DPC should not be allowed to grant development permission

Test: cts-tradefed run cts-dev --module CtsDevicePolicyManagerTestCases --t  com.android.cts.devicepolicy.MixedDeviceOwnerTest#testPermissionGrant_developmentPermission
Test: cts-tradefed run cts-dev --module CtsDevicePolicyManagerTestCases --t  com.android.cts.devicepolicy.MixedProfileOwnerTest#testPermissionGrant_developmentPermission
Test: cts-tradefed run cts-dev --module CtsDevicePolicyManagerTestCases --t  com.android.cts.devicepolicy.MixedDeviceOwnerTest#testPermissionGrant
Test: cts-tradefed run cts-dev --module CtsDevicePolicyManagerTestCases --t  com.android.cts.devicepolicy.MixedProfileOwnerTest#testPermissionGrant
Test: Run "Permissions lockdown" test in CtsVerifier

Merged-In: If83d8edd0eea99145421e967ae47fdc264a5cf7c
Merged-In: I129bfe850981cf0b3646b7c1cf19c8a3ec69f512

Bug: 62623498
Change-Id: Ief96a23fa49f1ea923574840f8ff590a5ea2456e

diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index 479f5e7..60a207f 100644 (file)
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -55,6 +55,7 @@ import android.content.pm.ApplicationInfo;
 import android.content.pm.IPackageManager;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.PermissionInfo;
 import android.content.pm.ResolveInfo;
 import android.content.pm.ServiceInfo;
 import android.content.pm.UserInfo;
@@ -95,6 +96,7 @@ import android.security.KeyChain;
 import android.security.KeyChain.KeyChainConnection;
 import android.service.persistentdata.PersistentDataBlockManager;
 import android.text.TextUtils;
+import android.util.EventLog;
 import android.util.Log;
 import android.util.PrintWriterPrinter;
 import android.util.Printer;
@@ -6444,6 +6446,10 @@ public class DevicePolicyManagerService extends IDevicePolicyManager.Stub {
                 if (targetSdkVersion < android.os.Build.VERSION_CODES.M) {
                     return false;
                 }
+                if (!isRuntimePermission(permission)) {
+                    EventLog.writeEvent(0x534e4554, "62623498", user.getIdentifier(), "");
+                    return false;
+                }
                 final PackageManager packageManager = mContext.getPackageManager();
                 switch (grantState) {
                     case DevicePolicyManager.PERMISSION_GRANT_STATE_GRANTED: {
@@ -6469,12 +6475,21 @@ public class DevicePolicyManagerService extends IDevicePolicyManager.Stub {
                 return true;
             } catch (SecurityException se) {
                 return false;
+            } catch (NameNotFoundException e) {
+                return false;
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }
     }
 
+    public boolean isRuntimePermission(String permissionName) throws NameNotFoundException {
+        final PackageManager packageManager = mContext.getPackageManager();
+        PermissionInfo permissionInfo = packageManager.getPermissionInfo(permissionName, 0);
+        return (permissionInfo.protectionLevel & PermissionInfo.PROTECTION_MASK_BASE)
+                == PermissionInfo.PROTECTION_DANGEROUS;
+    }
+
     @Override
     public int getPermissionGrantState(ComponentName admin, String packageName,
             String permission) throws RemoteException {