/**
* Intercept the request parameters which drive the subscription and unsubscription
* process.
*/
function newsletter_init()
{
global $newsletter_step, $wpdb, $newsletter_subscriber;
global $hyper_cache_stop;
// "na" always is the action to be performed - stands for "newsletter action"
$action = $_REQUEST['na'];
if (!$action) {
return;
}
$hyper_cache_stop = true;
if (defined('NEWSLETTER_EXTRAS')) {
newsletter_extra_init($action);
}
$options = get_option('newsletter');
// Subscription request from a subscription form (in page or widget), can be
// a direct subscription with no confirmation
if ($action == 's') {
if (!newsletter_is_email($_REQUEST['ne'])) {
die(newsletter_label('error_email'));
}
// If not set, the subscription form is not requesting the name, so we do not
// raise errors.
if (isset($_REQUEST['nn'])) {
if (trim($_REQUEST['nn']) == '') {
die(newsletter_label('error_name'));
}
} else {
$_REQUEST['nn'] = '';
}
$profile1 = $_REQUEST['np'];
if (!isset($profile1) || !is_array($profile1)) {
$profile1 = array();
}
// keys starting with "_" are removed because used internally
$profile = array();
foreach ($profile1 as $k => $v) {
if ($k[0] == '_') {
continue;
}
$profile[$k] = $v;
}
$profile['_ip'] = $_SERVER['REMOTE_ADDR'];
$profile['_referrer'] = $_SERVER['HTTP_REFERER'];
// Check if the group is good
newsletter_subscribe($_REQUEST['ne'], $_REQUEST['nn'], $profile);
if (isset($options['noconfirmation'])) {
$newsletter_step = 'confirmed';
} else {
$newsletter_step = 'subscribed';
}
return;
}
// A request to confirm a subscription
if ($action == 'c') {
$id = $_REQUEST['ni'];
newsletter_confirm($id, $_REQUEST['nt']);
header('Location: ' . newsletter_add_qs($options['url'], 'na=cs&ni=' . $id . '&nt=' . $_REQUEST['nt'], false));
die;
}
// Show the confirmed message after a redirection (to avoid mutiple email sending).
// Redirect is sent by action "c".
if ($action == 'cs') {
$newsletter_subscriber = newsletter_get_subscriber($_REQUEST['ni']);
if ($newsletter_subscriber->token != $_REQUEST['nt']) {
die('Ivalid token');
}
$newsletter_step = 'confirmed';
}
// Unsubscription process has 2 options: if email and token are specified the user
// will only be asked to confirm. If there is no infos of who remove (when
// mass mail mode is used) the user will be asked to type the emailto be removed.
if ($action == 'u') {
$newsletter_step = 'unsubscription';
}
// User confirmed he want to unsubscribe clicking the link on unsubscription
// page
if ($action == 'uc') {
newsletter_unsubscribe($_REQUEST['ni'], $_REQUEST['nt']);
$newsletter_step = 'unsubscribed';
}
}
<?php
include dirname(__FILE__) . '/newsletter-subscription/ns.php';
if ($email = $_REQUEST['email']) {
//Do Simple MX Lookup for email validation
$validEmail = true;
if ($validEmail) {
$subscribed = newsletter_subscribe($email);
if (false == $subscribed) {
$result['success'] = false;
$result['error'] = '';
$result['success_message'] = 'Subscription failed!';
} else {
$result['success'] = true;
$result['error'] = '';
$result['success_message'] = 'Thank you for subscribing.';
}
} else {
$result['success'] = false;
$result['error'] = '';
$result['success_message'] = 'Invalid Email Address';
}
}
header("Content-Type: application/json");
$response = json_encode($result);
echo $response;