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Whitelisting more builtin primitives #1435

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Nov 28, 2016
Merged

Whitelisting more builtin primitives #1435

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37 changes: 22 additions & 15 deletions redash/query_runner/python.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,11 @@ def __call__(self):


class Python(BaseQueryRunner):
safe_builtins = (
'sorted', 'reversed', 'min', 'max',
'sum', 'set',
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To be explicit, sum and set are the additions here.

)

@classmethod
def configuration_schema(cls):
return {
Expand Down Expand Up @@ -190,17 +195,23 @@ def run_query(self, query, user):

code = compile_restricted(query, '<string>', 'exec')

safe_builtins["_write_"] = self.custom_write
safe_builtins["__import__"] = self.custom_import
safe_builtins["_getattr_"] = getattr
safe_builtins["getattr"] = getattr
safe_builtins["_setattr_"] = setattr
safe_builtins["setattr"] = setattr
safe_builtins["_getitem_"] = self.custom_get_item
safe_builtins["_getiter_"] = self.custom_get_iter
safe_builtins["_print_"] = self._custom_print

restricted_globals = dict(__builtins__=safe_builtins)
builtins = safe_builtins.copy()
builtins["_write_"] = self.custom_write
builtins["__import__"] = self.custom_import
builtins["_getattr_"] = getattr
builtins["getattr"] = getattr
builtins["_setattr_"] = setattr
builtins["setattr"] = setattr
builtins["_getitem_"] = self.custom_get_item
builtins["_getiter_"] = self.custom_get_iter
builtins["_print_"] = self._custom_print

# Layer in our own additional set of builtins that we have
# considered safe.
for key in self.safe_builtins:
builtins[key] = __builtins__[key]

restricted_globals = dict(__builtins__=builtins)
restricted_globals["get_query_result"] = self.get_query_result
restricted_globals["execute_query"] = self.execute_query
restricted_globals["add_result_column"] = self.add_result_column
Expand All @@ -216,10 +227,6 @@ def run_query(self, query, user):
restricted_globals["TYPE_DATE"] = TYPE_DATE
restricted_globals["TYPE_FLOAT"] = TYPE_FLOAT

restricted_globals["sorted"] = sorted
restricted_globals["reversed"] = reversed
restricted_globals["min"] = min
restricted_globals["max"] = max

# TODO: Figure out the best way to have a timeout on a script
# One option is to use ETA with Celery + timeouts on workers
Expand Down