NetworkKey: migrate from ScanResult.wifiSsid to SSID

wifiSsid is an @hide field, migrate to getter method.

Bug: 144311098
Test: atest NetworkKeyTest
Change-Id: Ic689e12b8de4af52fae26c25bc90c8eb093ad3fe

core/java/android/net/NetworkKey.java

@@ -21,7 +21,7 @@ import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.net.wifi.ScanResult;
 import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiSsid;
+import android.net.wifi.WifiManager;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.text.TextUtils;
@@ -69,22 +69,25 @@ public class NetworkKey implements Parcelable {
      */
     @Nullable
     public static NetworkKey createFromScanResult(@Nullable ScanResult result) {
-        if (result != null && result.wifiSsid != null) {
+        if (result == null) {
-            final String ssid = result.wifiSsid.toString();
+            return null;
+        }
+        final String ssid = result.SSID;
+        if (TextUtils.isEmpty(ssid) || ssid.equals(WifiManager.UNKNOWN_SSID)) {
+            return null;
+        }
         final String bssid = result.BSSID;
-            if (!TextUtils.isEmpty(ssid) && !ssid.equals(WifiSsid.NONE)
+        if (TextUtils.isEmpty(bssid)) {
-                    && !TextUtils.isEmpty(bssid)) {
+            return null;
-                WifiKey wifiKey;
+        }
+
         try {
-                    wifiKey = new WifiKey(String.format("\"%s\"", ssid), bssid);
+            WifiKey wifiKey = new WifiKey(String.format("\"%s\"", ssid), bssid);
+            return new NetworkKey(wifiKey);
         } catch (IllegalArgumentException e) {
             Log.e(TAG, "Unable to create WifiKey.", e);
             return null;
         }
-                return new NetworkKey(wifiKey);
-            }
-        }
-        return null;
     }
 
     /**
@@ -100,7 +103,7 @@ public class NetworkKey implements Parcelable {
         if (wifiInfo != null) {
             final String ssid = wifiInfo.getSSID();
             final String bssid = wifiInfo.getBSSID();
-            if (!TextUtils.isEmpty(ssid) && !ssid.equals(WifiSsid.NONE)
+            if (!TextUtils.isEmpty(ssid) && !ssid.equals(WifiManager.UNKNOWN_SSID)
                     && !TextUtils.isEmpty(bssid)) {
                 WifiKey wifiKey;
                 try {

core/tests/coretests/src/android/net/NetworkKeyTest.java

@@ -22,7 +22,7 @@ import static org.mockito.Mockito.when;
 
 import android.net.wifi.ScanResult;
 import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiSsid;
+import android.net.wifi.WifiManager;
 
 import androidx.test.runner.AndroidJUnit4;
 
@@ -65,7 +65,7 @@ public class NetworkKeyTest {
 
     @Test
     public void createFromWifi_noneSsid() throws Exception {
-        when(mWifiInfo.getSSID()).thenReturn(WifiSsid.NONE);
+        when(mWifiInfo.getSSID()).thenReturn(WifiManager.UNKNOWN_SSID);
         when(mWifiInfo.getBSSID()).thenReturn(VALID_BSSID);
         assertNull(NetworkKey.createFromWifiInfo(mWifiInfo));
     }
@@ -106,7 +106,7 @@ public class NetworkKeyTest {
     }
 
     @Test
-    public void createFromScanResult_nullWifiSsid() {
+    public void createFromScanResult_nullSsid() {
         ScanResult scanResult = new ScanResult();
         scanResult.BSSID = VALID_BSSID;
 
@@ -114,18 +114,18 @@ public class NetworkKeyTest {
     }
 
     @Test
-    public void createFromScanResult_emptyWifiSsid() {
+    public void createFromScanResult_emptySsid() {
         ScanResult scanResult = new ScanResult();
-        scanResult.wifiSsid = WifiSsid.createFromAsciiEncoded("");
+        scanResult.SSID = "";
         scanResult.BSSID = VALID_BSSID;
 
         assertNull(NetworkKey.createFromScanResult(scanResult));
     }
 
     @Test
-    public void createFromScanResult_noneWifiSsid() {
+    public void createFromScanResult_noneSsid() {
         ScanResult scanResult = new ScanResult();
-        scanResult.wifiSsid = WifiSsid.createFromAsciiEncoded(WifiSsid.NONE);
+        scanResult.SSID = WifiManager.UNKNOWN_SSID;
         scanResult.BSSID = VALID_BSSID;
 
         assertNull(NetworkKey.createFromScanResult(scanResult));
@@ -134,7 +134,7 @@ public class NetworkKeyTest {
     @Test
     public void createFromScanResult_nullBssid() {
         ScanResult scanResult = new ScanResult();
-        scanResult.wifiSsid = WifiSsid.createFromAsciiEncoded(VALID_UNQUOTED_SSID);
+        scanResult.SSID = VALID_UNQUOTED_SSID;
 
         assertNull(NetworkKey.createFromScanResult(scanResult));
     }
@@ -142,7 +142,7 @@ public class NetworkKeyTest {
     @Test
     public void createFromScanResult_emptyBssid() {
         ScanResult scanResult = new ScanResult();
-        scanResult.wifiSsid = WifiSsid.createFromAsciiEncoded(VALID_UNQUOTED_SSID);
+        scanResult.SSID = VALID_UNQUOTED_SSID;
         scanResult.BSSID = "";
 
         assertNull(NetworkKey.createFromScanResult(scanResult));
@@ -151,16 +151,16 @@ public class NetworkKeyTest {
     @Test
     public void createFromScanResult_invalidBssid() {
         ScanResult scanResult = new ScanResult();
-        scanResult.wifiSsid = WifiSsid.createFromAsciiEncoded(VALID_UNQUOTED_SSID);
+        scanResult.SSID = VALID_UNQUOTED_SSID;
         scanResult.BSSID = INVALID_BSSID;
 
         assertNull(NetworkKey.createFromScanResult(scanResult));
     }
 
     @Test
-    public void createFromScanResult_validWifiSsid() {
+    public void createFromScanResult_validSsid() {
         ScanResult scanResult = new ScanResult();
-        scanResult.wifiSsid = WifiSsid.createFromAsciiEncoded(VALID_UNQUOTED_SSID);
+        scanResult.SSID = VALID_UNQUOTED_SSID;
         scanResult.BSSID = VALID_BSSID;
 
         NetworkKey expected = new NetworkKey(new WifiKey(VALID_SSID, VALID_BSSID));

services/tests/servicestests/src/com/android/server/NetworkScoreServiceTest.java

@@ -43,7 +43,6 @@ import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
-import android.content.pm.PackageManagerInternal;
 import android.content.res.Resources;
 import android.net.INetworkRecommendationProvider;
 import android.net.INetworkScoreCache;
@@ -56,6 +55,7 @@ import android.net.WifiKey;
 import android.net.wifi.ScanResult;
 import android.net.wifi.WifiConfiguration;
 import android.net.wifi.WifiInfo;
+import android.net.wifi.WifiManager;
 import android.net.wifi.WifiSsid;
 import android.os.Binder;
 import android.os.Handler;
@@ -722,7 +722,7 @@ public class NetworkScoreServiceTest {
 
     @Test
     public void testCurrentNetworkScoreCacheFilter_invalidWifiInfo_noneSsid() throws Exception {
-        when(mWifiInfo.getSSID()).thenReturn(WifiSsid.NONE);
+        when(mWifiInfo.getSSID()).thenReturn(WifiManager.UNKNOWN_SSID);
         NetworkScoreService.CurrentNetworkScoreCacheFilter cacheFilter =
                 new NetworkScoreService.CurrentNetworkScoreCacheFilter(() -> mWifiInfo);
 
@@ -796,7 +796,7 @@ public class NetworkScoreServiceTest {
         List<ScanResult> invalidScanResults = Lists.newArrayList(
                 new ScanResult(),
                 createScanResult("", SCORED_NETWORK.networkKey.wifiKey.bssid),
-                createScanResult(WifiSsid.NONE, SCORED_NETWORK.networkKey.wifiKey.bssid),
+                createScanResult(WifiManager.UNKNOWN_SSID, SCORED_NETWORK.networkKey.wifiKey.bssid),
                 createScanResult(SSID, null),
                 createScanResult(SSID, INVALID_BSSID)
         );