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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.auth;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.http.HttpRequest;
import org.apache.http.annotation.Contract;
import org.apache.http.annotation.ThreadingBehavior;
import org.apache.http.config.Lookup;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.Args;

/**
 * Authentication scheme registry that can be used to obtain the corresponding
 * authentication scheme implementation for a given type of authorization challenge.
 *
 * @since 4.0
 *
 * @deprecated (4.3) use {@link org.apache.http.config.Registry}
 */
@Contract(threading = ThreadingBehavior.SAFE)
@Deprecated
public final class AuthSchemeRegistry implements Lookup {

    private final ConcurrentHashMap registeredSchemes;

    public AuthSchemeRegistry() {
        super();
        this.registeredSchemes = new ConcurrentHashMap();
    }

    /**
     * Registers a {@link AuthSchemeFactory} with  the given identifier. If a factory with the
     * given name already exists it will be overridden. This name is the same one used to
     * retrieve the {@link AuthScheme authentication scheme} from {@link #getAuthScheme}.
     *
     * 

* Please note that custom authentication preferences, if used, need to be updated accordingly * for the new {@link AuthScheme authentication scheme} to take effect. *

* * @param name the identifier for this scheme * @param factory the {@link AuthSchemeFactory} class to register * * @see #getAuthScheme */ public void register( final String name, final AuthSchemeFactory factory) { Args.notNull(name, "Name"); Args.notNull(factory, "Authentication scheme factory"); registeredSchemes.put(name.toLowerCase(Locale.ENGLISH), factory); } /** * Unregisters the class implementing an {@link AuthScheme authentication scheme} with * the given name. * * @param name the identifier of the class to unregister */ public void unregister(final String name) { Args.notNull(name, "Name"); registeredSchemes.remove(name.toLowerCase(Locale.ENGLISH)); } /** * Gets the {@link AuthScheme authentication scheme} with the given name. * * @param name the {@link AuthScheme authentication scheme} identifier * @param params the {@link HttpParams HTTP parameters} for the authentication * scheme. * * @return {@link AuthScheme authentication scheme} * * @throws IllegalStateException if a scheme with the given name cannot be found */ public AuthScheme getAuthScheme(final String name, final HttpParams params) throws IllegalStateException { Args.notNull(name, "Name"); final AuthSchemeFactory factory = registeredSchemes.get(name.toLowerCase(Locale.ENGLISH)); if (factory != null) { return factory.newInstance(params); } throw new IllegalStateException("Unsupported authentication scheme: " + name); } /** * Obtains a list containing the names of all registered {@link AuthScheme authentication * schemes} * * @return list of registered scheme names */ public List getSchemeNames() { return new ArrayList(registeredSchemes.keySet()); } /** * Populates the internal collection of registered {@link AuthScheme authentication schemes} * with the content of the map passed as a parameter. * * @param map authentication schemes */ public void setItems(final Map map) { if (map == null) { return; } registeredSchemes.clear(); registeredSchemes.putAll(map); } @Override public AuthSchemeProvider lookup(final String name) { return new AuthSchemeProvider() { @Override public AuthScheme create(final HttpContext context) { final HttpRequest request = (HttpRequest) context.getAttribute( ExecutionContext.HTTP_REQUEST); return getAuthScheme(name, request.getParams()); } }; } }




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