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/*-
* ============LICENSE_START======================================================================
* Copyright (C) 2021 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.
* ============LICENSE_END========================================================================
*/
package org.onap.dcaegen2.collectors.datafile.http;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.ssl.DefaultHostnameVerifier;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.ssl.SSLContexts;
import org.onap.dcaegen2.collectors.datafile.commons.SecurityUtil;
import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.FileSystemResource;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Paths;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
/**
* Utility class supplying connection manager for HTTPS protocol.
*
* @author <a href="mailto:krzysztof.gajewski@nokia.com">Krzysztof Gajewski</a>
*/
public class HttpsClientConnectionManagerUtil {
private HttpsClientConnectionManagerUtil() {
}
private static final Logger logger = LoggerFactory.getLogger(HttpsClientConnectionManagerUtil.class);
//Be aware to be less than ScheduledTasks.NUMBER_OF_WORKER_THREADS
private static final int MAX_NUMBER_OF_CONNECTIONS = 200;
private static PoolingHttpClientConnectionManager connectionManager;
public static PoolingHttpClientConnectionManager instance() throws DatafileTaskException {
if (connectionManager == null) {
throw new DatafileTaskException("ConnectionManager has to be set or update first");
}
return connectionManager;
}
public static void setupOrUpdate(String keyCertPath, String keyCertPasswordPath, String trustedCaPath,
String trustedCaPasswordPath, Boolean useHostnameVerifier) throws DatafileTaskException {
synchronized (HttpsClientConnectionManagerUtil.class) {
if (connectionManager != null) {
connectionManager.close();
connectionManager = null;
}
setup(keyCertPath, keyCertPasswordPath, trustedCaPath, trustedCaPasswordPath, useHostnameVerifier);
}
logger.trace("HttpsConnectionManager setup or updated");
}
private static void setup(String keyCertPath, String keyCertPasswordPath, String trustedCaPath,
String trustedCaPasswordPath, Boolean useHostnameVerifier) throws DatafileTaskException {
try {
SSLContextBuilder sslBuilder = SSLContexts.custom();
sslBuilder = supplyKeyInfo(keyCertPath, keyCertPasswordPath, sslBuilder);
sslBuilder = supplyTrustInfo(trustedCaPath, trustedCaPasswordPath, sslBuilder);
SSLContext sslContext = sslBuilder.build();
HostnameVerifier hostnameVerifier = (Boolean.TRUE.equals(useHostnameVerifier)) ? new DefaultHostnameVerifier() :
NoopHostnameVerifier.INSTANCE;
SSLConnectionSocketFactory sslConnectionSocketFactory =
new SSLConnectionSocketFactory(sslContext, new String[] {"TLSv1.2"}, null,
hostnameVerifier);
Registry<ConnectionSocketFactory> socketFactoryRegistry =
RegistryBuilder.<ConnectionSocketFactory>create().register("https", sslConnectionSocketFactory)
.build();
connectionManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
connectionManager.setMaxTotal(MAX_NUMBER_OF_CONNECTIONS);
} catch (Exception e) {
throw new DatafileTaskException("Unable to prepare HttpsConnectionManager : ", e);
}
}
private static SSLContextBuilder supplyKeyInfo(String keyCertPath, String keyCertPasswordPath,
SSLContextBuilder sslBuilder)
throws IOException, KeyStoreException, NoSuchAlgorithmException, CertificateException,
UnrecoverableKeyException {
String keyPass = SecurityUtil.getKeystorePasswordFromFile(keyCertPasswordPath);
KeyStore keyFile = createKeyStore(keyCertPath, keyPass);
return sslBuilder.loadKeyMaterial(keyFile, keyPass.toCharArray());
}
private static KeyStore createKeyStore(String trustedCaPath, String trustedCaPassword)
throws IOException, KeyStoreException, NoSuchAlgorithmException, CertificateException {
logger.trace("Creating trust manager from file: {}", trustedCaPath);
try (InputStream fis = createInputStream(trustedCaPath)) {
KeyStore keyStore = KeyStore.getInstance("PKCS12");
keyStore.load(fis, trustedCaPassword.toCharArray());
return keyStore;
}
}
private static InputStream createInputStream(String localFileName) throws IOException {
FileSystemResource realResource = new FileSystemResource(Paths.get(localFileName));
return realResource.getInputStream();
}
private static SSLContextBuilder supplyTrustInfo(String trustedCaPath, String trustedCaPasswordPath,
SSLContextBuilder sslBuilder)
throws NoSuchAlgorithmException, KeyStoreException, CertificateException, IOException {
String trustPass = SecurityUtil.getTruststorePasswordFromFile(trustedCaPasswordPath);
File trustStoreFile = new File(trustedCaPath);
return sslBuilder.loadTrustMaterial(trustStoreFile, trustPass.toCharArray());
}
}
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