FastDFS防盗链

FastDFS扩展模块内置了通过token来实现防盗链的功能。开启防盗链后，访问文件是需要在url中加两个参数：token和ts。ts为时间戳，token为系统根据时间戳和密码生成的信物。为了系统的安全，下面一起来开启防盗链吧！

1. 配置http访问

1.1 开启防盗链检查

vim /etc/fdfs/http.conf

# HTTP default content type
http.default_content_type = application/octet-stream

# MIME types mapping filename
# MIME types file format: MIME_type  extensions
# such as:  image/jpeg  jpeg jpg jpe
# you can use apache's MIME file: mime.types
http.mime_types_filename=mime.types

# if use token to anti-steal
# default value is false (0)
http.anti_steal.check_token=true       # 修改1，开启防盗链检查

# token TTL (time to live), seconds
# default value is 600
http.anti_steal.token_ttl=900  # 选择性修改token的过期时间

# secret key to generate anti-steal token
# this parameter must be set when http.anti_steal.check_token set to true·
# the length of the secret key should not exceed 128 bytes
http.anti_steal.secret_key=123456    # 修改2，防盗链密码

# return the content of the file when check token fail
# default value is empty (no file sepecified)
http.anti_steal.token_check_fail=/root/error.jpg    # 修改3，配置拒绝访问后显示的图片，需要是个有效可访问的图片

# if support multi regions for HTTP Range
# default value is true
http.multi_range.enabed = true

1.2 重启nginx

service nginx restart
# 或
nginx -s reload

1.3 验证

1. 没有开启防盗链，文件可以正常访问：

   

2. 成功开启防盗链后，访问文件时携带了错误的token，文件不能访问并且显示访问出错的图片

   

3. 携带正确的token，效果已经达到，只要保证密码不被泄露，我们的文件就是相对安全的

   

2. 开发服务端代码修改

2.1 fdfs_client.conf配置

http.anti_steal_token = true  # 启动防盗链
http.secret_key = 123456   # 防盗链密码

tracker_server=192.168.56.10:22122
tracker_server=192.168.56.11:22122

 

2.2 服务器端

服务器端为文件访问生成token
remoteFilename:不能加group1（group name）

package com.aixin.tuna.fdfs;

import org.csource.common.MyException;
import org.csource.fastdfs.ProtoCommon;

import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;

/**
 * Created by dailin on 2018/6/12.
 */
public class FdfsFDL {
    public static void main(String[] args) throws UnsupportedEncodingException, NoSuchAlgorithmException, MyException {
        String fileName = "M00/00/00/wKg4C1tFmTWAFPKBAADdeFFxlXA240.png";
        String host = "http://192.168.56.10:8888";
        String secretKey = "";
        String sourceUrl = getSourceUrl(fileName, host, secretKey);
        System.out.println(sourceUrl);
    }

    /**
     * 生成防盗链token
     * @param remoteFilename 文件路径，不带group：M00/00/00/wKg4C1tFmTWAFPKBAADdeFFxlXA240.png
     * @param httpHost         文件服务器web访问地址
     * @param secretKey         密码
     * @return
     * @throws UnsupportedEncodingException
     * @throws NoSuchAlgorithmException
     * @throws MyException
     */
    public static String getSourceUrl(String remoteFilename, String httpHost,String secretKey) throws UnsupportedEncodingException, NoSuchAlgorithmException, MyException {
        int lts = (int)(System.currentTimeMillis() / 1000);
        String token = ProtoCommon.getToken(remoteFilename, lts, secretKey); //初始化secret_key
        return httpHost + "/" + remoteFilename + "?token=" + token + "&ts=" + lts;
    }
}

得到

http://192.168.56.10:8888/M00/00/00/wKg4C1tFmTWAFPKBAADdeFFxlXA240.png?token=2fd428c6acc14126239e3a7d7d1d872b&ts=153