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// MubHandler.cpp
#include "StdAfx.h"
#include "../../../C/CpuArch.h"
#include "../../Common/ComTry.h"
#include "../../Common/IntToString.h"
#include "../../Common/MyString.h"
#include "../../Windows/PropVariant.h"
#include "../Common/RegisterArc.h"
#include "../Common/StreamUtils.h"
#include "HandlerCont.h"
static UInt32 Get32(const Byte *p, bool be) { if (be) return GetBe32(p); return GetUi32(p); }
using namespace NWindows;
using namespace NCOM;
namespace NArchive {
namespace NMub {
#define MACH_CPU_ARCH_ABI64 (1 << 24)
#define MACH_CPU_TYPE_386 7
#define MACH_CPU_TYPE_ARM 12
#define MACH_CPU_TYPE_SPARC 14
#define MACH_CPU_TYPE_PPC 18
#define MACH_CPU_TYPE_PPC64 (MACH_CPU_ARCH_ABI64 | MACH_CPU_TYPE_PPC)
#define MACH_CPU_TYPE_AMD64 (MACH_CPU_ARCH_ABI64 | MACH_CPU_TYPE_386)
#define MACH_CPU_SUBTYPE_LIB64 (1 << 31)
#define MACH_CPU_SUBTYPE_I386_ALL 3
struct CItem
{
UInt32 Type;
UInt32 SubType;
UInt32 Offset;
UInt32 Size;
// UInt32 Align;
};
static const UInt32 kNumFilesMax = 10;
class CHandler: public CHandlerCont
{
// UInt64 _startPos;
UInt64 _phySize;
UInt32 _numItems;
bool _bigEndian;
CItem _items[kNumFilesMax];
HRESULT Open2(IInStream *stream);
virtual int GetItem_ExtractInfo(UInt32 index, UInt64 &pos, UInt64 &size) const
{
const CItem &item = _items[index];
pos = item.Offset;
size = item.Size;
return NExtract::NOperationResult::kOK;
}
public:
INTERFACE_IInArchive_Cont(;)
};
static const Byte kArcProps[] =
{
kpidBigEndian
};
static const Byte kProps[] =
{
kpidSize
};
IMP_IInArchive_Props
IMP_IInArchive_ArcProps
STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
{
PropVariant_Clear(value);
switch (propID)
{
case kpidBigEndian: PropVarEm_Set_Bool(value, _bigEndian); break;
case kpidPhySize: PropVarEm_Set_UInt64(value, _phySize); break;
}
return S_OK;
}
STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
PropVariant_Clear(value);
const CItem &item = _items[index];
switch (propID)
{
case kpidExtension:
{
char temp[32];
const char *ext = 0;
switch (item.Type)
{
case MACH_CPU_TYPE_386: ext = "x86"; break;
case MACH_CPU_TYPE_ARM: ext = "arm"; break;
case MACH_CPU_TYPE_SPARC: ext = "sparc"; break;
case MACH_CPU_TYPE_PPC: ext = "ppc"; break;
case MACH_CPU_TYPE_PPC64: ext = "ppc64"; break;
case MACH_CPU_TYPE_AMD64: ext = "x64"; break;
default:
temp[0] = 'c';
temp[1] = 'p';
temp[2] = 'u';
ConvertUInt32ToString(item.Type, temp + 3);
break;
}
if (ext)
strcpy(temp, ext);
if (item.SubType != 0 && (
item.Type != MACH_CPU_TYPE_386 &&
item.Type != MACH_CPU_TYPE_AMD64 ||
(item.SubType & ~(UInt32)MACH_CPU_SUBTYPE_LIB64) != MACH_CPU_SUBTYPE_I386_ALL))
{
unsigned pos = MyStringLen(temp);
temp[pos++] = '-';
ConvertUInt32ToString(item.SubType, temp + pos);
}
return PropVarEm_Set_Str(value, temp);
}
case kpidSize:
case kpidPackSize:
PropVarEm_Set_UInt64(value, item.Size);
break;
}
return S_OK;
}
HRESULT CHandler::Open2(IInStream *stream)
{
// RINOK(stream->Seek(0, STREAM_SEEK_CUR, &_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;
bool be;
switch (GetBe32(buf))
{
case 0xCAFEBABE: be = true; break;
case 0xB9FAF10E: be = false; break;
default: return S_FALSE;
}
_bigEndian = be;
UInt32 num = Get32(buf + 4, be);
if (num > kNumFilesMax || processed < kHeaderSize + num * kRecordSize)
return S_FALSE;
if (num == 0)
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.Type = Get32(p, be);
sb.SubType = Get32(p + 4, be);
sb.Offset = Get32(p + 8, be);
sb.Size = Get32(p + 12, be);
UInt32 align = Get32(p + 16, be);
if (align > 31)
return S_FALSE;
if (sb.Offset < kHeaderSize + num * kRecordSize)
return S_FALSE;
if ((sb.Type & ~MACH_CPU_ARCH_ABI64) >= 0x100 ||
(sb.SubType & ~MACH_CPU_SUBTYPE_LIB64) >= 0x100)
return S_FALSE;
UInt64 endPos = (UInt64)sb.Offset + sb.Size;
if (endPosMax < endPos)
endPosMax = endPos;
}
_numItems = num;
_phySize = endPosMax;
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;
_phySize = 0;
return S_OK;
}
STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
{
*numItems = _numItems;
return S_OK;
}
namespace NBe {
static const Byte k_Signature[] = {
7, 0xCA, 0xFE, 0xBA, 0xBE, 0, 0, 0,
4, 0xB9, 0xFA, 0xF1, 0x0E };
REGISTER_ARC_I(
"Mub", "mub", 0, 0xE2,
k_Signature,
0,
NArcInfoFlags::kMultiSignature,
NULL)
}
}}
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