org.apache.harmony.security.x509.BasicConstraints Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.harmony.security.x509;
import java.io.IOException;
import java.math.BigInteger;
import org.apache.harmony.security.asn1.ASN1Boolean;
import org.apache.harmony.security.asn1.ASN1Integer;
import org.apache.harmony.security.asn1.ASN1Sequence;
import org.apache.harmony.security.asn1.ASN1Type;
import org.apache.harmony.security.asn1.BerInputStream;
/**
* Basic Constraints Extension (OID == 2.5.29.19).
*
* The ASN.1 definition for Basic Constraints Extension is:
*
*
* id-ce-basicConstraints OBJECT IDENTIFIER ::= { id-ce 19 }
*
* BasicConstraints ::= SEQUENCE {
* ca BOOLEAN DEFAULT FALSE,
* pathLenConstraint INTEGER (0..MAX) OPTIONAL
* }
*
* (as specified in RFC 3280)
*/
public final class BasicConstraints extends ExtensionValue {
/** is CA */
private boolean ca = false;
/** path len constraint */
private int pathLenConstraint = Integer.MAX_VALUE;
/**
* Creates the extension object on the base of its encoded form.
*/
public BasicConstraints(byte[] encoding) throws IOException {
super(encoding);
Object[] values = (Object[]) ASN1.decode(encoding);
ca = (Boolean) values[0];
if (values[1] != null) {
pathLenConstraint = new BigInteger((byte[]) values[1]).intValue();
}
}
public boolean getCa() {
return ca;
}
public int getPathLenConstraint() {
return pathLenConstraint;
}
/**
* Returns the encoded form of the object.
*/
public byte[] getEncoded() {
if (encoding == null) {
encoding = ASN1.encode(new Object[]{ca, BigInteger.valueOf(pathLenConstraint) });
}
return encoding;
}
public void dumpValue(StringBuilder sb, String prefix) {
sb.append(prefix).append("BasicConstraints [\n").append(prefix)
.append(" CA: ").append(ca)
.append("\n ").append(prefix).append("pathLenConstraint: ")
.append(pathLenConstraint).append('\n').append(prefix)
.append("]\n");
}
/**
* ASN.1 Encoder/Decoder.
*/
public static final ASN1Type ASN1 = new ASN1Sequence(new ASN1Type[] {
ASN1Boolean.getInstance(), ASN1Integer.getInstance() }) {
{
setDefault(Boolean.FALSE, 0);
setOptional(1);
}
public Object getDecodedObject(BerInputStream in) throws IOException {
return in.content;
}
protected void getValues(Object object, Object[] values) {
Object[] array = (Object[]) object;
values[0] = array[0];
values[1] = ((BigInteger) array[1]).toByteArray();
}
};
}