/*
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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 java.net.InetAddress;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.regex.Pattern;
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/**
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* This class represents a single ACI's IP bind rule expression. It is possible
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* for that expression to contain several IP addresses to evaluate, so the
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* class contains a list of classes that can evaluate a remote clients IP
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* address for each IP address parsed from the bind rule.
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*/
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public class IP implements KeywordBindRule {
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/**
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* Regular expression used to do a quick check on the characters in a
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* bind rule address. These are all of the valid characters that may
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* appear in an bind rule address part.
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*/
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private static final Pattern ipRegEx =
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Pattern.compile("((?i)[\\.{1}[a-f]\\d:\\+{1}\\*/{1}\\t\\[{1}\\]{1}]+(?-i))");
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/** List of the pattern classes, one for each address decoded from the bind rule. */
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private final List<PatternIP> patternIPList;
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/** The type of the bind rule (!= or =). */
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private final EnumBindRuleType type;
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/**
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* Create a class representing the IP bind rule expressions for this ACI.
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* @param patternIPList A list of PatternIP objects representing the IP
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* bind rule expressions decoded from ACI.
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* @param type An enumeration representing the expression type.
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*/
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private IP(List<PatternIP> patternIPList, EnumBindRuleType type) {
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this.patternIPList=patternIPList;
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this.type=type;
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}
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/**
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* Decodes the provided IP bind rule expression string and returns an
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* IP class the can be used to evaluate remote clients IP addresses.
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*
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* @param expr The expression string from the ACI IP bind rule.
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* @param type An enumeration representing the expression type.
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* @return A class that can be used to evaluate remote clients IP
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* addresses.
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* @throws AciException If there is a parsing error.
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*/
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public static KeywordBindRule decode(String expr, EnumBindRuleType type)
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throws AciException {
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//Split on the ','.
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String[] ipStrs=expr.split("\\,", -1);
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List<PatternIP> patternIPList= new LinkedList<>();
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for (String ipStr : ipStrs) {
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if (!ipRegEx.matcher(ipStr).matches()) {
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throw new AciException(WARN_ACI_SYNTAX_INVALID_IP_EXPRESSION.get(expr));
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}
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patternIPList.add(PatternIP.decode(ipStr));
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}
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return new IP(patternIPList, type);
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}
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/**
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* Perform an evaluation using the provided evaluation context's remote
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* IP address information.
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*
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* @param evalCtx An evaluation context containing the remote clients
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* IP address information.
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*
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* @return An enumeration representing if the address matched.
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*/
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@Override
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public EnumEvalResult evaluate(AciEvalContext evalCtx) {
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return evaluate(evalCtx.getRemoteAddress());
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}
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/**
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* Perform an evaluation using the InetAddress.
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*
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* @param addr The InetAddress to evaluate against PatternIP classes.
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* @return An enumeration representing if the address matched one
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* of the patterns.
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*/
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EnumEvalResult evaluate(InetAddress addr) {
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EnumEvalResult matched=EnumEvalResult.FALSE;
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Iterator<PatternIP> it=patternIPList.iterator();
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for(; it.hasNext() && matched != EnumEvalResult.TRUE &&
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matched != EnumEvalResult.ERR;) {
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PatternIP patternIP=it.next();
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matched=patternIP.evaluate(addr);
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}
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return matched.getRet(type, false);
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}
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@Override
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public String toString() {
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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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buffer.append(super.toString());
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}
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}
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