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Commworx.java

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package net.threebit.utils.sosc;

/*
        Copyright 2003 Shawn Deleurme
        Copyright 2003 Kevin O'Donnell

        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import java.sql.*;
import java.io.*;
import java.util.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;

public class Commworx {

        final HttpServletRequest request;
        final HttpServletResponse response;
        final JspWriter out;

        Commworx (HttpServletRequest request, HttpServletResponse response, JspWriter out) {
                this.request = request;
                this.response = response;
                this.out = out;
        }

        public boolean simpleAuth (String[] users) throws Exception {

                String addr = request.getRemoteAddr();

                // Go through the simple and FATAL conditions first.
                if (users == null) {
                        throw new Exception("Auth denied; specified userlist was null; default no acess");
                }
                if (! addr.startsWith("192.168.20")) {
                        throw new Exception("Can't authenticate against Commworx session table if you are not on the local network; auth denied");
                }

                // Find out what username is logged into Commworx from the IP address that this
                // request is originating from.
                DbTool db = null;
                ResultSet r = db.query(" select top 1 * from waf_sys_session where SessionMachine = '" + addr + "' order by sessionstart desc ");
                if (! r.first()) {
                        throw new Exception("No Commworx Session information for your address (" + addr + ")");
                }
                String userid = "" + r.getObject("userid"); // NULLS in the commworx database SUCK!

                // Compare this against the list of users
                boolean ok = false;
                for (int x = 0; x < users.length; x++) {
                        if (users[x].equalsIgnoreCase(userid)) { ok = true; }
                }

                if (! ok) {
                        String userList = "";
                        for (int x = 0; x < users.length; x++) { userList = userList + " " + users[x] + ";"; }
                        throw new Exception("Auth denied; you are not allowed to perform this action. (Talk to " + userList + ")");
                }

                return true;
        }


}

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