Fix anonymous connection in LDAP

 - when LDAP server connection is globally anonymous, one should still be able to validate user/password
 - minor fix in SchedulerBackupRunner

(cherry picked from commit 1c30edaf)

common/common-client/src/main/java/org/ow2/proactive/authentication/LDAPLoginModule.java

@@ -435,7 +435,7 @@ public abstract class LDAPLoginModule extends FileLoginModule implements Loggabl
             logger.debug("check password for user: " + userDN);
         }
 
-        ContextHandler handler = createLdapContext(userDN, password);
+        ContextHandler handler = createLdapContext(userDN, password, true);
         closeContext(handler);
         return handler != null;
     }
@@ -459,15 +459,19 @@ public abstract class LDAPLoginModule extends FileLoginModule implements Loggabl
         }
     }
 
-    private ContextHandler createLdapContext(String user, String password) {
+    private ContextHandler createLdapContext(String user, String password, boolean requireAuthentication) {
         LdapContext ctx = null;
         StartTlsResponse tls = null;
 
         Hashtable<String, String> env = createBasicEnvForInitalContext();
         try {
             if (!START_TLS) {
-                if (!AUTHENTICATION_METHOD.equals(ANONYMOUS_LDAP_CONNECTION)) {
-                    env.put(Context.SECURITY_AUTHENTICATION, AUTHENTICATION_METHOD);
+                if (requireAuthentication || !AUTHENTICATION_METHOD.equals(ANONYMOUS_LDAP_CONNECTION)) {
+                    if (requireAuthentication) {
+                        env.put(Context.SECURITY_AUTHENTICATION, "simple");
+                    } else {
+                        env.put(Context.SECURITY_AUTHENTICATION, AUTHENTICATION_METHOD);
+                    }
                     env.put(Context.SECURITY_PRINCIPAL, user);
                     env.put(Context.SECURITY_CREDENTIALS, password);
                 }
@@ -500,8 +504,12 @@ public abstract class LDAPLoginModule extends FileLoginModule implements Loggabl
                 } else {
                     tls.negotiate();
                 }
-                if (!AUTHENTICATION_METHOD.equals(ANONYMOUS_LDAP_CONNECTION)) {
-                    ctx.addToEnvironment(Context.SECURITY_AUTHENTICATION, AUTHENTICATION_METHOD);
+                if (requireAuthentication || !AUTHENTICATION_METHOD.equals(ANONYMOUS_LDAP_CONNECTION)) {
+                    if (requireAuthentication) {
+                        env.put(Context.SECURITY_AUTHENTICATION, "simple");
+                    } else {
+                        ctx.addToEnvironment(Context.SECURITY_AUTHENTICATION, AUTHENTICATION_METHOD);
+                    }
                     ctx.addToEnvironment(Context.SECURITY_PRINCIPAL, user);
                     ctx.addToEnvironment(Context.SECURITY_CREDENTIALS, password);
                 }
@@ -595,7 +603,7 @@ public abstract class LDAPLoginModule extends FileLoginModule implements Loggabl
      */
     private ContextHandler connectAndGetContext() throws NamingException {
         // Create the initial directory context
-        return createLdapContext(BIND_LOGIN, BIND_PASSWD);
+        return createLdapContext(BIND_LOGIN, BIND_PASSWD, false);
     }
 
     /**

scheduler/scheduler-server/src/main/java/org/ow2/proactive/scheduler/core/SchedulerBackupRunner.java

@@ -127,8 +127,7 @@ public class SchedulerBackupRunner implements Runnable {
             File backupFile = new File(resolvedDestination, backupFileName);
             LOGGER.info("Performing backup to " + backupFile);
             String[] foldersToZip = targets.stream()
-                                           .map(target -> (new File(PASchedulerProperties.SCHEDULER_HOME.getValueAsString(),
-                                                                    target)).getAbsolutePath())
+                                           .map(target -> PASchedulerProperties.getAbsolutePath(target))
                                            .toArray(String[]::new);
             LOGGER.info("Backup of the following folders : " + Arrays.toString(foldersToZip));
             try {