/*
************************************************************************
******************* CANADIAN ASTRONOMY DATA CENTRE *******************
************** CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES **************
*
* (c) 2014. (c) 2014.
* Government of Canada Gouvernement du Canada
* National Research Council Conseil national de recherches
* Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6
* All rights reserved Tous droits réservés
*
* NRC disclaims any warranties, Le CNRC dénie toute garantie
* expressed, implied, or énoncée, implicite ou légale,
* statutory, of any kind with de quelque nature que ce
* respect to the software, soit, concernant le logiciel,
* including without limitation y compris sans restriction
* any warranty of merchantability toute garantie de valeur
* or fitness for a particular marchande ou de pertinence
* purpose. NRC shall not be pour un usage particulier.
* liable in any event for any Le CNRC ne pourra en aucun cas
* damages, whether direct or être tenu responsable de tout
* indirect, special or general, dommage, direct ou indirect,
* consequential or incidental, particulier ou général,
* arising from the use of the accessoire ou fortuit, résultant
* software. Neither the name de l'utilisation du logiciel. Ni
* of the National Research le nom du Conseil National de
* Council of Canada nor the Recherches du Canada ni les noms
* names of its contributors may de ses participants ne peuvent
* be used to endorse or promote être utilisés pour approuver ou
* products derived from this promouvoir les produits dérivés
* software without specific prior de ce logiciel sans autorisation
* written permission. préalable et particulière
* par écrit.
*
* This file is part of the Ce fichier fait partie du projet
* OpenCADC project. OpenCADC.
*
* OpenCADC is free software: OpenCADC est un logiciel libre ;
* you can redistribute it and/or vous pouvez le redistribuer ou le
* modify it under the terms of modifier suivant les termes de
* the GNU Affero General Public la “GNU Affero General Public
* License as published by the License” telle que publiée
* Free Software Foundation, par la Free Software Foundation
* either version 3 of the : soit la version 3 de cette
* License, or (at your option) licence, soit (à votre gré)
* any later version. toute version ultérieure.
*
* OpenCADC is distributed in the OpenCADC est distribué
* hope that it will be useful, dans l’espoir qu’il vous
* but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE
* without even the implied GARANTIE : sans même la garantie
* warranty of MERCHANTABILITY implicite de COMMERCIALISABILITÉ
* or FITNESS FOR A PARTICULAR ni d’ADÉQUATION À UN OBJECTIF
* PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence
* General Public License for Générale Publique GNU Affero
* more details. pour plus de détails.
*
* You should have received Vous devriez avoir reçu une
* a copy of the GNU Affero copie de la Licence Générale
* General Public License along Publique GNU Affero avec
* with OpenCADC. If not, see OpenCADC ; si ce n’est
* . pas le cas, consultez :
* .
*
* $Revision: 4 $
*
************************************************************************
*/
package ca.nrc.cadc.ac.server.web;
import java.io.IOException;
import java.net.URI;
import java.security.AccessControlException;
import java.security.Principal;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.Set;
import java.util.TimeZone;
import javax.security.auth.Subject;
import javax.security.auth.x500.X500Principal;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import ca.nrc.cadc.ac.User;
import ca.nrc.cadc.ac.UserAlreadyExistsException;
import ca.nrc.cadc.ac.UserNotFoundException;
import ca.nrc.cadc.ac.server.ACScopeValidator;
import ca.nrc.cadc.ac.server.PluginFactory;
import ca.nrc.cadc.ac.server.UserPersistence;
import ca.nrc.cadc.auth.AuthenticationUtil;
import ca.nrc.cadc.auth.DelegationToken;
import ca.nrc.cadc.auth.HttpPrincipal;
import ca.nrc.cadc.auth.ServletPrincipalExtractor;
import ca.nrc.cadc.log.ServletLogInfo;
import ca.nrc.cadc.net.TransientException;
import ca.nrc.cadc.util.StringUtil;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Servlet to handle password resets. Passwords are an integral part of the
* access control system and are handled differently to accommodate stricter
* guidelines.
*
* This servlet handles GET and POST only. It relies on the Subject being set higher
* up by the AccessControlFilter as configured in the web descriptor.
*/
public class ResetPasswordServlet extends HttpServlet
{
private static final Logger log = Logger.getLogger(ResetPasswordServlet.class);
List privilegedSubjects;
UserPersistence userPersistence;
/**
* Servlet initialization method.
*
*
* Receives the servlet configuration object and initializes UserPersistence
* using input parameters read from it. Users who do augment
* subject calls are constructed by taking the principals out of the ServletConfig
* input parameter.
*
*
*
* The ResetPasswordServlet configuration in the web deployment descriptor file
* web.xml must have two input parameters:
*
*
ca.nrc.cadc.ac.server.web.ResetPasswordServlet.PrivilegedX500Principals
* is a list of trusted administrators DNs. It is a multi-line list with
* line breaks between the trusted DNs and each DN eclosed in double quotes.
*
ca.nrc.cadc.ac.server.web.ResetPasswordServlet.PrivilegedHttpPrincipals
* is a list of space separated userids (HTTP identities) corresponding
* to the previous DNs.
*
* The two lists of principal names must be of the same
* length and correspond to each other in order.
*
*
* @param config The servlet configuration object.
* @param response The HTTP Response.
*
* @throws javax.servlet.ServletException For general Servlet exceptions.
*/
@Override
public void init(final ServletConfig config) throws ServletException
{
super.init(config);
try
{
String x500Users = config.getInitParameter(ResetPasswordServlet.class.getName() + ".PrivilegedX500Principals");
log.debug("privilegedX500Users: " + x500Users);
String httpUsers = config.getInitParameter(ResetPasswordServlet.class.getName() + ".PrivilegedHttpPrincipals");
log.debug("privilegedHttpUsers: " + httpUsers);
List x500List = new ArrayList();
List httpList = new ArrayList();
if (x500Users != null && httpUsers != null)
{
Pattern pattern = Pattern.compile("([^\"]\\S*|\".+?\")\\s*");
Matcher x500Matcher = pattern.matcher(x500Users);
Matcher httpMatcher = pattern.matcher(httpUsers);
while (x500Matcher.find())
{
String next = x500Matcher.group(1);
x500List.add(next.replace("\"", ""));
}
while (httpMatcher.find())
{
String next = httpMatcher.group(1);
httpList.add(next.replace("\"", ""));
}
if (x500List.size() != httpList.size())
{
throw new RuntimeException("Init exception: Lists of augment subject principals not equivalent in length");
}
privilegedSubjects = new ArrayList(x500Users.length());
for (int i=0; i principals = extractor.getPrincipals();
for (Principal principal : principals)
{
if (principal instanceof X500Principal)
{
for (Subject s : privilegedSubjects)
{
Set x500Principals = s.getPrincipals(X500Principal.class);
for (X500Principal p2 : x500Principals)
{
if (p2.getName().equalsIgnoreCase(principal.getName()))
{
return true;
}
}
}
}
if (principal instanceof HttpPrincipal)
{
for (Subject s : privilegedSubjects)
{
Set httpPrincipals = s.getPrincipals(HttpPrincipal.class);
for (HttpPrincipal p2 : httpPrincipals)
{
if (p2.getName().equalsIgnoreCase(principal.getName()))
{
return true;
}
}
}
}
}
return false;
}
/**
* Handle a /ac GET operation. The subject provided is expected to be a privileged user.
*
* @param request The HTTP Request.
* @param response The HTTP Response.
* @throws ServletException Anything goes wrong at the Servlet level.
* @throws IOException Any reading/writing errors.
*/
@Override
protected void doGet(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException
{
final long start = System.currentTimeMillis();
final ServletLogInfo logInfo = new ServletLogInfo(request);
log.info(logInfo.start());
try
{
final Subject subject = getSubject(request);
logInfo.setSubject(subject);
if ((subject == null) || (subject.getPrincipals().isEmpty()))
{
logInfo.setMessage("Unauthorized subject");
response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
}
else
{
if (isPrivilegedSubject(request))
{
String token = (String) Subject.doAs(subject, new PrivilegedExceptionAction