Setup DDNS with DNSPOD API

ddns.py

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import socket
import fcntl
import struct
import json
import httplib, urllib

params = dict(
    login_email="",
    login_password="",
    format="json",
    domain_id=,
    record_id=
)

def ddns(ip):
    ddns_params = params.copy()
    ddns_params.update(dict(sub_domain="@", record_line="默认", value=ip))
    headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/json"}
    conn = httplib.HTTPSConnection("dnsapi.cn")
    conn.request("POST", "/Record.Ddns", urllib.urlencode(ddns_params), headers)

    response = conn.getresponse()
    data = response.read()
    conn.close()

    print data

def get_ip_address(ifname):
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        ip = socket.inet_ntoa(fcntl.ioctl(s.fileno(), 0x8915, struct.pack('256s', ifname[:15]))[20:24])
    except IOError:
        print 'Interface', ifname, 'doesn\'t exist!'
        return ''
    return ip

def get_localip():
    ip = get_ip_address('eth0')
    if len(ip) == 0:
        ip = get_ip_address('wlan0')
    return ip

def get_remoteip():
    headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/json"}
    conn = httplib.HTTPSConnection("dnsapi.cn")
    conn.request("POST", "/Record.Info", urllib.urlencode(params), headers)

    response = conn.getresponse()
    raw_data = response.read()
    conn.close()

    data = json.loads(raw_data)
    if data['status']['code'] != '1':
        print raw_data
        return ''

    return data['record']['value']

def main():
    rip = get_remoteip()
    if len(rip) == 0:
        print 'Failed to fetch remote ip addr, quit'
        return

    lip = get_localip()
    if len(lip) == 0:
        print 'Failed to get local ip addr, quit'
        return

    if lip == rip:
        print 'The same ip addr, quit'
        return

    ddns(lip)

if __name__ == '__main__':
    main()