Updates PHPMailer to 6.1.6 (#3024)

* Update PHPMailer to 6.1.6

Fixes a security issue in PHPMailer 6.1.5 and earlier

* Remove .DS_Store

lib/PHPMailer/PHPMailer/PHPMailer.php

@@ -745,7 +745,7 @@ class PHPMailer
      *
      * @var string
      */
-    const VERSION = '6.1.5';
+    const VERSION = '6.1.6';
 
     /**
      * Error severity: message only, continue processing.
@@ -2086,6 +2086,7 @@ class PHPMailer
             'se' => 'sv',
             'rs' => 'sr',
             'tg' => 'tl',
+            'am' => 'hy',
         ];
 
         if (isset($renamed_langcodes[$langcode])) {
@@ -2606,7 +2607,7 @@ class PHPMailer
             $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;
+        $mimepre = 'This is a multi-part message in MIME format.' . static::$LE . static::$LE;
         switch ($this->message_type) {
             case 'inline':
                 $body .= $mimepre;
@@ -3063,9 +3064,9 @@ class PHPMailer
                 //Only include a filename property if we have one
                 if (!empty($name)) {
                     $mime[] = sprintf(
-                        'Content-Type: %s; name="%s"%s',
+                        'Content-Type: %s; name=%s%s',
                         $type,
-                        $this->encodeHeader($this->secureHeader($name)),
+                        static::quotedString($this->encodeHeader($this->secureHeader($name))),
                         static::$LE
                     );
                 } else {
@@ -3085,24 +3086,14 @@ class PHPMailer
                     $mime[] = 'Content-ID: <' . $this->encodeHeader($this->secureHeader($cid)) . '>' . static::$LE;
                 }
 
-                // If a filename contains any of these chars, it should be quoted,
-                // but not otherwise: RFC2183 & RFC2045 5.1
-                // Fixes a warning in IETF's msglint MIME checker
-                // Allow for bypassing the Content-Disposition header totally
+                // Allow for bypassing the Content-Disposition header
                 if (!empty($disposition)) {
                     $encoded_name = $this->encodeHeader($this->secureHeader($name));
-                    if (preg_match('/[ ()<>@,;:"\/\[\]?=]/', $encoded_name)) {
-                        $mime[] = sprintf(
-                            'Content-Disposition: %s; filename="%s"%s',
-                            $disposition,
-                            $encoded_name,
-                            static::$LE . static::$LE
-                        );
-                    } elseif (!empty($encoded_name)) {
+                    if (!empty($encoded_name)) {
                         $mime[] = sprintf(
                             'Content-Disposition: %s; filename=%s%s',
                             $disposition,
-                            $encoded_name,
+                            static::quotedString($encoded_name),
                             static::$LE . static::$LE
                         );
                     } else {
@@ -3162,6 +3153,7 @@ class PHPMailer
             if ($this->exceptions) {
                 throw $exc;
             }
+
             return '';
         }
     }
@@ -4726,6 +4718,28 @@ class PHPMailer
         return (bool) preg_match('/^(.{' . (self::MAX_LINE_LENGTH + strlen(static::$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.

lib/PHPMailer/PHPMailer/SMTP.php

@@ -34,7 +34,7 @@ class SMTP
      *
      * @var string
      */
-    const VERSION = '6.1.5';
+    const VERSION = '6.1.6';
 
     /**
      * SMTP line break constant.
@@ -1168,7 +1168,7 @@ class SMTP
             //Must pass vars in here as params are by reference
             if (!stream_select($selR, $selW, $selW, $this->Timelimit)) {
                 $this->edebug(
-                    'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
+                    'SMTP -> get_lines(): select timed-out in (' . $this->Timelimit . ' sec)',
                     self::DEBUG_LOWLEVEL
                 );
                 break;
@@ -1187,7 +1187,7 @@ class SMTP
             $info = stream_get_meta_data($this->smtp_conn);
             if ($info['timed_out']) {
                 $this->edebug(
-                    'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
+                    'SMTP -> get_lines(): stream timed-out (' . $this->Timeout . ' sec)',
                     self::DEBUG_LOWLEVEL
                 );
                 break;