Observe screen on/off events in NetworkPolicy.
The POLICY_REJECT_BACKGROUND policy requires that network traffic be
blocked when a UID goes into the background. Even if the UID has an
activity in the foreground, it's considered "background" if the screen
is turned off.
This changes watches for SCREEN_ON/OFF broadcasts, and rule generation
now observes screen state. It also introduces an observer pattern so
that ActivityManager doesn't directly know about NetworkPolicy, and
moves the service management into SystemServer.
Change-Id: Ie7a84929d3ca60ae4578d47e19d5a8da10fd8d58
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index f2c97964..2a0d798 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -1467,6 +1467,22 @@
return true;
}
+ case REGISTER_PROCESS_OBSERVER_TRANSACTION: {
+ data.enforceInterface(IActivityManager.descriptor);
+ IProcessObserver observer = IProcessObserver.Stub.asInterface(
+ data.readStrongBinder());
+ registerProcessObserver(observer);
+ return true;
+ }
+
+ case UNREGISTER_PROCESS_OBSERVER_TRANSACTION: {
+ data.enforceInterface(IActivityManager.descriptor);
+ IProcessObserver observer = IProcessObserver.Stub.asInterface(
+ data.readStrongBinder());
+ unregisterProcessObserver(observer);
+ return true;
+ }
+
}
return super.onTransact(code, data, reply, flags);
@@ -3300,5 +3316,27 @@
return result;
}
+ public void registerProcessObserver(IProcessObserver observer) throws RemoteException {
+ Parcel data = Parcel.obtain();
+ Parcel reply = Parcel.obtain();
+ data.writeInterfaceToken(IActivityManager.descriptor);
+ data.writeStrongBinder(observer != null ? observer.asBinder() : null);
+ mRemote.transact(REGISTER_PROCESS_OBSERVER_TRANSACTION, data, reply, 0);
+ reply.readException();
+ data.recycle();
+ reply.recycle();
+ }
+
+ public void unregisterProcessObserver(IProcessObserver observer) throws RemoteException {
+ Parcel data = Parcel.obtain();
+ Parcel reply = Parcel.obtain();
+ data.writeInterfaceToken(IActivityManager.descriptor);
+ data.writeStrongBinder(observer != null ? observer.asBinder() : null);
+ mRemote.transact(UNREGISTER_PROCESS_OBSERVER_TRANSACTION, data, reply, 0);
+ reply.readException();
+ data.recycle();
+ reply.recycle();
+ }
+
private IBinder mRemote;
}