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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
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 * file and include the License file at packager/legal/LICENSE.txt.
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 * GPL Classpath Exception:
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 *
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 */
// Portions Copyright [2018] [Payara Foundation and/or its affiliates]
package com.sun.enterprise.iiop.security;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Locale;
import java.util.logging.Level;
import java.util.logging.Logger;

//import org.omg.IOP.TAG_ALTERNATE_IIOP_ADDRESS ;

import com.sun.corba.ee.spi.ior.IOR;
import com.sun.corba.ee.spi.ior.iiop.AlternateIIOPAddressComponent;
//import com.sun.enterprise.iiop.AlternateIIOPAddressComponent;
import com.sun.corba.ee.spi.ior.iiop.IIOPProfileTemplate;
import com.sun.corba.ee.spi.ior.iiop.IIOPAddress;
import com.sun.corba.ee.spi.transport.IORToSocketInfo;
import com.sun.corba.ee.spi.transport.SocketInfo;

import com.sun.logging.LogDomains;
import org.glassfish.internal.api.Globals;

/**
 * This implements IORToSocketInfo for ORB. Part of logic is from previous version of
 * IIOPSSLSocketFactory.
 * 
 * @author Shing Wai Chan
 */
public class IORToSocketInfoImpl implements IORToSocketInfo {
    private static Logger _logger = null;
    static {
        _logger = LogDomains.getLogger(IORToSocketInfoImpl.class, LogDomains.CORBA_LOGGER);
    }

    private final String baseMsg = IORToSocketInfoImpl.class.getName();

    // Maps primary address to list of alternate addresses.
    // Used to compare new IOR/primaries with ones already seen for
    // that primary. We expect them to be equal.
    private Map primaryToAddresses = new HashMap();

    // Maps primary to randomized list of alternate addresses.
    private Map primaryToRandomizedAddresses = new HashMap();

    // ----- implements com.sun.corba.ee.spi.transport.IORToSocketInfo -----
    private SecurityMechanismSelector selector;

    public IORToSocketInfoImpl() {
        selector = Globals.get(SecurityMechanismSelector.class);
    }

    @Override
    public List getSocketInfo(IOR ior, List previous) {
        try {
            if (_logger.isLoggable(Level.FINE)) {
                _logger.log(Level.FINE, baseMsg + ".getSocketInfo->:");
            }
            List result = new ArrayList();

            IIOPProfileTemplate iiopProfileTemplate = (IIOPProfileTemplate) ior.getProfile().getTaggedProfileTemplate();
            IIOPAddress primary = iiopProfileTemplate.getPrimaryAddress();
            Locale loc = Locale.getDefault();
            String host = primary.getHost().toLowerCase(loc);

            String type = null;
            int port = 0;
            ConnectionContext ctx = new ConnectionContext();
            SocketInfo socketInfo = selector.getSSLPort(ior, ctx);
            selector.setClientConnectionContext(ctx);
            if (socketInfo == null) {
                type = SocketInfo.IIOP_CLEAR_TEXT;
                port = primary.getPort();
                if (_logger.isLoggable(Level.FINE)) {
                    _logger.log(Level.FINE, baseMsg + ".getSocketInfo: did not find SSL SocketInfo");
                }
            } else {
                type = socketInfo.getType();
                port = socketInfo.getPort();
                if (_logger.isLoggable(Level.FINE)) {
                    _logger.log(Level.FINE, baseMsg + ".getSocketInfo: found SSL socketInfo");
                }
            }

            if (_logger.isLoggable(Level.FINE)) {
                _logger.log(Level.FINE, baseMsg + ".getSocketInfo: Connection Context:" + ctx);
                _logger.log(Level.FINE,
                        baseMsg + ".getSocketInfo: ENDPOINT INFO:type=" + type + ",host=" + host + ", port=" + port);
            }

            // for SSL
            if (socketInfo != null) {
                result.add(socketInfo);
                if (_logger.isLoggable(Level.FINE)) {
                    _logger.log(Level.FINE, baseMsg + ".getSocketInfo: returning SSL socketInfo:" + " " + socketInfo.getType()
                            + " " + socketInfo.getHost() + " " + socketInfo.getPort());
                }
                // REVISIT: should call IIOPPrimaryToContactInfo.reset
                // right here to invalidate sticky for this result.
                // However, SSL and IIOP-FO is not a supported feature.
                return result;
            }

            ////////////////////////////////////////////////////
            //
            // The remainder of this code is non-SSL.
            // Author: Harold Carr
            // Please contact author is changes needed.
            //

            // for non-SSL
            if (_logger.isLoggable(Level.FINE)) {
                _logger.log(Level.FINE, baseMsg + ".getSocketInfo: returning non SSL socketInfo");
            }

            if (!previous.isEmpty()) {
                if (_logger.isLoggable(Level.FINE)) {
                    _logger.log(Level.FINE, baseMsg + ".getSocketInfo: returning previous socketInfo: " + previous);
                }
                return previous;
            }

            //
            // Save and add primary address
            //

            SocketInfo primarySocketInfo = createSocketInfo("primary", type, host, port);
            result.add(primarySocketInfo);

            //
            // List alternate addresses.
            //

            Iterator iterator = iiopProfileTemplate.iteratorById(org.omg.IOP.TAG_ALTERNATE_IIOP_ADDRESS.value);

            while (iterator.hasNext()) {
                AlternateIIOPAddressComponent alternate = (AlternateIIOPAddressComponent) iterator.next();

                host = alternate.getAddress().getHost().toLowerCase(loc);
                port = alternate.getAddress().getPort();

                result.add(createSocketInfo("AlternateIIOPAddressComponent", SocketInfo.IIOP_CLEAR_TEXT, host, port));
            }

            synchronized (this) {
                List existing = (List) primaryToAddresses.get(primarySocketInfo);
                if (existing == null) {
                    // First time we've seen this primary.
                    // Save unrandomized list with primary at head.
                    primaryToAddresses.put(primarySocketInfo, result);
                    result.remove(0); // do not randomize primary
                    // Randomized the alternates.
                    java.util.Collections.shuffle(result);
                    result.add(0, primarySocketInfo); // put primary at head
                    // Save for subsequent use.
                    primaryToRandomizedAddresses.put(primarySocketInfo, result);
                    if (_logger.isLoggable(Level.FINE)) {
                        _logger.log(Level.FINE, baseMsg + ".getSocketInfo: initial randomized result: " + result);
                    }
                    return result;
                } else {
                    if (result.equals(existing)) {
                        // The are the same so return the randomized version.
                        result = (List) primaryToRandomizedAddresses.get(primarySocketInfo);
                        if (_logger.isLoggable(Level.FINE)) {
                            _logger.log(Level.FINE, baseMsg + ".getSocketInfo: existing randomized result: " + result);
                        }
                        return result;
                    } else {
                        // The lists should be the same.
                        // If not log a warning and return the
                        // non-randomized current list since it is different.
                        _logger.log(Level.FINE, baseMsg + ".getSocketInfo:" + " Address lists do not match: primary: "
                                + primarySocketInfo + "; returning current: " + result + "; existing is: " + existing);
                        return result;
                    }
                }
            }
        } catch (Exception ex) {
            _logger.log(Level.WARNING, "Exception getting SocketInfo", ex);
            RuntimeException rte = new RuntimeException(ex);
            rte.initCause(ex);
            throw rte;
        } finally {
            if (_logger.isLoggable(Level.FINE)) {
                _logger.log(Level.FINE, baseMsg + ".getSocketInfo<-:");
            }
        }
    }

    // ----- END implements com.sun.corba.ee.spi.transport.IORToSocketInfo -----

    public static SocketInfo createSocketInfo(String msg, final String type, final String host, final int port) {
        if (_logger.isLoggable(Level.FINE)) {
            _logger.log(Level.FINE, "Address from: " + msg + "; type/address/port: " + type + "/" + host + "/" + port);
        }

        return new SocketInfo() {
            @Override
            public String getType() {
                return type;
            }

            @Override
            public String getHost() {
                return host;
            }

            @Override
            public int getPort() {
                return port;
            }

            @Override
            public boolean equals(Object o) {
                if (o == null) {
                    return false;
                }
                if (!(o instanceof SocketInfo)) {
                    return false;
                }
                SocketInfo other = (SocketInfo) o;
                if (other.getPort() != port) {
                    return false;
                }
                if (!other.getHost().equals(host)) {
                    return false;
                }
                if (!other.getType().equals(type)) {
                    return false;
                }
                return true;
            }

            @Override
            public int hashCode() {
                return type.hashCode() ^ host.hashCode() ^ port;
            }

            @Override
            public String toString() {
                return "SocketInfo[" + type + " " + host + " " + port + "]";
            }
        };
    }
}

// End of file.




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