Consistent dump() permission checking.
This change introduces new methods on DumpUtils that can check if the
caller has DUMP and/or PACKAGE_USAGE_STATS access. It then moves all
existing dump() methods to use these checks so that we emit
consistent error messages.
Test: cts-tradefed run commandAndExit cts-dev -m CtsSecurityTestCases -t android.security.cts.ServicePermissionsTest
Bug: 32806790
Change-Id: Iaff6b9506818ee082b1e169c89ebe1001b3bfeca
diff --git a/services/core/java/com/android/server/media/MediaSessionService.java b/services/core/java/com/android/server/media/MediaSessionService.java
index 4bf9d8f..64ab848 100644
--- a/services/core/java/com/android/server/media/MediaSessionService.java
+++ b/services/core/java/com/android/server/media/MediaSessionService.java
@@ -71,6 +71,7 @@
import android.view.KeyEvent;
import android.view.ViewConfiguration;
+import com.android.internal.util.DumpUtils;
import com.android.server.LocalServices;
import com.android.server.SystemService;
import com.android.server.Watchdog;
@@ -1283,13 +1284,7 @@
@Override
public void dump(FileDescriptor fd, final PrintWriter pw, String[] args) {
- if (getContext().checkCallingOrSelfPermission(Manifest.permission.DUMP)
- != PackageManager.PERMISSION_GRANTED) {
- pw.println("Permission Denial: can't dump MediaSessionService from from pid="
- + Binder.getCallingPid()
- + ", uid=" + Binder.getCallingUid());
- return;
- }
+ if (!DumpUtils.checkDumpPermission(getContext(), TAG, pw)) return;
pw.println("MEDIA SESSION SERVICE (dumpsys media_session)");
pw.println();