io.netty.handler.ssl.Java8SslUtils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

The newest version!

/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.ssl;

import io.netty.util.internal.SuppressJava6Requirement;
import io.netty.util.CharsetUtil;

import javax.net.ssl.SNIHostName;
import javax.net.ssl.SNIMatcher;
import javax.net.ssl.SNIServerName;
import javax.net.ssl.SSLParameters;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

@SuppressJava6Requirement(reason = "Usage guarded by java version check")
final class Java8SslUtils {

    private Java8SslUtils() { }

    static List getSniHostNames(SSLParameters sslParameters) {
        List names = sslParameters.getServerNames();
        if (names == null || names.isEmpty()) {
            return Collections.emptyList();
        }
        List strings = new ArrayList(names.size());

        for (SNIServerName serverName : names) {
            if (serverName instanceof SNIHostName) {
                strings.add(((SNIHostName) serverName).getAsciiName());
            } else {
                throw new IllegalArgumentException("Only " + SNIHostName.class.getName()
                        + " instances are supported, but found: " + serverName);
            }
        }
        return strings;
    }

    static void setSniHostNames(SSLParameters sslParameters, List names) {
        sslParameters.setServerNames(getSniHostNames(names));
    }

    static boolean isValidHostNameForSNI(String hostname) {
        try {
            new SNIHostName(hostname);
            return true;
        } catch (IllegalArgumentException illegal) {
            return false;
        }
    }

    static List getSniHostNames(List names) {
        if (names == null || names.isEmpty()) {
            return Collections.emptyList();
        }
        List sniServerNames = new ArrayList(names.size());
        for (String name: names) {
            sniServerNames.add(new SNIHostName(name.getBytes(CharsetUtil.UTF_8)));
        }
        return sniServerNames;
    }

    static List getSniHostName(byte[] hostname) {
        if (hostname == null || hostname.length == 0) {
            return Collections.emptyList();
        }
        return Collections.singletonList(new SNIHostName(hostname));
    }

    static boolean getUseCipherSuitesOrder(SSLParameters sslParameters) {
        return sslParameters.getUseCipherSuitesOrder();
    }

    static void setUseCipherSuitesOrder(SSLParameters sslParameters, boolean useOrder) {
        sslParameters.setUseCipherSuitesOrder(useOrder);
    }

    @SuppressWarnings("unchecked")
    static void setSNIMatchers(SSLParameters sslParameters, Collection matchers) {
        sslParameters.setSNIMatchers((Collection) matchers);
    }

    @SuppressWarnings("unchecked")
    static boolean checkSniHostnameMatch(Collection matchers, byte[] hostname) {
        if (matchers != null && !matchers.isEmpty()) {
            SNIHostName name = new SNIHostName(hostname);
            Iterator matcherIt = (Iterator) matchers.iterator();
            while (matcherIt.hasNext()) {
                SNIMatcher matcher = matcherIt.next();
                // type 0 is for hostname
                if (matcher.getType() == 0 && matcher.matches(name)) {
                    return true;
                }
            }
            return false;
        }
        return true;
    }
}