// UpdateCallback.cpp

#include "StdAfx.h"

#ifndef _7ZIP_ST
#include "Windows/Synchronization.h"
#endif

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

#include "Windows/FileDir.h"
#include "Windows/FileName.h"
#include "Windows/PropVariant.h"
#include "Windows/Synchronization.h"

#include "7zip/Common/StreamObjects.h"

#include "7zip/UI/Common/UpdateCallback.h"

#if defined(_WIN32) && !defined(UNDER_CE)
#define _USE_SECURITY_CODE
#include "Windows/SecurityUtils.h"
#endif

using namespace NWindows;
using namespace NFile;

#ifndef _7ZIP_ST
static NSynchronization::CCriticalSection g_CriticalSection;
#define MT_LOCK NSynchronization::CCriticalSectionLock lock(g_CriticalSection);
#else
#define MT_LOCK
#endif


#ifdef _USE_SECURITY_CODE
bool InitLocalPrivileges();
#endif

CArchiveUpdateCallback::CArchiveUpdateCallback():
    _hardIndex_From((UInt32)(Int32)-1),
    
    Callback(NULL),
  
    DirItems(NULL),
    ParentDirItem(NULL),
    
    Arc(NULL),
    ArcItems(NULL),
    UpdatePairs(NULL),
    NewNames(NULL),
    
    ShareForWrite(false),
    StdInMode(false),
    
    KeepOriginalItemNames(false),
    StoreNtSecurity(false),
    StoreHardLinks(false),
    StoreSymLinks(false),
    
    ProcessedItemsStatuses(NULL)
{
  #ifdef _USE_SECURITY_CODE
  _saclEnabled = InitLocalPrivileges();
  #endif
}


STDMETHODIMP CArchiveUpdateCallback::SetTotal(UInt64 size)
{
  COM_TRY_BEGIN
  return Callback->SetTotal(size);
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::SetCompleted(const UInt64 *completeValue)
{
  COM_TRY_BEGIN
  return Callback->SetCompleted(completeValue);
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::SetRatioInfo(const UInt64 *inSize, const UInt64 *outSize)
{
  COM_TRY_BEGIN
  return Callback->SetRatioInfo(inSize, outSize);
  COM_TRY_END
}


/*
static const CStatProp kProps[] =
{
  { NULL, kpidPath, VT_BSTR},
  { NULL, kpidIsDir, VT_BOOL},
  { NULL, kpidSize, VT_UI8},
  { NULL, kpidCTime, VT_FILETIME},
  { NULL, kpidATime, VT_FILETIME},
  { NULL, kpidMTime, VT_FILETIME},
  { NULL, kpidAttrib, VT_UI4},
  { NULL, kpidIsAnti, VT_BOOL}
};

STDMETHODIMP CArchiveUpdateCallback::EnumProperties(IEnumSTATPROPSTG **)
{
  return CStatPropEnumerator::CreateEnumerator(kProps, ARRAY_SIZE(kProps), enumerator);
}
*/

STDMETHODIMP CArchiveUpdateCallback::GetUpdateItemInfo(UInt32 index,
      Int32 *newData, Int32 *newProps, UInt32 *indexInArchive)
{
  COM_TRY_BEGIN
  RINOK(Callback->CheckBreak());
  const CUpdatePair2 &up = (*UpdatePairs)[index];
  if (newData) *newData = BoolToInt(up.NewData);
  if (newProps) *newProps = BoolToInt(up.NewProps);
  if (indexInArchive)
  {
    *indexInArchive = (UInt32)(Int32)-1;
    if (up.ExistInArchive())
      *indexInArchive = (ArcItems == 0) ? up.ArcIndex : (*ArcItems)[up.ArcIndex].IndexInServer;
  }
  return S_OK;
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::GetRootProp(PROPID propID, PROPVARIANT *value)
{
  NCOM::CPropVariant prop;
  switch (propID)
  {
    case kpidIsDir:  prop = true; break;
    case kpidAttrib: if (ParentDirItem) prop = ParentDirItem->Attrib; break;
    case kpidCTime:  if (ParentDirItem) prop = ParentDirItem->CTime; break;
    case kpidATime:  if (ParentDirItem) prop = ParentDirItem->ATime; break;
    case kpidMTime:  if (ParentDirItem) prop = ParentDirItem->MTime; break;
  }
  prop.Detach(value);
  return S_OK;
}

STDMETHODIMP CArchiveUpdateCallback::GetParent(UInt32 /* index */, UInt32 *parent, UInt32 *parentType)
{
  *parentType = NParentType::kDir;
  *parent = (UInt32)(Int32)-1;
  return S_OK;
}

STDMETHODIMP CArchiveUpdateCallback::GetNumRawProps(UInt32 *numProps)
{
  *numProps = 0;
  if (StoreNtSecurity)
    *numProps = 1;
  return S_OK;
}

STDMETHODIMP CArchiveUpdateCallback::GetRawPropInfo(UInt32 /* index */, BSTR *name, PROPID *propID)
{
  *name = NULL;
  *propID = kpidNtSecure;
  return S_OK;
}

STDMETHODIMP CArchiveUpdateCallback::GetRootRawProp(PROPID
    #ifdef _USE_SECURITY_CODE
    propID
    #endif
    , const void **data, UInt32 *dataSize, UInt32 *propType)
{
  *data = 0;
  *dataSize = 0;
  *propType = 0;
  if (!StoreNtSecurity)
    return S_OK;
  #ifdef _USE_SECURITY_CODE
  if (propID == kpidNtSecure)
  {
    if (StdInMode)
      return S_OK;

    if (ParentDirItem)
    {
      if (ParentDirItem->SecureIndex < 0)
        return S_OK;
      const CByteBuffer &buf = DirItems->SecureBlocks.Bufs[ParentDirItem->SecureIndex];
      *data = buf;
      *dataSize = (UInt32)buf.Size();
      *propType = NPropDataType::kRaw;
      return S_OK;
    }

    if (Arc && Arc->GetRootProps)
      return Arc->GetRootProps->GetRootRawProp(propID, data, dataSize, propType);
  }
  #endif
  return S_OK;
}

//    #ifdef _USE_SECURITY_CODE
//    #endif

STDMETHODIMP CArchiveUpdateCallback::GetRawProp(UInt32 index, PROPID propID, const void **data, UInt32 *dataSize, UInt32 *propType)
{
  *data = 0;
  *dataSize = 0;
  *propType = 0;

  if (propID == kpidNtSecure ||
      propID == kpidNtReparse)
  {
    if (StdInMode)
      return S_OK;

    const CUpdatePair2 &up = (*UpdatePairs)[index];
    if (up.UseArcProps && up.ExistInArchive() && Arc->GetRawProps)
      return Arc->GetRawProps->GetRawProp(
          ArcItems ? (*ArcItems)[up.ArcIndex].IndexInServer : up.ArcIndex,
          propID, data, dataSize, propType);
    {
      /*
      if (!up.NewData)
        return E_FAIL;
      */
      if (up.IsAnti)
        return S_OK;
      
      #ifndef UNDER_CE
      const CDirItem &di = DirItems->Items[up.DirIndex];
      #endif

      #ifdef _USE_SECURITY_CODE
      if (propID == kpidNtSecure)
      {
        if (!StoreNtSecurity)
          return S_OK;
        if (di.SecureIndex < 0)
          return S_OK;
        const CByteBuffer &buf = DirItems->SecureBlocks.Bufs[di.SecureIndex];
        *data = buf;
        *dataSize = (UInt32)buf.Size();
        *propType = NPropDataType::kRaw;
      }
      else
      #endif
      {
        // propID == kpidNtReparse
        if (!StoreSymLinks)
          return S_OK;
        #if 0 // #ifndef UNDER_CE
        const CByteBuffer *buf = &di.ReparseData2;
        if (buf->Size() == 0)
          buf = &di.ReparseData;
        if (buf->Size() != 0)
        {
          *data = *buf;
          *dataSize = (UInt32)buf->Size();
          *propType = NPropDataType::kRaw;
        }
        #endif
      }
 
      return S_OK;
    }
  }

  return S_OK;
}

#ifndef UNDER_CE

static UString GetRelativePath(const UString &to, const UString &from)
{
  UStringVector partsTo, partsFrom;
  SplitPathToParts(to, partsTo);
  SplitPathToParts(from, partsFrom);

  unsigned i;
  for (i = 0;; i++)
  {
    if (i + 1 >= partsFrom.Size() ||
        i + 1 >= partsTo.Size())
      break;
    if (CompareFileNames(partsFrom[i], partsTo[i]) != 0)
      break;
  }

  if (i == 0)
  {
    #ifdef _WIN32
    if (NName::IsDrivePath(to) ||
        NName::IsDrivePath(from))
      return to;
    #endif
  }

  UString s;
  unsigned k;
  
  for (k = i + 1; k < partsFrom.Size(); k++)
    s += L".." WSTRING_PATH_SEPARATOR;
  
  for (k = i; k < partsTo.Size(); k++)
  {
    if (k != i)
      s.Add_PathSepar();
    s += partsTo[k];
  }

  return s;
}

#endif

STDMETHODIMP CArchiveUpdateCallback::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
{
  COM_TRY_BEGIN
  const CUpdatePair2 &up = (*UpdatePairs)[index];
  NCOM::CPropVariant prop;

  if (up.NewData)
  {
    /*
    if (propID == kpidIsHardLink)
    {
      prop = _isHardLink;
      prop.Detach(value);
      return S_OK;
    }
    */
    if (propID == kpidSymLink)
    {
      if (index == _hardIndex_From)
      {
        prop.Detach(value);
        return S_OK;
      }
      if (up.DirIndex >= 0)
      {
        #if 0 // #ifndef UNDER_CE
        const CDirItem &di = DirItems->Items[up.DirIndex];
        // if (di.IsDir())
        {
          CReparseAttr attr;
          if (attr.Parse(di.ReparseData, di.ReparseData.Size()))
          {
            UString simpleName = attr.GetPath();
            if (attr.IsRelative())
              prop = simpleName;
            else
            {
              const FString phyPath = DirItems->GetPhyPath(up.DirIndex);
              FString fullPath;
              if (NDir::MyGetFullPathName(phyPath, fullPath))
              {
                prop = GetRelativePath(simpleName, fs2us(fullPath));
              }
            }
            prop.Detach(value);
            return S_OK;
          }
        }
        #endif
      }
    }
    else if (propID == kpidHardLink)
    {
      if (index == _hardIndex_From)
      {
        const CKeyKeyValPair &pair = _map[_hardIndex_To];
        const CUpdatePair2 &up2 = (*UpdatePairs)[pair.Value];
        prop = DirItems->GetLogPath(up2.DirIndex);
        prop.Detach(value);
        return S_OK;
      }
      if (up.DirIndex >= 0)
      {
        prop.Detach(value);
        return S_OK;
      }
    }
  }
  
  if (up.IsAnti
      && propID != kpidIsDir
      && propID != kpidPath
      && propID != kpidIsAltStream)
  {
    switch (propID)
    {
      case kpidSize:  prop = (UInt64)0; break;
      case kpidIsAnti:  prop = true; break;
    }
  }
  else if (propID == kpidPath && up.NewNameIndex >= 0)
    prop = (*NewNames)[up.NewNameIndex];
  else if (propID == kpidShortName && up.NewNameIndex >= 0 && up.IsMainRenameItem)
  {
    // we can generate new ShortName here;
  }
  else if ((up.UseArcProps || (KeepOriginalItemNames && (propID == kpidPath || propID == kpidIsAltStream)))
      && up.ExistInArchive() && Archive)
    return Archive->GetProperty(ArcItems ? (*ArcItems)[up.ArcIndex].IndexInServer : up.ArcIndex, propID, value);
  else if (up.ExistOnDisk())
  {
    const CDirItem &di = DirItems->Items[up.DirIndex];
    switch (propID)
    {
      case kpidPath:  prop = DirItems->GetLogPath(up.DirIndex); break;
      case kpidIsDir:  prop = di.IsDir(); break;
      case kpidSize:  prop = di.IsDir() ? (UInt64)0 : di.Size; break;
      case kpidAttrib:  prop = di.Attrib; break;
      case kpidCTime:  prop = di.CTime; break;
      case kpidATime:  prop = di.ATime; break;
      case kpidMTime:  prop = di.MTime; break;
      case kpidIsAltStream:  prop = di.IsAltStream; break;
      #if defined(_WIN32) && !defined(UNDER_CE)
      // case kpidShortName:  prop = di.ShortName; break;
      #endif
    }
  }
  prop.Detach(value);
  return S_OK;
  COM_TRY_END
}

#ifndef _7ZIP_ST
static NSynchronization::CCriticalSection CS;
#endif

STDMETHODIMP CArchiveUpdateCallback::GetStream2(UInt32 index, ISequentialInStream **inStream, UInt32 mode)
{
  COM_TRY_BEGIN
  *inStream = NULL;
  const CUpdatePair2 &up = (*UpdatePairs)[index];
  if (!up.NewData)
    return E_FAIL;
  
  RINOK(Callback->CheckBreak());
  // RINOK(Callback->Finalize());

  bool isDir = IsDir(up);

  if (up.IsAnti)
  {
    UString name;
    if (up.ArcIndex >= 0)
      name = (*ArcItems)[up.ArcIndex].Name;
    else if (up.DirIndex >= 0)
      name = DirItems->GetLogPath(up.DirIndex);
    RINOK(Callback->GetStream(name, isDir, true, mode));
    
    /* 9.33: fixed. Handlers expect real stream object for files, even for anti-file.
       so we return empty stream */

    if (!isDir)
    {
      CBufInStream *inStreamSpec = new CBufInStream();
      CMyComPtr<ISequentialInStream> inStreamLoc = inStreamSpec;
      inStreamSpec->Init(NULL, 0);
      *inStream = inStreamLoc.Detach();
    }
    return S_OK;
  }
  
  RINOK(Callback->GetStream(DirItems->GetLogPath(up.DirIndex), isDir, false, mode));
 
  if (isDir)
    return S_OK;

  if (StdInMode)
  {
    if (mode != NUpdateNotifyOp::kAdd &&
        mode != NUpdateNotifyOp::kUpdate)
      return S_OK;

    CStdInFileStream *inStreamSpec = new CStdInFileStream;
    CMyComPtr<ISequentialInStream> inStreamLoc(inStreamSpec);
    *inStream = inStreamLoc.Detach();
  }
  else
  {
    CInFileStream *inStreamSpec = new CInFileStream;
    CMyComPtr<ISequentialInStream> inStreamLoc(inStreamSpec);

    inStreamSpec->SupportHardLinks = StoreHardLinks;
    inStreamSpec->Callback = this;
    inStreamSpec->CallbackRef = index;

    const FString path = DirItems->GetPhyPath(up.DirIndex);
    _openFiles_Indexes.Add(index);
    _openFiles_Paths.Add(path);

    #if defined(_WIN32) && !defined(UNDER_CE)
    if (DirItems->Items[up.DirIndex].AreReparseData())
    {
      if (!inStreamSpec->File.OpenReparse(path))
      {
        return Callback->OpenFileError(path, ::GetLastError());
      }
    }
    else
    #endif
    if (!inStreamSpec->OpenShared(path, ShareForWrite))
    {
      return Callback->OpenFileError(path, ::GetLastError());
    }

#ifdef _WIN32 // FIXME
    if (StoreHardLinks)
    {
      CStreamFileProps props;
      if (inStreamSpec->GetProps2(&props) == S_OK)
      {
        if (props.NumLinks > 1)
        {
          CKeyKeyValPair pair;
          pair.Key1 = props.VolID;
          pair.Key2 = props.FileID_Low;
          pair.Value = index;
          unsigned numItems = _map.Size();
          unsigned pairIndex = _map.AddToUniqueSorted2(pair);
          if (numItems == _map.Size())
          {
            // const CKeyKeyValPair &pair2 = _map.Pairs[pairIndex];
            _hardIndex_From = index;
            _hardIndex_To = pairIndex;
            // we could return NULL as stream, but it's better to return real stream
            // return S_OK;
          }
        }
      }
    }
#endif

    if (ProcessedItemsStatuses)
    {
      #ifndef _7ZIP_ST
      NSynchronization::CCriticalSectionLock lock(CS);
      #endif
      ProcessedItemsStatuses[(unsigned)up.DirIndex] = 1;
    }
    *inStream = inStreamLoc.Detach();
  }
  
  return S_OK;
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::SetOperationResult(Int32 opRes)
{
  COM_TRY_BEGIN
  return Callback->SetOperationResult(opRes);
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::GetStream(UInt32 index, ISequentialInStream **inStream)
{
  COM_TRY_BEGIN
  return GetStream2(index, inStream,
      (*UpdatePairs)[index].ArcIndex < 0 ?
          NUpdateNotifyOp::kAdd :
          NUpdateNotifyOp::kUpdate);
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::ReportOperation(UInt32 indexType, UInt32 index, UInt32 op)
{
  COM_TRY_BEGIN

  bool isDir = false;

  if (indexType == NArchive::NEventIndexType::kOutArcIndex)
  {
    UString name;
    if (index != (UInt32)(Int32)-1)
    {
      const CUpdatePair2 &up = (*UpdatePairs)[index];
      if (up.ExistOnDisk())
      {
        name = DirItems->GetLogPath(up.DirIndex);
        isDir = DirItems->Items[up.DirIndex].IsDir();
      }
    }
    return Callback->ReportUpdateOpeartion(op, name.IsEmpty() ? NULL : name.Ptr(), isDir);
  }
  
  wchar_t temp[16];
  UString s2;
  const wchar_t *s = NULL;
  
  if (indexType == NArchive::NEventIndexType::kInArcIndex)
  {
    if (index != (UInt32)(Int32)-1)
    {
      if (ArcItems)
      {
        const CArcItem &ai = (*ArcItems)[index];
        s = ai.Name;
        isDir = ai.IsDir;
      }
      else if (Arc)
      {
        RINOK(Arc->GetItemPath(index, s2));
        s = s2;
        RINOK(Archive_IsItem_Dir(Arc->Archive, index, isDir));
      }
    }
  }
  else if (indexType == NArchive::NEventIndexType::kBlockIndex)
  {
    temp[0] = '#';
    ConvertUInt32ToString(index, temp + 1);
    s = temp;
  }

  if (!s)
    s = L"";

  return Callback->ReportUpdateOpeartion(op, s, isDir);

  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::ReportExtractResult(UInt32 indexType, UInt32 index, Int32 opRes)
{
  COM_TRY_BEGIN

  bool isEncrypted = false;
  wchar_t temp[16];
  UString s2;
  const wchar_t *s = NULL;
  
  if (indexType == NArchive::NEventIndexType::kOutArcIndex)
  {
    /*
    UString name;
    if (index != (UInt32)(Int32)-1)
    {
      const CUpdatePair2 &up = (*UpdatePairs)[index];
      if (up.ExistOnDisk())
      {
        s2 = DirItems->GetLogPath(up.DirIndex);
        s = s2;
      }
    }
    */
    return E_FAIL;
  }
 
  if (indexType == NArchive::NEventIndexType::kInArcIndex)
  {
    if (index != (UInt32)(Int32)-1)
    {
      if (ArcItems)
        s = (*ArcItems)[index].Name;
      else if (Arc)
      {
        RINOK(Arc->GetItemPath(index, s2));
        s = s2;
      }
      if (Archive)
      {
        RINOK(Archive_GetItemBoolProp(Archive, index, kpidEncrypted, isEncrypted));
      }
    }
  }
  else if (indexType == NArchive::NEventIndexType::kBlockIndex)
  {
    temp[0] = '#';
    ConvertUInt32ToString(index, temp + 1);
    s = temp;
  }

  return Callback->ReportExtractResult(opRes, BoolToInt(isEncrypted), s);

  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::GetVolumeSize(UInt32 index, UInt64 *size)
{
  if (VolumesSizes.Size() == 0)
    return S_FALSE;
  if (index >= (UInt32)VolumesSizes.Size())
    index = VolumesSizes.Size() - 1;
  *size = VolumesSizes[index];
  return S_OK;
}

STDMETHODIMP CArchiveUpdateCallback::GetVolumeStream(UInt32 index, ISequentialOutStream **volumeStream)
{
  COM_TRY_BEGIN
  FChar temp[16];
  ConvertUInt32ToString(index + 1, temp);
  FString res = temp;
  while (res.Len() < 2)
    res.InsertAtFront(FTEXT('0'));
  FString fileName = VolName;
  fileName += FTEXT('.');
  fileName += res;
  fileName += VolExt;
  COutFileStream *streamSpec = new COutFileStream;
  CMyComPtr<ISequentialOutStream> streamLoc(streamSpec);
  if (!streamSpec->Create(fileName, false))
    return ::GetLastError();
  *volumeStream = streamLoc.Detach();
  return S_OK;
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::CryptoGetTextPassword2(Int32 *passwordIsDefined, BSTR *password)
{
  COM_TRY_BEGIN
  return Callback->CryptoGetTextPassword2(passwordIsDefined, password);
  COM_TRY_END
}

STDMETHODIMP CArchiveUpdateCallback::CryptoGetTextPassword(BSTR *password)
{
  COM_TRY_BEGIN
  return Callback->CryptoGetTextPassword(password);
  COM_TRY_END
}

HRESULT CArchiveUpdateCallback::InFileStream_On_Error(UINT_PTR val, DWORD error)
{
#ifdef _WIN32 // FIXME
  if (error == ERROR_LOCK_VIOLATION)
  {
    MT_LOCK
    UInt32 index = (UInt32)val;
    FOR_VECTOR(i, _openFiles_Indexes)
    {
      if (_openFiles_Indexes[i] == index)
      {
        RINOK(Callback->ReadingFileError(_openFiles_Paths[i], error));
        break;
      }
    }
  }
#endif
  return HRESULT_FROM_WIN32(error);
}

void CArchiveUpdateCallback::InFileStream_On_Destroy(UINT_PTR val)
{
  MT_LOCK
  UInt32 index = (UInt32)val;
  FOR_VECTOR(i, _openFiles_Indexes)
  {
    if (_openFiles_Indexes[i] == index)
    {
      _openFiles_Indexes.Delete(i);
      _openFiles_Paths.Delete(i);
      return;
    }
  }
  throw 20141125;
}
