https://bugzilla.wikimedia.org/show_bug.cgi?id=18429

           Summary: Extra functions for AbuseFilter
           Product: MediaWiki extensions
           Version: any
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: AbuseFilter
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected]


Is there a way that functions such as "reversedns(user_ip) LIKE X" can ever be
included in AbuseFilter?

The reason Im thinking this is, there are a number of major IPs where this
might finally provide a means to prevent vandals that at present can't easily
be. For example, a number of ISPs have large IP ranges and dynamic Ips, so a
block is futile, the user just resets the router for a new IP. But whatever IP
is given will resolve to (say) "adsl-*.region17.isp.net" and hence a pattern
match on the reverse dns would allow edits by users in that specific area to be
picked up, whereas at present no block or other automated system can spot or
deal with these kinds of vandals.

Two caveats: 1/ is the cost of reverse DNS lookup prohibitive (and if so can it
be cached locally to reduce that); 2/ does this introduce a class of
AbuseFilter functions such as user_ip, that would mean the function is not
displayed or able to be edited except by checkusers?

I think this is useful enough to explore further.


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