File: /home/region-gk.ru/data/www/region-gk.ru/wp-content/themes/region/mail/phpmailer/PHPMailer.php
<?php
/**
* PHPMailer - PHP email creation and transport class.
* PHP Version 5.5.
*
* @see 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 - 2020 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.
*/
namespace PHPMailer\PHPMailer;
/**
* 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 {
const CHARSET_ASCII = 'us-ascii';
const CHARSET_ISO88591 = 'iso-8859-1';
const CHARSET_UTF8 = 'utf-8';
const CONTENT_TYPE_PLAINTEXT = 'text/plain';
const CONTENT_TYPE_TEXT_CALENDAR = 'text/calendar';
const CONTENT_TYPE_TEXT_HTML = 'text/html';
const CONTENT_TYPE_MULTIPART_ALTERNATIVE = 'multipart/alternative';
const CONTENT_TYPE_MULTIPART_MIXED = 'multipart/mixed';
const CONTENT_TYPE_MULTIPART_RELATED = 'multipart/related';
const ENCODING_7BIT = '7bit';
const ENCODING_8BIT = '8bit';
const ENCODING_BASE64 = 'base64';
const ENCODING_BINARY = 'binary';
const ENCODING_QUOTED_PRINTABLE = 'quoted-printable';
const ENCRYPTION_STARTTLS = 'tls';
const ENCRYPTION_SMTPS = 'ssl';
const ICAL_METHOD_REQUEST = 'REQUEST';
const ICAL_METHOD_PUBLISH = 'PUBLISH';
const ICAL_METHOD_REPLY = 'REPLY';
const ICAL_METHOD_ADD = 'ADD';
const ICAL_METHOD_CANCEL = 'CANCEL';
const ICAL_METHOD_REFRESH = 'REFRESH';
const ICAL_METHOD_COUNTER = 'COUNTER';
const ICAL_METHOD_DECLINECOUNTER = 'DECLINECOUNTER';
/**
* Email priority.
* Options: null (default), 1 = High, 3 = Normal, 5 = low.
* When null, the header is not set at all.
*
* @var int|null
*/
public $Priority;
/**
* The character set of the message.
*
* @var string
*/
public $CharSet = self::CHARSET_ISO88591;
/**
* The MIME Content-type of the message.
*
* @var string
*/
public $ContentType = self::CONTENT_TYPE_PLAINTEXT;
/**
* The message encoding.
* Options: "8bit", "7bit", "binary", "base64", and "quoted-printable".
*
* @var string
*/
public $Encoding = self::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 envelope sender of the message.
* This will usually be turned into a Return-Path header by the receiver,
* and is the address that bounces will be sent to.
* If not empty, will be passed via `-f` to sendmail or as the 'MAIL FROM' value over SMTP.
*
* @var string
*/
public $Sender = '';
/**
* 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 event structures, use classes like EasyPeasyICS or iCalcreator.
*
* @see http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/
* @see http://kigkonsult.se/iCalcreator/
*
* @var string
*/
public $Ical = '';
/**
* Value-array of "method" in Contenttype header "text/calendar"
*
* @var string[]
*/
protected static $IcalMethods = [
self::ICAL_METHOD_REQUEST,
self::ICAL_METHOD_PUBLISH,
self::ICAL_METHOD_REPLY,
self::ICAL_METHOD_ADD,
self::ICAL_METHOD_CANCEL,
self::ICAL_METHOD_REFRESH,
self::ICAL_METHOD_COUNTER,
self::ICAL_METHOD_DECLINECOUNTER,
];
/**
* 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.
*
* @see static::STD_LINE_LENGTH
*
* @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;
/**
* 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,
* $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value
* 'localhost.localdomain'.
*
* @see PHPMailer::$Helo
*
* @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
*/
public $Port = 25;
/**
* The SMTP HELO/EHLO name used for the SMTP connection.
* Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find
* one with the same method described above for $Hostname.
*
* @see PHPMailer::$Hostname
*
* @var string
*/
public $Helo = '';
/**
* What kind of encryption to use on the SMTP connection.
* Options: '', static::ENCRYPTION_STARTTLS, or static::ENCRYPTION_SMTPS.
*
* @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 $SMTPAutoTLS = true;
/**
* Whether to use SMTP authentication.
* Uses the Username and Password properties.
*
* @see PHPMailer::$Username
* @see PHPMailer::$Password
*
* @var bool
*/
public $SMTPAuth = false;
/**
* Options array passed to stream_context_create when connecting via SMTP.
*
* @var array
*/
public $SMTPOptions = [];
/**
* SMTP username.
*
* @var string
*/
public $Username = '';
/**
* SMTP password.
*
* @var string
*/
public $Password = '';
/**
* SMTP auth type.
* Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2, attempted in that order if not specified.
*
* @var string
*/
public $AuthType = '';
/**
* An instance of the PHPMailer OAuth class.
*
* @var OAuth
*/
protected $oauth;
/**
* The SMTP server timeout in seconds.
* Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
*
* @var int
*/
public $Timeout = 300;
/**
* Comma separated list of DSN notifications
* 'NEVER' under no circumstances a DSN must be returned to the sender.
* If you use NEVER all other notifications will be ignored.
* 'SUCCESS' will notify you when your mail has arrived at its destination.
* 'FAILURE' will arrive if an error occurred during delivery.
* 'DELAY' will notify you if there is an unusual delay in delivery, but the actual
* delivery's outcome (success or failure) is not yet decided.
*
* @see https://tools.ietf.org/html/rfc3461 See section 4.1 for more information about NOTIFY
*/
public $dsn = '';
/**
* SMTP class debug output mode.
* Debug output level.
* Options:
* @see SMTP::DEBUG_OFF: No output
* @see SMTP::DEBUG_CLIENT: Client messages
* @see SMTP::DEBUG_SERVER: Client and server messages
* @see SMTP::DEBUG_CONNECTION: As SERVER plus connection status
* @see SMTP::DEBUG_LOWLEVEL: Noisy, low-level data output, rarely needed
*
* @see SMTP::$do_debug
*
* @var int
*/
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
* By default PHPMailer will use `echo` if run from a `cli` or `cli-server` SAPI, `html` otherwise.
* Alternatively, you can provide a callable expecting two params: a message string and the debug level:
*
* ```php
* $mail->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
* ```
*
* Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
* level output is used:
*
* ```php
* $mail->Debugoutput = new myPsr3Logger;
* ```
*
* @see SMTP::$Debugoutput
*
* @var string|callable|\Psr\Log\LoggerInterface
*/
public $Debugoutput = 'echo';
/**
* Whether to keep the SMTP connection open after each message.
* If this is set to true then the connection will remain open after a send,
* and closing the connection will require an explicit call to smtpClose().
* It's a good idea to use this if you are sending multiple messages as it reduces overhead.
* See the mailing list example for how to use it.
*
* @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
*
* @deprecated 6.0.0 PHPMailer isn't a mailing list manager!
*/
public $SingleTo = false;
/**
* Storage for addresses when SingleTo is enabled.
*
* @var array
*/
protected $SingleToArray = [];
/**
* Whether to generate VERP addresses on send.
* Only applicable when sending via SMTP.
*
* @see https://en.wikipedia.org/wiki/Variable_envelope_return_path
* @see 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;
/**
* 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 Copy header field values for diagnostic use.
*
* @var bool
*/
public $DKIM_copyHeaderFields = true;
/**
* DKIM Extra signing headers.
*
* @example ['List-Unsubscribe', 'List-Help']
*
* @var array
*/
public $DKIM_extraHeaders = [];
/**
* 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:
* bool $result result of the send action
* array $to email addresses of the recipients
* array $cc cc email addresses
* array $bcc bcc email addresses
* string $subject the subject
* string $body the email body
* string $from email address of sender
* string $extra extra information of possible use
* "smtp_transaction_id' => last smtp transaction id
*
* @var string
*/
public $action_function = '';
/**
* What to put in the X-Mailer header.
* Options: An empty string for PHPMailer default, whitespace/null for none, or a string to use.
*
* @var string|null
*/
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.
* The default validator uses PHP's FILTER_VALIDATE_EMAIL filter_var option.
*
* @see PHPMailer::validateAddress()
*
* @var string|callable
*/
public static $validator = 'php';
/**
* An instance of the SMTP sender class.
*
* @var SMTP
*/
protected $smtp;
/**
* The array of 'to' names and addresses.
*
* @var array
*/
protected $to = [];
/**
* The array of 'cc' names and addresses.
*
* @var array
*/
protected $cc = [];
/**
* The array of 'bcc' names and addresses.
*
* @var array
*/
protected $bcc = [];
/**
* The array of reply-to names and addresses.
*
* @var array
*/
protected $ReplyTo = [];
/**
* An array of all kinds of addresses.
* Includes all of $to, $cc, $bcc.
*
* @see PHPMailer::$to
* @see PHPMailer::$cc
* @see PHPMailer::$bcc
*
* @var array
*/
protected $all_recipients = [];
/**
* 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 $bcc.
* This array is used only for addresses with IDN.
*
* @see PHPMailer::$to
* @see PHPMailer::$cc
* @see PHPMailer::$bcc
* @see PHPMailer::$all_recipients
*
* @var array
*/
protected $RecipientsQueue = [];
/**
* An array of reply-to names and addresses queued for validation.
* In send(), valid and non duplicate entries are moved to $ReplyTo.
* This array is used only for addresses with IDN.
*
* @see PHPMailer::$ReplyTo
*
* @var array
*/
protected $ReplyToQueue = [];
/**
* The array of attachments.
*
* @var array
*/
protected $attachment = [];
/**
* The array of custom headers.
*
* @var array
*/
protected $CustomHeader = [];
/**
* 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 = [];
/**
* The array of available languages.
*
* @var array
*/
protected $language = [];
/**
* 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 $uniqueid = '';
/**
* The PHPMailer Version number.
*
* @var string
*/
const VERSION = '6.5.0';
/**
* Error severity: message only, continue processing.
*
* @var int
*/
const STOP_MESSAGE = 0;
/**
* Error severity: message, likely ok to continue processing.
*
* @var int
*/
const STOP_CONTINUE = 1;
/**
* Error severity: message, plus full stop, critical error reached.
*
* @var int
*/
const STOP_CRITICAL = 2;
/**
* The SMTP standard CRLF line break.
* If you want to change line break format, change static::$LE, not this.
*/
const CRLF = "\r\n";
/**
* "Folding White Space" a white space string used for line folding.
*/
const FWS = ' ';
/**
* SMTP RFC standard line ending; Carriage Return, Line Feed.
*
* @var string
*/
protected static $LE = self::CRLF;
/**
* The maximum line length supported by mail().
*
* Background: mail() will sometimes corrupt messages
* with headers headers longer than 65 chars, see #818.
*
* @var int
*/
const MAIL_MAX_LINE_LENGTH = 63;
/**
* The maximum line length allowed by RFC 2822 section 2.1.1.
*
* @var int
*/
const MAX_LINE_LENGTH = 998;
/**
* The lower maximum line length allowed by RFC 2822 section 2.1.1.
* This length does NOT include the line break
* 76 means that lines will be 77 or 78 chars depending on whether
* the line break format is LF or CRLF; both are valid.
*
* @var int
*/
const STD_LINE_LENGTH = 76;
/**
* Constructor.
*
* @param bool $exceptions Should we throw external exceptions?
*/
public function __construct( $exceptions = null ) {
if ( null !== $exceptions ) {
$this->exceptions = (bool) $exceptions;
}
//Pick an appropriate debug output format automatically
$this->Debugoutput = ( strpos( PHP_SAPI, 'cli' ) !== false ? 'echo' : 'html' );
}
/**
* Destructor.
*/
public function __destruct() {
//Close any open SMTP connection nicely
$this->smtpClose();
}
/**
* Call mail() in a safe_mode-aware fashion.
* Also, unless sendmail_path points to sendmail (or something that
* claims to be sendmail), don't pass params (not a perfect fix,
* but it will do).
*
* @param string $to To
* @param string $subject Subject
* @param string $body Message Body
* @param string $header Additional Header(s)
* @param string|null $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 ) );
}
//Calling mail() with null params breaks
$this->edebug( 'Sending with mail()' );
$this->edebug( 'Sendmail path: ' . ini_get( 'sendmail_path' ) );
$this->edebug( "Envelope sender: {$this->Sender}" );
$this->edebug( "To: {$to}" );
$this->edebug( "Subject: {$subject}" );
$this->edebug( "Headers: {$header}" );
if ( ! $this->UseSendmailOptions || null === $params ) {
$result = @mail( $to, $subject, $body, $header );
} else {
$this->edebug( "Additional params: {$params}" );
$result = @mail( $to, $subject, $body, $header, $params );
}
$this->edebug( 'Result: ' . ( $result ? 'true' : 'false' ) );
return $result;
}
/**
* Output debugging info via a user-defined method.
* Only generates output if debug output is enabled.
*
* @param string $str
*
* @see PHPMailer::$SMTPDebug
*
* @see PHPMailer::$Debugoutput
*/
protected function edebug( $str ) {
if ( $this->SMTPDebug <= 0 ) {
return;
}
//Is this a PSR-3 logger?
if ( $this->Debugoutput instanceof \Psr\Log\LoggerInterface ) {
$this->Debugoutput->debug( $str );
return;
}
//Avoid clash with built-in function names
if ( is_callable( $this->Debugoutput ) && ! in_array( $this->Debugoutput, [ 'error_log', 'html', 'echo' ] ) ) {
call_user_func( $this->Debugoutput, $str, $this->SMTPDebug );
return;
}
switch ( $this->Debugoutput ) {
case 'error_log':
//Don't output, just log
/** @noinspection ForgottenDebugOutputInspection */
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|\r/m', "\n", $str );
echo gmdate( 'Y-m-d H:i:s' ),
"\t",
//Trim trailing space
trim(
//Indent for readability, except for trailing break
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 = static::CONTENT_TYPE_TEXT_HTML;
} else {
$this->ContentType = static::CONTENT_TYPE_PLAINTEXT;
}
}
/**
* 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 ( false === stripos( $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 ( false === stripos( $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
* @throws Exception
*
*/
public function addAddress( $address, $name = '' ) {
return $this->addOrEnqueueAnAddress( 'to', $address, $name );
}
/**
* Add a "CC" 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
* @throws Exception
*
*/
public function addCC( $address, $name = '' ) {
return $this->addOrEnqueueAnAddress( 'cc', $address, $name );
}
/**
* Add a "BCC" 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
* @throws Exception
*
*/
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
* @throws Exception
*
*/
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
*
* @return bool true on success, false if address already used or invalid in some way
* @throws Exception
*
*/
protected function addOrEnqueueAnAddress( $kind, $address, $name ) {
$address = trim( $address );
$name = trim( preg_replace( '/[\r\n]+/', '', $name ) ); //Strip breaks and trim
$pos = strrpos( $address, '@' );
if ( false === $pos ) {
//At-sign is missing.
$error_message = sprintf(
'%s (%s): %s',
$this->lang( 'invalid_address' ),
$kind,
$address
);
$this->setError( $error_message );
$this->edebug( $error_message );
if ( $this->exceptions ) {
throw new Exception( $error_message );
}
return false;
}
$params = [ $kind, $address, $name ];
//Enqueue addresses with IDN until we know the PHPMailer::$CharSet.
if ( static::idnSupported() && $this->has8bitChars( substr( $address, ++ $pos ) ) ) {
if ( 'Reply-To' !== $kind ) {
if ( ! array_key_exists( $address, $this->RecipientsQueue ) ) {
$this->RecipientsQueue[ $address ] = $params;
return true;
}
} elseif ( ! 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( [ $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
*
* @return bool true on success, false if address already used or invalid in some way
* @throws Exception
*
*/
protected function addAnAddress( $kind, $address, $name = '' ) {
if ( ! in_array( $kind, [ 'to', 'cc', 'bcc', 'Reply-To' ] ) ) {
$error_message = sprintf(
'%s: %s',
$this->lang( 'Invalid recipient kind' ),
$kind
);
$this->setError( $error_message );
$this->edebug( $error_message );
if ( $this->exceptions ) {
throw new Exception( $error_message );
}
return false;
}
if ( ! static::validateAddress( $address ) ) {
$error_message = sprintf(
'%s (%s): %s',
$this->lang( 'invalid_address' ),
$kind,
$address
);
$this->setError( $error_message );
$this->edebug( $error_message );
if ( $this->exceptions ) {
throw new Exception( $error_message );
}
return false;
}
if ( 'Reply-To' !== $kind ) {
if ( ! array_key_exists( strtolower( $address ), $this->all_recipients ) ) {
$this->{$kind}[] = [ $address, $name ];
$this->all_recipients[ strtolower( $address ) ] = true;
return true;
}
} elseif ( ! array_key_exists( strtolower( $address ), $this->ReplyTo ) ) {
$this->ReplyTo[ strtolower( $address ) ] = [ $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.
*
* @see http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation
*
* @param string $addrstr The address list string
* @param bool $useimap Whether to use the IMAP extension to parse the list
*
* @return array
*/
public static function parseAddresses( $addrstr, $useimap = true ) {
$addresses = [];
if ( $useimap && 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 (
( '.SYNTAX-ERROR.' !== $address->host ) && static::validateAddress(
$address->mailbox . '@' . $address->host
)
) {
//Decode the name part if it's present and encoded
if (
property_exists( $address, 'personal' ) &&
extension_loaded( 'mbstring' ) &&
preg_match( '/^=\?.*\?=$/', $address->personal )
) {
$address->personal = mb_decode_mimeheader( $address->personal );
}
$addresses[] = [
'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 ( static::validateAddress( $address ) ) {
$addresses[] = [
'name' => '',
'address' => $address,
];
}
} else {
list( $name, $email ) = explode( '<', $address );
$email = trim( str_replace( '>', '', $email ) );
$name = trim( $name );
if ( static::validateAddress( $email ) ) {
//If this name is encoded, decode it
if ( preg_match( '/^=\?.*\?=$/', $name ) ) {
$name = mb_decode_mimeheader( $name );
}
$addresses[] = [
//Remove any surrounding quotes and spaces from the name
'name' => trim( $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
*
* @return bool
* @throws Exception
*
*/
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().
$pos = strrpos( $address, '@' );
if (
( false === $pos )
|| ( ( ! $this->has8bitChars( substr( $address, ++ $pos ) ) || ! static::idnSupported() )
&& ! static::validateAddress( $address ) )
) {
$error_message = sprintf(
'%s (From): %s',
$this->lang( 'invalid_address' ),
$address
);
$this->setError( $error_message );
$this->edebug( $error_message );
if ( $this->exceptions ) {
throw new Exception( $error_message );
}
return false;
}
$this->From = $address;
$this->FromName = $name;
if ( $auto && 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 $this->lastMessageID;
}
/**
* Check that a string looks like an email address.
* Validation patterns supported:
* * `auto` Pick best pattern automatically;
* * `pcre8` Use the squiloople.com pattern, requires PCRE > 8.0;
* * `pcre` Use old PCRE implementation;
* * `php` Use PHP built-in FILTER_VALIDATE_EMAIL;
* * `html5` Use the pattern given by the HTML5 spec for 'email' type form input elements.
* * `noregex` Don't use a regex: super fast, really dumb.
* Alternatively you may pass in a callable to inject your own validator, for example:
*
* ```php
* PHPMailer::validateAddress('user@example.com', function($address) {
* return (strpos($address, '@') !== false);
* });
* ```
*
* You can also set the PHPMailer::$validator static to a callable, allowing built-in methods to use your validator.
*
* @param string $address The email address to check
* @param string|callable $patternselect Which pattern to use
*
* @return bool
*/
public static function validateAddress( $address, $patternselect = null ) {
if ( null === $patternselect ) {
$patternselect = static::$validator;
}
//Don't allow strings as callables, see SECURITY.md and CVE-2021-3603
if ( is_callable( $patternselect ) && ! is_string( $patternselect ) ) {
return call_user_func( $patternselect, $address );
}
//Reject line breaks in addresses; it's valid RFC5322, but not RFC5321
if ( strpos( $address, "\n" ) !== false || strpos( $address, "\r" ) !== false ) {
return false;
}
switch ( $patternselect ) {
case 'pcre': //Kept for BC
case 'pcre8':
/*
* A more complex and more permissive version of the RFC5322 regex on which FILTER_VALIDATE_EMAIL
* is based.
* In addition to the addresses allowed by filter_var, also permits:
* * dotless domains: `a@b`
* * comments: `1234 @ local(blah) .machine .example`
* * quoted elements: `'"test blah"@example.org'`
* * numeric TLDs: `a@b.123`
* * unbracketed IPv4 literals: `a@192.168.0.1`
* * IPv6 literals: 'first.last@[IPv6:a1::]'
* Not all of these will necessarily work for sending!
*
* @see 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',
$address
);
case 'html5':
/*
* This is the pattern used in the HTML5 spec for validation of 'email' type form input elements.
*
* @see https://html.spec.whatwg.org/#e-mail-state-(type=email)
*/
return (bool) preg_match(
'/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[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 'php':
default:
return filter_var( $address, FILTER_VALIDATE_EMAIL ) !== false;
}
}
/**
* Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the
* `intl` and `mbstring` PHP extensions.
*
* @return bool `true` if required functions for IDN support are present
*/
public static function idnSupported() {
return function_exists( 'idn_to_ascii' ) && function_exists( 'mb_convert_encoding' );
}
/**
* Converts IDN in given email address to its ASCII form, also known as punycode, if possible.
* Important: Address must be passed in same encoding as currently set in PHPMailer::$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 contains characters not allowed in an IDN).
*
* @param string $address The email address to convert
*
* @return string The encoded address in ASCII form
* @see PHPMailer::$CharSet
*
*/
public function punyencodeAddress( $address ) {
//Verify we have required functions, CharSet, and at-sign.
$pos = strrpos( $address, '@' );
if (
! empty( $this->CharSet ) &&
false !== $pos &&
static::idnSupported()
) {
$domain = substr( $address, ++ $pos );
//Verify CharSet string is a valid one, and domain properly encoded in this CharSet.
if ( $this->has8bitChars( $domain ) && @mb_check_encoding( $domain, $this->CharSet ) ) {
//Convert the domain from whatever charset it's in to UTF-8
$domain = mb_convert_encoding( $domain, self::CHARSET_UTF8, $this->CharSet );
//Ignore IDE complaints about this line - method signature changed in PHP 5.4
$errorcode = 0;
if ( defined( 'INTL_IDNA_VARIANT_UTS46' ) ) {
//Use the current punycode standard (appeared in PHP 7.2)
$punycode = idn_to_ascii( $domain, $errorcode, \INTL_IDNA_VARIANT_UTS46 );
} elseif ( defined( 'INTL_IDNA_VARIANT_2003' ) ) {
//Fall back to this old, deprecated/removed encoding
$punycode = idn_to_ascii( $domain, $errorcode, \INTL_IDNA_VARIANT_2003 );
} else {
//Fall back to a default we don't know about
$punycode = idn_to_ascii( $domain, $errorcode );
}
if ( false !== $punycode ) {
return substr( $address, 0, $pos ) . $punycode;
}
}
}
return $address;
}
/**
* Create a message and send it.
* Uses the sending method specified by $Mailer.
*
* @return bool false on error - See the ErrorInfo property for details of the error
* @throws Exception
*
*/
public function send() {
try {
if ( ! $this->preSend() ) {
return false;
}
return $this->postSend();
} catch ( Exception $exc ) {
$this->mailHeader = '';
$this->setError( $exc->getMessage() );
if ( $this->exceptions ) {
throw $exc;
}
return false;
}
}
/**
* Prepare a message for sending.
*
* @return bool
* @throws Exception
*
*/
public function preSend() {
if (
'smtp' === $this->Mailer
|| ( 'mail' === $this->Mailer && ( \PHP_VERSION_ID >= 80000 || stripos( PHP_OS, 'WIN' ) === 0 ) )
) {
//SMTP mandates RFC-compliant line endings
//and it's also used with mail() on Windows
static::setLE( self::CRLF );
} else {
//Maintain backward compatibility with legacy Linux command line mailers
static::setLE( PHP_EOL );
}
//Check for buggy PHP versions that add a header with an incorrect line break
if (
'mail' === $this->Mailer
&& ( ( \PHP_VERSION_ID >= 70000 && \PHP_VERSION_ID < 70017 )
|| ( \PHP_VERSION_ID >= 70100 && \PHP_VERSION_ID < 70103 ) )
&& ini_get( 'mail.add_x_header' ) === '1'
&& stripos( PHP_OS, 'WIN' ) === 0
) {
trigger_error(
'Your version of PHP is affected by a bug that may result in corrupted messages.' .
' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' .
' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.',
E_USER_WARNING
);
}
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( [ $this, 'addAnAddress' ], $params );
}
if ( count( $this->to ) + count( $this->cc ) + count( $this->bcc ) < 1 ) {
throw new Exception( $this->lang( 'provide_address' ), self::STOP_CRITICAL );
}
//Validate From, Sender, and ConfirmReadingTo addresses
foreach ( [ '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 ( ! static::validateAddress( $this->$address_kind ) ) {
$error_message = sprintf(
'%s (%s): %s',
$this->lang( 'invalid_address' ),
$address_kind,
$this->$address_kind
);
$this->setError( $error_message );
$this->edebug( $error_message );
if ( $this->exceptions ) {
throw new Exception( $error_message );
}
return false;
}
}
//Set whether the message is multipart/alternative
if ( $this->alternativeExists() ) {
$this->ContentType = static::CONTENT_TYPE_MULTIPART_ALTERNATIVE;
}
$this->setMessageType();
//Refuse to send an empty message unless we are specifically allowing it
if ( ! $this->AllowEmpty && empty( $this->Body ) ) {
throw new Exception( $this->lang( 'empty_message' ), self::STOP_CRITICAL );
}
//Trim subject consistently
$this->Subject = trim( $this->Subject );
//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 ( 'mail' === $this->Mailer ) {
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( $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 )
&& static::isPermittedPath( $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 = static::stripTrailingWSP( $this->MIMEHeader ) . static::$LE .
static::normalizeBreaks( $header_dkim ) . static::$LE;
}
return true;
} catch ( Exception $exc ) {
$this->setError( $exc->getMessage() );
if ( $this->exceptions ) {
throw $exc;
}
return false;
}
}
/**
* Actually send a message via the selected mechanism.
*
* @return bool
* @throws Exception
*
*/
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 ( Exception $exc ) {
if ( $this->Mailer === 'smtp' && $this->SMTPKeepAlive == true ) {
$this->smtp->reset();
}
$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 $body The message body
*
* @return bool
* @throws Exception
*
* @see PHPMailer::$Sendmail
*
*/
protected function sendmailSend( $header, $body ) {
if ( $this->Mailer === 'qmail' ) {
$this->edebug( 'Sending with qmail' );
} else {
$this->edebug( 'Sending with sendmail' );
}
$header = static::stripTrailingWSP( $header ) . static::$LE . static::$LE;
//This sets the SMTP envelope sender which gets turned into a return-path header by the receiver
//A space after `-f` is optional, but there is a long history of its presence
//causing problems, so we don't use one
//Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html
//Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html
//Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html
//Example problem: https://www.drupal.org/node/1057954
if ( empty( $this->Sender ) && ! empty( ini_get( 'sendmail_from' ) ) ) {
//PHP config has a sender address we can use
$this->Sender = ini_get( 'sendmail_from' );
}
//CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
if ( ! empty( $this->Sender ) && static::validateAddress( $this->Sender ) && self::isShellSafe( $this->Sender ) ) {
if ( $this->Mailer === 'qmail' ) {
$sendmailFmt = '%s -f%s';
} else {
$sendmailFmt = '%s -oi -f%s -t';
}
} else {
//allow sendmail to choose a default envelope sender. It may
//seem preferable to force it to use the From header as with
//SMTP, but that introduces new problems (see
//<https://github.com/PHPMailer/PHPMailer/issues/2298>), and
//it has historically worked this way.
$sendmailFmt = '%s -oi -t';
}
$sendmail = sprintf( $sendmailFmt, escapeshellcmd( $this->Sendmail ), $this->Sender );
$this->edebug( 'Sendmail path: ' . $this->Sendmail );
$this->edebug( 'Sendmail command: ' . $sendmail );
$this->edebug( 'Envelope sender: ' . $this->Sender );
$this->edebug( "Headers: {$header}" );
if ( $this->SingleTo ) {
foreach ( $this->SingleToArray as $toAddr ) {
$mail = @popen( $sendmail, 'w' );
if ( ! $mail ) {
throw new Exception( $this->lang( 'execute' ) . $this->Sendmail, self::STOP_CRITICAL );
}
$this->edebug( "To: {$toAddr}" );
fwrite( $mail, 'To: ' . $toAddr . "\n" );
fwrite( $mail, $header );
fwrite( $mail, $body );
$result = pclose( $mail );
$addrinfo = static::parseAddresses( $toAddr );
$this->doCallback(
( $result === 0 ),
[ [ $addrinfo['address'], $addrinfo['name'] ] ],
$this->cc,
$this->bcc,
$this->Subject,
$body,
$this->From,
[]
);
$this->edebug( "Result: " . ( $result === 0 ? 'true' : 'false' ) );
if ( 0 !== $result ) {
throw new Exception( $this->lang( 'execute' ) . $this->Sendmail, self::STOP_CRITICAL );
}
}
} else {
$mail = @popen( $sendmail, 'w' );
if ( ! $mail ) {
throw new Exception( $this->lang( 'execute' ) . $this->Sendmail, self::STOP_CRITICAL );
}
fwrite( $mail, $header );
fwrite( $mail, $body );
$result = pclose( $mail );
$this->doCallback(
( $result === 0 ),
$this->to,
$this->cc,
$this->bcc,
$this->Subject,
$body,
$this->From,
[]
);
$this->edebug( "Result: " . ( $result === 0 ? 'true' : 'false' ) );
if ( 0 !== $result ) {
throw new Exception( $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.
*
* @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report
*
* @param string $string The string to be validated
*
* @return bool
*/
protected static function isShellSafe( $string ) {
//Future-proof
if (
escapeshellcmd( $string ) !== $string
|| ! in_array( escapeshellarg( $string ), [ "'$string'", "\"$string\"" ] )
) {
return false;
}
$length = strlen( $string );
for ( $i = 0; $i < $length; ++ $i ) {
$c = $string[ $i ];
//All other characters have a special meaning in at least one common shell, including = and +.
//Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here.
//Note that this does permit non-Latin alphanumeric characters based on the current locale.
if ( ! ctype_alnum( $c ) && strpos( '@_-.', $c ) === false ) {
return false;
}
}
return true;
}
/**
* Check whether a file path is of a permitted type.
* Used to reject URLs and phar files from functions that access local file paths,
* such as addAttachment.
*
* @param string $path A relative or absolute path to a file
*
* @return bool
*/
protected static function isPermittedPath( $path ) {
//Matches scheme definition from https://tools.ietf.org/html/rfc3986#section-3.1
return ! preg_match( '#^[a-z][a-z\d+.-]*://#i', $path );
}
/**
* Check whether a file path is safe, accessible, and readable.
*
* @param string $path A relative or absolute path to a file
*
* @return bool
*/
protected static function fileIsAccessible( $path ) {
if ( ! static::isPermittedPath( $path ) ) {
return false;
}
$readable = file_exists( $path );
//If not a UNC path (expected to start with \\), check read permission, see #2069
if ( strpos( $path, '\\\\' ) !== 0 ) {
$readable = $readable && is_readable( $path );
}
return $readable;
}
/**
* Send mail using the PHP mail() function.
*
* @see http://www.php.net/manual/en/book.mail.php
*
* @param string $header The message headers
* @param string $body The message body
*
* @throws Exception
*
* @return bool
*/
protected function mailSend( $header, $body ) {
$header = static::stripTrailingWSP( $header ) . static::$LE . static::$LE;
$toArr = [];
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
//A space after `-f` is optional, but there is a long history of its presence
//causing problems, so we don't use one
//Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html
//Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html
//Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html
//Example problem: https://www.drupal.org/node/1057954
//CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
if ( empty( $this->Sender ) && ! empty( ini_get( 'sendmail_from' ) ) ) {
//PHP config has a sender address we can use
$this->Sender = ini_get( 'sendmail_from' );
}
if ( ! empty( $this->Sender ) && static::validateAddress( $this->Sender ) ) {
if ( self::isShellSafe( $this->Sender ) ) {
$params = sprintf( '-f%s', $this->Sender );
}
$old_from = ini_get( 'sendmail_from' );
ini_set( 'sendmail_from', $this->Sender );
}
$result = false;
if ( $this->SingleTo && count( $toArr ) > 1 ) {
foreach ( $toArr as $toAddr ) {
$result = $this->mailPassthru( $toAddr, $this->Subject, $body, $header, $params );
$addrinfo = static::parseAddresses( $toAddr );
$this->doCallback(
$result,
[ [ $addrinfo['address'], $addrinfo['name'] ] ],
$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 Exception( $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,
* or set one with setSMTPInstance.
*
* @return SMTP
*/
public function getSMTPInstance() {
if ( ! is_object( $this->smtp ) ) {
$this->smtp = new SMTP();
}
return $this->smtp;
}
/**
* Provide an instance to use for SMTP operations.
*
* @return SMTP
*/
public function setSMTPInstance( SMTP $smtp ) {
$this->smtp = $smtp;
return $this->smtp;
}
/**
* Send mail via SMTP.
* Returns false if there is a bad MAIL FROM, RCPT, or DATA input.
*
* @param string $header The message headers
* @param string $body The message body
*
* @return bool
* @throws Exception
*
* @see PHPMailer::setSMTPInstance() to use a different class.
*
* @uses \PHPMailer\PHPMailer\SMTP
*
*/
protected function smtpSend( $header, $body ) {
$header = static::stripTrailingWSP( $header ) . static::$LE . static::$LE;
$bad_rcpt = [];
if ( ! $this->smtpConnect( $this->SMTPOptions ) ) {
throw new Exception( $this->lang( 'smtp_connect_failed' ), self::STOP_CRITICAL );
}
//Sender already validated in preSend()
if ( '' === $this->Sender ) {
$smtp_from = $this->From;
} else {
$smtp_from = $this->Sender;
}
if ( ! $this->smtp->mail( $smtp_from ) ) {
$this->setError( $this->lang( 'from_failed' ) . $smtp_from . ' : ' . implode( ',', $this->smtp->getError() ) );
throw new Exception( $this->ErrorInfo, self::STOP_CRITICAL );
}
$callbacks = [];
//Attempt to send to all recipients
foreach ( [ $this->to, $this->cc, $this->bcc ] as $togroup ) {
foreach ( $togroup as $to ) {
if ( ! $this->smtp->recipient( $to[0], $this->dsn ) ) {
$error = $this->smtp->getError();
$bad_rcpt[] = [ 'to' => $to[0], 'error' => $error['detail'] ];
$isSent = false;
} else {
$isSent = true;
}
$callbacks[] = [ 'issent' => $isSent, 'to' => $to[0], 'name' => $to[1] ];
}
}
//Only send the DATA command if we have viable recipients
if ( ( count( $this->all_recipients ) > count( $bad_rcpt ) ) && ! $this->smtp->data( $header . $body ) ) {
throw new Exception( $this->lang( 'data_not_accepted' ), self::STOP_CRITICAL );
}
$smtp_transaction_id = $this->smtp->getLastTransactionID();
if ( $this->SMTPKeepAlive ) {
$this->smtp->reset();
} else {
$this->smtp->quit();
$this->smtp->close();
}
foreach ( $callbacks as $cb ) {
$this->doCallback(
$cb['issent'],
[ [ $cb['to'], $cb['name'] ] ],
[],
[],
$this->Subject,
$body,
$this->From,
[ 'smtp_transaction_id' => $smtp_transaction_id ]
);
}
//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 Exception( $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()
*
* @return bool
* @throws Exception
*
* @uses \PHPMailer\PHPMailer\SMTP
*
*/
public function smtpConnect( $options = null ) {
if ( null === $this->smtp ) {
$this->smtp = $this->getSMTPInstance();
}
//If no options are provided, use whatever is set in the instance
if ( 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 ) {
$hostinfo = [];
if (
! preg_match(
'/^(?:(ssl|tls):\/\/)?(.+?)(?::(\d+))?$/',
trim( $hostentry ),
$hostinfo
)
) {
$this->edebug( $this->lang( 'invalid_hostentry' ) . ' ' . trim( $hostentry ) );
//Not a valid host entry
continue;
}
//$hostinfo[1]: optional ssl or tls prefix
//$hostinfo[2]: the hostname
//$hostinfo[3]: 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
//Check the host name is a valid name or IP address before trying to use it
if ( ! static::isValidHost( $hostinfo[2] ) ) {
$this->edebug( $this->lang( 'invalid_host' ) . ' ' . $hostinfo[2] );
continue;
}
$prefix = '';
$secure = $this->SMTPSecure;
$tls = ( static::ENCRYPTION_STARTTLS === $this->SMTPSecure );
if ( 'ssl' === $hostinfo[1] || ( '' === $hostinfo[1] && static::ENCRYPTION_SMTPS === $this->SMTPSecure ) ) {
$prefix = 'ssl://';
$tls = false; //Can't have SSL and TLS at the same time
$secure = static::ENCRYPTION_SMTPS;
} elseif ( 'tls' === $hostinfo[1] ) {
$tls = true;
//TLS doesn't use a prefix
$secure = static::ENCRYPTION_STARTTLS;
}
//Do we need the OpenSSL extension?
$sslext = defined( 'OPENSSL_ALGO_SHA256' );
if ( static::ENCRYPTION_STARTTLS === $secure || static::ENCRYPTION_SMTPS === $secure ) {
//Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled
if ( ! $sslext ) {
throw new Exception( $this->lang( 'extension_missing' ) . 'openssl', self::STOP_CRITICAL );
}
}
$host = $hostinfo[2];
$port = $this->Port;
if (
array_key_exists( 3, $hostinfo ) &&
is_numeric( $hostinfo[3] ) &&
$hostinfo[3] > 0 &&
$hostinfo[3] < 65536
) {
$port = (int) $hostinfo[3];
}
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 && $sslext && 'ssl' !== $secure && $this->smtp->getServerExt( 'STARTTLS' ) ) {
$tls = true;
}
if ( $tls ) {
if ( ! $this->smtp->startTLS() ) {
throw new Exception( $this->lang( 'connect_host' ) );
}
//We must resend EHLO after TLS negotiation
$this->smtp->hello( $hello );
}
if (
$this->SMTPAuth && ! $this->smtp->authenticate(
$this->Username,
$this->Password,
$this->AuthType,
$this->oauth
)
) {
throw new Exception( $this->lang( 'authenticate' ) );
}
return true;
} catch ( Exception $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 && null !== $lastexception ) {
throw $lastexception;
}
return false;
}
/**
* Close the active SMTP session if one exists.
*/
public function smtpClose() {
if ( ( null !== $this->smtp ) && $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).D
* Do not set this from user input!
*
* @return bool
*/
public function setLanguage( $langcode = 'en', $lang_path = '' ) {
//Backwards compatibility for renamed language codes
$renamed_langcodes = [
'br' => 'pt_br',
'cz' => 'cs',
'dk' => 'da',
'no' => 'nb',
'se' => 'sv',
'rs' => 'sr',
'tg' => 'tl',
'am' => 'hy',
];
if ( array_key_exists( $langcode, $renamed_langcodes ) ) {
$langcode = $renamed_langcodes[ $langcode ];
}
//Define full set of translatable strings in English
$PHPMAILER_LANG = [
'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: ',
'invalid_hostentry' => 'Invalid hostentry: ',
'invalid_host' => 'Invalid host: ',
'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( __DIR__ ) . 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 ( 'en' !== $langcode ) {
//Make sure language file path is readable
if ( ! static::fileIsAccessible( $lang_file ) ) {
$foundlang = false;
} else {
//$foundlang = include $lang_file;
$lines = file( $lang_file );
foreach ( $lines as $line ) {
//Translation file lines look like this:
//$PHPMAILER_LANG['authenticate'] = 'SMTP-Fehler: Authentifizierung fehlgeschlagen.';
//These files are parsed as text and not PHP so as to avoid the possibility of code injection
//See https://blog.stevenlevithan.com/archives/match-quoted-string
$matches = [];
if (
preg_match(
'/^\$PHPMAILER_LANG\[\'([a-z\d_]+)\'\]\s*=\s*(["\'])(.+)*?\2;/',
$line,
$matches
) &&
//Ignore unknown translation keys
array_key_exists( $matches[1], $PHPMAILER_LANG )
) {
//Overwrite language-specific strings so we'll never have missing translation keys.
$PHPMAILER_LANG[ $matches[1] ] = (string) $matches[3];
}
}
}
}
$this->language = $PHPMAILER_LANG;
return $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 recipients,
* where each recipient is a 2-element indexed array with element 0 containing an address
* and element 1 containing a name, like:
* [['joe@example.com', 'Joe User'], ['zoe@example.com', 'Zoe User']]
*
* @return string
*/
public function addrAppend( $type, $addr ) {
$addresses = [];
foreach ( $addr as $address ) {
$addresses[] = $this->addrFormat( $address );
}
return $type . ': ' . implode( ', ', $addresses ) . static::$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
* ['joe@example.com', 'Joe User']
*
* @return string
*/
public function addrFormat( $addr ) {
if ( empty( $addr[1] ) ) { //No name provided
return $this->secureHeader( $addr[0] );
}
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 ) {
$soft_break = sprintf( ' =%s', static::$LE );
} else {
$soft_break = static::$LE;
}
//If utf-8 encoding is used, we will need to make sure we don't
//split multibyte characters when we wrap
$is_utf8 = static::CHARSET_UTF8 === strtolower( $this->CharSet );
$lelen = strlen( static::$LE );
$crlflen = strlen( static::$LE );
$message = static::normalizeBreaks( $message );
//Remove a trailing line break
if ( substr( $message, - $lelen ) === static::$LE ) {
$message = substr( $message, 0, - $lelen );
}
//Split message into lines
$lines = explode( static::$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 && ( 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 .= $buf . sprintf( '=%s', static::$LE );
} else {
$message .= $buf . $soft_break;
}
$buf = '';
}
while ( $word !== '' ) {
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 = (string) substr( $word, $len );
if ( $word !== '' ) {
$message .= $part . sprintf( '=%s', static::$LE );
} else {
$buf = $part;
}
}
} else {
$buf_o = $buf;
if ( ! $firstword ) {
$buf .= ' ';
}
$buf .= $word;
if ( '' !== $buf_o && strlen( $buf ) > $length ) {
$message .= $buf_o . $soft_break;
$buf = $word;
}
}
$firstword = false;
}
$message .= $buf . static::$LE;
}
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 -= $lookBack - $encodedCharPos;
}
$foundSplitPos = true;
} elseif ( $dec >= 192 ) {
//First byte of a multi byte character
//Reduce maxLength to split at start of character
$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 = '';
$result .= $this->headerLine( 'Date', '' === $this->MessageDate ? self::rfcDate() : $this->MessageDate );
//The To header is created automatically by mail(), so needs to be omitted here
if ( 'mail' !== $this->Mailer ) {
if ( $this->SingleTo ) {
foreach ( $this->to as $toaddr ) {
$this->SingleToArray[] = $this->addrFormat( $toaddr );
}
} elseif ( count( $this->to ) > 0 ) {
$result .= $this->addrAppend( 'To', $this->to );
} elseif ( count( $this->cc ) === 0 ) {
$result .= $this->headerLine( 'To', 'undisclosed-recipients:;' );
}
}
$result .= $this->addrAppend( 'From', [ [ 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 (
(
'sendmail' === $this->Mailer || 'qmail' === $this->Mailer || 'mail' === $this->Mailer
)
&& 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 ( 'mail' !== $this->Mailer ) {
$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 ( '' !== $this->MessageID && preg_match( '/^<.*@.*>$/', $this->MessageID ) ) {
$this->lastMessageID = $this->MessageID;
} else {
$this->lastMessageID = sprintf( '<%s@%s>', $this->uniqueid, $this->serverHostname() );
}
$result .= $this->headerLine( 'Message-ID', $this->lastMessageID );
if ( null !== $this->Priority ) {
$result .= $this->headerLine( 'X-Priority', $this->Priority );
}
if ( '' === $this->XMailer ) {
$result .= $this->headerLine(
'X-Mailer',
'PHPMailer ' . self::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', static::CONTENT_TYPE_MULTIPART_RELATED . ';' );
$result .= $this->textLine( ' boundary="' . $this->boundary[1] . '"' );
break;
case 'attach':
case 'inline_attach':
case 'alt_attach':
case 'alt_inline_attach':
$result .= $this->headerLine( 'Content-Type', static::CONTENT_TYPE_MULTIPART_MIXED . ';' );
$result .= $this->textLine( ' boundary="' . $this->boundary[1] . '"' );
break;
case 'alt':
case 'alt_inline':
$result .= $this->headerLine( 'Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';' );
$result .= $this->textLine( ' boundary="' . $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 ( static::ENCODING_7BIT !== $this->Encoding ) {
//RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE
if ( $ismultipart ) {
if ( static::ENCODING_8BIT === $this->Encoding ) {
$result .= $this->headerLine( 'Content-Transfer-Encoding', static::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 );
}
}
return $result;
}
/**
* Returns the whole MIME message.
* Includes complete headers and body.
* Only valid post preSend().
*
* @return string
* @see PHPMailer::preSend()
*
*/
public function getSentMIMEMessage() {
return static::stripTrailingWSP( $this->MIMEHeader . $this->mailHeader ) .
static::$LE . static::$LE . $this->MIMEBody;
}
/**
* Create a unique ID to use for boundaries.
*
* @return string
*/
protected function generateId() {
$len = 32; //32 bytes = 256 bits
$bytes = '';
if ( function_exists( 'random_bytes' ) ) {
try {
$bytes = random_bytes( $len );
} catch ( \Exception $e ) {
//Do nothing
}
} elseif ( function_exists( 'openssl_random_pseudo_bytes' ) ) {
/** @noinspection CryptographicallySecureRandomnessInspection */
$bytes = openssl_random_pseudo_bytes( $len );
}
if ( $bytes === '' ) {
//We failed to produce a proper random string, so make do.
//Use a hash to force the length to the same as the other methods
$bytes = hash( 'sha256', uniqid( (string) mt_rand(), true ), true );
}
//We don't care about messing up base64 format here, just want a random string
return str_replace( [ '=', '+', '/' ], '', base64_encode( hash( 'sha256', $bytes, true ) ) );
}
/**
* Assemble the message body.
* Returns an empty string on failure.
*
* @return string The assembled message body
* @throws Exception
*
*/
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 .= $this->getMailMIME() . static::$LE;
}
$this->setWordWrap();
$bodyEncoding = $this->Encoding;
$bodyCharSet = $this->CharSet;
//Can we do a 7-bit downgrade?
if ( static::ENCODING_8BIT === $bodyEncoding && ! $this->has8bitChars( $this->Body ) ) {
$bodyEncoding = static::ENCODING_7BIT;
//All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
$bodyCharSet = static::CHARSET_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 ( static::ENCODING_BASE64 !== $this->Encoding && static::hasLineLongerThanMax( $this->Body ) ) {
$bodyEncoding = static::ENCODING_QUOTED_PRINTABLE;
}
$altBodyEncoding = $this->Encoding;
$altBodyCharSet = $this->CharSet;
//Can we do a 7-bit downgrade?
if ( static::ENCODING_8BIT === $altBodyEncoding && ! $this->has8bitChars( $this->AltBody ) ) {
$altBodyEncoding = static::ENCODING_7BIT;
//All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
$altBodyCharSet = static::CHARSET_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 ( static::ENCODING_BASE64 !== $altBodyEncoding && static::hasLineLongerThanMax( $this->AltBody ) ) {
$altBodyEncoding = static::ENCODING_QUOTED_PRINTABLE;
}
//Use this as a preamble in all multipart message types
$mimepre = 'This is a multi-part message in MIME format.' . static::$LE . static::$LE;
switch ( $this->message_type ) {
case 'inline':
$body .= $mimepre;
$body .= $this->getBoundary( $this->boundary[1], $bodyCharSet, '', $bodyEncoding );
$body .= $this->encodeString( $this->Body, $bodyEncoding );
$body .= static::$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 );
$body .= static::$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', static::CONTENT_TYPE_MULTIPART_RELATED . ';' );
$body .= $this->textLine( ' boundary="' . $this->boundary[2] . '";' );
$body .= $this->textLine( ' type="' . static::CONTENT_TYPE_TEXT_HTML . '"' );
$body .= static::$LE;
$body .= $this->getBoundary( $this->boundary[2], $bodyCharSet, '', $bodyEncoding );
$body .= $this->encodeString( $this->Body, $bodyEncoding );
$body .= static::$LE;
$body .= $this->attachAll( 'inline', $this->boundary[2] );
$body .= static::$LE;
$body .= $this->attachAll( 'attachment', $this->boundary[1] );
break;
case 'alt':
$body .= $mimepre;
$body .= $this->getBoundary(
$this->boundary[1],
$altBodyCharSet,
static::CONTENT_TYPE_PLAINTEXT,
$altBodyEncoding
);
$body .= $this->encodeString( $this->AltBody, $altBodyEncoding );
$body .= static::$LE;
$body .= $this->getBoundary(
$this->boundary[1],
$bodyCharSet,
static::CONTENT_TYPE_TEXT_HTML,
$bodyEncoding
);
$body .= $this->encodeString( $this->Body, $bodyEncoding );
$body .= static::$LE;
if ( ! empty( $this->Ical ) ) {
$method = static::ICAL_METHOD_REQUEST;
foreach ( static::$IcalMethods as $imethod ) {
if ( stripos( $this->Ical, 'METHOD:' . $imethod ) !== false ) {
$method = $imethod;
break;
}
}
$body .= $this->getBoundary(
$this->boundary[1],
'',
static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method,
''
);
$body .= $this->encodeString( $this->Ical, $this->Encoding );
$body .= static::$LE;
}
$body .= $this->endBoundary( $this->boundary[1] );
break;
case 'alt_inline':
$body .= $mimepre;
$body .= $this->getBoundary(
$this->boundary[1],
$altBodyCharSet,
static::CONTENT_TYPE_PLAINTEXT,
$altBodyEncoding
);
$body .= $this->encodeString( $this->AltBody, $altBodyEncoding );
$body .= static::$LE;
$body .= $this->textLine( '--' . $this->boundary[1] );
$body .= $this->headerLine( 'Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';' );
$body .= $this->textLine( ' boundary="' . $this->boundary[2] . '";' );
$body .= $this->textLine( ' type="' . static::CONTENT_TYPE_TEXT_HTML . '"' );
$body .= static::$LE;
$body .= $this->getBoundary(
$this->boundary[2],
$bodyCharSet,
static::CONTENT_TYPE_TEXT_HTML,
$bodyEncoding
);
$body .= $this->encodeString( $this->Body, $bodyEncoding );
$body .= static::$LE;
$body .= $this->attachAll( 'inline', $this->boundary[2] );
$body .= static::$LE;
$body .= $this->endBoundary( $this->boundary[1] );
break;
case 'alt_attach':
$body .= $mimepre;
$body .= $this->textLine( '--' . $this->boundary[1] );
$body .= $this->headerLine( 'Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';' );
$body .= $this->textLine( ' boundary="' . $this->boundary[2] . '"' );
$body .= static::$LE;
$body .= $this->getBoundary(
$this->boundary[2],
$altBodyCharSet,
static::CONTENT_TYPE_PLAINTEXT,
$altBodyEncoding
);
$body .= $this->encodeString( $this->AltBody, $altBodyEncoding );
$body .= static::$LE;
$body .= $this->getBoundary(
$this->boundary[2],
$bodyCharSet,
static::CONTENT_TYPE_TEXT_HTML,
$bodyEncoding
);
$body .= $this->encodeString( $this->Body, $bodyEncoding );
$body .= static::$LE;
if ( ! empty( $this->Ical ) ) {
$method = static::ICAL_METHOD_REQUEST;
foreach ( static::$IcalMethods as $imethod ) {
if ( stripos( $this->Ical, 'METHOD:' . $imethod ) !== false ) {
$method = $imethod;
break;
}
}
$body .= $this->getBoundary(
$this->boundary[2],
'',
static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method,
''
);
$body .= $this->encodeString( $this->Ical, $this->Encoding );
}
$body .= $this->endBoundary( $this->boundary[2] );
$body .= static::$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', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';' );
$body .= $this->textLine( ' boundary="' . $this->boundary[2] . '"' );
$body .= static::$LE;
$body .= $this->getBoundary(
$this->boundary[2],
$altBodyCharSet,
static::CONTENT_TYPE_PLAINTEXT,
$altBodyEncoding
);
$body .= $this->encodeString( $this->AltBody, $altBodyEncoding );
$body .= static::$LE;
$body .= $this->textLine( '--' . $this->boundary[2] );
$body .= $this->headerLine( 'Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';' );
$body .= $this->textLine( ' boundary="' . $this->boundary[3] . '";' );
$body .= $this->textLine( ' type="' . static::CONTENT_TYPE_TEXT_HTML . '"' );
$body .= static::$LE;
$body .= $this->getBoundary(
$this->boundary[3],
$bodyCharSet,
static::CONTENT_TYPE_TEXT_HTML,
$bodyEncoding
);
$body .= $this->encodeString( $this->Body, $bodyEncoding );
$body .= static::$LE;
$body .= $this->attachAll( 'inline', $this->boundary[3] );
$body .= static::$LE;
$body .= $this->endBoundary( $this->boundary[2] );
$body .= static::$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 = '';
if ( $this->exceptions ) {
throw new Exception( $this->lang( 'empty_message' ), self::STOP_CRITICAL );
}
} elseif ( $this->sign_key_file ) {
try {
if ( ! defined( 'PKCS7_TEXT' ) ) {
throw new Exception( $this->lang( 'extension_missing' ) . 'openssl' );
}
$file = tempnam( sys_get_temp_dir(), 'srcsign' );
$signed = tempnam( sys_get_temp_dir(), 'mailsign' );
file_put_contents( $file, $body );
//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 ),
[ 'file://' . realpath( $this->sign_key_file ), $this->sign_key_pass ],
[]
);
} else {
$sign = @openssl_pkcs7_sign(
$file,
$signed,
'file://' . realpath( $this->sign_cert_file ),
[ 'file://' . realpath( $this->sign_key_file ), $this->sign_key_pass ],
[],
PKCS7_DETACHED,
$this->sign_extracerts_file
);
}
@unlink( $file );
if ( $sign ) {
$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 .= $parts[0] . static::$LE . static::$LE;
$body = $parts[1];
} else {
@unlink( $signed );
throw new Exception( $this->lang( 'signing' ) . openssl_error_string() );
}
} catch ( Exception $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 );
$result .= static::$LE;
//RFC1341 part 5 says 7bit is assumed if not specified
if ( static::ENCODING_7BIT !== $encoding ) {
$result .= $this->headerLine( 'Content-Transfer-Encoding', $encoding );
}
$result .= static::$LE;
return $result;
}
/**
* Return the end of a message boundary.
*
* @param string $boundary
*
* @return string
*/
protected function endBoundary( $boundary ) {
return static::$LE . '--' . $boundary . '--' . static::$LE;
}
/**
* Set the message type.
* PHPMailer only supports some preset message types, not arbitrary MIME structures.
*/
protected function setMessageType() {
$type = [];
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|int $value
*
* @return string
*/
public function headerLine( $name, $value ) {
return $name . ': ' . $value . static::$LE;
}
/**
* Return a formatted mail line.
*
* @param string $value
*
* @return string
*/
public function textLine( $value ) {
return $value . static::$LE;
}
/**
* Add an attachment from a path on the filesystem.
* Never use a user-supplied path to a file!
* Returns false if the file could not be found or read.
* Explicitly *does not* support passing URLs; PHPMailer is not an HTTP client.
* If you need to do that, fetch the resource yourself and pass it in via a local file or string.
*
* @param string $path Path to the attachment
* @param string $name Overrides the attachment name
* @param string $encoding File encoding (see $Encoding)
* @param string $type MIME type, e.g. `image/jpeg`; determined automatically from $path if not specified
* @param string $disposition Disposition to use
*
* @return bool
* @throws Exception
*
*/
public function addAttachment(
$path,
$name = '',
$encoding = self::ENCODING_BASE64,
$type = '',
$disposition = 'attachment'
) {
try {
if ( ! static::fileIsAccessible( $path ) ) {
throw new Exception( $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 = static::filenameToType( $path );
}
$filename = (string) static::mb_pathinfo( $path, PATHINFO_BASENAME );
if ( '' === $name ) {
$name = $filename;
}
if ( ! $this->validateEncoding( $encoding ) ) {
throw new Exception( $this->lang( 'encoding' ) . $encoding );
}
$this->attachment[] = [
0 => $path,
1 => $filename,
2 => $name,
3 => $encoding,
4 => $type,
5 => false, //isStringAttachment
6 => $disposition,
7 => $name,
];
} catch ( Exception $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
* @throws Exception
*
*/
protected function attachAll( $disposition_type, $boundary ) {
//Return text of body
$mime = [];
$cidUniq = [];
$incl = [];
//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 = hash( 'sha256', serialize( $attachment ) );
if ( in_array( $inclhash, $incl, true ) ) {
continue;
}
$incl[] = $inclhash;
$name = $attachment[2];
$encoding = $attachment[3];
$type = $attachment[4];
$disposition = $attachment[6];
$cid = $attachment[7];
if ( 'inline' === $disposition && array_key_exists( $cid, $cidUniq ) ) {
continue;
}
$cidUniq[ $cid ] = true;
$mime[] = sprintf( '--%s%s', $boundary, static::$LE );
//Only include a filename property if we have one
if ( ! empty( $name ) ) {
$mime[] = sprintf(
'Content-Type: %s; name=%s%s',
$type,
static::quotedString( $this->encodeHeader( $this->secureHeader( $name ) ) ),
static::$LE
);
} else {
$mime[] = sprintf(
'Content-Type: %s%s',
$type,
static::$LE
);
}
//RFC1341 part 5 says 7bit is assumed if not specified
if ( static::ENCODING_7BIT !== $encoding ) {
$mime[] = sprintf( 'Content-Transfer-Encoding: %s%s', $encoding, static::$LE );
}
//Only set Content-IDs on inline attachments
if ( (string) $cid !== '' && $disposition === 'inline' ) {
$mime[] = 'Content-ID: <' . $this->encodeHeader( $this->secureHeader( $cid ) ) . '>' . static::$LE;
}
//Allow for bypassing the Content-Disposition header
if ( ! empty( $disposition ) ) {
$encoded_name = $this->encodeHeader( $this->secureHeader( $name ) );
if ( ! empty( $encoded_name ) ) {
$mime[] = sprintf(
'Content-Disposition: %s; filename=%s%s',
$disposition,
static::quotedString( $encoded_name ),
static::$LE . static::$LE
);
} else {
$mime[] = sprintf(
'Content-Disposition: %s%s',
$disposition,
static::$LE . static::$LE
);
}
} else {
$mime[] = static::$LE;
}
//Encode as string attachment
if ( $bString ) {
$mime[] = $this->encodeString( $string, $encoding );
} else {
$mime[] = $this->encodeFile( $path, $encoding );
}
if ( $this->isError() ) {
return '';
}
$mime[] = static::$LE;
}
}
$mime[] = sprintf( '--%s--%s', $boundary, static::$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'
*
* @return string
*/
protected function encodeFile( $path, $encoding = self::ENCODING_BASE64 ) {
try {
if ( ! static::fileIsAccessible( $path ) ) {
throw new Exception( $this->lang( 'file_open' ) . $path, self::STOP_CONTINUE );
}
$file_buffer = file_get_contents( $path );
if ( false === $file_buffer ) {
throw new Exception( $this->lang( 'file_open' ) . $path, self::STOP_CONTINUE );
}
$file_buffer = $this->encodeString( $file_buffer, $encoding );
return $file_buffer;
} catch ( Exception $exc ) {
$this->setError( $exc->getMessage() );
$this->edebug( $exc->getMessage() );
if ( $this->exceptions ) {
throw $exc;
}
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
* @throws Exception
*
*/
public function encodeString( $str, $encoding = self::ENCODING_BASE64 ) {
$encoded = '';
switch ( strtolower( $encoding ) ) {
case static::ENCODING_BASE64:
$encoded = chunk_split(
base64_encode( $str ),
static::STD_LINE_LENGTH,
static::$LE
);
break;
case static::ENCODING_7BIT:
case static::ENCODING_8BIT:
$encoded = static::normalizeBreaks( $str );
//Make sure it ends with a line break
if ( substr( $encoded, - ( strlen( static::$LE ) ) ) !== static::$LE ) {
$encoded .= static::$LE;
}
break;
case static::ENCODING_BINARY:
$encoded = $str;
break;
case static::ENCODING_QUOTED_PRINTABLE:
$encoded = $this->encodeQP( $str );
break;
default:
$this->setError( $this->lang( 'encoding' ) . $encoding );
if ( $this->exceptions ) {
throw new Exception( $this->lang( 'encoding' ) . $encoding );
}
break;
}
return $encoded;
}
/**
* Encode a header value (not including its label) optimally.
* Picks shortest of Q, B, or none. Result includes folding if needed.
* See RFC822 definitions for phrase, comment and text positions.
*
* @param string $str The header value to encode
* @param string $position What context the string will be used in
*
* @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 $encoded;
}
return "\"$encoded\"";
}
$matchcount = preg_match_all( '/[^\040\041\043-\133\135-\176]/', $str, $matches );
break;
/* @noinspection PhpMissingBreakStatementInspection */
case 'comment':
$matchcount = preg_match_all( '/[()"]/', $str, $matches );
//fallthrough
case 'text':
default:
$matchcount += preg_match_all( '/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches );
break;
}
if ( $this->has8bitChars( $str ) ) {
$charset = $this->CharSet;
} else {
$charset = static::CHARSET_ASCII;
}
//Q/B encoding adds 8 chars and the charset ("` =?<charset>?[QB]?<content>?=`").
$overhead = 8 + strlen( $charset );
if ( 'mail' === $this->Mailer ) {
$maxlen = static::MAIL_MAX_LINE_LENGTH - $overhead;
} else {
$maxlen = static::MAX_LINE_LENGTH - $overhead;
}
//Select the encoding that produces the shortest output and/or prevents corruption.
if ( $matchcount > strlen( $str ) / 3 ) {
//More than 1/3 of the content needs encoding, use B-encode.
$encoding = 'B';
} elseif ( $matchcount > 0 ) {
//Less than 1/3 of the content needs encoding, use Q-encode.
$encoding = 'Q';
} elseif ( strlen( $str ) > $maxlen ) {
//No encoding needed, but value exceeds max line length, use Q-encode to prevent corruption.
$encoding = 'Q';
} else {
//No reformatting needed
$encoding = false;
}
switch ( $encoding ) {
case 'B':
if ( $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" ) );
}
$encoded = preg_replace( '/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded );
break;
case 'Q':
$encoded = $this->encodeQ( $str, $position );
$encoded = $this->wrapText( $encoded, $maxlen, true );
$encoded = str_replace( '=' . static::$LE, "\n", trim( $encoded ) );
$encoded = preg_replace( '/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded );
break;
default:
return $str;
}
return trim( static::normalizeBreaks( $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 );
}
//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.
*
* @see 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 ( null === $linebreak ) {
$linebreak = static::$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 );
$offset = 0;
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
return substr( $encoded, 0, - strlen( $linebreak ) );
}
/**
* Encode a string in quoted-printable format.
* According to RFC2045 section 6.7.
*
* @param string $string The text to encode
*
* @return string
*/
public function encodeQP( $string ) {
return static::normalizeBreaks( quoted_printable_encode( $string ) );
}
/**
* Encode a string using Q encoding.
*
* @see http://tools.ietf.org/html/rfc2047#section-4.2
*
* @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( [ "\r", "\n" ], '', $str );
switch ( strtolower( $position ) ) {
case 'phrase':
//RFC 2047 section 5.3
$pattern = '^A-Za-z0-9!*+\/ -';
break;
/*
* RFC 2047 section 5.2.
* Build $pattern without including delimiters and []
*/
/* @noinspection PhpMissingBreakStatementInspection */
case 'comment':
$pattern = '\(\)"';
/* Intentional fall through */
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;
}
$matches = [];
if ( preg_match_all( "/[{$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], true );
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 spaces with _ (more readable than =20)
//RFC 2047 section 4.2(2)
return str_replace( ' ', '_', $encoded );
}
/**
* Add a string or binary attachment (non-filesystem).
* This method can be used to attach ascii or binary data,
* such as a BLOB record from a database.
*
* @param string $string String attachment data
* @param string $filename Name of the attachment
* @param string $encoding File encoding (see $Encoding)
* @param string $type File extension (MIME) type
* @param string $disposition Disposition to use
*
* @return bool True on successfully adding an attachment
* @throws Exception
*
*/
public function addStringAttachment(
$string,
$filename,
$encoding = self::ENCODING_BASE64,
$type = '',
$disposition = 'attachment'
) {
try {
//If a MIME type is not specified, try to work it out from the file name
if ( '' === $type ) {
$type = static::filenameToType( $filename );
}
if ( ! $this->validateEncoding( $encoding ) ) {
throw new Exception( $this->lang( 'encoding' ) . $encoding );
}
//Append to $attachment array
$this->attachment[] = [
0 => $string,
1 => $filename,
2 => static::mb_pathinfo( $filename, PATHINFO_BASENAME ),
3 => $encoding,
4 => $type,
5 => true, //isStringAttachment
6 => $disposition,
7 => 0,
];
} catch ( Exception $exc ) {
$this->setError( $exc->getMessage() );
$this->edebug( $exc->getMessage() );
if ( $this->exceptions ) {
throw $exc;
}
return false;
}
return true;
}
/**
* 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
* @throws Exception
*
*/
public function addEmbeddedImage(
$path,
$cid,
$name = '',
$encoding = self::ENCODING_BASE64,
$type = '',
$disposition = 'inline'
) {
try {
if ( ! static::fileIsAccessible( $path ) ) {
throw new Exception( $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 = static::filenameToType( $path );
}
if ( ! $this->validateEncoding( $encoding ) ) {
throw new Exception( $this->lang( 'encoding' ) . $encoding );
}
$filename = (string) static::mb_pathinfo( $path, PATHINFO_BASENAME );
if ( '' === $name ) {
$name = $filename;
}
//Append to $attachment array
$this->attachment[] = [
0 => $path,
1 => $filename,
2 => $name,
3 => $encoding,
4 => $type,
5 => false, //isStringAttachment
6 => $disposition,
7 => $cid,
];
} catch ( Exception $exc ) {
$this->setError( $exc->getMessage() );
$this->edebug( $exc->getMessage() );
if ( $this->exceptions ) {
throw $exc;
}
return false;
}
return true;
}
/**
* Add an embedded stringified attachment.
* This can include images, sounds, and just about any other document type.
* If your filename doesn't contain an extension, be sure to set the $type to an appropriate MIME type.
*
* @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 A filename for the attachment. If this contains an extension,
* PHPMailer will attempt to set a MIME type for the attachment.
* For example 'file.jpg' would get an 'image/jpeg' MIME type.
* @param string $encoding File encoding (see $Encoding), defaults to 'base64'
* @param string $type MIME type - will be used in preference to any automatically derived type
* @param string $disposition Disposition to use
*
* @return bool True on successfully adding an attachment
* @throws Exception
*
*/
public function addStringEmbeddedImage(
$string,
$cid,
$name = '',
$encoding = self::ENCODING_BASE64,
$type = '',
$disposition = 'inline'
) {
try {
//If a MIME type is not specified, try to work it out from the name
if ( '' === $type && ! empty( $name ) ) {
$type = static::filenameToType( $name );
}
if ( ! $this->validateEncoding( $encoding ) ) {
throw new Exception( $this->lang( 'encoding' ) . $encoding );
}
//Append to $attachment array
$this->attachment[] = [
0 => $string,
1 => $name,
2 => $name,
3 => $encoding,
4 => $type,
5 => true, //isStringAttachment
6 => $disposition,
7 => $cid,
];
} catch ( Exception $exc ) {
$this->setError( $exc->getMessage() );
$this->edebug( $exc->getMessage() );
if ( $this->exceptions ) {
throw $exc;
}
return false;
}
return true;
}
/**
* Validate encodings.
*
* @param string $encoding
*
* @return bool
*/
protected function validateEncoding( $encoding ) {
return in_array(
$encoding,
[
self::ENCODING_7BIT,
self::ENCODING_QUOTED_PRINTABLE,
self::ENCODING_BASE64,
self::ENCODING_8BIT,
self::ENCODING_BINARY,
],
true
);
}
/**
* Check if an embedded attachment is present with this cid.
*
* @param string $cid
*
* @return bool
*/
protected function cidExists( $cid ) {
foreach ( $this->attachment as $attachment ) {
if ( 'inline' === $attachment[6] && $cid === $attachment[7] ) {
return true;
}
}
return false;
}
/**
* Check if an inline attachment is present.
*
* @return bool
*/
public function inlineImageExists() {
foreach ( $this->attachment as $attachment ) {
if ( 'inline' === $attachment[6] ) {
return true;
}
}
return false;
}
/**
* Check if an attachment (non-inline) is present.
*
* @return bool
*/
public function attachmentExists() {
foreach ( $this->attachment as $attachment ) {
if ( 'attachment' === $attachment[6] ) {
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 ) {
$this->RecipientsQueue = array_filter(
$this->RecipientsQueue,
static function ( $params ) use ( $kind ) {
return $params[0] !== $kind;
}
);
}
/**
* Clear all To recipients.
*/
public function clearAddresses() {
foreach ( $this->to as $to ) {
unset( $this->all_recipients[ strtolower( $to[0] ) ] );
}
$this->to = [];
$this->clearQueuedAddresses( 'to' );
}
/**
* Clear all CC recipients.
*/
public function clearCCs() {
foreach ( $this->cc as $cc ) {
unset( $this->all_recipients[ strtolower( $cc[0] ) ] );
}
$this->cc = [];
$this->clearQueuedAddresses( 'cc' );
}
/**
* Clear all BCC recipients.
*/
public function clearBCCs() {
foreach ( $this->bcc as $bcc ) {
unset( $this->all_recipients[ strtolower( $bcc[0] ) ] );
}
$this->bcc = [];
$this->clearQueuedAddresses( 'bcc' );
}
/**
* Clear all ReplyTo recipients.
*/
public function clearReplyTos() {
$this->ReplyTo = [];
$this->ReplyToQueue = [];
}
/**
* Clear all recipient types.
*/
public function clearAllRecipients() {
$this->to = [];
$this->cc = [];
$this->bcc = [];
$this->all_recipients = [];
$this->RecipientsQueue = [];
}
/**
* Clear all filesystem, string, and binary attachments.
*/
public function clearAttachments() {
$this->attachment = [];
}
/**
* Clear all custom headers.
*/
public function clearCustomHeaders() {
$this->CustomHeader = [];
}
/**
* Add an error message to the error container.
*
* @param string $msg
*/
protected function setError( $msg ) {
++ $this->error_count;
if ( 'smtp' === $this->Mailer && 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
*/
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 = '';
if ( ! empty( $this->Hostname ) ) {
$result = $this->Hostname;
} elseif ( isset( $_SERVER ) && array_key_exists( 'SERVER_NAME', $_SERVER ) ) {
$result = $_SERVER['SERVER_NAME'];
} elseif ( function_exists( 'gethostname' ) && gethostname() !== false ) {
$result = gethostname();
} elseif ( php_uname( 'n' ) !== false ) {
$result = php_uname( 'n' );
}
if ( ! static::isValidHost( $result ) ) {
return 'localhost.localdomain';
}
return $result;
}
/**
* Validate whether a string contains a valid value to use as a hostname or IP address.
* IPv6 addresses must include [], e.g. `[::1]`, not just `::1`.
*
* @param string $host The host name or IP address to check
*
* @return bool
*/
public static function isValidHost( $host ) {
//Simple syntax limits
if (
empty( $host )
|| ! is_string( $host )
|| strlen( $host ) > 256
|| ! preg_match( '/^([a-zA-Z\d.-]*|\[[a-fA-F\d:]+])$/', $host )
) {
return false;
}
//Looks like a bracketed IPv6 address
if ( strlen( $host ) > 2 && substr( $host, 0, 1 ) === '[' && substr( $host, - 1, 1 ) === ']' ) {
return filter_var( substr( $host, 1, - 1 ), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6 ) !== false;
}
//If removing all the dots results in a numeric string, it must be an IPv4 address.
//Need to check this first because otherwise things like `999.0.0.0` are considered valid host names
if ( is_numeric( str_replace( '.', '', $host ) ) ) {
//Is it a valid IPv4 address?
return filter_var( $host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) !== false;
}
if ( filter_var( 'http://' . $host, FILTER_VALIDATE_URL ) !== false ) {
//Is it a syntactically valid hostname?
return true;
}
return false;
}
/**
* Get an error message in the current language.
*
* @param string $key
*
* @return string
*/
protected function lang( $key ) {
if ( count( $this->language ) < 1 ) {
$this->setLanguage(); //Set the default language
}
if ( array_key_exists( $key, $this->language ) ) {
if ( 'smtp_connect_failed' === $key ) {
//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 ];
}
//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;
}
/**
* 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|null $value Header value
*
* @throws Exception
*/
public function addCustomHeader( $name, $value = null ) {
if ( null === $value && strpos( $name, ':' ) !== false ) {
//Value passed in as name:value
list( $name, $value ) = explode( ':', $name, 2 );
}
$name = trim( $name );
$value = ( null === $value ) ? '' : trim( $value );
//Ensure name is not empty, and that neither name nor value contain line breaks
if ( empty( $name ) || strpbrk( $name . $value, "\r\n" ) !== false ) {
if ( $this->exceptions ) {
throw new Exception( 'Invalid header name or value' );
}
return false;
}
$this->CustomHeader[] = [ $name, $value ];
return true;
}
/**
* 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)
* Converts data-uri images into embedded attachments.
* 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
*
* @return string The transformed message body
*
* @throws Exception
*
* @see PHPMailer::html2text()
*/
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
//e.g. "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
$match = [];
if ( preg_match( '#^data:(image/(?:jpe?g|gif|png));?(base64)?,(.+)#', $url, $match ) ) {
if ( count( $match ) === 4 && static::ENCODING_BASE64 === $match[2] ) {
$data = base64_decode( $match[3] );
} elseif ( '' === $match[2] ) {
$data = rawurldecode( $match[3] );
} else {
//Not recognised so leave it alone
continue;
}
//Hash the decoded data, not the URL, so that the same data-URI image used in multiple places
//will only be embedded once, even if it used a different encoding
$cid = substr( hash( 'sha256', $data ), 0, 32 ) . '@phpmailer.0'; //RFC2392 S 2
if ( ! $this->cidExists( $cid ) ) {
$this->addStringEmbeddedImage(
$data,
$cid,
'embed' . $imgindex,
static::ENCODING_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
&& 0 !== strpos( $url, 'cid:' )
//Do not change absolute URLs, including anonymous protocol
&& ! preg_match( '#^[a-z][a-z0-9+.-]*:?//#i', $url )
) {
$filename = static::mb_pathinfo( $url, PATHINFO_BASENAME );
$directory = dirname( $url );
if ( '.' === $directory ) {
$directory = '';
}
//RFC2392 S 2
$cid = substr( hash( 'sha256', $url ), 0, 32 ) . '@phpmailer.0';
if ( strlen( $basedir ) > 1 && '/' !== substr( $basedir, - 1 ) ) {
$basedir .= '/';
}
if ( strlen( $directory ) > 1 && '/' !== substr( $directory, - 1 ) ) {
$directory .= '/';
}
if (
$this->addEmbeddedImage(
$basedir . $directory . $filename,
$cid,
$filename,
static::ENCODING_BASE64,
static::_mime_types( (string) static::mb_pathinfo( $filename, PATHINFO_EXTENSION ) )
)
) {
$message = preg_replace(
'/' . $images[1][ $imgindex ] . '=["\']' . preg_quote( $url, '/' ) . '["\']/Ui',
$images[1][ $imgindex ] . '="cid:' . $cid . '"',
$message
);
}
}
}
}
$this->isHTML();
//Convert all message body line breaks to LE, makes quoted-printable encoding work much better
$this->Body = static::normalizeBreaks( $message );
$this->AltBody = static::normalizeBreaks( $this->html2text( $message, $advanced ) );
if ( ! $this->alternativeExists() ) {
$this->AltBody = 'This is an HTML-only message. To view it, activate HTML in your email application.'
. static::$LE;
}
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 removed for license reasons in #232.
* Example usage:
*
* ```php
* //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();
* });
* ```
*
* @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
*/
public static function _mime_types( $ext = '' ) {
$mimes = [
'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',
'm4a' => 'audio/mp4',
'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',
'mka' => 'audio/x-matroska',
'bmp' => 'image/bmp',
'gif' => 'image/gif',
'jpeg' => 'image/jpeg',
'jpe' => 'image/jpeg',
'jpg' => 'image/jpeg',
'png' => 'image/png',
'tiff' => 'image/tiff',
'tif' => 'image/tiff',
'webp' => 'image/webp',
'avif' => 'image/avif',
'heif' => 'image/heif',
'heifs' => 'image/heif-sequence',
'heic' => 'image/heic',
'heics' => 'image/heic-sequence',
'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',
'ics' => 'text/calendar',
'xml' => 'text/xml',
'xsl' => 'text/xml',
'wmv' => 'video/x-ms-wmv',
'mpeg' => 'video/mpeg',
'mpe' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mp4' => 'video/mp4',
'm4v' => 'video/mp4',
'mov' => 'video/quicktime',
'qt' => 'video/quicktime',
'rv' => 'video/vnd.rn-realvideo',
'avi' => 'video/x-msvideo',
'movie' => 'video/x-sgi-movie',
'webm' => 'video/webm',
'mkv' => 'video/x-matroska',
];
$ext = strtolower( $ext );
if ( array_key_exists( $ext, $mimes ) ) {
return $mimes[ $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
*/
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 );
}
$ext = static::mb_pathinfo( $filename, PATHINFO_EXTENSION );
return static::_mime_types( $ext );
}
/**
* Multi-byte-safe pathinfo replacement.
* Drop-in replacement for pathinfo(), but multibyte- and cross-platform-safe.
*
* @see 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
*
* @return string|array
*/
public static function mb_pathinfo( $path, $options = null ) {
$ret = [ 'dirname' => '', 'basename' => '', 'extension' => '', 'filename' => '' ];
$pathinfo = [];
if ( preg_match( '#^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^.\\\\/]+?)|))[\\\\/.]*$#m', $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', static::ENCRYPTION_STARTTLS);`
* is the same as:
* `$mail->SMTPSecure = static::ENCRYPTION_STARTTLS;`.
*
* @param string $name The property name to set
* @param mixed $value The value to set the property to
*
* @return bool
*/
public function set( $name, $value = '' ) {
if ( property_exists( $this, $name ) ) {
$this->$name = $value;
return true;
}
$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( [ "\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 $breaktype What kind of line break to use; defaults to static::$LE
*
* @return string
*/
public static function normalizeBreaks( $text, $breaktype = null ) {
if ( null === $breaktype ) {
$breaktype = static::$LE;
}
//Normalise to \n
$text = str_replace( [ self::CRLF, "\r" ], "\n", $text );
//Now convert LE as needed
if ( "\n" !== $breaktype ) {
$text = str_replace( "\n", $breaktype, $text );
}
return $text;
}
/**
* Remove trailing breaks from a string.
*
* @param string $text
*
* @return string The text to remove breaks from
*/
public static function stripTrailingWSP( $text ) {
return rtrim( $text, " \r\n\t" );
}
/**
* Return the current line break format string.
*
* @return string
*/
public static function getLE() {
return static::$LE;
}
/**
* Set the line break format string, e.g. "\r\n".
*
* @param string $le
*/
protected static function setLE( $le ) {
static::$LE = $le;
}
/**
* 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 = '';
$len = strlen( $txt );
for ( $i = 0; $i < $len; ++ $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
*
* @return string The DKIM signature value
* @throws Exception
*
*/
public function DKIM_Sign( $signHeader ) {
if ( ! defined( 'PKCS7_TEXT' ) ) {
if ( $this->exceptions ) {
throw new Exception( $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 );
}
if ( openssl_sign( $signHeader, $signature, $privKey, 'sha256WithRSAEncryption' ) ) {
if ( \PHP_MAJOR_VERSION < 8 ) {
openssl_pkey_free( $privKey );
}
return base64_encode( $signature );
}
if ( \PHP_MAJOR_VERSION < 8 ) {
openssl_pkey_free( $privKey );
}
return '';
}
/**
* Generate a DKIM canonicalization header.
* Uses the 'relaxed' algorithm from RFC6376 section 3.4.2.
* Canonicalized headers should *always* use CRLF, regardless of mailer setting.
*
* @see https://tools.ietf.org/html/rfc6376#section-3.4.2
*
* @param string $signHeader Header
*
* @return string
*/
public function DKIM_HeaderC( $signHeader ) {
//Normalize breaks to CRLF (regardless of the mailer)
$signHeader = static::normalizeBreaks( $signHeader, self::CRLF );
//Unfold header lines
//Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]`
//@see https://tools.ietf.org/html/rfc5322#section-2.2
//That means this may break if you do something daft like put vertical tabs in your headers.
$signHeader = preg_replace( '/\r\n[ \t]+/', ' ', $signHeader );
//Break headers out into an array
$lines = explode( self::CRLF, $signHeader );
foreach ( $lines as $key => $line ) {
//If the header is missing a :, skip it as it's invalid
//This is likely to happen because the explode() above will also split
//on the trailing LE, leaving an empty line
if ( strpos( $line, ':' ) === false ) {
continue;
}
list( $heading, $value ) = explode( ':', $line, 2 );
//Lower-case header name
$heading = strtolower( $heading );
//Collapse white space within the value, also convert WSP to space
$value = preg_replace( '/[ \t]+/', ' ', $value );
//RFC6376 is slightly unclear here - it says to delete space at the *end* of each value
//But then says to delete space before and after the colon.
//Net result is the same as trimming both ends of the value.
//By elimination, the same applies to the field name
$lines[ $key ] = trim( $heading, " \t" ) . ':' . trim( $value, " \t" );
}
return implode( self::CRLF, $lines );
}
/**
* Generate a DKIM canonicalization body.
* Uses the 'simple' algorithm from RFC6376 section 3.4.3.
* Canonicalized bodies should *always* use CRLF, regardless of mailer setting.
*
* @see https://tools.ietf.org/html/rfc6376#section-3.4.3
*
* @param string $body Message Body
*
* @return string
*/
public function DKIM_BodyC( $body ) {
if ( empty( $body ) ) {
return self::CRLF;
}
//Normalize line endings to CRLF
$body = static::normalizeBreaks( $body, self::CRLF );
//Reduce multiple trailing line breaks to a single one
return static::stripTrailingWSP( $body ) . self::CRLF;
}
/**
* 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
* @throws Exception
*
*/
public function DKIM_Add( $headers_line, $subject, $body ) {
$DKIMsignatureType = 'rsa-sha256'; //Signature & hash algorithms
$DKIMcanonicalization = 'relaxed/simple'; //Canonicalization methods of header & body
$DKIMquery = 'dns/txt'; //Query method
$DKIMtime = time();
//Always sign these headers without being asked
//Recommended list from https://tools.ietf.org/html/rfc6376#section-5.4.1
$autoSignHeaders = [
'from',
'to',
'cc',
'date',
'subject',
'reply-to',
'message-id',
'content-type',
'mime-version',
'x-mailer',
];
if ( stripos( $headers_line, 'Subject' ) === false ) {
$headers_line .= 'Subject: ' . $subject . static::$LE;
}
$headerLines = explode( static::$LE, $headers_line );
$currentHeaderLabel = '';
$currentHeaderValue = '';
$parsedHeaders = [];
$headerLineIndex = 0;
$headerLineCount = count( $headerLines );
foreach ( $headerLines as $headerLine ) {
$matches = [];
if ( preg_match( '/^([^ \t]*?)(?::[ \t]*)(.*)$/', $headerLine, $matches ) ) {
if ( $currentHeaderLabel !== '' ) {
//We were previously in another header; This is the start of a new header, so save the previous one
$parsedHeaders[] = [ 'label' => $currentHeaderLabel, 'value' => $currentHeaderValue ];
}
$currentHeaderLabel = $matches[1];
$currentHeaderValue = $matches[2];
} elseif ( preg_match( '/^[ \t]+(.*)$/', $headerLine, $matches ) ) {
//This is a folded continuation of the current header, so unfold it
$currentHeaderValue .= ' ' . $matches[1];
}
++ $headerLineIndex;
if ( $headerLineIndex >= $headerLineCount ) {
//This was the last line, so finish off this header
$parsedHeaders[] = [ 'label' => $currentHeaderLabel, 'value' => $currentHeaderValue ];
}
}
$copiedHeaders = [];
$headersToSignKeys = [];
$headersToSign = [];
foreach ( $parsedHeaders as $header ) {
//Is this header one that must be included in the DKIM signature?
if ( in_array( strtolower( $header['label'] ), $autoSignHeaders, true ) ) {
$headersToSignKeys[] = $header['label'];
$headersToSign[] = $header['label'] . ': ' . $header['value'];
if ( $this->DKIM_copyHeaderFields ) {
$copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC
str_replace( '|', '=7C', $this->DKIM_QP( $header['value'] ) );
}
continue;
}
//Is this an extra custom header we've been asked to sign?
if ( in_array( $header['label'], $this->DKIM_extraHeaders, true ) ) {
//Find its value in custom headers
foreach ( $this->CustomHeader as $customHeader ) {
if ( $customHeader[0] === $header['label'] ) {
$headersToSignKeys[] = $header['label'];
$headersToSign[] = $header['label'] . ': ' . $header['value'];
if ( $this->DKIM_copyHeaderFields ) {
$copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC
str_replace( '|', '=7C', $this->DKIM_QP( $header['value'] ) );
}
//Skip straight to the next header
continue 2;
}
}
}
}
$copiedHeaderFields = '';
if ( $this->DKIM_copyHeaderFields && count( $copiedHeaders ) > 0 ) {
//Assemble a DKIM 'z' tag
$copiedHeaderFields = ' z=';
$first = true;
foreach ( $copiedHeaders as $copiedHeader ) {
if ( ! $first ) {
$copiedHeaderFields .= static::$LE . ' |';
}
//Fold long values
if ( strlen( $copiedHeader ) > self::STD_LINE_LENGTH - 3 ) {
$copiedHeaderFields .= substr(
chunk_split( $copiedHeader, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS ),
0,
- strlen( static::$LE . self::FWS )
);
} else {
$copiedHeaderFields .= $copiedHeader;
}
$first = false;
}
$copiedHeaderFields .= ';' . static::$LE;
}
$headerKeys = ' h=' . implode( ':', $headersToSignKeys ) . ';' . static::$LE;
$headerValues = implode( static::$LE, $headersToSign );
$body = $this->DKIM_BodyC( $body );
//Base64 of packed binary SHA-256 hash of body
$DKIMb64 = base64_encode( pack( 'H*', hash( 'sha256', $body ) ) );
$ident = '';
if ( '' !== $this->DKIM_identity ) {
$ident = ' i=' . $this->DKIM_identity . ';' . static::$LE;
}
//The DKIM-Signature header is included in the signature *except for* the value of the `b` tag
//which is appended after calculating the signature
//https://tools.ietf.org/html/rfc6376#section-3.5
$dkimSignatureHeader = 'DKIM-Signature: v=1;' .
' d=' . $this->DKIM_domain . ';' .
' s=' . $this->DKIM_selector . ';' . static::$LE .
' a=' . $DKIMsignatureType . ';' .
' q=' . $DKIMquery . ';' .
' t=' . $DKIMtime . ';' .
' c=' . $DKIMcanonicalization . ';' . static::$LE .
$headerKeys .
$ident .
$copiedHeaderFields .
' bh=' . $DKIMb64 . ';' . static::$LE .
' b=';
//Canonicalize the set of headers
$canonicalizedHeaders = $this->DKIM_HeaderC(
$headerValues . static::$LE . $dkimSignatureHeader
);
$signature = $this->DKIM_Sign( $canonicalizedHeaders );
$signature = trim( chunk_split( $signature, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS ) );
return static::normalizeBreaks( $dkimSignatureHeader . $signature );
}
/**
* Detect if a string contains a line longer than the maximum line length
* allowed by RFC 2822 section 2.1.1.
*
* @param string $str
*
* @return bool
*/
public static function hasLineLongerThanMax( $str ) {
return (bool) preg_match( '/^(.{' . ( self::MAX_LINE_LENGTH + strlen( static::$LE ) ) . ',})/m', $str );
}
/**
* If a string contains any "special" characters, double-quote the name,
* and escape any double quotes with a backslash.
*
* @param string $str
*
* @return string
*
* @see RFC822 3.4.1
*/
public static function quotedString( $str ) {
if ( preg_match( '/[ ()<>@,;:"\/\[\]?=]/', $str ) ) {
//If the string contains any of these chars, it must be double-quoted
//and any double quotes must be escaped with a backslash
return '"' . str_replace( '"', '\\"', $str ) . '"';
}
//Return the string untouched, it doesn't need quoting
return $str;
}
/**
* Allows for public read access to 'to' property.
* 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.
* 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.
* 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.
* 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.
* 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
* @param array $extra
*/
protected function doCallback( $isSent, $to, $cc, $bcc, $subject, $body, $from, $extra ) {
if ( ! empty( $this->action_function ) && is_callable( $this->action_function ) ) {
call_user_func( $this->action_function, $isSent, $to, $cc, $bcc, $subject, $body, $from, $extra );
}
}
/**
* Get the OAuth instance.
*
* @return OAuth
*/
public function getOAuth() {
return $this->oauth;
}
/**
* Set an OAuth instance.
*/
public function setOAuth( OAuth $oauth ) {
$this->oauth = $oauth;
}
}