commit 0042853ccff5af023afb0c9e808f014d7f178305
author Junyu Lai <junyulai@google.com> Thu Dec 30 07:03:24 2021 +0000
committer Junyu Lai <junyulai@google.com> Mon Jan 03 01:54:38 2022 +0000
tree aadfaaa65055e68b6d435be708a2912aab0d192a
parent c5f0e2c80ab17a5dd834d0f9d3bbaa32e60c3e24

[MS28.2] Add checkDumpPermission

Test: atest FrameworksNetTests NetworkStaticLibTests
Bug: 204830222
Change-Id: I105c45d89628b47a989e2113c26e1ea3351c559a

staticlibs/framework/com/android/net/module/util/PermissionUtils.java

diff --git a/staticlibs/framework/com/android/net/module/util/PermissionUtils.java b/staticlibs/framework/com/android/net/module/util/PermissionUtils.java
index 10eda57..3ab2070 100644
--- a/staticlibs/framework/com/android/net/module/util/PermissionUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/PermissionUtils.java
@@ -22,7 +22,9 @@
 
 import android.annotation.NonNull;
 import android.content.Context;
+import android.os.Binder;
 
+import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
 
@@ -80,4 +82,19 @@
         permissions.add(PERMISSION_MAINLINE_NETWORK_STACK);
         enforceAnyPermissionOf(context, permissions.toArray(new String[0]));
     }
+
+    /**
+     * Return true if the context has DUMP permission.
+     */
+    public static boolean checkDumpPermission(Context context, String tag, PrintWriter pw) {
+        if (context.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
+                != PERMISSION_GRANTED) {
+            pw.println("Permission Denial: can't dump " + tag + " from from pid="
+                    + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()
+                    + " due to missing android.permission.DUMP permission");
+            return false;
+        } else {
+            return true;
+        }
+    }
 }