Tunnel: support getting runtime configuration

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2019-01-24 00:00:46 +01:00
parent ab3cbee6a2
commit 22625e8cc4
9 changed files with 278 additions and 0 deletions
@@ -97,6 +97,24 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
        completionHandler()
    }

+    override func handleAppMessage(_ messageData: Data, completionHandler: ((Data?) -> Void)? = nil) {
+        guard let completionHandler = completionHandler else { return }
+        guard let handle = handle else {
+            completionHandler(nil)
+            return
+        }
+        if messageData.count == 1 && messageData[0] == 0 {
+            guard let settings = wgGetConfig(handle) else {
+                completionHandler(nil)
+                return
+            }
+            completionHandler(String(cString: settings).data(using: .utf8)!)
+            free(settings)
+        } else {
+            completionHandler(nil)
+        }
+    }
+
    private func configureLogger() {
        Logger.configureGlobal(withFilePath: FileManager.networkExtensionLogFileURL?.path)
        wgSetLogger { level, msgC in