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+/*
+ * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/client/BasicCredentialsProvider.java $
+ * $Revision: 653041 $
+ * $Date: 2008-05-03 03:39:28 -0700 (Sat, 03 May 2008) $
+ *
+ * ====================================================================
+ *
+ * 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 org.apache.http.impl.client;
+
+import java.util.HashMap;
+
+import org.apache.http.auth.AuthScope;
+import org.apache.http.auth.Credentials;
+import org.apache.http.client.CredentialsProvider;
+
+/**
+ * Default implementation of {@link CredentialsProvider}
+ *
+ * @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
+ * @author Rodney Waldhoff
+ * @author <a href="mailto:jsdever@apache.org">Jeff Dever</a>
+ * @author Sean C. Sullivan
+ * @author <a href="mailto:becke@u.washington.edu">Michael Becke</a>
+ * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
+ * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
+ * @author <a href="mailto:adrian@intencha.com">Adrian Sutton</a>
+ *
+ * @since 4.0
+ */
+public class BasicCredentialsProvider implements CredentialsProvider {
+
+ private final HashMap<AuthScope, Credentials> credMap;
+
+ /**
+ * Default constructor.
+ */
+ public BasicCredentialsProvider() {
+ super();
+ this.credMap = new HashMap<AuthScope, Credentials>();
+ }
+
+ /**
+ * Sets the {@link Credentials credentials} for the given authentication
+ * scope. Any previous credentials for the given scope will be overwritten.
+ *
+ * @param authscope the {@link AuthScope authentication scope}
+ * @param credentials the authentication {@link Credentials credentials}
+ * for the given scope.
+ *
+ * @see #getCredentials(AuthScope)
+ */
+ public synchronized void setCredentials(
+ final AuthScope authscope,
+ final Credentials credentials) {
+ if (authscope == null) {
+ throw new IllegalArgumentException("Authentication scope may not be null");
+ }
+ credMap.put(authscope, credentials);
+ }
+
+ /**
+ * Find matching {@link Credentials credentials} for the given authentication scope.
+ *
+ * @param map the credentials hash map
+ * @param authscope the {@link AuthScope authentication scope}
+ * @return the credentials
+ *
+ */
+ private static Credentials matchCredentials(
+ final HashMap<AuthScope, Credentials> map,
+ final AuthScope authscope) {
+ // see if we get a direct hit
+ Credentials creds = map.get(authscope);
+ if (creds == null) {
+ // Nope.
+ // Do a full scan
+ int bestMatchFactor = -1;
+ AuthScope bestMatch = null;
+ for (AuthScope current: map.keySet()) {
+ int factor = authscope.match(current);
+ if (factor > bestMatchFactor) {
+ bestMatchFactor = factor;
+ bestMatch = current;
+ }
+ }
+ if (bestMatch != null) {
+ creds = map.get(bestMatch);
+ }
+ }
+ return creds;
+ }
+
+ /**
+ * Get the {@link Credentials credentials} for the given authentication scope.
+ *
+ * @param authscope the {@link AuthScope authentication scope}
+ * @return the credentials
+ *
+ * @see #setCredentials(AuthScope, Credentials)
+ */
+ public synchronized Credentials getCredentials(final AuthScope authscope) {
+ if (authscope == null) {
+ throw new IllegalArgumentException("Authentication scope may not be null");
+ }
+ return matchCredentials(this.credMap, authscope);
+ }
+
+ @Override
+ public String toString() {
+ return credMap.toString();
+ }
+
+ /**
+ * Clears all credentials.
+ */
+ public synchronized void clear() {
+ this.credMap.clear();
+ }
+
+}