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java/org/apache/catalina/startup/HomesUserDatabase.java

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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.
+ */
+
+
+package org.apache.catalina.startup;
+
+
+import java.io.File;
+import java.util.Enumeration;
+import java.util.Hashtable;
+
+
+/**
+ * Concrete implementation of the <code>UserDatabase</code> interface
+ * considers all directories in a directory whose pathname is specified
+ * to our constructor to be "home" directories for those users.
+ *
+ * @author Craig R. McClanahan
+ */
+public final class HomesUserDatabase
+    implements UserDatabase {
+
+
+    // --------------------------------------------------------- Constructors
+
+
+    /**
+     * Initialize a new instance of this user database component.
+     */
+    public HomesUserDatabase() {
+
+        super();
+
+    }
+
+
+    // --------------------------------------------------- Instance Variables
+
+
+    /**
+     * The set of home directories for all defined users, keyed by username.
+     */
+    private final Hashtable<String,String> homes = new Hashtable<>();
+
+
+    /**
+     * The UserConfig listener with which we are associated.
+     */
+    private UserConfig userConfig = null;
+
+
+    // ----------------------------------------------------------- Properties
+
+
+    /**
+     * Return the UserConfig listener with which we are associated.
+     */
+    @Override
+    public UserConfig getUserConfig() {
+        return this.userConfig;
+    }
+
+
+    /**
+     * Set the UserConfig listener with which we are associated.
+     *
+     * @param userConfig The new UserConfig listener
+     */
+    @Override
+    public void setUserConfig(UserConfig userConfig) {
+        this.userConfig = userConfig;
+        init();
+    }
+
+
+    // ------------------------------------------------------- Public Methods
+
+
+    /**
+     * Return an absolute pathname to the home directory for the specified user.
+     *
+     * @param user User for which a home directory should be retrieved
+     */
+    @Override
+    public String getHome(String user) {
+        return homes.get(user);
+    }
+
+
+    /**
+     * Return an enumeration of the usernames defined on this server.
+     */
+    @Override
+    public Enumeration<String> getUsers() {
+        return homes.keys();
+    }
+
+
+    // ------------------------------------------------------ Private Methods
+
+
+    /**
+     * Initialize our set of users and home directories.
+     */
+    private void init() {
+
+        String homeBase = userConfig.getHomeBase();
+        File homeBaseDir = new File(homeBase);
+        if (!homeBaseDir.exists() || !homeBaseDir.isDirectory())
+            return;
+        String homeBaseFiles[] = homeBaseDir.list();
+        if (homeBaseFiles == null) {
+            return;
+        }
+
+        for (int i = 0; i < homeBaseFiles.length; i++) {
+            File homeDir = new File(homeBaseDir, homeBaseFiles[i]);
+            if (!homeDir.isDirectory() || !homeDir.canRead())
+                continue;
+            homes.put(homeBaseFiles[i], homeDir.toString());
+        }
+    }
+}