<?php
/******************************* PHP-P10 v2 *****************************
 * Copyright (C) 2011-2012  Philipp Kreil (pk910)                       *
 *                                                                      *
 * This program is free software: you can redistribute it and/or modify *
 * it under the terms of the GNU General Public License as published by *
 * the Free Software Foundation, either version 3 of the License, or    *
 * (at your option) any later version.                                  *
 *                                                                      * 
 * This program is distributed in the hope that it will be useful,      *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
 * GNU General Public License for more details.                         *
 *                                                                      *
 * You should have received a copy of the GNU General Public License    *
 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
 *                                                                      *
 ************************************************************************
 * 
 *  Bots/PerlGod.class.php
 *
 * simple Perl debugger...
 *
 */

class {$_NAME} extends Bot {
	private $uplink;
	private $bot, $execcache = array();
	
	public function load($uplink, $old = false) {
		$this->uplink = $uplink;
		if(!$old) {
			$nick = "Perl";
			$ident = "perl";
			$host = "Services.WebGamesNet.net";
			$ip = "0::0";
			$realname = "Perl Perl Perl Perl Perl";
			$modes = "ioknISD";
			$this->bot = $this->uplink->addUser($nick,$ident,$host,$ip,$modes,$realname);
			if(is_a($this->bot, "P10_User")) {
				$this->uplink->join($this->bot, "#perl", (P10_Channel::USERPRIV_OPED | P10_Channel::USERPRIV_VOICE));
				$this->uplink->join($this->bot, "#dev", P10_Channel::USERPRIV_VOICE);
                $this->uplink->join($this->bot, "#CoderCom", P10_Channel::USERPRIV_VOICE);
			}
		} else {
			$this->bot = $old;
		}
		
		ModCMD::bind($this, BIND_CHANMSG, "recive_privmsg");
		ModCMD::bind($this, BIND_QUIT, "recive_quit");
	}
	
	public function unload($rehash = false) {
		foreach($this->execcache as $id => $entry) {
			fclose($entry['pipes'][1]);
			fclose($entry['pipes'][2]);
			proc_terminate($entry['proc'],9);
		}
		$this->execcache = array();
		if($rehash) {
			return $this->bot;
		} else {
			$this->uplink->delUser($this->bot, "Bye.");
		}
	}
	
	public function loop() {
		foreach($this->execcache as $id => $entry) {
			if(!$this->checkstate($entry)) {
				unset($this->execcache[$id]);
			}
		}
	}
	
	function recive_privmsg($user, $channel, $message) {
		$opOnPerlChannel = false;
		$entryChannel = P10_Channel::getChannelByName("#Perl");
		if($entryChannel) {
			$privs = $entryChannel->getUserPrivs($user);
			$opOnPerlChannel = ($privs & P10_Channel::USERPRIV_OPED);
		}
		if(!$user->getModes()->hasMode('o') && !$opOnPerlChannel) return 0;
		$exp=explode(" ", $message, 2);
		switch (strtolower($exp[0])) {
			case "~perl":
				if(count($this->execcache) > 5) {
					$this->uplink->notice($this->bot, $user, "too many running perl processes at the moment!");
					return;
				}
				$entry=array();
				$entry['channel'] = $channel;
				$descriptor = array(0 => array("pipe", "r"),1 => array("pipe", "w"),2 => array("pipe", "w"));
				$entry['proc'] = proc_open('perl', $descriptor, $entry['pipes']);
				if(!is_resource($entry['proc'])) {
					$this->uplink->notice($this->bot, $user, "error while loading perl!");
					return;
				}
				$entry['time'] = time();
                if(preg_match("#pastebin\.com/([a-zA-Z0-9]*)$#i", $exp[1])) {
                    $pasteid = explode("/", $exp[1]);
                    $pasteid = $pasteid[count($pasteid)-1];
                    $codecontent = file_get_contents("http://pastebin.com/download.php?i=".$pasteid);
                    if(preg_match("#Unknown Paste ID!#i", $codecontent)) {
                        $this->uplink->notice($this->bot, $user, "Unknown Paste ID!");
                        return;
                    }
                    $code = $codecontent;
                } else {
                    $code = $exp[1];
                }
				fwrite($entry['pipes'][0], $code);
				fclose($entry['pipes'][0]);
				$this->execcache[] = $entry;
				break;
		}
	}
	
	function recive_quit($user, $reason) {
		if($user === $this->bot) {
			$this->load($this->uplink);
		}
	}
	
	function checkstate($entry) {
		$data = proc_get_status($entry['proc']);
		if(!$data['running']) {
			$out="";
			while(!feof($entry['pipes'][1])) {
				$out .= fgets($entry['pipes'][1], 128);
			}
			$eout="";
			while(!feof($entry['pipes'][2])) {
				$eout .= fgets($entry['pipes'][2], 128);
			}
			if($out != "") {
				$out=str_replace("\r","",$out);
				$lines=explode("\n",$out);
				$i=0;
				foreach($lines as $line) {
					$i++;
					if($i>1000) {
						$this->uplink->privmsg($this->bot, $entry['channel'], "too many lines!");
						break; 
					}
					$this->uplink->privmsg($this->bot, $entry['channel'], $line);
				}
			}
			if($eout != "") {
				$eout=str_replace("\r","",$eout);
				$lines=explode("\n",$eout);
				$i=0;
				foreach($lines as $line) {
					$i++;
					if($i>1000) { 
						$this->uplink->privmsg($this->bot, $entry['channel'], "too many lines!");
						break; 
					}
					$this->uplink->privmsg($this->bot, $entry['channel'], "4".$line."");
				}
			}
			fclose($entry['pipes'][1]);
			fclose($entry['pipes'][2]);
			proc_close($entry['proc']);
			return false;
		} else {
			if($entry['time']+10 > time()) {
				return true;
			} else {
				//TIMEOUT
				if($entry['term']) {
					fclose($entry['pipes'][1]);
					fclose($entry['pipes'][2]);
					proc_terminate($entry['proc'],9);
					$this->uplink->privmsg($this->bot, $entry['channel'], "perl hard timeout. sending SIGKILL");
					return false;
				} else {
					proc_terminate($entry['proc']);
					$entry['term']=true;
					$this->uplink->privmsg($this->bot, $entry['channel'], "perl timeout. (maximum of 10 seconds exceeded)  sending SIGTERM"); 
					return true;
				}
			}
		}
	}
	
}

?>