<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package     CodeIgniter
 * @author      ExpressionEngine Dev Team
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license     http://codeigniter.com/user_guide/license.html
 * @link        http://codeigniter.com
 * @since       Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter Email Class
 *
 * Permits email to be sent using Mail, Sendmail, or SMTP.
 *
 * @package     CodeIgniter
 * @subpackage  Libraries
 * @category    Libraries
 * @author      ExpressionEngine Dev Team
 * @link        http://codeigniter.com/user_guide/libraries/email.html
 */
class CI_Email {

    var $useragent      = "RobotCMS";
    var $mailpath       = "/usr/sbin/sendmail"; // Sendmail path
    var $protocol       = "mail";   // mail/sendmail/smtp
    var $smtp_host      = "";       // SMTP Server.  Example: mail.earthlink.net
    var $smtp_user      = "";       // SMTP Username
    var $smtp_pass      = "";       // SMTP Password
    var $smtp_port      = "25";     // SMTP Port
    var $smtp_timeout   = 5;        // SMTP Timeout in seconds
    var $smtp_crypto    = "";       // SMTP Encryption. Can be null, tls or ssl.
    var $wordwrap       = TRUE;     // TRUE/FALSE  Turns word-wrap on/off
    var $wrapchars      = "76";     // Number of characters to wrap at.
    var $mailtype       = "text";   // text/html  Defines email formatting
    var $charset        = "utf-8";  // Default char set: iso-8859-1 or us-ascii
    var $multipart      = "mixed";  // "mixed" (in the body) or "related" (separate)
    var $alt_message    = '';       // Alternative message for HTML emails
    var $validate       = FALSE;    // TRUE/FALSE.  Enables email validation
    var $priority       = "3";      // Default priority (1 - 5)
    var $newline        = "\n";     // Default newline. "\r\n" or "\n" (Use "\r\n" to comply with RFC 822)
    var $crlf           = "\n";     // The RFC 2045 compliant CRLF for quoted-printable is "\r\n".  Apparently some servers,
                                    // even on the receiving end think they need to muck with CRLFs, so using "\n", while
                                    // distasteful, is the only thing that seems to work for all environments.
    var $send_multipart = TRUE;     // TRUE/FALSE - Yahoo does not like multipart alternative, so this is an override.  Set to FALSE for Yahoo.
    var $bcc_batch_mode = FALSE;    // TRUE/FALSE  Turns on/off Bcc batch feature
    var $bcc_batch_size = 200;      // If bcc_batch_mode = TRUE, sets max number of Bccs in each batch
    var $_safe_mode     = FALSE;
    var $_subject       = "";
    var $_body          = "";
    var $_finalbody     = "";
    var $_alt_boundary  = "";
    var $_atc_boundary  = "";
    var $_header_str    = "";
    var $_smtp_connect  = "";
    var $_encoding      = "8bit";
    var $_IP            = FALSE;
    var $_smtp_auth     = FALSE;
    var $_replyto_flag  = FALSE;
    var $_debug_msg     = array();
    var $_recipients    = array();
    var $_cc_array      = array();
    var $_bcc_array     = array();
    var $_headers       = array();
    var $_attach_name   = array();
    var $_attach_type   = array();
    var $_attach_disp   = array();
    var $_protocols     = array('mail', 'sendmail', 'smtp');
    var $_base_charsets = array('us-ascii', 'iso-2022-');   // 7-bit charsets (excluding language suffix)
    var $_bit_depths    = array('7bit', '8bit');
    var $_priorities    = array('1 (Highest)', '2 (High)', '3 (Normal)', '4 (Low)', '5 (Lowest)');


    /**
     * Constructor - Sets Email Preferences
     *
     * The constructor can be passed an array of config values
     */
    public function __construct($config = array())
    {
        if (count($config) > 0)
        {
            $this->initialize($config);
        }
        else
        {
            $this->_smtp_auth = ($this->smtp_user == '' AND $this->smtp_pass == '') ? FALSE : TRUE;
            $this->_safe_mode = ((boolean)@ini_get("safe_mode") === FALSE) ? FALSE : TRUE;
        }

        log_message('debug', "Email Class Initialized");
    }

    // --------------------------------------------------------------------

    /**
     * Initialize preferences
     *
     * @access  public
     * @param   array
     * @return  void
     */
    public function initialize($config = array())
    {
        foreach ($config as $key => $val)
        {
            if (isset($this->$key))
            {
                $method = 'set_'.$key;

                if (method_exists($this, $method))
                {
                    $this->$method($val);
                }
                else
                {
                    $this->$key = $val;
                }
            }
        }
        $this->clear();

        $this->_smtp_auth = ($this->smtp_user == '' AND $this->smtp_pass == '') ? FALSE : TRUE;
        $this->_safe_mode = ((boolean)@ini_get("safe_mode") === FALSE) ? FALSE : TRUE;

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Initialize the Email Data
     *
     * @access  public
     * @return  void
     */
    public function clear($clear_attachments = FALSE)
    {
        $this->_subject     = "";
        $this->_body        = "";
        $this->_finalbody   = "";
        $this->_header_str  = "";
        $this->_replyto_flag = FALSE;
        $this->_recipients  = array();
        $this->_cc_array    = array();
        $this->_bcc_array   = array();
        $this->_headers     = array();
        $this->_debug_msg   = array();

        $this->_set_header('User-Agent', $this->useragent);
        $this->_set_header('Date', $this->_set_date());

        if ($clear_attachments !== FALSE)
        {
            $this->_attach_name = array();
            $this->_attach_type = array();
            $this->_attach_disp = array();
        }

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set FROM
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  void
     */
    public function from($from, $name = '')
    {
        if (preg_match( '/\<(.*)\>/', $from, $match))
        {
            $from = $match['1'];
        }

        if ($this->validate)
        {
            $this->validate_email($this->_str_to_array($from));
        }

        // prepare the display name
        if ($name != '')
        {
            // only use Q encoding if there are characters that would require it
            if ( ! preg_match('/[\200-\377]/', $name))
            {
                // add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
                $name = '"'.addcslashes($name, "\0..\37\177'\"\\").'"';
            }
            else
            {
                $name = $this->_prep_q_encoding($name, TRUE);
            }
        }

        $this->_set_header('From', $name.' <'.$from.'>');
        $this->_set_header('Return-Path', '<'.$from.'>');

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Reply-to
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  void
     */
    public function reply_to($replyto, $name = '')
    {
        if (preg_match( '/\<(.*)\>/', $replyto, $match))
        {
            $replyto = $match['1'];
        }

        if ($this->validate)
        {
            $this->validate_email($this->_str_to_array($replyto));
        }

        if ($name == '')
        {
            $name = $replyto;
        }

        if (strncmp($name, '"', 1) != 0)
        {
            $name = '"'.$name.'"';
        }

        $this->_set_header('Reply-To', $name.' <'.$replyto.'>');
        $this->_replyto_flag = TRUE;

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Recipients
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function to($to)
    {
        $to = $this->_str_to_array($to);
        $to = $this->clean_email($to);

        if ($this->validate)
        {
            $this->validate_email($to);
        }

        if ($this->_get_protocol() != 'mail')
        {
            $this->_set_header('To', implode(", ", $to));
        }

        switch ($this->_get_protocol())
        {
            case 'smtp'     :
                $this->_recipients = $to;
            break;
            case 'sendmail' :
            case 'mail'     :
                $this->_recipients = implode(", ", $to);
            break;
        }

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set CC
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function cc($cc)
    {
        $cc = $this->_str_to_array($cc);
        $cc = $this->clean_email($cc);

        if ($this->validate)
        {
            $this->validate_email($cc);
        }

        $this->_set_header('Cc', implode(", ", $cc));

        if ($this->_get_protocol() == "smtp")
        {
            $this->_cc_array = $cc;
        }

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set BCC
     *
     * @access  public
     * @param   string
     * @param   string
     * @return  void
     */
    public function bcc($bcc, $limit = '')
    {
        if ($limit != '' && is_numeric($limit))
        {
            $this->bcc_batch_mode = TRUE;
            $this->bcc_batch_size = $limit;
        }

        $bcc = $this->_str_to_array($bcc);
        $bcc = $this->clean_email($bcc);

        if ($this->validate)
        {
            $this->validate_email($bcc);
        }

        if (($this->_get_protocol() == "smtp") OR ($this->bcc_batch_mode && count($bcc) > $this->bcc_batch_size))
        {
            $this->_bcc_array = $bcc;
        }
        else
        {
            $this->_set_header('Bcc', implode(", ", $bcc));
        }

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Email Subject
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function subject($subject)
    {
        $subject = $this->_prep_q_encoding($subject);
        $this->_set_header('Subject', $subject);
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Body
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function message($body)
    {
        $this->_body = rtrim(str_replace("\r", "", $body));

        /* strip slashes only if magic quotes is ON
           if we do it with magic quotes OFF, it strips real, user-inputted chars.

           NOTE: In PHP 5.4 get_magic_quotes_gpc() will always return 0 and
             it will probably not exist in future versions at all.
        */
        if ( ! is_php('5.4') && get_magic_quotes_gpc())
        {
            $this->_body = stripslashes($this->_body);
        }

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Assign file attachments
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function attach($filename, $disposition = 'attachment')
    {
        $this->_attach_name[] = $filename;
        $this->_attach_type[] = $this->_mime_types(pathinfo($filename, PATHINFO_EXTENSION));
        $this->_attach_disp[] = $disposition; // Can also be 'inline'  Not sure if it matters
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Add a Header Item
     *
     * @access  protected
     * @param   string
     * @param   string
     * @return  void
     */
    protected function _set_header($header, $value)
    {
        $this->_headers[$header] = $value;
    }

    // --------------------------------------------------------------------

    /**
     * Convert a String to an Array
     *
     * @access  protected
     * @param   string
     * @return  array
     */
    protected function _str_to_array($email)
    {
        if ( ! is_array($email))
        {
            if (strpos($email, ',') !== FALSE)
            {
                $email = preg_split('/[\s,]/', $email, -1, PREG_SPLIT_NO_EMPTY);
            }
            else
            {
                $email = trim($email);
                settype($email, "array");
            }
        }
        return $email;
    }

    // --------------------------------------------------------------------

    /**
     * Set Multipart Value
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function set_alt_message($str = '')
    {
        $this->alt_message = $str;
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Mailtype
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function set_mailtype($type = 'text')
    {
        $this->mailtype = ($type == 'html') ? 'html' : 'text';
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Wordwrap
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function set_wordwrap($wordwrap = TRUE)
    {
        $this->wordwrap = ($wordwrap === FALSE) ? FALSE : TRUE;
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Protocol
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function set_protocol($protocol = 'mail')
    {
        $this->protocol = ( ! in_array($protocol, $this->_protocols, TRUE)) ? 'mail' : strtolower($protocol);
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Priority
     *
     * @access  public
     * @param   integer
     * @return  void
     */
    public function set_priority($n = 3)
    {
        if ( ! is_numeric($n))
        {
            $this->priority = 3;
            return;
        }

        if ($n < 1 OR $n > 5)
        {
            $this->priority = 3;
            return;
        }

        $this->priority = $n;
        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Newline Character
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function set_newline($newline = "\n")
    {
        if ($newline != "\n" AND $newline != "\r\n" AND $newline != "\r")
        {
            $this->newline  = "\n";
            return;
        }

        $this->newline  = $newline;

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set CRLF
     *
     * @access  public
     * @param   string
     * @return  void
     */
    public function set_crlf($crlf = "\n")
    {
        if ($crlf != "\n" AND $crlf != "\r\n" AND $crlf != "\r")
        {
            $this->crlf = "\n";
            return;
        }

        $this->crlf = $crlf;

        return $this;
    }

    // --------------------------------------------------------------------

    /**
     * Set Message Boundary
     *
     * @access  protected
     * @return  void
     */
    protected function _set_boundaries()
    {
        $this->_alt_boundary = "B_ALT_".uniqid(''); // multipart/alternative
        $this->_atc_boundary = "B_ATC_".uniqid(''); // attachment boundary
    }

    // --------------------------------------------------------------------

    /**
     * Get the Message ID
     *
     * @access  protected
     * @return  string
     */
    protected function _get_message_id()
    {
        $from = $this->_headers['Return-Path'];
        $from = str_replace(">", "", $from);
        $from = str_replace("<", "", $from);

        return  "<".uniqid('').strstr($from, '@').">";
    }

    // --------------------------------------------------------------------

    /**
     * Get Mail Protocol
     *
     * @access  protected
     * @param   bool
     * @return  string
     */
    protected function _get_protocol($return = TRUE)
    {
        $this->protocol = strtolower($this->protocol);
        $this->protocol = ( ! in_array($this->protocol, $this->_protocols, TRUE)) ? 'mail' : $this->protocol;

        if ($return == TRUE)
        {
            return $this->protocol;
        }
    }

    // --------------------------------------------------------------------

    /**
     * Get Mail Encoding
     *
     * @access  protected
     * @param   bool
     * @return  string
     */
    protected function _get_encoding($return = TRUE)
    {
        $this->_encoding = ( ! in_array($this->_encoding, $this->_bit_depths)) ? '8bit' : $this->_encoding;

        foreach ($this->_base_charsets as $charset)
        {
            if (strncmp($charset, $this->charset, strlen($charset)) == 0)
            {
                $this->_encoding = '7bit';
            }
        }

        if ($return == TRUE)
        {
            return $this->_encoding;
        }
    }

    // --------------------------------------------------------------------

    /**
     * Get content type (text/html/attachment)
     *
     * @access  protected
     * @return  string
     */
    protected function _get_content_type()
    {
        if  ($this->mailtype == 'html' &&  count($this->_attach_name) == 0)
        {
            return 'html';
        }
        elseif  ($this->mailtype == 'html' &&  count($this->_attach_name)  > 0)
        {
            return 'html-attach';
        }
        elseif  ($this->mailtype == 'text' &&  count($this->_attach_name)  > 0)
        {
            return 'plain-attach';
        }
        else
        {
            return 'plain';
        }
    }

    // --------------------------------------------------------------------

    /**
     * Set RFC 822 Date
     *
     * @access  protected
     * @return  string
     */
    protected function _set_date()
    {
        $timezone = date("Z");
        $operator = (strncmp($timezone, '-', 1) == 0) ? '-' : '+';
        $timezone = abs($timezone);
        $timezone = floor($timezone/3600) * 100 + ($timezone % 3600 ) / 60;

        return sprintf("%s %s%04d", date("D, j M Y H:i:s"), $operator, $timezone);
    }

    // --------------------------------------------------------------------

    /**
     * Mime message
     *
     * @access  protected
     * @return  string
     */
    protected function _get_mime_message()
    {
        return "This is a multi-part message in MIME format.".$this->newline."Your email application may not support this format.";
    }

    // --------------------------------------------------------------------

    /**
     * Validate Email Address
     *
     * @access  public
     * @param   string
     * @return  bool
     */
    public function validate_email($email)
    {
        if ( ! is_array($email))
        {
            $this->_set_error_message('lang:email_must_be_array');
            return FALSE;
        }

        foreach ($email as $val)
        {
            if ( ! $this->valid_email($val))
            {
                $this->_set_error_message('lang:email_invalid_address', $val);
                return FALSE;
            }
        }

        return TRUE;
    }

    // --------------------------------------------------------------------

    /**
     * Email Validation
     *
     * @access  public
     * @param   string
     * @return  bool
     */
    public function valid_email($address)
    {
        return ( ! preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $address)) ? FALSE : TRUE;
    }

    // --------------------------------------------------------------------

    /**
     * Clean Extended Email Address: Joe Smith <[email protected]>
     *
     * @access  public
     * @param   string
     * @return  string
     */
    public function clean_email($email)
    {
        if ( ! is_array($email))
        {
            if (preg_match('/\<(.*)\>/', $email, $match))
            {
                return $match['1'];
            }
            else
            {
                return $email;
            }
        }

        $clean_email = array();

        foreach ($email as $addy)
        {
            if (preg_match( '/\<(.*)\>/', $addy, $match))
            {
                $clean_email[] = $match['1'];
            }
            else
            {
                $clean_email[] = $addy;
            }
        }

        return $clean_email;
    }

    // --------------------------------------------------------------------

    /**
     * Build alternative plain text message
     *
     * This public function provides the raw message for use
     * in plain-text headers of HTML-formatted emails.
     * If the user hasn't specified his own alternative message
     * it creates one by stripping the HTML
     *
     * @access  protected
     * @return  string
     */
    protected function _get_alt_message()
    {
        if ($this->alt_message != "")
        {
            return $this->word_wrap($this->alt_message, '76');
        }

        if (preg_match('/\<body.*?\>(.*)\<\/body\>/si', $this->_body, $match))
        {
            $body = $match['1'];
        }
        else
        {
            $body = $this->_body;
        }

        $body = trim(strip_tags($body));
        $body = preg_replace( '#<!--(.*)--\>#', "", $body);
        $body = str_replace("\t", "", $body);

        for ($i = 20; $i >= 3; $i--)
        {
            $n = "";

            for ($x = 1; $x <= $i; $x ++)
            {
                $n .= "\n";
            }

            $body = str_replace($n, "\n\n", $body);
        }

        return $this->word_wrap($body, '76');
    }

    // --------------------------------------------------------------------

    /**
     * Word Wrap
     *
     * @access  public
     * @param   string
     * @param   integer
     * @return  string
     */
    public function word_wrap($str, $charlim = '')
    {
        // Se the character limit
        if ($charlim == '')
        {
            $charlim = ($this->wrapchars == "") ? "76" : $this->wrapchars;
        }

        // Reduce multiple spaces
        $str = preg_replace("| +|", " ", $str);

        // Standardize newlines
        if (strpos($str, "\r") !== FALSE)
        {
            $str = str_replace(array("\r\n", "\r"), "\n", $str);
        }

        // If the current word is surrounded by {unwrap} tags we'll
        // strip the entire chunk and replace it with a marker.
        $unwrap = array();
        if (preg_match_all("|(\{unwrap\}.+?\{/unwrap\})|s", $str, $matches))
        {
            for ($i = 0; $i < count($matches['0']); $i++)
            {
                $unwrap[] = $matches['1'][$i];
                $str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str);
            }
        }

        // Use PHP's native public function to do the initial wordwrap.
        // We set the cut flag to FALSE so that any individual words that are
        // too long get left alone.  In the next step we'll deal with them.
        $str = wordwrap($str, $charlim, "\n", FALSE);

        // Split the string into individual lines of text and cycle through them
        $output = "";
        foreach (explode("\n", $str) as $line)
        {
            // Is the line within the allowed character count?
            // If so we'll join it to the output and continue
            if (strlen($line) <= $charlim)
            {
                $output .= $line.$this->newline;
                continue;
            }

            $temp = '';
            while ((strlen($line)) > $charlim)
            {
                // If the over-length word is a URL we won't wrap it
                if (preg_match("!\[url.+\]|://|wwww.!", $line))
                {
                    break;
                }

                // Trim the word down
                $temp .= substr($line, 0, $charlim-1);
                $line = substr($line, $charlim-1);
            }

            // If $temp contains data it means we had to split up an over-length
            // word into smaller chunks so we'll add it back to our current line
            if ($temp != '')
            {
                $output .= $temp.$this->newline.$line;
            }
            else
            {
                $output .= $line;
            }

            $output .= $this->newline;
        }

        // Put our markers back
        if (count($unwrap) > 0)
        {
            foreach ($unwrap as $key => $val)
            {
                $output = str_replace("{{unwrapped".$key."}}", $val, $output);
            }
        }

        return $output;
    }

    // --------------------------------------------------------------------

    /**
     * Build final headers
     *
     * @access  protected
     * @param   string
     * @return  string
     */
    protected function _build_headers()
    {
        $this->_set_header('X-Sender', $this->clean_email($this->_headers['From']));
        $this->_set_header('X-Mailer', $this->useragent);
        $this->_set_header('X-Priority', $this->_priorities[$this->priority - 1]);
        $this->_set_header('Message-ID', $this->_get_message_id());
        $this->_set_header('Mime-Version', '1.0');
    }

    // --------------------------------------------------------------------

    /**
     * Write Headers as a string
     *
     * @access  protected
     * @return  void
     */
    protected function _write_headers()
    {
        if ($this->protocol == 'mail')
        {
            $this->_subject = $this->_headers['Subject'];
            unset($this->_headers['Subject']);
        }

        reset($this->_headers);
        $this->_header_str = "";

        foreach ($this->_headers as $key => $val)
        {
            $val = trim($val);

            if ($val != "")
            {
                $this->_header_str .= $key.": ".$val.$this->newline;
            }
        }

        if ($this->_get_protocol() == 'mail')
        {
            $this->_header_str = rtrim($this->_header_str);
        }
    }

    // --------------------------------------------------------------------

    /**
     * Build Final Body and attachments
     *
     * @access  protected
     * @return  void
     */
    protected function _build_message()
    {
        if ($this->wordwrap === TRUE  AND  $this->mailtype != 'html')
        {
            $this->_body = $this->word_wrap($this->_body);
        }

        $this->_set_boundaries();
        $this->_write_headers();

        $hdr = ($this->_get_protocol() == 'mail') ? $this->newline : '';
        $body = '';

        switch ($this->_get_content_type())
        {
            case 'plain' :

                $hdr .= "Content-Type: text/plain; charset=" . $this->charset . $this->newline;
                $hdr .= "Content-Transfer-Encoding: " . $this->_get_encoding();

                if ($this->_get_protocol() == 'mail')
                {
                    $this->_header_str .= $hdr;
                    $this->_finalbody = $this->_body;
                }
                else
                {
                    $this->_finalbody = $hdr . $this->newline . $this->newline . $this->_body;
                }

                return;

            break;
            case 'html' :

                if ($this->send_multipart === FALSE)
                {
                    $hdr .= "Content-Type: text/html; charset=" . $this->charset . $this->newline;
                    $hdr .= "Content-Transfer-Encoding: quoted-printable";
                }
                else
                {
                    $hdr .= "Content-Type: multipart/alternative; boundary=\"" . $this->_alt_boundary . "\"" . $this->newline . $this->newline;

                    $body .= $this->_get_mime_message() . $this->newline . $this->newline;
                    $body .= "--" . $this->_alt_boundary . $this->newline;

                    $body .= "Content-Type: text/plain; charset=" . $this->charset . $this->newline;
                    $body .= "Content-Transfer-Encoding: " . $this->_get_encoding() . $this->newline . $this->newline;
                    $body .= $this->_get_alt_message() . $this->newline . $this->newline . "--" . $this->_alt_boundary . $this->newline;

                    $body .= "Content-Type: text/html; charset=" . $this->charset . $this->newline;
                    $body .= "Content-Transfer-Encoding: quoted-printable" . $this->newline . $this->newline;
                }

                $this->_finalbody = $body . $this->_prep_quoted_printable($this->_body) . $this->newline . $this->newline;


                if ($this->_get_protocol() == 'mail')
                {
                    $this->_header_str .= $hdr;
                }
                else
                {
                    $this->_finalbody = $hdr . $this->_finalbody;
                }


                if ($this->send_multipart !== FALSE)
                {
                    $this->_finalbody .= "--" . $this->_alt_boundary . "--";
                }

                return;

            break;
            case 'plain-attach' :

                $hdr .= "Content-Type: multipart/".$this->multipart."; boundary=\"" . $this->_atc_boundary."\"" . $this->newline . $this->newline;

                if ($this->_get_protocol() == 'mail')
                {
                    $this->_header_str .= $hdr;
                }

                $body .= $this->_get_mime_message() . $this->newline . $this->newline;
                $body .= "--" . $this->_atc_boundary . $this->newline;

                $body .= "Content-Type: text/plain; charset=" . $this->charset . $this->newline;
                $body .= "Content-Transfer-Encoding: " . $this->_get_encoding() . $this->newline . $this->newline;

                $body .= $this->_body . $this->newline . $this->newline;

            break;
            case 'html-attach' :

                $hdr .= "Content-Type: multipart/".$this->multipart."; boundary=\"" . $this->_atc_boundary."\"" . $this->newline . $this->newline;

                if ($this->_get_protocol() == 'mail')
                {
                    $this->_header_str .= $hdr;
                }

                $body .= $this->_get_mime_message() . $this->newline . $this->newline;
                $body .= "--" . $this->_atc_boundary . $this->newline;

                $body .= "Content-Type: multipart/alternative; boundary=\"" . $this->_alt_boundary . "\"" . $this->newline .$this->newline;
                $body .= "--" . $this->_alt_boundary . $this->newline;

                $body .= "Content-Type: text/plain; charset=" . $this->charset . $this->newline;
                $body .= "Content-Transfer-Encoding: " . $this->_get_encoding() . $this->newline . $this->newline;
                $body .= $this->_get_alt_message() . $this->newline . $this->newline . "--" . $this->_alt_boundary . $this->newline;

                $body .= "Content-Type: text/html; charset=" . $this->charset . $this->newline;
                $body .= "Content-Transfer-Encoding: quoted-printable" . $this->newline . $this->newline;

                $body .= $this->_prep_quoted_printable($this->_body) . $this->newline . $this->newline;
                $body .= "--" . $this->_alt_boundary . "--" . $this->newline . $this->newline;

            break;
        }

        $attachment = array();

        $z = 0;

        for ($i=0; $i < count($this->_attach_name); $i++)
        {
            $filename = $this->_attach_name[$i];
            $basename = basename($filename);
            $ctype = $this->_attach_type[$i];

            if ( ! file_exists($filename))
            {
                $this->_set_error_message('lang:email_attachment_missing', $filename);
                return FALSE;
            }

            $h  = "--".$this->_atc_boundary.$this->newline;
            $h .= "Content-type: ".$ctype."; ";
            $h .= "name=\"".$basename."\"".$this->newline;
            $h .= "Content-Disposition: ".$this->_attach_disp[$i].";".$this->newline;
            $h .= "Content-Transfer-Encoding: base64".$this->newline;

            $attachment[$z++] = $h;
            $file = filesize($filename) +1;

            if ( ! $fp = fopen($filename, FOPEN_READ))
            {
                $this->_set_error_message('lang:email_attachment_unreadable', $filename);
                return FALSE;
            }

            $attachment[$z++] = chunk_split(base64_encode(fread($fp, $file)));
            fclose($fp);
        }

        $body .= implode($this->newline, $attachment).$this->newline."--".$this->_atc_boundary."--";


        if ($this->_get_protocol() == 'mail')
        {
            $this->_finalbody = $body;
        }
        else
        {
            $this->_finalbody = $hdr . $body;
        }

        return;
    }

    // --------------------------------------------------------------------

    /**
     * Prep Quoted Printable
     *
     * Prepares string for Quoted-Printable Content-Transfer-Encoding
     * Refer to RFC 2045 http://www.ietf.org/rfc/rfc2045.txt
     *
     * @access  protected
     * @param   string
     * @param   integer
     * @return  string
     */
    protected function _prep_quoted_printable($str, $charlim = '')
    {
        // Set the character limit
        // Don't allow over 76, as that will make servers and MUAs barf
        // all over quoted-printable data
        if ($charlim == '' OR $charlim > '76')
        {
            $charlim = '76';
        }

        // Reduce multiple spaces
        $str = preg_replace("| +|", " ", $str);

        // kill nulls
        $str = preg_replace('/\x00+/', '', $str);

        // Standardize newlines
        if (strpos($str, "\r") !== FALSE)
        {
            $str = str_replace(array("\r\n", "\r"), "\n", $str);
        }

        // We are intentionally wrapping so mail servers will encode characters
        // properly and MUAs will behave, so {unwrap} must go!
        $str = str_replace(array('{unwrap}', '{/unwrap}'), '', $str);

        // Break into an array of lines
        $lines = explode("\n", $str);

        $escape = '=';
        $output = '';

        foreach ($lines as $line)
        {
            $length = strlen($line);
            $temp = '';

            // Loop through each character in the line to add soft-wrap
            // characters at the end of a line " =\r\n" and add the newly
            // processed line(s) to the output (see comment on $crlf class property)
            for ($i = 0; $i < $length; $i++)
            {
                // Grab the next character
                $char = substr($line, $i, 1);
                $ascii = ord($char);

                // Convert spaces and tabs but only if it's the end of the line
                if ($i == ($length - 1))
                {
                    $char = ($ascii == '32' OR $ascii == '9') ? $escape.sprintf('%02s', dechex($ascii)) : $char;
                }

                // encode = signs
                if ($ascii == '61')
                {
                    $char = $escape.strtoupper(sprintf('%02s', dechex($ascii)));  // =3D
                }

                // If we're at the character limit, add the line to the output,
                // reset our temp variable, and keep on chuggin'
                if ((strlen($temp) + strlen($char)) >= $charlim)
                {
                    $output .= $temp.$escape.$this->crlf;
                    $temp = '';
                }

                // Add the character to our temporary line
                $temp .= $char;
            }

            // Add our completed line to the output
            $output .= $temp.$this->crlf;
        }

        // get rid of extra CRLF tacked onto the end
        $output = substr($output, 0, strlen($this->crlf) * -1);

        return $output;
    }

    // --------------------------------------------------------------------

    /**
     * Prep Q Encoding
     *
     * Performs "Q Encoding" on a string for use in email headers.  It's related
     * but not identical to quoted-printable, so it has its own method
     *
     * @access  public
     * @param   str
     * @param   bool    // set to TRUE for processing From: headers
     * @return  str
     */
    protected function _prep_q_encoding($str, $from = FALSE)
    {
        $str = str_replace(array("\r", "\n"), array('', ''), $str);

        // Line length must not exceed 76 characters, so we adjust for
        // a space, 7 extra characters =??Q??=, and the charset that we will add to each line
        $limit = 75 - 7 - strlen($this->charset);

        // these special characters must be converted too
        $convert = array('_', '=', '?');

        if ($from === TRUE)
        {
            $convert[] = ',';
            $convert[] = ';';
        }

        $output = '';
        $temp = '';

        for ($i = 0, $length = strlen($str); $i < $length; $i++)
        {
            // Grab the next character
            $char = substr($str, $i, 1);
            $ascii = ord($char);

            // convert ALL non-printable ASCII characters and our specials
            if ($ascii < 32 OR $ascii > 126 OR in_array($char, $convert))
            {
                $char = '='.dechex($ascii);
            }

            // handle regular spaces a bit more compactly than =20
            if ($ascii == 32)
            {
                $char = '_';
            }

            // If we're at the character limit, add the line to the output,
            // reset our temp variable, and keep on chuggin'
            if ((strlen($temp) + strlen($char)) >= $limit)
            {
                $output .= $temp.$this->crlf;
                $temp = '';
            }

            // Add the character to our temporary line
            $temp .= $char;
        }

        $str = $output.$temp;

        // wrap each line with the shebang, charset, and transfer encoding
        // the preceding space on successive lines is required for header "folding"
        $str = trim(preg_replace('/^(.*)$/m', ' =?'.$this->charset.'?Q?$1?=', $str));

        return $str;
    }

    // --------------------------------------------------------------------

    /**
     * Send Email
     *
     * @access  public
     * @return  bool
     */
    public function send()
    {
        if ($this->_replyto_flag == FALSE)
        {
            $this->reply_to($this->_headers['From']);
        }

        if (( ! isset($this->_recipients) AND ! isset($this->_headers['To']))  AND
            ( ! isset($this->_bcc_array) AND ! isset($this->_headers['Bcc'])) AND
            ( ! isset($this->_headers['Cc'])))
        {
            $this->_set_error_message('lang:email_no_recipients');
            return FALSE;
        }

        $this->_build_headers();

        if ($this->bcc_batch_mode  AND  count($this->_bcc_array) > 0)
        {
            if (count($this->_bcc_array) > $this->bcc_batch_size)
                return $this->batch_bcc_send();
        }

        $this->_build_message();

        if ( ! $this->_spool_email())
        {
            return FALSE;
        }
        else
        {
            return TRUE;
        }
    }

    // --------------------------------------------------------------------

    /**
     * Batch Bcc Send.  Sends groups of BCCs in batches
     *
     * @access  public
     * @return  bool
     */
    public function batch_bcc_send()
    {
        $float = $this->bcc_batch_size -1;

        $set = "";

        $chunk = array();

        for ($i = 0; $i < count($this->_bcc_array); $i++)
        {
            if (isset($this->_bcc_array[$i]))
            {
                $set .= ", ".$this->_bcc_array[$i];
            }

            if ($i == $float)
            {
                $chunk[] = substr($set, 1);
                $float = $float + $this->bcc_batch_size;
                $set = "";
            }

            if ($i == count($this->_bcc_array)-1)
            {
                $chunk[] = substr($set, 1);
            }
        }

        for ($i = 0; $i < count($chunk); $i++)
        {
            unset($this->_headers['Bcc']);
            unset($bcc);

            $bcc = $this->_str_to_array($chunk[$i]);
            $bcc = $this->clean_email($bcc);

            if ($this->protocol != 'smtp')
            {
                $this->_set_header('Bcc', implode(", ", $bcc));
            }
            else
            {
                $this->_bcc_array = $bcc;
            }

            $this->_build_message();
            $this->_spool_email();
        }
    }

    // --------------------------------------------------------------------

    /**
     * Unwrap special elements
     *
     * @access  protected
     * @return  void
     */
    protected function _unwrap_specials()
    {
        $this->_finalbody = preg_replace_callback("/\{unwrap\}(.*?)\{\/unwrap\}/si", array($this, '_remove_nl_callback'), $this->_finalbody);
    }

    // --------------------------------------------------------------------

    /**
     * Strip line-breaks via callback
     *
     * @access  protected
     * @return  string
     */
    protected function _remove_nl_callback($matches)
    {
        if (strpos($matches[1], "\r") !== FALSE OR strpos($matches[1], "\n") !== FALSE)
        {
            $matches[1] = str_replace(array("\r\n", "\r", "\n"), '', $matches[1]);
        }

        return $matches[1];
    }

    // --------------------------------------------------------------------

    /**
     * Spool mail to the mail server
     *
     * @access  protected
     * @return  bool
     */
    protected function _spool_email()
    {
        $this->_unwrap_specials();

        switch ($this->_get_protocol())
        {
            case 'mail' :

                    if ( ! $this->_send_with_mail())
                    {
                        $this->_set_error_message('lang:email_send_failure_phpmail');
                        return FALSE;
                    }
            break;
            case 'sendmail' :

                    if ( ! $this->_send_with_sendmail())
                    {
                        $this->_set_error_message('lang:email_send_failure_sendmail');
                        return FALSE;
                    }
            break;
            case 'smtp' :

                    if ( ! $this->_send_with_smtp())
                    {
                        $this->_set_error_message('lang:email_send_failure_smtp');
                        return FALSE;
                    }
            break;

        }

        $this->_set_error_message('lang:email_sent', $this->_get_protocol());
        return TRUE;
    }

    // --------------------------------------------------------------------

    /**
     * Send using mail()
     *
     * @access  protected
     * @return  bool
     */
    protected function _send_with_mail()
    {
        if ($this->_safe_mode == TRUE)
        {
            if ( ! mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str))
            {
                return FALSE;
            }
            else
            {
                return TRUE;
            }
        }
        else
        {
            // most documentation of sendmail using the "-f" flag lacks a space after it, however
            // we've encountered servers that seem to require it to be in place.

            if ( ! mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, "-f ".$this->clean_email($this->_headers['From'])))
            {
                return FALSE;
            }
            else
            {
                return TRUE;
            }
        }
    }

    // --------------------------------------------------------------------

    /**
     * Send using Sendmail
     *
     * @access  protected
     * @return  bool
     */
    protected function _send_with_sendmail()
    {
        $fp = @popen($this->mailpath . " -oi -f ".$this->clean_email($this->_headers['From'])." -t", 'w');

        if ($fp === FALSE OR $fp === NULL)
        {
            // server probably has popen disabled, so nothing we can do to get a verbose error.
            return FALSE;
        }

        fputs($fp, $this->_header_str);
        fputs($fp, $this->_finalbody);

        $status = pclose($fp);

        if (version_compare(PHP_VERSION, '4.2.3') == -1)
        {
            $status = $status >> 8 & 0xFF;
        }

        if ($status != 0)
        {
            $this->_set_error_message('lang:email_exit_status', $status);
            $this->_set_error_message('lang:email_no_socket');
            return FALSE;
        }

        return TRUE;
    }

    // --------------------------------------------------------------------

    /**
     * Send using SMTP
     *
     * @access  protected
     * @return  bool
     */
    protected function _send_with_smtp()
    {
        if ($this->smtp_host == '')
        {
            $this->_set_error_message('lang:email_no_hostname');
            return FALSE;
        }

        $this->_smtp_connect();
        $this->_smtp_authenticate();

        $this->_send_command('from', $this->clean_email($this->_headers['From']));

        foreach ($this->_recipients as $val)
        {
            $this->_send_command('to', $val);
        }

        if (count($this->_cc_array) > 0)
        {
            foreach ($this->_cc_array as $val)
            {
                if ($val != "")
                {
                    $this->_send_command('to', $val);
                }
            }
        }

        if (count($this->_bcc_array) > 0)
        {
            foreach ($this->_bcc_array as $val)
            {
                if ($val != "")
                {
                    $this->_send_command('to', $val);
                }
            }
        }

        $this->_send_command('data');

        // perform dot transformation on any lines that begin with a dot
        $this->_send_data($this->_header_str . preg_replace('/^\./m', '..$1', $this->_finalbody));

        $this->_send_data('.');

        $reply = $this->_get_smtp_data();

        $this->_set_error_message($reply);

        if (strncmp($reply, '250', 3) != 0)
        {
            $this->_set_error_message('lang:email_smtp_error', $reply);
            return FALSE;
        }

        $this->_send_command('quit');
        return TRUE;
    }

    // --------------------------------------------------------------------

    /**
     * SMTP Connect
     *
     * @access  protected
     * @param   string
     * @return  string
     */
    protected function _smtp_connect()
    {
        $ssl = NULL;
        if ($this->smtp_crypto == 'ssl')
            $ssl = 'ssl://';
        $this->_smtp_connect = fsockopen($ssl.$this->smtp_host,
                                        $this->smtp_port,
                                        $errno,
                                        $errstr,
                                        $this->smtp_timeout);

        if ( ! is_resource($this->_smtp_connect))
        {
            $this->_set_error_message('lang:email_smtp_error', $errno." ".$errstr);
            return FALSE;
        }

        $this->_set_error_message($this->_get_smtp_data());

        if ($this->smtp_crypto == 'tls')
        {
            $this->_send_command('hello');
            $this->_send_command('starttls');
            stream_socket_enable_crypto($this->_smtp_connect, TRUE, STREAM_CRYPTO_METHOD_TLS_CLIENT);
        }

        return $this->_send_command('hello');
    }

    // --------------------------------------------------------------------

    /**
     * Send SMTP command
     *
     * @access  protected
     * @param   string
     * @param   string
     * @return  string
     */
    protected function _send_command($cmd, $data = '')
    {
        switch ($cmd)
        {
            case 'hello' :

                    if ($this->_smtp_auth OR $this->_get_encoding() == '8bit')
                        $this->_send_data('EHLO '.$this->_get_hostname());
                    else
                        $this->_send_data('HELO '.$this->_get_hostname());

                        $resp = 250;
            break;
            case 'starttls' :

                        $this->_send_data('STARTTLS');

                        $resp = 220;
            break;
            case 'from' :

                        $this->_send_data('MAIL FROM:<'.$data.'>');

                        $resp = 250;
            break;
            case 'to'   :

                        $this->_send_data('RCPT TO:<'.$data.'>');

                        $resp = 250;
            break;
            case 'data' :

                        $this->_send_data('DATA');

                        $resp = 354;
            break;
            case 'quit' :

                        $this->_send_data('QUIT');

                        $resp = 221;
            break;
        }

        $reply = $this->_get_smtp_data();

        $this->_debug_msg[] = "<pre>".$cmd.": ".$reply."</pre>";

        if (substr($reply, 0, 3) != $resp)
        {
            $this->_set_error_message('lang:email_smtp_error', $reply);
            return FALSE;
        }

        if ($cmd == 'quit')
        {
            fclose($this->_smtp_connect);
        }

        return TRUE;
    }

    // --------------------------------------------------------------------

    /**
     *  SMTP Authenticate
     *
     * @access  protected
     * @return  bool
     */
    protected function _smtp_authenticate()
    {
        if ( ! $this->_smtp_auth)
        {
            return TRUE;
        }

        if ($this->smtp_user == ""  AND  $this->smtp_pass == "")
        {
            $this->_set_error_message('lang:email_no_smtp_unpw');
            return FALSE;
        }

        $this->_send_data('AUTH LOGIN');

        $reply = $this->_get_smtp_data();

        if (strncmp($reply, '334', 3) != 0)
        {
            $this->_set_error_message('lang:email_failed_smtp_login', $reply);
            return FALSE;
        }

        $this->_send_data(base64_encode($this->smtp_user));

        $reply = $this->_get_smtp_data();

        if (strncmp($reply, '334', 3) != 0)
        {
            $this->_set_error_message('lang:email_smtp_auth_un', $reply);
            return FALSE;
        }

        $this->_send_data(base64_encode($this->smtp_pass));

        $reply = $this->_get_smtp_data();

        if (strncmp($reply, '235', 3) != 0)
        {
            $this->_set_error_message('lang:email_smtp_auth_pw', $reply);
            return FALSE;
        }

        return TRUE;
    }

    // --------------------------------------------------------------------

    /**
     * Send SMTP data
     *
     * @access  protected
     * @return  bool
     */
    protected function _send_data($data)
    {
        if ( ! fwrite($this->_smtp_connect, $data . $this->newline))
        {
            $this->_set_error_message('lang:email_smtp_data_failure', $data);
            return FALSE;
        }
        else
        {
            return TRUE;
        }
    }

    // --------------------------------------------------------------------

    /**
     * Get SMTP data
     *
     * @access  protected
     * @return  string
     */
    protected function _get_smtp_data()
    {
        $data = "";

        while ($str = fgets($this->_smtp_connect, 512))
        {
            $data .= $str;

            if (substr($str, 3, 1) == " ")
            {
                break;
            }
        }

        return $data;
    }

    // --------------------------------------------------------------------

    /**
     * Get Hostname
     *
     * @access  protected
     * @return  string
     */
    protected function _get_hostname()
    {
        return (isset($_SERVER['SERVER_NAME'])) ? $_SERVER['SERVER_NAME'] : 'localhost.localdomain';
    }

    // --------------------------------------------------------------------

    /**
     * Get IP
     *
     * @access  protected
     * @return  string
     */
    protected function _get_ip()
    {
        if ($this->_IP !== FALSE)
        {
            return $this->_IP;
        }

        $cip = (isset($_SERVER['HTTP_CLIENT_IP']) AND $_SERVER['HTTP_CLIENT_IP'] != "") ? $_SERVER['HTTP_CLIENT_IP'] : FALSE;
        $rip = (isset($_SERVER['REMOTE_ADDR']) AND $_SERVER['REMOTE_ADDR'] != "") ? $_SERVER['REMOTE_ADDR'] : FALSE;
        $fip = (isset($_SERVER['HTTP_X_FORWARDED_FOR']) AND $_SERVER['HTTP_X_FORWARDED_FOR'] != "") ? $_SERVER['HTTP_X_FORWARDED_FOR'] : FALSE;

        if ($cip && $rip)   $this->_IP = $cip;
        elseif ($rip)       $this->_IP = $rip;
        elseif ($cip)       $this->_IP = $cip;
        elseif ($fip)       $this->_IP = $fip;

        if (strpos($this->_IP, ',') !== FALSE)
        {
            $x = explode(',', $this->_IP);
            $this->_IP = end($x);
        }

        if ( ! preg_match( "/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/", $this->_IP))
        {
            $this->_IP = '0.0.0.0';
        }

        unset($cip);
        unset($rip);
        unset($fip);

        return $this->_IP;
    }

    // --------------------------------------------------------------------

    /**
     * Get Debug Message
     *
     * @access  public
     * @return  string
     */
    public function print_debugger()
    {
        $msg = '';

        if (count($this->_debug_msg) > 0)
        {
            foreach ($this->_debug_msg as $val)
            {
                $msg .= $val;
            }
        }

        $msg .= "<pre>".$this->_header_str."\n".htmlspecialchars($this->_subject)."\n".htmlspecialchars($this->_finalbody).'</pre>';
        return $msg;
    }

    // --------------------------------------------------------------------

    /**
     * Set Message
     *
     * @access  protected
     * @param   string
     * @return  string
     */
    protected function _set_error_message($msg, $val = '')
    {
        $CI =& get_instance();
        $CI->lang->load('email');

        if (substr($msg, 0, 5) != 'lang:' || FALSE === ($line = $CI->lang->line(substr($msg, 5))))
        {
            $this->_debug_msg[] = str_replace('%s', $val, $msg)."<br />";
        }
        else
        {
            $this->_debug_msg[] = str_replace('%s', $val, $line)."<br />";
        }
    }

    // --------------------------------------------------------------------

    /**
     * Mime Types
     *
     * @access  protected
     * @param   string
     * @return  string
     */
    protected 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/x-unknown-content-type" : $mimes[strtolower($ext)];
    }

}
// END CI_Email class

/* End of file Email.php */
/* Location: ./system/libraries/Email.php */