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/*
* Copyright 2009-2022 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright 2009-2022 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) 2009-2022 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.protocol;
import com.unboundid.asn1.ASN1Buffer;
import com.unboundid.asn1.ASN1BufferSequence;
import com.unboundid.asn1.ASN1Element;
import com.unboundid.asn1.ASN1Integer;
import com.unboundid.asn1.ASN1OctetString;
import com.unboundid.asn1.ASN1Sequence;
import com.unboundid.asn1.ASN1StreamReader;
import com.unboundid.asn1.ASN1StreamReaderSequence;
import com.unboundid.ldap.sdk.BindRequest;
import com.unboundid.ldap.sdk.Control;
import com.unboundid.ldap.sdk.GenericSASLBindRequest;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.ldap.sdk.SimpleBindRequest;
import com.unboundid.util.LDAPSDKUsageException;
import com.unboundid.util.Debug;
import com.unboundid.util.InternalUseOnly;
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 com.unboundid.util.Validator;
import static com.unboundid.ldap.protocol.ProtocolMessages.*;
/**
* This class provides an implementation of an LDAP bind request protocol op.
*/
@InternalUseOnly()
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class BindRequestProtocolOp
implements ProtocolOp
{
/**
* The credentials type for simple bind requests.
*/
public static final byte CRED_TYPE_SIMPLE = (byte) 0x80;
/**
* The credentials type for SASL bind requests.
*/
public static final byte CRED_TYPE_SASL = (byte) 0xA3;
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 6661208657485444954L;
// The credentials to use for SASL authentication.
@Nullable private final ASN1OctetString saslCredentials;
// The password to use for simple authentication.
@Nullable private final ASN1OctetString simplePassword;
// The credentials type for this bind request.
private final byte credentialsType;
// The protocol version for this bind request.
private final int version;
// The bind DN to use for this bind request.
@NotNull private final String bindDN;
// The name of the SASL mechanism.
@Nullable private final String saslMechanism;
/**
* Creates a new bind request protocol op for a simple bind.
*
* @param bindDN The DN for this bind request.
* @param password The password for this bind request.
*/
public BindRequestProtocolOp(@Nullable final String bindDN,
@Nullable final String password)
{
if (bindDN == null)
{
this.bindDN = "";
}
else
{
this.bindDN = bindDN;
}
if (password == null)
{
simplePassword = new ASN1OctetString(CRED_TYPE_SIMPLE);
}
else
{
simplePassword = new ASN1OctetString(CRED_TYPE_SIMPLE, password);
}
version = 3;
credentialsType = CRED_TYPE_SIMPLE;
saslMechanism = null;
saslCredentials = null;
}
/**
* Creates a new bind request protocol op for a simple bind.
*
* @param bindDN The DN for this bind request.
* @param password The password for this bind request.
*/
public BindRequestProtocolOp(@Nullable final String bindDN,
@Nullable final byte[] password)
{
if (bindDN == null)
{
this.bindDN = "";
}
else
{
this.bindDN = bindDN;
}
if (password == null)
{
simplePassword = new ASN1OctetString(CRED_TYPE_SIMPLE);
}
else
{
simplePassword = new ASN1OctetString(CRED_TYPE_SIMPLE, password);
}
version = 3;
credentialsType = CRED_TYPE_SIMPLE;
saslMechanism = null;
saslCredentials = null;
}
/**
* Creates a new bind request protocol op for a SASL bind.
*
* @param bindDN The DN for this bind request.
* @param saslMechanism The name of the SASL mechanism for this bind
* request. It must not be {@code null}.
* @param saslCredentials The SASL credentials for this bind request, if
* any.
*/
public BindRequestProtocolOp(@Nullable final String bindDN,
@NotNull final String saslMechanism,
@Nullable final ASN1OctetString saslCredentials)
{
this.saslMechanism = saslMechanism;
this.saslCredentials = saslCredentials;
if (bindDN == null)
{
this.bindDN = "";
}
else
{
this.bindDN = bindDN;
}
version = 3;
credentialsType = CRED_TYPE_SASL;
simplePassword = null;
}
/**
* Creates a new bind request protocol op from the provided bind request
* object.
*
* @param request The simple bind request to use to create this protocol op.
* It must have been created with a static password rather
* than using a password provider.
*
* @throws LDAPSDKUsageException If the provided simple bind request is
* configured to use a password provider
* rather than a static password.
*/
public BindRequestProtocolOp(@NotNull final SimpleBindRequest request)
throws LDAPSDKUsageException
{
version = 3;
credentialsType = CRED_TYPE_SIMPLE;
bindDN = request.getBindDN();
simplePassword = request.getPassword();
saslMechanism = null;
saslCredentials = null;
if (simplePassword == null)
{
throw new LDAPSDKUsageException(
ERR_BIND_REQUEST_CANNOT_CREATE_WITH_PASSWORD_PROVIDER.get());
}
}
/**
* Creates a new bind request protocol op from the provided bind request
* object.
*
* @param request The generic SASL bind request to use to create this
* protocol op.
*/
public BindRequestProtocolOp(@NotNull final GenericSASLBindRequest request)
{
version = 3;
credentialsType = CRED_TYPE_SASL;
bindDN = request.getBindDN();
simplePassword = null;
saslMechanism = request.getSASLMechanismName();
saslCredentials = request.getCredentials();
}
/**
* Creates a new bind request protocol op read from the provided ASN.1 stream
* reader.
*
* @param reader The ASN.1 stream reader from which to read the bind request
* protocol op.
*
* @throws LDAPException If a problem occurs while reading or parsing the
* bind request.
*/
BindRequestProtocolOp(@NotNull final ASN1StreamReader reader)
throws LDAPException
{
try
{
reader.beginSequence();
version = reader.readInteger();
bindDN = reader.readString();
credentialsType = (byte) reader.peek();
Validator.ensureNotNull(bindDN);
switch (credentialsType)
{
case CRED_TYPE_SIMPLE:
simplePassword =
new ASN1OctetString(credentialsType, reader.readBytes());
saslMechanism = null;
saslCredentials = null;
Validator.ensureNotNull(bindDN);
break;
case CRED_TYPE_SASL:
final ASN1StreamReaderSequence saslSequence = reader.beginSequence();
saslMechanism = reader.readString();
Validator.ensureNotNull(saslMechanism);
if (saslSequence.hasMoreElements())
{
saslCredentials = new ASN1OctetString(reader.readBytes());
}
else
{
saslCredentials = null;
}
simplePassword = null;
break;
default:
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_BIND_REQUEST_INVALID_CRED_TYPE.get(
StaticUtils.toHex(credentialsType)));
}
}
catch (final LDAPException le)
{
Debug.debugException(le);
throw le;
}
catch (final Exception e)
{
Debug.debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_BIND_REQUEST_CANNOT_DECODE.get(
StaticUtils.getExceptionMessage(e)),
e);
}
}
/**
* Creates a new bind request protocol op with the provided information.
*
* @param version The protocol version.
* @param bindDN The bind DN. It must not be {@code null} (but may
* be empty).
* @param credentialsType The type of credentials supplied.
* @param simplePassword The password for simple authentication, if
* appropriate.
* @param saslMechanism The name of the SASL mechanism, if appropriate.
* @param saslCredentials The SASL credentials, if appropriate.
*/
private BindRequestProtocolOp(final int version, @NotNull final String bindDN,
final byte credentialsType,
@Nullable final ASN1OctetString simplePassword,
@Nullable final String saslMechanism,
@Nullable final ASN1OctetString saslCredentials)
{
this.version = version;
this.bindDN = bindDN;
this.credentialsType = credentialsType;
this.simplePassword = simplePassword;
this.saslMechanism = saslMechanism;
this.saslCredentials = saslCredentials;
}
/**
* Retrieves the protocol version for this bind request.
*
* @return The protocol version for this bind request.
*/
public int getVersion()
{
return version;
}
/**
* Retrieves the bind DN for this bind request.
*
* @return The bind DN for this bind request, or an empty string if none was
* provided.
*/
@NotNull()
public String getBindDN()
{
return bindDN;
}
/**
* Retrieves the credentials type for this bind request. It will either be
* {@link #CRED_TYPE_SIMPLE} or {@link #CRED_TYPE_SASL}.
*
* @return The credentials type for this bind request.
*/
public byte getCredentialsType()
{
return credentialsType;
}
/**
* Retrieves the password to use for simple authentication.
*
* @return The password to use for simple authentication, or {@code null} if
* SASL authentication will be used.
*/
@Nullable()
public ASN1OctetString getSimplePassword()
{
return simplePassword;
}
/**
* Retrieves the name of the SASL mechanism for this bind request.
*
* @return The name of the SASL mechanism for this bind request, or
* {@code null} if simple authentication will be used.
*/
@Nullable()
public String getSASLMechanism()
{
return saslMechanism;
}
/**
* Retrieves the credentials to use for SASL authentication, if any.
*
* @return The credentials to use for SASL authentication, or {@code null} if
* there are no SASL credentials or if simple authentication will be
* used.
*/
@Nullable()
public ASN1OctetString getSASLCredentials()
{
return saslCredentials;
}
/**
* {@inheritDoc}
*/
@Override()
public byte getProtocolOpType()
{
return LDAPMessage.PROTOCOL_OP_TYPE_BIND_REQUEST;
}
/**
* {@inheritDoc}
*/
@Override()
@NotNull()
public ASN1Element encodeProtocolOp()
{
final ASN1Element credentials;
if (credentialsType == CRED_TYPE_SIMPLE)
{
credentials = simplePassword;
}
else
{
if (saslCredentials == null)
{
credentials = new ASN1Sequence(CRED_TYPE_SASL,
new ASN1OctetString(saslMechanism));
}
else
{
credentials = new ASN1Sequence(CRED_TYPE_SASL,
new ASN1OctetString(saslMechanism),
saslCredentials);
}
}
return new ASN1Sequence(LDAPMessage.PROTOCOL_OP_TYPE_BIND_REQUEST,
new ASN1Integer(version),
new ASN1OctetString(bindDN),
credentials);
}
/**
* Decodes the provided ASN.1 element as a bind request protocol op.
*
* @param element The ASN.1 element to be decoded.
*
* @return The decoded bind request protocol op.
*
* @throws LDAPException If the provided ASN.1 element cannot be decoded as
* a bind request protocol op.
*/
@NotNull()
public static BindRequestProtocolOp decodeProtocolOp(
@NotNull final ASN1Element element)
throws LDAPException
{
try
{
final ASN1Element[] elements =
ASN1Sequence.decodeAsSequence(element).elements();
final int version = ASN1Integer.decodeAsInteger(elements[0]).intValue();
final String bindDN =
ASN1OctetString.decodeAsOctetString(elements[1]).stringValue();
final ASN1OctetString saslCredentials;
final ASN1OctetString simplePassword;
final String saslMechanism;
switch (elements[2].getType())
{
case CRED_TYPE_SIMPLE:
simplePassword = ASN1OctetString.decodeAsOctetString(elements[2]);
saslMechanism = null;
saslCredentials = null;
break;
case CRED_TYPE_SASL:
final ASN1Element[] saslElements =
ASN1Sequence.decodeAsSequence(elements[2]).elements();
saslMechanism = ASN1OctetString.decodeAsOctetString(saslElements[0]).
stringValue();
if (saslElements.length == 1)
{
saslCredentials = null;
}
else
{
saslCredentials =
ASN1OctetString.decodeAsOctetString(saslElements[1]);
}
simplePassword = null;
break;
default:
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_BIND_REQUEST_INVALID_CRED_TYPE.get(
StaticUtils.toHex(elements[2].getType())));
}
return new BindRequestProtocolOp(version, bindDN, elements[2].getType(),
simplePassword, saslMechanism, saslCredentials);
}
catch (final LDAPException le)
{
Debug.debugException(le);
throw le;
}
catch (final Exception e)
{
Debug.debugException(e);
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_BIND_REQUEST_CANNOT_DECODE.get(
StaticUtils.getExceptionMessage(e)),
e);
}
}
/**
* {@inheritDoc}
*/
@Override()
public void writeTo(@NotNull final ASN1Buffer buffer)
{
final ASN1BufferSequence opSequence =
buffer.beginSequence(LDAPMessage.PROTOCOL_OP_TYPE_BIND_REQUEST);
buffer.addInteger(version);
buffer.addOctetString(bindDN);
if (credentialsType == CRED_TYPE_SIMPLE)
{
buffer.addElement(simplePassword);
}
else
{
final ASN1BufferSequence saslSequence =
buffer.beginSequence(CRED_TYPE_SASL);
buffer.addOctetString(saslMechanism);
if (saslCredentials != null)
{
buffer.addElement(saslCredentials);
}
saslSequence.end();
}
opSequence.end();
buffer.setZeroBufferOnClear();
}
/**
* Creates a new bind request object from this bind request protocol op.
*
* @param controls The set of controls to include in the bind request. It
* may be empty or {@code null} if no controls should be
* included.
*
* @return The bind request that was created.
*/
@NotNull()
public BindRequest toBindRequest(@Nullable final Control... controls)
{
if (credentialsType == CRED_TYPE_SIMPLE)
{
return new SimpleBindRequest(bindDN, simplePassword.getValue(),
controls);
}
else
{
return new GenericSASLBindRequest(bindDN, saslMechanism,
saslCredentials, controls);
}
}
/**
* Retrieves a string representation of this protocol op.
*
* @return A string representation of this protocol op.
*/
@Override()
@NotNull()
public String toString()
{
final StringBuilder buffer = new StringBuilder();
toString(buffer);
return buffer.toString();
}
/**
* {@inheritDoc}
*/
@Override()
public void toString(@NotNull final StringBuilder buffer)
{
buffer.append("BindRequestProtocolOp(version=");
buffer.append(version);
buffer.append(", bindDN='");
buffer.append(bindDN);
buffer.append("', type=");
if (credentialsType == CRED_TYPE_SIMPLE)
{
buffer.append("simple");
}
else
{
buffer.append("SASL, mechanism=");
buffer.append(saslMechanism);
}
buffer.append(')');
}
}
