mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
atcuno
136 lines
4.4 KiB
Python
136 lines
4.4 KiB
Python
# Volatility
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# Copyright (C) 2007-2013 Volatility Foundation
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#
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# This file is part of Volatility.
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#
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# Volatility is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# Volatility is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0
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@contact: atcuno@gmail.com
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@organization:
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"""
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import socket
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import volatility.plugins.linux.common as linux_common
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import volatility.obj as obj
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class a_ent(object):
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def __init__(self, ip, mac, devname):
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self.ip = ip
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self.mac = mac
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self.devname = devname
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# based off pykdump
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# not 100% this works, will need some testing to verify
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class linux_arp(linux_common.AbstractLinuxCommand):
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"""Print the ARP table"""
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def calculate(self):
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linux_common.set_plugin_members(self)
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neigh_tables_addr = self.addr_space.profile.get_symbol("neigh_tables")
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hasnext = True
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try:
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self.addr_space.profile.get_obj_offset("neigh_table", "next")
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except KeyError:
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hasnext = False
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if hasnext == True:
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ntables_ptr = obj.Object("Pointer", offset = neigh_tables_addr, vm = self.addr_space)
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tables = linux_common.walk_internal_list("neigh_table", "next", ntables_ptr)
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else:
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tables_arr = obj.Object(theType="Array", targetType="Pointer", offset = neigh_tables_addr, vm = self.addr_space, count = 4)
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tables = [t.dereference_as("neigh_table") for t in tables_arr]
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for ntable in tables:
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for aent in self.handle_table(ntable):
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yield aent
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def handle_table(self, ntable):
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ret = []
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# FIXME: Consider using kernel version metadata rather than checking hasattr
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if hasattr(ntable, 'hash_mask'):
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hash_size = ntable.hash_mask
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hash_table = ntable.hash_buckets
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elif hasattr(ntable.nht, 'hash_mask'):
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hash_size = ntable.nht.hash_mask
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hash_table = ntable.nht.hash_buckets
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else:
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try:
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hash_size = (1 << ntable.nht.hash_shift)
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except OverflowError:
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return []
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hash_table = ntable.nht.hash_buckets
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if not self.addr_space.is_valid_address(hash_table):
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return []
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buckets = obj.Object(theType = 'Array', offset = hash_table, vm = self.addr_space, targetType = 'Pointer', count = hash_size)
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if not buckets or hash_size > 50000:
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return []
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for i in range(hash_size):
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if buckets[i]:
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neighbor = obj.Object("neighbour", offset = buckets[i], vm = self.addr_space)
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ret.append(self.walk_neighbor(neighbor))
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# collapse all lists into one
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return sum(ret, [])
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def walk_neighbor(self, neighbor):
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seen = []
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ret = []
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ctr = 0
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for n in linux_common.walk_internal_list("neighbour", "next", neighbor):
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if n.obj_offset in seen:
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break
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seen.append(n.obj_offset)
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if ctr > 1024:
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break
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ctr = ctr + 1
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# get the family from each neighbour in order to work with ipv4 and 6
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family = n.tbl.family
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if family == socket.AF_INET:
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ip = obj.Object("IpAddress", offset = n.primary_key.obj_offset, vm = self.addr_space).v()
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elif family == socket.AF_INET6:
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ip = obj.Object("Ipv6Address", offset = n.primary_key.obj_offset, vm = self.addr_space).v()
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else:
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ip = '?'
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if n.dev.is_valid():
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mac = ":".join(["{0:02x}".format(x) for x in n.ha][:n.dev.addr_len])
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devname = n.dev.name
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ret.append(a_ent(ip, mac, devname))
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return ret
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def render_text(self, outfd, data):
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for ent in data:
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outfd.write("[{0:42s}] at {1:20s} on {2:s}\n".format(ent.ip, ent.mac, ent.devname))
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