1 files changed, 55 insertions, 0 deletions
diff --git a/update-tunnelbroker.rsc b/update-tunnelbroker.rsc
new file mode 100644
index 0000000..84d7430
--- /dev/null
+++ b/update-tunnelbroker.rsc
@@ -0,0 +1,55 @@
+#!rsc by RouterOS
+# RouterOS script: update-tunnelbroker
+# Copyright (c) 2013-2023 Christian Hesse <mail@eworm.de>
+#                         Michael Gisbers <michael@gisbers.de>
+# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
+#
+# provides: ppp-on-up
+#
+# update local address of tunnelbroker interface
+# https://git.eworm.de/cgit/routeros-scripts/about/doc/update-tunnelbroker.md
+
+:local 0 "update-tunnelbroker";
+:global GlobalFunctionsReady;
+:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
+
+:global CertificateAvailable;
+:global LogPrintExit2;
+:global ParseKeyValueStore;
+
+:if ([ $CertificateAvailable "Starfield Secure Certificate Authority - G2" ] = false) do={
+  $LogPrintExit2 error $0 ("Downloading required certificate failed.") true;
+}
+
+:foreach Interface in=[ /interface/6to4/find where comment~"^tunnelbroker" !disabled ] do={
+  :local I 0;
+  :local Response "";
+  :local InterfaceVal [ /interface/6to4/get $Interface ];
+  :local Comment [ $ParseKeyValueStore ($InterfaceVal->"comment") ];
+
+  :while ($I < 3 && $Response = "") do={
+    :do {
+      :set Response ([ /tool/fetch check-certificate=yes-without-crl \
+          ("https://ipv4.tunnelbroker.net/nic/update\?hostname=" . $Comment->"id") \
+          user=($Comment->"user") password=($Comment->"pass") output=user as-value ]->"data");
+    } on-error={
+      :delay 10s;
+      :set I ($I + 1);
+    }
+  }
+
+  :if (!($Response~"^(good|nochg) ")) do={
+    $LogPrintExit2 error $0 ("Failed sending the local address to tunnelbroker or unexpected response!") true;
+  }
+
+  :local PublicAddress [ :pick $Response ([ :find $Response " " ] + 1) [ :find $Response "\n" ] ];
+
+  :if ($PublicAddress != $InterfaceVal->"local-address") do={
+    :if ([ :len [ /ip/address find where address~("^" . $PublicAddress . "/") ] ] < 1) do={
+      $LogPrintExit2 warning $0 ("The address " . $PublicAddress . " is not configured on your device. NAT by ISP?") false;
+    }
+
+    $LogPrintExit2 info $0 ("Local address changed, updating tunnel configuration with address: " . $PublicAddress) false;
+    /interface/6to4/set $Interface local-address=$PublicAddress;
+  }
+}