vpn用动态域名

import dns.resolver
import requests

def get_current_ip():
    response = requests.get('https://api.ipify.org')
    return response.text

def update_ddns(domain, username, password):
    current_ip = get_current_ip()
    resolver = dns.resolver.Resolver()
    resolver.nameservers = ['8.8.8.8']  # 使用Google的DNS服务器
    try:
        answers = resolver.query(domain, 'TXT')
        for rdata in answers:
            if 'currentIP' in rdata.strings[0].decode():
                if current_ip == rdata.strings[0].decode().split('=')[1]:
                    return True  # IP没有变化，无需更新
    except dns.resolver.NXDOMAIN:
        pass
    # 更新DDNS记录
    ddns_url = f'https://{username}:{password}@your-ddns-provider.com/update?hostname={domain}&myip={current_ip}'
    response = requests.get(ddns_url)
    return response.status_code == 200

# 示例调用
domain = 'yourdomain.ddns.net'
username = 'your_username'
password = 'your_password'
update_ddns(domain, username, password)