mirror of https://github.com/OpenIdentityPlatform/OpenDJ.git

matthew_swift
25.05.2009 bdb54bc45ce05fcb01e106a8e9b52db188579efd
opends/src/server/org/opends/server/protocols/ldap/LDAPClientConnection.java
@@ -28,17 +28,21 @@
import static org.opends.messages.CoreMessages.ERR_ENQUEUE_BIND_IN_PROGRESS;
import static org.opends.messages.ProtocolMessages.*;
import static org.opends.server.loggers.AccessLogger.*;
import static org.opends.server.loggers.ErrorLogger.*;
import static org.opends.server.loggers.debug.DebugLogger.*;
import static org.opends.server.loggers.AccessLogger.logDisconnect;
import static org.opends.server.loggers.ErrorLogger.logError;
import static org.opends.server.loggers.debug.DebugLogger.debugEnabled;
import static org.opends.server.loggers.debug.DebugLogger.getTracer;
import static org.opends.server.protocols.ldap.LDAPConstants.*;
import static org.opends.server.types.OperationType.*;
import static org.opends.server.util.StaticUtils.*;
import static org.opends.server.util.ServerConstants.OID_START_TLS_REQUEST;
import static org.opends.server.util.StaticUtils.getExceptionMessage;
import static org.opends.server.util.StaticUtils.stackTraceToSingleLineString;
import java.io.IOException;
import java.net.InetAddress;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.nio.ByteBuffer;
import java.nio.channels.*;
import java.security.cert.Certificate;
import java.util.Collection;
import java.util.Iterator;
@@ -49,23 +53,9 @@
import org.opends.messages.Message;
import org.opends.messages.MessageBuilder;
import static org.opends.messages.CoreMessages.ERR_ENQUEUE_BIND_IN_PROGRESS;
import org.opends.server.api.ClientConnection;
import org.opends.server.api.ConnectionHandler;
import org.opends.server.core.AbandonOperationBasis;
import org.opends.server.core.AddOperationBasis;
import org.opends.server.core.BindOperationBasis;
import org.opends.server.core.CompareOperationBasis;
import org.opends.server.core.DeleteOperationBasis;
import org.opends.server.core.DirectoryServer;
import org.opends.server.core.ExtendedOperationBasis;
import org.opends.server.core.ModifyDNOperationBasis;
import org.opends.server.core.ModifyOperationBasis;
import org.opends.server.core.PersistentSearch;
import org.opends.server.core.PluginConfigManager;
import org.opends.server.core.SearchOperation;
import org.opends.server.core.SearchOperationBasis;
import org.opends.server.core.UnbindOperationBasis;
import org.opends.server.core.*;
import org.opends.server.core.networkgroups.NetworkGroup;
import org.opends.server.extensions.ConnectionSecurityProvider;
import org.opends.server.extensions.RedirectingByteChannel;
@@ -78,7 +68,6 @@
import org.opends.server.protocols.asn1.ASN1Writer;
import org.opends.server.types.*;
import org.opends.server.util.TimeThread;
import static org.opends.server.util.ServerConstants.OID_START_TLS_REQUEST;
/**
@@ -148,6 +137,138 @@
    }
  }
  /**
   * Channel that writes the contents of the provided buffer to the client,
   * throwing an exception if the write is unsuccessful for too
   * long (e.g., if the client is unresponsive or there is a network
   * problem). If possible, it will attempt to use the selector returned
   * by the {@code ClientConnection.getWriteSelector} method, but it is
   * capable of working even if that method returns {@code null}. <BR>
   *
   * Note that the original position and limit values will not be
   * preserved, so if that is important to the caller, then it should
   * record them before calling this method and restore them after it
   * returns.
   */
  private class TimeoutWriteByteChannel implements ByteChannel
  {
    public int read(ByteBuffer byteBuffer) throws IOException
    {
      return clientChannel.read(byteBuffer);
    }
    public boolean isOpen()
    {
      return clientChannel.isOpen();
    }
    public void close() throws IOException
    {
      clientChannel.close();
    }
    public int write(ByteBuffer byteBuffer) throws IOException
    {
      int bytesToWrite = byteBuffer.remaining();
      clientChannel.write(byteBuffer);
      if(!byteBuffer.hasRemaining())
      {
        return bytesToWrite;
      }
      long startTime = System.currentTimeMillis();
      long waitTime = getMaxBlockedWriteTimeLimit();
      if (waitTime <= 0)
      {
        // We won't support an infinite time limit, so fall back to using
        // five minutes, which is a very long timeout given that we're
        // blocking a worker thread.
        waitTime = 300000L;
      }
      long stopTime = startTime + waitTime;
      Selector selector = getWriteSelector();
      if (selector == null)
      {
        // The client connection does not provide a selector, so we'll
        // fall back
        // to a more inefficient way that will work without a selector.
        while (byteBuffer.hasRemaining()
               && (System.currentTimeMillis() < stopTime))
        {
          if (clientChannel.write(byteBuffer) < 0)
          {
            // The client connection has been closed.
            throw new ClosedChannelException();
          }
        }
        if (byteBuffer.hasRemaining())
        {
          // If we've gotten here, then the write timed out.
          throw new ClosedChannelException();
        }
        return bytesToWrite;
      }
      // Register with the selector for handling write operations.
      SelectionKey key =
          clientChannel.register(selector, SelectionKey.OP_WRITE);
      try
      {
        selector.select(waitTime);
        while (byteBuffer.hasRemaining())
        {
          long currentTime = System.currentTimeMillis();
          if (currentTime >= stopTime)
          {
            // We've been blocked for too long.
            throw new ClosedChannelException();
          }
          else
          {
            waitTime = stopTime - currentTime;
          }
          Iterator<SelectionKey> iterator =
              selector.selectedKeys().iterator();
          while (iterator.hasNext())
          {
            SelectionKey k = iterator.next();
            if (k.isWritable())
            {
              int bytesWritten = clientChannel.write(byteBuffer);
              if (bytesWritten < 0)
              {
                // The client connection has been closed.
                throw new ClosedChannelException();
              }
              iterator.remove();
            }
          }
          if (byteBuffer.hasRemaining())
          {
            selector.select(waitTime);
          }
        }
        return bytesToWrite;
      }
      finally
      {
        if (key.isValid())
        {
          key.cancel();
          selector.selectNow();
        }
      }
    }
  }
  /**
   * The tracer object for the debug logger.
@@ -216,6 +337,9 @@
  // The socket channel with which this client connection is associated.
  private final SocketChannel clientChannel;
  // The byte channel used for blocking writes with time out.
  private final ByteChannel timeoutClientChannel;
  // The string representation of the address of the client.
  private final String clientAddress;
@@ -269,12 +393,11 @@
   *          The socket channel that may be used to communicate with
   *          the client.
   * @param  protocol String representing the protocol (LDAP or LDAP+SSL).
   * @throws DirectoryException If SSL initialisation fails.
   */
  public LDAPClientConnection(LDAPConnectionHandler connectionHandler,
      SocketChannel clientChannel, String protocol)
      SocketChannel clientChannel, String protocol) throws DirectoryException
  {
    super();
    this.connectionHandler = connectionHandler;
    if (connectionHandler.isAdminConnectionHandler())
    {
@@ -282,6 +405,7 @@
    }
    this.clientChannel = clientChannel;
    timeoutClientChannel = new TimeoutWriteByteChannel();
    opsInProgressLock = new Object();
    ldapVersion = 3;
    requestHandler = null;
@@ -313,13 +437,21 @@
    APPLICATION_BUFFER_SIZE = connectionHandler.getBufferSize();
    tlsChannel =
        RedirectingByteChannel.getRedirectingByteChannel(clientChannel);
        RedirectingByteChannel.getRedirectingByteChannel(
            timeoutClientChannel);
    saslChannel =
        RedirectingByteChannel.getRedirectingByteChannel(tlsChannel);
    this.asn1Reader =
        ASN1.getReader(saslChannel, APPLICATION_BUFFER_SIZE, connectionHandler
            .getMaxRequestSize());
    if (connectionHandler.useSSL())
    {
      enableSSL(connectionHandler.getTLSByteChannel(this,
          timeoutClientChannel));
    }
    connectionID = DirectoryServer.newConnectionAccepted(this);
    if (connectionID < 0)
    {
@@ -2349,7 +2481,7 @@
    try
    {
      TLSByteChannel tlsByteChannel =
          connectionHandler.getTLSByteChannel(this, clientChannel);
          connectionHandler.getTLSByteChannel(this, timeoutClientChannel);
      setTLSPendingProvider(tlsByteChannel);
    }
    catch (DirectoryException de)