/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying * information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Portions Copyright 2006 Sun Microsystems, Inc.
|
*/
|
package org.opends.server.protocols.asn1;
|
|
|
|
import java.util.ArrayList;
|
import java.util.Iterator;
|
|
import static org.opends.server.loggers.Debug.*;
|
import static org.opends.server.messages.MessageHandler.*;
|
import static org.opends.server.messages.ProtocolMessages.*;
|
import static org.opends.server.protocols.asn1.ASN1Constants.*;
|
import static org.opends.server.util.ServerConstants.*;
|
import static org.opends.server.util.StaticUtils.*;
|
|
|
|
/**
|
* This class defines the data structures and methods to use when interacting
|
* with ASN.1 set elements.
|
*/
|
public class ASN1Set
|
extends ASN1Element
|
{
|
/**
|
* The fully-qualified name of this class for debugging purposes.
|
*/
|
private static final String CLASS_NAME =
|
"org.opends.server.protocols.asn1.ASN1Set";
|
|
|
|
/**
|
* The serial version identifier required to satisfy the compiler because this
|
* class implements the <CODE>java.io.Serializable</CODE> interface. This
|
* value was generated using the <CODE>serialver</CODE> command-line utility
|
* included with the Java SDK.
|
*/
|
private static final long serialVersionUID = 2197633272056656073L;
|
|
|
|
// The set of ASN.1 elements contained in this set.
|
private ArrayList<ASN1Element> elements;
|
|
|
|
|
/**
|
* Creates a new ASN.1 set element with the default type no value.
|
*/
|
public ASN1Set()
|
{
|
super(UNIVERSAL_SET_TYPE);
|
|
assert debugConstructor(CLASS_NAME);
|
|
this.elements = new ArrayList<ASN1Element>();
|
}
|
|
|
|
/**
|
* Creates a new ASN.1 set element with the specified type and no value.
|
*
|
* @param type The BER type for this ASN.1 set.
|
*/
|
public ASN1Set(byte type)
|
{
|
super(type);
|
|
assert debugConstructor(CLASS_NAME, byteToHex(type));
|
|
this.elements = new ArrayList<ASN1Element>();
|
}
|
|
|
|
/**
|
* Creates a new ASN.1 set with the default type and the provided set of
|
* elements.
|
*
|
* @param elements The set of elements to include in this set.
|
*/
|
public ASN1Set(ArrayList<ASN1Element> elements)
|
{
|
super(UNIVERSAL_SET_TYPE, encodeValue(elements));
|
|
assert debugConstructor(CLASS_NAME, String.valueOf(elements));
|
|
if (elements == null)
|
{
|
this.elements = new ArrayList<ASN1Element>();
|
}
|
else
|
{
|
this.elements = elements;
|
}
|
}
|
|
|
|
/**
|
* Creates a new ASN.1 set with the specified type and the provided set of
|
* elements.
|
*
|
* @param type The BER type for this set.
|
* @param elements The set of elements to include in this set.
|
*/
|
public ASN1Set(byte type, ArrayList<ASN1Element> elements)
|
{
|
super(type, encodeValue(elements));
|
|
assert debugConstructor(CLASS_NAME, byteToHex(type),
|
String.valueOf(elements));
|
|
if (elements == null)
|
{
|
this.elements = new ArrayList<ASN1Element>();
|
}
|
else
|
{
|
this.elements = elements;
|
}
|
}
|
|
|
|
/**
|
* Creates a new ASN.1 set with the specified type and value and the
|
* provided set of elements.
|
*
|
* @param type The BER type for this set.
|
* @param value The encoded value for this set.
|
* @param elements The set of elements to include in this set.
|
*/
|
private ASN1Set(byte type, byte[] value, ArrayList<ASN1Element> elements)
|
{
|
super(type, value);
|
|
assert debugConstructor(CLASS_NAME, byteToHex(type), bytesToHex(value),
|
String.valueOf(elements));
|
|
if (elements == null)
|
{
|
this.elements = new ArrayList<ASN1Element>();
|
}
|
else
|
{
|
this.elements = elements;
|
}
|
}
|
|
|
|
/**
|
* Retrieves the set of elements contained in this ASN.1 set. The returned
|
* list must not be modified by the caller.
|
*
|
* @return The set of elements contained in this ASN.1 set.
|
*/
|
public ArrayList<ASN1Element> elements()
|
{
|
assert debugEnter(CLASS_NAME, "elements");
|
|
return elements;
|
}
|
|
|
|
/**
|
* Specifies the set of elements for this ASN.1 set.
|
*
|
* @param elements The set of elements for this ASN.1 set.
|
*/
|
public void setElements(ArrayList<ASN1Element> elements)
|
{
|
assert debugEnter(CLASS_NAME, "setValue", String.valueOf(elements));
|
|
if (elements == null)
|
{
|
this.elements.clear();
|
setValueInternal(NO_VALUE);
|
}
|
else
|
{
|
this.elements = elements;
|
setValueInternal(encodeValue(elements));
|
}
|
}
|
|
|
|
/**
|
* Specifies the value for this ASN.1 set element.
|
*
|
* @param value The encoded value for this ASN.1 set element.
|
*
|
* @throws ASN1Exception If the provided array is null or cannot be decoded
|
* as a set of ASN.1 elements.
|
*/
|
public void setValue(byte[] value)
|
throws ASN1Exception
|
{
|
assert debugEnter(CLASS_NAME, "setValue", bytesToHex(value));
|
|
if (value == null)
|
{
|
int msgID = MSGID_ASN1_SET_SET_VALUE_NULL;
|
String message = getMessage(msgID);
|
throw new ASN1Exception(msgID, message);
|
}
|
|
elements = decodeElements(value);
|
setValueInternal(value);
|
}
|
|
|
|
/**
|
* Decodes the provided ASN.1 element as a set element.
|
*
|
* @param element The ASN.1 element to decode as a set element.
|
*
|
* @return The decoded ASN.1 set element.
|
*
|
* @throws ASN1Exception If the provided ASN.1 element cannot be decoded as
|
* a set element.
|
*/
|
public static ASN1Set decodeAsSet(ASN1Element element)
|
throws ASN1Exception
|
{
|
assert debugEnter(CLASS_NAME, "decodeAsSet", String.valueOf(element));
|
|
if (element == null)
|
{
|
int msgID = MSGID_ASN1_SET_DECODE_ELEMENT_NULL;
|
String message = getMessage(msgID);
|
throw new ASN1Exception(msgID, message);
|
}
|
|
byte[] value = element.value();
|
ArrayList<ASN1Element> elements = decodeElements(value);
|
return new ASN1Set(element.getType(), value, elements);
|
}
|
|
|
|
/**
|
* Decodes the provided byte array as an ASN.1 set element.
|
*
|
* @param encodedElement The byte array to decode as an ASN.1 set element.
|
*
|
* @return The decoded ASN.1 set element.
|
*
|
* @throws ASN1Exception If the provided byte array cannot be decoded as an
|
* ASN.1 set element.
|
*/
|
public static ASN1Set decodeAsSet(byte[] encodedElement)
|
throws ASN1Exception
|
{
|
assert debugEnter(CLASS_NAME, "decodeAsSet",
|
bytesToHex(encodedElement));
|
|
// First make sure that the array is not null and long enough to contain
|
// a valid ASN.1 set element.
|
if (encodedElement == null)
|
{
|
int msgID = MSGID_ASN1_SET_DECODE_ARRAY_NULL;
|
String message = getMessage(msgID);
|
throw new ASN1Exception(msgID, message);
|
}
|
|
if (encodedElement.length < 2)
|
{
|
int msgID = MSGID_ASN1_SHORT_ELEMENT;
|
String message = getMessage(msgID, encodedElement.length);
|
throw new ASN1Exception(msgID, message);
|
}
|
|
|
// Next, decode the length. This allows multi-byte lengths with up to four
|
// bytes used to indicate how many bytes are in the length.
|
byte type = encodedElement[0];
|
int length = (encodedElement[1] & 0x7F);
|
int valueStartPos = 2;
|
if (length != encodedElement[1])
|
{
|
int numLengthBytes = length;
|
if (numLengthBytes > 4)
|
{
|
int msgID = MSGID_ASN1_INVALID_NUM_LENGTH_BYTES;
|
String message = getMessage(msgID, numLengthBytes);
|
throw new ASN1Exception(msgID, message);
|
}
|
else if (encodedElement.length < (2 + numLengthBytes))
|
{
|
int msgID = MSGID_ASN1_TRUNCATED_LENGTH;
|
String message = getMessage(msgID, numLengthBytes);
|
throw new ASN1Exception(msgID, message);
|
}
|
|
length = 0x00;
|
valueStartPos = 2 + numLengthBytes;
|
for (int i=0; i < numLengthBytes; i++)
|
{
|
length = (length << 8) | (encodedElement[i+2] & 0xFF);
|
}
|
}
|
|
|
// Make sure that the number of bytes left is equal to the number of bytes
|
// in the value.
|
if ((encodedElement.length - valueStartPos) != length)
|
{
|
int msgID = MSGID_ASN1_LENGTH_MISMATCH;
|
String message = getMessage(msgID, length,
|
(encodedElement.length - valueStartPos));
|
throw new ASN1Exception(msgID, message);
|
}
|
|
|
// Copy the value, decode the elements it contains, and construct the set to
|
// return.
|
byte[] value = new byte[length];
|
System.arraycopy(encodedElement, valueStartPos, value, 0, length);
|
ArrayList<ASN1Element> elements = decodeElements(value);
|
return new ASN1Set(type, value, elements);
|
}
|
|
|
|
/**
|
* Appends a string representation of this ASN.1 set element to the
|
* provided buffer.
|
*
|
* @param buffer The buffer to which the information should be appended.
|
*/
|
public void toString(StringBuilder buffer)
|
{
|
assert debugEnter(CLASS_NAME, "toString", "java.lang.StringBuilder");
|
|
buffer.append("ASN1Set(type=");
|
buffer.append(byteToHex(getType()));
|
buffer.append(", values={ ");
|
|
if (! elements.isEmpty())
|
{
|
Iterator<ASN1Element> iterator = elements.iterator();
|
|
iterator.next().toString(buffer);
|
|
while (iterator.hasNext())
|
{
|
buffer.append(", ");
|
iterator.next().toString(buffer);
|
}
|
}
|
|
buffer.append(" })");
|
}
|
|
|
|
/**
|
* Appends a string representation of this protocol element to the provided
|
* buffer.
|
*
|
* @param buffer The buffer into which the string representation should be
|
* written.
|
* @param indent The number of spaces that should be used to indent the
|
* resulting string representation.
|
*/
|
public void toString(StringBuilder buffer, int indent)
|
{
|
assert debugEnter(CLASS_NAME, "toString", "java.lang.StringBuilder",
|
String.valueOf(indent));
|
|
StringBuilder indentBuf = new StringBuilder(indent);
|
for (int i=0 ; i < indent; i++)
|
{
|
indentBuf.append(' ');
|
}
|
|
buffer.append(indentBuf);
|
buffer.append("ASN.1 Set");
|
buffer.append(EOL);
|
|
buffer.append(indentBuf);
|
buffer.append(" BER Type: ");
|
buffer.append(byteToHex(getType()));
|
buffer.append(EOL);
|
|
if (! elements.isEmpty())
|
{
|
buffer.append(indentBuf);
|
buffer.append(" Decoded Values:");
|
buffer.append(EOL);
|
|
Iterator<ASN1Element> iterator = elements.iterator();
|
|
buffer.append(indentBuf);
|
buffer.append(" ");
|
iterator.next().toString(buffer);
|
buffer.append(EOL);
|
|
while (iterator.hasNext())
|
{
|
buffer.append(indentBuf);
|
buffer.append(" ");
|
iterator.next().toString(buffer);
|
buffer.append(EOL);
|
}
|
}
|
|
|
buffer.append(indentBuf);
|
buffer.append(" Value: ");
|
buffer.append(EOL);
|
byteArrayToHexPlusAscii(buffer, value(), indent+2);
|
}
|
}
|
