civi forces permission check on the image callback, so need to create a...

civi forces permission check on the image callback, so need to create a permission that can be assigned to anonymous & authenticated users

cdntaxreceipts.php

@@ -138,6 +138,7 @@ function cdntaxreceipts_civicrm_permission( &$permissions ) {
   $prefix = ts('CiviCRM CDN Tax Receipts') . ': ';
   $permissions += array(
     'issue cdn tax receipts' => $prefix . ts('Issue Tax Receipts', array('domain' => 'org.civicrm.cdntaxreceipts')),
+    'track cdn tax receipts' => $prefix . ts('Open Tracking', array('domain' => 'org.civicrm.cdntaxreceipts')),
   );
 }
 

xml/Menu/cdntaxreceipts.xml

@@ -16,6 +16,6 @@
     <path>civicrm/cdntaxreceipts/open</path>
     <page_callback>CRM_Cdntaxreceipts_Page_OpenEvent</page_callback>
     <title>OpenEvent</title>
-    <access_arguments></access_arguments>
+    <access_arguments>track cdn tax receipts</access_arguments>
   </item>
 </menu>