/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.authorization.dseecompat;
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import static org.opends.server.messages.AciMessages.*;
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import static org.opends.server.authorization.dseecompat.Aci.*;
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import static org.opends.server.messages.MessageHandler.getMessage;
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import org.opends.server.types.*;
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import org.opends.server.api.Group;
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import org.opends.server.core.GroupManager;
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import org.opends.server.core.DirectoryServer;
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import java.util.LinkedList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.LinkedHashSet;
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import java.util.regex.Pattern;
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import java.util.regex.Matcher;
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/**
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* A class representing a roledn bind rule keyword. This class is almost
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* an exact copy of groupDN, except for variable names and error messages.
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*/
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public class RoleDN implements KeywordBindRule {
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/*
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* List of DNs parsed from the ACI bind rule.
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*/
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LinkedList<DN> roleDNs=null;
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/*
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* The bind rule type of the RoleDN statement.
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*/
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private EnumBindRuleType type=null;
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/*
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* Group manager needed by the class.
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*/
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private static GroupManager groupManager =
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DirectoryServer.getGroupManager();
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/**
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* Constructor creating a class representing a roledn keyword of a bind
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* rule.
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* @param type An enumeration of the type of the bind rule.
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* @param roleDNs A list of the role dns parsed from the expression string.
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*/
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private RoleDN(EnumBindRuleType type, LinkedList<DN> roleDNs ) {
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this.roleDNs=roleDNs;
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this.type=type;
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}
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/**
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* Decodes an expression string representing an roledn bind rule.
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* @param expr A string representation of the bind rule.
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* @param type An enumeration of the type of the bind rule.
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* @return A keyword bind rule class that can be used to evaluate
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* this bind rule.
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* @throws AciException If the expression is invalid.
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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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if (!Pattern.matches(GroupDN.LDAP_URLS, expr)) {
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int msgID = MSGID_ACI_SYNTAX_INVALID_ROLEDN_EXPRESSION;
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String message = getMessage(msgID, expr);
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throw new AciException(msgID, message);
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}
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LinkedList<DN>roleDNs=new LinkedList<DN>();
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int ldapURLPos = 1;
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Pattern ldapURLPattern = Pattern.compile(LDAP_URL);
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Matcher ldapURLMatcher = ldapURLPattern.matcher(expr);
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while (ldapURLMatcher.find()) {
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String value = ldapURLMatcher.group(ldapURLPos).trim();
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try {
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DN dn=LDAPURL.decode(value, true).getBaseDN();
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roleDNs.add(dn);
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} catch (DirectoryException ex) {
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int msgID = MSGID_ACI_SYNTAX_INVALID_ROLEDN_URL;
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String message = getMessage(msgID, ex.getErrorMessage());
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throw new AciException(msgID, message);
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}
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}
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return new RoleDN(type, roleDNs);
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}
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/**
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* Performs the evaluation of a roledn bind rule based on the
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* evaluation context passed to it. The method uses an exact copy
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* evaluation method as the groupDN.evaluate(). The evaluation stops when
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* there are no more group DNs to evaluate, or if a group DN evaluates to
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* true if it contains the authorization DN.
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* @param evalCtx An evaluation context to use in the evaluation.
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* @return Enumeration evaluation result.
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*/
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public EnumEvalResult evaluate(AciEvalContext evalCtx) {
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EnumEvalResult matched = EnumEvalResult.FALSE;
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Iterator<DN> it=roleDNs.iterator();
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for(; it.hasNext() && matched != EnumEvalResult.TRUE;) {
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DN groupDN=it.next();
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Group group = groupManager.getGroupInstance(groupDN);
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if(evalCtx.isMemberOf(group))
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matched = EnumEvalResult.TRUE;
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}
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return matched.getRet(type, false);
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}
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/**
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* Performs an evaluation of a group that was specified in an attribute
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* type value of the specified entry and attribute type. Each
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* value of the attribute type is assumed to be a group DN and evaluation
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* stops when there are no more values or if the group DN evaluates to
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* true if it contains the client DN.
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* @param e The entry to use in the evaluation.
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* @param evalCtx The evaluation context to use in the evaluation.
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* @param attributeType The attribute type of the entry to use to get the
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* values for the groupd DNs.
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* @return Enumeration evaluation result.
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*/
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public static EnumEvalResult evaluate (Entry e, AciEvalContext evalCtx,
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AttributeType attributeType) {
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EnumEvalResult matched= EnumEvalResult.FALSE;
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List<Attribute> attrs = e.getAttribute(attributeType);
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LinkedHashSet<AttributeValue> vals = attrs.get(0).getValues();
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for(AttributeValue v : vals) {
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try {
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DN groupDN=DN.decode(v.getStringValue());
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Group group = groupManager.getGroupInstance(groupDN);
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if((group != null) && (evalCtx.isMemberOf(group))) {
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matched=EnumEvalResult.TRUE;
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break;
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}
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} catch (DirectoryException ex) {
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break;
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}
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}
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return matched;
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}
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}
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