Java tutorial
/* * RHQ Management Platform * Copyright (C) 2005-2008 Red Hat, Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, version 2, as * published by the Free Software Foundation, and/or the GNU Lesser * General Public License, version 2.1, also as published by the Free * Software Foundation. * * 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 and the GNU Lesser General Public License * for more details. * * You should have received a copy of the GNU General Public License * and the GNU Lesser General Public License along with this program; * if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.rhq.plugins.platform.win; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashSet; import java.util.Set; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hyperic.sigar.win32.RegistryKey; import org.hyperic.sigar.win32.Win32Exception; import org.rhq.core.domain.configuration.Configuration; import org.rhq.core.domain.configuration.PropertySimple; import org.rhq.core.domain.content.PackageDetailsKey; import org.rhq.core.domain.content.PackageType; import org.rhq.core.domain.content.transfer.ResourcePackageDetails; /** * Provides for discovery of Windows Installed Software. Uses the uninstall registry that's * used by Add/Remove Programs. Only supports discovery, not installation. * * @author Greg Hinkle */ public class WindowsSoftwareDelegate { private final Log log = LogFactory.getLog(WindowsSoftwareDelegate.class); public Set<ResourcePackageDetails> discoverInstalledSoftware(PackageType type) { Set<ResourcePackageDetails> installedSoftware = new HashSet<ResourcePackageDetails>(); try { String uninstallList = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall"; RegistryKey key = RegistryKey.LocalMachine; RegistryKey uninstall = key.openSubKey(uninstallList); String[] packages = uninstall.getSubKeyNames(); for (String packageName : packages) { RegistryKey packageKey = uninstall.openSubKey(packageName); String installDateString = getStringValue(packageKey, "InstallDate"); String displayName = getStringValue(packageKey, "DisplayName"); String version = getStringValue(packageKey, "DisplayVersion"); if (displayName != null && installDateString != null && version != null) { if (version.length() == 0) { version = "1"; } try { ResourcePackageDetails details = new ResourcePackageDetails( new PackageDetailsKey(displayName, version, type.getName(), "noarch")); details.setFileCreatedDate(getDate(installDateString)); details.setInstallationTimestamp(getDate(installDateString)); details.setFileSize((long) packageKey.getIntValue("EstimatedSize", 0)); details.setDeploymentTimeConfiguration(getConfigurations(packageKey)); installedSoftware.add(details); } catch (IllegalArgumentException e) { if (log.isDebugEnabled()) { log.debug("Skipping windows package discovery for illegal entry [name=" + displayName + ",version=" + version + ",installDate=" + installDateString + "]", e); } } } } } catch (Win32Exception e) { log.warn("Failed in discovery of installed Windows software.", e); } return installedSoftware; } private Configuration getConfigurations(RegistryKey packageKey) { Configuration config = new Configuration(); String[] properties = { "Publisher", "Comments", "Contact", "HelpLink", "HelpTelephone", "InstallLocation", "InstallSource" }; for (String key : properties) { config.put(new PropertySimple(key, getStringValue(packageKey, key))); } config.put(new PropertySimple("EstimatedSize", packageKey.getIntValue("EstimatedSize", 0))); return config; } private static Long getDate(String dateString) { SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd"); Date date = null; try { date = sdf.parse(dateString); } catch (ParseException e) { DateFormat df = DateFormat.getDateTimeInstance(); try { date = df.parse(dateString); } catch (ParseException e1) { /* Poorly formatted dates are ignored */ } } return (date == null ? null : date.getTime()); } /** * String values are returned with their null terminator in the string... clear them out */ private static String getStringValue(RegistryKey key, String name) { String value = key.getStringValue(name, null); if (value != null) { value = value.trim(); } return value; } }