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/*
* Copyright 2007-2017 UnboundID Corp.
* All Rights Reserved.
*/
/*
* Copyright (C) 2008-2017 UnboundID Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (GPLv2 only)
* or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
* as published by the Free Software Foundation.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
package com.unboundid.ldap.sdk;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.ldap.protocol.BindRequestProtocolOp;
import com.unboundid.ldap.protocol.LDAPMessage;
import com.unboundid.ldap.protocol.LDAPResponse;
import com.unboundid.util.Extensible;
import com.unboundid.util.InternalUseOnly;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import static com.unboundid.ldap.sdk.LDAPMessages.*;
import static com.unboundid.util.Debug.*;
import static com.unboundid.util.StaticUtils.*;
/**
* This class provides an API that should be used to represent an LDAPv3 SASL
* bind request. A SASL bind includes a SASL mechanism name and an optional set
* of credentials.
*
* See RFC 4422 for more
* information about the Simple Authentication and Security Layer.
*/
@Extensible()
@ThreadSafety(level=ThreadSafetyLevel.INTERFACE_NOT_THREADSAFE)
public abstract class SASLBindRequest
extends BindRequest
implements ResponseAcceptor
{
/**
* The BER type to use for the credentials element in a simple bind request
* protocol op.
*/
protected static final byte CRED_TYPE_SASL = (byte) 0xA3;
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = -5842126553864908312L;
// The message ID to use for LDAP messages used in bind processing.
private int messageID;
// The queue used to receive responses from the server.
private final LinkedBlockingQueue responseQueue;
/**
* Creates a new SASL bind request with the provided controls.
*
* @param controls The set of controls to include in this SASL bind request.
*/
protected SASLBindRequest(final Control[] controls)
{
super(controls);
messageID = -1;
responseQueue = new LinkedBlockingQueue();
}
/**
* {@inheritDoc}
*/
@Override()
public String getBindType()
{
return getSASLMechanismName();
}
/**
* Retrieves the name of the SASL mechanism used in this SASL bind request.
*
* @return The name of the SASL mechanism used in this SASL bind request.
*/
public abstract String getSASLMechanismName();
/**
* {@inheritDoc}
*/
@Override()
public int getLastMessageID()
{
return messageID;
}
/**
* Sends an LDAP message to the directory server and waits for the response.
*
* @param connection The connection to the directory server.
* @param bindDN The bind DN to use for the request. It should be
* {@code null} for most types of SASL bind requests.
* @param saslCredentials The SASL credentials to use for the bind request.
* It may be {@code null} if no credentials are
* required.
* @param controls The set of controls to include in the request. It
* may be {@code null} if no controls are required.
* @param timeoutMillis The maximum length of time in milliseconds to wait
* for a response, or zero if it should wait forever.
*
* @return The bind response message returned by the directory server.
*
* @throws LDAPException If a problem occurs while sending the request or
* reading the response, or if a timeout occurred
* while waiting for the response.
*/
protected final BindResult sendBindRequest(final LDAPConnection connection,
final String bindDN,
final ASN1OctetString saslCredentials,
final Control[] controls,
final long timeoutMillis)
throws LDAPException
{
if (messageID == -1)
{
messageID = connection.nextMessageID();
}
final BindRequestProtocolOp protocolOp =
new BindRequestProtocolOp(bindDN, getSASLMechanismName(),
saslCredentials);
final LDAPMessage requestMessage =
new LDAPMessage(messageID, protocolOp, controls);
return sendMessage(connection, requestMessage, timeoutMillis);
}
/**
* Sends an LDAP message to the directory server and waits for the response.
*
* @param connection The connection to the directory server.
* @param requestMessage The LDAP message to send to the directory server.
* @param timeoutMillis The maximum length of time in milliseconds to wait
* for a response, or zero if it should wait forever.
*
* @return The response message received from the server.
*
* @throws LDAPException If a problem occurs while sending the request or
* reading the response, or if a timeout occurred
* while waiting for the response.
*/
protected final BindResult sendMessage(final LDAPConnection connection,
final LDAPMessage requestMessage,
final long timeoutMillis)
throws LDAPException
{
if (connection.synchronousMode())
{
return sendMessageSync(connection, requestMessage, timeoutMillis);
}
final int msgID = requestMessage.getMessageID();
connection.registerResponseAcceptor(msgID, this);
try
{
final long requestTime = System.nanoTime();
connection.getConnectionStatistics().incrementNumBindRequests();
connection.sendMessage(requestMessage);
// Wait for and process the response.
final LDAPResponse response;
try
{
if (timeoutMillis > 0)
{
response = responseQueue.poll(timeoutMillis, TimeUnit.MILLISECONDS);
}
else
{
response = responseQueue.take();
}
}
catch (InterruptedException ie)
{
debugException(ie);
Thread.currentThread().interrupt();
throw new LDAPException(ResultCode.LOCAL_ERROR,
ERR_BIND_INTERRUPTED.get(connection.getHostPort()), ie);
}
return handleResponse(connection, response, requestTime);
}
finally
{
connection.deregisterResponseAcceptor(msgID);
}
}
/**
* Sends an LDAP message to the directory server and waits for the response.
* This should only be used when the connection is operating in synchronous
* mode.
*
* @param connection The connection to the directory server.
* @param requestMessage The LDAP message to send to the directory server.
* @param timeoutMillis The maximum length of time in milliseconds to wait
* for a response, or zero if it should wait forever.
*
* @return The response message received from the server.
*
* @throws LDAPException If a problem occurs while sending the request or
* reading the response, or if a timeout occurred
* while waiting for the response.
*/
private BindResult sendMessageSync(final LDAPConnection connection,
final LDAPMessage requestMessage,
final long timeoutMillis)
throws LDAPException
{
// Set the appropriate timeout on the socket.
try
{
connection.getConnectionInternals(true).getSocket().setSoTimeout(
(int) timeoutMillis);
}
catch (Exception e)
{
debugException(e);
}
final int msgID = requestMessage.getMessageID();
final long requestTime = System.nanoTime();
connection.getConnectionStatistics().incrementNumBindRequests();
connection.sendMessage(requestMessage);
while (true)
{
final LDAPResponse response = connection.readResponse(messageID);
if (response instanceof IntermediateResponse)
{
final IntermediateResponseListener listener =
getIntermediateResponseListener();
if (listener != null)
{
listener.intermediateResponseReturned(
(IntermediateResponse) response);
}
}
else
{
return handleResponse(connection, response, requestTime);
}
}
}
/**
* Performs the necessary processing for handling a response.
*
* @param connection The connection used to read the response.
* @param response The response to be processed.
* @param requestTime The time the request was sent to the server.
*
* @return The bind result.
*
* @throws LDAPException If a problem occurs.
*/
private BindResult handleResponse(final LDAPConnection connection,
final LDAPResponse response,
final long requestTime)
throws LDAPException
{
if (response == null)
{
final long waitTime = nanosToMillis(System.nanoTime() - requestTime);
throw new LDAPException(ResultCode.TIMEOUT,
ERR_SASL_BIND_CLIENT_TIMEOUT.get(waitTime, getSASLMechanismName(),
messageID, connection.getHostPort()));
}
if (response instanceof ConnectionClosedResponse)
{
final ConnectionClosedResponse ccr = (ConnectionClosedResponse) response;
final String message = ccr.getMessage();
if (message == null)
{
// The connection was closed while waiting for the response.
throw new LDAPException(ccr.getResultCode(),
ERR_CONN_CLOSED_WAITING_FOR_BIND_RESPONSE.get(
connection.getHostPort(), toString()));
}
else
{
// The connection was closed while waiting for the response.
throw new LDAPException(ccr.getResultCode(),
ERR_CONN_CLOSED_WAITING_FOR_BIND_RESPONSE_WITH_MESSAGE.get(
connection.getHostPort(), toString(), message));
}
}
connection.getConnectionStatistics().incrementNumBindResponses(
System.nanoTime() - requestTime);
return (BindResult) response;
}
/**
* {@inheritDoc}
*/
@InternalUseOnly()
public final void responseReceived(final LDAPResponse response)
throws LDAPException
{
try
{
responseQueue.put(response);
}
catch (Exception e)
{
debugException(e);
if (e instanceof InterruptedException)
{
Thread.currentThread().interrupt();
}
throw new LDAPException(ResultCode.LOCAL_ERROR,
ERR_EXCEPTION_HANDLING_RESPONSE.get(getExceptionMessage(e)), e);
}
}
/**
* {@inheritDoc}
*/
public void toCode(final List lineList, final String requestID,
final int indentSpaces, final boolean includeProcessing)
{
// Create the request variable.
final ArrayList constructorArgs =
new ArrayList(4);
constructorArgs.add(ToCodeArgHelper.createString(null, "Bind DN"));
constructorArgs.add(ToCodeArgHelper.createString(getSASLMechanismName(),
"SASL Mechanism Name"));
constructorArgs.add(ToCodeArgHelper.createByteArray(
"---redacted-SASL-credentials".getBytes(), true,
"SASL Credentials"));
final Control[] controls = getControls();
if (controls.length > 0)
{
constructorArgs.add(ToCodeArgHelper.createControlArray(controls,
"Bind Controls"));
}
ToCodeHelper.generateMethodCall(lineList, indentSpaces,
"GenericSASLBindRequest", requestID + "Request",
"new GenericSASLBindRequest", constructorArgs);
// Add lines for processing the request and obtaining the result.
if (includeProcessing)
{
// Generate a string with the appropriate indent.
final StringBuilder buffer = new StringBuilder();
for (int i=0; i < indentSpaces; i++)
{
buffer.append(' ');
}
final String indent = buffer.toString();
lineList.add("");
lineList.add(indent + '{');
lineList.add(indent + " BindResult " + requestID +
"Result = connection.bind(" + requestID + "Request);");
lineList.add(indent + " // The bind was processed successfully.");
lineList.add(indent + '}');
lineList.add(indent + "catch (SASLBindInProgressException e)");
lineList.add(indent + '{');
lineList.add(indent + " // The SASL bind requires multiple stages. " +
"Continue it here.");
lineList.add(indent + " // Do not attempt to use the connection for " +
"any other purpose until bind processing has completed.");
lineList.add(indent + '}');
lineList.add(indent + "catch (LDAPException e)");
lineList.add(indent + '{');
lineList.add(indent + " // The bind failed. Maybe the following will " +
"help explain why.");
lineList.add(indent + " // Note that the connection is now likely in " +
"an unauthenticated state.");
lineList.add(indent + " ResultCode resultCode = e.getResultCode();");
lineList.add(indent + " String message = e.getMessage();");
lineList.add(indent + " String matchedDN = e.getMatchedDN();");
lineList.add(indent + " String[] referralURLs = e.getReferralURLs();");
lineList.add(indent + " Control[] responseControls = " +
"e.getResponseControls();");
lineList.add(indent + '}');
}
}
}
