset = packPositions[si];
|
|
inSize = packPositions[(size_t)si + 1] - offset;
|
|
RINOK(LookInStream_SeekTo(inStream, startPos + offset));
|
|
|
|
if (coder->MethodID == k_Copy)
|
|
{
|
|
if (inSize != outSizeCur) /* check it */
|
|
return SZ_ERROR_DATA;
|
|
RINOK(SzDecodeCopy(inSize, inStream, outBufCur));
|
|
}
|
|
else if (coder->MethodID == k_LZMA)
|
|
{
|
|
RINOK(SzDecodeLzma(propsData + coder->PropsOffset, coder->PropsSize, inSize, inStream, outBufCur, outSizeCur, allocMain));
|
|
}
|
|
#ifndef _7Z_NO_METHOD_LZMA2
|
|
else if (coder->MethodID == k_LZMA2)
|
|
{
|
|
RINOK(SzDecodeLzma2(propsData + coder->PropsOffset, coder->PropsSize, inSize, inStream, outBufCur, outSizeCur, allocMain));
|
|
}
|
|
#endif
|
|
#ifdef _7ZIP_PPMD_SUPPPORT
|
|
else if (coder->MethodID == k_PPMD)
|
|
{
|
|
RINOK(SzDecodePpmd(propsData + coder->PropsOffset, coder->PropsSize, inSize, inStream, outBufCur, outSizeCur, allocMain));
|
|
}
|
|
#endif
|
|
else
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
else if (coder->MethodID == k_BCJ2)
|
|
{
|
|
UInt64 offset = packPositions[1];
|
|
UInt64 s3Size = packPositions[2] - offset;
|
|
|
|
if (ci != 3)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
|
|
tempSizes[2] = (SizeT)s3Size;
|
|
if (tempSizes[2] != s3Size)
|
|
return SZ_ERROR_MEM;
|
|
tempBuf[2] = (Byte *)ISzAlloc_Alloc(allocMain, tempSizes[2]);
|
|
if (!tempBuf[2] && tempSizes[2] != 0)
|
|
return SZ_ERROR_MEM;
|
|
|
|
RINOK(LookInStream_SeekTo(inStream, startPos + offset));
|
|
RINOK(SzDecodeCopy(s3Size, inStream, tempBuf[2]));
|
|
|
|
if ((tempSizes[0] & 3) != 0 ||
|
|
(tempSizes[1] & 3) != 0 ||
|
|
tempSize3 + tempSizes[0] + tempSizes[1] != outSize)
|
|
return SZ_ERROR_DATA;
|
|
|
|
{
|
|
CBcj2Dec p;
|
|
|
|
p.bufs[0] = tempBuf3; p.lims[0] = tempBuf3 + tempSize3;
|
|
p.bufs[1] = tempBuf[0]; p.lims[1] = tempBuf[0] + tempSizes[0];
|
|
p.bufs[2] = tempBuf[1]; p.lims[2] = tempBuf[1] + tempSizes[1];
|
|
p.bufs[3] = tempBuf[2]; p.lims[3] = tempBuf[2] + tempSizes[2];
|
|
|
|
p.dest = outBuffer;
|
|
p.destLim = outBuffer + outSize;
|
|
|
|
Bcj2Dec_Init(&p);
|
|
RINOK(Bcj2Dec_Decode(&p));
|
|
|
|
{
|
|
unsigned i;
|
|
for (i = 0; i < 4; i++)
|
|
if (p.bufs[i] != p.lims[i])
|
|
return SZ_ERROR_DATA;
|
|
|
|
if (!Bcj2Dec_IsFinished(&p))
|
|
return SZ_ERROR_DATA;
|
|
|
|
if (p.dest != p.destLim
|
|
|| p.state != BCJ2_STREAM_MAIN)
|
|
return SZ_ERROR_DATA;
|
|
}
|
|
}
|
|
}
|
|
#ifndef _7Z_NO_METHODS_FILTERS
|
|
else if (ci == 1)
|
|
{
|
|
if (coder->MethodID == k_Delta)
|
|
{
|
|
if (coder->PropsSize != 1)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
{
|
|
Byte state[DELTA_STATE_SIZE];
|
|
Delta_Init(state);
|
|
Delta_Decode(state, (unsigned)(propsData[coder->PropsOffset]) + 1, outBuffer, outSize);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (coder->PropsSize != 0)
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
switch (coder->MethodID)
|
|
{
|
|
case k_BCJ:
|
|
{
|
|
UInt32 state;
|
|
x86_Convert_Init(state);
|
|
x86_Convert(outBuffer, outSize, 0, &state, 0);
|
|
break;
|
|
}
|
|
CASE_BRA_CONV(PPC)
|
|
CASE_BRA_CONV(IA64)
|
|
CASE_BRA_CONV(SPARC)
|
|
CASE_BRA_CONV(ARM)
|
|
CASE_BRA_CONV(ARMT)
|
|
default:
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
else
|
|
return SZ_ERROR_UNSUPPORTED;
|
|
}
|
|
|
|
return SZ_OK;
|
|
}
|
|
|
|
|
|
SRes SzAr_DecodeFolder(const CSzAr *p, UInt32 folderIndex,
|
|
ILookInStream *inStream, UInt64 startPos,
|
|
Byte *outBuffer, size_t outSize,
|
|
ISzAllocPtr allocMain)
|
|
{
|
|
SRes res;
|
|
CSzFolder folder;
|
|
CSzData sd;
|
|
|
|
const Byte *data = p->CodersData + p->FoCodersOffsets[folderIndex];
|
|
sd.Data = data;
|
|
sd.Size = p->FoCodersOffsets[(size_t)folderIndex + 1] - p->FoCodersOffsets[folderIndex];
|
|
|
|
res = SzGetNextFolderItem(&folder, &sd);
|
|
|
|
if (res != SZ_OK)
|
|
return res;
|
|
|
|
if (sd.Size != 0
|
|
|| folder.UnpackStream != p->FoToMainUnpackSizeIndex[folderIndex]
|
|
|| outSize != SzAr_GetFolderUnpackSize(p, folderIndex))
|
|
return SZ_ERROR_FAIL;
|
|
{
|
|
unsigned i;
|
|
Byte *tempBuf[3] = { 0, 0, 0};
|
|
|
|
res = SzFolder_Decode2(&folder, data,
|
|
&p->CoderUnpackSizes[p->FoToCoderUnpackSizes[folderIndex]],
|
|
p->PackPositions + p->FoStartPackStreamIndex[folderIndex],
|
|
inStream, startPos,
|
|
outBuffer, (SizeT)outSize, allocMain, tempBuf);
|
|
|
|
for (i = 0; i < 3; i++)
|
|
ISzAlloc_Free(allocMain, tempBuf[i]);
|
|
|
|
if (res == SZ_OK)
|
|
if (SzBitWithVals_Check(&p->FolderCRCs, folderIndex))
|
|
if (CrcCalc(outBuffer, outSize) != p->FolderCRCs.Vals[folderIndex])
|
|
res = SZ_ERROR_CRC;
|
|
|
|
return res;
|
|
}
|
|
}
|