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<title>[49034] trunk/src/wp-includes/PHPMailer: External Libraries: Upgrade PHPMailer to version 6.1.7.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/49034">49034</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/49034","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>desrosj</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-09-22 18:35:10 +0000 (Tue, 22 Sep 2020)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>External Libraries: Upgrade PHPMailer to version 6.1.7.
For a full list of changes in this update, see the PHPMailer GitHub: https://github.com/PHPMailer/PHPMailer/compare/v6.1.6...v6.1.7.
Props ayeshrajans, jrf.
Fixes <a href="https://core.trac.wordpress.org/ticket/51311">#51311</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesPHPMailerPHPMailerphp">trunk/src/wp-includes/PHPMailer/PHPMailer.php</a></li>
<li><a href="#trunksrcwpincludesPHPMailerSMTPphp">trunk/src/wp-includes/PHPMailer/SMTP.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesPHPMailerPHPMailerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/PHPMailer/PHPMailer.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/PHPMailer/PHPMailer.php 2020-09-22 12:32:39 UTC (rev 49033)
+++ trunk/src/wp-includes/PHPMailer/PHPMailer.php 2020-09-22 18:35:10 UTC (rev 49034)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -441,6 +441,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * Only supported in `mail` and `sendmail` transports, not in SMTP.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @var bool
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ *
+ * @deprecated 6.0.0 PHPMailer isn't a mailing list manager!
</ins><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> public $SingleTo = false;
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -745,7 +747,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @var string
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- const VERSION = '6.1.6';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ const VERSION = '6.1.7';
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * Error severity: message only, continue processing.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1307,7 +1309,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $patternselect = static::$validator;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> if (is_callable($patternselect)) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return $patternselect($address);
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func($patternselect, $address);
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321
</span><span class="cx" style="display: block; padding: 0 10px"> if (strpos($address, "\n") !== false || strpos($address, "\r") !== false) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1401,7 +1403,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> //Ignore IDE complaints about this line - method signature changed in PHP 5.4
</span><span class="cx" style="display: block; padding: 0 10px"> $errorcode = 0;
</span><span class="cx" style="display: block; padding: 0 10px"> if (defined('INTL_IDNA_VARIANT_UTS46')) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- // phpcs:ignore PHPCompatibility.ParameterValues.NewIDNVariantDefault.NotSet
</del><span class="cx" style="display: block; padding: 0 10px"> $punycode = idn_to_ascii($domain, $errorcode, INTL_IDNA_VARIANT_UTS46);
</span><span class="cx" style="display: block; padding: 0 10px"> } elseif (defined('INTL_IDNA_VARIANT_2003')) {
</span><span class="cx" style="display: block; padding: 0 10px"> // phpcs:ignore PHPCompatibility.Constants.RemovedConstants.intl_idna_variant_2003Deprecated
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2978,7 +2979,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> if ('' === $name) {
</span><span class="cx" style="display: block; padding: 0 10px"> $name = $filename;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
</del><span class="cx" style="display: block; padding: 0 10px"> if (!$this->validateEncoding($encoding)) {
</span><span class="cx" style="display: block; padding: 0 10px"> throw new Exception($this->lang('encoding') . $encoding);
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3993,7 +3993,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @param string $message HTML message string
</span><span class="cx" style="display: block; padding: 0 10px"> * @param string $basedir Absolute path to a base directory to prepend to relative paths to images
</span><span class="cx" style="display: block; padding: 0 10px"> * @param bool|callable $advanced Whether to use the internal HTML to text converter
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * or your own custom converter @return string $message The transformed message Body
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * or your own custom converter
+ * @return string The transformed message body
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @throws Exception
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -4117,7 +4118,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> public function html2text($html, $advanced = false)
</span><span class="cx" style="display: block; padding: 0 10px"> {
</span><span class="cx" style="display: block; padding: 0 10px"> if (is_callable($advanced)) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return $advanced($html);
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return call_user_func($advanced, $html);
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> return html_entity_decode(
</span></span></pre></div>
<a id="trunksrcwpincludesPHPMailerSMTPphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/PHPMailer/SMTP.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/PHPMailer/SMTP.php 2020-09-22 12:32:39 UTC (rev 49033)
+++ trunk/src/wp-includes/PHPMailer/SMTP.php 2020-09-22 18:35:10 UTC (rev 49034)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -34,7 +34,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @var string
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- const VERSION = '6.1.6';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ const VERSION = '6.1.7';
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px"> * SMTP line break constant.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -311,12 +311,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> public function connect($host, $port = null, $timeout = 30, $options = [])
</span><span class="cx" style="display: block; padding: 0 10px"> {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- static $streamok;
- //This is enabled by default since 5.0.0 but some providers disable it
- //Check this once and cache the result
- if (null === $streamok) {
- $streamok = function_exists('stream_socket_client');
- }
</del><span class="cx" style="display: block; padding: 0 10px"> // Clear errors to avoid confusion
</span><span class="cx" style="display: block; padding: 0 10px"> $this->setError('');
</span><span class="cx" style="display: block; padding: 0 10px"> // Make sure we are __not__ connected
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -335,12 +329,48 @@
</span><span class="cx" style="display: block; padding: 0 10px"> (count($options) > 0 ? var_export($options, true) : 'array()'),
</span><span class="cx" style="display: block; padding: 0 10px"> self::DEBUG_CONNECTION
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ $this->smtp_conn = $this->getSMTPConnection($host, $port, $timeout, $options);
+
+ if ($this->smtp_conn === false) {
+ //Error info already set inside `getSMTPConnection()`
+ return false;
+ }
+
+ $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
+
+ // Get any announcement
+ $this->last_reply = $this->get_lines();
+ $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
+
+ return true;
+ }
+
+ /**
+ * Create connection to the SMTP server.
+ *
+ * @param string $host SMTP server IP or host name
+ * @param int $port The port number to connect to
+ * @param int $timeout How long to wait for the connection to open
+ * @param array $options An array of options for stream_context_create()
+ *
+ * @return false|resource
+ */
+ protected function getSMTPConnection($host, $port = null, $timeout = 30, $options = [])
+ {
+ static $streamok;
+ //This is enabled by default since 5.0.0 but some providers disable it
+ //Check this once and cache the result
+ if (null === $streamok) {
+ $streamok = function_exists('stream_socket_client');
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $errno = 0;
</span><span class="cx" style="display: block; padding: 0 10px"> $errstr = '';
</span><span class="cx" style="display: block; padding: 0 10px"> if ($streamok) {
</span><span class="cx" style="display: block; padding: 0 10px"> $socket_context = stream_context_create($options);
</span><span class="cx" style="display: block; padding: 0 10px"> set_error_handler([$this, 'errorHandler']);
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->smtp_conn = stream_socket_client(
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $connection = stream_socket_client(
</ins><span class="cx" style="display: block; padding: 0 10px"> $host . ':' . $port,
</span><span class="cx" style="display: block; padding: 0 10px"> $errno,
</span><span class="cx" style="display: block; padding: 0 10px"> $errstr,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -356,7 +386,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> self::DEBUG_CONNECTION
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px"> set_error_handler([$this, 'errorHandler']);
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->smtp_conn = fsockopen(
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $connection = fsockopen(
</ins><span class="cx" style="display: block; padding: 0 10px"> $host,
</span><span class="cx" style="display: block; padding: 0 10px"> $port,
</span><span class="cx" style="display: block; padding: 0 10px"> $errno,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -365,8 +395,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px"> restore_error_handler();
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px"> // Verify we connected properly
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if (!is_resource($this->smtp_conn)) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if (!is_resource($connection)) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->setError(
</span><span class="cx" style="display: block; padding: 0 10px"> 'Failed to connect to server',
</span><span class="cx" style="display: block; padding: 0 10px"> '',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -381,22 +412,19 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> return false;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px"> // SMTP server can take longer to respond, give longer timeout for first read
</span><span class="cx" style="display: block; padding: 0 10px"> // Windows does not have support for this timeout function
</span><span class="cx" style="display: block; padding: 0 10px"> if (strpos(PHP_OS, 'WIN') !== 0) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- $max = (int) ini_get('max_execution_time');
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $max = (int)ini_get('max_execution_time');
</ins><span class="cx" style="display: block; padding: 0 10px"> // Don't bother if unlimited
</span><span class="cx" style="display: block; padding: 0 10px"> if (0 !== $max && $timeout > $max) {
</span><span class="cx" style="display: block; padding: 0 10px"> @set_time_limit($timeout);
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- stream_set_timeout($this->smtp_conn, $timeout, 0);
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ stream_set_timeout($connection, $timeout, 0);
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- // Get any announcement
- $announce = $this->get_lines();
- $this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER);
</del><span class="cx" style="display: block; padding: 0 10px">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- return true;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ return $connection;
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1166,13 +1194,40 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $selW = null;
</span><span class="cx" style="display: block; padding: 0 10px"> while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
</span><span class="cx" style="display: block; padding: 0 10px"> //Must pass vars in here as params are by reference
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if (!stream_select($selR, $selW, $selW, $this->Timelimit)) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ //solution for signals inspired by https://github.com/symfony/symfony/pull/6540
+ set_error_handler([$this, 'errorHandler']);
+ $n = stream_select($selR, $selW, $selW, $this->Timelimit);
+ restore_error_handler();
+
+ if ($n === false) {
+ $message = $this->getError()['detail'];
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->edebug(
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'SMTP -> get_lines(): select failed (' . $message . ')',
+ self::DEBUG_LOWLEVEL
+ );
+
+ //stream_select returns false when the `select` system call is interrupted by an incoming signal, try the select again
+ if (stripos($message, 'interrupted system call') !== false) {
+ $this->edebug(
+ 'SMTP -> get_lines(): retrying stream_select',
+ self::DEBUG_LOWLEVEL
+ );
+ $this->setError('');
+ continue;
+ }
+
+ break;
+ }
+
+ if (!$n) {
+ $this->edebug(
</ins><span class="cx" style="display: block; padding: 0 10px"> 'SMTP -> get_lines(): select timed-out in (' . $this->Timelimit . ' sec)',
</span><span class="cx" style="display: block; padding: 0 10px"> self::DEBUG_LOWLEVEL
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px"> break;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px"> //Deliberate noise suppression - errors are handled afterwards
</span><span class="cx" style="display: block; padding: 0 10px"> $str = @fgets($this->smtp_conn, self::MAX_REPLY_LENGTH);
</span><span class="cx" style="display: block; padding: 0 10px"> $this->edebug('SMTP INBOUND: "' . trim($str) . '"', self::DEBUG_LOWLEVEL);
</span></span></pre>
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