doc/dev/plugins/email/classes/Email.php

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<?php
namespace Grav\Plugin\Email;
use Grav\Common\Config\Config;
use Grav\Common\Grav;
use Grav\Common\Language\Language;
use Grav\Common\Markdown\Parsedown;
use Grav\Common\Twig\Twig;
use Grav\Framework\Form\Interfaces\FormInterface;
use \Monolog\Logger;
use \Monolog\Handler\StreamHandler;
class Email
{
/**
* @var \Swift_Transport
*/
protected $mailer;
/**
* @var \Swift_Plugins_LoggerPlugin
*/
protected $logger;
protected $queue_path;
/**
* Returns true if emails have been enabled in the system.
*
* @return bool
*/
public static function enabled()
{
return Grav::instance()['config']->get('plugins.email.mailer.engine') !== 'none';
}
/**
* Returns true if debugging on emails has been enabled.
*
* @return bool
*/
public static function debug()
{
return Grav::instance()['config']->get('plugins.email.debug') == 'true';
}
/**
* Creates an email message.
*
* @param string $subject
* @param string $body
* @param string $contentType
* @param string $charset
* @return \Swift_Message
*/
public function message($subject = null, $body = null, $contentType = null, $charset = null)
{
return new \Swift_Message($subject, $body, $contentType, $charset);
}
/**
* Creates an attachment.
*
* @param string $data
* @param string $filename
* @param string $contentType
* @return \Swift_Attachment
*/
public function attachment($data = null, $filename = null, $contentType = null)
{
return new \Swift_Attachment($data, $filename, $contentType);
}
/**
* Creates an embedded attachment.
*
* @param string $data
* @param string $filename
* @param string $contentType
* @return \Swift_EmbeddedFile
*/
public function embedded($data = null, $filename = null, $contentType = null)
{
return new \Swift_EmbeddedFile($data, $filename, $contentType);
}
/**
* Creates an image attachment.
*
* @param string $data
* @param string $filename
* @param string $contentType
* @return \Swift_Image
*/
public function image($data = null, $filename = null, $contentType = null)
{
return new \Swift_Image($data, $filename, $contentType);
}
/**
* Send email.
*
* @param \Swift_Message $message
* @param array|null $failedRecipients
* @return int
*/
public function send($message, &$failedRecipients = null)
{
$mailer = $this->getMailer();
$result = $mailer ? $mailer->send($message, $failedRecipients) : 0;
// Check if emails and debugging are both enabled.
if ($mailer && $this->debug()) {
$log = new Logger('email');
$locator = Grav::instance()['locator'];
$log_file = $locator->findResource('log://email.log', true, true);
$log->pushHandler(new StreamHandler($log_file, Logger::DEBUG));
// Append the SwiftMailer log to the log.
$log->addDebug($this->getLogs());
}
return $result;
}
/**
* Build e-mail message.
*
* @param array $params
* @param array $vars
* @return \Swift_Message
*/
public function buildMessage(array $params, array $vars = [])
{
/** @var Twig $twig */
$twig = Grav::instance()['twig'];
/** @var Config $config */
$config = Grav::instance()['config'];
/** @var Language $language */
$language = Grav::instance()['language'];
// Extend parameters with defaults.
$params += [
'bcc' => $config->get('plugins.email.bcc', []),
'body' => $config->get('plugins.email.body', '{% include "forms/data.html.twig" %}'),
'cc' => $config->get('plugins.email.cc', []),
'cc_name' => $config->get('plugins.email.cc_name'),
'charset' => $config->get('plugins.email.charset', 'utf-8'),
'from' => $config->get('plugins.email.from'),
'from_name' => $config->get('plugins.email.from_name'),
'content_type' => $config->get('plugins.email.content_type', 'text/html'),
'reply_to' => $config->get('plugins.email.reply_to', []),
'reply_to_name' => $config->get('plugins.email.reply_to_name'),
'subject' => !empty($vars['form']) && $vars['form'] instanceof FormInterface ? $vars['form']->page()->title() : null,
'to' => $config->get('plugins.email.to'),
'to_name' => $config->get('plugins.email.to_name'),
'process_markdown' => false,
'template' => false
];
// Create message object.
$message = $this->message();
if (!$params['to']) {
throw new \RuntimeException($language->translate('PLUGIN_EMAIL.PLEASE_CONFIGURE_A_TO_ADDRESS'));
}
if (!$params['from']) {
throw new \RuntimeException($language->translate('PLUGIN_EMAIL.PLEASE_CONFIGURE_A_FROM_ADDRESS'));
}
// make email configuration available to templates
$vars += [
'email' => $params,
];
// Process parameters.
foreach ($params as $key => $value) {
switch ($key) {
case 'body':
if (is_string($value)) {
if (strpos($value, '{{') !== false || strpos($value, '{%') !== false) {
$body = $twig->processString($value, $vars);
} else {
$body = $value;
}
if ($params['process_markdown'] && $params['content_type'] === 'text/html') {
$parsedown = new Parsedown();
$body = $parsedown->text($body);
}
if ($params['template']) {
$body = $twig->processTemplate($params['template'], ['content' => $body] + $vars);
}
$content_type = !empty($params['content_type']) ? $twig->processString($params['content_type'], $vars) : null;
$charset = !empty($params['charset']) ? $twig->processString($params['charset'], $vars) : null;
$message->setBody($body, $content_type, $charset);
} elseif (is_array($value)) {
foreach ($value as $body_part) {
$body_part += [
'charset' => $params['charset'],
'content_type' => $params['content_type'],
];
$body = !empty($body_part['body']) ? $twig->processString($body_part['body'], $vars) : null;
if ($params['process_markdown'] && $body_part['content_type'] === 'text/html') {
$parsedown = new Parsedown();
$body = $parsedown->text($body);
}
if (isset($body_part['template'])) {
$body = $twig->processTemplate($body_part['template'], ['content' => $body] + $vars);
}
$content_type = !empty($body_part['content_type']) ? $twig->processString($body_part['content_type'], $vars) : null;
$charset = !empty($body_part['charset']) ? $twig->processString($body_part['charset'], $vars) : null;
if (!$message->getBody()) {
$message->setBody($body, $content_type, $charset);
}
else {
$message->addPart($body, $content_type, $charset);
}
}
}
break;
case 'subject':
$message->setSubject($twig->processString($language->translate($value), $vars));
break;
case 'to':
if (is_string($value) && !empty($params['to_name'])) {
$value = [
'mail' => $twig->processString($value, $vars),
'name' => $twig->processString($params['to_name'], $vars),
];
}
foreach ($this->parseAddressValue($value, $vars) as $address) {
$message->addTo($address->mail, $address->name);
}
break;
case 'cc':
if (is_string($value) && !empty($params['cc_name'])) {
$value = [
'mail' => $twig->processString($value, $vars),
'name' => $twig->processString($params['cc_name'], $vars),
];
}
foreach ($this->parseAddressValue($value, $vars) as $address) {
$message->addCc($address->mail, $address->name);
}
break;
case 'bcc':
foreach ($this->parseAddressValue($value, $vars) as $address) {
$message->addBcc($address->mail, $address->name);
}
break;
case 'from':
if (is_string($value) && !empty($params['from_name'])) {
$value = [
'mail' => $twig->processString($value, $vars),
'name' => $twig->processString($params['from_name'], $vars),
];
}
foreach ($this->parseAddressValue($value, $vars) as $address) {
$message->addFrom($address->mail, $address->name);
}
break;
case 'reply_to':
if (is_string($value) && !empty($params['reply_to_name'])) {
$value = [
'mail' => $twig->processString($value, $vars),
'name' => $twig->processString($params['reply_to_name'], $vars),
];
}
foreach ($this->parseAddressValue($value, $vars) as $address) {
$message->addReplyTo($address->mail, $address->name);
}
break;
}
}
return $message;
}
/**
* Return parsed e-mail address value.
*
* @param string|string[] $value
* @param array $vars
* @return array
*/
public function parseAddressValue($value, array $vars = [])
{
$parsed = [];
/** @var Twig $twig */
$twig = Grav::instance()['twig'];
// Single e-mail address string
if (is_string($value)) {
$parsed[] = (object) [
'mail' => $twig->processString($value, $vars),
'name' => null,
];
}
else {
// Cast value as array
$value = (array) $value;
// Single e-mail address array
if (!empty($value['mail'])) {
$parsed[] = (object) [
'mail' => $twig->processString($value['mail'], $vars),
'name' => !empty($value['name']) ? $twig->processString($value['name'], $vars) : NULL,
];
}
// Multiple addresses (either as strings or arrays)
elseif (!(empty($value['mail']) && !empty($value['name']))) {
foreach ($value as $y => $itemx) {
$addresses = $this->parseAddressValue($itemx, $vars);
if (($address = reset($addresses))) {
$parsed[] = $address;
}
}
}
}
return $parsed;
}
/**
* Return debugging logs if enabled
*
* @return string
*/
public function getLogs()
{
if ($this->debug()) {
return $this->logger->dump();
}
return '';
}
/**
* @internal
* @return null|\Swift_Mailer
*/
protected function getMailer()
{
if (!$this->enabled()) {
return null;
}
if (!$this->mailer) {
/** @var Config $config */
$config = Grav::instance()['config'];
$queue_enabled = $config->get('plugins.email.queue.enabled');
$transport = $queue_enabled === true ? $this->getQueue() : $this->getTransport();
// Create the Mailer using your created Transport
$this->mailer = new \Swift_Mailer($transport);
// Register the logger if we're debugging.
if ($this->debug()) {
$this->logger = new \Swift_Plugins_Loggers_ArrayLogger();
$this->mailer->registerPlugin(new \Swift_Plugins_LoggerPlugin($this->logger));
}
}
return $this->mailer;
}
protected static function getQueuePath()
{
$queue_path = Grav::instance()['locator']->findResource('user://data', true) . '/email-queue';
if (!file_exists($queue_path)) {
mkdir($queue_path);
}
return $queue_path;
}
protected static function getQueue()
{
$queue_path = static::getQueuePath();
$spool = new \Swift_FileSpool($queue_path);
$transport = new \Swift_SpoolTransport($spool);
return $transport;
}
public static function flushQueue()
{
$grav = Grav::instance();
$grav['debugger']->enabled(false);
$config = $grav['config']->get('plugins.email.queue');
try {
$queue = static::getQueue();
$spool = $queue->getSpool();
$spool->setMessageLimit($config['flush_msg_limit']);
$spool->setTimeLimit($config['flush_time_limit']);
$failures = [];
$result = $spool->flushQueue(static::getTransport(), $failures);
return $result . ' messages flushed from queue...';
} catch (\Exception $e) {
$grav['log']->error($e->getMessage());
return $e->getMessage();
}
}
public static function clearQueueFailures()
{
$grav = Grav::instance();
$grav['debugger']->enabled(false);
$preferences = \Swift_Preferences::getInstance();
$preferences->setTempDir(sys_get_temp_dir());
/** @var \Swift_Transport $transport */
$transport = static::getTransport();
if (!$transport->isStarted()) {
$transport->start();
}
$queue_path = static::getQueuePath();
foreach (new \GlobIterator($queue_path . '/*.sending') as $file) {
$final_message = $file->getPathname();
/** @var \Swift_Message $message */
$message = unserialize(file_get_contents($final_message));
echo(sprintf(
'Retrying "%s" to "%s"',
$message->getSubject(),
implode(', ', array_keys($message->getTo()))
) . "\n");
try {
$clean = static::cloneMessage($message);
$transport->send($clean);
echo("sent!\n");
// DOn't want to trip up any errors from sending too fast
sleep(1);
} catch (\Swift_TransportException $e) {
echo("ERROR: Send failed - deleting spooled message\n");
}
// Remove the file
unlink($final_message);
}
}
/**
* Clean copy a message
*
* @param \Swift_Message $message
*/
public static function cloneMessage($message)
{
$clean = new \Swift_Message();
$clean->setBoundary($message->getBoundary());
$clean->setBcc($message->getBcc());
$clean->setBody($message->getBody());
$clean->setCharset($message->getCharset());
$clean->setChildren($message->getChildren());
$clean->setContentType($message->getContentType());
$clean->setCc($message->getCc());
$clean->setDate($message->getDate());
$clean->setDescription($message->getDescription());
$clean->setEncoder($message->getEncoder());
$clean->setFormat($message->getFormat());
$clean->setFrom($message->getFrom());
$clean->setId($message->getId());
$clean->setMaxLineLength($message->getMaxLineLength());
$clean->setPriority($message->getPriority());
$clean->setReplyTo($message->getReplyTo());
$clean->setReturnPath($message->getReturnPath());
$clean->setSender($message->getSender());
$clean->setSubject($message->getSubject());
$clean->setTo($message->getTo());
$clean->setAuthMode($message->getAuthMode());
return $clean;
}
protected static function getTransport()
{
/** @var Config $config */
$config = Grav::instance()['config'];
$engine = $config->get('plugins.email.mailer.engine');
// Create the Transport and initialize it.
switch ($engine) {
case 'smtp':
$transport = new \Swift_SmtpTransport();
$options = $config->get('plugins.email.mailer.smtp');
if (!empty($options['server'])) {
$transport->setHost($options['server']);
}
if (!empty($options['port'])) {
$transport->setPort($options['port']);
}
if (!empty($options['encryption']) && $options['encryption'] !== 'none') {
$transport->setEncryption($options['encryption']);
}
if (!empty($options['user'])) {
$transport->setUsername($options['user']);
}
if (!empty($options['password'])) {
$transport->setPassword($options['password']);
}
if (!empty($options['auth_mode'])) {
$transport->setAuthMode($options['auth_mode']);
}
break;
case 'sendmail':
default:
$options = $config->get('plugins.email.mailer.sendmail');
$bin = !empty($options['bin']) ? $options['bin'] : '/usr/sbin/sendmail';
$transport = new \Swift_SendmailTransport($bin);
break;
}
return $transport;
}
}