/**
* Ajax Tracking (client-side, javascript)
*/
public static function slimtrack_js()
{
$data_string = base64_decode($_REQUEST['data']);
if ($data_string === false) {
do_action('slimstat_track_exit_101');
exit('-101.0');
}
// Parse the information we received
parse_str($data_string, self::$data_js);
self::$data_js = apply_filters('slimstat_filter_pageview_data_js', self::$data_js);
if (empty(self::$data_js['ci']) && empty(self::$data_js['id'])) {
do_action('slimstat_track_exit_102');
exit('-102.0');
}
if (!empty(self::$data_js['ci'])) {
list(self::$data_js['ci'], $nonce) = explode('.', self::$data_js['ci']);
if ($nonce != md5(self::$data_js['ci'] . self::$options['secret'])) {
do_action('slimstat_track_exit_103');
exit('-103.0');
}
} else {
list(self::$data_js['id'], $nonce) = explode('.', self::$data_js['id']);
if ($nonce != md5(self::$data_js['id'] . self::$options['secret'])) {
do_action('slimstat_track_exit_104');
exit('-104.0');
}
self::$stat['id'] = self::$data_js['id'];
// This script can be called to track outbound links
if (!empty(self::$data_js['obr'])) {
self::$stat['outbound_resource'] = strip_tags(trim(self::$data_js['obr']));
self::$stat['outbound_domain'] = !empty(self::$data_js['obd']) ? strip_tags(self::$data_js['obd']) : '';
if (strpos(self::$stat['outbound_resource'], '://') == false && substr(self::$stat['outbound_resource'], 0, 1) != '/' && substr(self::$stat['outbound_resource'], 0, 1) != '#') {
self::$stat['outbound_resource'] = '/' . self::$stat['outbound_resource'];
}
self::$stat['notes'] = !empty(self::$data_js['no']) ? strip_tags(stripslashes(trim(self::$data_js['no']))) : '';
self::$stat['position'] = !empty(self::$data_js['po']) ? strip_tags(trim(self::$data_js['po'])) : '';
self::$stat['type'] = isset(self::$data_js['ty']) ? abs(intval(self::$data_js['ty'])) : 0;
$timezone = get_option('timezone_string');
if (!empty($timezone)) {
date_default_timezone_set($timezone);
}
$lt = localtime();
if (!empty($timezone)) {
date_default_timezone_set('UTC');
}
self::$stat['dt'] = mktime($lt[2], $lt[1], $lt[0], $lt[4] + 1, $lt[3], $lt[5] + 1900);
self::insert_row(self::$stat, $GLOBALS['wpdb']->prefix . 'slim_outbound');
do_action('slimstat_track_success_outbound', self::$stat);
exit(self::$stat['id'] . '.' . md5(self::$stat['id'] . self::$options['secret']));
}
}
// Track client-side information (screen resolution, plugins, etc)
if (!empty(self::$data_js['sw']) && !empty(self::$data_js['sh'])) {
$screenres = array('resolution' => self::$data_js['sw'] . 'x' . self::$data_js['sh'], 'colordepth' => !empty(self::$data_js['cd']) ? self::$data_js['cd'] : '', 'antialias' => !empty(self::$data_js['aa']) ? intval(self::$data_js['aa']) : 0);
$screenres = apply_filters('slimstat_filter_pageview_screenres', $screenres, self::$stat);
// Now we insert the new screen resolution in the lookup table, if it doesn't exist
self::$stat['screenres_id'] = self::maybe_insert_row($screenres, $GLOBALS['wpdb']->base_prefix . 'slim_screenres', 'screenres_id', array());
}
self::$stat['plugins'] = !empty(self::$data_js['pl']) ? substr(str_replace('|', ',', self::$data_js['pl']), 0, -1) : '';
// If Javascript mode is enabled, record this pageview
if (self::$options['javascript_mode'] == 'yes' || !empty(self::$data_js['ci'])) {
self::slimtrack();
} else {
self::_set_visit_id(true);
if (!empty(self::$stat['screenres_id'])) {
self::$wpdb->query(self::$wpdb->prepare("\n\t\t\t\t\tUPDATE {$GLOBALS['wpdb']->prefix}slim_stats\n\t\t\t\t\tSET screenres_id = %d, plugins = %s\n\t\t\t\t\tWHERE id = %d", self::$stat['screenres_id'], self::$stat['plugins'], self::$stat['id']));
}
}
// Was this pageview tracked?
if (self::$stat['id'] <= 0) {
$abs_error_code = abs(self::$stat['id']);
switch ($abs_error_code) {
case '212':
do_action('slimstat_track_exit_' . $abs_error_code, self::$stat, $browser);
break;
default:
do_action('slimstat_track_exit_' . $abs_error_code, self::$stat);
}
exit(self::$stat['id'] . '.0');
}
// Send the ID back to Javascript to track future interactions
do_action('slimstat_track_success');
exit(self::$stat['id'] . '.' . md5(self::$stat['id'] . self::$options['secret']));
}
/**
* Makes sure that the data received from the client is well-formed (and that nobody is trying to do bad stuff)
*/
protected static function _check_data_integrity($_data = '')
{
// Parse the information we received
self::$data_js = apply_filters('slimstat_filter_pageview_data_js', $_data);
// Do we have an id for this request?
if (empty(self::$data_js['id']) || empty(self::$data_js['op'])) {
do_action('slimstat_track_exit_102');
self::$stat['id'] = -102;
self::_set_error_array(__('Invalid payload string. Try clearing your WordPress cache.', 'wp-slimstat'));
self::slimstat_save_options();
exit('-102.0');
}
// Make sure that the control code is valid
list(self::$data_js['id'], $nonce) = explode('.', self::$data_js['id']);
if ($nonce !== md5(self::$data_js['id'] . self::$options['secret'])) {
do_action('slimstat_track_exit_103');
self::$stat['id'] = -103;
self::_set_error_array(__('Invalid data signature. Try clearing your WordPress cache.', 'wp-slimstat'));
self::slimstat_save_options();
exit('-103.0');
}
}