Codice PHP:
<?
    }

    // Domain name error handling:

    if(TYPE!="name" and strlen(DDOMAIN) < 3)
    {
        disperror(ERROR_TOO_SHORT);
        if (REPEAT_SEARCH_WINDOW) include_once(FILE_NAME);
        if (WAIT_LAYER_ENABLED) echo '<script language="javascript">hidelayer("waitlayer");</script>';
        if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
        exit;
    }
    if(TYPE!="name" and strlen(DDOMAIN) > 63)
    {
        disperror(ERROR_TOO_LONG);
        if (REPEAT_SEARCH_WINDOW) include_once(FILE_NAME);
        if (WAIT_LAYER_ENABLED) echo '<script language="javascript">hidelayer("waitlayer");</script>';
        if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
        exit;
    }
    if(TYPE!="name" and ereg("^-|-$",DDOMAIN))
    {
        disperror(ERROR_HYPHEN);
        if (REPEAT_SEARCH_WINDOW) include_once(FILE_NAME);
        if (WAIT_LAYER_ENABLED) echo '<script language="javascript">hidelayer("waitlayer");</script>';
        if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
        exit;
    }
    if(TYPE!="name" and !ereg("([a-z]|[A-Z]|[0-9]|-){".strlen(DDOMAIN)."}",DDOMAIN))
    {
        disperror(ERROR_CHARACTERS);
        if (REPEAT_SEARCH_WINDOW) include_once(FILE_NAME);
        if (WAIT_LAYER_ENABLED) echo '<script language="javascript">hidelayer("waitlayer");</script>';
        if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
        exit;
    }
    if(TYPE=="name")
    {
        if (!eregi("\.",DDOMAIN))
        {
            disperror(ERROR_NAME_DOT);
            if (REPEAT_SEARCH_WINDOW) include_once(FILE_NAME);
            if (WAIT_LAYER_ENABLED) echo '<script language="javascript">hidelayer("waitlayer");</script>';
            if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
            exit;
        }
        else
        {
            list($leftpart, $rightpart) = explode(".",DDOMAIN);
            if (strlen($rightpart)<3)
            {
                disperror(ERROR_NAME_LEN);
                if (REPEAT_SEARCH_WINDOW) include_once(FILE_NAME);
                if (WAIT_LAYER_ENABLED) echo '<script language="javascript">hidelayer("waitlayer");</script>';
                if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
                exit;
            }
        }
    }

    if (PROCESSING_TYPE=="2")
    {
        echo '<form action="'.LINK_EXTERNAL.'" method="POST">';
        echo '<input type="hidden" name="domain" value="'.DDOMAIN.'">';
    }

    echo '<table align="center" width="600" border="0" cellspacing="0" cellpadding="0">
        <tr><td width="100%" class="windowborder"><table width="600" border="0" cellspacing="1" cellpadding="2">
        <tr><td class="windowinside"><table width="100%" align="center" cellspacing="0" cellpadding="1">
        <tr>
            <td nowrap align="center" class="separator">[b]Domain[/b]</td>
            <td nowrap align="center" class="separator">[b]Status[/b]</td>
            <td nowrap align="center" class="separator">[b]Action[/b]</td>
        </tr>';

    $avno=0; 
    if (USE_ENGINE=="1") {
        if (TYPE == 'all') {
            $fp = fopen(FILE_NAME_SERVERS,"r");
            while (!feof ($fp)) {
                $data = fgets($fp, 4096);
                if (!eregi('##',$data)) {
                    list($tld, $include, $server, $nomatch, $link) = explode("|",$data);
                    if ($include=="1" and $tld!="name") {
                        $ddomain = eregi_replace(" ","",DDOMAIN);
                        $domname = $ddomain.".".$tld;
                        $domname2 = escapeshellcmd ($domname).".";
                        if (checkdnsrr($domname2.".","NS")==false) // check if there is a nameserver assigned to a domain
                        {
                            if(USE_EXTRACHECK)
                            {
                                $extrano = extracheck($domname,$server,$nomatch);
                                if ($extrano=="1") {
                                    dispav($domname,$link,$ddomain,$tld,0);
                                    $avno=1;
                                } else {
                                    dispun($domname,$server);
                                }
                            } else {
                                dispav($domname,$link,$ddomain,$tld,0);
                                $avno=1;
                            }
                        } else {
                            if(USE_CNAMECHECK)
                            {
                                // check if the domain is a canonical name
                                if (checkdnsrr($domname2.".","CNAME")==true)
                                {
                                    dispav($domname,$link,$ddomain,$tld,1);
                                    $avno=1;
                                } else {
                                    dispun($domname,$server);
                                }
                            } else {
                                dispun($domname,$server);
                            }
                        }
                    }
                    else if ($include=="1" and $tld=="name") {
                        echo "<tr><td colspan=3 align=center><font size=-2>".NAME_WARNING."</font></td></tr>";
                    }
                }
            }
            fclose($fp);
        } else {
            $fp = fopen(FILE_NAME_SERVERS,"r");
            while (!feof ($fp)) {
                $data = fgets($fp, 4096);
                if (!eregi('##',$data)) {
                    list($tld, $include, $server, $nomatch, $link) = explode("|",$data);
                    if ($tld==TYPE) {
                        $ddomain = eregi_replace(" ","",DDOMAIN);
                        $domname = $ddomain.".".$tld;
                        $domname2 = escapeshellcmd ($domname).".";
                        if (checkdnsrr($domname2.".","NS")==false)
                        {
                            if (USE_EXTRACHECK)
                            {
                                $extrano = extracheck($domname,$server,$nomatch);
                                if ($extrano=="1") {
                                    dispav($domname,$link,$ddomain,$tld,0);
                                    $avno=1;
                                } else {
                                    dispun($domname,$server);
                                }
                            } else {
                                dispav($domname,$link,$ddomain,$tld,0);
                                $avno=1;
                            }
                        } else {
                            if (USE_CNAMECHECK)
                            {
                            // check if the domain is a canonical name
                                if (checkdnsrr($domname2.".","CNAME")==true)
                                {
                                    dispav($domname,$link,$ddomain,$tld,1);
                                    $avno=1;
                                } else {
                                    dispun($domname,$server);
                                }
                            } else {
                                dispun($domname,$server);
                            }
                        }
                    }
                }
            }
            fclose($fp);
        }


    // using nslookup command
    
    } else if (USE_ENGINE=="2") {

        if (TYPE == 'all') {
            $fp = fopen(FILE_NAME_SERVERS,"r");
            while (!feof ($fp)) {
                $data = fgets($fp, 4096);
                if (!eregi('##',$data)) {
                    list($tld, $include, $server, $nomatch, $link) = explode("|",$data);
                    if ($include=="1" and $tld!="name") {
                        $ddomain = eregi_replace(" ","",DDOMAIN);
                        $domname = $ddomain.".".$tld; $domname2 = escapeshellcmd ($domname);
                        $result = ""; $outputstring = "";
                        $command2 = "nslookup -type=ns $domname2";
                        exec ($command2,$result);
                        $outputno = count($result);
                        for ($ino=0;$ino<=$outputno;$ino++) { $outputstring .= $result[$ino]; }
                        if (!eregi("nameserver",$outputstring)) { 
                            if (USE_EXTRACHECK)
                            {
                                $extrano = extracheck($domname,$server,$nomatch);
                                if ($extrano==1) {
                                    dispav($domname,$link,$ddomain,$tld,0);
                                    $avno=1;
                                } else {
                                    dispun($domname,$server);
                                }
                            } else {
                                dispav($domname,$link,$ddomain,$tld,0);
                                $avno=1;
                            }
                        } else { 
                            if (USE_CNAMECHECK)
                            {
                                // check if the domain is a canonical name
                                $command3 = "nslookup -type=cname $domname2";
                                exec ($command3,$result3);
                                $outputno3 = count($result3);
                                for ($ino3=0;$ino3<=$outputno3;$ino3++) { $outputstring3 .= $result3[$ino3]; }
                                if (!eregi("canonical",$outputstring3)) { 
                                    dispun($domname,$server);
                                } else {
                                    dispav($domname,$link,$ddomain,$tld,1);
                                    $avno=1;
                                }
                            } else {
                                dispun($domname,$server);
                            }
                        }
                    } else if ($include=="1" and $tld=="name") {
                        echo "<tr><td colspan=3 align=center><font size=-2>".NAME_WARNING."</font></td></tr>";
                    }
                }
            }
            fclose($fp);
        } else {
            $fp = fopen(FILE_NAME_SERVERS,"r");
            while (!feof ($fp)) {
                $data = fgets($fp, 4096);
                if (!eregi('##',$data)) {
                    list($tld, $include, $server, $nomatch, $link) = explode("|",$data);
                    if ($tld==TYPE) {
                        $ddomain = eregi_replace(" ","",DDOMAIN);
                        $domname = $ddomain.".".$tld; $domname2 = escapeshellcmd ($domname);
                        $result = ""; $outputstring = "";
                        $command2 = "nslookup -type=ns $domname2";
                        exec ($command2,$result);
                        $outputno = count($result);
                        for ($ino=0;$ino<=$outputno;$ino++) { $outputstring .= $result[$ino]; }
                        if (!eregi("nameserver",$outputstring)) {
                            if (USE_EXTRACHECK)
                            {
                                $extrano = extracheck($domname,$server,$nomatch);
                                if ($extrano==1) {
                                    dispav($domname,$link,$ddomain,$tld,0);
                                    $avno=1;
                                } else {
                                    dispun($domname,$server);
                                }
                            } else {
                                dispav($domname,$link,$ddomain,$tld,0);
                                $avno=1;
                            }
                        } else { 
                            if (USE_CNAMECHECK)
                            {
                                // check if the domain is a canonical name
                                $command3 = "nslookup -type=cname $domname2";
                                exec ($command3,$result3);
                                $outputno3 = count($result3);
                                for ($ino3=0;$ino3<=$outputno3;$ino3++) { $outputstring3 .= $result3[$ino3]; }
                                if (!eregi("canonical",$outputstring3)) { 
                                    dispun($domname,$server);
                                } else {
                                    dispav($domname,$link,$ddomain,$tld,1);
                                    $avno=1;
                                }
                            } else {
                                dispun($domname,$server);
                            }
                        }
                    }
                }
            }
            fclose($fp);
        }

    } else {


    // using engine "3" - fsockopen() function - slowest but most reliable

        if (TYPE == 'all') {
            $fp = fopen(FILE_NAME_SERVERS,"r");
            while (!feof ($fp)) {
                $data = fgets($fp, 4096);
                if (!eregi('##',$data)) {
                    list($tld, $include, $server, $nomatch, $link) = explode("|",$data);
                    if ($include=="1" and $tld!="name") {
                        $ddomain = eregi_replace(" ","",DDOMAIN);
                        $domname = $ddomain.".".$tld;
                        $result = "";
                        $ns = fsockopen($server,43); fputs($ns,"$domname\r\n");
                        while(!feof($ns)) $result .= fgets($ns,128); fclose($ns);
                        if (eregi($nomatch,$result)) { $avno=1; dispav($domname,$link,$ddomain,$tld,0); } else dispun($domname,$server);
                    } else if ($include=="1" and $tld=="name") {
                        echo "<tr><td colspan=3 align=center><font size=-2>".NAME_WARNING."</font></td></tr>";
                    }
                }
            }
            fclose($fp);
        }
        else
        {
            $fp = fopen(FILE_NAME_SERVERS,"r");
            while (!feof ($fp)) {
                $data = fgets($fp, 4096);
                if (!eregi('##',$data)) {
                    list($tld, $include, $server, $nomatch, $link) = explode("|",$data);
                    if ($tld==TYPE) {
                        $ddomain = eregi_replace(" ","",DDOMAIN);
                        $domname = $ddomain.".".$tld;
                        $result = "";
                        $ns = fsockopen($server,43); fputs($ns,"$domname\r\n");
                        while(!feof($ns)) $result .= fgets($ns,128); fclose($ns);
                        if (eregi($nomatch,$result)) 
                        { $avno=1; dispav($domname,$link,$ddomain,$tld,0); } else { dispun($domname,$server); }
                    }
                }
            }
            fclose($fp);
        }
    }
    if (PROCESSING_TYPE=="2" and $avno==1)
    {
        echo '<tr><td colspan="3" align="right"><input type=submit value="'.BUTTON_NEXT.'"></td></tr>';
    }

    echo '</table>';
    echo '</td></tr></table></td></tr></table>';

    if (PROCESSING_TYPE=="2")
    {
        echo '</form>';
    }


    if (WAIT_LAYER_ENABLED) { echo '<script language="javascript">hidelayer("waitlayer");</script>'; }

    // if logging enabled write info to the file
    if(WANTLOG)    {
        $remote_addr = $REMOTE_ADDR;
        $today = date("d-m-y H:i", time());
        if (file_exists(FILE_NAME_LOG) and is_writeable(FILE_NAME_LOG))    {
            $fp = fopen(FILE_NAME_LOG,"a+");
            $infolog = "Date: $today | IP: $remote_addr | ".DDOMAIN."\n";
            fputs($fp, $infolog);
            fclose($fp);
        }
    }
    if (REPEAT_SEARCH_WINDOW)
    {
        include_once(FILE_NAME);
    }
    if (DISPLAY_RESULT_FOOTER) include_once(FILE_NAME_FOOTER);
    echo "&dom= $domname"; //non toccare

    echo "&dom2= $domname2"; //non toccare

    echo"&result= $result"; //non toccare
    echo"&mess= $what $whare";

    
?>