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/**
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* '$RCSfile$'
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* Purpose: A Class that tracks sessions for MetaCatServlet users.
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Matt Jones
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* Release: @release@
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bojilova
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*
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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*/
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package edu.ucsb.nceas.metacat;
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import javax.servlet.http.HttpSession;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.util.Properties;
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import java.util.PropertyResourceBundle;
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import java.util.Stack;
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import java.io.FileInputStream;
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import java.io.PrintWriter;
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import java.rmi.*;
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import SrbJavaGlueInterface;
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import RMIControllerInterface;
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/**
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* A Class that implements session tracking for MetaCatServlet users.
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* User's login data are stored in the session object.
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* User authentication is made through SRB RMI Connection.
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*/
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public class MetaCatSession {
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static String debug = null;
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HttpSession session = null;
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// DCS-ATTRIBUTE-INDEX
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// They are from mdasC_db2_externs.h.
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final static int USER_NAME = 7;
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final static int USER_GROUP_NAME = 3;
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// JNI (Java Native Interface) routines for SRB
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static String srbHost;
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static String srbPort;
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static String RMIhost;
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static RMIControllerInterface rmicon;
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static SrbJavaGlueInterface srbJG;
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static {
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294
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try {
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PropertyResourceBundle SRBProps = null;
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209
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// SRB properties that tells about the location of SRB RMI Server
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// srbProps.properties should reside on metacat server
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SRBProps = (PropertyResourceBundle)
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PropertyResourceBundle.getBundle("edu.ucsb.nceas.metacat.srbProps");
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srbHost = (String)SRBProps.handleGetObject("host");
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srbPort = (String)SRBProps.handleGetObject("port");
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// should handle missing RMIhost name here
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RMIhost = (String)SRBProps.handleGetObject("RMIhost");
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String name = "//" + RMIhost + "/RMIController";
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rmicon = (RMIControllerInterface)Naming.lookup(name);
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name = "//" + RMIhost + "/SrbJavaGlue";
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srbJG = (SrbJavaGlueInterface)Naming.lookup(name);
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} catch (Exception e) {
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System.err.println("MetaCatSession static: " + e.getMessage());
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System.exit(0);
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}
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}
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/** Construct a MetaCatSession
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*
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* @param request the request made from the client
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* @param username the username entered when login
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* @param password the password entered when login
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*/
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public MetaCatSession (HttpServletRequest request,
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String username, String password)
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throws IllegalStateException {
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// create a new HTTPSession object
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this.session = getSession(request, username, password);
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}
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/** Get new HttpSession and store username & password in it */
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private HttpSession getSession(HttpServletRequest request,
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String username, String password)
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throws IllegalStateException {
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// get the current session object, create one if necessary
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HttpSession sess = request.getSession(true);
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// if it is still in use unvalidate and get a new one
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if ( !sess.isNew() ) {
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sess.invalidate();
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sess = request.getSession(true);
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}
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// store username & password in the session for later use if necessary
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sess.setMaxInactiveInterval(-1);
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sess.setAttribute("username", username);
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sess.setAttribute("password", password);
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return sess;
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}
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411
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/** handle Login action for MetaCatServlet
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*/
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public String userLogin(HttpServletResponse response,
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String username, String password,
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String action, String htmlpath) {
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String out = null;
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// for public connection only
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// this does not go through auth checking in SRB
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// the final implementation will need auth checking in SRB for public
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if ( username.equals("public") ) {
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try {
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if (action.equals("Login Client")) {
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String message = "User Authentication successful";
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out = formatOutput("success", message);
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return out;
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} else {
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response.sendRedirect(
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response.encodeRedirectUrl(htmlpath + "/index.html"));
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}
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} catch ( java.io.IOException ioe) {
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disconnect();
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String message = "MetaCatSession.userLogin() - " +
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"Error on redirect of HttpServletResponse: " +
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ioe.getMessage();
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out = formatOutput("error", message);
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return out;
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}
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}
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// Auth checking in SRB.
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// It fails if not registered user provided.
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// It gets all users/groups from MCAT for implementing ACL for MetaCat
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// The last one probably will need to be done on separate MetaCatServlet
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// action instead on Login action
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try {
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if ( userAuth(username, password) ) {
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try {
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if (action.equals("Login Client")) {
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String message = "User Authentication successful";
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out = formatOutput("success", message);
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} else {
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response.sendRedirect(
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response.encodeRedirectUrl(htmlpath + "/metacat.html"));
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}
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} catch ( java.io.IOException ioe) {
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| 152 |
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disconnect();
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String message = "MetaCatSession.userLogin() - " +
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"Error on redirect of HttpServletResponse: " +
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ioe.getMessage();
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out = formatOutput("error", message);
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}
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// the user has not been authenticated by SRB
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} else {
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disconnect();
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String message = "SRB Connection failed. " +
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| 162 |
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"SRB RMI Server is not running now or " +
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"user " + username +
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| 164 |
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" has not been authenticated to use the system.";
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| 165 |
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out = formatOutput("error", message);
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| 166 |
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}
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| 167 |
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} catch ( java.rmi.RemoteException re) {
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| 168 |
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disconnect();
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| 169 |
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String message = "SRB Connection failed. " + re.getMessage();
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| 170 |
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out = formatOutput("error", message);
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| 171 |
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}
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| 172 |
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| 173 |
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return out;
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| 174 |
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}
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| 175 |
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| 176 |
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/* format the output in xml for processing from client appl
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| 177 |
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*/
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| 178 |
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private String formatOutput(String tag, String message) {
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| 179 |
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| 180 |
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StringBuffer out = new StringBuffer();
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| 181 |
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| 182 |
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out.append("<?xml version=\"1.0\"?>\n");
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| 183 |
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out.append("<" + tag + ">");
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| 184 |
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if ( tag.equals("error") ) {
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| 185 |
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out.append(message);
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| 186 |
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} else {
|
| 187 |
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out.append("\n <message>" + message + "</message>\n");
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| 188 |
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String username = (String)this.session.getAttribute("username");
|
| 189 |
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out.append(" <username>" + username + "</username>\n");
|
| 190 |
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String groupname = (String)this.session.getAttribute("groupname");
|
| 191 |
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out.append(" " + groupname + "\n");
|
| 192 |
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|
| 193 |
|
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Stack usersGroups = new Stack();
|
| 194 |
|
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usersGroups = (Stack)this.session.getAttribute("usersgroups");
|
| 195 |
|
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String val = "";
|
| 196 |
|
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StringBuffer res = new StringBuffer();
|
| 197 |
|
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while ( !usersGroups.empty() ) {
|
| 198 |
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val = " " + (String)usersGroups.pop() + "\n" + val;
|
| 199 |
|
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if ( val.startsWith(" <groupname>") ) {
|
| 200 |
|
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val = " <group>\n" + val + " </group>\n";
|
| 201 |
|
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res.insert(0, val);
|
| 202 |
|
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val = "";
|
| 203 |
|
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}
|
| 204 |
|
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}
|
| 205 |
|
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out.append(res.toString());
|
| 206 |
|
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}
|
| 207 |
|
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out.append("</" + tag + ">");
|
| 208 |
|
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|
| 209 |
|
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return out.toString();
|
| 210 |
|
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|
| 211 |
|
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}
|
| 212 |
|
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|
| 213 |
|
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/** Try to make user authentication through SRB RMI Connection
|
| 214 |
|
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* Using that connection to get:
|
| 215 |
|
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* . the groupname of connected user;
|
| 216 |
|
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* . a whole list of all groups and users in MCAT.
|
| 217 |
|
|
*/
|
| 218 |
|
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private boolean userAuth(String username, String password)
|
| 219 |
209
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bojilova
|
throws RemoteException {
|
| 220 |
411
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bojilova
|
// synchronized(this) {
|
| 221 |
|
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int srbconn = 0;
|
| 222 |
294
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bojilova
|
|
| 223 |
411
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bojilova
|
// look up for SRBJavaGlue
|
| 224 |
|
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try {
|
| 225 |
|
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String name = "//" + RMIhost + "/SrbJavaGlue";
|
| 226 |
|
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srbJG = (SrbJavaGlueInterface)Naming.lookup(name);
|
| 227 |
|
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} catch (Exception e) {
|
| 228 |
|
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try {
|
| 229 |
|
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rmicon.restart();
|
| 230 |
|
|
} catch (Exception rmie) {}
|
| 231 |
|
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// The SRB server is not running or it is busy now
|
| 232 |
|
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throw new
|
| 233 |
294
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bojilova
|
RemoteException("MetaCatSession look up for SrbJavaGlue failed");
|
| 234 |
411
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bojilova
|
}
|
| 235 |
|
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|
| 236 |
|
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// try SRB RMI Connection
|
| 237 |
|
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// integer value of the SBR Connection ID is returned only
|
| 238 |
|
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try {
|
| 239 |
|
|
srbconn = srbJG.rmiConnectJ( srbHost, srbPort, password, username );
|
| 240 |
|
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} catch (RemoteException e) {
|
| 241 |
|
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try {
|
| 242 |
|
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rmicon.restart();
|
| 243 |
|
|
} catch (Exception rmie) {}
|
| 244 |
|
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throw new RemoteException("MetaCatSession.userAuth() - " +
|
| 245 |
|
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"Error on rmiConnectJ(): " + e.getMessage());
|
| 246 |
|
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}
|
| 247 |
209
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bojilova
|
|
| 248 |
411
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bojilova
|
// check if successfull
|
| 249 |
|
|
if ( srbconn == 0 ) {
|
| 250 |
|
|
throw new RemoteException("The SRB Server is not running or it is busy now");
|
| 251 |
|
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} else if ( srbconn < 0 ) {
|
| 252 |
|
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try {
|
| 253 |
|
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rmicon.restart();
|
| 254 |
|
|
} catch (Exception rmie) {}
|
| 255 |
|
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return false;
|
| 256 |
|
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}
|
| 257 |
209
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bojilova
|
|
| 258 |
411
|
bojilova
|
// get the Group name of connected user;
|
| 259 |
|
|
String groupname = null;
|
| 260 |
|
|
try {
|
| 261 |
|
|
groupname = getGroupname(srbconn, username);
|
| 262 |
|
|
this.session.setAttribute("groupname", groupname);
|
| 263 |
|
|
} catch (RemoteException e) {
|
| 264 |
|
|
throw new RemoteException("MetaCatSession.userAuth() - " +
|
| 265 |
|
|
"Error on getGroupname(): " + e.getMessage());
|
| 266 |
|
|
}
|
| 267 |
|
|
// get all users and groups from MCAT
|
| 268 |
|
|
Stack usersGroupsList = new Stack();
|
| 269 |
|
|
try {
|
| 270 |
|
|
usersGroupsList = getUsersGroups(srbconn);
|
| 271 |
|
|
this.session.setAttribute("usersgroups", usersGroupsList);
|
| 272 |
|
|
} catch (RemoteException e) {
|
| 273 |
|
|
throw new RemoteException("MetaCatSession.userAuth() - " +
|
| 274 |
|
|
"Error on getUsersGroups(): " + e.getMessage());
|
| 275 |
|
|
}
|
| 276 |
|
|
|
| 277 |
209
|
bojilova
|
|
| 278 |
411
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bojilova
|
// we don't need that connection. close it.
|
| 279 |
|
|
try {
|
| 280 |
|
|
int err = srbJG.rmiFinishJ( srbconn );
|
| 281 |
|
|
} catch (RemoteException e) {}
|
| 282 |
209
|
bojilova
|
|
| 283 |
411
|
bojilova
|
// store SRB Connection in the session for later use if necessary
|
| 284 |
|
|
this.session.setAttribute("srbconnection", new Integer(srbconn));
|
| 285 |
|
|
|
| 286 |
|
|
// try {
|
| 287 |
|
|
// wait(5000);
|
| 288 |
|
|
// } catch (Exception e) {}
|
| 289 |
|
|
// try {
|
| 290 |
|
|
// notifyAll();
|
| 291 |
|
|
// } catch (Exception e) {}
|
| 292 |
|
|
return true;
|
| 293 |
|
|
|
| 294 |
|
|
// } // end of synchronized(this)
|
| 295 |
209
|
bojilova
|
}
|
| 296 |
234
|
bojilova
|
|
| 297 |
411
|
bojilova
|
// get the Groupname of connected user
|
| 298 |
|
|
private String getGroupname (int conn, String username)
|
| 299 |
|
|
throws RemoteException
|
| 300 |
|
|
{
|
| 301 |
|
|
|
| 302 |
|
|
String[] qval;
|
| 303 |
|
|
int[] qvalInx;
|
| 304 |
|
|
int[] selVal;
|
| 305 |
|
|
|
| 306 |
|
|
qval = new String [3];
|
| 307 |
|
|
qval[0] = new String (" not like '%$deleted%'");
|
| 308 |
|
|
qval[1] = new String (" = '" + username + "'");
|
| 309 |
|
|
qval[2] = new String (" <> 'public'");
|
| 310 |
|
|
|
| 311 |
|
|
qvalInx = new int[3];
|
| 312 |
|
|
qvalInx[0] = USER_NAME;
|
| 313 |
|
|
qvalInx[1] = USER_NAME;
|
| 314 |
|
|
qvalInx[2] = USER_GROUP_NAME;
|
| 315 |
|
|
|
| 316 |
|
|
selVal = new int[2];
|
| 317 |
|
|
selVal[0] = USER_GROUP_NAME;
|
| 318 |
|
|
selVal[1] = USER_NAME;
|
| 319 |
|
|
|
| 320 |
|
|
// generate a query and get the resultset
|
| 321 |
|
|
Stack selRes = new Stack();
|
| 322 |
|
|
selRes = getGenQueResult (conn, qval, qvalInx, selVal);
|
| 323 |
|
|
String dummy = (String)selRes.pop();
|
| 324 |
|
|
return (String)selRes.pop();
|
| 325 |
|
|
}
|
| 326 |
|
|
|
| 327 |
|
|
// get all users and groups from MCAT
|
| 328 |
|
|
private Stack getUsersGroups (int conn)
|
| 329 |
|
|
throws RemoteException
|
| 330 |
|
|
{
|
| 331 |
|
|
|
| 332 |
|
|
String[] qval;
|
| 333 |
|
|
int[] qvalInx;
|
| 334 |
|
|
int[] selVal;
|
| 335 |
|
|
|
| 336 |
|
|
qval = new String [1];
|
| 337 |
|
|
qval[0] = new String (" not like '%$deleted%'");
|
| 338 |
|
|
//qval[1] = new String (" <> 'public'");
|
| 339 |
|
|
|
| 340 |
|
|
qvalInx = new int[1];
|
| 341 |
|
|
qvalInx[0] = USER_NAME;
|
| 342 |
|
|
//qvalInx[1] = USER_GROUP_NAME;
|
| 343 |
|
|
|
| 344 |
|
|
selVal = new int[2];
|
| 345 |
|
|
selVal[0] = USER_GROUP_NAME;
|
| 346 |
|
|
selVal[1] = USER_NAME;
|
| 347 |
|
|
|
| 348 |
|
|
// generate a query and get the resultset
|
| 349 |
|
|
Stack selRes = new Stack();
|
| 350 |
|
|
selRes = getGenQueResult (conn, qval, qvalInx, selVal);
|
| 351 |
|
|
return selRes;
|
| 352 |
|
|
}
|
| 353 |
|
|
|
| 354 |
|
|
// try to generate query and run and retrieve all rows
|
| 355 |
|
|
private Stack getGenQueResult(int conn, String[] qval,
|
| 356 |
|
|
int qvalInx[], int selVal[])
|
| 357 |
|
|
throws RemoteException
|
| 358 |
|
|
{
|
| 359 |
|
|
|
| 360 |
|
|
int queResultCount = 0;
|
| 361 |
|
|
int queResultIndex = 0;
|
| 362 |
|
|
int selLen = selVal.length;
|
| 363 |
|
|
String[] queResult = new String[selLen];
|
| 364 |
|
|
Stack resultset = new Stack();
|
| 365 |
|
|
String currGroupname = null;
|
| 366 |
|
|
|
| 367 |
|
|
// get first row
|
| 368 |
|
|
try {
|
| 369 |
|
|
queResultCount = srbJG.srbGenQuery( conn, 0, qval, qvalInx, selVal);
|
| 370 |
|
|
for (int i = 0; i < selLen; i++) {
|
| 371 |
|
|
queResult[i] = srbJG.getGenQueResultJ(i, queResultIndex);
|
| 372 |
|
|
}
|
| 373 |
|
|
resultset.push("<groupname>" + queResult[0] + "</groupname>");
|
| 374 |
|
|
resultset.push("<username>" + queResult[1] + "</username>");
|
| 375 |
|
|
currGroupname = queResult[0];
|
| 376 |
|
|
queResultIndex++;
|
| 377 |
|
|
|
| 378 |
|
|
// get next rows
|
| 379 |
|
|
while (queResult != null) {
|
| 380 |
|
|
if ( queResultIndex >= queResultCount ) {
|
| 381 |
|
|
queResultIndex = 0;
|
| 382 |
|
|
queResultCount = srbJG.getMoreGenQueRowsJ( conn, 0);
|
| 383 |
|
|
if (queResultCount <= 0) {
|
| 384 |
|
|
return resultset;
|
| 385 |
|
|
}
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
for (int i = 0; i < selLen; i++) {
|
| 389 |
|
|
queResult[i] = srbJG.getGenQueResultJ(i, queResultIndex);
|
| 390 |
|
|
}
|
| 391 |
|
|
if ( !currGroupname.equals(queResult[0]) ) {
|
| 392 |
|
|
resultset.push("<groupname>" + queResult[0] + "</groupname>");
|
| 393 |
|
|
currGroupname = queResult[0];
|
| 394 |
|
|
}
|
| 395 |
|
|
resultset.push("<username>" + queResult[1] + "</username>");
|
| 396 |
|
|
queResultIndex++;
|
| 397 |
|
|
}
|
| 398 |
|
|
} catch (RemoteException e) {
|
| 399 |
|
|
throw new RemoteException(e.getMessage());
|
| 400 |
|
|
}
|
| 401 |
|
|
|
| 402 |
|
|
return resultset;
|
| 403 |
|
|
}
|
| 404 |
|
|
|
| 405 |
|
|
|
| 406 |
209
|
bojilova
|
/**
|
| 407 |
|
|
* Invalidate this HTTPSession object.
|
| 408 |
|
|
* All objects stored in the session are unbound
|
| 409 |
|
|
*/
|
| 410 |
411
|
bojilova
|
private void disconnect() {
|
| 411 |
209
|
bojilova
|
|
| 412 |
|
|
this.session.invalidate();
|
| 413 |
|
|
}
|
| 414 |
|
|
|
| 415 |
411
|
bojilova
|
}
|