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Copy pathHashManager.cpp
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172 lines (137 loc) · 4.59 KB
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//-----------------------------------------------------------------------------
//----- Copyright deersoft 2015 - 2017 www.deersoft.de
//-----------------------------------------------------------------------------
#include "Prefix/StdAfx.h"
#include "HashManager.h"
#include "sha256/sha256.h"
#include "GDTFManager.h"
#include "XmlFileHelper.h"
bool HashManager::HashManager::CreateHashForFile(const IFileIdentifierPtr& fileToHash, SceneData::ISceneDataZipBuffer& outHashsumFile)
{
TXString hash;
if (CreateHash(fileToHash, hash))
{
outHashsumFile.SetData((void*) hash.GetCharPtr(), hash.GetLength());
return true;
}
return false;
}
bool HashManager::HashManager::CreateHashForBuffer(SceneData::ISceneDataZipBuffer &bufferToHash, SceneData::ISceneDataZipBuffer &hashFileBuffer)
{
TXString hash;
if(CreateHash(bufferToHash, hash))
{
size_t length = hash.GetLength();
void* data = malloc(length * sizeof(char));
const char* hashHar = hash.GetCharPtr();
memcpy(data, hashHar, length);
// Set Hash File
hashFileBuffer.SetData(data, length);
// Housekeeping
std::free(data);
return true;
}
return false;
}
bool HashManager::HashManager::CheckHashForFile(const IFileIdentifierPtr& fileToHash, const IFileIdentifierPtr& hashsumFile)
{
//--------------------------------------------------------------------------------
// Generate the hash for the file
TXString hash;
if ( CreateHash(fileToHash, hash) )
{
TXString storedHash;
//--------------------------------------------------------------------------------
// Read the hash file
IRawOSFilePtr rawFile (IID_RawOSFile);
if (VCOM_SUCCEEDED(rawFile->Open(hashsumFile, true, false, false, false)))
{
Uint64 length = 0;
if (VCOM_SUCCEEDED(rawFile->GetFileSize(length)))
{
// Create buffer
void* buffer = malloc (sizeof(char) * length);
if (VCOM_SUCCEEDED(rawFile->Read(0, length, buffer)))
{
// Read file
storedHash = TXString((char*)buffer, length);
ASSERTN(kEveryone, hash.IsEmpty() == false);
ASSERTN(kEveryone, storedHash.IsEmpty() == false);
if (hash == storedHash) { return true; }
}
// Housekeeping
std::free(buffer);
}
}
}
return false;
}
bool HashManager::HashManager::CreateHash(const IFileIdentifierPtr& fileToHash, TXString& outHash)
{
//-------------------------------------------------------------------------------------------------
// Check if there is a pointer
ASSERTN(kEveryone, fileToHash != nullptr);
if (fileToHash == nullptr) { return false; }
//-------------------------------------------------------------------------------------------------
// Check if there a file
bool existsOnDisk = false;
fileToHash->ExistsOnDisk(existsOnDisk);
ASSERTN(kEveryone, existsOnDisk);
if (existsOnDisk == false) { return false; }
//-------------------------------------------------------------------------------------------------
// Do the magic
IRawOSFilePtr file (IID_RawOSFile);
if (VCOM_SUCCEEDED(file->Open(fileToHash, true, false, false, false)))
{
Uint64 length = 0;
if(VCOM_SUCCEEDED(file->GetFileSize(length)))
{
void* buffer = malloc(sizeof(char) * length);
if(VCOM_SUCCEEDED(file->Read(0, length, buffer)))
{
SHA256 hashObj;
hashObj.add(buffer, length);
TXString hash = hashObj.getHash();
outHash = hash;
return true;
}
// Housekeeping
std::free(buffer);
}
}
return false;
}
bool HashManager::HashManager::CreateHash(SceneData::ISceneDataZipBuffer& bufferToHash, TXString& outHash)
{
// Prepare Storage
size_t bufferSize = 0;
void* ptr = nullptr;
if(VCOM_SUCCEEDED(bufferToHash.GetDataSize(bufferSize)) && VCOM_SUCCEEDED(bufferToHash.GetData(ptr)))
{
// Create the hash
SHA256 hashObj;
hashObj.add(ptr, bufferSize);
// Store the hash
TXString hash = hashObj.getHash();
outHash = hash;
return true;
}
return false;
}
bool HashManager::HashManager::CheckHashForBuffer(SceneData::ISceneDataZipBuffer& bufferToHash, SceneData::ISceneDataZipBuffer& hashsumFile)
{
TXString bufferHash;
if(::HashManager::HashManager::CreateHash(bufferToHash, bufferHash))
{
void* ptr = nullptr;
size_t length = 0;
if(VCOM_SUCCEEDED(hashsumFile.GetData(ptr))&&VCOM_SUCCEEDED(hashsumFile.GetDataSize(length)))
{
// Create the hash string
TXString storedHash ((char*)ptr, length);
// Check if they are the sameb
if(storedHash == bufferHash){ return true; }
}
}
return false;
}