Package org.keycloak.storage.ldap.idm.store.ldap

Class BERDecoder

java.lang.Object

org.keycloak.storage.ldap.idm.store.ldap.BERDecoder

public class BERDecoder
extends Object

A decoder for the ASN.1 BER encoding. Very limited implementation, only supports what is needed by the current LDAP extension controls.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	BERDecoder.DecodeException

Field Summary

Fields

Modifier and Type	Field	Description
static final int	TAG_CLASS_CONTEXT_SPECIFIC
static final int	TAG_FORM_PRIMITIVE
static final int	TAG_SEQUENCE

Constructor Summary

Constructors

Constructor	Description
BERDecoder(byte[] encodedValue)

Method Summary

Modifier and Type	Method	Description
byte[]	drainElementValue()	Drain the value bytes of the next element.
boolean	isNextTag(int clazz, int form, int tag)	Check if the next element matches with the given tag, but do not consume it.
void	skipElement()	Skip over the next element.
void	startSequence()	Start decoding a sequence.

Methods inherited from class java.lang.Object

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

Field Details

TAG_SEQUENCE

public static final int TAG_SEQUENCE

See Also:

• Constant Field Values

TAG_CLASS_CONTEXT_SPECIFIC

public static final int TAG_CLASS_CONTEXT_SPECIFIC

See Also:

• Constant Field Values

TAG_FORM_PRIMITIVE

public static final int TAG_FORM_PRIMITIVE

See Also:

• Constant Field Values

Constructor Details

BERDecoder

public BERDecoder(byte[] encodedValue)

Method Details

startSequence

public void startSequence()
                   throws BERDecoder.DecodeException

Start decoding a sequence.

Throws:

BERDecoder.DecodeException

isNextTag

public boolean isNextTag(int clazz,
 int form,
 int tag)

Check if the next element matches with the given tag, but do not consume it. Returns false if there is no more data.

skipElement

public void skipElement()
                 throws BERDecoder.DecodeException

Skip over the next element.

Throws:

BERDecoder.DecodeException

drainElementValue

public byte[] drainElementValue()
                         throws BERDecoder.DecodeException

Drain the value bytes of the next element.

Throws:

BERDecoder.DecodeException