Add checking NetworkStack permission methods and tests

These methods migrate from android.net.NetworkStack.

checkNetworkStackPermission()
checkNetworkStackPermissionOr()

Bug: 178352309
Test: atest NetworkStaticLibTests
Change-Id: Iba4daaac3c662b87fec038f7c557e4fd6544c069

1 files changed, 31 insertions, 0 deletions

diff --git a/common/framework/com/android/net/module/util/PermissionUtils.java b/common/framework/com/android/net/module/util/PermissionUtils.java
index ce8a7454..10eda576 100644
--- a/common/framework/com/android/net/module/util/PermissionUtils.java
+++ b/common/framework/com/android/net/module/util/PermissionUtils.java
@@ -16,11 +16,16 @@
 
 package com.android.net.module.util;
 
+import static android.Manifest.permission.NETWORK_STACK;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+import static android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK;
 
 import android.annotation.NonNull;
 import android.content.Context;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+
 /**
  * Collection of permission utilities.
  * @hide
@@ -49,4 +54,30 @@ public final class PermissionUtils {
                     + String.join(", ", permissions) + ".");
         }
     }
+
+    /**
+     * If the NetworkStack, MAINLINE_NETWORK_STACK are not allowed for a particular process, throw a
+     * {@link SecurityException}.
+     *
+     * @param context {@link android.content.Context} for the process.
+     */
+    public static void enforceNetworkStackPermission(final @NonNull Context context) {
+        enforceNetworkStackPermissionOr(context);
+    }
+
+    /**
+     * If the NetworkStack, MAINLINE_NETWORK_STACK or other specified permissions are not allowed
+     * for a particular process, throw a {@link SecurityException}.
+     *
+     * @param context {@link android.content.Context} for the process.
+     * @param otherPermissions The set of permissions that could be the candidate permissions , or
+     *                         empty string if none of other permissions needed.
+     */
+    public static void enforceNetworkStackPermissionOr(final @NonNull Context context,
+            final @NonNull String... otherPermissions) {
+        ArrayList<String> permissions = new ArrayList<String>(Arrays.asList(otherPermissions));
+        permissions.add(NETWORK_STACK);
+        permissions.add(PERMISSION_MAINLINE_NETWORK_STACK);
+        enforceAnyPermissionOf(context, permissions.toArray(new String[0]));
+    }
 }