Make delivery receipts work correctly on CDMA networks

Fixes #7646

src/org/thoughtcrime/securesms/service/SmsDeliveryListener.java

@@ -7,6 +7,7 @@ import android.telephony.SmsMessage;
 import android.util.Log;
 
 import org.thoughtcrime.securesms.ApplicationContext;
+import org.thoughtcrime.securesms.database.SmsDatabase;
 import org.thoughtcrime.securesms.jobs.SmsSentJob;
 import org.whispersystems.jobqueue.JobManager;
 
@@ -43,7 +44,21 @@ public class SmsDeliveryListener extends BroadcastReceiver {
           break;
         }
 
-        jobManager.add(new SmsSentJob(context, messageId, DELIVERED_SMS_ACTION, message.getStatus()));
+        int status = message.getStatus();
+
+        Log.w(TAG, "Original status: " + status);
+
+        // Note: https://developer.android.com/reference/android/telephony/SmsMessage.html#getStatus()
+        //       " CDMA: For not interfering with status codes from GSM, the value is shifted to the bits 31-16"
+        // Note: https://stackoverflow.com/a/33240109
+        if ("3gpp2".equals(intent.getStringExtra("format"))) {
+          Log.w(TAG, "Correcting for CDMA delivery receipt...");
+          if      (status >> 24 <= 0) status = SmsDatabase.Status.STATUS_COMPLETE;
+          else if (status >> 24 == 2) status = SmsDatabase.Status.STATUS_PENDING;
+          else if (status >> 24 == 3) status = SmsDatabase.Status.STATUS_FAILED;
+        }
+
+        jobManager.add(new SmsSentJob(context, messageId, DELIVERED_SMS_ACTION, status));
         break;
       default:
         Log.w(TAG, "Unknown action: " + intent.getAction());