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JIDE Common Layer (Professional Swing Components)
/*
* @(#)SecurityUtils.java
*
* Copyright 2002 - 2004 JIDE Software Inc. All rights reserved.
*/
package com.jidesoft.utils;
import javax.swing.plaf.FontUIResource;
import java.awt.*;
import java.io.IOException;
import java.security.AccessControlException;
import java.util.Hashtable;
import java.util.Locale;
import java.util.MissingResourceException;
/**
* A class that keeps all the security stuff so that an application can safely run in applet or webstart environment.
* Please refer to JIDE_Developer_Guide_for_Webstart_Applet.pdf in doc folder for more information.
*/
public class SecurityUtils {
public static FontUIResource createFontUIResource(String name, int style, int size) {
Font font = createFont(name, style, size);
if (font != null) {
return new FontUIResource(font);
}
else {
return null;
}
}
static class FontStruct {
String font;
int style;
}
public static final String BOLD = "Bold";
public static final String ITALIC = "Italic";
public static final String BOLD_ITALIC = "Bold Italic";
private static String createFontStrings(String font, int style) {
String fontString;
switch (style) {
case Font.BOLD:
fontString = font + " " + BOLD;
break;
case Font.ITALIC:
fontString = font + " " + ITALIC;
break;
case Font.BOLD | Font.ITALIC:
fontString = font + " " + BOLD_ITALIC;
break;
case Font.PLAIN:
default:
fontString = font;
break;
}
return fontString.replace(' ', '_');
}
private static FontStruct getFontStruct(String text) {
if (text == null || text.length() == 0) {
return null;
}
text = text.replace('_', ' ');
FontStruct fontStruct = new FontStruct();
if (text.endsWith(BOLD)) {
fontStruct.style = Font.BOLD;
fontStruct.font = text.substring(0, text.length() - BOLD.length());
}
else if (text.endsWith(ITALIC)) {
fontStruct.style = Font.ITALIC;
fontStruct.font = text.substring(0, text.length() - ITALIC.length());
}
else if (text.endsWith(BOLD)) {
fontStruct.style = Font.BOLD | Font.ITALIC;
fontStruct.font = text.substring(0, text.length() - BOLD_ITALIC.length());
}
else {
fontStruct.style = Font.PLAIN;
fontStruct.font = text;
}
return fontStruct;
}
/**
* Creates font. If there is no permission to access font file, it will try to create the font
* directly from font file that is bundled as part of jar.
*
* @param name
* @param style
* @param size
* @return the font.
*/
public static Font createFont(String name, int style, int size) {
try {
// System.out.println("new Font");
return new Font(name, style, size);
}
catch (AccessControlException e) {
// System.out.println("new Font failed " + createFontStrings(name, style));
ClassLoader cl = SecurityUtils.class.getClassLoader();
try {
String value = null;
try {
value = FontFilesResource.getResourceBundle(Locale.getDefault()).getString(createFontStrings(name, style));
}
catch (MissingResourceException me1) {
try {
value = FontFilesResource.getResourceBundle(Locale.getDefault()).getString(name);
}
catch (MissingResourceException me2) {
}
}
if (value == null) {
return null;
}
else {
// System.out.print("createFont " + value);
Font font = Font.createFont(Font.TRUETYPE_FONT, cl.getResourceAsStream(value));
// System.out.println("successful " + font);
if (font != null) {
return font.deriveFont(style, size);
}
}
}
catch (FontFormatException e1) {
e1.printStackTrace();
throw e;
}
catch (IOException e1) {
e1.printStackTrace();
throw e;
}
}
return null;
}
private static Hashtable _safeProperties = null;
private static Hashtable getSafeProperties() {
if (_safeProperties == null) {
_safeProperties = new Hashtable(13);
_safeProperties.put("java.version", "");
_safeProperties.put("java.vendor", "");
_safeProperties.put("java.vendor.url", "");
_safeProperties.put("java.class.version", "");
_safeProperties.put("os.name", "");
_safeProperties.put("os.version", "");
_safeProperties.put("os.arch", "");
_safeProperties.put("file.separator", "");
_safeProperties.put("path.separator", "");
_safeProperties.put("line.separator", "");
_safeProperties.put("java.specification.version", "");
_safeProperties.put("java.specification.vendor", "");
_safeProperties.put("java.specification.name", "");
_safeProperties.put("java.vm.specification.vendor", "");
_safeProperties.put("java.vm.specification.name", "");
_safeProperties.put("java.vm.version", "");
_safeProperties.put("java.vm.vendor", "");
_safeProperties.put("java.vm.name", "");
}
return _safeProperties;
}
/**
* Gets the system property.
*
* @param key
* @param defaultValue
* @return the system property.
*/
public static String getProperty(String key, String defaultValue) {
try {
return System.getProperty(key, defaultValue);
}
catch (AccessControlException e) {
return defaultValue;
}
}
private static boolean _AWTEventListenerDisabled = false;
/**
* Checks if AWTEventListener is disabled. This flag can be set by user. If false, JIDE code will read the value and
* not use AWTEventListener. The reason we need this flag is because AWTEventListener needs a special security permission.
* If applet, it will throw security if the user policy doesn't have the correct permission.
*
* @return true if AWTEventListener is disabled.
*/
public static boolean isAWTEventListenerDisabled() {
return _AWTEventListenerDisabled;
}
/**
* Enables or disables the usage of AWTEventListener. If you wantto change it, you should change the value at
* the beginning of your main method.
*
* @param AWTEventListenerDisabled
*/
public static void setAWTEventListenerDisabled(boolean AWTEventListenerDisabled) {
_AWTEventListenerDisabled = AWTEventListenerDisabled;
}
}
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