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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2022 Nordix Foundation.
* Modifications Copyright (C) 2023 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.gui.server.config;
import jakarta.annotation.PostConstruct;
import java.io.IOException;
import java.security.GeneralSecurityException;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import lombok.Setter;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
import org.apache.hc.client5.http.ssl.NoopHostnameVerifier;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactoryBuilder;
import org.apache.hc.client5.http.ssl.TrustAllStrategy;
import org.apache.hc.core5.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.Resource;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
public class BaseRestTemplateConfig {
private static final Logger LOG = LoggerFactory.getLogger(BaseRestTemplateConfig.class);
@Setter
private boolean disableSslValidation;
@Setter
private boolean disableSslHostnameCheck;
@Value("${server.ssl.trust-store:#{null}}")
protected Resource trustStore;
@Value("${server.ssl.trust-store-password:#{null}}")
protected char[] trustStorePassword;
@PostConstruct
private void validateProperties() {
if (trustStore == null && !disableSslValidation) {
throw new IllegalArgumentException("server.ssl.trust-store must be set if SSL validation is enabled");
}
if (disableSslValidation && !disableSslHostnameCheck) {
LOG.info("Disabling SSL hostname check as SSL validation is disabled");
disableSslHostnameCheck = true;
}
}
/**
* Returns a RestTemplate, optionally disabling SSL hostname check or disabling SSL validation entirely.
*/
protected RestTemplate getRestTemplate() throws GeneralSecurityException, IOException {
SSLContext sslContext;
if (disableSslValidation) {
sslContext = new SSLContextBuilder().loadTrustMaterial(new TrustAllStrategy()).build();
} else {
sslContext = new SSLContextBuilder().loadTrustMaterial(trustStore.getURL(), trustStorePassword).build();
}
HostnameVerifier hostnameVerifier;
if (disableSslHostnameCheck) {
hostnameVerifier = new NoopHostnameVerifier();
} else {
hostnameVerifier = SSLConnectionSocketFactory.getDefaultHostnameVerifier();
}
var csf = SSLConnectionSocketFactoryBuilder.create()
.setSslContext(sslContext).setHostnameVerifier(hostnameVerifier).build();
var httpClientBuilder = PoolingHttpClientConnectionManagerBuilder.create().setSSLSocketFactory(csf).build();
var httpClient = HttpClients.custom().setConnectionManager(httpClientBuilder).build();
var requestFactory = new HttpComponentsClientHttpRequestFactory();
requestFactory.setHttpClient(httpClient);
return new RestTemplate(requestFactory);
}
}
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