From 7fe640bb471785fe5ec2bf08ae7cace72a1b2aa9 Mon Sep 17 00:00:00 2001
From: Kijin Sung <kijin@kijinsung.com>
Date: Wed, 8 Apr 2020 00:11:20 +0900
Subject: [PATCH] Re-add mail transport to SwiftMailer

---
 .../lib/classes/Swift/MailTransport.php       |  47 +++
 .../classes/Swift/Transport/MailTransport.php | 294 ++++++++++++++++++
 2 files changed, 341 insertions(+)
 create mode 100644 vendor/swiftmailer/swiftmailer/lib/classes/Swift/MailTransport.php
 create mode 100644 vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/MailTransport.php

diff --git a/vendor/swiftmailer/swiftmailer/lib/classes/Swift/MailTransport.php b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/MailTransport.php
new file mode 100644
index 000000000..18556989a
--- /dev/null
+++ b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/MailTransport.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Sends Messages using the mail() function.
+ *
+ * @author Chris Corbyn
+ *
+ * @deprecated since 5.4.5 (to be removed in 6.0)
+ */
+class Swift_MailTransport extends Swift_Transport_MailTransport
+{
+    /**
+     * Create a new MailTransport, optionally specifying $extraParams.
+     *
+     * @param string $extraParams
+     */
+    public function __construct($extraParams = '-f%s')
+    {
+        call_user_func_array(
+            array($this, 'Swift_Transport_MailTransport::__construct'),
+            Swift_DependencyContainer::getInstance()
+                ->createDependenciesFor('transport.mail')
+            );
+
+        $this->setExtraParams($extraParams);
+    }
+
+    /**
+     * Create a new MailTransport instance.
+     *
+     * @param string $extraParams To be passed to mail()
+     *
+     * @return self
+     */
+    public static function newInstance($extraParams = '-f%s')
+    {
+        return new self($extraParams);
+    }
+}
diff --git a/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/MailTransport.php b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/MailTransport.php
new file mode 100644
index 000000000..55e932384
--- /dev/null
+++ b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/MailTransport.php
@@ -0,0 +1,294 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Sends Messages using the mail() function.
+ *
+ * It is advised that users do not use this transport if at all possible
+ * since a number of plugin features cannot be used in conjunction with this
+ * transport due to the internal interface in PHP itself.
+ *
+ * The level of error reporting with this transport is incredibly weak, again
+ * due to limitations of PHP's internal mail() function.  You'll get an
+ * all-or-nothing result from sending.
+ *
+ * @author Chris Corbyn
+ *
+ * @deprecated since 5.4.5 (to be removed in 6.0)
+ */
+class Swift_Transport_MailTransport implements Swift_Transport
+{
+    /** Additional parameters to pass to mail() */
+    private $_extraParams = '-f%s';
+
+    /**
+     * Create a new MailTransport with the $log.
+     */
+    public function __construct()
+    {
+        
+    }
+
+    /**
+     * Not used.
+     */
+    public function isStarted()
+    {
+        return false;
+    }
+
+    /**
+     * Not used.
+     */
+    public function start()
+    {
+    }
+
+    /**
+     * Not used.
+     */
+    public function stop()
+    {
+    }
+
+    /**
+     * Not used.
+     */
+    public function ping()
+    {
+    }
+
+    /**
+     * Set the additional parameters used on the mail() function.
+     *
+     * This string is formatted for sprintf() where %s is the sender address.
+     *
+     * @param string $params
+     *
+     * @return $this
+     */
+    public function setExtraParams($params)
+    {
+        $this->_extraParams = $params;
+
+        return $this;
+    }
+
+    /**
+     * Get the additional parameters used on the mail() function.
+     *
+     * This string is formatted for sprintf() where %s is the sender address.
+     *
+     * @return string
+     */
+    public function getExtraParams()
+    {
+        return $this->_extraParams;
+    }
+
+    /**
+     * Send the given Message.
+     *
+     * Recipient/sender data will be retrieved from the Message API.
+     * The return value is the number of recipients who were accepted for delivery.
+     *
+     * @param Swift_Mime_Message $message
+     * @param string[]           $failedRecipients An array of failures by-reference
+     *
+     * @return int
+     */
+    public function send(Swift_Mime_SimpleMessage $message, &$failedRecipients = null)
+    {
+        $failedRecipients = (array) $failedRecipients;
+
+        $count = (
+            count((array) $message->getTo())
+            + count((array) $message->getCc())
+            + count((array) $message->getBcc())
+            );
+
+        $toHeader = $message->getHeaders()->get('To');
+        $subjectHeader = $message->getHeaders()->get('Subject');
+
+        if (0 === $count) {
+            $this->_throwException(new Swift_TransportException('Cannot send message without a recipient'));
+        }
+        $to = $toHeader ? $toHeader->getFieldBody() : '';
+        $subject = $subjectHeader ? $subjectHeader->getFieldBody() : '';
+
+        $reversePath = $this->_getReversePath($message);
+
+        // Remove headers that would otherwise be duplicated
+        $message->getHeaders()->remove('To');
+        $message->getHeaders()->remove('Subject');
+
+        $messageStr = $message->toString();
+
+        if ($toHeader) {
+            $message->getHeaders()->set($toHeader);
+        }
+        $message->getHeaders()->set($subjectHeader);
+
+        // Separate headers from body
+        if (false !== $endHeaders = strpos($messageStr, "\r\n\r\n")) {
+            $headers = substr($messageStr, 0, $endHeaders)."\r\n"; //Keep last EOL
+            $body = substr($messageStr, $endHeaders + 4);
+        } else {
+            $headers = $messageStr."\r\n";
+            $body = '';
+        }
+
+        unset($messageStr);
+
+        if ("\r\n" != PHP_EOL) {
+            // Non-windows (not using SMTP)
+            $headers = str_replace("\r\n", PHP_EOL, $headers);
+            $subject = str_replace("\r\n", PHP_EOL, $subject);
+            $body = str_replace("\r\n", PHP_EOL, $body);
+            $to = str_replace("\r\n", PHP_EOL, $to);
+        } else {
+            // Windows, using SMTP
+            $headers = str_replace("\r\n.", "\r\n..", $headers);
+            $subject = str_replace("\r\n.", "\r\n..", $subject);
+            $body = str_replace("\r\n.", "\r\n..", $body);
+            $to = str_replace("\r\n.", "\r\n..", $to);
+        }
+
+        if ($this->mail($to, $subject, $body, $headers, $this->_formatExtraParams($this->_extraParams, $reversePath))) {
+            if ($evt) {
+                $evt->setResult(Swift_Events_SendEvent::RESULT_SUCCESS);
+                $evt->setFailedRecipients($failedRecipients);
+            }
+        } else {
+            $failedRecipients = array_merge(
+                $failedRecipients,
+                array_keys((array) $message->getTo()),
+                array_keys((array) $message->getCc()),
+                array_keys((array) $message->getBcc())
+                );
+
+            if ($evt) {
+                $evt->setResult(Swift_Events_SendEvent::RESULT_FAILED);
+                $evt->setFailedRecipients($failedRecipients);
+            }
+
+            $message->generateId();
+
+            $count = 0;
+        }
+
+        return $count;
+    }
+
+    /**
+     * Register a plugin.
+     *
+     * @param Swift_Events_EventListener $plugin
+     */
+    public function registerPlugin(Swift_Events_EventListener $plugin)
+    {
+        
+    }
+
+    /** Throw a TransportException, first sending it to any listeners */
+    protected function _throwException(Swift_TransportException $e)
+    {
+		throw $e;
+    }
+
+    /**
+     * Send mail via the mail() function.
+     *
+     * This method takes the same arguments as PHP mail().
+     *
+     * @param string $to
+     * @param string $subject
+     * @param string $body
+     * @param string $headers
+     * @param string $extraParams
+     *
+     * @return bool
+     */
+    public function mail($to, $subject, $body, $headers = null, $extraParams = null)
+    {
+        return @mail($to, $subject, $body, $headers, $extraParams);
+    }
+	
+    /** Determine the best-use reverse path for this message */
+    private function _getReversePath(Swift_Mime_SimpleMessage $message)
+    {
+        $return = $message->getReturnPath();
+        $sender = $message->getSender();
+        $from = $message->getFrom();
+        $path = null;
+        if (!empty($return)) {
+            $path = $return;
+        } elseif (!empty($sender)) {
+            $keys = array_keys($sender);
+            $path = array_shift($keys);
+        } elseif (!empty($from)) {
+            $keys = array_keys($from);
+            $path = array_shift($keys);
+        }
+
+        return $path;
+    }
+
+    /**
+     * Fix CVE-2016-10074 by disallowing potentially unsafe shell characters.
+     *
+     * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows.
+     *
+     * @param string $string The string to be validated
+     *
+     * @return bool
+     */
+    private function _isShellSafe($string)
+    {
+        // Future-proof
+        if (escapeshellcmd($string) !== $string || !in_array(escapeshellarg($string), array("'$string'", "\"$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;
+    }
+
+    /**
+     * Return php mail extra params to use for invoker->mail.
+     *
+     * @param $extraParams
+     * @param $reversePath
+     *
+     * @return string|null
+     */
+    private function _formatExtraParams($extraParams, $reversePath)
+    {
+        if (false !== strpos($extraParams, '-f%s')) {
+            if (empty($reversePath) || false === $this->_isShellSafe($reversePath)) {
+                $extraParams = str_replace('-f%s', '', $extraParams);
+            } else {
+                $extraParams = sprintf($extraParams, $reversePath);
+            }
+        }
+
+        return !empty($extraParams) ? $extraParams : null;
+    }
+}