Improve Huawei LTE SSDP inclusion (#85572)

* Probe Huawei LTE API for device support on SSDP match

More or less as expected, the loosening of SSDP/UPnP data matches done
in #81643 started to yield false positives, as in #85402.

Coming up with robust matches solely based on the SSDP/UPnP data still
does not seem possible, so keep the matches as loose as they were made,
but additionally invoke a probe request on the API to determine if the
device looks like a supported one.

* Probe only after unique id checks

Prevents throwaway probes for discoveries already in progress.

* Fix SSDP result URL test, add missing assert on it

homeassistant/components/huawei_lte/config_flow.py

@@ -250,6 +250,24 @@ class ConfigFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
         await self.async_set_unique_id(unique_id)
         self._abort_if_unique_id_configured(updates={CONF_URL: url})
 
+        def _is_supported_device() -> bool:
+            """
+            See if we are looking at a possibly supported device.
+
+            Matching solely on SSDP data does not yield reliable enough results.
+            """
+            try:
+                with Connection(url=url, timeout=CONNECTION_TIMEOUT) as conn:
+                    basic_info = Client(conn).device.basic_information()
+            except ResponseErrorException:  # API compatible error
+                return True
+            except Exception:  # API incompatible error # pylint: disable=broad-except
+                return False
+            return isinstance(basic_info, dict)  # Crude content check
+
+        if not await self.hass.async_add_executor_job(_is_supported_device):
+            return self.async_abort(reason="unsupported_device")
+
         self.context.update(
             {
                 "title_placeholders": {

homeassistant/components/huawei_lte/strings.json

@@ -1,7 +1,8 @@
 {
   "config": {
     "abort": {
-      "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]"
+      "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]",
+      "unsupported_device": "Unsupported device"
     },
     "error": {
       "connection_timeout": "Connection timeout",

homeassistant/components/huawei_lte/translations/en.json

@@ -1,8 +1,8 @@
 {
     "config": {
         "abort": {
-            "not_huawei_lte": "Not a Huawei LTE device",
-            "reauth_successful": "Re-authentication was successful"
+            "reauth_successful": "Re-authentication was successful",
+            "unsupported_device": "Unsupported device"
         },
         "error": {
             "connection_timeout": "Connection timeout",

tests/components/huawei_lte/test_config_flow.py

@@ -211,9 +211,14 @@ async def test_success(hass, login_requests_mock):
 
 
 @pytest.mark.parametrize(
-    ("upnp_data", "expected_result"),
+    ("requests_mock_request_kwargs", "upnp_data", "expected_result"),
     (
         (
+            {
+                "method": ANY,
+                "url": f"{FIXTURE_USER_INPUT[CONF_URL]}api/device/basic_information",
+                "text": "<response><devicename>Mock device</devicename></response>",
+            },
             {
                 ssdp.ATTR_UPNP_FRIENDLY_NAME: "Mobile Wi-Fi",
                 ssdp.ATTR_UPNP_SERIAL: "00000000",
@@ -225,6 +230,11 @@ async def test_success(hass, login_requests_mock):
             },
         ),
         (
+            {
+                "method": ANY,
+                "url": f"{FIXTURE_USER_INPUT[CONF_URL]}api/device/basic_information",
+                "text": "<error><code>100002</code><message/></error>",
+            },
             {
                 ssdp.ATTR_UPNP_FRIENDLY_NAME: "Mobile Wi-Fi",
                 # No ssdp.ATTR_UPNP_SERIAL
@@ -235,19 +245,36 @@ async def test_success(hass, login_requests_mock):
                 "errors": {},
             },
         ),
+        (
+            {
+                "method": ANY,
+                "url": f"{FIXTURE_USER_INPUT[CONF_URL]}api/device/basic_information",
+                "exc": Exception("Something unexpected"),
+            },
+            {
+                # Does not matter
+            },
+            {
+                "type": data_entry_flow.FlowResultType.ABORT,
+                "reason": "unsupported_device",
+            },
+        ),
     ),
 )
-async def test_ssdp(hass, upnp_data, expected_result):
+async def test_ssdp(
+    hass, login_requests_mock, requests_mock_request_kwargs, upnp_data, expected_result
+):
     """Test SSDP discovery initiates config properly."""
-    url = "http://192.168.100.1/"
+    url = FIXTURE_USER_INPUT[CONF_URL][:-1]  # strip trailing slash for appending port
     context = {"source": config_entries.SOURCE_SSDP}
+    login_requests_mock.request(**requests_mock_request_kwargs)
     result = await hass.config_entries.flow.async_init(
         DOMAIN,
         context=context,
         data=ssdp.SsdpServiceInfo(
             ssdp_usn="mock_usn",
             ssdp_st="upnp:rootdevice",
-            ssdp_location="http://192.168.100.1:60957/rootDesc.xml",
+            ssdp_location=f"{url}:60957/rootDesc.xml",
             upnp={
                 ssdp.ATTR_UPNP_DEVICE_TYPE: "urn:schemas-upnp-org:device:InternetGatewayDevice:1",
                 ssdp.ATTR_UPNP_MANUFACTURER: "Huawei",
@@ -264,7 +291,7 @@ async def test_ssdp(hass, upnp_data, expected_result):
     for k, v in expected_result.items():
         assert result[k] == v
     if result.get("data_schema"):
-        result["data_schema"]({})[CONF_URL] == url
+        assert result["data_schema"]({})[CONF_URL] == url + "/"
 
 
 @pytest.mark.parametrize(