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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 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.pnfsimulator.simulator.client.utils.ssl;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.TrustAllStrategy;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.ssl.SSLContexts;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.net.ssl.SSLContext;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.util.Optional;
public enum SslSupportLevel {
NONE {
public HttpClient getClient(RequestConfig requestConfig, SslAuthenticationHelper sslAuthenticationHelper) {
LOGGER.info("<!-----IN SslSupportLevel.NONE, Creating BasicHttpClient for http protocol----!>");
return HttpClientBuilder
.create()
.setDefaultRequestConfig(requestConfig)
.build();
}
},
ALWAYS_TRUST {
public HttpClient getClient(RequestConfig requestConfig, SslAuthenticationHelper sslAuthenticationHelper)
throws GeneralSecurityException, IOException {
LoggerFactory.getLogger(SslSupportLevel.class).info("<!-----IN SslSupportLevel.ALWAYS_TRUST, Creating client with SSL support for https protocol----!>");
HttpClient client;
try {
SSLContext alwaysTrustSslContext = SSLContextBuilder.create().loadTrustMaterial(TRUST_STRATEGY_ALWAYS).build();
client = HttpClients.custom()
.setSSLContext(alwaysTrustSslContext)
.setSSLHostnameVerifier(new NoopHostnameVerifier())
.setDefaultRequestConfig(requestConfig)
.build();
} catch (GeneralSecurityException e) {
String errorMessage =
String.format(
"Could not initialize client due to SSL exception: %s. " +
"Default client without SSL support will be used instead." +
"\nCause: %s",
e.getMessage(),
e.getCause()
);
LOGGER.error(errorMessage, e);
client = NONE.getClient(requestConfig, sslAuthenticationHelper);
}
return client;
}
},
CLIENT_CERT_AUTH {
@Override
public HttpClient getClient(RequestConfig requestConfig, SslAuthenticationHelper sslAuthenticationHelper)
throws GeneralSecurityException, IOException {
SSLContext sslContext = SSLContexts.custom()
.loadKeyMaterial(readCertificate(sslAuthenticationHelper.getClientCertificateDir(), sslAuthenticationHelper.getClientCertificatePassword(), "PKCS12"), getPasswordAsCharArray(sslAuthenticationHelper.getClientCertificatePassword()))
.loadTrustMaterial(readCertificate(sslAuthenticationHelper.getTrustStoreDir(), sslAuthenticationHelper.getTrustStorePassword(), "JKS"), new TrustSelfSignedStrategy())
.build();
return HttpClients.custom()
.setSSLContext(sslContext)
.setSSLHostnameVerifier(new NoopHostnameVerifier())
.setDefaultRequestConfig(requestConfig)
.build();
}
private KeyStore readCertificate(String certificate, String password, String type) throws GeneralSecurityException, IOException {
try (InputStream keyStoreStream = new FileInputStream(certificate)) {
KeyStore keyStore = KeyStore.getInstance(type);
keyStore.load(keyStoreStream, getPasswordAsCharArray(password));
return keyStore;
}
}
private char[] getPasswordAsCharArray(String clientCertificatePassword) {
return Optional.ofNullable(clientCertificatePassword).map(String::toCharArray).orElse(null);
}
};
private static final Logger LOGGER = LoggerFactory.getLogger(SslSupportLevel.class);
private static final TrustStrategy TRUST_STRATEGY_ALWAYS = new TrustAllStrategy();
public static SslSupportLevel getSupportLevelBasedOnProtocol(String url) throws MalformedURLException {
return "https".equals(new URL(url).getProtocol()) ? SslSupportLevel.ALWAYS_TRUST : SslSupportLevel.NONE;
}
public abstract HttpClient getClient(RequestConfig config, SslAuthenticationHelper sslAuthenticationHelper)
throws GeneralSecurityException, IOException;
}
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