From b9a3291d5594dc359b60450107d233837943222b Mon Sep 17 00:00:00 2001 From: KALAMHINDINEWS <81422280+KALAMHINDINEWS@users.noreply.github.com> Date: Tue, 6 Apr 2021 02:12:04 +0530 Subject: [PATCH] Create PHPMailer * @author Jim Jagielski (jimjag) * @author Andy Prevost (codeworxtech) * @author Brent R. Matzelle (original founder) * @copyright 2012 - 2020 Marcus Bointon * @copyright 2010 - 2012 Jim Jagielski * @copyright 2004 - 2009 Andy Prevost * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License * @note This program is distributed in the hope that it will be useful - WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. */ namespace PHPMailer\PHPMailer; /** * PHPMailer - PHP email creation and transport class. * * @author Marcus Bointon (Synchro/coolbru) * @author Jim Jagielski (jimjag) * @author Andy Prevost (codeworxtech) * @author Brent R. Matzelle (original founder) */ class PHPMailer { const CHARSET_ASCII = 'us-ascii'; const CHARSET_ISO88591 = 'iso-8859-1'; const CHARSET_UTF8 = 'utf-8'; const CONTENT_TYPE_PLAINTEXT = 'text/plain'; const CONTENT_TYPE_TEXT_CALENDAR = 'text/calendar'; const CONTENT_TYPE_TEXT_HTML = 'text/html'; const CONTENT_TYPE_MULTIPART_ALTERNATIVE = 'multipart/alternative'; const CONTENT_TYPE_MULTIPART_MIXED = 'multipart/mixed'; const CONTENT_TYPE_MULTIPART_RELATED = 'multipart/related'; const ENCODING_7BIT = '7bit'; const ENCODING_8BIT = '8bit'; const ENCODING_BASE64 = 'base64'; const ENCODING_BINARY = 'binary'; const ENCODING_QUOTED_PRINTABLE = 'quoted-printable'; const ENCRYPTION_STARTTLS = 'tls'; const ENCRYPTION_SMTPS = 'ssl'; const ICAL_METHOD_REQUEST = 'REQUEST'; const ICAL_METHOD_PUBLISH = 'PUBLISH'; const ICAL_METHOD_REPLY = 'REPLY'; const ICAL_METHOD_ADD = 'ADD'; const ICAL_METHOD_CANCEL = 'CANCEL'; const ICAL_METHOD_REFRESH = 'REFRESH'; const ICAL_METHOD_COUNTER = 'COUNTER'; const ICAL_METHOD_DECLINECOUNTER = 'DECLINECOUNTER'; /** * Email priority. * Options: null (default), 1 = High, 3 = Normal, 5 = low. * When null, the header is not set at all. * * @var int|null */ public $Priority; /** * The character set of the message. * * @var string */ public $CharSet = self::CHARSET_ISO88591; /** * The MIME Content-type of the message. * * @var string */ public $ContentType = self::CONTENT_TYPE_PLAINTEXT; /** * The message encoding. * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable". * * @var string */ public $Encoding = self::ENCODING_8BIT; /** * Holds the most recent mailer error message. * * @var string */ public $ErrorInfo = ''; /** * The From email address for the message. * * @var string */ public $From = 'root@localhost'; /** * The From name of the message. * * @var string */ public $FromName = 'Root User'; /** * The envelope sender of the message. * This will usually be turned into a Return-Path header by the receiver, * and is the address that bounces will be sent to. * If not empty, will be passed via `-f` to sendmail or as the 'MAIL FROM' value over SMTP. * * @var string */ public $Sender = ''; /** * The Subject of the message. * * @var string */ public $Subject = ''; /** * An HTML or plain text message body. * If HTML then call isHTML(true). * * @var string */ public $Body = ''; /** * The plain-text message body. * This body can be read by mail clients that do not have HTML email * capability such as mutt & Eudora. * Clients that can read HTML will view the normal Body. * * @var string */ public $AltBody = ''; /** * An iCal message part body. * Only supported in simple alt or alt_inline message types * To generate iCal event structures, use classes like EasyPeasyICS or iCalcreator. * * @see http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/ * @see http://kigkonsult.se/iCalcreator/ * * @var string */ public $Ical = ''; /** * Value-array of "method" in Contenttype header "text/calendar" * * @var string[] */ protected static $IcalMethods = [ self::ICAL_METHOD_REQUEST, self::ICAL_METHOD_PUBLISH, self::ICAL_METHOD_REPLY, self::ICAL_METHOD_ADD, self::ICAL_METHOD_CANCEL, self::ICAL_METHOD_REFRESH, self::ICAL_METHOD_COUNTER, self::ICAL_METHOD_DECLINECOUNTER, ]; /** * The complete compiled MIME message body. * * @var string */ protected $MIMEBody = ''; /** * The complete compiled MIME message headers. * * @var string */ protected $MIMEHeader = ''; /** * Extra headers that createHeader() doesn't fold in. * * @var string */ protected $mailHeader = ''; /** * Word-wrap the message body to this number of chars. * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance. * * @see static::STD_LINE_LENGTH * * @var int */ public $WordWrap = 0; /** * Which method to use to send mail. * Options: "mail", "sendmail", or "smtp". * * @var string */ public $Mailer = 'mail'; /** * The path to the sendmail program. * * @var string */ public $Sendmail = '/usr/sbin/sendmail'; /** * Whether mail() uses a fully sendmail-compatible MTA. * One which supports sendmail's "-oi -f" options. * * @var bool */ public $UseSendmailOptions = true; /** * The email address that a reading confirmation should be sent to, also known as read receipt. * * @var string */ public $ConfirmReadingTo = ''; /** * The hostname to use in the Message-ID header and as default HELO string. * If empty, PHPMailer attempts to find one with, in order, * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value * 'localhost.localdomain'. * * @see PHPMailer::$Helo * * @var string */ public $Hostname = ''; /** * An ID to be used in the Message-ID header. * If empty, a unique id will be generated. * You can set your own, but it must be in the format "", * as defined in RFC5322 section 3.6.4 or it will be ignored. * * @see https://tools.ietf.org/html/rfc5322#section-3.6.4 * * @var string */ public $MessageID = ''; /** * The message Date to be used in the Date header. * If empty, the current date will be added. * * @var string */ public $MessageDate = ''; /** * SMTP hosts. * Either a single hostname or multiple semicolon-delimited hostnames. * You can also specify a different port * for each host by using this format: [hostname:port] * (e.g. "smtp1.example.com:25;smtp2.example.com"). * You can also specify encryption type, for example: * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465"). * Hosts will be tried in order. * * @var string */ public $Host = 'localhost'; /** * The default SMTP server port. * * @var int */ public $Port = 25; /** * The SMTP HELO/EHLO name used for the SMTP connection. * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find * one with the same method described above for $Hostname. * * @see PHPMailer::$Hostname * * @var string */ public $Helo = ''; /** * What kind of encryption to use on the SMTP connection. * Options: '', static::ENCRYPTION_STARTTLS, or static::ENCRYPTION_SMTPS. * * @var string */ public $SMTPSecure = ''; /** * Whether to enable TLS encryption automatically if a server supports it, * even if `SMTPSecure` is not set to 'tls'. * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid. * * @var bool */ public $SMTPAutoTLS = true; /** * Whether to use SMTP authentication. * Uses the Username and Password properties. * * @see PHPMailer::$Username * @see PHPMailer::$Password * * @var bool */ public $SMTPAuth = false; /** * Options array passed to stream_context_create when connecting via SMTP. * * @var array */ public $SMTPOptions = []; /** * SMTP username. * * @var string */ public $Username = ''; /** * SMTP password. * * @var string */ public $Password = ''; /** * SMTP auth type. * Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2, attempted in that order if not specified. * * @var string */ public $AuthType = ''; /** * An instance of the PHPMailer OAuth class. * * @var OAuth */ protected $oauth; /** * The SMTP server timeout in seconds. * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2. * * @var int */ public $Timeout = 300; /** * Comma separated list of DSN notifications * 'NEVER' under no circumstances a DSN must be returned to the sender. * If you use NEVER all other notifications will be ignored. * 'SUCCESS' will notify you when your mail has arrived at its destination. * 'FAILURE' will arrive if an error occurred during delivery. * 'DELAY' will notify you if there is an unusual delay in delivery, but the actual * delivery's outcome (success or failure) is not yet decided. * * @see https://tools.ietf.org/html/rfc3461 See section 4.1 for more information about NOTIFY */ public $dsn = ''; /** * SMTP class debug output mode. * Debug output level. * Options: * @see SMTP::DEBUG_OFF: No output * @see SMTP::DEBUG_CLIENT: Client messages * @see SMTP::DEBUG_SERVER: Client and server messages * @see SMTP::DEBUG_CONNECTION: As SERVER plus connection status * @see SMTP::DEBUG_LOWLEVEL: Noisy, low-level data output, rarely needed * * @see SMTP::$do_debug * * @var int */ public $SMTPDebug = 0; /** * How to handle debug output. * Options: * * `echo` Output plain-text as-is, appropriate for CLI * * `html` Output escaped, line breaks converted to `
`, 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 SMTP connection open after each message. * If this is set to true then to close the connection * requires an explicit call to smtpClose(). * * @var bool */ public $SMTPKeepAlive = false; /** * Whether to split multiple to addresses into multiple messages * or send them all in one message. * Only supported in `mail` and `sendmail` transports, not in SMTP. * * @var bool * * @deprecated 6.0.0 PHPMailer isn't a mailing list manager! */ public $SingleTo = false; /** * Storage for addresses when SingleTo is enabled. * * @var array */ protected $SingleToArray = []; /** * Whether to generate VERP addresses on send. * Only applicable when sending via SMTP. * * @see https://en.wikipedia.org/wiki/Variable_envelope_return_path * @see http://www.postfix.org/VERP_README.html Postfix VERP info * * @var bool */ public $do_verp = false; /** * Whether to allow sending messages with an empty body. * * @var bool */ public $AllowEmpty = false; /** * DKIM selector. * * @var string */ public $DKIM_selector = ''; /** * DKIM Identity. * Usually the email address used as the source of the email. * * @var string */ public $DKIM_identity = ''; /** * DKIM passphrase. * Used if your key is encrypted. * * @var string */ public $DKIM_passphrase = ''; /** * DKIM signing domain name. * * @example 'example.com' * * @var string */ public $DKIM_domain = ''; /** * DKIM Copy header field values for diagnostic use. * * @var bool */ public $DKIM_copyHeaderFields = true; /** * DKIM Extra signing headers. * * @example ['List-Unsubscribe', 'List-Help'] * * @var array */ public $DKIM_extraHeaders = []; /** * DKIM private key file path. * * @var string */ public $DKIM_private = ''; /** * DKIM private key string. * * If set, takes precedence over `$DKIM_private`. * * @var string */ public $DKIM_private_string = ''; /** * Callback Action function name. * * The function that handles the result of the send email action. * It is called out by send() for each email sent. * * Value can be any php callable: http://www.php.net/is_callable * * Parameters: * bool $result result of the send action * array $to email addresses of the recipients * array $cc cc email addresses * array $bcc bcc email addresses * string $subject the subject * string $body the email body * string $from email address of sender * string $extra extra information of possible use * "smtp_transaction_id' => last smtp transaction id * * @var string */ public $action_function = ''; /** * What to put in the X-Mailer header. * Options: An empty string for PHPMailer default, whitespace/null for none, or a string to use. * * @var string|null */ public $XMailer = ''; /** * Which validator to use by default when validating email addresses. * May be a callable to inject your own validator, but there are several built-in validators. * The default validator uses PHP's FILTER_VALIDATE_EMAIL filter_var option. * * @see PHPMailer::validateAddress() * * @var string|callable */ public static $validator = 'php'; /** * An instance of the SMTP sender class. * * @var SMTP */ protected $smtp; /** * The array of 'to' names and addresses. * * @var array */ protected $to = []; /** * The array of 'cc' names and addresses. * * @var array */ protected $cc = []; /** * The array of 'bcc' names and addresses. * * @var array */ protected $bcc = []; /** * The array of reply-to names and addresses. * * @var array */ protected $ReplyTo = []; /** * An array of all kinds of addresses. * Includes all of $to, $cc, $bcc. * * @see PHPMailer::$to * @see PHPMailer::$cc * @see PHPMailer::$bcc * * @var array */ protected $all_recipients = []; /** * An array of names and addresses queued for validation. * In send(), valid and non duplicate entries are moved to $all_recipients * and one of $to, $cc, or $bcc. * This array is used only for addresses with IDN. * * @see PHPMailer::$to * @see PHPMailer::$cc * @see PHPMailer::$bcc * @see PHPMailer::$all_recipients * * @var array */ protected $RecipientsQueue = []; /** * An array of reply-to names and addresses queued for validation. * In send(), valid and non duplicate entries are moved to $ReplyTo. * This array is used only for addresses with IDN. * * @see PHPMailer::$ReplyTo * * @var array */ protected $ReplyToQueue = []; /** * The array of attachments. * * @var array */ protected $attachment = []; /** * The array of custom headers. * * @var array */ protected $CustomHeader = []; /** * The most recent Message-ID (including angular brackets). * * @var string */ protected $lastMessageID = ''; /** * The message's MIME type. * * @var string */ protected $message_type = ''; /** * The array of MIME boundary strings. * * @var array */ protected $boundary = []; /** * The array of available languages. * * @var array */ protected $language = []; /** * The number of errors encountered. * * @var int */ protected $error_count = 0; /** * The S/MIME certificate file path. * * @var string */ protected $sign_cert_file = ''; /** * The S/MIME key file path. * * @var string */ protected $sign_key_file = ''; /** * The optional S/MIME extra certificates ("CA Chain") file path. * * @var string */ protected $sign_extracerts_file = ''; /** * The S/MIME password for the key. * Used only if the key is encrypted. * * @var string */ protected $sign_key_pass = ''; /** * Whether to throw exceptions for errors. * * @var bool */ protected $exceptions = false; /** * Unique ID used for message ID and boundaries. * * @var string */ protected $uniqueid = ''; /** * The PHPMailer Version number. * * @var string */ const VERSION = '6.4.0'; /** * Error severity: message only, continue processing. * * @var int */ const STOP_MESSAGE = 0; /** * Error severity: message, likely ok to continue processing. * * @var int */ const STOP_CONTINUE = 1; /** * Error severity: message, plus full stop, critical error reached. * * @var int */ const STOP_CRITICAL = 2; /** * The SMTP standard CRLF line break. * If you want to change line break format, change static::$LE, not this. */ const CRLF = "\r\n"; /** * "Folding White Space" a white space string used for line folding. */ const FWS = ' '; /** * SMTP RFC standard line ending; Carriage Return, Line Feed. * * @var string */ protected static $LE = self::CRLF; /** * The maximum line length supported by mail(). * * Background: mail() will sometimes corrupt messages * with headers headers longer than 65 chars, see #818. * * @var int */ const MAIL_MAX_LINE_LENGTH = 63; /** * The maximum line length allowed by RFC 2822 section 2.1.1. * * @var int */ const MAX_LINE_LENGTH = 998; /** * The lower maximum line length allowed by RFC 2822 section 2.1.1. * This length does NOT include the line break * 76 means that lines will be 77 or 78 chars depending on whether * the line break format is LF or CRLF; both are valid. * * @var int */ const STD_LINE_LENGTH = 76; /** * Constructor. * * @param bool $exceptions Should we throw external exceptions? */ public function __construct($exceptions = null) { if (null !== $exceptions) { $this->exceptions = (bool) $exceptions; } //Pick an appropriate debug output format automatically $this->Debugoutput = (strpos(PHP_SAPI, 'cli') !== false ? 'echo' : 'html'); } /** * Destructor. */ public function __destruct() { //Close any open SMTP connection nicely $this->smtpClose(); } /** * Call mail() in a safe_mode-aware fashion. * Also, unless sendmail_path points to sendmail (or something that * claims to be sendmail), don't pass params (not a perfect fix, * but it will do). * * @param string $to To * @param string $subject Subject * @param string $body Message Body * @param string $header Additional Header(s) * @param string|null $params Params * * @return bool */ private function mailPassthru($to, $subject, $body, $header, $params) { //Check overloading of mail function to avoid double-encoding if (ini_get('mbstring.func_overload') & 1) { $subject = $this->secureHeader($subject); } else { $subject = $this->encodeHeader($this->secureHeader($subject)); } //Calling mail() with null params breaks $this->edebug('Sending with mail()'); $this->edebug('Sendmail path: ' . ini_get('sendmail_path')); $this->edebug("Envelope sender: {$this->Sender}"); $this->edebug("To: {$to}"); $this->edebug("Subject: {$subject}"); $this->edebug("Headers: {$header}"); if (!$this->UseSendmailOptions || null === $params) { $result = @mail($to, $subject, $body, $header); } else { $this->edebug("Additional params: {$params}"); $result = @mail($to, $subject, $body, $header, $params); } $this->edebug('Result: ' . ($result ? 'true' : 'false')); return $result; } /** * Output debugging info via a user-defined method. * Only generates output if debug output is enabled. * * @see PHPMailer::$Debugoutput * @see PHPMailer::$SMTPDebug * * @param string $str */ protected function edebug($str) { if ($this->SMTPDebug <= 0) { return; } //Is this a PSR-3 logger? if ($this->Debugoutput instanceof \Psr\Log\LoggerInterface) { $this->Debugoutput->debug($str); return; } //Avoid clash with built-in function names if (is_callable($this->Debugoutput) && !in_array($this->Debugoutput, ['error_log', 'html', 'echo'])) { call_user_func($this->Debugoutput, $str, $this->SMTPDebug); return; } switch ($this->Debugoutput) { case 'error_log': //Don't output, just log /** @noinspection ForgottenDebugOutputInspection */ error_log($str); break; case 'html': //Cleans up output a bit for a better looking, HTML-safe output echo htmlentities( preg_replace('/[\r\n]+/', '', $str), ENT_QUOTES, 'UTF-8' ), "
\n"; break; case 'echo': default: //Normalize line breaks $str = preg_replace('/\r\n|\r/m', "\n", $str); echo gmdate('Y-m-d H:i:s'), "\t", //Trim trailing space trim( //Indent for readability, except for trailing break str_replace( "\n", "\n \t ", trim($str) ) ), "\n"; } } /** * Sets message type to HTML or plain. * * @param bool $isHtml True for HTML mode */ public function isHTML($isHtml = true) { if ($isHtml) { $this->ContentType = static::CONTENT_TYPE_TEXT_HTML; } else { $this->ContentType = static::CONTENT_TYPE_PLAINTEXT; } } /** * Send messages using SMTP. */ public function isSMTP() { $this->Mailer = 'smtp'; } /** * Send messages using PHP's mail() function. */ public function isMail() { $this->Mailer = 'mail'; } /** * Send messages using $Sendmail. */ public function isSendmail() { $ini_sendmail_path = ini_get('sendmail_path'); if (false === stripos($ini_sendmail_path, 'sendmail')) { $this->Sendmail = '/usr/sbin/sendmail'; } else { $this->Sendmail = $ini_sendmail_path; } $this->Mailer = 'sendmail'; } /** * Send messages using qmail. */ public function isQmail() { $ini_sendmail_path = ini_get('sendmail_path'); if (false === stripos($ini_sendmail_path, 'qmail')) { $this->Sendmail = '/var/qmail/bin/qmail-inject'; } else { $this->Sendmail = $ini_sendmail_path; } $this->Mailer = 'qmail'; } /** * Add a "To" address. * * @param string $address The email address to send to * @param string $name * * @throws Exception * * @return bool true on success, false if address already used or invalid in some way */ public function addAddress($address, $name = '') { return $this->addOrEnqueueAnAddress('to', $address, $name); } /** * Add a "CC" address. * * @param string $address The email address to send to * @param string $name * * @throws Exception * * @return bool true on success, false if address already used or invalid in some way */ public function addCC($address, $name = '') { return $this->addOrEnqueueAnAddress('cc', $address, $name); } /** * Add a "BCC" address. * * @param string $address The email address to send to * @param string $name * * @throws Exception * * @return bool true on success, false if address already used or invalid in some way */ public function addBCC($address, $name = '') { return $this->addOrEnqueueAnAddress('bcc', $address, $name); } /** * Add a "Reply-To" address. * * @param string $address The email address to reply to * @param string $name * * @throws Exception * * @return bool true on success, false if address already used or invalid in some way */ public function addReplyTo($address, $name = '') { return $this->addOrEnqueueAnAddress('Reply-To', $address, $name); } /** * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still * be modified after calling this function), addition of such addresses is delayed until send(). * Addresses that have been added already return false, but do not throw exceptions. * * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo' * @param string $address The email address to send, resp. to reply to * @param string $name * * @throws Exception * * @return bool true on success, false if address already used or invalid in some way */ protected function addOrEnqueueAnAddress($kind, $address, $name) { $address = trim($address); $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim $pos = strrpos($address, '@'); if (false === $pos) { //At-sign is missing. $error_message = sprintf( '%s (%s): %s', $this->lang('invalid_address'), $kind, $address ); $this->setError($error_message); $this->edebug($error_message); if ($this->exceptions) { throw new Exception($error_message); } return false; } $params = [$kind, $address, $name]; //Enqueue addresses with IDN until we know the PHPMailer::$CharSet. if (static::idnSupported() && $this->has8bitChars(substr($address, ++$pos))) { if ('Reply-To' !== $kind) { if (!array_key_exists($address, $this->RecipientsQueue)) { $this->RecipientsQueue[$address] = $params; return true; } } elseif (!array_key_exists($address, $this->ReplyToQueue)) { $this->ReplyToQueue[$address] = $params; return true; } return false; } //Immediately add standard addresses without IDN. return call_user_func_array([$this, 'addAnAddress'], $params); } /** * Add an address to one of the recipient arrays or to the ReplyTo array. * Addresses that have been added already return false, but do not throw exceptions. * * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo' * @param string $address The email address to send, resp. to reply to * @param string $name * * @throws Exception * * @return bool true on success, false if address already used or invalid in some way */ protected function addAnAddress($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
" into an array of name/address pairs. * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available. * Note that quotes in the name part are removed. * * @see http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation * * @param string $addrstr The address list string * @param bool $useimap Whether to use the IMAP extension to parse the list * * @return array */ public static function parseAddresses($addrstr, $useimap = true) { $addresses = []; if ($useimap && function_exists('imap_rfc822_parse_adrlist')) { //Use this built-in parser if it's available $list = imap_rfc822_parse_adrlist($addrstr, ''); foreach ($list as $address) { if ( ('.SYNTAX-ERROR.' !== $address->host) && static::validateAddress( $address->mailbox . '@' . $address->host ) ) { //Decode the name part if it's present and encoded if ( property_exists($address, 'personal') && extension_loaded('mbstring') && preg_match('/^=\?.*\?=$/', $address->personal) ) { $address->personal = mb_decode_mimeheader($address->personal); } $addresses[] = [ 'name' => (property_exists($address, 'personal') ? $address->personal : ''), 'address' => $address->mailbox . '@' . $address->host, ]; } } } else { //Use this simpler parser $list = explode(',', $addrstr); foreach ($list as $address) { $address = trim($address); //Is there a separate name part? if (strpos($address, '<') === false) { //No separate name, just use the whole thing if (static::validateAddress($address)) { $addresses[] = [ 'name' => '', 'address' => $address, ]; } } else { list($name, $email) = explode('<', $address); $email = trim(str_replace('>', '', $email)); $name = trim($name); if (static::validateAddress($email)) { //If this name is encoded, decode it if (preg_match('/^=\?.*\?=$/', $name)) { $name = mb_decode_mimeheader($name); } $addresses[] = [ //Remove any surrounding quotes and spaces from the name 'name' => trim($name, '\'" '), 'address' => $email, ]; } } } } return $addresses; } /** * Set the From and FromName properties. * * @param string $address * @param string $name * @param bool $auto Whether to also set the Sender address, defaults to true * * @throws Exception * * @return bool */ public function setFrom($address, $name = '', $auto = true) { $address = trim($address); $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim //Don't validate now addresses with IDN. Will be done in send(). $pos = strrpos($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; } if (is_callable($patternselect)) { return call_user_func($patternselect, $address); } //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321 if (strpos($address, "\n") !== false || strpos($address, "\r") !== false) { return false; } switch ($patternselect) { case 'pcre': //Kept for BC case 'pcre8': /* * A more complex and more permissive version of the RFC5322 regex on which FILTER_VALIDATE_EMAIL * is based. * In addition to the addresses allowed by filter_var, also permits: * * dotless domains: `a@b` * * comments: `1234 @ local(blah) .machine .example` * * quoted elements: `'"test blah"@example.org'` * * numeric TLDs: `a@b.123` * * unbracketed IPv4 literals: `a@192.168.0.1` * * IPv6 literals: 'first.last@[IPv6:a1::]' * Not all of these will necessarily work for sending! * * @see http://squiloople.com/2009/12/20/email-address-validation/ * @copyright 2009-2010 Michael Rushton * Feel free to use and redistribute this code. But please keep this copyright notice. */ return (bool) preg_match( '/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' . '((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' . '(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' . '([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' . '(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' . '(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' . '|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' . '|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' . '|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD', $address ); case 'html5': /* * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements. * * @see https://html.spec.whatwg.org/#e-mail-state-(type=email) */ return (bool) preg_match( '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' . '[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD', $address ); case 'php': default: return filter_var($address, FILTER_VALIDATE_EMAIL) !== false; } } /** * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the * `intl` and `mbstring` PHP extensions. * * @return bool `true` if required functions for IDN support are present */ public static function idnSupported() { return function_exists('idn_to_ascii') && function_exists('mb_convert_encoding'); } /** * Converts IDN in given email address to its ASCII form, also known as punycode, if possible. * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet. * This function silently returns unmodified address if: * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form) * - Conversion to punycode is impossible (e.g. required PHP functions are not available) * or fails for any reason (e.g. domain contains characters not allowed in an IDN). * * @see PHPMailer::$CharSet * * @param string $address The email address to convert * * @return string The encoded address in ASCII form */ public function punyencodeAddress($address) { //Verify we have required functions, CharSet, and at-sign. $pos = strrpos($address, '@'); if ( !empty($this->CharSet) && false !== $pos && static::idnSupported() ) { $domain = substr($address, ++$pos); //Verify CharSet string is a valid one, and domain properly encoded in this CharSet. if ($this->has8bitChars($domain) && @mb_check_encoding($domain, $this->CharSet)) { //Convert the domain from whatever charset it's in to UTF-8 $domain = mb_convert_encoding($domain, self::CHARSET_UTF8, $this->CharSet); //Ignore IDE complaints about this line - method signature changed in PHP 5.4 $errorcode = 0; if (defined('INTL_IDNA_VARIANT_UTS46')) { //Use the current punycode standard (appeared in PHP 7.2) $punycode = idn_to_ascii($domain, $errorcode, \INTL_IDNA_VARIANT_UTS46); } elseif (defined('INTL_IDNA_VARIANT_2003')) { //Fall back to this old, deprecated/removed encoding $punycode = idn_to_ascii($domain, $errorcode, \INTL_IDNA_VARIANT_2003); } else { //Fall back to a default we don't know about $punycode = idn_to_ascii($domain, $errorcode); } if (false !== $punycode) { return substr($address, 0, $pos) . $punycode; } } } return $address; } /** * Create a message and send it. * Uses the sending method specified by $Mailer. * * @throws Exception * * @return bool false on error - See the ErrorInfo property for details of the error */ public function send() { try { if (!$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( 'Your version of PHP is affected by a bug that may result in corrupted messages.' . ' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' . ' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.', E_USER_WARNING ); } try { $this->error_count = 0; //Reset errors $this->mailHeader = ''; //Dequeue recipient and Reply-To addresses with IDN foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) { $params[1] = $this->punyencodeAddress($params[1]); call_user_func_array([$this, 'addAnAddress'], $params); } if (count($this->to) + count($this->cc) + count($this->bcc) < 1) { throw new Exception($this->lang('provide_address'), self::STOP_CRITICAL); } //Validate From, Sender, and ConfirmReadingTo addresses foreach (['From', 'Sender', 'ConfirmReadingTo'] as $address_kind) { $this->$address_kind = trim($this->$address_kind); if (empty($this->$address_kind)) { continue; } $this->$address_kind = $this->punyencodeAddress($this->$address_kind); if (!static::validateAddress($this->$address_kind)) { $error_message = sprintf( '%s (%s): %s', $this->lang('invalid_address'), $address_kind, $this->$address_kind ); $this->setError($error_message); $this->edebug($error_message); if ($this->exceptions) { throw new Exception($error_message); } return false; } } //Set whether the message is multipart/alternative if ($this->alternativeExists()) { $this->ContentType = static::CONTENT_TYPE_MULTIPART_ALTERNATIVE; } $this->setMessageType(); //Refuse to send an empty message unless we are specifically allowing it if (!$this->AllowEmpty && empty($this->Body)) { throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL); } //Trim subject consistently $this->Subject = trim($this->Subject); //Create body before headers in case body makes changes to headers (e.g. altering transfer encoding) $this->MIMEHeader = ''; $this->MIMEBody = $this->createBody(); //createBody may have added some headers, so retain them $tempheaders = $this->MIMEHeader; $this->MIMEHeader = $this->createHeader(); $this->MIMEHeader .= $tempheaders; //To capture the complete message when using mail(), create //an extra header list which createHeader() doesn't fold in if ('mail' === $this->Mailer) { if (count($this->to) > 0) { $this->mailHeader .= $this->addrAppend('To', $this->to); } else { $this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;'); } $this->mailHeader .= $this->headerLine( 'Subject', $this->encodeHeader($this->secureHeader($this->Subject)) ); } //Sign with DKIM if enabled if ( !empty($this->DKIM_domain) && !empty($this->DKIM_selector) && (!empty($this->DKIM_private_string) || (!empty($this->DKIM_private) && static::isPermittedPath($this->DKIM_private) && file_exists($this->DKIM_private) ) ) ) { $header_dkim = $this->DKIM_Add( $this->MIMEHeader . $this->mailHeader, $this->encodeHeader($this->secureHeader($this->Subject)), $this->MIMEBody ); $this->MIMEHeader = static::stripTrailingWSP($this->MIMEHeader) . static::$LE . static::normalizeBreaks($header_dkim) . static::$LE; } return true; } catch (Exception $exc) { $this->setError($exc->getMessage()); if ($this->exceptions) { throw $exc; } return false; } } /** * Actually send a message via the selected mechanism. * * @throws Exception * * @return bool */ public function postSend() { try { //Choose the mailer and send through it switch ($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 $exc) { if ($this->Mailer === 'smtp' && $this->SMTPKeepAlive == true) { $this->smtp->reset(); } $this->setError($exc->getMessage()); $this->edebug($exc->getMessage()); if ($this->exceptions) { throw $exc; } } return false; } /** * Send mail using the $Sendmail program. * * @see PHPMailer::$Sendmail * * @param string $header The message headers * @param string $body The message body * * @throws Exception * * @return bool */ protected function sendmailSend($header, $body) { if ($this->Mailer === 'qmail') { $this->edebug('Sending with qmail'); } else { $this->edebug('Sending with sendmail'); } $header = static::stripTrailingWSP($header) . static::$LE . static::$LE; //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver //A space after `-f` is optional, but there is a long history of its presence //causing problems, so we don't use one //Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html //Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html //Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html //Example problem: https://www.drupal.org/node/1057954 if (empty($this->Sender) && !empty(ini_get('sendmail_from'))) { //PHP config has a sender address we can use $this->Sender = ini_get('sendmail_from'); } //CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped. if (!empty($this->Sender) && static::validateAddress($this->Sender) && self::isShellSafe($this->Sender)) { if ($this->Mailer === 'qmail') { $sendmailFmt = '%s -f%s'; } else { $sendmailFmt = '%s -oi -f%s -t'; } } else { //allow sendmail to choose a default envelope sender. It may //seem preferable to force it to use the From header as with //SMTP, but that introduces new problems (see //), 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); $this->doCallback( ($result === 0), [$toAddr], $this->cc, $this->bcc, $this->Subject, $body, $this->From, [] ); $this->edebug("Result: " . ($result === 0 ? 'true' : 'false')); if (0 !== $result) { throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL); } } } else { $mail = @popen($sendmail, 'w'); if (!$mail) { throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL); } fwrite($mail, $header); fwrite($mail, $body); $result = pclose($mail); $this->doCallback( ($result === 0), $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From, [] ); $this->edebug("Result: " . ($result === 0 ? 'true' : 'false')); if (0 !== $result) { throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL); } } return true; } /** * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters. * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows. * * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report * * @param string $string The string to be validated * * @return bool */ protected static function isShellSafe($string) { //Future-proof if ( escapeshellcmd($string) !== $string || !in_array(escapeshellarg($string), ["'$string'", "\"$string\""]) ) { return false; } $length = strlen($string); for ($i = 0; $i < $length; ++$i) { $c = $string[$i]; //All other characters have a special meaning in at least one common shell, including = and +. //Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here. //Note that this does permit non-Latin alphanumeric characters based on the current locale. if (!ctype_alnum($c) && strpos('@_-.', $c) === false) { return false; } } return true; } /** * Check whether a file path is of a permitted type. * Used to reject URLs and phar files from functions that access local file paths, * such as addAttachment. * * @param string $path A relative or absolute path to a file * * @return bool */ protected static function isPermittedPath($path) { return !preg_match('#^[a-z]+://#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) { $readable = file_exists($path); //If not a UNC path (expected to start with \\), check read permission, see #2069 if (strpos($path, '\\\\') !== 0) { $readable = $readable && is_readable($path); } return static::isPermittedPath($path) && $readable; } /** * Send mail using the PHP mail() function. * * @see http://www.php.net/manual/en/book.mail.php * * @param string $header The message headers * @param string $body The message body * * @throws Exception * * @return bool */ protected function mailSend($header, $body) { $header = static::stripTrailingWSP($header) . static::$LE . static::$LE; $toArr = []; foreach ($this->to as $toaddr) { $toArr[] = $this->addrFormat($toaddr); } $to = implode(', ', $toArr); $params = null; //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver //A space after `-f` is optional, but there is a long history of its presence //causing problems, so we don't use one //Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html //Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html //Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html //Example problem: https://www.drupal.org/node/1057954 //CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped. if (empty($this->Sender) && !empty(ini_get('sendmail_from'))) { //PHP config has a sender address we can use $this->Sender = ini_get('sendmail_from'); } if (!empty($this->Sender) && static::validateAddress($this->Sender)) { if (self::isShellSafe($this->Sender)) { $params = sprintf('-f%s', $this->Sender); } $old_from = ini_get('sendmail_from'); ini_set('sendmail_from', $this->Sender); } $result = false; if ($this->SingleTo && count($toArr) > 1) { foreach ($toArr as $toAddr) { $result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params); $this->doCallback($result, [$toAddr], $this->cc, $this->bcc, $this->Subject, $body, $this->From, []); } } else { $result = $this->mailPassthru($to, $this->Subject, $body, $header, $params); $this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From, []); } if (isset($old_from)) { ini_set('sendmail_from', $old_from); } if (!$result) { throw new Exception($this->lang('instantiate'), self::STOP_CRITICAL); } return true; } /** * Get an instance to use for SMTP operations. * Override this function to load your own SMTP implementation, * or set one with setSMTPInstance. * * @return SMTP */ public function getSMTPInstance() { if (!is_object($this->smtp)) { $this->smtp = new SMTP(); } return $this->smtp; } /** * Provide an instance to use for SMTP operations. * * @return SMTP */ public function setSMTPInstance(SMTP $smtp) { $this->smtp = $smtp; return $this->smtp; } /** * Send mail via SMTP. * Returns false if there is a bad MAIL FROM, RCPT, or DATA input. * * @see PHPMailer::setSMTPInstance() to use a different class. * * @uses \PHPMailer\PHPMailer\SMTP * * @param string $header The message headers * @param string $body The message body * * @throws Exception * * @return bool */ protected function smtpSend($header, $body) { $header = static::stripTrailingWSP($header) . static::$LE . static::$LE; $bad_rcpt = []; if (!$this->smtpConnect($this->SMTPOptions)) { throw new Exception($this->lang('smtp_connect_failed'), self::STOP_CRITICAL); } //Sender already validated in preSend() if ('' === $this->Sender) { $smtp_from = $this->From; } else { $smtp_from = $this->Sender; } if (!$this->smtp->mail($smtp_from)) { $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError())); throw new Exception($this->ErrorInfo, self::STOP_CRITICAL); } $callbacks = []; //Attempt to send to all recipients foreach ([$this->to, $this->cc, $this->bcc] as $togroup) { foreach ($togroup as $to) { if (!$this->smtp->recipient($to[0], $this->dsn)) { $error = $this->smtp->getError(); $bad_rcpt[] = ['to' => $to[0], 'error' => $error['detail']]; $isSent = false; } else { $isSent = true; } $callbacks[] = ['issent' => $isSent, 'to' => $to[0]]; } } //Only send the DATA command if we have viable recipients if ((count($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']], [], [], $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); $hosts = explode(';', $this->Host); $lastexception = null; foreach ($hosts as $hostentry) { $hostinfo = []; if ( !preg_match( '/^(?:(ssl|tls):\/\/)?(.+?)(?::(\d+))?$/', trim($hostentry), $hostinfo ) ) { $this->edebug($this->lang('invalid_hostentry') . ' ' . trim($hostentry)); //Not a valid host entry continue; } //$hostinfo[1]: optional ssl or tls prefix //$hostinfo[2]: the hostname //$hostinfo[3]: optional port number //The host string prefix can temporarily override the current setting for SMTPSecure //If it's not specified, the default value is used //Check the host name is a valid name or IP address before trying to use it if (!static::isValidHost($hostinfo[2])) { $this->edebug($this->lang('invalid_host') . ' ' . $hostinfo[2]); continue; } $prefix = ''; $secure = $this->SMTPSecure; $tls = (static::ENCRYPTION_STARTTLS === $this->SMTPSecure); if ('ssl' === $hostinfo[1] || ('' === $hostinfo[1] && static::ENCRYPTION_SMTPS === $this->SMTPSecure)) { $prefix = 'ssl://'; $tls = false; //Can't have SSL and TLS at the same time $secure = static::ENCRYPTION_SMTPS; } elseif ('tls' === $hostinfo[1]) { $tls = true; //TLS doesn't use a prefix $secure = static::ENCRYPTION_STARTTLS; } //Do we need the OpenSSL extension? $sslext = defined('OPENSSL_ALGO_SHA256'); if (static::ENCRYPTION_STARTTLS === $secure || static::ENCRYPTION_SMTPS === $secure) { //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled if (!$sslext) { throw new Exception($this->lang('extension_missing') . 'openssl', self::STOP_CRITICAL); } } $host = $hostinfo[2]; $port = $this->Port; if ( array_key_exists(3, $hostinfo) && is_numeric($hostinfo[3]) && $hostinfo[3] > 0 && $hostinfo[3] < 65536 ) { $port = (int) $hostinfo[3]; } if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) { try { if ($this->Helo) { $hello = $this->Helo; } else { $hello = $this->serverHostname(); } $this->smtp->hello($hello); //Automatically enable TLS encryption if: //* it's not disabled //* we have openssl extension //* we are not already using SSL //* the server offers STARTTLS if ($this->SMTPAutoTLS && $sslext && 'ssl' !== $secure && $this->smtp->getServerExt('STARTTLS')) { $tls = true; } if ($tls) { if (!$this->smtp->startTLS()) { throw new Exception($this->lang('connect_host')); } //We must resend EHLO after TLS negotiation $this->smtp->hello($hello); } if ( $this->SMTPAuth && !$this->smtp->authenticate( $this->Username, $this->Password, $this->AuthType, $this->oauth ) ) { throw new Exception($this->lang('authenticate')); } return true; } catch (Exception $exc) { $lastexception = $exc; $this->edebug($exc->getMessage()); //We must have connected, but then failed TLS or Auth, so close connection nicely $this->smtp->quit(); } } } //If we get here, all connection attempts have failed, so close connection hard $this->smtp->close(); //As we've caught all exceptions, just report whatever the last one was if ($this->exceptions && null !== $lastexception) { throw $lastexception; } return false; } /** * Close the active SMTP session if one exists. */ public function smtpClose() { if ((null !== $this->smtp) && $this->smtp->connected()) { $this->smtp->quit(); $this->smtp->close(); } } /** * Set the language for error messages. * Returns false if it cannot load the language file. * The default language is English. * * @param string $langcode ISO 639-1 2-character language code (e.g. French is "fr") * @param string $lang_path Path to the language file directory, with trailing separator (slash) * * @return bool */ public function setLanguage($langcode = 'en', $lang_path = '') { //Backwards compatibility for renamed language codes $renamed_langcodes = [ 'br' => 'pt_br', 'cz' => 'cs', 'dk' => 'da', 'no' => 'nb', 'se' => 'sv', 'rs' => 'sr', 'tg' => 'tl', 'am' => 'hy', ]; if (array_key_exists($langcode, $renamed_langcodes)) { $langcode = $renamed_langcodes[$langcode]; } //Define full set of translatable strings in English $PHPMAILER_LANG = [ 'authenticate' => 'SMTP Error: Could not authenticate.', 'connect_host' => 'SMTP Error: Could not connect to SMTP host.', 'data_not_accepted' => 'SMTP Error: data not accepted.', 'empty_message' => 'Message body empty', 'encoding' => 'Unknown encoding: ', 'execute' => 'Could not execute: ', 'file_access' => 'Could not access file: ', 'file_open' => 'File Error: Could not open file: ', 'from_failed' => 'The following From address failed: ', 'instantiate' => 'Could not instantiate mail function.', 'invalid_address' => 'Invalid address: ', 'invalid_hostentry' => 'Invalid hostentry: ', 'invalid_host' => 'Invalid host: ', 'mailer_not_supported' => ' mailer is not supported.', 'provide_address' => 'You must provide at least one recipient email address.', 'recipients_failed' => 'SMTP Error: The following recipients failed: ', 'signing' => 'Signing Error: ', 'smtp_connect_failed' => 'SMTP connect() failed.', 'smtp_error' => 'SMTP server error: ', 'variable_set' => 'Cannot set or reset variable: ', 'extension_missing' => 'Extension missing: ', ]; if (empty($lang_path)) { //Calculate an absolute path so it can work if CWD is not here $lang_path = dirname(__DIR__) . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR; } //Validate $langcode if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) { $langcode = 'en'; } $foundlang = true; $lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php'; //There is no English translation file if ('en' !== $langcode) { //Make sure language file path is readable if (!static::fileIsAccessible($lang_file)) { $foundlang = false; } else { //Overwrite language-specific strings. //This way we'll never have missing translation keys. $foundlang = include $lang_file; } } $this->language = $PHPMAILER_LANG; return (bool) $foundlang; //Returns false if language not found } /** * Get the array of strings for the current language. * * @return array */ public function getTranslations() { return $this->language; } /** * Create recipient headers. * * @param string $type * @param array $addr An array of recipients, * where each recipient is a 2-element indexed array with element 0 containing an address * and element 1 containing a name, like: * [['joe@example.com', 'Joe User'], ['zoe@example.com', 'Zoe User']] * * @return string */ public function addrAppend($type, $addr) { $addresses = []; foreach ($addr as $address) { $addresses[] = $this->addrFormat($address); } return $type . ': ' . implode(', ', $addresses) . static::$LE; } /** * Format an address for use in a message header. * * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name like * ['joe@example.com', 'Joe User'] * * @return string */ public function addrFormat($addr) { if (empty($addr[1])) { //No name provided return $this->secureHeader($addr[0]); } return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . ' <' . $this->secureHeader($addr[0]) . '>'; } /** * Word-wrap message. * For use with mailers that do not automatically perform wrapping * and for quoted-printable encoded messages. * Original written by philippe. * * @param string $message The message to wrap * @param int $length The line length to wrap to * @param bool $qp_mode Whether to run in Quoted-Printable mode * * @return string */ public function wrapText($message, $length, $qp_mode = false) { if ($qp_mode) { $soft_break = sprintf(' =%s', static::$LE); } else { $soft_break = static::$LE; } //If utf-8 encoding is used, we will need to make sure we don't //split multibyte characters when we wrap $is_utf8 = static::CHARSET_UTF8 === strtolower($this->CharSet); $lelen = strlen(static::$LE); $crlflen = strlen(static::$LE); $message = static::normalizeBreaks($message); //Remove a trailing line break if (substr($message, -$lelen) === static::$LE) { $message = substr($message, 0, -$lelen); } //Split message into lines $lines = explode(static::$LE, $message); //Message will be rebuilt in here $message = ''; foreach ($lines as $line) { $words = explode(' ', $line); $buf = ''; $firstword = true; foreach ($words as $word) { if ($qp_mode && (strlen($word) > $length)) { $space_left = $length - strlen($buf) - $crlflen; if (!$firstword) { if ($space_left > 20) { $len = $space_left; if ($is_utf8) { $len = $this->utf8CharBoundary($word, $len); } elseif ('=' === substr($word, $len - 1, 1)) { --$len; } elseif ('=' === substr($word, $len - 2, 1)) { $len -= 2; } $part = substr($word, 0, $len); $word = substr($word, $len); $buf .= ' ' . $part; $message .= $buf . sprintf('=%s', static::$LE); } else { $message .= $buf . $soft_break; } $buf = ''; } while ($word !== '') { if ($length <= 0) { break; } $len = $length; if ($is_utf8) { $len = $this->utf8CharBoundary($word, $len); } elseif ('=' === substr($word, $len - 1, 1)) { --$len; } elseif ('=' === substr($word, $len - 2, 1)) { $len -= 2; } $part = substr($word, 0, $len); $word = (string) substr($word, $len); if ($word !== '') { $message .= $part . sprintf('=%s', static::$LE); } else { $buf = $part; } } } else { $buf_o = $buf; if (!$firstword) { $buf .= ' '; } $buf .= $word; if ('' !== $buf_o && strlen($buf) > $length) { $message .= $buf_o . $soft_break; $buf = $word; } } $firstword = false; } $message .= $buf . static::$LE; } return $message; } /** * Find the last character boundary prior to $maxLength in a utf-8 * quoted-printable encoded string. * Original written by Colin Brown. * * @param string $encodedText utf-8 QP text * @param int $maxLength Find the last character boundary prior to this length * * @return int */ public function utf8CharBoundary($encodedText, $maxLength) { $foundSplitPos = false; $lookBack = 3; while (!$foundSplitPos) { $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack); $encodedCharPos = strpos($lastChunk, '='); if (false !== $encodedCharPos) { //Found start of encoded character byte within $lookBack block. //Check the encoded byte value (the 2 chars after the '=') $hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2); $dec = hexdec($hex); if ($dec < 128) { //Single byte character. //If the encoded char was found at pos 0, it will fit //otherwise reduce maxLength to start of the encoded char if ($encodedCharPos > 0) { $maxLength -= $lookBack - $encodedCharPos; } $foundSplitPos = true; } elseif ($dec >= 192) { //First byte of a multi byte character //Reduce maxLength to split at start of character $maxLength -= $lookBack - $encodedCharPos; $foundSplitPos = true; } elseif ($dec < 192) { //Middle byte of a multi byte character, look further back $lookBack += 3; } } else { //No encoded character found $foundSplitPos = true; } } return $maxLength; } /** * Apply word wrapping to the message body. * Wraps the message body to the number of chars set in the WordWrap property. * You should only do this to plain-text bodies as wrapping HTML tags may break them. * This is called automatically by createBody(), so you don't need to call it yourself. */ public function setWordWrap() { if ($this->WordWrap < 1) { return; } switch ($this->message_type) { case 'alt': case 'alt_inline': case 'alt_attach': case 'alt_inline_attach': $this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap); break; default: $this->Body = $this->wrapText($this->Body, $this->WordWrap); break; } } /** * Assemble message headers. * * @return string The assembled headers */ public function createHeader() { $result = ''; $result .= $this->headerLine('Date', '' === $this->MessageDate ? self::rfcDate() : $this->MessageDate); //The To header is created automatically by mail(), so needs to be omitted here if ('mail' !== $this->Mailer) { if ($this->SingleTo) { foreach ($this->to as $toaddr) { $this->SingleToArray[] = $this->addrFormat($toaddr); } } elseif (count($this->to) > 0) { $result .= $this->addrAppend('To', $this->to); } elseif (count($this->cc) === 0) { $result .= $this->headerLine('To', 'undisclosed-recipients:;'); } } $result .= $this->addrAppend('From', [[trim($this->From), $this->FromName]]); //sendmail and mail() extract Cc from the header before sending if (count($this->cc) > 0) { $result .= $this->addrAppend('Cc', $this->cc); } //sendmail and mail() extract Bcc from the header before sending if ( ( 'sendmail' === $this->Mailer || 'qmail' === $this->Mailer || 'mail' === $this->Mailer ) && count($this->bcc) > 0 ) { $result .= $this->addrAppend('Bcc', $this->bcc); } if (count($this->ReplyTo) > 0) { $result .= $this->addrAppend('Reply-To', $this->ReplyTo); } //mail() sets the subject itself if ('mail' !== $this->Mailer) { $result .= $this->headerLine('Subject', $this->encodeHeader($this->secureHeader($this->Subject))); } //Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4 //https://tools.ietf.org/html/rfc5322#section-3.6.4 if ('' !== $this->MessageID && preg_match('/^<.*@.*>$/', $this->MessageID)) { $this->lastMessageID = $this->MessageID; } else { $this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname()); } $result .= $this->headerLine('Message-ID', $this->lastMessageID); if (null !== $this->Priority) { $result .= $this->headerLine('X-Priority', $this->Priority); } if ('' === $this->XMailer) { $result .= $this->headerLine( 'X-Mailer', 'PHPMailer ' . self::VERSION . ' (https://github.com/PHPMailer/PHPMailer)' ); } else { $myXmailer = trim($this->XMailer); if ($myXmailer) { $result .= $this->headerLine('X-Mailer', $myXmailer); } } if ('' !== $this->ConfirmReadingTo) { $result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>'); } //Add custom headers foreach ($this->CustomHeader as $header) { $result .= $this->headerLine( trim($header[0]), $this->encodeHeader(trim($header[1])) ); } if (!$this->sign_key_file) { $result .= $this->headerLine('MIME-Version', '1.0'); $result .= $this->getMailMIME(); } return $result; } /** * Get the message MIME type headers. * * @return string */ public function getMailMIME() { $result = ''; $ismultipart = true; switch ($this->message_type) { case 'inline': $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"'); break; case 'attach': case 'inline_attach': case 'alt_attach': case 'alt_inline_attach': $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_MIXED . ';'); $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"'); break; case 'alt': case 'alt_inline': $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';'); $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"'); break; default: //Catches case 'plain': and case '': $result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet); $ismultipart = false; break; } //RFC1341 part 5 says 7bit is assumed if not specified if (static::ENCODING_7BIT !== $this->Encoding) { //RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE if ($ismultipart) { if (static::ENCODING_8BIT === $this->Encoding) { $result .= $this->headerLine('Content-Transfer-Encoding', static::ENCODING_8BIT); } //The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible } else { $result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding); } } return $result; } /** * Returns the whole MIME message. * Includes complete headers and body. * Only valid post preSend(). * * @see PHPMailer::preSend() * * @return string */ public function getSentMIMEMessage() { return static::stripTrailingWSP($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->uniqueid = $this->generateId(); $this->boundary[1] = 'b1_' . $this->uniqueid; $this->boundary[2] = 'b2_' . $this->uniqueid; $this->boundary[3] = 'b3_' . $this->uniqueid; if ($this->sign_key_file) { $body .= $this->getMailMIME() . static::$LE; } $this->setWordWrap(); $bodyEncoding = $this->Encoding; $bodyCharSet = $this->CharSet; //Can we do a 7-bit downgrade? if (static::ENCODING_8BIT === $bodyEncoding && !$this->has8bitChars($this->Body)) { $bodyEncoding = static::ENCODING_7BIT; //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit $bodyCharSet = static::CHARSET_ASCII; } //If lines are too long, and we're not already using an encoding that will shorten them, //change to quoted-printable transfer encoding for the body part only if (static::ENCODING_BASE64 !== $this->Encoding && static::hasLineLongerThanMax($this->Body)) { $bodyEncoding = static::ENCODING_QUOTED_PRINTABLE; } $altBodyEncoding = $this->Encoding; $altBodyCharSet = $this->CharSet; //Can we do a 7-bit downgrade? if (static::ENCODING_8BIT === $altBodyEncoding && !$this->has8bitChars($this->AltBody)) { $altBodyEncoding = static::ENCODING_7BIT; //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit $altBodyCharSet = static::CHARSET_ASCII; } //If lines are too long, and we're not already using an encoding that will shorten them, //change to quoted-printable transfer encoding for the alt body part only if (static::ENCODING_BASE64 !== $altBodyEncoding && static::hasLineLongerThanMax($this->AltBody)) { $altBodyEncoding = static::ENCODING_QUOTED_PRINTABLE; } //Use this as a preamble in all multipart message types $mimepre = 'This is a multi-part message in MIME format.' . static::$LE . static::$LE; switch ($this->message_type) { case 'inline': $body .= $mimepre; $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; $body .= $this->attachAll('inline', $this->boundary[1]); break; case 'attach': $body .= $mimepre; $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; $body .= $this->attachAll('attachment', $this->boundary[1]); break; case 'inline_attach': $body .= $mimepre; $body .= $this->textLine('--' . $this->boundary[1]); $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); $body .= $this->textLine(' boundary="' . $this->boundary[2] . '";'); $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"'); $body .= static::$LE; $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; $body .= $this->attachAll('inline', $this->boundary[2]); $body .= static::$LE; $body .= $this->attachAll('attachment', $this->boundary[1]); break; case 'alt': $body .= $mimepre; $body .= $this->getBoundary( $this->boundary[1], $altBodyCharSet, static::CONTENT_TYPE_PLAINTEXT, $altBodyEncoding ); $body .= $this->encodeString($this->AltBody, $altBodyEncoding); $body .= static::$LE; $body .= $this->getBoundary( $this->boundary[1], $bodyCharSet, static::CONTENT_TYPE_TEXT_HTML, $bodyEncoding ); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; if (!empty($this->Ical)) { $method = static::ICAL_METHOD_REQUEST; foreach (static::$IcalMethods as $imethod) { if (stripos($this->Ical, 'METHOD:' . $imethod) !== false) { $method = $imethod; break; } } $body .= $this->getBoundary( $this->boundary[1], '', static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method, '' ); $body .= $this->encodeString($this->Ical, $this->Encoding); $body .= static::$LE; } $body .= $this->endBoundary($this->boundary[1]); break; case 'alt_inline': $body .= $mimepre; $body .= $this->getBoundary( $this->boundary[1], $altBodyCharSet, static::CONTENT_TYPE_PLAINTEXT, $altBodyEncoding ); $body .= $this->encodeString($this->AltBody, $altBodyEncoding); $body .= static::$LE; $body .= $this->textLine('--' . $this->boundary[1]); $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); $body .= $this->textLine(' boundary="' . $this->boundary[2] . '";'); $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"'); $body .= static::$LE; $body .= $this->getBoundary( $this->boundary[2], $bodyCharSet, static::CONTENT_TYPE_TEXT_HTML, $bodyEncoding ); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; $body .= $this->attachAll('inline', $this->boundary[2]); $body .= static::$LE; $body .= $this->endBoundary($this->boundary[1]); break; case 'alt_attach': $body .= $mimepre; $body .= $this->textLine('--' . $this->boundary[1]); $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';'); $body .= $this->textLine(' boundary="' . $this->boundary[2] . '"'); $body .= static::$LE; $body .= $this->getBoundary( $this->boundary[2], $altBodyCharSet, static::CONTENT_TYPE_PLAINTEXT, $altBodyEncoding ); $body .= $this->encodeString($this->AltBody, $altBodyEncoding); $body .= static::$LE; $body .= $this->getBoundary( $this->boundary[2], $bodyCharSet, static::CONTENT_TYPE_TEXT_HTML, $bodyEncoding ); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; if (!empty($this->Ical)) { $method = static::ICAL_METHOD_REQUEST; foreach (static::$IcalMethods as $imethod) { if (stripos($this->Ical, 'METHOD:' . $imethod) !== false) { $method = $imethod; break; } } $body .= $this->getBoundary( $this->boundary[2], '', static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method, '' ); $body .= $this->encodeString($this->Ical, $this->Encoding); } $body .= $this->endBoundary($this->boundary[2]); $body .= static::$LE; $body .= $this->attachAll('attachment', $this->boundary[1]); break; case 'alt_inline_attach': $body .= $mimepre; $body .= $this->textLine('--' . $this->boundary[1]); $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';'); $body .= $this->textLine(' boundary="' . $this->boundary[2] . '"'); $body .= static::$LE; $body .= $this->getBoundary( $this->boundary[2], $altBodyCharSet, static::CONTENT_TYPE_PLAINTEXT, $altBodyEncoding ); $body .= $this->encodeString($this->AltBody, $altBodyEncoding); $body .= static::$LE; $body .= $this->textLine('--' . $this->boundary[2]); $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); $body .= $this->textLine(' boundary="' . $this->boundary[3] . '";'); $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"'); $body .= static::$LE; $body .= $this->getBoundary( $this->boundary[3], $bodyCharSet, static::CONTENT_TYPE_TEXT_HTML, $bodyEncoding ); $body .= $this->encodeString($this->Body, $bodyEncoding); $body .= static::$LE; $body .= $this->attachAll('inline', $this->boundary[3]); $body .= static::$LE; $body .= $this->endBoundary($this->boundary[2]); $body .= static::$LE; $body .= $this->attachAll('attachment', $this->boundary[1]); break; default: //Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types //Reset the `Encoding` property in case we changed it for line length reasons $this->Encoding = $bodyEncoding; $body .= $this->encodeString($this->Body, $this->Encoding); break; } if ($this->isError()) { $body = ''; if ($this->exceptions) { throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL); } } elseif ($this->sign_key_file) { try { if (!defined('PKCS7_TEXT')) { throw new Exception($this->lang('extension_missing') . 'openssl'); } $file = tempnam(sys_get_temp_dir(), 'srcsign'); $signed = tempnam(sys_get_temp_dir(), 'mailsign'); file_put_contents($file, $body); //Workaround for PHP bug https://bugs.php.net/bug.php?id=69197 if (empty($this->sign_extracerts_file)) { $sign = @openssl_pkcs7_sign( $file, $signed, 'file://' . realpath($this->sign_cert_file), ['file://' . realpath($this->sign_key_file), $this->sign_key_pass], [] ); } else { $sign = @openssl_pkcs7_sign( $file, $signed, 'file://' . realpath($this->sign_cert_file), ['file://' . realpath($this->sign_key_file), $this->sign_key_pass], [], PKCS7_DETACHED, $this->sign_extracerts_file ); } @unlink($file); if ($sign) { $body = file_get_contents($signed); @unlink($signed); //The message returned by openssl contains both headers and body, so need to split them up $parts = explode("\n\n", $body, 2); $this->MIMEHeader .= $parts[0] . static::$LE . static::$LE; $body = $parts[1]; } else { @unlink($signed); throw new Exception($this->lang('signing') . openssl_error_string()); } } catch (Exception $exc) { $body = ''; if ($this->exceptions) { throw $exc; } } } return $body; } /** * Return the start of a message boundary. * * @param string $boundary * @param string $charSet * @param string $contentType * @param string $encoding * * @return string */ protected function getBoundary($boundary, $charSet, $contentType, $encoding) { $result = ''; if ('' === $charSet) { $charSet = $this->CharSet; } if ('' === $contentType) { $contentType = $this->ContentType; } if ('' === $encoding) { $encoding = $this->Encoding; } $result .= $this->textLine('--' . $boundary); $result .= sprintf('Content-Type: %s; charset=%s', $contentType, $charSet); $result .= static::$LE; //RFC1341 part 5 says 7bit is assumed if not specified if (static::ENCODING_7BIT !== $encoding) { $result .= $this->headerLine('Content-Transfer-Encoding', $encoding); } $result .= static::$LE; return $result; } /** * Return the end of a message boundary. * * @param string $boundary * * @return string */ protected function endBoundary($boundary) { return static::$LE . '--' . $boundary . '--' . static::$LE; } /** * Set the message type. * PHPMailer only supports some preset message types, not arbitrary MIME structures. */ protected function setMessageType() { $type = []; if ($this->alternativeExists()) { $type[] = 'alt'; } if ($this->inlineImageExists()) { $type[] = 'inline'; } if ($this->attachmentExists()) { $type[] = 'attach'; } $this->message_type = implode('_', $type); if ('' === $this->message_type) { //The 'plain' message_type refers to the message having a single body element, not that it is plain-text $this->message_type = 'plain'; } } /** * Format a header line. * * @param string $name * @param string|int $value * * @return string */ public function headerLine($name, $value) { return $name . ': ' . $value . static::$LE; } /** * Return a formatted mail line. * * @param string $value * * @return string */ public function textLine($value) { return $value . static::$LE; } /** * Add an attachment from a path on the filesystem. * Never use a user-supplied path to a file! * Returns false if the file could not be found or read. * Explicitly *does not* support passing URLs; PHPMailer is not an HTTP client. * If you need to do that, fetch the resource yourself and pass it in via a local file or string. * * @param string $path Path to the attachment * @param string $name Overrides the attachment name * @param string $encoding File encoding (see $Encoding) * @param string $type MIME type, e.g. `image/jpeg`; determined automatically from $path if not specified * @param string $disposition Disposition to use * * @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 ("` =??[QB]??=`"). $overhead = 8 + strlen($charset); if ('mail' === $this->Mailer) { $maxlen = static::MAIL_MAX_LINE_LENGTH - $overhead; } else { $maxlen = static::MAX_LINE_LENGTH - $overhead; } //Select the encoding that produces the shortest output and/or prevents corruption. if ($matchcount > strlen($str) / 3) { //More than 1/3 of the content needs encoding, use B-encode. $encoding = 'B'; } elseif ($matchcount > 0) { //Less than 1/3 of the content needs encoding, use Q-encode. $encoding = 'Q'; } elseif (strlen($str) > $maxlen) { //No encoding needed, but value exceeds max line length, use Q-encode to prevent corruption. $encoding = 'Q'; } else { //No reformatting needed $encoding = false; } switch ($encoding) { case 'B': if ($this->hasMultiBytes($str)) { //Use a custom function which correctly encodes and wraps long //multibyte strings without breaking lines within a character $encoded = $this->base64EncodeWrapMB($str, "\n"); } else { $encoded = base64_encode($str); $maxlen -= $maxlen % 4; $encoded = trim(chunk_split($encoded, $maxlen, "\n")); } $encoded = preg_replace('/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded); break; case 'Q': $encoded = $this->encodeQ($str, $position); $encoded = $this->wrapText($encoded, $maxlen, true); $encoded = str_replace('=' . static::$LE, "\n", trim($encoded)); $encoded = preg_replace('/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded); break; default: return $str; } return trim(static::normalizeBreaks($encoded)); } /** * Check if a string contains multi-byte characters. * * @param string $str multi-byte text to wrap encode * * @return bool */ public function hasMultiBytes($str) { if (function_exists('mb_strlen')) { return strlen($str) > mb_strlen($str, $this->CharSet); } //Assume no multibytes (we can't handle without mbstring functions anyway) return false; } /** * Does a string contain any 8-bit chars (in any charset)? * * @param string $text * * @return bool */ public function has8bitChars($text) { return (bool) preg_match('/[\x80-\xFF]/', $text); } /** * Encode and wrap long multibyte strings for mail headers * without breaking lines within a character. * Adapted from a function by paravoid. * * @see http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283 * * @param string $str multi-byte text to wrap encode * @param string $linebreak string to use as linefeed/end-of-line * * @return string */ public function base64EncodeWrapMB($str, $linebreak = null) { $start = '=?' . $this->CharSet . '?B?'; $end = '?='; $encoded = ''; if (null === $linebreak) { $linebreak = static::$LE; } $mb_length = mb_strlen($str, $this->CharSet); //Each line must have length <= 75, including $start and $end $length = 75 - strlen($start) - strlen($end); //Average multi-byte ratio $ratio = $mb_length / strlen($str); //Base64 has a 4:3 ratio $avgLength = floor($length * $ratio * .75); $offset = 0; for ($i = 0; $i < $mb_length; $i += $offset) { $lookBack = 0; do { $offset = $avgLength - $lookBack; $chunk = mb_substr($str, $i, $offset, $this->CharSet); $chunk = base64_encode($chunk); ++$lookBack; } while (strlen($chunk) > $length); $encoded .= $chunk . $linebreak; } //Chomp the last linefeed return substr($encoded, 0, -strlen($linebreak)); } /** * Encode a string in quoted-printable format. * According to RFC2045 section 6.7. * * @param string $string The text to encode * * @return string */ public function encodeQP($string) { return static::normalizeBreaks(quoted_printable_encode($string)); } /** * Encode a string using Q encoding. * * @see http://tools.ietf.org/html/rfc2047#section-4.2 * * @param string $str the text to encode * @param string $position Where the text is going to be used, see the RFC for what that means * * @return string */ public function encodeQ($str, $position = 'text') { //There should not be any EOL in the string $pattern = ''; $encoded = str_replace(["\r", "\n"], '', $str); switch (strtolower($position)) { case 'phrase': //RFC 2047 section 5.3 $pattern = '^A-Za-z0-9!*+\/ -'; break; /* * RFC 2047 section 5.2. * Build $pattern without including delimiters and [] */ /* @noinspection PhpMissingBreakStatementInspection */ case 'comment': $pattern = '\(\)"'; /* Intentional fall through */ case 'text': default: //RFC 2047 section 5.1 //Replace every high ascii, control, =, ? and _ characters $pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern; break; } $matches = []; if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) { //If the string contains an '=', make sure it's the first thing we replace //so as to avoid double-encoding $eqkey = array_search('=', $matches[0], true); if (false !== $eqkey) { unset($matches[0][$eqkey]); array_unshift($matches[0], '='); } foreach (array_unique($matches[0]) as $char) { $encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded); } } //Replace spaces with _ (more readable than =20) //RFC 2047 section 4.2(2) return str_replace(' ', '_', $encoded); } /** * Add a string or binary attachment (non-filesystem). * This method can be used to attach ascii or binary data, * such as a BLOB record from a database. * * @param string $string String attachment data * @param string $filename Name of the attachment * @param string $encoding File encoding (see $Encoding) * @param string $type File extension (MIME) type * @param string $disposition Disposition to use * * @throws Exception * * @return bool True on successfully adding an attachment */ public function addStringAttachment( $string, $filename, $encoding = self::ENCODING_BASE64, $type = '', $disposition = 'attachment' ) { try { //If a MIME type is not specified, try to work it out from the file name if ('' === $type) { $type = static::filenameToType($filename); } if (!$this->validateEncoding($encoding)) { throw new Exception($this->lang('encoding') . $encoding); } //Append to $attachment array $this->attachment[] = [ 0 => $string, 1 => $filename, 2 => static::mb_pathinfo($filename, PATHINFO_BASENAME), 3 => $encoding, 4 => $type, 5 => true, //isStringAttachment 6 => $disposition, 7 => 0, ]; } catch (Exception $exc) { $this->setError($exc->getMessage()); $this->edebug($exc->getMessage()); if ($this->exceptions) { throw $exc; } return false; } return true; } /** * Add an embedded (inline) attachment from a file. * This can include images, sounds, and just about any other document type. * These differ from 'regular' attachments in that they are intended to be * displayed inline with the message, not just attached for download. * This is used in HTML messages that embed the images * the HTML refers to using the $cid value. * Never use a user-supplied path to a file! * * @param string $path Path to the attachment * @param string $cid Content ID of the attachment; Use this to reference * the content when using an embedded image in HTML * @param string $name Overrides the attachment name * @param string $encoding File encoding (see $Encoding) * @param string $type File MIME type * @param string $disposition Disposition to use * * @throws Exception * * @return bool True on successfully adding an attachment */ public function addEmbeddedImage( $path, $cid, $name = '', $encoding = self::ENCODING_BASE64, $type = '', $disposition = 'inline' ) { try { if (!static::fileIsAccessible($path)) { throw new Exception($this->lang('file_access') . $path, self::STOP_CONTINUE); } //If a MIME type is not specified, try to work it out from the file name if ('' === $type) { $type = static::filenameToType($path); } if (!$this->validateEncoding($encoding)) { throw new Exception($this->lang('encoding') . $encoding); } $filename = (string) static::mb_pathinfo($path, PATHINFO_BASENAME); if ('' === $name) { $name = $filename; } //Append to $attachment array $this->attachment[] = [ 0 => $path, 1 => $filename, 2 => $name, 3 => $encoding, 4 => $type, 5 => false, //isStringAttachment 6 => $disposition, 7 => $cid, ]; } catch (Exception $exc) { $this->setError($exc->getMessage()); $this->edebug($exc->getMessage()); if ($this->exceptions) { throw $exc; } return false; } return true; } /** * Add an embedded stringified attachment. * This can include images, sounds, and just about any other document type. * If your filename doesn't contain an extension, be sure to set the $type to an appropriate MIME type. * * @param string $string The attachment binary data * @param string $cid Content ID of the attachment; Use this to reference * the content when using an embedded image in HTML * @param string $name A filename for the attachment. If this contains an extension, * PHPMailer will attempt to set a MIME type for the attachment. * For example 'file.jpg' would get an 'image/jpeg' MIME type. * @param string $encoding File encoding (see $Encoding), defaults to 'base64' * @param string $type MIME type - will be used in preference to any automatically derived type * @param string $disposition Disposition to use * * @throws Exception * * @return bool True on successfully adding an attachment */ public function addStringEmbeddedImage( $string, $cid, $name = '', $encoding = self::ENCODING_BASE64, $type = '', $disposition = 'inline' ) { try { //If a MIME type is not specified, try to work it out from the name if ('' === $type && !empty($name)) { $type = static::filenameToType($name); } if (!$this->validateEncoding($encoding)) { throw new Exception($this->lang('encoding') . $encoding); } //Append to $attachment array $this->attachment[] = [ 0 => $string, 1 => $name, 2 => $name, 3 => $encoding, 4 => $type, 5 => true, //isStringAttachment 6 => $disposition, 7 => $cid, ]; } catch (Exception $exc) { $this->setError($exc->getMessage()); $this->edebug($exc->getMessage()); if ($this->exceptions) { throw $exc; } return false; } return true; } /** * Validate encodings. * * @param string $encoding * * @return bool */ protected function validateEncoding($encoding) { return in_array( $encoding, [ self::ENCODING_7BIT, self::ENCODING_QUOTED_PRINTABLE, self::ENCODING_BASE64, self::ENCODING_8BIT, self::ENCODING_BINARY, ], true ); } /** * Check if an embedded attachment is present with this cid. * * @param string $cid * * @return bool */ protected function cidExists($cid) { foreach ($this->attachment as $attachment) { if ('inline' === $attachment[6] && $cid === $attachment[7]) { return true; } } return false; } /** * Check if an inline attachment is present. * * @return bool */ public function inlineImageExists() { foreach ($this->attachment as $attachment) { if ('inline' === $attachment[6]) { return true; } } return false; } /** * Check if an attachment (non-inline) is present. * * @return bool */ public function attachmentExists() { foreach ($this->attachment as $attachment) { if ('attachment' === $attachment[6]) { return true; } } return false; } /** * Check if this message has an alternative body set. * * @return bool */ public function alternativeExists() { return !empty($this->AltBody); } /** * Clear queued addresses of given kind. * * @param string $kind 'to', 'cc', or 'bcc' */ public function clearQueuedAddresses($kind) { $this->RecipientsQueue = array_filter( $this->RecipientsQueue, static function ($params) use ($kind) { return $params[0] !== $kind; } ); } /** * Clear all To recipients. */ public function clearAddresses() { foreach ($this->to as $to) { unset($this->all_recipients[strtolower($to[0])]); } $this->to = []; $this->clearQueuedAddresses('to'); } /** * Clear all CC recipients. */ public function clearCCs() { foreach ($this->cc as $cc) { unset($this->all_recipients[strtolower($cc[0])]); } $this->cc = []; $this->clearQueuedAddresses('cc'); } /** * Clear all BCC recipients. */ public function clearBCCs() { foreach ($this->bcc as $bcc) { unset($this->all_recipients[strtolower($bcc[0])]); } $this->bcc = []; $this->clearQueuedAddresses('bcc'); } /** * Clear all ReplyTo recipients. */ public function clearReplyTos() { $this->ReplyTo = []; $this->ReplyToQueue = []; } /** * Clear all recipient types. */ public function clearAllRecipients() { $this->to = []; $this->cc = []; $this->bcc = []; $this->all_recipients = []; $this->RecipientsQueue = []; } /** * Clear all filesystem, string, and binary attachments. */ public function clearAttachments() { $this->attachment = []; } /** * Clear all custom headers. */ public function clearCustomHeaders() { $this->CustomHeader = []; } /** * Add an error message to the error container. * * @param string $msg */ protected function setError($msg) { ++$this->error_count; if ('smtp' === $this->Mailer && null !== $this->smtp) { $lasterror = $this->smtp->getError(); if (!empty($lasterror['error'])) { $msg .= $this->lang('smtp_error') . $lasterror['error']; if (!empty($lasterror['detail'])) { $msg .= ' Detail: ' . $lasterror['detail']; } if (!empty($lasterror['smtp_code'])) { $msg .= ' SMTP code: ' . $lasterror['smtp_code']; } if (!empty($lasterror['smtp_code_ex'])) { $msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex']; } } } $this->ErrorInfo = $msg; } /** * Return an RFC 822 formatted date. * * @return string */ public static function rfcDate() { //Set the time zone to whatever the default is to avoid 500 errors //Will default to UTC if it's not set properly in php.ini date_default_timezone_set(@date_default_timezone_get()); return date('D, j M Y H:i:s O'); } /** * Get the server hostname. * Returns 'localhost.localdomain' if unknown. * * @return string */ protected function serverHostname() { $result = ''; if (!empty($this->Hostname)) { $result = $this->Hostname; } elseif (isset($_SERVER) && array_key_exists('SERVER_NAME', $_SERVER)) { $result = $_SERVER['SERVER_NAME']; } elseif (function_exists('gethostname') && gethostname() !== false) { $result = gethostname(); } elseif (php_uname('n') !== false) { $result = php_uname('n'); } if (!static::isValidHost($result)) { return 'localhost.localdomain'; } return $result; } /** * Validate whether a string contains a valid value to use as a hostname or IP address. * IPv6 addresses must include [], e.g. `[::1]`, not just `::1`. * * @param string $host The host name or IP address to check * * @return bool */ public static function isValidHost($host) { //Simple syntax limits if ( empty($host) || !is_string($host) || strlen($host) > 256 || !preg_match('/^([a-zA-Z\d.-]*|\[[a-fA-F\d:]+])$/', $host) ) { return false; } //Looks like a bracketed IPv6 address if (strlen($host) > 2 && substr($host, 0, 1) === '[' && substr($host, -1, 1) === ']') { return filter_var(substr($host, 1, -1), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== false; } //If removing all the dots results in a numeric string, it must be an IPv4 address. //Need to check this first because otherwise things like `999.0.0.0` are considered valid host names if (is_numeric(str_replace('.', '', $host))) { //Is it a valid IPv4 address? return filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false; } if (filter_var('http://' . $host, FILTER_VALIDATE_URL) !== false) { //Is it a syntactically valid hostname? return true; } return false; } /** * Get an error message in the current language. * * @param string $key * * @return string */ protected function lang($key) { if (count($this->language) < 1) { $this->setLanguage(); //Set the default language } if (array_key_exists($key, $this->language)) { if ('smtp_connect_failed' === $key) { //Include a link to troubleshooting docs on SMTP connection failure. //This is by far the biggest cause of support questions //but it's usually not PHPMailer's fault. return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting'; } return $this->language[$key]; } //Return the key as a fallback return $key; } /** * Check if an error occurred. * * @return bool True if an error did occur */ public function isError() { return $this->error_count > 0; } /** * Add a custom header. * $name value can be overloaded to contain * both header name and value (name:value). * * @param string $name Custom header name * @param string|null $value Header value * * @throws Exception */ public function addCustomHeader($name, $value = null) { if (null === $value && strpos($name, ':') !== false) { //Value passed in as name:value list($name, $value) = explode(':', $name, 2); } $name = trim($name); $value = trim($value); //Ensure name is not empty, and that neither name nor value contain line breaks if (empty($name) || strpbrk($name . $value, "\r\n") !== false) { if ($this->exceptions) { throw new Exception('Invalid header name or value'); } return false; } $this->CustomHeader[] = [$name, $value]; return true; } /** * Returns all custom headers. * * @return array */ public function getCustomHeaders() { return $this->CustomHeader; } /** * Create a message body from an HTML string. * Automatically inlines images and creates a plain-text version by converting the HTML, * overwriting any existing values in Body and AltBody. * Do not source $message content from user input! * $basedir is prepended when handling relative URLs, e.g. 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 = '', $advanced = false) { preg_match_all('/(? 1 && '/' !== substr($basedir, -1)) { //Ensure $basedir has a trailing / $basedir .= '/'; } foreach ($images[2] as $imgindex => $url) { //Convert data URIs into embedded images //e.g. "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" $match = []; if (preg_match('#^data:(image/(?:jpe?g|gif|png));?(base64)?,(.+)#', $url, $match)) { if (count($match) === 4 && static::ENCODING_BASE64 === $match[2]) { $data = base64_decode($match[3]); } elseif ('' === $match[2]) { $data = rawurldecode($match[3]); } else { //Not recognised so leave it alone continue; } //Hash the decoded data, not the URL, so that the same data-URI image used in multiple places //will only be embedded once, even if it used a different encoding $cid = substr(hash('sha256', $data), 0, 32) . '@phpmailer.0'; //RFC2392 S 2 if (!$this->cidExists($cid)) { $this->addStringEmbeddedImage( $data, $cid, 'embed' . $imgindex, static::ENCODING_BASE64, $match[1] ); } $message = str_replace( $images[0][$imgindex], $images[1][$imgindex] . '="cid:' . $cid . '"', $message ); continue; } if ( //Only process relative URLs if a basedir is provided (i.e. no absolute local paths) !empty($basedir) //Ignore URLs containing parent dir traversal (..) && (strpos($url, '..') === false) //Do not change urls that are already inline images && 0 !== strpos($url, 'cid:') //Do not change absolute URLs, including anonymous protocol && !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url) ) { $filename = static::mb_pathinfo($url, PATHINFO_BASENAME); $directory = dirname($url); if ('.' === $directory) { $directory = ''; } //RFC2392 S 2 $cid = substr(hash('sha256', $url), 0, 32) . '@phpmailer.0'; if (strlen($basedir) > 1 && '/' !== substr($basedir, -1)) { $basedir .= '/'; } if (strlen($directory) > 1 && '/' !== substr($directory, -1)) { $directory .= '/'; } if ( $this->addEmbeddedImage( $basedir . $directory . $filename, $cid, $filename, static::ENCODING_BASE64, static::_mime_types((string) static::mb_pathinfo($filename, PATHINFO_EXTENSION)) ) ) { $message = preg_replace( '/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui', $images[1][$imgindex] . '="cid:' . $cid . '"', $message ); } } } } $this->isHTML(); //Convert all message body line breaks to LE, makes quoted-printable encoding work much better $this->Body = static::normalizeBreaks($message); $this->AltBody = static::normalizeBreaks($this->html2text($message, $advanced)); if (!$this->alternativeExists()) { $this->AltBody = 'This is an HTML-only message. To view it, activate HTML in your email application.' . static::$LE; } return $this->Body; } /** * Convert an HTML string into plain text. * This is used by msgHTML(). * Note - older versions of this function used a bundled advanced converter * which was removed for license reasons in #232. * Example usage: * * ```php * //Use default conversion * $plain = $mail->html2text($html); * //Use your own custom converter * $plain = $mail->html2text($html, function($html) { * $converter = new MyHtml2text($html); * return $converter->get_text(); * }); * ``` * * @param string $html The HTML text to convert * @param bool|callable $advanced Any boolean value to use the internal converter, * or provide your own callable for custom conversion * * @return string */ public function html2text($html, $advanced = false) { if (is_callable($advanced)) { return call_user_func($advanced, $html); } return html_entity_decode( trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))), ENT_QUOTES, $this->CharSet ); } /** * Get the MIME type for a file extension. * * @param string $ext File extension * * @return string MIME type of file */ public static function _mime_types($ext = '') { $mimes = [ 'xl' => 'application/excel', 'js' => 'application/javascript', 'hqx' => 'application/mac-binhex40', 'cpt' => 'application/mac-compactpro', 'bin' => 'application/macbinary', 'doc' => 'application/msword', 'word' => 'application/msword', 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template', 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template', 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow', 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', 'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide', 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template', 'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12', 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12', 'class' => 'application/octet-stream', 'dll' => 'application/octet-stream', 'dms' => 'application/octet-stream', 'exe' => 'application/octet-stream', 'lha' => 'application/octet-stream', 'lzh' => 'application/octet-stream', 'psd' => 'application/octet-stream', 'sea' => 'application/octet-stream', 'so' => 'application/octet-stream', 'oda' => 'application/oda', 'pdf' => 'application/pdf', 'ai' => 'application/postscript', 'eps' => 'application/postscript', 'ps' => 'application/postscript', 'smi' => 'application/smil', 'smil' => 'application/smil', 'mif' => 'application/vnd.mif', 'xls' => 'application/vnd.ms-excel', 'ppt' => 'application/vnd.ms-powerpoint', 'wbxml' => 'application/vnd.wap.wbxml', 'wmlc' => 'application/vnd.wap.wmlc', 'dcr' => 'application/x-director', 'dir' => 'application/x-director', 'dxr' => 'application/x-director', 'dvi' => 'application/x-dvi', 'gtar' => 'application/x-gtar', 'php3' => 'application/x-httpd-php', 'php4' => 'application/x-httpd-php', 'php' => 'application/x-httpd-php', 'phtml' => 'application/x-httpd-php', 'phps' => 'application/x-httpd-php-source', 'swf' => 'application/x-shockwave-flash', 'sit' => 'application/x-stuffit', 'tar' => 'application/x-tar', 'tgz' => 'application/x-tar', 'xht' => 'application/xhtml+xml', 'xhtml' => 'application/xhtml+xml', 'zip' => 'application/zip', 'mid' => 'audio/midi', 'midi' => 'audio/midi', 'mp2' => 'audio/mpeg', 'mp3' => 'audio/mpeg', 'm4a' => 'audio/mp4', 'mpga' => 'audio/mpeg', 'aif' => 'audio/x-aiff', 'aifc' => 'audio/x-aiff', 'aiff' => 'audio/x-aiff', 'ram' => 'audio/x-pn-realaudio', 'rm' => 'audio/x-pn-realaudio', 'rpm' => 'audio/x-pn-realaudio-plugin', 'ra' => 'audio/x-realaudio', 'wav' => 'audio/x-wav', 'mka' => 'audio/x-matroska', 'bmp' => 'image/bmp', 'gif' => 'image/gif', 'jpeg' => 'image/jpeg', 'jpe' => 'image/jpeg', 'jpg' => 'image/jpeg', 'png' => 'image/png', 'tiff' => 'image/tiff', 'tif' => 'image/tiff', 'webp' => 'image/webp', 'avif' => 'image/avif', 'heif' => 'image/heif', 'heifs' => 'image/heif-sequence', 'heic' => 'image/heic', 'heics' => 'image/heic-sequence', 'eml' => 'message/rfc822', 'css' => 'text/css', 'html' => 'text/html', 'htm' => 'text/html', 'shtml' => 'text/html', 'log' => 'text/plain', 'text' => 'text/plain', 'txt' => 'text/plain', 'rtx' => 'text/richtext', 'rtf' => 'text/rtf', 'vcf' => 'text/vcard', 'vcard' => 'text/vcard', 'ics' => 'text/calendar', 'xml' => 'text/xml', 'xsl' => 'text/xml', 'wmv' => 'video/x-ms-wmv', 'mpeg' => 'video/mpeg', 'mpe' => 'video/mpeg', 'mpg' => 'video/mpeg', 'mp4' => 'video/mp4', 'm4v' => 'video/mp4', 'mov' => 'video/quicktime', 'qt' => 'video/quicktime', 'rv' => 'video/vnd.rn-realvideo', 'avi' => 'video/x-msvideo', 'movie' => 'video/x-sgi-movie', 'webm' => 'video/webm', 'mkv' => 'video/x-matroska', ]; $ext = strtolower($ext); if (array_key_exists($ext, $mimes)) { return $mimes[$ext]; } return 'application/octet-stream'; } /** * Map a file name to a MIME type. * Defaults to 'application/octet-stream', i.e.. arbitrary binary data. * * @param string $filename A file name or full path, does not need to exist as a file * * @return string */ public static function filenameToType($filename) { //In case the path is a URL, strip any query string before getting extension $qpos = strpos($filename, '?'); if (false !== $qpos) { $filename = substr($filename, 0, $qpos); } $ext = static::mb_pathinfo($filename, PATHINFO_EXTENSION); return static::_mime_types($ext); } /** * Multi-byte-safe pathinfo replacement. * Drop-in replacement for pathinfo(), but multibyte- and cross-platform-safe. * * @see http://www.php.net/manual/en/function.pathinfo.php#107461 * * @param string $path A filename or path, does not need to exist as a file * @param int|string $options Either a PATHINFO_* constant, * or a string name to return only the specified piece * * @return string|array */ public static function mb_pathinfo($path, $options = null) { $ret = ['dirname' => '', 'basename' => '', 'extension' => '', 'filename' => '']; $pathinfo = []; if (preg_match('#^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^.\\\\/]+?)|))[\\\\/.]*$#m', $path, $pathinfo)) { if (array_key_exists(1, $pathinfo)) { $ret['dirname'] = $pathinfo[1]; } if (array_key_exists(2, $pathinfo)) { $ret['basename'] = $pathinfo[2]; } if (array_key_exists(5, $pathinfo)) { $ret['extension'] = $pathinfo[5]; } if (array_key_exists(3, $pathinfo)) { $ret['filename'] = $pathinfo[3]; } } switch ($options) { case PATHINFO_DIRNAME: case 'dirname': return $ret['dirname']; case PATHINFO_BASENAME: case 'basename': return $ret['basename']; case PATHINFO_EXTENSION: case 'extension': return $ret['extension']; case PATHINFO_FILENAME: case 'filename': return $ret['filename']; default: return $ret; } } /** * Set or reset instance properties. * You should avoid this function - it's more verbose, less efficient, more error-prone and * harder to debug than setting properties directly. * Usage Example: * `$mail->set('SMTPSecure', static::ENCRYPTION_STARTTLS);` * is the same as: * `$mail->SMTPSecure = static::ENCRYPTION_STARTTLS;`. * * @param string $name The property name to set * @param mixed $value The value to set the property to * * @return bool */ public function set($name, $value = '') { if (property_exists($this, $name)) { $this->$name = $value; return true; } $this->setError($this->lang('variable_set') . $name); return false; } /** * Strip newlines to prevent header injection. * * @param string $str * * @return string */ public function secureHeader($str) { return trim(str_replace(["\r", "\n"], '', $str)); } /** * Normalize line breaks in a string. * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format. * Defaults to CRLF (for message bodies) and preserves consecutive breaks. * * @param string $text * @param string $breaktype What kind of line break to use; defaults to static::$LE * * @return string */ public static function normalizeBreaks($text, $breaktype = null) { if (null === $breaktype) { $breaktype = static::$LE; } //Normalise to \n $text = str_replace([self::CRLF, "\r"], "\n", $text); //Now convert LE as needed if ("\n" !== $breaktype) { $text = str_replace("\n", $breaktype, $text); } return $text; } /** * Remove trailing breaks from a string. * * @param string $text * * @return string The text to remove breaks from */ public static function stripTrailingWSP($text) { return rtrim($text, " \r\n\t"); } /** * Return the current line break format string. * * @return string */ public static function getLE() { return static::$LE; } /** * Set the line break format string, e.g. "\r\n". * * @param string $le */ protected static function setLE($le) { static::$LE = $le; } /** * Set the public and private key files and password for S/MIME signing. * * @param string $cert_filename * @param string $key_filename * @param string $key_pass Password for private key * @param string $extracerts_filename Optional path to chain certificate */ public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '') { $this->sign_cert_file = $cert_filename; $this->sign_key_file = $key_filename; $this->sign_key_pass = $key_pass; $this->sign_extracerts_file = $extracerts_filename; } /** * Quoted-Printable-encode a DKIM header. * * @param string $txt * * @return string */ public function DKIM_QP($txt) { $line = ''; $len = strlen($txt); for ($i = 0; $i < $len; ++$i) { $ord = ord($txt[$i]); if (((0x21 <= $ord) && ($ord <= 0x3A)) || $ord === 0x3C || ((0x3E <= $ord) && ($ord <= 0x7E))) { $line .= $txt[$i]; } else { $line .= '=' . sprintf('%02X', $ord); } } return $line; } /** * Generate a DKIM signature. * * @param string $signHeader * * @throws Exception * * @return string The DKIM signature value */ public function DKIM_Sign($signHeader) { if (!defined('PKCS7_TEXT')) { if ($this->exceptions) { throw new Exception($this->lang('extension_missing') . 'openssl'); } return ''; } $privKeyStr = !empty($this->DKIM_private_string) ? $this->DKIM_private_string : file_get_contents($this->DKIM_private); if ('' !== $this->DKIM_passphrase) { $privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase); } else { $privKey = openssl_pkey_get_private($privKeyStr); } if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) { if (\PHP_MAJOR_VERSION < 8) { openssl_pkey_free($privKey); } return base64_encode($signature); } if (\PHP_MAJOR_VERSION < 8) { openssl_pkey_free($privKey); } return ''; } /** * Generate a DKIM canonicalization header. * Uses the 'relaxed' algorithm from RFC6376 section 3.4.2. * Canonicalized headers should *always* use CRLF, regardless of mailer setting. * * @see https://tools.ietf.org/html/rfc6376#section-3.4.2 * * @param string $signHeader Header * * @return string */ public function DKIM_HeaderC($signHeader) { //Normalize breaks to CRLF (regardless of the mailer) $signHeader = static::normalizeBreaks($signHeader, self::CRLF); //Unfold header lines //Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]` //@see https://tools.ietf.org/html/rfc5322#section-2.2 //That means this may break if you do something daft like put vertical tabs in your headers. $signHeader = preg_replace('/\r\n[ \t]+/', ' ', $signHeader); //Break headers out into an array $lines = explode(self::CRLF, $signHeader); foreach ($lines as $key => $line) { //If the header is missing a :, skip it as it's invalid //This is likely to happen because the explode() above will also split //on the trailing LE, leaving an empty line if (strpos($line, ':') === false) { continue; } list($heading, $value) = explode(':', $line, 2); //Lower-case header name $heading = strtolower($heading); //Collapse white space within the value, also convert WSP to space $value = preg_replace('/[ \t]+/', ' ', $value); //RFC6376 is slightly unclear here - it says to delete space at the *end* of each value //But then says to delete space before and after the colon. //Net result is the same as trimming both ends of the value. //By elimination, the same applies to the field name $lines[$key] = trim($heading, " \t") . ':' . trim($value, " \t"); } return implode(self::CRLF, $lines); } /** * Generate a DKIM canonicalization body. * Uses the 'simple' algorithm from RFC6376 section 3.4.3. * Canonicalized bodies should *always* use CRLF, regardless of mailer setting. * * @see https://tools.ietf.org/html/rfc6376#section-3.4.3 * * @param string $body Message Body * * @return string */ public function DKIM_BodyC($body) { if (empty($body)) { return self::CRLF; } //Normalize line endings to CRLF $body = static::normalizeBreaks($body, self::CRLF); //Reduce multiple trailing line breaks to a single one return static::stripTrailingWSP($body) . self::CRLF; } /** * Create the DKIM header and body in a new message header. * * @param string $headers_line Header lines * @param string $subject Subject * @param string $body Body * * @throws Exception * * @return string */ public function DKIM_Add($headers_line, $subject, $body) { $DKIMsignatureType = 'rsa-sha256'; //Signature & hash algorithms $DKIMcanonicalization = 'relaxed/simple'; //Canonicalization methods of header & body $DKIMquery = 'dns/txt'; //Query method $DKIMtime = time(); //Always sign these headers without being asked //Recommended list from https://tools.ietf.org/html/rfc6376#section-5.4.1 $autoSignHeaders = [ 'from', 'to', 'cc', 'date', 'subject', 'reply-to', 'message-id', 'content-type', 'mime-version', 'x-mailer', ]; if (stripos($headers_line, 'Subject') === false) { $headers_line .= 'Subject: ' . $subject . static::$LE; } $headerLines = explode(static::$LE, $headers_line); $currentHeaderLabel = ''; $currentHeaderValue = ''; $parsedHeaders = []; $headerLineIndex = 0; $headerLineCount = count($headerLines); foreach ($headerLines as $headerLine) { $matches = []; if (preg_match('/^([^ \t]*?)(?::[ \t]*)(.*)$/', $headerLine, $matches)) { if ($currentHeaderLabel !== '') { //We were previously in another header; This is the start of a new header, so save the previous one $parsedHeaders[] = ['label' => $currentHeaderLabel, 'value' => $currentHeaderValue]; } $currentHeaderLabel = $matches[1]; $currentHeaderValue = $matches[2]; } elseif (preg_match('/^[ \t]+(.*)$/', $headerLine, $matches)) { //This is a folded continuation of the current header, so unfold it $currentHeaderValue .= ' ' . $matches[1]; } ++$headerLineIndex; if ($headerLineIndex >= $headerLineCount) { //This was the last line, so finish off this header $parsedHeaders[] = ['label' => $currentHeaderLabel, 'value' => $currentHeaderValue]; } } $copiedHeaders = []; $headersToSignKeys = []; $headersToSign = []; foreach ($parsedHeaders as $header) { //Is this header one that must be included in the DKIM signature? if (in_array(strtolower($header['label']), $autoSignHeaders, true)) { $headersToSignKeys[] = $header['label']; $headersToSign[] = $header['label'] . ': ' . $header['value']; if ($this->DKIM_copyHeaderFields) { $copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC str_replace('|', '=7C', $this->DKIM_QP($header['value'])); } continue; } //Is this an extra custom header we've been asked to sign? if (in_array($header['label'], $this->DKIM_extraHeaders, true)) { //Find its value in custom headers foreach ($this->CustomHeader as $customHeader) { if ($customHeader[0] === $header['label']) { $headersToSignKeys[] = $header['label']; $headersToSign[] = $header['label'] . ': ' . $header['value']; if ($this->DKIM_copyHeaderFields) { $copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC str_replace('|', '=7C', $this->DKIM_QP($header['value'])); } //Skip straight to the next header continue 2; } } } } $copiedHeaderFields = ''; if ($this->DKIM_copyHeaderFields && count($copiedHeaders) > 0) { //Assemble a DKIM 'z' tag $copiedHeaderFields = ' z='; $first = true; foreach ($copiedHeaders as $copiedHeader) { if (!$first) { $copiedHeaderFields .= static::$LE . ' |'; } //Fold long values if (strlen($copiedHeader) > self::STD_LINE_LENGTH - 3) { $copiedHeaderFields .= substr( chunk_split($copiedHeader, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS), 0, -strlen(static::$LE . self::FWS) ); } else { $copiedHeaderFields .= $copiedHeader; } $first = false; } $copiedHeaderFields .= ';' . static::$LE; } $headerKeys = ' h=' . implode(':', $headersToSignKeys) . ';' . static::$LE; $headerValues = implode(static::$LE, $headersToSign); $body = $this->DKIM_BodyC($body); //Base64 of packed binary SHA-256 hash of body $DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); $ident = ''; if ('' !== $this->DKIM_identity) { $ident = ' i=' . $this->DKIM_identity . ';' . static::$LE; } //The DKIM-Signature header is included in the signature *except for* the value of the `b` tag //which is appended after calculating the signature //https://tools.ietf.org/html/rfc6376#section-3.5 $dkimSignatureHeader = 'DKIM-Signature: v=1;' . ' d=' . $this->DKIM_domain . ';' . ' s=' . $this->DKIM_selector . ';' . static::$LE . ' a=' . $DKIMsignatureType . ';' . ' q=' . $DKIMquery . ';' . ' t=' . $DKIMtime . ';' . ' c=' . $DKIMcanonicalization . ';' . static::$LE . $headerKeys . $ident . $copiedHeaderFields . ' bh=' . $DKIMb64 . ';' . static::$LE . ' b='; //Canonicalize the set of headers $canonicalizedHeaders = $this->DKIM_HeaderC( $headerValues . static::$LE . $dkimSignatureHeader ); $signature = $this->DKIM_Sign($canonicalizedHeaders); $signature = trim(chunk_split($signature, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS)); return static::normalizeBreaks($dkimSignatureHeader . $signature); } /** * Detect if a string contains a line longer than the maximum line length * allowed by RFC 2822 section 2.1.1. * * @param string $str * * @return bool */ public static function hasLineLongerThanMax($str) { return (bool) preg_match('/^(.{' . (self::MAX_LINE_LENGTH + strlen(static::$LE)) . ',})/m', $str); } /** * If a string contains any "special" characters, double-quote the name, * and escape any double quotes with a backslash. * * @param string $str * * @return string * * @see RFC822 3.4.1 */ public static function quotedString($str) { if (preg_match('/[ ()<>@,;:"\/\[\]?=]/', $str)) { //If the string contains any of these chars, it must be double-quoted //and any double quotes must be escaped with a backslash return '"' . str_replace('"', '\\"', $str) . '"'; } //Return the string untouched, it doesn't need quoting return $str; } /** * Allows for public read access to 'to' property. * Before the send() call, queued addresses (i.e. with IDN) are not yet included. * * @return array */ public function getToAddresses() { return $this->to; } /** * Allows for public read access to 'cc' property. * Before the send() call, queued addresses (i.e. with IDN) are not yet included. * * @return array */ public function getCcAddresses() { return $this->cc; } /** * Allows for public read access to 'bcc' property. * Before the send() call, queued addresses (i.e. with IDN) are not yet included. * * @return array */ public function getBccAddresses() { return $this->bcc; } /** * Allows for public read access to 'ReplyTo' property. * Before the send() call, queued addresses (i.e. with IDN) are not yet included. * * @return array */ public function getReplyToAddresses() { return $this->ReplyTo; } /** * Allows for public read access to 'all_recipients' property. * Before the send() call, queued addresses (i.e. with IDN) are not yet included. * * @return array */ public function getAllRecipientAddresses() { return $this->all_recipients; } /** * Perform a callback. * * @param bool $isSent * @param array $to * @param array $cc * @param array $bcc * @param string $subject * @param string $body * @param string $from * @param array $extra */ protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from, $extra) { if (!empty($this->action_function) && is_callable($this->action_function)) { call_user_func($this->action_function, $isSent, $to, $cc, $bcc, $subject, $body, $from, $extra); } } /** * Get the OAuth instance. * * @return OAuth */ public function getOAuth() { return $this->oauth; } /** * Set an OAuth instance. */ public function setOAuth(OAuth $oauth) { $this->oauth = $oauth; } } --- PHPMailer | 4933 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 4933 insertions(+) create mode 100644 PHPMailer diff --git a/PHPMailer b/PHPMailer new file mode 100644 index 000000000..1a65cfd8d --- /dev/null +++ b/PHPMailer @@ -0,0 +1,4933 @@ + + * @author Jim Jagielski (jimjag) + * @author Andy Prevost (codeworxtech) + * @author Brent R. Matzelle (original founder) + * @copyright 2012 - 2020 Marcus Bointon + * @copyright 2010 - 2012 Jim Jagielski + * @copyright 2004 - 2009 Andy Prevost + * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License + * @note This program is distributed in the hope that it will be useful - WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. + */ + +namespace PHPMailer\PHPMailer; + +/** + * PHPMailer - PHP email creation and transport class. + * + * @author Marcus Bointon (Synchro/coolbru) + * @author Jim Jagielski (jimjag) + * @author Andy Prevost (codeworxtech) + * @author Brent R. Matzelle (original founder) + */ +class PHPMailer +{ + const CHARSET_ASCII = 'us-ascii'; + const CHARSET_ISO88591 = 'iso-8859-1'; + const CHARSET_UTF8 = 'utf-8'; + + const CONTENT_TYPE_PLAINTEXT = 'text/plain'; + const CONTENT_TYPE_TEXT_CALENDAR = 'text/calendar'; + const CONTENT_TYPE_TEXT_HTML = 'text/html'; + const CONTENT_TYPE_MULTIPART_ALTERNATIVE = 'multipart/alternative'; + const CONTENT_TYPE_MULTIPART_MIXED = 'multipart/mixed'; + const CONTENT_TYPE_MULTIPART_RELATED = 'multipart/related'; + + const ENCODING_7BIT = '7bit'; + const ENCODING_8BIT = '8bit'; + const ENCODING_BASE64 = 'base64'; + const ENCODING_BINARY = 'binary'; + const ENCODING_QUOTED_PRINTABLE = 'quoted-printable'; + + const ENCRYPTION_STARTTLS = 'tls'; + const ENCRYPTION_SMTPS = 'ssl'; + + const ICAL_METHOD_REQUEST = 'REQUEST'; + const ICAL_METHOD_PUBLISH = 'PUBLISH'; + const ICAL_METHOD_REPLY = 'REPLY'; + const ICAL_METHOD_ADD = 'ADD'; + const ICAL_METHOD_CANCEL = 'CANCEL'; + const ICAL_METHOD_REFRESH = 'REFRESH'; + const ICAL_METHOD_COUNTER = 'COUNTER'; + const ICAL_METHOD_DECLINECOUNTER = 'DECLINECOUNTER'; + + /** + * Email priority. + * Options: null (default), 1 = High, 3 = Normal, 5 = low. + * When null, the header is not set at all. + * + * @var int|null + */ + public $Priority; + + /** + * The character set of the message. + * + * @var string + */ + public $CharSet = self::CHARSET_ISO88591; + + /** + * The MIME Content-type of the message. + * + * @var string + */ + public $ContentType = self::CONTENT_TYPE_PLAINTEXT; + + /** + * The message encoding. + * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable". + * + * @var string + */ + public $Encoding = self::ENCODING_8BIT; + + /** + * Holds the most recent mailer error message. + * + * @var string + */ + public $ErrorInfo = ''; + + /** + * The From email address for the message. + * + * @var string + */ + public $From = 'root@localhost'; + + /** + * The From name of the message. + * + * @var string + */ + public $FromName = 'Root User'; + + /** + * The envelope sender of the message. + * This will usually be turned into a Return-Path header by the receiver, + * and is the address that bounces will be sent to. + * If not empty, will be passed via `-f` to sendmail or as the 'MAIL FROM' value over SMTP. + * + * @var string + */ + public $Sender = ''; + + /** + * The Subject of the message. + * + * @var string + */ + public $Subject = ''; + + /** + * An HTML or plain text message body. + * If HTML then call isHTML(true). + * + * @var string + */ + public $Body = ''; + + /** + * The plain-text message body. + * This body can be read by mail clients that do not have HTML email + * capability such as mutt & Eudora. + * Clients that can read HTML will view the normal Body. + * + * @var string + */ + public $AltBody = ''; + + /** + * An iCal message part body. + * Only supported in simple alt or alt_inline message types + * To generate iCal event structures, use classes like EasyPeasyICS or iCalcreator. + * + * @see http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/ + * @see http://kigkonsult.se/iCalcreator/ + * + * @var string + */ + public $Ical = ''; + + /** + * Value-array of "method" in Contenttype header "text/calendar" + * + * @var string[] + */ + protected static $IcalMethods = [ + self::ICAL_METHOD_REQUEST, + self::ICAL_METHOD_PUBLISH, + self::ICAL_METHOD_REPLY, + self::ICAL_METHOD_ADD, + self::ICAL_METHOD_CANCEL, + self::ICAL_METHOD_REFRESH, + self::ICAL_METHOD_COUNTER, + self::ICAL_METHOD_DECLINECOUNTER, + ]; + + /** + * The complete compiled MIME message body. + * + * @var string + */ + protected $MIMEBody = ''; + + /** + * The complete compiled MIME message headers. + * + * @var string + */ + protected $MIMEHeader = ''; + + /** + * Extra headers that createHeader() doesn't fold in. + * + * @var string + */ + protected $mailHeader = ''; + + /** + * Word-wrap the message body to this number of chars. + * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance. + * + * @see static::STD_LINE_LENGTH + * + * @var int + */ + public $WordWrap = 0; + + /** + * Which method to use to send mail. + * Options: "mail", "sendmail", or "smtp". + * + * @var string + */ + public $Mailer = 'mail'; + + /** + * The path to the sendmail program. + * + * @var string + */ + public $Sendmail = '/usr/sbin/sendmail'; + + /** + * Whether mail() uses a fully sendmail-compatible MTA. + * One which supports sendmail's "-oi -f" options. + * + * @var bool + */ + public $UseSendmailOptions = true; + + /** + * The email address that a reading confirmation should be sent to, also known as read receipt. + * + * @var string + */ + public $ConfirmReadingTo = ''; + + /** + * The hostname to use in the Message-ID header and as default HELO string. + * If empty, PHPMailer attempts to find one with, in order, + * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value + * 'localhost.localdomain'. + * + * @see PHPMailer::$Helo + * + * @var string + */ + public $Hostname = ''; + + /** + * An ID to be used in the Message-ID header. + * If empty, a unique id will be generated. + * You can set your own, but it must be in the format "", + * as defined in RFC5322 section 3.6.4 or it will be ignored. + * + * @see https://tools.ietf.org/html/rfc5322#section-3.6.4 + * + * @var string + */ + public $MessageID = ''; + + /** + * The message Date to be used in the Date header. + * If empty, the current date will be added. + * + * @var string + */ + public $MessageDate = ''; + + /** + * SMTP hosts. + * Either a single hostname or multiple semicolon-delimited hostnames. + * You can also specify a different port + * for each host by using this format: [hostname:port] + * (e.g. "smtp1.example.com:25;smtp2.example.com"). + * You can also specify encryption type, for example: + * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465"). + * Hosts will be tried in order. + * + * @var string + */ + public $Host = 'localhost'; + + /** + * The default SMTP server port. + * + * @var int + */ + public $Port = 25; + + /** + * The SMTP HELO/EHLO name used for the SMTP connection. + * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find + * one with the same method described above for $Hostname. + * + * @see PHPMailer::$Hostname + * + * @var string + */ + public $Helo = ''; + + /** + * What kind of encryption to use on the SMTP connection. + * Options: '', static::ENCRYPTION_STARTTLS, or static::ENCRYPTION_SMTPS. + * + * @var string + */ + public $SMTPSecure = ''; + + /** + * Whether to enable TLS encryption automatically if a server supports it, + * even if `SMTPSecure` is not set to 'tls'. + * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid. + * + * @var bool + */ + public $SMTPAutoTLS = true; + + /** + * Whether to use SMTP authentication. + * Uses the Username and Password properties. + * + * @see PHPMailer::$Username + * @see PHPMailer::$Password + * + * @var bool + */ + public $SMTPAuth = false; + + /** + * Options array passed to stream_context_create when connecting via SMTP. + * + * @var array + */ + public $SMTPOptions = []; + + /** + * SMTP username. + * + * @var string + */ + public $Username = ''; + + /** + * SMTP password. + * + * @var string + */ + public $Password = ''; + + /** + * SMTP auth type. + * Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2, attempted in that order if not specified. + * + * @var string + */ + public $AuthType = ''; + + /** + * An instance of the PHPMailer OAuth class. + * + * @var OAuth + */ + protected $oauth; + + /** + * The SMTP server timeout in seconds. + * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2. + * + * @var int + */ + public $Timeout = 300; + + /** + * Comma separated list of DSN notifications + * 'NEVER' under no circumstances a DSN must be returned to the sender. + * If you use NEVER all other notifications will be ignored. + * 'SUCCESS' will notify you when your mail has arrived at its destination. + * 'FAILURE' will arrive if an error occurred during delivery. + * 'DELAY' will notify you if there is an unusual delay in delivery, but the actual + * delivery's outcome (success or failure) is not yet decided. + * + * @see https://tools.ietf.org/html/rfc3461 See section 4.1 for more information about NOTIFY + */ + public $dsn = ''; + + /** + * SMTP class debug output mode. + * Debug output level. + * Options: + * @see SMTP::DEBUG_OFF: No output + * @see SMTP::DEBUG_CLIENT: Client messages + * @see SMTP::DEBUG_SERVER: Client and server messages + * @see SMTP::DEBUG_CONNECTION: As SERVER plus connection status + * @see SMTP::DEBUG_LOWLEVEL: Noisy, low-level data output, rarely needed + * + * @see SMTP::$do_debug + * + * @var int + */ + public $SMTPDebug = 0; + + /** + * How to handle debug output. + * Options: + * * `echo` Output plain-text as-is, appropriate for CLI + * * `html` Output escaped, line breaks converted to `
`, 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 SMTP connection open after each message. + * If this is set to true then to close the connection + * requires an explicit call to smtpClose(). + * + * @var bool + */ + public $SMTPKeepAlive = false; + + /** + * Whether to split multiple to addresses into multiple messages + * or send them all in one message. + * Only supported in `mail` and `sendmail` transports, not in SMTP. + * + * @var bool + * + * @deprecated 6.0.0 PHPMailer isn't a mailing list manager! + */ + public $SingleTo = false; + + /** + * Storage for addresses when SingleTo is enabled. + * + * @var array + */ + protected $SingleToArray = []; + + /** + * Whether to generate VERP addresses on send. + * Only applicable when sending via SMTP. + * + * @see https://en.wikipedia.org/wiki/Variable_envelope_return_path + * @see http://www.postfix.org/VERP_README.html Postfix VERP info + * + * @var bool + */ + public $do_verp = false; + + /** + * Whether to allow sending messages with an empty body. + * + * @var bool + */ + public $AllowEmpty = false; + + /** + * DKIM selector. + * + * @var string + */ + public $DKIM_selector = ''; + + /** + * DKIM Identity. + * Usually the email address used as the source of the email. + * + * @var string + */ + public $DKIM_identity = ''; + + /** + * DKIM passphrase. + * Used if your key is encrypted. + * + * @var string + */ + public $DKIM_passphrase = ''; + + /** + * DKIM signing domain name. + * + * @example 'example.com' + * + * @var string + */ + public $DKIM_domain = ''; + + /** + * DKIM Copy header field values for diagnostic use. + * + * @var bool + */ + public $DKIM_copyHeaderFields = true; + + /** + * DKIM Extra signing headers. + * + * @example ['List-Unsubscribe', 'List-Help'] + * + * @var array + */ + public $DKIM_extraHeaders = []; + + /** + * DKIM private key file path. + * + * @var string + */ + public $DKIM_private = ''; + + /** + * DKIM private key string. + * + * If set, takes precedence over `$DKIM_private`. + * + * @var string + */ + public $DKIM_private_string = ''; + + /** + * Callback Action function name. + * + * The function that handles the result of the send email action. + * It is called out by send() for each email sent. + * + * Value can be any php callable: http://www.php.net/is_callable + * + * Parameters: + * bool $result result of the send action + * array $to email addresses of the recipients + * array $cc cc email addresses + * array $bcc bcc email addresses + * string $subject the subject + * string $body the email body + * string $from email address of sender + * string $extra extra information of possible use + * "smtp_transaction_id' => last smtp transaction id + * + * @var string + */ + public $action_function = ''; + + /** + * What to put in the X-Mailer header. + * Options: An empty string for PHPMailer default, whitespace/null for none, or a string to use. + * + * @var string|null + */ + public $XMailer = ''; + + /** + * Which validator to use by default when validating email addresses. + * May be a callable to inject your own validator, but there are several built-in validators. + * The default validator uses PHP's FILTER_VALIDATE_EMAIL filter_var option. + * + * @see PHPMailer::validateAddress() + * + * @var string|callable + */ + public static $validator = 'php'; + + /** + * An instance of the SMTP sender class. + * + * @var SMTP + */ + protected $smtp; + + /** + * The array of 'to' names and addresses. + * + * @var array + */ + protected $to = []; + + /** + * The array of 'cc' names and addresses. + * + * @var array + */ + protected $cc = []; + + /** + * The array of 'bcc' names and addresses. + * + * @var array + */ + protected $bcc = []; + + /** + * The array of reply-to names and addresses. + * + * @var array + */ + protected $ReplyTo = []; + + /** + * An array of all kinds of addresses. + * Includes all of $to, $cc, $bcc. + * + * @see PHPMailer::$to + * @see PHPMailer::$cc + * @see PHPMailer::$bcc + * + * @var array + */ + protected $all_recipients = []; + + /** + * An array of names and addresses queued for validation. + * In send(), valid and non duplicate entries are moved to $all_recipients + * and one of $to, $cc, or $bcc. + * This array is used only for addresses with IDN. + * + * @see PHPMailer::$to + * @see PHPMailer::$cc + * @see PHPMailer::$bcc + * @see PHPMailer::$all_recipients + * + * @var array + */ + protected $RecipientsQueue = []; + + /** + * An array of reply-to names and addresses queued for validation. + * In send(), valid and non duplicate entries are moved to $ReplyTo. + * This array is used only for addresses with IDN. + * + * @see PHPMailer::$ReplyTo + * + * @var array + */ + protected $ReplyToQueue = []; + + /** + * The array of attachments. + * + * @var array + */ + protected $attachment = []; + + /** + * The array of custom headers. + * + * @var array + */ + protected $CustomHeader = []; + + /** + * The most recent Message-ID (including angular brackets). + * + * @var string + */ + protected $lastMessageID = ''; + + /** + * The message's MIME type. + * + * @var string + */ + protected $message_type = ''; + + /** + * The array of MIME boundary strings. + * + * @var array + */ + protected $boundary = []; + + /** + * The array of available languages. + * + * @var array + */ + protected $language = []; + + /** + * The number of errors encountered. + * + * @var int + */ + protected $error_count = 0; + + /** + * The S/MIME certificate file path. + * + * @var string + */ + protected $sign_cert_file = ''; + + /** + * The S/MIME key file path. + * + * @var string + */ + protected $sign_key_file = ''; + + /** + * The optional S/MIME extra certificates ("CA Chain") file path. + * + * @var string + */ + protected $sign_extracerts_file = ''; + + /** + * The S/MIME password for the key. + * Used only if the key is encrypted. + * + * @var string + */ + protected $sign_key_pass = ''; + + /** + * Whether to throw exceptions for errors. + * + * @var bool + */ + protected $exceptions = false; + + /** + * Unique ID used for message ID and boundaries. + * + * @var string + */ + protected $uniqueid = ''; + + /** + * The PHPMailer Version number. + * + * @var string + */ + const VERSION = '6.4.0'; + + /** + * Error severity: message only, continue processing. + * + * @var int + */ + const STOP_MESSAGE = 0; + + /** + * Error severity: message, likely ok to continue processing. + * + * @var int + */ + const STOP_CONTINUE = 1; + + /** + * Error severity: message, plus full stop, critical error reached. + * + * @var int + */ + const STOP_CRITICAL = 2; + + /** + * The SMTP standard CRLF line break. + * If you want to change line break format, change static::$LE, not this. + */ + const CRLF = "\r\n"; + + /** + * "Folding White Space" a white space string used for line folding. + */ + const FWS = ' '; + + /** + * SMTP RFC standard line ending; Carriage Return, Line Feed. + * + * @var string + */ + protected static $LE = self::CRLF; + + /** + * The maximum line length supported by mail(). + * + * Background: mail() will sometimes corrupt messages + * with headers headers longer than 65 chars, see #818. + * + * @var int + */ + const MAIL_MAX_LINE_LENGTH = 63; + + /** + * The maximum line length allowed by RFC 2822 section 2.1.1. + * + * @var int + */ + const MAX_LINE_LENGTH = 998; + + /** + * The lower maximum line length allowed by RFC 2822 section 2.1.1. + * This length does NOT include the line break + * 76 means that lines will be 77 or 78 chars depending on whether + * the line break format is LF or CRLF; both are valid. + * + * @var int + */ + const STD_LINE_LENGTH = 76; + + /** + * Constructor. + * + * @param bool $exceptions Should we throw external exceptions? + */ + public function __construct($exceptions = null) + { + if (null !== $exceptions) { + $this->exceptions = (bool) $exceptions; + } + //Pick an appropriate debug output format automatically + $this->Debugoutput = (strpos(PHP_SAPI, 'cli') !== false ? 'echo' : 'html'); + } + + /** + * Destructor. + */ + public function __destruct() + { + //Close any open SMTP connection nicely + $this->smtpClose(); + } + + /** + * Call mail() in a safe_mode-aware fashion. + * Also, unless sendmail_path points to sendmail (or something that + * claims to be sendmail), don't pass params (not a perfect fix, + * but it will do). + * + * @param string $to To + * @param string $subject Subject + * @param string $body Message Body + * @param string $header Additional Header(s) + * @param string|null $params Params + * + * @return bool + */ + private function mailPassthru($to, $subject, $body, $header, $params) + { + //Check overloading of mail function to avoid double-encoding + if (ini_get('mbstring.func_overload') & 1) { + $subject = $this->secureHeader($subject); + } else { + $subject = $this->encodeHeader($this->secureHeader($subject)); + } + //Calling mail() with null params breaks + $this->edebug('Sending with mail()'); + $this->edebug('Sendmail path: ' . ini_get('sendmail_path')); + $this->edebug("Envelope sender: {$this->Sender}"); + $this->edebug("To: {$to}"); + $this->edebug("Subject: {$subject}"); + $this->edebug("Headers: {$header}"); + if (!$this->UseSendmailOptions || null === $params) { + $result = @mail($to, $subject, $body, $header); + } else { + $this->edebug("Additional params: {$params}"); + $result = @mail($to, $subject, $body, $header, $params); + } + $this->edebug('Result: ' . ($result ? 'true' : 'false')); + return $result; + } + + /** + * Output debugging info via a user-defined method. + * Only generates output if debug output is enabled. + * + * @see PHPMailer::$Debugoutput + * @see PHPMailer::$SMTPDebug + * + * @param string $str + */ + protected function edebug($str) + { + if ($this->SMTPDebug <= 0) { + return; + } + //Is this a PSR-3 logger? + if ($this->Debugoutput instanceof \Psr\Log\LoggerInterface) { + $this->Debugoutput->debug($str); + + return; + } + //Avoid clash with built-in function names + if (is_callable($this->Debugoutput) && !in_array($this->Debugoutput, ['error_log', 'html', 'echo'])) { + call_user_func($this->Debugoutput, $str, $this->SMTPDebug); + + return; + } + switch ($this->Debugoutput) { + case 'error_log': + //Don't output, just log + /** @noinspection ForgottenDebugOutputInspection */ + error_log($str); + break; + case 'html': + //Cleans up output a bit for a better looking, HTML-safe output + echo htmlentities( + preg_replace('/[\r\n]+/', '', $str), + ENT_QUOTES, + 'UTF-8' + ), "
\n"; + break; + case 'echo': + default: + //Normalize line breaks + $str = preg_replace('/\r\n|\r/m', "\n", $str); + echo gmdate('Y-m-d H:i:s'), + "\t", + //Trim trailing space + trim( + //Indent for readability, except for trailing break + str_replace( + "\n", + "\n \t ", + trim($str) + ) + ), + "\n"; + } + } + + /** + * Sets message type to HTML or plain. + * + * @param bool $isHtml True for HTML mode + */ + public function isHTML($isHtml = true) + { + if ($isHtml) { + $this->ContentType = static::CONTENT_TYPE_TEXT_HTML; + } else { + $this->ContentType = static::CONTENT_TYPE_PLAINTEXT; + } + } + + /** + * Send messages using SMTP. + */ + public function isSMTP() + { + $this->Mailer = 'smtp'; + } + + /** + * Send messages using PHP's mail() function. + */ + public function isMail() + { + $this->Mailer = 'mail'; + } + + /** + * Send messages using $Sendmail. + */ + public function isSendmail() + { + $ini_sendmail_path = ini_get('sendmail_path'); + + if (false === stripos($ini_sendmail_path, 'sendmail')) { + $this->Sendmail = '/usr/sbin/sendmail'; + } else { + $this->Sendmail = $ini_sendmail_path; + } + $this->Mailer = 'sendmail'; + } + + /** + * Send messages using qmail. + */ + public function isQmail() + { + $ini_sendmail_path = ini_get('sendmail_path'); + + if (false === stripos($ini_sendmail_path, 'qmail')) { + $this->Sendmail = '/var/qmail/bin/qmail-inject'; + } else { + $this->Sendmail = $ini_sendmail_path; + } + $this->Mailer = 'qmail'; + } + + /** + * Add a "To" address. + * + * @param string $address The email address to send to + * @param string $name + * + * @throws Exception + * + * @return bool true on success, false if address already used or invalid in some way + */ + public function addAddress($address, $name = '') + { + return $this->addOrEnqueueAnAddress('to', $address, $name); + } + + /** + * Add a "CC" address. + * + * @param string $address The email address to send to + * @param string $name + * + * @throws Exception + * + * @return bool true on success, false if address already used or invalid in some way + */ + public function addCC($address, $name = '') + { + return $this->addOrEnqueueAnAddress('cc', $address, $name); + } + + /** + * Add a "BCC" address. + * + * @param string $address The email address to send to + * @param string $name + * + * @throws Exception + * + * @return bool true on success, false if address already used or invalid in some way + */ + public function addBCC($address, $name = '') + { + return $this->addOrEnqueueAnAddress('bcc', $address, $name); + } + + /** + * Add a "Reply-To" address. + * + * @param string $address The email address to reply to + * @param string $name + * + * @throws Exception + * + * @return bool true on success, false if address already used or invalid in some way + */ + public function addReplyTo($address, $name = '') + { + return $this->addOrEnqueueAnAddress('Reply-To', $address, $name); + } + + /** + * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer + * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still + * be modified after calling this function), addition of such addresses is delayed until send(). + * Addresses that have been added already return false, but do not throw exceptions. + * + * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo' + * @param string $address The email address to send, resp. to reply to + * @param string $name + * + * @throws Exception + * + * @return bool true on success, false if address already used or invalid in some way + */ + protected function addOrEnqueueAnAddress($kind, $address, $name) + { + $address = trim($address); + $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim + $pos = strrpos($address, '@'); + if (false === $pos) { + //At-sign is missing. + $error_message = sprintf( + '%s (%s): %s', + $this->lang('invalid_address'), + $kind, + $address + ); + $this->setError($error_message); + $this->edebug($error_message); + if ($this->exceptions) { + throw new Exception($error_message); + } + + return false; + } + $params = [$kind, $address, $name]; + //Enqueue addresses with IDN until we know the PHPMailer::$CharSet. + if (static::idnSupported() && $this->has8bitChars(substr($address, ++$pos))) { + if ('Reply-To' !== $kind) { + if (!array_key_exists($address, $this->RecipientsQueue)) { + $this->RecipientsQueue[$address] = $params; + + return true; + } + } elseif (!array_key_exists($address, $this->ReplyToQueue)) { + $this->ReplyToQueue[$address] = $params; + + return true; + } + + return false; + } + + //Immediately add standard addresses without IDN. + return call_user_func_array([$this, 'addAnAddress'], $params); + } + + /** + * Add an address to one of the recipient arrays or to the ReplyTo array. + * Addresses that have been added already return false, but do not throw exceptions. + * + * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo' + * @param string $address The email address to send, resp. to reply to + * @param string $name + * + * @throws Exception + * + * @return bool true on success, false if address already used or invalid in some way + */ + protected function addAnAddress($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
" into an array of name/address pairs. + * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available. + * Note that quotes in the name part are removed. + * + * @see http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation + * + * @param string $addrstr The address list string + * @param bool $useimap Whether to use the IMAP extension to parse the list + * + * @return array + */ + public static function parseAddresses($addrstr, $useimap = true) + { + $addresses = []; + if ($useimap && function_exists('imap_rfc822_parse_adrlist')) { + //Use this built-in parser if it's available + $list = imap_rfc822_parse_adrlist($addrstr, ''); + foreach ($list as $address) { + if ( + ('.SYNTAX-ERROR.' !== $address->host) && static::validateAddress( + $address->mailbox . '@' . $address->host + ) + ) { + //Decode the name part if it's present and encoded + if ( + property_exists($address, 'personal') && + extension_loaded('mbstring') && + preg_match('/^=\?.*\?=$/', $address->personal) + ) { + $address->personal = mb_decode_mimeheader($address->personal); + } + + $addresses[] = [ + 'name' => (property_exists($address, 'personal') ? $address->personal : ''), + 'address' => $address->mailbox . '@' . $address->host, + ]; + } + } + } else { + //Use this simpler parser + $list = explode(',', $addrstr); + foreach ($list as $address) { + $address = trim($address); + //Is there a separate name part? + if (strpos($address, '<') === false) { + //No separate name, just use the whole thing + if (static::validateAddress($address)) { + $addresses[] = [ + 'name' => '', + 'address' => $address, + ]; + } + } else { + list($name, $email) = explode('<', $address); + $email = trim(str_replace('>', '', $email)); + $name = trim($name); + if (static::validateAddress($email)) { + //If this name is encoded, decode it + if (preg_match('/^=\?.*\?=$/', $name)) { + $name = mb_decode_mimeheader($name); + } + $addresses[] = [ + //Remove any surrounding quotes and spaces from the name + 'name' => trim($name, '\'" '), + 'address' => $email, + ]; + } + } + } + } + + return $addresses; + } + + /** + * Set the From and FromName properties. + * + * @param string $address + * @param string $name + * @param bool $auto Whether to also set the Sender address, defaults to true + * + * @throws Exception + * + * @return bool + */ + public function setFrom($address, $name = '', $auto = true) + { + $address = trim($address); + $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim + //Don't validate now addresses with IDN. Will be done in send(). + $pos = strrpos($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; + } + if (is_callable($patternselect)) { + return call_user_func($patternselect, $address); + } + //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321 + if (strpos($address, "\n") !== false || strpos($address, "\r") !== false) { + return false; + } + switch ($patternselect) { + case 'pcre': //Kept for BC + case 'pcre8': + /* + * A more complex and more permissive version of the RFC5322 regex on which FILTER_VALIDATE_EMAIL + * is based. + * In addition to the addresses allowed by filter_var, also permits: + * * dotless domains: `a@b` + * * comments: `1234 @ local(blah) .machine .example` + * * quoted elements: `'"test blah"@example.org'` + * * numeric TLDs: `a@b.123` + * * unbracketed IPv4 literals: `a@192.168.0.1` + * * IPv6 literals: 'first.last@[IPv6:a1::]' + * Not all of these will necessarily work for sending! + * + * @see http://squiloople.com/2009/12/20/email-address-validation/ + * @copyright 2009-2010 Michael Rushton + * Feel free to use and redistribute this code. But please keep this copyright notice. + */ + return (bool) preg_match( + '/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' . + '((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' . + '(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' . + '([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' . + '(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' . + '(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' . + '|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' . + '|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' . + '|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD', + $address + ); + case 'html5': + /* + * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements. + * + * @see https://html.spec.whatwg.org/#e-mail-state-(type=email) + */ + return (bool) preg_match( + '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' . + '[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD', + $address + ); + case 'php': + default: + return filter_var($address, FILTER_VALIDATE_EMAIL) !== false; + } + } + + /** + * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the + * `intl` and `mbstring` PHP extensions. + * + * @return bool `true` if required functions for IDN support are present + */ + public static function idnSupported() + { + return function_exists('idn_to_ascii') && function_exists('mb_convert_encoding'); + } + + /** + * Converts IDN in given email address to its ASCII form, also known as punycode, if possible. + * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet. + * This function silently returns unmodified address if: + * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form) + * - Conversion to punycode is impossible (e.g. required PHP functions are not available) + * or fails for any reason (e.g. domain contains characters not allowed in an IDN). + * + * @see PHPMailer::$CharSet + * + * @param string $address The email address to convert + * + * @return string The encoded address in ASCII form + */ + public function punyencodeAddress($address) + { + //Verify we have required functions, CharSet, and at-sign. + $pos = strrpos($address, '@'); + if ( + !empty($this->CharSet) && + false !== $pos && + static::idnSupported() + ) { + $domain = substr($address, ++$pos); + //Verify CharSet string is a valid one, and domain properly encoded in this CharSet. + if ($this->has8bitChars($domain) && @mb_check_encoding($domain, $this->CharSet)) { + //Convert the domain from whatever charset it's in to UTF-8 + $domain = mb_convert_encoding($domain, self::CHARSET_UTF8, $this->CharSet); + //Ignore IDE complaints about this line - method signature changed in PHP 5.4 + $errorcode = 0; + if (defined('INTL_IDNA_VARIANT_UTS46')) { + //Use the current punycode standard (appeared in PHP 7.2) + $punycode = idn_to_ascii($domain, $errorcode, \INTL_IDNA_VARIANT_UTS46); + } elseif (defined('INTL_IDNA_VARIANT_2003')) { + //Fall back to this old, deprecated/removed encoding + $punycode = idn_to_ascii($domain, $errorcode, \INTL_IDNA_VARIANT_2003); + } else { + //Fall back to a default we don't know about + $punycode = idn_to_ascii($domain, $errorcode); + } + if (false !== $punycode) { + return substr($address, 0, $pos) . $punycode; + } + } + } + + return $address; + } + + /** + * Create a message and send it. + * Uses the sending method specified by $Mailer. + * + * @throws Exception + * + * @return bool false on error - See the ErrorInfo property for details of the error + */ + public function send() + { + try { + if (!$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( + 'Your version of PHP is affected by a bug that may result in corrupted messages.' . + ' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' . + ' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.', + E_USER_WARNING + ); + } + + try { + $this->error_count = 0; //Reset errors + $this->mailHeader = ''; + + //Dequeue recipient and Reply-To addresses with IDN + foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) { + $params[1] = $this->punyencodeAddress($params[1]); + call_user_func_array([$this, 'addAnAddress'], $params); + } + if (count($this->to) + count($this->cc) + count($this->bcc) < 1) { + throw new Exception($this->lang('provide_address'), self::STOP_CRITICAL); + } + + //Validate From, Sender, and ConfirmReadingTo addresses + foreach (['From', 'Sender', 'ConfirmReadingTo'] as $address_kind) { + $this->$address_kind = trim($this->$address_kind); + if (empty($this->$address_kind)) { + continue; + } + $this->$address_kind = $this->punyencodeAddress($this->$address_kind); + if (!static::validateAddress($this->$address_kind)) { + $error_message = sprintf( + '%s (%s): %s', + $this->lang('invalid_address'), + $address_kind, + $this->$address_kind + ); + $this->setError($error_message); + $this->edebug($error_message); + if ($this->exceptions) { + throw new Exception($error_message); + } + + return false; + } + } + + //Set whether the message is multipart/alternative + if ($this->alternativeExists()) { + $this->ContentType = static::CONTENT_TYPE_MULTIPART_ALTERNATIVE; + } + + $this->setMessageType(); + //Refuse to send an empty message unless we are specifically allowing it + if (!$this->AllowEmpty && empty($this->Body)) { + throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL); + } + + //Trim subject consistently + $this->Subject = trim($this->Subject); + //Create body before headers in case body makes changes to headers (e.g. altering transfer encoding) + $this->MIMEHeader = ''; + $this->MIMEBody = $this->createBody(); + //createBody may have added some headers, so retain them + $tempheaders = $this->MIMEHeader; + $this->MIMEHeader = $this->createHeader(); + $this->MIMEHeader .= $tempheaders; + + //To capture the complete message when using mail(), create + //an extra header list which createHeader() doesn't fold in + if ('mail' === $this->Mailer) { + if (count($this->to) > 0) { + $this->mailHeader .= $this->addrAppend('To', $this->to); + } else { + $this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;'); + } + $this->mailHeader .= $this->headerLine( + 'Subject', + $this->encodeHeader($this->secureHeader($this->Subject)) + ); + } + + //Sign with DKIM if enabled + if ( + !empty($this->DKIM_domain) + && !empty($this->DKIM_selector) + && (!empty($this->DKIM_private_string) + || (!empty($this->DKIM_private) + && static::isPermittedPath($this->DKIM_private) + && file_exists($this->DKIM_private) + ) + ) + ) { + $header_dkim = $this->DKIM_Add( + $this->MIMEHeader . $this->mailHeader, + $this->encodeHeader($this->secureHeader($this->Subject)), + $this->MIMEBody + ); + $this->MIMEHeader = static::stripTrailingWSP($this->MIMEHeader) . static::$LE . + static::normalizeBreaks($header_dkim) . static::$LE; + } + + return true; + } catch (Exception $exc) { + $this->setError($exc->getMessage()); + if ($this->exceptions) { + throw $exc; + } + + return false; + } + } + + /** + * Actually send a message via the selected mechanism. + * + * @throws Exception + * + * @return bool + */ + public function postSend() + { + try { + //Choose the mailer and send through it + switch ($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 $exc) { + if ($this->Mailer === 'smtp' && $this->SMTPKeepAlive == true) { + $this->smtp->reset(); + } + $this->setError($exc->getMessage()); + $this->edebug($exc->getMessage()); + if ($this->exceptions) { + throw $exc; + } + } + + return false; + } + + /** + * Send mail using the $Sendmail program. + * + * @see PHPMailer::$Sendmail + * + * @param string $header The message headers + * @param string $body The message body + * + * @throws Exception + * + * @return bool + */ + protected function sendmailSend($header, $body) + { + if ($this->Mailer === 'qmail') { + $this->edebug('Sending with qmail'); + } else { + $this->edebug('Sending with sendmail'); + } + $header = static::stripTrailingWSP($header) . static::$LE . static::$LE; + //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver + //A space after `-f` is optional, but there is a long history of its presence + //causing problems, so we don't use one + //Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html + //Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html + //Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html + //Example problem: https://www.drupal.org/node/1057954 + if (empty($this->Sender) && !empty(ini_get('sendmail_from'))) { + //PHP config has a sender address we can use + $this->Sender = ini_get('sendmail_from'); + } + //CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped. + if (!empty($this->Sender) && static::validateAddress($this->Sender) && self::isShellSafe($this->Sender)) { + if ($this->Mailer === 'qmail') { + $sendmailFmt = '%s -f%s'; + } else { + $sendmailFmt = '%s -oi -f%s -t'; + } + } else { + //allow sendmail to choose a default envelope sender. It may + //seem preferable to force it to use the From header as with + //SMTP, but that introduces new problems (see + //), 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); + $this->doCallback( + ($result === 0), + [$toAddr], + $this->cc, + $this->bcc, + $this->Subject, + $body, + $this->From, + [] + ); + $this->edebug("Result: " . ($result === 0 ? 'true' : 'false')); + if (0 !== $result) { + throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL); + } + } + } else { + $mail = @popen($sendmail, 'w'); + if (!$mail) { + throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL); + } + fwrite($mail, $header); + fwrite($mail, $body); + $result = pclose($mail); + $this->doCallback( + ($result === 0), + $this->to, + $this->cc, + $this->bcc, + $this->Subject, + $body, + $this->From, + [] + ); + $this->edebug("Result: " . ($result === 0 ? 'true' : 'false')); + if (0 !== $result) { + throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL); + } + } + + return true; + } + + /** + * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters. + * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows. + * + * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report + * + * @param string $string The string to be validated + * + * @return bool + */ + protected static function isShellSafe($string) + { + //Future-proof + if ( + escapeshellcmd($string) !== $string + || !in_array(escapeshellarg($string), ["'$string'", "\"$string\""]) + ) { + return false; + } + + $length = strlen($string); + + for ($i = 0; $i < $length; ++$i) { + $c = $string[$i]; + + //All other characters have a special meaning in at least one common shell, including = and +. + //Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here. + //Note that this does permit non-Latin alphanumeric characters based on the current locale. + if (!ctype_alnum($c) && strpos('@_-.', $c) === false) { + return false; + } + } + + return true; + } + + /** + * Check whether a file path is of a permitted type. + * Used to reject URLs and phar files from functions that access local file paths, + * such as addAttachment. + * + * @param string $path A relative or absolute path to a file + * + * @return bool + */ + protected static function isPermittedPath($path) + { + return !preg_match('#^[a-z]+://#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) + { + $readable = file_exists($path); + //If not a UNC path (expected to start with \\), check read permission, see #2069 + if (strpos($path, '\\\\') !== 0) { + $readable = $readable && is_readable($path); + } + return static::isPermittedPath($path) && $readable; + } + + /** + * Send mail using the PHP mail() function. + * + * @see http://www.php.net/manual/en/book.mail.php + * + * @param string $header The message headers + * @param string $body The message body + * + * @throws Exception + * + * @return bool + */ + protected function mailSend($header, $body) + { + $header = static::stripTrailingWSP($header) . static::$LE . static::$LE; + + $toArr = []; + foreach ($this->to as $toaddr) { + $toArr[] = $this->addrFormat($toaddr); + } + $to = implode(', ', $toArr); + + $params = null; + //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver + //A space after `-f` is optional, but there is a long history of its presence + //causing problems, so we don't use one + //Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html + //Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html + //Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html + //Example problem: https://www.drupal.org/node/1057954 + //CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped. + if (empty($this->Sender) && !empty(ini_get('sendmail_from'))) { + //PHP config has a sender address we can use + $this->Sender = ini_get('sendmail_from'); + } + if (!empty($this->Sender) && static::validateAddress($this->Sender)) { + if (self::isShellSafe($this->Sender)) { + $params = sprintf('-f%s', $this->Sender); + } + $old_from = ini_get('sendmail_from'); + ini_set('sendmail_from', $this->Sender); + } + $result = false; + if ($this->SingleTo && count($toArr) > 1) { + foreach ($toArr as $toAddr) { + $result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params); + $this->doCallback($result, [$toAddr], $this->cc, $this->bcc, $this->Subject, $body, $this->From, []); + } + } else { + $result = $this->mailPassthru($to, $this->Subject, $body, $header, $params); + $this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From, []); + } + if (isset($old_from)) { + ini_set('sendmail_from', $old_from); + } + if (!$result) { + throw new Exception($this->lang('instantiate'), self::STOP_CRITICAL); + } + + return true; + } + + /** + * Get an instance to use for SMTP operations. + * Override this function to load your own SMTP implementation, + * or set one with setSMTPInstance. + * + * @return SMTP + */ + public function getSMTPInstance() + { + if (!is_object($this->smtp)) { + $this->smtp = new SMTP(); + } + + return $this->smtp; + } + + /** + * Provide an instance to use for SMTP operations. + * + * @return SMTP + */ + public function setSMTPInstance(SMTP $smtp) + { + $this->smtp = $smtp; + + return $this->smtp; + } + + /** + * Send mail via SMTP. + * Returns false if there is a bad MAIL FROM, RCPT, or DATA input. + * + * @see PHPMailer::setSMTPInstance() to use a different class. + * + * @uses \PHPMailer\PHPMailer\SMTP + * + * @param string $header The message headers + * @param string $body The message body + * + * @throws Exception + * + * @return bool + */ + protected function smtpSend($header, $body) + { + $header = static::stripTrailingWSP($header) . static::$LE . static::$LE; + $bad_rcpt = []; + if (!$this->smtpConnect($this->SMTPOptions)) { + throw new Exception($this->lang('smtp_connect_failed'), self::STOP_CRITICAL); + } + //Sender already validated in preSend() + if ('' === $this->Sender) { + $smtp_from = $this->From; + } else { + $smtp_from = $this->Sender; + } + if (!$this->smtp->mail($smtp_from)) { + $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError())); + throw new Exception($this->ErrorInfo, self::STOP_CRITICAL); + } + + $callbacks = []; + //Attempt to send to all recipients + foreach ([$this->to, $this->cc, $this->bcc] as $togroup) { + foreach ($togroup as $to) { + if (!$this->smtp->recipient($to[0], $this->dsn)) { + $error = $this->smtp->getError(); + $bad_rcpt[] = ['to' => $to[0], 'error' => $error['detail']]; + $isSent = false; + } else { + $isSent = true; + } + + $callbacks[] = ['issent' => $isSent, 'to' => $to[0]]; + } + } + + //Only send the DATA command if we have viable recipients + if ((count($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']], + [], + [], + $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); + $hosts = explode(';', $this->Host); + $lastexception = null; + + foreach ($hosts as $hostentry) { + $hostinfo = []; + if ( + !preg_match( + '/^(?:(ssl|tls):\/\/)?(.+?)(?::(\d+))?$/', + trim($hostentry), + $hostinfo + ) + ) { + $this->edebug($this->lang('invalid_hostentry') . ' ' . trim($hostentry)); + //Not a valid host entry + continue; + } + //$hostinfo[1]: optional ssl or tls prefix + //$hostinfo[2]: the hostname + //$hostinfo[3]: optional port number + //The host string prefix can temporarily override the current setting for SMTPSecure + //If it's not specified, the default value is used + + //Check the host name is a valid name or IP address before trying to use it + if (!static::isValidHost($hostinfo[2])) { + $this->edebug($this->lang('invalid_host') . ' ' . $hostinfo[2]); + continue; + } + $prefix = ''; + $secure = $this->SMTPSecure; + $tls = (static::ENCRYPTION_STARTTLS === $this->SMTPSecure); + if ('ssl' === $hostinfo[1] || ('' === $hostinfo[1] && static::ENCRYPTION_SMTPS === $this->SMTPSecure)) { + $prefix = 'ssl://'; + $tls = false; //Can't have SSL and TLS at the same time + $secure = static::ENCRYPTION_SMTPS; + } elseif ('tls' === $hostinfo[1]) { + $tls = true; + //TLS doesn't use a prefix + $secure = static::ENCRYPTION_STARTTLS; + } + //Do we need the OpenSSL extension? + $sslext = defined('OPENSSL_ALGO_SHA256'); + if (static::ENCRYPTION_STARTTLS === $secure || static::ENCRYPTION_SMTPS === $secure) { + //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled + if (!$sslext) { + throw new Exception($this->lang('extension_missing') . 'openssl', self::STOP_CRITICAL); + } + } + $host = $hostinfo[2]; + $port = $this->Port; + if ( + array_key_exists(3, $hostinfo) && + is_numeric($hostinfo[3]) && + $hostinfo[3] > 0 && + $hostinfo[3] < 65536 + ) { + $port = (int) $hostinfo[3]; + } + if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) { + try { + if ($this->Helo) { + $hello = $this->Helo; + } else { + $hello = $this->serverHostname(); + } + $this->smtp->hello($hello); + //Automatically enable TLS encryption if: + //* it's not disabled + //* we have openssl extension + //* we are not already using SSL + //* the server offers STARTTLS + if ($this->SMTPAutoTLS && $sslext && 'ssl' !== $secure && $this->smtp->getServerExt('STARTTLS')) { + $tls = true; + } + if ($tls) { + if (!$this->smtp->startTLS()) { + throw new Exception($this->lang('connect_host')); + } + //We must resend EHLO after TLS negotiation + $this->smtp->hello($hello); + } + if ( + $this->SMTPAuth && !$this->smtp->authenticate( + $this->Username, + $this->Password, + $this->AuthType, + $this->oauth + ) + ) { + throw new Exception($this->lang('authenticate')); + } + + return true; + } catch (Exception $exc) { + $lastexception = $exc; + $this->edebug($exc->getMessage()); + //We must have connected, but then failed TLS or Auth, so close connection nicely + $this->smtp->quit(); + } + } + } + //If we get here, all connection attempts have failed, so close connection hard + $this->smtp->close(); + //As we've caught all exceptions, just report whatever the last one was + if ($this->exceptions && null !== $lastexception) { + throw $lastexception; + } + + return false; + } + + /** + * Close the active SMTP session if one exists. + */ + public function smtpClose() + { + if ((null !== $this->smtp) && $this->smtp->connected()) { + $this->smtp->quit(); + $this->smtp->close(); + } + } + + /** + * Set the language for error messages. + * Returns false if it cannot load the language file. + * The default language is English. + * + * @param string $langcode ISO 639-1 2-character language code (e.g. French is "fr") + * @param string $lang_path Path to the language file directory, with trailing separator (slash) + * + * @return bool + */ + public function setLanguage($langcode = 'en', $lang_path = '') + { + //Backwards compatibility for renamed language codes + $renamed_langcodes = [ + 'br' => 'pt_br', + 'cz' => 'cs', + 'dk' => 'da', + 'no' => 'nb', + 'se' => 'sv', + 'rs' => 'sr', + 'tg' => 'tl', + 'am' => 'hy', + ]; + + if (array_key_exists($langcode, $renamed_langcodes)) { + $langcode = $renamed_langcodes[$langcode]; + } + + //Define full set of translatable strings in English + $PHPMAILER_LANG = [ + 'authenticate' => 'SMTP Error: Could not authenticate.', + 'connect_host' => 'SMTP Error: Could not connect to SMTP host.', + 'data_not_accepted' => 'SMTP Error: data not accepted.', + 'empty_message' => 'Message body empty', + 'encoding' => 'Unknown encoding: ', + 'execute' => 'Could not execute: ', + 'file_access' => 'Could not access file: ', + 'file_open' => 'File Error: Could not open file: ', + 'from_failed' => 'The following From address failed: ', + 'instantiate' => 'Could not instantiate mail function.', + 'invalid_address' => 'Invalid address: ', + 'invalid_hostentry' => 'Invalid hostentry: ', + 'invalid_host' => 'Invalid host: ', + 'mailer_not_supported' => ' mailer is not supported.', + 'provide_address' => 'You must provide at least one recipient email address.', + 'recipients_failed' => 'SMTP Error: The following recipients failed: ', + 'signing' => 'Signing Error: ', + 'smtp_connect_failed' => 'SMTP connect() failed.', + 'smtp_error' => 'SMTP server error: ', + 'variable_set' => 'Cannot set or reset variable: ', + 'extension_missing' => 'Extension missing: ', + ]; + if (empty($lang_path)) { + //Calculate an absolute path so it can work if CWD is not here + $lang_path = dirname(__DIR__) . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR; + } + //Validate $langcode + if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) { + $langcode = 'en'; + } + $foundlang = true; + $lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php'; + //There is no English translation file + if ('en' !== $langcode) { + //Make sure language file path is readable + if (!static::fileIsAccessible($lang_file)) { + $foundlang = false; + } else { + //Overwrite language-specific strings. + //This way we'll never have missing translation keys. + $foundlang = include $lang_file; + } + } + $this->language = $PHPMAILER_LANG; + + return (bool) $foundlang; //Returns false if language not found + } + + /** + * Get the array of strings for the current language. + * + * @return array + */ + public function getTranslations() + { + return $this->language; + } + + /** + * Create recipient headers. + * + * @param string $type + * @param array $addr An array of recipients, + * where each recipient is a 2-element indexed array with element 0 containing an address + * and element 1 containing a name, like: + * [['joe@example.com', 'Joe User'], ['zoe@example.com', 'Zoe User']] + * + * @return string + */ + public function addrAppend($type, $addr) + { + $addresses = []; + foreach ($addr as $address) { + $addresses[] = $this->addrFormat($address); + } + + return $type . ': ' . implode(', ', $addresses) . static::$LE; + } + + /** + * Format an address for use in a message header. + * + * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name like + * ['joe@example.com', 'Joe User'] + * + * @return string + */ + public function addrFormat($addr) + { + if (empty($addr[1])) { //No name provided + return $this->secureHeader($addr[0]); + } + + return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . + ' <' . $this->secureHeader($addr[0]) . '>'; + } + + /** + * Word-wrap message. + * For use with mailers that do not automatically perform wrapping + * and for quoted-printable encoded messages. + * Original written by philippe. + * + * @param string $message The message to wrap + * @param int $length The line length to wrap to + * @param bool $qp_mode Whether to run in Quoted-Printable mode + * + * @return string + */ + public function wrapText($message, $length, $qp_mode = false) + { + if ($qp_mode) { + $soft_break = sprintf(' =%s', static::$LE); + } else { + $soft_break = static::$LE; + } + //If utf-8 encoding is used, we will need to make sure we don't + //split multibyte characters when we wrap + $is_utf8 = static::CHARSET_UTF8 === strtolower($this->CharSet); + $lelen = strlen(static::$LE); + $crlflen = strlen(static::$LE); + + $message = static::normalizeBreaks($message); + //Remove a trailing line break + if (substr($message, -$lelen) === static::$LE) { + $message = substr($message, 0, -$lelen); + } + + //Split message into lines + $lines = explode(static::$LE, $message); + //Message will be rebuilt in here + $message = ''; + foreach ($lines as $line) { + $words = explode(' ', $line); + $buf = ''; + $firstword = true; + foreach ($words as $word) { + if ($qp_mode && (strlen($word) > $length)) { + $space_left = $length - strlen($buf) - $crlflen; + if (!$firstword) { + if ($space_left > 20) { + $len = $space_left; + if ($is_utf8) { + $len = $this->utf8CharBoundary($word, $len); + } elseif ('=' === substr($word, $len - 1, 1)) { + --$len; + } elseif ('=' === substr($word, $len - 2, 1)) { + $len -= 2; + } + $part = substr($word, 0, $len); + $word = substr($word, $len); + $buf .= ' ' . $part; + $message .= $buf . sprintf('=%s', static::$LE); + } else { + $message .= $buf . $soft_break; + } + $buf = ''; + } + while ($word !== '') { + if ($length <= 0) { + break; + } + $len = $length; + if ($is_utf8) { + $len = $this->utf8CharBoundary($word, $len); + } elseif ('=' === substr($word, $len - 1, 1)) { + --$len; + } elseif ('=' === substr($word, $len - 2, 1)) { + $len -= 2; + } + $part = substr($word, 0, $len); + $word = (string) substr($word, $len); + + if ($word !== '') { + $message .= $part . sprintf('=%s', static::$LE); + } else { + $buf = $part; + } + } + } else { + $buf_o = $buf; + if (!$firstword) { + $buf .= ' '; + } + $buf .= $word; + + if ('' !== $buf_o && strlen($buf) > $length) { + $message .= $buf_o . $soft_break; + $buf = $word; + } + } + $firstword = false; + } + $message .= $buf . static::$LE; + } + + return $message; + } + + /** + * Find the last character boundary prior to $maxLength in a utf-8 + * quoted-printable encoded string. + * Original written by Colin Brown. + * + * @param string $encodedText utf-8 QP text + * @param int $maxLength Find the last character boundary prior to this length + * + * @return int + */ + public function utf8CharBoundary($encodedText, $maxLength) + { + $foundSplitPos = false; + $lookBack = 3; + while (!$foundSplitPos) { + $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack); + $encodedCharPos = strpos($lastChunk, '='); + if (false !== $encodedCharPos) { + //Found start of encoded character byte within $lookBack block. + //Check the encoded byte value (the 2 chars after the '=') + $hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2); + $dec = hexdec($hex); + if ($dec < 128) { + //Single byte character. + //If the encoded char was found at pos 0, it will fit + //otherwise reduce maxLength to start of the encoded char + if ($encodedCharPos > 0) { + $maxLength -= $lookBack - $encodedCharPos; + } + $foundSplitPos = true; + } elseif ($dec >= 192) { + //First byte of a multi byte character + //Reduce maxLength to split at start of character + $maxLength -= $lookBack - $encodedCharPos; + $foundSplitPos = true; + } elseif ($dec < 192) { + //Middle byte of a multi byte character, look further back + $lookBack += 3; + } + } else { + //No encoded character found + $foundSplitPos = true; + } + } + + return $maxLength; + } + + /** + * Apply word wrapping to the message body. + * Wraps the message body to the number of chars set in the WordWrap property. + * You should only do this to plain-text bodies as wrapping HTML tags may break them. + * This is called automatically by createBody(), so you don't need to call it yourself. + */ + public function setWordWrap() + { + if ($this->WordWrap < 1) { + return; + } + + switch ($this->message_type) { + case 'alt': + case 'alt_inline': + case 'alt_attach': + case 'alt_inline_attach': + $this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap); + break; + default: + $this->Body = $this->wrapText($this->Body, $this->WordWrap); + break; + } + } + + /** + * Assemble message headers. + * + * @return string The assembled headers + */ + public function createHeader() + { + $result = ''; + + $result .= $this->headerLine('Date', '' === $this->MessageDate ? self::rfcDate() : $this->MessageDate); + + //The To header is created automatically by mail(), so needs to be omitted here + if ('mail' !== $this->Mailer) { + if ($this->SingleTo) { + foreach ($this->to as $toaddr) { + $this->SingleToArray[] = $this->addrFormat($toaddr); + } + } elseif (count($this->to) > 0) { + $result .= $this->addrAppend('To', $this->to); + } elseif (count($this->cc) === 0) { + $result .= $this->headerLine('To', 'undisclosed-recipients:;'); + } + } + $result .= $this->addrAppend('From', [[trim($this->From), $this->FromName]]); + + //sendmail and mail() extract Cc from the header before sending + if (count($this->cc) > 0) { + $result .= $this->addrAppend('Cc', $this->cc); + } + + //sendmail and mail() extract Bcc from the header before sending + if ( + ( + 'sendmail' === $this->Mailer || 'qmail' === $this->Mailer || 'mail' === $this->Mailer + ) + && count($this->bcc) > 0 + ) { + $result .= $this->addrAppend('Bcc', $this->bcc); + } + + if (count($this->ReplyTo) > 0) { + $result .= $this->addrAppend('Reply-To', $this->ReplyTo); + } + + //mail() sets the subject itself + if ('mail' !== $this->Mailer) { + $result .= $this->headerLine('Subject', $this->encodeHeader($this->secureHeader($this->Subject))); + } + + //Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4 + //https://tools.ietf.org/html/rfc5322#section-3.6.4 + if ('' !== $this->MessageID && preg_match('/^<.*@.*>$/', $this->MessageID)) { + $this->lastMessageID = $this->MessageID; + } else { + $this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname()); + } + $result .= $this->headerLine('Message-ID', $this->lastMessageID); + if (null !== $this->Priority) { + $result .= $this->headerLine('X-Priority', $this->Priority); + } + if ('' === $this->XMailer) { + $result .= $this->headerLine( + 'X-Mailer', + 'PHPMailer ' . self::VERSION . ' (https://github.com/PHPMailer/PHPMailer)' + ); + } else { + $myXmailer = trim($this->XMailer); + if ($myXmailer) { + $result .= $this->headerLine('X-Mailer', $myXmailer); + } + } + + if ('' !== $this->ConfirmReadingTo) { + $result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>'); + } + + //Add custom headers + foreach ($this->CustomHeader as $header) { + $result .= $this->headerLine( + trim($header[0]), + $this->encodeHeader(trim($header[1])) + ); + } + if (!$this->sign_key_file) { + $result .= $this->headerLine('MIME-Version', '1.0'); + $result .= $this->getMailMIME(); + } + + return $result; + } + + /** + * Get the message MIME type headers. + * + * @return string + */ + public function getMailMIME() + { + $result = ''; + $ismultipart = true; + switch ($this->message_type) { + case 'inline': + $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); + $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"'); + break; + case 'attach': + case 'inline_attach': + case 'alt_attach': + case 'alt_inline_attach': + $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_MIXED . ';'); + $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"'); + break; + case 'alt': + case 'alt_inline': + $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';'); + $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"'); + break; + default: + //Catches case 'plain': and case '': + $result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet); + $ismultipart = false; + break; + } + //RFC1341 part 5 says 7bit is assumed if not specified + if (static::ENCODING_7BIT !== $this->Encoding) { + //RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE + if ($ismultipart) { + if (static::ENCODING_8BIT === $this->Encoding) { + $result .= $this->headerLine('Content-Transfer-Encoding', static::ENCODING_8BIT); + } + //The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible + } else { + $result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding); + } + } + + return $result; + } + + /** + * Returns the whole MIME message. + * Includes complete headers and body. + * Only valid post preSend(). + * + * @see PHPMailer::preSend() + * + * @return string + */ + public function getSentMIMEMessage() + { + return static::stripTrailingWSP($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->uniqueid = $this->generateId(); + $this->boundary[1] = 'b1_' . $this->uniqueid; + $this->boundary[2] = 'b2_' . $this->uniqueid; + $this->boundary[3] = 'b3_' . $this->uniqueid; + + if ($this->sign_key_file) { + $body .= $this->getMailMIME() . static::$LE; + } + + $this->setWordWrap(); + + $bodyEncoding = $this->Encoding; + $bodyCharSet = $this->CharSet; + //Can we do a 7-bit downgrade? + if (static::ENCODING_8BIT === $bodyEncoding && !$this->has8bitChars($this->Body)) { + $bodyEncoding = static::ENCODING_7BIT; + //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit + $bodyCharSet = static::CHARSET_ASCII; + } + //If lines are too long, and we're not already using an encoding that will shorten them, + //change to quoted-printable transfer encoding for the body part only + if (static::ENCODING_BASE64 !== $this->Encoding && static::hasLineLongerThanMax($this->Body)) { + $bodyEncoding = static::ENCODING_QUOTED_PRINTABLE; + } + + $altBodyEncoding = $this->Encoding; + $altBodyCharSet = $this->CharSet; + //Can we do a 7-bit downgrade? + if (static::ENCODING_8BIT === $altBodyEncoding && !$this->has8bitChars($this->AltBody)) { + $altBodyEncoding = static::ENCODING_7BIT; + //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit + $altBodyCharSet = static::CHARSET_ASCII; + } + //If lines are too long, and we're not already using an encoding that will shorten them, + //change to quoted-printable transfer encoding for the alt body part only + if (static::ENCODING_BASE64 !== $altBodyEncoding && static::hasLineLongerThanMax($this->AltBody)) { + $altBodyEncoding = static::ENCODING_QUOTED_PRINTABLE; + } + //Use this as a preamble in all multipart message types + $mimepre = 'This is a multi-part message in MIME format.' . static::$LE . static::$LE; + switch ($this->message_type) { + case 'inline': + $body .= $mimepre; + $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + $body .= $this->attachAll('inline', $this->boundary[1]); + break; + case 'attach': + $body .= $mimepre; + $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + $body .= $this->attachAll('attachment', $this->boundary[1]); + break; + case 'inline_attach': + $body .= $mimepre; + $body .= $this->textLine('--' . $this->boundary[1]); + $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); + $body .= $this->textLine(' boundary="' . $this->boundary[2] . '";'); + $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"'); + $body .= static::$LE; + $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + $body .= $this->attachAll('inline', $this->boundary[2]); + $body .= static::$LE; + $body .= $this->attachAll('attachment', $this->boundary[1]); + break; + case 'alt': + $body .= $mimepre; + $body .= $this->getBoundary( + $this->boundary[1], + $altBodyCharSet, + static::CONTENT_TYPE_PLAINTEXT, + $altBodyEncoding + ); + $body .= $this->encodeString($this->AltBody, $altBodyEncoding); + $body .= static::$LE; + $body .= $this->getBoundary( + $this->boundary[1], + $bodyCharSet, + static::CONTENT_TYPE_TEXT_HTML, + $bodyEncoding + ); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + if (!empty($this->Ical)) { + $method = static::ICAL_METHOD_REQUEST; + foreach (static::$IcalMethods as $imethod) { + if (stripos($this->Ical, 'METHOD:' . $imethod) !== false) { + $method = $imethod; + break; + } + } + $body .= $this->getBoundary( + $this->boundary[1], + '', + static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method, + '' + ); + $body .= $this->encodeString($this->Ical, $this->Encoding); + $body .= static::$LE; + } + $body .= $this->endBoundary($this->boundary[1]); + break; + case 'alt_inline': + $body .= $mimepre; + $body .= $this->getBoundary( + $this->boundary[1], + $altBodyCharSet, + static::CONTENT_TYPE_PLAINTEXT, + $altBodyEncoding + ); + $body .= $this->encodeString($this->AltBody, $altBodyEncoding); + $body .= static::$LE; + $body .= $this->textLine('--' . $this->boundary[1]); + $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); + $body .= $this->textLine(' boundary="' . $this->boundary[2] . '";'); + $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"'); + $body .= static::$LE; + $body .= $this->getBoundary( + $this->boundary[2], + $bodyCharSet, + static::CONTENT_TYPE_TEXT_HTML, + $bodyEncoding + ); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + $body .= $this->attachAll('inline', $this->boundary[2]); + $body .= static::$LE; + $body .= $this->endBoundary($this->boundary[1]); + break; + case 'alt_attach': + $body .= $mimepre; + $body .= $this->textLine('--' . $this->boundary[1]); + $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';'); + $body .= $this->textLine(' boundary="' . $this->boundary[2] . '"'); + $body .= static::$LE; + $body .= $this->getBoundary( + $this->boundary[2], + $altBodyCharSet, + static::CONTENT_TYPE_PLAINTEXT, + $altBodyEncoding + ); + $body .= $this->encodeString($this->AltBody, $altBodyEncoding); + $body .= static::$LE; + $body .= $this->getBoundary( + $this->boundary[2], + $bodyCharSet, + static::CONTENT_TYPE_TEXT_HTML, + $bodyEncoding + ); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + if (!empty($this->Ical)) { + $method = static::ICAL_METHOD_REQUEST; + foreach (static::$IcalMethods as $imethod) { + if (stripos($this->Ical, 'METHOD:' . $imethod) !== false) { + $method = $imethod; + break; + } + } + $body .= $this->getBoundary( + $this->boundary[2], + '', + static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method, + '' + ); + $body .= $this->encodeString($this->Ical, $this->Encoding); + } + $body .= $this->endBoundary($this->boundary[2]); + $body .= static::$LE; + $body .= $this->attachAll('attachment', $this->boundary[1]); + break; + case 'alt_inline_attach': + $body .= $mimepre; + $body .= $this->textLine('--' . $this->boundary[1]); + $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';'); + $body .= $this->textLine(' boundary="' . $this->boundary[2] . '"'); + $body .= static::$LE; + $body .= $this->getBoundary( + $this->boundary[2], + $altBodyCharSet, + static::CONTENT_TYPE_PLAINTEXT, + $altBodyEncoding + ); + $body .= $this->encodeString($this->AltBody, $altBodyEncoding); + $body .= static::$LE; + $body .= $this->textLine('--' . $this->boundary[2]); + $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';'); + $body .= $this->textLine(' boundary="' . $this->boundary[3] . '";'); + $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"'); + $body .= static::$LE; + $body .= $this->getBoundary( + $this->boundary[3], + $bodyCharSet, + static::CONTENT_TYPE_TEXT_HTML, + $bodyEncoding + ); + $body .= $this->encodeString($this->Body, $bodyEncoding); + $body .= static::$LE; + $body .= $this->attachAll('inline', $this->boundary[3]); + $body .= static::$LE; + $body .= $this->endBoundary($this->boundary[2]); + $body .= static::$LE; + $body .= $this->attachAll('attachment', $this->boundary[1]); + break; + default: + //Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types + //Reset the `Encoding` property in case we changed it for line length reasons + $this->Encoding = $bodyEncoding; + $body .= $this->encodeString($this->Body, $this->Encoding); + break; + } + + if ($this->isError()) { + $body = ''; + if ($this->exceptions) { + throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL); + } + } elseif ($this->sign_key_file) { + try { + if (!defined('PKCS7_TEXT')) { + throw new Exception($this->lang('extension_missing') . 'openssl'); + } + + $file = tempnam(sys_get_temp_dir(), 'srcsign'); + $signed = tempnam(sys_get_temp_dir(), 'mailsign'); + file_put_contents($file, $body); + + //Workaround for PHP bug https://bugs.php.net/bug.php?id=69197 + if (empty($this->sign_extracerts_file)) { + $sign = @openssl_pkcs7_sign( + $file, + $signed, + 'file://' . realpath($this->sign_cert_file), + ['file://' . realpath($this->sign_key_file), $this->sign_key_pass], + [] + ); + } else { + $sign = @openssl_pkcs7_sign( + $file, + $signed, + 'file://' . realpath($this->sign_cert_file), + ['file://' . realpath($this->sign_key_file), $this->sign_key_pass], + [], + PKCS7_DETACHED, + $this->sign_extracerts_file + ); + } + + @unlink($file); + if ($sign) { + $body = file_get_contents($signed); + @unlink($signed); + //The message returned by openssl contains both headers and body, so need to split them up + $parts = explode("\n\n", $body, 2); + $this->MIMEHeader .= $parts[0] . static::$LE . static::$LE; + $body = $parts[1]; + } else { + @unlink($signed); + throw new Exception($this->lang('signing') . openssl_error_string()); + } + } catch (Exception $exc) { + $body = ''; + if ($this->exceptions) { + throw $exc; + } + } + } + + return $body; + } + + /** + * Return the start of a message boundary. + * + * @param string $boundary + * @param string $charSet + * @param string $contentType + * @param string $encoding + * + * @return string + */ + protected function getBoundary($boundary, $charSet, $contentType, $encoding) + { + $result = ''; + if ('' === $charSet) { + $charSet = $this->CharSet; + } + if ('' === $contentType) { + $contentType = $this->ContentType; + } + if ('' === $encoding) { + $encoding = $this->Encoding; + } + $result .= $this->textLine('--' . $boundary); + $result .= sprintf('Content-Type: %s; charset=%s', $contentType, $charSet); + $result .= static::$LE; + //RFC1341 part 5 says 7bit is assumed if not specified + if (static::ENCODING_7BIT !== $encoding) { + $result .= $this->headerLine('Content-Transfer-Encoding', $encoding); + } + $result .= static::$LE; + + return $result; + } + + /** + * Return the end of a message boundary. + * + * @param string $boundary + * + * @return string + */ + protected function endBoundary($boundary) + { + return static::$LE . '--' . $boundary . '--' . static::$LE; + } + + /** + * Set the message type. + * PHPMailer only supports some preset message types, not arbitrary MIME structures. + */ + protected function setMessageType() + { + $type = []; + if ($this->alternativeExists()) { + $type[] = 'alt'; + } + if ($this->inlineImageExists()) { + $type[] = 'inline'; + } + if ($this->attachmentExists()) { + $type[] = 'attach'; + } + $this->message_type = implode('_', $type); + if ('' === $this->message_type) { + //The 'plain' message_type refers to the message having a single body element, not that it is plain-text + $this->message_type = 'plain'; + } + } + + /** + * Format a header line. + * + * @param string $name + * @param string|int $value + * + * @return string + */ + public function headerLine($name, $value) + { + return $name . ': ' . $value . static::$LE; + } + + /** + * Return a formatted mail line. + * + * @param string $value + * + * @return string + */ + public function textLine($value) + { + return $value . static::$LE; + } + + /** + * Add an attachment from a path on the filesystem. + * Never use a user-supplied path to a file! + * Returns false if the file could not be found or read. + * Explicitly *does not* support passing URLs; PHPMailer is not an HTTP client. + * If you need to do that, fetch the resource yourself and pass it in via a local file or string. + * + * @param string $path Path to the attachment + * @param string $name Overrides the attachment name + * @param string $encoding File encoding (see $Encoding) + * @param string $type MIME type, e.g. `image/jpeg`; determined automatically from $path if not specified + * @param string $disposition Disposition to use + * + * @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 ("` =??[QB]??=`"). + $overhead = 8 + strlen($charset); + + if ('mail' === $this->Mailer) { + $maxlen = static::MAIL_MAX_LINE_LENGTH - $overhead; + } else { + $maxlen = static::MAX_LINE_LENGTH - $overhead; + } + + //Select the encoding that produces the shortest output and/or prevents corruption. + if ($matchcount > strlen($str) / 3) { + //More than 1/3 of the content needs encoding, use B-encode. + $encoding = 'B'; + } elseif ($matchcount > 0) { + //Less than 1/3 of the content needs encoding, use Q-encode. + $encoding = 'Q'; + } elseif (strlen($str) > $maxlen) { + //No encoding needed, but value exceeds max line length, use Q-encode to prevent corruption. + $encoding = 'Q'; + } else { + //No reformatting needed + $encoding = false; + } + + switch ($encoding) { + case 'B': + if ($this->hasMultiBytes($str)) { + //Use a custom function which correctly encodes and wraps long + //multibyte strings without breaking lines within a character + $encoded = $this->base64EncodeWrapMB($str, "\n"); + } else { + $encoded = base64_encode($str); + $maxlen -= $maxlen % 4; + $encoded = trim(chunk_split($encoded, $maxlen, "\n")); + } + $encoded = preg_replace('/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded); + break; + case 'Q': + $encoded = $this->encodeQ($str, $position); + $encoded = $this->wrapText($encoded, $maxlen, true); + $encoded = str_replace('=' . static::$LE, "\n", trim($encoded)); + $encoded = preg_replace('/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded); + break; + default: + return $str; + } + + return trim(static::normalizeBreaks($encoded)); + } + + /** + * Check if a string contains multi-byte characters. + * + * @param string $str multi-byte text to wrap encode + * + * @return bool + */ + public function hasMultiBytes($str) + { + if (function_exists('mb_strlen')) { + return strlen($str) > mb_strlen($str, $this->CharSet); + } + + //Assume no multibytes (we can't handle without mbstring functions anyway) + return false; + } + + /** + * Does a string contain any 8-bit chars (in any charset)? + * + * @param string $text + * + * @return bool + */ + public function has8bitChars($text) + { + return (bool) preg_match('/[\x80-\xFF]/', $text); + } + + /** + * Encode and wrap long multibyte strings for mail headers + * without breaking lines within a character. + * Adapted from a function by paravoid. + * + * @see http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283 + * + * @param string $str multi-byte text to wrap encode + * @param string $linebreak string to use as linefeed/end-of-line + * + * @return string + */ + public function base64EncodeWrapMB($str, $linebreak = null) + { + $start = '=?' . $this->CharSet . '?B?'; + $end = '?='; + $encoded = ''; + if (null === $linebreak) { + $linebreak = static::$LE; + } + + $mb_length = mb_strlen($str, $this->CharSet); + //Each line must have length <= 75, including $start and $end + $length = 75 - strlen($start) - strlen($end); + //Average multi-byte ratio + $ratio = $mb_length / strlen($str); + //Base64 has a 4:3 ratio + $avgLength = floor($length * $ratio * .75); + + $offset = 0; + for ($i = 0; $i < $mb_length; $i += $offset) { + $lookBack = 0; + do { + $offset = $avgLength - $lookBack; + $chunk = mb_substr($str, $i, $offset, $this->CharSet); + $chunk = base64_encode($chunk); + ++$lookBack; + } while (strlen($chunk) > $length); + $encoded .= $chunk . $linebreak; + } + + //Chomp the last linefeed + return substr($encoded, 0, -strlen($linebreak)); + } + + /** + * Encode a string in quoted-printable format. + * According to RFC2045 section 6.7. + * + * @param string $string The text to encode + * + * @return string + */ + public function encodeQP($string) + { + return static::normalizeBreaks(quoted_printable_encode($string)); + } + + /** + * Encode a string using Q encoding. + * + * @see http://tools.ietf.org/html/rfc2047#section-4.2 + * + * @param string $str the text to encode + * @param string $position Where the text is going to be used, see the RFC for what that means + * + * @return string + */ + public function encodeQ($str, $position = 'text') + { + //There should not be any EOL in the string + $pattern = ''; + $encoded = str_replace(["\r", "\n"], '', $str); + switch (strtolower($position)) { + case 'phrase': + //RFC 2047 section 5.3 + $pattern = '^A-Za-z0-9!*+\/ -'; + break; + /* + * RFC 2047 section 5.2. + * Build $pattern without including delimiters and [] + */ + /* @noinspection PhpMissingBreakStatementInspection */ + case 'comment': + $pattern = '\(\)"'; + /* Intentional fall through */ + case 'text': + default: + //RFC 2047 section 5.1 + //Replace every high ascii, control, =, ? and _ characters + $pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern; + break; + } + $matches = []; + if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) { + //If the string contains an '=', make sure it's the first thing we replace + //so as to avoid double-encoding + $eqkey = array_search('=', $matches[0], true); + if (false !== $eqkey) { + unset($matches[0][$eqkey]); + array_unshift($matches[0], '='); + } + foreach (array_unique($matches[0]) as $char) { + $encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded); + } + } + //Replace spaces with _ (more readable than =20) + //RFC 2047 section 4.2(2) + return str_replace(' ', '_', $encoded); + } + + /** + * Add a string or binary attachment (non-filesystem). + * This method can be used to attach ascii or binary data, + * such as a BLOB record from a database. + * + * @param string $string String attachment data + * @param string $filename Name of the attachment + * @param string $encoding File encoding (see $Encoding) + * @param string $type File extension (MIME) type + * @param string $disposition Disposition to use + * + * @throws Exception + * + * @return bool True on successfully adding an attachment + */ + public function addStringAttachment( + $string, + $filename, + $encoding = self::ENCODING_BASE64, + $type = '', + $disposition = 'attachment' + ) { + try { + //If a MIME type is not specified, try to work it out from the file name + if ('' === $type) { + $type = static::filenameToType($filename); + } + + if (!$this->validateEncoding($encoding)) { + throw new Exception($this->lang('encoding') . $encoding); + } + + //Append to $attachment array + $this->attachment[] = [ + 0 => $string, + 1 => $filename, + 2 => static::mb_pathinfo($filename, PATHINFO_BASENAME), + 3 => $encoding, + 4 => $type, + 5 => true, //isStringAttachment + 6 => $disposition, + 7 => 0, + ]; + } catch (Exception $exc) { + $this->setError($exc->getMessage()); + $this->edebug($exc->getMessage()); + if ($this->exceptions) { + throw $exc; + } + + return false; + } + + return true; + } + + /** + * Add an embedded (inline) attachment from a file. + * This can include images, sounds, and just about any other document type. + * These differ from 'regular' attachments in that they are intended to be + * displayed inline with the message, not just attached for download. + * This is used in HTML messages that embed the images + * the HTML refers to using the $cid value. + * Never use a user-supplied path to a file! + * + * @param string $path Path to the attachment + * @param string $cid Content ID of the attachment; Use this to reference + * the content when using an embedded image in HTML + * @param string $name Overrides the attachment name + * @param string $encoding File encoding (see $Encoding) + * @param string $type File MIME type + * @param string $disposition Disposition to use + * + * @throws Exception + * + * @return bool True on successfully adding an attachment + */ + public function addEmbeddedImage( + $path, + $cid, + $name = '', + $encoding = self::ENCODING_BASE64, + $type = '', + $disposition = 'inline' + ) { + try { + if (!static::fileIsAccessible($path)) { + throw new Exception($this->lang('file_access') . $path, self::STOP_CONTINUE); + } + + //If a MIME type is not specified, try to work it out from the file name + if ('' === $type) { + $type = static::filenameToType($path); + } + + if (!$this->validateEncoding($encoding)) { + throw new Exception($this->lang('encoding') . $encoding); + } + + $filename = (string) static::mb_pathinfo($path, PATHINFO_BASENAME); + if ('' === $name) { + $name = $filename; + } + + //Append to $attachment array + $this->attachment[] = [ + 0 => $path, + 1 => $filename, + 2 => $name, + 3 => $encoding, + 4 => $type, + 5 => false, //isStringAttachment + 6 => $disposition, + 7 => $cid, + ]; + } catch (Exception $exc) { + $this->setError($exc->getMessage()); + $this->edebug($exc->getMessage()); + if ($this->exceptions) { + throw $exc; + } + + return false; + } + + return true; + } + + /** + * Add an embedded stringified attachment. + * This can include images, sounds, and just about any other document type. + * If your filename doesn't contain an extension, be sure to set the $type to an appropriate MIME type. + * + * @param string $string The attachment binary data + * @param string $cid Content ID of the attachment; Use this to reference + * the content when using an embedded image in HTML + * @param string $name A filename for the attachment. If this contains an extension, + * PHPMailer will attempt to set a MIME type for the attachment. + * For example 'file.jpg' would get an 'image/jpeg' MIME type. + * @param string $encoding File encoding (see $Encoding), defaults to 'base64' + * @param string $type MIME type - will be used in preference to any automatically derived type + * @param string $disposition Disposition to use + * + * @throws Exception + * + * @return bool True on successfully adding an attachment + */ + public function addStringEmbeddedImage( + $string, + $cid, + $name = '', + $encoding = self::ENCODING_BASE64, + $type = '', + $disposition = 'inline' + ) { + try { + //If a MIME type is not specified, try to work it out from the name + if ('' === $type && !empty($name)) { + $type = static::filenameToType($name); + } + + if (!$this->validateEncoding($encoding)) { + throw new Exception($this->lang('encoding') . $encoding); + } + + //Append to $attachment array + $this->attachment[] = [ + 0 => $string, + 1 => $name, + 2 => $name, + 3 => $encoding, + 4 => $type, + 5 => true, //isStringAttachment + 6 => $disposition, + 7 => $cid, + ]; + } catch (Exception $exc) { + $this->setError($exc->getMessage()); + $this->edebug($exc->getMessage()); + if ($this->exceptions) { + throw $exc; + } + + return false; + } + + return true; + } + + /** + * Validate encodings. + * + * @param string $encoding + * + * @return bool + */ + protected function validateEncoding($encoding) + { + return in_array( + $encoding, + [ + self::ENCODING_7BIT, + self::ENCODING_QUOTED_PRINTABLE, + self::ENCODING_BASE64, + self::ENCODING_8BIT, + self::ENCODING_BINARY, + ], + true + ); + } + + /** + * Check if an embedded attachment is present with this cid. + * + * @param string $cid + * + * @return bool + */ + protected function cidExists($cid) + { + foreach ($this->attachment as $attachment) { + if ('inline' === $attachment[6] && $cid === $attachment[7]) { + return true; + } + } + + return false; + } + + /** + * Check if an inline attachment is present. + * + * @return bool + */ + public function inlineImageExists() + { + foreach ($this->attachment as $attachment) { + if ('inline' === $attachment[6]) { + return true; + } + } + + return false; + } + + /** + * Check if an attachment (non-inline) is present. + * + * @return bool + */ + public function attachmentExists() + { + foreach ($this->attachment as $attachment) { + if ('attachment' === $attachment[6]) { + return true; + } + } + + return false; + } + + /** + * Check if this message has an alternative body set. + * + * @return bool + */ + public function alternativeExists() + { + return !empty($this->AltBody); + } + + /** + * Clear queued addresses of given kind. + * + * @param string $kind 'to', 'cc', or 'bcc' + */ + public function clearQueuedAddresses($kind) + { + $this->RecipientsQueue = array_filter( + $this->RecipientsQueue, + static function ($params) use ($kind) { + return $params[0] !== $kind; + } + ); + } + + /** + * Clear all To recipients. + */ + public function clearAddresses() + { + foreach ($this->to as $to) { + unset($this->all_recipients[strtolower($to[0])]); + } + $this->to = []; + $this->clearQueuedAddresses('to'); + } + + /** + * Clear all CC recipients. + */ + public function clearCCs() + { + foreach ($this->cc as $cc) { + unset($this->all_recipients[strtolower($cc[0])]); + } + $this->cc = []; + $this->clearQueuedAddresses('cc'); + } + + /** + * Clear all BCC recipients. + */ + public function clearBCCs() + { + foreach ($this->bcc as $bcc) { + unset($this->all_recipients[strtolower($bcc[0])]); + } + $this->bcc = []; + $this->clearQueuedAddresses('bcc'); + } + + /** + * Clear all ReplyTo recipients. + */ + public function clearReplyTos() + { + $this->ReplyTo = []; + $this->ReplyToQueue = []; + } + + /** + * Clear all recipient types. + */ + public function clearAllRecipients() + { + $this->to = []; + $this->cc = []; + $this->bcc = []; + $this->all_recipients = []; + $this->RecipientsQueue = []; + } + + /** + * Clear all filesystem, string, and binary attachments. + */ + public function clearAttachments() + { + $this->attachment = []; + } + + /** + * Clear all custom headers. + */ + public function clearCustomHeaders() + { + $this->CustomHeader = []; + } + + /** + * Add an error message to the error container. + * + * @param string $msg + */ + protected function setError($msg) + { + ++$this->error_count; + if ('smtp' === $this->Mailer && null !== $this->smtp) { + $lasterror = $this->smtp->getError(); + if (!empty($lasterror['error'])) { + $msg .= $this->lang('smtp_error') . $lasterror['error']; + if (!empty($lasterror['detail'])) { + $msg .= ' Detail: ' . $lasterror['detail']; + } + if (!empty($lasterror['smtp_code'])) { + $msg .= ' SMTP code: ' . $lasterror['smtp_code']; + } + if (!empty($lasterror['smtp_code_ex'])) { + $msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex']; + } + } + } + $this->ErrorInfo = $msg; + } + + /** + * Return an RFC 822 formatted date. + * + * @return string + */ + public static function rfcDate() + { + //Set the time zone to whatever the default is to avoid 500 errors + //Will default to UTC if it's not set properly in php.ini + date_default_timezone_set(@date_default_timezone_get()); + + return date('D, j M Y H:i:s O'); + } + + /** + * Get the server hostname. + * Returns 'localhost.localdomain' if unknown. + * + * @return string + */ + protected function serverHostname() + { + $result = ''; + if (!empty($this->Hostname)) { + $result = $this->Hostname; + } elseif (isset($_SERVER) && array_key_exists('SERVER_NAME', $_SERVER)) { + $result = $_SERVER['SERVER_NAME']; + } elseif (function_exists('gethostname') && gethostname() !== false) { + $result = gethostname(); + } elseif (php_uname('n') !== false) { + $result = php_uname('n'); + } + if (!static::isValidHost($result)) { + return 'localhost.localdomain'; + } + + return $result; + } + + /** + * Validate whether a string contains a valid value to use as a hostname or IP address. + * IPv6 addresses must include [], e.g. `[::1]`, not just `::1`. + * + * @param string $host The host name or IP address to check + * + * @return bool + */ + public static function isValidHost($host) + { + //Simple syntax limits + if ( + empty($host) + || !is_string($host) + || strlen($host) > 256 + || !preg_match('/^([a-zA-Z\d.-]*|\[[a-fA-F\d:]+])$/', $host) + ) { + return false; + } + //Looks like a bracketed IPv6 address + if (strlen($host) > 2 && substr($host, 0, 1) === '[' && substr($host, -1, 1) === ']') { + return filter_var(substr($host, 1, -1), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== false; + } + //If removing all the dots results in a numeric string, it must be an IPv4 address. + //Need to check this first because otherwise things like `999.0.0.0` are considered valid host names + if (is_numeric(str_replace('.', '', $host))) { + //Is it a valid IPv4 address? + return filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false; + } + if (filter_var('http://' . $host, FILTER_VALIDATE_URL) !== false) { + //Is it a syntactically valid hostname? + return true; + } + + return false; + } + + /** + * Get an error message in the current language. + * + * @param string $key + * + * @return string + */ + protected function lang($key) + { + if (count($this->language) < 1) { + $this->setLanguage(); //Set the default language + } + + if (array_key_exists($key, $this->language)) { + if ('smtp_connect_failed' === $key) { + //Include a link to troubleshooting docs on SMTP connection failure. + //This is by far the biggest cause of support questions + //but it's usually not PHPMailer's fault. + return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting'; + } + + return $this->language[$key]; + } + + //Return the key as a fallback + return $key; + } + + /** + * Check if an error occurred. + * + * @return bool True if an error did occur + */ + public function isError() + { + return $this->error_count > 0; + } + + /** + * Add a custom header. + * $name value can be overloaded to contain + * both header name and value (name:value). + * + * @param string $name Custom header name + * @param string|null $value Header value + * + * @throws Exception + */ + public function addCustomHeader($name, $value = null) + { + if (null === $value && strpos($name, ':') !== false) { + //Value passed in as name:value + list($name, $value) = explode(':', $name, 2); + } + $name = trim($name); + $value = trim($value); + //Ensure name is not empty, and that neither name nor value contain line breaks + if (empty($name) || strpbrk($name . $value, "\r\n") !== false) { + if ($this->exceptions) { + throw new Exception('Invalid header name or value'); + } + + return false; + } + $this->CustomHeader[] = [$name, $value]; + + return true; + } + + /** + * Returns all custom headers. + * + * @return array + */ + public function getCustomHeaders() + { + return $this->CustomHeader; + } + + /** + * Create a message body from an HTML string. + * Automatically inlines images and creates a plain-text version by converting the HTML, + * overwriting any existing values in Body and AltBody. + * Do not source $message content from user input! + * $basedir is prepended when handling relative URLs, e.g. 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 = '', $advanced = false) + { + preg_match_all('/(? 1 && '/' !== substr($basedir, -1)) { + //Ensure $basedir has a trailing / + $basedir .= '/'; + } + foreach ($images[2] as $imgindex => $url) { + //Convert data URIs into embedded images + //e.g. "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" + $match = []; + if (preg_match('#^data:(image/(?:jpe?g|gif|png));?(base64)?,(.+)#', $url, $match)) { + if (count($match) === 4 && static::ENCODING_BASE64 === $match[2]) { + $data = base64_decode($match[3]); + } elseif ('' === $match[2]) { + $data = rawurldecode($match[3]); + } else { + //Not recognised so leave it alone + continue; + } + //Hash the decoded data, not the URL, so that the same data-URI image used in multiple places + //will only be embedded once, even if it used a different encoding + $cid = substr(hash('sha256', $data), 0, 32) . '@phpmailer.0'; //RFC2392 S 2 + + if (!$this->cidExists($cid)) { + $this->addStringEmbeddedImage( + $data, + $cid, + 'embed' . $imgindex, + static::ENCODING_BASE64, + $match[1] + ); + } + $message = str_replace( + $images[0][$imgindex], + $images[1][$imgindex] . '="cid:' . $cid . '"', + $message + ); + continue; + } + if ( + //Only process relative URLs if a basedir is provided (i.e. no absolute local paths) + !empty($basedir) + //Ignore URLs containing parent dir traversal (..) + && (strpos($url, '..') === false) + //Do not change urls that are already inline images + && 0 !== strpos($url, 'cid:') + //Do not change absolute URLs, including anonymous protocol + && !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url) + ) { + $filename = static::mb_pathinfo($url, PATHINFO_BASENAME); + $directory = dirname($url); + if ('.' === $directory) { + $directory = ''; + } + //RFC2392 S 2 + $cid = substr(hash('sha256', $url), 0, 32) . '@phpmailer.0'; + if (strlen($basedir) > 1 && '/' !== substr($basedir, -1)) { + $basedir .= '/'; + } + if (strlen($directory) > 1 && '/' !== substr($directory, -1)) { + $directory .= '/'; + } + if ( + $this->addEmbeddedImage( + $basedir . $directory . $filename, + $cid, + $filename, + static::ENCODING_BASE64, + static::_mime_types((string) static::mb_pathinfo($filename, PATHINFO_EXTENSION)) + ) + ) { + $message = preg_replace( + '/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui', + $images[1][$imgindex] . '="cid:' . $cid . '"', + $message + ); + } + } + } + } + $this->isHTML(); + //Convert all message body line breaks to LE, makes quoted-printable encoding work much better + $this->Body = static::normalizeBreaks($message); + $this->AltBody = static::normalizeBreaks($this->html2text($message, $advanced)); + if (!$this->alternativeExists()) { + $this->AltBody = 'This is an HTML-only message. To view it, activate HTML in your email application.' + . static::$LE; + } + + return $this->Body; + } + + /** + * Convert an HTML string into plain text. + * This is used by msgHTML(). + * Note - older versions of this function used a bundled advanced converter + * which was removed for license reasons in #232. + * Example usage: + * + * ```php + * //Use default conversion + * $plain = $mail->html2text($html); + * //Use your own custom converter + * $plain = $mail->html2text($html, function($html) { + * $converter = new MyHtml2text($html); + * return $converter->get_text(); + * }); + * ``` + * + * @param string $html The HTML text to convert + * @param bool|callable $advanced Any boolean value to use the internal converter, + * or provide your own callable for custom conversion + * + * @return string + */ + public function html2text($html, $advanced = false) + { + if (is_callable($advanced)) { + return call_user_func($advanced, $html); + } + + return html_entity_decode( + trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))), + ENT_QUOTES, + $this->CharSet + ); + } + + /** + * Get the MIME type for a file extension. + * + * @param string $ext File extension + * + * @return string MIME type of file + */ + public static function _mime_types($ext = '') + { + $mimes = [ + 'xl' => 'application/excel', + 'js' => 'application/javascript', + 'hqx' => 'application/mac-binhex40', + 'cpt' => 'application/mac-compactpro', + 'bin' => 'application/macbinary', + 'doc' => 'application/msword', + 'word' => 'application/msword', + 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', + 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template', + 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template', + 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow', + 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', + 'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide', + 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', + 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template', + 'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12', + 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12', + 'class' => 'application/octet-stream', + 'dll' => 'application/octet-stream', + 'dms' => 'application/octet-stream', + 'exe' => 'application/octet-stream', + 'lha' => 'application/octet-stream', + 'lzh' => 'application/octet-stream', + 'psd' => 'application/octet-stream', + 'sea' => 'application/octet-stream', + 'so' => 'application/octet-stream', + 'oda' => 'application/oda', + 'pdf' => 'application/pdf', + 'ai' => 'application/postscript', + 'eps' => 'application/postscript', + 'ps' => 'application/postscript', + 'smi' => 'application/smil', + 'smil' => 'application/smil', + 'mif' => 'application/vnd.mif', + 'xls' => 'application/vnd.ms-excel', + 'ppt' => 'application/vnd.ms-powerpoint', + 'wbxml' => 'application/vnd.wap.wbxml', + 'wmlc' => 'application/vnd.wap.wmlc', + 'dcr' => 'application/x-director', + 'dir' => 'application/x-director', + 'dxr' => 'application/x-director', + 'dvi' => 'application/x-dvi', + 'gtar' => 'application/x-gtar', + 'php3' => 'application/x-httpd-php', + 'php4' => 'application/x-httpd-php', + 'php' => 'application/x-httpd-php', + 'phtml' => 'application/x-httpd-php', + 'phps' => 'application/x-httpd-php-source', + 'swf' => 'application/x-shockwave-flash', + 'sit' => 'application/x-stuffit', + 'tar' => 'application/x-tar', + 'tgz' => 'application/x-tar', + 'xht' => 'application/xhtml+xml', + 'xhtml' => 'application/xhtml+xml', + 'zip' => 'application/zip', + 'mid' => 'audio/midi', + 'midi' => 'audio/midi', + 'mp2' => 'audio/mpeg', + 'mp3' => 'audio/mpeg', + 'm4a' => 'audio/mp4', + 'mpga' => 'audio/mpeg', + 'aif' => 'audio/x-aiff', + 'aifc' => 'audio/x-aiff', + 'aiff' => 'audio/x-aiff', + 'ram' => 'audio/x-pn-realaudio', + 'rm' => 'audio/x-pn-realaudio', + 'rpm' => 'audio/x-pn-realaudio-plugin', + 'ra' => 'audio/x-realaudio', + 'wav' => 'audio/x-wav', + 'mka' => 'audio/x-matroska', + 'bmp' => 'image/bmp', + 'gif' => 'image/gif', + 'jpeg' => 'image/jpeg', + 'jpe' => 'image/jpeg', + 'jpg' => 'image/jpeg', + 'png' => 'image/png', + 'tiff' => 'image/tiff', + 'tif' => 'image/tiff', + 'webp' => 'image/webp', + 'avif' => 'image/avif', + 'heif' => 'image/heif', + 'heifs' => 'image/heif-sequence', + 'heic' => 'image/heic', + 'heics' => 'image/heic-sequence', + 'eml' => 'message/rfc822', + 'css' => 'text/css', + 'html' => 'text/html', + 'htm' => 'text/html', + 'shtml' => 'text/html', + 'log' => 'text/plain', + 'text' => 'text/plain', + 'txt' => 'text/plain', + 'rtx' => 'text/richtext', + 'rtf' => 'text/rtf', + 'vcf' => 'text/vcard', + 'vcard' => 'text/vcard', + 'ics' => 'text/calendar', + 'xml' => 'text/xml', + 'xsl' => 'text/xml', + 'wmv' => 'video/x-ms-wmv', + 'mpeg' => 'video/mpeg', + 'mpe' => 'video/mpeg', + 'mpg' => 'video/mpeg', + 'mp4' => 'video/mp4', + 'm4v' => 'video/mp4', + 'mov' => 'video/quicktime', + 'qt' => 'video/quicktime', + 'rv' => 'video/vnd.rn-realvideo', + 'avi' => 'video/x-msvideo', + 'movie' => 'video/x-sgi-movie', + 'webm' => 'video/webm', + 'mkv' => 'video/x-matroska', + ]; + $ext = strtolower($ext); + if (array_key_exists($ext, $mimes)) { + return $mimes[$ext]; + } + + return 'application/octet-stream'; + } + + /** + * Map a file name to a MIME type. + * Defaults to 'application/octet-stream', i.e.. arbitrary binary data. + * + * @param string $filename A file name or full path, does not need to exist as a file + * + * @return string + */ + public static function filenameToType($filename) + { + //In case the path is a URL, strip any query string before getting extension + $qpos = strpos($filename, '?'); + if (false !== $qpos) { + $filename = substr($filename, 0, $qpos); + } + $ext = static::mb_pathinfo($filename, PATHINFO_EXTENSION); + + return static::_mime_types($ext); + } + + /** + * Multi-byte-safe pathinfo replacement. + * Drop-in replacement for pathinfo(), but multibyte- and cross-platform-safe. + * + * @see http://www.php.net/manual/en/function.pathinfo.php#107461 + * + * @param string $path A filename or path, does not need to exist as a file + * @param int|string $options Either a PATHINFO_* constant, + * or a string name to return only the specified piece + * + * @return string|array + */ + public static function mb_pathinfo($path, $options = null) + { + $ret = ['dirname' => '', 'basename' => '', 'extension' => '', 'filename' => '']; + $pathinfo = []; + if (preg_match('#^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^.\\\\/]+?)|))[\\\\/.]*$#m', $path, $pathinfo)) { + if (array_key_exists(1, $pathinfo)) { + $ret['dirname'] = $pathinfo[1]; + } + if (array_key_exists(2, $pathinfo)) { + $ret['basename'] = $pathinfo[2]; + } + if (array_key_exists(5, $pathinfo)) { + $ret['extension'] = $pathinfo[5]; + } + if (array_key_exists(3, $pathinfo)) { + $ret['filename'] = $pathinfo[3]; + } + } + switch ($options) { + case PATHINFO_DIRNAME: + case 'dirname': + return $ret['dirname']; + case PATHINFO_BASENAME: + case 'basename': + return $ret['basename']; + case PATHINFO_EXTENSION: + case 'extension': + return $ret['extension']; + case PATHINFO_FILENAME: + case 'filename': + return $ret['filename']; + default: + return $ret; + } + } + + /** + * Set or reset instance properties. + * You should avoid this function - it's more verbose, less efficient, more error-prone and + * harder to debug than setting properties directly. + * Usage Example: + * `$mail->set('SMTPSecure', static::ENCRYPTION_STARTTLS);` + * is the same as: + * `$mail->SMTPSecure = static::ENCRYPTION_STARTTLS;`. + * + * @param string $name The property name to set + * @param mixed $value The value to set the property to + * + * @return bool + */ + public function set($name, $value = '') + { + if (property_exists($this, $name)) { + $this->$name = $value; + + return true; + } + $this->setError($this->lang('variable_set') . $name); + + return false; + } + + /** + * Strip newlines to prevent header injection. + * + * @param string $str + * + * @return string + */ + public function secureHeader($str) + { + return trim(str_replace(["\r", "\n"], '', $str)); + } + + /** + * Normalize line breaks in a string. + * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format. + * Defaults to CRLF (for message bodies) and preserves consecutive breaks. + * + * @param string $text + * @param string $breaktype What kind of line break to use; defaults to static::$LE + * + * @return string + */ + public static function normalizeBreaks($text, $breaktype = null) + { + if (null === $breaktype) { + $breaktype = static::$LE; + } + //Normalise to \n + $text = str_replace([self::CRLF, "\r"], "\n", $text); + //Now convert LE as needed + if ("\n" !== $breaktype) { + $text = str_replace("\n", $breaktype, $text); + } + + return $text; + } + + /** + * Remove trailing breaks from a string. + * + * @param string $text + * + * @return string The text to remove breaks from + */ + public static function stripTrailingWSP($text) + { + return rtrim($text, " \r\n\t"); + } + + /** + * Return the current line break format string. + * + * @return string + */ + public static function getLE() + { + return static::$LE; + } + + /** + * Set the line break format string, e.g. "\r\n". + * + * @param string $le + */ + protected static function setLE($le) + { + static::$LE = $le; + } + + /** + * Set the public and private key files and password for S/MIME signing. + * + * @param string $cert_filename + * @param string $key_filename + * @param string $key_pass Password for private key + * @param string $extracerts_filename Optional path to chain certificate + */ + public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '') + { + $this->sign_cert_file = $cert_filename; + $this->sign_key_file = $key_filename; + $this->sign_key_pass = $key_pass; + $this->sign_extracerts_file = $extracerts_filename; + } + + /** + * Quoted-Printable-encode a DKIM header. + * + * @param string $txt + * + * @return string + */ + public function DKIM_QP($txt) + { + $line = ''; + $len = strlen($txt); + for ($i = 0; $i < $len; ++$i) { + $ord = ord($txt[$i]); + if (((0x21 <= $ord) && ($ord <= 0x3A)) || $ord === 0x3C || ((0x3E <= $ord) && ($ord <= 0x7E))) { + $line .= $txt[$i]; + } else { + $line .= '=' . sprintf('%02X', $ord); + } + } + + return $line; + } + + /** + * Generate a DKIM signature. + * + * @param string $signHeader + * + * @throws Exception + * + * @return string The DKIM signature value + */ + public function DKIM_Sign($signHeader) + { + if (!defined('PKCS7_TEXT')) { + if ($this->exceptions) { + throw new Exception($this->lang('extension_missing') . 'openssl'); + } + + return ''; + } + $privKeyStr = !empty($this->DKIM_private_string) ? + $this->DKIM_private_string : + file_get_contents($this->DKIM_private); + if ('' !== $this->DKIM_passphrase) { + $privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase); + } else { + $privKey = openssl_pkey_get_private($privKeyStr); + } + if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) { + if (\PHP_MAJOR_VERSION < 8) { + openssl_pkey_free($privKey); + } + + return base64_encode($signature); + } + if (\PHP_MAJOR_VERSION < 8) { + openssl_pkey_free($privKey); + } + + return ''; + } + + /** + * Generate a DKIM canonicalization header. + * Uses the 'relaxed' algorithm from RFC6376 section 3.4.2. + * Canonicalized headers should *always* use CRLF, regardless of mailer setting. + * + * @see https://tools.ietf.org/html/rfc6376#section-3.4.2 + * + * @param string $signHeader Header + * + * @return string + */ + public function DKIM_HeaderC($signHeader) + { + //Normalize breaks to CRLF (regardless of the mailer) + $signHeader = static::normalizeBreaks($signHeader, self::CRLF); + //Unfold header lines + //Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]` + //@see https://tools.ietf.org/html/rfc5322#section-2.2 + //That means this may break if you do something daft like put vertical tabs in your headers. + $signHeader = preg_replace('/\r\n[ \t]+/', ' ', $signHeader); + //Break headers out into an array + $lines = explode(self::CRLF, $signHeader); + foreach ($lines as $key => $line) { + //If the header is missing a :, skip it as it's invalid + //This is likely to happen because the explode() above will also split + //on the trailing LE, leaving an empty line + if (strpos($line, ':') === false) { + continue; + } + list($heading, $value) = explode(':', $line, 2); + //Lower-case header name + $heading = strtolower($heading); + //Collapse white space within the value, also convert WSP to space + $value = preg_replace('/[ \t]+/', ' ', $value); + //RFC6376 is slightly unclear here - it says to delete space at the *end* of each value + //But then says to delete space before and after the colon. + //Net result is the same as trimming both ends of the value. + //By elimination, the same applies to the field name + $lines[$key] = trim($heading, " \t") . ':' . trim($value, " \t"); + } + + return implode(self::CRLF, $lines); + } + + /** + * Generate a DKIM canonicalization body. + * Uses the 'simple' algorithm from RFC6376 section 3.4.3. + * Canonicalized bodies should *always* use CRLF, regardless of mailer setting. + * + * @see https://tools.ietf.org/html/rfc6376#section-3.4.3 + * + * @param string $body Message Body + * + * @return string + */ + public function DKIM_BodyC($body) + { + if (empty($body)) { + return self::CRLF; + } + //Normalize line endings to CRLF + $body = static::normalizeBreaks($body, self::CRLF); + + //Reduce multiple trailing line breaks to a single one + return static::stripTrailingWSP($body) . self::CRLF; + } + + /** + * Create the DKIM header and body in a new message header. + * + * @param string $headers_line Header lines + * @param string $subject Subject + * @param string $body Body + * + * @throws Exception + * + * @return string + */ + public function DKIM_Add($headers_line, $subject, $body) + { + $DKIMsignatureType = 'rsa-sha256'; //Signature & hash algorithms + $DKIMcanonicalization = 'relaxed/simple'; //Canonicalization methods of header & body + $DKIMquery = 'dns/txt'; //Query method + $DKIMtime = time(); + //Always sign these headers without being asked + //Recommended list from https://tools.ietf.org/html/rfc6376#section-5.4.1 + $autoSignHeaders = [ + 'from', + 'to', + 'cc', + 'date', + 'subject', + 'reply-to', + 'message-id', + 'content-type', + 'mime-version', + 'x-mailer', + ]; + if (stripos($headers_line, 'Subject') === false) { + $headers_line .= 'Subject: ' . $subject . static::$LE; + } + $headerLines = explode(static::$LE, $headers_line); + $currentHeaderLabel = ''; + $currentHeaderValue = ''; + $parsedHeaders = []; + $headerLineIndex = 0; + $headerLineCount = count($headerLines); + foreach ($headerLines as $headerLine) { + $matches = []; + if (preg_match('/^([^ \t]*?)(?::[ \t]*)(.*)$/', $headerLine, $matches)) { + if ($currentHeaderLabel !== '') { + //We were previously in another header; This is the start of a new header, so save the previous one + $parsedHeaders[] = ['label' => $currentHeaderLabel, 'value' => $currentHeaderValue]; + } + $currentHeaderLabel = $matches[1]; + $currentHeaderValue = $matches[2]; + } elseif (preg_match('/^[ \t]+(.*)$/', $headerLine, $matches)) { + //This is a folded continuation of the current header, so unfold it + $currentHeaderValue .= ' ' . $matches[1]; + } + ++$headerLineIndex; + if ($headerLineIndex >= $headerLineCount) { + //This was the last line, so finish off this header + $parsedHeaders[] = ['label' => $currentHeaderLabel, 'value' => $currentHeaderValue]; + } + } + $copiedHeaders = []; + $headersToSignKeys = []; + $headersToSign = []; + foreach ($parsedHeaders as $header) { + //Is this header one that must be included in the DKIM signature? + if (in_array(strtolower($header['label']), $autoSignHeaders, true)) { + $headersToSignKeys[] = $header['label']; + $headersToSign[] = $header['label'] . ': ' . $header['value']; + if ($this->DKIM_copyHeaderFields) { + $copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC + str_replace('|', '=7C', $this->DKIM_QP($header['value'])); + } + continue; + } + //Is this an extra custom header we've been asked to sign? + if (in_array($header['label'], $this->DKIM_extraHeaders, true)) { + //Find its value in custom headers + foreach ($this->CustomHeader as $customHeader) { + if ($customHeader[0] === $header['label']) { + $headersToSignKeys[] = $header['label']; + $headersToSign[] = $header['label'] . ': ' . $header['value']; + if ($this->DKIM_copyHeaderFields) { + $copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC + str_replace('|', '=7C', $this->DKIM_QP($header['value'])); + } + //Skip straight to the next header + continue 2; + } + } + } + } + $copiedHeaderFields = ''; + if ($this->DKIM_copyHeaderFields && count($copiedHeaders) > 0) { + //Assemble a DKIM 'z' tag + $copiedHeaderFields = ' z='; + $first = true; + foreach ($copiedHeaders as $copiedHeader) { + if (!$first) { + $copiedHeaderFields .= static::$LE . ' |'; + } + //Fold long values + if (strlen($copiedHeader) > self::STD_LINE_LENGTH - 3) { + $copiedHeaderFields .= substr( + chunk_split($copiedHeader, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS), + 0, + -strlen(static::$LE . self::FWS) + ); + } else { + $copiedHeaderFields .= $copiedHeader; + } + $first = false; + } + $copiedHeaderFields .= ';' . static::$LE; + } + $headerKeys = ' h=' . implode(':', $headersToSignKeys) . ';' . static::$LE; + $headerValues = implode(static::$LE, $headersToSign); + $body = $this->DKIM_BodyC($body); + //Base64 of packed binary SHA-256 hash of body + $DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); + $ident = ''; + if ('' !== $this->DKIM_identity) { + $ident = ' i=' . $this->DKIM_identity . ';' . static::$LE; + } + //The DKIM-Signature header is included in the signature *except for* the value of the `b` tag + //which is appended after calculating the signature + //https://tools.ietf.org/html/rfc6376#section-3.5 + $dkimSignatureHeader = 'DKIM-Signature: v=1;' . + ' d=' . $this->DKIM_domain . ';' . + ' s=' . $this->DKIM_selector . ';' . static::$LE . + ' a=' . $DKIMsignatureType . ';' . + ' q=' . $DKIMquery . ';' . + ' t=' . $DKIMtime . ';' . + ' c=' . $DKIMcanonicalization . ';' . static::$LE . + $headerKeys . + $ident . + $copiedHeaderFields . + ' bh=' . $DKIMb64 . ';' . static::$LE . + ' b='; + //Canonicalize the set of headers + $canonicalizedHeaders = $this->DKIM_HeaderC( + $headerValues . static::$LE . $dkimSignatureHeader + ); + $signature = $this->DKIM_Sign($canonicalizedHeaders); + $signature = trim(chunk_split($signature, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS)); + + return static::normalizeBreaks($dkimSignatureHeader . $signature); + } + + /** + * Detect if a string contains a line longer than the maximum line length + * allowed by RFC 2822 section 2.1.1. + * + * @param string $str + * + * @return bool + */ + public static function hasLineLongerThanMax($str) + { + return (bool) preg_match('/^(.{' . (self::MAX_LINE_LENGTH + strlen(static::$LE)) . ',})/m', $str); + } + + /** + * If a string contains any "special" characters, double-quote the name, + * and escape any double quotes with a backslash. + * + * @param string $str + * + * @return string + * + * @see RFC822 3.4.1 + */ + public static function quotedString($str) + { + if (preg_match('/[ ()<>@,;:"\/\[\]?=]/', $str)) { + //If the string contains any of these chars, it must be double-quoted + //and any double quotes must be escaped with a backslash + return '"' . str_replace('"', '\\"', $str) . '"'; + } + + //Return the string untouched, it doesn't need quoting + return $str; + } + + /** + * Allows for public read access to 'to' property. + * Before the send() call, queued addresses (i.e. with IDN) are not yet included. + * + * @return array + */ + public function getToAddresses() + { + return $this->to; + } + + /** + * Allows for public read access to 'cc' property. + * Before the send() call, queued addresses (i.e. with IDN) are not yet included. + * + * @return array + */ + public function getCcAddresses() + { + return $this->cc; + } + + /** + * Allows for public read access to 'bcc' property. + * Before the send() call, queued addresses (i.e. with IDN) are not yet included. + * + * @return array + */ + public function getBccAddresses() + { + return $this->bcc; + } + + /** + * Allows for public read access to 'ReplyTo' property. + * Before the send() call, queued addresses (i.e. with IDN) are not yet included. + * + * @return array + */ + public function getReplyToAddresses() + { + return $this->ReplyTo; + } + + /** + * Allows for public read access to 'all_recipients' property. + * Before the send() call, queued addresses (i.e. with IDN) are not yet included. + * + * @return array + */ + public function getAllRecipientAddresses() + { + return $this->all_recipients; + } + + /** + * Perform a callback. + * + * @param bool $isSent + * @param array $to + * @param array $cc + * @param array $bcc + * @param string $subject + * @param string $body + * @param string $from + * @param array $extra + */ + protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from, $extra) + { + if (!empty($this->action_function) && is_callable($this->action_function)) { + call_user_func($this->action_function, $isSent, $to, $cc, $bcc, $subject, $body, $from, $extra); + } + } + + /** + * Get the OAuth instance. + * + * @return OAuth + */ + public function getOAuth() + { + return $this->oauth; + } + + /** + * Set an OAuth instance. + */ + public function setOAuth(OAuth $oauth) + { + $this->oauth = $oauth; + } +}