/includes/phpmailer/class.phpmailer.php

<?php
////////////////////////////////////////////////////
// PHPMailer - PHP email class
//
// Class for sending email using either
// sendmail, PHP mail(), or SMTP.  Methods are
// based upon the standard AspEmail(tm) classes.
//
// Copyright (C) 2001 - 2003  Brent R. Matzelle
//
// License: LGPL, see LICENSE
////////////////////////////////////////////////////

/**
 * PHPMailer - PHP email transport class
 * @package PHPMailer
 * @author Brent R. Matzelle
 * @copyright 2001 - 2003 Brent R. Matzelle
 */
class mosPHPMailer
{
	/////////////////////////////////////////////////
	// PUBLIC VARIABLES
	/////////////////////////////////////////////////

	/**
	 * Email priority (1 = High, 3 = Normal, 5 = low).
	 * @var int
	 */
	var $Priority		  = 3;

	/**
	 * Sets the CharSet of the message.
	 * @var string
	 */
	var $CharSet			= "iso-8859-1";

	/**
	 * Sets the Content-type of the message.
	 * @var string
	 */
	var $ContentType		= "text/plain";

	/**
	 * Sets the Encoding of the message. Options for this are "8bit",
	 * "7bit", "binary", "base64", and "quoted-printable".
	 * @var string
	 */
	var $Encoding		  = "8bit";

	/**
	 * Holds the most recent mailer error message.
	 * @var string
	 */
	var $ErrorInfo		 = "";

	/**
	 * Sets the From email address for the message.
	 * @var string
	 */
	var $From				= "root@localhost";

	/**
	 * Sets the From name of the message.
	 * @var string
	 */
	var $FromName			= "Root User";

	/**
	 * Sets the Sender email (Return-Path) of the message.  If not empty,
	 * will be sent via -f to sendmail or as 'MAIL FROM' in smtp mode.
	 * @var string
	 */
	var $Sender			= "";

	/**
	 * Sets the Subject of the message.
	 * @var string
	 */
	var $Subject			= "";

	/**
	 * Sets the Body of the message.  This can be either an HTML or text body.
	 * If HTML then run IsHTML(true).
	 * @var string
	 */
	var $Body				= "";

	/**
	 * Sets the text-only body of the message.  This automatically sets the
	 * email to multipart/alternative.  This body can be read by mail
	 * clients that do not have HTML email capability such as mutt. Clients
	 * that can read HTML will view the normal Body.
	 * @var string
	 */
	var $AltBody			= "";

	/**
	 * Sets word wrapping on the body of the message to a given number of
	 * characters.
	 * @var int
	 */
	var $WordWrap		  = 0;

	/**
	 * Method to send mail: ("mail", "sendmail", or "smtp").
	 * @var string
	 */
	var $Mailer			= "mail";

	/**
	 * Sets the path of the sendmail program.
	 * @var string
	 */
	var $Sendmail		  = "/usr/sbin/sendmail";

	/**
	 * Path to PHPMailer plugins.  This is now only useful if the SMTP class
	 * is in a different directory than the PHP include path.
	 * @var string
	 */
	var $PluginDir		 = "";

	/**
	 *  Holds PHPMailer version.
	 *  @var string
	 */
	var $Version			= "1.73";

	/**
	 * Sets the email address that a reading confirmation will be sent.
	 * @var string
	 */
	var $ConfirmReadingTo  = "";

	/**
	 *  Sets the hostname to use in Message-Id and Received headers
	 *  and as default HELO string. If empty, the value returned
	 *  by SERVER_NAME is used or 'localhost.localdomain'.
	 *  @var string
	 */
	var $Hostname		  = "";

	/////////////////////////////////////////////////
	// SMTP VARIABLES
	/////////////////////////////////////////////////

	/**
	 *  Sets the SMTP hosts.  All hosts must be separated by a
	 *  semicolon.  You can also specify a different port
	 *  for each host by using this format: [hostname:port]
	 *  (e.g. "smtp1.example.com:25;smtp2.example.com").
	 *  Hosts will be tried in order.
	 *  @var string
	 */
	var $Host		= "localhost";

	/**
	 *  Sets the default SMTP server port.
	 *  @var int
	 */
	var $Port		= 25;

	/**
	 *  Sets the SMTP HELO of the message (Default is $Hostname).
	 *  @var string
	 */
	var $Helo		= "";

	/**
	 *  Sets SMTP authentication. Utilizes the Username and Password variables.
	 *  @var bool
	 */
	var $SMTPAuth	 = false;

	/**
	 *  Sets SMTP username.
	 *  @var string
	 */
	var $Username	 = "";

	/**
	 *  Sets SMTP password.
	 *  @var string
	 */
	var $Password	 = "";

	/**
	 *  Sets the SMTP server timeout in seconds. This function will not
	 *  work with the win32 version.
	 *  @var int
	 */
	var $Timeout	  = 10;

	/**
	 *  Sets SMTP class debugging on or off.
	 *  @var bool
	 */
	var $SMTPDebug	= false;

	/**
	 * Prevents the SMTP connection from being closed after each mail
	 * sending.  If this is set to true then to close the connection
	 * requires an explicit call to SmtpClose().
	 * @var bool
	 */
	var $SMTPKeepAlive = false;

	/**#@+
	 * @access private
	 */
	var $smtp			= NULL;
	var $to			  = array();
	var $cc			  = array();
	var $bcc			 = array();
	var $ReplyTo		 = array();
	var $attachment	  = array();
	var $CustomHeader	= array();
	var $message_type	= "";
	var $boundary		= array();
	var $language		= array();
	var $error_count	 = 0;
	var $LE			  = "\n";
	/**#@-*/

	/////////////////////////////////////////////////
	// VARIABLE METHODS
	/////////////////////////////////////////////////

	/**
	 * Sets message type to HTML.
	 * @param bool $bool
	 * @return void
	 */
	function IsHTML($bool) {
		if($bool == true)
			$this->ContentType = "text/html";
		else
			$this->ContentType = "text/plain";
	}

	/**
	 * Sets Mailer to send message using SMTP.
	 * @return void
	 */
	function IsSMTP() {
		$this->Mailer = "smtp";
	}

	/**
	 * Sets Mailer to send message using PHP mail() function.
	 * @return void
	 */
	function IsMail() {
		$this->Mailer = "mail";
	}

	/**
	 * Sets Mailer to send message using the $Sendmail program.
	 * @return void
	 */
	function IsSendmail() {
		$this->Mailer = "sendmail";
	}

	/**
	 * Sets Mailer to send message using the qmail MTA.
	 * @return void
	 */
	function IsQmail() {
		$this->Sendmail = "/var/qmail/bin/sendmail";
		$this->Mailer = "sendmail";
	}


	/////////////////////////////////////////////////
	// RECIPIENT METHODS
	/////////////////////////////////////////////////

	/**
	 * Adds a "To" address.
	 * @param string $address
	 * @param string $name
	 * @return void
	 */
	function AddAddress($address, $name = "") {
		$cur = count($this->to);
		$this->to[$cur][0] = trim($address);
		$this->to[$cur][1] = $name;
	}

	/**
	 * Adds a "Cc" address. Note: this function works
	 * with the SMTP mailer on win32, not with the "mail"
	 * mailer.
	 * @param string $address
	 * @param string $name
	 * @return void
	*/
	function AddCC($address, $name = "") {
		$cur = count($this->cc);
		$this->cc[$cur][0] = trim($address);
		$this->cc[$cur][1] = $name;
	}

	/**
	 * Adds a "Bcc" address. Note: this function works
	 * with the SMTP mailer on win32, not with the "mail"
	 * mailer.
	 * @param string $address
	 * @param string $name
	 * @return void
	 */
	function AddBCC($address, $name = "") {
		$cur = count($this->bcc);
		$this->bcc[$cur][0] = trim($address);
		$this->bcc[$cur][1] = $name;
	}

	/**
	 * Adds a "Reply-to" address.
	 * @param string $address
	 * @param string $name
	 * @return void
	 */
	function AddReplyTo($address, $name = "") {
		$cur = count($this->ReplyTo);
		$this->ReplyTo[$cur][0] = trim($address);
		$this->ReplyTo[$cur][1] = $name;
	}


	/////////////////////////////////////////////////
	// MAIL SENDING METHODS
	/////////////////////////////////////////////////

	/**
	 * Creates message and assigns Mailer. If the message is
	 * not sent successfully then it returns false.  Use the ErrorInfo
	 * variable to view description of the error.
	 * @return bool
	 */
	function Send() {
		$header = "";
		$body = "";
		$result = true;

		if((count($this->to) + count($this->cc) + count($this->bcc)) < 1)
		{
			$this->SetError($this->Lang("provide_address"));
			return false;
		}

		// Set whether the message is multipart/alternative
		if(!empty($this->AltBody))
			$this->ContentType = "multipart/alternative";

		$this->error_count = 0; // reset errors
		$this->SetMessageType();
		$header .= $this->CreateHeader();
		$body = $this->CreateBody();

		if($body == "") { return false; }

		// Choose the mailer
		switch($this->Mailer)
		{
			case "sendmail":
				$result = $this->SendmailSend($header, $body);
				break;
			case "mail":
				$result = $this->MailSend($header, $body);
				break;
			case "smtp":
				$result = $this->SmtpSend($header, $body);
				break;
			default:
			$this->SetError($this->Mailer . $this->Lang("mailer_not_supported"));
				$result = false;
				break;
		}

		return $result;
	}

	/**
	 * Sends mail using the $Sendmail program.
	 * @access private
	 * @return bool
	 */
	function SendmailSend($header, $body) {
		if ($this->Sender != "")
			$sendmail = sprintf("%s -oi -f %s -t", $this->Sendmail, $this->Sender);
		else
			$sendmail = sprintf("%s -oi -t", $this->Sendmail);

		if(!@$mail = popen($sendmail, "w"))
		{
			$this->SetError($this->Lang("execute") . $this->Sendmail);
			return false;
		}

		fputs($mail, $header);
		fputs($mail, $body);

		$result = pclose($mail) >> 8 & 0xFF;
		if($result != 0)
		{
			$this->SetError($this->Lang("execute") . $this->Sendmail);
			return false;
		}

		return true;
	}

	/**
	 * Sends mail using the PHP mail() function.
	 * @access private
	 * @return bool
	 */
	function MailSend($header, $body) {
		$to = "";
		for($i = 0; $i < count($this->to); $i++)
		{
			if($i != 0) { $to .= ", "; }
			$to .= $this->to[$i][0];
		}

		if ($this->Sender != "" && strlen(ini_get("safe_mode"))< 1)
		{
			$old_from = ini_get("sendmail_from");
			ini_set("sendmail_from", $this->Sender);
			$params = sprintf("-oi -f %s", $this->Sender);
			$rt = @mail($to, $this->EncodeHeader($this->Subject), $body,
						$header, $params);
		}
		else
			$rt = @mail($to, $this->EncodeHeader($this->Subject), $body, $header);

		if (isset($old_from))
			ini_set("sendmail_from", $old_from);

		if(!$rt)
		{
			$this->SetError($this->Lang("instantiate"));
			return false;
		}

		return true;
	}

	/**
	 * Sends mail via SMTP using PhpSMTP (Author:
	 * Chris Ryan).  Returns bool.  Returns false if there is a
	 * bad MAIL FROM, RCPT, or DATA input.
	 * @access private
	 * @return bool
	 */
	function SmtpSend($header, $body) {
		include_once($this->PluginDir . "class.smtp.php");
		$error = "";
		$bad_rcpt = array();

		if(!$this->SmtpConnect())
			return false;

		$smtp_from = ($this->Sender == "") ? $this->From : $this->Sender;
		if(!$this->smtp->Mail($smtp_from))
		{
			$error = $this->Lang("from_failed") . $smtp_from;
			$this->SetError($error);
			$this->smtp->Reset();
			return false;
		}

		// Attempt to send attach all recipients
		for($i = 0; $i < count($this->to); $i++)
		{
			if(!$this->smtp->Recipient($this->to[$i][0]))
				$bad_rcpt[] = $this->to[$i][0];
		}
		for($i = 0; $i < count($this->cc); $i++)
		{
			if(!$this->smtp->Recipient($this->cc[$i][0]))
				$bad_rcpt[] = $this->cc[$i][0];
		}
		for($i = 0; $i < count($this->bcc); $i++)
		{
			if(!$this->smtp->Recipient($this->bcc[$i][0]))
				$bad_rcpt[] = $this->bcc[$i][0];
		}

		if(count($bad_rcpt) > 0) // Create error message
		{
			for($i = 0; $i < count($bad_rcpt); $i++)
			{
				if($i != 0) { $error .= ", "; }
				$error .= $bad_rcpt[$i];
			}
			$error = $this->Lang("recipients_failed") . $error;
			$this->SetError($error);
			$this->smtp->Reset();
			return false;
		}

		if(!$this->smtp->Data($header . $body))
		{
			$this->SetError($this->Lang("data_not_accepted"));
			$this->smtp->Reset();
			return false;
		}
		if($this->SMTPKeepAlive == true)
			$this->smtp->Reset();
		else
			$this->SmtpClose();

		return true;
	}

	/**
	 * Initiates a connection to an SMTP server.  Returns false if the
	 * operation failed.
	 * @access private
	 * @return bool
	 */
	function SmtpConnect() {
		if($this->smtp == NULL) { $this->smtp = new SMTP(); }

		$this->smtp->do_debug = $this->SMTPDebug;
		$hosts = explode(";", $this->Host);
		$index = 0;
		$connection = ($this->smtp->Connected());

		// Retry while there is no connection
		while($index < count($hosts) && $connection == false)
		{
			if(strstr($hosts[$index], ":"))
				list($host, $port) = explode(":", $hosts[$index]);
			else
			{
				$host = $hosts[$index];
				$port = $this->Port;
			}

			if($this->smtp->Connect($host, $port, $this->Timeout))
			{
				if ($this->Helo != '')
					$this->smtp->Hello($this->Helo);
				else
					$this->smtp->Hello($this->ServerHostname());

				if($this->SMTPAuth)
				{
					if(!$this->smtp->Authenticate($this->Username,
												  $this->Password))
					{
						$this->SetError($this->Lang("authenticate"));
						$this->smtp->Reset();
						$connection = false;
					}
				}
				$connection = true;
			}
			$index++;
		}
		if(!$connection)
			$this->SetError($this->Lang("connect_host"));

		return $connection;
	}

	/**
	 * Closes the active SMTP session if one exists.
	 * @return void
	 */
	function SmtpClose() {
		if($this->smtp != NULL)
		{
			if($this->smtp->Connected())
			{
				$this->smtp->Quit();
				$this->smtp->Close();
			}
		}
	}

	/**
	 * Sets the language for all class error messages.  Returns false
	 * if it cannot load the language file.  The default language type
	 * is English.
	 * @param string $lang_type Type of language (e.g. Portuguese: "br")
	 * @param string $lang_path Path to the language file directory
	 * @access public
	 * @return bool
	 */
	function SetLanguage($lang_type, $lang_path = "language/") {
		if(file_exists($lang_path.'phpmailer.lang-'.$lang_type.'.php'))
			include($lang_path.'phpmailer.lang-'.$lang_type.'.php');
		else if(file_exists($lang_path.'phpmailer.lang-en.php'))
			include($lang_path.'phpmailer.lang-en.php');
		else
		{
			$this->SetError("Could not load language file");
			return false;
		}
		$this->language = $PHPMAILER_LANG;

		return true;
	}

	/////////////////////////////////////////////////
	// MESSAGE CREATION METHODS
	/////////////////////////////////////////////////

	/**
	 * Creates recipient headers.
	 * @access private
	 * @return string
	 */
	function AddrAppend($type, $addr) {
		$addr_str = $type . ": ";
		$addr_str .= $this->AddrFormat($addr[0]);
		if(count($addr) > 1)
		{
			for($i = 1; $i < count($addr); $i++)
				$addr_str .= ", " . $this->AddrFormat($addr[$i]);
		}
		$addr_str .= $this->LE;

		return $addr_str;
	}

	/**
	 * Formats an address correctly.
	 * @access private
	 * @return string
	 */
	function AddrFormat($addr) {
		if(empty($addr[1]))
			$formatted = $addr[0];
		else
		{
			$formatted = $this->EncodeHeader($addr[1], 'phrase') . " <" .
						 $addr[0] . ">";
		}

		return $formatted;
	}

	/**
	 * Wraps message for use with mailers that do not
	 * automatically perform wrapping and for quoted-printable.
	 * Original written by philippe.
	 * @access private
	 * @return string
	 */
	function WrapText($message, $length, $qp_mode = false) {
		$soft_break = ($qp_mode) ? sprintf(" =%s", $this->LE) : $this->LE;

		$message = $this->FixEOL($message);
		if (substr($message, -1) == $this->LE)
			$message = substr($message, 0, -1);

		$line = explode($this->LE, $message);
		$message = "";
		for ($i=0 ;$i < count($line); $i++)
		{
		  $line_part = explode(" ", $line[$i]);
		  $buf = "";
		  for ($e = 0; $e<count($line_part); $e++)
		  {
			  $word = $line_part[$e];
			  if ($qp_mode and (strlen($word) > $length))
			  {
				$space_left = $length - strlen($buf) - 1;
				if ($e != 0)
				{
					if ($space_left > 20)
					{
						$len = $space_left;
						if (substr($word, $len - 1, 1) == "=")
						  $len--;
						elseif (substr($word, $len - 2, 1) == "=")
						  $len -= 2;
						$part = substr($word, 0, $len);
						$word = substr($word, $len);
						$buf .= " " . $part;
						$message .= $buf . sprintf("=%s", $this->LE);
					}
					else
					{
						$message .= $buf . $soft_break;
					}
					$buf = "";
				}
				while (strlen($word) > 0)
				{
					$len = $length;
					if (substr($word, $len - 1, 1) == "=")
						$len--;
					elseif (substr($word, $len - 2, 1) == "=")
						$len -= 2;
					$part = substr($word, 0, $len);
					$word = substr($word, $len);

					if (strlen($word) > 0)
						$message .= $part . sprintf("=%s", $this->LE);
					else
						$buf = $part;
				}
			  }
			  else
			  {
				$buf_o = $buf;
				$buf .= ($e == 0) ? $word : (" " . $word);

				if (strlen($buf) > $length and $buf_o != "")
				{
					$message .= $buf_o . $soft_break;
					$buf = $word;
				}
			  }
		  }
		  $message .= $buf . $this->LE;
		}

		return $message;
	}

	/**
	 * Set the body wrapping.
	 * @access private
	 * @return void
	 */
	function SetWordWrap() {
		if($this->WordWrap < 1)
			return;

		switch($this->message_type)
		{
			case "alt":
			  // fall through
			case "alt_attachments":
			  $this->AltBody = $this->WrapText($this->AltBody, $this->WordWrap);
			  break;
			default:
			  $this->Body = $this->WrapText($this->Body, $this->WordWrap);
			  break;
		}
	}

	/**
	 * Assembles message header.
	 * @access private
	 * @return string
	 */
	function CreateHeader() {
		$result = "";

		// Set the boundaries
		$uniq_id = md5(uniqid(time()));
		$this->boundary[1] = "b1_" . $uniq_id;
		$this->boundary[2] = "b2_" . $uniq_id;

		$result .= $this->HeaderLine("Date", $this->RFCDate());
		if($this->Sender == "")
			$result .= $this->HeaderLine("Return-Path", trim($this->From));
		else
			$result .= $this->HeaderLine("Return-Path", trim($this->Sender));

		// To be created automatically by mail()
		if($this->Mailer != "mail")
		{
			if(count($this->to) > 0)
				$result .= $this->AddrAppend("To", $this->to);
			else if (count($this->cc) == 0)
				$result .= $this->HeaderLine("To", "undisclosed-recipients:;");
			if(count($this->cc) > 0)
				$result .= $this->AddrAppend("Cc", $this->cc);
		}

		$from = array();
		$from[0][0] = trim($this->From);
		$from[0][1] = $this->FromName;
		$result .= $this->AddrAppend("From", $from);

		// sendmail and mail() extract Bcc from the header before sending
		if((($this->Mailer == "sendmail") || ($this->Mailer == "mail")) && (count($this->bcc) > 0))
			$result .= $this->AddrAppend("Bcc", $this->bcc);

		if(count($this->ReplyTo) > 0)
			$result .= $this->AddrAppend("Reply-to", $this->ReplyTo);

		// mail() sets the subject itself
		if($this->Mailer != "mail")
			$result .= $this->HeaderLine("Subject", $this->EncodeHeader(trim($this->Subject)));

		$result .= sprintf("Message-ID: <%s@%s>%s", $uniq_id, $this->ServerHostname(), $this->LE);
		$result .= $this->HeaderLine("X-Priority", $this->Priority);
		$result .= $this->HeaderLine("X-Mailer", "PHPMailer [version " . $this->Version . "]");

		if($this->ConfirmReadingTo != "")
		{
			$result .= $this->HeaderLine("Disposition-Notification-To",
						"<" . trim($this->ConfirmReadingTo) . ">");
		}

		// Add custom headers
		for($index = 0; $index < count($this->CustomHeader); $index++)
		{
			$result .= $this->HeaderLine(trim($this->CustomHeader[$index][0]),
						$this->EncodeHeader(trim($this->CustomHeader[$index][1])));
		}
		$result .= $this->HeaderLine("MIME-Version", "1.0");

		switch($this->message_type)
		{
			case "plain":
				$result .= $this->HeaderLine("Content-Transfer-Encoding", $this->Encoding);
				$result .= sprintf("Content-Type: %s; charset=\"%s\"",
									$this->ContentType, $this->CharSet);
				break;
			case "attachments":
				// fall through
			case "alt_attachments":
				if($this->InlineImageExists())
				{
					$result .= sprintf("Content-Type: %s;%s\ttype=\"text/html\";%s\tboundary=\"%s\"%s",
									"multipart/related", $this->LE, $this->LE,
									$this->boundary[1], $this->LE);
				}
				else
				{
					$result .= $this->HeaderLine("Content-Type", "multipart/mixed;");
					$result .= $this->TextLine("\tboundary=\"" . $this->boundary[1] . '"');
				}
				break;
			case "alt":
				$result .= $this->HeaderLine("Content-Type", "multipart/alternative;");
				$result .= $this->TextLine("\tboundary=\"" . $this->boundary[1] . '"');
				break;
		}

		if($this->Mailer != "mail")
			$result .= $this->LE.$this->LE;

		return $result;
	}

	/**
	 * Assembles the message body.  Returns an empty string on failure.
	 * @access private
	 * @return string
	 */
	function CreateBody() {
		$result = "";

		$this->SetWordWrap();

		switch($this->message_type)
		{
			case "alt":
				$result .= $this->GetBoundary($this->boundary[1], "",
											  "text/plain", "");
				$result .= $this->EncodeString($this->AltBody, $this->Encoding);
				$result .= $this->LE.$this->LE;
				$result .= $this->GetBoundary($this->boundary[1], "",
											  "text/html", "");

				$result .= $this->EncodeString($this->Body, $this->Encoding);
				$result .= $this->LE.$this->LE;

				$result .= $this->EndBoundary($this->boundary[1]);
				break;
			case "plain":
				$result .= $this->EncodeString($this->Body, $this->Encoding);
				break;
			case "attachments":
				$result .= $this->GetBoundary($this->boundary[1], "", "", "");
				$result .= $this->EncodeString($this->Body, $this->Encoding);
				$result .= $this->LE;

				$result .= $this->AttachAll();
				break;
			case "alt_attachments":
				$result .= sprintf("--%s%s", $this->boundary[1], $this->LE);
				$result .= sprintf("Content-Type: %s;%s" .
									"\tboundary=\"%s\"%s",
									"multipart/alternative", $this->LE,
									$this->boundary[2], $this->LE.$this->LE);

				// Create text body
				$result .= $this->GetBoundary($this->boundary[2], "",
											  "text/plain", "") . $this->LE;

				$result .= $this->EncodeString($this->AltBody, $this->Encoding);
				$result .= $this->LE.$this->LE;

				// Create the HTML body
				$result .= $this->GetBoundary($this->boundary[2], "",
											  "text/html", "") . $this->LE;

				$result .= $this->EncodeString($this->Body, $this->Encoding);
				$result .= $this->LE.$this->LE;

				$result .= $this->EndBoundary($this->boundary[2]);

				$result .= $this->AttachAll();
				break;
		}
		if($this->IsError())
			$result = "";

		return $result;
	}

	/**
	 * Returns the start of a message boundary.
	 * @access private
	 */
	function GetBoundary($boundary, $charSet, $contentType, $encoding) {
		$result = "";
		if($charSet == "") { $charSet = $this->CharSet; }
		if($contentType == "") { $contentType = $this->ContentType; }
		if($encoding == "") { $encoding = $this->Encoding; }

		$result .= $this->TextLine("--" . $boundary);
		$result .= sprintf("Content-Type: %s; charset = \"%s\"",
							$contentType, $charSet);
		$result .= $this->LE;
		$result .= $this->HeaderLine("Content-Transfer-Encoding", $encoding);
		$result .= $this->LE;

		return $result;
	}

	/**
	 * Returns the end of a message boundary.
	 * @access private
	 */
	function EndBoundary($boundary) {
		return $this->LE . "--" . $boundary . "--" . $this->LE;
	}

	/**
	 * Sets the message type.
	 * @access private
	 * @return void
	 */
	function SetMessageType() {
		if(count($this->attachment) < 1 && strlen($this->AltBody) < 1)
			$this->message_type = "plain";
		else
		{
			if(count($this->attachment) > 0)
				$this->message_type = "attachments";
			if(strlen($this->AltBody) > 0 && count($this->attachment) < 1)
				$this->message_type = "alt";
			if(strlen($this->AltBody) > 0 && count($this->attachment) > 0)
				$this->message_type = "alt_attachments";
		}
	}

	/**
	 * Returns a formatted header line.
	 * @access private
	 * @return string
	 */
	function HeaderLine($name, $value) {
		return $name . ": " . $value . $this->LE;
	}

	/**
	 * Returns a formatted mail line.
	 * @access private
	 * @return string
	 */
	function TextLine($value) {
		return $value . $this->LE;
	}

	/////////////////////////////////////////////////
	// ATTACHMENT METHODS
	/////////////////////////////////////////////////

	/**
	 * Adds an attachment from a path on the filesystem.
	 * Returns false if the file could not be found
	 * or accessed.
	 * @param string $path Path to the attachment.
	 * @param string $name Overrides the attachment name.
	 * @param string $encoding File encoding (see $Encoding).
	 * @param string $type File extension (MIME) type.
	 * @return bool
	 */
	function AddAttachment($path, $name = "", $encoding = "base64",
							$type = "application/octet-stream") {
		if(!@is_file($path))
		{
			$this->SetError($this->Lang("file_access") . $path);
			return false;
		}

		$filename = basename($path);
		if($name == "")
			$name = $filename;

		$cur = count($this->attachment);
		$this->attachment[$cur][0] = $path;
		$this->attachment[$cur][1] = $filename;
		$this->attachment[$cur][2] = $name;
		$this->attachment[$cur][3] = $encoding;
		$this->attachment[$cur][4] = $type;
		$this->attachment[$cur][5] = false; // isStringAttachment
		$this->attachment[$cur][6] = "attachment";
		$this->attachment[$cur][7] = 0;

		return true;
	}

	/**
	 * Attaches all fs, string, and binary attachments to the message.
	 * Returns an empty string on failure.
	 * @access private
	 * @return string
	 */
	function AttachAll() {
		// Return text of body
		$mime = array();

		// Add all attachments
		for($i = 0; $i < count($this->attachment); $i++)
		{
			// Check for string attachment
			$bString = $this->attachment[$i][5];
			if ($bString)
				$string = $this->attachment[$i][0];
			else
				$path = $this->attachment[$i][0];

			$filename	= $this->attachment[$i][1];
			$name		= $this->attachment[$i][2];
			$encoding	= $this->attachment[$i][3];
			$type		= $this->attachment[$i][4];
			$disposition = $this->attachment[$i][6];
			$cid		 = $this->attachment[$i][7];

			$mime[] = sprintf("--%s%s", $this->boundary[1], $this->LE);
			$mime[] = sprintf("Content-Type: %s; name=\"%s\"%s", $type, $name, $this->LE);
			$mime[] = sprintf("Content-Transfer-Encoding: %s%s", $encoding, $this->LE);

			if($disposition == "inline")
				$mime[] = sprintf("Content-ID: <%s>%s", $cid, $this->LE);

			$mime[] = sprintf("Content-Disposition: %s; filename=\"%s\"%s",
							  $disposition, $name, $this->LE.$this->LE);

			// Encode as string attachment
			if($bString)
			{
				$mime[] = $this->EncodeString($string, $encoding);
				if($this->IsError()) { return ""; }
				$mime[] = $this->LE.$this->LE;
			}
			else
			{
				$mime[] = $this->EncodeFile($path, $encoding);
				if($this->IsError()) { return ""; }
				$mime[] = $this->LE.$this->LE;
			}
		}

		$mime[] = sprintf("--%s--%s", $this->boundary[1], $this->LE);

		return join("", $mime);
	}

	/**
	 * Encodes attachment in requested format.  Returns an
	 * empty string on failure.
	 * @access private
	 * @return string
	 */
	function EncodeFile ($path, $encoding = "base64") {
		if(!@$fd = fopen($path, "rb"))
		{
			$this->SetError($this->Lang("file_open") . $path);
			return "";
		}
		$magic_quotes = get_magic_quotes_runtime();
		set_magic_quotes_runtime(0);
		$file_buffer = fread($fd, filesize($path));
		$file_buffer = $this->EncodeString($file_buffer, $encoding);
		fclose($fd);
		set_magic_quotes_runtime($magic_quotes);

		return $file_buffer;
	}

	/**
	 * Encodes string to requested format. Returns an
	 * empty string on failure.
	 * @access private
	 * @return string
	 */
	function EncodeString ($str, $encoding = "base64") {
		$encoded = "";
		switch(strtolower($encoding)) {
		  case "base64":
			  // chunk_split is found in PHP >= 3.0.6
			  $encoded = chunk_split(base64_encode($str), 76, $this->LE);
			  break;
		  case "7bit":
		  case "8bit":
			  $encoded = $this->FixEOL($str);
			  if (substr($encoded, -(strlen($this->LE))) != $this->LE)
				$encoded .= $this->LE;
			  break;
		  case "binary":
			  $encoded = $str;
			  break;
		  case "quoted-printable":
			  $encoded = $this->EncodeQP($str);
			  break;
		  default:
			  $this->SetError($this->Lang("encoding") . $encoding);
			  break;
		}
		return $encoded;
	}

	/**
	 * Encode a header string to best of Q, B, quoted or none.
	 * @access private
	 * @return string
	 */
	function EncodeHeader ($str, $position = 'text') {
	  $x = 0;

	  switch (strtolower($position)) {
		case 'phrase':
		  if (!preg_match('/[\200-\377]/', $str)) {
			// Can't use addslashes as we don't know what value has magic_quotes_sybase.
			$encoded = addcslashes($str, "\0..\37\177\\\"");

			if (($str == $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str))
			  return ($encoded);
			else
			  return ("\"$encoded\"");
		  }
		  $x = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
		  break;
		case 'comment':
		  $x = preg_match_all('/[()"]/', $str, $matches);
		  // Fall-through
		case 'text':
		default:
		  $x += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
		  break;
	  }

	  if ($x == 0)
		return ($str);

	  $maxlen = 75 - 7 - strlen($this->CharSet);
	  // Try to select the encoding which should produce the shortest output
	  if (strlen($str)/3 < $x) {
		$encoding = 'B';
		$encoded = base64_encode($str);
		$maxlen -= $maxlen % 4;
		$encoded = trim(chunk_split($encoded, $maxlen, "\n"));
	  } else {
		$encoding = 'Q';
		$encoded = $this->EncodeQ($str, $position);
		$encoded = $this->WrapText($encoded, $maxlen, true);
		$encoded = str_replace("=".$this->LE, "\n", trim($encoded));
	  }

	  $encoded = preg_replace('/^(.*)$/m', " =?".$this->CharSet."?$encoding?\\1?=", $encoded);
	  $encoded = trim(str_replace("\n", $this->LE, $encoded));

	  return $encoded;
	}

	/**
	 * Encode string to quoted-printable.
	 * @access private
	 * @return string
	 */
	function EncodeQP ($str) {
		$encoded = $this->FixEOL($str);
		if (substr($encoded, -(strlen($this->LE))) != $this->LE)
			$encoded .= $this->LE;

		// Replace every high ascii, control and = characters
		$encoded = preg_replace('/([\000-\010\013\014\016-\037\075\177-\377])/e',
				  "'='.sprintf('%02X', ord('\\1'))", $encoded);
		// Replace every spaces and tabs when it's the last character on a line
		$encoded = preg_replace("/([\011\040])".$this->LE."/e",
				  "'='.sprintf('%02X', ord('\\1')).'".$this->LE."'", $encoded);

		// Maximum line length of 76 characters before CRLF (74 + space + '=')
		$encoded = $this->WrapText($encoded, 74, true);

		return $encoded;
	}

	/**
	 * Encode string to q encoding.
	 * @access private
	 * @return string
	 */
	function EncodeQ ($str, $position = "text") {
		// There should not be any EOL in the string
		$encoded = preg_replace("[\r\n]", "", $str);

		switch (strtolower($position)) {
		  case "phrase":
			$encoded = preg_replace("/([^A-Za-z0-9!*+\/ -])/e", "'='.sprintf('%02X', ord('\\1'))", $encoded);
			break;
		  case "comment":
			$encoded = preg_replace("/([\(\)\"])/e", "'='.sprintf('%02X', ord('\\1'))", $encoded);
		  case "text":
		  default:
			// Replace every high ascii, control =, ? and _ characters
			$encoded = preg_replace('/([\000-\011\013\014\016-\037\075\077\137\177-\377])/e',
				  "'='.sprintf('%02X', ord('\\1'))", $encoded);
			break;
		}

		// Replace every spaces to _ (more readable than =20)
		$encoded = str_replace(" ", "_", $encoded);

		return $encoded;
	}

	/**
	 * Adds a string or binary attachment (non-filesystem) to the list.
	 * This method can be used to attach ascii or binary data,
	 * such as a BLOB record from a database.
	 * @param string $string String attachment data.
	 * @param string $filename Name of the attachment.
	 * @param string $encoding File encoding (see $Encoding).
	 * @param string $type File extension (MIME) type.
	 * @return void
	 */
	function AddStringAttachment($string, $filename, $encoding = "base64",
								 $type = "application/octet-stream") {
		// Append to $attachment array
		$cur = count($this->attachment);
		$this->attachment[$cur][0] = $string;
		$this->attachment[$cur][1] = $filename;
		$this->attachment[$cur][2] = $filename;
		$this->attachment[$cur][3] = $encoding;
		$this->attachment[$cur][4] = $type;
		$this->attachment[$cur][5] = true; // isString
		$this->attachment[$cur][6] = "attachment";
		$this->attachment[$cur][7] = 0;
	}

	/**
	 * Adds an embedded attachment.  This can include images, sounds, and
	 * just about any other document.  Make sure to set the $type to an
	 * image type.  For JPEG images use "image/jpeg" and for GIF images
	 * use "image/gif".
	 * @param string $path Path to the attachment.
	 * @param string $cid Content ID of the attachment.  Use this to identify
	 *		the Id for accessing the image in an HTML form.
	 * @param string $name Overrides the attachment name.
	 * @param string $encoding File encoding (see $Encoding).
	 * @param string $type File extension (MIME) type.
	 * @return bool
	 */
	function AddEmbeddedImage($path, $cid, $name = "", $encoding = "base64",
							  $type = "application/octet-stream") {

		if(!@is_file($path))
		{
			$this->SetError($this->Lang("file_access") . $path);
			return false;
		}

		$filename = basename($path);
		if($name == "")
			$name = $filename;

		// Append to $attachment array
		$cur = count($this->attachment);
		$this->attachment[$cur][0] = $path;
		$this->attachment[$cur][1] = $filename;
		$this->attachment[$cur][2] = $name;
		$this->attachment[$cur][3] = $encoding;
		$this->attachment[$cur][4] = $type;
		$this->attachment[$cur][5] = false; // isStringAttachment
		$this->attachment[$cur][6] = "inline";
		$this->attachment[$cur][7] = $cid;

		return true;
	}

	/**
	 * Returns true if an inline attachment is present.
	 * @access private
	 * @return bool
	 */
	function InlineImageExists() {
		$result = false;
		for($i = 0; $i < count($this->attachment); $i++)
		{
			if($this->attachment[$i][6] == "inline")
			{
				$result = true;
				break;
			}
		}

		return $result;
	}

	/////////////////////////////////////////////////
	// MESSAGE RESET METHODS
	/////////////////////////////////////////////////

	/**
	 * Clears all recipients assigned in the TO array.  Returns void.
	 * @return void
	 */
	function ClearAddresses() {
		$this->to = array();
	}

	/**
	 * Clears all recipients assigned in the CC array.  Returns void.
	 * @return void
	 */
	function ClearCCs() {
		$this->cc = array();
	}

	/**
	 * Clears all recipients assigned in the BCC array.  Returns void.
	 * @return void
	 */
	function ClearBCCs() {
		$this->bcc = array();
	}

	/**
	 * Clears all recipients assigned in the ReplyTo array.  Returns void.
	 * @return void
	 */
	function ClearReplyTos() {
		$this->ReplyTo = array();
	}

	/**
	 * Clears all recipients assigned in the TO, CC and BCC
	 * array.  Returns void.
	 * @return void
	 */
	function ClearAllRecipients() {
		$this->to = array();
		$this->cc = array();
		$this->bcc = array();
	}

	/**
	 * Clears all previously set filesystem, string, and binary
	 * attachments.  Returns void.
	 * @return void
	 */
	function ClearAttachments() {
		$this->attachment = array();
	}

	/**
	 * Clears all custom headers.  Returns void.
	 * @return void
	 */
	function ClearCustomHeaders() {
		$this->CustomHeader = array();
	}


	/////////////////////////////////////////////////
	// MISCELLANEOUS METHODS
	/////////////////////////////////////////////////

	/**
	 * Adds the error message to the error container.
	 * Returns void.
	 * @access private
	 * @return void
	 */
	function SetError($msg) {
		$this->error_count++;
		$this->ErrorInfo = $msg;
	}

	/**
	 * Returns the proper RFC 822 formatted date.
	 * @access private
	 * @return string
	 */
	function RFCDate() {
		$tz = date("Z");
		$tzs = ($tz < 0) ? "-" : "+";
		$tz = abs($tz);
		$tz = ($tz/3600)*100 + ($tz%3600)/60;
		$result = sprintf("%s %s%04d", date("D, j M Y H:i:s"), $tzs, $tz);

		return $result;
	}

	/**
	 * Returns the appropriate server variable.  Should work with both
	 * PHP 4.1.0+ as well as older versions.  Returns an empty string
	 * if nothing is found.
	 * @access private
	 * @return mixed
	 */
	function ServerVar($varName) {
		global $HTTP_SERVER_VARS;
		global $HTTP_ENV_VARS;

		if(!isset($_SERVER))
		{
			$_SERVER = $HTTP_SERVER_VARS;
			if(!isset($_SERVER["REMOTE_ADDR"]))
				$_SERVER = $HTTP_ENV_VARS; // must be Apache
		}

		if(isset($_SERVER[$varName]))
			return $_SERVER[$varName];
		else
			return "";
	}

	/**
	 * Returns the server hostname or 'localhost.localdomain' if unknown.
	 * @access private
	 * @return string
	 */
	function ServerHostname() {
		if ($this->Hostname != "")
			$result = $this->Hostname;
		elseif ($this->ServerVar('SERVER_NAME') != "")
			$result = $this->ServerVar('SERVER_NAME');
		else
			$result = "localhost.localdomain";

		return $result;
	}

	/**
	 * Returns a message in the appropriate language.
	 * @access private
	 * @return string
	 */
	function Lang($key) {
		if(count($this->language) < 1)
			$this->SetLanguage("en"); // set the default language

		if(isset($this->language[$key]))
			return $this->language[$key];
		else
			return "Language string failed to load: " . $key;
	}

	/**
	 * Returns true if an error occurred.
	 * @return bool
	 */
	function IsError() {
		return ($this->error_count > 0);
	}

	/**
	 * Changes every end of line from CR or LF to CRLF.
	 * @access private
	 * @return string
	 */
	function FixEOL($str) {
		$str = str_replace("\r\n", "\n", $str);
		$str = str_replace("\r", "\n", $str);
		$str = str_replace("\n", $this->LE, $str);
		return $str;
	}

	/**
	 * Adds a custom header.
	 * @return void
	 */
	function AddCustomHeader($custom_header) {
		$this->CustomHeader[] = explode(":", $custom_header, 2);
	}
}

?>