gcode: Validate extended g-code command names

Extended g-code command names may only contain A-Z, 0-9, and underscore. Signed-off-by: Kevin O'Connor <[email protected]>
Klipper3d · Nov 26, 2024 · a943462 · a943462
1 parent 5b494eb
commit a943462
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/klippy/gcode.py b/klippy/gcode.py
@@ -133,6 +133,9 @@ def register_command(self, cmd, func, when_not_ready=False, desc=None):
             raise self.printer.config_error(
                 "gcode command %s already registered" % (cmd,))
         if not self.is_traditional_gcode(cmd):
+            if cmd.upper() != cmd or not cmd.replace('_', '').isalnum():
+                raise self.printer.config_error(
+                    "Can't register '%s' as it is an invalid name" % (cmd,))
             origfunc = func
             func = lambda params: origfunc(self._get_extended_params(params))
         self.ready_gcode_handlers[cmd] = func