<?php
/*
+---------------------------------------------------------------------------
|   PHP-IRC v2.2.1 Service Release
|   ========================================================
|   by Manick
|   (c) 2001-2005 by http://www.phpbots.org/
|   Contact: manick@manekian.com
|   irc: #manekian@irc.rizon.net
|   ========================================
+---------------------------------------------------------------------------
|   > dcc module
|   > Module written by Manick
|   > Module Version Number: 2.2.0
+---------------------------------------------------------------------------
|   > 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 2
|   > 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, write to the Free Software
|   > Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+---------------------------------------------------------------------------
|   Changes
|   =======-------
|   > If you wish to suggest or submit an update/change to the source
|   > code, email me at manick@manekian.com with the change, and I
|   > will look to adding it in as soon as I can.
+---------------------------------------------------------------------------
*/

class dcc {

	private $dccList = array();			//holds all connected sockets
	private $dccChangedList = array();
	private $dccChangedCount = 0;
	
	private $fileDlCount = 0;
	private $fileUlCount = 0;
	private $chatCount = 0;

	//Classes
	private $timerClass;
	private $socketClass;
	private $ircClass;
	private $parserClass;
	
	//Bytes Transferred
	private $bytesUp = 0;
	private $bytesDown = 0;

	//Process Queue
	private $procQueue;

	public function __construct()
	{
		// do nothing...
	}

	public function setProcQueue($class)
	{
		$this->procQueue = $class;
	}

	public function setIrcClass($class)
	{
		$this->ircClass = $class;
	}

	public function setParserClass($class)
	{
		$this->parserClass = $class;
		$this->parserClass->setDccClass($this);
	}

	public function setSocketClass($class)
	{
		$this->socketClass = $class;
	}

	public function setTimerClass($class)
	{
		$this->timerClass = $class;
	}

	public function getDownloadCount()
	{
		return $this->fileDlCount;
	}

	public function getUploadCount()
	{
		return $this->fileUlCount;
	}

	public function getChatCount()
	{
		return $this->chatCount;
	}

	public function closeAll()
	{
		foreach ($this->dccList AS $dcc)
		{
			$dcc->disconnect("Owner Requsted Close");
		}
	}
	
	public function addBytesUp($num)
	{
		$this->bytesUp += $num;
	}

	public function addBytesDown($num)
	{
		$this->bytesDown += $num;
	}

	public function getBytesDown()
	{
		return $this->bytesDown;
	}

	public function getBytesUp()
	{
		return $this->bytesUp;
	}


	public function getDcc($someDcc)
	{
		if (isset($this->dccList[$someDcc]))
		{
			return $this->dccList[$someDcc];
		}

		return false;
	}


	public function dccInform($data, $from = null)
	{
    	foreach ($this->dccList AS $dcc)
		{
			if ($dcc->type == CHAT && $dcc->verified == true && $dcc->isAdmin == true)
			{
				if ($from != null)
				{
					if ($dcc->sockInt != $from->sockInt)
					{
						$dcc->dccSend($data);
					}
				}
				else
				{
					$dcc->dccSend($data);
				}

			}

		}
	}

	//Works in conjunction with $oldConn->connected
	public function accepted($oldConn, $newConn)
	{
		$sockInt = $oldConn->getSockInt();
		$hasAccepted = $newConn->getSockInt();
		
		$dcc = $this->dccList[$sockInt];
		$this->dccList[$hasAccepted] = $dcc;
		$dcc->status = DCC_CONNECTED;
		$dcc->sockInt = $hasAccepted;
		unset($this->dccList[$sockInt]);
	}

	//CheckDccTimeout function
	public function checkDccTimeout($dcc)
	{
		if (!is_object($dcc) || $dcc->removed == true)
		{
			return false;
		}

		if ($dcc->status != DCC_LISTENING)
		{
			return false;
		}

		switch ($dcc->timeOutLevel)
		{
			case 0:
				$dcc->timeOutLevel++;
				break;
			case 1:
				$dcc->timeOutLevel++;
				$this->ircClass->notice($dcc->nick, "You have a DCC session pending.  Set your client to connect.  60 seconds before timeout.", 1);
				break;
			case 2:
				$dcc->timeOutLevel++;
				$this->ircClass->notice($dcc->nick, "You have a DCC session pending.  Set your client to connect.  30 seconds before timeout.", 1);
				break;
			case 3:
				$dcc->timeOutLevel = 0;
				$dcc->disconnect("DCC Session timed out (90 Seconds)");
				return false;
				break;
			default:
				break;
		}
		
		return true;

	}

	public function getDccList()
	{
		return $this->dccList;
	}

	private function removeDcc($dcc)
	{
		$sockInt = $dcc->sockInt;
		unset($this->dccList[$sockInt]);
	}

	public function dccSend($to, $data)
	{
		if (($len = $this->socketClass->sendSocket($to->sockInt, $data)) === false)
		{
			$to->disconnect();
		}
		return $len;
	}


	private function highestId()
	{
		$highest = 0;

		foreach ($this->dccList AS $index => $dcc)
		{
			$highest = ($dcc->id > $highest ? $dcc->id : $highest);
		}

		return $highest + 1;
	}


	public function addChat($nick, $host, $port, $admin, $handler, $fromTimer = false)
	{
		$lnick = irc::myStrToLower($nick);

		foreach ($this->dccList AS $index => $dcc)
		{
			if ($dcc->type == CHAT)
			{
				if (irc::myStrToLower($dcc->nick) == $lnick)
				{
					$dcc->disconnect();
					break;
				}
			}
		}

		$reverse = false;

		if ($this->ircClass->getClientConf("mircdccreverse") != "" && $fromTimer == false)
		{
			$port = intval($this->ircClass->getClientConf("mircdccreverse"));
			if ($port == 0)
			{
				return NULL;
			}

			$args = new argClass;

			$args->arg1 = $nick;
			$args->arg2 = $host;
			$args->arg3 = $port;
			$args->arg4 = $admin;
			$args->arg5 = $handler;
			$args->arg7 = time();
			$args->arg8 = CHAT;

			$this->ircClass->notice($nick, "DCC: NOTICE: This server is using the mIRC Chat Server Protocol.  Please use ' /dccserver +c on " . $this->ircClass->getClientConf("mircdccreverse") . " ' to chat with me!  Starting 6 second delay...", 0);

			$this->ircClass->sendRaw("WHOIS " . $nick);
			$this->timerClass->addTimer(irc::randomHash(), $this, "reverseTimer", $args, 6, false);
			return;
		}

		if ($fromTimer == true)
		{
			$reverse = DCC_REVERSE; // using mIRC dcc reverse protocol
		}

		if ($host == NULL || $port == NULL)
		{
			$conn = new connection(null, null, 0);
			$listening = true;
			$status = DCC_LISTENING;
		}
		else
		{
			$conn = new connection($host, $port, CONNECT_TIMEOUT);
			$listening = false;
			$status = DCC_CONNECTING;
		}

		$conn->setSocketClass($this->socketClass);
		$conn->setIrcClass($this->ircClass);
		$conn->setCallbackClass($this);
		$conn->setTimerClass($this->timerClass);
		$port = $conn->init();

		if ($conn->getError())
		{
			$this->ircClass->log("Start Chat Error: " . $conn->getErrorMsg());
			return false;
		}

		$sockInt = $conn->getSockInt();

		$this->chatCount++;

		$id = $this->highestId();

		$chat = new chat($id, $nick, $admin, $sockInt, $host, $port, $handler, $reverse);
		$chat->setIrcClass($this->ircClass);
		$chat->setDccClass($this);
		$chat->setParserClass($this->parserClass);
		$chat->setSocketClass($this->socketClass);
		$chat->setTimerClass($this->timerClass);
		$chat->connection = $conn;
		$chat->status = $status;
		$chat->removed = false;

		$this->dccList[$sockInt] = $chat;

		$chat->initialize();
		
		$conn->setCallbackClass($chat);

		if ($listening == true)
		{
			$this->timerClass->addTimer(irc::randomHash(), $this, "checkDccTimeout", $chat, 30, true);
		}
		else
		{
			$conn->connect();
		}
		
		return $port;
	}
	
	public function addFile($nick, $host, $port, $type, $filename, $size, $fromTimer = false) // <-- ignore fromTimer, it is sent by reverseTimer() above
	{
		$reverse = false;

		if ($this->ircClass->getClientConf("mircdccreverse") != "" && $fromTimer == false && $type != DOWNLOAD)
		{
			$port = intval($this->ircClass->getClientConf("mircdccreverse"));
			if ($port == 0)
			{
				return NULL;
			}

			$args = new argClass;

			$args->arg1 = $nick;
			$args->arg2 = $host;
			$args->arg3 = $port;
			$args->arg4 = $type;
			$args->arg5 = $filename;
			$args->arg6 = $size;
			$args->arg7 = time();
			$args->arg8 = FILE;

			$this->ircClass->notice($nick, "DCC: NOTICE: This server is using the mIRC File Server Protocol.  Please use ' /dccserver +s on " . $this->ircClass->getClientConf("mircdccreverse") . " ' to recieve files from me!  Starting 6 second delay...", 0);

			$this->ircClass->sendRaw("WHOIS " . $nick);
			$this->timerClass->addTimer(irc::randomHash(), $this, "reverseTimer", $args, 6);
			return;
		}

		if ($fromTimer == true)
		{
			$reverse = DCC_REVERSE; // using mIRC dcc reverse protocol
		}

		if ($host == NULL || $port == NULL)
		{
			$conn = new connection(null, null, 0);
			$listening = true;
			$status = DCC_LISTENING;
		}
		else
		{
			$conn = new connection($host, $port, CONNECT_TIMEOUT);
			$listening = false;
			$status = DCC_CONNECTING;
		}

		$conn->setSocketClass($this->socketClass);
		$conn->setIrcClass($this->ircClass);
		$conn->setCallbackClass($this);
		$conn->setTransTimeout(30);
		$conn->setTimerClass($this->timerClass);
		$port = $conn->init();

		if ($conn->getError())
		{
			$this->ircClass->log("File transfer start error: " . $conn->getErrorMsg());
			return false;
		}

		$sockInt = $conn->getSockInt();

		$id = $this->highestId();

		$file = new file($id, $nick, $sockInt, $host, $port, $type, $reverse);

		if ($file->transferType == UPLOAD)
		{
			$this->fileUlCount++;
		}
		else
		{
			$this->fileDlCount++;
		}

		$file->setIrcClass($this->ircClass);
		$file->setDccClass($this);
		$file->setSocketClass($this->socketClass);
		$file->setProcQueue($this->procQueue);
		$file->setTimerClass($this->timerClass);
		$file->connection = $conn;
		$file->status = $status;
		$file->removed = false;

		$this->dccList[$sockInt] = $file;

		$file->initialize($filename, $size);

		$conn->setCallbackClass($file);

		if ($listening == true)
		{
			$this->timerClass->addTimer(irc::randomHash(), $this, "checkDccTimeout", $file, 30, true);
		}
		
		if ($reverse == true)
		{
			$conn->connect();
		}

		return $port;
	}


	public function alterSocket($sockInt, $level, $opt, $val)
	{
		return $this->socketClass->alterSocket($sockInt, $level, $opt, $val);
	}


	public function reverseTimer($args)
	{
		$memData = $this->ircClass->getUserData($args->arg1);
		
		if ($memData == NULL || ($memData->host == "" || $memData->host == NULL))
		{
			$this->ircClass->notice($args->arg1, "DCC: ERROR: Couldn't resolve your hostname.  Try again?");
		}
		else
		{

			if ($args->arg8 == FILE)
			{
				$this->addFile(	$args->arg1,
								$memData->host,
								$this->ircClass->getClientConf("mircdccreverse"),
								$args->arg4,
								$args->arg5,
								$args->arg6,
								true);
			}
			else
			{
				$this->addChat(	$args->arg1,
								$memData->host,
								$this->ircClass->getClientConf("mircdccreverse"),
								$args->arg4,
								$args->arg5,
								true);
			}
		}
		
		return false;
	}

	public function sendFile($nick, $file)
	{
		return $this->addFile($nick, null, null, UPLOAD, $file, NULL);
	}


	public function dccResume($port, $size)
	{
		foreach ($this->dccList AS $dcc)
		{
			if ($dcc->type == FILE)
			{
				if ($dcc->port == $port)
				{
					$dcc->resume($size);
					break;
				}
			}
		}
	}

	public function dccAccept($port)
	{
		foreach ($this->dccList AS $dcc)
		{
			if ($dcc->type == FILE)
			{
				if ($dcc->port == $port)
				{
					$dcc->accepted();
					break;
				}
			}
		}
	}

	public function disconnect($dcc)
	{

		switch ($dcc->type)
		{
			case CHAT:
				$this->chatCount--;
				break;
			case FILE:
				switch($dcc->transferType)
				{
					case UPLOAD:
						$this->fileUlCount--;
						break;
					case DOWNLOAD:
						$this->fileDlCount--;
						break;
				}
				break;
			default:
				break;
		}
		
		$dcc->removed = true;

		$dcc->connection->disconnect();
		$this->removeDcc($dcc);

		return true;
	}


}

?>