/usr/lib/python2.7/dist-packages/pydhcplib/interface.py is in python-pydhcplib 0.6.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | #!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2005, TUBITAK/UEKAE
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version. Please read the COPYING file.
#
import os
import array
import fcntl
import struct
import socket
class interface:
""" ioctl stuff """
IFNAMSIZ = 16 # interface name size
# From <bits/ioctls.h>
SIOCGIFADDR = 0x8915 # get PA address
SIOCGIFBRDADDR = 0x8919 # get broadcast PA address
SIOCGIFCONF = 0x8912 # get iface list
SIOCGIFFLAGS = 0x8913 # get flags
SIOCGIFMTU = 0x8921 # get MTU size
SIOCGIFNETMASK = 0x891b # get network PA mask
SIOCSIFADDR = 0x8916 # set PA address
SIOCSIFBRDADDR = 0x891a # set broadcast PA address
SIOCSIFFLAGS = 0x8914 # set flags
SIOCSIFMTU = 0x8922 # set MTU size
SIOCSIFNETMASK = 0x891c # set network PA mask
# From <net/if.h>
IFF_UP = 0x1 # Interface is up.
IFF_BROADCAST = 0x2 # Broadcast address valid.
IFF_DEBUG = 0x4 # Turn on debugging.
IFF_LOOPBACK = 0x8 # Is a loopback net.
IFF_POINTOPOINT = 0x10 # Interface is point-to-point link.
IFF_NOTRAILERS = 0x20 # Avoid use of trailers.
IFF_RUNNING = 0x40 # Resources allocated.
IFF_NOARP = 0x80 # No address resolution protocol.
IFF_PROMISC = 0x100 # Receive all packets.
IFF_ALLMULTI = 0x200 # Receive all multicast packets.
IFF_MASTER = 0x400 # Master of a load balancer.
IFF_SLAVE = 0x800 # Slave of a load balancer.
IFF_MULTICAST = 0x1000 # Supports multicast.
IFF_PORTSEL = 0x2000 # Can set media type.
IFF_AUTOMEDIA = 0x4000 # Auto media select active.
def __init__(self):
# create a socket to communicate with system
self.sockfd = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
def _ioctl(self, func, args):
return fcntl.ioctl(self.sockfd.fileno(), func, args)
def _call(self, ifname, func, ip = None):
if ip is None:
data = (ifname + '\0'*32)[:32]
else:
ifreq = (ifname + '\0' * self.IFNAMSIZ)[:self.IFNAMSIZ]
data = struct.pack("16si4s10x", ifreq, socket.AF_INET, socket.inet_aton(ip))
try:
result = self._ioctl(func, data)
except IOError:
return None
return result
def getInterfaceList(self):
""" Get all interface names in a list """
# get interface list
buffer = array.array('c', '\0' * 1024)
ifconf = struct.pack("iP", buffer.buffer_info()[1], buffer.buffer_info()[0])
result = self._ioctl(self.SIOCGIFCONF, ifconf)
# loop over interface names
iflist = []
size, ptr = struct.unpack("iP", result)
for idx in range(0, size, 32):
ifconf = buffer.tostring()[idx:idx+32]
name, dummy = struct.unpack("16s16s", ifconf)
name, dummy = name.split('\0', 1)
iflist.append(name)
return iflist
def getAddr(self, ifname):
""" Get the inet addr for an interface """
result = self._call(ifname, self.SIOCGIFADDR)
return socket.inet_ntoa(result[20:24])
def getNetmask(self, ifname):
""" Get the netmask for an interface """
result = self._call(ifname, self.SIOCGIFNETMASK)
return socket.inet_ntoa(result[20:24])
def getBroadcast(self, ifname):
""" Get the broadcast addr for an interface """
result = self._call(ifname, self.SIOCGIFBRDADDR)
return socket.inet_ntoa(result[20:24])
def getStatus(self, ifname):
""" Check whether interface is UP """
result = self._call(ifname, self.SIOCGIFFLAGS)
flags, = struct.unpack('H', result[16:18])
return (flags & self.IFF_UP) != 0
def getMTU(self, ifname):
""" Get the MTU size of an interface """
data = self._call(ifname, self.SIOCGIFMTU)
mtu = struct.unpack("16si12x", data)[1]
return mtu
def setAddr(self, ifname, ip):
""" Set the inet addr for an interface """
result = self._call(ifname, self.SIOCSIFADDR, ip)
if result and socket.inet_ntoa(result[20:24]) is ip:
return True
else:
return None
def setNetmask(self, ifname, ip):
""" Set the netmask for an interface """
result = self._call(ifname, self.SIOCSIFNETMASK, ip)
if result and socket.inet_ntoa(result[20:24]) is ip:
return True
else:
return None
def setBroadcast(self, ifname, ip):
""" Set the broadcast addr for an interface """
result = self._call(ifname, self.SIOCSIFBRDADDR, ip)
if socket.inet_ntoa(result[20:24]) is ip:
return True
else:
return None
def setStatusDown(self, ifname):
""" Set interface status (UP/DOWN) """
ifreq = (ifname + '\0' * self.IFNAMSIZ)[:self.IFNAMSIZ]
result = self._call(ifname, self.SIOCGIFFLAGS)
flags, = struct.unpack('H', result[16:18])
flags &= ~self.IFF_UP
data = struct.pack("16sh", ifreq, flags)
result = self._ioctl(self.SIOCSIFFLAGS, data)
return result
def setStatusUp(self, ifname):
""" Set interface status (UP/DOWN) """
ifreq = (ifname + '\0' * self.IFNAMSIZ)[:self.IFNAMSIZ]
flags = self.IFF_UP
flags |= self.IFF_RUNNING
flags |= self.IFF_BROADCAST
flags |= self.IFF_MULTICAST
flags &= ~self.IFF_NOARP
flags &= ~self.IFF_PROMISC
data = struct.pack("16sh", ifreq, flags)
result = self._ioctl(self.SIOCSIFFLAGS, data)
return result
def setMTU(self, ifname, mtu):
""" Set the MTU size of an interface """
ifreq = (ifname + '\0' * self.IFNAMSIZ)[:self.IFNAMSIZ]
data = struct.pack("16si", ifreq, mtu)
result = self._ioctl(self.SIOCSIFMTU, data)
if struct.unpack("16si", result)[1] is mtu:
return True
else:
return None
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