ddns.py

#!/usr/bin/env python3

import requests

def update_dnspod(sub_domain, ip):
    token = '49794,a259c8cdfc221e32078e867fdfea0415'
    session = requests.Session()
    session.headers["User-Agent"] = "Py/3.x ([email protected])"

    data = {
        "format": "json",
        "login_token": token,
    }

    resp = session.post("https://dnsapi.cn/Domain.List", data)
    domains = resp.json()

    for domain in domains["domains"]:
        if domain["name"] == 'tyio.net':
            data["domain_id"] = domain["id"]
            break
    else:  # for ... else ...
        raise ValueError(domains)

    resp = session.post("https://dnsapi.cn/Record.List", data)
    records = resp.json()

    for record in records["records"]:
        if record["name"] == sub_domain:
            data["record_id"] = record["id"]
            if record['value'] == ip:
                return 'not change', ip
            break
    else:  # for ... else ...
        raise ValueError(records)

    data.update({
        "sub_domain": sub_domain,
        "record_type": "A",
        "record_line": "默认",
        "value": ip,
        "ttl": 600,
    })

    resp = session.post("https://dnsapi.cn/Record.Modify", data)

    return resp.json()


if __name__ == '__main__':
    o = update_dnspod('my-pro', requests.get('http://ip.tyio.net').text.strip())
    print(o)

ddns.sh

while true; do
    date
    ./ddns.py
    ssh -C -N -R 127.3.3.2:65222:localhost:22 tyio.net
    sleep 1
done