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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cms.servlet.cert.scep;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.cert.CertificateException;
import java.util.Enumeration;
import java.util.Vector;
import netscape.security.util.DerInputStream;
import netscape.security.util.DerValue;
import netscape.security.x509.CertAttrSet;
import netscape.security.x509.Extension;
public class ExtensionsRequested implements CertAttrSet {
public static final String NAME = "EXTENSIONS_REQUESTED";
public static final String KUE_DIGITAL_SIGNATURE = "kue_digital_signature";
public static final String KUE_KEY_ENCIPHERMENT = "kue_key_encipherment";
private String kue_digital_signature = "false";
private String kue_key_encipherment = "false";
private Vector<Extension> exts = new Vector<Extension>();
public ExtensionsRequested(Object stuff) throws IOException {
ByteArrayInputStream is = new ByteArrayInputStream((byte[]) stuff);
try {
decode(is);
} catch (Exception e) {
e.printStackTrace();
throw new IOException(e.getMessage());
}
}
public void encode(OutputStream out)
throws CertificateException, IOException {
}
public void decode(InputStream in)
throws CertificateException, IOException {
DerValue derVal = new DerValue(in);
construct(derVal);
}
public void set(String name, Object obj)
throws CertificateException, IOException {
}
public Object get(String name)
throws CertificateException, IOException {
if (name.equalsIgnoreCase(KUE_DIGITAL_SIGNATURE)) {
return kue_digital_signature;
}
if (name.equalsIgnoreCase(KUE_KEY_ENCIPHERMENT)) {
return kue_key_encipherment;
}
throw new IOException("Unsupported attribute queried");
}
public void delete(String name)
throws CertificateException, IOException {
}
public Enumeration<String> getAttributeNames() {
return (new Vector<String>()).elements();
}
public String getName() {
return NAME;
}
/**
* construct - expects this in the inputstream (from the router):
*
* 211 30 31: SEQUENCE {
* 213 06 10: OBJECT IDENTIFIER '2 16 840 1 113733 1 9 8'
* 225 31 17: SET {
* 227 04 15: OCTET STRING, encapsulates {
* 229 30 13: SEQUENCE {
* 231 30 11: SEQUENCE {
* 233 06 3: OBJECT IDENTIFIER keyUsage (2 5 29 15)
* 238 04 4: OCTET STRING
* : 03 02 05 A0
* : }
* : }
* : }
*
* or this (from IRE client):
*
* 262 30 51: SEQUENCE {
* 264 06 9: OBJECT IDENTIFIER extensionReq (1 2 840 113549 1 9 14)
* 275 31 38: SET {
* 277 30 36: SEQUENCE {
* 279 30 34: SEQUENCE {
* 281 06 3: OBJECT IDENTIFIER subjectAltName (2 5 29 17)
* 286 04 27: OCTET STRING
* : 30 19 87 04 D0 0C 3E 6F 81 03 61 61 61 82 0C 61
* : 61 61 2E 6D 63 6F 6D 2E 63 6F 6D
* : }
* : }
* : }
* : }
*/
private void construct(DerValue dv) throws IOException {
DerInputStream stream = null;
try { // try decoding as sequence first
stream = dv.toDerInputStream();
stream.getDerValue(); // consume stream
stream.reset();
stream.getSequence(2); // consume stream
} catch (IOException ioe) {
// if it failed, the outer sequence may be
// encapsulated in an octet string, as in the first
// example above
byte[] octet_string = dv.getOctetString();
// Make a new input stream from the byte array,
// and re-parse it as a sequence.
dv = new DerValue(octet_string);
stream = dv.toDerInputStream();
stream.getSequence(2); // consume stream
}
// now, the stream will be in the correct format
stream.reset();
while (true) {
DerValue ext_dv = null;
try {
ext_dv = stream.getDerValue();
} catch (IOException ex) {
break;
}
Extension ext = new Extension(ext_dv);
exts.addElement(ext);
}
}
public Vector<Extension> getExtensions() {
return exts;
}
}
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