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/*
* $Id: JDKPathPanel.java 2163 2008-05-18 13:48:36Z jponge $
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 2004 Klaus Bartz
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.izforge.izpack.panels;
import com.coi.tools.os.win.MSWinConstants;
import com.coi.tools.os.win.NativeLibException;
import com.izforge.izpack.installer.InstallData;
import com.izforge.izpack.installer.InstallerFrame;
import com.izforge.izpack.util.AbstractUIHandler;
import com.izforge.izpack.util.FileExecutor;
import com.izforge.izpack.util.OsVersion;
import com.izforge.izpack.util.os.RegistryDefaultHandler;
import com.izforge.izpack.util.os.RegistryHandler;
import java.io.File;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
/**
* Panel which asks for the JDK path.
*
* @author Klaus Bartz
*/
public class JDKPathPanel extends PathInputPanel
{
private static final long serialVersionUID = 3257006553327810104L;
private static final String[] testFiles = new String[]{"lib" + File.separator + "tools.jar"};
private static final String JDK_ROOT_KEY = "Software\\JavaSoft\\Java Development Kit";
private static final String JDK_VALUE_NAME = "JavaHome";
private static final String OSX_JDK_HOME = "/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home/";
private static final int OK = 0;
private static final int BAD_VERSION = 1;
private static final int BAD_REAL_PATH = 2;
private static final int BAD_REG_PATH = 3;
private String detectedVersion;
private String minVersion = null;
private String maxVersion = null;
private String variableName;
private Set badRegEntries = null;
/**
* The constructor.
*
* @param parent The parent window.
* @param idata The installation data.
*/
public JDKPathPanel(InstallerFrame parent, InstallData idata)
{
super(parent, idata);
setMustExist(true);
if (!OsVersion.IS_OSX)
{
setExistFiles(JDKPathPanel.testFiles);
}
setMinVersion(idata.getVariable("JDKPathPanel.minVersion"));
setMaxVersion(idata.getVariable("JDKPathPanel.maxVersion"));
setVariableName("JDKPath");
}
/**
* Indicates wether the panel has been validated or not.
*
* @return Wether the panel has been validated or not.
*/
public boolean isValidated()
{
boolean retval = false;
if (super.isValidated())
{
switch (verifyVersionEx())
{
case OK:
idata.setVariable(getVariableName(), pathSelectionPanel.getPath());
retval = true;
break;
case BAD_REG_PATH:
if (askQuestion(parent.langpack.getString("installer.warning"), parent.langpack.getString("JDKPathPanel.nonValidPathInReg"),
AbstractUIHandler.CHOICES_YES_NO, AbstractUIHandler.ANSWER_NO) == AbstractUIHandler.ANSWER_YES)
{
idata.setVariable(getVariableName(), pathSelectionPanel.getPath());
retval = true;
}
break;
case BAD_REAL_PATH:
break;
case BAD_VERSION:
String min = getMinVersion();
String max = getMaxVersion();
StringBuffer message = new StringBuffer();
message.append(parent.langpack.getString("JDKPathPanel.badVersion1")).append(
getDetectedVersion()).append(
parent.langpack.getString("JDKPathPanel.badVersion2"));
if (min != null && max != null)
{
message.append(min).append(" - ").append(max);
}
else if (min != null)
{
message.append(" >= ").append(min);
}
else if (max != null)
{
message.append(" <= ").append(max);
}
message.append(parent.langpack.getString("JDKPathPanel.badVersion3"));
if (askQuestion(parent.langpack.getString("installer.warning"), message.toString(),
AbstractUIHandler.CHOICES_YES_NO, AbstractUIHandler.ANSWER_NO) == AbstractUIHandler.ANSWER_YES)
{
idata.setVariable(getVariableName(), pathSelectionPanel.getPath());
retval = true;
}
break;
default:
throw new RuntimeException("Internal error: unknown result of version verification.");
}
}
return (retval);
}
/**
* Called when the panel becomes active.
*/
public void panelActivate()
{
// Resolve the default for chosenPath
super.panelActivate();
String chosenPath;
// The variable will be exist if we enter this panel
// second time. We would maintain the previos
// selected path.
if (idata.getVariable(getVariableName()) != null)
{
chosenPath = idata.getVariable(getVariableName());
}
else
{
if (OsVersion.IS_OSX)
{
chosenPath = OSX_JDK_HOME;
}
else
{
// Try the JAVA_HOME as child dir of the jdk path
chosenPath = (new File(idata.getVariable("JAVA_HOME"))).getParent();
}
}
// Set the path for method pathIsValid ...
pathSelectionPanel.setPath(chosenPath);
if (!pathIsValid() || !verifyVersion())
{
chosenPath = resolveInRegistry();
if (!pathIsValid() || !verifyVersion())
{
chosenPath = "";
}
}
// Set the default to the path selection panel.
pathSelectionPanel.setPath(chosenPath);
String var = idata.getVariable("JDKPathPanel.skipIfValid");
// Should we skip this panel?
if (chosenPath.length() > 0 && var != null && "yes".equalsIgnoreCase(var))
{
idata.setVariable(getVariableName(), chosenPath);
parent.skipPanel();
}
}
/**
* Returns the path to the needed JDK if found in the registry. If there are more than one JDKs
* registered, that one with the highest allowd version will be returned. Works only on windows.
* On Unix an empty string returns.
*
* @return the path to the needed JDK if found in the windows registry
*/
private String resolveInRegistry()
{
String retval = "";
int oldVal = 0;
RegistryHandler rh = null;
badRegEntries = new HashSet();
try
{
// Get the default registry handler.
rh = RegistryDefaultHandler.getInstance();
if (rh == null)
// We are on a os which has no registry or the
// needed dll was not bound to this installation. In
// both cases we forget the try to get the JDK path from registry.
{
return (retval);
}
rh.verify(idata);
oldVal = rh.getRoot(); // Only for security...
rh.setRoot(MSWinConstants.HKEY_LOCAL_MACHINE);
String[] keys = rh.getSubkeys(JDK_ROOT_KEY);
if (keys == null || keys.length == 0)
{
return (retval);
}
Arrays.sort(keys);
int i = keys.length - 1;
String min = getMinVersion();
String max = getMaxVersion();
// We search for the highest allowd version, therefore retrograde
while (i > 0)
{
if (compareVersions(keys[i], max, false, 4, 4, "__NO_NOT_IDENTIFIER_"))
{ // First allowd version found, now we have to test that the min value
// also allows this version.
if (compareVersions(keys[i], min, true, 4, 4, "__NO_NOT_IDENTIFIER_"))
{
String cv = JDK_ROOT_KEY + "\\" + keys[i];
String path = rh.getValue(cv, JDK_VALUE_NAME).getStringData();
// Use it only if the path is valid.
// Set the path for method pathIsValid ...
pathSelectionPanel.setPath(path);
if (!pathIsValid())
{
badRegEntries.add(keys[i]);
}
else if ("".equals(retval))
{
retval = path;
}
pathSelectionPanel.setPath(retval);
}
}
i--;
}
}
catch (Exception e)
{ // Will only be happen if registry handler is good, but an
// exception at performing was thrown. This is an error...
e.printStackTrace();
}
finally
{
if (rh != null && oldVal != 0)
{
try
{
rh.setRoot(MSWinConstants.HKEY_LOCAL_MACHINE);
}
catch (NativeLibException e)
{
e.printStackTrace();
}
}
}
return (retval);
}
private int verifyVersionEx()
{
String min = getMinVersion();
String max = getMaxVersion();
int retval = OK;
// No min and max, version always ok.
if (min == null && max == null)
{
return (OK);
}
if (!pathIsValid())
{
return (BAD_REAL_PATH);
}
// No get the version ...
// We cannot look to the version of this vm because we should
// test the given JDK VM.
String[] params = {
pathSelectionPanel.getPath() + File.separator + "bin" + File.separator + "java",
"-version"};
String[] output = new String[2];
FileExecutor fe = new FileExecutor();
fe.executeCommand(params, output);
// "My" VM writes the version on stderr :-(
String vs = (output[0].length() > 0) ? output[0] : output[1];
if (min != null)
{
if (!compareVersions(vs, min, true, 4, 4, "__NO_NOT_IDENTIFIER_"))
{
retval = BAD_VERSION;
}
}
if (max != null)
{
if (!compareVersions(vs, max, false, 4, 4, "__NO_NOT_IDENTIFIER_"))
{
retval = BAD_VERSION;
}
}
if (retval == OK && badRegEntries != null && badRegEntries.size() > 0)
{ // Test for bad registry entry.
if (badRegEntries.contains(getDetectedVersion()))
{
retval = BAD_REG_PATH;
}
}
return (retval);
}
private boolean verifyVersion()
{
return (verifyVersionEx() <= 0);
}
private boolean compareVersions(String in, String template, boolean isMin,
int assumedPlace, int halfRange, String useNotIdentifier)
{
StringTokenizer st = new StringTokenizer(in, " \t\n\r\f\"");
int i;
int currentRange = 0;
String[] interestedEntries = new String[halfRange + halfRange];
for (i = 0; i < assumedPlace - halfRange; ++i)
{
if (st.hasMoreTokens())
{
st.nextToken(); // Forget this entries.
}
}
for (i = 0; i < halfRange + halfRange; ++i)
{ // Put the interesting Strings into an intermediaer array.
if (st.hasMoreTokens())
{
interestedEntries[i] = st.nextToken();
currentRange++;
}
}
for (i = 0; i < currentRange; ++i)
{
if (useNotIdentifier != null && interestedEntries[i].indexOf(useNotIdentifier) > -1)
{
continue;
}
if (Character.getType(interestedEntries[i].charAt(0)) != Character.DECIMAL_DIGIT_NUMBER)
{
continue;
}
break;
}
if (i == currentRange)
{
detectedVersion = "";
return (false);
}
detectedVersion = interestedEntries[i];
StringTokenizer current = new StringTokenizer(interestedEntries[i], "._-");
StringTokenizer needed = new StringTokenizer(template, "._-");
while (needed.hasMoreTokens())
{
// Current can have no more tokens if needed has more
// and if a privious token was not accepted as good version.
// e.g. 1.4.2_02 needed, 1.4.2 current. The false return
// will be right here. Only if e.g. needed is 1.4.2_00 the
// return value will be false, but zero should not b e used
// at the last version part.
if (!current.hasMoreTokens())
{
return (false);
}
String cur = current.nextToken();
String nee = needed.nextToken();
int curVal = 0;
int neededVal = 0;
try
{
curVal = Integer.parseInt(cur);
neededVal = Integer.parseInt(nee);
}
catch (NumberFormatException nfe)
{ // A number format exception will be raised if
// there is a non numeric part in the version,
// e.g. 1.5.0_beta. The verification runs only into
// this deep area of version number (fourth sub place)
// if all other are equal to the given limit. Then
// it is right to return false because e.g.
// the minimal needed version will be 1.5.0.2.
return (false);
}
if (curVal < neededVal)
{
if (isMin)
{
return (false);
}
return (true);
}
if (Integer.parseInt(cur) > Integer.parseInt(nee))
{
if (isMin)
{
return (true);
}
return (false);
}
}
return (true);
}
/**
* Returns the current detected version.
*
* @return the current detected version
*/
public String getDetectedVersion()
{
return detectedVersion;
}
/**
* Returns the current used maximum version.
*
* @return the current used maximum version
*/
public String getMaxVersion()
{
return maxVersion;
}
/**
* Returns the current used minimum version.
*
* @return the current used minimum version
*/
public String getMinVersion()
{
return minVersion;
}
/**
* Sets the given value as current detected version.
*
* @param string version string to be used as detected version
*/
protected void setDetectedVersion(String string)
{
detectedVersion = string;
}
/**
* Sets the given value as maximum for version control.
*
* @param string version string to be used as maximum
*/
protected void setMaxVersion(String string)
{
if (string != null && string.length() > 0)
{
maxVersion = string;
}
else
{
maxVersion = "99.0.0";
}
}
/**
* Sets the given value as minimum for version control.
*
* @param string version string to be used as minimum
*/
protected void setMinVersion(String string)
{
if (string != null && string.length() > 0)
{
minVersion = string;
}
else
{
minVersion = "1.0.0";
}
}
/**
* Returns the name of the variable which should be used for the path.
*
* @return the name of the variable which should be used for the path
*/
public String getVariableName()
{
return variableName;
}
/**
* Sets the name for the variable which should be set with the path.
*
* @param string variable name to be used
*/
public void setVariableName(String string)
{
variableName = string;
}
/*
* (non-Javadoc)
*
* @see com.izforge.izpack.installer.IzPanel#getSummaryBody()
*/
public String getSummaryBody()
{
return (idata.getVariable(getVariableName()));
}
}
