/*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, 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 version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.midp.jump;
import java.lang.reflect.Field;
import java.security.AccessController;
import java.security.PrivilegedAction;
import com.sun.midp.midlet.MIDletStateHandler;
import com.sun.midp.midlet.MIDletSuite;
import com.sun.midp.jump.installer.TrustedMIDletSuiteInfo;
/**
* Initialize the JUMP executive environment for using midp code.
*/
public class JumpInit {
public static void init() {
// First, load the midp natives.
try {
String n = System.getProperty("sun.midp.library.name", "midp");
// DEBUG: System.err.println("Loading DLL \"" + n + "\" ...");
System.loadLibrary(n);
} catch (UnsatisfiedLinkError err) {}
/**
* Path to MIDP working directory.
* Default is the property "sun.midp.home.path", the fallback is user.dir.
*/
String userdir = System.getProperty("user.dir", ".");
String home = System.getProperty("sun.midp.home.path", userdir);
String profile = System.getProperty("microedition.profiles");
if (profile == null)
System.setProperty("microedition.profiles", "MIDP-2.1");
if (!initMidpNativeStates(home)) {
throw new RuntimeException("MIDP native initialization failed");
}
/**
* Making the runtime believe that this is a trusted midlet suite.
* This is needed because in midp's code, security check is often done
* by checking the executing midlet suite's security token.
* See com.sun.midp.jump.installer.TrustedMIDletSuiteInfo for more
* information.
**/
final MIDletStateHandler handler = MIDletStateHandler.getMidletStateHandler();
MIDletSuite suite = handler.getMIDletSuite();
if (suite == null) {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
try {
Class clazz = MIDletStateHandler.class;
Field midletSuiteField = clazz.getDeclaredField("midletSuite");
midletSuiteField.setAccessible(true);
midletSuiteField.set(handler, new TrustedMIDletSuiteInfo());
} catch (Exception e) { e.printStackTrace(); }
return null;
}
});
}
}
/**
* Performs native subsystem initialization.
* @param home path to the MIDP working directory.
*/
static native boolean initMidpNativeStates(String home);
}
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