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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2022 Nordix Foundation.
* ================================================================================
* Licensed 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.dmaap.datarouter.node.utils;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Enumeration;
import java.util.Properties;
import javax.naming.InvalidNameException;
import javax.naming.ldap.LdapName;
import javax.naming.ldap.Rdn;
import org.onap.dmaap.datarouter.node.eelf.EelfMsgs;
public class NodeTlsManager {
private static final EELFLogger eelfLogger = EELFManager.getInstance().getLogger(NodeTlsManager.class);
private String keyStoreType;
private String keyStorefile;
private String keyStorePassword;
private String keyManagerPassword;
private final String[] enabledProtocols;
public NodeTlsManager(Properties properties) {
enabledProtocols = properties.getProperty("NodeHttpsProtocols",
"TLSv1.1|TLSv1.2").trim().split("\\|");
setUpKeyStore(properties);
setUpTrustStore(properties);
}
private void setUpKeyStore(Properties properties) {
keyStoreType = properties.getProperty("KeyStoreType", "PKCS12");
keyStorefile = properties.getProperty("KeyStorePath");
keyStorePassword = properties.getProperty("KeyStorePass");
keyManagerPassword = properties.getProperty("KeyManagerPass");
}
private void setUpTrustStore(Properties properties) {
String trustStoreType = properties.getProperty("TrustStoreType", "jks");
String trustStoreFile = properties.getProperty("TrustStorePath");
String trustStorePassword = properties.getProperty("TrustStorePass");
if (trustStoreFile != null && trustStoreFile.length() > 0) {
eelfLogger.info("TrustStore found. Loading {} file {} to System Properties.", trustStoreType, trustStoreFile);
System.setProperty("javax.net.ssl.trustStoreType", trustStoreType);
System.setProperty("javax.net.ssl.trustStore", trustStoreFile);
System.setProperty("javax.net.ssl.trustStorePassword", trustStorePassword);
return;
}
eelfLogger.error("TrustStore not found. Falling back to 1 way TLS");
}
public String getKeyStoreType() {
return keyStoreType;
}
public String getKeyStorefile() {
return keyStorefile;
}
public String getKeyStorePassword() {
return keyStorePassword;
}
public String getKeyManagerPassword() {
return keyManagerPassword;
}
public String[] getEnabledProtocols() {
return enabledProtocols;
}
/**
* Get the CN value of the first private key entry with a certificate.
*
* @return CN of the certificate subject or null
*/
public String getMyNameFromCertificate() {
return getCanonicalName(this.keyStoreType, this.keyStorefile, this.keyStorePassword);
}
private String getCanonicalName(String kstype, String ksfile, String kspass) {
KeyStore ks;
try {
ks = KeyStore.getInstance(kstype);
if (loadKeyStore(ksfile, kspass, ks)) {
return (null);
}
} catch (Exception e) {
NodeUtils.setIpAndFqdnForEelf("getCanonicalName");
eelfLogger.error(EelfMsgs.MESSAGE_KEYSTORE_LOAD_ERROR, e, ksfile);
return (null);
}
return (getCanonicalName(ks));
}
private String getCanonicalName(KeyStore ks) {
try {
Enumeration<String> aliases = ks.aliases();
while (aliases.hasMoreElements()) {
String name = getNameFromSubject(ks, aliases);
if (name != null) {
return name;
}
}
} catch (Exception e) {
eelfLogger.error("NODE0402 Error extracting my name from my keystore file " + e);
}
return (null);
}
private boolean loadKeyStore(String ksfile, String kspass, KeyStore ks)
throws NoSuchAlgorithmException, CertificateException {
try (FileInputStream fileInputStream = new FileInputStream(ksfile)) {
ks.load(fileInputStream, kspass.toCharArray());
} catch (IOException ioException) {
eelfLogger.error("IOException occurred while opening FileInputStream: " + ioException.getMessage(),
ioException);
return true;
}
return false;
}
private String getNameFromSubject(KeyStore ks, Enumeration<String> aliases) throws KeyStoreException {
String alias = aliases.nextElement();
String nameFromSubject = null;
if (ks.entryInstanceOf(alias, KeyStore.PrivateKeyEntry.class)) {
X509Certificate cert = (X509Certificate) ks.getCertificate(alias);
if (cert != null) {
String subject = cert.getSubjectX500Principal().getName();
try {
LdapName ln = new LdapName(subject);
for (Rdn rdn : ln.getRdns()) {
if (rdn.getType().equalsIgnoreCase("CN")) {
nameFromSubject = rdn.getValue().toString();
}
}
} catch (InvalidNameException e) {
eelfLogger.error("No valid CN not found for dr-node cert", e);
}
}
}
return nameFromSubject;
}
}
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