/**
* Send mail, similar to PHP's mail
*
* A true return value does not automatically mean that the user received the
* email successfully. It just only means that the method used was able to
* process the request without any errors.
*
* Using the two 'wp_mail_from' and 'wp_mail_from_name' hooks allow from
* creating a from address like 'Name <*****@*****.**>' when both are set. If
* just 'wp_mail_from' is set, then just the email address will be used with no
* name.
*
* The default content type is 'text/plain' which does not allow using HTML.
* However, you can set the content type of the email by using the
* 'wp_mail_content_type' filter.
*
* The default charset is based on the charset used on the blog. The charset can
* be set using the 'wp_mail_charset' filter.
*
* @since 1.2.1
* @uses apply_filters() Calls 'wp_mail' hook on an array of all of the parameters.
* @uses apply_filters() Calls 'wp_mail_from' hook to get the from email address.
* @uses apply_filters() Calls 'wp_mail_from_name' hook to get the from address name.
* @uses apply_filters() Calls 'wp_mail_content_type' hook to get the email content type.
* @uses apply_filters() Calls 'wp_mail_charset' hook to get the email charset
*
* @param string|array $to Array or comma-separated list of email addresses to send message.
* @param string $subject Email subject
* @param string $message Message contents
* @param string|array $headers Optional. Additional headers.
* @param string|array $attachments Optional. Files to attach.
* @return bool Whether the email contents were sent successfully.
*/
function wp_mail($to, $subject, $message, $headers = '', $attachments = array())
{
$header_is_object = false;
if ($headers instanceof SendGrid\Email) {
$header_is_object = true;
$mail = $headers;
// Compact the input, apply the filters, and extract them back out - empty header
extract(apply_filters('wp_mail', compact('to', 'subject', 'message', '', 'attachments')));
} else {
$mail = new SendGrid\Email();
// Compact the input, apply the filters, and extract them back out
extract(apply_filters('wp_mail', compact('to', 'subject', 'message', 'headers', 'attachments')));
}
$method = Sendgrid_Tools::get_send_method();
// prepare attachments
$attached_files = array();
if (!empty($attachments)) {
if (!is_array($attachments)) {
$pos = strpos(',', $attachments);
if (false !== $pos) {
$attachments = preg_split('/,\\s*/', $attachments);
} else {
$attachments = explode("\n", str_replace("\r\n", "\n", $attachments));
}
}
if (is_array($attachments)) {
foreach ($attachments as $attachment) {
if (file_exists($attachment)) {
$attached_files[] = $attachment;
}
}
}
}
// Headers
$cc = array();
$bcc = array();
$unique_args = array();
$from_name = $mail->getFromName();
$from_email = $mail->getFrom();
$replyto = $mail->getReplyTo();
if (false === $header_is_object) {
if (empty($headers)) {
$headers = array();
} else {
if (!is_array($headers)) {
// Explode the headers out, so this function can take both
// string headers and an array of headers.
$tempheaders = explode("\n", str_replace("\r\n", "\n", $headers));
} else {
$tempheaders = $headers;
}
$headers = array();
// If it's actually got contents
if (!empty($tempheaders)) {
// Iterate through the raw headers
foreach ((array) $tempheaders as $header) {
if (false === strpos($header, ':')) {
if (false !== stripos($header, 'boundary=')) {
$parts = preg_split('/boundary=/i', trim($header));
$boundary = trim(str_replace(array("'", '"'), '', $parts[1]));
}
continue;
}
// Explode them out
list($name, $content) = explode(':', trim($header), 2);
// Cleanup crew
$name = trim($name);
$content = trim($content);
switch (strtolower($name)) {
// Mainly for legacy -- process a From: header if it's there
case 'from':
if (false !== strpos($content, '<')) {
// So... making my life hard again?
$from_name = substr($content, 0, strpos($content, '<') - 1);
$from_name = str_replace('"', '', $from_name);
$from_name = trim($from_name);
$from_email = substr($content, strpos($content, '<') + 1);
$from_email = str_replace('>', '', $from_email);
$from_email = trim($from_email);
} else {
$from_email = trim($content);
}
break;
case 'content-type':
if (false !== strpos($content, ';')) {
list($type, $charset) = explode(';', $content);
$content_type = trim($type);
if (false !== stripos($charset, 'charset=')) {
$charset = trim(str_replace(array('charset=', '"'), '', $charset));
} elseif (false !== stripos($charset, 'boundary=')) {
$boundary = trim(str_replace(array('BOUNDARY=', 'boundary=', '"'), '', $charset));
$charset = '';
}
} else {
$content_type = trim($content);
}
break;
case 'cc':
$cc = array_merge((array) $cc, explode(',', $content));
foreach ($cc as $key => $recipient) {
$cc[$key] = trim($recipient);
}
break;
case 'bcc':
$bcc = array_merge((array) $bcc, explode(',', $content));
foreach ($bcc as $key => $recipient) {
$bcc[$key] = trim($recipient);
}
break;
case 'reply-to':
$replyto = $content;
break;
case 'unique-args':
if (false !== strpos($content, ';')) {
$unique_args = explode(';', $content);
} else {
$unique_args = (array) trim($content);
}
foreach ($unique_args as $unique_arg) {
if (false !== strpos($content, '=')) {
list($key, $val) = explode('=', $unique_arg);
$mail->addUniqueArg(trim($key), trim($val));
}
}
break;
case 'template':
$template_ok = Sendgrid_Tools::check_template(trim($content));
if ($template_ok) {
$mail->setTemplateId(trim($content));
} elseif (Sendgrid_Tools::get_template()) {
$mail->setTemplateId(Sendgrid_Tools::get_template());
}
break;
case 'categories':
$categories = explode(',', trim($content));
foreach ($categories as $category) {
$mail->addCategory($category);
}
break;
case 'x-smtpapi-to':
$xsmtpapi_tos = explode(',', trim($content));
foreach ($xsmtpapi_tos as $xsmtpapi_to) {
$mail->addSmtpapiTo($xsmtpapi_to);
}
break;
case 'substitutions':
if (false !== strpos($content, ';')) {
$substitutions = explode(';', $content);
} else {
$substitutions = (array) trim($content);
}
foreach ($substitutions as $substitution) {
if (false !== strpos($content, '=')) {
list($key, $val) = explode('=', $substitution);
$mail->addSubstitution('%' . trim($key) . '%', explode(',', trim($val)));
}
}
break;
case 'sections':
if (false !== strpos($content, ';')) {
$sections = explode(';', $content);
} else {
$sections = (array) trim($content);
}
foreach ($sections as $section) {
if (false !== strpos($content, '=')) {
list($key, $val) = explode('=', $section);
$mail->addSection('%' . trim($key) . '%', trim($val));
}
}
break;
default:
// Add it to our grand headers array
$headers[trim($name)] = trim($content);
break;
}
}
}
}
}
// From email and name
// If we don't have a name from the input headers
if (!isset($from_name) or !$from_name) {
$from_name = stripslashes(Sendgrid_Tools::get_from_name());
}
/* If we don't have an email from the input headers default to wordpress@$sitename
* Some hosts will block outgoing mail from this address if it doesn't exist but
* there's no easy alternative. Defaulting to admin_email might appear to be another
* option but some hosts may refuse to relay mail from an unknown domain. See
* http://trac.wordpress.org/ticket/5007.
*/
if (!isset($from_email)) {
$from_email = trim(Sendgrid_Tools::get_from_email());
if (!$from_email) {
// Get the site domain and get rid of www.
$sitename = strtolower($_SERVER['SERVER_NAME']);
if (!$sitename and 'smtp' == $method) {
return false;
}
if ('www.' == substr($sitename, 0, 4)) {
$sitename = substr($sitename, 4);
}
$from_email = "wordpress@{$sitename}";
}
}
// Plugin authors can override the potentially troublesome default
$from_email = apply_filters('wp_mail_from', $from_email);
$from_name = apply_filters('wp_mail_from_name', $from_name);
// Set destination addresses
if (!is_array($to)) {
$to = explode(',', $to);
}
// Add any CC and BCC recipients
if (!empty($cc)) {
foreach ((array) $cc as $key => $recipient) {
// Break $recipient into name and address parts if in the format "Foo <*****@*****.**>"
if (preg_match('/(.*)<(.+)>/', $recipient, $matches)) {
if (count($matches) == 3) {
$cc[$key] = trim($matches[2]);
}
}
}
}
if (!empty($bcc)) {
foreach ((array) $bcc as $key => $recipient) {
// Break $recipient into name and address parts if in the format "Foo <*****@*****.**>"
if (preg_match('/(.*)<(.+)>/', $recipient, $matches)) {
if (3 == count($matches)) {
$bcc[$key] = trim($matches[2]);
}
}
}
}
$toname = array();
foreach ((array) $to as $key => $recipient) {
$toname[$key] = " ";
// Break $recipient into name and address parts if in the format "Foo <*****@*****.**>"
if (preg_match('/(.*)<(.+)>/', $recipient, $matches)) {
if (3 == count($matches)) {
$to[$key] = trim($matches[2]);
$toname[$key] = trim($matches[1]);
}
}
}
// Set Content-Type from header of from global variable
$global_content_type = Sendgrid_Tools::get_content_type();
if (!isset($content_type)) {
if (!$global_content_type or 'plaintext' == $global_content_type) {
$content_type = 'text/plain';
} elseif ('html' == $global_content_type) {
$content_type = 'text/html';
} else {
$content_type = 'text/plain';
}
}
if (!array_key_exists('sendgrid_override_template', $GLOBALS['wp_filter'])) {
$template = Sendgrid_Tools::get_template();
if ($template) {
$mail->setTemplateId($template);
}
} else {
$message = apply_filters('sendgrid_override_template', $message, $content_type);
}
$content_type = apply_filters('wp_mail_content_type', $content_type);
$mail->setSubject($subject)->setText($message)->addCategory(SENDGRID_CATEGORY)->setFrom($from_email);
if ('api' == $method) {
$mail->addTo($to, $toname);
} else {
$mail->addTo($to);
}
$categories = explode(',', Sendgrid_Tools::get_categories());
foreach ($categories as $category) {
$mail->addCategory($category);
}
// send HTML content
if ('text/plain' !== $content_type) {
$mail->setHtml(Sendgrid_Tools::remove_all_tag_urls($message));
}
// set from name
if ($from_email) {
$mail->setFromName($from_name);
}
// set from cc
if (count($cc)) {
$mail->setCcs($cc);
}
// set from bcc
if (count($bcc)) {
$mail->setBccs($bcc);
}
if (!isset($replyto)) {
$replyto = trim(Sendgrid_Tools::get_reply_to());
}
$reply_to_found = preg_match('/.*<(.*)>.*/i', $replyto, $result);
if ($reply_to_found) {
$replyto = $result[1];
}
$mail->setReplyTo($replyto);
// add attachemnts
if (count($attached_files)) {
$mail->setAttachments($attached_files);
}
$sendgrid = Sendgrid_WP::get_instance();
if (!$sendgrid) {
return false;
}
return $sendgrid->send($mail);
}
/**
* Send OptIn email
*
* @param string $email Email of subscribed user
* @param string $first_name First Name of subscribed user
* @param string $last_name Last Name of subscribed user
* @return bool
*/
public static function send_confirmation_email($email, $first_name = '', $last_name = '', $from_settings = false)
{
$subject = Sendgrid_Tools::get_mc_signup_email_subject();
$content = Sendgrid_Tools::get_mc_signup_email_content();
$content_text = Sendgrid_Tools::get_mc_signup_email_content_text();
if (false == $subject or false == $content or false == $content_text) {
return false;
}
$subject = stripslashes($subject);
$content = stripslashes($content);
$content_text = stripslashes($content_text);
$to = array($email);
$token = Sendgrid_OptIn_API_Endpoint::generate_email_token($email, $first_name, $last_name);
$transient = get_transient($token);
if ($transient and isset($transient['email']) and !$from_settings) {
return false;
}
if (false == set_transient($token, array('email' => $email, 'first_name' => $first_name, 'last_name' => $last_name), 24 * 60 * 60) and !$from_settings and $transient) {
return false;
}
$confirmation_link = site_url() . '?__sg_api=1&token=' . $token;
$headers = new SendGrid\Email();
$headers->addSubstitution('%confirmation_link%', array($confirmation_link))->addCategory('wp_sendgrid_subscription_widget');
add_filter('sendgrid_mail_text', function () use(&$content_text) {
return $content_text;
});
$result = wp_mail($to, $subject, $content, $headers);
return $result;
}
public function testSubstitutionAccessors()
{
$email = new SendGrid\Email();
$substitutions = array("sub_1" => array("val_1.1", "val_1.2", "val_1.3"), "sub_2" => array("val_2.1", "val_2.2"), "sub_3" => array("val_3.1", "val_3.2", "val_3.3", "val_3.4"), "sub_4" => array("val_4.1", "val_4.2", "val_4.3"));
$email->setSubstitutions($substitutions);
$header = $email->getSmtpapiHeaders();
$this->assertEquals($substitutions, $header['sub']);
$this->assertEquals("{\"sub\":{\"sub_1\":[\"val_1.1\",\"val_1.2\",\"val_1.3\"],\"sub_2\":[\"val_2.1\",\"val_2.2\"],\"sub_3\":[\"val_3.1\",\"val_3.2\",\"val_3.3\",\"val_3.4\"],\"sub_4\":[\"val_4.1\",\"val_4.2\",\"val_4.3\"]}}", $email->getSmtpapiHeadersJson());
// ensure that addSubstitution appends to the list of substitutions
$sub_vals = array("val_5.1", "val_5.2", "val_5.3", "val_5.4");
$email->addSubstitution("sub_5", $sub_vals);
$substitutions["sub_5"] = $sub_vals;
$header = $email->getSmtpapiHeaders();
$this->assertEquals(5, count($header['sub']));
$this->assertEquals($substitutions, $header['sub']);
}