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Camunda 7 Keycloak Identity Provider Plugin for Camunda Platform 7 Run
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* keymanagers;
private final Set trustmanagers;
private SecureRandom secureRandom;
public SSLContextBuilder() {
super();
this.keymanagers = new LinkedHashSet();
this.trustmanagers = new LinkedHashSet();
}
public SSLContextBuilder useTLS() {
this.protocol = TLS;
return this;
}
public SSLContextBuilder useSSL() {
this.protocol = SSL;
return this;
}
public SSLContextBuilder useProtocol(final String protocol) {
this.protocol = protocol;
return this;
}
public SSLContextBuilder setSecureRandom(final SecureRandom secureRandom) {
this.secureRandom = secureRandom;
return this;
}
public SSLContextBuilder loadTrustMaterial(
final KeyStore truststore,
final TrustStrategy trustStrategy) throws NoSuchAlgorithmException, KeyStoreException {
final TrustManagerFactory tmfactory = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
tmfactory.init(truststore);
final TrustManager[] tms = tmfactory.getTrustManagers();
if (tms != null) {
if (trustStrategy != null) {
for (int i = 0; i < tms.length; i++) {
final TrustManager tm = tms[i];
if (tm instanceof X509TrustManager) {
tms[i] = new TrustManagerDelegate(
(X509TrustManager) tm, trustStrategy);
}
}
}
Collections.addAll(this.trustmanagers, tms);
}
return this;
}
public SSLContextBuilder loadTrustMaterial(
final KeyStore truststore) throws NoSuchAlgorithmException, KeyStoreException {
return loadTrustMaterial(truststore, null);
}
public SSLContextBuilder loadKeyMaterial(
final KeyStore keystore,
final char[] keyPassword)
throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException {
loadKeyMaterial(keystore, keyPassword, null);
return this;
}
public SSLContextBuilder loadKeyMaterial(
final KeyStore keystore,
final char[] keyPassword,
final PrivateKeyStrategy aliasStrategy)
throws NoSuchAlgorithmException, KeyStoreException, UnrecoverableKeyException {
final KeyManagerFactory kmfactory = KeyManagerFactory.getInstance(
KeyManagerFactory.getDefaultAlgorithm());
kmfactory.init(keystore, keyPassword);
final KeyManager[] kms = kmfactory.getKeyManagers();
if (kms != null) {
if (aliasStrategy != null) {
for (int i = 0; i < kms.length; i++) {
final KeyManager km = kms[i];
if (km instanceof X509KeyManager) {
kms[i] = new KeyManagerDelegate(
(X509KeyManager) km, aliasStrategy);
}
}
}
Collections.addAll(keymanagers, kms);
}
return this;
}
public SSLContext build() throws NoSuchAlgorithmException, KeyManagementException {
final SSLContext sslcontext = SSLContext.getInstance(
this.protocol != null ? this.protocol : TLS);
sslcontext.init(
!keymanagers.isEmpty() ? keymanagers.toArray(new KeyManager[keymanagers.size()]) : null,
!trustmanagers.isEmpty() ? trustmanagers.toArray(new TrustManager[trustmanagers.size()]) : null,
secureRandom);
return sslcontext;
}
static class TrustManagerDelegate implements X509TrustManager {
private final X509TrustManager trustManager;
private final TrustStrategy trustStrategy;
TrustManagerDelegate(final X509TrustManager trustManager, final TrustStrategy trustStrategy) {
super();
this.trustManager = trustManager;
this.trustStrategy = trustStrategy;
}
@Override
public void checkClientTrusted(
final X509Certificate[] chain, final String authType) throws CertificateException {
this.trustManager.checkClientTrusted(chain, authType);
}
@Override
public void checkServerTrusted(
final X509Certificate[] chain, final String authType) throws CertificateException {
if (!this.trustStrategy.isTrusted(chain, authType)) {
this.trustManager.checkServerTrusted(chain, authType);
}
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return this.trustManager.getAcceptedIssuers();
}
}
static class KeyManagerDelegate implements X509KeyManager {
private final X509KeyManager keyManager;
private final PrivateKeyStrategy aliasStrategy;
KeyManagerDelegate(final X509KeyManager keyManager, final PrivateKeyStrategy aliasStrategy) {
super();
this.keyManager = keyManager;
this.aliasStrategy = aliasStrategy;
}
@Override
public String[] getClientAliases(
final String keyType, final Principal[] issuers) {
return this.keyManager.getClientAliases(keyType, issuers);
}
@Override
public String chooseClientAlias(
final String[] keyTypes, final Principal[] issuers, final Socket socket) {
final Map validAliases = new HashMap();
for (final String keyType: keyTypes) {
final String[] aliases = this.keyManager.getClientAliases(keyType, issuers);
if (aliases != null) {
for (final String alias: aliases) {
validAliases.put(alias,
new PrivateKeyDetails(keyType, this.keyManager.getCertificateChain(alias)));
}
}
}
return this.aliasStrategy.chooseAlias(validAliases, socket);
}
@Override
public String[] getServerAliases(
final String keyType, final Principal[] issuers) {
return this.keyManager.getServerAliases(keyType, issuers);
}
@Override
public String chooseServerAlias(
final String keyType, final Principal[] issuers, final Socket socket) {
final Map validAliases = new HashMap();
final String[] aliases = this.keyManager.getServerAliases(keyType, issuers);
if (aliases != null) {
for (final String alias: aliases) {
validAliases.put(alias,
new PrivateKeyDetails(keyType, this.keyManager.getCertificateChain(alias)));
}
}
return this.aliasStrategy.chooseAlias(validAliases, socket);
}
@Override
public X509Certificate[] getCertificateChain(final String alias) {
return this.keyManager.getCertificateChain(alias);
}
@Override
public PrivateKey getPrivateKey(final String alias) {
return this.keyManager.getPrivateKey(alias);
}
}
}
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