之前文章Nginx搭建flv mp4流媒体服务器中介绍了通过referer判断实现简单的防盗链，弊端是来源容易被伪造。今天介绍一下更高级的防盗链策略。

软件版本:
nginx-1.10.3
nginx-accesskey-2.0.3

增加编译参数 --with-http_secure_link_module --add-module=/root/nginx-accesskey-2.0.3 并重新编译 nginx

./configure --prefix=/usr/local/nginx --add-module=../nginx_mod_h264_streaming-2.2.7 --with-pcre=../pcre-8.41 --with-zlib=../zlib-1.2.11 --user=www --group=www --with-http_flv_module --with-http_stub_status_module --with-threads --with-http_ssl_module --with-http_secure_link_module --add-module=/root/nginx-accesskey-2.0.3 --with-openssl-opt=enable --with-http_v2_module --with-http_mp4_module --with-cc-opt='-O3' make && make install 

完整的配置文件示例:

user www www;  worker_processes auto;  error_log  /usr/local/nginx/logs/error.log  crit;  pid /usr/local/nginx/logs/nginx.pid;  events {     use epoll;     worker_connections 65535; }  http {     include mime.types;     default_type application/octet-stream;          server_names_hash_bucket_size 128;     client_header_buffer_size 32k;     large_client_header_buffers 4 32k;     client_max_body_size 150m;     tcp_nopush on;     tcp_nodelay on;          sendfile on;          keepalive_timeout 65;     limit_conn_zone $binary_remote_addr zone=perip:10m; #容器共使用10M的内存来应对IP传输开销          gzip on;     gzip_min_length  1k;     gzip_buffers     4 16k;     gzip_http_version 1.0;     gzip_comp_level 2;     gzip_types       text/plain application/x-javascript text/css application/xml;     gzip_vary on;     gzip_proxied        expired no-cache no-store private auth;     gzip_disable        "MSIE [1-6]\.";          server {         listen 80;         listen 443 ssl;          server_name qiquanji.com;          root /home/html;         limit_conn perip 3; #限制每个IP同一时间只能发起3个连接         limit_rate_after 10m; #在视频文件下载10M以后开始限速         limit_rate 100k; #速度限制为100K         charset utf-8;                  ssl on;         ssl_certificate      qiquanji.com_bundle.crt;         ssl_certificate_key  qiquanji.com.key;         ssl_session_timeout  5m;         ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;         ssl_ciphers ALL:!ADH:!EXPORT56:-RC4+RSA:+HIGH:+MEDIUM:!EXP;         ssl_prefer_server_ciphers on;         error_page 497 https://$host$uri; #http重定向到https           location ~ \.php$ {         fastcgi_pass 127.0.0.1:9000;         fastcgi_index index.php;         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;         include fastcgi_params;         }                  location ~ \.(mp4|m3u8)$ {                  mp4;                  valid_referers none blocked *.qiquanji.com; #防盗链授权             if ($invalid_referer) {                   return 403;             }             if (!-e $request_filename) {rewrite ^/(.*)/(.*)/(.*)/(.*) /$4?key=$1&st=$2&e=$3 last;}             accesskey on;             accesskey_hashmethod md5;             accesskey_arg "key";             accesskey_signature "mypass$REMOTE_ADDR";             secure_link $arg_st,$arg_e;             secure_link_md5 mypass$arg_e;             if ( $secure_link = "" ) {                 return 402;             }             if ( $secure_link = "0" ) {                 return 405;             }         }         access_log off;     } } 

结合PHP实现自动跳转到真实链接地址

<?php $key="mypass"; $ip=$_SERVER['REMOTE_ADDR']; $newkey=md5($key.$ip); $expire=time()+7200; // 过期时间为7200秒 $md5=base64_encode(md5($key.$expire,true)); $md5=strtr($md5,'+/','-_'); $md5=str_replace('=','',$md5); $path=$_REQUEST["v"]; // ?v=path $url = "$path?key=$newkey&st=$md5&e=$expire"; //$url="/".$newkey."/".$md5."/".$expire."/1.mp4"; header("Location:".$url); //==防盗链============================================================= $domain_list = array("qiquanji.com","www.qiquanji.com");//域名白名单。 $is_black_list = FALSE; $allow_empty_referer = TRUE;  $referer = $_SERVER["HTTP_REFERER"];         if($referer) {         //解析来源地址         $refererhost = parse_url($referer);         //来源地址的主域名         $host = strtolower($refererhost['host']);         if($is_black_list) {                 //如果是黑名单                 if (in_array($host, $domain_list)) {                           header('HTTP/1.1 404 Not Found');                                                           exit;                 } else {                         //succeed();                 }         } else {                 //如果是白名单                 if($host == $_SERVER['HTTP_HOST'] || in_array($host, $domain_list)) {                        // succeed();                 } else {                             header('HTTP/1.1 404 Not Found');                                                           exit;                 }         } } else {         if ($allow_empty_referer) {                 //succeed();         } else {                             header('HTTP/1.1 404 Not Found');                                                           exit;         } } //防盗链======================== ?> 

生成的链接类似这样：

由于流媒体服务器上没有安装php环境，这里直接yum安装：

安装php-fpm并添加开机启动

yum --enablerepo=remi install php php-fpm php-gd php-mysql php-mbstring php-xml php-mcrypt chkconfig --level 345 php-fpm on 

启动php-fpm

/etc/init.d/php-fpm restart 

配置 php-fpm 和 nginx，使它们一起工作

location ~ \.php$ {         fastcgi_pass 127.0.0.1:9000;         fastcgi_index index.php;         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;         include fastcgi_params;         } 

重启nginx使配置生效

/usr/local/nginx/sbin/nginx -s reload 

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