Re: [Wikitech-l] trackback.php suggestion

Hi All, Recently I had a thought about trackback.php to attempt to discard spam so I've made this minor alteration. Could be it reviewed and perhaps included? Thanks

Index: trackback.php =================================================================== @@ -43,17 +43,33 @@ $tburl = strval( $_POST['url'] ); $tbname = strval( @$_POST['blog_name'] ); $tbarticle = strval( $_REQUEST['article'] ); +$tbip = strval( $_SERVER['REMOTE_ADDR'] ); $title = Title::newFromText($tbarticle); if( !$title || !$title->exists() ) XMLerror( "Specified article does not exist." ); + +if( $wgUseTrackbacksRBL==true && substr_count( $tbip, ":" ) == 0 && substr_count( $tbip, "." ) > 0 ) { + + $rbl_list = array( "zen.spamhaus.org", "dnsbl.njabl.org", "dnsbl.sorbs.net", "bl.spamcop.net" ); + + foreach( $rbl_list as $rbl_site ) { + $ip_arr = array_reverse( explode( '.', $tbip ) ); + $lookup = implode( '.', $ip_arr ) . '.' . $rbl_site; + if( $lookup != gethostbyname( $lookup ) ) { + XMLerror( $tbip . " is listed in " . $rbl_site ); + } + } +} +