/**
* Handle an incoming request.
*
* @param \Illuminate\Http\Request $request
* @param \Closure $next
* @return mixed
*/
public function handle($request, Closure $next)
{
$url = $request->url_string;
re_scrape($url);
$CrawlerDetect = new CrawlerDetect();
if ($CrawlerDetect->isCrawler()) {
return;
} else {
return $next($request);
}
}
public function track_download($file = '', $episode = 0, $referrer = '')
{
global $wpdb;
session_start();
if (!$file || !$episode || !isset($episode->ID)) {
return;
}
// Make sure that the referrer is always a string (even if empty)
$referrer = (string) $referrer;
// Get request user agent
$user_agent = (string) $_SERVER['HTTP_USER_AGENT'];
// Include Crawler Detect library
require_once 'lib/CrawlerDetect/CrawlerDetect.php';
// Check if this user agent is a crawler/bot to prevent false stats
$CrawlerDetect = new CrawlerDetect();
if ($CrawlerDetect->isCrawler($user_agent)) {
return;
}
// Check for specific podcasting services in user agent
// The iOS Podcasts app makes a HEAD request with user agent Podcasts/2.4 and then a GET request with user agent AppleCoreMedia
// This conditional will prevent double tracking from that app
if (stripos($user_agent, 'podcasts/') !== false) {
return;
}
if (stripos($user_agent, 'itunes') !== false || stripos($user_agent, 'AppleCoreMedia') !== false) {
$referrer = 'itunes';
} elseif (stripos($user_agent, 'stitcher') !== false) {
$referrer = 'stitcher';
} elseif (stripos($user_agent, 'overcast') !== false) {
$referrer = 'overcast';
} elseif (stripos($user_agent, 'Pocket Casts') !== false) {
$referrer = 'pocketcasts';
}
// Get episode ID for database insert
$episode_id = $episode->ID;
// Get remote client IP address
// If server is behind a reverse proxy (e.g. Cloudflare or Nginx), we need to get the client's IP address from HTTP headers
// Cloudflare headers reference: https://support.cloudflare.com/hc/en-us/articles/200170986
// The order of precedence here being Cloudflare, then other reverse proxies such as Nginx, then remote_addr
$ip_address = '';
if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
$ip_address = $_SERVER['HTTP_CF_CONNECTING_IP'];
} elseif (isset($_SERVER['CF-Connecting-IP'])) {
$ip_address = $_SERVER['CF-Connecting-IP'];
} elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip_address = $_SERVER['HTTP_X_FORWARDED_FOR'];
} elseif (isset($_SERVER['X-Forwarded-For'])) {
$ip_address = $_SERVER['X-Forwarded-For'];
} else {
// None of the above headers are present (meaning we're not behind a reverse proxy) so fallback to using REMOTE_ADDR
$ip_address = $_SERVER['REMOTE_ADDR'];
}
// Exit if there is no detectable IP address
if (!$ip_address) {
return;
}
// Create transient name from episode ID, IP address and referrer
$transient = 'sspdl_' . $episode_id . '_' . str_replace('.', '', $ip_address) . '_' . $referrer;
// Allow forced transient refresh
if (isset($_GET['force'])) {
delete_transient($transient);
}
// Check transient to prevent excessive tracking
if (get_transient($transient)) {
return;
}
// Insert data into database
$insert_row = $wpdb->insert($this->_table, array('post_id' => $episode_id, 'ip_address' => $ip_address, 'referrer' => $referrer, 'date' => $this->current_time), array('%d', '%s', '%s', '%d'));
// Set transient if successful to prevent excessive tracking
if ($insert_row) {
set_transient($transient, $this->current_time, HOUR_IN_SECONDS);
}
}
