Removing untrusted .desktop custom icons

[Michael Pyne]

Seems to me the easiest way to implement not showing custom icons for 
untrusted .desktop application launchers is to tweak KFileItem with the 
following patch:

Index: kio/kio/kfileitem.cpp
===================================================================
--- kio/kio/kfileitem.cpp       (revision 932617)
+++ kio/kio/kfileitem.cpp       (working copy)
@@ -749,6 +749,8 @@
                 }
             }
         }
+    } else if ( cfg.hasApplicationType() && 
!KDesktopFile::isAuthorizedDesktopFile( path ) ) {
+        return QString("application-x-desktop");
     }
     return icon;
 }

I just use KDesktopFile::hasApplicationType() to see if I need to dig further, 
are there any other weird application launcher types that don't return true 
for hasApplicationType that I need to worry about?

Regards,
 - Michael Pyne
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