Nginx secure link for Custom URL

Nginx_secure_link_for_Custom_URL.patch

Index: server/lib/vod.class.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- server/lib/vod.class.php	(date 1459783782000)
+++ server/lib/vod.class.php	(revision )
@@ -1032,6 +1032,24 @@
             $replace_str = $tmp_arr[1].str_pad($series, 2, '0',  STR_PAD_LEFT );
             $url = str_replace($search_str, $replace_str, $url);
         }
+
+        $secret = Config::get('nginx_secure_link_secret');
+
+        if(preg_match('/http(s)?:\/\/([^\/]+)\/(.+)$/', $url, $match)){
+            $uri = '/'.$match[3];
+        }else{
+            $uri = '';
+        }
+
+        $remote_addr = $this->stb->ip;
+        $expire = time() + Config::getSafe('vclub_nginx_tmp_link_ttl', 7200);
+
+        $hash = base64_encode(md5($secret.$uri.$remote_addr.$expire, true));
+
+        $hash = strtr($hash, '+/', '-_');
+        $hash = str_replace('=', '', $hash);
+
+        $url .= (strpos($url, '?') !== false ? '&' : '?') . 'st='.$hash.'&e='.$expire;
         return $url;
     }
 }
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