AppOps: add permission check when enabing nfc

Add appops permission check for enable function.

Change-Id: Ie98be3e7b3cd9e72b0ad12cc1634d9cd1869a66c

Author: Kun Liang

core/java/android/nfc/NfcAdapter.java

@@ -22,6 +22,7 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.app.Activity;
 import android.app.ActivityThread;
+import android.app.AppOpsManager;
 import android.app.OnActivityPausedListener;
 import android.app.PendingIntent;
 import android.content.Context;
@@ -309,6 +310,7 @@ public final class NfcAdapter {
 
     final NfcActivityManager mNfcActivityManager;
     final Context mContext;
+    private final AppOpsManager mAppOps;
 
     /**
      * A callback to be invoked when the system finds a tag while the foreground activity is
@@ -512,6 +514,7 @@ public static NfcAdapter getDefaultAdapter() {
     NfcAdapter(Context context) {
         mContext = context;
         mNfcActivityManager = new NfcActivityManager(this);
+        mAppOps = (AppOpsManager)context.getSystemService(Context.APP_OPS_SERVICE);
     }
 
     /**
@@ -642,6 +645,9 @@ public int getAdapterState() {
      * @hide
      */
     public boolean enable() {
+        if (mAppOps.noteOp(AppOpsManager.OP_NFC_CHANGE) != AppOpsManager.MODE_ALLOWED){
+            return false;
+        }
         try {
             return sService.enable();
         } catch (RemoteException e) {

core/res/res/values-zh-rCN/cm_strings.xml

@@ -113,6 +113,7 @@
   <string name="app_ops_toggle_bluetooth">开启蓝牙</string>
   <string name="app_ops_toggle_mobile_data">开启移动数据</string>
   <string name="app_ops_toggle_wifi">开启 Wi-Fi</string>
+  <string name="app_ops_toggle_nfc">试图开关NFC</string>
   <string name="app_ops_use_alarm_volume">控制闹铃音量</string>
   <string name="app_ops_use_audio_focus">控制音频焦点</string>
   <string name="app_ops_use_bluetooth_volume">控制蓝牙音量</string>

core/res/res/values/cm_arrays.xml

@@ -104,6 +104,7 @@
         <item>@string/app_ops_read_mms</item>
         <item>@string/app_ops_write_mms</item>
         <item>@string/app_ops_start_at_bootup</item>
+        <item>@string/app_ops_toggle_nfc</item>
     </string-array>
 
 </resources>

core/res/res/values/cm_strings.xml

@@ -199,6 +199,7 @@
     <string name="app_ops_toggle_bluetooth">toggle Bluetooth</string>
     <string name="app_ops_toggle_mobile_data">toggle mobile data</string>
     <string name="app_ops_toggle_wifi">toggle WiFi</string>
+    <string name="app_ops_toggle_nfc">toggle NFC</string>
     <string name="app_ops_use_alarm_volume">control alarm volume</string>
     <string name="app_ops_use_audio_focus">control the audio focus</string>
     <string name="app_ops_use_bluetooth_volume">control the Bluetooth volume</string>