/*
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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 2006-2008 Sun Microsystems, Inc.
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* Portions Copyright 2011-2016 ForgeRock AS.
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*/
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package org.opends.server.controls;
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import java.io.IOException;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.api.AuthenticationPolicyState;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.core.PasswordPolicyState;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.forgerock.opendj.io.ASN1;
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import org.forgerock.opendj.io.ASN1Reader;
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import org.forgerock.opendj.io.ASN1Writer;
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import org.opends.server.types.*;
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import org.forgerock.opendj.ldap.DN;
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import org.forgerock.opendj.ldap.ResultCode;
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import org.forgerock.opendj.ldap.ByteString;
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import static org.opends.messages.ProtocolMessages.*;
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import static org.opends.server.util.ServerConstants.*;
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import static org.opends.server.util.StaticUtils.*;
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/**
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* This class implements version 1 of the proxied authorization control as
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* defined in early versions of draft-weltman-ldapv3-proxy (this implementation
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* is based on the "-04" revision). It makes it possible for one user to
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* request that an operation be performed under the authorization of another.
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* The target user is specified as a DN in the control value, which
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* distinguishes it from later versions of the control (which used a different
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* OID) in which the target user was specified using an authorization ID.
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*/
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public class ProxiedAuthV1Control
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extends Control
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{
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/** ControlDecoder implementation to decode this control from a ByteString. */
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private static final class Decoder
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implements ControlDecoder<ProxiedAuthV1Control>
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{
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@Override
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public ProxiedAuthV1Control decode(boolean isCritical, ByteString value)
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throws DirectoryException
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{
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if (!isCritical)
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{
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LocalizableMessage message = ERR_PROXYAUTH1_CONTROL_NOT_CRITICAL.get();
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message);
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}
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if (value == null)
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{
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LocalizableMessage message = ERR_PROXYAUTH1_NO_CONTROL_VALUE.get();
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message);
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}
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ASN1Reader reader = ASN1.getReader(value);
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DN authorizationDN;
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try
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{
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reader.readStartSequence();
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authorizationDN = DN.valueOf(reader.readOctetString());
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reader.readEndSequence();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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LocalizableMessage message =
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ERR_PROXYAUTH1_CANNOT_DECODE_VALUE.get(getExceptionMessage(e));
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message, e);
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}
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return new ProxiedAuthV1Control(isCritical, authorizationDN);
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}
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@Override
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public String getOID()
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{
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return OID_PROXIED_AUTH_V1;
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}
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}
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/** The Control Decoder that can be used to decode this control. */
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public static final ControlDecoder<ProxiedAuthV1Control> DECODER =
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new Decoder();
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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/** The raw, unprocessed authorization DN from the control value. */
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private ByteString rawAuthorizationDN;
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/** The processed authorization DN from the control value. */
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private DN authorizationDN;
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/**
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* Creates a new instance of the proxied authorization v1 control with the
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* provided information.
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*
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* @param rawAuthorizationDN The raw, unprocessed authorization DN from the
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* control value. It must not be {@code null}.
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*/
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public ProxiedAuthV1Control(ByteString rawAuthorizationDN)
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{
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this(true, rawAuthorizationDN);
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}
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/**
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* Creates a new instance of the proxied authorization v1 control with the
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* provided information.
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*
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* @param authorizationDN The authorization DN from the control value. It
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* must not be {@code null}.
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*/
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public ProxiedAuthV1Control(DN authorizationDN)
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{
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this(true, authorizationDN);
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}
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/**
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* Creates a new instance of the proxied authorization v1 control with the
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* provided information.
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*
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* @param isCritical Indicates whether support for this control
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* should be considered a critical part of the
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* server processing.
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* @param rawAuthorizationDN The raw, unprocessed authorization DN from the
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* control value.
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*/
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public ProxiedAuthV1Control(boolean isCritical, ByteString rawAuthorizationDN)
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{
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super(OID_PROXIED_AUTH_V1, isCritical);
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this.rawAuthorizationDN = rawAuthorizationDN;
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authorizationDN = null;
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}
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/**
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* Creates a new instance of the proxied authorization v1 control with the
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* provided information.
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*
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* @param isCritical Indicates whether support for this control
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* should be considered a critical part of the
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* server processing.
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* @param authorizationDN The authorization DN from the control value.
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* It must not be {@code null}.
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*/
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public ProxiedAuthV1Control(boolean isCritical, DN authorizationDN)
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{
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super(OID_PROXIED_AUTH_V1, isCritical);
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this.authorizationDN = authorizationDN;
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rawAuthorizationDN = ByteString.valueOfUtf8(authorizationDN.toString());
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}
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/**
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* Writes this control's value to an ASN.1 writer. The value (if any) must be
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* written as an ASN1OctetString.
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*
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* @param writer The ASN.1 writer to use.
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* @throws IOException If a problem occurs while writing to the stream.
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*/
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@Override
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protected void writeValue(ASN1Writer writer) throws IOException {
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writer.writeStartSequence(ASN1.UNIVERSAL_OCTET_STRING_TYPE);
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writer.writeStartSequence();
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writer.writeOctetString(rawAuthorizationDN);
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writer.writeEndSequence();
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writer.writeEndSequence();
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}
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/**
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* Retrieves the raw, unprocessed authorization DN from the control value.
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*
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* @return The raw, unprocessed authorization DN from the control value.
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*/
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public ByteString getRawAuthorizationDN()
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{
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return rawAuthorizationDN;
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}
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/**
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* Retrieves the authorization DN from the control value.
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*
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* @return The authorization DN from the control value.
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*
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* @throws DirectoryException If a problem occurs while attempting to decode
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* the raw authorization DN as a DN.
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*/
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public DN getAuthorizationDN()
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throws DirectoryException
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{
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if (authorizationDN == null)
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{
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authorizationDN = DN.valueOf(rawAuthorizationDN);
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}
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return authorizationDN;
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}
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/**
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* Retrieves the authorization entry for this proxied authorization V1
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* control. It will also perform any necessary password policy checks to
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* ensure that the associated user account is suitable for use in performing
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* this processing.
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*
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* @return The entry for user specified as the authorization identity in this
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* proxied authorization V1 control, or {@code null} if the
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* authorization DN is the null DN.
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*
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* @throws DirectoryException If the target user does not exist or is not
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* available for use, or if a problem occurs
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* while making the determination.
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*/
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public Entry getAuthorizationEntry()
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throws DirectoryException
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{
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DN authzDN = getAuthorizationDN();
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if (authzDN.isRootDN())
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{
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return null;
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}
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// See if the authorization DN is one of the alternate bind DNs for one of
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// the root users and if so then map it accordingly.
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DN actualDN = DirectoryServer.getActualRootBindDN(authzDN);
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if (actualDN != null)
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{
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authzDN = actualDN;
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}
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Entry userEntry = DirectoryServer.getEntry(authzDN);
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if (userEntry == null)
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{
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// The requested user does not exist.
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LocalizableMessage message = ERR_PROXYAUTH1_NO_SUCH_USER.get(authzDN);
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throw new DirectoryException(ResultCode.AUTHORIZATION_DENIED, message);
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}
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// FIXME -- We should provide some mechanism for enabling debug
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// processing.
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AuthenticationPolicyState state = AuthenticationPolicyState.forUser(
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userEntry, false);
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if (state.isDisabled())
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{
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LocalizableMessage message = ERR_PROXYAUTH1_UNUSABLE_ACCOUNT.get(userEntry.getName());
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throw new DirectoryException(ResultCode.AUTHORIZATION_DENIED, message);
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}
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if (state.isPasswordPolicy())
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{
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PasswordPolicyState pwpState = (PasswordPolicyState) state;
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if (pwpState.isAccountExpired() || pwpState.isLocked() || pwpState.isPasswordExpired())
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{
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LocalizableMessage message = ERR_PROXYAUTH1_UNUSABLE_ACCOUNT.get(authzDN);
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throw new DirectoryException(ResultCode.AUTHORIZATION_DENIED, message);
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}
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}
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// If we've made it here, then the user is acceptable.
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return userEntry;
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}
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/**
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* Appends a string representation of this proxied auth v1 control to the
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* provided buffer.
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*
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* @param buffer The buffer to which the information should be appended.
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*/
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@Override
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public void toString(StringBuilder buffer)
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{
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buffer.append("ProxiedAuthorizationV1Control(authorizationDN=\"");
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buffer.append(rawAuthorizationDN);
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buffer.append("\")");
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}
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}
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