pypod.md

替换上你的Email，密码，域名ID，记录ID等参数，就可以运行了。 会在后台一直运行，每隔30秒检查一遍IP，如果修改了就更新IP。

获得domain_id可以用curl curl -k https://dnsapi.cn/Domain.List -d "login_email=xxx&login_password=xxx"

获得record_id类似 curl -k https://dnsapi.cn/Record.List -d "login_email=xxx&login_password=xxx&domain_id=xxx"

20130626 因个人需求特殊，需要将域名解析为网卡地址（内网地址）而不是公网地址，故而添加获取内网地址函数。

pypod.py

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

import httplib, urllib
import socket
import time
import fcntl
import struct

params = dict(
    login_email="email", # replace with your email
    login_password="password", # replace with your password
    format="json",
    domain_id=100, # replace with your domain_od, can get it by API Domain.List
    record_id=100, # replace with your record_id, can get it by API Record.List
    sub_domain="www", # replace with your sub_domain
    record_line="默认",
)
current_ip = None

def ddns(ip):
    params.update(dict(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(params), headers)
    
    response = conn.getresponse()
    print response.status, response.reason
    data = response.read()
    print data
    conn.close()
    return response.status == 200

def getip():
    sock = socket.create_connection(('ns1.dnspod.net', 6666))
    ip = sock.recv(16)
    sock.close()
    return ip

def get_default_iface():
    '''get default route interface from proc'''
    f = open('/proc/net/route')
    for i in f:
        s = i.split('\t')
        if s[1] == '00000000':
            iface = s[0]
            break
    return iface

def get_private_ip(ifname): 
    '''get ip address from interface'''
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 
    return socket.inet_ntoa(fcntl.ioctl( 
        s.fileno(), 
        0x8915,  # SIOCGIFADDR 
        struct.pack('256s', ifname[:15]) 
    )[20:24])

if __name__ == '__main__':
    while True:
        try:
            ip = get_private_ip(get_default_iface())
            #ip = getip()
            print ip
            if current_ip != ip:
                if ddns(ip):
                    current_ip = ip
        except Exception, e:
            print e
            pass
        time.sleep(30)