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			252 lines
		
	
	
		
			8.0 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			252 lines
		
	
	
		
			8.0 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/******************************************************************************
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 * Icinga 2                                                                   *
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 * Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org)    *
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 *                                                                            *
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 * This program is free software; you can redistribute it and/or              *
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 * modify it under the terms of the GNU General Public License                *
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 * as published by the Free Software Foundation; either version 2             *
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 * of the License, or (at your option) any later version.                     *
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 *                                                                            *
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 * This program is distributed in the hope that it will be useful,            *
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
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 * 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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 * You should have received a copy of the GNU General Public License          *
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 * along with this program; if not, write to the Free Software Foundation     *
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
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 ******************************************************************************/
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#include <windows.h>
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#include <Shlwapi.h>
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#include <iostream>
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#include <wuapi.h>
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#include <wuerror.h>
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#include "check_update.h"
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#define VERSION 1.0
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#define CRITERIA L"(IsInstalled = 0 and CategoryIDs contains '0fa1201d-4330-4fa8-8ae9-b877473b6441') or (IsInstalled = 0 and CategoryIDs contains 'E6CF1350-C01B-414D-A61F-263D14D133B4')"
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namespace po = boost::program_options;
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static BOOL debug = FALSE;
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INT wmain(INT argc, WCHAR **argv) 
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{
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	printInfoStruct printInfo = { FALSE, FALSE, 0, FALSE, FALSE, FALSE };
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	po::variables_map vm;
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	INT ret = parseArguments(argc, argv, vm, printInfo);
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	if (ret != -1)
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		return ret;
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	ret = check_update(printInfo);
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	if (ret != -1)
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		return ret;
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	return printOutput(printInfo);
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}
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INT parseArguments(INT ac, WCHAR **av, po::variables_map& vm, printInfoStruct& printInfo) 
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{
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	WCHAR namePath[MAX_PATH];
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	GetModuleFileName(NULL, namePath, MAX_PATH);
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	WCHAR *progName = PathFindFileName(namePath);
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	po::options_description desc;
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	desc.add_options()
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		("help,h", "Print help message and exit")
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		("version,V", "Print version and exit")
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		("debug,d", "Verbose/Debug output")
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		("warning,w", "Warn if there are important updates available")
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		("critical,c", "Critical if there are important updates that require a reboot")
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		("possible-reboot", "Treat \"update may need reboot\" as \"update needs reboot\"")
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		;
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	po::basic_command_line_parser<WCHAR> parser(ac, av);
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	try {
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		po::store(
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			parser
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			.options(desc)
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			.style(
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			po::command_line_style::unix_style |
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			po::command_line_style::allow_long_disguise)
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			.run(),
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			vm);
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		vm.notify();
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	} catch (std::exception& e) {
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		std::cout << e.what() << '\n' << desc << '\n';
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		return 3;
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	}
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	if (vm.count("help")) {
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		std::wcout << progName << " Help\n\tVersion: " << VERSION << '\n';
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		wprintf(
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			L"%s is a simple program to check a machines required updates.\n"
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			L"You can use the following options to define its behaviour:\n\n", progName);
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		std::cout << desc;
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		wprintf(
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			L"\nAfter some time, it will then output a string like this one:\n\n"
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			L"\tUPDATE WARNING 8 | updates=8;1;1;0\n\n"
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			L"\"UPDATE\" being the type of the check, \"WARNING\" the returned status\n"
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			L"and \"8\" is the number of important updates updates.\n"
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			L"The performance data is found behind the \"|\", in order:\n"
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			L"returned value, warning threshold, critical threshold, minimal value and,\n"
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			L"if applicable, the maximal value. Performance data will only be displayed when\n"
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			L"you set at least one threshold\n\n"
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			L"An update counts as important when it is part of the Security- or\n"
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			L"CriticalUpdates group.\n"
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			L"Consult the msdn on WSUS Classification GUIDs for more information.\n"
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			L"%s' exit codes denote the following:\n"
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			L" 0\tOK,\n\tNo Thresholds were broken or the programs check part was not executed\n"
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			L" 1\tWARNING,\n\tThe warning, but not the critical threshold was broken\n"
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			L" 2\tCRITICAL,\n\tThe critical threshold was broken\n"
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			L" 3\tUNKNOWN, \n\tThe program experienced an internal or input error\n\n"
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			L"%s works different from other plugins in that you do not set thresholds\n"
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			L"but only activate them. Using \"-w\" triggers warning state if there are not\n"
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			L"installed and non-optional updates. \"-c\" triggers critical if there are\n"
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			L"non-optional updates that require a reboot.\n"
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			L"The \"possible-reboot\" option is not recommended since this true for nearly\n"
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			L"every update."
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			, progName, progName);
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		std::cout << '\n';
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		return 0;
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	} if (vm.count("version")) {
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		std::cout << "Version: " << VERSION << '\n';
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		return 0;
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	}
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	if (vm.count("warning"))
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		printInfo.warn = TRUE;
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	if (vm.count("critical"))
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		printInfo.crit = TRUE;
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	if (vm.count("possible-reboot"))
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		printInfo.careForCanRequest = TRUE;
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	if (vm.count("debug"))
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		debug = TRUE;
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	return -1;
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}
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INT printOutput(const printInfoStruct& printInfo)
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{
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	if (debug)
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		std::wcout << L"Constructing output string" << '\n';
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	state state = OK;
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	std::wstring output = L"UPDATE ";
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	if (printInfo.important)
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		state = WARNING;
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	if (printInfo.reboot)
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		state = CRITICAL;
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	switch (state) {
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	case OK:
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		output.append(L"OK ");
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		break;
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	case WARNING:
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		output.append(L"WARNING ");
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		break;
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	case CRITICAL:
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		output.append(L"CRITICAL ");
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		break;
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	}
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	std::wcout << output << printInfo.numUpdates << L" | update=" << printInfo.numUpdates << L";"
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		<< printInfo.warn << L";" << printInfo.crit << L";0;" << '\n';
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	return state;
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}
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INT check_update(printInfoStruct& printInfo) 
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{
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	if (debug)
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		std::wcout << "Initializing COM library" << '\n';
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	CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
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	ISearchResult *pResult;
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	IUpdateSession *pSession;
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	IUpdateSearcher *pSearcher;
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	BSTR criteria = NULL;
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	HRESULT err;
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	if (debug)
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		std::wcout << "Creating UpdateSession and UpdateSearcher" << '\n';
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	CoCreateInstance(CLSID_UpdateSession, NULL, CLSCTX_INPROC_SERVER, IID_IUpdateSession, (LPVOID*)&pSession);
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	pSession->CreateUpdateSearcher(&pSearcher);
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	/*
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	 IsInstalled = 0: All updates, including languagepacks and features
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	 BrowseOnly = 0: No features or languagepacks, security and unnamed
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	 BrowseOnly = 1: Nothing, broken
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	 RebootRequired = 1: Reboot required
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	*/
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	criteria = SysAllocString(CRITERIA);
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	// http://msdn.microsoft.com/en-us/library/windows/desktop/aa386526%28v=vs.85%29.aspx
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	// http://msdn.microsoft.com/en-us/library/ff357803%28v=vs.85%29.aspx
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	if (debug)
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		std::wcout << L"Querrying updates from server" << '\n';
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	err = pSearcher->Search(criteria, &pResult);
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	if (!SUCCEEDED(err))
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		goto die;
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	SysFreeString(criteria);
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	IUpdateCollection *pCollection;
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	IUpdate *pUpdate;
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	LONG updateSize;
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	pResult->get_Updates(&pCollection);
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	pCollection->get_Count(&updateSize);
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	if (updateSize == 0)
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		return -1;
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	printInfo.numUpdates = updateSize;
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//	printInfo.important = printInfo.warn;
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	IInstallationBehavior *pIbehav;
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	InstallationRebootBehavior updateReboot;
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	for (LONG i = 0; i < updateSize; i++) {
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		pCollection->get_Item(i, &pUpdate);
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		if (debug) {
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			std::wcout << L"Checking reboot behaviour of update number " << i << '\n';
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		}
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		pUpdate->get_InstallationBehavior(&pIbehav);
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		pIbehav->get_RebootBehavior(&updateReboot);
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		if (updateReboot == irbAlwaysRequiresReboot) {
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			printInfo.reboot = TRUE;
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			if (debug)
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				std::wcout << L"It requires reboot" << '\n';
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			continue;
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		}
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		if (printInfo.careForCanRequest && updateReboot == irbCanRequestReboot)
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			if (debug)
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				std::wcout << L"It requires reboot" << '\n';
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			printInfo.reboot = TRUE;
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	}
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	if (debug)
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		std::wcout << L"Cleaning up and returning" << '\n';
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	SysFreeString(criteria);
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	CoUninitialize();
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	return -1;
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die:
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	die(err);
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	CoUninitialize();
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	if (criteria)
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		SysFreeString(criteria);
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	return 3;
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} |