Clear caller identity before calls to PlatformCompat

This is a pre-emptive fix for http://b/142942524 before the compat
change permissions are re-added.

Bug: 142942524
Test: atest DevicePolicyManagerTest
Test:
      1. Install TestDPC via adb
      2. Invoke "Set up Te..." from the launcher to create a work profile and follow "next" button and select "skip adding an account"
      3. Select TestDPC from the "work" tab of the list of all apps in launcher.
      4. Using built-in search look for "Password constraints" and tap it.
      5. tap "Minimum password length" and try to set it to 5.
      Before change: Neither user 1010193 nor current process has android.permission.INTERACT_ACROSS_USERS.
      After Change: password quality should be at least 131072 for setPasswordMinimumLength

Change-Id: I026b15f0c2562293402bb8de55b0c63a4bb22a85

1 files changed, 9 insertions, 6 deletions

diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index 65cabadaa3d8..75516cf88a4d 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -4680,12 +4680,15 @@ public class DevicePolicyManagerService extends BaseIDevicePolicyManager {
 
     private void ensureMinimumQuality(
             int userId, ActiveAdmin admin, int minimumQuality, String operation) {
-        if (admin.mPasswordPolicy.quality < minimumQuality
-                && passwordQualityInvocationOrderCheckEnabled(admin.info.getPackageName(),
-                userId)) {
-            throw new IllegalStateException(String.format(
-                    "password quality should be at least %d for %s", minimumQuality, operation));
-        }
+        mInjector.binderWithCleanCallingIdentity(() -> {
+            if (admin.mPasswordPolicy.quality < minimumQuality
+                    && passwordQualityInvocationOrderCheckEnabled(admin.info.getPackageName(),
+                    userId)) {
+                throw new IllegalStateException(String.format(
+                        "password quality should be at least %d for %s",
+                        minimumQuality, operation));
+            }
+        });
     }
 
     @Override