1 files changed, 33 insertions, 0 deletions
diff --git a/app/src/main/java/com/wireguard/android/backend/Tunnel.java b/app/src/main/java/com/wireguard/android/backend/Tunnel.java
new file mode 100644
index 00000000..86661355
--- /dev/null
+++ b/app/src/main/java/com/wireguard/android/backend/Tunnel.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright © 2020 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.android.backend;
+
+import java.util.regex.Pattern;
+
+/**
+ * Represents a WireGuard tunnel.
+ */
+
+public interface Tunnel {
+    enum State {
+        DOWN,
+        TOGGLE,
+        UP;
+
+        public static State of(final boolean running) {
+            return running ? UP : DOWN;
+        }
+    }
+
+    int NAME_MAX_LENGTH = 15;
+    Pattern NAME_PATTERN = Pattern.compile("[a-zA-Z0-9_=+.-]{1,15}");
+
+    static boolean isNameInvalid(final CharSequence name) {
+        return !NAME_PATTERN.matcher(name).matches();
+    }
+
+    String getName();
+}