/*
*
* Copyright (c) 2013 - 2017 Lijun Liao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
*
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* THE AUTHOR LIJUN LIAO. LIJUN LIAO DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the XiPKI software without
* disclosing the source code of your own applications.
*
* For more information, please contact Lijun Liao at this
* address: lijun.liao@gmail.com
*/
package org.xipki.commons.security;
import java.io.IOException;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
import org.xipki.commons.common.util.CollectionUtil;
import org.xipki.commons.common.util.ParamUtil;
/**
*
* <pre>
* ExtensionExistence ::= SEQUENCE
* {
* needExtensions [0] ExtensionTypes EXPLICIT OPTIONAL,
* wantExtensions [1] ExtensionTypes EXPLICIT OPTIONAL,
* }
*
* ExtensionTypes ::= SEQUENCE OF OBJECT IDENTIFIER
* </pre>
*
* @author Lijun Liao
* @since 2.0.0
*/
public class ExtensionExistence extends ASN1Object {
private List<ASN1ObjectIdentifier> needExtensions;
private List<ASN1ObjectIdentifier> wantExtensions;
public ExtensionExistence(final List<ASN1ObjectIdentifier> needExtensions,
final List<ASN1ObjectIdentifier> wantExtensions) {
this.needExtensions = needExtensions;
this.wantExtensions = wantExtensions;
if (this.needExtensions == null) {
List<ASN1ObjectIdentifier> list = Collections.emptyList();
this.needExtensions = Collections.unmodifiableList(list);
}
if (this.wantExtensions == null) {
List<ASN1ObjectIdentifier> list = Collections.emptyList();
this.wantExtensions = Collections.unmodifiableList(list);
}
}
private ExtensionExistence(final ASN1Sequence seq) {
int size = seq.size();
if (size > 2) {
throw new IllegalArgumentException("wrong number of elements in sequence");
}
for (int i = 0; i < size; i++) {
ASN1TaggedObject tagObject = ASN1TaggedObject.getInstance(seq.getObjectAt(i));
int tag = tagObject.getTagNo();
ParamUtil.requireRange("tag", tag, 0, 1);
ASN1Sequence subSeq = ASN1Sequence.getInstance(tagObject.getObject());
List<ASN1ObjectIdentifier> oids = new LinkedList<>();
int subSize = subSeq.size();
for (int j = 0; j < subSize; j++) {
oids.add(ASN1ObjectIdentifier.getInstance(subSeq.getObjectAt(j)));
}
if (tag == 0) {
needExtensions = Collections.unmodifiableList(oids);
} else {
wantExtensions = Collections.unmodifiableList(oids);
}
}
if (needExtensions == null) {
List<ASN1ObjectIdentifier> list = Collections.emptyList();
needExtensions = Collections.unmodifiableList(list);
}
if (wantExtensions == null) {
List<ASN1ObjectIdentifier> list = Collections.emptyList();
wantExtensions = Collections.unmodifiableList(list);
}
} // constructor
@Override
public ASN1Primitive toASN1Primitive() {
ASN1EncodableVector vector = new ASN1EncodableVector();
if (CollectionUtil.isNonEmpty(needExtensions)) {
ASN1EncodableVector vec = new ASN1EncodableVector();
for (ASN1ObjectIdentifier m : needExtensions) {
vec.add(m);
}
vector.add(new DERTaggedObject(true, 0, new DERSequence(vec)));
}
if (CollectionUtil.isNonEmpty(wantExtensions)) {
ASN1EncodableVector vec = new ASN1EncodableVector();
for (ASN1ObjectIdentifier m : wantExtensions) {
vec.add(m);
}
vector.add(new DERTaggedObject(true, 1, new DERSequence(vec)));
}
return new DERSequence(vector);
}
public List<ASN1ObjectIdentifier> getNeedExtensions() {
return needExtensions;
}
public List<ASN1ObjectIdentifier> getWantExtensions() {
return wantExtensions;
}
public static ExtensionExistence getInstance(final Object obj) {
if (obj == null || obj instanceof ExtensionExistence) {
return (ExtensionExistence) obj;
}
if (obj instanceof ASN1Sequence) {
return new ExtensionExistence((ASN1Sequence) obj);
}
if (obj instanceof byte[]) {
try {
return getInstance(ASN1Primitive.fromByteArray((byte[]) obj));
} catch (IOException ex) {
throw new IllegalArgumentException("unable to parse encoded general name");
}
}
throw new IllegalArgumentException("unknown object in getInstance: "
+ obj.getClass().getName());
}
}