/*

* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifdef _MSC_VER

#pragma warning (disable: 4786)

#endif 

#include <iostream>

#include <sstream>    // for strstream, wistringstream

#include <stdio.h>

#include <sys/stat.h>

#include <algorithm>

#include <functional>

#include <set>

#include "dumpsis.h"

#include "siscontroller.h"

#include "exception.h"

		: 	iController(NULL),

			iSisFileName(aSISFileName),

			iVerbose(aVerbose),

			iIsStub(false)

	{

	bool isSiSFile = CSISContents::IsSisFile(aSISFileName);

	if(isSiSFile)

		{

		iSisContents.Load (iSisFileName);

		iController = &iSisContents.Controller();

		}

	else

		{

		iIsStub = true;

		iController = new CSISController;

		SISLogger::Log(L"Dumping Stub SIS Controller\n");

		iController->Load(iSisFileName);

		}

	}

CDumpSis::~CDumpSis()

	{

	if(iIsStub)

		{

		delete iController;

		}

	}

void CDumpSis::CreatePackage(const std::wstring& aPkgFileName)

	{

	std::wistringstream inStream (std::ios::in | std::ios::out);

	std::wostream outStream (inStream.rdbuf ());

	if(iIsStub)

		{

		}

	else

		{

		}

	std::wstring str = inStream.str();

	WriteToFile(aPkgFileName, reinterpret_cast<const TUint8*>(str.c_str()), str.length()*2);

	}

void CDumpSis::CreatePackage(const CSISController& aSisController, const std::wstring& aPkgFileName)

	{

	std::wistringstream inStream (std::ios::in | std::ios::out);

	std::wostream outStream (inStream.rdbuf ());

	std::wstring str = inStream.str();

	}

void CDumpSis::ExtractFiles(const std::wstring& aTargetDir, TExtractionLevel aLevel)

	{

	std::wstring targetDir = aTargetDir;

	CreateTargetDir(targetDir);

	switch(aLevel)

		{

		case EOnlyPackage:

			{

			ExtractBasePackageFile(targetDir);

			break;

			}

		case ECertificates:

			{

			ExtractCertificates(*iController, targetDir);

			break;

			}

		case EBaseFiles:

			{

			ExtractFiles(*iController, targetDir);

			break;

			}

		case EAllDataFiles:

			{

			ExtractBasePackageFile(targetDir);	

			ExtractFiles(*iController, targetDir);

			ExtractNestedSisFile(targetDir, *iController, false, 0, iSisContents.SisData().DataUnitCount());

			break;

			}

		case EAllButCerts:

			{

			ExtractBasePackageFile(targetDir);	

			ExtractFiles(*iController, targetDir);

			ExtractNestedSisFile(targetDir, *iController, true, 0, iSisContents.SisData().DataUnitCount());

			break;

			}

		case EEverything:

			{

			ExtractBasePackageFile(targetDir);	

			ExtractFiles(*iController, targetDir);

			ExtractNestedSisFile(targetDir, *iController, true, 0, iSisContents.SisData().DataUnitCount());

			ExtractAllCertificates(targetDir);

			break;

			}

		}

	}

void CDumpSis::ExtractAllCertificates(const std::wstring& aTargetDir)

	{

	ExtractCertificates(*iController, aTargetDir);

	TControllerMap controllerList;

	iController->InstallBlock().GetEmbeddedControllers(controllerList);

	for (TControllerMapConstIter iter = controllerList.begin(); iter != controllerList.end(); ++iter)

		{

		wchar_t pathName[20];

		swprintf(pathName, 20, L"sis%d", iter->first);

		std::wstring extractionPath = aTargetDir + KSisDirectorySeparator + pathName;

		CreateTargetDir(extractionPath);

		ExtractCertificates(*iter->second, extractionPath);

		}	

	}

void CDumpSis::ExtractCertificates(const CSISController& aSisController, const std::wstring& aTargetDir)

	{

	TUint32 certChainCount = aSisController.SignatureCount();

	for(TUint32 i = 0; i < certChainCount; ++i)

		{

		wchar_t certName[30];

		swprintf(certName, 30, L"certChain%d%d.der", aSisController.DataIndex(), i+1);

		std::wstring certFullPath = aTargetDir + KSisDirectorySeparator + certName;

		const CCertChainData certChain = aSisController.SignatureCertChain(i).CertificateChain();

		const TUint8* certChainData = certChain.CertificateData().Data();

		TUint32 certSize =  certChain.CertificateData().Size();

		WriteToFile(certFullPath, certChainData, certSize);

		}

	}

void CDumpSis::ExtractBasePackageFile(const std::wstring& aTargetDir)

	{

	std::wstring pkgFileName = iSisFileName;

	pkgFileName = FixPathDelimiters(pkgFileName);

	SisFileNameToPkgFileName(pkgFileName);

	pkgFileName = aTargetDir + KSisDirectorySeparator + pkgFileName;

	CreatePackage(pkgFileName);

	}

void CDumpSis::ExtractFiles(const CSISController& aSisController, const std::wstring& aTargetDir, int aBaseIndex)

	{

	if(iIsStub)

		{

		// There is no data associated with stub sis file.

		return;

		}

	TFileDescList fileList;

	aSisController.InstallBlock().GetFileList(fileList);

	// Controller's index is relative to base controller's index.

	TUint32 dataIndex = aBaseIndex + aSisController.DataIndex();

	if(dataIndex >= iSisContents.SisData().DataUnitCount())

		{

		return;

		}

	const CSISDataUnit& dataUnit = iSisContents.SisData().DataUnit(dataIndex);

	const CSISLogo& logo = aSisController.Logo();

	if(!logo.WasteOfSpace())

		{

		const CSISFileDescription& logoFile = logo.FileDesc();

		const wchar_t* fileName = logoFile.GetFileName();

		std::wstring filePath = aTargetDir + KSisDirectorySeparator + fileName;

		const CSISFileData& fileData = dataUnit.FileData(logoFile.FileIndex());

		WriteToFile(filePath, fileData.Data(), fileData.UncompressedSize());

		delete[] const_cast<wchar_t*>(fileName);

		}

	if(dataUnit.FileCount() <= 0)

		{

		return; // No files present to extract.

		}

	for(int i = 0; i < fileList.size(); ++i)

		{

		const CSISFileDescription* fdesc = fileList[i];

		const CSISFileData& fileData = dataUnit.FileData(fdesc->FileIndex());

		}

	}

void CDumpSis::ExtractNestedSisFile(const std::wstring& aTargetDir, 

									const CSISController& aController,

									bool aExtractSis,

									int aStartIndex, 

									int aEndIndex)

	{

	TControllerMap controllerList;

	aController.InstallBlock().GetEmbeddedControllers(controllerList);

	for (TControllerMapConstIter iter = controllerList.begin(); iter != controllerList.end(); ++iter)

		{

		TControllerMapConstIter nextIter = iter;

		int curindex = iter->second->DataIndex();

		int maxDataUnit = 0;

		if (++nextIter != controllerList.end())

			{

			maxDataUnit = nextIter->first;

			}

		else

			{

			maxDataUnit = aEndIndex;

			}

		wchar_t pathName[20];

#ifdef _MSC_VER

		swprintf(pathName, L"sis%d", iter->second->GetControllerID());

#else

		swprintf(pathName, 20, L"sis%d", iter->second->GetControllerID());

#endif //_MSC_VER

		if(aExtractSis)

			{

			std::wstring sisPath = aTargetDir + KSisDirectorySeparator + pathName + L".sis";

			CSISController* ctl = const_cast<CSISController*>(iter->second);

			CreateEmbeddedSis(sisPath, *ctl, aStartIndex + iter->first, maxDataUnit);

			}

		std::wstring extractionPath = aTargetDir + KSisDirectorySeparator + pathName;

		CreateTargetDir(extractionPath);

		ExtractFiles(*iter->second, extractionPath, aStartIndex);

		extractionPath = extractionPath + KSisDirectorySeparator + pathName + L".pkg";

		CreatePackage(*iter->second, extractionPath);

		ExtractNestedSisFile(aTargetDir, *(iter->second), aExtractSis, aStartIndex + iter->first, maxDataUnit);

		}

	}

void CDumpSis::CreateTargetDir(std::wstring& aTargetDir)

	{

	aTargetDir = FixPathDelimiters(aTargetDir);

	if(CreateDir(aTargetDir.c_str()) != 0)

		{

		return;

		}

	int err = GetErrorValue();

	switch (err)

		{

		case ERROR_ALREADY_EXISTS:

			{

			int attrs;

			if (0xFFFFFFFF != (attrs = FileAttributes(aTargetDir.c_str())))

				{

				if (!(attrs & FILE_ATTRIBUTE_DIRECTORY))

					{

					throw CSISException::EDirIsFile;

					}

				else if (attrs & FILE_ATTRIBUTE_READONLY)

					{

					throw CSISException::EPermissionDenied;

					}

				}

			else

				{

				throw CSISException::EInvalidDestination;

				}

			break;

			}

		case ERROR_PATH_NOT_FOUND:

			CreateDirectoriesRecursively(aTargetDir);

			break;

		case ERROR_ACCESS_DENIED:

			throw CSISException::EInvalidDestination;

			break;

		case ERROR_INVALID_NAME:

			aTargetDir = L".";

			break;

		default:

			throw CSISException::EInvalidDestination;

		}

	}

void CDumpSis::CreateDirectoriesRecursively(std::wstring aTargetDir)

	{

	int pos = aTargetDir.find(L'/');

	if(0 == pos)

		{

		// Path starting with "/" can be skipped

		pos = aTargetDir.find(L'/', 1);

		}

	while(pos != std::wstring::npos)

		{

		std::wstring path = aTargetDir.substr(0, pos);

		if (0 == CreateDir(path.c_str()))

			{

			int err = GetErrorValue();

			switch(err)

				{

				case ERROR_ACCESS_DENIED:

					{

					// If this is caused by a path like "D:" we can continue

					bool validPath = ((aTargetDir.size() >= 2) && (isalpha(aTargetDir[0])) && (aTargetDir[1] ==L':'));

					if (!validPath)

						{

						throw CSISException::EInvalidDestination;

						}

					break;

					}

				case ERROR_ALREADY_EXISTS:

					// NOOP

					break;

				default:

					throw CSISException::EInvalidDestination;