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python-ip.html
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<!doctype html>
<html class="no-js" lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>
python ip操作 - CodingRoad-编程之路
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<h1>python ip操作</h1>
<div class="read-more clearfix">
<span class="date">2017/7/30</span>
<span>posted in </span>
<span class="posted-in"><a href='python.html'>python</a></span>
<span class="comments">
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<li>
<a href="#toc_0">根据ip段取所有ip</a>
</li>
<li>
<a href="#toc_1">计算ip是否在指定的段中</a>
</li>
<li>
<a href="#toc_2">django校验来源ip是否在配置的白名单中</a>
</li>
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<span id="more"></span><!-- more -->
<h2 id="toc_0">根据ip段取所有ip</h2>
<pre><code class="language-python">from IPy import IP
ip = IP('192.168.0.0/24')
print ip.len()
for i in ip:
print i
</code></pre>
<h2 id="toc_1">计算ip是否在指定的段中</h2>
<pre><code class="language-python">from IPy import IP
ip = IP('192.168.0.0/24')
print IP('192.168.0.132') in ip
</code></pre>
<h2 id="toc_2">django校验来源ip是否在配置的白名单中</h2>
<pre><code class="language-python">
iplist = """192.168.1.0/24
192.168.1.64/26
10.0.1.0/25
127.0.0.1"""
# 加载ip列表，本算法是应对配置的ip量较大的情况
# 将ip的A\B\C段做为key，ip做为value，生成一个dict，提升校验速度
# {
# '192.168.1': [IP('192.168.1.2'),
# IP('192.168.1.3'),
# IP('192.168.1.4')]
# '127.0.0': [IP('127.0.0.1')]
# }
def loadip():
res = {}
for ipstring in iplist.split("\n"):
# 提取ip的ABC段
key = '.'.join(ipstring.split('.')[:3])
if key not in res:
res[key] = []
ips = IP(ipstring)
for ip in ips:
# print ip
res[key].append(ip)
return res
# 校验request是否是合法来源
def _check_request(request):
ipwhitelist = loadip()
remoteip = request.META['REMOTE_ADDR']
key = '.'.join(remoteip.split(".")[:3])
remoteip = IP(remoteip)
if key not in ipwhitelist:
return False
if remoteip not in ipwhitelist[key]:
return False
return True
</code></pre>
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