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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 in the LICENSE file that
* accompanied this code).
*
* 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,
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*
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package com.sun.security.sasl.util;
import javax.security.sasl.Sasl;
import java.util.Map;
/**
* Static class that contains utilities for dealing with Java SASL
* security policy-related properties.
*
* @author Rosanna Lee
*/
final public class PolicyUtils {
// Can't create one of these
private PolicyUtils() {
}
public final static int NOPLAINTEXT = 0x0001;
public final static int NOACTIVE = 0x0002;
public final static int NODICTIONARY = 0x0004;
public final static int FORWARD_SECRECY = 0x0008;
public final static int NOANONYMOUS = 0x0010;
public final static int PASS_CREDENTIALS = 0x0200;
/**
* Determines whether a mechanism's characteristics, as defined in flags,
* fits the security policy properties found in props.
* @param flags The mechanism's security characteristics
* @param props The security policy properties to check
* @return true if passes; false if fails
*/
public static boolean checkPolicy(int flags, Map props) {
if (props == null) {
return true;
}
if ("true".equalsIgnoreCase((String)props.get(Sasl.POLICY_NOPLAINTEXT))
&& (flags&NOPLAINTEXT) == 0) {
return false;
}
if ("true".equalsIgnoreCase((String)props.get(Sasl.POLICY_NOACTIVE))
&& (flags&NOACTIVE) == 0) {
return false;
}
if ("true".equalsIgnoreCase((String)props.get(Sasl.POLICY_NODICTIONARY))
&& (flags&NODICTIONARY) == 0) {
return false;
}
if ("true".equalsIgnoreCase((String)props.get(Sasl.POLICY_NOANONYMOUS))
&& (flags&NOANONYMOUS) == 0) {
return false;
}
if ("true".equalsIgnoreCase((String)props.get(Sasl.POLICY_FORWARD_SECRECY))
&& (flags&FORWARD_SECRECY) == 0) {
return false;
}
if ("true".equalsIgnoreCase((String)props.get(Sasl.POLICY_PASS_CREDENTIALS))
&& (flags&PASS_CREDENTIALS) == 0) {
return false;
}
return true;
}
/**
* Given a list of mechanisms and their characteristics, select the
* subset that conforms to the policies defined in props.
* Useful for SaslXXXFactory.getMechanismNames(props) implementations.
*
*/
public static String[] filterMechs(String[] mechs, int[] policies,
Map props) {
if (props == null) {
return mechs.clone();
}
boolean[] passed = new boolean[mechs.length];
int count = 0;
for (int i = 0; i< mechs.length; i++) {
if (passed[i] = checkPolicy(policies[i], props)) {
++count;
}
}
String[] answer = new String[count];
for (int i = 0, j=0; i< mechs.length; i++) {
if (passed[i]) {
answer[j++] = mechs[i];
}
}
return answer;
}
}