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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.cmscore.extensions;
import java.io.IOException;
import netscape.security.util.DerOutputStream;
import netscape.security.util.ObjectIdentifier;
import netscape.security.x509.Extension;
import netscape.security.x509.KeyUsageExtension;
import netscape.security.x509.PKIXExtensions;
import com.netscape.certsrv.apps.CMS;
import com.netscape.certsrv.base.EBaseException;
import com.netscape.certsrv.base.IArgBlock;
import com.netscape.certsrv.base.IConfigStore;
import com.netscape.certsrv.base.ISubsystem;
import com.netscape.certsrv.extensions.EExtensionsException;
import com.netscape.certsrv.extensions.ICMSExtension;
import com.netscape.certsrv.logging.ILogger;
import com.netscape.cmscore.util.Debug;
public class KeyUsage implements ICMSExtension {
private final static String NAME = "KeyUsageExtension";
private final static ObjectIdentifier OID = PKIXExtensions.KeyUsage_Id;
private IConfigStore mConfig = null;
private boolean mSetDefault = false;
private ILogger mLogger;
public KeyUsage(boolean setDefault) {
mSetDefault = setDefault;
mLogger = CMS.getLogger();
}
public void init(ISubsystem owner, IConfigStore config)
throws EBaseException {
// nothing to do here.
mConfig = config;
}
public String getName() {
return NAME;
}
public ObjectIdentifier getOID() {
return OID;
}
protected static final boolean[] DEF_BITS =
new boolean[KeyUsageExtension.NBITS];
static {
// set default bits used when request missing key usage info.
DEF_BITS[KeyUsageExtension.DIGITAL_SIGNATURE_BIT] = true;
DEF_BITS[KeyUsageExtension.NON_REPUDIATION_BIT] = false;
DEF_BITS[KeyUsageExtension.KEY_ENCIPHERMENT_BIT] = true;
DEF_BITS[KeyUsageExtension.DATA_ENCIPHERMENT_BIT] = true;
DEF_BITS[KeyUsageExtension.KEY_AGREEMENT_BIT] = false;
DEF_BITS[KeyUsageExtension.KEY_CERTSIGN_BIT] = false;
DEF_BITS[KeyUsageExtension.CRL_SIGN_BIT] = false;
DEF_BITS[KeyUsageExtension.ENCIPHER_ONLY_BIT] = false;
DEF_BITS[KeyUsageExtension.DECIPHER_ONLY_BIT] = false;
}
private static boolean getBoolean(Object value) {
String val = (String) value;
if (val != null &&
(val.equalsIgnoreCase("true") || val.equalsIgnoreCase("on")))
return true;
else
return false;
}
public Extension getExtension(IArgBlock args) throws EBaseException {
boolean[] bits = new boolean[KeyUsageExtension.NBITS];
Object[] values = new Object[KeyUsageExtension.NBITS];
int bit;
// check if no bits are set. If not set default bits.
bit = KeyUsageExtension.DIGITAL_SIGNATURE_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.NON_REPUDIATION_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.KEY_ENCIPHERMENT_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.DATA_ENCIPHERMENT_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.KEY_AGREEMENT_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.KEY_CERTSIGN_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.CRL_SIGN_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.ENCIPHER_ONLY_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
bit = KeyUsageExtension.DECIPHER_ONLY_BIT;
values[bit] = args.get(KeyUsageExtension.names[bit]);
// if nothing is set, make one with default set of bits.
int i;
for (i = 0; i < KeyUsageExtension.NBITS; i++) {
if (values[i] != null && (values[i] instanceof String))
break;
}
if (i == KeyUsageExtension.NBITS && mSetDefault) {
// no key usage extension parameters are requested. set default.
CMS.debug(
"No Key usage bits requested. Setting default.");
bits = DEF_BITS;
} else {
bit = KeyUsageExtension.DIGITAL_SIGNATURE_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.NON_REPUDIATION_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.KEY_ENCIPHERMENT_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.DATA_ENCIPHERMENT_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.KEY_AGREEMENT_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.KEY_CERTSIGN_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.CRL_SIGN_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.ENCIPHER_ONLY_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
bit = KeyUsageExtension.DECIPHER_ONLY_BIT;
bits[bit] = getBoolean(values[bit]);
if (Debug.ON)
Debug.trace("Requested key usage bit " + bit + " " + bits[bit]);
}
try {
int j = 0;
for (j = 0; j < bits.length; j++) {
if (bits[j])
break;
}
if (j == bits.length) {
if (!mSetDefault)
return null;
else
bits = DEF_BITS;
}
return new KeyUsageExtension(bits);
} catch (IOException e) {
throw new EExtensionsException(
CMS.getUserMessage("CMS_EXTENSION_CREATING_EXT_ERROR", NAME));
}
}
public IArgBlock getFormParams(Extension extension)
throws EBaseException {
KeyUsageExtension ext = null;
if (!extension.getExtensionId().equals(PKIXExtensions.KeyUsage_Id)) {
return null;
}
if (extension instanceof KeyUsageExtension) {
ext = (KeyUsageExtension) extension;
} else {
try {
DerOutputStream der = new DerOutputStream();
byte[] value = extension.getExtensionValue();
ext = new KeyUsageExtension(new Boolean(true), value);
} catch (IOException e) {
return null;
}
}
IArgBlock params = CMS.createArgBlock();
boolean[] bits = ext.getBits();
params.set(KeyUsageExtension.DIGITAL_SIGNATURE,
String.valueOf(bits[KeyUsageExtension.DIGITAL_SIGNATURE_BIT]));
params.set(KeyUsageExtension.NON_REPUDIATION,
String.valueOf(bits[KeyUsageExtension.NON_REPUDIATION_BIT]));
params.set(KeyUsageExtension.KEY_ENCIPHERMENT,
String.valueOf(bits[KeyUsageExtension.KEY_ENCIPHERMENT_BIT]));
params.set(KeyUsageExtension.DATA_ENCIPHERMENT,
String.valueOf(bits[KeyUsageExtension.DATA_ENCIPHERMENT_BIT]));
params.set(KeyUsageExtension.KEY_AGREEMENT,
String.valueOf(bits[KeyUsageExtension.KEY_AGREEMENT_BIT]));
params.set(KeyUsageExtension.KEY_CERTSIGN,
String.valueOf(bits[KeyUsageExtension.KEY_CERTSIGN_BIT]));
params.set(KeyUsageExtension.CRL_SIGN,
String.valueOf(bits[KeyUsageExtension.CRL_SIGN_BIT]));
params.set(KeyUsageExtension.ENCIPHER_ONLY,
String.valueOf(bits[KeyUsageExtension.ENCIPHER_ONLY_BIT]));
params.set(KeyUsageExtension.DECIPHER_ONLY,
String.valueOf(bits[KeyUsageExtension.DECIPHER_ONLY_BIT]));
return params;
}
}
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