com.unboundid.ldap.sdk

Class CRAMMD5BindRequest

java.lang.Object

com.unboundid.ldap.sdk.LDAPRequest

com.unboundid.ldap.sdk.BindRequest

com.unboundid.ldap.sdk.SASLBindRequest

com.unboundid.ldap.sdk.CRAMMD5BindRequest

All Implemented Interfaces:

ReadOnlyLDAPRequest, java.io.Serializable, javax.security.auth.callback.CallbackHandler

@NotMutable
@ThreadSafety(level=NOT_THREADSAFE)
public final class CRAMMD5BindRequest
extends SASLBindRequest
implements javax.security.auth.callback.CallbackHandler

This class provides a SASL CRAM-MD5 bind request implementation as described in draft-ietf-sasl-crammd5. The CRAM-MD5 mechanism can be used to authenticate over an insecure channel without exposing the credentials (although it requires that the server have access to the clear-text password). It is similar to DIGEST-MD5, but does not provide as many options, and provides slightly weaker protection because the client does not contribute any of the random data used during bind processing.

Elements included in a CRAM-MD5 bind request include:

• Authentication ID -- A string which identifies the user that is attempting to authenticate. It should be an "authzId" value as described in section 5.2.1.8 of RFC 4513. That is, it should be either "dn:" followed by the distinguished name of the target user, or "u:" followed by the username. If the "u:" form is used, then the mechanism used to resolve the provided username to an entry may vary from server to server.
• Password -- The clear-text password for the target user.

Example

The following example demonstrates the process for performing a CRAM-MD5 bind against a directory server with a username of "john.doe" and a password of "password":

 CRAMMD5BindRequest bindRequest =
      new CRAMMD5BindRequest("u:john.doe", "password");
 BindResult bindResult;
 try
 {
   bindResult = connection.bind(bindRequest);
   // If we get here, then the bind was successful.
 }
 catch (LDAPException le)
 {
   // The bind failed for some reason.
   bindResult = new BindResult(le.toLDAPResult());
   ResultCode resultCode = le.getResultCode();
   String errorMessageFromServer = le.getDiagnosticMessage();
 }
 

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CRAMMD5_MECHANISM_NAME The name for the CRAM-MD5 SASL mechanism.

Fields inherited from class com.unboundid.ldap.sdk.SASLBindRequest

CRED_TYPE_SASL

Fields inherited from class com.unboundid.ldap.sdk.BindRequest

VERSION_ELEMENT

Constructor Summary

Constructors

Constructor and Description
CRAMMD5BindRequest(java.lang.String authenticationID, ASN1OctetString password) Creates a new SASL CRAM-MD5 bind request with the provided authentication ID and password.
CRAMMD5BindRequest(java.lang.String authenticationID, ASN1OctetString password, Control... controls) Creates a new SASL CRAM-MD5 bind request with the provided authentication ID, password, and set of controls.
CRAMMD5BindRequest(java.lang.String authenticationID, byte[] password) Creates a new SASL CRAM-MD5 bind request with the provided authentication ID and password.
CRAMMD5BindRequest(java.lang.String authenticationID, byte[] password, Control... controls) Creates a new SASL CRAM-MD5 bind request with the provided authentication ID, password, and set of controls.
CRAMMD5BindRequest(java.lang.String authenticationID, java.lang.String password) Creates a new SASL CRAM-MD5 bind request with the provided authentication ID and password.
CRAMMD5BindRequest(java.lang.String authenticationID, java.lang.String password, Control... controls) Creates a new SASL CRAM-MD5 bind request with the provided authentication ID, password, and set of controls.

Method Summary

Methods

Modifier and Type	Method and Description
CRAMMD5BindRequest	duplicate() Creates a new instance of this LDAP request that may be modified without impacting this request.
CRAMMD5BindRequest	duplicate(Control[] controls) Creates a new instance of this LDAP request that may be modified without impacting this request.
java.lang.String	getAuthenticationID() Retrieves the authentication ID for this bind request.
int	getLastMessageID() Retrieves the message ID for the last LDAP message sent using this request.
byte[]	getPasswordBytes() Retrieves the bytes that comprise the the password for this bind request.
java.lang.String	getPasswordString() Retrieves the string representation of the password for this bind request.
CRAMMD5BindRequest	getRebindRequest(java.lang.String host, int port) Retrieves a bind request that may be used to re-bind using the same credentials authentication type and credentials as previously used to perform the initial bind.
java.lang.String	getSASLMechanismName() Retrieves the name of the SASL mechanism used in this SASL bind request.
void	handle(javax.security.auth.callback.Callback[] callbacks) Handles any necessary callbacks required for SASL authentication.
protected BindResult	process(LDAPConnection connection, int depth) Sends this bind request to the target server over the provided connection and returns the corresponding response.
void	toCode(java.util.List<java.lang.String> lineList, java.lang.String requestID, int indentSpaces, boolean includeProcessing) Appends a number of lines comprising the Java source code that can be used to recreate this request to the given list.
void	toString(java.lang.StringBuilder buffer) Appends a string representation of this request to the provided buffer.

Methods inherited from class com.unboundid.ldap.sdk.SASLBindRequest

getBindType, responseReceived, sendBindRequest, sendMessage

Methods inherited from class com.unboundid.ldap.sdk.BindRequest

getOperationType

Methods inherited from class com.unboundid.ldap.sdk.LDAPRequest

followReferrals, getControl, getControlList, getControls, getIntermediateResponseListener, getReferralConnector, getReferralConnectorInternal, getReferralDepth, getResponseTimeoutMillis, hasControl, hasControl, setFollowReferrals, setIntermediateResponseListener, setReferralConnector, setReferralDepth, setResponseTimeoutMillis, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

CRAMMD5_MECHANISM_NAME

@NotNull
public static final java.lang.String CRAMMD5_MECHANISM_NAME

The name for the CRAM-MD5 SASL mechanism.

See Also:

Constant Field Values

Constructor Detail

CRAMMD5BindRequest

public CRAMMD5BindRequest(@NotNull
                  java.lang.String authenticationID,
                  @NotNull
                  java.lang.String password)

Creates a new SASL CRAM-MD5 bind request with the provided authentication ID and password. It will not include any controls.

Parameters:

authenticationID - The authentication ID for this bind request. It must not be null.

password - The password for this bind request. It must not be null.

CRAMMD5BindRequest

public CRAMMD5BindRequest(@NotNull
                  java.lang.String authenticationID,
                  @NotNull
                  byte[] password)

Creates a new SASL CRAM-MD5 bind request with the provided authentication ID and password. It will not include any controls.

Parameters:

authenticationID - The authentication ID for this bind request. It must not be null.

password - The password for this bind request. It must not be null.

CRAMMD5BindRequest

public CRAMMD5BindRequest(@NotNull
                  java.lang.String authenticationID,
                  @NotNull
                  ASN1OctetString password)

Creates a new SASL CRAM-MD5 bind request with the provided authentication ID and password. It will not include any controls.

Parameters:

authenticationID - The authentication ID for this bind request. It must not be null.

password - The password for this bind request. It must not be null.

CRAMMD5BindRequest

public CRAMMD5BindRequest(@NotNull
                  java.lang.String authenticationID,
                  @NotNull
                  java.lang.String password,
                  @Nullable
                  Control... controls)

Creates a new SASL CRAM-MD5 bind request with the provided authentication ID, password, and set of controls.

Parameters:

authenticationID - The authentication ID for this bind request. It must not be null.

password - The password for this bind request. It must not be null.

controls - The set of controls to include in the request.

CRAMMD5BindRequest

public CRAMMD5BindRequest(@NotNull
                  java.lang.String authenticationID,
                  @NotNull
                  byte[] password,
                  @Nullable
                  Control... controls)

Creates a new SASL CRAM-MD5 bind request with the provided authentication ID, password, and set of controls.

Parameters:

authenticationID - The authentication ID for this bind request. It must not be null.

password - The password for this bind request. It must not be null.

controls - The set of controls to include in the request.

CRAMMD5BindRequest

public CRAMMD5BindRequest(@NotNull
                  java.lang.String authenticationID,
                  @NotNull
                  ASN1OctetString password,
                  @Nullable
                  Control... controls)

Creates a new SASL CRAM-MD5 bind request with the provided authentication ID, password, and set of controls.

Parameters:

authenticationID - The authentication ID for this bind request. It must not be null.

password - The password for this bind request. It must not be null.

controls - The set of controls to include in the request.

Method Detail

getSASLMechanismName

@NotNull
public java.lang.String getSASLMechanismName()

Retrieves the name of the SASL mechanism used in this SASL bind request.

Specified by:

getSASLMechanismName in class SASLBindRequest

Returns:

The name of the SASL mechanism used in this SASL bind request.

getAuthenticationID

@NotNull
public java.lang.String getAuthenticationID()

Retrieves the authentication ID for this bind request.

Returns:

The authentication ID for this bind request.

getPasswordString

@NotNull
public java.lang.String getPasswordString()

Retrieves the string representation of the password for this bind request.

Returns:

The string representation of the password for this bind request.

getPasswordBytes

@NotNull
public byte[] getPasswordBytes()

Retrieves the bytes that comprise the the password for this bind request.

Returns:

The bytes that comprise the password for this bind request.

process

@NotNull
protected BindResult process(@NotNull
                         LDAPConnection connection,
                         int depth)
                      throws LDAPException

Sends this bind request to the target server over the provided connection and returns the corresponding response.

Specified by:

process in class BindRequest

Parameters:

connection - The connection to use to send this bind request to the server and read the associated response.

depth - The current referral depth for this request. It should always be one for the initial request, and should only be incremented when following referrals.

Returns:

The bind response read from the server.

Throws:

LDAPException - If a problem occurs while sending the request or reading the response.

getRebindRequest

@NotNull
public CRAMMD5BindRequest getRebindRequest(@NotNull
                                          java.lang.String host,
                                          int port)

Retrieves a bind request that may be used to re-bind using the same credentials authentication type and credentials as previously used to perform the initial bind. This may be used in an attempt to automatically re-establish a connection that is lost, or potentially when following a referral to another directory instance.

It is recommended that all bind request types which implement this capability be implemented so that the elements needed to create a new request are immutable. If this is not done, then changes made to a bind request object may alter the authentication/authorization identity and/or credentials associated with that request so that a rebind request created from it will not match the original request used to authenticate on a connection.

Overrides:

getRebindRequest in class BindRequest

Parameters:

host - The address of the directory server to which the connection is established.

port - The port of the directory server to which the connection is established.

Returns:

A bind request that may be used to re-bind using the same authentication type and credentials as previously used to perform the initial bind, or null to indicate that automatic re-binding is not supported for this type of bind request.

handle

@InternalUseOnly
public void handle(@NotNull
                          javax.security.auth.callback.Callback[] callbacks)

Handles any necessary callbacks required for SASL authentication.

Specified by:

handle in interface javax.security.auth.callback.CallbackHandler

Parameters:

callbacks - The set of callbacks to be handled.

getLastMessageID

public int getLastMessageID()

Retrieves the message ID for the last LDAP message sent using this request.

Overrides:

getLastMessageID in class SASLBindRequest

Returns:

The message ID for the last LDAP message sent using this request, or -1 if it no LDAP messages have yet been sent using this request.

duplicate

@NotNull
public CRAMMD5BindRequest duplicate()

Creates a new instance of this LDAP request that may be modified without impacting this request.

Specified by:

duplicate in interface ReadOnlyLDAPRequest

Specified by:

duplicate in class BindRequest

Returns:

A new instance of this LDAP request that may be modified without impacting this request.

duplicate

@NotNull
public CRAMMD5BindRequest duplicate(@Nullable
                                   Control[] controls)

Creates a new instance of this LDAP request that may be modified without impacting this request. The provided controls will be used for the new request instead of duplicating the controls from this request.

Specified by:

duplicate in interface ReadOnlyLDAPRequest

Specified by:

duplicate in class BindRequest

Parameters:

controls - The set of controls to include in the duplicate request.

Returns:

A new instance of this LDAP request that may be modified without impacting this request.

toString

public void toString(@NotNull
            java.lang.StringBuilder buffer)

Appends a string representation of this request to the provided buffer.

Specified by:

toString in interface ReadOnlyLDAPRequest

Specified by:

toString in class LDAPRequest

Parameters:

buffer - The buffer to which to append a string representation of this request.

toCode

public void toCode(@NotNull
          java.util.List<java.lang.String> lineList,
          @NotNull
          java.lang.String requestID,
          int indentSpaces,
          boolean includeProcessing)

Appends a number of lines comprising the Java source code that can be used to recreate this request to the given list.

Specified by:

toCode in interface ReadOnlyLDAPRequest

Overrides:

toCode in class SASLBindRequest

Parameters:

lineList - The list to which the source code lines should be added.

requestID - The name that should be used as an identifier for the request. If this is null or empty, then a generic ID will be used.

indentSpaces - The number of spaces that should be used to indent the generated code. It must not be negative.

includeProcessing - Indicates whether the generated code should include code required to actually process the request and handle the result (if true), or just to generate the request (if false).