Add soundcloud callback file for saas routing

airtime_mvc/public/soundcloud_callback.php

@@ -0,0 +1,28 @@
+<?php
+
+class Router {
+
+    /**
+     * Parse the URL query string and store the key->val pairs
+     * into an array, then redirect
+     */
+    public function reroute() {
+        $params = array();
+        parse_str($_SERVER['QUERY_STRING'], $params);
+        $this->_redirect($params);
+    }
+
+    /**
+     * Redirect to the URL passed in the 'state' parameter
+     * when we're redirected here from SoundCloud
+     *
+     * @param $params array array of URL query parameters
+     */
+    private function _redirect($params) {
+        $url = urldecode($params['state']);
+        header("Location: $url?" . $_SERVER['QUERY_STRING']);
+    }
+
+}
+
+(new Router())->reroute();