1 files changed, 507 insertions, 0 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Archive/MbrHandler.cpp b/src/libs/7zip/unix/CPP/7zip/Archive/MbrHandler.cpp
new file mode 100644
index 000000000..b6d791829
--- /dev/null
+++ b/src/libs/7zip/unix/CPP/7zip/Archive/MbrHandler.cpp
@@ -0,0 +1,507 @@
+// MbrHandler.cpp
+
+#include "StdAfx.h"
+
+// #define SHOW_DEBUG_INFO
+
+#ifdef SHOW_DEBUG_INFO
+#include <stdio.h>
+#endif
+
+#include "../../../C/CpuArch.h"
+
+#include "Common/Buffer.h"
+#include "Common/ComTry.h"
+#include "Common/IntToString.h"
+#include "Common/MyString.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"
+
+#ifdef SHOW_DEBUG_INFO
+#define PRF(x) x
+#else
+#define PRF(x)
+#endif
+
+using namespace NWindows;
+
+namespace NArchive {
+namespace NMbr {
+
+struct CChs
+{
+  Byte Head;
+  Byte SectCyl;
+  Byte Cyl8;
+  
+  UInt32 GetSector() const { return SectCyl & 0x3F; }
+  UInt32 GetCyl() const { return ((UInt32)SectCyl >> 6 << 8) | Cyl8; }
+  void ToString(NCOM::CPropVariant &prop) const;
+
+  void Parse(const Byte *p)
+  {
+    Head = p[0];
+    SectCyl = p[1];
+    Cyl8 = p[2];
+  }
+  bool Check() const { return GetSector() > 0; }
+};
+
+#define RINOZ(x) { int __tt = (x); if (__tt != 0) return __tt; }
+
+static int CompareChs(const CChs &c1, const CChs &c2)
+{
+  RINOZ(MyCompare(c1.GetCyl(), c2.GetCyl()));
+  RINOZ(MyCompare(c1.Head, c2.Head));
+  return MyCompare(c1.GetSector(), c2.GetSector());
+}
+
+static void AddUIntToString(UInt32 val, AString &res)
+{
+  char s[16];
+  ConvertUInt32ToString(val, s);
+  res += s;
+}
+
+void CChs::ToString(NCOM::CPropVariant &prop) const
+{
+  AString s;
+  AddUIntToString(GetCyl(), s);
+  s += '-';
+  AddUIntToString(Head, s);
+  s += '-';
+  AddUIntToString(GetSector(), s);
+  prop = s;
+}
+
+struct CPartition
+{
+  Byte Status;
+  CChs BeginChs;
+  Byte Type;
+  CChs EndChs;
+  UInt32 Lba;
+  UInt32 NumBlocks;
+
+  CPartition() { memset (this, 0, sizeof(*this)); }
+  
+  bool IsEmpty() const { return Type == 0; }
+  bool IsExtended() const { return Type == 5 || Type == 0xF; }
+  UInt32 GetLimit() const { return Lba + NumBlocks; }
+  // bool IsActive() const { return Status == 0x80; }
+  UInt64 GetPos() const { return (UInt64)Lba * 512; }
+  UInt64 GetSize() const { return (UInt64)NumBlocks * 512; }
+
+  bool CheckLbaLimits() const { return (UInt32)0xFFFFFFFF - Lba >= NumBlocks; }
+  bool Parse(const Byte *p)
+  {
+    Status = p[0];
+    BeginChs.Parse(p + 1);
+    Type = p[4];
+    EndChs.Parse(p + 5);
+    Lba = GetUi32(p + 8);
+    NumBlocks = GetUi32(p + 12);
+    if (Type == 0)
+      return true;
+    if (Status != 0 && Status != 0x80)
+      return false;
+    return
+       BeginChs.Check() &&
+       EndChs.Check() &&
+       CompareChs(BeginChs, EndChs) <= 0 &&
+       NumBlocks > 0 &&
+       CheckLbaLimits();
+  }
+
+  #ifdef SHOW_DEBUG_INFO
+  void Print() const
+  {
+    NCOM::CPropVariant prop, prop2;
+    BeginChs.ToString(prop);
+    EndChs.ToString(prop2);
+    printf("   %2x %2x %8X %8X %12S %12S", (int)Status, (int)Type, Lba, NumBlocks, prop.bstrVal, prop2.bstrVal);
+  }
+  #endif
+};
+
+struct CPartType
+{
+  UInt32 Id;
+  const char *Ext;
+  const char *Name;
+};
+
+static const char *kFat = "fat";
+
+static const CPartType kPartTypes[] =
+{
+  { 0x01, kFat, "FAT12" },
+  { 0x04, kFat, "FAT16 DOS 3.0+" },
+  { 0x05, 0, "Extended" },
+  { 0x06, kFat, "FAT16 DOS 3.31+" },
+  { 0x07, "ntfs", "NTFS" },
+  { 0x0B, kFat, "FAT32" },
+  { 0x0C, kFat, "FAT32-LBA" },
+  { 0x0E, kFat, "FAT16-LBA" },
+  { 0x0F, 0, "Extended-LBA" },
+  { 0x11, kFat, "FAT12-Hidden" },
+  { 0x14, kFat, "FAT16-Hidden < 32 MB" },
+  { 0x16, kFat, "FAT16-Hidden >= 32 MB" },
+  { 0x1B, kFat, "FAT32-Hidden" },
+  { 0x1C, kFat, "FAT32-LBA-Hidden" },
+  { 0x1E, kFat, "FAT16-LBA-WIN95-Hidden" },
+  { 0x82, 0, "Solaris x86 / Linux swap" },
+  { 0x83, 0, "Linux" },
+  { 0xBE, 0, "Solaris 8 boot" },
+  { 0xBF, 0, "New Solaris x86" },
+  { 0xC2, 0, "Linux-Hidden" },
+  { 0xC3, 0, "Linux swap-Hidden" },
+  { 0xEE, 0, "EFI-MBR" },
+  { 0xEE, 0, "EFI" }
+};
+
+static int FindPartType(UInt32 type)
+{
+  for (int i = 0; i < sizeof(kPartTypes) / sizeof(kPartTypes[0]); i++)
+    if (kPartTypes[i].Id == type)
+      return i;
+  return -1;
+}
+
+struct CItem
+{
+  bool IsReal;
+  bool IsPrim;
+  UInt64 Size;
+  CPartition Part;
+};
+
+class CHandler:
+  public IInArchive,
+  public IInArchiveGetStream,
+  public CMyUnknownImp
+{
+  CMyComPtr<IInStream> _stream;
+  CObjectVector<CItem> _items;
+  UInt64 _totalSize;
+  CByteBuffer _buffer;
+
+  HRESULT ReadTables(IInStream *stream, UInt32 baseLba, UInt32 lba, int level);
+public:
+  MY_UNKNOWN_IMP2(IInArchive, IInArchiveGetStream)
+  INTERFACE_IInArchive(;)
+  STDMETHOD(GetStream)(UInt32 index, ISequentialInStream **stream);
+};
+
+HRESULT CHandler::ReadTables(IInStream *stream, UInt32 baseLba, UInt32 lba, int level)
+{
+  if (level >= 128 || _items.Size() >= 128)
+    return S_FALSE;
+
+  const int kNumHeaderParts = 4;
+  CPartition parts[kNumHeaderParts];
+
+  {
+    const UInt32 kSectorSize = 512;
+    _buffer.SetCapacity(kSectorSize);
+    Byte *buf = _buffer;
+    UInt64 newPos = (UInt64)lba << 9;
+    if (newPos + 512 > _totalSize)
+      return S_FALSE;
+    RINOK(stream->Seek(newPos, STREAM_SEEK_SET, NULL));
+    RINOK(ReadStream_FALSE(stream, buf, kSectorSize));
+    
+    if (buf[0x1FE] != 0x55 || buf[0x1FF] != 0xAA)
+      return S_FALSE;
+    
+    for (int i = 0; i < kNumHeaderParts; i++)
+      if (!parts[i].Parse(buf + 0x1BE + 16 * i))
+        return S_FALSE;
+  }
+
+  PRF(printf("\n# %8X", lba));
+
+  UInt32 limLba = lba + 1;
+  if (limLba == 0)
+    return S_FALSE;
+
+  for (int i = 0; i < kNumHeaderParts; i++)
+  {
+    CPartition &part = parts[i];
+    
+    if (part.IsEmpty())
+      continue;
+    PRF(printf("\n   %2d ", (int)level));
+    #ifdef SHOW_DEBUG_INFO
+    part.Print();
+    #endif
+    
+    int numItems = _items.Size();
+    UInt32 newLba = lba + part.Lba;
+    
+    if (part.IsExtended())
+    {
+      // if (part.Type == 5) // Check it!
+      newLba = baseLba + part.Lba;
+      if (newLba < limLba)
+        return S_FALSE;
+      HRESULT res = ReadTables(stream, level < 1 ? newLba : baseLba, newLba, level + 1);
+      if (res != S_FALSE && res != S_OK)
+        return res;
+    }
+    if (newLba < limLba)
+      return S_FALSE;
+    part.Lba = newLba;
+    if (!part.CheckLbaLimits())
+      return S_FALSE;
+
+    CItem n;
+    n.Part = part;
+    bool addItem = false;
+    if (numItems == _items.Size())
+    {
+      n.IsPrim = (level == 0);
+      n.IsReal = true;
+      addItem = true;
+    }
+    else
+    {
+      const CItem &back = _items.Back();
+      UInt32 backLimit = back.Part.GetLimit();
+      UInt32 partLimit = part.GetLimit();
+      if (backLimit < partLimit)
+      {
+        n.IsReal = false;
+        n.Part.Lba = backLimit;
+        n.Part.NumBlocks = partLimit - backLimit;
+        addItem = true;
+      }
+    }
+    if (addItem)
+    {
+      if (n.Part.GetLimit() < limLba)
+        return S_FALSE;
+      limLba = n.Part.GetLimit();
+      n.Size = n.Part.GetSize();
+      _items.Add(n);
+    }
+  }
+  return S_OK;
+}
+
+STDMETHODIMP CHandler::Open(IInStream *stream,
+    const UInt64 * /* maxCheckStartPosition */,
+    IArchiveOpenCallback * /* openArchiveCallback */)
+{
+  COM_TRY_BEGIN
+  Close();
+  RINOK(stream->Seek(0, STREAM_SEEK_END, &_totalSize));
+  RINOK(ReadTables(stream, 0, 0, 0));
+  if (_items.IsEmpty())
+    return S_FALSE;
+  UInt32 lbaLimit = _items.Back().Part.GetLimit();
+  UInt64 lim = (UInt64)lbaLimit << 9;
+  if (lim < _totalSize)
+  {
+    CItem n;
+    n.Part.Lba = lbaLimit;
+    n.Size = _totalSize - lim;
+    n.IsReal = false;
+    _items.Add(n);
+  }
+  _stream = stream;
+  return S_OK;
+  COM_TRY_END
+}
+
+STDMETHODIMP CHandler::Close()
+{
+  _items.Clear();
+  _stream.Release();
+  return S_OK;
+}
+
+enum
+{
+  kpidPrimary = kpidUserDefined,
+  kpidBegChs,
+  kpidEndChs
+};
+
+STATPROPSTG kProps[] =
+{
+  { NULL, kpidPath, VT_BSTR},
+  { NULL, kpidSize, VT_UI8},
+  { NULL, kpidFileSystem, VT_BSTR},
+  { NULL, kpidOffset, VT_UI8},
+  { L"Primary", kpidPrimary, VT_BOOL},
+  { L"Begin CHS", kpidBegChs, VT_BSTR},
+  { L"End CHS", kpidEndChs, VT_BSTR}
+};
+
+IMP_IInArchive_Props_WITH_NAME
+IMP_IInArchive_ArcProps_NO_Table
+
+STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
+{
+  NCOM::CPropVariant prop;
+  switch(propID)
+  {
+    case kpidMainSubfile:
+    {
+      int mainIndex = -1;
+      for (int i = 0; i < _items.Size(); i++)
+        if (_items[i].IsReal)
+        {
+          if (mainIndex >= 0)
+          {
+            mainIndex = -1;
+            break;
+          }
+          mainIndex = i;
+        }
+      if (mainIndex >= 0)
+        prop = (UInt32)mainIndex;
+      break;
+    }
+  }
+  prop.Detach(value);
+  return S_OK;
+}
+
+STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
+{
+  *numItems = _items.Size();
+  return S_OK;
+}
+
+STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
+{
+  COM_TRY_BEGIN
+  NCOM::CPropVariant prop;
+
+  const CItem &item = _items[index];
+  const CPartition &part = item.Part;
+  switch(propID)
+  {
+    case kpidPath:
+    {
+      AString s;
+      AddUIntToString(index, s);
+      if (item.IsReal)
+      {
+        int typeIndex = FindPartType(part.Type);
+        s += '.';
+        const char *ext = "img";
+        if (typeIndex >= 0 && kPartTypes[typeIndex].Ext != 0)
+          ext = kPartTypes[typeIndex].Ext;
+        s += ext;
+      }
+      prop = s;
+      break;
+    }
+    case kpidFileSystem:
+      if (item.IsReal)
+      {
+        char s[32];
+        ConvertUInt32ToString(part.Type, s);
+        const char *res = s;
+        int typeIndex = FindPartType(part.Type);
+        if (typeIndex >= 0 && kPartTypes[typeIndex].Name)
+          res = kPartTypes[typeIndex].Name;
+        prop = res;
+      }
+      break;
+    case kpidSize: prop = item.Size; break;;
+    case kpidPackSize: prop = item.Size; break;
+    case kpidOffset: prop = part.GetPos(); break;
+    case kpidPrimary: if (item.IsReal) prop = item.IsPrim; break;
+    case kpidBegChs: if (item.IsReal) part.BeginChs.ToString(prop); break;
+    case kpidEndChs: if (item.IsReal) part.EndChs.ToString(prop); break;
+  }
+  prop.Detach(value);
+  return S_OK;
+  COM_TRY_END
+}
+
+STDMETHODIMP CHandler::Extract(const UInt32 *indices, UInt32 numItems,
+    Int32 testMode, IArchiveExtractCallback *extractCallback)
+{
+  COM_TRY_BEGIN
+  bool allFilesMode = (numItems == (UInt32)-1);
+  if (allFilesMode)
+    numItems = _items.Size();
+  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);
+
+  totalSize = 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 = totalSize;
+    lps->OutSize = totalSize;
+    RINOK(lps->SetCur());
+    CMyComPtr<ISequentialOutStream> outStream;
+    Int32 askMode = testMode ?
+        NExtract::NAskMode::kTest :
+        NExtract::NAskMode::kExtract;
+    Int32 index = allFilesMode ? i : indices[i];
+    const CItem &item = _items[index];
+    const CPartition &part = item.Part;
+    RINOK(extractCallback->GetStream(index, &outStream, askMode));
+    totalSize += item.Size;
+    if (!testMode && !outStream)
+      continue;
+    RINOK(extractCallback->PrepareOperation(askMode));
+
+    RINOK(_stream->Seek(part.GetPos(), STREAM_SEEK_SET, NULL));
+    streamSpec->Init(item.Size);
+    RINOK(copyCoder->Code(inStream, outStream, NULL, NULL, progress));
+    outStream.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, item.Part.GetPos(), item.Size, stream);
+  COM_TRY_END
+}
+
+static IInArchive *CreateArc() { return new CHandler; }
+
+static CArcInfo g_ArcInfo =
+  { L"MBR", L"mbr", 0, 0xDB, { 1, 1, 0 }, 3, false, CreateArc, 0 };
+
+REGISTER_ARC(Mbr)
+
+}}