MailcapActivationReader.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */



package org.openspcoop2.utils.dch;

import java.net.URL;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.openspcoop2.utils.Utilities;
import org.openspcoop2.utils.UtilsException;


/**
 * Classe che permette di leggere il file mailcap presente nel MANIFEST di OpenSPCoop.ear
 *
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */

public class MailcapActivationReader {
   
     private static Map<String, String> mimeTypes = new HashMap<>();
    
     public static void initDataContentHandler(Logger log,boolean forceLoadMailcap) throws UtilsException{
          try
            {
              DataContentHandlerManager dchManager = new DataContentHandlerManager(log);
              List<String> typesRegistrati = dchManager.readMimeTypesRegistrati(true);
              
              java.io.InputStream is = MailcapActivationReader.class.getResourceAsStream("/META-INF/mailcap");
              java.util.Properties prop= new java.util.Properties();
              prop.load(is);
              Enumeration<?> en =  prop.keys();
              while (en.hasMoreElements()){
                  String key = (String) en.nextElement();
                  int index = key.indexOf(";;");
                  if(index==-1){
                      throw new Exception("Entry "+key+(String) prop.get(key)+ " definita con un formato scorretto [;;] (vedi javax/activation/MailcapCommandMap api)");
                  }
                  String keyMime = key.substring(0,index);
                  keyMime = keyMime.trim();
                 
                  String value = (String) prop.get(key);
                  index = value.indexOf("=");
                  if(index==-1){
                      throw new Exception("Entry "+key+(String) prop.get(key)+ " definita con un formato scorretto [=] (vedi javax/activation/MailcapCommandMap api)");
                  }
                  value=value.substring(index+1,value.length());
                  value=value.trim();
                  
                  MailcapActivationReader.mimeTypes.put(keyMime, value);
                  
                  if(typesRegistrati.contains(keyMime)==false){
                      if(forceLoadMailcap){
                         log.info("DataContentHandler per mime-type "+keyMime+" non risulta registrato, caricamento in corso ...");             
                         // La chiave non possiede il valore originale. Mancano i caratteri dopo la spazio: dchManager.addMimeTypeIntoMailcap(key+"="+value);
                         URL url = MailcapActivationReader.class.getResource("/META-INF/mailcap");
                         byte [] mailcap = Utilities.getAsByteArray(url);
                         dchManager.addMimeTypesIntoMailcap(mailcap);
                      }
                      else{
                          log.error("DataContentHandler per mime-type "+keyMime+" non risulta registrato");                   
                      }
                  }
                  
                  log.info("Caricato nel core di OpenSPCoop (!!differente dal MailcapEngine!!) DataContentHandler per mime-type "+keyMime+" gestito tramite la classe "+value);
              }
            }
            catch(Exception e)
            {
                throw new UtilsException(e.getMessage(),e);
            }
        }

   
     public static boolean existsDataContentHandler(String mimeType){
         return MailcapActivationReader.mimeTypes.containsKey(mimeType);
     }
}