23 March 2021

Contact form mail submitted with images attachment and using the Gmail login credential 3 class.phpmailer file

 <?php

/**

 * PHPMailer - PHP email creation and transport class.

 * PHP Version 5

 * @package PHPMailer

 * @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project

 * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>

 * @author Jim Jagielski (jimjag) <jimjag@gmail.com>

 * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>

 * @author Brent R. Matzelle (original founder)

 * @copyright 2012 - 2014 Marcus Bointon

 * @copyright 2010 - 2012 Jim Jagielski

 * @copyright 2004 - 2009 Andy Prevost

 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License

 * @note 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.

 */


/**

 * PHPMailer - PHP email creation and transport class.

 * @package PHPMailer

 * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>

 * @author Jim Jagielski (jimjag) <jimjag@gmail.com>

 * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>

 * @author Brent R. Matzelle (original founder)

 */

class PHPMailer

{

    /**

     * The PHPMailer Version number.

     * @var string

     */

    public $Version = '5.2.28';


    /**

     * Email priority.

     * Options: null (default), 1 = High, 3 = Normal, 5 = low.

     * When null, the header is not set at all.

     * @var integer

     */

    public $Priority = null;


    /**

     * The character set of the message.

     * @var string

     */

    public $CharSet = 'iso-8859-1';


    /**

     * The MIME Content-type of the message.

     * @var string

     */

    public $ContentType = 'text/plain';


    /**

     * The message encoding.

     * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable".

     * @var string

     */

    public $Encoding = '8bit';


    /**

     * Holds the most recent mailer error message.

     * @var string

     */

    public $ErrorInfo = '';


    /**

     * The From email address for the message.

     * @var string

     */

    public $From = 'root@localhost';


    /**

     * The From name of the message.

     * @var string

     */

    public $FromName = 'Root User';


    /**

     * 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 = '';


    /**

     * The Return-Path of the message.

     * If empty, it will be set to either From or Sender.

     * @var string

     * @deprecated Email senders should never set a return-path header;

     * it's the receiver's job (RFC5321 section 4.4), so this no longer does anything.

     * @link https://tools.ietf.org/html/rfc5321#section-4.4 RFC5321 reference

     */

    public $ReturnPath = '';


    /**

     * The Subject of the message.

     * @var string

     */

    public $Subject = '';


    /**

     * An HTML or plain text message body.

     * If HTML then call isHTML(true).

     * @var string

     */

    public $Body = '';


    /**

     * The plain-text message body.

     * This body can be read by mail clients that do not have HTML email

     * capability such as mutt & Eudora.

     * Clients that can read HTML will view the normal Body.

     * @var string

     */

    public $AltBody = '';


    /**

     * An iCal message part body.

     * Only supported in simple alt or alt_inline message types

     * To generate iCal events, use the bundled extras/EasyPeasyICS.php class or iCalcreator

     * @link http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/

     * @link http://kigkonsult.se/iCalcreator/

     * @var string

     */

    public $Ical = '';


    /**

     * The complete compiled MIME message body.

     * @access protected

     * @var string

     */

    protected $MIMEBody = '';


    /**

     * The complete compiled MIME message headers.

     * @var string

     * @access protected

     */

    protected $MIMEHeader = '';


    /**

     * Extra headers that createHeader() doesn't fold in.

     * @var string

     * @access protected

     */

    protected $mailHeader = '';


    /**

     * Word-wrap the message body to this number of chars.

     * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance.

     * @var integer

     */

    public $WordWrap = 0;


    /**

     * Which method to use to send mail.

     * Options: "mail", "sendmail", or "smtp".

     * @var string

     */

    public $Mailer = 'mail';


    /**

     * The path to the sendmail program.

     * @var string

     */

    public $Sendmail = '/usr/sbin/sendmail';


    /**

     * Whether mail() uses a fully sendmail-compatible MTA.

     * One which supports sendmail's "-oi -f" options.

     * @var boolean

     */

    public $UseSendmailOptions = true;


    /**

     * Path to PHPMailer plugins.

     * Useful if the SMTP class is not in the PHP include path.

     * @var string

     * @deprecated Should not be needed now there is an autoloader.

     */

    public $PluginDir = '';


    /**

     * The email address that a reading confirmation should be sent to, also known as read receipt.

     * @var string

     */

    public $ConfirmReadingTo = '';


    /**

     * The hostname to use in the Message-ID header and as default HELO string.

     * If empty, PHPMailer attempts to find one with, in order,

     * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value

     * 'localhost.localdomain'.

     * @var string

     */

    public $Hostname = '';


    /**

     * An ID to be used in the Message-ID header.

     * If empty, a unique id will be generated.

     * You can set your own, but it must be in the format "<id@domain>",

     * as defined in RFC5322 section 3.6.4 or it will be ignored.

     * @see https://tools.ietf.org/html/rfc5322#section-3.6.4

     * @var string

     */

    public $MessageID = '';


    /**

     * The message Date to be used in the Date header.

     * If empty, the current date will be added.

     * @var string

     */

    public $MessageDate = '';


    /**

     * SMTP hosts.

     * Either a single hostname or multiple semicolon-delimited hostnames.

     * 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").

     * You can also specify encryption type, for example:

     * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465").

     * Hosts will be tried in order.

     * @var string

     */

    public $Host = 'localhost';


    /**

     * The default SMTP server port.

     * @var integer

     * @TODO Why is this needed when the SMTP class takes care of it?

     */

    public $Port = 25;


    /**

     * The SMTP HELO of the message.

     * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find

     * one with the same method described above for $Hostname.

     * @var string

     * @see PHPMailer::$Hostname

     */

    public $Helo = '';


    /**

     * What kind of encryption to use on the SMTP connection.

     * Options: '', 'ssl' or 'tls'

     * @var string

     */

    public $SMTPSecure = '';


    /**

     * Whether to enable TLS encryption automatically if a server supports it,

     * even if `SMTPSecure` is not set to 'tls'.

     * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid.

     * @var boolean

     */

    public $SMTPAutoTLS = true;


    /**

     * Whether to use SMTP authentication.

     * Uses the Username and Password properties.

     * @var boolean

     * @see PHPMailer::$Username

     * @see PHPMailer::$Password

     */

    public $SMTPAuth = false;


    /**

     * Options array passed to stream_context_create when connecting via SMTP.

     * @var array

     */

    public $SMTPOptions = array();


    /**

     * SMTP username.

     * @var string

     */

    public $Username = '';


    /**

     * SMTP password.

     * @var string

     */

    public $Password = '';


    /**

     * SMTP auth type.

     * Options are CRAM-MD5, LOGIN, PLAIN, NTLM, XOAUTH2, attempted in that order if not specified

     * @var string

     */

    public $AuthType = '';


    /**

     * SMTP realm.

     * Used for NTLM auth

     * @var string

     */

    public $Realm = '';


    /**

     * SMTP workstation.

     * Used for NTLM auth

     * @var string

     */

    public $Workstation = '';


    /**

     * The SMTP server timeout in seconds.

     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2

     * @var integer

     */

    public $Timeout = 300;


    /**

     * SMTP class debug output mode.

     * Debug output level.

     * Options:

     * * `0` No output

     * * `1` Commands

     * * `2` Data and commands

     * * `3` As 2 plus connection status

     * * `4` Low-level data output

     * @var integer

     * @see SMTP::$do_debug

     */

    public $SMTPDebug = 0;


    /**

     * How to handle debug output.

     * Options:

     * * `echo` Output plain-text as-is, appropriate for CLI

     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output

     * * `error_log` Output to error log as configured in php.ini

     *

     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:

     * <code>

     * $mail->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};

     * </code>

     * @var string|callable

     * @see SMTP::$Debugoutput

     */

    public $Debugoutput = 'echo';


    /**

     * Whether to keep SMTP connection open after each message.

     * If this is set to true then to close the connection

     * requires an explicit call to smtpClose().

     * @var boolean

     */

    public $SMTPKeepAlive = false;


    /**

     * Whether to split multiple to addresses into multiple messages

     * or send them all in one message.

     * Only supported in `mail` and `sendmail` transports, not in SMTP.

     * @var boolean

     */

    public $SingleTo = false;


    /**

     * Storage for addresses when SingleTo is enabled.

     * @var array

     * @TODO This should really not be public

     */

    public $SingleToArray = array();


    /**

     * Whether to generate VERP addresses on send.

     * Only applicable when sending via SMTP.

     * @link https://en.wikipedia.org/wiki/Variable_envelope_return_path

     * @link http://www.postfix.org/VERP_README.html Postfix VERP info

     * @var boolean

     */

    public $do_verp = false;


    /**

     * Whether to allow sending messages with an empty body.

     * @var boolean

     */

    public $AllowEmpty = false;


    /**

     * The default line ending.

     * @note The default remains "\n". We force CRLF where we know

     *        it must be used via self::CRLF.

     * @var string

     */

    public $LE = "\n";


    /**

     * DKIM selector.

     * @var string

     */

    public $DKIM_selector = '';


    /**

     * DKIM Identity.

     * Usually the email address used as the source of the email.

     * @var string

     */

    public $DKIM_identity = '';


    /**

     * DKIM passphrase.

     * Used if your key is encrypted.

     * @var string

     */

    public $DKIM_passphrase = '';


    /**

     * DKIM signing domain name.

     * @example 'example.com'

     * @var string

     */

    public $DKIM_domain = '';


    /**

     * DKIM private key file path.

     * @var string

     */

    public $DKIM_private = '';


    /**

     * DKIM private key string.

     * If set, takes precedence over `$DKIM_private`.

     * @var string

     */

    public $DKIM_private_string = '';


    /**

     * Callback Action function name.

     *

     * The function that handles the result of the send email action.

     * It is called out by send() for each email sent.

     *

     * Value can be any php callable: http://www.php.net/is_callable

     *

     * Parameters:

     *   boolean $result        result of the send action

     *   array   $to            email addresses of the recipients

     *   array   $cc            cc email addresses

     *   array   $bcc           bcc email addresses

     *   string  $subject       the subject

     *   string  $body          the email body

     *   string  $from          email address of sender

     * @var string

     */

    public $action_function = '';


    /**

     * What to put in the X-Mailer header.

     * Options: An empty string for PHPMailer default, whitespace for none, or a string to use

     * @var string

     */

    public $XMailer = '';


    /**

     * Which validator to use by default when validating email addresses.

     * May be a callable to inject your own validator, but there are several built-in validators.

     * @see PHPMailer::validateAddress()

     * @var string|callable

     * @static

     */

    public static $validator = 'auto';


    /**

     * An instance of the SMTP sender class.

     * @var SMTP

     * @access protected

     */

    protected $smtp = null;


    /**

     * The array of 'to' names and addresses.

     * @var array

     * @access protected

     */

    protected $to = array();


    /**

     * The array of 'cc' names and addresses.

     * @var array

     * @access protected

     */

    protected $cc = array();


    /**

     * The array of 'bcc' names and addresses.

     * @var array

     * @access protected

     */

    protected $bcc = array();


    /**

     * The array of reply-to names and addresses.

     * @var array

     * @access protected

     */

    protected $ReplyTo = array();


    /**

     * An array of all kinds of addresses.

     * Includes all of $to, $cc, $bcc

     * @var array

     * @access protected

     * @see PHPMailer::$to @see PHPMailer::$cc @see PHPMailer::$bcc

     */

    protected $all_recipients = array();


    /**

     * An array of names and addresses queued for validation.

     * In send(), valid and non duplicate entries are moved to $all_recipients

     * and one of $to, $cc, or $bcc.

     * This array is used only for addresses with IDN.

     * @var array

     * @access protected

     * @see PHPMailer::$to @see PHPMailer::$cc @see PHPMailer::$bcc

     * @see PHPMailer::$all_recipients

     */

    protected $RecipientsQueue = array();


    /**

     * An array of reply-to names and addresses queued for validation.

     * In send(), valid and non duplicate entries are moved to $ReplyTo.

     * This array is used only for addresses with IDN.

     * @var array

     * @access protected

     * @see PHPMailer::$ReplyTo

     */

    protected $ReplyToQueue = array();


    /**

     * The array of attachments.

     * @var array

     * @access protected

     */

    protected $attachment = array();


    /**

     * The array of custom headers.

     * @var array

     * @access protected

     */

    protected $CustomHeader = array();


    /**

     * The most recent Message-ID (including angular brackets).

     * @var string

     * @access protected

     */

    protected $lastMessageID = '';


    /**

     * The message's MIME type.

     * @var string

     * @access protected

     */

    protected $message_type = '';


    /**

     * The array of MIME boundary strings.

     * @var array

     * @access protected

     */

    protected $boundary = array();


    /**

     * The array of available languages.

     * @var array

     * @access protected

     */

    protected $language = array();


    /**

     * The number of errors encountered.

     * @var integer

     * @access protected

     */

    protected $error_count = 0;


    /**

     * The S/MIME certificate file path.

     * @var string

     * @access protected

     */

    protected $sign_cert_file = '';


    /**

     * The S/MIME key file path.

     * @var string

     * @access protected

     */

    protected $sign_key_file = '';


    /**

     * The optional S/MIME extra certificates ("CA Chain") file path.

     * @var string

     * @access protected

     */

    protected $sign_extracerts_file = '';


    /**

     * The S/MIME password for the key.

     * Used only if the key is encrypted.

     * @var string

     * @access protected

     */

    protected $sign_key_pass = '';


    /**

     * Whether to throw exceptions for errors.

     * @var boolean

     * @access protected

     */

    protected $exceptions = false;


    /**

     * Unique ID used for message ID and boundaries.

     * @var string

     * @access protected

     */

    protected $uniqueid = '';


    /**

     * Error severity: message only, continue processing.

     */

    const STOP_MESSAGE = 0;


    /**

     * Error severity: message, likely ok to continue processing.

     */

    const STOP_CONTINUE = 1;


    /**

     * Error severity: message, plus full stop, critical error reached.

     */

    const STOP_CRITICAL = 2;


    /**

     * SMTP RFC standard line ending.

     */

    const CRLF = "\r\n";


    /**

     * The maximum line length allowed by RFC 2822 section 2.1.1

     * @var integer

     */

    const MAX_LINE_LENGTH = 998;


    /**

     * Constructor.

     * @param boolean $exceptions Should we throw external exceptions?

     */

    public function __construct($exceptions = null)

    {

        if ($exceptions !== null) {

            $this->exceptions = (boolean)$exceptions;

        }

        //Pick an appropriate debug output format automatically

        $this->Debugoutput = (strpos(PHP_SAPI, 'cli') !== false ? 'echo' : 'html');

    }


    /**

     * Destructor.

     */

    public function __destruct()

    {

        //Close any open SMTP connection nicely

        $this->smtpClose();

    }


    /**

     * Call mail() in a safe_mode-aware fashion.

     * Also, unless sendmail_path points to sendmail (or something that

     * claims to be sendmail), don't pass params (not a perfect fix,

     * but it will do)

     * @param string $to To

     * @param string $subject Subject

     * @param string $body Message Body

     * @param string $header Additional Header(s)

     * @param string $params Params

     * @access private

     * @return boolean

     */

    private function mailPassthru($to, $subject, $body, $header, $params)

    {

        //Check overloading of mail function to avoid double-encoding

        if (ini_get('mbstring.func_overload') & 1) {

            $subject = $this->secureHeader($subject);

        } else {

            $subject = $this->encodeHeader($this->secureHeader($subject));

        }


        //Can't use additional_parameters in safe_mode, calling mail() with null params breaks

        //@link http://php.net/manual/en/function.mail.php

        if (ini_get('safe_mode') or !$this->UseSendmailOptions or is_null($params)) {

            $result = @mail($to, $subject, $body, $header);

        } else {

            $result = @mail($to, $subject, $body, $header, $params);

        }

        return $result;

    }

    /**

     * Output debugging info via user-defined method.

     * Only generates output if SMTP debug output is enabled (@see SMTP::$do_debug).

     * @see PHPMailer::$Debugoutput

     * @see PHPMailer::$SMTPDebug

     * @param string $str

     */

    protected function edebug($str)

    {

        if ($this->SMTPDebug <= 0) {

            return;

        }

        //Avoid clash with built-in function names

        if (!in_array($this->Debugoutput, array('error_log', 'html', 'echo')) and is_callable($this->Debugoutput)) {

            call_user_func($this->Debugoutput, $str, $this->SMTPDebug);

            return;

        }

        switch ($this->Debugoutput) {

            case 'error_log':

                //Don't output, just log

                error_log($str);

                break;

            case 'html':

                //Cleans up output a bit for a better looking, HTML-safe output

                echo htmlentities(

                    preg_replace('/[\r\n]+/', '', $str),

                    ENT_QUOTES,

                    'UTF-8'

                )

                . "<br>\n";

                break;

            case 'echo':

            default:

                //Normalize line breaks

                $str = preg_replace('/\r\n?/ms', "\n", $str);

                echo gmdate('Y-m-d H:i:s') . "\t" . str_replace(

                    "\n",

                    "\n                   \t                  ",

                    trim($str)

                ) . "\n";

        }

    }


    /**

     * Sets message type to HTML or plain.

     * @param boolean $isHtml True for HTML mode.

     * @return void

     */

    public function isHTML($isHtml = true)

    {

        if ($isHtml) {

            $this->ContentType = 'text/html';

        } else {

            $this->ContentType = 'text/plain';

        }

    }


    /**

     * Send messages using SMTP.

     * @return void

     */

    public function isSMTP()

    {

        $this->Mailer = 'smtp';

    }


    /**

     * Send messages using PHP's mail() function.

     * @return void

     */

    public function isMail()

    {

        $this->Mailer = 'mail';

    }


    /**

     * Send messages using $Sendmail.

     * @return void

     */

    public function isSendmail()

    {

        $ini_sendmail_path = ini_get('sendmail_path');


        if (!stristr($ini_sendmail_path, 'sendmail')) {

            $this->Sendmail = '/usr/sbin/sendmail';

        } else {

            $this->Sendmail = $ini_sendmail_path;

        }

        $this->Mailer = 'sendmail';

    }


    /**

     * Send messages using qmail.

     * @return void

     */

    public function isQmail()

    {

        $ini_sendmail_path = ini_get('sendmail_path');


        if (!stristr($ini_sendmail_path, 'qmail')) {

            $this->Sendmail = '/var/qmail/bin/qmail-inject';

        } else {

            $this->Sendmail = $ini_sendmail_path;

        }

        $this->Mailer = 'qmail';

    }


    /**

     * Add a "To" address.

     * @param string $address The email address to send to

     * @param string $name

     * @return boolean true on success, false if address already used or invalid in some way

     */

    public function addAddress($address, $name = '')

    {

        return $this->addOrEnqueueAnAddress('to', $address, $name);

    }


    /**

     * Add a "CC" address.

     * @note: This function works with the SMTP mailer on win32, not with the "mail" mailer.

     * @param string $address The email address to send to

     * @param string $name

     * @return boolean true on success, false if address already used or invalid in some way

     */

    public function addCC($address, $name = '')

    {

        return $this->addOrEnqueueAnAddress('cc', $address, $name);

    }


    /**

     * Add a "BCC" address.

     * @note: This function works with the SMTP mailer on win32, not with the "mail" mailer.

     * @param string $address The email address to send to

     * @param string $name

     * @return boolean true on success, false if address already used or invalid in some way

     */

    public function addBCC($address, $name = '')

    {

        return $this->addOrEnqueueAnAddress('bcc', $address, $name);

    }


    /**

     * Add a "Reply-To" address.

     * @param string $address The email address to reply to

     * @param string $name

     * @return boolean true on success, false if address already used or invalid in some way

     */

    public function addReplyTo($address, $name = '')

    {

        return $this->addOrEnqueueAnAddress('Reply-To', $address, $name);

    }


    /**

     * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer

     * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still

     * be modified after calling this function), addition of such addresses is delayed until send().

     * Addresses that have been added already return false, but do not throw exceptions.

     * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo'

     * @param string $address The email address to send, resp. to reply to

     * @param string $name

     * @throws phpmailerException

     * @return boolean true on success, false if address already used or invalid in some way

     * @access protected

     */

    protected function addOrEnqueueAnAddress($kind, $address, $name)

    {

        $address = trim($address);

        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim

        if (($pos = strrpos($address, '@')) === false) {

            // At-sign is misssing.

            $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";

            $this->setError($error_message);

            $this->edebug($error_message);

            if ($this->exceptions) {

                throw new phpmailerException($error_message);

            }

            return false;

        }

        $params = array($kind, $address, $name);

        // Enqueue addresses with IDN until we know the PHPMailer::$CharSet.

        if ($this->has8bitChars(substr($address, ++$pos)) and $this->idnSupported()) {

            if ($kind != 'Reply-To') {

                if (!array_key_exists($address, $this->RecipientsQueue)) {

                    $this->RecipientsQueue[$address] = $params;

                    return true;

                }

            } else {

                if (!array_key_exists($address, $this->ReplyToQueue)) {

                    $this->ReplyToQueue[$address] = $params;

                    return true;

                }

            }

            return false;

        }

        // Immediately add standard addresses without IDN.

        return call_user_func_array(array($this, 'addAnAddress'), $params);

    }


    /**

     * Add an address to one of the recipient arrays or to the ReplyTo array.

     * Addresses that have been added already return false, but do not throw exceptions.

     * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo'

     * @param string $address The email address to send, resp. to reply to

     * @param string $name

     * @throws phpmailerException

     * @return boolean true on success, false if address already used or invalid in some way

     * @access protected

     */

    protected function addAnAddress($kind, $address, $name = '')

    {

        if (!in_array($kind, array('to', 'cc', 'bcc', 'Reply-To'))) {

            $error_message = $this->lang('Invalid recipient kind: ') . $kind;

            $this->setError($error_message);

            $this->edebug($error_message);

            if ($this->exceptions) {

                throw new phpmailerException($error_message);

            }

            return false;

        }

        if (!$this->validateAddress($address)) {

            $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";

            $this->setError($error_message);

            $this->edebug($error_message);

            if ($this->exceptions) {

                throw new phpmailerException($error_message);

            }

            return false;

        }

        if ($kind != 'Reply-To') {

            if (!array_key_exists(strtolower($address), $this->all_recipients)) {

                array_push($this->$kind, array($address, $name));

                $this->all_recipients[strtolower($address)] = true;

                return true;

            }

        } else {

            if (!array_key_exists(strtolower($address), $this->ReplyTo)) {

                $this->ReplyTo[strtolower($address)] = array($address, $name);

                return true;

            }

        }

        return false;

    }


    /**

     * Parse and validate a string containing one or more RFC822-style comma-separated email addresses

     * of the form "display name <address>" into an array of name/address pairs.

     * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available.

     * Note that quotes in the name part are removed.

     * @param string $addrstr The address list string

     * @param bool $useimap Whether to use the IMAP extension to parse the list

     * @return array

     * @link http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation

     */

    public function parseAddresses($addrstr, $useimap = true)

    {

        $addresses = array();

        if ($useimap and function_exists('imap_rfc822_parse_adrlist')) {

            //Use this built-in parser if it's available

            $list = imap_rfc822_parse_adrlist($addrstr, '');

            foreach ($list as $address) {

                if ($address->host != '.SYNTAX-ERROR.') {

                    if ($this->validateAddress($address->mailbox . '@' . $address->host)) {

                        $addresses[] = array(

                            'name' => (property_exists($address, 'personal') ? $address->personal : ''),

                            'address' => $address->mailbox . '@' . $address->host

                        );

                    }

                }

            }

        } else {

            //Use this simpler parser

            $list = explode(',', $addrstr);

            foreach ($list as $address) {

                $address = trim($address);

                //Is there a separate name part?

                if (strpos($address, '<') === false) {

                    //No separate name, just use the whole thing

                    if ($this->validateAddress($address)) {

                        $addresses[] = array(

                            'name' => '',

                            'address' => $address

                        );

                    }

                } else {

                    list($name, $email) = explode('<', $address);

                    $email = trim(str_replace('>', '', $email));

                    if ($this->validateAddress($email)) {

                        $addresses[] = array(

                            'name' => trim(str_replace(array('"', "'"), '', $name)),

                            'address' => $email

                        );

                    }

                }

            }

        }

        return $addresses;

    }


    /**

     * Set the From and FromName properties.

     * @param string $address

     * @param string $name

     * @param boolean $auto Whether to also set the Sender address, defaults to true

     * @throws phpmailerException

     * @return boolean

     */

    public function setFrom($address, $name = '', $auto = true)

    {

        $address = trim($address);

        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim

        // Don't validate now addresses with IDN. Will be done in send().

        if (($pos = strrpos($address, '@')) === false or

            (!$this->has8bitChars(substr($address, ++$pos)) or !$this->idnSupported()) and

            !$this->validateAddress($address)) {

            $error_message = $this->lang('invalid_address') . " (setFrom) $address";

            $this->setError($error_message);

            $this->edebug($error_message);

            if ($this->exceptions) {

                throw new phpmailerException($error_message);

            }

            return false;

        }

        $this->From = $address;

        $this->FromName = $name;

        if ($auto) {

            if (empty($this->Sender)) {

                $this->Sender = $address;

            }

        }

        return true;

    }


    /**

     * Return the Message-ID header of the last email.

     * Technically this is the value from the last time the headers were created,

     * but it's also the message ID of the last sent message except in

     * pathological cases.

     * @return string

     */

    public function getLastMessageID()

    {

        return $this->lastMessageID;

    }


    /**

     * Check that a string looks like an email address.

     * @param string $address The email address to check

     * @param string|callable $patternselect A selector for the validation pattern to use :

     * * `auto` Pick best pattern automatically;

     * * `pcre8` Use the squiloople.com pattern, requires PCRE > 8.0, PHP >= 5.3.2, 5.2.14;

     * * `pcre` Use old PCRE implementation;

     * * `php` Use PHP built-in FILTER_VALIDATE_EMAIL;

     * * `html5` Use the pattern given by the HTML5 spec for 'email' type form input elements.

     * * `noregex` Don't use a regex: super fast, really dumb.

     * Alternatively you may pass in a callable to inject your own validator, for example:

     * PHPMailer::validateAddress('user@example.com', function($address) {

     *     return (strpos($address, '@') !== false);

     * });

     * You can also set the PHPMailer::$validator static to a callable, allowing built-in methods to use your validator.

     * @return boolean

     * @static

     * @access public

     */

    public static function validateAddress($address, $patternselect = null)

    {

        if (is_null($patternselect)) {

            $patternselect = self::$validator;

        }

        if (is_callable($patternselect)) {

            return call_user_func($patternselect, $address);

        }

        //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321

        if (strpos($address, "\n") !== false or strpos($address, "\r") !== false) {

            return false;

        }

        if (!$patternselect or $patternselect == 'auto') {

            //Check this constant first so it works when extension_loaded() is disabled by safe mode

            //Constant was added in PHP 5.2.4

            if (defined('PCRE_VERSION')) {

                //This pattern can get stuck in a recursive loop in PCRE <= 8.0.2

                if (version_compare(PCRE_VERSION, '8.0.3') >= 0) {

                    $patternselect = 'pcre8';

                } else {

                    $patternselect = 'pcre';

                }

            } elseif (function_exists('extension_loaded') and extension_loaded('pcre')) {

                //Fall back to older PCRE

                $patternselect = 'pcre';

            } else {

                //Filter_var appeared in PHP 5.2.0 and does not require the PCRE extension

                if (version_compare(PHP_VERSION, '5.2.0') >= 0) {

                    $patternselect = 'php';

                } else {

                    $patternselect = 'noregex';

                }

            }

        }

        switch ($patternselect) {

            case 'pcre8':

                /**

                 * Uses the same RFC5322 regex on which FILTER_VALIDATE_EMAIL is based, but allows dotless domains.

                 * @link http://squiloople.com/2009/12/20/email-address-validation/

                 * @copyright 2009-2010 Michael Rushton

                 * Feel free to use and redistribute this code. But please keep this copyright notice.

                 */

                return (boolean)preg_match(

                    '/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' .

                    '((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' .

                    '(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' .

                    '([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' .

                    '(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' .

                    '(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' .

                    '|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' .

                    '|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' .

                    '|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD',

                    $address

                );

            case 'pcre':

                //An older regex that doesn't need a recent PCRE

                return (boolean)preg_match(

                    '/^(?!(?>"?(?>\\\[ -~]|[^"])"?){255,})(?!(?>"?(?>\\\[ -~]|[^"])"?){65,}@)(?>' .

                    '[!#-\'*+\/-9=?^-~-]+|"(?>(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\xFF]))*")' .

                    '(?>\.(?>[!#-\'*+\/-9=?^-~-]+|"(?>(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\xFF]))*"))*' .

                    '@(?>(?![a-z0-9-]{64,})(?>[a-z0-9](?>[a-z0-9-]*[a-z0-9])?)(?>\.(?![a-z0-9-]{64,})' .

                    '(?>[a-z0-9](?>[a-z0-9-]*[a-z0-9])?)){0,126}|\[(?:(?>IPv6:(?>(?>[a-f0-9]{1,4})(?>:' .

                    '[a-f0-9]{1,4}){7}|(?!(?:.*[a-f0-9][:\]]){8,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?' .

                    '::(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?))|(?>(?>IPv6:(?>[a-f0-9]{1,4}(?>:' .

                    '[a-f0-9]{1,4}){5}:|(?!(?:.*[a-f0-9]:){6,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4})?' .

                    '::(?>(?:[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4}):)?))?(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}' .

                    '|[1-9]?[0-9])(?>\.(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}))\])$/isD',

                    $address

                );

            case 'html5':

                /**

                 * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements.

                 * @link http://www.whatwg.org/specs/web-apps/current-work/#e-mail-state-(type=email)

                 */

                return (boolean)preg_match(

                    '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' .

                    '[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD',

                    $address

                );

            case 'noregex':

                //No PCRE! Do something _very_ approximate!

                //Check the address is 3 chars or longer and contains an @ that's not the first or last char

                return (strlen($address) >= 3

                    and strpos($address, '@') >= 1

                    and strpos($address, '@') != strlen($address) - 1);

            case 'php':

            default:

                return (boolean)filter_var($address, FILTER_VALIDATE_EMAIL);

        }

    }


    /**

     * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the

     * "intl" and "mbstring" PHP extensions.

     * @return bool "true" if required functions for IDN support are present

     */

    public function idnSupported()

    {

        // @TODO: Write our own "idn_to_ascii" function for PHP <= 5.2.

        return function_exists('idn_to_ascii') and function_exists('mb_convert_encoding');

    }


    /**

     * Converts IDN in given email address to its ASCII form, also known as punycode, if possible.

     * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet.

     * This function silently returns unmodified address if:

     * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)

     * - Conversion to punycode is impossible (e.g. required PHP functions are not available)

     *   or fails for any reason (e.g. domain has characters not allowed in an IDN)

     * @see PHPMailer::$CharSet

     * @param string $address The email address to convert

     * @return string The encoded address in ASCII form

     */

    public function punyencodeAddress($address)

    {

        // Verify we have required functions, CharSet, and at-sign.

        if ($this->idnSupported() and

            !empty($this->CharSet) and

            ($pos = strrpos($address, '@')) !== false) {

            $domain = substr($address, ++$pos);

            // Verify CharSet string is a valid one, and domain properly encoded in this CharSet.

            if ($this->has8bitChars($domain) and @mb_check_encoding($domain, $this->CharSet)) {

                $domain = mb_convert_encoding($domain, 'UTF-8', $this->CharSet);

                if (($punycode = defined('INTL_IDNA_VARIANT_UTS46') ?

                    idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46) :

                    idn_to_ascii($domain)) !== false) {

                    return substr($address, 0, $pos) . $punycode;

                }

            }

        }

        return $address;

    }


    /**

     * Create a message and send it.

     * Uses the sending method specified by $Mailer.

     * @throws phpmailerException

     * @return boolean false on error - See the ErrorInfo property for details of the error.

     */

    public function send()

    {

        try {

            if (!$this->preSend()) {

                return false;

            }

            return $this->postSend();

        } catch (phpmailerException $exc) {

            $this->mailHeader = '';

            $this->setError($exc->getMessage());

            if ($this->exceptions) {

                throw $exc;

            }

            return false;

        }

    }


    /**

     * Prepare a message for sending.

     * @throws phpmailerException

     * @return boolean

     */

    public function preSend()

    {

        try {

            $this->error_count = 0; // Reset errors

            $this->mailHeader = '';


            // Dequeue recipient and Reply-To addresses with IDN

            foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) {

                $params[1] = $this->punyencodeAddress($params[1]);

                call_user_func_array(array($this, 'addAnAddress'), $params);

            }

            if ((count($this->to) + count($this->cc) + count($this->bcc)) < 1) {

                throw new phpmailerException($this->lang('provide_address'), self::STOP_CRITICAL);

            }


            // Validate From, Sender, and ConfirmReadingTo addresses

            foreach (array('From', 'Sender', 'ConfirmReadingTo') as $address_kind) {

                $this->$address_kind = trim($this->$address_kind);

                if (empty($this->$address_kind)) {

                    continue;

                }

                $this->$address_kind = $this->punyencodeAddress($this->$address_kind);

                if (!$this->validateAddress($this->$address_kind)) {

                    $error_message = $this->lang('invalid_address') . ' (punyEncode) ' . $this->$address_kind;

                    $this->setError($error_message);

                    $this->edebug($error_message);

                    if ($this->exceptions) {

                        throw new phpmailerException($error_message);

                    }

                    return false;

                }

            }


            // Set whether the message is multipart/alternative

            if ($this->alternativeExists()) {

                $this->ContentType = 'multipart/alternative';

            }


            $this->setMessageType();

            // Refuse to send an empty message unless we are specifically allowing it

            if (!$this->AllowEmpty and empty($this->Body)) {

                throw new phpmailerException($this->lang('empty_message'), self::STOP_CRITICAL);

            }


            // Create body before headers in case body makes changes to headers (e.g. altering transfer encoding)

            $this->MIMEHeader = '';

            $this->MIMEBody = $this->createBody();

            // createBody may have added some headers, so retain them

            $tempheaders = $this->MIMEHeader;

            $this->MIMEHeader = $this->createHeader();

            $this->MIMEHeader .= $tempheaders;


            // To capture the complete message when using mail(), create

            // an extra header list which createHeader() doesn't fold in

            if ($this->Mailer == 'mail') {

                if (count($this->to) > 0) {

                    $this->mailHeader .= $this->addrAppend('To', $this->to);

                } else {

                    $this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;');

                }

                $this->mailHeader .= $this->headerLine(

                    'Subject',

                    $this->encodeHeader($this->secureHeader(trim($this->Subject)))

                );

            }


            // Sign with DKIM if enabled

            if (!empty($this->DKIM_domain)

                and !empty($this->DKIM_selector)

                and (!empty($this->DKIM_private_string)

                    or (!empty($this->DKIM_private)

                        and self::isPermittedPath($this->DKIM_private)

                        and file_exists($this->DKIM_private)

                    )

                )

            ) {

                $header_dkim = $this->DKIM_Add(

                    $this->MIMEHeader . $this->mailHeader,

                    $this->encodeHeader($this->secureHeader($this->Subject)),

                    $this->MIMEBody

                );

                $this->MIMEHeader = rtrim($this->MIMEHeader, "\r\n ") . self::CRLF .

                    str_replace("\r\n", "\n", $header_dkim) . self::CRLF;

            }

            return true;

        } catch (phpmailerException $exc) {

            $this->setError($exc->getMessage());

            if ($this->exceptions) {

                throw $exc;

            }

            return false;

        }

    }


    /**

     * Actually send a message.

     * Send the email via the selected mechanism

     * @throws phpmailerException

     * @return boolean

     */

    public function postSend()

    {

        try {

            // Choose the mailer and send through it

            switch ($this->Mailer) {

                case 'sendmail':

                case 'qmail':

                    return $this->sendmailSend($this->MIMEHeader, $this->MIMEBody);

                case 'smtp':

                    return $this->smtpSend($this->MIMEHeader, $this->MIMEBody);

                case 'mail':

                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);

                default:

                    $sendMethod = $this->Mailer.'Send';

                    if (method_exists($this, $sendMethod)) {

                        return $this->$sendMethod($this->MIMEHeader, $this->MIMEBody);

                    }


                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);

            }

        } catch (phpmailerException $exc) {

            $this->setError($exc->getMessage());

            $this->edebug($exc->getMessage());

            if ($this->exceptions) {

                throw $exc;

            }

        }

        return false;

    }


    /**

     * Send mail using the $Sendmail program.

     * @param string $header The message headers

     * @param string $body The message body

     * @see PHPMailer::$Sendmail

     * @throws phpmailerException

     * @access protected

     * @return boolean

     */

    protected function sendmailSend($header, $body)

    {

        // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.

        if (!empty($this->Sender) and self::isShellSafe($this->Sender)) {

            if ($this->Mailer == 'qmail') {

                $sendmailFmt = '%s -f%s';

            } else {

                $sendmailFmt = '%s -oi -f%s -t';

            }

        } else {

            if ($this->Mailer == 'qmail') {

                $sendmailFmt = '%s';

            } else {

                $sendmailFmt = '%s -oi -t';

            }

        }


        // TODO: If possible, this should be changed to escapeshellarg.  Needs thorough testing.

        $sendmail = sprintf($sendmailFmt, escapeshellcmd($this->Sendmail), $this->Sender);


        if ($this->SingleTo) {

            foreach ($this->SingleToArray as $toAddr) {

                if (!@$mail = popen($sendmail, 'w')) {

                    throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);

                }

                fputs($mail, 'To: ' . $toAddr . "\n");

                fputs($mail, $header);

                fputs($mail, $body);

                $result = pclose($mail);

                $this->doCallback(

                    ($result == 0),

                    array($toAddr),

                    $this->cc,

                    $this->bcc,

                    $this->Subject,

                    $body,

                    $this->From

                );

                if ($result != 0) {

                    throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);

                }

            }

        } else {

            if (!@$mail = popen($sendmail, 'w')) {

                throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);

            }

            fputs($mail, $header);

            fputs($mail, $body);

            $result = pclose($mail);

            $this->doCallback(

                ($result == 0),

                $this->to,

                $this->cc,

                $this->bcc,

                $this->Subject,

                $body,

                $this->From

            );

            if ($result != 0) {

                throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);

            }

        }

        return true;

    }


    /**

     * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters.

     *

     * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows.

     * @param string $string The string to be validated

     * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report

     * @access protected

     * @return boolean

     */

    protected static function isShellSafe($string)

    {

        // Future-proof

        if (escapeshellcmd($string) !== $string

            or !in_array(escapeshellarg($string), array("'$string'", "\"$string\""))

        ) {

            return false;

        }


        $length = strlen($string);


        for ($i = 0; $i < $length; $i++) {

            $c = $string[$i];


            // All other characters have a special meaning in at least one common shell, including = and +.

            // Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here.

            // Note that this does permit non-Latin alphanumeric characters based on the current locale.

            if (!ctype_alnum($c) && strpos('@_-.', $c) === false) {

                return false;

            }

        }


        return true;

    }


    /**

     * Check whether a file path is of a permitted type.

     * Used to reject URLs and phar files from functions that access local file paths,

     * such as addAttachment.

     * @param string $path A relative or absolute path to a file.

     * @return bool

     */

    protected static function isPermittedPath($path)

    {

        return !preg_match('#^[a-z]+://#i', $path);

    }


    /**

     * Send mail using the PHP mail() function.

     * @param string $header The message headers

     * @param string $body The message body

     * @link http://www.php.net/manual/en/book.mail.php

     * @throws phpmailerException

     * @access protected

     * @return boolean

     */

    protected function mailSend($header, $body)

    {

        $toArr = array();

        foreach ($this->to as $toaddr) {

            $toArr[] = $this->addrFormat($toaddr);

        }

        $to = implode(', ', $toArr);


        $params = null;

        //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver

        if (!empty($this->Sender) and $this->validateAddress($this->Sender)) {

            // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.

            if (self::isShellSafe($this->Sender)) {

                $params = sprintf('-f%s', $this->Sender);

            }

        }

        if (!empty($this->Sender) and !ini_get('safe_mode') and $this->validateAddress($this->Sender)) {

            $old_from = ini_get('sendmail_from');

            ini_set('sendmail_from', $this->Sender);

        }

        $result = false;

        if ($this->SingleTo and count($toArr) > 1) {

            foreach ($toArr as $toAddr) {

                $result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params);

                $this->doCallback($result, array($toAddr), $this->cc, $this->bcc, $this->Subject, $body, $this->From);

            }

        } else {

            $result = $this->mailPassthru($to, $this->Subject, $body, $header, $params);

            $this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From);

        }

        if (isset($old_from)) {

            ini_set('sendmail_from', $old_from);

        }

        if (!$result) {

            throw new phpmailerException($this->lang('instantiate'), self::STOP_CRITICAL);

        }

        return true;

    }


    /**

     * Get an instance to use for SMTP operations.

     * Override this function to load your own SMTP implementation

     * @return SMTP

     */

    public function getSMTPInstance()

    {

        if (!is_object($this->smtp)) {

            $this->smtp = new SMTP;

        }

        return $this->smtp;

    }


    /**

     * Send mail via SMTP.

     * Returns false if there is a bad MAIL FROM, RCPT, or DATA input.

     * Uses the PHPMailerSMTP class by default.

     * @see PHPMailer::getSMTPInstance() to use a different class.

     * @param string $header The message headers

     * @param string $body The message body

     * @throws phpmailerException

     * @uses SMTP

     * @access protected

     * @return boolean

     */

    protected function smtpSend($header, $body)

    {

        $bad_rcpt = array();

        if (!$this->smtpConnect($this->SMTPOptions)) {

            throw new phpmailerException($this->lang('smtp_connect_failed'), self::STOP_CRITICAL);

        }

        if (!empty($this->Sender) and $this->validateAddress($this->Sender)) {

            $smtp_from = $this->Sender;

        } else {

            $smtp_from = $this->From;

        }

        if (!$this->smtp->mail($smtp_from)) {

            $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));

            throw new phpmailerException($this->ErrorInfo, self::STOP_CRITICAL);

        }


        // Attempt to send to all recipients

        foreach (array($this->to, $this->cc, $this->bcc) as $togroup) {

            foreach ($togroup as $to) {

                if (!$this->smtp->recipient($to[0])) {

                    $error = $this->smtp->getError();

                    $bad_rcpt[] = array('to' => $to[0], 'error' => $error['detail']);

                    $isSent = false;

                } else {

                    $isSent = true;

                }

                $this->doCallback($isSent, array($to[0]), array(), array(), $this->Subject, $body, $this->From);

            }

        }


        // Only send the DATA command if we have viable recipients

        if ((count($this->all_recipients) > count($bad_rcpt)) and !$this->smtp->data($header . $body)) {

            throw new phpmailerException($this->lang('data_not_accepted'), self::STOP_CRITICAL);

        }

        if ($this->SMTPKeepAlive) {

            $this->smtp->reset();

        } else {

            $this->smtp->quit();

            $this->smtp->close();

        }

        //Create error message for any bad addresses

        if (count($bad_rcpt) > 0) {

            $errstr = '';

            foreach ($bad_rcpt as $bad) {

                $errstr .= $bad['to'] . ': ' . $bad['error'];

            }

            throw new phpmailerException(

                $this->lang('recipients_failed') . $errstr,

                self::STOP_CONTINUE

            );

        }

        return true;

    }


    /**

     * Initiate a connection to an SMTP server.

     * Returns false if the operation failed.

     * @param array $options An array of options compatible with stream_context_create()

     * @uses SMTP

     * @access public

     * @throws phpmailerException

     * @return boolean

     */

    public function smtpConnect($options = null)

    {

        if (is_null($this->smtp)) {

            $this->smtp = $this->getSMTPInstance();

        }


        //If no options are provided, use whatever is set in the instance

        if (is_null($options)) {

            $options = $this->SMTPOptions;

        }


        // Already connected?

        if ($this->smtp->connected()) {

            return true;

        }


        $this->smtp->setTimeout($this->Timeout);

        $this->smtp->setDebugLevel($this->SMTPDebug);

        $this->smtp->setDebugOutput($this->Debugoutput);

        $this->smtp->setVerp($this->do_verp);

        $hosts = explode(';', $this->Host);

        $lastexception = null;


        foreach ($hosts as $hostentry) {

            $hostinfo = array();

            if (!preg_match(

                '/^((ssl|tls):\/\/)*([a-zA-Z0-9\.-]*|\[[a-fA-F0-9:]+\]):?([0-9]*)$/',

                trim($hostentry),

                $hostinfo

            )) {

                // Not a valid host entry

                $this->edebug('Ignoring invalid host: ' . $hostentry);

                continue;

            }

            // $hostinfo[2]: optional ssl or tls prefix

            // $hostinfo[3]: the hostname

            // $hostinfo[4]: optional port number

            // The host string prefix can temporarily override the current setting for SMTPSecure

            // If it's not specified, the default value is used

            $prefix = '';

            $secure = $this->SMTPSecure;

            $tls = ($this->SMTPSecure == 'tls');

            if ('ssl' == $hostinfo[2] or ('' == $hostinfo[2] and 'ssl' == $this->SMTPSecure)) {

                $prefix = 'ssl://';

                $tls = false; // Can't have SSL and TLS at the same time

                $secure = 'ssl';

            } elseif ($hostinfo[2] == 'tls') {

                $tls = true;

                // tls doesn't use a prefix

                $secure = 'tls';

            }

            //Do we need the OpenSSL extension?

            $sslext = defined('OPENSSL_ALGO_SHA1');

            if ('tls' === $secure or 'ssl' === $secure) {

                //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled

                if (!$sslext) {

                    throw new phpmailerException($this->lang('extension_missing').'openssl', self::STOP_CRITICAL);

                }

            }

            $host = $hostinfo[3];

            $port = $this->Port;

            $tport = (integer)$hostinfo[4];

            if ($tport > 0 and $tport < 65536) {

                $port = $tport;

            }

            if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) {

                try {

                    if ($this->Helo) {

                        $hello = $this->Helo;

                    } else {

                        $hello = $this->serverHostname();

                    }

                    $this->smtp->hello($hello);

                    //Automatically enable TLS encryption if:

                    // * it's not disabled

                    // * we have openssl extension

                    // * we are not already using SSL

                    // * the server offers STARTTLS

                    if ($this->SMTPAutoTLS and $sslext and $secure != 'ssl' and $this->smtp->getServerExt('STARTTLS')) {

                        $tls = true;

                    }

                    if ($tls) {

                        if (!$this->smtp->startTLS()) {

                            throw new phpmailerException($this->lang('connect_host'));

                        }

                        // We must resend EHLO after TLS negotiation

                        $this->smtp->hello($hello);

                    }

                    if ($this->SMTPAuth) {

                        if (!$this->smtp->authenticate(

                            $this->Username,

                            $this->Password,

                            $this->AuthType,

                            $this->Realm,

                            $this->Workstation

                        )

                        ) {

                            throw new phpmailerException($this->lang('authenticate'));

                        }

                    }

                    return true;

                } catch (phpmailerException $exc) {

                    $lastexception = $exc;

                    $this->edebug($exc->getMessage());

                    // We must have connected, but then failed TLS or Auth, so close connection nicely

                    $this->smtp->quit();

                }

            }

        }

        // If we get here, all connection attempts have failed, so close connection hard

        $this->smtp->close();

        // As we've caught all exceptions, just report whatever the last one was

        if ($this->exceptions and !is_null($lastexception)) {

            throw $lastexception;

        }

        return false;

    }


    /**

     * Close the active SMTP session if one exists.

     * @return void

     */

    public function smtpClose()

    {

        if (is_a($this->smtp, 'SMTP')) {

            if ($this->smtp->connected()) {

                $this->smtp->quit();

                $this->smtp->close();

            }

        }

    }


    /**

     * Set the language for error messages.

     * Returns false if it cannot load the language file.

     * The default language is English.

     * @param string $langcode ISO 639-1 2-character language code (e.g. French is "fr")

     * @param string $lang_path Path to the language file directory, with trailing separator (slash)

     * @return boolean

     * @access public

     */

    public function setLanguage($langcode = 'en', $lang_path = '')

    {

        // Backwards compatibility for renamed language codes

        $renamed_langcodes = array(

            'br' => 'pt_br',

            'cz' => 'cs',

            'dk' => 'da',

            'no' => 'nb',

            'se' => 'sv',

            'sr' => 'rs'

        );


        if (isset($renamed_langcodes[$langcode])) {

            $langcode = $renamed_langcodes[$langcode];

        }


        // Define full set of translatable strings in English

        $PHPMAILER_LANG = array(

            'authenticate' => 'SMTP Error: Could not authenticate.',

            'connect_host' => 'SMTP Error: Could not connect to SMTP host.',

            'data_not_accepted' => 'SMTP Error: data not accepted.',

            'empty_message' => 'Message body empty',

            'encoding' => 'Unknown encoding: ',

            'execute' => 'Could not execute: ',

            'file_access' => 'Could not access file: ',

            'file_open' => 'File Error: Could not open file: ',

            'from_failed' => 'The following From address failed: ',

            'instantiate' => 'Could not instantiate mail function.',

            'invalid_address' => 'Invalid address: ',

            'mailer_not_supported' => ' mailer is not supported.',

            'provide_address' => 'You must provide at least one recipient email address.',

            'recipients_failed' => 'SMTP Error: The following recipients failed: ',

            'signing' => 'Signing Error: ',

            'smtp_connect_failed' => 'SMTP connect() failed.',

            'smtp_error' => 'SMTP server error: ',

            'variable_set' => 'Cannot set or reset variable: ',

            'extension_missing' => 'Extension missing: '

        );

        if (empty($lang_path)) {

            // Calculate an absolute path so it can work if CWD is not here

            $lang_path = dirname(__FILE__). DIRECTORY_SEPARATOR . 'language'. DIRECTORY_SEPARATOR;

        }

        //Validate $langcode

        if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) {

            $langcode = 'en';

        }

        $foundlang = true;

        $lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php';

        // There is no English translation file

        if ($langcode != 'en') {

            // Make sure language file path is readable

            if (!self::isPermittedPath($lang_file) or !is_readable($lang_file)) {

                $foundlang = false;

            } else {

                // Overwrite language-specific strings.

                // This way we'll never have missing translation keys.

                $foundlang = include $lang_file;

            }

        }

        $this->language = $PHPMAILER_LANG;

        return (boolean)$foundlang; // Returns false if language not found

    }


    /**

     * Get the array of strings for the current language.

     * @return array

     */

    public function getTranslations()

    {

        return $this->language;

    }


    /**

     * Create recipient headers.

     * @access public

     * @param string $type

     * @param array $addr An array of recipient,

     * where each recipient is a 2-element indexed array with element 0 containing an address

     * and element 1 containing a name, like:

     * array(array('joe@example.com', 'Joe User'), array('zoe@example.com', 'Zoe User'))

     * @return string

     */

    public function addrAppend($type, $addr)

    {

        $addresses = array();

        foreach ($addr as $address) {

            $addresses[] = $this->addrFormat($address);

        }

        return $type . ': ' . implode(', ', $addresses) . $this->LE;

    }


    /**

     * Format an address for use in a message header.

     * @access public

     * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name

     *      like array('joe@example.com', 'Joe User')

     * @return string

     */

    public function addrFormat($addr)

    {

        if (empty($addr[1])) { // No name provided

            return $this->secureHeader($addr[0]);

        } else {

            return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . ' <' . $this->secureHeader(

                $addr[0]

            ) . '>';

        }

    }


    /**

     * Word-wrap message.

     * For use with mailers that do not automatically perform wrapping

     * and for quoted-printable encoded messages.

     * Original written by philippe.

     * @param string $message The message to wrap

     * @param integer $length The line length to wrap to

     * @param boolean $qp_mode Whether to run in Quoted-Printable mode

     * @access public

     * @return string

     */

    public function wrapText($message, $length, $qp_mode = false)

    {

        if ($qp_mode) {

            $soft_break = sprintf(' =%s', $this->LE);

        } else {

            $soft_break = $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');

        $lelen = strlen($this->LE);

        $crlflen = strlen(self::CRLF);


        $message = $this->fixEOL($message);

        //Remove a trailing line break

        if (substr($message, -$lelen) == $this->LE) {

            $message = substr($message, 0, -$lelen);

        }


        //Split message into lines

        $lines = explode($this->LE, $message);

        //Message will be rebuilt in here

        $message = '';

        foreach ($lines as $line) {

            $words = explode(' ', $line);

            $buf = '';

            $firstword = true;

            foreach ($words as $word) {

                if ($qp_mode and (strlen($word) > $length)) {

                    $space_left = $length - strlen($buf) - $crlflen;

                    if (!$firstword) {

                        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', self::CRLF);

                        } else {

                            $message .= $buf . $soft_break;

                        }

                        $buf = '';

                    }

                    while (strlen($word) > 0) {

                        if ($length <= 0) {

                            break;

                        }

                        $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', self::CRLF);

                        } else {

                            $buf = $part;

                        }

                    }

                } else {

                    $buf_o = $buf;

                    if (!$firstword) {

                        $buf .= ' ';

                    }

                    $buf .= $word;


                    if (strlen($buf) > $length and $buf_o != '') {

                        $message .= $buf_o . $soft_break;

                        $buf = $word;

                    }

                }

                $firstword = false;

            }

            $message .= $buf . self::CRLF;

        }


        return $message;

    }


    /**

     * Find the 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 integer $maxLength Find the last character boundary prior to this length

     * @return integer

     */

    public function utf8CharBoundary($encodedText, $maxLength)

    {

        $foundSplitPos = false;

        $lookBack = 3;

        while (!$foundSplitPos) {

            $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);

            $encodedCharPos = strpos($lastChunk, '=');

            if (false !== $encodedCharPos) {

                // 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

                    if ($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;

    }


    /**

     * Apply word wrapping to the message body.

     * Wraps the message body to the number of chars set in the WordWrap property.

     * You should only do this to plain-text bodies as wrapping HTML tags may break them.

     * This is called automatically by createBody(), so you don't need to call it yourself.

     * @access public

     * @return void

     */

    public function setWordWrap()

    {

        if ($this->WordWrap < 1) {

            return;

        }


        switch ($this->message_type) {

            case 'alt':

            case 'alt_inline':

            case 'alt_attach':

            case 'alt_inline_attach':

                $this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap);

                break;

            default:

                $this->Body = $this->wrapText($this->Body, $this->WordWrap);

                break;

        }

    }


    /**

     * Assemble message headers.

     * @access public

     * @return string The assembled headers

     */

    public function createHeader()

    {

        $result = '';


        $result .= $this->headerLine('Date', $this->MessageDate == '' ? self::rfcDate() : $this->MessageDate);


        // To be created automatically by mail()

        if ($this->SingleTo) {

            if ($this->Mailer != 'mail') {

                foreach ($this->to as $toaddr) {

                    $this->SingleToArray[] = $this->addrFormat($toaddr);

                }

            }

        } else {

            if (count($this->to) > 0) {

                if ($this->Mailer != 'mail') {

                    $result .= $this->addrAppend('To', $this->to);

                }

            } elseif (count($this->cc) == 0) {

                $result .= $this->headerLine('To', 'undisclosed-recipients:;');

            }

        }


        $result .= $this->addrAppend('From', array(array(trim($this->From), $this->FromName)));


        // sendmail and mail() extract Cc from the header before sending

        if (count($this->cc) > 0) {

            $result .= $this->addrAppend('Cc', $this->cc);

        }


        // sendmail and mail() extract Bcc from the header before sending

        if ((

                $this->Mailer == 'sendmail' or $this->Mailer == 'qmail' or $this->Mailer == 'mail'

            )

            and 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)));

        }


        // Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4

        // https://tools.ietf.org/html/rfc5322#section-3.6.4

        if ('' != $this->MessageID and preg_match('/^<.*@.*>$/', $this->MessageID)) {

            $this->lastMessageID = $this->MessageID;

        } else {

            $this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname());

        }

        $result .= $this->headerLine('Message-ID', $this->lastMessageID);

        if (!is_null($this->Priority)) {

            $result .= $this->headerLine('X-Priority', $this->Priority);

        }

        if ($this->XMailer == '') {

            $result .= $this->headerLine(

                'X-Mailer',

                'PHPMailer ' . $this->Version . ' (https://github.com/PHPMailer/PHPMailer)'

            );

        } else {

            $myXmailer = trim($this->XMailer);

            if ($myXmailer) {

                $result .= $this->headerLine('X-Mailer', $myXmailer);

            }

        }


        if ($this->ConfirmReadingTo != '') {

            $result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>');

        }


        // Add custom headers

        foreach ($this->CustomHeader as $header) {

            $result .= $this->headerLine(

                trim($header[0]),

                $this->encodeHeader(trim($header[1]))

            );

        }

        if (!$this->sign_key_file) {

            $result .= $this->headerLine('MIME-Version', '1.0');

            $result .= $this->getMailMIME();

        }


        return $result;

    }


    /**

     * Get the message MIME type headers.

     * @access public

     * @return string

     */

    public function getMailMIME()

    {

        $result = '';

        $ismultipart = true;

        switch ($this->message_type) {

            case 'inline':

                $result .= $this->headerLine('Content-Type', 'multipart/related;');

                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');

                break;

            case 'attach':

            case 'inline_attach':

            case 'alt_attach':

            case 'alt_inline_attach':

                $result .= $this->headerLine('Content-Type', 'multipart/mixed;');

                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');

                break;

            case 'alt':

            case 'alt_inline':

                $result .= $this->headerLine('Content-Type', 'multipart/alternative;');

                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');

                break;

            default:

                // Catches case 'plain': and case '':

                $result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet);

                $ismultipart = false;

                break;

        }

        // RFC1341 part 5 says 7bit is assumed if not specified

        if ($this->Encoding != '7bit') {

            // RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE

            if ($ismultipart) {

                if ($this->Encoding == '8bit') {

                    $result .= $this->headerLine('Content-Transfer-Encoding', '8bit');

                }

                // The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible

            } else {

                $result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding);

            }

        }


        if ($this->Mailer != 'mail') {

            $result .= $this->LE;

        }


        return $result;

    }


    /**

     * Returns the whole MIME message.

     * Includes complete headers and body.

     * Only valid post preSend().

     * @see PHPMailer::preSend()

     * @access public

     * @return string

     */

    public function getSentMIMEMessage()

    {

        return rtrim($this->MIMEHeader . $this->mailHeader, "\n\r") . self::CRLF . self::CRLF . $this->MIMEBody;

    }


    /**

     * Create unique ID

     * @return string

     */

    protected function generateId() {

        return md5(uniqid(time()));

    }


    /**

     * Assemble the message body.

     * Returns an empty string on failure.

     * @access public

     * @throws phpmailerException

     * @return string The assembled message body

     */

    public function createBody()

    {

        $body = '';

        //Create unique IDs and preset boundaries

        $this->uniqueid = $this->generateId();

        $this->boundary[1] = 'b1_' . $this->uniqueid;

        $this->boundary[2] = 'b2_' . $this->uniqueid;

        $this->boundary[3] = 'b3_' . $this->uniqueid;


        if ($this->sign_key_file) {

            $body .= $this->getMailMIME() . $this->LE;

        }


        $this->setWordWrap();


        $bodyEncoding = $this->Encoding;

        $bodyCharSet = $this->CharSet;

        //Can we do a 7-bit downgrade?

        if ($bodyEncoding == '8bit' and !$this->has8bitChars($this->Body)) {

            $bodyEncoding = '7bit';

            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit

            $bodyCharSet = 'us-ascii';

        }

        //If lines are too long, and we're not already using an encoding that will shorten them,

        //change to quoted-printable transfer encoding for the body part only

        if ('base64' != $this->Encoding and self::hasLineLongerThanMax($this->Body)) {

            $bodyEncoding = 'quoted-printable';

        }


        $altBodyEncoding = $this->Encoding;

        $altBodyCharSet = $this->CharSet;

        //Can we do a 7-bit downgrade?

        if ($altBodyEncoding == '8bit' and !$this->has8bitChars($this->AltBody)) {

            $altBodyEncoding = '7bit';

            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit

            $altBodyCharSet = 'us-ascii';

        }

        //If lines are too long, and we're not already using an encoding that will shorten them,

        //change to quoted-printable transfer encoding for the alt body part only

        if ('base64' != $altBodyEncoding and self::hasLineLongerThanMax($this->AltBody)) {

            $altBodyEncoding = 'quoted-printable';

        }

        //Use this as a preamble in all multipart message types

        $mimepre = "This is a multi-part message in MIME format." . $this->LE . $this->LE;

        switch ($this->message_type) {

            case 'inline':

                $body .= $mimepre;

                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->attachAll('inline', $this->boundary[1]);

                break;

            case 'attach':

                $body .= $mimepre;

                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->attachAll('attachment', $this->boundary[1]);

                break;

            case 'inline_attach':

                $body .= $mimepre;

                $body .= $this->textLine('--' . $this->boundary[1]);

                $body .= $this->headerLine('Content-Type', 'multipart/related;');

                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');

                $body .= $this->LE;

                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->attachAll('inline', $this->boundary[2]);

                $body .= $this->LE;

                $body .= $this->attachAll('attachment', $this->boundary[1]);

                break;

            case 'alt':

                $body .= $mimepre;

                $body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);

                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, 'text/html', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                if (!empty($this->Ical)) {

                    $body .= $this->getBoundary($this->boundary[1], '', 'text/calendar; method=REQUEST', '');

                    $body .= $this->encodeString($this->Ical, $this->Encoding);

                    $body .= $this->LE . $this->LE;

                }

                $body .= $this->endBoundary($this->boundary[1]);

                break;

            case 'alt_inline':

                $body .= $mimepre;

                $body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);

                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->textLine('--' . $this->boundary[1]);

                $body .= $this->headerLine('Content-Type', 'multipart/related;');

                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');

                $body .= $this->LE;

                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->attachAll('inline', $this->boundary[2]);

                $body .= $this->LE;

                $body .= $this->endBoundary($this->boundary[1]);

                break;

            case 'alt_attach':

                $body .= $mimepre;

                $body .= $this->textLine('--' . $this->boundary[1]);

                $body .= $this->headerLine('Content-Type', 'multipart/alternative;');

                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');

                $body .= $this->LE;

                $body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);

                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->endBoundary($this->boundary[2]);

                $body .= $this->LE;

                $body .= $this->attachAll('attachment', $this->boundary[1]);

                break;

            case 'alt_inline_attach':

                $body .= $mimepre;

                $body .= $this->textLine('--' . $this->boundary[1]);

                $body .= $this->headerLine('Content-Type', 'multipart/alternative;');

                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');

                $body .= $this->LE;

                $body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);

                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->textLine('--' . $this->boundary[2]);

                $body .= $this->headerLine('Content-Type', 'multipart/related;');

                $body .= $this->textLine("\tboundary=\"" . $this->boundary[3] . '"');

                $body .= $this->LE;

                $body .= $this->getBoundary($this->boundary[3], $bodyCharSet, 'text/html', $bodyEncoding);

                $body .= $this->encodeString($this->Body, $bodyEncoding);

                $body .= $this->LE . $this->LE;

                $body .= $this->attachAll('inline', $this->boundary[3]);

                $body .= $this->LE;

                $body .= $this->endBoundary($this->boundary[2]);

                $body .= $this->LE;

                $body .= $this->attachAll('attachment', $this->boundary[1]);

                break;

            default:

                // Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types

                //Reset the `Encoding` property in case we changed it for line length reasons

                $this->Encoding = $bodyEncoding;

                $body .= $this->encodeString($this->Body, $this->Encoding);

                break;

        }


        if ($this->isError()) {

            $body = '';

        } elseif ($this->sign_key_file) {

            try {

                if (!defined('PKCS7_TEXT')) {

                    throw new phpmailerException($this->lang('extension_missing') . 'openssl');

                }

                // @TODO would be nice to use php://temp streams here, but need to wrap for PHP < 5.1

                $file = tempnam(sys_get_temp_dir(), 'mail');

                if (false === file_put_contents($file, $body)) {

                    throw new phpmailerException($this->lang('signing') . ' Could not write temp file');

                }

                $signed = tempnam(sys_get_temp_dir(), 'signed');

                //Workaround for PHP bug https://bugs.php.net/bug.php?id=69197

                if (empty($this->sign_extracerts_file)) {

                    $sign = @openssl_pkcs7_sign(

                        $file,

                        $signed,

                        'file://' . realpath($this->sign_cert_file),

                        array('file://' . realpath($this->sign_key_file), $this->sign_key_pass),

                        null

                    );

                } else {

                    $sign = @openssl_pkcs7_sign(

                        $file,

                        $signed,

                        'file://' . realpath($this->sign_cert_file),

                        array('file://' . realpath($this->sign_key_file), $this->sign_key_pass),

                        null,

                        PKCS7_DETACHED,

                        $this->sign_extracerts_file

                    );

                }

                if ($sign) {

                    @unlink($file);

                    $body = file_get_contents($signed);

                    @unlink($signed);

                    //The message returned by openssl contains both headers and body, so need to split them up

                    $parts = explode("\n\n", $body, 2);

                    $this->MIMEHeader .= $parts[0] . $this->LE . $this->LE;

                    $body = $parts[1];

                } else {

                    @unlink($file);

                    @unlink($signed);

                    throw new phpmailerException($this->lang('signing') . openssl_error_string());

                }

            } catch (phpmailerException $exc) {

                $body = '';

                if ($this->exceptions) {

                    throw $exc;

                }

            }

        }

        return $body;

    }


    /**

     * Return the start of a message boundary.

     * @access protected

     * @param string $boundary

     * @param string $charSet

     * @param string $contentType

     * @param string $encoding

     * @return string

     */

    protected 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;

        // RFC1341 part 5 says 7bit is assumed if not specified

        if ($encoding != '7bit') {

            $result .= $this->headerLine('Content-Transfer-Encoding', $encoding);

        }

        $result .= $this->LE;


        return $result;

    }


    /**

     * Return the end of a message boundary.

     * @access protected

     * @param string $boundary

     * @return string

     */

    protected function endBoundary($boundary)

    {

        return $this->LE . '--' . $boundary . '--' . $this->LE;

    }


    /**

     * Set the message type.

     * PHPMailer only supports some preset message types, not arbitrary MIME structures.

     * @access protected

     * @return void

     */

    protected function setMessageType()

    {

        $type = array();

        if ($this->alternativeExists()) {

            $type[] = 'alt';

        }

        if ($this->inlineImageExists()) {

            $type[] = 'inline';

        }

        if ($this->attachmentExists()) {

            $type[] = 'attach';

        }

        $this->message_type = implode('_', $type);

        if ($this->message_type == '') {

            //The 'plain' message_type refers to the message having a single body element, not that it is plain-text

            $this->message_type = 'plain';

        }

    }


    /**

     * Format a header line.

     * @access public

     * @param string $name

     * @param string $value

     * @return string

     */

    public function headerLine($name, $value)

    {

        return $name . ': ' . $value . $this->LE;

    }


    /**

     * Return a formatted mail line.

     * @access public

     * @param string $value

     * @return string

     */

    public function textLine($value)

    {

        return $value . $this->LE;

    }


    /**

     * Add an attachment from a path on the filesystem.

     * Never use a user-supplied path to a file!

     * Returns false if the file could not be found or read.

     * Explicitly *does not* support passing URLs; PHPMailer is not an HTTP client.

     * If you need to do that, fetch the resource yourself and pass it in via a local file or string.

     * @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.

     * @param string $disposition Disposition to use

     * @throws phpmailerException

     * @return boolean

     */

    public function addAttachment($path, $name = '', $encoding = 'base64', $type = '', $disposition = 'attachment')

    {

        try {

            if (!self::isPermittedPath($path) or !@is_file($path)) {

                throw new phpmailerException($this->lang('file_access') . $path, self::STOP_CONTINUE);

            }


            // If a MIME type is not specified, try to work it out from the file name

            if ($type == '') {

                $type = self::filenameToType($path);

            }


            $filename = basename($path);

            if ($name == '') {

                $name = $filename;

            }


            $this->attachment[] = array(

                0 => $path,

                1 => $filename,

                2 => $name,

                3 => $encoding,

                4 => $type,

                5 => false, // isStringAttachment

                6 => $disposition,

                7 => 0

            );


        } catch (phpmailerException $exc) {

            $this->setError($exc->getMessage());

            $this->edebug($exc->getMessage());

            if ($this->exceptions) {

                throw $exc;

            }

            return false;

        }

        return true;

    }


    /**

     * Return the array of attachments.

     * @return array

     */

    public function getAttachments()

    {

        return $this->attachment;

    }


    /**

     * Attach all file, string, and binary attachments to the message.

     * Returns an empty string on failure.

     * @access protected

     * @param string $disposition_type

     * @param string $boundary

     * @return string

     */

    protected function attachAll($disposition_type, $boundary)

    {

        // Return text of body

        $mime = array();

        $cidUniq = array();

        $incl = array();


        // Add all attachments

        foreach ($this->attachment as $attachment) {

            // Check if it is a valid disposition_filter

            if ($attachment[6] == $disposition_type) {

                // Check for string attachment

                $string = '';

                $path = '';

                $bString = $attachment[5];

                if ($bString) {

                    $string = $attachment[0];

                } else {

                    $path = $attachment[0];

                }


                $inclhash = md5(serialize($attachment));

                if (in_array($inclhash, $incl)) {

                    continue;

                }

                $incl[] = $inclhash;

                $name = $attachment[2];

                $encoding = $attachment[3];

                $type = $attachment[4];

                $disposition = $attachment[6];

                $cid = $attachment[7];

                if ($disposition == 'inline' && array_key_exists($cid, $cidUniq)) {

                    continue;

                }

                $cidUniq[$cid] = true;


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

                //Only include a filename property if we have one

                if (!empty($name)) {

                    $mime[] = sprintf(

                        'Content-Type: %s; name="%s"%s',

                        $type,

                        $this->encodeHeader($this->secureHeader($name)),

                        $this->LE

                    );

                } else {

                    $mime[] = sprintf(

                        'Content-Type: %s%s',

                        $type,

                        $this->LE

                    );

                }

                // RFC1341 part 5 says 7bit is assumed if not specified

                if ($encoding != '7bit') {

                    $mime[] = sprintf('Content-Transfer-Encoding: %s%s', $encoding, $this->LE);

                }


                if ($disposition == 'inline') {

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

                }


                // If a filename contains any of these chars, it should be quoted,

                // but not otherwise: RFC2183 & RFC2045 5.1

                // Fixes a warning in IETF's msglint MIME checker

                // Allow for bypassing the Content-Disposition header totally

                if (!(empty($disposition))) {

                    $encoded_name = $this->encodeHeader($this->secureHeader($name));

                    if (preg_match('/[ \(\)<>@,;:\\"\/\[\]\?=]/', $encoded_name)) {

                        $mime[] = sprintf(

                            'Content-Disposition: %s; filename="%s"%s',

                            $disposition,

                            $encoded_name,

                            $this->LE . $this->LE

                        );

                    } else {

                        if (!empty($encoded_name)) {

                            $mime[] = sprintf(

                                'Content-Disposition: %s; filename=%s%s',

                                $disposition,

                                $encoded_name,

                                $this->LE . $this->LE

                            );

                        } else {

                            $mime[] = sprintf(

                                'Content-Disposition: %s%s',

                                $disposition,

                                $this->LE . $this->LE

                            );

                        }

                    }

                } else {

                    $mime[] = $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', $boundary, $this->LE);


        return implode('', $mime);

    }


    /**

     * Encode a file attachment in requested format.

     * Returns an empty string on failure.

     * @param string $path The full path to the file

     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'

     * @throws phpmailerException

     * @access protected

     * @return string

     */

    protected function encodeFile($path, $encoding = 'base64')

    {

        try {

            if (!self::isPermittedPath($path) or !file_exists($path)) {

                throw new phpmailerException($this->lang('file_open') . $path, self::STOP_CONTINUE);

            }

            $magic_quotes = false;

            if( version_compare(PHP_VERSION, '7.4.0', '<') ) {

                $magic_quotes = get_magic_quotes_runtime();

            }

            if ($magic_quotes) {

                if (version_compare(PHP_VERSION, '5.3.0', '<')) {

                    set_magic_quotes_runtime(false);

                } else {

                    //Doesn't exist in PHP 5.4, but we don't need to check because

                    //get_magic_quotes_runtime always returns false in 5.4+

                    //so it will never get here

                    ini_set('magic_quotes_runtime', false);

                }

            }

            $file_buffer = file_get_contents($path);

            $file_buffer = $this->encodeString($file_buffer, $encoding);

            if ($magic_quotes) {

                if (version_compare(PHP_VERSION, '5.3.0', '<')) {

                    set_magic_quotes_runtime($magic_quotes);

                } else {

                    ini_set('magic_quotes_runtime', $magic_quotes);

                }

            }

            return $file_buffer;

        } catch (Exception $exc) {

            $this->setError($exc->getMessage());

            return '';

        }

    }


    /**

     * Encode a string in requested format.

     * Returns an empty string on failure.

     * @param string $str The text to encode

     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'

     * @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);

                // Make sure it ends with a line break

                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 optimally.

     * Picks shortest of Q, B, quoted-printable or none.

     * @access public

     * @param string $str

     * @param string $position

     * @return string

     */

    public function encodeHeader($str, $position = 'text')

    {

        $matchcount = 0;

        switch (strtolower($position)) {

            case 'phrase':

                if (!preg_match('/[\200-\377]/', $str)) {

                    // Can't use addslashes as we don't know the value of magic_quotes_sybase

                    $encoded = addcslashes($str, "\0..\37\177\\\"");

                    if (($str == $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) {

                        return ($encoded);

                    } else {

                        return ("\"$encoded\"");

                    }

                }

                $matchcount = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);

                break;

            /** @noinspection PhpMissingBreakStatementInspection */

            case 'comment':

                $matchcount = preg_match_all('/[()"]/', $str, $matches);

                // Intentional fall-through

            case 'text':

            default:

                $matchcount += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);

                break;

        }


        //There are no chars that need encoding

        if ($matchcount == 0) {

            return ($str);

        }


        $maxlen = 75 - 7 - strlen($this->CharSet);

        // Try to select the encoding which should produce the shortest output

        if ($matchcount > strlen($str) / 3) {

            // More than a third of the content will need encoding, so B encoding will be most efficient

            $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, "\n");

            } 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);

            $encoded = str_replace('=' . self::CRLF, "\n", trim($encoded));

        }


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

        $encoded = trim(str_replace("\n", $this->LE, $encoded));


        return $encoded;

    }


    /**

     * Check if a string contains multi-byte characters.

     * @access public

     * @param string $str multi-byte text to wrap encode

     * @return boolean

     */

    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;

        }

    }


    /**

     * Does a string contain any 8-bit chars (in any charset)?

     * @param string $text

     * @return boolean

     */

    public function has8bitChars($text)

    {

        return (boolean)preg_match('/[\x80-\xFF]/', $text);

    }


    /**

     * Encode and wrap long multibyte strings for mail headers

     * without breaking lines within a character.

     * Adapted from a function by paravoid

     * @link http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283

     * @access public

     * @param string $str multi-byte text to wrap encode

     * @param string $linebreak string to use as linefeed/end-of-line

     * @return string

     */

    public function base64EncodeWrapMB($str, $linebreak = null)

    {

        $start = '=?' . $this->CharSet . '?B?';

        $end = '?=';

        $encoded = '';

        if ($linebreak === null) {

            $linebreak = $this->LE;

        }


        $mb_length = mb_strlen($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

        $avgLength = floor($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 . $linebreak;

        }


        // Chomp the last linefeed

        $encoded = substr($encoded, 0, -strlen($linebreak));

        return $encoded;

    }


    /**

     * Encode a string in quoted-printable format.

     * According to RFC2045 section 6.7.

     * @access public

     * @param string $string The text to encode

     * @param integer $line_max Number of chars allowed on a line before wrapping

     * @return string

     * @link http://www.php.net/manual/en/function.quoted-printable-decode.php#89417 Adapted from this comment

     */

    public function encodeQP($string, $line_max = 76)

    {

        // Use native function if it's available (>= PHP5.3)

        if (function_exists('quoted_printable_encode')) {

            return quoted_printable_encode($string);

        }

        // Fall back to a pure PHP implementation

        $string = str_replace(

            array('%20', '%0D%0A.', '%0D%0A', '%'),

            array(' ', "\r\n=2E", "\r\n", '='),

            rawurlencode($string)

        );

        return preg_replace('/[^\r\n]{' . ($line_max - 3) . '}[^=\r\n]{2}/', "$0=\r\n", $string);

    }


    /**

     * Backward compatibility wrapper for an old QP encoding function that was removed.

     * @see PHPMailer::encodeQP()

     * @access public

     * @param string $string

     * @param integer $line_max

     * @param boolean $space_conv

     * @return string

     * @deprecated Use encodeQP instead.

     */

    public function encodeQPphp(

        $string,

        $line_max = 76,

        /** @noinspection PhpUnusedParameterInspection */ $space_conv = false

    ) {

        return $this->encodeQP($string, $line_max);

    }


    /**

     * Encode a string using Q encoding.

     * @link http://tools.ietf.org/html/rfc2047

     * @param string $str the text to encode

     * @param string $position Where the text is going to be used, see the RFC for what that means

     * @access public

     * @return string

     */

    public function encodeQ($str, $position = 'text')

    {

        // There should not be any EOL in the string

        $pattern = '';

        $encoded = str_replace(array("\r", "\n"), '', $str);

        switch (strtolower($position)) {

            case 'phrase':

                // RFC 2047 section 5.3

                $pattern = '^A-Za-z0-9!*+\/ -';

                break;

            /** @noinspection PhpMissingBreakStatementInspection */

            case 'comment':

                // RFC 2047 section 5.2

                $pattern = '\(\)"';

                // intentional fall-through

                // for this reason we build the $pattern without including delimiters and []

            case 'text':

            default:

                // RFC 2047 section 5.1

                // Replace every high ascii, control, =, ? and _ characters

                $pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern;

                break;

        }

        $matches = array();

        if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) {

            // If the string contains an '=', make sure it's the first thing we replace

            // so as to avoid double-encoding

            $eqkey = array_search('=', $matches[0]);

            if (false !== $eqkey) {

                unset($matches[0][$eqkey]);

                array_unshift($matches[0], '=');

            }

            foreach (array_unique($matches[0]) as $char) {

                $encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded);

            }

        }

        // Replace every spaces to _ (more readable than =20)

        return str_replace(' ', '_', $encoded);

    }


    /**

     * Add a string or binary attachment (non-filesystem).

     * 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.

     * @param string $disposition Disposition to use

     * @return void

     */

    public function addStringAttachment(

        $string,

        $filename,

        $encoding = 'base64',

        $type = '',

        $disposition = 'attachment'

    ) {

        // If a MIME type is not specified, try to work it out from the file name

        if ($type == '') {

            $type = self::filenameToType($filename);

        }

        // Append to $attachment array

        $this->attachment[] = array(

            0 => $string,

            1 => $filename,

            2 => basename($filename),

            3 => $encoding,

            4 => $type,

            5 => true, // isStringAttachment

            6 => $disposition,

            7 => 0

        );

    }


    /**

     * Add an embedded (inline) attachment from a file.

     * This can include images, sounds, and just about any other document type.

     * These differ from 'regular' attachments in that they are intended to be

     * displayed inline with the message, not just attached for download.

     * This is used in HTML messages that embed the images

     * the HTML refers to using the $cid value.

     * Never use a user-supplied path to a file!

     * @param string $path Path to the attachment.

     * @param string $cid Content ID of the attachment; Use this to reference

     *        the content when using an embedded image in HTML.

     * @param string $name Overrides the attachment name.

     * @param string $encoding File encoding (see $Encoding).

     * @param string $type File MIME type.

     * @param string $disposition Disposition to use

     * @return boolean True on successfully adding an attachment

     */

    public function addEmbeddedImage($path, $cid, $name = '', $encoding = 'base64', $type = '', $disposition = 'inline')

    {

        if (!self::isPermittedPath($path) or !@is_file($path)) {

            $this->setError($this->lang('file_access') . $path);

            return false;

        }


        // If a MIME type is not specified, try to work it out from the file name

        if ($type == '') {

            $type = self::filenameToType($path);

        }


        $filename = basename($path);

        if ($name == '') {

            $name = $filename;

        }


        // Append to $attachment array

        $this->attachment[] = array(

            0 => $path,

            1 => $filename,

            2 => $name,

            3 => $encoding,

            4 => $type,

            5 => false, // isStringAttachment

            6 => $disposition,

            7 => $cid

        );

        return true;

    }


    /**

     * Add an embedded stringified attachment.

     * This can include images, sounds, and just about any other document type.

     * Be sure to set the $type to an image type for images:

     * JPEG images use 'image/jpeg', GIF uses 'image/gif', PNG uses 'image/png'.

     * @param string $string The attachment binary data.

     * @param string $cid Content ID of the attachment; Use this to reference

     *        the content when using an embedded image in HTML.

     * @param string $name

     * @param string $encoding File encoding (see $Encoding).

     * @param string $type MIME type.

     * @param string $disposition Disposition to use

     * @return boolean True on successfully adding an attachment

     */

    public function addStringEmbeddedImage(

        $string,

        $cid,

        $name = '',

        $encoding = 'base64',

        $type = '',

        $disposition = 'inline'

    ) {

        // If a MIME type is not specified, try to work it out from the name

        if ($type == '' and !empty($name)) {

            $type = self::filenameToType($name);

        }


        // Append to $attachment array

        $this->attachment[] = array(

            0 => $string,

            1 => $name,

            2 => $name,

            3 => $encoding,

            4 => $type,

            5 => true, // isStringAttachment

            6 => $disposition,

            7 => $cid

        );

        return true;

    }


    /**

     * Check if an inline attachment is present.

     * @access public

     * @return boolean

     */

    public function inlineImageExists()

    {

        foreach ($this->attachment as $attachment) {

            if ($attachment[6] == 'inline') {

                return true;

            }

        }

        return false;

    }


    /**

     * Check if an attachment (non-inline) is present.

     * @return boolean

     */

    public function attachmentExists()

    {

        foreach ($this->attachment as $attachment) {

            if ($attachment[6] == 'attachment') {

                return true;

            }

        }

        return false;

    }


    /**

     * Check if this message has an alternative body set.

     * @return boolean

     */

    public function alternativeExists()

    {

        return !empty($this->AltBody);

    }


    /**

     * Clear queued addresses of given kind.

     * @access protected

     * @param string $kind 'to', 'cc', or 'bcc'

     * @return void

     */

    public function clearQueuedAddresses($kind)

    {

        $RecipientsQueue = $this->RecipientsQueue;

        foreach ($RecipientsQueue as $address => $params) {

            if ($params[0] == $kind) {

                unset($this->RecipientsQueue[$address]);

            }

        }

    }


    /**

     * Clear all To recipients.

     * @return void

     */

    public function clearAddresses()

    {

        foreach ($this->to as $to) {

            unset($this->all_recipients[strtolower($to[0])]);

        }

        $this->to = array();

        $this->clearQueuedAddresses('to');

    }


    /**

     * Clear all CC recipients.

     * @return void

     */

    public function clearCCs()

    {

        foreach ($this->cc as $cc) {

            unset($this->all_recipients[strtolower($cc[0])]);

        }

        $this->cc = array();

        $this->clearQueuedAddresses('cc');

    }


    /**

     * Clear all BCC recipients.

     * @return void

     */

    public function clearBCCs()

    {

        foreach ($this->bcc as $bcc) {

            unset($this->all_recipients[strtolower($bcc[0])]);

        }

        $this->bcc = array();

        $this->clearQueuedAddresses('bcc');

    }


    /**

     * Clear all ReplyTo recipients.

     * @return void

     */

    public function clearReplyTos()

    {

        $this->ReplyTo = array();

        $this->ReplyToQueue = array();

    }


    /**

     * Clear all recipient types.

     * @return void

     */

    public function clearAllRecipients()

    {

        $this->to = array();

        $this->cc = array();

        $this->bcc = array();

        $this->all_recipients = array();

        $this->RecipientsQueue = array();

    }


    /**

     * Clear all filesystem, string, and binary attachments.

     * @return void

     */

    public function clearAttachments()

    {

        $this->attachment = array();

    }


    /**

     * Clear all custom headers.

     * @return void

     */

    public function clearCustomHeaders()

    {

        $this->CustomHeader = array();

    }


    /**

     * Add an error message to the error container.

     * @access protected

     * @param string $msg

     * @return void

     */

    protected function setError($msg)

    {

        $this->error_count++;

        if ($this->Mailer == 'smtp' and !is_null($this->smtp)) {

            $lasterror = $this->smtp->getError();

            if (!empty($lasterror['error'])) {

                $msg .= $this->lang('smtp_error') . $lasterror['error'];

                if (!empty($lasterror['detail'])) {

                    $msg .= ' Detail: '. $lasterror['detail'];

                }

                if (!empty($lasterror['smtp_code'])) {

                    $msg .= ' SMTP code: ' . $lasterror['smtp_code'];

                }

                if (!empty($lasterror['smtp_code_ex'])) {

                    $msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex'];

                }

            }

        }

        $this->ErrorInfo = $msg;

    }


    /**

     * Return an RFC 822 formatted date.

     * @access public

     * @return string

     * @static

     */

    public static function rfcDate()

    {

        // Set the time zone to whatever the default is to avoid 500 errors

        // Will default to UTC if it's not set properly in php.ini

        date_default_timezone_set(@date_default_timezone_get());

        return date('D, j M Y H:i:s O');

    }


    /**

     * Get the server hostname.

     * Returns 'localhost.localdomain' if unknown.

     * @access protected

     * @return string

     */

    protected function serverHostname()

    {

        $result = 'localhost.localdomain';

        if (!empty($this->Hostname)) {

            $result = $this->Hostname;

        } elseif (isset($_SERVER) and array_key_exists('SERVER_NAME', $_SERVER) and !empty($_SERVER['SERVER_NAME'])) {

            $result = $_SERVER['SERVER_NAME'];

        } elseif (function_exists('gethostname') && gethostname() !== false) {

            $result = gethostname();

        } elseif (php_uname('n') !== false) {

            $result = php_uname('n');

        }

        return $result;

    }


    /**

     * Get an error message in the current language.

     * @access protected

     * @param string $key

     * @return string

     */

    protected function lang($key)

    {

        if (count($this->language) < 1) {

            $this->setLanguage('en'); // set the default language

        }


        if (array_key_exists($key, $this->language)) {

            if ($key == 'smtp_connect_failed') {

                //Include a link to troubleshooting docs on SMTP connection failure

                //this is by far the biggest cause of support questions

                //but it's usually not PHPMailer's fault.

                return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting';

            }

            return $this->language[$key];

        } else {

            //Return the key as a fallback

            return $key;

        }

    }


    /**

     * Check if an error occurred.

     * @access public

     * @return boolean True if an error did occur.

     */

    public function isError()

    {

        return ($this->error_count > 0);

    }


    /**

     * Ensure consistent line endings in a string.

     * Changes every end of line from CRLF, CR or LF to $this->LE.

     * @access public

     * @param string $str String to fixEOL

     * @return string

     */

    public function fixEOL($str)

    {

        // Normalise to \n

        $nstr = str_replace(array("\r\n", "\r"), "\n", $str);

        // Now convert LE as needed

        if ($this->LE !== "\n") {

            $nstr = str_replace("\n", $this->LE, $nstr);

        }

        return $nstr;

    }


    /**

     * Add a custom header.

     * $name value can be overloaded to contain

     * both header name and value (name:value)

     * @access public

     * @param string $name Custom header name

     * @param string $value Header value

     * @return void

     */

    public function addCustomHeader($name, $value = null)

    {

        if ($value === null) {

            // Value passed in as name:value

            $this->CustomHeader[] = explode(':', $name, 2);

        } else {

            $this->CustomHeader[] = array($name, $value);

        }

    }


    /**

     * Returns all custom headers.

     * @return array

     */

    public function getCustomHeaders()

    {

        return $this->CustomHeader;

    }


    /**

     * Create a message body from an HTML string.

     * Automatically inlines images and creates a plain-text version by converting the HTML,

     * overwriting any existing values in Body and AltBody.

     * Do not source $message content from user input!

     * $basedir is prepended when handling relative URLs, e.g. <img src="/images/a.png"> and must not be empty

     * will look for an image file in $basedir/images/a.png and convert it to inline.

     * If you don't provide a $basedir, relative paths will be left untouched (and thus probably break in email)

     * If you don't want to apply these transformations to your HTML, just set Body and AltBody directly.

     * @access public

     * @param string $message HTML message string

     * @param string $basedir Absolute path to a base directory to prepend to relative paths to images

     * @param boolean|callable $advanced Whether to use the internal HTML to text converter

     *    or your own custom converter @see PHPMailer::html2text()

     * @return string $message The transformed message Body

     */

    public function msgHTML($message, $basedir = '', $advanced = false)

    {

        preg_match_all('/(src|background)=["\'](.*)["\']/Ui', $message, $images);

        if (array_key_exists(2, $images)) {

            if (strlen($basedir) > 1 && substr($basedir, -1) != '/') {

                // Ensure $basedir has a trailing /

                $basedir .= '/';

            }

            foreach ($images[2] as $imgindex => $url) {

                // Convert data URIs into embedded images

                if (preg_match('#^data:(image[^;,]*)(;base64)?,#', $url, $match)) {

                    $data = substr($url, strpos($url, ','));

                    if ($match[2]) {

                        $data = base64_decode($data);

                    } else {

                        $data = rawurldecode($data);

                    }

                    $cid = md5($url) . '@phpmailer.0'; // RFC2392 S 2

                    if ($this->addStringEmbeddedImage($data, $cid, 'embed' . $imgindex, 'base64', $match[1])) {

                        $message = str_replace(

                            $images[0][$imgindex],

                            $images[1][$imgindex] . '="cid:' . $cid . '"',

                            $message

                        );

                    }

                    continue;

                }

                if (

                    // Only process relative URLs if a basedir is provided (i.e. no absolute local paths)

                    !empty($basedir)

                    // Ignore URLs containing parent dir traversal (..)

                    && (strpos($url, '..') === false)

                    // Do not change urls that are already inline images

                    && substr($url, 0, 4) !== 'cid:'

                    // Do not change absolute URLs, including anonymous protocol

                    && !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url)

                ) {

                    $filename = basename($url);

                    $directory = dirname($url);

                    if ($directory == '.') {

                        $directory = '';

                    }

                    $cid = md5($url) . '@phpmailer.0'; // RFC2392 S 2

                    if (strlen($directory) > 1 && substr($directory, -1) != '/') {

                        $directory .= '/';

                    }

                    if ($this->addEmbeddedImage(

                        $basedir . $directory . $filename,

                        $cid,

                        $filename,

                        'base64',

                        self::_mime_types((string)self::mb_pathinfo($filename, PATHINFO_EXTENSION))

                    )

                    ) {

                        $message = preg_replace(

                            '/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui',

                            $images[1][$imgindex] . '="cid:' . $cid . '"',

                            $message

                        );

                    }

                }

            }

        }

        $this->isHTML(true);

        // Convert all message body line breaks to CRLF, makes quoted-printable encoding work much better

        $this->Body = $this->normalizeBreaks($message);

        $this->AltBody = $this->normalizeBreaks($this->html2text($message, $advanced));

        if (!$this->alternativeExists()) {

            $this->AltBody = 'To view this email message, open it in a program that understands HTML!' .

                self::CRLF . self::CRLF;

        }

        return $this->Body;

    }


    /**

     * Convert an HTML string into plain text.

     * This is used by msgHTML().

     * Note - older versions of this function used a bundled advanced converter

     * which was been removed for license reasons in #232.

     * Example usage:

     * <code>

     * // Use default conversion

     * $plain = $mail->html2text($html);

     * // Use your own custom converter

     * $plain = $mail->html2text($html, function($html) {

     *     $converter = new MyHtml2text($html);

     *     return $converter->get_text();

     * });

     * </code>

     * @param string $html The HTML text to convert

     * @param boolean|callable $advanced Any boolean value to use the internal converter,

     *   or provide your own callable for custom conversion.

     * @return string

     */

    public function html2text($html, $advanced = false)

    {

        if (is_callable($advanced)) {

            return call_user_func($advanced, $html);

        }

        return html_entity_decode(

            trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))),

            ENT_QUOTES,

            $this->CharSet

        );

    }


    /**

     * Get the MIME type for a file extension.

     * @param string $ext File extension

     * @access public

     * @return string MIME type of file.

     * @static

     */

    public static function _mime_types($ext = '')

    {

        $mimes = array(

            'xl'    => 'application/excel',

            'js'    => 'application/javascript',

            'hqx'   => 'application/mac-binhex40',

            'cpt'   => 'application/mac-compactpro',

            'bin'   => 'application/macbinary',

            'doc'   => 'application/msword',

            'word'  => 'application/msword',

            'xlsx'  => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',

            'xltx'  => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',

            'potx'  => 'application/vnd.openxmlformats-officedocument.presentationml.template',

            'ppsx'  => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',

            'pptx'  => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',

            'sldx'  => 'application/vnd.openxmlformats-officedocument.presentationml.slide',

            'docx'  => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',

            'dotx'  => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',

            'xlam'  => 'application/vnd.ms-excel.addin.macroEnabled.12',

            'xlsb'  => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',

            'class' => 'application/octet-stream',

            'dll'   => 'application/octet-stream',

            'dms'   => 'application/octet-stream',

            'exe'   => 'application/octet-stream',

            'lha'   => 'application/octet-stream',

            'lzh'   => 'application/octet-stream',

            'psd'   => 'application/octet-stream',

            'sea'   => 'application/octet-stream',

            'so'    => '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',

            'php3'  => 'application/x-httpd-php',

            'php4'  => 'application/x-httpd-php',

            'php'   => 'application/x-httpd-php',

            'phtml' => 'application/x-httpd-php',

            'phps'  => 'application/x-httpd-php-source',

            'swf'   => 'application/x-shockwave-flash',

            'sit'   => 'application/x-stuffit',

            'tar'   => 'application/x-tar',

            'tgz'   => 'application/x-tar',

            'xht'   => 'application/xhtml+xml',

            'xhtml' => 'application/xhtml+xml',

            'zip'   => 'application/zip',

            'mid'   => 'audio/midi',

            'midi'  => 'audio/midi',

            'mp2'   => 'audio/mpeg',

            'mp3'   => 'audio/mpeg',

            'mpga'  => 'audio/mpeg',

            'aif'   => 'audio/x-aiff',

            'aifc'  => 'audio/x-aiff',

            'aiff'  => 'audio/x-aiff',

            'ram'   => 'audio/x-pn-realaudio',

            'rm'    => 'audio/x-pn-realaudio',

            'rpm'   => 'audio/x-pn-realaudio-plugin',

            'ra'    => 'audio/x-realaudio',

            'wav'   => 'audio/x-wav',

            'bmp'   => 'image/bmp',

            'gif'   => 'image/gif',

            'jpeg'  => 'image/jpeg',

            'jpe'   => 'image/jpeg',

            'jpg'   => 'image/jpeg',

            'png'   => 'image/png',

            'tiff'  => 'image/tiff',

            'tif'   => 'image/tiff',

            'eml'   => 'message/rfc822',

            'css'   => 'text/css',

            'html'  => 'text/html',

            'htm'   => 'text/html',

            'shtml' => 'text/html',

            'log'   => 'text/plain',

            'text'  => 'text/plain',

            'txt'   => 'text/plain',

            'rtx'   => 'text/richtext',

            'rtf'   => 'text/rtf',

            'vcf'   => 'text/vcard',

            'vcard' => 'text/vcard',

            'xml'   => 'text/xml',

            'xsl'   => 'text/xml',

            'mpeg'  => 'video/mpeg',

            'mpe'   => 'video/mpeg',

            'mpg'   => 'video/mpeg',

            'mov'   => 'video/quicktime',

            'qt'    => 'video/quicktime',

            'rv'    => 'video/vnd.rn-realvideo',

            'avi'   => 'video/x-msvideo',

            'movie' => 'video/x-sgi-movie'

        );

        if (array_key_exists(strtolower($ext), $mimes)) {

            return $mimes[strtolower($ext)];

        }

        return 'application/octet-stream';

    }


    /**

     * Map a file name to a MIME type.

     * Defaults to 'application/octet-stream', i.e.. arbitrary binary data.

     * @param string $filename A file name or full path, does not need to exist as a file

     * @return string

     * @static

     */

    public static function filenameToType($filename)

    {

        // In case the path is a URL, strip any query string before getting extension

        $qpos = strpos($filename, '?');

        if (false !== $qpos) {

            $filename = substr($filename, 0, $qpos);

        }

        $pathinfo = self::mb_pathinfo($filename);

        return self::_mime_types($pathinfo['extension']);

    }


    /**

     * Multi-byte-safe pathinfo replacement.

     * Drop-in replacement for pathinfo(), but multibyte-safe, cross-platform-safe, old-version-safe.

     * Works similarly to the one in PHP >= 5.2.0

     * @link http://www.php.net/manual/en/function.pathinfo.php#107461

     * @param string $path A filename or path, does not need to exist as a file

     * @param integer|string $options Either a PATHINFO_* constant,

     *      or a string name to return only the specified piece, allows 'filename' to work on PHP < 5.2

     * @return string|array

     * @static

     */

    public static function mb_pathinfo($path, $options = null)

    {

        $ret = array('dirname' => '', 'basename' => '', 'extension' => '', 'filename' => '');

        $pathinfo = array();

        if (preg_match('%^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^\.\\\\/]+?)|))[\\\\/\.]*$%im', $path, $pathinfo)) {

            if (array_key_exists(1, $pathinfo)) {

                $ret['dirname'] = $pathinfo[1];

            }

            if (array_key_exists(2, $pathinfo)) {

                $ret['basename'] = $pathinfo[2];

            }

            if (array_key_exists(5, $pathinfo)) {

                $ret['extension'] = $pathinfo[5];

            }

            if (array_key_exists(3, $pathinfo)) {

                $ret['filename'] = $pathinfo[3];

            }

        }

        switch ($options) {

            case PATHINFO_DIRNAME:

            case 'dirname':

                return $ret['dirname'];

            case PATHINFO_BASENAME:

            case 'basename':

                return $ret['basename'];

            case PATHINFO_EXTENSION:

            case 'extension':

                return $ret['extension'];

            case PATHINFO_FILENAME:

            case 'filename':

                return $ret['filename'];

            default:

                return $ret;

        }

    }


    /**

     * Set or reset instance properties.

     * You should avoid this function - it's more verbose, less efficient, more error-prone and

     * harder to debug than setting properties directly.

     * Usage Example:

     * `$mail->set('SMTPSecure', 'tls');`

     *   is the same as:

     * `$mail->SMTPSecure = 'tls';`

     * @access public

     * @param string $name The property name to set

     * @param mixed $value The value to set the property to

     * @return boolean

     * @TODO Should this not be using the __set() magic function?

     */

    public function set($name, $value = '')

    {

        if (property_exists($this, $name)) {

            $this->$name = $value;

            return true;

        } else {

            $this->setError($this->lang('variable_set') . $name);

            return false;

        }

    }


    /**

     * Strip newlines to prevent header injection.

     * @access public

     * @param string $str

     * @return string

     */

    public function secureHeader($str)

    {

        return trim(str_replace(array("\r", "\n"), '', $str));

    }


    /**

     * Normalize line breaks in a string.

     * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format.

     * Defaults to CRLF (for message bodies) and preserves consecutive breaks.

     * @param string $text

     * @param string $breaktype What kind of line break to use, defaults to CRLF

     * @return string

     * @access public

     * @static

     */

    public static function normalizeBreaks($text, $breaktype = "\r\n")

    {

        return preg_replace('/(\r\n|\r|\n)/ms', $breaktype, $text);

    }


    /**

     * Set the public and private key files and password for S/MIME signing.

     * @access public

     * @param string $cert_filename

     * @param string $key_filename

     * @param string $key_pass Password for private key

     * @param string $extracerts_filename Optional path to chain certificate

     */

    public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '')

    {

        $this->sign_cert_file = $cert_filename;

        $this->sign_key_file = $key_filename;

        $this->sign_key_pass = $key_pass;

        $this->sign_extracerts_file = $extracerts_filename;

    }


    /**

     * Quoted-Printable-encode a DKIM header.

     * @access public

     * @param string $txt

     * @return string

     */

    public function DKIM_QP($txt)

    {

        $line = '';

        for ($i = 0; $i < strlen($txt); $i++) {

            $ord = ord($txt[$i]);

            if (((0x21 <= $ord) && ($ord <= 0x3A)) || $ord == 0x3C || ((0x3E <= $ord) && ($ord <= 0x7E))) {

                $line .= $txt[$i];

            } else {

                $line .= '=' . sprintf('%02X', $ord);

            }

        }

        return $line;

    }


    /**

     * Generate a DKIM signature.

     * @access public

     * @param string $signHeader

     * @throws phpmailerException

     * @return string The DKIM signature value

     */

    public function DKIM_Sign($signHeader)

    {

        if (!defined('PKCS7_TEXT')) {

            if ($this->exceptions) {

                throw new phpmailerException($this->lang('extension_missing') . 'openssl');

            }

            return '';

        }

        $privKeyStr = !empty($this->DKIM_private_string) ? $this->DKIM_private_string : file_get_contents($this->DKIM_private);

        if ('' != $this->DKIM_passphrase) {

            $privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase);

        } else {

            $privKey = openssl_pkey_get_private($privKeyStr);

        }

        //Workaround for missing digest algorithms in old PHP & OpenSSL versions

        //@link http://stackoverflow.com/a/11117338/333340

        if (version_compare(PHP_VERSION, '5.3.0') >= 0 and

            in_array('sha256WithRSAEncryption', openssl_get_md_methods(true))) {

            if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) {

                openssl_pkey_free($privKey);

                return base64_encode($signature);

            }

        } else {

            $pinfo = openssl_pkey_get_details($privKey);

            $hash = hash('sha256', $signHeader);

            //'Magic' constant for SHA256 from RFC3447

            //@link https://tools.ietf.org/html/rfc3447#page-43

            $t = '3031300d060960864801650304020105000420' . $hash;

            $pslen = $pinfo['bits'] / 8 - (strlen($t) / 2 + 3);

            $eb = pack('H*', '0001' . str_repeat('FF', $pslen) . '00' . $t);


            if (openssl_private_encrypt($eb, $signature, $privKey, OPENSSL_NO_PADDING)) {

                openssl_pkey_free($privKey);

                return base64_encode($signature);

            }

        }

        openssl_pkey_free($privKey);

        return '';

    }


    /**

     * Generate a DKIM canonicalization header.

     * @access public

     * @param string $signHeader Header

     * @return string

     */

    public function DKIM_HeaderC($signHeader)

    {

        $signHeader = preg_replace('/\r\n\s+/', ' ', $signHeader);

        $lines = explode("\r\n", $signHeader);

        foreach ($lines as $key => $line) {

            list($heading, $value) = explode(':', $line, 2);

            $heading = strtolower($heading);

            $value = preg_replace('/\s{2,}/', ' ', $value); // Compress useless spaces

            $lines[$key] = $heading . ':' . trim($value); // Don't forget to remove WSP around the value

        }

        $signHeader = implode("\r\n", $lines);

        return $signHeader;

    }


    /**

     * Generate a DKIM canonicalization body.

     * @access public

     * @param string $body Message Body

     * @return string

     */

    public function DKIM_BodyC($body)

    {

        if ($body == '') {

            return "\r\n";

        }

        // stabilize line endings

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

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

        // END stabilize line endings

        while (substr($body, strlen($body) - 4, 4) == "\r\n\r\n") {

            $body = substr($body, 0, strlen($body) - 2);

        }

        return $body;

    }


    /**

     * Create the DKIM header and body in a new message header.

     * @access public

     * @param string $headers_line Header lines

     * @param string $subject Subject

     * @param string $body Body

     * @return string

     */

    public function DKIM_Add($headers_line, $subject, $body)

    {

        $DKIMsignatureType = 'rsa-sha256'; // Signature & hash algorithms

        $DKIMcanonicalization = 'relaxed/simple'; // Canonicalization of header/body

        $DKIMquery = 'dns/txt'; // Query method

        $DKIMtime = time(); // Signature Timestamp = seconds since 00:00:00 - Jan 1, 1970 (UTC time zone)

        $subject_header = "Subject: $subject";

        $headers = explode($this->LE, $headers_line);

        $from_header = '';

        $to_header = '';

        $date_header = '';

        $current = '';

        foreach ($headers as $header) {

            if (strpos($header, 'From:') === 0) {

                $from_header = $header;

                $current = 'from_header';

            } elseif (strpos($header, 'To:') === 0) {

                $to_header = $header;

                $current = 'to_header';

            } elseif (strpos($header, 'Date:') === 0) {

                $date_header = $header;

                $current = 'date_header';

            } else {

                if (!empty($$current) && strpos($header, ' =?') === 0) {

                    $$current .= $header;

                } else {

                    $current = '';

                }

            }

        }

        $from = str_replace('|', '=7C', $this->DKIM_QP($from_header));

        $to = str_replace('|', '=7C', $this->DKIM_QP($to_header));

        $date = str_replace('|', '=7C', $this->DKIM_QP($date_header));

        $subject = str_replace(

            '|',

            '=7C',

            $this->DKIM_QP($subject_header)

        ); // Copied header fields (dkim-quoted-printable)

        $body = $this->DKIM_BodyC($body);

        $DKIMlen = strlen($body); // Length of body

        $DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); // Base64 of packed binary SHA-256 hash of body

        if ('' == $this->DKIM_identity) {

            $ident = '';

        } else {

            $ident = ' i=' . $this->DKIM_identity . ';';

        }

        $dkimhdrs = 'DKIM-Signature: v=1; a=' .

            $DKIMsignatureType . '; q=' .

            $DKIMquery . '; l=' .

            $DKIMlen . '; s=' .

            $this->DKIM_selector .

            ";\r\n" .

            "\tt=" . $DKIMtime . '; c=' . $DKIMcanonicalization . ";\r\n" .

            "\th=From:To:Date:Subject;\r\n" .

            "\td=" . $this->DKIM_domain . ';' . $ident . "\r\n" .

            "\tz=$from\r\n" .

            "\t|$to\r\n" .

            "\t|$date\r\n" .

            "\t|$subject;\r\n" .

            "\tbh=" . $DKIMb64 . ";\r\n" .

            "\tb=";

        $toSign = $this->DKIM_HeaderC(

            $from_header . "\r\n" .

            $to_header . "\r\n" .

            $date_header . "\r\n" .

            $subject_header . "\r\n" .

            $dkimhdrs

        );

        $signed = $this->DKIM_Sign($toSign);

        return $dkimhdrs . $signed . "\r\n";

    }


    /**

     * Detect if a string contains a line longer than the maximum line length allowed.

     * @param string $str

     * @return boolean

     * @static

     */

    public static function hasLineLongerThanMax($str)

    {

        //+2 to include CRLF line break for a 1000 total

        return (boolean)preg_match('/^(.{'.(self::MAX_LINE_LENGTH + 2).',})/m', $str);

    }


    /**

     * Allows for public read access to 'to' property.

     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.

     * @access public

     * @return array

     */

    public function getToAddresses()

    {

        return $this->to;

    }


    /**

     * Allows for public read access to 'cc' property.

     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.

     * @access public

     * @return array

     */

    public function getCcAddresses()

    {

        return $this->cc;

    }


    /**

     * Allows for public read access to 'bcc' property.

     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.

     * @access public

     * @return array

     */

    public function getBccAddresses()

    {

        return $this->bcc;

    }


    /**

     * Allows for public read access to 'ReplyTo' property.

     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.

     * @access public

     * @return array

     */

    public function getReplyToAddresses()

    {

        return $this->ReplyTo;

    }


    /**

     * Allows for public read access to 'all_recipients' property.

     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.

     * @access public

     * @return array

     */

    public function getAllRecipientAddresses()

    {

        return $this->all_recipients;

    }


    /**

     * Perform a callback.

     * @param boolean $isSent

     * @param array $to

     * @param array $cc

     * @param array $bcc

     * @param string $subject

     * @param string $body

     * @param string $from

     */

    protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from)

    {

        if (!empty($this->action_function) && is_callable($this->action_function)) {

            $params = array($isSent, $to, $cc, $bcc, $subject, $body, $from);

            call_user_func_array($this->action_function, $params);

        }

    }

}


/**

 * PHPMailer exception handler

 * @package PHPMailer

 */

class phpmailerException extends Exception

{

    /**

     * Prettify error message output

     * @return string

     */

    public function errorMessage()

    {

        $errorMsg = '<strong>' . htmlspecialchars($this->getMessage()) . "</strong><br />\n";

        return $errorMsg;

    }

}