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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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 io.undertow.websockets.jsr;

import io.undertow.protocols.ssl.UndertowXnioSsl;
import org.xnio.OptionMap;
import org.xnio.XnioWorker;
import org.xnio.ssl.XnioSsl;

import javax.net.ssl.SSLContext;
import jakarta.websocket.ClientEndpointConfig;
import jakarta.websocket.Endpoint;
import java.net.URI;

/**
 * Client SSL provider that gets the SSL context in one of two ways.
 *
 * Either the {@link #setSslContext(javax.net.ssl.SSLContext)} method can
 * be invoked before connecting, and this context will be used for the next
 * client connection from this thread, or alternatively the
 * io.undertow.websocket.SSL_CONTEXT property can be set in the user properties
 * of the ClientEndpointConfig.
 *
 * @author Stuart Douglas
 */
public class DefaultWebSocketClientSslProvider implements WebsocketClientSslProvider {

    public static final String SSL_CONTEXT = "io.undertow.websocket.SSL_CONTEXT";

    private static final ThreadLocal LOCAL_SSL_CONTEXT = new ThreadLocal<>();

    @Override
    public XnioSsl getSsl(XnioWorker worker, Class annotatedEndpoint, URI uri) {
        return getThreadLocalSsl(worker);
    }

    @Override
    public XnioSsl getSsl(XnioWorker worker, Object annotatedEndpointInstance, URI uri) {
        return getThreadLocalSsl(worker);
    }

    @Override
    public XnioSsl getSsl(XnioWorker worker, Endpoint endpoint, ClientEndpointConfig cec, URI uri) {
        XnioSsl ssl =  getThreadLocalSsl(worker);
        if(ssl != null) {
            return ssl;
        }
        //look for some SSL config
        SSLContext sslContext = (SSLContext) cec.getUserProperties().get(SSL_CONTEXT);

        if (sslContext != null) {
            return new UndertowXnioSsl(worker.getXnio(), OptionMap.EMPTY, sslContext);
        }
        return null;
    }

    public static void setSslContext(final SSLContext context) {
        LOCAL_SSL_CONTEXT.set(context);
    }
    private XnioSsl getThreadLocalSsl(XnioWorker worker) {
        SSLContext val = LOCAL_SSL_CONTEXT.get();
        if (val != null) {
            LOCAL_SSL_CONTEXT.remove();
            return new UndertowXnioSsl(worker.getXnio(), OptionMap.EMPTY, val);
        }
        return null;
    }

}