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/*******************************************************************************
* ============LICENSE_START========================================================================
* ONAP : ccsdk feature sdnr wt
* =================================================================================================
* Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. 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.ccsdk.features.sdnr.wt.apigateway.database.http;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;
import java.util.Map;
import javax.annotation.Nonnull;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.KeyManager;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class BaseHTTPClient {
private static Logger LOG = LoggerFactory.getLogger(BaseHTTPClient.class);
private static final int BUFSIZE = 1024;
private static final Charset CHARSET = StandardCharsets.UTF_8;
private static final String SSLCONTEXT = "TLSv1.2";
private static final int DEFAULT_HTTP_TIMEOUT_MS = 30000; // in ms
private final boolean trustAll;
private final String baseUrl;
private int timeout = DEFAULT_HTTP_TIMEOUT_MS;
private SSLContext sc = null;
public BaseHTTPClient(String base) {
this(base, false);
}
public BaseHTTPClient(String base, boolean trustAllCerts) {
this.baseUrl = base;
this.trustAll = trustAllCerts;
try {
sc = setupSsl(trustAll);
} catch (KeyManagementException | NoSuchAlgorithmException e) {
LOG.warn("problem ssl setup: " + e.getMessage());
}
}
protected @Nonnull BaseHTTPResponse sendRequest(String uri, String method, String body, Map<String, String> headers)
throws IOException {
return this.sendRequest(uri, method, body != null ? body.getBytes(CHARSET) : null, headers);
}
protected @Nonnull BaseHTTPResponse sendRequest(String uri, String method, byte[] body, Map<String, String> headers)
throws IOException {
if (uri == null) {
uri = "";
}
String surl = this.baseUrl;
if (!surl.endsWith("/") && uri.length() > 0) {
surl += "/";
}
if (uri.startsWith("/")) {
uri = uri.substring(1);
}
surl += uri;
LOG.debug("try to send request with url=" + this.baseUrl + uri + " as method=" + method);
LOG.trace("body:" + (body == null ? "null" : new String(body, CHARSET)));
URL url = new URL(surl);
URLConnection http = url.openConnection();
http.setConnectTimeout(this.timeout);
if (surl.toString().startsWith("https")) {
if (sc != null) {
((HttpsURLConnection) http).setSSLSocketFactory(sc.getSocketFactory());
if (trustAll) {
LOG.debug("trusting all certs");
HostnameVerifier allHostsValid = (hostname, session) -> true;
((HttpsURLConnection) http).setHostnameVerifier(allHostsValid);
}
} else // Should never happen
{
LOG.warn("No SSL context available");
return new BaseHTTPResponse(-1, "");
}
}
((HttpURLConnection) http).setRequestMethod(method);
http.setDoOutput(true);
if (headers != null && headers.size() > 0) {
for (String key : headers.keySet()) {
http.setRequestProperty(key, headers.get(key));
LOG.trace("set http header " + key + ": " + headers.get(key));
}
}
byte[] buffer = new byte[BUFSIZE];
int len = 0, lensum = 0;
// send request
// Send the message to destination
if (!method.equals("GET") && body != null && body.length > 0) {
try (OutputStream output = http.getOutputStream()) {
output.write(body);
}
}
// Receive answer
int responseCode = ((HttpURLConnection) http).getResponseCode();
String sresponse = "";
InputStream response = null;
try {
if (responseCode >= 200 && responseCode < 300) {
response = http.getInputStream();
} else {
response = ((HttpURLConnection) http).getErrorStream();
if (response == null) {
response = http.getInputStream();
}
}
if (response != null) {
while (true) {
len = response.read(buffer, 0, BUFSIZE);
if (len <= 0) {
break;
}
lensum += len;
sresponse += new String(buffer, 0, len, CHARSET);
}
} else {
LOG.debug("response is null");
}
} catch (Exception e) {
LOG.debug("No response. ", e);
} finally {
if (response != null) {
response.close();
}
}
LOG.debug("ResponseCode: " + responseCode);
LOG.trace("Response (len:{}): {}", String.valueOf(lensum), sresponse);
return new BaseHTTPResponse(responseCode, sresponse);
}
public static SSLContext setupSsl(boolean trustall) throws KeyManagementException, NoSuchAlgorithmException{
SSLContext sc = SSLContext.getInstance(SSLCONTEXT);
TrustManager[] trustCerts = null;
if (trustall) {
trustCerts = new TrustManager[] {new javax.net.ssl.X509TrustManager() {
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {}
}};
}
KeyManager[] kms = null;
// Init the SSLContext with a TrustManager[] and SecureRandom()
sc.init(kms, trustCerts, new java.security.SecureRandom());
return sc;
}
public static String getAuthorizationHeaderValue(String username, String password) {
return "Basic " + new String(Base64.getEncoder().encode((username + ":" + password).getBytes()));
}
}
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