Add permission helpers for native Binder

These will be used in upcoming patches, implementing native Binder
methods.

Bug: 68359837
Test: compilation
Change-Id: I66e611a3cf1b0411c03f4eb9416272b8e18ae270
diff --git a/jni/permission_helpers.h b/jni/permission_helpers.h
new file mode 100644
index 0000000..3119646
--- /dev/null
+++ b/jni/permission_helpers.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <binder/Status.h>
+
+namespace android {
+namespace bluetooth {
+
+const char PERMISSION_BLUETOOTH[] = "android.permission.BLUETOOTH_ADMIN";
+const char PERMISSION_BLUETOOTH_ADMIN[] = "android.permission.BLUETOOTH_ADMIN";
+const char PERMISSION_BLUETOOTH_PRIVILEGED[] =
+    "android.permission.BLUETOOTH_PRIVILEGED";
+
+extern uid_t foregroundUserId;
+extern uid_t systemUiUid;
+
+android::binder::Status checkPermission(const char* permission);
+bool isCallerActiveUser();
+bool isCallerActiveUserOrManagedProfile();
+
+}  // namespace bluetooth
+}  // namespace android
+
+#define ENFORCE_PERMISSION(permission)                     \
+  {                                                        \
+    android::binder::Status status =                       \
+        android::bluetooth::checkPermission((permission)); \
+    if (!status.isOk()) {                                  \
+      return status;                                       \
+    }                                                      \
+  }
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