Gracefully shrug on database errors

program/include/rcube_mdb2.php

@@ -266,7 +266,9 @@ class rcube_mdb2
 
                 raise_error(array('code' => 500, 'type' => 'db',
                     'line' => __LINE__, 'file' => __FILE__,
-                    'message' => $this->db_error_msg), true, true);
+                    'message' => $this->db_error_msg), true, false);
+                
+                $result = false;
             }
             else {
                 $result = $q->execute($params);

program/include/rcube_user.php

@@ -288,7 +288,7 @@ class rcube_user
 
         // we'll not delete last identity
         if ($sql_arr['ident_count'] <= 1)
-            return false;
+            return -1;
 
         $this->db->query(
             "UPDATE ".get_table_name('identities').

program/localization/en_US/messages.inc

@@ -24,6 +24,7 @@ $messages['sessionerror'] = 'Your session is invalid or expired';
 $messages['imaperror'] = 'Connection to IMAP server failed';
 $messages['servererror'] = 'Server Error!';
 $messages['servererrormsg'] = 'Server Error: $msg';
+$messages['databaserror'] = 'Database Error!';
 $messages['errorreadonly'] = 'Unable to perform operation. Folder is read-only';
 $messages['errornoperm'] = 'Unable to perform operation. Permission denied';
 $messages['invalidrequest'] = 'Invalid request! No data was saved.';

program/steps/settings/delete_identity.inc

@@ -34,10 +34,10 @@ if ($iid && preg_match('/^[0-9]+(,[0-9]+)*$/', $iid))
   
   $deleted = !$plugin['abort'] ? $USER->delete_identity($iid) : $plugin['result'];
 
-  if ($deleted)
+  if ($deleted > 0 && $deleted !== false)
     $OUTPUT->show_message('deletedsuccessfully', 'confirmation', null, false);
   else
-    $OUTPUT->show_message($plugin['message'] ? $plugin['message'] : 'nodeletelastidentity', 'error', null, false);
+    $OUTPUT->show_message($plugin['message'] ? $plugin['message'] : ($deleted < 0 ? 'nodeletelastidentity' : 'errorsaving'), 'error', null, false);
 
   // send response
   if ($OUTPUT->ajax_call)

program/steps/settings/edit_identity.inc

@@ -28,7 +28,7 @@ if (($_GET['_iid'] || $_POST['_iid']) && $RCMAIL->action=='edit-identity') {
   if (is_array($IDENTITY_RECORD))
     $OUTPUT->set_env('iid', $IDENTITY_RECORD['identity_id']);
   else {
-    $OUTPUT->show_message('opnotpermitted', 'error');
+    $OUTPUT->show_message('databaserror', 'error');
     // go to identities page
     rcmail_overwrite_action('identities');
     return;