fw-addr-lists: add support for IPv6change-119

4 files changed, 68 insertions, 4 deletions

diff --git a/doc/fw-addr-lists.md b/doc/fw-addr-lists.md
index 5805905..6dc6b66 100644
--- a/doc/fw-addr-lists.md
+++ b/doc/fw-addr-lists.md
@@ -56,8 +56,12 @@ available in my repository and downloaded automatically. Import it manually
 (menu `/certificate/`) if missing.
 
 Create firewall rules to process the packets that are related to addresses
-from address-lists. This rejects the packets from and to ip addresses listed
-in address-list `block`.
+from address-lists.
+
+### IPv4 rules
+
+This rejects the packets from and to IPv4 addresses listed in
+address-list `block`.
 
     /ip/firewall/filter/add chain=input src-address-list=block action=reject reject-with=icmp-admin-prohibited;
     /ip/firewall/filter/add chain=forward src-address-list=block action=reject reject-with=icmp-admin-prohibited;
@@ -85,6 +89,33 @@ Alternatively handle the packets in firewall's raw section if you prefer:
 > ⚠️ **Warning**: Just again... The order of firewall rules is important. Make
 > sure they actually take effect as expected!
 
+### IPv6 rules
+
+These are the same rules, but for IPv6. 
+
+Reject packets in address-list `block`:
+
+    /ipv6/firewall/filter/add chain=input src-address-list=block action=reject reject-with=icmp-admin-prohibited;
+    /ipv6/firewall/filter/add chain=forward src-address-list=block action=reject reject-with=icmp-admin-prohibited;
+    /ipv6/firewall/filter/add chain=forward dst-address-list=block action=reject reject-with=icmp-admin-prohibited;
+    /ipv6/firewall/filter/add chain=output dst-address-list=block action=reject reject-with=icmp-admin-prohibited;
+
+Allow packets in address-list `allow`:
+
+    /ipv6/firewall/filter/add chain=input src-address-list=allow action=accept;
+    /ipv6/firewall/filter/add chain=forward src-address-list=allow action=accept;
+    /ipv6/firewall/filter/add chain=forward dst-address-list=allow action=accept;
+    /ipv6/firewall/filter/add chain=output dst-address-list=allow action=accept;
+
+Drop packets in firewall's raw section:
+
+    /ipv6/firewall/raw/add chain=prerouting src-address-list=block action=drop;
+    /ipv6/firewall/raw/add chain=prerouting dst-address-list=block action=drop;
+    /ipv6/firewall/raw/add chain=output dst-address-list=block action=drop;
+
+> ⚠️ **Warning**: Just again... The order of firewall rules is important. Make
+> sure they actually take effect as expected!
+
 ---
 [⬅️ Go back to main README](../README.md)  
 [⬆️ Go back to top](#top)
diff --git a/fw-addr-lists.rsc b/fw-addr-lists.rsc
index c0212c6..14da2e2 100644
--- a/fw-addr-lists.rsc
+++ b/fw-addr-lists.rsc
@@ -24,7 +24,7 @@
 :global WaitFullyConnected;
 
 :local FindDelim do={
-  :local ValidChars "0123456789./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-";
+  :local ValidChars "0123456789.:/ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-";
   :for I from=0 to=[ :len $1 ] do={
     :if ([ :typeof [ :find $ValidChars [ :pick ($1 . " ") $I ] ] ] != "num") do={
       :return $I;
@@ -42,6 +42,7 @@ $WaitFullyConnected;
   :local CntRenew 0;
   :local CntRemove 0;
   :local IPv4Addresses ({});
+  :local IPv6Addresses ({});
   :local Failure false;
 
   :foreach List in=$FwList do={
@@ -87,6 +88,10 @@ $WaitFullyConnected;
            $Address ~ "^[\\.a-zA-Z0-9-]+\\.[a-zA-Z]{2,}\$") do={
         :set ($IPv4Addresses->$Address) $TimeOut;
       }
+      :if ($Address ~ "^[0-9a-zA-Z]*:[0-9a-zA-Z:\\.]+(/[0-9]{1,3})?\$" || \
+           $Address ~ "^[\\.a-zA-Z0-9-]+\\.[a-zA-Z]{2,}\$") do={
+        :set ($IPv6Addresses->$Address) $TimeOut;
+      }
       :set Data [ :pick $Data ([ :len $Line ] + 1) [ :len $Data ] ];
     }
   }
@@ -107,6 +112,22 @@ $WaitFullyConnected;
     }
   }
 
+  :foreach Entry in=[ /ipv6/firewall/address-list/find where list=$FwListName comment=$ListComment ] do={
+    :local Address [ /ipv6/firewall/address-list/get $Entry address ];
+    :if ([ :typeof ($IPv6Addresses->$Address) ] = "time") do={
+      $LogPrintExit2 debug $0 ("Renewing IPv6 address for " . ($IPv6Addresses->$Address) . ": " . $Address) false;
+      /ipv6/firewall/address-list/set $Entry timeout=($IPv6Addresses->$Address);
+      :set ($IPv6Addresses->$Address);
+      :set CntRenew ($CntRenew + 1);
+    } else={
+      :if ($Failure = false) do={
+        $LogPrintExit2 debug $0 ("Removing: " . $Address) false;
+        /ipv6/firewall/address-list/remove $Entry;
+        :set CntRemove ($CntRemove + 1);
+      }
+    }
+  }
+
   :foreach Address,Timeout in=$IPv4Addresses do={
     $LogPrintExit2 debug $0 ("Adding IPv4 address for " . $Timeout . ": " . $Address) false;
     :do {
@@ -118,5 +139,16 @@ $WaitFullyConnected;
     }
   }
 
+  :foreach Address,Timeout in=$IPv6Addresses do={
+    $LogPrintExit2 debug $0 ("Adding IPv6 address for " . $Timeout . ": " . $Address) false;
+    :do {
+      /ipv6/firewall/address-list/add list=$FwListName comment=$ListComment address=$Address timeout=$Timeout;
+      :set ($IPv6Addresses->$Address);
+      :set CntAdd ($CntAdd + 1);
+    } on-error={
+      $LogPrintExit2 warning $0 ("Failed to add IPv6 address " . $Address . " to list '" . $FwListName . "'.") false;
+    }
+  }
+
   $LogPrintExit2 info $0 ("list: " . $FwListName . " -- added: " . $CntAdd . " - renewed: " . $CntRenew . " - removed: " . $CntRemove) false;
 }
diff --git a/global-functions.rsc b/global-functions.rsc
index d37b34b..92fabff 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -12,7 +12,7 @@
 :local 0 [ :jobname ];
 
 # expected configuration version
-:global ExpectedConfigVersion 118;
+:global ExpectedConfigVersion 119;
 
 # global variables not to be changed by user
 :global GlobalFunctionsReady false;
diff --git a/news-and-changes.rsc b/news-and-changes.rsc
index b6f5169..d0e9938 100644
--- a/news-and-changes.rsc
+++ b/news-and-changes.rsc
@@ -43,6 +43,7 @@
         [ $IfThenElse ($Resource->"total-hdd-space" < 16000000) ("Your " . $Resource->"board-name" . " is specifically affected! ") \
         [ $IfThenElse ($Resource->"free-hdd-space" > 4000000) ("(Your " . $Resource->"board-name" . " does not suffer this issue.) ") ] ] . \
         "Huge configuration and lots of scripts give an extra risk. Take care!");
+  119="Added support for IPv6 to script 'fw-addr-lists'.";
 };
 
 # Migration steps to be applied on script updates