/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.synapse.transport.certificatevalidation;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.transport.certificatevalidation.crl.CRLCache;
import org.apache.synapse.transport.certificatevalidation.crl.CRLVerifier;
import org.apache.synapse.transport.certificatevalidation.ocsp.OCSPCache;
import org.apache.synapse.transport.certificatevalidation.ocsp.OCSPVerifier;
import org.apache.synapse.transport.certificatevalidation.pathvalidation.CertificatePathValidator;
import java.io.ByteArrayInputStream;
import java.security.cert.X509Certificate;
/**
* Manager class responsible for verifying certificates. This class will use the available verifiers according to
* a predefined policy.
*/
public class RevocationVerificationManager {
private int cacheSize = Constants.CACHE_DEFAULT_ALLOCATED_SIZE;
private int cacheDelayMins = Constants.CACHE_DEFAULT_DELAY_MINS;
private static final Log log = LogFactory.getLog(RevocationVerificationManager.class);
public RevocationVerificationManager(Integer cacheAllocatedSize, Integer cacheDelayMins) {
if (cacheAllocatedSize != null && cacheAllocatedSize > Constants.CACHE_MIN_ALLOCATED_SIZE
&& cacheAllocatedSize < Constants.CACHE_MAX_ALLOCATED_SIZE) {
this.cacheSize = cacheAllocatedSize;
}
if (cacheDelayMins != null && cacheDelayMins > Constants.CACHE_MIN_DELAY_MINS
&& cacheDelayMins < Constants.CACHE_MAX_DELAY_MINS) {
this.cacheDelayMins = cacheDelayMins;
}
}
/**
* This method first tries to verify the given certificate chain using OCSP since OCSP verification is
* faster. If that fails it tries to do the verification using CRL.
* @param peerCertificates javax.security.cert.X509Certificate[] array of peer certificate chain from peer/client.
* @throws CertificateVerificationException
*/
public void verifyRevocationStatus(javax.security.cert.X509Certificate[] peerCertificates)
throws CertificateVerificationException {
X509Certificate[] convertedCertificates = convert(peerCertificates);
long start = System.currentTimeMillis();
OCSPCache ocspCache = OCSPCache.getCache();
ocspCache.init(cacheSize, cacheDelayMins);
CRLCache crlCache = CRLCache.getCache();
crlCache.init(cacheSize, cacheDelayMins);
RevocationVerifier[] verifiers = {new OCSPVerifier(ocspCache), new CRLVerifier(crlCache)};
for (RevocationVerifier verifier : verifiers) {
try {
CertificatePathValidator pathValidator = new CertificatePathValidator(convertedCertificates, verifier);
pathValidator.validatePath();
log.info("Path verification Successful. Took " + (System.currentTimeMillis() - start) + " ms.");
return;
} catch (Exception e) {
log.info(verifier.getClass().getSimpleName() + " failed.");
log.debug("Certificate verification with " + verifier.getClass().getSimpleName() + " failed. ", e);
}
}
throw new CertificateVerificationException("Path Verification Failed for both OCSP and CRL");
}
/**
* @param certs array of javax.security.cert.X509Certificate[] s.
* @return the converted array of java.security.cert.X509Certificate[] s.
* @throws CertificateVerificationException
*/
private X509Certificate[] convert(javax.security.cert.X509Certificate[] certs)
throws CertificateVerificationException {
X509Certificate[] certChain = new X509Certificate[certs.length];
Throwable exceptionThrown;
for (int i = 0; i < certs.length; i++) {
try {
byte[] encoded = certs[i].getEncoded();
ByteArrayInputStream bis = new ByteArrayInputStream(encoded);
java.security.cert.CertificateFactory cf
= java.security.cert.CertificateFactory.getInstance("X.509");
certChain[i]=((X509Certificate)cf.generateCertificate(bis));
continue;
} catch (java.security.cert.CertificateEncodingException e) {
exceptionThrown = e;
} catch (javax.security.cert.CertificateEncodingException e) {
exceptionThrown = e;
} catch (java.security.cert.CertificateException e) {
exceptionThrown = e;
}
throw new CertificateVerificationException("Cant Convert certificates from javax to java", exceptionThrown);
}
return certChain;
}
}