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/*-
* ============LICENSE_START=======================================================
* sdc-distribution-client
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* Modifications copyright (C) 2020 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.sdc.http;
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 javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.ssl.SSLContextBuilder;
import org.onap.sdc.api.consumer.IConfiguration;
import org.onap.sdc.utils.Pair;
public class HttpClientFactory {
private static final int AUTHORIZATION_SCOPE_PLAIN_PORT = 80;
private static final int AUTHORIZATION_SCOPE_PORT = 443;
private static final KeyStore DEFAULT_INIT_KEY_STORE_VALUE = null;
private static final String TLS = "TLSv1.2";
static final String HTTP = "http://";
static final String HTTPS = "https://";
private final IConfiguration configuration;
public HttpClientFactory(IConfiguration configuration) {
this.configuration = configuration;
}
public Pair<String, CloseableHttpClient> createInstance() {
boolean isHttpsRequired = configuration.isUseHttpsWithSDC();
Pair<String, CloseableHttpClient> httpClientPair;
if (isHttpsRequired) {
httpClientPair = createHttpsClient(configuration);
} else {
httpClientPair = createHttpClient(configuration);
}
return httpClientPair;
}
private Pair<String, CloseableHttpClient> createHttpsClient(IConfiguration configuration) {
return new Pair<>(HTTPS,
initSSL(configuration.getUser(), configuration.getPassword(), configuration.getKeyStorePath(),
configuration.getKeyStorePassword(), configuration.activateServerTLSAuth()));
}
private Pair<String, CloseableHttpClient> createHttpClient(IConfiguration configuration) {
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(new AuthScope("localhost", AUTHORIZATION_SCOPE_PLAIN_PORT),
new UsernamePasswordCredentials(configuration.getUser(), configuration.getPassword()));
return new Pair<>(HTTP, HttpClientBuilder.create().setDefaultCredentialsProvider(credsProvider)
.setProxy(getHttpProxyHost()).build());
}
private CloseableHttpClient initSSL(String username, String password, String keyStorePath, String keyStorePass,
boolean isSupportSSLVerification) {
try {
// SSLContextBuilder is not thread safe
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(new AuthScope("localhost", AUTHORIZATION_SCOPE_PORT),
new UsernamePasswordCredentials(username, password));
SSLContext sslContext;
sslContext = SSLContext.getInstance(TLS);
TrustManagerFactory tmf = createTrustManagerFactory();
TrustManager[] tms = tmf.getTrustManagers();
if (isSupportSSLVerification) {
if (keyStorePath != null && !keyStorePath.isEmpty()) {
// Using null here initialises the TMF with the default
// trust store.
// Get hold of the default trust manager
X509TrustManager defaultTm = null;
for (TrustManager tm : tmf.getTrustManagers()) {
if (tm instanceof X509TrustManager) {
defaultTm = (X509TrustManager) tm;
break;
}
}
// Do the same with your trust store this time
// Adapt how you load the keystore to your needs
KeyStore trustStore = loadKeyStore(keyStorePath, keyStorePass);
tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(trustStore);
// Get hold of the default trust manager
X509TrustManager myTm = null;
for (TrustManager tm : tmf.getTrustManagers()) {
if (tm instanceof X509TrustManager) {
myTm = (X509TrustManager) tm;
break;
}
}
// Wrap it in your own class.
final X509TrustManager finalDefaultTm = defaultTm;
final X509TrustManager finalMyTm = myTm;
X509TrustManager customTm = new X509TrustManager() {
@Override
public X509Certificate[] getAcceptedIssuers() {
// If you're planning to use client-cert auth,
// merge results from "defaultTm" and "myTm".
return finalDefaultTm.getAcceptedIssuers();
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
try {
finalMyTm.checkServerTrusted(chain, authType);
} catch (CertificateException e) {
// This will throw another CertificateException
// if this fails too.
finalDefaultTm.checkServerTrusted(chain, authType);
}
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
// If you're planning to use client-cert auth,
// do the same as checking the server.
finalDefaultTm.checkClientTrusted(chain, authType);
}
};
tms = new TrustManager[] { customTm };
}
sslContext.init(null, tms, null);
SSLContext.setDefault(sslContext);
} else {
SSLContextBuilder builder = new SSLContextBuilder();
builder.loadTrustMaterial(null, (chain, authType) -> true);
sslContext = builder.build();
}
HostnameVerifier hostnameVerifier = (hostname, session) -> hostname.equalsIgnoreCase(session.getPeerHost());
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new String[] { TLS }, null,
hostnameVerifier);
return HttpClientBuilder.create().setDefaultCredentialsProvider(credsProvider).setProxy(getHttpsProxyHost())
.setSSLSocketFactory(sslsf).build();
} catch (Exception e) {
throw new HttpSdcClientException("Failed to create https client", e);
}
}
private TrustManagerFactory createTrustManagerFactory() throws NoSuchAlgorithmException, KeyStoreException {
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(DEFAULT_INIT_KEY_STORE_VALUE);
return tmf;
}
private KeyStore loadKeyStore(String keyStorePath, String keyStorePass)
throws KeyStoreException, IOException, NoSuchAlgorithmException, CertificateException {
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
try (FileInputStream keyStoreData = new FileInputStream(keyStorePath)) {
trustStore.load(keyStoreData, keyStorePass.toCharArray());
}
return trustStore;
}
private HttpHost getHttpProxyHost() {
HttpHost proxyHost = null;
if (configuration.isUseSystemProxy() && System.getProperty("http.proxyHost") != null
&& System.getProperty("http.proxyPort") != null) {
proxyHost = new HttpHost(System.getProperty("http.proxyHost"),
Integer.valueOf(System.getProperty("http.proxyPort")));
} else if (configuration.getHttpProxyHost() != null && configuration.getHttpProxyPort() != 0) {
proxyHost = new HttpHost(configuration.getHttpProxyHost(), configuration.getHttpProxyPort());
}
return proxyHost;
}
private HttpHost getHttpsProxyHost() {
HttpHost proxyHost = null;
if (configuration.isUseSystemProxy() && System.getProperty("https.proxyHost") != null
&& System.getProperty("https.proxyPort") != null) {
proxyHost = new HttpHost(System.getProperty("https.proxyHost"),
Integer.valueOf(System.getProperty("https.proxyPort")));
} else if (configuration.getHttpsProxyHost() != null && configuration.getHttpsProxyPort() != 0) {
proxyHost = new HttpHost(configuration.getHttpsProxyHost(), configuration.getHttpsProxyPort());
}
return proxyHost;
}
}
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