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📁 ..	-	2025-09-05 13:25
📄 Exception.php <?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 https://www.gnu.org/licenses/old-licenses/lgpl-2.1.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"; } }	1.23 KB	2025-09-05 13:25
📄 PHPMailer.php <?php /** * PHPMailer - PHP email creation and transport class. * PHP Version 5.5. * * @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project * * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk> * @author Jim Jagielski (jimjag) <jimjag@gmail.com> * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net> * @author Brent R. Matzelle (original founder) * @copyright 2012 - 2020 Marcus Bointon * @copyright 2010 - 2012 Jim Jagielski * @copyright 2004 - 2009 Andy Prevost * @license https://www.gnu.org/licenses/old-licenses/lgpl-2.1.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 https://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://www.rfc-editor.org/rfc/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 = ''; /* * SMTP SMTPXClient command attributes * * @var array / protected $SMTPXClient = []; /* * 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://www.rfc-editor.org/rfc/rfc3461.html#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 https://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: https://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 $uniqueid = ''; /* * The PHPMailer Version number. * * @var string / const VERSION = '6.9.3'; /* * Error severity: message only, continue processing. * * @var int / const STOP_MESSAGE = 0; /* * Error severity: message, likely ok to continue processing. * * @var int / const STOP_CONTINUE = 1; /* * Error severity: message, plus full stop, critical error reached. * * @var int / const STOP_CRITICAL = 2; /* * The SMTP standard CRLF line break. * If you want to change line break format, change static::$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) { $this->Debugoutput->debug(rtrim($str, "\r\n")); 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 'Reply-To' * @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 https://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! * * @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 $address_kind) { if ($this->{$address_kind} === null) { $this->{$address_kind} = ''; continue; } $this->{$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: https://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html //Sendmail docs: https://www.sendmail.org/~ca/email/man/sendmail.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://www.rfc-editor.org/rfc/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 https://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: https://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html //Sendmail docs: https://www.sendmail.org/~ca/email/man/sendmail.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; } /* * Provide SMTP XCLIENT attributes * * @param string $name Attribute name * @param ?string $value Attribute value * * @return bool / public function setSMTPXclientAttribute($name, $value) { if (!in_array($name, SMTP::$xclient_allowed_attributes)) { return false; } if (isset($this->SMTPXClient[$name]) && $value === null) { unset($this->SMTPXClient[$name]); } elseif ($value !== null) { $this->SMTPXClient[$name] = $value; } return true; } /* * Get SMTP XCLIENT attributes * * @return array / public function getSMTPXclientAttributes() { return $this->SMTPXClient; } /* * 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 = $this->Sender; } if (count($this->SMTPXClient)) { $this->smtp->xclient($this->SMTPXClient); } 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 are not connecting to localhost //* we have openssl extension //* we are not already using SSL //* the server offers STARTTLS if ( $this->SMTPAutoTLS && $this->Host !== 'localhost' && $sslext && $secure !== 'ssl' && $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://www.rfc-editor.org/rfc/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 https://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 https://www.rfc-editor.org/rfc/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 = []; } /* * Clear a specific custom header by name or name and value. * $name value can be overloaded to contain * both header name and value (name:value). * * @param string $name Custom header name * @param string\|null $value Header value * * @return bool True if a header was replaced successfully / public function clearCustomHeader($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 === $value) ? null : trim($value); foreach ($this->CustomHeader as $k => $pair) { if ($pair[0] == $name) { // We remove the header if the value is not provided or it matches. if (null === $value \|\| $pair[1] == $value) { unset($this->CustomHeader[$k]); } } } return true; } /* * Replace 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 $value Header value * * @return bool True if a header was replaced successfully * @throws Exception / public function replaceCustomHeader($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); $replaced = false; foreach ($this->CustomHeader as $k => $pair) { if ($pair[0] == $name) { if ($replaced) { unset($this->CustomHeader[$k]); continue; } if (strpbrk($name . $value, "\r\n") !== false) { if ($this->exceptions) { throw new Exception($this->lang('invalid_header')); } return false; } $this->CustomHeader[$k] = [$name, $value]; $replaced = true; } } return true; } /* * 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') !== '') { $result = php_uname('n'); } if (!static::isValidHost($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-z\d.-]\|\[[a-f\d:]+\])$/i', $host) ) { return false; } //Looks like a bracketed IPv6 address if (strlen($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 embedded in a URL)? return filter_var('https://' . $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 https://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://www.rfc-editor.org/rfc/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://www.rfc-editor.org/rfc/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://www.rfc-editor.org/rfc/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://www.rfc-editor.org/rfc/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://www.rfc-editor.org/rfc/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; } }	178.93 KB	2025-09-05 13:25
📄 SMTP.php <?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 https://www.gnu.org/licenses/old-licenses/lgpl-2.1.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 = '6.9.3'; /* * 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://www.rfc-editor.org/rfc/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://www.rfc-editor.org/rfc/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 https://en.wikipedia.org/wiki/Variable_envelope_return_path * @see https://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 https://www.rfc-editor.org/rfc/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 (.)/', ]; /* * Allowed SMTP XCLIENT attributes. * Must be allowed by the SMTP server. EHLO response is not checked. * * @see https://www.postfix.org/XCLIENT_README.html * * @var array / public static $xclient_allowed_attributes = [ 'NAME', 'ADDR', 'PORT', 'PROTO', 'HELO', 'LOGIN', 'DESTADDR', 'DESTPORT' ]; /* * 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) { //Remove trailing line breaks potentially added by calls to SMTP::client_send() $this->Debugoutput->debug(rtrim($str, "\r\n")); 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 /* @noinspection ForgottenDebugOutputInspection / 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 ($responseCode === 220) { return true; } //Anything other than a 220 response means something went wrong //RFC 5321 says the server will wait for us to send a QUIT in response to a 554 error //https://www.rfc-editor.org/rfc/rfc5321#section-3.1 if ($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(function () { call_user_func_array([$this, 'errorHandler'], func_get_args()); }); $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 $this->edebug( 'Connection: stream_socket_client not available, falling back to fsockopen', self::DEBUG_CONNECTION ); set_error_handler(function () { call_user_func_array([$this, 'errorHandler'], func_get_args()); }); $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; $crypto_method \|= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT; } //Begin encrypted connection set_error_handler(function () { call_user_func_array([$this, 'errorHandler'], func_get_args()); }); $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 (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) { return false; } //Send encoded username and password if ( //Format from https://www.rfc-editor.org/rfc/rfc4616#section-2 //We skip the first field (it's forgery), so the string starts with a null byte !$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 //https://www.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 $line_out) { //Dot-stuffing as per RFC5321 section 4.5.2 //https://www.rfc-editor.org/rfc/rfc5321#section-4.5.2 if (!empty($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 SMTP XCLIENT command to server and check its return code. * * @return bool True on success / public function xclient(array $vars) { $xclient_options = ""; foreach ($vars as $key => $value) { if (in_array($key, SMTP::$xclient_allowed_attributes)) { $xclient_options .= " {$key}={$value}"; } } if (!$xclient_options) { return true; } return $this->sendCommand('XCLIENT', 'XCLIENT' . $xclient_options, 250); } /* * 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: ' . $data, self::DEBUG_CLIENT); } set_error_handler(function () { call_user_func_array([$this, 'errorHandler'], func_get_args()); }); $result = fwrite($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($this->smtp_conn)) { //Must pass vars in here as params are by reference //solution for signals inspired by https://github.com/symfony/symfony/pull/6540 set_error_handler(function () { call_user_func_array([$this, 'errorHandler'], func_get_args()); }); $n = stream_select($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; } }	48 KB	2025-09-05 13:25

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