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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
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.auth;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import ch.boye.httpclientandroidlib.HttpRequest;
import ch.boye.httpclientandroidlib.annotation.ThreadSafe;
import ch.boye.httpclientandroidlib.config.Lookup;
import ch.boye.httpclientandroidlib.params.HttpParams;
import ch.boye.httpclientandroidlib.protocol.ExecutionContext;
import ch.boye.httpclientandroidlib.protocol.HttpContext;
import ch.boye.httpclientandroidlib.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 ch.boye.httpclientandroidlib.config.Registry}
*/
@ThreadSafe
@Deprecated
public final class AuthSchemeRegistry implements Lookup<AuthSchemeProvider> {
private final ConcurrentHashMap<String,AuthSchemeFactory> registeredSchemes;
public AuthSchemeRegistry() {
super();
this.registeredSchemes = new ConcurrentHashMap<String,AuthSchemeFactory>();
}
/**
* 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}.
*
* <p>
* Please note that custom authentication preferences, if used, need to be updated accordingly
* for the new {@link AuthScheme authentication scheme} to take effect.
* </p>
*
* @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);
} else {
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<String> getSchemeNames() {
return new ArrayList<String>(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<String, AuthSchemeFactory> map) {
if (map == null) {
return;
}
registeredSchemes.clear();
registeredSchemes.putAll(map);
}
public AuthSchemeProvider lookup(final String name) {
return new AuthSchemeProvider() {
public AuthScheme create(final HttpContext context) {
final HttpRequest request = (HttpRequest) context.getAttribute(
ExecutionContext.HTTP_REQUEST);
return getAuthScheme(name, request.getParams());
}
};
}
}
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