<?php

/**

 * EnanoBot - the Enano CMS IRC logging and help automation bot

 * GPL and no warranty, see the LICENSE file for more info

 */

// parse command line

if ( isset($argv[1]) )

{

  $arg =& $argv[1];

  if ( $arg == '--daemon' || $arg == '-d' )

  {

    // attempt to fork...

    if ( function_exists('pcntl_fork') )

    {

      $pid = pcntl_fork();

      if ( $pid == -1 )

      {

        echo "Forking process failed.\n";

        exit(1);

      }

      else if ( $pid )

      {

        echo "EnanoBot daemon started, pid $pid\n";

        exit(0);

      }

      else

      {

        // do nothing, just continue.

      }

    }

    else

    {

      echo "No pcntl support in PHP, continuing in foreground\n";

    }

  }

  else if ( $arg == '-v' || $arg == '--verbose' )

  {

    define('LIBIRC_DEBUG', '');

  }

  else

  {

    echo <<<EOF

Usage: {$argv[0]}

Options:

  -d, --daemon     Run in background (requires pcntl support)

  -v, --verbose    Log communication to stdout (ignored if -d specified)

  -h, --help       This help message

EOF;

    exit(1);

  }

}

$censored_words = array('cock', 'fuck', 'cuck', 'funt', 'cunt', 'bitch');

$_shutdown = false;

function eb_censor_words($text)

{

  // return $text;

  global $censored_words;

  foreach ( $censored_words as $word )

  {

    $replacement = substr($word, 0, 1) . preg_replace('/./', '*', substr($word, 1));

    while ( stristr($text, $word) )

    {

      $text = preg_replace("/$word/i", $replacement, $text);

    }

  }

  return $text;

}

require('libirc.php');

require('hooks.php');

require('config.php');

@ini_set('display_errors', 'on');

error_reporting(E_ALL);

// load modules

foreach ( $modules as $module )

{

  $modulefile = "modules/$module.php";

  if ( file_exists($modulefile) )

  {

    require($modulefile);

  }

}

$mysql_conn = false;

$doctor = array();

function mysql_reconnect()

{

  global $mysql_conn, $mysql_host, $mysql_user, $mysql_pass, $mysql_dbname;

  if ( $mysql_conn )

  {

    @mysql_close($mysql_conn);

    if ( defined('LIBIRC_DEBUG') )

    {

      echo "< > Reconnecting to MySQL\n";

    }

  }

  // connect to MySQL

  $mysql_conn = @mysql_connect($mysql_host, $mysql_user, $mysql_pass);

  if ( !$mysql_conn )

  {

    $m_e = mysql_error();

    echo "Error connecting to MySQL: $m_e\n";

    exit(1);

  }

  $q = @mysql_query("USE `$mysql_dbname`;", $mysql_conn);

  if ( !$q )

  {

    $m_e = mysql_error();

    echo "Error selecting database: $m_e\n";

    exit(1);

  }

}

function eb_mysql_query($sql, $conn = false)

{

  global $mysql_conn, $irc;

  $m_et = false;

  while ( true )

  {

    $q = mysql_query($sql, $mysql_conn);

    if ( !$q )

    {

      $m_e = mysql_error();

      if ( strpos($m_e, 'gone away') && !$m_et )

      {

        mysql_reconnect();

        continue;

      }

      $m_et = true;

      $irc->close("MySQL query error: $m_e");

      exit(1);

    }

    break;

  }

  return $q;

}

mysql_reconnect();

$libirc_channels = array();

$irc = new Request_IRC($server);

$irc->connect($nick, $user, $name, $pass);

$irc->set_privmsg_handler('enanobot_privmsg_event');

foreach ( $channels as $channel )

{

  $libirc_channels[$channel] = $irc->join($channel, 'enanobot_channel_event');

  $channel_clean = preg_replace('/^[#&]/', '', $channel);

  $libirc_channels[$channel_clean] =& $libirc_channels[$channel];

  $irc->privmsg('ChanServ', "OP $channel $nick");

}

$irc->event_loop();

$irc->close();

mysql_close($mysql_conn);

function enanobot_channel_event($sockdata, $chan)

{

  global $irc, $nick, $mysql_conn, $privileged_list;

  $sockdata = trim($sockdata);

  $message = Request_IRC::parse_message($sockdata);

  $channelname = $chan->get_channel_name();

  eval(eb_fetch_hook('event_raw_message'));

  switch ( $message['action'] )

  {

    case 'JOIN':

      eval(eb_fetch_hook('event_join'));

      break;

    case 'PART':

      eval(eb_fetch_hook('event_part'));

      break;

    case 'PRIVMSG':

      enanobot_process_channel_message($sockdata, $chan, $message);

      break;

  }

}

function enanobot_process_channel_message($sockdata, $chan, $message)

{

  global $irc, $nick, $mysql_conn, $privileged_list;

  if ( strpos($message['message'], $nick) && !in_array($message['nick'], $privileged_list) && $message['nick'] != $nick )

  {

    $target_nick =& $message['nick'];

    $chan->msg("{$target_nick}, I'm only a bot. :-) You should probably rely on the advice of humans if you need further assistance.", true);

  }

  else

  {

    eval(eb_fetch_hook('event_channel_msg'));

  }

}

function enanobot_privmsg_event($message)

{

  global $privileged_list, $irc, $nick;

  static $part_cache = array();

  if ( in_array($message['nick'], $privileged_list) && $message['message'] == 'Suspend' && $message['action'] == 'PRIVMSG' )

  {

    foreach ( $irc->channels as $channel )

    {

      $part_cache[] = array($channel->get_channel_name(), $channel->get_handler());

      $channel->msg("I've received a request from {$message['nick']} to stop responding to requests, messages, and activities. Don't forget to unsuspend me with /msg $nick Resume when finished.", true);

      $channel->part("Logging and presence suspended by {$message['nick']}", true);

    }

  }

  else if ( in_array($message['nick'], $privileged_list) && $message['message'] == 'Resume' && $message['action'] == 'PRIVMSG' )

  {

    global $nick;

    foreach ( $part_cache as $chan_data )

    {

      $chan_name = substr($chan_data[0], 1);

      $GLOBALS[$chan_name] = $irc->join($chan_data[0], $chan_data[1]);

      $GLOBALS[$chan_name]->msg("Bot resumed by {$message['nick']}.", true);

      $irc->privmsg('ChanServ', "OP {$chan_data[0]} $nick");

    }

    $part_cache = array();

  }

  else if ( in_array($message['nick'], $privileged_list) && $message['message'] == 'Shutdown' && $message['action'] == 'PRIVMSG' )

  {

    $GLOBALS['_shutdown'] = true;

    $irc->close("Remote bot shutdown ordered by {$message['nick']}", true);

    return 'BREAK';

  }

  else if ( $message['action'] == 'PRIVMSG' )

  {

    eval(eb_fetch_hook('event_privmsg'));

  }

  else

  {

    eval(eb_fetch_hook('event_other'));

  }

}

if ( $_shutdown )

{

  exit(2);

}