Index: topia/src/java/org/codelutin/topia/TopiaContext.java
diff -u topia/src/java/org/codelutin/topia/TopiaContext.java:1.32 topia/src/java/org/codelutin/topia/TopiaContext.java:1.33
--- topia/src/java/org/codelutin/topia/TopiaContext.java:1.32	Wed Sep 15 15:26:22 2004
+++ topia/src/java/org/codelutin/topia/TopiaContext.java	Fri Apr 29 16:00:39 2005
@@ -23,25 +23,31 @@
  *
  * @author Benjamin Poussin <poussin@codelutin.com>
  * Copyright Code Lutin
- * @version $Revision: 1.32 $
+ * @version $Revision: 1.33 $
  *
- * Mise a jour: $Date: 2004/09/15 15:26:22 $
- * par : $Author: bpoussin $
+ * Mise a jour: $Date: 2005/04/29 16:00:39 $
+ * par : $Author: thimel $
  */
 
 package org.codelutin.topia;
 
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.List;
+import java.util.Properties;
+import java.util.Vector;
+
 import org.codelutin.topia.distribution.AbstractDistributionHelper;
-import org.codelutin.topia.persistence.AbstractPersistenceHelper;
-import org.codelutin.topia.persistence.PersistenceHelper;
 import org.codelutin.topia.hook.HookHelper;
+import org.codelutin.topia.persistence.PersistenceHelper;
+import org.codelutin.topia.security.TopiaSecurityException;
+import org.codelutin.topia.security.TopiaUserPrincipal;
 import org.codelutin.util.CategorisedListenerSet;
-import java.lang.reflect.Constructor;
-import java.util.logging.Logger;
-import java.util.logging.Level;
-import java.util.Properties;
 
-public class TopiaContext { // TopiaContext
+public abstract class TopiaContext { // TopiaContext
 
     protected PersistenceHelper persistenceHelper = null;
     protected AbstractDistributionHelper distributionHelper = null;
@@ -218,6 +224,63 @@
     TopiaEntity createEntity(Class entityClass) throws TopiaException {
         return (TopiaEntity)contextHelper.getInstance(entityClass);
     }
-
+    
+    public List authenticate(String login, String password)
+    	throws TopiaSecurityException {
+       String authType = properties.getProperty("topia.auth.type");
+       if ("simple".equalsIgnoreCase(authType)) {
+          return simpleAuthentication(login, password);
+       } else  if ("ldap".equalsIgnoreCase(authType)) {
+          return ldapAuthentication(login, password);
+       } else  if ("xmi".equalsIgnoreCase(authType)) {
+          return xmiAuthentication(login, password);
+       }
+       throw new TopiaSecurityException("Invalid auth type : " + authType);
+    }
+    
+    protected List simpleAuthentication(String login, String password)
+    	throws TopiaSecurityException {
+		  Properties props = new Properties();
+		  String fileName = properties.getProperty("topia.auth.simple.file");
+		  if (fileName == null)
+		     throw new  TopiaSecurityException(
+		           "Authentication filename must be specified");
+		  try {
+		     props.load(new FileInputStream(fileName)); 
+       	  } catch(FileNotFoundException e) {
+             throw new TopiaSecurityException(
+                   "Invalid authentication file : " + fileName);
+          } catch(IOException ioe) {
+             throw new TopiaSecurityException(
+                   "Unable to read authentication file : " + fileName);
+          }
+          String hashMode = properties.getProperty("topia.auth.simple.hash");
+          if (hashMode != null) {
+             try {
+                password = new String(MessageDigest.getInstance(hashMode)
+                      .digest(password.getBytes()));
+             } catch (NoSuchAlgorithmException nsaE) {
+                throw new TopiaSecurityException(
+                      "Invalid hash algorithm : " +hashMode);
+             }
+          }
+          if (!password.equals(props.getProperty(login)))
+             throw new TopiaSecurityException("Wrong Login/Password");
+          Vector principals = new Vector();
+          principals.addElement(new TopiaUserPrincipal(login));
+//        TODO Arno : ajouter la liste des GroupPrincipals
+          return principals;
+    }
+    
+    protected List ldapAuthentication(String login, String password)
+    	throws TopiaSecurityException {
+       throw new TopiaSecurityException("ldapAuthentication not supported");
+       //TODO Arno ;)
+    }
+    
+    protected abstract List xmiAuthentication(String login, String password)
+    	throws TopiaSecurityException;
+    
+    
 } // TopiaContext