chamilo /common/libraries/plugin/phpmailer/class.phpmailer.php

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<?php
/*~ class.phpmailer.php
.---------------------------------------------------------------------------.
|  Software: PHPMailer - PHP email class                                    |
|   Version: 2.3                                                            |
|   Contact: via sourceforge.net support pages (also www.codeworxtech.com)  |
|      Info: http://phpmailer.sourceforge.net                               |
|   Support: http://sourceforge.net/projects/phpmailer/                     |
| ------------------------------------------------------------------------- |
|    Author: Andy Prevost (project admininistrator)                         |
|    Author: Brent R. Matzelle (original founder)                           |
| Copyright (c) 2004-2007, Andy Prevost. All Rights Reserved.               |
| Copyright (c) 2001-2003, Brent R. Matzelle                                |
| ------------------------------------------------------------------------- |
|   License: Distributed under the Lesser General Public License (LGPL)     |
|            http://www.gnu.org/copyleft/lesser.html                        |
| This program is distributed in the hope that it will be useful - WITHOUT  |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     |
| FITNESS FOR A PARTICULAR PURPOSE.                                         |
| ------------------------------------------------------------------------- |
| We offer a number of paid services (www.codeworxtech.com):                |
| - Web Hosting on highly optimized fast and secure servers                 |
| - Technology Consulting                                                   |
| - Oursourcing (highly qualified programmers and graphic designers)        |
'---------------------------------------------------------------------------'

/**
 * PHPMailer - PHP email transport class
 * NOTE: Designed for use with PHP version 5 and up
 * @package PHPMailer
 * @author Andy Prevost
 * @copyright 2004 - 2008 Andy Prevost
 */

class PHPMailer
{
    
    /////////////////////////////////////////////////
    // PROPERTIES, PUBLIC
    /////////////////////////////////////////////////
    

    /**
     * Email priority (1 = High, 3 = Normal, 5 = low).
     * @var int
     */
    public $Priority = 3;
    
    /**
     * Sets the CharSet of the message.
     * @var string
     */
    public $CharSet = 'iso-8859-1';
    
    /**
     * Sets the Content-type of the message.
     * @var string
     */
    public $ContentType = 'text/plain';
    
    /**
     * Sets the Encoding of the message. Options for this are "8bit",
     * "7bit", "binary", "base64", and "quoted-printable".
     * @var string
     */
    public $Encoding = '8bit';
    
    /**
     * Holds the most recent mailer error message.
     * @var string
     */
    public $ErrorInfo = '';
    
    /**
     * Sets the From email address for the message.
     * @var string
     */
    public $From = 'root@localhost';
    
    /**
     * Sets the From name of the message.
     * @var string
     */
    public $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
     */
    public $Sender = '';
    
    /**
     * Sets the Subject of the message.
     * @var string
     */
    public $Subject = '';
    
    /**
     * Sets the Body of the message.  This can be either an HTML or text body.
     * If HTML then run IsHTML(true).
     * @var string
     */
    public $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
     */
    public $AltBody = '';
    
    /**
     * Sets word wrapping on the body of the message to a given number of
     * characters.
     * @var int
     */
    public $WordWrap = 0;
    
    /**
     * Method to send mail: ("mail", "sendmail", or "smtp").
     * @var string
     */
    public $Mailer = 'mail';
    
    /**
     * Sets the path of the sendmail program.
     * @var string
     */
    public $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
     */
    public $PluginDir = '';
    
    /**
     * Holds PHPMailer version.
     * @var string
     */
    public $Version = "2.3";
    
    /**
     * Sets the email address that a reading confirmation will be sent.
     * @var string
     */
    public $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
     */
    public $Hostname = '';
    
    /**
     * Sets the message ID to be used in the Message-Id header.
     * If empty, a unique id will be generated.
     * @var string
     */
    public $MessageID = '';
    
    /////////////////////////////////////////////////
    // PROPERTIES FOR SMTP
    /////////////////////////////////////////////////
    

    /**
     * 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
     */
    public $Host = 'localhost';
    
    /**
     * Sets the default SMTP server port.
     * @var int
     */
    public $Port = 25;
    
    /**
     * Sets the SMTP HELO of the message (Default is $Hostname).
     * @var string
     */
    public $Helo = '';
    
    /**
     * Sets connection prefix.
     * Options are "", "ssl" or "tls"
     * @var string
     */
    public $SMTPSecure = "";
    
    /**
     * Sets SMTP authentication. Utilizes the Username and Password variables.
     * @var bool
     */
    public $SMTPAuth = false;
    
    /**
     * Sets SMTP username.
     * @var string
     */
    public $Username = '';
    
    /**
     * Sets SMTP password.
     * @var string
     */
    public $Password = '';
    
    /**
     * Sets the SMTP server timeout in seconds. This function will not
     * work with the win32 version.
     * @var int
     */
    public $Timeout = 10;
    
    /**
     * Sets SMTP class debugging on or off.
     * @var bool
     */
    public $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
     */
    public $SMTPKeepAlive = false;
    
    /**
     * Provides the ability to have the TO field process individual
     * emails, instead of sending to entire TO addresses
     * @var bool
     */
    public $SingleTo = false;
    
    /**
     * Provides the ability to change the line ending
     * @var string
     */
    public $LE = "\r\n";
    
    /////////////////////////////////////////////////
    // PROPERTIES, PRIVATE
    /////////////////////////////////////////////////
    

    private $smtp = NULL;
    private $to = array();
    private $cc = array();
    private $bcc = array();
    private $ReplyTo = array();
    private $attachment = array();
    private $CustomHeader = array();
    private $message_type = '';
    private $boundary = array();
    private $language = array();
    private $error_count = 0;
    private $sign_cert_file = "";
    private $sign_key_file = "";
    private $sign_key_pass = "";

    /////////////////////////////////////////////////
    // METHODS, VARIABLES
    /////////////////////////////////////////////////
    

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

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

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

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

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

    /////////////////////////////////////////////////
    // METHODS, RECIPIENTS
    /////////////////////////////////////////////////
    

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

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

    /**
     * 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
     */
    public 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 'smtp' :
                $result = $this->SmtpSend($header, $body);
                break;
            case 'mail' :
                $result = $this->MailSend($header, $body);
                break;
            default :
                $result = $this->MailSend($header, $body);
                break;
        
     //$this->SetError($this->Mailer . $this->Lang('mailer_not_supported'));
        //$result = false;
        //break;
        }
        
        return $result;
    }

    /**
     * Sends mail using the $Sendmail program.
     * @access public
     * @return bool
     */
    public function SendmailSend($header, $body)
    {
        if ($this->Sender != '')
        {
            $sendmail = sprintf("%s -oi -f %s -t", escapeshellcmd($this->Sendmail), escapeshellarg($this->Sender));
        }
        else
        {
            $sendmail = sprintf("%s -oi -t", escapeshellcmd($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);
        if (version_compare(phpversion(), '4.2.3') == - 1)
        {
            $result = $result >> 8 & 0xFF;
        }
        if ($result != 0)
        {
            $this->SetError($this->Lang('execute') . $this->Sendmail);
            return false;
        }
        
        return true;
    }

    /**
     * Sends mail using the PHP mail() function.
     * @access public
     * @return bool
     */
    public function MailSend($header, $body)
    {
        
        $to = '';
        for($i = 0; $i < count($this->to); $i ++)
        {
            if ($i != 0)
            {
                $to .= ', ';
            }
            $to .= $this->AddrFormat($this->to[$i]);
        }
        
        $toArr = split(',', $to);
        
        $params = sprintf("-oi -f %s", $this->Sender);
        if ($this->Sender != '' && strlen(ini_get('safe_mode')) < 1)
        {
            $old_from = ini_get('sendmail_from');
            ini_set('sendmail_from', $this->Sender);
            if ($this->SingleTo === true && count($toArr) > 1)
            {
                foreach ($toArr as $key => $val)
                {
                    $rt = @mail($val, $this->EncodeHeader($this->SecureHeader($this->Subject)), $body, $header, $params);
                }
            }
            else
            {
                $rt = @mail($to, $this->EncodeHeader($this->SecureHeader($this->Subject)), $body, $header, $params);
            }
        }
        else
        {
            if ($this->SingleTo === true && count($toArr) > 1)
            {
                foreach ($toArr as $key => $val)
                {
                    $rt = @mail($val, $this->EncodeHeader($this->SecureHeader($this->Subject)), $body, $header, $params);
                }
            }
            else
            {
                $rt = @mail($to, $this->EncodeHeader($this->SecureHeader($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 public
     * @return bool
     */
    public 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 public
     * @return bool
     */
    public 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)
        {
            $hostinfo = array();
            if (eregi('^(.+):([0-9]+)$', $hosts[$index], $hostinfo))
            {
                $host = $hostinfo[1];
                $port = $hostinfo[2];
            }
            else
            {
                $host = $hosts[$index];
                $port = $this->Port;
            }
            
            $tls = ($this->SMTPSecure == 'tls');
            $ssl = ($this->SMTPSecure == 'ssl');
            
            if ($this->smtp->Connect(($ssl ? 'ssl://' : '') . $host, $port, $this->Timeout))
            {
                
                $hello = ($this->Helo != '' ? $this->Helo : $this->ServerHostname());
                $this->smtp->Hello($hello);
                
                if ($tls)
                {
                    if (! $this->smtp->StartTLS())
                    {
                        $this->SetError($this->Lang("tls"));
                        $this->smtp->Reset();
                        $connection = false;
                    }
                    
                    //We must resend HELLO after tls negociation
                    $this->smtp->Hello($hello);
                }
                
                $connection = true;
                if ($this->SMTPAuth)
                {
                    if (! $this->smtp->Authenticate($this->Username, $this->Password))
                    {
                        $this->SetError($this->Lang('authenticate'));
                        $this->smtp->Reset();
                        $connection = false;
                    }
                }
            }
            $index ++;
        }
        if (! $connection)
        {
            $this->SetError($this->Lang('connect_host'));
        }
        
        return $connection;
    }

    /**
     * Closes the active SMTP session if one exists.
     * @return void
     */
    public 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 = 'en', $lang_path = 'language/')
    {
        if (! (@include $lang_path . 'phpmailer.lang-' . $lang_type . '.php'))
        {
            $PHPMAILER_LANG = array();
            $PHPMAILER_LANG["provide_address"] = 'You must provide at least one ' . $PHPMAILER_LANG["mailer_not_supported"] = ' mailer is not supported.';
            $PHPMAILER_LANG["execute"] = 'Could not execute: ';
            $PHPMAILER_LANG["instantiate"] = 'Could not instantiate mail function.';
            $PHPMAILER_LANG["authenticate"] = 'SMTP Error: Could not authenticate.';
            $PHPMAILER_LANG["from_failed"] = 'The following From address failed: ';
            $PHPMAILER_LANG["recipients_failed"] = 'SMTP Error: The following ' . $PHPMAILER_LANG["data_not_accepted"] = 'SMTP Error: Data not accepted.';
            $PHPMAILER_LANG["connect_host"] = 'SMTP Error: Could not connect to SMTP host.';
            $PHPMAILER_LANG["file_access"] = 'Could not access file: ';
            $PHPMAILER_LANG["file_open"] = 'File Error: Could not open file: ';
            $PHPMAILER_LANG["encoding"] = 'Unknown encoding: ';
            $PHPMAILER_LANG["signing"] = 'Signing Error: ';
        }
        $this->language = $PHPMAILER_LANG;
        return true;
    }

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

    /**
     * Creates recipient headers.
     * @access public
     * @return string
     */
    public 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 public
     * @return string
     */
    public function AddrFormat($addr)
    {
        if (empty($addr[1]))
        {
            $formatted = $this->SecureHeader($addr[0]);
        }
        else
        {
            $formatted = $this->EncodeHeader($this->SecureHeader($addr[1]), 'phrase') . " <" . $this->SecureHeader($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 public
     * @return string
     */
    public function WrapText($message, $length, $qp_mode = false)
    {
        $soft_break = ($qp_mode) ? sprintf(" =%s", $this->LE) : $this->LE;
        // If utf-8 encoding is used, we will need to make sure we don't
        // split multibyte characters when we wrap
        $is_utf8 = (strtolower($this->CharSet) == "utf-8");
        
        $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 = $space_left;
                            if ($is_utf8)
                            {
                                $len = $this->UTF8CharBoundary($word, $len);
                            }
                            elseif (substr($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 = $length;
                        if ($is_utf8)
                        {
                            $len = $this->UTF8CharBoundary($word, $len);
                        }
                        elseif (substr($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;
    }

    /**
     * Finds last character boundary prior to maxLength in a utf-8
     * quoted (printable) encoded string.
     * Original written by Colin Brown.
     * @access public
     * @param string $encodedText utf-8 QP text
     * @param int    $maxLength   find last character boundary prior to this length
     * @return int
     */
    public function UTF8CharBoundary($encodedText, $maxLength)
    {
        $foundSplitPos = false;
        $lookBack = 3;
        while (! $foundSplitPos)
        {
            $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);
            $encodedCharPos = strpos($lastChunk, "=");
            if ($encodedCharPos !== false)
            {
                // Found start of encoded character byte within $lookBack block.
                // Check the encoded byte value (the 2 chars after the '=')
                $hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2);
                $dec = hexdec($hex);
                if ($dec < 128)
                { // Single byte character.
                    // If the encoded char was found at pos 0, it will fit
                    // otherwise reduce maxLength to start of the encoded char
                    $maxLength = ($encodedCharPos == 0) ? $maxLength : $maxLength - ($lookBack - $encodedCharPos);
                    $foundSplitPos = true;
                }
                elseif ($dec >= 192)
                { // First byte of a multi byte character
                    // Reduce maxLength to split at start of character
                    $maxLength = $maxLength - ($lookBack - $encodedCharPos);
                    $foundSplitPos = true;
                }
                elseif ($dec < 192)
                { // Middle byte of a multi byte character, look further back
                    $lookBack += 3;
                }
            }
            else
            {
                // No encoded character found
                $foundSplitPos = true;
            }
        }
        return $maxLength;
    }

    /**
     * Set the body wrapping.
     * @access public
     * @return void
     */
    public 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 public
     * @return string
     */
    public 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', $this->to);
            }
            elseif (count($this->cc) == 0)
            {
                $result .= $this->HeaderLine('To', 'undisclosed-recipients:;');
            }
        }
        
        $from = array();
        $from[0][0] = trim($this->From);
        $from[0][1] = $this->FromName;
        $result .= $this->AddrAppend('From', $from);
        
        /* sendmail and mail() extract Cc from the header before sending */
        if ((($this->Mailer == 'sendmail') || ($this->Mailer == 'mail')) && (count($this->cc) > 0))
        {
            $result .= $this->AddrAppend('Cc', $this->cc);
        }
        
        /* 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', $this->EncodeHeader($this->SecureHeader($this->Subject)));
        }
        
        if ($this->MessageID != '')
        {
            $result .= $this->HeaderLine('Message-ID', $this->MessageID);
        }
        else
        {
            $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 (phpmailer.codeworxtech.com) [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])));
        }
        if (! $this->sign_key_file)
        {
            $result .= $this->HeaderLine('MIME-Version', '1.0');
            $result .= $this->GetMailMIME();
        }
        
        return $result;
    }

    /**
     * Returns the message MIME.
     * @access public
     * @return string
     */
    public function GetMailMIME()
    {
        $result = '';
        switch ($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 public
     * @return string
     */
    public function CreateBody()
    {
        $result = '';
        
        if ($this->sign_key_file)
        {
            $result .= $this->GetMailMIME();
        }
        
        $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);
                $result .= $this->GetBoundary($this->boundary[2], '', 'text/plain', '') . $this->LE; // Create text body
                $result .= $this->EncodeString($this->AltBody, $this->Encoding);
                $result .= $this->LE . $this->LE;
                $result .= $this->GetBoundary($this->boundary[2], '', 'text/html', '') . $this->LE; // Create the HTML body
                $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())
        {
            $result = '';
        }
        else 
            if ($this->sign_key_file)
            {
                $file = tempnam("", "mail");
                $fp = fopen($file, "w");
                fwrite($fp, $result);
                fclose($fp);
                $signed = tempnam("", "signed");
                
                if (@openssl_pkcs7_sign($file, $signed, "file://" . $this->sign_cert_file, array(
                        "file://" . $this->sign_key_file, $this->sign_key_pass), null))
                {
                    $fp = fopen($signed, "r");
                    $result = '';
                    while (! feof($fp))
                    {
                        $result = $result . fread($fp, 1024);
                    }
                    fclose($fp);
                }
                else
                {
                    $this->SetError($this->Lang("signing") . openssl_error_string());
                    $result = '';
                }
                
                unlink($file);
                unlink($signed);
            }
        
        return $result;
    }

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

    /**
     * Sets the message type.
     * @access public
     * @return void
     */
    public 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 public
   * @return string
   */
    public function HeaderLine($name, $value)
    {
        return $name . ': ' . $value . $this->LE;
    }

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

    /////////////////////////////////////////////////
    // CLASS METHODS, ATTACHMENTS
    /////////////////////////////////////////////////
    

    /**
     * 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 $type File extension (MIME) type.
     * @return bool
     */
    public function AddAttachment($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 public
     * @return string
     */
    public 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-Type: %s; name=\"%s\"%s", $type, $this->EncodeHeader($this->SecureHeader($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);
            $mime[] = sprintf("Content-Disposition: %s; filename=\"%s\"%s", $disposition, $this->EncodeHeader($this->SecureHeader($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 public
     * @return string
     */
    public function EncodeFile($path, $encoding = 'base64')
    {
        if (! @$fd = fopen($path, 'rb'))
        {
            $this->SetError($this->Lang('file_open') . $path);
            return '';
        }
        if (function_exists('get_magic_quotes'))
        {

            function get_magic_quotes()
            {
                return false;
            }
        }
        if (PHP_VERSION < 6)
        {
            $magic_quotes = get_magic_quotes_runtime();
            set_magic_quotes_runtime(0);
        }
        $file_buffer = file_get_contents($path);
        $file_buffer = $this->EncodeString($file_buffer, $encoding);
        fclose($fd);
        if (PHP_VERSION < 6)
        {
            set_magic_quotes_runtime($magic_quotes);
        }
        return $file_buffer;
    }

    /**
     * Encodes string to requested format. Returns an
     * empty string on failure.
     * @access public
     * @return string
     */
    public function EncodeString($str, $encoding = 'base64')
    {
        $encoded = '';
        switch (strtolower($encoding))
        {
            case 'base64' :
                $encoded = chunk_split(base64_encode($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 public
     * @return string
     */
    public 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';
            if (function_exists('mb_strlen') && $this->HasMultiBytes($str))
            {
                // Use a custom function which correctly encodes and wraps long
                // multibyte strings without breaking lines within a character
                $encoded = $this->Base64EncodeWrapMB($str);
            }
            else
            {
                $encoded = base64_encode($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;
    }

    /**
     * Checks if a string contains multibyte characters.
     * @access public
     * @param string $str multi-byte text to wrap encode
     * @return bool
     */
    public function HasMultiBytes($str)
    {
        if (function_exists('mb_strlen'))
        {
            return (strlen($str) > mb_strlen($str, $this->CharSet));
        }
        else
        { // Assume no multibytes (we can't handle without mbstring functions anyway)
            return False;
        }
    }

    /**
     * Correctly encodes and wraps long multibyte strings for mail headers
     * without breaking lines within a character.
     * Adapted from a function by paravoid at http://uk.php.net/manual/en/function.mb-encode-mimeheader.php
     * @access public
     * @param string $str multi-byte text to wrap encode
     * @return string
     */
    public function Base64EncodeWrapMB($str)
    {
        $start = "=?" . $this->CharSet . "?B?";
        $end = "?=";
        $encoded = "";
        
        $mb_length = mb_strlen($str, $this->CharSet);
        // Each line must have length <= 75, including $start and $end
        $length = 75 - strlen($start) - strlen($end);
        // Average multi-byte ratio
        $ratio = $mb_length / strlen($str);
        // Base64 has a 4:3 ratio
        $offset = $avgLength = floor($length * $ratio * .75);
        
        for($i = 0; $i < $mb_length; $i += $offset)
        {
            $lookBack = 0;
            
            do
            {
                $offset = $avgLength - $lookBack;
                $chunk = mb_substr($str, $i, $offset, $this->CharSet);
                $chunk = base64_encode($chunk);
                $lookBack ++;
            }
            while (strlen($chunk) > $length);
            
            $encoded .= $chunk . $this->LE;
        }
        
        // Chomp the last linefeed
        $encoded = substr($encoded, 0, - strlen($this->LE));
        return $encoded;
    }

    /**
     * Encode string to quoted-printable.
     * @access public
     * @param string $string the text to encode
     * @param integer $line_max Number of chars allowed on a line before wrapping
     * @return string
     */
    public function EncodeQP($input = '', $line_max = 76, $space_conv = false)
    {
        $hex = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F');
        $lines = preg_split('/(?:\r\n|\r|\n)/', $input);
        $eol = "\r\n";
        $escape = '=';
        $output = '';
        while (list(, $line) = each($lines))
        {
            $linlen = strlen($line);
            $newline = '';
            for($i = 0; $i < $linlen; $i ++)
            {
                $c = substr($line, $i, 1);
                $dec = ord($c);
                if (($i == 0) && ($dec == 46))
                { // convert first point in the line into =2E
                    $c = '=2E';
                }
                if ($dec == 32)
                {
                    if ($i == ($linlen - 1))
                    { // convert space at eol only
                        $c = '=20';
                    }
                    else 
                        if ($space_conv)
                        {
                            $c = '=20';
                        }
                }
                elseif (($dec == 61) || ($dec < 32) || ($dec > 126))
                { // always encode "\t", which is *not* required
                    $h2 = floor($dec / 16);
                    $h1 = floor($dec % 16);
                    $c = $escape . $hex[$h2] . $hex[$h1];
                }
                if ((strlen($newline) + strlen($c)) >= $line_max)
                { // CRLF is not counted
                    $output .= $newline . $escape . $eol; //  soft line break; " =\r\n" is okay
                    $newline = '';
                    // check if newline first character will be point or not
                    if ($dec == 46)
                    {
                        $c = '=2E';
                    }
                }
                $newline .= $c;
            } // end of for
            $output .= $newline . $eol;
        } // end of while
        return $output;
    }

    /**
     * Encode string to q encoding.
     * @access public
     * @return string
     */
    public 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 $type File extension (MIME) type.
     * @return void
     */
    public function AddStringAttachment($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 $type File extension (MIME) type.
     * @return bool
     */
    public function AddEmbeddedImage($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;
        $this->attachment[$cur][6] = 'inline';
        $this->attachment[$cur][7] = $cid;
        
        return true;
    }

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

    /////////////////////////////////////////////////
    // CLASS METHODS, MESSAGE RESET
    /////////////////////////////////////////////////
    

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

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

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

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

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

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

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

    /////////////////////////////////////////////////
    // CLASS METHODS, MISCELLANEOUS
    /////////////////////////////////////////////////
    

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

    /**
     * Returns the proper RFC 822 formatted date.
     * @access private
     * @return string
     */
    private static function RFCDate()
    {
        $tz = date('Z');
        $tzs = ($tz < 0) ? '-' : '+';
        $tz = abs($tz);
        $tz = (int) ($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 server hostname or 'localhost.localdomain' if unknown.
     * @access private
     * @return string
     */
    private function ServerHostname()
    {
        if (! empty($this->Hostname))
        {
            $result = $this->Hostname;
        }
        elseif (isset($_SERVER['SERVER_NAME']))
        {
            $result = $_SERVER['SERVER_NAME'];
        }
        else
        {
            $result = "localhost.localdomain";
        }
        
        return $result;
    }

    /**
     * Returns a message in the appropriate language.
     * @access private
     * @return string
     */
    private 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.
     * @access public
     * @return bool
     */
    public function IsError()
    {
        return ($this->error_count > 0);
    }

    /**
     * Changes every end of line from CR or LF to CRLF.
     * @access private
     * @return string
     */
    private 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.
     * @access public
     * @return void
     */
    public function AddCustomHeader($custom_header)
    {
        $this->CustomHeader[] = explode(':', $custom_header, 2);
    }

    /**
     * Evaluates the message and returns modifications for inline images and backgrounds
     * @access public
     * @return $message
     */
    public function MsgHTML($message, $basedir = '')
    {
        preg_match_all("/(src|background)=\"(.*)\"/Ui", $message, $images);
        if (isset($images[2]))
        {
            foreach ($images[2] as $i => $url)
            {
                // do not change urls for absolute images (thanks to corvuscorax)
                if (! preg_match('/^[A-z][A-z]*:\/\//', $url))
                {
                    $filename = basename($url);
                    $directory = dirname($url);
                    ($directory == '.') ? $directory = '' : '';
                    $cid = 'cid:' . md5($filename);
                    $fileParts = split("\.", $filename);
                    $ext = $fileParts[1];
                    $mimeType = $this->_mime_types($ext);
                    if (strlen($basedir) > 1 && substr($basedir, - 1) != '/')
                    {
                        $basedir .= '/';
                    }
                    if (strlen($directory) > 1 && substr($directory, - 1) != '/')
                    {
                        $directory .= '/';
                    }
                    if ($this->AddEmbeddedImage($basedir . $directory . $filename, md5($filename), $filename, 'base64', $mimeType))
                    {
                        $message = preg_replace("/" . $images[1][$i] . "=\"" . preg_quote($url, '/') . "\"/Ui", $images[1][$i] . "=\"" . $cid . "\"", $message);
                    }
                }
            }
        }
        $this->IsHTML(true);
        $this->Body = $message;
        $textMsg = trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/s', '', $message)));
        if (! empty($textMsg) && empty($this->AltBody))
        {
            $this->AltBody = html_entity_decode($textMsg);
        }
        if (empty($this->AltBody))
        {
            $this->AltBody = 'To view this email message, open the email in with HTML compatibility!' . "\n\n";
        }
    }

    /**
     * Gets the mime type of the embedded or inline image
     * @access public
     * @return mime type of ext
     */
    public function _mime_types($ext = '')
    {
        $mimes = array('hqx' => 'application/mac-binhex40', 'cpt' => 'application/mac-compactpro', 
                'doc' => 'application/msword', 'bin' => 'application/macbinary', 'dms' => 'application/octet-stream', 
                'lha' => 'application/octet-stream', 'lzh' => 'application/octet-stream', 
                'exe' => 'application/octet-stream', 'class' => 'application/octet-stream', 
                'psd' => 'application/octet-stream', 'so' => 'application/octet-stream', 
                'sea' => 'application/octet-stream', 'dll' => 'application/octet-stream', 'oda' => 'application/oda', 
                'pdf' => 'application/pdf', 'ai' => 'application/postscript', 'eps' => 'application/postscript', 
                'ps' => 'application/postscript', 'smi' => 'application/smil', 'smil' => 'application/smil', 
                'mif' => 'application/vnd.mif', 'xls' => 'application/vnd.ms-excel', 
                'ppt' => 'application/vnd.ms-powerpoint', 'wbxml' => 'application/vnd.wap.wbxml', 
                'wmlc' => 'application/vnd.wap.wmlc', 'dcr' => 'application/x-director', 
                'dir' => 'application/x-director', 'dxr' => 'application/x-director', 'dvi' => 'application/x-dvi', 
                'gtar' => 'application/x-gtar', 'php' => 'application/x-httpd-php', 
                'php4' => 'application/x-httpd-php', 'php3' => 'application/x-httpd-php', 
                'phtml' => 'application/x-httpd-php', 'phps' => 'application/x-httpd-php-source', 
                'js' => 'application/x-javascript', 'swf' => 'application/x-shockwave-flash', 
                'sit' => 'application/x-stuffit', 'tar' => 'application/x-tar', 'tgz' => 'application/x-tar', 
                'xhtml' => 'application/xhtml+xml', 'xht' => 'application/xhtml+xml', 'zip' => 'application/zip', 
                'mid' => 'audio/midi', 'midi' => 'audio/midi', 'mpga' => 'audio/mpeg', 'mp2' => 'audio/mpeg', 
                'mp3' => 'audio/mpeg', 'aif' => 'audio/x-aiff', 'aiff' => 'audio/x-aiff', 'aifc' => 'audio/x-aiff', 
                'ram' => 'audio/x-pn-realaudio', 'rm' => 'audio/x-pn-realaudio', 
                'rpm' => 'audio/x-pn-realaudio-plugin', 'ra' => 'audio/x-realaudio', 
                'rv' => 'video/vnd.rn-realvideo', 'wav' => 'audio/x-wav', 'bmp' => 'image/bmp', 'gif' => 'image/gif', 
                'jpeg' => 'image/jpeg', 'jpg' => 'image/jpeg', 'jpe' => 'image/jpeg', 'png' => 'image/png', 
                'tiff' => 'image/tiff', 'tif' => 'image/tiff', 'css' => 'text/css', 'html' => 'text/html', 
                'htm' => 'text/html', 'shtml' => 'text/html', 'txt' => 'text/plain', 'text' => 'text/plain', 
                'log' => 'text/plain', 'rtx' => 'text/richtext', 'rtf' => 'text/rtf', 'xml' => 'text/xml', 
                'xsl' => 'text/xml', 'mpeg' => 'video/mpeg', 'mpg' => 'video/mpeg', 'mpe' => 'video/mpeg', 
                'qt' => 'video/quicktime', 'mov' => 'video/quicktime', 'avi' => 'video/x-msvideo', 
                'movie' => 'video/x-sgi-movie', 'doc' => 'application/msword', 'word' => 'application/msword', 
                'xl' => 'application/excel', 'eml' => 'message/rfc822');
        return (! isset($mimes[strtolower($ext)])) ? 'application/octet-stream' : $mimes[strtolower($ext)];
    }

    /**
     * Set (or reset) Class Objects (variables)
     *
     * Usage Example:
     * $page->set('X-Priority', '3');
     *
     * @access public
     * @param string $name Parameter Name
     * @param mixed $value Parameter Value
     * NOTE: will not work with arrays, there are no arrays to set/reset
     */
    public function set($name, $value = '')
    {
        if (isset($this->$name))
        {
            $this->$name = $value;
        }
        else
        {
            $this->SetError('Cannot set or reset variable ' . $name);
            return false;
        }
    }

    /**
     * Read a file from a supplied filename and return it.
     *
     * @access public
     * @param string $filename Parameter File Name
     */
    public function getFile($filename)
    {
        $return = '';
        if ($fp = fopen($filename, 'rb'))
        {
            while (! feof($fp))
            {
                $return .= fread($fp, 1024);
            }
            fclose($fp);
            return $return;
        }
        else
        {
            return false;
        }
    }

    /**
     * Strips newlines to prevent header injection.
     * @access public
     * @param string $str String
     * @return string
     */
    public function SecureHeader($str)
    {
        $str = trim($str);
        $str = str_replace("\r", "", $str);
        $str = str_replace("\n", "", $str);
        return $str;
    }

    /**
     * Set the private key file and password to sign the message.
     *
     * @access public
     * @param string $key_filename Parameter File Name
     * @param string $key_pass Password for private key
     */
    public function Sign($cert_filename, $key_filename, $key_pass)
    {
        $this->sign_cert_file = $cert_filename;
        $this->sign_key_file = $key_filename;
        $this->sign_key_pass = $key_pass;
    }
}

?>
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