<?php

class smtp
{
	public $smtp_port;
	public $time_out;
	public $host_name;
	public $log_file;
	public $relay_host;
	public $debug;
	public $auth;
	public $user;
	public $pass;
	public $sock;

	public function smtp($relay_host = '', $smtp_port = 25, $auth = false, $user, $pass)
	{
		$this->debug = false;
		$this->smtp_port = $smtp_port;
		$this->relay_host = $relay_host;
		$this->time_out = 30;
		$this->auth = $auth;
		$this->user = $user;
		$this->pass = $pass;
		$this->host_name = 'localhost';
		$this->log_file = '';
		$this->sock = false;
	}

	public function sendmail($to, $from, $subject = '', $body = '', $mailtype, $cc = '', $bcc = '', $additional_headers = '')
	{
		$mail_from = $this->get_address($this->strip_comment($from));
		$body = @ereg_replace('(^|(
))(\\.)', '\\1.\\3', $body);
		$header .= 'MIME-Version:1.0
';

		if ($mailtype == 'HTML') {
			$header .= 'Content-Type:text/html
';
		}

		$header .= 'To: ' . $to . '
';

		if ($cc != '') {
			$header .= 'Cc: ' . $cc . '
';
		}

		$header .= 'From: ' . $from . '<' . $from . '>
';
		$header .= 'Subject: ' . $subject . '
';
		$header .= $additional_headers;
		$header .= 'Date: ' . date('r') . '
';
		$header .= 'X-Mailer:By Redhat (PHP/' . phpversion() . ')
';
		list($msec, $sec) = explode(' ', microtime());
		$header .= 'Message-ID: <' . date('YmdHis', $sec) . '.' . $msec * 1000000 . '.' . $mail_from . '>
';
		$TO = explode(',', $this->strip_comment($to));

		if ($cc != '') {
			$TO = array_merge($TO, explode(',', $this->strip_comment($cc)));
		}

		if ($bcc != '') {
			$TO = array_merge($TO, explode(',', $this->strip_comment($bcc)));
		}

		$sent = true;

		foreach ($TO as $rcpt_to) {
			$rcpt_to = $this->get_address($rcpt_to);

			if (!$this->smtp_sockopen($rcpt_to)) {
				$this->log_write('Error: Cannot send email to ' . $rcpt_to . '
');
				$sent = false;
				continue;
			}

			if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
				$this->log_write('E-mail has been sent to <' . $rcpt_to . '>
');
			}
			else {
				$this->log_write('Error: Cannot send email to <' . $rcpt_to . '>
');
				$sent = false;
			}

			fclose($this->sock);
			$this->log_write('Disconnected from remote host
');
		}

		return $sent;
	}

	public function smtp_send($helo, $from, $to, $header, $body = '')
	{
		if (!$this->smtp_putcmd('HELO', $helo)) {
			return $this->smtp_error('sending HELO command');
		}

		if ($this->auth) {
			if (!$this->smtp_putcmd('AUTH LOGIN', base64_encode($this->user))) {
				return $this->smtp_error('sending HELO command');
			}

			if (!$this->smtp_putcmd('', base64_encode($this->pass))) {
				return $this->smtp_error('sending HELO command');
			}
		}

		if (!$this->smtp_putcmd('MAIL', 'FROM:<' . $from . '>')) {
			return $this->smtp_error('sending MAIL FROM command');
		}

		if (!$this->smtp_putcmd('RCPT', 'TO:<' . $to . '>')) {
			return $this->smtp_error('sending RCPT TO command');
		}

		if (!$this->smtp_putcmd('DATA')) {
			return $this->smtp_error('sending DATA command');
		}

		if (!$this->smtp_message($header, $body)) {
			return $this->smtp_error('sending message');
		}

		if (!$this->smtp_eom()) {
			return $this->smtp_error('sending <CR><LF>.<CR><LF> [EOM]');
		}

		if (!$this->smtp_putcmd('QUIT')) {
			return $this->smtp_error('sending QUIT command');
		}

		return true;
	}

	public function smtp_sockopen($address)
	{
		if ($this->relay_host == '') {
			return $this->smtp_sockopen_mx($address);
		}
		else {
			return $this->smtp_sockopen_relay();
		}
	}

	public function smtp_sockopen_relay()
	{
		$this->log_write('Trying to ' . $this->relay_host . ':' . $this->smtp_port . '
');
		$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
		if (!($this->sock && $this->smtp_ok())) {
			$this->log_write('Error: Cannot connenct to relay host ' . $this->relay_host . '
');
			$this->log_write('Error: ' . $errstr . ' (' . $errno . ')
');
			return false;
		}

		$this->log_write('Connected to relay host ' . $this->relay_host . '
');
		return true;
	}

	public function smtp_sockopen_mx($address)
	{
		$domain = @ereg_replace('^.+@([^@]+)$', '\\1', $address);

		if (!@getmxrr($domain, $MXHOSTS)) {
			$this->log_write('Error: Cannot resolve MX "' . $domain . '"
');
			return false;
		}

		foreach ($MXHOSTS as $host) {
			$this->log_write('Trying to ' . $host . ':' . $this->smtp_port . '
');
			$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
			if (!($this->sock && $this->smtp_ok())) {
				$this->log_write('Warning: Cannot connect to mx host ' . $host . '
');
				$this->log_write('Error: ' . $errstr . ' (' . $errno . ')
');
				continue;
			}

			$this->log_write('Connected to mx host ' . $host . '
');
			return true;
		}

		$this->log_write('Error: Cannot connect to any mx hosts (' . implode(', ', $MXHOSTS) . ')
');
		return false;
	}

	public function smtp_message($header, $body)
	{
		fputs($this->sock, $header . '
' . $body);
		$this->smtp_debug('> ' . str_replace('
', '
' . '> ', $header . '
> ' . $body . '
> '));
		return true;
	}

	public function smtp_eom()
	{
		fputs($this->sock, '
.
');
		$this->smtp_debug('. [EOM]
');
		return $this->smtp_ok();
	}

	public function smtp_ok()
	{
		$response = str_replace('
', '', fgets($this->sock, 512));
		$this->smtp_debug($response . '
');

		if (!@ereg('^[23]', $response)) {
			fputs($this->sock, 'QUIT
');
			fgets($this->sock, 512);
			$this->log_write('Error: Remote host returned "' . $response . '"
');
			return false;
		}

		return true;
	}

	public function smtp_putcmd($cmd, $arg = '')
	{
		if ($arg != '') {
			if ($cmd == '') {
				$cmd = $arg;
			}
			else {
				$cmd = $cmd . ' ' . $arg;
			}
		}

		fputs($this->sock, $cmd . '
');
		$this->smtp_debug('> ' . $cmd . '
');
		return $this->smtp_ok();
	}

	public function smtp_error($string)
	{
		$this->log_write('Error: Error occurred while ' . $string . '.
');
		return false;
	}

	public function log_write($message)
	{
		$this->smtp_debug($message);

		if ($this->log_file == '') {
			return true;
		}

		$message = date('M d H:i:s ') . get_current_user() . '[' . getmypid() . ']: ' . $message;
		if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, 'a'))) {
			$this->smtp_debug('Warning: Cannot open log file "' . $this->log_file . '"
');
			return false;
		}

		flock($fp, LOCK_EX);
		fputs($fp, $message);
		fclose($fp);
		return true;
	}

	public function strip_comment($address)
	{
		$comment = '\\([^()]*\\)';

		while (@ereg($comment, $address)) {
			$address = @ereg_replace($comment, '', $address);
		}

		return $address;
	}

	public function get_address($address)
	{
		$address = @ereg_replace('([ 	
])+', '', $address);
		$address = @ereg_replace('^.*<(.+)>.*$', '\\1', $address);
		return $address;
	}

	public function smtp_debug($message)
	{
		if ($this->debug) {
			echo $message . '<br>';
		}
	}

	public function get_attach_type($image_tag)
	{
		$filedata = array();
		$img_file_con = fopen($image_tag, 'r');
		unset($image_data);

		while ($tem_buffer = AddSlashes(fread($img_file_con, filesize($image_tag)))) {
			$image_data .= $tem_buffer;
		}

		fclose($img_file_con);
		$filedata['context'] = $image_data;
		$filedata['filename'] = basename($image_tag);
		$extension = substr($image_tag, strrpos($image_tag, '.'), strlen($image_tag) - strrpos($image_tag, '.'));

		switch ($extension) {
		case '.gif':
			$filedata['type'] = 'image/gif';
			break;

		case '.gz':
			$filedata['type'] = 'application/x-gzip';
			break;

		case '.htm':
			$filedata['type'] = 'text/html';
			break;

		case '.html':
			$filedata['type'] = 'text/html';
			break;

		case '.jpg':
			$filedata['type'] = 'image/jpeg';
			break;

		case '.tar':
			$filedata['type'] = 'application/x-tar';
			break;

		case '.txt':
			$filedata['type'] = 'text/plain';
			break;

		case '.zip':
			$filedata['type'] = 'application/zip';
			break;

		default:
			$filedata['type'] = 'application/octet-stream';
			break;
		}

		return $filedata;
	}
}

!defined('IN_MYMPS') && exit('FORBIDDEN');

?>