rarhandler.cpp

来自「由7-zip提供的压缩、解压缩程序」· C++ 代码 · 共 943 行 · 第 1/2 页

// RarHandler.cpp

#include "StdAfx.h"

#include "RarHandler.h"

#include "Common/StringConvert.h"
#include "Common/ComTry.h"
#include "Common/IntToString.h"

#include "Windows/PropVariant.h"
#include "Windows/Time.h"

#include "../../IPassword.h"

#include "../../Common//ProgressUtils.h"
#include "../../Compress/Copy/CopyCoder.h"

#include "../../Crypto/Rar20/Rar20Cipher.h"
#include "../../Crypto/RarAES/RarAES.h"

#include "../Common/OutStreamWithCRC.h"
#include "../Common/CoderLoader.h"
#include "../Common/CodecsPath.h"
#include "../Common/FilterCoder.h"
#include "../Common/ItemNameUtils.h"

#include "../7z/7zMethods.h"

using namespace NWindows;
using namespace NTime;

// {23170F69-40C1-278B-0403-010000000000}
DEFINE_GUID(CLSID_CCompressRar15Decoder, 
0x23170F69, 0x40C1, 0x278B, 0x04, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00);

// {23170F69-40C1-278B-0403-020000000000}
DEFINE_GUID(CLSID_CCompressRar20Decoder, 
0x23170F69, 0x40C1, 0x278B, 0x04, 0x03, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00);

// {23170F69-40C1-278B-0403-030000000000}
DEFINE_GUID(CLSID_CCompressRar29Decoder, 
0x23170F69, 0x40C1, 0x278B, 0x04, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00);


namespace NArchive {
namespace NRar {

static const wchar_t *kHostOS[] =
{
  L"MS DOS",
  L"OS/2",
  L"Win32",
  L"Unix",
  L"Mac OS",
  L"BeOS"
};

static const int kNumHostOSes = sizeof(kHostOS) / sizeof(kHostOS[0]);

static const wchar_t *kUnknownOS = L"Unknown";

enum // PropID
{
  kpidUnPackVersion = kpidUserDefined
};

STATPROPSTG kProperties[] = 
{
  { NULL, kpidPath, VT_BSTR},
  { NULL, kpidIsFolder, VT_BOOL},
  { NULL, kpidSize, VT_UI8},
  { NULL, kpidPackedSize, VT_UI8},
  { NULL, kpidLastWriteTime, VT_FILETIME},
  { NULL, kpidCreationTime, VT_FILETIME},
  { NULL, kpidLastAccessTime, VT_FILETIME},
  { NULL, kpidAttributes, VT_UI4},


  { NULL, kpidEncrypted, VT_BOOL},
  { NULL, kpidSolid, VT_BOOL},
  { NULL, kpidCommented, VT_BOOL},
  { NULL, kpidSplitBefore, VT_BOOL},
  { NULL, kpidSplitAfter, VT_BOOL},
  { NULL, kpidCRC, VT_UI4},
  { NULL, kpidHostOS, VT_BSTR},
  { NULL, kpidMethod, VT_BSTR}
  // { NULL, kpidDictionarySize, VT_UI4},
  // { L"UnPack Version", kpidUnPackVersion, VT_UI1}
};

STATPROPSTG kArchiveProperties[] = 
{
  { NULL, kpidSolid, VT_BOOL},
  { NULL, kpidCommented, VT_BOOL},
};

UInt64 CHandler::GetPackSize(int refIndex) const
{
  const CRefItem &refItem = _refItems[refIndex];
  UInt64 totalPackSize = 0;
  for (int i = 0; i < refItem.NumItems; i++)
    totalPackSize += _items[refItem.ItemIndex + i].PackSize;
  return totalPackSize;
}

STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
{
  COM_TRY_BEGIN
  NWindows::NCOM::CPropVariant propVariant;
  switch(propID)
  {
    case kpidSolid:
      propVariant = _archiveInfo.IsSolid();
      break;
    case kpidCommented:
      propVariant = _archiveInfo.IsCommented();
      break;
  }
  propVariant.Detach(value);
  return S_OK;
  COM_TRY_END
}

STDMETHODIMP CHandler::GetNumberOfProperties(UInt32 *numProperties)
{
  *numProperties = sizeof(kProperties) / sizeof(kProperties[0]);
  return S_OK;
}

STDMETHODIMP CHandler::GetPropertyInfo(UInt32 index,     
      BSTR *name, PROPID *propID, VARTYPE *varType)
{
  if(index >= sizeof(kProperties) / sizeof(kProperties[0]))
    return E_INVALIDARG;
  const STATPROPSTG &srcItem = kProperties[index];
  *propID = srcItem.propid;
  *varType = srcItem.vt;
  *name = 0;
  return S_OK;
}

STDMETHODIMP CHandler::GetNumberOfArchiveProperties(UInt32 *numProperties)
{
  *numProperties = sizeof(kArchiveProperties) / sizeof(kArchiveProperties[0]);
  return S_OK;
}

STDMETHODIMP CHandler::GetArchivePropertyInfo(UInt32 index,     
      BSTR *name, PROPID *propID, VARTYPE *varType)
{
  if(index >= sizeof(kArchiveProperties) / sizeof(kArchiveProperties[0]))
    return E_INVALIDARG;
  const STATPROPSTG &srcItem = kArchiveProperties[index];
  *propID = srcItem.propid;
  *varType = srcItem.vt;
  *name = 0;
  return S_OK;
}

STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
{
  *numItems = _refItems.Size();
  return S_OK;
}

static bool RarTimeToFileTime(const CRarTime &rarTime, FILETIME &result)
{
  if (!DosTimeToFileTime(rarTime.DosTime, result))
    return false;
  UInt64 value =  (((UInt64)result.dwHighDateTime) << 32) + result.dwLowDateTime;
  value += (UInt64)rarTime.LowSecond * 10000000;
  value += ((UInt64)rarTime.SubTime[2] << 16) + 
    ((UInt64)rarTime.SubTime[1] << 8) +
    ((UInt64)rarTime.SubTime[0]);
  result.dwLowDateTime = (DWORD)value;
  result.dwHighDateTime = DWORD(value >> 32);
  return true;
}

STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID,  PROPVARIANT *value)
{
  COM_TRY_BEGIN
  NWindows::NCOM::CPropVariant propVariant;
  const CRefItem &refItem = _refItems[index];
  const CItemEx &item = _items[refItem.ItemIndex];
  switch(propID)
  {
    case kpidPath:
    {
      UString u;
      if (item.HasUnicodeName() && !item.UnicodeName.IsEmpty())
        u = item.UnicodeName;
      else
        u = MultiByteToUnicodeString(item.Name, CP_OEMCP);
      propVariant = (const wchar_t *)NItemName::WinNameToOSName(u);
      break;
    }
    case kpidIsFolder:
      propVariant = item.IsDirectory();
      break;
    case kpidSize:
      propVariant = item.UnPackSize;
      break;
    case kpidPackedSize:
    {
      propVariant = GetPackSize(index);
      break;
    }
    case kpidLastWriteTime:
    {
      FILETIME localFileTime, utcFileTime;
      if (RarTimeToFileTime(item.LastWriteTime, localFileTime))
      {
        if (!LocalFileTimeToFileTime(&localFileTime, &utcFileTime))
          utcFileTime.dwHighDateTime = utcFileTime.dwLowDateTime = 0;
      }
      else
        utcFileTime.dwHighDateTime = utcFileTime.dwLowDateTime = 0;
      propVariant = utcFileTime;
      break;
    }
    case kpidCreationTime:
    {
      if (item.IsCreationTimeDefined)
      {
        FILETIME localFileTime, utcFileTime;
        if (RarTimeToFileTime(item.CreationTime, localFileTime))
        {
          if (!LocalFileTimeToFileTime(&localFileTime, &utcFileTime))
            utcFileTime.dwHighDateTime = utcFileTime.dwLowDateTime = 0;
        }
        else
          utcFileTime.dwHighDateTime = utcFileTime.dwLowDateTime = 0;
        propVariant = utcFileTime;
      }
      break;
    }
    case kpidLastAccessTime:
    {
      if (item.IsLastAccessTimeDefined)
      {
        FILETIME localFileTime, utcFileTime;
        if (RarTimeToFileTime(item.LastAccessTime, localFileTime))
        {
          if (!LocalFileTimeToFileTime(&localFileTime, &utcFileTime))
            utcFileTime.dwHighDateTime = utcFileTime.dwLowDateTime = 0;
        }
        else
          utcFileTime.dwHighDateTime = utcFileTime.dwLowDateTime = 0;
        propVariant = utcFileTime;
      }
      break;
    }
    case kpidAttributes:
      propVariant = item.GetWinAttributes();
      break;
    case kpidEncrypted:
      propVariant = item.IsEncrypted();
      break;
    case kpidSolid:
      propVariant = IsSolid(index);
      break;
    case kpidCommented:
      propVariant = item.IsCommented();
      break;
    case kpidSplitBefore:
      propVariant = item.IsSplitBefore();
      break;
    case kpidSplitAfter:
      propVariant = _items[refItem.ItemIndex + refItem.NumItems - 1].IsSplitAfter();
      break;
    /*
    case kpidDictionarySize:
      if (!item.IsDirectory())
        propVariant = UInt32(0x10000 << item.GetDictSize());
      break;
    */
    case kpidCRC:
    {
      const CItemEx &lastItem = 
          _items[refItem.ItemIndex + refItem.NumItems - 1];
      if (lastItem.IsSplitAfter())
        propVariant = item.FileCRC;
      else
        propVariant = lastItem.FileCRC;
      break;
    }
    case kpidUnPackVersion:
      propVariant = item.UnPackVersion;
      break;
    case kpidMethod:
    {
      UString method;
      if (item.Method >= Byte('0') && item.Method <= Byte('5'))
      {
        method = L"m";
        wchar_t temp[32];
        ConvertUInt64ToString(item.Method - Byte('0'), temp);
        method += temp;
        if (!item.IsDirectory())
        {
          method += L":";
          ConvertUInt64ToString(16 + item.GetDictSize(), temp);
          method += temp;
        }
      }
      else
      {
        wchar_t temp[32];
        ConvertUInt64ToString(item.Method, temp);
        method += temp;
      }
      propVariant = method;
      break;
    }
    case kpidHostOS:
      propVariant = (item.HostOS < kNumHostOSes) ?
        (kHostOS[item.HostOS]) : kUnknownOS;
      break;
  }
  propVariant.Detach(value);
  return S_OK;
  COM_TRY_END
}

class CVolumeName
{
  bool _first;
  bool _newStyle;
  UString _unchangedPart;
  UString _changedPart;    
  UString _afterPart;    
public:
  CVolumeName(): _newStyle(true) {};

  bool InitName(const UString &name, bool newStyle)
  {
    _first = true;
    _newStyle = newStyle;
    int dotPos = name.ReverseFind('.');
    UString basePart = name;
    if (dotPos >= 0)
    {
      UString ext = name.Mid(dotPos + 1);
      if (ext.CompareNoCase(L"RAR")==0 || 
        ext.CompareNoCase(L"EXE") == 0)
      {
        _afterPart = L".rar";
        basePart = name.Left(dotPos);
      }
    }

    if (!_newStyle)
    {
      _afterPart.Empty();
      _unchangedPart = basePart + UString(L".");
      _changedPart = L"r00";
      return true;;
    }

    int numLetters = 1;
    bool splitStyle = false;
    if (basePart.Right(numLetters) == L"1")
    {
      while (numLetters < basePart.Length())
      {
        if (basePart[basePart.Length() - numLetters - 1] != '0')
          break;
        numLetters++;
      }
    }
    else 
      return false;
    _unchangedPart = basePart.Left(basePart.Length() - numLetters);
    _changedPart = basePart.Right(numLetters);
    return true;
  }

  UString GetNextName()
  {
    UString newName; 
    if (_newStyle || !_first)
    {
      int i;
      int numLetters = _changedPart.Length();
      for (i = numLetters - 1; i >= 0; i--)
      {
        wchar_t c = _changedPart[i];
        if (c == L'9')
        {
          c = L'0';
          newName = c + newName;
          if (i == 0)
            newName = UString(L'1') + newName;
          continue;
        }
        c++;
        newName = UString(c) + newName;
        i--;
        for (; i >= 0; i--)
          newName = _changedPart[i] + newName;
        break;
      }
      _changedPart = newName;
    }
    _first = false;
    return _unchangedPart + _changedPart + _afterPart;
  }
};

STDMETHODIMP CHandler::Open(IInStream *stream, 
    const UInt64 *maxCheckStartPosition,
    IArchiveOpenCallback *openArchiveCallback)
{
  COM_TRY_BEGIN
  Close();
  try
  {
    CMyComPtr<IArchiveOpenVolumeCallback> openVolumeCallback;
    CMyComPtr<ICryptoGetTextPassword> getTextPassword;
    CMyComPtr<IArchiveOpenCallback> openArchiveCallbackWrap = openArchiveCallback;
    
    CVolumeName seqName;

    if (openArchiveCallback != NULL)
    {
      openArchiveCallbackWrap.QueryInterface(IID_IArchiveOpenVolumeCallback, &openVolumeCallback);
      RINOK(openArchiveCallback->SetTotal(NULL, NULL));
      UInt64 numFiles = _items.Size();
      RINOK(openArchiveCallback->SetCompleted(&numFiles, NULL));
      openArchiveCallbackWrap.QueryInterface(IID_ICryptoGetTextPassword, &getTextPassword);
    }

    while(true)
    {
      CMyComPtr<IInStream> inStream;
      if (!_archives.IsEmpty())
      {
        if (!openVolumeCallback)
          break;
        
        if(_archives.Size() == 1)
        {
          if (!_archiveInfo.IsVolume())
            break;
          UString baseName;
          {
            NCOM::CPropVariant propVariant;
            RINOK(openVolumeCallback->GetProperty(kpidName, &propVariant));
            if (propVariant.vt != VT_BSTR)
              break;
            baseName = propVariant.bstrVal;
          }
          seqName.InitName(baseName, _archiveInfo.HaveNewVolumeName());
        }

        UString fullName = seqName.GetNextName();
        HRESULT result = openVolumeCallback->GetStream(fullName, &inStream);
        if (result == S_FALSE)
          break;
        if (result != S_OK)
          return result;
        if (!stream)
          break;
      }
      else
        inStream = stream;
      
      NArchive::NRar::CInArchive archive;
      if(!archive.Open(inStream, maxCheckStartPosition))
        return S_FALSE;