/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2008 Sun Microsystems, Inc.
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* Portions Copyright 2013-2016 ForgeRock AS.
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*/
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package org.opends.server.authorization.dseecompat;
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import static org.opends.messages.AccessControlMessages.*;
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import org.forgerock.i18n.LocalizableMessage;
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/** The class represents the ssf keyword in a bind rule.SSF stands for security strength factor. */
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public class SSF implements KeywordBindRule {
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/** Enumeration representing the bind rule operation type. */
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private EnumBindRuleType type;
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private static final int MAX_KEY_BITS=1024;
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private int ssf;
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private SSF(int ssf, EnumBindRuleType type) {
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this.ssf = ssf;
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this.type = type;
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}
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/**
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* Create SSF instance using the specified expression string and bind rule
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* type enumeration.
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* @param expr The expression string.
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* @param type The bind rule type enumeration.
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* @return A SSF instance.
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* @throws AciException If the SSF instance cannot be created.
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*/
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static SSF decode(String expr, EnumBindRuleType type) throws AciException {
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int valueAsInt = 0;
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try {
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valueAsInt = Integer.parseInt(expr);
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} catch (NumberFormatException nfe) {
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LocalizableMessage message =
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WARN_ACI_SYNTAX_INVALID_SSF_FORMAT.get(expr, nfe.getMessage());
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throw new AciException(message);
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}
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if (valueAsInt <= 0 || valueAsInt > MAX_KEY_BITS) {
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LocalizableMessage message = WARN_ACI_SYNTAX_INVALID_SSF_RANGE.get(expr);
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throw new AciException(message);
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}
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return new SSF(valueAsInt, type);
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}
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/**
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* Evaluate the specified evaluation context.
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* @param evalCtx The evaluation context to evaluate.
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*
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* @return An evaluation result enumeration containing the result of the
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* context evaluation.
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*/
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@Override
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public EnumEvalResult evaluate(AciEvalContext evalCtx) {
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int currentSSF = evalCtx.getCurrentSSF();
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EnumEvalResult matched = getMatched(currentSSF);
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return matched.getRet(type, false);
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}
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private EnumEvalResult getMatched(int currentSSF) {
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switch (type) {
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case EQUAL_BINDRULE_TYPE:
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case NOT_EQUAL_BINDRULE_TYPE:
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if (currentSSF == ssf) {
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return EnumEvalResult.TRUE;
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}
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break;
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case LESS_OR_EQUAL_BINDRULE_TYPE:
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if (currentSSF <= ssf) {
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return EnumEvalResult.TRUE;
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}
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break;
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case LESS_BINDRULE_TYPE:
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if (currentSSF < ssf) {
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return EnumEvalResult.TRUE;
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}
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break;
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case GREATER_OR_EQUAL_BINDRULE_TYPE:
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if (currentSSF >= ssf) {
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return EnumEvalResult.TRUE;
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}
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break;
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case GREATER_BINDRULE_TYPE:
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if (currentSSF > ssf) {
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return EnumEvalResult.TRUE;
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}
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}
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return EnumEvalResult.FALSE;
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}
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@Override
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public String toString()
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{
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final StringBuilder sb = new StringBuilder();
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toString(sb);
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return sb.toString();
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}
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@Override
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public final void toString(StringBuilder buffer)
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{
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buffer.append(super.toString());
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}
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}
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