/*
*
*
* 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.satsa.acl;
import com.sun.satsa.acl.AccessControlManager;
import com.sun.satsa.util.Utils;
import java.util.Vector;
/**
* This class represents JCRMI permission.
*/
public class JCRMIPermission {
/**
* Hash modifier value.
*/
private String hashModifier;
/**
* The list of class names.
*/
private String[] classes;
/**
* The list of method identifiers.
*/
private int[] methods;
/**
* Constructor.
* @param hashModifier hash modifier string.
* @param classList the list of classes.
* @param methodList the list of method names and signatures.
*/
public JCRMIPermission(String hashModifier, Vector classList,
Vector methodList) {
this.hashModifier = hashModifier;
classes = new String[classList.size()];
classList.copyInto(classes);
if (! methodList.isEmpty()) {
methods = new int[methodList.size()];
for (int i = 0; i < methodList.size(); i++) {
if (methodList.elementAt(i) instanceof String) {
methods[i] = getMethodId(hashModifier,
(String) methodList.elementAt(i));
} else {
methods[i] =
Utils.getInt((byte[])methodList.elementAt(i), 0);
}
}
}
}
/**
* Verify if this permission allows to invoke this method.
* @param className the name of class.
* @param method method name and signature.
* @return true if this permission allows to invoke this method.
*/
public boolean checkAccess(String className, String method) {
boolean found = false;
for (int i = 0; i < classes.length; i++) {
if (classes[i].equals(className)) {
found = true;
break;
}
}
if (! found) {
return false;
}
if (methods == null) {
return true;
}
int id = getMethodId(hashModifier, method);
for (int i = 0; i < methods.length; i++) {
if (id == methods[i])
return true;
}
return false;
}
/**
* Calculates method ID for given hash modifier and method name.
* @param hashModifier hash modifier value.
* @param method method name and signature.
* @return the identifier.
*/
private static int getMethodId(String hashModifier, String method) {
if (hashModifier != null) {
method = hashModifier + method;
}
byte data[] = Utils.stringToBytes(method);
data = AccessControlManager.getHash(data, 0, data.length);
return Utils.getInt(data, 0);
}
}
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