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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.cmsutil.ocsp;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.math.BigInteger;
import java.security.MessageDigest;
import netscape.security.x509.X500Name;
import netscape.security.x509.X509CertImpl;
import netscape.security.x509.X509Key;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.ContentType;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.mozilla.jss.CryptoManager;
import org.mozilla.jss.asn1.INTEGER;
import org.mozilla.jss.asn1.NULL;
import org.mozilla.jss.asn1.OBJECT_IDENTIFIER;
import org.mozilla.jss.asn1.OCTET_STRING;
import org.mozilla.jss.asn1.SEQUENCE;
import org.mozilla.jss.crypto.X509Certificate;
import org.mozilla.jss.pkix.primitive.AlgorithmIdentifier;
import com.netscape.cmsutil.util.Utils;
/**
* This class implements an OCSP utility.
*
* @version $Revision$, $Date$
*/
public class OCSPProcessor {
public boolean verbose;
public OCSPProcessor() {
}
public void setVerbose(boolean verbose) {
this.verbose = verbose;
}
public boolean isVerbose() {
return verbose;
}
/**
* Create OCSP request from binary data.
*/
public OCSPRequest createRequest(byte[] data) throws Exception {
OCSPRequest.Template template = new OCSPRequest.Template();
return (OCSPRequest)template.decode(new ByteArrayInputStream(data));
}
/**
* Create OCSP request from nickname of CA certificate and serial number
* of certificate to be checked.
*/
public OCSPRequest createRequest(String caNickname, BigInteger serialNumber)
throws Exception {
CryptoManager manager = CryptoManager.getInstance();
X509Certificate caCert = manager.findCertByNickname(caNickname);
X509CertImpl cert = new X509CertImpl(caCert.getEncoded());
X500Name issuerName = (X500Name)cert.getSubjectDN();
X509Key issuerKey = (X509Key)cert.getPublicKey();
return createRequest(issuerName, issuerKey, serialNumber);
}
/**
* Create OCSP request from issuer name, issuer public key, and serial number
* of certificate to be checked.
*/
public OCSPRequest createRequest(X500Name issuerName, X509Key issuerKey, BigInteger serialNumber)
throws Exception {
MessageDigest md = MessageDigest.getInstance("SHA");
// calculate hashes
byte issuerNameHash[] = md.digest(issuerName.getEncoded());
byte issuerKeyHash[] = md.digest(issuerKey.getKey());
// constructing the OCSP request
CertID certID = new CertID(
new AlgorithmIdentifier(
new OBJECT_IDENTIFIER("1.3.14.3.2.26"), new NULL()),
new OCTET_STRING(issuerNameHash),
new OCTET_STRING(issuerKeyHash),
new INTEGER(serialNumber));
Request request = new Request(certID, null);
SEQUENCE requestList = new SEQUENCE();
requestList.addElement(request);
TBSRequest tbsRequest = new TBSRequest(null, null, requestList, null);
return new OCSPRequest(tbsRequest, null);
}
public OCSPResponse submitRequest(String url, OCSPRequest request) throws Exception {
if (verbose) System.out.println("URL: " + url);
HttpClient httpClient = new DefaultHttpClient();
try {
ByteArrayOutputStream os = new ByteArrayOutputStream();
request.encode(os);
byte[] requestData = os.toByteArray();
if (verbose) {
System.out.println("Data Length: " + requestData.length);
System.out.println("Data: " + Utils.base64encode(requestData));
}
ByteArrayEntity requestEntity = new ByteArrayEntity(requestData);
requestEntity.setContentType(ContentType.APPLICATION_OCTET_STREAM.getMimeType());
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(requestEntity);
HttpResponse response = httpClient.execute(httpPost);
HttpEntity responseEntity = response.getEntity();
try (InputStream is = responseEntity.getContent()) {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int b;
while ((b = is.read()) != -1) {
buffer.write(b);
}
// construct OCSP response
return (OCSPResponse)OCSPResponse.getTemplate().decode(
new ByteArrayInputStream(buffer.toByteArray()));
} finally {
EntityUtils.consume(responseEntity);
}
} finally {
httpClient.getConnectionManager().shutdown();
}
}
}
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