[DPM] DO can start network logging and listen for events
This CL adds:
1) Setter and getter in DPM to manipulate logging switch (retrieval
method to come in a subsequent CL(s)).
2) A way for DPM to register to listen for events.
3) Skeleton of NetworkLogger class (more to come in subsequent CL(s)).
Bug: 29748723
Change-Id: I5c04662ccc6febd2ba294b0eaca1ed1da9c16e47
diff --git a/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java b/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java
index be68173..641c62f 100644
--- a/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java
+++ b/services/core/java/com/android/server/connectivity/IpConnectivityMetrics.java
@@ -19,10 +19,13 @@
import android.content.Context;
import android.net.ConnectivityMetricsEvent;
import android.net.IIpConnectivityMetrics;
+import android.net.INetdEventCallback;
import android.net.metrics.ApfProgramEvent;
import android.net.metrics.IpConnectivityLog;
+import android.os.Binder;
import android.os.IBinder;
import android.os.Parcelable;
+import android.os.Process;
import android.provider.Settings;
import android.text.TextUtils;
import android.text.format.DateUtils;
@@ -263,6 +266,33 @@
private void enforcePermission(String what) {
getContext().enforceCallingOrSelfPermission(what, "IpConnectivityMetrics");
}
+
+ private void enforceNetdEventListeningPermission() {
+ final int uid = Binder.getCallingUid();
+ if (uid != Process.SYSTEM_UID) {
+ throw new SecurityException(String.format("Uid %d has no permission to listen for"
+ + " netd events.", uid));
+ }
+ }
+
+ @Override
+ public boolean registerNetdEventCallback(INetdEventCallback callback) {
+ enforceNetdEventListeningPermission();
+ if (mNetdListener == null) {
+ return false;
+ }
+ return mNetdListener.registerNetdEventCallback(callback);
+ }
+
+ @Override
+ public boolean unregisterNetdEventCallback() {
+ enforceNetdEventListeningPermission();
+ if (mNetdListener == null) {
+ // if the service is null, we aren't registered anyway
+ return true;
+ }
+ return mNetdListener.unregisterNetdEventCallback();
+ }
};
private static final ToIntFunction<Context> READ_BUFFER_SIZE = (ctx) -> {