feat: resolve recon device manufacturers locally

tests/test_recon.py

@@ -896,6 +896,58 @@ class OuiVendorTest(unittest.TestCase):
         self.assertEqual(server.oui_vendor(None), 'Unknown')
         self.assertEqual(server.oui_vendor('--'), 'Unknown')
 
+    def test_oui_identity_prefers_nmap_then_macchanger(self):
+        server._oui_identity_cache = None
+        files = {
+            '/nmap': 'C89E43 Apple Corporation\n',
+            '/mac': 'C89E43 fallback\n',
+        }
+        with mock.patch.object(server, 'OUI_DATA_PATHS', ['/nmap', '/mac']), \
+                mock.patch('builtins.open', side_effect=lambda p, *a, **k:
+                            mock.mock_open(read_data=files[p]).return_value):
+            value = server.oui_identity('C89E43648080')
+        self.assertEqual(value['manufacturer'], 'Apple Corporation')
+        self.assertEqual(value['source'], 'nmap')
+        self.assertIsNone(value['model'])
+
+    def test_oui_identity_uses_macchanger_when_nmap_is_missing(self):
+        server._oui_identity_cache = None
+        files = {'/mac': 'C8-9E-43 fallback\n'}
+
+        def open_file(path, *args, **kwargs):
+            if path not in files:
+                raise OSError('missing')
+            return mock.mock_open(read_data=files[path]).return_value
+
+        with mock.patch.object(server, 'OUI_DATA_PATHS', ['/nmap', '/mac']), \
+                mock.patch('builtins.open', side_effect=open_file):
+            value = server.oui_identity('C89E43648080')
+        self.assertEqual(value['manufacturer'], 'fallback')
+        self.assertEqual(value['source'], 'macchanger')
+
+    def test_oui_identity_handles_missing_files_unknown_and_local(self):
+        server._oui_identity_cache = None
+        with mock.patch.object(server, 'OUI_DATA_PATHS', ['/missing']), \
+                mock.patch('builtins.open', side_effect=OSError('missing')):
+            unknown = server.oui_identity('AC:BB:CC:00:00:01')
+        self.assertEqual(unknown['manufacturer'], 'Unknown')
+        self.assertEqual(unknown['source'], 'unknown')
+        self.assertEqual(unknown['oui'], 'ACBBCC')
+        self.assertIsNone(unknown['model'])
+
+        local = server.oui_identity('02:11:22:33:44:55')
+        self.assertEqual(local['manufacturer'], 'Local/Randomized')
+        self.assertEqual(local['source'], 'local')
+        self.assertEqual(local['oui'], '021122')
+
+    def test_oui_identity_falls_back_to_builtin_vendors(self):
+        server._oui_identity_cache = None
+        with mock.patch.object(server, 'OUI_DATA_PATHS', []):
+            value = server.oui_identity('B8:27:EB:00:00:00')
+        self.assertEqual(value['manufacturer'], 'Raspberry Pi')
+        self.assertEqual(value['source'], 'builtin')
+        self.assertIsNone(value['model'])
+
     def test_band_of_frequencies(self):
         self.assertEqual(server.band_of(2412), '2.4')
         self.assertEqual(server.band_of(5200), '5')