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.ics.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;
41 import javax.net.ssl.KeyManagerFactory;
43 import org.oransc.ics.configuration.WebClientConfig;
44 import org.oransc.ics.configuration.WebClientConfig.HttpProxyConfig;
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;
56 private final HttpProxyConfig httpProxyConfig;
58 public AsyncRestClientFactory(WebClientConfig clientConfig) {
59 if (clientConfig != null) {
60 this.sslContextFactory = new CachingSslContextFactory(clientConfig);
61 this.httpProxyConfig = clientConfig.httpProxyConfig();
63 logger.warn("No configuration for web client defined, HTTPS will not work");
64 this.sslContextFactory = null;
65 this.httpProxyConfig = null;
69 public AsyncRestClient createRestClientNoHttpProxy(String baseUrl) {
70 return createRestClient(baseUrl, false);
73 public AsyncRestClient createRestClientUseHttpProxy(String baseUrl) {
74 return createRestClient(baseUrl, true);
77 private AsyncRestClient createRestClient(String baseUrl, boolean useHttpProxy) {
78 if (this.sslContextFactory != null) {
80 return new AsyncRestClient(baseUrl, this.sslContextFactory.createSslContext(),
81 useHttpProxy ? httpProxyConfig : null);
82 } catch (Exception e) {
83 String exceptionString = e.toString();
84 logger.error("Could not init SSL context, reason: {}", exceptionString);
87 return new AsyncRestClient(baseUrl, null, httpProxyConfig);
90 private class SslContextFactory {
91 private final WebClientConfig clientConfig;
93 public SslContextFactory(WebClientConfig clientConfig) {
94 this.clientConfig = clientConfig;
97 public SslContext createSslContext() throws UnrecoverableKeyException, NoSuchAlgorithmException,
98 CertificateException, KeyStoreException, IOException {
99 return this.createSslContext(createKeyManager());
102 private SslContext createSslContext(KeyManagerFactory keyManager)
103 throws NoSuchAlgorithmException, CertificateException, KeyStoreException, IOException {
104 if (this.clientConfig.isTrustStoreUsed()) {
105 return createSslContextRejectingUntrustedPeers(this.clientConfig.trustStore(),
106 this.clientConfig.trustStorePassword(), keyManager);
109 return SslContextBuilder.forClient() //
110 .keyManager(keyManager) //
111 .trustManager(InsecureTrustManagerFactory.INSTANCE) //
116 private SslContext createSslContextRejectingUntrustedPeers(String trustStorePath, String trustStorePass,
117 KeyManagerFactory keyManager)
118 throws NoSuchAlgorithmException, CertificateException, IOException, KeyStoreException {
120 final KeyStore trustStore = getTrustStore(trustStorePath, trustStorePass);
121 List<Certificate> certificateList = Collections.list(trustStore.aliases()).stream() //
122 .filter(alias -> isCertificateEntry(trustStore, alias)) //
123 .map(alias -> getCertificate(trustStore, alias)) //
124 .collect(Collectors.toList());
125 final X509Certificate[] certificates = certificateList.toArray(new X509Certificate[certificateList.size()]);
127 return SslContextBuilder.forClient() //
128 .keyManager(keyManager) //
129 .trustManager(certificates) //
133 private boolean isCertificateEntry(KeyStore trustStore, String alias) {
135 return trustStore.isCertificateEntry(alias);
136 } catch (KeyStoreException e) {
137 logger.error("Error reading truststore {}", e.getMessage());
142 private Certificate getCertificate(KeyStore trustStore, String alias) {
144 return trustStore.getCertificate(alias);
145 } catch (KeyStoreException e) {
146 logger.error("Error reading truststore {}", e.getMessage());
151 private KeyManagerFactory createKeyManager() throws NoSuchAlgorithmException, CertificateException, IOException,
152 UnrecoverableKeyException, KeyStoreException {
153 final KeyManagerFactory keyManager = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
154 final KeyStore keyStore = KeyStore.getInstance(this.clientConfig.keyStoreType());
155 final String keyStoreFile = this.clientConfig.keyStore();
156 final String keyStorePassword = this.clientConfig.keyStorePassword();
157 final String keyPassword = this.clientConfig.keyPassword();
158 try (final InputStream inputStream = new FileInputStream(keyStoreFile)) {
159 keyStore.load(inputStream, keyStorePassword.toCharArray());
161 keyManager.init(keyStore, keyPassword.toCharArray());
165 private synchronized KeyStore getTrustStore(String trustStorePath, String trustStorePass)
166 throws NoSuchAlgorithmException, CertificateException, IOException, KeyStoreException {
168 KeyStore store = KeyStore.getInstance(KeyStore.getDefaultType());
169 store.load(new FileInputStream(ResourceUtils.getFile(trustStorePath)), trustStorePass.toCharArray());
174 public class CachingSslContextFactory extends SslContextFactory {
175 private SslContext cachedContext = null;
177 public CachingSslContextFactory(WebClientConfig clientConfig) {
182 public SslContext createSslContext() throws UnrecoverableKeyException, NoSuchAlgorithmException,
183 CertificateException, KeyStoreException, IOException {
184 if (this.cachedContext == null) {
185 this.cachedContext = super.createSslContext();
187 return this.cachedContext;