还在用花生壳做动态域名解析？用Python盘它！-瑞驰杂刊

最近不开森，用了半年的花生壳拒绝给我服务了。登录花生壳的官网后发现，原来是我没有实名认证啊。我以为又是流量高造成的短暂服务器崩溃。

点开实名认证页面，花生壳很耐心的提示我，不实名认证的后果。

好吧，可以理解。

于是乎我又继续点～～

哇塞好繁琐，用人家的服务就得忍受这点，感觉像个小舔狗，当舔狗是不可能的，永远不可能的，所以单身使我快乐。

按照官网的提示，看了看我的域名，嗯，果然没了。

看来官网还是说话算话的，怎么办呢？家里的NAS访问不了捉?，没法访问家里的服务也捉?。在大数据应用越来越普遍的当下，我是拒绝把个人信息透露到各个网站，尤其这种带人脸+身份证的，简直太恐怖了！

于是乎，动动手，动动脑～～～拒绝当舔狗。

需要准备的资源：

1: 域名，并实名认证

2: 家里有台能实时在线的设备且可以运行python程序

3:域名操作API

为了满足条件3，大家还是去大公司注册域名比较好，我直接在阿里云注册，价格都一样，还有完善的API服务，那我们就以阿里云为例。

解决问题思路：

用花生壳的动态域名解析，无非是解决家里的光猫重启后ip地址会发生变化，而我们又不能每重启一次就背一次ip。在花生壳注册一个域名（免费），在路由器登录并绑定域名，这样我们每次访问这个域名就可以访问到家里的网络了。

如果自己实现这个功能，就需要知道我们当前的ip地址，然后跟现在的域名A记录对比，如果不一致就调用修改DNS记录的API修改A记录。

那我们先解决第一个问题：注册域名、实名认证

现在搞IT的基本都有自己的域名了，如果您对域名还是比较陌生，就看看怎么注册域名并实名认证吧。

首先打开阿里云官网：www.aliyun.com（没有阿里云账号的同学也需要注册哦）

点击域名注册，在输入框输入你想要的域名，挑一个自己喜欢的吧。

有点需要注意，如果想把域名的记录解析到阿里云等服务器提供商，需要去工信部申请备案的，我们这里不用。有的域名不支持备案，那些不支持去查询一下吧。

购买、实名认证官方都有也好的操作流程，自己尝试一下吧。

如果注册好域名了，那么我们就开始下一步吧。

第二个问题：知道我们当前的公网IP

这个问题解决起来不难，我们打开百度，在搜索框里输入ip，回车就看到了自己的公网ip。再就是一堆的开发的API接口可以供我们调用，这个我就不讲了好吧，有疑问可以留言。

然后我们再解决第三个问题：调用API

进入阿里云控制台

在右上角头像处，鼠标悬浮，点击AccessKey管理。

新建用户

注意下面这里打钩。

保存AK信息，此时会下载一个csv文件，里面是AccessKeyId和AccessKeySecret。

接着，我们点击授权。

搜索DNS，把这几个都授权了吧。

这样我们完成了1，2，3步，我们就可以撸代码了。

先创建一个项目，创建虚拟环境，安装需要的库。

我们从安装依赖的库开始讲，首先需要安装阿里云的SDK。


pip install aliyun-python-sdk-core
pip install aliyun-python-sdk-core
pip install aliyun-python-sdk-core


pip install aliyun-python-sdk-alidns
pip install aliyun-python-sdk-alidns
pip install aliyun-python-sdk-alidns

然后再安装requests库


<span class="code-snippet_outer"><span class="code-snippet__attribute">pip</span> install requests</span>
<span class="code-snippet_outer"><span class="code-snippet__attribute">pip</span> install requests</span>
pip install requests

如果安装速度慢，可以考虑切换到阿里云pip源。在pip install *** 后面加上 -i https://mirrors.aliyun.com/pypi/simple/

比如：


<span class="code-snippet_outer"> pip install requests -i <span class="code-snippet__symbol">https:</span>/<span class="code-snippet__regexp">/mirrors.aliyun.com/pypi</span><span class="code-snippet__regexp">/simple/</span></span>
<span class="code-snippet_outer"> pip install requests -i <span class="code-snippet__symbol">https:</span>/<span class="code-snippet__regexp">/mirrors.aliyun.com/pypi</span><span class="code-snippet__regexp">/simple/</span></span>
 pip install requests -i https://mirrors.aliyun.com/pypi/simple/

都装好之后就可以真的撸代码了。

我们先调用添加域名接口，为我们刚申请的域名增加一个A记录，二级域名就叫home好了。


<span class="code-snippet_outer"><span class="code-snippet__comment">#!/usr/bin/env python</span></span>
<span class="code-snippet_outer"><span class="code-snippet__comment">#!/usr/bin/env python</span></span>
#!/usr/bin/env python
<span class="code-snippet_outer"><span class="code-snippet__comment">#coding=utf-8</span></span>
<span class="code-snippet_outer"><span class="code-snippet__comment">#coding=utf-8</span></span>
#coding=utf-8

<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.client <span class="code-snippet__keyword">import</span> AcsClient</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.client <span class="code-snippet__keyword">import</span> AcsClient</span>
from aliyunsdkcore.client import AcsClient
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ClientException</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ClientException</span>
from aliyunsdkcore.acs_exception.exceptions import ClientException
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ServerException</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ServerException</span>
from aliyunsdkcore.acs_exception.exceptions import ServerException
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkalidns.request.v20150109.AddDomainRecordRequest <span class="code-snippet__keyword">import</span> AddDomainRecordRequest</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkalidns.request.v20150109.AddDomainRecordRequest <span class="code-snippet__keyword">import</span> AddDomainRecordRequest</span>
from aliyunsdkalidns.request.v20150109.AddDomainRecordRequest import AddDomainRecordRequest

<span class="code-snippet_outer">client = AcsClient(<span class="code-snippet__string">'<accessKeyId>'</span>, <span class="code-snippet__string">'<accessSecret>'</span>, <span class="code-snippet__string">'cn-hangzhou'</span>)</span>
<span class="code-snippet_outer">client = AcsClient(<span class="code-snippet__string">'<accessKeyId>'</span>, <span class="code-snippet__string">'<accessSecret>'</span>, <span class="code-snippet__string">'cn-hangzhou'</span>)</span>
client = AcsClient('<accessKeyId>', '<accessSecret>', 'cn-hangzhou')

<span class="code-snippet_outer">request = AddDomainRecordRequest()</span>
<span class="code-snippet_outer">request = AddDomainRecordRequest()</span>
request = AddDomainRecordRequest()
<span class="code-snippet_outer">request.set_accept_format(<span class="code-snippet__string">'json'</span>)</span>
<span class="code-snippet_outer">request.set_accept_format(<span class="code-snippet__string">'json'</span>)</span>
request.set_accept_format('json')

<span class="code-snippet_outer">request.set_DomainName(<span class="code-snippet__string">"abc.com"</span>)</span>
<span class="code-snippet_outer">request.set_DomainName(<span class="code-snippet__string">"abc.com"</span>)</span>
request.set_DomainName("abc.com")
<span class="code-snippet_outer">request.set_RR(<span class="code-snippet__string">"home"</span>)</span>
<span class="code-snippet_outer">request.set_RR(<span class="code-snippet__string">"home"</span>)</span>
request.set_RR("home")
<span class="code-snippet_outer">request.set_Type(<span class="code-snippet__string">"A"</span>)</span>
<span class="code-snippet_outer">request.set_Type(<span class="code-snippet__string">"A"</span>)</span>
request.set_Type("A")
<span class="code-snippet_outer">request.set_Value(<span class="code-snippet__string">"8.8.8.8"</span>)</span>
<span class="code-snippet_outer">request.set_Value(<span class="code-snippet__string">"8.8.8.8"</span>)</span>
request.set_Value("8.8.8.8")

<span class="code-snippet_outer">response = client.do_action_with_exception(request)</span>
<span class="code-snippet_outer">response = client.do_action_with_exception(request)</span>
response = client.do_action_with_exception(request)
<span class="code-snippet_outer"><span class="code-snippet__comment"># python2:  print(response) </span></span>
<span class="code-snippet_outer"><span class="code-snippet__comment"># python2:  print(response) </span></span>
# python2:  print(response) 
<span class="code-snippet_outer">print(str(response, encoding=<span class="code-snippet__string">'utf-8'</span>))</span>
<span class="code-snippet_outer">print(str(response, encoding=<span class="code-snippet__string">'utf-8'</span>))</span>
print(str(response, encoding='utf-8'))

把上面的<accessKeyId>，<accessSecret>换成你的csv里的参数。去掉尖括号。

把abc.com换成你刚刚注册的域名。

执行一下，是不是成功了，执行成功之后会返回一个记录ID，把这个存好了，后面有用，登录控制台，看看域名解析是不是增加了一个home，记录值为8.8.8.8。

接下来就是查询域名的记录了，通过接口调用查询域名当前的记录值是多少。


<span class="code-snippet_outer"><span class="code-snippet__comment">#!/usr/bin/env python</span></span>
<span class="code-snippet_outer"><span class="code-snippet__comment">#!/usr/bin/env python</span></span>
#!/usr/bin/env python
<span class="code-snippet_outer"><span class="code-snippet__comment">#coding=utf-8</span></span>
<span class="code-snippet_outer"><span class="code-snippet__comment">#coding=utf-8</span></span>
#coding=utf-8

<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.client <span class="code-snippet__keyword">import</span> AcsClient</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.client <span class="code-snippet__keyword">import</span> AcsClient</span>
from aliyunsdkcore.client import AcsClient
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ClientException</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ClientException</span>
from aliyunsdkcore.acs_exception.exceptions import ClientException
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ServerException</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkcore.acs_exception.exceptions <span class="code-snippet__keyword">import</span> ServerException</span>
from aliyunsdkcore.acs_exception.exceptions import ServerException
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkalidns.request.v20150109.DescribeDomainRecordInfoRequest <span class="code-snippet__keyword">import</span> DescribeDomainRecordInfoRequest</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">from</span> aliyunsdkalidns.request.v20150109.DescribeDomainRecordInfoRequest <span class="code-snippet__keyword">import</span> DescribeDomainRecordInfoRequest</span>
from aliyunsdkalidns.request.v20150109.DescribeDomainRecordInfoRequest import DescribeDomainRecordInfoRequest

<span class="code-snippet_outer">client = AcsClient(<span class="code-snippet__string">'你的KeyID'</span>, <span class="code-snippet__string">'你的Secret'</span>, <span class="code-snippet__string">'cn-hangzhou'</span>)</span>
<span class="code-snippet_outer">client = AcsClient(<span class="code-snippet__string">'你的KeyID'</span>, <span class="code-snippet__string">'你的Secret'</span>, <span class="code-snippet__string">'cn-hangzhou'</span>)</span>
client = AcsClient('你的KeyID', '你的Secret', 'cn-hangzhou')

<span class="code-snippet_outer">request = DescribeDomainRecordInfoRequest()</span>
<span class="code-snippet_outer">request = DescribeDomainRecordInfoRequest()</span>
request = DescribeDomainRecordInfoRequest()
<span class="code-snippet_outer">request.set_accept_format(<span class="code-snippet__string">'json'</span>)</span>
<span class="code-snippet_outer">request.set_accept_format(<span class="code-snippet__string">'json'</span>)</span>
request.set_accept_format('json')

<span class="code-snippet_outer">request.set_RecordId(<span class="code-snippet__string">"你的记录id"</span>)</span>
<span class="code-snippet_outer">request.set_RecordId(<span class="code-snippet__string">"你的记录id"</span>)</span>
request.set_RecordId("你的记录id")

<span class="code-snippet_outer">response = client.do_action_with_exception(request)</span>
<span class="code-snippet_outer">response = client.do_action_with_exception(request)</span>
response = client.do_action_with_exception(request)
<span class="code-snippet_outer"><span class="code-snippet__comment"># python2:  print(response) </span></span>
<span class="code-snippet_outer"><span class="code-snippet__comment"># python2:  print(response) </span></span>
# python2:  print(response) 
<span class="code-snippet_outer">print(str(response, encoding=<span class="code-snippet__string">'utf-8'</span>))</span>
<span class="code-snippet_outer">print(str(response, encoding=<span class="code-snippet__string">'utf-8'</span>))</span>
print(str(response, encoding='utf-8'))

上面让你保存的id，在这用上了。看看返回了什么，一大串字符串，是字典的格式，我们需要用json反序列化一下拿到字典，取到里面的Value就是了。

稍微改下上面的代码：


<span class="code-snippet_outer">client = AcsClient(<span class="code-snippet__string">'你的Key'</span>, <span class="code-snippet__string">'你的Secret'</span>, <span class="code-snippet__string">'cn-hangzhou'</span>)</span>
<span class="code-snippet_outer">client = AcsClient(<span class="code-snippet__string">'你的Key'</span>, <span class="code-snippet__string">'你的Secret'</span>, <span class="code-snippet__string">'cn-hangzhou'</span>)</span>
client = AcsClient('你的Key', '你的Secret', 'cn-hangzhou')
<span class="code-snippet_outer">record_request = DescribeDomainRecordInfoRequest()</span>
<span class="code-snippet_outer">record_request = DescribeDomainRecordInfoRequest()</span>
record_request = DescribeDomainRecordInfoRequest()
<span class="code-snippet_outer">record_request.set_accept_format(<span class="code-snippet__string">'json'</span>)</span>
<span class="code-snippet_outer">record_request.set_accept_format(<span class="code-snippet__string">'json'</span>)</span>
record_request.set_accept_format('json')
<span class="code-snippet_outer">record_request.set_RecordId(<span class="code-snippet__string">'你的记录ID'</span>)</span>
<span class="code-snippet_outer">record_request.set_RecordId(<span class="code-snippet__string">'你的记录ID'</span>)</span>
record_request.set_RecordId('你的记录ID')
<span class="code-snippet_outer">response = client.do_action_with_exception(record_request)</span>
<span class="code-snippet_outer">response = client.do_action_with_exception(record_request)</span>
response = client.do_action_with_exception(record_request)
<span class="code-snippet_outer"><span class="code-snippet__keyword">if</span> response:</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">if</span> response:</span>
if response:
<span class="code-snippet_outer">    response = str(response, encoding=<span class="code-snippet__string">'utf-8'</span>)</span>
<span class="code-snippet_outer">    response = str(response, encoding=<span class="code-snippet__string">'utf-8'</span>)</span>
    response = str(response, encoding='utf-8')
<span class="code-snippet_outer">    response = json.loads(response)</span>
<span class="code-snippet_outer">    response = json.loads(response)</span>
    response = json.loads(response)
<span class="code-snippet_outer">    record_ip = response[<span class="code-snippet__string">'Value'</span>]</span>
<span class="code-snippet_outer">    record_ip = response[<span class="code-snippet__string">'Value'</span>]</span>
    record_ip = response['Value']
<span class="code-snippet_outer">    print(record_ip)</span>
<span class="code-snippet_outer">    print(record_ip)</span>
    print(record_ip)

打印出来IP了吧。

嗯，如果这时候我再拿到公网的IP做一下对比，是不是就能发现我们家里的ip是否变动了？

上面简单讲了怎么拿到公网ip，其实在百度上随便搜下就有很多免费的接口，比如：https://ip-api.com/json/?lang=zh-CN

我们就拿这个举例,打开浏览器访问下上面这个接口，是不是又返回了一大堆json字符串？

解析它：


<span class="code-snippet_outer">IP_api = 'https://ip-api.com/json/?lang=zh-CN'</span>
<span class="code-snippet_outer">IP_api = 'https://ip-api.com/json/?lang=zh-CN'</span>
IP_api = 'https://ip-api.com/json/?lang=zh-CN'
<span class="code-snippet_outer">response = requests.get(url=IP_api)</span>
<span class="code-snippet_outer">response = requests.get(url=IP_api)</span>
response = requests.get(url=IP_api)
<span class="code-snippet_outer">real_ip = json.loads(response.text)</span>
<span class="code-snippet_outer">real_ip = json.loads(response.text)</span>
real_ip = json.loads(response.text)
<span class="code-snippet_outer">real_ip = real_ip['query']</span>
<span class="code-snippet_outer">real_ip = real_ip['query']</span>
real_ip = real_ip['query']
<span class="code-snippet_outer">print(real_ip)</span>
<span class="code-snippet_outer">print(real_ip)</span>
print(real_ip)

拿到IP了吧。

那我们再校验对比一下：


<span class="code-snippet_outer"><span class="code-snippet__keyword">if</span> response:</span>
<span class="code-snippet_outer"><span class="code-snippet__keyword">if</span> response:</span>
if response:
<span class="code-snippet_outer">    response = str(response, encoding=<span class="code-snippet__string">'utf-8'</span>)</span>
<span class="code-snippet_outer">    response = str(response, encoding=<span class="code-snippet__string">'utf-8'</span>)</span>
    response = str(response, encoding='utf-8')
<span class="code-snippet_outer">    response = json.loads(response)</span>
<span class="code-snippet_outer">    response = json.loads(response)</span>
    response = json.loads(response)
<span class="code-snippet_outer">    record_ip = response[<span class="code-snippet__string">'Value'</span>]</span>
<span class="code-snippet_outer">    record_ip = response[<span class="code-snippet__string">'Value'</span>]</span>
    record_ip = response['Value']
<span class="code-snippet_outer">    <span class="code-snippet__keyword">if</span> record_ip <span class="code-snippet__keyword">and</span> real_ip == ip:</span>
<span class="code-snippet_outer">    <span class="code-snippet__keyword">if</span> record_ip <span class="code-snippet__keyword">and</span> real_ip == ip:</span>
    if record_ip and real_ip == ip:
<span class="code-snippet_outer">        <span class="code-snippet__keyword">print</span>(<span class="code-snippet__string">"IP 无需变动"</span>)</span>
<span class="code-snippet_outer">        <span class="code-snippet__keyword">print</span>(<span class="code-snippet__string">"IP 无需变动"</span>)</span>
        print("IP 无需变动")
<span class="code-snippet_outer">    <span class="code-snippet__keyword">else</span>:</span>
<span class="code-snippet_outer">    <span class="code-snippet__keyword">else</span>:</span>
    else:
<span class="code-snippet_outer">        <span class="code-snippet__keyword">print</span>(<span class="code-snippet__string">"这里需要调用updateDNS接口"</span>)</span>
<span class="code-snippet_outer">        <span class="code-snippet__keyword">print</span>(<span class="code-snippet__string">"这里需要调用updateDNS接口"</span>)</span>
        print("这里需要调用updateDNS接口")