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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use
Java API for communicating with LDAP directory servers and performing
related tasks like reading and writing LDIF, encoding and decoding data
using base64 and ASN.1 BER, and performing secure communication. This
package contains the Standard Edition of the LDAP SDK, which is a
complete, general-purpose library for communicating with LDAPv3 directory
servers.
/*
* Copyright 2020-2022 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright 2020-2022 Ping Identity Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Copyright (C) 2020-2022 Ping Identity Corporation
*
* 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.unboundidds;
import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import com.unboundid.ldap.sdk.Entry;
import com.unboundid.ldap.sdk.LDAPConnectionOptions;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.ldif.LDIFException;
import com.unboundid.ldif.LDIFReader;
import com.unboundid.util.Debug;
import com.unboundid.util.NotMutable;
import com.unboundid.util.NotNull;
import com.unboundid.util.Nullable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import static com.unboundid.ldap.sdk.unboundidds.UnboundIDDSMessages.*;
/**
* This class provides a data structure that holds information about an LDAP
* connection handler defined in the configuration of a Ping Identity Directory
* Server instance. It also provides a utility method for reading a Directory
* Server configuration file to obtain information about the listener instances
* it contains, and it implements the {@code Comparable} interface for ranking
* connection handlers by relative preference for use.
*
*
* NOTE: This class, and other classes within the
* {@code com.unboundid.ldap.sdk.unboundidds} package structure, are only
* supported for use against Ping Identity, UnboundID, and
* Nokia/Alcatel-Lucent 8661 server products. These classes provide support
* for proprietary functionality or for external specifications that are not
* considered stable or mature enough to be guaranteed to work in an
* interoperable way with other types of LDAP servers.
*
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class LDAPConnectionHandlerConfiguration
implements Comparable,
Comparator,
Serializable
{
/**
* The name of the LDAP object class that will be used in LDAP connection
* handler configuration entries.
*/
@NotNull private static final String OC_LDAP_CONN_HANDLER =
"ds-cfg-ldap-connection-handler";
/**
* The name for the LDAP attribute that indicates whether the connection
* handler allows StartTLS.
*/
@NotNull private static final String ATTR_ALLOW_START_TLS =
"ds-cfg-allow-start-tls";
/**
* The name fo the LDAP attribute that indicates whether the connection
* handler is enabled.
*/
@NotNull private static final String ATTR_ENABLED = "ds-cfg-enabled";
/**
* The name for the LDAP attribute that specifies the set of addresses on
* which the connection handler will listen.
*/
@NotNull private static final String ATTR_LISTEN_ADDRESS =
"ds-cfg-listen-address";
/**
* The name for the LDAP attribute that specifies the port on which the
* connection handler will listen.
*/
@NotNull private static final String ATTR_LISTEN_PORT = "ds-cfg-listen-port";
/**
* The name for the LDAP attribute that specifies the name of the connection
* handler.
*/
@NotNull private static final String ATTR_NAME = "cn";
/**
* The name for the LDAP attribute that indicates whether the connection
* handler uses SSL.
*/
@NotNull private static final String ATTR_USE_SSL = "ds-cfg-use-ssl";
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 6824077978334156627L;
// Indicates whether the connection handler is enabled for use.
private final boolean isEnabled;
// Indicates whether the connection handler supports StartTLS for encrypting
// communication.
private final boolean supportsStartTLS;
// Indicates whether the connection handler uses SSL to encrypt communication.
private final boolean usesSSL;
// The port on which the connection handler accepts client connections.
private final int port;
// The set of addresses on which the connection handler accepts client
// connections.
@NotNull private final List listenAddresses;
// The name for the connection handler.
@NotNull private final String name;
/**
* Creates a new LDAP connection handler configuration object with the
* provided information.
*
* @param name The name for the connection handler.
* @param isEnabled Indicates whether the connection handler is
* enabled for use.
* @param listenAddresses The set of addresses on which the connection
* handler accepts client connections. It must not
* be {@code null} but may be empty.
* @param port The port on which the connection handler accepts
* client connections.
* @param usesSSL Indicates whether the connection handler uses
* SSL to encrypt communication.
* @param supportsStartTLS Indicates whether the connection handler supports
* StartTLS for encrypting communication.
*/
LDAPConnectionHandlerConfiguration(@NotNull final String name,
final boolean isEnabled, @NotNull final List listenAddresses,
final int port, final boolean usesSSL, final boolean supportsStartTLS)
{
this.name = name;
this.isEnabled = isEnabled;
this.listenAddresses = listenAddresses;
this.port = port;
this.usesSSL = usesSSL;
this.supportsStartTLS = supportsStartTLS;
}
/**
* Retrieves the name for the connection handler.
*
* @return The name for the connection handler.
*/
@NotNull()
public String getName()
{
return name;
}
/**
* Indicates whether the connection handler is enabled for use.
*
* @return {@code true} if the connection handler is enabled, or
* {@code false} if not.
*/
public boolean isEnabled()
{
return isEnabled;
}
/**
* Retrieves the set of addresses on which the connection handler accepts
* client connections, if available.
*
* @return The set of addresses on which the connection handler accepts
* client connections, or an empty set if the connection handler
* listens on all addresses on all interfaces.
*/
@NotNull()
public List getListenAddresses()
{
return listenAddresses;
}
/**
* Retrieves the port on which the connection handler accepts client
* connections.
*
* @return The port on which the connection handler accepts client
* connections.
*/
public int getPort()
{
return port;
}
/**
* Indicates whether the connection handler uses SSL to encrypt communication.
*
* @return {@code true} if the connection handler uses SSL to encrypt
* communication, or {@code false} if not.
*/
public boolean usesSSL()
{
return usesSSL;
}
/**
* Indicates whether the connection handler supports StartTLS for encrypting
* communication.
*
* @return {@code true} if the connection handler supports StartTLS for
* encrypting communication, or {@code false} if not.
*/
public boolean supportsStartTLS()
{
return supportsStartTLS;
}
/**
* Retrieves the LDAP connection handler configuration objects from the
* specified configuration file. The configuration objects will be ordered
* from most preferred to least preferred, using the logic described in the
* {@link #compareTo} method documentation.
*
* @param configFile The configuration file to examine. It must not be
* {@code null}, and it must exist.
* @param onlyEnabled Indicates whether to only include information about
* connection handlers that are enabled.
*
* @return A list of the LDAP connection handler configuration objects read
* from the specified configuration file, or an empty set if no LDAP
* connection handler configuration entries were found in the
* configuration.
*
* @throws LDAPException If a problem interferes with reading the
* connection handler configuration objects from the
* configuration file.
*/
@NotNull()
public static List readConfiguration(
@NotNull final File configFile, final boolean onlyEnabled)
throws LDAPException
{
try (LDIFReader ldifReader = new LDIFReader(configFile))
{
final List configs =
new ArrayList<>();
while (true)
{
final Entry entry;
try
{
entry = ldifReader.readEntry();
}
catch (final LDIFException e)
{
Debug.debugException(e);
if (e.mayContinueReading())
{
continue;
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_LDAP_HANDLER_CANNOT_READ_CONFIG.get(
configFile.getAbsolutePath(),
StaticUtils.getExceptionMessage(e)));
}
}
if (entry == null)
{
break;
}
if (! entry.hasObjectClass(OC_LDAP_CONN_HANDLER))
{
continue;
}
final String name = entry.getAttributeValue(ATTR_NAME);
if (name == null)
{
continue;
}
final boolean isEnabled =
entry.hasAttributeValue(ATTR_ENABLED, "true");
if ((! isEnabled) && onlyEnabled)
{
continue;
}
final Integer port = entry.getAttributeValueAsInteger(ATTR_LISTEN_PORT);
if ((port == null) || (port < 1) || (port > 65535))
{
continue;
}
final boolean usesSSL = entry.hasAttributeValue(ATTR_USE_SSL, "true");
final boolean supportsStartTLS;
if (usesSSL)
{
supportsStartTLS = false;
}
else
{
supportsStartTLS =
entry.hasAttributeValue(ATTR_ALLOW_START_TLS, "true");
}
final List listenAddresses;
final String[] addressArray =
entry.getAttributeValues(ATTR_LISTEN_ADDRESS);
if (addressArray == null)
{
listenAddresses = Collections.emptyList();
}
else
{
final Set s = new LinkedHashSet<>();
for (final String address : addressArray)
{
try
{
final InetAddress a = LDAPConnectionOptions.DEFAULT_NAME_RESOLVER.
getByName(address);
if (a.isAnyLocalAddress())
{
continue;
}
}
catch (final Exception e)
{
Debug.debugException(e);
}
s.add(address);
}
listenAddresses = Collections.unmodifiableList(new ArrayList<>(s));
}
configs.add(new LDAPConnectionHandlerConfiguration(name, isEnabled,
listenAddresses, port, usesSSL, supportsStartTLS));
}
if (configs.size() <= 1)
{
return Collections.unmodifiableList(configs);
}
final SortedSet configSet =
new TreeSet<>(configs.get(0));
configSet.addAll(configs);
return Collections.unmodifiableList(new ArrayList<>(configSet));
}
catch (final IOException e)
{
Debug.debugException(e);
throw new LDAPException(ResultCode.LOCAL_ERROR,
ERR_LDAP_HANDLER_CANNOT_READ_CONFIG.get(configFile.getAbsolutePath(),
StaticUtils.getExceptionMessage(e)));
}
}
/**
* Retrieves a hash code for the connection handler configuration.
*
* @return A hash code for the connection handler configuration.
*/
@Override()
public int hashCode()
{
return name.toLowerCase().hashCode();
}
/**
* Indicates whether the provided object is considered logically equivalent to
* this LDAP connection handler configuration.
*
* @param o If the provided object is considered logically equivalent to
* this LDAP connection handler configuration, or {@code false} if
* not.
*/
@Override()
public boolean equals(@Nullable final Object o)
{
if (o == null)
{
return false;
}
if (o == this)
{
return true;
}
if (! (o instanceof LDAPConnectionHandlerConfiguration))
{
return false;
}
final LDAPConnectionHandlerConfiguration c =
(LDAPConnectionHandlerConfiguration) o;
return (name.equalsIgnoreCase(c.name) &&
(isEnabled == c.isEnabled) &&
listenAddresses.equals(c.listenAddresses) &&
(port == c.port) &&
(usesSSL == c.usesSSL) &&
(supportsStartTLS == c.supportsStartTLS));
}
/**
* Compares the provided configuration to this configuration to determine the
* relative orders in which they should appear in a supported list. Sorting
* will use the following criteria:
*
* - Connection handlers that are enabled will be ordered before those
* that are disabled.
* - Connection handlers that use SSL will be ordered before those that
* support StartTLS, and those that support StartTLS will be ordered
* before those that do not support StartTLS.
* - An SSL-enabled connection handler named "LDAPS Connection Handler"
* will be ordered before an SSL-enabled connection handler with some
* other name. A non-SSL-enabled connection handler named "LDAP
* Connection Handler" will be ordered before a non-SSL-enabled
* connection handler with some other name.
* - Connection handlers that do not use listen addresses (and therefore
* listen on all interfaces) will be ordered before those that are
* configured with one or more listen addresses.
* - Connection handlers with a lower port number will be ordered before
* those with a higher port number.
* - As a last resort, then connection handlers will be ordered
* lexicographically by name.
*
*
* @param config The LDAP connection handler configuration to compare
* against this configuration.
*
* @return A negative value if this configuration should be ordered before
* the provided configuration, a positive value if the provided
* configuration should be ordered before this configuration, or
* zero if the configurations are considered logically equivalent.
*/
@Override()
public int compareTo(
@Nullable final LDAPConnectionHandlerConfiguration config)
{
if (config == null)
{
return -1;
}
if (isEnabled != config.isEnabled)
{
if (isEnabled)
{
return -1;
}
else
{
return 1;
}
}
if (usesSSL != config.usesSSL)
{
if (usesSSL)
{
return -1;
}
else
{
return 1;
}
}
if (supportsStartTLS != config.supportsStartTLS)
{
if (supportsStartTLS)
{
return -1;
}
else
{
return 1;
}
}
if (! name.equalsIgnoreCase(config.name))
{
if (usesSSL)
{
if (name.equalsIgnoreCase("LDAPS Connection Handler"))
{
return -1;
}
if (config.name.equalsIgnoreCase("LDAPS Connection Handler"))
{
return 1;
}
}
else
{
if (name.equalsIgnoreCase("LDAP Connection Handler"))
{
return -1;
}
if (config.name.equalsIgnoreCase("LDAP Connection Handler"))
{
return 1;
}
}
}
if (! listenAddresses.equals(config.listenAddresses))
{
if (listenAddresses.isEmpty())
{
return -1;
}
else if (config.listenAddresses.isEmpty())
{
return 1;
}
}
if (port != config.port)
{
if (port < config.port)
{
return -1;
}
else
{
return 1;
}
}
return name.toLowerCase().compareTo(config.name.toLowerCase());
}
/**
* Compares the provided configurations to determine their relative orders in
* which they should appear in a supported list. Sorting will use the
* criteria described in the documentation for the {@link #compareTo} method.
*
* @param c1 The first LDAP connection handler configuration to compare.
* @param c2 The second LDAP connection handler configuration to compare.
*
* @return A negative value if the first configuration should be ordered
* before the second configuration, a positive value if the first
* configuration should be ordered after the second configuration, or
* zero if the configurations are considered logically equivalent.
*/
@Override()
public int compare(@NotNull final LDAPConnectionHandlerConfiguration c1,
@NotNull final LDAPConnectionHandlerConfiguration c2)
{
return c1.compareTo(c2);
}
/**
* Retrieves a string representation of this LDAP connection handler
* configuration.
*
* @return A string representation of this LDAP connection handler
* configuration.
*/
@Override()
@NotNull()
public String toString()
{
final StringBuilder buffer = new StringBuilder();
toString(buffer);
return buffer.toString();
}
/**
* Appends a string representation of this LDAP connection handler
* configuration to the provided buffer.
*
* @param buffer The buffer to which the information should be appended.
*/
public void toString(@NotNull final StringBuilder buffer)
{
buffer.append("LDAPConnectionHandlerConfiguration(name='");
buffer.append(name);
buffer.append("', isEnabled=");
buffer.append(isEnabled);
buffer.append(", usesSSL=");
buffer.append(usesSSL);
buffer.append(", supportsStartTLS=");
buffer.append(supportsStartTLS);
buffer.append(", listenAddresses={");
final Iterator iterator = listenAddresses.iterator();
while (iterator.hasNext())
{
buffer.append(" '");
buffer.append(iterator.next());
buffer.append('\'');
if (iterator.hasNext())
{
buffer.append(',');
}
}
buffer.append(" }, listenPort=");
buffer.append(port);
buffer.append(')');
}
}