Extensions.java

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 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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package org.openspcoop2.utils.certificate;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;

/**
 * Extensions
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class Extensions {

    private org.bouncycastle.asn1.x509.Extensions exts;

    public org.bouncycastle.asn1.x509.Extensions getAll() {
        return this.exts;
    }
    public org.bouncycastle.asn1.x509.Extensions getExtensions() {
        return this.exts;
    }

    public org.bouncycastle.asn1.x509.Extension getExtension(String id) {
        org.bouncycastle.asn1.ASN1ObjectIdentifier asn1 = new ASN1ObjectIdentifier(id);
        return getExtension(asn1);
    }
    public org.bouncycastle.asn1.x509.Extension getExtension(org.bouncycastle.asn1.ASN1ObjectIdentifier id) {
        if(this.exts!=null) {
            return this.exts.getExtension(id);
        }
        return null;
    }
    
    public List<String> getOIDs(){
        return getExtensionOIDsEngine(this.getASN1OIDs());
    }
    public List<org.bouncycastle.asn1.ASN1ObjectIdentifier> getASN1OIDs(){
        return getExtensionASN1OIDsEngine(this.exts!=null ? this.exts.getExtensionOIDs() : null);
    }
    
    public List<String> getCriticalOIDs(){
        return getExtensionOIDsEngine(this.getCriticalASN1OIDs());
    }
    public List<org.bouncycastle.asn1.ASN1ObjectIdentifier> getCriticalASN1OIDs(){
        return getExtensionASN1OIDsEngine(this.exts!=null ? this.exts.getCriticalExtensionOIDs() : null);
    }
    
    public List<String> getNonCriticalOIDs(){
        return getExtensionOIDsEngine(this.getNonCriticalASN1OIDs());
    }
    public List<org.bouncycastle.asn1.ASN1ObjectIdentifier> getNonCriticalASN1OIDs(){
        return getExtensionASN1OIDsEngine(this.exts!=null ? this.exts.getNonCriticalExtensionOIDs() : null);
    }
    
    private List<String> getExtensionOIDsEngine(List<org.bouncycastle.asn1.ASN1ObjectIdentifier> l){
        List<String> lR = null;
        if(l!=null && !l.isEmpty()) {
            lR = new ArrayList<>();
            for (org.bouncycastle.asn1.ASN1ObjectIdentifier asn1 : l) {
                lR.add(asn1.getId());
            }
        }
        return lR;
    }
    private List<org.bouncycastle.asn1.ASN1ObjectIdentifier> getExtensionASN1OIDsEngine(org.bouncycastle.asn1.ASN1ObjectIdentifier [] ids){
        List<org.bouncycastle.asn1.ASN1ObjectIdentifier> l = null;
        if(ids!=null && ids.length>0) {
            l = new ArrayList<>();
            l.addAll(Arrays.asList(ids));
        }
        return l;
    }
    
    public boolean hasExtension(String id) {
        return this.getExtension(id)!=null;
    }
    public boolean hasExtension(org.bouncycastle.asn1.ASN1ObjectIdentifier id) {
        return this.getExtension(id)!=null;
    }
    
    public boolean hasCriticalExtension(String id) {
        List<String> criticalList = this.getCriticalOIDs();
        if(criticalList!=null) {
            return criticalList.contains(id);
        }
        return false;
    }
    public boolean hasCriticalExtension(org.bouncycastle.asn1.ASN1ObjectIdentifier id) {
        List<org.bouncycastle.asn1.ASN1ObjectIdentifier> criticalList = this.getCriticalASN1OIDs();
        if(criticalList!=null) {
            return criticalList.contains(id);
        }
        return false;
    }
    
    public boolean hasNonCriticalExtension(String id) {
        List<String> nonCriticalList = this.getNonCriticalOIDs();
        if(nonCriticalList!=null) {
            return nonCriticalList.contains(id);
        }
        return false;
    }
    public boolean hasNonCriticalExtension(org.bouncycastle.asn1.ASN1ObjectIdentifier id) {
        List<org.bouncycastle.asn1.ASN1ObjectIdentifier> nonCriticalList = this.getNonCriticalASN1OIDs();
        if(nonCriticalList!=null) {
            return nonCriticalList.contains(id);
        }
        return false;
    }
    
    public static Extensions getExtensions(byte[]encoded) {
        
        Extensions extObj = new Extensions();
        
        org.bouncycastle.asn1.x509.Certificate c =org.bouncycastle.asn1.x509.Certificate.getInstance(encoded);
        extObj.exts = c.getTBSCertificate().getExtensions();

        return extObj;
        
    }
}