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/*
* ====================================================================
* 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
* .
*
*/
package org.apache.http.nio.conn.ssl;
import java.io.IOException;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import org.apache.http.HttpHost;
import org.apache.http.conn.ssl.AllowAllHostnameVerifier;
import org.apache.http.conn.ssl.BrowserCompatHostnameVerifier;
import org.apache.http.conn.ssl.SSLContexts;
import org.apache.http.conn.ssl.StrictHostnameVerifier;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.nio.conn.SchemeIOSessionStrategy;
import org.apache.http.nio.reactor.IOSession;
import org.apache.http.nio.reactor.ssl.SSLIOSession;
import org.apache.http.nio.reactor.ssl.SSLMode;
import org.apache.http.nio.reactor.ssl.SSLSetupHandler;
import org.apache.http.util.Args;
import org.apache.http.util.Asserts;
import org.apache.http.util.TextUtils;
/**
* TLS/SSL transport level security strategy.
*
* @since 4.0
*/
public class SSLIOSessionStrategy implements SchemeIOSessionStrategy {
public static final X509HostnameVerifier ALLOW_ALL_HOSTNAME_VERIFIER =
new AllowAllHostnameVerifier();
public static final X509HostnameVerifier BROWSER_COMPATIBLE_HOSTNAME_VERIFIER =
new BrowserCompatHostnameVerifier();
public static final X509HostnameVerifier STRICT_HOSTNAME_VERIFIER =
new StrictHostnameVerifier();
private static String[] split(final String s) {
if (TextUtils.isBlank(s)) {
return null;
}
return s.split(" *, *");
}
public static SSLIOSessionStrategy getDefaultStrategy() {
return new SSLIOSessionStrategy(
SSLContexts.createDefault(),
BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
}
public static SSLIOSessionStrategy getSystemDefaultStrategy() {
return new SSLIOSessionStrategy(
SSLContexts.createSystemDefault(),
split(System.getProperty("https.protocols")),
split(System.getProperty("https.cipherSuites")),
BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
}
private final SSLContext sslContext;
private final String[] supportedProtocols;
private final String[] supportedCipherSuites;
private final X509HostnameVerifier hostnameVerifier;
public SSLIOSessionStrategy(
final SSLContext sslContext,
final String[] supportedProtocols,
final String[] supportedCipherSuites,
final X509HostnameVerifier hostnameVerifier) {
super();
this.sslContext = Args.notNull(sslContext, "SSL context");
this.supportedProtocols = supportedProtocols;
this.supportedCipherSuites = supportedCipherSuites;
this.hostnameVerifier = hostnameVerifier != null ? hostnameVerifier : BROWSER_COMPATIBLE_HOSTNAME_VERIFIER;
}
public SSLIOSessionStrategy(
final SSLContext sslcontext,
final X509HostnameVerifier hostnameVerifier) {
this(sslcontext, null, null, hostnameVerifier);
}
public SSLIOSessionStrategy(final SSLContext sslcontext) {
this(sslcontext, null, null, BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
}
public SSLIOSession upgrade(final HttpHost host, final IOSession iosession) throws IOException {
Asserts.check(!(iosession instanceof SSLIOSession), "I/O session is already upgraded to TLS/SSL");
final SSLIOSession ssliosession = new SSLIOSession(
iosession,
SSLMode.CLIENT,
this.sslContext,
new SSLSetupHandler() {
public void initalize(
final SSLEngine sslengine) throws SSLException {
if (supportedProtocols != null) {
sslengine.setEnabledProtocols(supportedProtocols);
}
if (supportedCipherSuites != null) {
sslengine.setEnabledCipherSuites(supportedCipherSuites);
}
initializeEngine(sslengine);
}
public void verify(
final IOSession iosession,
final SSLSession sslsession) throws SSLException {
verifySession(host, iosession, sslsession);
}
});
iosession.setAttribute(SSLIOSession.SESSION_KEY, ssliosession);
ssliosession.initialize();
return ssliosession;
}
protected void initializeEngine(final SSLEngine engine) {
}
protected void verifySession(
final HttpHost host,
final IOSession iosession,
final SSLSession sslsession) throws SSLException {
final Certificate[] certs = sslsession.getPeerCertificates();
final X509Certificate x509 = (X509Certificate) certs[0];
this.hostnameVerifier.verify(host.getHostName(), x509);
}
public boolean isLayeringRequired() {
return true;
}
}
