Mikrotik Firewall IP Sync

 #Created by Dmitriy Mozgovoy on 24.05.2017.
   :local maxEntriesCount 1024;
   :local listName "UA-BLACKLIST"
   :local tempFile "ips.txt"
   :local apiPath ""; #https://uablacklist.net/ips.txt
   :local destMail ""; #[email protected]";

   :if ( $apiPath!="") do={
     /log info "fetching UA blacklist registry ($apiPath)...";
     /tool fetch url=$apiPath dst-path=$tempFile
   }
   :local counter 0;
   :local ipList [:toarray ""];
   :local added [:toarray ""];
   :local removed [:toarray ""];
   :local lineEnd 0;
   :local line "";
   :local lastEnd 0;
   :if ( [/file get [/file find name=$tempFile] size] > 0 ) do={
   :put "Analyzing...";
   /log info "Analyzing data in [$tempFile]..."
   :local rule [/ip firewall filter find dst-address-list=$listName]
   :if ([:len $rule]=0)  do={
     /log info "firewall rule not found. Adding...";
     /ip firewall filter add chain=forward dst-address-list="$listName" comment="rule for $listName" action=reject reject-with=icmp-host-unreachable place-before=0;
   }
   :local content [/file get [/file find name=$tempFile] contents] ;
   :local contentLen [ :len $content ] ;
   :do {
       :set $counter (counter+1);
       :set lineEnd [:find $content "\n" $lastEnd ] ;
       :if ($lineEnd < $lastEnd) do={
            :set $lineEnd $contentLen;
       }
       :set line [:pick $content $lastEnd $lineEnd] ;
       :set lastEnd ( $lineEnd + 1 ) ;
        :if (  [:len $line] > 0 )  do={
           :set $ipList ($ipList, $line);
           :if ( [:len [/ip firewall address-list find address=$line list=$listName]] =0 ) do={
                   /ip firewall address-list add list="$listName" address="$line";
                   :set $added ($added, $line);
                   /log warning "New address ($line) added to $listName";
           } else={
                   /log warning "Rule for address ($line) already exists in $listName";
           }
        }
    } while ($lineEnd < $contentLen && $counter < $maxEntriesCount )
   }
/ip firewall address-list
:foreach x in=[find list=$listName] do={
   :local addr [get $x address];
   :local found false;
   :foreach ip in=$ipList do={
       :if ( $ip=addr ) do={
         :set found true;
      }
   }
  :if ( !found ) do={
     :set $removed ($removed, $addr);
     /ip firewall address-list remove $x;
     /log warning "Remove IP ($addr) from $listName";
   }
}
:local newCount [:len $added];
:local removedCount [:len $removed];
:local body "";
:if ( $newCount>0 || $removedCount>0 ) do={
:local index 0;
:if ( $newCount > 0 ) do={
    :set $body ("Added new address to $listName (count: " . $newCount . ")\n [");
    :foreach ip in=$added do={
       :set $index ( $index+1 );
       :set $body ($body . " $ip ");
       :if ( $index < $newCount ) do={
           :set $body ($body. ",");
       }
   }
   :set $body ($body . "]");
}
:set $index 0;
:if ( $removedCount > 0 ) do={
    :set $body ($body . "\nRemoved address from $listName (count: " . $removedCount . ")\n [");
    :foreach ip in=$removed do={
       :set $index ( $index+1 );
       :set $body ($body . " $ip ");
       :if ( $index < $removedCount ) do={
           :set $body ($body. ",");
       }
   }
   :set $body ($body . "]");
}
  /log warning ("$listName has been updated. $body");
 :if ($destMail!="") do {
   /tool e-mail send to=$destMail subject=("[" .[/system identity get name] . "] The $listName has been synchronized with registry in $tempFile ($apiPath). Found some changes") body=$body;
   /log info "Email has been sent to $destMail";
  }
  :beep frequency=600 length=200ms;
} else={
  /log info ("$listName has been synchronized. No changes were found");
}
:put "Done.";