/**
* Sends out newsletters.
*
* I recipients is an array of subscribers, other parameters are ignored and a test
* batch is started. This parameter has priority over all.
*
* If continue is true, the system try to continue a previous batch keeping its
* configuration (eg. if it was a simulation or not).
*
* If continue is false, simulate indicates if the batch is a simulation and forces
* the subscriber's email to a test one, as specified in the configuration.
*
* Return true if the batch is completed.
*/
function newsletter_send_batch()
{
global $wpdb;
newsletter_info(__FUNCTION__, 'Start');
$options = get_option('newsletter');
$options_email = get_option('newsletter_email');
$batch = get_option('newsletter_batch');
if ($batch == null || !is_array($batch)) {
newsletter_error(__FUNCTION__, 'No batch found');
return;
}
newsletter_debug(__FUNCTION__, "Batch:\n" . print_r($last, true));
// Batch have to contain 'id' which is the starting id, 'simulate' boolean
// to indicate if is a simulation or not, 'scheduled' if it's a scheduled
// sending process. 'list' is the list number, required.
// If 'id' = 0 it's a new seding process.
if (!isset($batch['id'])) {
newsletter_error(__FUNCTION__, 'Batch "id" parameter not present');
return false;
}
if (!isset($batch['list'])) {
newsletter_error(__FUNCTION__, 'Batch "list" parameter not present');
return false;
}
if (!isset($batch['simulate'])) {
newsletter_error(__FUNCTION__, 'Batch "simulate" parameter not present');
return false;
}
if (!isset($batch['scheduled'])) {
newsletter_error(__FUNCTION__, 'Batch "scheduled" parameter not present');
return false;
}
$id = (int) $batch['id'];
$list = (int) $batch['list'];
$simulate = (bool) $batch['simulate'];
$scheduled = (bool) $batch['scheduled'];
// Used to avoid echo
if ($scheduled) {
$max = $options_email['scheduler_max'];
if (!is_numeric($max)) {
$max = 10;
}
} else {
$max = $options_email['max'];
if (!is_numeric($max)) {
$max = 0;
}
}
$query = "select * from " . $wpdb->prefix . "newsletter where status='C' and list=" . $list . " and id>" . $id . " order by id";
if ($max > 0) {
$query .= " limit " . $max;
}
$recipients = $wpdb->get_results($query);
// For a new batch save some info
if ($id == 0) {
newsletter_delete_batch_file();
wp_clear_scheduled_hook('newsletter_cron_hook');
$batch['total'] = $wpdb->get_var("select count(*) from " . $wpdb->prefix . "newsletter where status='C' and list=" . $list);
$batch['sent'] = 0;
$batch['completed'] = false;
$batch['message'] = '';
}
// Not all hosting provider allow this...
@set_time_limit(100000);
$start_time = time();
$max_time = (int) (ini_get('max_execution_time') * 0.8);
$db_time = time();
if (!$scheduled) {
echo 'Sending to: <br />';
}
if (isset($options_email['novisual'])) {
$message = $options_email['message'];
} else {
$message = '<html><head><style type="text/css">' . newsletter_get_theme_css($options_email['theme']) . '</style></head><body>' . $options_email['message'] . '</body></html>';
}
$idx = 0;
add_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_init_mail();
}
foreach ($recipients as $r) {
$url = newsletter_add_qs($options['url'], 'na=u&ni=' . $r->id . '&nt=' . $r->token);
$m = newsletter_replace_url($message, 'UNSUBSCRIPTION_URL', $url);
$m = newsletter_replace($m, $r);
if (defined('NEWSLETTER_EXTRAS') && isset($options_email['track'])) {
$m = newsletter_relink($m, $r->id, $options_email['name']);
}
$s = $options_email['subject'];
$s = newsletter_replace($s, $r);
if ($simulate) {
$x = newsletter_mail($options_email['simulate_email'], $s, $m, true);
} else {
$x = newsletter_mail($r->email, $s, $m, true);
}
if (!$scheduled) {
echo htmlspecialchars($r->name) . ' (' . $r->email . ') ';
if ($x) {
echo '[OK] - ';
newsletter_debug(__FUNCTION__, 'Sent to ' . $r->id . ' success');
} else {
echo '[KO] - ';
newsletter_debug(__FUNCTION__, 'Sent to ' . $r->id . ' failed');
}
flush();
}
$idx++;
$batch['sent']++;
$batch['id'] = $r->id;
// Try to avoid database timeout
if (time() - $db_time > 15) {
newsletter_debug(__FUNCTION__, 'Batch saving to avoid database timeout');
$db_time = time();
$batch['message'] = 'Temporary saved batch to avoid database timeout';
if (!update_option('newsletter_batch', $batch)) {
newsletter_error(__FUNCTION__, 'Unable to save to database, saving on file system');
newsletter_error(__FUNCTION__, "Batch:\n" . print_r($batch, true));
newsletter_save_batch_file($batch);
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return false;
}
}
// Check for the max emails per batch
if ($max != 0 && $idx >= $max) {
newsletter_info(__FUNCTION__, 'Batch saving due to max emails limit reached');
$batch['message'] = 'Batch max emails limit reached (it is ok)';
if (!update_option('newsletter_batch', $batch)) {
newsletter_error(__FUNCTION__, 'Unable to save to database, saving on file system');
newsletter_error(__FUNCTION__, "Batch:\n" . print_r($batch, true));
newsletter_save_batch_file($batch);
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return false;
}
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return true;
}
// Timeout check, max time is zero if set_time_limit works
if ($max_time != 0 && time() - $start_time > $max_time) {
newsletter_info(__FUNCTION__, 'Batch saving due to max time limit reached');
$batch['message'] = 'Batch max time limit reached (it is ok)';
if (!update_option('newsletter_batch', $batch)) {
newsletter_error(__FUNCTION__, 'Unable to save to database, saving on file system');
newsletter_error(__FUNCTION__, "Batch:\n" . print_r($last, true));
newsletter_save_batch_file($batch);
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return false;
}
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return true;
}
}
// All right (incredible!)
newsletter_info(__FUNCTION__, 'Sending completed!');
$batch['completed'] = true;
$batch['message'] = '';
if (!update_option('newsletter_batch', $batch)) {
newsletter_error(__FUNCTION__, 'Unable to save to database, saving on file system');
newsletter_error(__FUNCTION__, "Batch:\n" . print_r($last, true));
newsletter_save_batch_file($batch);
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return false;
}
remove_action('phpmailer_init', 'newsletter_phpmailer_init');
if (newsletter_has_extras('1.0.4')) {
newsletter_close_mail();
}
return true;
}
delete_option('newsletter_batch', array());
}
if (isset($_POST['scheduled_simulate']) && check_admin_referer()) {
$options = stripslashes_deep($_POST['options']);
update_option('newsletter_email', $options);
newsletter_send_scheduled(0, true);
}
if (isset($_POST['scheduled_send']) && check_admin_referer()) {
$options = stripslashes_deep($_POST['options']);
update_option('newsletter_email', $options);
newsletter_send_scheduled(0, false);
}
if (isset($_POST['restore']) && check_admin_referer()) {
$batch = newsletter_load_batch_file();
update_option('newsletter_batch', $batch);
newsletter_delete_batch_file();
}
// Theme style
$css_url = null;
$theme_dir = newsletter_get_theme_dir($options['theme']);
if (file_exists($theme_dir . '/style.css')) {
$css_url = newsletter_get_theme_url($options['theme']) . '/style.css';
}
$nc = new NewsletterControls($options, 'composer');
if (!isset($options['novisual'])) {
?>
<script type="text/javascript" src="<?php
echo get_option('siteurl');
?>
/wp-content/plugins/newsletter/tiny_mce/tiny_mce.js"></script>
<script type="text/javascript">
