使用Python获取Dropbox的IP地址

使用更改hosts时需要有可用的ip地址，但是网上的好多地址都过期了，所以需要自己去获取当时有用的地址。
下面是代码：（python3）

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

def GetLists(subdomain,start,end):
    ret = []
    for i in xrange(int(start),int(end)+1):
        ret.append(subdomain+str(i)+'.dropbox.com')
    return ret

def GetDlClientLists():
    return GetLists('dl-client',1,999)

def GetDlDebugLists():
    return GetLists('dl-debug',1,40)

def GetClientLists():
    return GetLists('client',1,99)

def GetNotifyLists():
    return GetLists('notify',1,10)

hosts = []
hosts.extend([
        'dropbox.com',
        'www.dropbox.com',
        'forums.dropbox.com',
        'dl.dropboxusercontent.com',
        'd.dropbox.com',
        'client-lb.dropbox.com'
        ])
hosts.extend(GetDlClientLists())
hosts.extend(GetDlDebugLists())
hosts.extend(GetClientLists())
hosts.extend(GetNotifyLists())

import subprocess
for h in hosts:
    cmd = 'nslookup -vc ' + h + ' 8.8.8.8'
    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    valid = False
    for line in p.stdout.readlines():
        if line.startswith('Non-authoritative answer:'):
            valid = True
        elif valid and line.startswith('Address:'):
            ip = line.replace('Address: ','').replace('\n','')
            print ip + ' ' + h
            with open('ip.txt', 'a+') as f:
                f.write(ip + ' ' + h + '\n')

下面是部分结果：

108.160.172.232 dropbox.com
108.160.172.200 dropbox.com
108.160.172.206 www.dropbox.com
108.160.172.238 www.dropbox.com
54.230.108.94 forums.dropbox.com
54.230.108.47 forums.dropbox.com
54.230.108.131 forums.dropbox.com
54.230.108.80 forums.dropbox.com
54.230.108.22 forums.dropbox.com
54.230.108.45 forums.dropbox.com
54.230.108.13 forums.dropbox.com
54.230.108.122 forums.dropbox.com
50.16.243.219 dl.dropboxusercontent.com
204.236.226.117 dl.dropboxusercontent.com
23.21.69.48 dl.dropboxusercontent.com
23.23.121.189 dl.dropboxusercontent.com
23.23.237.190 dl.dropboxusercontent.com
23.21.60.91 dl.dropboxusercontent.com
54.221.222.114 dl.dropboxusercontent.com
54.243.243.165 dl.dropboxusercontent.com
108.160.172.193 d.dropbox.com
108.160.172.225 d.dropbox.com

使用这些地址就可以上dropbox了。

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