1 package com.android.nfc; 2 3 4 import android.content.Context; 5 import android.os.UserHandle; 6 7 public class NfcPermissions { 8 9 /** 10 * NFC ADMIN permission - only for system apps 11 */ 12 private static final String ADMIN_PERM = android.Manifest.permission.WRITE_SECURE_SETTINGS; 13 private static final String ADMIN_PERM_ERROR = "WRITE_SECURE_SETTINGS permission required"; 14 15 /** 16 * Regular NFC permission 17 */ 18 static final String NFC_PERMISSION = android.Manifest.permission.NFC; 19 private static final String NFC_PERM_ERROR = "NFC permission required"; 20 21 public static void validateUserId(int userId) { 22 if (userId != UserHandle.getCallingUserId()) { 23 throw new SecurityException("userId passed in is not the calling user."); 24 } 25 } 26 27 public static void enforceAdminPermissions(Context context) { 28 context.enforceCallingOrSelfPermission(ADMIN_PERM, ADMIN_PERM_ERROR); 29 } 30 31 32 public static void enforceUserPermissions(Context context) { 33 context.enforceCallingOrSelfPermission(NFC_PERMISSION, NFC_PERM_ERROR); 34 } 35 } 36
