Skip subscription-user association check for emergency sms.

Bug: 270340388
Test: Manually sending/receiving SMS/MMS,
atest com.android.providers.telephony.SmsProviderTest,
atest com.android.providers.telephony.MmsProviderTest,
atest com.android.providers.telephony.ProviderUtilTest,
atest CtsTelephonyProviderTestCases,
atest CtsTelephonyTestCases

Change-Id: Iecf9a0e3187b2c74faf29bc7b3ac419f04009e6b

1 files changed, 28 insertions, 0 deletions

diff --git a/telephony/common/com/android/internal/telephony/TelephonyPermissions.java b/telephony/common/com/android/internal/telephony/TelephonyPermissions.java
index 86623599d984..905a90c11957 100644
--- a/telephony/common/com/android/internal/telephony/TelephonyPermissions.java
+++ b/telephony/common/com/android/internal/telephony/TelephonyPermissions.java
@@ -842,6 +842,34 @@ public final class TelephonyPermissions {
 
     /**
      * Check if calling user is associated with the given subscription.
+     * Subscription-user association check is skipped if destination address is an emergency number.
+     *
+     * @param context Context
+     * @param subId subscription ID
+     * @param callerUserHandle caller user handle
+     * @param destAddr destination address of the message
+     * @return  true if destAddr is an emergency number
+     * and return false if user is not associated with the subscription.
+     */
+    public static boolean checkSubscriptionAssociatedWithUser(@NonNull Context context, int subId,
+            @NonNull UserHandle callerUserHandle, @NonNull String destAddr) {
+        // Skip subscription-user association check for emergency numbers
+        TelephonyManager tm = context.getSystemService(TelephonyManager.class);
+        final long token = Binder.clearCallingIdentity();
+        try {
+            if (tm != null && tm.isEmergencyNumber(destAddr)) {
+                Log.d(LOG_TAG, "checkSubscriptionAssociatedWithUser:"
+                        + " destAddr is emergency number");
+                return true;
+            }
+        }   finally {
+            Binder.restoreCallingIdentity(token);
+        }
+        return checkSubscriptionAssociatedWithUser(context, subId, callerUserHandle);
+    }
+
+    /**
+     * Check if calling user is associated with the given subscription.
      * @param context Context
      * @param subId subscription ID
      * @param callerUserHandle caller user handle