org.apache.axis.security.simple.SimpleSecurityProvider.java Source code

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Here is the source code for org.apache.axis.security.simple.SimpleSecurityProvider.java

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/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed 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.axis.security.simple;

import org.apache.axis.Constants;
import org.apache.axis.MessageContext;
import org.apache.axis.components.logger.LogFactory;
import org.apache.axis.security.AuthenticatedUser;
import org.apache.axis.security.SecurityProvider;
import org.apache.axis.utils.Messages;
import org.apache.commons.logging.Log;

import java.io.File;
import java.io.FileReader;
import java.io.LineNumberReader;
import java.util.HashMap;
import java.util.StringTokenizer;

/**
 * SimpleSecurityProvider
 *
 * @author Glen Daniels (gdaniels@apache.org)
 */
public class SimpleSecurityProvider implements SecurityProvider {
    protected static Log log = LogFactory.getLog(SimpleSecurityProvider.class.getName());

    HashMap users = null;
    HashMap perms = null;

    boolean initialized = false;

    // load the users list
    private synchronized void initialize(MessageContext msgContext) {
        if (initialized)
            return;

        String configPath = msgContext.getStrProp(Constants.MC_CONFIGPATH);
        if (configPath == null) {
            configPath = "";
        } else {
            configPath += File.separator;
        }
        File userFile = new File(configPath + "users.lst");
        if (userFile.exists()) {
            users = new HashMap();

            try {

                FileReader fr = new FileReader(userFile);
                LineNumberReader lnr = new LineNumberReader(fr);
                String line = null;

                // parse lines into user and passwd tokens and add result to hash table
                while ((line = lnr.readLine()) != null) {
                    StringTokenizer st = new StringTokenizer(line);
                    if (st.hasMoreTokens()) {
                        String userID = st.nextToken();
                        String passwd = (st.hasMoreTokens()) ? st.nextToken() : "";

                        if (log.isDebugEnabled()) {
                            log.debug(Messages.getMessage("fromFile00", userID, passwd));
                        }

                        users.put(userID, passwd);
                    }
                }

                lnr.close();

            } catch (Exception e) {
                log.error(Messages.getMessage("exception00"), e);
                return;
            }
        }
        initialized = true;
    }

    /** Authenticate a user from a username/password pair.
     *
     * @param username the user name to check
     * @param password the password to check
     * @return an AuthenticatedUser or null
     */
    public AuthenticatedUser authenticate(MessageContext msgContext) {

        if (!initialized) {
            initialize(msgContext);
        }

        String username = msgContext.getUsername();
        String password = msgContext.getPassword();

        if (users != null) {
            if (log.isDebugEnabled()) {
                log.debug(Messages.getMessage("user00", username));
            }

            // in order to authenticate, the user must exist
            if (username == null || username.equals("") || !users.containsKey(username))
                return null;

            String valid = (String) users.get(username);

            if (log.isDebugEnabled()) {
                log.debug(Messages.getMessage("password00", password));
            }

            // if a password is defined, then it must match
            if (valid.length() > 0 && !valid.equals(password))
                return null;

            if (log.isDebugEnabled()) {
                log.debug(Messages.getMessage("auth00", username));
            }

            return new SimpleAuthenticatedUser(username);
        }

        return null;
    }

    /** See if a user matches a principal name.  The name might be a user
     * or a group.
     *
     * @return true if the user matches the passed name
     */
    public boolean userMatches(AuthenticatedUser user, String principal) {
        if (user == null)
            return principal == null;
        return user.getName().compareToIgnoreCase(principal) == 0;
    }
}