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root/IoTa-DiscoveryWS/IoTa-DiscoveryWS/src/main/java/fr/unicaen/iota/discovery/server/query/DSPEP.java @ 2e0a7cb1

/*
* This program is a part of the IoTa Project.
*
* Copyright © 2008-2012 Université de Caen Basse-Normandie, GREYC
* Copyright © 2008-2012 Orange Labs
*
* 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 3 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.
* <http://www.gnu.org/licenses/>
*
* See AUTHORS for a list of contributors.
*/
package fr.unicaen.iota.discovery.server.query;

import com.sun.xacml.ctx.RequestCtx;
import com.sun.xacml.ctx.Result;
import fr.unicaen.iota.discovery.server.hibernate.User;
import fr.unicaen.iota.discovery.server.util.Constants;
import fr.unicaen.iota.discovery.server.util.XACMLUtils;
import fr.unicaen.iota.xacml.pep.MethodNamesCapture;
import fr.unicaen.iota.xacml.pep.MethodNamesQuery;
import fr.unicaen.iota.xacml.pep.XACMLDSEvent;
import fr.unicaen.iota.xacml.request.EventRequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
* This class is used to manage the DS access control policy
*/
public class DSPEP implements MethodNamesQuery, MethodNamesCapture {

private static final Log log = LogFactory.getLog(DSPEP.class);

/**
* process access control policy for the Hello method.
* @param userId connected user
* @param partnerId corresponding partnerId
* @param module Query, Capture or Admin
* @return
*/
@Override
public int hello(String userId, String partnerId, String module) {
log.trace("process hello policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "hello", partnerId, module);
return processXACMLRequest(eventRequest);
}

/**
* process access control policy for the partnerInfo method.
* @param userId connected user
* @param partnerId partner concerned by the request
* @param module Query, Capture or Admin
* @return
*/
@Override
public int partnerInfo(String userId, String partnerId, String module) {
log.trace("process partnerInfo policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "partnerInfo", partnerId, module);
return processXACMLRequest(eventRequest);
}

/**
* process access control policy for the eventLookup method for each retrieved event retriefed.
* @param userId connected user
* @param dsEvent the event
* @param module Query, Capture or Admin
* @return
*/
@Override
public int eventLookup(String userId, XACMLDSEvent dsEvent, String module) {
log.trace("process eventLookup policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "eventLookup", dsEvent, module);
return processXACMLRequest(eventRequest);
}

/**
* process access control policy for the eventInfo method.
* @param userId connected user
* @param dsEvent
* @param module
* @return
*/
@Override
public int eventInfo(String userId, XACMLDSEvent dsEvent, String module) {
log.trace("process eventInfo policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "eventInfo", dsEvent, module);
return processXACMLRequest(eventRequest);
}

@Override
public int eventCreate(String userId, XACMLDSEvent dsEvent, String module) {
log.trace("process eventCreate policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "eventCreate", dsEvent, module);
return processXACMLRequest(eventRequest);
}

@Override
public int voidEvent(String userId, XACMLDSEvent dsEvent, String module) {
log.trace("process voidEvent policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "voidEvent", dsEvent, module);
return processXACMLRequest(eventRequest);
}

@Override
public int multipleEventCreate(String userId, XACMLDSEvent dsEvent, String module) {
log.trace("process multipleEventCreate policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "eventLookup", dsEvent, module);
return processXACMLRequest(eventRequest);
}

public int userLookup(String userId, String partner, String module) {
log.trace("process userLookup policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "userLookup", partner, module);
return processXACMLRequest(eventRequest);
}

public int userCreate(String userId, String partner, String module) {
log.trace("process userCreate policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "userCreate", partner, module);
return processXACMLRequest(eventRequest);
}

public int userInfo(String userId, String partner, String module) {
log.trace("process userInfo policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "userInfo", partner, module);
return processXACMLRequest(eventRequest);
}

public int userUpdate(String userId, String partner, String module) {
log.trace("process userUpdate policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "userUpdate", partner, module);
return processXACMLRequest(eventRequest);
}

public int userDelete(String userId, String partner, String module) {
log.trace("process userDelete policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "userDelete", partner, module);
return processXACMLRequest(eventRequest);
}

public int partnerUpdate(String userId, String partner, String module) {
log.trace("process partnerUpdate policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "partnerUpdate", partner, module);
return processXACMLRequest(eventRequest);
}

public int partnerLookup(String userId, String partner, String module) {
log.trace("process partnerLookup policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "partnerLookup", partner, module);
return processXACMLRequest(eventRequest);
}

public int partnerDelete(String userId, String partner, String module) {
log.trace("process partnerDelete policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "partnerDelete", partner, module);
return processXACMLRequest(eventRequest);
}

public int partnerCreate(String userId, String partner, String module) {
log.trace("process partnerCreate policy for user: " + userId);
EventRequest eventRequest = new EventRequest(userId, "partnerCreate", partner, module);
return processXACMLRequest(eventRequest);
}

private String sendXACMLRequest(RequestCtx xacmlReq) throws IOException {
Socket socket = new Socket(Constants.XACML_ADDRESS, Constants.XACML_PORT);
BufferedReader socketReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
xacmlReq.encode(socket.getOutputStream());
String response = socketReader.readLine();
socket.close();
return response;
}

private int processXACMLRequest(EventRequest eventRequest) {
String response = "DENY";
try {
if (!Constants.USE_XACML) {
return Result.DECISION_PERMIT;
}
response = sendXACMLRequest(eventRequest.createRequest());
} catch (IOException ex) {
log.error(null, ex);
}
return XACMLUtils.createXACMLResponse(response);
}

public boolean isRootAccess(String sessionId, String module) {
User u = fr.unicaen.iota.discovery.server.util.Session.getUser(sessionId);
log.trace("process checkRootAccess policy for user: " + u.getUserID());
EventRequest eventRequest = new EventRequest(u.getUserID(), "superadmin", u.getPartner().getPartnerID(), module);
return processXACMLRequest(eventRequest) == Result.DECISION_PERMIT;
}
}
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