[交流讨论] 自编某主机商DDNS脚本

0x00 背景
    准备在家搭建一个服务器，动态公网IP正在申请中，由于要使用DDns对域名动态解析，但是我的域名提供商没有相关的服务，只能自己写个脚本
0x01 实现原理
   由于家里到时候是动态公网IP，IP会变化，这种情况就要修改域名提供商的解析地址：

我理解的ddns就是检测家里的外网IP,然后自动修改这个解析地址就成了，于是就诞生了这个脚本
0x02 脚本实现

• 用户登陆：比较简单吧主要使用sessions()保存cookie方便后续的操作。
• 获取解析记录：
  通过抓包可找到接口和参数格式
• 获取本机IP
  通过curl ip.sb获得
• 修改记录
  同样是抓包找到接口和参数格式

import requests
import os
import time
 
mysession = requests.session()
headers = {
    'Host': 'api.zhujiwu.com',
    'Content-Length': '46',
    'Accept': 'application/json, text/javascript, */*; q=0.01',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36',
    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
    'Origin': 'http://www.zhujiwu.com',
    'Referer': 'http://www.zhujiwu.com/',
    'Accept-Encoding': 'gzip, deflate',
    'Accept-Language': 'zh-CN,zh;q=0.9',
    'Connection': 'close'}
 
 
def login(username, pwd):
    url = "http://www.zhujiwu.com/www/login.php"
    data = {
        "cmd": "login",
        "username": username,
        "password": pwd
    }
    try:
        r = mysession.post(url=url, data=data, headers=headers)
        if r.json()['response'] == '200':
            print('主机屋账户:【' + username + '】登陆成功！')
            print("当前Cookies:", mysession.cookies)
        else:
            print(r.json())
    except Exception as e:
        print(e)
 
 
def get_history(domain):
    url = "http://www.zhujiwu.com/www/domain.php"
    data = {
        "cmd": "jiexi_query",
        "count": "10",
        "page": "1",
        "domainname": domain,
        "title": ""}
    r = mysession.post(url=url, data=data, headers=headers)
    if r.json()['response'] == "200":
        dns_history = r.json()['data']['content']
        print(domain)
        for i in dns_history:
            print(i["id"], i["set_type"], i["title"], i["content"])
 
        return dns_history
    else:
        return
 
 
def get_realIP():
    real_IP = os.popen('curl ip.sb').read()
    print("本机IP:", real_IP)
    return real_IP
 
 
def change_dns(domai_id, realIP, domainname):
    url = "http://www.zhujiwu.com/www/domain.php"
    realIP = realIP.replace("\n", "")
    data = {
        'cmd': 'jiexi_modify',
        'ac_id': domai_id,
        'mx': '',
        'content': realIP,
        'ttl': '120'
    }
    r = mysession.post(url=url, data=data, headers=headers)
    if r.json()['response'] == "200":
        print("修改【", domainname, "】解析到【", realIP, "】成功")
    else:
        print("修改【", domainname, "】解析到【", realIP, "】失败")
 
 
if __name__ == '__main__':
    username = ''
    pwd = ''
    domain = ""
    login(username, pwd)
    while 1:
        dns_history = get_history(domain)
        realIP = get_realIP().replace("\n", "")
        for i in dns_history:
            if realIP != i["content"]:
                print("检测IP变更，修改解析:", end=" ")
                change_dns(i["id"], realIP, i["title"])
             
        time.sleep(60)