From e19e33d0a80fe1b4520fe9dab05f6f8a96d6c574 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Wed, 31 May 2023 10:01:38 +0200
Subject: introduce fw-addr-lists

---
 fw-addr-lists.rsc | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 fw-addr-lists.rsc

(limited to 'fw-addr-lists.rsc')

diff --git a/fw-addr-lists.rsc b/fw-addr-lists.rsc
new file mode 100644
index 0000000..5117c3e
--- /dev/null
+++ b/fw-addr-lists.rsc
@@ -0,0 +1,99 @@
+#!rsc by RouterOS
+# RouterOS script: fw-addr-lists
+# Copyright (c) 2023 Christian Hesse <mail@eworm.de>
+# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
+#
+# download, import and update firewall address-lists
+# https://git.eworm.de/cgit/routeros-scripts/about/doc/fw-addr-lists.md
+
+:local 0 "fw-addr-lists";
+:global GlobalFunctionsReady;
+:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
+
+:global FwAddrLists;
+:global FwAddrListTimeOut;
+
+:global CertificateAvailable;
+:global LogPrintExit2;
+:global ScriptLock;
+:global WaitFullyConnected;
+
+:local FindDelim do={
+  :local ValidChars "0123456789./";
+  :for I from=0 to=[ :len $1 ] do={
+    :if ([ :typeof [ :find $ValidChars [ :pick ($1 . " ") $I ] ] ] != "num") do={
+      :return $I;
+    }
+  }
+}
+
+$ScriptLock $0;
+
+$WaitFullyConnected;
+
+:local ListComment ("managed by " . $0);
+
+:foreach FwListName,FwList in=$FwAddrLists do={
+  :local Addresses ({});
+  :local CntAdd 0;
+  :local CntRenew 0;
+  :local CntRemove 0;
+  :local Failure false;
+
+  :foreach List in=$FwList do={
+    :local Data;
+    :local CheckCertificate "no";
+
+    :if ([ :len ($List->"cert") ] > 0) do={
+      :set CheckCertificate "yes-without-crl";
+      :if ([ $CertificateAvailable ($List->"cert") ] = false) do={
+        $LogPrintExit2 warning $0 ("Downloading required certificate failed, trying anyway.") false;
+      }
+    }
+
+    :do {
+      :set Data ([ /tool/fetch ($List->"url") check-certificate=$CheckCertificate output=user as-value ]->"data");
+    } on-error={
+      :set Failure true;
+      $LogPrintExit2 warning $0 ("Failed downloading list from: " . $List->"url") false;
+    }
+
+    :while ([ :len $Data ] != 0) do={
+      :local Line [ :pick $Data 0 [ :find $Data "\n" ] ];
+      :local Address ([ :pick $Line 0 [ $FindDelim $Line ] ] . ($List->"cidr"));
+      :if ($Address ~ "^[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}(/[0-9]{1,2})?\$") do={
+        :set ($Addresses->$Address) 1;
+      }
+      :set Data [ :pick $Data ([ :len $Line ] + 1) [ :len $Data ] ];
+    }
+  }
+
+  :foreach Entry in=[ /ip/firewall/address-list/find where list=$FwListName comment=$ListComment ] do={
+    :local Address [ /ip/firewall/address-list/get $Entry address ];
+    :if (($Addresses->$Address) = 1) do={
+      $LogPrintExit2 debug $0 ("Renewing: " . $Address) false;
+      /ip/firewall/address-list/set $Entry timeout=$FwAddrListTimeOut;
+      :set ($Addresses->$Address);
+      :set CntRenew ($CntRenew + 1);
+    } else={
+      :if ($Failure = false) do={
+        $LogPrintExit2 debug $0 ("Removing: " . $Address) false;
+        /ip/firewall/address-list/remove $Entry;
+        :set CntRemove ($CntRemove + 1);
+      }
+    }
+  }
+
+  :foreach Address,Ignore in=$Addresses do={
+    $LogPrintExit2 debug $0 ("Adding: " . $Address) false;
+    :do {
+      /ip/firewall/address-list/add list=$FwListName comment=$ListComment address=$Address timeout=$FwAddrListTimeOut;
+      :set ($Addresses->$Address);
+      :set CntAdd ($CntAdd + 1);
+    } on-error={
+      $LogPrintExit2 warning $0 ("Failed to add address " . $Address . " to list '" . $FwListName . "'.") false;
+    }
+  }
+
+  $LogPrintExit2 info $0 ("List: " . $FwListName . " -- Added: " . $CntAdd . " - renewed: " . $CntRenew . " - removed: " . $CntRemove) false;
+}
-- 
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