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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019-2020 Nordix Foundation.
* Copyright (C) 2021 Samsung Electronics.
* Copyright (C) 2022 Nokia. All rights reserved.
* ================================================================================
* 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.dcaegen2.services.pmmapper.ssl;
import org.onap.dcaegen2.services.pmmapper.exceptions.CreateContextException;
import org.onap.dcaegen2.services.pmmapper.exceptions.KeyManagerException;
import org.onap.dcaegen2.services.pmmapper.exceptions.LoadKeyStoreException;
import org.onap.dcaegen2.services.pmmapper.exceptions.MapperConfigException;
import org.onap.dcaegen2.services.pmmapper.exceptions.TrustManagerException;
import org.onap.dcaegen2.services.pmmapper.model.MapperConfig;
import org.onap.logging.ref.slf4j.ONAPLogAdapter;
import org.slf4j.LoggerFactory;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Paths;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import static java.nio.file.Files.readAllBytes;
public class SSLContextFactory {
private static final ONAPLogAdapter logger = new ONAPLogAdapter(LoggerFactory.getLogger(SSLContextFactory.class));
private final MapperConfig mapperConfig;
public SSLContextFactory(MapperConfig config) {
mapperConfig = config;
}
public SSLContext createSSLContext(MapperConfig mapperConfig) throws IOException {
logger.unwrap().info("Attempt to Create SSL Context");
if (isSslDisabled(mapperConfig)) {
logger.unwrap().warn("SSL is disabled. Skip creating SSL Context");
return null;
}
try {
KeyStore keyStore = loadKeyStore(mapperConfig.getKeyStorePath(), mapperConfig.getKeyStorePassPath());
KeyManager[] keyManagers = createKeyManager(keyStore);
KeyStore trustStore = loadKeyStore(mapperConfig.getTrustStorePath(), mapperConfig.getTrustStorePassPath());
TrustManager[] trustManagers = createTrustManager(trustStore);
SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
sslContext.init(keyManagers, trustManagers, null);
return sslContext;
} catch(KeyManagementException | NoSuchAlgorithmException e) {
logger.unwrap().error("Failed to create SSL Context.", e);
throw new CreateContextException("Failed to create SSL Context", e);
}
}
private boolean isSslDisabled(MapperConfig mapperConfig) {
boolean isCertPathMissing = !areCertPathsConfigured(mapperConfig);
if (isCertPathMissing && !mapperConfig.getEnableHttp()) {
throw new MapperConfigException("Certificate paths are missing, HTTP is disabled. Not allowed configuration");
}
return isCertPathMissing;
}
private boolean areCertPathsConfigured(MapperConfig mapperConfig) {
return isNotBlank(mapperConfig.getKeyStorePath()) &&
isNotBlank(mapperConfig.getKeyStorePassPath()) &&
isNotBlank(mapperConfig.getTrustStorePath()) &&
isNotBlank(mapperConfig.getTrustStorePassPath());
}
private boolean isNotBlank(String str) {
return str != null && !str.isEmpty();
}
private KeyManager[] createKeyManager(KeyStore keyStore) throws NoSuchAlgorithmException, IOException {
KeyManager[] keyManager;
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
try {
keyManagerFactory.init(keyStore, getPassword(mapperConfig.getKeyStorePassPath()).toCharArray());
} catch (KeyStoreException | UnrecoverableKeyException e) {
logger.unwrap().error("Failed to initialize keystore.", e);
throw new KeyManagerException("Failed to create KeyManager from Keystore", e);
}
keyManager = keyManagerFactory.getKeyManagers();
return keyManager;
}
private TrustManager[] createTrustManager(KeyStore trustStore) throws NoSuchAlgorithmException {
TrustManager[] trustManagers;
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
try {
trustManagerFactory.init(trustStore);
} catch (KeyStoreException e) {
throw new TrustManagerException("Failed to create TrustManager from Truststore", e);
}
trustManagers = trustManagerFactory.getTrustManagers();
return trustManagers;
}
private KeyStore loadKeyStore(String path, String passwordPath) throws IOException, NoSuchAlgorithmException {
String type = "JKS";
String password = getPassword(passwordPath);
KeyStore keyStore;
try {
keyStore = KeyStore.getInstance(type);
byte[] keystoreBytes = readAllBytes(Paths.get(path));
InputStream stream = new ByteArrayInputStream(keystoreBytes);
keyStore.load(stream, password.toCharArray());
} catch(KeyStoreException | CertificateException e) {
logger.unwrap().error("Failed to load Keystore from given configuration.", e);
throw new LoadKeyStoreException("Failed to load Keystore from given configuration", e);
}
return keyStore;
}
private String getPassword(String passwordPath) throws IOException {
try {
String password = new String(readAllBytes(Paths.get(passwordPath)));
password = password.replace("\n", "").replace("\r", "");
return password;
} catch (IOException e) {
logger.unwrap().error("Could not read password from: {}.", passwordPath, e);
throw new IOException("Password not found");
}
}
}
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