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KeePass Password Safe

, 1 Oct 2014 CPOL
KeePass is a free, open-source, light-weight and easy-to-use password safe.
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/*
  KeePass Password Safe - The Open-Source Password Manager
  Copyright (C) 2003-2014 Dominik Reichl <dominik.reichl@t-online.de>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "StdAfx.h"
#include "UpdateCheckEx.h"

#include "../../KeePassLibCpp/Util/StrUtil.h"
#include "../../KeePassLibCpp/Util/TranslateEx.h"
#include "../../KeePassLibCpp/PwManager.h" // For PWM_DEVSNAPSHOT
#include "../../KeePassLibCpp/IO/KpInternetStream.h"
#include "../Plugins/PluginMgr.h"
#include "../Plugins/KpApiImpl.h"
#include "../NewGUI/NewGUICommon.h"
#include "../NewGUI/TaskDialog/VistaTaskDialog.h"

#include "../UpdateInfoDlg.h"

typedef struct
{
	HWND hParent;
	CImageList* pImages;
	BOOL bUIOnlyOnUpdate;
} UC_INIT_STRUCT;

DWORD WINAPI CfuEx_Thread(LPVOID lpParameter);

static UC_INIT_STRUCT g_ucInitStruct;

CUpdateCheckEx::CUpdateCheckEx(HWND hParent, CImageList* pImages,
	BOOL bUIOnlyOnUpdate) :
	m_hParent(hParent), m_pImages(pImages), m_bUIOnlyOnUpdate(bUIOnlyOnUpdate)
{
}

HRESULT CUpdateCheckEx::Check(BOOL bRunInThread, HWND hParent, CImageList* pImages,
	BOOL bUIOnlyOnUpdate)
{
	HRESULT hRes = S_OK;

	if(bRunInThread == TRUE)
	{
		g_ucInitStruct.hParent = hParent;
		g_ucInitStruct.pImages = pImages;
		g_ucInitStruct.bUIOnlyOnUpdate = bUIOnlyOnUpdate;

		DWORD dwDummyID = 0; // Pointer may not be NULL on Windows 9x/Me
		HANDLE h = CreateThread(NULL, 0, CfuEx_Thread, NULL, 0, &dwDummyID);

		if((h != NULL) && (h != INVALID_HANDLE_VALUE)) CloseHandle(h);
		else hRes = E_FAIL;
	}
	else
	{
		// CStatusDialogEx dlg(hParent, false, true);
		// dlg.Show();
		// std_string str = TRL("Check for Updates");
		// str += _T("...");
		// dlg.SetStatus(true, str.c_str());

		CUpdateCheckEx uc(hParent, pImages, bUIOnlyOnUpdate);
		uc._RunCheck(NULL);

		// dlg.Release();
	}

	ASSERT(SUCCEEDED(hRes));
	return hRes;
}

DWORD WINAPI CfuEx_Thread(LPVOID lpParameter)
{
	UNREFERENCED_PARAMETER(lpParameter);

	CUpdateCheckEx uc(g_ucInitStruct.hParent, g_ucInitStruct.pImages,
		g_ucInitStruct.bUIOnlyOnUpdate);
	uc._RunCheck(NULL);

	return 0;
}

void CUpdateCheckEx::_RunCheck(void* pDlg)
{
	UC_COMPONENTS_LIST vInstalled;
	CUpdateCheckEx::GetInstalledComponents(vInstalled, true);

	BYTE* pb = NULL;
	std_string strError;
	HRESULT hRes = CUpdateCheckEx::DownloadInfoFile(&pb, strError);
	if(FAILED(hRes))
	{
		SAFE_DELETE_ARRAY(pb);

		_FinalReport(vInstalled, strError.c_str(), true, 0, pDlg);
		return;
	}

	UC_COMPONENTS_LIST vAvailable;
	hRes = CUpdateCheckEx::ParseInfoFile(pb, vAvailable);
	SAFE_DELETE_ARRAY(pb);
	if(FAILED(hRes))
	{
		_FinalReport(vInstalled, TRL("Loading error"), true, 0, pDlg);
		return;
	}

	CUpdateCheckEx::CopyAvailableVersions(vAvailable, vInstalled);

	std_string strReport;
	DWORD dwUpdates = 0;
	CUpdateCheckEx::CompareVersions(vInstalled, true, strReport, dwUpdates);
	_FinalReport(vInstalled, strReport.c_str(), false, dwUpdates, pDlg);
}

void CUpdateCheckEx::_FinalReport(const UC_COMPONENTS_LIST& vInstalled,
	LPCTSTR lpResult, bool bError, DWORD dwUpdates, void* pDlg)
{
	UNREFERENCED_PARAMETER(pDlg);

	LPCTSTR lpMsg = ((lpResult != NULL) ? lpResult : _T(""));

	bool bShowDialog = true;
	if(m_bUIOnlyOnUpdate == TRUE) bShowDialog = (dwUpdates > 0);
	if(m_pImages == NULL) bShowDialog = false;

	if(bShowDialog)
	{
		// if(pDlg != NULL) pDlg->Release();

		// FromHandle, not FromHandlePermanent, due to other thread
		CUpdateInfoDlg dlg(CWnd::FromHandle(m_hParent));
		dlg.InitEx(m_pImages, &vInstalled, lpResult);
		NewGUI_DoModal(&dlg);
	}
	else
	{
		if(bError || (dwUpdates > 0))
			CKpApiImpl::Instance().SetStatusBarText(lpMsg);
	}
}

HRESULT CUpdateCheckEx::DownloadInfoFile(BYTE** ppbData, std_string& strError)
{
	if(ppbData == NULL) { ASSERT(FALSE); return E_POINTER; }
	*ppbData = NULL;

	/* TCHAR tszFile[MAX_PATH + 34];
	ZeroMemory(tszFile, sizeof(TCHAR) * (MAX_PATH + 34));

	URLDownloadToCacheFile(NULL, PWM_URL_VERSION, tszFile, URLOSTRM_GETNEWESTVERSION,
		0, NULL);

	if(_tcslen(tszFile) != 0)
	{
		FILE* fp = NULL;
		_tfopen_s(&fp, tszFile, _T("rb"));

		if(fp != NULL)
		{
			fseek(fp, 0, SEEK_END);
			const DWORD uFileSize = static_cast<DWORD>(ftell(fp));
			fseek(fp, 0, SEEK_SET);

			if(uFileSize != 0)
			{
				BYTE* pDataBuf = new BYTE[uFileSize + 2];

				fread(pDataBuf, 1, uFileSize, fp);
				fclose(fp);

				pDataBuf[uFileSize] = 0;
				pDataBuf[uFileSize + 1] = 0;

				*ppbData = pDataBuf;
			}
			else
			{
				strError = TRL("Cache error (cannot open cached file).");
				return E_ACCESSDENIED;
			}
		}
		else
		{
			strError = TRL("Cache error (cannot open cached file).");
			return E_ACCESSDENIED;
		}
	}
	else
	{
		strError = TRL("Connect failed, cannot check for updates.");
		return E_ACCESSDENIED;
	} */

	CKpInternetStream s(PWM_URL_VERSION, false);
	s.SetConnectOptions(5000, 1);
	s.SetTransferOptions(5000);

	std::vector<BYTE> vData;
	HRESULT r = s.ReadToEnd(vData);
	s.Close();
	if(FAILED(r) || (vData.size() == 0))
	{
		strError = TRL("Connect failed, cannot check for updates.");
		return r;
	}

	*ppbData = new BYTE[vData.size() + 2];
	(*ppbData)[vData.size()] = 0;
	(*ppbData)[vData.size() + 1] = 0;
	memcpy(*ppbData, &vData[0], vData.size());

	strError.clear();
	return S_OK;
}

HRESULT CUpdateCheckEx::ParseInfoFile(BYTE* pbData, UC_COMPONENTS_LIST& vList)
{
	if(pbData == NULL) { ASSERT(FALSE); return E_POINTER; }

	vList.clear();

	TCHAR* lpData = _UTF8ToString(pbData);
	if(lpData == NULL) { ASSERT(FALSE); return E_FAIL; }
	std_string strData = lpData;
	SAFE_DELETE_ARRAY(lpData);

	std::vector<std_string> vItems;
	SU_Split(vItems, strData, _T("\r\n"));

	for(size_t i = 0; i < vItems.size(); ++i)
		CUpdateCheckEx::AddComponent(vItems[i], vList);

	return S_OK;
}

void CUpdateCheckEx::AddComponent(const std_string& strLine, UC_COMPONENTS_LIST& vList)
{
	if(strLine.size() == 0) return;

	if(strLine[0] == _T('#')) { ASSERT(FALSE); return; } // Reserved for future use

	std::vector<std_string> vInfo;
	SU_Split(vInfo, strLine, _T("#"));
	if(vInfo.size() < 2) { ASSERT(FALSE); return; }

	std::vector<std_string> vVersion;
	SU_Split(vVersion, vInfo[1], _T("."));
	if(vVersion.size() < 4) { ASSERT(FALSE); return; }

	UC_COMPONENT_INFO c;
	c.strName = vInfo[0];
	c.qwVerAvailable = ((static_cast<UINT64>(_ttol(vVersion[0].c_str())) << 48) |
		(static_cast<UINT64>(_ttol(vVersion[1].c_str())) << 32) |
		(static_cast<UINT64>(_ttol(vVersion[2].c_str())) << 16) |
		static_cast<UINT64>(_ttol(vVersion[3].c_str())));

	vList.push_back(c);
}

void CUpdateCheckEx::GetInstalledComponents(UC_COMPONENTS_LIST& vList,
	bool bDefaultToUnknownStatus)
{
	vList.clear();

	UC_COMPONENT_INFO kp;
	kp.strName = PWM_PRODUCT_NAME_SHORT;
	kp.qwVerInstalled = PWM_VERSION_QW;
	vList.push_back(kp);

	const CPluginManager& pm = CPluginManager::Instance();

	typedef std::vector<KP_PLUGIN_INSTANCE>::const_iterator PlgIter;
	for(PlgIter it = pm.m_plugins.begin(); it != pm.m_plugins.end(); ++it)
	{
		if((it->hinstDLL == NULL) || (it->pInterface == NULL))
		{
			ASSERT(FALSE);
			continue;
		}

		UC_COMPONENT_INFO c;
		c.strName = it->strName;
		c.qwVerInstalled = it->qwVersion;

		vList.push_back(c);
	}

	for(size_t i = 0; i < vList.size(); ++i)
	{
		if(bDefaultToUnknownStatus)
		{
			if(i > 0) vList[i].strStatus = TRL("Plugin unknown.");
			else { vList[i].strStatus = TRL("Unknown"); vList[i].strStatus += _T("."); }

			vList[i].iStatusImage = 44;
		}

		vList[i].qwVerAvailable = 0;
	}

	SortComponentsList(vList);
}

bool _UC_Component_Compare(UC_COMPONENT_INFO x, UC_COMPONENT_INFO y)
{
	if(x.strName == PWM_PRODUCT_NAME_SHORT) return true;
	if(y.strName == PWM_PRODUCT_NAME_SHORT) return false;

	return (x.strName.compare(y.strName) <= 0);
}

void CUpdateCheckEx::SortComponentsList(UC_COMPONENTS_LIST& vList)
{
	std::sort(vList.begin(), vList.end(), _UC_Component_Compare);
}

void CUpdateCheckEx::CopyAvailableVersions(const UC_COMPONENTS_LIST& vAvailable,
	UC_COMPONENTS_LIST& vOut)
{
	for(size_t i = 0; i < vOut.size(); ++i)
	{
		for(size_t j = 0; j < vAvailable.size(); ++j)
		{
			if(vAvailable[j].strName == vOut[i].strName)
				vOut[i].qwVerAvailable = vAvailable[j].qwVerAvailable;
		}
	}
}

void CUpdateCheckEx::CompareVersions(UC_COMPONENTS_LIST& v, bool bSetStatus,
	std_string& strReport, DWORD& dwUpdates)
{
	DWORD dwAvUpdates = 0;
	for(size_t i = 0; i < v.size(); ++i)
	{
		const UINT64 dwIn = v[i].qwVerInstalled;
		const UINT64 dwAv = v[i].qwVerAvailable;

		if(dwIn == dwAv)
		{
			if(bSetStatus)
			{
				v[i].strStatus = TRL("Up to date.");
				v[i].iStatusImage = 53;
			}
		}
		else if(dwIn < dwAv)
		{
			if(bSetStatus)
			{
				v[i].strStatus = TRL("New version available.");
				v[i].iStatusImage = 61;
			}

			++dwAvUpdates;
		}
		else if((dwIn > dwAv) && (dwAv != 0))
		{
			if(bSetStatus)
			{
				v[i].strStatus = TRL("Pre-release version.");
				v[i].iStatusImage = 39;
			}
		}
	}

	dwUpdates = dwAvUpdates;
	if(dwAvUpdates == 0) strReport = TRL("No updates available.");
	else if(dwAvUpdates == 1) strReport = TRL("1 update is available!");
	else
	{
		CString strFmt;
		strFmt.Format(TRL("%u updates are available!"), dwAvUpdates);
		strReport = (LPCTSTR)strFmt;
	}
}

void CUpdateCheckEx::EnsureConfigured(BOOL* pCheck, BOOL* pConfig,
	HWND hParent, HINSTANCE hInstance)
{
	if((pCheck == NULL) || (pConfig == NULL)) { ASSERT(FALSE); return; }
	if((*pConfig) != FALSE) return;

#ifdef PWM_DEVSNAPSHOT
	UNREFERENCED_PARAMETER(hParent);
	UNREFERENCED_PARAMETER(hInstance);
#else
	// If the user has manually enabled the automatic update check
	// before, there's no need to ask him again
	if((*pCheck) == FALSE)
	{
		CString strHdr = TRL("KeePass can automatically check for updates on each program start.");
		
		CString strSub = TRL("Automatic update checks are performed unintrusively in the background. A notification is only displayed when an update is available. Updates are not downloaded or installed automatically.");
		strSub += _T("\r\n\r\n");
		strSub += TRL("No personal information is sent to the KeePass web server. KeePass just downloads a small version information file and compares the available version with the installed version.");

		CString strEnable = TRL("&Enable");
		strEnable += _T(" (");
		strEnable += TRL("recommended");
		strEnable += _T(")");

		CString strQ = TRL("Enable automatic update check?");

		CVistaTaskDialog dlg(hParent, hInstance, true);
		dlg.SetContent(strHdr);
		dlg.SetMainInstruction(strQ);
		dlg.SetWindowTitle(PWM_PRODUCT_NAME_SHORT);
		dlg.AddButton(strEnable, NULL, IDYES);
		dlg.AddButton(TRL("&Disable"), NULL, IDNO);
		dlg.SetIcon(MTDI_QUESTION);
		dlg.SetFooterText(strSub);
		dlg.SetFooterIcon(TD_INFORMATION_ICON);

		int dr = dlg.ShowDialog(NULL);
		if(dr < 0)
		{
			CString strMain = strHdr;
			strMain += _T("\r\n\r\n");
			strMain += strSub;
			strMain += _T("\r\n\r\n");
			strMain += strQ;

			dr = MessageBox(hParent, strMain, PWM_PRODUCT_NAME_SHORT,
				MB_YESNO | MB_ICONQUESTION);
		}

		*pCheck = (((dr == IDOK) || (dr == IDYES)) ? TRUE : FALSE);
	}
#endif

	*pConfig = TRUE;
}

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About the Author

Dominik Reichl
Software Developer
Germany Germany
Dominik started programming in Omikron Basic, a programming language for the good old Atari ST. After this, there was some short period of QBasic programming on the PC, but soon he began learning C++, which is his favorite language up to now.
 
Today, his programming experience includes C / C++ / [Visual] C++ [MFC], C#/.NET, Java, JavaScript, PHP and HTML and the basics of pure assembler.
 
He is interested in almost everything that has to do with computing, his special interests are security and data compression.
 
You can find his latest freeware, open-source projects and all articles on his homepage: http://www.dominik-reichl.de/

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