1 files changed, 169 insertions, 0 deletions
diff --git a/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/utils/NodeTlsManager.java b/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/utils/NodeTlsManager.java
new file mode 100644
index 00000000..a32699d4
--- /dev/null
+++ b/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/utils/NodeTlsManager.java
@@ -0,0 +1,169 @@
+/*
+ * ============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;
+    }
+}