[Nginx] nginx利用referer指令实现防盗链配置

location ~* \.(gif|jpg|png|webp)$ {
   valid_referers none blocked domain.com *.domain.com server_names ~\.google\. ~\.baidu\.;
   if ($invalid_referer) {
  return 403;
  #rewrite ^/ http://www.domain.com/403.jpg;
   }
   root /opt/www/image;
  }

[root@loya ~]# curl -I http://qingkang.me/1.jpg -H 'Referer:http://www.baidu.com'
HTTP/1.1 200 OK
Server: nginx/1.8.1
Date: Fri, 16 Dec 2016 14:56:51 GMT
Content-Type: image/jpeg
Content-Length: 17746
Last-Modified: Tue, 16 Aug 2016 03:20:21 GMT
Connection: keep-alive
ETag: "57b28675-4552"
Accept-Ranges: bytes
[root@loya ~]# curl -I http://qingkang.me/1.jpg -H 'Referer:http://www.qq.com'
HTTP/1.1 403 Forbidden
Server: nginx/1.8.1
Date: Fri, 16 Dec 2016 14:56:58 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 168
Connection: keep-alive

• none “Referer” 为空
  
• blocked “Referer”不为空，但是里面的值被代理或者防火墙删除了，这些值都不以http://或者https://开头，而是“Referer: XXXXXXX”这种形式
  
• server_names “Referer”来源头部包含当前的server_names（当前域名）
  
• arbitrary string 任意字符串,定义服务器名或者可选的URI前缀.主机名可以使用*开头或者结尾，在检测来源头部这个过程中，来源域名中的主机端口将会被忽略掉
  
• regular expression 正则表达式,~表示排除https://或http://开头的字符串.