<?php

eb_hook('event_raw_message', 'iplogger_log_join($message);');

function iplogger_log_join($message)

{

  if ( $message['action'] == 'JOIN' )

  {

    $nick = mysql_real_escape_string($message['nick']);

    $basenick = basenick($nick);

    $host = mysql_real_escape_string($message['host']);

    $ip = ( $_ = @resolve_ip($message['host'], $message['user']) ) ? mysql_real_escape_string($_) : '0.0.0.0';

    $channel = mysql_real_escape_string($message['message']);

    $time = time();

    $query = "DELETE FROM ip_log WHERE

                nick = '$nick' AND

                basenick = '$basenick' AND

                ip = '$ip' AND

                hostname = '$host' AND

                channel = '$channel';";

    eb_mysql_query($query);

    $query = "INSERT INTO ip_log ( nick, basenick, ip, hostname, channel, time ) VALUES(

                '$nick',

                '$basenick',

                '$ip',

                '$host',

                '$channel',

                $time

              );";

    eb_mysql_query($query);

  }

  else if ( $message['ACTION'] == 'NICK' )

  {

    // this is for cross-referencing purposes.

    $nick = mysql_real_escape_string($message['message']);

    $basenick = basenick($message['nick']);

    $host = mysql_real_escape_string($message['host']);

    $ip = ( $_ = @resolve_ip($message['host'], $message['user']) ) ? mysql_real_escape_string($_) : '0.0.0.0';

    $channel = '__nickchange';

    $time = time();

    $query = "DELETE FROM ip_log WHERE

                nick = '$nick' AND

                basenick = '$basenick' AND

                ip = '$ip' AND

                hostname = '$host' AND

                channel = '$channel';";

    eb_mysql_query($query);

    $query = "INSERT INTO ip_log ( nick, basenick, ip, hostname, channel, time ) VALUES(

                '$nick',

                '$basenick',

                '$ip',

                '$host',

                '$channel',

                $time

              );";

    eb_mysql_query($query);

  }

}

/**

 * Attempt to eliminate mini-statuses and such from nicknames.

 * @example

 <code>

 $basenick = basenick('enanobot|debug');

 // $basenick = 'enanobot'

 </code>

 * @param string Nickname

 * @return string

 */

function basenick($nick)

{

  if ( preg_match('/^`/', $nick) )

  {

    $nick = substr($nick, 1);

  }

  return preg_replace('/(`|\|)(.+?)$/', '', $nick);

}

/**

 * Resolve an IP address. First goes by checking if it's a mibbit or CGI-IRC IP/user, then performs lookups accordingly.

 * @param string Hostname

 * @param string Username

 * @return string IP address

 */

function resolve_ip($host, $user)

{

  if ( $host == 'webchat.mibbit.com' )

  {

    return hex2ipv4($user);

  }

  return gethostbyname($host);

}

function hex2ipv4($ip)

{

  $ip = preg_replace('/^0x/', '', $ip);

  $ip = str_split($ip, 2);

  foreach ( $ip as &$byte )

  {

    $byte = hexdec($byte);

  }

  return implode('.', $ip);

}