rpcclient: add darwin_network for wifi scan

src/rpcclient/rpcclient/client/darwin_client.py

@@ -6,6 +6,7 @@
 from rpcclient.client.client import Client
 from rpcclient.darwin_fs import DarwinFs
 from rpcclient.darwin_media import DarwinMedia
+from rpcclient.darwin_network import DarwinNetwork
 from rpcclient.darwin_processes import DarwinProcesses
 from rpcclient.exceptions import RpcClientException
 from rpcclient.preferences import Preferences
@@ -40,6 +41,7 @@ def __init__(self, sock, sysname: str, hostname: str, port: int = None):
         self.prefs = Preferences(self)
         self.processes = DarwinProcesses(self)
         self.media = DarwinMedia(self)
+        self.network = DarwinNetwork(self)
 
     @property
     def modules(self) -> typing.List[str]:

src/rpcclient/rpcclient/darwin_network.py

@@ -0,0 +1,29 @@
+from collections import namedtuple
+from typing import List
+
+from rpcclient.exceptions import RpcClientException
+from rpcclient.network import Network
+
+WifiNetwork = namedtuple('WifiNetwork', 'ssid bssid rssi')
+
+
+class DarwinNetwork(Network):
+    def __init__(self, client):
+        super().__init__(client)
+
+        if 0 == client.dlopen('/System/Library/Frameworks/CoreWLAN.framework/Versions/A/CoreWLAN', 2):
+            raise RpcClientException('failed to load CoreWLAN')
+
+    def scan(self, iface: str) -> List[WifiNetwork]:
+        """ perform wifi scan on selected interface """
+        result = []
+        CWInterface = self._client.symbols.objc_getClass('CWInterface')
+        iface = CWInterface.objc_call('alloc').objc_call('initWithInterfaceName:', self._client.cf(iface))
+        networks = iface.objc_call('scanForNetworksWithName:error:', 0, 0).objc_call('allObjects')
+
+        for i in range(networks.objc_call('count')):
+            network = networks.objc_call('objectAtIndex:', i)
+            result.append(WifiNetwork(ssid=network.objc_call('ssidData').py, bssid=network.objc_call('bssid').py,
+                                      rssi=network.objc_call('rssiValue').c_int64))
+
+        return result

src/rpcclient/rpcclient/symbol.py

@@ -209,7 +209,7 @@ def cfdesc(self):
         """
         if self == 0:
             return None
-        return self._client.symbols.CFCopyDescription(self).cfstr.peek_str()
+        return self._client.symbols.CFCopyDescription(self).py
 
     @property
     def py(self):