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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 netscape.security.x509;
import java.io.IOException;
import java.security.cert.CertificateException;
import netscape.security.util.*;
/**
* This class defines the PolicyConstraint ASN.1 object.
*
* @author Amit Kapoor
* @author Hemma Prafullchandra
* @version 1.4
*/
public class PolicyConstraint {
private static final byte TAG_SET = 0;
private static final byte TAG_REQUIRE = 1;
private static final byte TAG_INHIBIT = 2;
private CertificatePolicySet set = null;
private int require = -1;
private int inhibit = -1;
/**
* The default constructor for this object
*
* @param set the CertificatePolicySet (null for optional).
* @param require require explicit policy (-1 for optional).
* @param inhibit inhibit policy mapping (-1 for optional).
*/
public PolicyConstraint(CertificatePolicySet set, int require, int inhibit) {
this.set = set;
this.require = require;
this.inhibit = inhibit;
}
/**
* Create the PolicyConstraint from the DerValue.
*
* @param val the DerValue of the PolicyConstraint.
* @exception IOException on decoding errors.
*/
public PolicyConstraint(DerValue val) throws IOException {
if (val.tag != DerValue.tag_Sequence) {
throw new IOException("Sequence tag missing for PolicyConstraint.");
}
DerInputStream in = val.data;
while (in != null && in.available() != 0) {
DerValue next = in.getDerValue();
switch (next.tag & 0x1f) {
case TAG_SET:
this.set = new CertificatePolicySet(next.data);
break;
case TAG_REQUIRE:
next = next.data.getDerValue();
this.require = (next.getInteger()).toInt();
break;
case TAG_INHIBIT:
next = next.data.getDerValue();
this.inhibit = (next.getInteger()).toInt();
break;
default:
throw new IOException("Invalid tag option for PolicyConstraint.");
}
}
}
/**
* Return user readable form of the object.
*/
public String toString() {
String s = ((set != null) ?
"PolicyConstraint: [\n"
+ " PolicySet:[" + set.toString() + "]\n"
+ " Require:" + require + "\n"
+ " Inhibit:" + inhibit + "\n"
+ "]\n" :
"PolicyConstraint: [\n"
+ " PolicySet:[null]\n"
+ " Require:" + require + "\n"
+ " Inhibit:" + inhibit + "\n"
+ "]\n");
return (s);
}
/**
* Encode the object to the output stream.
*
* @param out the DerOutputStream to encode the object to.
*/
public void encode(DerOutputStream out) throws IOException {
DerOutputStream tagged = new DerOutputStream();
if (set != null) {
DerOutputStream tmp = new DerOutputStream();
set.encode(tmp);
tagged.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, TAG_SET), tmp);
}
if (require != -1) {
DerOutputStream tmp = new DerOutputStream();
tmp.putInteger(new BigInt(require));
tagged.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, TAG_REQUIRE), tmp);
}
if (inhibit != -1) {
DerOutputStream tmp = new DerOutputStream();
tmp.putInteger(new BigInt(inhibit));
tagged.write(DerValue.createTag(DerValue.TAG_CONTEXT,
true, TAG_INHIBIT), tmp);
}
out.write(DerValue.tag_Sequence,tagged);
}
}
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