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/*
* Copyright 2011 gitblit.com.
*
* 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.
*/
package com.gitblit.utils;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
/**
* Utility class for establishing HTTP/HTTPS connections.
*
* @author James Moger
*
*/
public class ConnectionUtils {
static final String CHARSET;
private static final SSLContext SSL_CONTEXT;
private static final DummyHostnameVerifier HOSTNAME_VERIFIER;
static {
SSLContext context = null;
try {
context = SSLContext.getInstance("SSL");
context.init(null, new TrustManager[] { new DummyTrustManager() }, new SecureRandom());
} catch (Throwable t) {
t.printStackTrace();
}
SSL_CONTEXT = context;
HOSTNAME_VERIFIER = new DummyHostnameVerifier();
CHARSET = "UTF-8";
}
public static void setAuthorization(URLConnection conn, String username, char[] password) {
if (!StringUtils.isEmpty(username) && (password != null && password.length > 0)) {
conn.setRequestProperty(
"Authorization",
"Basic "
+ Base64.encodeBytes((username + ":" + new String(password)).getBytes()));
}
}
public static URLConnection openReadConnection(String url, String username, char[] password)
throws IOException {
URLConnection conn = openConnection(url, username, password);
conn.setRequestProperty("Accept-Charset", ConnectionUtils.CHARSET);
return conn;
}
public static URLConnection openConnection(String url, String username, char[] password)
throws IOException {
URL urlObject = new URL(url);
URLConnection conn = urlObject.openConnection();
setAuthorization(conn, username, password);
conn.setUseCaches(false);
conn.setDoOutput(true);
if (conn instanceof HttpsURLConnection) {
HttpsURLConnection secureConn = (HttpsURLConnection) conn;
secureConn.setSSLSocketFactory(SSL_CONTEXT.getSocketFactory());
secureConn.setHostnameVerifier(HOSTNAME_VERIFIER);
}
return conn;
}
/**
* DummyTrustManager trusts all certificates.
*
* @author James Moger
*/
private static class DummyTrustManager implements X509TrustManager {
@Override
public void checkClientTrusted(X509Certificate[] certs, String authType)
throws CertificateException {
}
@Override
public void checkServerTrusted(X509Certificate[] certs, String authType)
throws CertificateException {
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}
}
/**
* Trusts all hostnames from a certificate, including self-signed certs.
*
* @author James Moger
*/
private static class DummyHostnameVerifier implements HostnameVerifier {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
}
}
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