bugfix: handle kCFNull

src/rpcclient/rpcclient/darwin/client.py

@@ -41,6 +41,7 @@ def __init__(self, sock, sysname: str, hostname: str, port: int = None):
             raise MissingLibraryError('failed to load CoreFoundation')
 
         self._cf_types = {
+            self.symbols.CFNullGetTypeID(): 'null',
             self.symbols.CFDateGetTypeID(): 'date',
             self.symbols.CFDataGetTypeID(): 'data',
             self.symbols.CFStringGetTypeID(): 'str',

src/rpcclient/rpcclient/darwin/symbol.py

@@ -26,6 +26,9 @@ def cfdesc(self):
             return None
         return self._client.symbols.CFCopyDescription(self).py
 
+    def _decode_cfnull(self) -> None:
+        return None
+
     def _decode_cfstr(self) -> str:
         ptr = self._client.symbols.CFStringGetCStringPtr(self, 0)
         if ptr:
@@ -80,6 +83,7 @@ def py(self):
 
         t = self._client._cf_types[self._client.symbols.CFGetTypeID(self)]
         type_decoders = {
+            'null': self._decode_cfnull,
             'str': self._decode_cfstr,
             'bool': self._decode_cfbool,
             'number': self._decode_cfnumber,

src/rpcclient/tests/test_core_foundation_types.py

@@ -1,12 +1,16 @@
 import pytest
 
 
-@pytest.mark.parametrize('data', ['string',
-                                  b'bytes',
-                                  123,
-                                  0.1,
-                                  [0, 1, 'abc'],
-                                  {'key': 'value'},
-                                  [{'key': 'value'}, [1, 2]]])
+@pytest.mark.parametrize('data', [
+    None,
+    True,
+    False,
+    'string',
+    b'bytes',
+    123,
+    0.1,
+    [0, 1, 'abc'],
+    {'key': 'value'},
+    [{'key': 'value'}, [1, 2]]])
 def test_serialization(client, data):
     assert client.cf(data).py == data