Add SMS Middleware layer.

Change-Id: I4fff0c584f8fce9c5f2f4fe86a82fe6480c307c7

8 files changed, 231 insertions, 4 deletions

diff --git a/Android.mk b/Android.mk
index 9e07849..fa7bbeb 100644
--- a/Android.mk
+++ b/Android.mk
@@ -19,6 +19,7 @@ include $(CLEAR_VARS)
 LOCAL_AIDL_INCLUDES := $(LOCAL_PATH)/src/java
 LOCAL_SRC_FILES := \
 	src/java/com/android/internal/telephony/ISms.aidl \
+	src/java/com/android/internal/telephony/ISmsMiddleware.aidl \
     src/java/com/android/internal/telephony/IIccPhoneBook.aidl \
     src/java/com/android/internal/telephony/EventLogTags.logtags \
 
diff --git a/src/java/android/telephony/SmsMessage.java b/src/java/android/telephony/SmsMessage.java
index b94609e..eaaf4b0 100644
--- a/src/java/android/telephony/SmsMessage.java
+++ b/src/java/android/telephony/SmsMessage.java
@@ -90,6 +90,12 @@ public class SmsMessage {
      */
     public static final String FORMAT_3GPP2 = "3gpp2";
 
+    /**
+     * Indicates a synthetic SMS message.
+     * @hide
+     */
+    public static final String FORMAT_SYNTHETIC = "synthetic";
+
     /** Contains actual SmsMessage. Only public for debugging and for framework layer.
      *
      * @hide
@@ -137,6 +143,9 @@ public class SmsMessage {
         int activePhone = TelephonyManager.getDefault().getCurrentPhoneType();
         String format = (PHONE_TYPE_CDMA == activePhone) ?
                 SmsConstants.FORMAT_3GPP2 : SmsConstants.FORMAT_3GPP;
+        if (com.android.internal.telephony.SyntheticSmsMessage.isSyntheticPdu(pdu)) {
+            format = FORMAT_SYNTHETIC;
+        }
         return createFromPdu(pdu, format);
     }
 
@@ -157,6 +166,8 @@ public class SmsMessage {
             wrappedMessage = com.android.internal.telephony.cdma.SmsMessage.createFromPdu(pdu);
         } else if (SmsConstants.FORMAT_3GPP.equals(format)) {
             wrappedMessage = com.android.internal.telephony.gsm.SmsMessage.createFromPdu(pdu);
+        } else if (FORMAT_SYNTHETIC.equals(format)) {
+            wrappedMessage = com.android.internal.telephony.SyntheticSmsMessage.createFromPdu(pdu);
         } else {
             Log.e(LOG_TAG, "createFromPdu(): unsupported message format " + format);
             return null;
diff --git a/src/java/com/android/internal/telephony/ISms.aidl b/src/java/com/android/internal/telephony/ISms.aidl
index 1fd9f70..0f50ff0 100644
--- a/src/java/com/android/internal/telephony/ISms.aidl
+++ b/src/java/com/android/internal/telephony/ISms.aidl
@@ -18,6 +18,9 @@ package com.android.internal.telephony;
 
 import android.app.PendingIntent;
 import com.android.internal.telephony.SmsRawData;
+import com.android.internal.telephony.ISmsMiddleware;
+
+import java.util.List;
 
 /** Interface for applications to access the ICC phone book.
  *
@@ -34,6 +37,9 @@ import com.android.internal.telephony.SmsRawData;
  */
 
 interface ISms {
+    void registerSmsMiddleware(String name, ISmsMiddleware middleware);
+    void synthesizeMessages(String originatingAddress, String scAddress, in List<String> messages, long timestampMillis);
+
     /**
      * Retrieves all messages currently stored on ICC.
      *
diff --git a/src/java/com/android/internal/telephony/ISmsMiddleware.aidl b/src/java/com/android/internal/telephony/ISmsMiddleware.aidl
new file mode 100644
index 0000000..1268f2e
--- /dev/null
+++ b/src/java/com/android/internal/telephony/ISmsMiddleware.aidl
@@ -0,0 +1,12 @@
+package com.android.internal.telephony;
+
+import android.app.PendingIntent;
+
+interface ISmsMiddleware {
+    boolean onSendText(in String destAddr, in String scAddr, in String text,
+            in PendingIntent sentIntent, in PendingIntent deliveryIntent);
+
+    boolean onSendMultipartText(in String destinationAddress, in String scAddress,
+            in List<String> parts, in List<PendingIntent> sentIntents,
+            in List<PendingIntent> deliveryIntents);
+}
\ No newline at end of file
diff --git a/src/java/com/android/internal/telephony/IccSmsInterfaceManager.java b/src/java/com/android/internal/telephony/IccSmsInterfaceManager.java
index 525bcd9..b4d13fd 100644
--- a/src/java/com/android/internal/telephony/IccSmsInterfaceManager.java
+++ b/src/java/com/android/internal/telephony/IccSmsInterfaceManager.java
@@ -18,6 +18,7 @@ package com.android.internal.telephony;
 
 import android.app.PendingIntent;
 import android.content.Context;
+import android.os.RemoteException;
 import android.util.Log;
 
 import com.android.internal.util.HexDump;
@@ -48,6 +49,14 @@ public abstract class IccSmsInterfaceManager extends ISms.Stub {
                 "android.permission.SEND_SMS", message);
     }
 
+    @Override
+    public void registerSmsMiddleware(String name, ISmsMiddleware middleware) throws android.os.RemoteException {
+    }
+
+    @Override
+    public void synthesizeMessages(String originatingAddress, String scAddress, List<String> messages, long timestampMillis) throws RemoteException {
+    }
+
     /**
      * Send a data based SMS to a specific application port.
      *
diff --git a/src/java/com/android/internal/telephony/IccSmsInterfaceManagerProxy.java b/src/java/com/android/internal/telephony/IccSmsInterfaceManagerProxy.java
index f80aa67..44882ef 100644
--- a/src/java/com/android/internal/telephony/IccSmsInterfaceManagerProxy.java
+++ b/src/java/com/android/internal/telephony/IccSmsInterfaceManagerProxy.java
@@ -16,26 +16,86 @@
 
 package com.android.internal.telephony;
 
+import java.util.Hashtable;
+import java.util.List;
+
+import android.app.Activity;
 import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.os.PowerManager;
+import android.os.RemoteException;
 import android.os.ServiceManager;
-
-import java.util.List;
+import android.os.SystemProperties;
+import android.provider.Telephony.Sms.Intents;
+import android.telephony.SmsMessage;
 
 public class IccSmsInterfaceManagerProxy extends ISms.Stub {
     private IccSmsInterfaceManager mIccSmsInterfaceManager;
+    private Hashtable<String, ISmsMiddleware> mMiddleware = new Hashtable<String, ISmsMiddleware>();
 
-    public IccSmsInterfaceManagerProxy(IccSmsInterfaceManager
-            iccSmsInterfaceManager) {
+    public IccSmsInterfaceManagerProxy(Context context,
+            IccSmsInterfaceManager iccSmsInterfaceManager) {
+        this.mContext = context;
         this.mIccSmsInterfaceManager = iccSmsInterfaceManager;
         if(ServiceManager.getService("isms") == null) {
             ServiceManager.addService("isms", this);
         }
+
+        createWakelock();
     }
 
     public void setmIccSmsInterfaceManager(IccSmsInterfaceManager iccSmsInterfaceManager) {
         this.mIccSmsInterfaceManager = iccSmsInterfaceManager;
     }
 
+    private void createWakelock() {
+        PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE);
+        mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "SMSDispatcher");
+        mWakeLock.setReferenceCounted(true);
+    }
+
+    @Override
+    public void registerSmsMiddleware(String name, ISmsMiddleware middleware) throws android.os.RemoteException {
+        if (!"1".equals(SystemProperties.get("persist.sys.sms_debug", "0"))) {
+            mContext.enforceCallingPermission(
+                    "android.permission.INTERCEPT_SMS", "");
+        }
+        mMiddleware.put(name, middleware);
+    }
+
+    private Context mContext;
+    private PowerManager.WakeLock mWakeLock;
+    private static final int WAKE_LOCK_TIMEOUT = 5000;
+    private void dispatchPdus(byte[][] pdus) {
+        Intent intent = new Intent(Intents.SMS_RECEIVED_ACTION);
+        intent.putExtra("pdus", pdus);
+        intent.putExtra("format", SmsMessage.FORMAT_SYNTHETIC);
+        dispatch(intent, SMSDispatcher.RECEIVE_SMS_PERMISSION);
+    }
+
+    private void dispatch(Intent intent, String permission) {
+        // Hold a wake lock for WAKE_LOCK_TIMEOUT seconds, enough to give any
+        // receivers time to take their own wake locks.
+        mWakeLock.acquire(WAKE_LOCK_TIMEOUT);
+        mContext.sendOrderedBroadcast(intent, permission);
+    }
+
+    @Override
+    public void synthesizeMessages(String originatingAddress, String scAddress, List<String> messages, long timestampMillis) throws RemoteException {
+        // if not running in debug mode
+        if (!"1".equals(SystemProperties.get("persist.sys.sms_debug", "0"))) {
+            mContext.enforceCallingPermission(
+                    "android.permission.BROADCAST_SMS", "");
+        }
+        byte[][] pdus = new byte[messages.size()][];
+        for (int i = 0; i < messages.size(); i++) {
+            SyntheticSmsMessage message = new SyntheticSmsMessage(originatingAddress, scAddress, messages.get(i), timestampMillis);
+            pdus[i] = message.getPdu();
+        }
+        dispatchPdus(pdus);
+    }
+
     public boolean
     updateMessageOnIccEf(int index, int status, byte[] pdu) throws android.os.RemoteException {
          return mIccSmsInterfaceManager.updateMessageOnIccEf(index, status, pdu);
@@ -58,12 +118,30 @@ public class IccSmsInterfaceManagerProxy extends ISms.Stub {
 
     public void sendText(String destAddr, String scAddr,
             String text, PendingIntent sentIntent, PendingIntent deliveryIntent) {
+        for (ISmsMiddleware middleware: mMiddleware.values()) {
+            try {
+                if (middleware.onSendText(destAddr, scAddr, text, sentIntent, deliveryIntent))
+                    return;
+            }
+            catch (Exception e) {
+                // TOOD: remove the busted middleware?
+            }
+        }
         mIccSmsInterfaceManager.sendText(destAddr, scAddr, text, sentIntent, deliveryIntent);
     }
 
     public void sendMultipartText(String destAddr, String scAddr,
             List<String> parts, List<PendingIntent> sentIntents,
             List<PendingIntent> deliveryIntents) throws android.os.RemoteException {
+        for (ISmsMiddleware middleware: mMiddleware.values()) {
+            try {
+                if (middleware.onSendMultipartText(destAddr, scAddr, parts, sentIntents, deliveryIntents))
+                    return;
+            }
+            catch (Exception e) {
+                // TOOD: remove the busted middleware?
+            }
+        }
         mIccSmsInterfaceManager.sendMultipartText(destAddr, scAddr,
                 parts, sentIntents, deliveryIntents);
     }
diff --git a/src/java/com/android/internal/telephony/PhoneProxy.java b/src/java/com/android/internal/telephony/PhoneProxy.java
index 7cef426..38fe68d 100644
--- a/src/java/com/android/internal/telephony/PhoneProxy.java
+++ b/src/java/com/android/internal/telephony/PhoneProxy.java
@@ -71,6 +71,7 @@ public class PhoneProxy extends Handler implements Phone {
         mResetModemOnRadioTechnologyChange = SystemProperties.getBoolean(
                 TelephonyProperties.PROPERTY_RESET_ON_RADIO_TECH_CHANGE, false);
         mIccSmsInterfaceManagerProxy = new IccSmsInterfaceManagerProxy(
+                phone.getContext(),
                 phone.getIccSmsInterfaceManager());
         mIccPhoneBookInterfaceManagerProxy = new IccPhoneBookInterfaceManagerProxy(
                 phone.getIccPhoneBookInterfaceManager());
diff --git a/src/java/com/android/internal/telephony/SyntheticSmsMessage.java b/src/java/com/android/internal/telephony/SyntheticSmsMessage.java
new file mode 100644
index 0000000..14bfca8
--- /dev/null
+++ b/src/java/com/android/internal/telephony/SyntheticSmsMessage.java
@@ -0,0 +1,109 @@
+package com.android.internal.telephony;
+
+import org.json.JSONObject;
+
+import com.android.internal.telephony.SmsConstants.MessageClass;
+
+public class SyntheticSmsMessage extends SmsMessageBase {
+    public static class SyntheticAddress extends SmsAddress {
+    }
+
+    public static boolean isSyntheticPdu(byte[] pdu) {
+        try {
+            JSONObject json = new JSONObject(new String(pdu));
+            return json.optBoolean("synthetic", false);
+        }
+        catch (Exception e) {
+        }
+        return false;
+    }
+
+    public static SyntheticSmsMessage createFromPdu(byte[] pdu) {
+        try {
+            // TODO: use Parcelable or Bundle or something that serializes?
+            JSONObject json = new JSONObject(new String(pdu));
+            SyntheticSmsMessage message = new SyntheticSmsMessage(
+                    json.getString("originatingAddress"),
+                    json.optString("scAddress", null),
+                    json.getString("messageBody"),
+                    json.getLong("timestampMillis"));
+            return message;
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public SyntheticSmsMessage(String originatingAddress, String scAddress, String messageBody, long timestampMillis) {
+        this.originatingAddress = new SyntheticAddress();
+        this.originatingAddress.address = originatingAddress;
+
+        this.messageBody = messageBody;
+        this.scTimeMillis = timestampMillis;
+        this.scAddress = scAddress;
+
+        try {
+            JSONObject json = new JSONObject();
+            json.put("originatingAddress", originatingAddress);
+            json.put("scAddress", scAddress);
+            json.put("messageBody", messageBody);
+            json.put("timestampMillis", timestampMillis);
+            json.put("synthetic", true);
+            this.mPdu = json.toString().getBytes();
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public MessageClass getMessageClass() {
+        return SmsConstants.MessageClass.UNKNOWN;
+    }
+
+    @Override
+    public int getProtocolIdentifier() {
+        return 0;
+    }
+
+    @Override
+    public boolean isReplace() {
+        return false;
+    }
+
+    @Override
+    public boolean isCphsMwiMessage() {
+        return false;
+    }
+
+    @Override
+    public boolean isMWIClearMessage() {
+        return false;
+    }
+
+    @Override
+    public boolean isMWISetMessage() {
+        return false;
+    }
+
+    @Override
+    public boolean isMwiDontStore() {
+        return false;
+    }
+
+    @Override
+    public int getStatus() {
+        return 0;
+    }
+
+    @Override
+    public boolean isStatusReportMessage() {
+        return false;
+    }
+
+    @Override
+    public boolean isReplyPathPresent() {
+        return false;
+    }
+}