Add TV devices that have MdnsOffloadManagerService to APF exempt list

For Panel TV devices, the vendor can implemented TV specific mDNS
offload instead of APF in U. If TV specific mDNS offload is implemented.
MdnsOffloadManagerService will exist in the system ext partition. The
APF vts will be skipped if MdnsOffloadManagerService exist.

Bug: 283038712
Test: atest VtsHalWifiStaIfaceTargetTest
Change-Id: If55ec42507460b9a2c6eee683d85b8109f2af236
diff --git a/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp b/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
index f12d873..1ea1237 100644
--- a/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
+++ b/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <cctype>
 #include <vector>
 
 #include <VtsCoreUtil.h>
@@ -68,6 +69,50 @@
 
     std::shared_ptr<IWifiStaIface> wifi_sta_iface_;
 
+    // Checks if the MdnsOffloadManagerService is installed.
+    bool isMdnsOffloadServicePresent() {
+        int status =
+                // --query-flags MATCH_SYSTEM_ONLY(1048576) will only return matched service
+                // installed on system or system_ext partition. The MdnsOffloadManagerService should
+                // be installed on system_ext partition.
+                // NOLINTNEXTLINE(cert-env33-c)
+                system("pm query-services --query-flags 1048576"
+                       " com.android.tv.mdnsoffloadmanager/"
+                       "com.android.tv.mdnsoffloadmanager.MdnsOffloadManagerService"
+                       " | egrep -q mdnsoffloadmanager");
+        return status == 0;
+    }
+
+    // Detected panel TV device by using ro.oem.key1 property.
+    // https://docs.partner.android.com/tv/build/platform/props-vars/ro-oem-key1
+    bool isPanelTvDevice() {
+        const std::string oem_key1 = getPropertyString("ro.oem.key1");
+        if (oem_key1.size() < 9) {
+            return false;
+        }
+        if (oem_key1.substr(0, 3) != "ATV") {
+            return false;
+        }
+        const std::string psz_string = oem_key1.substr(6, 3);
+        // If PSZ string contains non digit, then it is not a panel TV device.
+        for (char ch : psz_string) {
+            if (!isdigit(ch)) {
+                return false;
+            }
+        }
+        // If PSZ is "000", then it is not a panel TV device.
+        if (psz_string == "000") {
+            return false;
+        }
+        return true;
+    }
+
+    std::string getPropertyString(const char* property_name) {
+        char property_string_raw_bytes[PROPERTY_VALUE_MAX] = {};
+        int len = property_get(property_name, property_string_raw_bytes, "");
+        return std::string(property_string_raw_bytes, len);
+    }
+
   private:
     const char* getInstanceName() { return GetParam().c_str(); }
 };
@@ -99,6 +144,11 @@
  */
 // @VsrTest = 5.3.12
 TEST_P(WifiStaIfaceAidlTest, CheckApfIsSupported) {
+    // Flat panel TV devices that support MDNS offload do not have to implement APF if the WiFi
+    // chipset does not have sufficient RAM to do so.
+    if (isPanelTvDevice() && isMdnsOffloadServicePresent()) {
+        GTEST_SKIP() << "Panel TV supports mDNS offload. It is not required to support APF";
+    }
     int vendor_api_level = property_get_int32("ro.vendor.api_level", 0);
     // Before VSR 14, APF support is optional.
     if (vendor_api_level < __ANDROID_API_U__) {