fix: fall back to radio channel when AP iface lacks channel

payload/user/remote_access/pager-webui/server.py

@@ -1658,8 +1658,9 @@ def h_pineap_wifi_get_ap(ctx):
             except (TypeError, ValueError):
                 return None
 
-        open_channel = _chan(open_cfg)
-        wpa_channel = _chan(wpa_cfg)
+        radio_channel = _chan(radio_cfg)
+        open_channel = _chan(open_cfg) or radio_channel
+        wpa_channel = _chan(wpa_cfg) or radio_channel
         encryption = wpa_cfg.get('encryption') or ''
         if encryption.startswith('psk2'):
             encryption = 'psk2'

tests/test_pineap_bands.py

@@ -159,5 +159,38 @@ class GetApRadio1AbsentTest(unittest.TestCase):
         self.assertEqual(payload['wpa']['channel'], 1)
 
 
+class GetApRadioChannelFallbackTest(unittest.TestCase):
+    """Regression: iface without a channel option inherits the radio channel."""
+
+    def _uci(self, section):
+        table = {
+            'radio0': {'type': 'wifi-device', 'band': '2g', 'channel': '11',
+                       'htmode': 'HT20', 'country': 'US'},
+            'radio1': {'type': 'wifi-device', 'band': '5g', 'channel': 'auto',
+                       'htmode': 'VHT80', 'country': 'US'},
+            'wlan0open': {'device': 'radio0', 'mode': 'ap', 'ssid': 'pager-open',
+                          'disabled': '0', 'hidden': '0', 'encryption': 'none'},
+            'wlan0wpa': {'device': 'radio0', 'mode': 'ap', 'ssid': 'Service',
+                         'disabled': '0', 'hidden': '0', 'encryption': 'psk2',
+                         'key': 'testpass123'},
+        }
+        return dict(table.get(section, {}))
+
+    def setUp(self):
+        server._uci_wifi_iface = lambda name: self._uci(name)
+        server.daemon_sock_call = lambda method, path, body=None, timeout=10: (
+            404, {'error': 'not found'})
+
+    def test_open_falls_back_to_radio_channel(self):
+        status, payload = server.h_pineap_wifi_get_ap(ctx())
+        self.assertEqual(status, 200)
+        self.assertEqual(payload['open']['channel'], 11)
+
+    def test_wpa_falls_back_to_radio_channel(self):
+        status, payload = server.h_pineap_wifi_get_ap(ctx())
+        self.assertEqual(status, 200)
+        self.assertEqual(payload['wpa']['channel'], 11)
+
+
 if __name__ == '__main__':
     unittest.main()