/* * 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 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(); } }; }