Fail SmsManager requests if SubId is not active.

If subId is not active, expected subIds can be assigned to the messages being
processed due to SmsManager calls. The change will fail any SmsManager calls
if SubId is not active.

Bug: 18629526
Change-Id: I8da1b1e2c477f32dcbaff417fc4e14ba2a225414

1 files changed, 14 insertions, 0 deletions

diff --git a/telephony/java/android/telephony/SubscriptionManager.java b/telephony/java/android/telephony/SubscriptionManager.java
index aca94e9..88ca8a4 100644
--- a/telephony/java/android/telephony/SubscriptionManager.java
+++ b/telephony/java/android/telephony/SubscriptionManager.java
@@ -1133,5 +1133,19 @@ public class SubscriptionManager {
         logd("getSimStateForSubscriber: simState=" + simState + " subId=" + subId);
         return simState;
     }
+
+    /**
+     * @return true if the sub ID is active. i.e. The sub ID corresponds to a known subscription
+     * and the SIM providing the subscription is present in a slot and in "LOADED" state.
+     * @hide
+     */
+    public boolean isActiveSubId(int subId) {
+        try {
+            ISub iSub = ISub.Stub.asInterface(ServiceManager.getService("isub"));
+            return iSub.isActiveSubId(subId);
+        } catch (RemoteException ex) {
+        }
+        return false;
+    }
 }