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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 07:56:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 07:56:49 +0000
commita415c29efee45520ae252d2aa28f1083a521cd7b (patch)
treef4ade4b6668ecc0765de7e1424f7c1427ad433ff /wp-includes/PHPMailer
parentInitial commit. (diff)
downloadwordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.tar.xz
wordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.zip
Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wp-includes/PHPMailer')
-rw-r--r--wp-includes/PHPMailer/Exception.php40
-rw-r--r--wp-includes/PHPMailer/PHPMailer.php5128
-rw-r--r--wp-includes/PHPMailer/SMTP.php1466
3 files changed, 6634 insertions, 0 deletions
diff --git a/wp-includes/PHPMailer/Exception.php b/wp-includes/PHPMailer/Exception.php
new file mode 100644
index 0000000..52eaf95
--- /dev/null
+++ b/wp-includes/PHPMailer/Exception.php
@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * PHPMailer Exception 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 exception handler.
+ *
+ * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
+ */
+class Exception extends \Exception
+{
+ /**
+ * Prettify error message output.
+ *
+ * @return string
+ */
+ public function errorMessage()
+ {
+ return '<strong>' . htmlspecialchars($this->getMessage(), ENT_COMPAT | ENT_HTML401) . "</strong><br />\n";
+ }
+}
diff --git a/wp-includes/PHPMailer/PHPMailer.php b/wp-includes/PHPMailer/PHPMailer.php
new file mode 100644
index 0000000..011fa92
--- /dev/null
+++ b/wp-includes/PHPMailer/PHPMailer.php
@@ -0,0 +1,5128 @@
+<?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 = '';
+
+ /**
+ * The From name of the message.
+ *
+ * @var string
+ */
+ public $FromName = '';
+
+ /**
+ * 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 authentication type. Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2.
+ * If not specified, the first one from that list that the server supports will be selected.
+ *
+ * @var string
+ */
+ public $AuthType = '';
+
+ /**
+ * An implementation of the PHPMailer OAuthTokenProvider interface.
+ *
+ * @var OAuthTokenProvider
+ */
+ 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 text strings for the current language.
+ *
+ * @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 $uniqueid = '';
+
+ /**
+ * The PHPMailer Version number.
+ *
+ * @var string
+ */
+ const VERSION = '6.8.1';
+
+ /**
+ * Error severity: message only, continue processing.
+ *
+ * @var int
+ */
+ const STOP_MESSAGE = 0;
+
+ /**
+ * Error severity: message, likely ok to continue processing.
+ *
+ * @var int
+ */
+ const STOP_CONTINUE = 1;
+
+ /**
+ * Error severity: message, plus full stop, critical error reached.
+ *
+ * @var int
+ */
+ const STOP_CRITICAL = 2;
+
+ /**
+ * The SMTP standard CRLF line break.
+ * If you want to change line break format, change static::$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 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 ((int)ini_get('mbstring.func_overload') & 1) { // phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecated
+ $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 $result;
+ }
+
+ /**
+ * Output debugging info via a user-defined method.
+ * Only generates output if debug output is enabled.
+ *
+ * @see PHPMailer::$Debugoutput
+ * @see PHPMailer::$SMTPDebug
+ *
+ * @param string $str
+ */
+ protected function edebug($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 $name
+ *
+ * @throws Exception
+ *
+ * @return bool true on success, false if address already used or invalid in some way
+ */
+ public function addAddress($address, $name = '')
+ {
+ return $this->addOrEnqueueAnAddress('to', $address, $name);
+ }
+
+ /**
+ * Add a "CC" address.
+ *
+ * @param string $address The email address to send to
+ * @param string $name
+ *
+ * @throws Exception
+ *
+ * @return bool true on success, false if address already used or invalid in some way
+ */
+ public function addCC($address, $name = '')
+ {
+ return $this->addOrEnqueueAnAddress('cc', $address, $name);
+ }
+
+ /**
+ * Add a "BCC" address.
+ *
+ * @param string $address The email address to send to
+ * @param string $name
+ *
+ * @throws Exception
+ *
+ * @return bool true on success, false if address already used or invalid in some way
+ */
+ public function addBCC($address, $name = '')
+ {
+ return $this->addOrEnqueueAnAddress('bcc', $address, $name);
+ }
+
+ /**
+ * Add a "Reply-To" address.
+ *
+ * @param string $address The email address to reply to
+ * @param string $name
+ *
+ * @throws Exception
+ *
+ * @return bool true on success, false if address already used or invalid in some way
+ */
+ public function addReplyTo($address, $name = '')
+ {
+ return $this->addOrEnqueueAnAddress('Reply-To', $address, $name);
+ }
+
+ /**
+ * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer
+ * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still
+ * be modified after calling this function), addition of such addresses is delayed until send().
+ * Addresses that have been added already return false, but do not throw exceptions.
+ *
+ * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo'
+ * @param string $address The email address
+ * @param string $name An optional username associated with the address
+ *
+ * @throws Exception
+ *
+ * @return bool true on success, false if address already used or invalid in some way
+ */
+ protected function addOrEnqueueAnAddress($kind, $address, $name)
+ {
+ $pos = false;
+ if ($address !== null) {
+ $address = trim($address);
+ $pos = strrpos($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;
+ }
+ if ($name !== null && is_string($name)) {
+ $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
+ } else {
+ $name = '';
+ }
+ $params = [$kind, $address, $name];
+ //Enqueue addresses with IDN until we know the PHPMailer::$CharSet.
+ //Domain is assumed to be whatever is after the last @ symbol in the address
+ 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);
+ }
+
+ /**
+ * Set the boundaries to use for delimiting MIME parts.
+ * If you override this, ensure you set all 3 boundaries to unique values.
+ * The default boundaries include a "=_" sequence which cannot occur in quoted-printable bodies,
+ * as suggested by https://www.rfc-editor.org/rfc/rfc2045#section-6.7
+ *
+ * @return void
+ */
+ public function setBoundaries()
+ {
+ $this->uniqueid = $this->generateId();
+ $this->boundary[1] = 'b1=_' . $this->uniqueid;
+ $this->boundary[2] = 'b2=_' . $this->uniqueid;
+ $this->boundary[3] = 'b3=_' . $this->uniqueid;
+ }
+
+ /**
+ * Add an address to one of the recipient arrays or to the ReplyTo array.
+ * Addresses that have been added already return false, but do not throw exceptions.
+ *
+ * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo'
+ * @param string $address The email address to send, resp. to reply to
+ * @param string $name
+ *
+ * @throws Exception
+ *
+ * @return bool true on success, false if address already used or invalid in some way
+ */
+ protected function addAnAddress($kind, $address, $name = '')
+ {
+ if (!in_array($kind, ['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
+ * @param string $charset The charset to use when decoding the address list string.
+ *
+ * @return array
+ */
+ public static function parseAddresses($addrstr, $useimap = true, $charset = self::CHARSET_ISO88591)
+ {
+ $addresses = [];
+ if ($useimap && function_exists('imap_rfc822_parse_adrlist')) {
+ //Use this built-in parser if it's available
+ $list = imap_rfc822_parse_adrlist($addrstr, '');
+ // Clear any potential IMAP errors to get rid of notices being thrown at end of script.
+ imap_errors();
+ 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') &&
+ //Check for a Mbstring constant rather than using extension_loaded, which is sometimes disabled
+ defined('MB_CASE_UPPER') &&
+ preg_match('/^=\?.*\?=$/s', $address->personal)
+ ) {
+ $origCharset = mb_internal_encoding();
+ mb_internal_encoding($charset);
+ //Undo any RFC2047-encoded spaces-as-underscores
+ $address->personal = str_replace('_', '=20', $address->personal);
+ //Decode the name
+ $address->personal = mb_decode_mimeheader($address->personal);
+ mb_internal_encoding($origCharset);
+ }
+
+ $addresses[] = [
+ 'name' => (property_exists($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($email)) {
+ //Check for a Mbstring constant rather than using extension_loaded, which is sometimes disabled
+ //If this name is encoded, decode it
+ if (defined('MB_CASE_UPPER') && preg_match('/^=\?.*\?=$/s', $name)) {
+ $origCharset = mb_internal_encoding();
+ mb_internal_encoding($charset);
+ //Undo any RFC2047-encoded spaces-as-underscores
+ $name = str_replace('_', '=20', $name);
+ //Decode the name
+ $name = mb_decode_mimeheader($name);
+ mb_internal_encoding($origCharset);
+ }
+ $addresses[] = [
+ //Remove any surrounding quotes and spaces from the name
+ 'name' => trim($name, '\'" '),
+ 'address' => $email,
+ ];
+ }
+ }
+ }
+ }
+
+ return $addresses;
+ }
+
+ /**
+ * Set the From and FromName properties.
+ *
+ * @param string $address
+ * @param string $name
+ * @param bool $auto Whether to also set the Sender address, defaults to true
+ *
+ * @throws Exception
+ *
+ * @return bool
+ */
+ public function setFrom($address, $name = '', $auto = true)
+ {
+ $address = trim((string)$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::$CharSet.
+ * This function silently returns unmodified address if:
+ * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)
+ * - Conversion to punycode is impossible (e.g. required PHP functions are not available)
+ * or fails for any reason (e.g. domain contains characters not allowed in an IDN).
+ *
+ * @see PHPMailer::$CharSet
+ *
+ * @param string $address The email address to convert
+ *
+ * @return string The encoded address in ASCII form
+ */
+ public function punyencodeAddress($address)
+ {
+ //Verify we have required functions, CharSet, and at-sign.
+ $pos = strrpos($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,
+ \IDNA_DEFAULT | \IDNA_USE_STD3_RULES | \IDNA_CHECK_BIDI |
+ \IDNA_CHECK_CONTEXTJ | \IDNA_NONTRANSITIONAL_TO_ASCII,
+ \INTL_IDNA_VARIANT_UTS46
+ );
+ } elseif (defined('INTL_IDNA_VARIANT_2003')) {
+ //Fall back to this old, deprecated/removed encoding
+ // phpcs:ignore PHPCompatibility.Constants.RemovedConstants.intl_idna_variant_2003Deprecated
+ $punycode = idn_to_ascii($domain, $errorcode, \INTL_IDNA_VARIANT_2003);
+ } else {
+ //Fall back to a default we don't know about
+ // phpcs:ignore PHPCompatibility.ParameterValues.NewIDNVariantDefault.NotSet
+ $punycode = idn_to_ascii($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 $Mailer.
+ *
+ * @throws Exception
+ *
+ * @return bool false on error - See the ErrorInfo property for details of the error
+ */
+ public function send()
+ {
+ try {
+ if (!$this->preSend()) {
+ return false;
+ }
+
+ return $this->postSend();
+ } catch (Exception $exc) {
+ $this->mailHeader = '';
+ $this->setError($exc->getMessage());
+ if ($this->exceptions) {
+ throw $exc;
+ }
+
+ return false;
+ }
+ }
+
+ /**
+ * Prepare a message for sending.
+ *
+ * @throws Exception
+ *
+ * @return bool
+ */
+ 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' === $this->Mailer
+ && ((\PHP_VERSION_ID >= 70000 && \PHP_VERSION_ID < 70017)
+ || (\PHP_VERSION_ID >= 70100 && \PHP_VERSION_ID < 70103))
+ && ini_get('mail.add_x_header') === '1'
+ && stripos(PHP_OS, 'WIN') === 0
+ ) {
+ trigger_error($this->lang('buggy_php'), 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 $exc;
+ }
+
+ return false;
+ }
+ }
+
+ /**
+ * Actually send a message via the selected mechanism.
+ *
+ * @throws Exception
+ *
+ * @return bool
+ */
+ public function postSend()
+ {
+ try {
+ //Choose the mailer and send through it
+ switch ($this->Mailer) {
+ case 'sendmail':
+ case 'qmail':
+ return $this->sendmailSend($this->MIMEHeader, $this->MIMEBody);
+ case 'smtp':
+ return $this->smtpSend($this->MIMEHeader, $this->MIMEBody);
+ case 'mail':
+ return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
+ default:
+ $sendMethod = $this->Mailer . 'Send';
+ if (method_exists($this, $sendMethod)) {
+ return $this->{$sendMethod}($this->MIMEHeader, $this->MIMEBody);
+ }
+
+ return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
+ }
+ } catch (Exception $exc) {
+ $this->setError($exc->getMessage());
+ $this->edebug($exc->getMessage());
+ if ($this->Mailer === 'smtp' && $this->SMTPKeepAlive == true && $this->smtp->connected()) {
+ $this->smtp->reset();
+ }
+ if ($this->exceptions) {
+ throw $exc;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Send mail using the $Sendmail program.
+ *
+ * @see PHPMailer::$Sendmail
+ *
+ * @param string $header The message headers
+ * @param string $body The message body
+ *
+ * @throws Exception
+ *
+ * @return bool
+ */
+ protected function sendmailSend($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
+
+ //PHP 5.6 workaround
+ $sendmail_from_value = ini_get('sendmail_from');
+ if (empty($this->Sender) && !empty($sendmail_from_value)) {
+ //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, true, $this->CharSet);
+ $this->doCallback(
+ ($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)
+ {
+ //It's not possible to use shell commands safely (which includes the mail() function) without escapeshellarg,
+ //but some hosting providers disable it, creating a security problem that we don't want to have to deal with,
+ //so we don't.
+ if (!function_exists('escapeshellarg') || !function_exists('escapeshellcmd')) {
+ return false;
+ }
+
+ 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;
+ }
+ $readable = is_file($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 = trim(implode(', ', $toArr));
+
+ //If there are no To-addresses (e.g. when sending only to BCC-addresses)
+ //the following should be added to get a correct DKIM-signature.
+ //Compare with $this->preSend()
+ if ($to === '') {
+ $to = 'undisclosed-recipients:;';
+ }
+
+ $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.
+
+ //PHP 5.6 workaround
+ $sendmail_from_value = ini_get('sendmail_from');
+ if (empty($this->Sender) && !empty($sendmail_from_value)) {
+ //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, true, $this->CharSet);
+ $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.
+ *
+ * @see PHPMailer::setSMTPInstance() to use a different class.
+ *
+ * @uses \PHPMailer\PHPMailer\SMTP
+ *
+ * @param string $header The message headers
+ * @param string $body The message body
+ *
+ * @throws Exception
+ *
+ * @return bool
+ */
+ protected function smtpSend($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 $options An array of options compatible with stream_context_create()
+ *
+ * @throws Exception
+ *
+ * @uses \PHPMailer\PHPMailer\SMTP
+ *
+ * @return bool
+ */
+ public function smtpConnect($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);
+ if ($this->Host === null) {
+ $this->Host = 'localhost';
+ }
+ $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()) {
+ $message = $this->getSmtpErrorMessage('connect_host');
+ throw new Exception($message);
+ }
+ //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 $lastexception;
+ }
+ if ($this->exceptions) {
+ // no exception was thrown, likely $this->smtp->connect() failed
+ $message = $this->getSmtpErrorMessage('connect_host');
+ throw new Exception($message);
+ }
+
+ 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.
+ * The default language is English.
+ *
+ * @param string $langcode ISO 639-1 2-character language code (e.g. French is "fr")
+ * Optionally, the language code can be enhanced with a 4-character
+ * script annotation and/or a 2-character country annotation.
+ * @param string $lang_path Path to the language file directory, with trailing separator (slash)
+ * Do not set this from user input!
+ *
+ * @return bool Returns true if the requested language was loaded, false otherwise.
+ */
+ public function setLanguage($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
+ $PHPMAILER_LANG = [
+ 'authenticate' => 'SMTP Error: Could not authenticate.',
+ 'buggy_php' => 'Your version of PHP is affected by a bug that may result in corrupted messages.' .
+ ' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' .
+ ' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.',
+ 'connect_host' => 'SMTP Error: Could not connect to SMTP host.',
+ 'data_not_accepted' => 'SMTP Error: data not accepted.',
+ 'empty_message' => 'Message body empty',
+ 'encoding' => 'Unknown encoding: ',
+ 'execute' => 'Could not execute: ',
+ 'extension_missing' => 'Extension missing: ',
+ 'file_access' => 'Could not access file: ',
+ 'file_open' => 'File Error: Could not open file: ',
+ 'from_failed' => 'The following From address failed: ',
+ 'instantiate' => 'Could not instantiate mail function.',
+ 'invalid_address' => 'Invalid address: ',
+ 'invalid_header' => 'Invalid header name or value',
+ 'invalid_hostentry' => 'Invalid hostentry: ',
+ 'invalid_host' => 'Invalid host: ',
+ 'mailer_not_supported' => ' mailer is not supported.',
+ 'provide_address' => 'You must provide at least one recipient email address.',
+ 'recipients_failed' => 'SMTP Error: The following recipients failed: ',
+ 'signing' => 'Signing Error: ',
+ 'smtp_code' => 'SMTP code: ',
+ 'smtp_code_ex' => 'Additional SMTP info: ',
+ 'smtp_connect_failed' => 'SMTP connect() failed.',
+ 'smtp_detail' => 'Detail: ',
+ 'smtp_error' => 'SMTP server error: ',
+ 'variable_set' => 'Cannot set or reset variable: ',
+ ];
+ if (empty($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
+ $foundlang = true;
+ $langcode = strtolower($langcode);
+ if (
+ !preg_match('/^(?P<lang>[a-z]{2})(?P<script>_[a-z]{4})?(?P<country>_[a-z]{2})?$/', $langcode, $matches)
+ && $langcode !== 'en'
+ ) {
+ $foundlang = false;
+ $langcode = 'en';
+ }
+
+ //There is no English translation file
+ if ('en' !== $langcode) {
+ $langcodes = [];
+ if (!empty($matches['script']) && !empty($matches['country'])) {
+ $langcodes[] = $matches['lang'] . $matches['script'] . $matches['country'];
+ }
+ if (!empty($matches['country'])) {
+ $langcodes[] = $matches['lang'] . $matches['country'];
+ }
+ if (!empty($matches['script'])) {
+ $langcodes[] = $matches['lang'] . $matches['script'];
+ }
+ $langcodes[] = $matches['lang'];
+
+ //Try and find a readable language file for the requested language.
+ $foundFile = false;
+ foreach ($langcodes as $code) {
+ $lang_file = $lang_path . 'phpmailer.lang-' . $code . '.php';
+ if (static::fileIsAccessible($lang_file)) {
+ $foundFile = true;
+ break;
+ }
+ }
+
+ if ($foundFile === false) {
+ $foundlang = false;
+ } else {
+ $lines = file($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 $foundlang; //Returns false if language not found
+ }
+
+ /**
+ * Get the array of strings for the current language.
+ *
+ * @return array
+ */
+ public function getTranslations()
+ {
+ if (empty($this->language)) {
+ $this->setLanguage(); // Set the default language.
+ }
+
+ 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 (!isset($addr[1]) || ($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 (
+ '' !== $this->MessageID &&
+ preg_match(
+ '/^<((([a-z\d!#$%&\'*+\/=?^_`{|}~-]+(\.[a-z\d!#$%&\'*+\/=?^_`{|}~-]+)*)' .
+ '|("(([\x01-\x08\x0B\x0C\x0E-\x1F\x7F]|[\x21\x23-\x5B\x5D-\x7E])' .
+ '|(\\[\x01-\x09\x0B\x0C\x0E-\x7F]))*"))@(([a-z\d!#$%&\'*+\/=?^_`{|}~-]+' .
+ '(\.[a-z\d!#$%&\'*+\/=?^_`{|}~-]+)*)|(\[(([\x01-\x08\x0B\x0C\x0E-\x1F\x7F]' .
+ '|[\x21-\x5A\x5E-\x7E])|(\\[\x01-\x09\x0B\x0C\x0E-\x7F]))*\])))>$/Di',
+ $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) {
+ //Empty string for default X-Mailer header
+ $result .= $this->headerLine(
+ 'X-Mailer',
+ 'PHPMailer ' . self::VERSION . ' (https://github.com/PHPMailer/PHPMailer)'
+ );
+ } elseif (is_string($this->XMailer) && trim($this->XMailer) !== '') {
+ //Some string
+ $result .= $this->headerLine('X-Mailer', trim($this->XMailer));
+ } //Other values result in no X-Mailer header
+
+ 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 $result;
+ }
+
+ /**
+ * Returns the whole MIME message.
+ * Includes complete headers and body.
+ * Only valid post preSend().
+ *
+ * @see PHPMailer::preSend()
+ *
+ * @return string
+ */
+ public function getSentMIMEMessage()
+ {
+ return static::stripTrailingWSP($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.
+ *
+ * @throws Exception
+ *
+ * @return string The assembled message body
+ */
+ public function createBody()
+ {
+ $body = '';
+ //Create unique IDs and preset boundaries
+ $this->setBoundaries();
+
+ if ($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
+ $mimepre = '';
+ switch ($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 $body;
+ }
+
+ /**
+ * Get the boundaries that this message will use
+ * @return array
+ */
+ public function getBoundaries()
+ {
+ if (empty($this->boundary)) {
+ $this->setBoundaries();
+ }
+ return $this->boundary;
+ }
+
+ /**
+ * 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
+ *
+ * @throws Exception
+ *
+ * @return bool
+ */
+ 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 $boundary
+ *
+ * @throws Exception
+ *
+ * @return string
+ */
+ protected function attachAll($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 $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
+ *
+ * @throws Exception
+ *
+ * @return string
+ */
+ public function encodeString($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
+ *
+ * @throws Exception
+ *
+ * @return bool True on successfully adding an attachment
+ */
+ 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 in `img` tags, for example `<img src="cid:mylogo">`.
+ * 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 filename
+ * @param string $encoding File encoding (see $Encoding) defaults to `base64`
+ * @param string $type File MIME type (by default mapped from the `$path` filename's extension)
+ * @param string $disposition Disposition to use: `inline` (default) or `attachment`
+ * (unlikely you want this – {@see `addAttachment()`} instead)
+ *
+ * @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
+ *
+ * @throws Exception
+ *
+ * @return bool True on successfully adding an attachment
+ */
+ 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 .= ' ' . $this->lang('smtp_detail') . $lasterror['detail'];
+ }
+ if (!empty($lasterror['smtp_code'])) {
+ $msg .= ' ' . $this->lang('smtp_code') . $lasterror['smtp_code'];
+ }
+ if (!empty($lasterror['smtp_code_ex'])) {
+ $msg .= ' ' . $this->lang('smtp_code_ex') . $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;
+ }
+ //Is it a syntactically valid hostname (when embeded in a URL)?
+ return filter_var('http://' . $host, FILTER_VALIDATE_URL) !== 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;
+ }
+
+ /**
+ * Build an error message starting with a generic one and adding details if possible.
+ *
+ * @param string $base_key
+ * @return string
+ */
+ private function getSmtpErrorMessage($base_key)
+ {
+ $message = $this->lang($base_key);
+ $error = $this->smtp->getError();
+ if (!empty($error['error'])) {
+ $message .= ' ' . $error['error'];
+ if (!empty($error['detail'])) {
+ $message .= ' ' . $error['detail'];
+ }
+ }
+
+ return $message;
+ }
+
+ /**
+ * 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 $value Header value
+ *
+ * @return bool True if a header was set successfully
+ * @throws Exception
+ */
+ public function addCustomHeader($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($this->lang('invalid_header'));
+ }
+
+ 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 $advanced Any boolean value to use the internal converter,
+ * or provide your own callable for custom conversion.
+ * *Never* pass user-supplied data into this parameter
+ *
+ * @return string
+ */
+ public function html2text($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',
+ 'csv' => 'text/csv',
+ '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 whitespace from a string.
+ *
+ * @param string $text
+ *
+ * @return string The text to remove whitespace from
+ */
+ public static function stripTrailingWSP($text)
+ {
+ return rtrim($text, " \r\n\t");
+ }
+
+ /**
+ * Strip trailing line breaks from a string.
+ *
+ * @param string $text
+ *
+ * @return string The text to remove breaks from
+ */
+ public static function stripTrailingBreaks($text)
+ {
+ return rtrim($text, "\r\n");
+ }
+
+ /**
+ * Return the current line break format string.
+ *
+ * @return string
+ */
+ public static function getLE()
+ {
+ return static::$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 $signHeader
+ *
+ * @throws Exception
+ *
+ * @return string The DKIM signature value
+ */
+ public function DKIM_Sign($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::stripTrailingBreaks($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 $body Body
+ *
+ * @throws Exception
+ *
+ * @return string
+ */
+ public function DKIM_Add($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 OAuthTokenProvider instance.
+ *
+ * @return OAuthTokenProvider
+ */
+ public function getOAuth()
+ {
+ return $this->oauth;
+ }
+
+ /**
+ * Set an OAuthTokenProvider instance.
+ */
+ public function setOAuth(OAuthTokenProvider $oauth)
+ {
+ $this->oauth = $oauth;
+ }
+}
diff --git a/wp-includes/PHPMailer/SMTP.php b/wp-includes/PHPMailer/SMTP.php
new file mode 100644
index 0000000..2b63840
--- /dev/null
+++ b/wp-includes/PHPMailer/SMTP.php
@@ -0,0 +1,1466 @@
+<?php
+
+/**
+ * PHPMailer RFC821 SMTP email 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 RFC821 SMTP email transport class.
+ * Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
+ *
+ * @author Chris Ryan
+ * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
+ */
+class SMTP
+{
+ /**
+ * The PHPMailer SMTP version number.
+ *
+ * @var string
+ */
+ const VERSION = '6.8.1';
+
+ /**
+ * SMTP line break constant.
+ *
+ * @var string
+ */
+ const LE = "\r\n";
+
+ /**
+ * The SMTP port to use if one is not specified.
+ *
+ * @var int
+ */
+ const DEFAULT_PORT = 25;
+
+ /**
+ * The SMTPs port to use if one is not specified.
+ *
+ * @var int
+ */
+ const DEFAULT_SECURE_PORT = 465;
+
+ /**
+ * The maximum line length allowed by RFC 5321 section 4.5.3.1.6,
+ * *excluding* a trailing CRLF break.
+ *
+ * @see https://tools.ietf.org/html/rfc5321#section-4.5.3.1.6
+ *
+ * @var int
+ */
+ const MAX_LINE_LENGTH = 998;
+
+ /**
+ * The maximum line length allowed for replies in RFC 5321 section 4.5.3.1.5,
+ * *including* a trailing CRLF line break.
+ *
+ * @see https://tools.ietf.org/html/rfc5321#section-4.5.3.1.5
+ *
+ * @var int
+ */
+ const MAX_REPLY_LENGTH = 512;
+
+ /**
+ * Debug level for no output.
+ *
+ * @var int
+ */
+ const DEBUG_OFF = 0;
+
+ /**
+ * Debug level to show client -> server messages.
+ *
+ * @var int
+ */
+ const DEBUG_CLIENT = 1;
+
+ /**
+ * Debug level to show client -> server and server -> client messages.
+ *
+ * @var int
+ */
+ const DEBUG_SERVER = 2;
+
+ /**
+ * Debug level to show connection status, client -> server and server -> client messages.
+ *
+ * @var int
+ */
+ const DEBUG_CONNECTION = 3;
+
+ /**
+ * Debug level to show all messages.
+ *
+ * @var int
+ */
+ const DEBUG_LOWLEVEL = 4;
+
+ /**
+ * Debug output level.
+ * Options:
+ * * self::DEBUG_OFF (`0`) No debug output, default
+ * * self::DEBUG_CLIENT (`1`) Client commands
+ * * self::DEBUG_SERVER (`2`) Client commands and server responses
+ * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
+ * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages.
+ *
+ * @var int
+ */
+ public $do_debug = self::DEBUG_OFF;
+
+ /**
+ * How to handle debug output.
+ * Options:
+ * * `echo` Output plain-text as-is, appropriate for CLI
+ * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
+ * * `error_log` Output to error log as configured in php.ini
+ * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
+ *
+ * ```php
+ * $smtp->Debugoutput = function($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;
+ * ```
+ *
+ * @var string|callable|\Psr\Log\LoggerInterface
+ */
+ public $Debugoutput = 'echo';
+
+ /**
+ * Whether to use VERP.
+ *
+ * @see http://en.wikipedia.org/wiki/Variable_envelope_return_path
+ * @see http://www.postfix.org/VERP_README.html Info on VERP
+ *
+ * @var bool
+ */
+ public $do_verp = false;
+
+ /**
+ * The timeout value for connection, in seconds.
+ * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
+ * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
+ *
+ * @see http://tools.ietf.org/html/rfc2821#section-4.5.3.2
+ *
+ * @var int
+ */
+ public $Timeout = 300;
+
+ /**
+ * How long to wait for commands to complete, in seconds.
+ * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
+ *
+ * @var int
+ */
+ public $Timelimit = 300;
+
+ /**
+ * Patterns to extract an SMTP transaction id from reply to a DATA command.
+ * The first capture group in each regex will be used as the ID.
+ * MS ESMTP returns the message ID, which may not be correct for internal tracking.
+ *
+ * @var string[]
+ */
+ protected $smtp_transaction_id_patterns = [
+ 'exim' => '/[\d]{3} OK id=(.*)/',
+ 'sendmail' => '/[\d]{3} 2.0.0 (.*) Message/',
+ 'postfix' => '/[\d]{3} 2.0.0 Ok: queued as (.*)/',
+ 'Microsoft_ESMTP' => '/[0-9]{3} 2.[\d].0 (.*)@(?:.*) Queued mail for delivery/',
+ 'Amazon_SES' => '/[\d]{3} Ok (.*)/',
+ 'SendGrid' => '/[\d]{3} Ok: queued as (.*)/',
+ 'CampaignMonitor' => '/[\d]{3} 2.0.0 OK:([a-zA-Z\d]{48})/',
+ 'Haraka' => '/[\d]{3} Message Queued \((.*)\)/',
+ 'ZoneMTA' => '/[\d]{3} Message queued as (.*)/',
+ 'Mailjet' => '/[\d]{3} OK queued as (.*)/',
+ ];
+
+ /**
+ * The last transaction ID issued in response to a DATA command,
+ * if one was detected.
+ *
+ * @var string|bool|null
+ */
+ protected $last_smtp_transaction_id;
+
+ /**
+ * The socket for the server connection.
+ *
+ * @var ?resource
+ */
+ protected $smtp_conn;
+
+ /**
+ * Error information, if any, for the last SMTP command.
+ *
+ * @var array
+ */
+ protected $error = [
+ 'error' => '',
+ 'detail' => '',
+ 'smtp_code' => '',
+ 'smtp_code_ex' => '',
+ ];
+
+ /**
+ * The reply the server sent to us for HELO.
+ * If null, no HELO string has yet been received.
+ *
+ * @var string|null
+ */
+ protected $helo_rply;
+
+ /**
+ * The set of SMTP extensions sent in reply to EHLO command.
+ * Indexes of the array are extension names.
+ * Value at index 'HELO' or 'EHLO' (according to command that was sent)
+ * represents the server name. In case of HELO it is the only element of the array.
+ * Other values can be boolean TRUE or an array containing extension options.
+ * If null, no HELO/EHLO string has yet been received.
+ *
+ * @var array|null
+ */
+ protected $server_caps;
+
+ /**
+ * The most recent reply received from the server.
+ *
+ * @var string
+ */
+ protected $last_reply = '';
+
+ /**
+ * Output debugging info via a user-selected method.
+ *
+ * @param string $str Debug string to output
+ * @param int $level The debug level of this message; see DEBUG_* constants
+ *
+ * @see SMTP::$Debugoutput
+ * @see SMTP::$do_debug
+ */
+ protected function edebug($str, $level = 0)
+ {
+ if ($level > $this->do_debug) {
+ return;
+ }
+ //Is this a PSR-3 logger?
+ if ($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, $level);
+
+ return;
+ }
+ switch ($this->Debugoutput) {
+ case 'error_log':
+ //Don't output, just log
+ error_log($str);
+ break;
+ case 'html':
+ //Cleans up output a bit for a better looking, HTML-safe output
+ echo gmdate('Y-m-d H:i:s'), ' ', 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";
+ }
+ }
+
+ /**
+ * Connect to an SMTP server.
+ *
+ * @param string $host SMTP server IP or host name
+ * @param int $port The port number to connect to
+ * @param int $timeout How long to wait for the connection to open
+ * @param array $options An array of options for stream_context_create()
+ *
+ * @return bool
+ */
+ public function connect($host, $port = null, $timeout = 30, $options = [])
+ {
+ //Clear errors to avoid confusion
+ $this->setError('');
+ //Make sure we are __not__ connected
+ if ($this->connected()) {
+ //Already connected, generate error
+ $this->setError('Already connected to a server');
+
+ return false;
+ }
+ if (empty($port)) {
+ $port = self::DEFAULT_PORT;
+ }
+ //Connect to the SMTP server
+ $this->edebug(
+ "Connection: opening to $host:$port, timeout=$timeout, options=" .
+ (count($options) > 0 ? var_export($options, true) : 'array()'),
+ self::DEBUG_CONNECTION
+ );
+
+ $this->smtp_conn = $this->getSMTPConnection($host, $port, $timeout, $options);
+
+ if ($this->smtp_conn === false) {
+ //Error info already set inside `getSMTPConnection()`
+ return false;
+ }
+
+ $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
+
+ //Get any announcement
+ $this->last_reply = $this->get_lines();
+ $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
+ $responseCode = (int)substr($this->last_reply, 0, 3);
+ if ($responseCode === 220) {
+ return true;
+ }
+ //Anything other than a 220 response means something went wrong
+ //RFC 5321 says the server will wait for us to send a QUIT in response to a 554 error
+ //https://tools.ietf.org/html/rfc5321#section-3.1
+ if ($responseCode === 554) {
+ $this->quit();
+ }
+ //This will handle 421 responses which may not wait for a QUIT (e.g. if the server is being shut down)
+ $this->edebug('Connection: closing due to error', self::DEBUG_CONNECTION);
+ $this->close();
+ return false;
+ }
+
+ /**
+ * Create connection to the SMTP server.
+ *
+ * @param string $host SMTP server IP or host name
+ * @param int $port The port number to connect to
+ * @param int $timeout How long to wait for the connection to open
+ * @param array $options An array of options for stream_context_create()
+ *
+ * @return false|resource
+ */
+ protected function getSMTPConnection($host, $port = null, $timeout = 30, $options = [])
+ {
+ static $streamok;
+ //This is enabled by default since 5.0.0 but some providers disable it
+ //Check this once and cache the result
+ if (null === $streamok) {
+ $streamok = function_exists('stream_socket_client');
+ }
+
+ $errno = 0;
+ $errstr = '';
+ if ($streamok) {
+ $socket_context = stream_context_create($options);
+ set_error_handler([$this, 'errorHandler']);
+ $connection = stream_socket_client(
+ $host . ':' . $port,
+ $errno,
+ $errstr,
+ $timeout,
+ STREAM_CLIENT_CONNECT,
+ $socket_context
+ );
+ } else {
+ //Fall back to fsockopen which should work in more places, but is missing some features
+ $this->edebug(
+ 'Connection: stream_socket_client not available, falling back to fsockopen',
+ self::DEBUG_CONNECTION
+ );
+ set_error_handler([$this, 'errorHandler']);
+ $connection = fsockopen(
+ $host,
+ $port,
+ $errno,
+ $errstr,
+ $timeout
+ );
+ }
+ restore_error_handler();
+
+ //Verify we connected properly
+ if (!is_resource($connection)) {
+ $this->setError(
+ 'Failed to connect to server',
+ '',
+ (string) $errno,
+ $errstr
+ );
+ $this->edebug(
+ 'SMTP ERROR: ' . $this->error['error']
+ . ": $errstr ($errno)",
+ self::DEBUG_CLIENT
+ );
+
+ return false;
+ }
+
+ //SMTP server can take longer to respond, give longer timeout for first read
+ //Windows does not have support for this timeout function
+ if (strpos(PHP_OS, 'WIN') !== 0) {
+ $max = (int)ini_get('max_execution_time');
+ //Don't bother if unlimited, or if set_time_limit is disabled
+ if (0 !== $max && $timeout > $max && strpos(ini_get('disable_functions'), 'set_time_limit') === false) {
+ @set_time_limit($timeout);
+ }
+ stream_set_timeout($connection, $timeout, 0);
+ }
+
+ return $connection;
+ }
+
+ /**
+ * Initiate a TLS (encrypted) session.
+ *
+ * @return bool
+ */
+ public function startTLS()
+ {
+ if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
+ return false;
+ }
+
+ //Allow the best TLS version(s) we can
+ $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
+
+ //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
+ //so add them back in manually if we can
+ if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
+ $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
+ $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
+ }
+
+ //Begin encrypted connection
+ set_error_handler([$this, 'errorHandler']);
+ $crypto_ok = stream_socket_enable_crypto(
+ $this->smtp_conn,
+ true,
+ $crypto_method
+ );
+ restore_error_handler();
+
+ return (bool) $crypto_ok;
+ }
+
+ /**
+ * Perform SMTP authentication.
+ * Must be run after hello().
+ *
+ * @see hello()
+ *
+ * @param string $username The user name
+ * @param string $password The password
+ * @param string $authtype The auth type (CRAM-MD5, PLAIN, LOGIN, XOAUTH2)
+ * @param OAuthTokenProvider $OAuth An optional OAuthTokenProvider instance for XOAUTH2 authentication
+ *
+ * @return bool True if successfully authenticated
+ */
+ public function authenticate(
+ $username,
+ $password,
+ $authtype = null,
+ $OAuth = null
+ ) {
+ if (!$this->server_caps) {
+ $this->setError('Authentication is not allowed before HELO/EHLO');
+
+ return false;
+ }
+
+ if (array_key_exists('EHLO', $this->server_caps)) {
+ //SMTP extensions are available; try to find a proper authentication method
+ if (!array_key_exists('AUTH', $this->server_caps)) {
+ $this->setError('Authentication is not allowed at this stage');
+ //'at this stage' means that auth may be allowed after the stage changes
+ //e.g. after STARTTLS
+
+ return false;
+ }
+
+ $this->edebug('Auth method requested: ' . ($authtype ?: 'UNSPECIFIED'), self::DEBUG_LOWLEVEL);
+ $this->edebug(
+ 'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
+ self::DEBUG_LOWLEVEL
+ );
+
+ //If we have requested a specific auth type, check the server supports it before trying others
+ if (null !== $authtype && !in_array($authtype, $this->server_caps['AUTH'], true)) {
+ $this->edebug('Requested auth method not available: ' . $authtype, self::DEBUG_LOWLEVEL);
+ $authtype = null;
+ }
+
+ if (empty($authtype)) {
+ //If no auth mechanism is specified, attempt to use these, in this order
+ //Try CRAM-MD5 first as it's more secure than the others
+ foreach (['CRAM-MD5', 'LOGIN', 'PLAIN', 'XOAUTH2'] as $method) {
+ if (in_array($method, $this->server_caps['AUTH'], true)) {
+ $authtype = $method;
+ break;
+ }
+ }
+ if (empty($authtype)) {
+ $this->setError('No supported authentication methods found');
+
+ return false;
+ }
+ $this->edebug('Auth method selected: ' . $authtype, self::DEBUG_LOWLEVEL);
+ }
+
+ if (!in_array($authtype, $this->server_caps['AUTH'], true)) {
+ $this->setError("The requested authentication method \"$authtype\" is not supported by the server");
+
+ return false;
+ }
+ } elseif (empty($authtype)) {
+ $authtype = 'LOGIN';
+ }
+ switch ($authtype) {
+ case 'PLAIN':
+ //Start authentication
+ if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
+ return false;
+ }
+ //Send encoded username and password
+ if (
+ //Format from https://tools.ietf.org/html/rfc4616#section-2
+ //We skip the first field (it's forgery), so the string starts with a null byte
+ !$this->sendCommand(
+ 'User & Password',
+ base64_encode("\0" . $username . "\0" . $password),
+ 235
+ )
+ ) {
+ return false;
+ }
+ break;
+ case 'LOGIN':
+ //Start authentication
+ if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
+ return false;
+ }
+ if (!$this->sendCommand('Username', base64_encode($username), 334)) {
+ return false;
+ }
+ if (!$this->sendCommand('Password', base64_encode($password), 235)) {
+ return false;
+ }
+ break;
+ case 'CRAM-MD5':
+ //Start authentication
+ if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
+ return false;
+ }
+ //Get the challenge
+ $challenge = base64_decode(substr($this->last_reply, 4));
+
+ //Build the response
+ $response = $username . ' ' . $this->hmac($challenge, $password);
+
+ //send encoded credentials
+ return $this->sendCommand('Username', base64_encode($response), 235);
+ case 'XOAUTH2':
+ //The OAuth instance must be set up prior to requesting auth.
+ if (null === $OAuth) {
+ return false;
+ }
+ $oauth = $OAuth->getOauth64();
+
+ //Start authentication
+ if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
+ return false;
+ }
+ break;
+ default:
+ $this->setError("Authentication method \"$authtype\" is not supported");
+
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * Calculate an MD5 HMAC hash.
+ * Works like hash_hmac('md5', $data, $key)
+ * in case that function is not available.
+ *
+ * @param string $data The data to hash
+ * @param string $key The key to hash with
+ *
+ * @return string
+ */
+ protected function hmac($data, $key)
+ {
+ if (function_exists('hash_hmac')) {
+ return hash_hmac('md5', $data, $key);
+ }
+
+ //The following borrowed from
+ //http://php.net/manual/en/function.mhash.php#27225
+
+ //RFC 2104 HMAC implementation for php.
+ //Creates an md5 HMAC.
+ //Eliminates the need to install mhash to compute a HMAC
+ //by Lance Rushing
+
+ $bytelen = 64; //byte length for md5
+ if (strlen($key) > $bytelen) {
+ $key = pack('H*', md5($key));
+ }
+ $key = str_pad($key, $bytelen, chr(0x00));
+ $ipad = str_pad('', $bytelen, chr(0x36));
+ $opad = str_pad('', $bytelen, chr(0x5c));
+ $k_ipad = $key ^ $ipad;
+ $k_opad = $key ^ $opad;
+
+ return md5($k_opad . pack('H*', md5($k_ipad . $data)));
+ }
+
+ /**
+ * Check connection state.
+ *
+ * @return bool True if connected
+ */
+ public function connected()
+ {
+ if (is_resource($this->smtp_conn)) {
+ $sock_status = stream_get_meta_data($this->smtp_conn);
+ if ($sock_status['eof']) {
+ //The socket is valid but we are not connected
+ $this->edebug(
+ 'SMTP NOTICE: EOF caught while checking if connected',
+ self::DEBUG_CLIENT
+ );
+ $this->close();
+
+ return false;
+ }
+
+ return true; //everything looks good
+ }
+
+ return false;
+ }
+
+ /**
+ * Close the socket and clean up the state of the class.
+ * Don't use this function without first trying to use QUIT.
+ *
+ * @see quit()
+ */
+ public function close()
+ {
+ $this->server_caps = null;
+ $this->helo_rply = null;
+ if (is_resource($this->smtp_conn)) {
+ //Close the connection and cleanup
+ fclose($this->smtp_conn);
+ $this->smtp_conn = null; //Makes for cleaner serialization
+ $this->edebug('Connection: closed', self::DEBUG_CONNECTION);
+ }
+ }
+
+ /**
+ * Send an SMTP DATA command.
+ * Issues a data command and sends the msg_data to the server,
+ * finalizing the mail transaction. $msg_data is the message
+ * that is to be sent with the headers. Each header needs to be
+ * on a single line followed by a <CRLF> with the message headers
+ * and the message body being separated by an additional <CRLF>.
+ * Implements RFC 821: DATA <CRLF>.
+ *
+ * @param string $msg_data Message data to send
+ *
+ * @return bool
+ */
+ public function data($msg_data)
+ {
+ //This will use the standard timelimit
+ if (!$this->sendCommand('DATA', 'DATA', 354)) {
+ return false;
+ }
+
+ /* The server is ready to accept data!
+ * According to rfc821 we should not send more than 1000 characters on a single line (including the LE)
+ * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
+ * smaller lines to fit within the limit.
+ * We will also look for lines that start with a '.' and prepend an additional '.'.
+ * NOTE: this does not count towards line-length limit.
+ */
+
+ //Normalize line breaks before exploding
+ $lines = explode("\n", str_replace(["\r\n", "\r"], "\n", $msg_data));
+
+ /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
+ * of the first line (':' separated) does not contain a space then it _should_ be a header, and we will
+ * process all lines before a blank line as headers.
+ */
+
+ $field = substr($lines[0], 0, strpos($lines[0], ':'));
+ $in_headers = false;
+ if (!empty($field) && strpos($field, ' ') === false) {
+ $in_headers = true;
+ }
+
+ foreach ($lines as $line) {
+ $lines_out = [];
+ if ($in_headers && $line === '') {
+ $in_headers = false;
+ }
+ //Break this line up into several smaller lines if it's too long
+ //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
+ while (isset($line[self::MAX_LINE_LENGTH])) {
+ //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
+ //so as to avoid breaking in the middle of a word
+ $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
+ //Deliberately matches both false and 0
+ if (!$pos) {
+ //No nice break found, add a hard break
+ $pos = self::MAX_LINE_LENGTH - 1;
+ $lines_out[] = substr($line, 0, $pos);
+ $line = substr($line, $pos);
+ } else {
+ //Break at the found point
+ $lines_out[] = substr($line, 0, $pos);
+ //Move along by the amount we dealt with
+ $line = substr($line, $pos + 1);
+ }
+ //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
+ if ($in_headers) {
+ $line = "\t" . $line;
+ }
+ }
+ $lines_out[] = $line;
+
+ //Send the lines to the server
+ foreach ($lines_out as $line_out) {
+ //Dot-stuffing as per RFC5321 section 4.5.2
+ //https://tools.ietf.org/html/rfc5321#section-4.5.2
+ if (!empty($line_out) && $line_out[0] === '.') {
+ $line_out = '.' . $line_out;
+ }
+ $this->client_send($line_out . static::LE, 'DATA');
+ }
+ }
+
+ //Message data has been sent, complete the command
+ //Increase timelimit for end of DATA command
+ $savetimelimit = $this->Timelimit;
+ $this->Timelimit *= 2;
+ $result = $this->sendCommand('DATA END', '.', 250);
+ $this->recordLastTransactionID();
+ //Restore timelimit
+ $this->Timelimit = $savetimelimit;
+
+ return $result;
+ }
+
+ /**
+ * Send an SMTP HELO or EHLO command.
+ * Used to identify the sending server to the receiving server.
+ * This makes sure that client and server are in a known state.
+ * Implements RFC 821: HELO <SP> <domain> <CRLF>
+ * and RFC 2821 EHLO.
+ *
+ * @param string $host The host name or IP to connect to
+ *
+ * @return bool
+ */
+ public function hello($host = '')
+ {
+ //Try extended hello first (RFC 2821)
+ if ($this->sendHello('EHLO', $host)) {
+ return true;
+ }
+
+ //Some servers shut down the SMTP service here (RFC 5321)
+ if (substr($this->helo_rply, 0, 3) == '421') {
+ return false;
+ }
+
+ return $this->sendHello('HELO', $host);
+ }
+
+ /**
+ * Send an SMTP HELO or EHLO command.
+ * Low-level implementation used by hello().
+ *
+ * @param string $hello The HELO string
+ * @param string $host The hostname to say we are
+ *
+ * @return bool
+ *
+ * @see hello()
+ */
+ protected function sendHello($hello, $host)
+ {
+ $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
+ $this->helo_rply = $this->last_reply;
+ if ($noerror) {
+ $this->parseHelloFields($hello);
+ } else {
+ $this->server_caps = null;
+ }
+
+ return $noerror;
+ }
+
+ /**
+ * Parse a reply to HELO/EHLO command to discover server extensions.
+ * In case of HELO, the only parameter that can be discovered is a server name.
+ *
+ * @param string $type `HELO` or `EHLO`
+ */
+ protected function parseHelloFields($type)
+ {
+ $this->server_caps = [];
+ $lines = explode("\n", $this->helo_rply);
+
+ foreach ($lines as $n => $s) {
+ //First 4 chars contain response code followed by - or space
+ $s = trim(substr($s, 4));
+ if (empty($s)) {
+ continue;
+ }
+ $fields = explode(' ', $s);
+ if (!empty($fields)) {
+ if (!$n) {
+ $name = $type;
+ $fields = $fields[0];
+ } else {
+ $name = array_shift($fields);
+ switch ($name) {
+ case 'SIZE':
+ $fields = ($fields ? $fields[0] : 0);
+ break;
+ case 'AUTH':
+ if (!is_array($fields)) {
+ $fields = [];
+ }
+ break;
+ default:
+ $fields = true;
+ }
+ }
+ $this->server_caps[$name] = $fields;
+ }
+ }
+ }
+
+ /**
+ * Send an SMTP MAIL command.
+ * Starts a mail transaction from the email address specified in
+ * $from. Returns true if successful or false otherwise. If True
+ * the mail transaction is started and then one or more recipient
+ * commands may be called followed by a data command.
+ * Implements RFC 821: MAIL <SP> FROM:<reverse-path> <CRLF>.
+ *
+ * @param string $from Source address of this message
+ *
+ * @return bool
+ */
+ public function mail($from)
+ {
+ $useVerp = ($this->do_verp ? ' XVERP' : '');
+
+ return $this->sendCommand(
+ 'MAIL FROM',
+ 'MAIL FROM:<' . $from . '>' . $useVerp,
+ 250
+ );
+ }
+
+ /**
+ * Send an SMTP QUIT command.
+ * Closes the socket if there is no error or the $close_on_error argument is true.
+ * Implements from RFC 821: QUIT <CRLF>.
+ *
+ * @param bool $close_on_error Should the connection close if an error occurs?
+ *
+ * @return bool
+ */
+ public function quit($close_on_error = true)
+ {
+ $noerror = $this->sendCommand('QUIT', 'QUIT', 221);
+ $err = $this->error; //Save any error
+ if ($noerror || $close_on_error) {
+ $this->close();
+ $this->error = $err; //Restore any error from the quit command
+ }
+
+ return $noerror;
+ }
+
+ /**
+ * Send an SMTP RCPT command.
+ * Sets the TO argument to $toaddr.
+ * Returns true if the recipient was accepted false if it was rejected.
+ * Implements from RFC 821: RCPT <SP> TO:<forward-path> <CRLF>.
+ *
+ * @param string $address The address the message is being sent to
+ * @param string $dsn Comma separated list of DSN notifications. NEVER, SUCCESS, FAILURE
+ * or DELAY. If you specify NEVER all other notifications are ignored.
+ *
+ * @return bool
+ */
+ public function recipient($address, $dsn = '')
+ {
+ if (empty($dsn)) {
+ $rcpt = 'RCPT TO:<' . $address . '>';
+ } else {
+ $dsn = strtoupper($dsn);
+ $notify = [];
+
+ if (strpos($dsn, 'NEVER') !== false) {
+ $notify[] = 'NEVER';
+ } else {
+ foreach (['SUCCESS', 'FAILURE', 'DELAY'] as $value) {
+ if (strpos($dsn, $value) !== false) {
+ $notify[] = $value;
+ }
+ }
+ }
+
+ $rcpt = 'RCPT TO:<' . $address . '> NOTIFY=' . implode(',', $notify);
+ }
+
+ return $this->sendCommand(
+ 'RCPT TO',
+ $rcpt,
+ [250, 251]
+ );
+ }
+
+ /**
+ * Send an SMTP RSET command.
+ * Abort any transaction that is currently in progress.
+ * Implements RFC 821: RSET <CRLF>.
+ *
+ * @return bool True on success
+ */
+ public function reset()
+ {
+ return $this->sendCommand('RSET', 'RSET', 250);
+ }
+
+ /**
+ * Send a command to an SMTP server and check its return code.
+ *
+ * @param string $command The command name - not sent to the server
+ * @param string $commandstring The actual command to send
+ * @param int|array $expect One or more expected integer success codes
+ *
+ * @return bool True on success
+ */
+ protected function sendCommand($command, $commandstring, $expect)
+ {
+ if (!$this->connected()) {
+ $this->setError("Called $command without being connected");
+
+ return false;
+ }
+ //Reject line breaks in all commands
+ if ((strpos($commandstring, "\n") !== false) || (strpos($commandstring, "\r") !== false)) {
+ $this->setError("Command '$command' contained line breaks");
+
+ return false;
+ }
+ $this->client_send($commandstring . static::LE, $command);
+
+ $this->last_reply = $this->get_lines();
+ //Fetch SMTP code and possible error code explanation
+ $matches = [];
+ if (preg_match('/^([\d]{3})[ -](?:([\d]\\.[\d]\\.[\d]{1,2}) )?/', $this->last_reply, $matches)) {
+ $code = (int) $matches[1];
+ $code_ex = (count($matches) > 2 ? $matches[2] : null);
+ //Cut off error code from each response line
+ $detail = preg_replace(
+ "/{$code}[ -]" .
+ ($code_ex ? str_replace('.', '\\.', $code_ex) . ' ' : '') . '/m',
+ '',
+ $this->last_reply
+ );
+ } else {
+ //Fall back to simple parsing if regex fails
+ $code = (int) substr($this->last_reply, 0, 3);
+ $code_ex = null;
+ $detail = substr($this->last_reply, 4);
+ }
+
+ $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
+
+ if (!in_array($code, (array) $expect, true)) {
+ $this->setError(
+ "$command command failed",
+ $detail,
+ $code,
+ $code_ex
+ );
+ $this->edebug(
+ 'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
+ self::DEBUG_CLIENT
+ );
+
+ return false;
+ }
+
+ //Don't clear the error store when using keepalive
+ if ($command !== 'RSET') {
+ $this->setError('');
+ }
+
+ return true;
+ }
+
+ /**
+ * Send an SMTP SAML command.
+ * Starts a mail transaction from the email address specified in $from.
+ * Returns true if successful or false otherwise. If True
+ * the mail transaction is started and then one or more recipient
+ * commands may be called followed by a data command. This command
+ * will send the message to the users terminal if they are logged
+ * in and send them an email.
+ * Implements RFC 821: SAML <SP> FROM:<reverse-path> <CRLF>.
+ *
+ * @param string $from The address the message is from
+ *
+ * @return bool
+ */
+ public function sendAndMail($from)
+ {
+ return $this->sendCommand('SAML', "SAML FROM:$from", 250);
+ }
+
+ /**
+ * Send an SMTP VRFY command.
+ *
+ * @param string $name The name to verify
+ *
+ * @return bool
+ */
+ public function verify($name)
+ {
+ return $this->sendCommand('VRFY', "VRFY $name", [250, 251]);
+ }
+
+ /**
+ * Send an SMTP NOOP command.
+ * Used to keep keep-alives alive, doesn't actually do anything.
+ *
+ * @return bool
+ */
+ public function noop()
+ {
+ return $this->sendCommand('NOOP', 'NOOP', 250);
+ }
+
+ /**
+ * Send an SMTP TURN command.
+ * This is an optional command for SMTP that this class does not support.
+ * This method is here to make the RFC821 Definition complete for this class
+ * and _may_ be implemented in future.
+ * Implements from RFC 821: TURN <CRLF>.
+ *
+ * @return bool
+ */
+ public function turn()
+ {
+ $this->setError('The SMTP TURN command is not implemented');
+ $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
+
+ return false;
+ }
+
+ /**
+ * Send raw data to the server.
+ *
+ * @param string $data The data to send
+ * @param string $command Optionally, the command this is part of, used only for controlling debug output
+ *
+ * @return int|bool The number of bytes sent to the server or false on error
+ */
+ public function client_send($data, $command = '')
+ {
+ //If SMTP transcripts are left enabled, or debug output is posted online
+ //it can leak credentials, so hide credentials in all but lowest level
+ if (
+ self::DEBUG_LOWLEVEL > $this->do_debug &&
+ in_array($command, ['User & Password', 'Username', 'Password'], true)
+ ) {
+ $this->edebug('CLIENT -> SERVER: [credentials hidden]', self::DEBUG_CLIENT);
+ } else {
+ $this->edebug('CLIENT -> SERVER: ' . $data, self::DEBUG_CLIENT);
+ }
+ set_error_handler([$this, 'errorHandler']);
+ $result = fwrite($this->smtp_conn, $data);
+ restore_error_handler();
+
+ return $result;
+ }
+
+ /**
+ * Get the latest error.
+ *
+ * @return array
+ */
+ public function getError()
+ {
+ return $this->error;
+ }
+
+ /**
+ * Get SMTP extensions available on the server.
+ *
+ * @return array|null
+ */
+ public function getServerExtList()
+ {
+ return $this->server_caps;
+ }
+
+ /**
+ * Get metadata about the SMTP server from its HELO/EHLO response.
+ * The method works in three ways, dependent on argument value and current state:
+ * 1. HELO/EHLO has not been sent - returns null and populates $this->error.
+ * 2. HELO has been sent -
+ * $name == 'HELO': returns server name
+ * $name == 'EHLO': returns boolean false
+ * $name == any other string: returns null and populates $this->error
+ * 3. EHLO has been sent -
+ * $name == 'HELO'|'EHLO': returns the server name
+ * $name == any other string: if extension $name exists, returns True
+ * or its options (e.g. AUTH mechanisms supported). Otherwise returns False.
+ *
+ * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
+ *
+ * @return string|bool|null
+ */
+ public function getServerExt($name)
+ {
+ if (!$this->server_caps) {
+ $this->setError('No HELO/EHLO was sent');
+
+ return null;
+ }
+
+ if (!array_key_exists($name, $this->server_caps)) {
+ if ('HELO' === $name) {
+ return $this->server_caps['EHLO'];
+ }
+ if ('EHLO' === $name || array_key_exists('EHLO', $this->server_caps)) {
+ return false;
+ }
+ $this->setError('HELO handshake was used; No information about server extensions available');
+
+ return null;
+ }
+
+ return $this->server_caps[$name];
+ }
+
+ /**
+ * Get the last reply from the server.
+ *
+ * @return string
+ */
+ public function getLastReply()
+ {
+ return $this->last_reply;
+ }
+
+ /**
+ * Read the SMTP server's response.
+ * Either before eof or socket timeout occurs on the operation.
+ * With SMTP we can tell if we have more lines to read if the
+ * 4th character is '-' symbol. If it is a space then we don't
+ * need to read anything else.
+ *
+ * @return string
+ */
+ protected function get_lines()
+ {
+ //If the connection is bad, give up straight away
+ if (!is_resource($this->smtp_conn)) {
+ return '';
+ }
+ $data = '';
+ $endtime = 0;
+ stream_set_timeout($this->smtp_conn, $this->Timeout);
+ if ($this->Timelimit > 0) {
+ $endtime = time() + $this->Timelimit;
+ }
+ $selR = [$this->smtp_conn];
+ $selW = null;
+ while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
+ //Must pass vars in here as params are by reference
+ //solution for signals inspired by https://github.com/symfony/symfony/pull/6540
+ set_error_handler([$this, 'errorHandler']);
+ $n = stream_select($selR, $selW, $selW, $this->Timelimit);
+ restore_error_handler();
+
+ if ($n === false) {
+ $message = $this->getError()['detail'];
+
+ $this->edebug(
+ 'SMTP -> get_lines(): select failed (' . $message . ')',
+ self::DEBUG_LOWLEVEL
+ );
+
+ //stream_select returns false when the `select` system call is interrupted
+ //by an incoming signal, try the select again
+ if (stripos($message, 'interrupted system call') !== false) {
+ $this->edebug(
+ 'SMTP -> get_lines(): retrying stream_select',
+ self::DEBUG_LOWLEVEL
+ );
+ $this->setError('');
+ continue;
+ }
+
+ break;
+ }
+
+ if (!$n) {
+ $this->edebug(
+ 'SMTP -> get_lines(): select timed-out in (' . $this->Timelimit . ' sec)',
+ self::DEBUG_LOWLEVEL
+ );
+ break;
+ }
+
+ //Deliberate noise suppression - errors are handled afterwards
+ $str = @fgets($this->smtp_conn, self::MAX_REPLY_LENGTH);
+ $this->edebug('SMTP INBOUND: "' . trim($str) . '"', self::DEBUG_LOWLEVEL);
+ $data .= $str;
+ //If response is only 3 chars (not valid, but RFC5321 S4.2 says it must be handled),
+ //or 4th character is a space or a line break char, we are done reading, break the loop.
+ //String array access is a significant micro-optimisation over strlen
+ if (!isset($str[3]) || $str[3] === ' ' || $str[3] === "\r" || $str[3] === "\n") {
+ break;
+ }
+ //Timed-out? Log and break
+ $info = stream_get_meta_data($this->smtp_conn);
+ if ($info['timed_out']) {
+ $this->edebug(
+ 'SMTP -> get_lines(): stream timed-out (' . $this->Timeout . ' sec)',
+ self::DEBUG_LOWLEVEL
+ );
+ break;
+ }
+ //Now check if reads took too long
+ if ($endtime && time() > $endtime) {
+ $this->edebug(
+ 'SMTP -> get_lines(): timelimit reached (' .
+ $this->Timelimit . ' sec)',
+ self::DEBUG_LOWLEVEL
+ );
+ break;
+ }
+ }
+
+ return $data;
+ }
+
+ /**
+ * Enable or disable VERP address generation.
+ *
+ * @param bool $enabled
+ */
+ public function setVerp($enabled = false)
+ {
+ $this->do_verp = $enabled;
+ }
+
+ /**
+ * Get VERP address generation mode.
+ *
+ * @return bool
+ */
+ public function getVerp()
+ {
+ return $this->do_verp;
+ }
+
+ /**
+ * Set error messages and codes.
+ *
+ * @param string $message The error message
+ * @param string $detail Further detail on the error
+ * @param string $smtp_code An associated SMTP error code
+ * @param string $smtp_code_ex Extended SMTP code
+ */
+ protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
+ {
+ $this->error = [
+ 'error' => $message,
+ 'detail' => $detail,
+ 'smtp_code' => $smtp_code,
+ 'smtp_code_ex' => $smtp_code_ex,
+ ];
+ }
+
+ /**
+ * Set debug output method.
+ *
+ * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it
+ */
+ public function setDebugOutput($method = 'echo')
+ {
+ $this->Debugoutput = $method;
+ }
+
+ /**
+ * Get debug output method.
+ *
+ * @return string
+ */
+ public function getDebugOutput()
+ {
+ return $this->Debugoutput;
+ }
+
+ /**
+ * Set debug output level.
+ *
+ * @param int $level
+ */
+ public function setDebugLevel($level = 0)
+ {
+ $this->do_debug = $level;
+ }
+
+ /**
+ * Get debug output level.
+ *
+ * @return int
+ */
+ public function getDebugLevel()
+ {
+ return $this->do_debug;
+ }
+
+ /**
+ * Set SMTP timeout.
+ *
+ * @param int $timeout The timeout duration in seconds
+ */
+ public function setTimeout($timeout = 0)
+ {
+ $this->Timeout = $timeout;
+ }
+
+ /**
+ * Get SMTP timeout.
+ *
+ * @return int
+ */
+ public function getTimeout()
+ {
+ return $this->Timeout;
+ }
+
+ /**
+ * Reports an error number and string.
+ *
+ * @param int $errno The error number returned by PHP
+ * @param string $errmsg The error message returned by PHP
+ * @param string $errfile The file the error occurred in
+ * @param int $errline The line number the error occurred on
+ */
+ protected function errorHandler($errno, $errmsg, $errfile = '', $errline = 0)
+ {
+ $notice = 'Connection failed.';
+ $this->setError(
+ $notice,
+ $errmsg,
+ (string) $errno
+ );
+ $this->edebug(
+ "$notice Error #$errno: $errmsg [$errfile line $errline]",
+ self::DEBUG_CONNECTION
+ );
+ }
+
+ /**
+ * Extract and return the ID of the last SMTP transaction based on
+ * a list of patterns provided in SMTP::$smtp_transaction_id_patterns.
+ * Relies on the host providing the ID in response to a DATA command.
+ * If no reply has been received yet, it will return null.
+ * If no pattern was matched, it will return false.
+ *
+ * @return bool|string|null
+ */
+ protected function recordLastTransactionID()
+ {
+ $reply = $this->getLastReply();
+
+ if (empty($reply)) {
+ $this->last_smtp_transaction_id = null;
+ } else {
+ $this->last_smtp_transaction_id = false;
+ foreach ($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
+ $matches = [];
+ if (preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
+ $this->last_smtp_transaction_id = trim($matches[1]);
+ break;
+ }
+ }
+ }
+
+ return $this->last_smtp_transaction_id;
+ }
+
+ /**
+ * Get the queue/transaction ID of the last SMTP transaction
+ * If no reply has been received yet, it will return null.
+ * If no pattern was matched, it will return false.
+ *
+ * @return bool|string|null
+ *
+ * @see recordLastTransactionID()
+ */
+ public function getLastTransactionID()
+ {
+ return $this->last_smtp_transaction_id;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 01:18:10 +0000