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metacat / lib / style / skins / default / session_vars.jsp @ 5810

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<%@ page import="edu.ucsb.nceas.metacat.client.*" %>
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<% 
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 /**
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  *  '$RCSfile$'
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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: daigle $'
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  *     '$Date: 2008-04-02 16:28:31 -0700 (Wed, 02 Apr 2008) $'
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  * '$Revision: 3780 $'
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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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  String      relativeRoot          = ".";
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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=\"loginStatus\">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=\"loginStatus\">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=\"loginStatus\">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=\"loginStatus\">You ARE logged in</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=\"loginStatus\">You are NOT logged in</em>";
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	}
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  if (DEBUG_TO_BROWSER) {
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%>	
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<table>							
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	<tr> 
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		<td colspan="4" align="left" valign="top" class="text_plain" bgcolor="#ffff00">
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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></td>
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  </tr>
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</table>
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<%
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  }
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%>