/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.utils;
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import java.io.IOException;
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import java.net.URL;
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import java.net.URLConnection;
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import java.security.SecureRandom;
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import java.security.cert.CertificateException;
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import java.security.cert.X509Certificate;
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import javax.net.ssl.HostnameVerifier;
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import javax.net.ssl.HttpsURLConnection;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLSession;
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import javax.net.ssl.TrustManager;
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import javax.net.ssl.X509TrustManager;
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/**
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* Utility class for establishing HTTP/HTTPS connections.
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*
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* @author James Moger
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*
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*/
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public class ConnectionUtils {
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static final String CHARSET;
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private static final SSLContext SSL_CONTEXT;
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private static final DummyHostnameVerifier HOSTNAME_VERIFIER;
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static {
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SSLContext context = null;
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try {
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context = SSLContext.getInstance("SSL");
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context.init(null, new TrustManager[] { new DummyTrustManager() }, new SecureRandom());
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} catch (Throwable t) {
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t.printStackTrace();
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}
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SSL_CONTEXT = context;
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HOSTNAME_VERIFIER = new DummyHostnameVerifier();
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CHARSET = "UTF-8";
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}
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public static void setAuthorization(URLConnection conn, String username, char[] password) {
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if (!StringUtils.isEmpty(username) && (password != null && password.length > 0)) {
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conn.setRequestProperty(
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"Authorization",
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"Basic "
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+ Base64.encodeBytes((username + ":" + new String(password)).getBytes()));
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}
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}
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public static URLConnection openReadConnection(String url, String username, char[] password)
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throws IOException {
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URLConnection conn = openConnection(url, username, password);
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conn.setRequestProperty("Accept-Charset", ConnectionUtils.CHARSET);
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return conn;
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}
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public static URLConnection openConnection(String url, String username, char[] password)
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throws IOException {
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URL urlObject = new URL(url);
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URLConnection conn = urlObject.openConnection();
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setAuthorization(conn, username, password);
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conn.setUseCaches(false);
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conn.setDoOutput(true);
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if (conn instanceof HttpsURLConnection) {
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HttpsURLConnection secureConn = (HttpsURLConnection) conn;
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secureConn.setSSLSocketFactory(SSL_CONTEXT.getSocketFactory());
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secureConn.setHostnameVerifier(HOSTNAME_VERIFIER);
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}
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return conn;
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}
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/**
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* DummyTrustManager trusts all certificates.
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*
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* @author James Moger
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*/
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private static class DummyTrustManager implements X509TrustManager {
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@Override
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public void checkClientTrusted(X509Certificate[] certs, String authType)
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throws CertificateException {
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}
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@Override
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public void checkServerTrusted(X509Certificate[] certs, String authType)
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throws CertificateException {
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}
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@Override
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public X509Certificate[] getAcceptedIssuers() {
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return null;
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}
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}
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/**
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* Trusts all hostnames from a certificate, including self-signed certs.
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*
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* @author James Moger
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*/
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private static class DummyHostnameVerifier implements HostnameVerifier {
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@Override
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public boolean verify(String hostname, SSLSession session) {
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return true;
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}
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}
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}
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