[英]Get network address and network mask in Python
In my Python script I need to retrieve both the IP address of the machine the script is running on and its network address and its network bytes. 在我的Python脚本中,我需要检索运行脚本的机器的IP地址及其网络地址和网络字节。
As for the IP address, I found the solution in the archive: 至于IP地址,我在档案中找到了解决方案:
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(("www.google.com",80))
myAddress = (s.getsockname()[0])
s.close()
But how should I go about finding network address and network bytes? 但是我应该如何寻找网络地址和网络字节? I need to put this information into a filter for tcpdump in the format $NetworkAddress/$NetworkBytes
, if that helps at all. 我需要以$NetworkAddress/$NetworkBytes
格式将此信息放入tcpdump的过滤器中,如果这有帮助的话。
Example: 例:
128.1.2.0/20
I can actually find it under inet
when I run ip addr
. 当我运行ip addr
时,我实际上可以在inet
下找到它。 Any easy way to get this information in Python? 在Python中获取此信息的任何简单方法?
For Linux try 对于Linux试试
iface = "eth0"
socket.inet_ntoa(fcntl.ioctl(socket.socket(socket.AF_INET, socket.SOCK_DGRAM),
35099, struct.pack('256s', iface))[20:24])
or http://github.com/rlisagor/pynetlinux 或http://github.com/rlisagor/pynetlinux
(as suggested here: Retrieving network mask in Python ) (如此处所示: 在Python中检索网络掩码 )
For Linux, Windows and MacOS consider http://alastairs-place.net/projects/netifaces/ 对于Linux,Windows和MacOS,请考虑http://alastairs-place.net/projects/netifaces/
Update: 更新:
If you need cidr (like '128.1.2.0/20'), you can use any of the related libs: http://pypi.python.org/pypi?%3Aaction=search&term=cidr&submit=search 如果你需要cidr(比如'128.1.2.0/20'),你可以使用任何相关的库: http ://pypi.python.org/pypi?%3Aaction = search&term = cidr&subsmit = search
For example netaddr
: 例如netaddr
:
>> from netaddr import IPNetwork
>> print str(IPNetwork('1.2.3.4/255.255.255.0').cidr)
1.2.3.0/24
You can retrieve any ip-related info with pyroute2 module: 您可以使用pyroute2模块检索任何与ip相关的信息:
from pyroute2 import IPDB
ip = IPDB()
print(ip.interfaces['em1'].ipaddr)
ip.release()
Or as a variant: 或作为变体:
from pyroute2 import IPRoute
ip = IPRoute()
info = [{'iface': x['index'],
'addr': x.get_attr('IFA_ADDRESS'),
'mask': x['prefixlen']} for x in ip.get_addr()]
ip.close()
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