Some fixes to SMS processing in the framework.

Always process class 0 and other unstored SMS (eg, MWI).  We were
rejecting all SMS messages in storage full situations, but certain
messages do not require storage.

Also, notify apps when the framework rejects MT SMS, with new
SMS_REJECTED_ACTION intent.

b/2066775
b/2015906

3 files changed, 57 insertions, 27 deletions

diff --git a/telephony/java/com/android/internal/telephony/SMSDispatcher.java b/telephony/java/com/android/internal/telephony/SMSDispatcher.java
index 7efaa2e..d26a092 100644
--- a/telephony/java/com/android/internal/telephony/SMSDispatcher.java
+++ b/telephony/java/com/android/internal/telephony/SMSDispatcher.java
@@ -150,7 +150,8 @@ public abstract class SMSDispatcher extends Handler {
     private static SmsMessage mSmsMessage;
     private static SmsMessageBase mSmsMessageBase;
     private SmsMessageBase.SubmitPduBase mSubmitPduBase;
-    private boolean mStorageAvailable = true;
+
+    protected boolean mStorageAvailable = true;
 
     protected static int getNextConcatenatedRef() {
         sConcatenatedRef += 1;
@@ -294,19 +295,15 @@ public abstract class SMSDispatcher extends Handler {
 
             sms = (SmsMessage) ar.result;
             try {
-                if (mStorageAvailable) {
-                    int result = dispatchMessage(sms.mWrappedSmsMessage);
-                    if (result != Activity.RESULT_OK) {
-                        // RESULT_OK means that message was broadcast for app(s) to handle.
-                        // Any other result, we should ack here.
-                        boolean handled = (result == Intents.RESULT_SMS_HANDLED);
-                        acknowledgeLastIncomingSms(handled, result, null);
-                    }
-                } else {
-                    acknowledgeLastIncomingSms(false, Intents.RESULT_SMS_OUT_OF_MEMORY, null);
+                int result = dispatchMessage(sms.mWrappedSmsMessage);
+                if (result != Activity.RESULT_OK) {
+                    // RESULT_OK means that message was broadcast for app(s) to handle.
+                    // Any other result, we should ack here.
+                    boolean handled = (result == Intents.RESULT_SMS_HANDLED);
+                    notifyAndAcknowledgeLastIncomingSms(handled, result, null);
                 }
             } catch (RuntimeException ex) {
-                acknowledgeLastIncomingSms(false, Intents.RESULT_SMS_GENERIC_ERROR, null);
+                notifyAndAcknowledgeLastIncomingSms(false, Intents.RESULT_SMS_GENERIC_ERROR, null);
             }
 
             break;
@@ -866,6 +863,25 @@ public abstract class SMSDispatcher extends Handler {
             int result, Message response);
 
     /**
+     * Notify interested apps if the framework has rejected an incoming SMS,
+     * and send an acknowledge message to the network.
+     * @param success indicates that last message was successfully received.
+     * @param result result code indicating any error
+     * @param response callback message sent when operation completes.
+     */
+    private void notifyAndAcknowledgeLastIncomingSms(boolean success,
+            int result, Message response) {
+        if (!success) {
+            // broadcast SMS_REJECTED_ACTION intent
+            Intent intent = new Intent(Intents.SMS_REJECTED_ACTION);
+            intent.putExtra("result", result);
+            mWakeLock.acquire(WAKE_LOCK_TIMEOUT);
+            mContext.sendBroadcast(intent, "android.permission.RECEIVE_SMS");
+        }
+        acknowledgeLastIncomingSms(success, result, response);
+    }
+
+    /**
      * Check if a SmsTracker holds multi-part Sms
      *
      * @param tracker a SmsTracker could hold a multi-part Sms
diff --git a/telephony/java/com/android/internal/telephony/cdma/CdmaSMSDispatcher.java b/telephony/java/com/android/internal/telephony/cdma/CdmaSMSDispatcher.java
index ca15a03..1e3a2e1 100644
--- a/telephony/java/com/android/internal/telephony/cdma/CdmaSMSDispatcher.java
+++ b/telephony/java/com/android/internal/telephony/cdma/CdmaSMSDispatcher.java
@@ -33,6 +33,7 @@ import android.preference.PreferenceManager;
 import android.util.Config;
 import android.util.Log;
 import android.telephony.SmsManager;
+import android.telephony.SmsMessage.MessageClass;
 
 import com.android.internal.telephony.TelephonyProperties;
 import com.android.internal.telephony.CommandsInterface;
@@ -91,8 +92,20 @@ final class CdmaSMSDispatcher extends SMSDispatcher {
         int teleService = sms.getTeleService();
         boolean handled = false;
 
-        if ((sms.getUserData() == null) && (SmsEnvelope.TELESERVICE_MWI != teleService) &&
-            (SmsEnvelope.TELESERVICE_VMN != teleService)) {
+        if ((SmsEnvelope.TELESERVICE_VMN == teleService) ||
+                (SmsEnvelope.TELESERVICE_MWI == teleService)) {
+            // handling Voicemail
+            int voicemailCount = sms.getNumOfVoicemails();
+            Log.d(TAG, "Voicemail count=" + voicemailCount);
+            // Store the voicemail count in preferences.
+            SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(
+                    ((CDMAPhone) mPhone).getContext());
+            SharedPreferences.Editor editor = sp.edit();
+            editor.putInt(CDMAPhone.VM_COUNT_CDMA, voicemailCount);
+            editor.commit();
+            ((CDMAPhone) mPhone).updateMessageWaitingIndicator(voicemailCount);
+            handled = true;
+        } else if ((sms.getUserData() == null)) {
             if (Config.LOGD) {
                 Log.d(TAG, "Received SMS without user data");
             }
@@ -103,22 +116,16 @@ final class CdmaSMSDispatcher extends SMSDispatcher {
             return Intents.RESULT_SMS_HANDLED;
         }
 
+        if (!mStorageAvailable && (sms.getMessageClass() != MessageClass.CLASS_0)) {
+            // It's a storable message and there's no storage available.  Bail.
+            // (See C.S0015-B v2.0 for a description of "Immediate Display"
+            // messages, which we represent as CLASS_0.)
+            return Intents.RESULT_SMS_OUT_OF_MEMORY;
+        }
+
         if (SmsEnvelope.TELESERVICE_WAP == teleService) {
             return processCdmaWapPdu(sms.getUserData(), sms.messageRef,
                     sms.getOriginatingAddress());
-        } else if ((SmsEnvelope.TELESERVICE_VMN == teleService) ||
-                   (SmsEnvelope.TELESERVICE_MWI == teleService)) {
-            // handling Voicemail
-            int voicemailCount = sms.getNumOfVoicemails();
-            Log.d(TAG, "Voicemail count=" + voicemailCount);
-            // Store the voicemail count in preferences.
-            SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(
-                    ((CDMAPhone) mPhone).getContext());
-            SharedPreferences.Editor editor = sp.edit();
-            editor.putInt(CDMAPhone.VM_COUNT_CDMA, voicemailCount);
-            editor.commit();
-            ((CDMAPhone) mPhone).updateMessageWaitingIndicator(voicemailCount);
-            return Intents.RESULT_SMS_HANDLED;
         }
 
         /**
diff --git a/telephony/java/com/android/internal/telephony/gsm/GsmSMSDispatcher.java b/telephony/java/com/android/internal/telephony/gsm/GsmSMSDispatcher.java
index b412fec..0ca3148 100644
--- a/telephony/java/com/android/internal/telephony/gsm/GsmSMSDispatcher.java
+++ b/telephony/java/com/android/internal/telephony/gsm/GsmSMSDispatcher.java
@@ -37,6 +37,7 @@ import com.android.internal.telephony.SmsMessageBase;
 import java.util.ArrayList;
 import java.util.HashMap;
 
+import static android.telephony.SmsMessage.MessageClass;
 
 final class GsmSMSDispatcher extends SMSDispatcher {
     private static final String TAG = "GSM";
@@ -111,6 +112,12 @@ final class GsmSMSDispatcher extends SMSDispatcher {
             return Intents.RESULT_SMS_HANDLED;
         }
 
+        if (!mStorageAvailable && (sms.getMessageClass() != MessageClass.CLASS_0)) {
+            // It's a storable message and there's no storage available.  Bail.
+            // (See TS 23.038 for a description of class 0 messages.)
+            return Intents.RESULT_SMS_OUT_OF_MEMORY;
+        }
+
         SmsHeader smsHeader = sms.getUserDataHeader();
          // See if message is partial or port addressed.
         if ((smsHeader == null) || (smsHeader.concatRef == null)) {