162 lines
3.7 KiB
C++
162 lines
3.7 KiB
C++
/*
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*
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* Copyright(C) 2013 Joe Bialek Twitter:@JosephBialek
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*
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* This program/include file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program/include file is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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//
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// This code uses libraries released under GPLv2(or later) written by cyb70289 <cyb70289@gmail.com>
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#include "stdafx.h"
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#include "NTFS.h"
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#include "NTFS_DataType.h"
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using namespace std;
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struct FileInfo_t
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{
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CNTFSVolume* volume;
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CFileRecord* fileRecord;
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CIndexEntry* indexEntry;
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CAttrBase* data;
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};
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extern "C" HANDLE __declspec(dllexport) StealthOpenFile(char* filePathCStr)
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{
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FileInfo_t* fileInfo = new FileInfo_t;
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string filePath = string(filePathCStr);
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_TCHAR volumeName = filePath.at(0);
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fileInfo->volume = new CNTFSVolume(volumeName);
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if (!fileInfo->volume->IsVolumeOK())
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{
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return NULL;
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}
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//Parse root directory
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fileInfo->fileRecord = new CFileRecord(fileInfo->volume);
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fileInfo->fileRecord->SetAttrMask(MASK_INDEX_ROOT | MASK_INDEX_ALLOCATION);
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if (!fileInfo->fileRecord->ParseFileRecord(MFT_IDX_ROOT))
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{
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return NULL;
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}
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if (!fileInfo->fileRecord->ParseAttrs())
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{
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return NULL;
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}
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//Find subdirectory
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fileInfo->indexEntry = new CIndexEntry;
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int dirs = filePath.find(_T('\\'), 0);
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int dire = filePath.find(_T('\\'), dirs+1);
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while (dire != string::npos)
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{
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string pathname = filePath.substr(dirs+1, dire-dirs-1);
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const _TCHAR* pathnameCStr = (const _TCHAR*)pathname.c_str();
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if (fileInfo->fileRecord->FindSubEntry(pathnameCStr, *(fileInfo->indexEntry)))
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{
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if (!fileInfo->fileRecord->ParseFileRecord(fileInfo->indexEntry->GetFileReference()))
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{
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return NULL;
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}
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if (!fileInfo->fileRecord->ParseAttrs())
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{
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if (fileInfo->fileRecord->IsCompressed())
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{
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return NULL;
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}
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else if (fileInfo->fileRecord->IsEncrypted())
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{
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return NULL;
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}
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else
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{
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return NULL;
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}
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}
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}
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else
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{
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return NULL;
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}
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dirs = dire;
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dire = filePath.find(_T('\\'), dirs+1);
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}
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string fileName = filePath.substr(dirs+1, filePath.size()-1);
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const _TCHAR* fileNameCStr = (const _TCHAR*)fileName.c_str();
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if (fileInfo->fileRecord->FindSubEntry(fileNameCStr, *(fileInfo->indexEntry)))
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{
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if (!fileInfo->fileRecord->ParseFileRecord(fileInfo->indexEntry->GetFileReference()))
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{
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return NULL;
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}
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fileInfo->fileRecord->SetAttrMask(MASK_DATA);
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if (!fileInfo->fileRecord->ParseAttrs())
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{
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return NULL;
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}
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fileInfo->data = (CAttrBase*)fileInfo->fileRecord->FindStream();
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return fileInfo;
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}
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return NULL;
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}
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extern "C" DWORD __declspec(dllexport) StealthReadFile(FileInfo_t* fileInfo, BYTE* buffer, DWORD bufferSize, ULONGLONG offset, DWORD* bytesRead, ULONGLONG* dataRemaining)
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{
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if (fileInfo->data)
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{
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ULONGLONG dataLength = (ULONGLONG)fileInfo->data->GetDataSize();
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ULONGLONG fullDataLength = dataLength;
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dataLength = dataLength - offset;
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if (dataLength > bufferSize)
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{
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dataLength = bufferSize;
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}
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if (dataLength > MAXUINT32)
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{
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return 1;
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}
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DWORD len;
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if (fileInfo->data->ReadData(offset, buffer, dataLength, &len) && len == dataLength)
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{
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*bytesRead = len;
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*dataRemaining = fullDataLength - len - offset;
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return 0; //Success
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}
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return 3;
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}
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return 2;
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}
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extern "C" void __declspec(dllexport) StealthCloseFile(FileInfo_t* fileInfo)
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{
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delete (fileInfo->data);
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delete (fileInfo->indexEntry);
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delete (fileInfo->volume);
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delete fileInfo;
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}
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