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Diffstat (limited to 'bundles/org.eclipse.equinox.util/src/org/eclipse/equinox/internal/util/security/PrivilegedRunner.java')
| -rw-r--r-- | bundles/org.eclipse.equinox.util/src/org/eclipse/equinox/internal/util/security/PrivilegedRunner.java | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/bundles/org.eclipse.equinox.util/src/org/eclipse/equinox/internal/util/security/PrivilegedRunner.java b/bundles/org.eclipse.equinox.util/src/org/eclipse/equinox/internal/util/security/PrivilegedRunner.java deleted file mode 100644 index 30d998db7..000000000 --- a/bundles/org.eclipse.equinox.util/src/org/eclipse/equinox/internal/util/security/PrivilegedRunner.java +++ /dev/null @@ -1,173 +0,0 @@ -/******************************************************************************* - * Copyright (c) 1997-2007 by ProSyst Software GmbH - * http://www.prosyst.com - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * ProSyst Software GmbH - initial API and implementation - *******************************************************************************/ -package org.eclipse.equinox.internal.util.security; - -import java.security.*; -import org.eclipse.equinox.internal.util.pool.ObjectCreator; -import org.eclipse.equinox.internal.util.pool.ObjectPool; - -/** - * A simple wrapper for executing privileged actions. - * - * @author Valentin Valchev - * @author Pavlin Dobrev - * @version 1.0 - */ - -public final class PrivilegedRunner implements ObjectCreator { - - private static ObjectPool POOL; - - static { - try { - POOL = new ObjectPool(new PrivilegedRunner(), 5, 10); - } catch (Exception e) { - e.printStackTrace(); - } - } - - /* prevent instantiations */ - private PrivilegedRunner() { - } - - /** - * Same as the longer doPrivileged method, but fills in the first parameter - * only. All other parameters are set to <code>null</code>. - * - * @param context - * the access context - * @param dispatcher - * the dispatcher which should be called - * @param type - * the type of the action - used in the dispatcher - * @param arg1 - * a parameter received by the dispatcher - * @see #doPrivileged(Object, PrivilegedDispatcher, int, Object) - * @return the object returned from the execution - * @throws Exception - * if the dispatcher fails - */ - public static final Object doPrivileged(Object context, PrivilegedDispatcher dispatcher, int type, Object arg1) throws Exception { - return doPrivileged(context, dispatcher, type, arg1, null, null, null); - } - - /** - * Performs a privileged action. The method calls the dispatcher inside the - * privileged call passing it the same parameters that were passed to this - * method. - * - * @param context - * the access context - * @param dispatcher - * the dispatcher which should be called - * @param type - * the type of the action - used in the dispatcher - * @param arg1 - * a parameter received by the dispatcher - * @param arg2 - * a parameter received by the dispatcher - * @param arg3 - * a parameter received by the dispatcher - * @param arg4 - * a parameter received by the dispatcher - * @return the object returned from the execution - * @throws Exception - * if the dispatcher fails - */ - public static final Object doPrivileged(Object context, PrivilegedDispatcher dispatcher, int type, Object arg1, Object arg2, Object arg3, Object arg4) throws Exception { - /* init runner */ - PA runner = (PA) POOL.getObject(); - runner.dispatcher = dispatcher; - runner.type = type; - runner.arg1 = arg1; - runner.arg2 = arg2; - runner.arg3 = arg3; - runner.arg4 = arg4; - - try { - if (System.getSecurityManager() != null) { - /* - * if security manager is set - then privileged execution is - * started - */ - return (context != null) - // - ? AccessController.doPrivileged(runner, (AccessControlContext) context) - : AccessController.doPrivileged(runner); - } - /* if no security manager is set - simply run the action */ - return runner.run(); - } catch (PrivilegedActionException e) { - throw e.getException(); - } finally { - runner.recycle(); - POOL.releaseObject(runner); - } - } - - /** - * @see org.eclipse.equinox.internal.util.pool.ObjectCreator#getInstance() - */ - public Object getInstance() throws Exception { - return new PA(); - } - - /** - * This dispatcher is the handler that is called within the privileged call. - * It should dispatch and perform the requested actions depending on the - * action type and using the given job parameters. - * - * @author Valentin Valchev - * @version $Revision: 1.2 $ - */ - public static interface PrivilegedDispatcher { - - /** - * @param type - * the type of the action - * @param arg1 - * parameter 1 - depends on the action type - * @param arg2 - * parameter 2 - depends on the action type - * @param arg3 - * parameter 3 - depends on the action type - * @param arg4 - * parameter 4 - depends on the action type - * @return an object which should be returned from the - * PrivilegedAction.run() method - * @throws Exception - * on error - */ - Object dispatchPrivileged(int type, Object arg1, Object arg2, Object arg3, Object arg4) throws Exception; - } - - static class PA implements PrivilegedExceptionAction { - - int type; - Object arg1, arg2, arg3, arg4; - PrivilegedDispatcher dispatcher; - - void recycle() { - dispatcher = null; - type = -1; - arg1 = arg2 = arg3 = arg4 = null; - } - - /** - * @see java.security.PrivilegedExceptionAction#run() - */ - public Object run() throws Exception { - return dispatcher.dispatchPrivileged(type, arg1, arg2, arg3, arg4); - } - } - -} |