2 * ========================LICENSE_START=================================
5 * Copyright (C) 2020 Nordix Foundation
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================LICENSE_END===================================
21 package org.oransc.enrichment.clients;
23 import io.netty.handler.ssl.SslContext;
24 import io.netty.handler.ssl.SslContextBuilder;
25 import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
27 import java.io.FileInputStream;
28 import java.io.IOException;
29 import java.io.InputStream;
30 import java.lang.invoke.MethodHandles;
31 import java.security.KeyStore;
32 import java.security.KeyStoreException;
33 import java.security.NoSuchAlgorithmException;
34 import java.security.UnrecoverableKeyException;
35 import java.security.cert.Certificate;
36 import java.security.cert.CertificateException;
37 import java.security.cert.X509Certificate;
38 import java.util.Collections;
39 import java.util.List;
40 import java.util.stream.Collectors;
42 import javax.net.ssl.KeyManagerFactory;
44 import org.oransc.enrichment.configuration.WebClientConfig;
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
47 import org.springframework.util.ResourceUtils;
50 * Factory for a generic reactive REST client.
52 public class AsyncRestClientFactory {
53 private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
55 private final SslContextFactory sslContextFactory;
57 public AsyncRestClientFactory(WebClientConfig clientConfig) {
58 if (clientConfig != null) {
59 this.sslContextFactory = new CachingSslContextFactory(clientConfig);
61 this.sslContextFactory = null;
65 public AsyncRestClient createRestClient(String baseUrl) {
66 if (this.sslContextFactory != null) {
68 return new AsyncRestClient(baseUrl, this.sslContextFactory.createSslContext());
69 } catch (Exception e) {
70 String exceptionString = e.toString();
71 logger.error("Could not init SSL context, reason: {}", exceptionString);
74 return new AsyncRestClient(baseUrl);
77 private class SslContextFactory {
78 private final WebClientConfig clientConfig;
80 public SslContextFactory(WebClientConfig clientConfig) {
81 this.clientConfig = clientConfig;
84 public SslContext createSslContext() throws UnrecoverableKeyException, NoSuchAlgorithmException,
85 CertificateException, KeyStoreException, IOException {
86 return this.createSslContext(createKeyManager());
89 private SslContext createSslContext(KeyManagerFactory keyManager)
90 throws NoSuchAlgorithmException, CertificateException, KeyStoreException, IOException {
91 if (this.clientConfig.isTrustStoreUsed()) {
92 return createSslContextRejectingUntrustedPeers(this.clientConfig.trustStore(),
93 this.clientConfig.trustStorePassword(), keyManager);
96 return SslContextBuilder.forClient() //
97 .keyManager(keyManager) //
98 .trustManager(InsecureTrustManagerFactory.INSTANCE) //
103 private SslContext createSslContextRejectingUntrustedPeers(String trustStorePath, String trustStorePass,
104 KeyManagerFactory keyManager)
105 throws NoSuchAlgorithmException, CertificateException, IOException, KeyStoreException {
107 final KeyStore trustStore = getTrustStore(trustStorePath, trustStorePass);
108 List<Certificate> certificateList = Collections.list(trustStore.aliases()).stream() //
109 .filter(alias -> isCertificateEntry(trustStore, alias)) //
110 .map(alias -> getCertificate(trustStore, alias)) //
111 .collect(Collectors.toList());
112 final X509Certificate[] certificates = certificateList.toArray(new X509Certificate[certificateList.size()]);
114 return SslContextBuilder.forClient() //
115 .keyManager(keyManager) //
116 .trustManager(certificates) //
120 private boolean isCertificateEntry(KeyStore trustStore, String alias) {
122 return trustStore.isCertificateEntry(alias);
123 } catch (KeyStoreException e) {
124 logger.error("Error reading truststore {}", e.getMessage());
129 private Certificate getCertificate(KeyStore trustStore, String alias) {
131 return trustStore.getCertificate(alias);
132 } catch (KeyStoreException e) {
133 logger.error("Error reading truststore {}", e.getMessage());
138 private KeyManagerFactory createKeyManager() throws NoSuchAlgorithmException, CertificateException, IOException,
139 UnrecoverableKeyException, KeyStoreException {
140 final KeyManagerFactory keyManager = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
141 final KeyStore keyStore = KeyStore.getInstance(this.clientConfig.keyStoreType());
142 final String keyStoreFile = this.clientConfig.keyStore();
143 final String keyStorePassword = this.clientConfig.keyStorePassword();
144 final String keyPassword = this.clientConfig.keyPassword();
145 try (final InputStream inputStream = new FileInputStream(keyStoreFile)) {
146 keyStore.load(inputStream, keyStorePassword.toCharArray());
148 keyManager.init(keyStore, keyPassword.toCharArray());
152 private synchronized KeyStore getTrustStore(String trustStorePath, String trustStorePass)
153 throws NoSuchAlgorithmException, CertificateException, IOException, KeyStoreException {
155 KeyStore store = KeyStore.getInstance(KeyStore.getDefaultType());
156 store.load(new FileInputStream(ResourceUtils.getFile(trustStorePath)), trustStorePass.toCharArray());
161 public class CachingSslContextFactory extends SslContextFactory {
162 private SslContext cachedContext = null;
164 public CachingSslContextFactory(WebClientConfig clientConfig) {
169 public SslContext createSslContext() throws UnrecoverableKeyException, NoSuchAlgorithmException,
170 CertificateException, KeyStoreException, IOException {
171 if (this.cachedContext == null) {
172 this.cachedContext = super.createSslContext();
174 return this.cachedContext;