她是我在互联网某处找到的一个花哨的。对其进行了轻微修复以适合并正确输出 tun (vpn) 设备。
#!/usr/bin/python
from socket import AF_INET, AF_INET6, inet_ntop
from ctypes import (
Structure, Union, POINTER,
pointer, get_errno, cast,
c_ushort, c_byte, c_void_p, c_char_p, c_uint, c_int, c_uint16, c_uint32
)
import ctypes.util
import ctypes
class struct_sockaddr(Structure):
_fields_ = [
('sa_family', c_ushort),
('sa_data', c_byte * 14),]
class struct_sockaddr_in(Structure):
_fields_ = [
('sin_family', c_ushort),
('sin_port', c_uint16),
('sin_addr', c_byte * 4)]
class struct_sockaddr_in6(Structure):
_fields_ = [
('sin6_family', c_ushort),
('sin6_port', c_uint16),
('sin6_flowinfo', c_uint32),
('sin6_addr', c_byte * 16),
('sin6_scope_id', c_uint32)]
class union_ifa_ifu(Union):
_fields_ = [
('ifu_broadaddr', POINTER(struct_sockaddr)),
('ifu_dstaddr', POINTER(struct_sockaddr)),]
class struct_ifaddrs(Structure):
pass
struct_ifaddrs._fields_ = [
('ifa_next', POINTER(struct_ifaddrs)),
('ifa_name', c_char_p),
('ifa_flags', c_uint),
('ifa_addr', POINTER(struct_sockaddr)),
('ifa_netmask', POINTER(struct_sockaddr)),
('ifa_ifu', union_ifa_ifu),
('ifa_data', c_void_p),]
libc = ctypes.CDLL(ctypes.util.find_library('c'))
def ifap_iter(ifap):
ifa = ifap.contents
while True:
yield ifa
if not ifa.ifa_next:
break
ifa = ifa.ifa_next.contents
def getfamaddr(sa):
family = sa.sa_family
addr = None
if family == AF_INET:
sa = cast(pointer(sa), POINTER(struct_sockaddr_in)).contents
addr = inet_ntop(family, sa.sin_addr)
elif family == AF_INET6:
sa = cast(pointer(sa), POINTER(struct_sockaddr_in6)).contents
addr = inet_ntop(family, sa.sin6_addr)
return family, addr
class NetworkInterface(object):
def __init__(self, name):
self.name = name
self.index = libc.if_nametoindex(name)
self.addresses = {}
def __str__(self):
return "%s [index=%d, IPv4=%s, IPv6=%s]" % (
self.name, self.index,
self.addresses.get(AF_INET),
self.addresses.get(AF_INET6))
def get_network_interfaces():
ifap = POINTER(struct_ifaddrs)()
result = libc.getifaddrs(pointer(ifap))
if result != 0:
raise OSError(get_errno())
del result
try:
retval = {}
for ifa in ifap_iter(ifap):
name = ifa.ifa_name
i = retval.get(name)
if not i:
i = retval[name] = NetworkInterface(name)
try:
family, addr = getfamaddr(ifa.ifa_addr.contents)
except ValueError:
family, addr = None, None
if addr:
i.addresses[family] = addr
return retval.values()
finally:
libc.freeifaddrs(ifap)
if __name__ == '__main__':
print [str(ni) for ni in get_network_interfaces()]