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// MubHandler.cpp
#include "StdAfx.h"
#include "../../../C/CpuArch.h"
#include "Common/ComTry.h"
#include "Windows/PropVariant.h"
#include "../Common/LimitedStreams.h"
#include "../Common/ProgressUtils.h"
#include "../Common/RegisterArc.h"
#include "../Common/StreamUtils.h"
#include "../Compress/CopyCoder.h"
#define Get32(p) GetBe32(p)
namespace NArchive {
namespace NMub {
struct CItem
{
UInt32 Type;
UInt32 SubType;
UInt64 Offset;
UInt64 Size;
UInt32 Align;
bool IsTail;
};
const UInt32 kNumFilesMax = 10;
class CHandler:
public IInArchive,
public IInArchiveGetStream,
public CMyUnknownImp
{
UInt64 _startPos;
CMyComPtr<IInStream> _stream;
UInt32 _numItems;
CItem _items[kNumFilesMax + 1];
HRESULT Open2(IInStream *stream);
public:
MY_UNKNOWN_IMP2(IInArchive, IInArchiveGetStream)
INTERFACE_IInArchive(;)
STDMETHOD(GetStream)(UInt32 index, ISequentialInStream **stream);
};
STATPROPSTG kProps[] =
{
{ NULL, kpidSize, VT_UI8}
};
IMP_IInArchive_Props
IMP_IInArchive_ArcProps_NO
#define MACH_ARCH_ABI64 0x1000000
#define MACH_MACHINE_386 7
#define MACH_MACHINE_ARM 12
#define MACH_MACHINE_SPARC 14
#define MACH_MACHINE_PPC 18
#define MACH_MACHINE_PPC64 (MACH_MACHINE_PPC | MACH_ARCH_ABI64)
#define MACH_MACHINE_AMD64 (MACH_MACHINE_386 | MACH_ARCH_ABI64)
STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
NWindows::NCOM::CPropVariant prop;
const CItem &item = _items[index];
switch(propID)
{
case kpidExtension:
{
const wchar_t *ext;
if (item.IsTail)
ext = L"tail";
else
{
switch(item.Type)
{
case MACH_MACHINE_386: ext = L"86"; break;
case MACH_MACHINE_ARM: ext = L"arm"; break;
case MACH_MACHINE_SPARC: ext = L"sparc"; break;
case MACH_MACHINE_PPC: ext = L"ppc"; break;
case MACH_MACHINE_PPC64: ext = L"ppc64"; break;
case MACH_MACHINE_AMD64: ext = L"x64"; break;
default: ext = L"unknown"; break;
}
}
prop = ext;
break;
}
case kpidSize:
case kpidPackSize:
prop = (UInt64)item.Size;
break;
}
prop.Detach(value);
return S_OK;
}
#define MACH_TYPE_ABI64 (1 << 24)
#define MACH_SUBTYPE_ABI64 (1 << 31)
HRESULT CHandler::Open2(IInStream *stream)
{
RINOK(stream->Seek(0, STREAM_SEEK_SET, &_startPos));
const UInt32 kHeaderSize = 8;
const UInt32 kRecordSize = 5 * 4;
const UInt32 kBufSize = kHeaderSize + kNumFilesMax * kRecordSize;
Byte buf[kBufSize];
size_t processed = kBufSize;
RINOK(ReadStream(stream, buf, &processed));
if (processed < kHeaderSize)
return S_FALSE;
UInt32 num = Get32(buf + 4);
if (Get32(buf) != 0xCAFEBABE || num > kNumFilesMax || processed < kHeaderSize + num * kRecordSize)
return S_FALSE;
UInt64 endPosMax = kHeaderSize;
for (UInt32 i = 0; i < num; i++)
{
const Byte *p = buf + kHeaderSize + i * kRecordSize;
CItem &sb = _items[i];
sb.IsTail = false;
sb.Type = Get32(p);
sb.SubType = Get32(p + 4);
sb.Offset = Get32(p + 8);
sb.Size = Get32(p + 12);
sb.Align = Get32(p + 16);
if ((sb.Type & ~MACH_TYPE_ABI64) >= 0x100 ||
(sb.SubType & ~MACH_SUBTYPE_ABI64) >= 0x100 ||
sb.Align > 31)
return S_FALSE;
UInt64 endPos = (UInt64)sb.Offset + sb.Size;
if (endPos > endPosMax)
endPosMax = endPos;
}
UInt64 fileSize;
RINOK(stream->Seek(0, STREAM_SEEK_END, &fileSize));
fileSize -= _startPos;
_numItems = num;
if (fileSize > endPosMax)
{
CItem &sb = _items[_numItems++];
sb.IsTail = true;
sb.Type = 0;
sb.SubType = 0;
sb.Offset = endPosMax;
sb.Size = fileSize - endPosMax;
sb.Align = 0;
}
return S_OK;
}
STDMETHODIMP CHandler::Open(IInStream *inStream,
const UInt64 * /* maxCheckStartPosition */,
IArchiveOpenCallback * /* openArchiveCallback */)
{
COM_TRY_BEGIN
Close();
try
{
if (Open2(inStream) != S_OK)
return S_FALSE;
_stream = inStream;
}
catch(...) { return S_FALSE; }
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Close()
{
_stream.Release();
_numItems = 0;
return S_OK;
}
STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
{
*numItems = _numItems;
return S_OK;
}
STDMETHODIMP CHandler::Extract(const UInt32 *indices, UInt32 numItems,
Int32 testMode, IArchiveExtractCallback *extractCallback)
{
COM_TRY_BEGIN
bool allFilesMode = (numItems == (UInt32)-1);
if (allFilesMode)
numItems = _numItems;
if (numItems == 0)
return S_OK;
UInt64 totalSize = 0;
UInt32 i;
for (i = 0; i < numItems; i++)
totalSize += _items[allFilesMode ? i : indices[i]].Size;
extractCallback->SetTotal(totalSize);
UInt64 currentTotalSize = 0;
NCompress::CCopyCoder *copyCoderSpec = new NCompress::CCopyCoder();
CMyComPtr<ICompressCoder> copyCoder = copyCoderSpec;
CLocalProgress *lps = new CLocalProgress;
CMyComPtr<ICompressProgressInfo> progress = lps;
lps->Init(extractCallback, false);
CLimitedSequentialInStream *streamSpec = new CLimitedSequentialInStream;
CMyComPtr<ISequentialInStream> inStream(streamSpec);
streamSpec->SetStream(_stream);
for (i = 0; i < numItems; i++)
{
lps->InSize = lps->OutSize = currentTotalSize;
RINOK(lps->SetCur());
CMyComPtr<ISequentialOutStream> realOutStream;
Int32 askMode = testMode ?
NExtract::NAskMode::kTest :
NExtract::NAskMode::kExtract;
UInt32 index = allFilesMode ? i : indices[i];
const CItem &item = _items[index];
RINOK(extractCallback->GetStream(index, &realOutStream, askMode));
currentTotalSize += item.Size;
if (!testMode && !realOutStream)
continue;
RINOK(extractCallback->PrepareOperation(askMode));
if (testMode)
{
RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kOK));
continue;
}
RINOK(_stream->Seek(_startPos + item.Offset, STREAM_SEEK_SET, NULL));
streamSpec->Init(item.Size);
RINOK(copyCoder->Code(inStream, realOutStream, NULL, NULL, progress));
realOutStream.Release();
RINOK(extractCallback->SetOperationResult((copyCoderSpec->TotalSize == item.Size) ?
NExtract::NOperationResult::kOK:
NExtract::NOperationResult::kDataError));
}
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::GetStream(UInt32 index, ISequentialInStream **stream)
{
COM_TRY_BEGIN
const CItem &item = _items[index];
return CreateLimitedInStream(_stream, _startPos + item.Offset, item.Size, stream);
COM_TRY_END
}
static IInArchive *CreateArc() { return new CHandler; }
static CArcInfo g_ArcInfo =
{ L"Mub", L"", 0, 0xE2, { 0xCA, 0xFE, 0xBA, 0xBE, 0, 0, 0 }, 7, false, CreateArc, 0 };
REGISTER_ARC(Mub)
}}
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