1 package com.android.internal.telephony; 2 3 import android.content.Context; 4 import android.provider.BlockedNumberContract; 5 import android.telephony.Rlog; 6 7 /** 8 * {@hide} Checks for blocked phone numbers against {@link BlockedNumberContract} 9 */ 10 public class BlockChecker { 11 private static final String TAG = "BlockChecker"; 12 private static final boolean VDBG = false; // STOPSHIP if true. 13 14 /** 15 * Returns {@code true} if {@code phoneNumber} is blocked. 16 * <p> 17 * This method catches all underlying exceptions to ensure that this method never throws any 18 * exception. 19 */ 20 public static boolean isBlocked(Context context, String phoneNumber) { 21 boolean isBlocked = false; 22 long startTimeNano = System.nanoTime(); 23 24 try { 25 if (BlockedNumberContract.SystemContract.shouldSystemBlockNumber( 26 context, phoneNumber)) { 27 Rlog.d(TAG, phoneNumber + " is blocked."); 28 isBlocked = true; 29 } 30 } catch (Exception e) { 31 Rlog.e(TAG, "Exception checking for blocked number: " + e); 32 } 33 34 int durationMillis = (int) ((System.nanoTime() - startTimeNano) / 1000000); 35 if (durationMillis > 500 || VDBG) { 36 Rlog.d(TAG, "Blocked number lookup took: " + durationMillis + " ms."); 37 } 38 return isBlocked; 39 } 40 } 41
