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metacat / lib / style / skins / sbclter / templates / jsp / include_session_vars.jsp @ 4351

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<%@ page import="edu.ucsb.nceas.metacat.client.*" %>
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<% 
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 /**
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  *  '$RCSfile: include_session_vars.jsp,v $'
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  *      Authors: Matt Jones, Chad Berkley
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  *    Copyright: 2000 Regents of the University of California and the
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  *               National Center for Ecological Analysis and Synthesis
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  *  For Details: http://www.nceas.ucsb.edu/
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  *
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  *   '$Author: cjones $'
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  *     '$Date: 2004/10/05 23:50:45 $'
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  * '$Revision: 1.1 $'
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  * 
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  * This program is free software; you can redistribute it and/or modify
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  * it under the terms of the GNU General Public License as published by
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  * the Free Software Foundation; either version 2 of the License, or
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  * (at your option) any later version.
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  *
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  * This program is distributed in the hope that it will be useful,
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  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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  * GNU General Public License for more details.
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  *
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  * You should have received a copy of the GNU General Public License
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  * along with this program; if not, write to the Free Software
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  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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  *
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  * This is an XSLT (http://www.w3.org/TR/xslt) stylesheet designed to
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  * convert an XML file showing the resultset of a query
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  * into an HTML format suitable for rendering with modern web browsers.
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  */
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  //////////////////////////////////////////////////////////////////////////////
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  //
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  // NOTE:
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  //
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  //  GLOBAL CONSTANTS (SETTINGS SUCH AS METACAT URL, LDAP DOMAIN  AND DEBUG 
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  //  SWITCH) ARE ALL IN THE INCLUDE FILE "PORTAL_SETTINGS.jsp"
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  //
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  //////////////////////////////////////////////////////////////////////////////
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  // GLOBAL VARIABLES //////////////////////////////////////////////////////////
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  String      loginStatus              = null;
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  String      sess_sessionId           = null;
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  String      sessionidField           = null;
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  String      metacatResponse          = null;
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  String      posted_ldapUserName      = null;
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  String      typedUserName            = null;
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  String      posted_organization      = null;
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  String      posted_password          = null;
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  String      loginAction              = null;
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  String      loginButtonLabel         = null;
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  String      loginEnabledDisabled     = null;
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  Metacat     metacat                  = null;
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  HttpSession rfSession                = null;
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  boolean     isLoggedIn               = false;
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  //////////////////////////////////////////////////////////////////////////////  
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  try {
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    rfSession = request.getSession(true);
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  } catch(Exception e) {
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    throw new ServletException("trying to get session: "+e);
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  }
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  Object sess_sessionIdObj = rfSession.getAttribute("sess_sessionIdObj");
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  if (sess_sessionIdObj!=null) {
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    sess_sessionId = (String)sess_sessionIdObj;
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    // if sess_sessionIdObj is empty string, that means user has logged out
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    // (had problems if I set it to null, so used empty string instead)
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    if (sess_sessionId.length() < 1) sess_sessionId = null;
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    else isLoggedIn = true;
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  } else {
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    sess_sessionId = null;
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  }
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  typedUserName   = request.getParameter("username");
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  typedUserName   = (typedUserName!=null)? typedUserName.trim() : "";
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  posted_organization = request.getParameter("organization");
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  posted_organization = (posted_organization!=null)? posted_organization.trim() : "";
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  posted_ldapUserName = "uid=" + typedUserName 
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                        + ",o=" + posted_organization + LDAP_DOMAIN;
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  posted_password = request.getParameter("password");
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  posted_password = (posted_password!=null)? posted_password.trim() : "";
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  loginAction     = request.getParameter("loginAction");
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  loginAction     = (loginAction!=null)? loginAction.trim() : "";
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  //////////////////////////////////////////////////////////////////////////////  
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  if (loginAction.equals(LOGOUT_LABEL)) { 
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  // DO LOGOUT //////////////////////////////////////////////////////////////    
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    if (sess_sessionId!=null && rfSession.getAttribute("sess_metacatObj")!=null) {
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      metacat = (Metacat)(rfSession.getAttribute("sess_metacatObj"));
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      metacat.logout();      
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    }
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    sess_sessionId = null;
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    rfSession.setAttribute("sess_sessionIdObj", "");
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    isLoggedIn = false;
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  } else if (loginAction.equals(LOGIN_LABEL)) {  
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  // DO LOGIN ////////////////////////////////////////////////////////////////  
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    if (sess_sessionId!=null) isLoggedIn = true;    
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    else {
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      // get metacat object - either cached from session...
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      if (rfSession.getAttribute("sess_metacatObj")!=null) {
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        metacat = (Metacat)(rfSession.getAttribute("sess_metacatObj"));
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      } else {   // ...or create it if it doesn't already exist
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        try {
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          metacat = MetacatFactory.createMetacatConnection(SERVLET_URL);
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        } catch (MetacatInaccessibleException mie) {
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          throw new ServletException("Metacat connection to "+SERVLET_URL
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                                                +" failed." + mie.getMessage());
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        }
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        if (metacat==null) {
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          throw new ServletException("Metacat connection to "+SERVLET_URL
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                                          +" failed - Metacat object is NULL!");
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        }
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        rfSession.setAttribute("sess_metacatObj", metacat);
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      }
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      // now do login...
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      try {
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          metacatResponse = metacat.login(posted_ldapUserName, posted_password);
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          if (metacatResponse!=null && metacatResponse.indexOf("<login>") >= 0) {
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            sess_sessionId = metacat.getSessionId();
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            rfSession.setAttribute("sess_sessionIdObj", 
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                                  ((sess_sessionId!=null)? sess_sessionId: "") );
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            isLoggedIn = true;
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          } else {
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            loginStatus = "<em class=\"italic\">Incorrect username or password - please try again</em>";
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            isLoggedIn = false;
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          }
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      } catch (MetacatAuthException mae) {
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          loginStatus = "<em class=\"italic\">Incorrect username or password! - please try again</em>";
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          isLoggedIn = false;
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      } catch (MetacatInaccessibleException mie) {
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          isLoggedIn = false;
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          loginStatus = "<em class=\"italic\">ERROR logging in - problems connecting - please try later</em>";
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      }
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    }
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  }
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  //////////////////////////////////////////////////////////////////////////////  
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  if (isLoggedIn) {
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    loginButtonLabel     = LOGOUT_LABEL;
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    loginEnabledDisabled = "disabled";
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    if (sess_sessionId!=null && sess_sessionId.length()>0) {
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      sessionidField = "<input type=\"hidden\" name=\"sessionid\"     value=\""
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                                                          +sess_sessionId+"\">";
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    } else {
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      sessionidField = "";
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    }
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    // if loginStatus has already been set above, don't overwrite it...
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    if (loginStatus==null) loginStatus 
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                          = "<em class=\"italic\">logged in as: " +posted_ldapUserName+"</em>";
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  } else {
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    loginButtonLabel     = LOGIN_LABEL;
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    loginEnabledDisabled = "";
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    sessionidField = "";
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    // if loginStatus has already been set above, don't overwrite it...
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    if (loginStatus==null) loginStatus 
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                      = "<em class=\"italic\">Not logged in: </em>";
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  }
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  if (DEBUG_TO_BROWSER) {
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%>  
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<div id="debug">              
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  <ul>
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    <li>SERVLET_URL:&nbsp;<%=SERVLET_URL%></li>
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    <li>rfSession:&nbsp;<%=rfSession%></li>
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    <li>metacatResponse:&nbsp;<%=metacatResponse%></li>
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    <li>posted_ldapUserName:&nbsp;<%=posted_ldapUserName%></li>
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    <li>posted_password:&nbsp;<%=posted_password%></li>
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    <li>isLoggedIn:&nbsp;<%=isLoggedIn%></li>
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    <li>sess_sessionId LOCAL:&nbsp;<%=sess_sessionId%></li>
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    <li>sess_sessionIdObj FROM SESSION:&nbsp;<%=rfSession.getAttribute("sess_sessionIdObj")%></li>
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  </ul>
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</div>
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<%
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  }
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%>