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<?php
/**
 * PHPMailer - PHP email creation and transport class.
 * PHP Version 5.
 *
 * @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.
 *
 * @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 = '5.2.22';

    /**
     * Email priority.
     * Options: null (default), 1 = High, 3 = Normal, 5 = low.
     * When null, the header is not set at all.
     *
     * @var int
     */
    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.
     *
     * @var string
     */
    protected $MIMEBody = '';

    /**
     * The complete compiled MIME message headers.
     *
     * @var string
     */
    protected $MIMEHeader = '';

    /**
     * Extra headers that createHeader() doesn't fold in.
     *
     * @var string
     */
    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 int
     */
    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 bool
     */
    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 int
     * @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 bool
     */
    public $SMTPAutoTLS = true;

    /**
     * Whether to use SMTP authentication.
     * Uses the Username and Password properties.
     *
     * @var bool
     *
     * @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 int
     */
    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 int
     *
     * @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 bool
     */
    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 bool
     */
    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 bool
     */
    public $do_verp = false;

    /**
     * Whether to allow sending messages with an empty body.
     *
     * @var bool
     */
    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
     *   string  $to            email address of the recipient
     *   string  $cc            cc email addresses
     *   string  $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
     */
    protected $smtp = null;

    /**
     * The array of 'to' names and addresses.
     *
     * @var array
     */
    protected $to = array();

    /**
     * The array of 'cc' names and addresses.
     *
     * @var array
     */
    protected $cc = array();

    /**
     * The array of 'bcc' names and addresses.
     *
     * @var array
     */
    protected $bcc = array();

    /**
     * The array of reply-to names and addresses.
     *
     * @var array
     */
    protected $ReplyTo = array();

    /**
     * An array of all kinds of addresses.
     * Includes all of $to, $cc, $bcc.
     *
     * @var array
     *
     * @see PHPMailer::$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 $bcc.
     * This array is used only for addresses with IDN.
     *
     * @var array
     *
     * @see PHPMailer::$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 $ReplyTo.
     * This array is used only for addresses with IDN.
     *
     * @var array
     *
     * @see PHPMailer::$ReplyTo
     */
    protected $ReplyToQueue = array();

    /**
     * The array of attachments.
     *
     * @var array
     */
    protected $attachment = array();

    /**
     * The array of custom headers.
     *
     * @var array
     */
    protected $CustomHeader = array();

    /**
     * The most recent Message-ID (including angular brackets).
     *
     * @var string
     */
    protected $lastMessageID = '';

    /**
     * The message's MIME type.
     *
     * @var string
     */
    protected $message_type = '';

    /**
     * The array of MIME boundary strings.
     *
     * @var array
     */
    protected $boundary = array();

    /**
     * The array of available languages.
     *
     * @var array
     */
    protected $language = array();

    /**
     * The number of errors encountered.
     *
     * @var int
     */
    protected $error_count = 0;

    /**
     * The S/MIME certificate file path.
     *
     * @var string
     */
    protected $sign_cert_file = '';

    /**
     * The S/MIME key file path.
     *
     * @var string
     */
    protected $sign_key_file = '';

    /**
     * The optional S/MIME extra certificates ("CA Chain") file path.
     *
     * @var string
     */
    protected $sign_extracerts_file = '';

    /**
     * The S/MIME password for the key.
     * Used only if the key is encrypted.
     *
     * @var string
     */
    protected $sign_key_pass = '';

    /**
     * Whether to throw exceptions for errors.
     *
     * @var bool
     */
    protected $exceptions = false;

    /**
     * Unique ID used for message ID and boundaries.
     *
     * @var string
     */
    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 int
     */
    const MAX_LINE_LENGTH = 998;

    /**
     * Constructor.
     *
     * @param bool $exceptions Should we throw external exceptions?
     */
    public function __construct($exceptions = null)
    {
        if ($exceptions !== null) {
            $this->exceptions = (bool) $exceptions;
        }
    }

    /**
     * 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 $params  Params
     *
     * @return bool
     */
    private function mailPassthru($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 bool $isHtml True for HTML mode
     */
    public function isHTML($isHtml = true)
    {
        if ($isHtml) {
            $this->ContentType = 'text/html';
        } else {
            $this->ContentType = 'text/plain';
        }
    }

    /**
     * Send messages using SMTP.
     */
    public function isSMTP()
    {
        $this->Mailer = 'smtp';
    }

    /**
     * Send messages using PHP's mail() function.
     */
    public function isMail()
    {
        $this->Mailer = 'mail';
    }

    /**
     * Send messages using $Sendmail.
     */
    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.
     */
    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 $name
     *
     * @return bool true on success, false if address already used or invalid in some way
     */
    public function addAddress($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 $name
     *
     * @return bool true on success, false if address already used or invalid in some way
     */
    public function addCC($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 $name
     *
     * @return bool true on success, false if address already used or invalid in some way
     */
    public function addBCC($address, $name = '')
    {
        return $this->addOrEnqueueAnAddress('bcc', $address, $name);
    }

    /**
     * Add a "Reply-To" address.
     *
     * @param string $address The email address to reply to
     * @param string $name
     *
     * @return bool true on success, false if address already used or invalid in some way
     */
    public function addReplyTo($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 $name
     *
     * @throws phpmailerException
     *
     * @return bool true on success, false if address already used or invalid in some way
     */
    protected function addOrEnqueueAnAddress($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 $name
     *
     * @throws phpmailerException
     *
     * @return bool true on success, false if address already used or invalid in some way
     */
    protected function addAnAddress($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 bool   $auto    Whether to also set the Sender address, defaults to true
     *
     * @throws phpmailerException
     *
     * @return bool
     */
    public function setFrom($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 bool
     * @static
     */
    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 (bool) 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 (bool) 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',
                    $address
                );
            case 'html5':
                /*
                 * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements.
                 * @link http://www.whatwg.org/specs/web-apps/current-work/#e-mail-state-(type=email)
                 */
                return (bool) preg_match(
                    '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[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($address) - 1;
            case 'php':
            default:
                return (bool) filter_var($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 $Mailer.
     *
     * @throws phpmailerException
     *
     * @return bool false on error - See the ErrorInfo property for details of the error
     */
    public function send()
    {
        try {
            if (!$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 bool
     */
    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($this->DKIM_domain)
                && !empty($this->DKIM_selector)
                && (!empty($this->DKIM_private_string)
                   || (!empty($this->DKIM_private) && 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 bool
     */
    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
     *
     * @return bool
     */
    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 $string The string to be validated
     *
     * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report
     *
     * @return bool
     */
    protected static function isShellSafe($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;
    }

    /**
     * Send mail using the PHP mail() function.
     *
     * @param string $header The message headers
     * @param string $body   The message body
     *
     * @link http://www.php.net/manual/en/book.mail.php
     *
     * @throws phpmailerException
     *
     * @return bool
     */
    protected function mailSend($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 $body   The message body
     *
     * @throws phpmailerException
     *
     * @uses \SMTP
     *
     * @return bool
     */
    protected function smtpSend($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 $options An array of options compatible with stream_context_create()
     *
     * @uses \SMTP
     *
     * @throws phpmailerException
     *
     * @return bool
     */
    public function smtpConnect($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) {
            $hostinfo = array();
            if (!preg_match('/^((ssl|tls):\/\/)*([a-zA-Z0-9\.-]*):?([0-9]*)$/', trim($hostentry), $hostinfo)) {
                // Not a valid host entry
                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 = (int) $hostinfo[4];
            if ($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.
     */
    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 $lang_path Path to the language file directory, with trailing separator (slash)
     *
     * @return bool
     */
    public function setLanguage($langcode = 'en', $lang_path = '')
    {
        // Backwards compatibility for renamed language codes
        $renamed_langcodes = array(
            'br' => 'pt_br',
            'cz' => 'cs',
            'dk' => 'da',
            'no' => 'nb',
            'se' => 'sv',
        );

        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 ($langcode != 'en') {
            // Make sure language file path is readable
            if (!is_readable($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 (bool) $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.
     *
     * @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.
     *
     * @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 int    $length  The line length to wrap to
     * @param bool   $qp_mode Whether to run in Quoted-Printable mode
     *
     * @return string
     */
    public function wrapText($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.
     *
     * @param string $encodedText utf-8 QP text
     * @param int    $maxLength   Find the last character boundary prior to this length
     *
     * @return int
     */
    public function utf8CharBoundary($encodedText, $maxLength)
    {
        $foundSplitPos = false;
        $lookBack = 3;
        while (!$foundSplitPos) {
            $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);
            $encodedCharPos = strpos($lastChunk, '=');
            if (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.
     */
    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.
     *
     * @return string The assembled headers
     */
    public function createHeader()
    {
        $result = '';

        if ($this->MessageDate == '') {
            $this->MessageDate = self::rfcDate();
        }
        $result .= $this->headerLine('Date', $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.
     *
     * @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()
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     */
    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.
     *
     * @param string $name
     * @param string $value
     *
     * @return string
     */
    public function headerLine($name, $value)
    {
        return $name.': '.$value.$this->LE;
    }

    /**
     * Return a formatted mail line.
     *
     * @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.
     *
     * @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 $disposition Disposition to use
     *
     * @throws phpmailerException
     *
     * @return bool
     */
    public function addAttachment($path, $name = '', $encoding = 'base64', $type = '', $disposition = 'attachment')
    {
        try {
            if (!@is_file($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.
     *
     * @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 $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
     *
     * @throws phpmailerException
     *
     * @return string
     */
    protected function encodeFile($path, $encoding = 'base64')
    {
        try {
            if (!is_readable($path)) {
                throw new phpmailerException($this->lang('file_open').$path, self::STOP_CONTINUE);
            }
            $magic_quotes = get_magic_quotes_runtime();
            if ($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 $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
     *
     * @return string
     */
    public function encodeString($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.
     *
     * @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.
     *
     * @param string $str multi-byte text to wrap encode
     *
     * @return bool
     */
    public function hasMultiBytes($str)
    {
        if (function_exists('mb_strlen')) {
            return strlen($str) > mb_strlen($str, $this->CharSet);
        } else { // Assume no multibytes (we can't handle without mbstring functions anyway)
            return false;
        }
    }

    /**
     * Does a string contain any 8-bit chars (in any charset)?
     *
     * @param string $text
     *
     * @return bool
     */
    public function has8bitChars($text)
    {
        return (bool) 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
     *
     * @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.
     *
     * @param string $string   The text to encode
     * @param int    $line_max Number of chars allowed on a line before wrapping
     *
     * @return string
     *
     * @link http://www.php.net/manual/en/function.quoted-printable-decode.php#89417 Adapted from this comment
     */
    public function encodeQP($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()
     *
     * @param string $string
     * @param int    $line_max
     * @param bool   $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 $position Where the text is going to be used, see the RFC for what that means
     *
     * @return string
     */
    public function encodeQ($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
     */
    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 $disposition Disposition to use
     *
     * @return bool True on successfully adding an attachment
     */
    public function addEmbeddedImage($path, $cid, $name = '', $encoding = 'base64', $type = '', $disposition = 'inline')
    {
        if (!@is_file($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 bool 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.
     *
     * @return bool
     */
    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 bool
     */
    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 bool
     */
    public function alternativeExists()
    {
        return !empty($this->AltBody);
    }

    /**
     * Clear queued addresses of given kind.
     *
     * @param string $kind 'to', 'cc', or 'bcc'
     */
    public function clearQueuedAddresses($kind)
    {
        $RecipientsQueue = $this->RecipientsQueue;
        foreach ($RecipientsQueue as $address => $params) {
            if ($params[0] == $kind) {
                unset($this->RecipientsQueue[$address]);
            }
        }
    }

    /**
     * Clear all To recipients.
     */
    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.
     */
    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.
     */
    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.
     */
    public function clearReplyTos()
    {
        $this->ReplyTo = array();
        $this->ReplyToQueue = array();
    }

    /**
     * Clear all recipient types.
     */
    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.
     */
    public function clearAttachments()
    {
        $this->attachment = array();
    }

    /**
     * Clear all custom headers.
     */
    public function clearCustomHeaders()
    {
        $this->CustomHeader = array();
    }

    /**
     * Add an error message to the error container.
     *
     * @param string $msg
     */
    protected function setError($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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @return bool 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.
     *
     * @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).
     *
     * @param string $name  Custom header name
     * @param string $value Header value
     */
    public function addCustomHeader($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.
     *
     * @param string        $message  HTML message string
     * @param string        $basedir  Absolute path to a base directory to prepend to relative paths to images
     * @param bool|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 bool|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 $ext File extension
     *
     * @return string MIME type of file
     * @static
     */
    public static function _mime_types($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 int|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';`.
     *
     * @param string $name  The property name to set
     * @param mixed  $value The value to set the property to
     *
     * @return bool
     * @TODO Should this not be using the __set() magic function?
     */
    public function set($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.
     *
     * @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 $breaktype What kind of line break to use, defaults to CRLF
     *
     * @return string
     * @static
     */
    public static function normalizeBreaks($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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @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 $str
     *
     * @return bool
     * @static
     */
    public static function hasLineLongerThanMax($str)
    {
        //+2 to include CRLF line break for a 1000 total
        return (bool) 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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @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.
     *
     * @return array
     */
    public function getAllRecipientAddresses()
    {
        return $this->all_recipients;
    }

    /**
     * Perform a callback.
     *
     * @param bool   $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.
 */
class phpmailerException extends Exception
{
    /**
     * Prettify error message output.
     *
     * @return string
     */
    public function errorMessage()
    {
        $errorMsg = '<strong>'.$this->getMessage()."</strong><br />\n";

        return $errorMsg;
    }
}

Filemanager

Name Type Size Permission Actions
language Folder 0755
LICENSE File 25.8 KB 0644
PHPMailerAutoload.php File 1.29 KB 0644
VERSION File 7 B 0644
class.phpmailer.php File 143.31 KB 0644
class.phpmaileroauth.php File 7.04 KB 0644
class.phpmaileroauthgoogle.php File 2.38 KB 0644
class.pop3.php File 10.41 KB 0644
class.smtp.php File 41.15 KB 0644
composer.json File 1.14 KB 0644