inet6.py revision 429082158fc01432c9d5e4a3de775f7a6e07a021
1c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil#! /usr/bin/env python 2c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 3c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## ## 4614f54fc4b269030ba2934b6c353fb43de886e04Phil## inet6.py --- IPv6 support for Scapy ## 5614f54fc4b269030ba2934b6c353fb43de886e04Phil## see http://natisbad.org/IPv6/ ## 6614f54fc4b269030ba2934b6c353fb43de886e04Phil## for more informations ## 7c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## ## 8c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## Copyright (C) 2005 Guillaume Valadon <guedou@hongo.wide.ad.jp> ## 9c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## Arnaud Ebalard <arnaud.ebalard@eads.net> ## 10c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## ## 11c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## This program is free software; you can redistribute it and/or modify it ## 12c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## under the terms of the GNU General Public License version 2 as ## 13614f54fc4b269030ba2934b6c353fb43de886e04Phil## published by the Free Software Foundation. ## 14c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## ## 15c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## This program is distributed in the hope that it will be useful, but ## 16c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## WITHOUT ANY WARRANTY; without even the implied warranty of ## 17c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## 18c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## General Public License for more details. ## 19c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## ## 20c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 21c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 220ce149b41a10223c75f33a135d0a7ddc6bd2e022Dirk Loss""" 230ce149b41a10223c75f33a135d0a7ddc6bd2e022Dirk LossIPv6 (Internet Protocol v6). 240ce149b41a10223c75f33a135d0a7ddc6bd2e022Dirk Loss""" 250ce149b41a10223c75f33a135d0a7ddc6bd2e022Dirk Loss 26614f54fc4b269030ba2934b6c353fb43de886e04Phil 27d7dd2222e18718ea755fe780e8ef422901ba5b0bPhilimport socket 28d7dd2222e18718ea755fe780e8ef422901ba5b0bPhilif not socket.has_ipv6: 29d7dd2222e18718ea755fe780e8ef422901ba5b0bPhil raise socket.error("can't use AF_INET6, IPv6 is disabled") 3081dfaee354bef2beea581a3c83a33c856ade45e5Dirk Lossif not hasattr(socket, "IPPROTO_IPV6"): 3181dfaee354bef2beea581a3c83a33c856ade45e5Dirk Loss # Workaround for http://bugs.python.org/issue6926 3281dfaee354bef2beea581a3c83a33c856ade45e5Dirk Loss socket.IPPROTO_IPV6 = 41 33d7dd2222e18718ea755fe780e8ef422901ba5b0bPhil 34d7dd2222e18718ea755fe780e8ef422901ba5b0bPhilfrom scapy.config import conf 35614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.layers.l2 import * 36614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.layers.inet import * 37614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.fields import * 38614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.packet import * 39614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.volatile import * 40614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.sendrecv import sr,sr1,srp1 41614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.as_resolvers import AS_resolver_riswhois 42614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.supersocket import SuperSocket,L3RawSocket 43614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.arch import * 4472461d0c00f182855906e57dcf6223aa9f1d8b31Philfrom scapy.utils6 import * 45c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 46c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 47c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 48c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Helpers ## 49c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 50c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 51c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef get_cls(name, fallback_cls): 52614f54fc4b269030ba2934b6c353fb43de886e04Phil return globals().get(name, fallback_cls) 53c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 54c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 55c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########################## 56c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## Neighbor cache stuff ## 57c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########################## 58c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 59f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Philconf.netcache.new_cache("in6_neighbor", 120) 60c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 61c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef neighsol(addr, src, iface, timeout=1, chainCC=0): 62c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 63c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Sends an ICMPv6 Neighbor Solicitation message to get the MAC address 64c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil of the neighbor with specified IPv6 address addr. 'src' address is 65c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil used as source of the message. Message is sent on iface. By default, 66c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil timeout waiting for an answer is 1 second. 67c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 68c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If no answer is gathered, None is returned. Else, the answer is 69c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil returned (ethernet frame). 70c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 71c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 72c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nsma = in6_getnsma(inet_pton(socket.AF_INET6, addr)) 73c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = inet_ntop(socket.AF_INET6, nsma) 74c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dm = in6_getnsmac(nsma) 75c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = Ether(dst=dm)/IPv6(dst=d, src=src, hlim=255) 76c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p /= ICMPv6ND_NS(tgt=addr) 77c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p /= ICMPv6NDOptSrcLLAddr(lladdr=get_if_hwaddr(iface)) 78c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = srp1(p,type=ETH_P_IPV6, iface=iface, timeout=1, verbose=0, 79c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil chainCC=chainCC) 80c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 81c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 82c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 83c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef getmacbyip6(ip6, chainCC=0): 84c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 85c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Returns the mac address to be used for provided 'ip6' peer. 86c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil neighborCache.get() method is used on instantiated neighbor cache. 87c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Resolution mechanism is described in associated doc string. 88c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 89c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (chainCC parameter value ends up being passed to sending function 90c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil used to perform the resolution, if needed) 91c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 92f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 93f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if in6_ismaddr(ip6): # Multicast 94f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil mac = in6_getnsmac(inet_pton(socket.AF_INET6, ip6)) 95f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return mac 96f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 97f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil iff,a,nh = conf.route6.route(ip6, dev=conf.iface6) 98f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 99f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if iff == LOOPBACK_NAME: 100f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return "ff:ff:ff:ff:ff:ff" 101f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 102f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if nh != '::': 103f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil ip6 = nh # Found next hop 104f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 105f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil mac = conf.netcache.in6_neighbor.get(ip6) 106f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if mac: 107f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return mac 108f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 109f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil res = neighsol(ip6, a, iff, chainCC=chainCC) 110f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 111f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if res is not None: 112429082158fc01432c9d5e4a3de775f7a6e07a021Guillaume Valadon if ICMPv6NDOptDstLLAddr in res: 113429082158fc01432c9d5e4a3de775f7a6e07a021Guillaume Valadon mac = res[ICMPv6NDOptDstLLAddr].lladdr 114429082158fc01432c9d5e4a3de775f7a6e07a021Guillaume Valadon else: 115429082158fc01432c9d5e4a3de775f7a6e07a021Guillaume Valadon mac = res.src 116f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil conf.netcache.in6_neighbor[ip6] = mac 117f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return mac 118f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 119f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return None 120c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 121c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 122c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 123c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 124c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### IPv6 addresses manipulation routines ### 125c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 126c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 127c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass Net6(Gen): # syntax ex. fec0::/126 129c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """Generate a list of IPv6s from a network address or a name""" 130c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ipv6" 131c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ipaddress = re.compile(r"^([a-fA-F0-9:]+)(/[1]?[0-3]?[0-9])?$") 132c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 133c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, net): 134c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.repr = net 135c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 136c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = net.split('/')+["128"] 137c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not self.ipaddress.match(net): 138c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp[0]=socket.getaddrinfo(tmp[0], None, socket.AF_INET6)[0][-1][0] 139c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 140c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil netmask = int(tmp[1]) 14177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil self.net = inet_pton(socket.AF_INET6, tmp[0]) 142c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.mask = in6_cidr2mask(netmask) 14377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil self.plen = netmask 144c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 145c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __iter__(self): 146c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m8(i): 14777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if i % 8 == 0: 148c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return i 149c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tuple = filter(lambda x: m8(x), xrange(8, 129)) 150c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 151c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a = in6_and(self.net, self.mask) 152c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = map(lambda x: x, struct.unpack('16B', a)) 153c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 154c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def parse_digit(a, netmask): 155c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil netmask = min(8,max(netmask,0)) 156c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a = (int(a) & (0xffL<<netmask),(int(a) | (0xffL>>(8-netmask)))+1) 157c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return a 158c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.parsed = map(lambda x,y: parse_digit(x,y), tmp, map(lambda x,nm=self.plen: x-nm, tuple)) 159c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 160c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def rec(n, l): 16177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if n and n % 2 == 0: 16277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sep = ':' 16377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil else: 164c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil sep = '' 165c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if n == 16: 16677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return l 167c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 16877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ll = [] 16977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for i in xrange(*self.parsed[n]): 17077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for y in l: 17177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ll += [y+sep+'%.2x'%i] 17277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return rec(n+1, ll) 173c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 174c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return iter(rec(0, [''])) 175c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 176c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __repr__(self): 177c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "<Net6 %s>" % self.repr 178c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 179c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 180c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 181c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 182c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 183c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 184c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 185c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 186c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### IPv6 Class ### 187c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 188c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 189c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 190c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IP6Field(Field): 191c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default): 192c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Field.__init__(self, name, default, "16s") 193c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def h2i(self, pkt, x): 194c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 195c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 19677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil x = in6_ptop(x) 197c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except socket.error: 198c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = Net6(x) 199c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif type(x) is list: 200c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = map(Net6, x) 201c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 202c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 203c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return inet_pton(socket.AF_INET6, x) 204c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m2i(self, pkt, x): 205c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return inet_ntop(socket.AF_INET6, x) 206c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def any2i(self, pkt, x): 207c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.h2i(pkt,x) 208c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 209c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 21077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return self.i2h(pkt,x) 21177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil elif not isinstance(x, Net6) and not type(x) is list: 21277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if in6_isaddrTeredo(x): # print Teredo info 21377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil server, flag, maddr, mport = teredoAddrExtractInfo(x) 21477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return "%s [Teredo srv: %s cli: %s:%s]" % (self.i2h(pkt, x), server, maddr,mport) 21577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil elif in6_isaddr6to4(x): # print encapsulated address 216c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil vaddr = in6_6to4ExtractAddr(x) 21777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return "%s [6to4 GW: %s]" % (self.i2h(pkt, x), vaddr) 21877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return self.i2h(pkt, x) # No specific information to return 21951db482d4ed62a5eb7b70c0c4f7a3954d41b6165Phil def randval(self): 22051db482d4ed62a5eb7b70c0c4f7a3954d41b6165Phil return RandIP6() 221c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 222c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass SourceIP6Field(IP6Field): 223c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, dstname): 224c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field.__init__(self, name, None) 225c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.dstname = dstname 226c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 227c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 228c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dst=getattr(pkt,self.dstname) 229c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil iff,x,nh = conf.route6.route(dst) 230c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return IP6Field.i2m(self, pkt, x) 231c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2h(self, pkt, x): 232c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 233c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dst=getattr(pkt,self.dstname) 234c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(dst,Gen): 235c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r = map(conf.route6.route, dst) 236c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r.sort() 237c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if r[0] == r[-1]: 238c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x=r[0][1] 239c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 240c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("More than one possible route for %s"%repr(dst)) 241c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return None 242c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 24377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil iff,x,nh = conf.route6.route(dst) 244c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return IP6Field.i2h(self, pkt, x) 245c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 246c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilipv6nh = { 0:"Hop-by-Hop Option Header", 247c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4:"IP", 248c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6:"TCP", 249c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17:"UDP", 250c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 41:"IPv6", 251c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 43:"Routing Header", 252c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 44:"Fragment Header", 253c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 47:"GRE", 254c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 50:"ESP Header", 255c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 51:"AH Header", 256c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 58:"ICMPv6", 257c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 59:"No Next Header", 258c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 60:"Destination Option Header", 259c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 135:"Mobility Header"} 260c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 261c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilipv6nhcls = { 0: "IPv6ExtHdrHopByHop", 262c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "IP", 263c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "TCP", 264c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17: "UDP", 265c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 43: "IPv6ExtHdrRouting", 266c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 44: "IPv6ExtHdrFragment", 267c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #50: "IPv6ExtHrESP", 268c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #51: "IPv6ExtHdrAH", 26977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 58: "ICMPv6Unknown", 270c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 59: "Raw", 271c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 60: "IPv6ExtHdrDestOpt" } 272c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 273c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IP6ListField(StrField): 274c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil islist = 1 275c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, count_from=None, length_from=None): 276c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if default is None: 277c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil default = [] 278c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField.__init__(self, name, default) 279c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.count_from = count_from 280c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.length_from = length_from 281c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 282c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 283c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 16*len(i) 284c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 285c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2count(self, pkt, i): 286c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(i) is list: 287c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(i) 288c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 289c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 290c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 291c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = l = None 292c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.length_from is not None: 293c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 294c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.count_from is not None: 295c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = self.count_from(pkt) 296c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 297c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil lst = [] 298c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ret = "" 299c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = s 300c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is not None: 301c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain,ret = s[:l],s[l:] 302c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while remain: 303c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c is not None: 304c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c <= 0: 305c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 306c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c -= 1 307c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = inet_ntop(socket.AF_INET6, remain[:16]) 308c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil lst.append(addr) 309c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = remain[16:] 310c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return remain+ret,lst 311c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 312c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 31377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil s = '' 314c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for y in x: 315c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 316c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil y = inet_pton(socket.AF_INET6, y) 317c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 318c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil y = socket.getaddrinfo(y, None, socket.AF_INET6)[0][-1][0] 319c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil y = inet_pton(socket.AF_INET6, y) 320c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += y 32177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return s 322c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 323c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self,pkt,x): 324c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = [] 32577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if x == None: 32677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return "[]" 32777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for y in x: 32877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil s.append('%s' % y) 329c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "[ %s ]" % (", ".join(s)) 33077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 33177132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass _IPv6GuessPayload: 332c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Dummy class that implements guess_payload_class() for IPv6" 333c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def default_payload_class(self,p): 334c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 58 and len(p) > 2: 335c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = ord(p[0]) 336c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 139 or t == 140: # Node Info Query 337c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _niquery_guesser(p) 338c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return get_cls(icmp6typescls.get(t,"Raw"), "Raw") 339c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.nh == 135 and len(p) > 3: 340c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _mip6_mhtype2cls.get(ord(p[2]), MIP6MH_Generic) 34177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil else: 34277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return get_cls(ipv6nhcls.get(self.nh,"Raw"), "Raw") 343c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 344c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6(_IPv6GuessPayload, Packet, IPTools): 345c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6" 346c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ BitField("version" , 6 , 4), 347c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("tc", 0, 8), #TODO: IPv6, ByteField ? 34877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("fl", 0, 20), 34977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ShortField("plen", None), 350c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("nh", 59, ipv6nh), 351c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("hlim", 64), 352c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil SourceIP6Field("src", "dst"), # dst is for src @ selection 353c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("dst", "::1") ] 354614f54fc4b269030ba2934b6c353fb43de886e04Phil 355614f54fc4b269030ba2934b6c353fb43de886e04Phil def route(self): 356614f54fc4b269030ba2934b6c353fb43de886e04Phil dst = self.dst 357614f54fc4b269030ba2934b6c353fb43de886e04Phil if isinstance(dst,Gen): 358614f54fc4b269030ba2934b6c353fb43de886e04Phil dst = iter(dst).next() 359614f54fc4b269030ba2934b6c353fb43de886e04Phil return conf.route6.route(dst) 360614f54fc4b269030ba2934b6c353fb43de886e04Phil 361c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 362c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%s > %s (%i)" % (self.src,self.dst, self.nh) 363c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 364c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, p, pay): 36577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil p += pay 366c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.plen is None: 367c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = len(p) - 40 368c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = p[:4]+struct.pack("!H", l)+p[6:] 369c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 370c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 371c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 372c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.plen 373c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:l], s[l:] 374c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 375c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 376c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 58 and isinstance(self.payload, _ICMPv6): 377c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.payload.type < 128: 378c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.hashret() 379c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif (self.payload.type in [133,134,135,136,144,145]): 380c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("B", self.nh)+self.payload.hashret() 381c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 38277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil nh = self.nh 38377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = self.dst 38477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ss = self.src 385c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 43 and isinstance(self.payload, IPv6ExtHdrRouting): 38677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # With routing header, the destination is the last 38777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # address of the IPv6 list if segleft > 0 38877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil nh = self.payload.nh 38977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil try: 39077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = self.addresses[-1] 39177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil except IndexError: 39277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = '::1' 39377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # TODO: big bug with ICMPv6 error messages as the destination of IPerror6 39477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # could be anything from the original list ... 39577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if 1: 39677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = inet_pton(socket.AF_INET6, sd) 39777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for a in self.addresses: 39877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil a = inet_pton(socket.AF_INET6, a) 39977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = strxor(sd, a) 40077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = inet_ntop(socket.AF_INET6, sd) 401c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 402c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 44 and isinstance(self.payload, IPv6ExtHdrFragment): 403c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = self.payload.nh 404c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 405c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 0 and isinstance(self.payload, IPv6ExtHdrHopByHop): 406c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = self.payload.nh 407c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 408c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): 409c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil foundhao = None 410c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for o in self.payload.options: 411c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(o, HAO): 412c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil foundhao = o 413c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if foundhao: 414c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = self.payload.nh # XXX what if another extension follows ? 415c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ss = foundhao.hoa 416c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 417c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if conf.checkIPsrc and conf.checkIPaddr: 418c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil sd = inet_pton(socket.AF_INET6, sd) 419c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ss = inet_pton(socket.AF_INET6, self.src) 420c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("B",nh)+self.payload.hashret() 421c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 422c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("B", nh)+self.payload.hashret() 423c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 424c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 425c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not isinstance(other, IPv6): # self is reply, other is request 426c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 427c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if conf.checkIPaddr: 428c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ss = inet_pton(socket.AF_INET6, self.src) 429c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil sd = inet_pton(socket.AF_INET6, self.dst) 430c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil os = inet_pton(socket.AF_INET6, other.src) 431c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil od = inet_pton(socket.AF_INET6, other.dst) 43277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # request was sent to a multicast address (other.dst) 433c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Check reply destination addr matches request source addr (i.e 434c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # sd == os) except when reply is multicasted too 435c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX test mcast scope matching ? 436c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if in6_ismaddr(other.dst): 437c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if in6_ismaddr(self.dst): 438c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if ((od == sd) or 439c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (in6_isaddrllallnodes(self.dst) and in6_isaddrllallservers(other.dst))): 440c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload) 441c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 442c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (os == sd): 443c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload) 444c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 445c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif (sd != os): # or ss != od): <- removed for ICMP errors 446c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 447c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 58 and isinstance(self.payload, _ICMPv6) and self.payload.type < 128: 448c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # ICMPv6 Error message -> generated by IPv6 packet 449c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Note : at the moment, we jump the ICMPv6 specific class 450c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # to call answers() method of erroneous packet (over 451c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # initial packet). There can be cases where an ICMPv6 error 452c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # class could implement a specific answers method that perform 453c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a specific task. Currently, don't see any use ... 454c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.answers(other) 455c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 0 and isinstance(other.payload, IPv6ExtHdrHopByHop): 456c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload.payload) 457c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 44 and isinstance(other.payload, IPv6ExtHdrFragment): 458c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload.payload) 459c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrRouting): 460c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload.payload) # Buggy if self.payload is a IPv6ExtHdrRouting 461c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 60 and isinstance(other.payload, IPv6ExtHdrDestOpt): 462c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.answers(other.payload.payload) 463c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): # BU in reply to BRR, for instance 464c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.answers(other.payload) 465c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 466c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (self.nh != other.nh): 467c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 468c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload) 469c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 470614f54fc4b269030ba2934b6c353fb43de886e04Phil 471614f54fc4b269030ba2934b6c353fb43de886e04Philconf.neighbor.register_l3(Ether, IPv6, lambda l2,l3: getmacbyip6(l3.dst)) 472614f54fc4b269030ba2934b6c353fb43de886e04Phil 473c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 474c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPerror6(IPv6): 475c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 in ICMPv6" 476c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 477c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not isinstance(other, IPv6): 478c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 47977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = inet_pton(socket.AF_INET6, self.dst) 48077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ss = inet_pton(socket.AF_INET6, self.src) 48177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil od = inet_pton(socket.AF_INET6, other.dst) 48277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil os = inet_pton(socket.AF_INET6, other.src) 483c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 48477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # Make sure that the ICMPv6 error is related to the packet scapy sent 48577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if isinstance(self.underlayer, _ICMPv6) and self.underlayer.type < 128: 486c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 487c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # find upper layer for self (possible citation) 488c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup = self.payload 489c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while selfup is not None and isinstance(selfup, _IPv6ExtHdr): 490c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup = selfup.payload 491c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 492c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # find upper layer for other (initial packet). Also look for RH 493c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup = other.payload 494c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil request_has_rh = False 495c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while otherup is not None and isinstance(otherup, _IPv6ExtHdr): 496c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(otherup, IPv6ExtHdrRouting): 497c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil request_has_rh = True 498c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup = otherup.payload 499c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 50077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if ((ss == os and sd == od) or # <- Basic case 501c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (ss == os and request_has_rh)): # <- Request has a RH : 502c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # don't check dst address 503c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 504c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Let's deal with possible MSS Clamping 505c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(selfup, TCP) and 506c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(otherup, TCP) and 507c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.options != otherup.options): # seems clamped 508c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 509c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Save fields modified by MSS clamping 510c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_otherup_opts = otherup.options 511c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_otherup_cksum = otherup.chksum 512c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_otherup_dataofs = otherup.dataofs 513c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_selfup_opts = selfup.options 514c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_selfup_cksum = selfup.chksum 515c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_selfup_dataofs = selfup.dataofs 516c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 517c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Nullify them 518c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.options = [] 519c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.chksum = 0 520c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.dataofs = 0 521c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.options = [] 522c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.chksum = 0 523c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.dataofs = 0 524c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 525c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Test it and save result 526c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s1 = str(selfup) 527c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s2 = str(otherup) 528c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = min(len(s1), len(s2)) 529c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = s1[:l] == s2[:l] 530c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 531c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # recall saved values 532c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.options = old_otherup_opts 533c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.chksum = old_otherup_cksum 534c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.dataofs = old_otherup_dataofs 535c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.options = old_selfup_opts 536c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.chksum = old_selfup_cksum 537c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.dataofs = old_selfup_dataofs 538c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 539c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 540c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 541c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s1 = str(selfup) 542c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s2 = str(otherup) 543c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = min(len(s1), len(s2)) 544c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s1[:l] == s2[:l] 545c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 546c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 547c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 548c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 549c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return Packet.mysummary(self) 550c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 551c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 552c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 553c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 554c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Upper Layer Checksum computation ### 555c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 556c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 557c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 558c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass PseudoIPv6(Packet): # IPv6 Pseudo-header for checksum computation 559c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Pseudo IPv6 Header" 560c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ IP6Field("src", "::"), 561c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("dst", "::"), 56277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ShortField("uplen", None), 563c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("zero", 0, 24), 564c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("nh", 0) ] 565c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 566c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef in6_chksum(nh, u, p): 567c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 568c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Performs IPv6 Upper Layer checksum computation. Provided parameters are: 569c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 570c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - 'nh' : value of upper layer protocol 571c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - 'u' : upper layer instance (TCP, UDP, ICMPv6*, ). Instance must be 572c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil provided with all under layers (IPv6 and all extension headers, 573c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for example) 574c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - 'p' : the payload of the upper layer provided as a string 575c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 576c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Functions operate by filling a pseudo header class instance (PseudoIPv6) 577c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil with 578c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - Next Header value 579c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - the address of _final_ destination (if some Routing Header with non 580c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil segleft field is present in underlayer classes, last address is used.) 581c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - the address of _real_ source (basically the source address of an 582c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IPv6 class instance available in the underlayer or the source address 583c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil in HAO option if some Destination Option header found in underlayer 584c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil includes this option). 585c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - the length is the length of provided payload string ('p') 586c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 587c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 588c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6 = PseudoIPv6() 589c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6.nh = nh 590c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil rthdr = 0 591c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil hahdr = 0 592c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil final_dest_addr_found = 0 593c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while u != None and not isinstance(u, IPv6): 59477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if (isinstance(u, IPv6ExtHdrRouting) and 59577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil u.segleft != 0 and len(u.addresses) != 0 and 596c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil final_dest_addr_found == 0): 59777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil rthdr = u.addresses[-1] 598c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil final_dest_addr_found = 1 59977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil elif (isinstance(u, IPv6ExtHdrDestOpt) and (len(u.options) == 1) and 600c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(u.options[0], HAO)): 601c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil hahdr = u.options[0].hoa 60277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil u = u.underlayer 603c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if u is None: 60477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil warning("No IPv6 underlayer to compute checksum. Leaving null.") 60577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 0 60677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if hahdr: 60777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ph6.src = hahdr 608c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 609c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6.src = u.src 610c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if rthdr: 61177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ph6.dst = rthdr 612c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 61377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ph6.dst = u.dst 614c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6.uplen = len(p) 615c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6s = str(ph6) 616c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return checksum(ph6s+p) 617c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 618c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 619c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 620c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 621c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Extension Headers ### 622c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 623c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 624c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 625c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 626c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Inherited by all extension header classes 627c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _IPv6ExtHdr(_IPv6GuessPayload, Packet): 628c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Abstract IPV6 Option Header' 629c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil aliastypes = [IPv6, IPerror6] # TODO ... 630c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 631c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 632c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil#################### IPv6 options for Extension Headers ##################### 633c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 634c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_hbhopts = { 0x00: "Pad1", 635c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x01: "PadN", 636c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x04: "Tunnel Encapsulation Limit", 637c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x05: "Router Alert", 638c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x06: "Quick-Start", 639c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xc2: "Jumbo Payload", 640c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xc9: "Home Address Option" } 641c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 642c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _OTypeField(ByteEnumField): 643c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 644c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Modified BytEnumField that displays information regarding the IPv6 option 645c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil based on its option type value (What should be done by nodes that process 646c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil the option if they do not understand it ...) 647c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 648c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil It is used by Jumbo, Pad1, PadN, RouterAlert, HAO options 649c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 650c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pol = {0x00: "00: skip", 651c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x40: "01: discard", 652c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x80: "10: discard+ICMP", 653c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xC0: "11: discard+ICMP not mcast"} 654c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 655c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil enroutechange = {0x00: "0: Don't change en-route", 656c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x20: "1: May change en-route" } 657c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 658c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 659c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = self.i2s.get(x, repr(x)) 660c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil polstr = self.pol[(x & 0xC0)] 661c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil enroutechangestr = self.enroutechange[(x & 0x20)] 662c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%s [%s, %s]" % (s, polstr, enroutechangestr) 663c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 664c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass HBHOptUnknown(Packet): # IPv6 Hop-By-Hop Option 665c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Scapy6 Unknown Option" 666c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0x01, _hbhopts), 667c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("optlen", None, length_of="optdata", fmt="B"), 668c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("optdata", "", 669c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.optlen) ] 670c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # By default, no alignment requirement 671c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 672c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil As specified in section 4.2 of RFC 2460, every options has 673c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil an alignment requirement ususally expressed xn+y, meaning 674c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil the Option Type must appear at an integer multiple of x octest 675c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil from the start of the header, plus y octet. 676c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 677c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil That function is provided the current position from the 678c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil start of the header and returns required padding length. 679c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 680c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 681c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 682c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass Pad1(Packet): # IPv6 Hop-By-Hop Option 683c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Pad1" 684c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ _OTypeField("otype", 0x00, _hbhopts) ] 685c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # No alignment requirement 686c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 687c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 688c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass PadN(Packet): # IPv6 Hop-By-Hop Option 689c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "PadN" 690c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0x01, _hbhopts), 691c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("optlen", None, length_of="optdata", fmt="B"), 692c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("optdata", "", 693c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.optlen)] 694c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # No alignment requirement 695c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 696c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 697c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass RouterAlert(Packet): # RFC 2711 - IPv6 Hop-By-Hop Option 698c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Router Alert" 699c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0x05, _hbhopts), 700c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optlen", 2), 701c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortEnumField("value", None, 702c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil { 0: "Datagram contains a MLD message", 703c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "Datagram contains RSVP message", 704c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Datagram contains an Active Network message" }) ] 705c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO : Check IANA has not defined new values for value field of RouterAlertOption 706c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO : now that we have that option, we should do something in MLD class that need it 707c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # alignment requirement : 2n+0 708c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 2 ; y = 0 709c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 710c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 711c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 712c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass Jumbo(Packet): # IPv6 Hop-By-Hop Option 713c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Jumbo Payload" 714c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0xC2, _hbhopts), 715c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optlen", 4), 716c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("jumboplen", None) ] 717c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # alignment requirement : 4n+2 718c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 4 ; y = 2 719c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 720c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 721c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 722c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass HAO(Packet): # IPv6 Destination Options Header Option 723c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Home Address Option" 724c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0xC9, _hbhopts), 725c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optlen", 16), 726c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("hoa", "::") ] 727c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # alignment requirement : 8n+6 728c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 6 729c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 730c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 731c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 732c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_hbhoptcls = { 0x00: Pad1, 733c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x01: PadN, 734c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x05: RouterAlert, 735c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xC2: Jumbo, 736c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xC9: HAO } 737c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 738c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 739c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil######################## Hop-by-Hop Extension Header ######################## 740c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 741c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _HopByHopOptionsField(PacketListField): 742c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil islist = 1 743c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil holds_packet = 1 744c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, cls, curpos, count_from=None, length_from=None): 745c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.curpos = curpos 746c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil PacketListField.__init__(self, name, default, cls, count_from=count_from, length_from=length_from) 747c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 748c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 749c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = len(self.i2m(pkt, i)) 750c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return l 751c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 752c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2count(self, pkt, i): 753c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(i) is list: 754c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(i) 755c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 756c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 757c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 758c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = l = None 759c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.length_from is not None: 760c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 761c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.count_from is not None: 762c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = self.count_from(pkt) 763c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 764c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt = [] 765c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ret = "" 766c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = s 767c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is not None: 768c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x,ret = s[:l],s[l:] 769c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while x: 770c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c is not None: 771c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c <= 0: 772c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 773c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c -= 1 774c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil o = ord(x[0]) # Option type 775c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = self.cls 776c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if _hbhoptcls.has_key(o): 777c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = _hbhoptcls[o] 778c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 779c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = cls(x) 780c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 781c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = self.cls(x) 782c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt.append(op) 7837b3e970663abd72697e17b70aba9943ae0dad404Phil if isinstance(op.payload, conf.raw_layer): 784c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = op.payload.load 785c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(op.payload) 786c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 787c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "" 788c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x+ret,opt 789c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 790c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 791c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = None 792c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 793c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = getattr(pkt, "autopad") # Hack : 'autopad' phantom field 794c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 795c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = 1 796c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 797c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not autopad: 798c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "".join(map(str, x)) 799c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 800c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos = self.curpos 801c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = "" 802c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in x: 803c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = p.alignment_delta(curpos) 804c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += d 805c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 806c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 807c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 808c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 809c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pstr = str(p) 810c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += len(pstr) 811c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += pstr 812c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 813c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Let's make the class including our option field 814c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a multiple of 8 octets long 815c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = curpos % 8 816c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 0: 817c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 818c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = 8 - d 819c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 820c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 821c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 822c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 823c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 824c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 825c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 826c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 827c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s+self.i2m(pkt, val) 828c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 829c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _PhantomAutoPadField(ByteField): 830c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 831c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 832c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 833c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 834c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, 1 835c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 836c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 837c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x: 838c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "On" 839c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "Off" 840c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 841c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 842c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6ExtHdrHopByHop(_IPv6ExtHdr): 843c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Extension Header - Hop-by-Hop Options Header" 844c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 845c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="options", fmt="B", 846c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: (x+2+7)/8 - 1), 847c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 84877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil _HopByHopOptionsField("options", [], HBHOptUnknown, 2, 849c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: (8*(pkt.len+1))-2) ] 850c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 0 }} 851c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 852c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 853c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil######################## Destination Option Header ########################## 854c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 855c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6ExtHdrDestOpt(_IPv6ExtHdr): 856c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Extension Header - Destination Options Header" 857c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 858c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="options", fmt="B", 859c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: (x+2+7)/8 - 1), 860c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 86177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil _HopByHopOptionsField("options", [], HBHOptUnknown, 2, 862c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: (8*(pkt.len+1))-2) ] 863c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 60 }} 864c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 865c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 866c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################# Routing Header ################################ 867c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 868c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6ExtHdrRouting(_IPv6ExtHdr): 869c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Option Header Routing" 870c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 871c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, count_of="addresses", fmt="B", 872c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x:2*x), # in 8 bytes blocks 873c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("type", 0), 874c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("segleft", None), 875c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("reserved", 0, 32), # There is meaning in this field ... 87677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil IP6ListField("addresses", [], 877c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len)] 878c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 43 }} 879c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 880c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, pkt, pay): 881c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.segleft is None: 882c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pkt = pkt[:3]+struct.pack("B", len(self.addresses))+pkt[4:] 883c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _IPv6ExtHdr.post_build(self, pkt, pay) 884c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 885c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########################### Fragmentation Header ############################ 886c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 88777132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass IPv6ExtHdrFragment(_IPv6ExtHdr): 888c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Extension Header - Fragmentation header" 889c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 890c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res1", 0, 8), 89177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("offset", 0, 13), 89277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("res2", 0, 2), 89377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("m", 0, 1), 89477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil IntField("id", None) ] 895c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 44 }} 896c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 897c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 898c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef defragment6(pktlist): 899c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 900c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Performs defragmentation of a list of IPv6 packets. Packets are reordered. 901c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Crap is dropped. What lacks is completed by 'X' characters. 902c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 903c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 904c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = filter(lambda x: IPv6ExtHdrFragment in x, pktlist) # remove non fragments 905c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not l: 906c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [] 907c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 908c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil id = l[0][IPv6ExtHdrFragment].id 909c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 910c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil llen = len(l) 911c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = filter(lambda x: x[IPv6ExtHdrFragment].id == id, l) 912c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(l) != llen: 913c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("defragment6: some fragmented packets have been removed from list") 914c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil llen = len(l) 915c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 916c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # reorder fragments 917c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil i = 0 918c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 919c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while l: 920c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_pos = 0 921c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_offset = l[0][IPv6ExtHdrFragment].offset 922c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in l: 923c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur_offset = p[IPv6ExtHdrFragment].offset 924c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if cur_offset < min_offset: 925c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_pos = 0 926c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_offset = cur_offset 927c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(l[min_pos]) 928c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(l[min_pos]) 929c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 930c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # regenerate the fragmentable part 931c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragmentable = "" 932c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in res: 933c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q=p[IPv6ExtHdrFragment] 934c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil offset = 8*q.offset 935c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if offset != len(fragmentable): 936c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("Expected an offset of %d. Found %d. Padding with XXXX" % (len(fragmentable), offset)) 937c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragmentable += "X"*(offset - len(fragmentable)) 938c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragmentable += str(q.payload) 939c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 940c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Regenerate the unfragmentable part. 941c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q = res[0] 942c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = q[IPv6ExtHdrFragment].nh 943c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q[IPv6ExtHdrFragment].underlayer.nh = nh 944c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q[IPv6ExtHdrFragment].underlayer.payload = None 9457b3e970663abd72697e17b70aba9943ae0dad404Phil q /= conf.raw_layer(load=fragmentable) 946c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 947c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return IPv6(str(q)) 948c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 949c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 950c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef fragment6(pkt, fragSize): 951c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 952c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Performs fragmentation of an IPv6 packet. Provided packet ('pkt') must already 953c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil contain an IPv6ExtHdrFragment() class. 'fragSize' argument is the expected 954c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil maximum size of fragments (MTU). The list of packets is returned. 955c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 956c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If packet does not contain an IPv6ExtHdrFragment class, it is returned in 957c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil result list. 958c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 959c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 960c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pkt = pkt.copy() 961c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = str(pkt) # for instantiation to get upper layer checksum right 962c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 963c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(s) <= fragSize: 964c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [pkt] 965c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 966c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not IPv6ExtHdrFragment in pkt: 967c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO : automatically add a fragment before upper Layer 968c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # at the moment, we do nothing and return initial packet 969c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # as single element of a list 970c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [pkt] 971c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 972c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Fragmentable part : fake IPv6 for Fragmentable part length computation 973c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragPart = pkt[IPv6ExtHdrFragment].payload 974c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = str(IPv6(src="::1", dst="::1")/fragPart) 975c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragPartLen = len(tmp) - 40 # basic IPv6 header length 976c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragPartStr = s[-fragPartLen:] 977c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 978c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Grab Next Header for use in Fragment Header 979c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = IPv6(tmp[:40]).nh 980c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 981c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Keep fragment header 982c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader = pkt[IPv6ExtHdrFragment] 983c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.payload = None # detach payload 984c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 985c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Unfragmentable Part 986c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPartLen = len(s) - fragPartLen - 8 987c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPart = pkt 988c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pkt[IPv6ExtHdrFragment].underlayer.payload = None # detach payload 989c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 990c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Cut the fragmentable part to fit fragSize. Inner fragments have 991c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a length that is an integer multiple of 8 octets. last Frag MTU 992c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # can be anything below MTU 993c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil lastFragSize = fragSize - unfragPartLen - 8 994c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil innerFragSize = lastFragSize - (lastFragSize % 8) 995c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 996c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if lastFragSize <= 0 or innerFragSize == 0: 997c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("Provided fragment size value is too low. " + 998c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil "Should be more than %d" % (unfragPartLen + 8)) 999c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [unfragPart/fragHeader/fragPart] 1000c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1001c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = fragPartStr 1002c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1003c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragOffset = 0 # offset, incremeted during creation 1004c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragId = random.randint(0,0xffffffff) # random id ... 1005c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if fragHeader.id is not None: # ... except id provided by user 1006c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragId = fragHeader.id 1007c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.m = 1 1008c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.id = fragId 1009c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.nh = nh 1010c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1011c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Main loop : cut, fit to FRAGSIZEs, fragOffset, Id ... 1012c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while True: 1013c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (len(remain) > lastFragSize): 1014c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = remain[:innerFragSize] 1015c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = remain[innerFragSize:] 1016c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.offset = fragOffset # update offset 1017c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragOffset += (innerFragSize / 8) # compute new one 1018c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if IPv6 in unfragPart: 1019c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPart[IPv6].plen = None 10207b3e970663abd72697e17b70aba9943ae0dad404Phil tempo = unfragPart/fragHeader/conf.raw_layer(load=tmp) 1021c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(tempo) 1022c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1023c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.offset = fragOffset # update offSet 1024c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.m = 0 1025c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if IPv6 in unfragPart: 1026c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPart[IPv6].plen = None 10277b3e970663abd72697e17b70aba9943ae0dad404Phil tempo = unfragPart/fragHeader/conf.raw_layer(load=remain) 1028c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(tempo) 1029c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 1030c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 1031c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1032c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1033c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################### AH Header ################################### 1034c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1035c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class _AHFieldLenField(FieldLenField): 1036c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# def getfield(self, pkt, s): 1037c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# l = getattr(pkt, self.fld) 1038c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# l = (l*8)-self.shift 1039c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# i = self.m2i(pkt, s[:l]) 1040c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# return s[l:],i 1041c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1042c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class _AHICVStrLenField(StrLenField): 1043c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# def i2len(self, pkt, x): 1044c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1045c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1046c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1047c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class IPv6ExtHdrAH(_IPv6ExtHdr): 1048c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# name = "IPv6 Extension Header - AH" 1049c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 1050c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# _AHFieldLenField("len", None, "icv"), 1051c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# ShortField("res", 0), 1052c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# IntField("spi", 0), 1053c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# IntField("sn", 0), 1054c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# _AHICVStrLenField("icv", None, "len", shift=2) ] 1055c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# overload_fields = {IPv6: { "nh": 51 }} 1056c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1057c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# def post_build(self, pkt, pay): 1058c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if self.len is None: 1059c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# pkt = pkt[0]+struct.pack("!B", 2*len(self.addresses))+pkt[2:] 1060c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if self.segleft is None: 1061c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# pkt = pkt[:3]+struct.pack("!B", len(self.addresses))+pkt[4:] 1062c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# return _IPv6ExtHdr.post_build(self, pkt, pay) 1063c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1064c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1065c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################### ESP Header ################################## 1066c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1067c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class IPv6ExtHdrESP(_IPv6extHdr): 1068c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# name = "IPv6 Extension Header - ESP" 1069c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# fields_desc = [ IntField("spi", 0), 1070c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# IntField("sn", 0), 1071c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# # there is things to extract from IKE work 1072c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# ] 1073c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# overloads_fields = {IPv6: { "nh": 50 }} 1074c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1075c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1076c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1077c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1078c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1079c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### ICMPv6* Classes ### 1080c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1081c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1082c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1083c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6typescls = { 1: "ICMPv6DestUnreach", 1084c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "ICMPv6PacketTooBig", 1085c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "ICMPv6TimeExceeded", 1086c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "ICMPv6ParamProblem", 1087c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128: "ICMPv6EchoRequest", 1088c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129: "ICMPv6EchoReply", 1089c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 130: "ICMPv6MLQuery", 1090c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 131: "ICMPv6MLReport", 1091c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 132: "ICMPv6MLDone", 1092c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 133: "ICMPv6ND_RS", 1093c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 134: "ICMPv6ND_RA", 1094c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 135: "ICMPv6ND_NS", 1095c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 136: "ICMPv6ND_NA", 1096c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 137: "ICMPv6ND_Redirect", 1097c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #138: Do Me - RFC 2894 - Seems painful 1098c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 139: "ICMPv6NIQuery", 1099c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 140: "ICMPv6NIReply", 1100c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 141: "ICMPv6ND_INDSol", 1101c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 142: "ICMPv6ND_INDAdv", 1102c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #143: Do Me - RFC 3810 110377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 144: "ICMPv6HAADRequest", 110477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 145: "ICMPv6HAADReply", 110577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 146: "ICMPv6MPSol", 110677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 147: "ICMPv6MPAdv", 1107c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #148: Do Me - SEND related - RFC 3971 1108c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #149: Do Me - SEND related - RFC 3971 1109c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 151: "ICMPv6MRD_Advertisement", 1110c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 152: "ICMPv6MRD_Solicitation", 1111c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 153: "ICMPv6MRD_Termination", 111277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil } 1113c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1114c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6types = { 1 : "Destination unreachable", 1115c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2 : "Packet too big", 111677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 3 : "Time exceeded", 1117c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4 : "Parameter problem", 1118c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 100 : "Private Experimentation", 1119c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 101 : "Private Experimentation", 1120c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128 : "Echo Request", 1121c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129 : "Echo Reply", 1122c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 130 : "MLD Query", 112377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 131 : "MLD Report", 112477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 132 : "MLD Done", 112577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 133 : "Router Solicitation", 112677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 134 : "Router Advertisement", 112777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 135 : "Neighbor Solicitation", 112877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 136 : "Neighbor Advertisement", 112977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 137 : "Redirect Message", 113077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 138 : "Router Renumbering", 113177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 139 : "ICMP Node Information Query", 113277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 140 : "ICMP Node Information Response", 113377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 141 : "Inverse Neighbor Discovery Solicitation Message", 113477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 142 : "Inverse Neighbor Discovery Advertisement Message", 113577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 143 : "Version 2 Multicast Listener Report", 113677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 144 : "Home Agent Address Discovery Request Message", 113777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 145 : "Home Agent Address Discovery Reply Message", 113877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 146 : "Mobile Prefix Solicitation", 113977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 147 : "Mobile Prefix Advertisement", 114077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 148 : "Certification Path Solicitation", 114177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 149 : "Certification Path Advertisement", 1142c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 151 : "Multicast Router Advertisement", 1143c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 152 : "Multicast Router Solicitation", 1144c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 153 : "Multicast Router Termination", 1145c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 200 : "Private Experimentation", 1146c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 201 : "Private Experimentation" } 1147c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1148c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1149c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6(Packet): 1150c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 dummy class" 1151c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: {"nh": 58}} 1152c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, p, pay): 115377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil p += pay 1154c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.cksum == None: 115577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil chksum = in6_chksum(58, self.underlayer, p) 115677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil p = p[:2]+struct.pack("!H", chksum)+p[4:] 115777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return p 1158c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1159c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1160c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.hashret() 1161c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1162c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1163c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # isinstance(self.underlayer, _IPv6ExtHdr) may introduce a bug ... 116477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if (isinstance(self.underlayer, IPerror6) or 1165c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(self.underlayer, _IPv6ExtHdr) and 1166c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(other, _ICMPv6)): 116777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if not ((self.type == other.type) and 116877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil (self.code == other.code)): 116977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 0 117077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 1 117177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 0 1172c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1173c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1174c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6Error(_ICMPv6): 1175c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 errors dummy class" 1176c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def guess_payload_class(self,p): 117777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return IPerror6 1178c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1179c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6Unknown(_ICMPv6): 1180c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Scapy6 ICMPv6 fallback class" 1181c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",1, icmp6types), 1182c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1183c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1184c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField("msgbody", "")] 1185c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1186c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1187c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil################################## RFC 2460 ################################# 1188c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1189c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6DestUnreach(_ICMPv6Error): 1190c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Destination Unreachable" 1191c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",1, icmp6types), 1192c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("code",0, { 0: "No route to destination", 1193c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "Communication with destination administratively prohibited", 1194c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Beyond scope of source address", 1195c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Address unreachable", 1196c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "Port unreachable" }), 1197c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1198c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("unused",0x00000000)] 1199c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1200c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6PacketTooBig(_ICMPv6Error): 1201c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Packet Too Big" 1202c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",2, icmp6types), 1203c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1204c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1205c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("mtu",1280)] 1206c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1207c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6TimeExceeded(_ICMPv6Error): 1208c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Time Exceeded" 1209c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",3, icmp6types), 1210c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",{ 0: "hop limit exceeded in transit", 1211c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "fragment reassembly time exceeded"}), 1212c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1213c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("unused",0x00000000)] 1214c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1215c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# The default pointer value is set to the next header field of 1216c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# the encapsulated IPv6 packet 1217c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ParamProblem(_ICMPv6Error): 1218c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Parameter Problem" 1219c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",4, icmp6types), 1220c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("code",0, {0: "erroneous header field encountered", 1221c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "unrecognized Next Header type encountered", 1222c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "unrecognized IPv6 option encountered"}), 1223c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1224c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("ptr",6)] 1225c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1226c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6EchoRequest(_ICMPv6): 1227c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Echo Request" 1228c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 128, icmp6types), 1229c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 1230c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1231c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id",0), 1232c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("seq",0), 1233c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField("data", "")] 1234c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 1235c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% (id: %id% seq: %seq%)") 1236c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1237c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("HH",self.id,self.seq)+self.payload.hashret() 1238c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1239c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1240c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6EchoReply(ICMPv6EchoRequest): 1241c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Echo Reply" 1242c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 129 1243c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1244c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # We could match data content between request and reply. 1245c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (isinstance(other, ICMPv6EchoRequest) and 1246c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.id == other.id and self.seq == other.seq and 1247c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.data == other.data) 1248c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1249c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1250c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############ ICMPv6 Multicast Listener Discovery (RFC3810) ################## 1251c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1252c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# tous les messages MLD sont emis avec une adresse source lien-locale 1253c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# -> Y veiller dans le post_build si aucune n'est specifiee 1254c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# La valeur de Hop-Limit doit etre de 1 1255c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# "and an IPv6 Router Alert option in a Hop-by-Hop Options 1256c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# header. (The router alert option is necessary to cause routers to 1257c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# examine MLD messages sent to multicast addresses in which the router 1258c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# itself has no interest" 1259c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6ML(_ICMPv6): 1260c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 130, icmp6types), 1261c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 1262c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1263c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("mrd", 0), 1264c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("reserved", 0), 1265c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("mladdr",None)] 1266c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1267c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# general queries are sent to the link-scope all-nodes multicast 1268c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# address ff02::1, with a multicast address field of 0 and a MRD of 1269c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [Query Response Interval] 1270c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Default value for mladdr is set to 0 for a General Query, and 1271c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# overloaded by the user for a Multicast Address specific query 1272c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO : See what we can do to automatically include a Router Alert 1273c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Option in a Destination Option Header. 1274c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MLQuery(_ICMPv6ML): # RFC 2710 1275c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MLD - Multicast Listener Query" 1276c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 130 1277c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mrd = 10000 1278c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mladdr = "::" # 10s for mrd 1279c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "dst": "ff02::1", "hlim": 1 }} 1280c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1281c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.mladdr != "::": 1282c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("HH",self.mladdr)+self.payload.hashret() 1283c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1284c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.hashret() 1285c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1286c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1287c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO : See what we can do to automatically include a Router Alert 1288c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Option in a Destination Option Header. 1289c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MLReport(_ICMPv6ML): # RFC 2710 1290c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MLD - Multicast Listener Report" 1291c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 131 1292c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: {"hlim": 1}} 1293c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # implementer le hashret et le answers 1294c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1295c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# When a node ceases to listen to a multicast address on an interface, 1296c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# it SHOULD send a single Done message to the link-scope all-routers 1297c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# multicast address (FF02::2), carrying in its multicast address field 1298c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# the address to which it is ceasing to listen 1299c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO : See what we can do to automatically include a Router Alert 1300c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Option in a Destination Option Header. 1301c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MLDone(_ICMPv6ML): # RFC 2710 1302c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MLD - Multicast Listener Done" 1303c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 132 1304c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "dst": "ff02::2", "hlim": 1}} 1305c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1306c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1307c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########## ICMPv6 MRD - Multicast Router Discovery (RFC 4286) ############### 1308c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1309c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: 1310c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - 04/09/06 troglocan : find a way to automatically add a router alert 1311c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# option for all MRD packets. This could be done in a specific 1312c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# way when IPv6 is the under layer with some specific keyword 1313c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# like 'exthdr'. This would allow to keep compatibility with 1314c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# providing IPv6 fields to be overloaded in fields_desc. 1315c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1316c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# At the moment, if user inserts an IPv6 Router alert option 1317c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# none of the IPv6 default values of IPv6 layer will be set. 1318c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1319c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MRD_Advertisement(_ICMPv6): 1320c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Multicast Router Discovery Advertisement" 1321c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ByteEnumField("type", 151, icmp6types), 1322c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("advinter", 20), 1323c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1324c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("queryint", 0), 1325c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("robustness", 0)] 1326c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "hlim": 1, "dst": "ff02::2"}} 1327c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # IPv6 Router Alert requires manual inclusion 1328c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 1329c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:8], s[8:] 1330c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1331c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MRD_Solicitation(_ICMPv6): 1332c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Multicast Router Discovery Solicitation" 1333c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ByteEnumField("type", 152, icmp6types), 1334c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", 0), 1335c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None) ] 1336c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "hlim": 1, "dst": "ff02::2"}} 1337c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # IPv6 Router Alert requires manual inclusion 1338c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 1339c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:4], s[4:] 1340c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1341c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MRD_Termination(_ICMPv6): 1342c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Multicast Router Discovery Termination" 1343c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ByteEnumField("type", 153, icmp6types), 1344c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", 0), 1345c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None) ] 1346c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "hlim": 1, "dst": "ff02::6A"}} 1347c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # IPv6 Router Alert requires manual inclusion 1348c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 1349c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:4], s[4:] 1350c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1351c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1352c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil################### ICMPv6 Neighbor Discovery (RFC 2461) #################### 1353c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1354c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6ndopts = { 1: "Source Link-Layer Address", 1355c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Target Link-Layer Address", 1356c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Prefix Information", 1357c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "Redirected Header", 1358c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "MTU", 1359c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "NBMA Shortcut Limit Option", # RFC2491 1360c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "Advertisement Interval Option", 1361c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "Home Agent Information Option", 1362c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: "Source Address List", 1363c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: "Target Address List", 1364c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 11: "CGA Option", # RFC 3971 1365c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 12: "RSA Signature Option", # RFC 3971 1366c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 13: "Timestamp Option", # RFC 3971 1367c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14: "Nonce option", # RFC 3971 1368c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 15: "Trust Anchor Option", # RFC 3971 1369c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: "Certificate Option", # RFC 3971 1370c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17: "IP Address Option", # RFC 4068 1371c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 18: "New Router Prefix Information Option", # RFC 4068 1372c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 19: "Link-layer Address Option", # RFC 4068 1373c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 20: "Neighbor Advertisement Acknowledgement Option", 1374c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 21: "CARD Request Option", # RFC 4065/4066/4067 1375c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 22: "CARD Reply Option", # RFC 4065/4066/4067 1376c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 23: "MAP Option", # RFC 4140 1377c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 24: "Route Information Option", # RFC 4191 1378c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 25: "Recusive DNS Server Option", 1379c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 26: "IPv6 Router Advertisement Flags Option" 1380c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil } 1381c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1382c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6ndoptscls = { 1: "ICMPv6NDOptSrcLLAddr", 1383c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "ICMPv6NDOptDstLLAddr", 1384c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "ICMPv6NDOptPrefixInfo", 1385c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "ICMPv6NDOptRedirectedHdr", 1386c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "ICMPv6NDOptMTU", 1387c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "ICMPv6NDOptShortcutLimit", 1388c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "ICMPv6NDOptAdvInterval", 1389c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "ICMPv6NDOptHAInfo", 1390c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: "ICMPv6NDOptSrcAddrList", 1391c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: "ICMPv6NDOptTgtAddrList", 1392c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #11: Do Me, 1393c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #12: Do Me, 1394c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #13: Do Me, 1395c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #14: Do Me, 1396c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #15: Do Me, 1397c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #16: Do Me, 1398c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17: "ICMPv6NDOptIPAddr", 1399c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 18: "ICMPv6NDOptNewRtrPrefix", 1400c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 19: "ICMPv6NDOptLLA", 1401c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #18: Do Me, 1402c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #19: Do Me, 1403c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #20: Do Me, 1404c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #21: Do Me, 1405c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #22: Do Me, 1406c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 23: "ICMPv6NDOptMAP", 1407c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 24: "ICMPv6NDOptRouteInfo", 1408c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 25: "ICMPv6NDOptRDNSS", 1409c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 26: "ICMPv6NDOptEFA" 1410c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil } 1411c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1412c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6NDGuessPayload: 1413c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Dummy ND class that implements guess_payload_class()" 1414c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def guess_payload_class(self,p): 1415c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(p) > 1: 1416c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return get_cls(icmp6ndoptscls.get(ord(p[0]),"Raw"), "Raw") # s/Raw/ICMPv6NDOptUnknown/g ? 1417c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1418c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1419c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Beginning of ICMPv6 Neighbor Discovery Options. 1420c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1421c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptUnknown(_ICMPv6NDGuessPayload, Packet): 1422c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Scapy Unimplemented" 1423c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",None), 1424c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len",None,length_of="data",fmt="B", 1425c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x+2), 1426c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("data","", 1427c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.len-2) ] 1428c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1429c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# NOTE: len includes type and len field. Expressed in unit of 8 bytes 1430c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: Revoir le coup du ETHER_ANY 1431c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptSrcLLAddr(_ICMPv6NDGuessPayload, Packet): 1432c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Source Link-Layer Address" 1433c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 1), 1434c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1435c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil MACField("lladdr", ETHER_ANY) ] 143677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1437c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %lladdr%") 1438c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1439c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptDstLLAddr(ICMPv6NDOptSrcLLAddr): 1440c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Destination Link-Layer Address" 1441c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 2 1442c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1443c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptPrefixInfo(_ICMPv6NDGuessPayload, Packet): 1444c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Prefix Information" 1445c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",3), 1446c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",4), 1447c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("prefixlen",None), 1448c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("L",1,1), 1449c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("A",1,1), 1450c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("R",0,1), 1451c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res1",0,5), 1452c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("validlifetime",0xffffffffL), 1453c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("preferredlifetime",0xffffffffL), 1454c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("res2",0x00000000), 1455c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("prefix","::") ] 145677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1457c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %prefix%") 1458c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1459c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: We should also limit the size of included packet to something 1460c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# like (initiallen - 40 - 2) 1461c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass TruncPktLenField(PacketLenField): 1462c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1463c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, cls, cur_shift, length_from=None, shift=0): 1464c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil PacketLenField.__init__(self, name, default, cls, length_from=length_from) 1465c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.cur_shift = cur_shift 1466c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1467c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 1468c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 1469c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil i = self.m2i(pkt, s[:l]) 1470c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[l:],i 14714e957e091da2c111732db403e6db503f4b383157Jochen Bartl 1472c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m2i(self, pkt, m): 14734e957e091da2c111732db403e6db503f4b383157Jochen Bartl s = None 1474c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: # It can happen we have sth shorter than 40 bytes 1475c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = self.cls(m) 1476c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 14777b3e970663abd72697e17b70aba9943ae0dad404Phil return conf.raw_layer(m) 1478c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 1479c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1480c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 1481c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = str(x) 1482c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = len(s) 1483c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r = (l + self.cur_shift) % 8 14844e957e091da2c111732db403e6db503f4b383157Jochen Bartl l = l - r 1485c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:l] 1486c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1487c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 1488c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(self.i2m(pkt, i)) 1489c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14904e957e091da2c111732db403e6db503f4b383157Jochen Bartl 1491c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Faire un post_build pour le recalcul de la taille (en multiple de 8 octets) 1492c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptRedirectedHdr(_ICMPv6NDGuessPayload, Packet): 1493c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Redirected Header" 1494c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",4), 1495c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="pkt", fmt="B", 14964e957e091da2c111732db403e6db503f4b383157Jochen Bartl adjust = lambda pkt,x:(x+8)/8), 1497b5d49cd73a38b87d2a62a74452d3cb0932e6aa7bJochen Bartl StrFixedLenField("res", "\x00"*6, 6), 14984e957e091da2c111732db403e6db503f4b383157Jochen Bartl TruncPktLenField("pkt", "", IPv6, 8, 14994e957e091da2c111732db403e6db503f4b383157Jochen Bartl length_from = lambda pkt: 8*pkt.len-8) ] 1500c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1501c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# See which value should be used for default MTU instead of 1280 1502c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptMTU(_ICMPv6NDGuessPayload, Packet): 1503c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - MTU" 1504c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",5), 1505c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",1), 1506c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("res",0), 1507c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("mtu",1280)] 1508c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1509c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptShortcutLimit(_ICMPv6NDGuessPayload, Packet): # RFC 2491 1510c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - NBMA Shortcut Limit" 1511c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 6), 1512c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1513c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("shortcutlim", 40), # XXX 1514c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res1", 0), 1515c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res2", 0) ] 1516c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1517c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptAdvInterval(_ICMPv6NDGuessPayload, Packet): 1518c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Interval Advertisement" 1519c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",7), 1520c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",1), 1521c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res", 0), 1522c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("advint", 0) ] 152377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1524c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %advint% milliseconds") 1525c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 152677132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptHAInfo(_ICMPv6NDGuessPayload, Packet): 1527c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Home Agent Information" 1528c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",8), 1529c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",1), 1530c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res", 0), 1531c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("pref", 0), 1532c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("lifetime", 1)] 153377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1534c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %pref% %lifetime% seconds") 1535c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1536c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# type 9 : See ICMPv6NDOptSrcAddrList class below in IND (RFC 3122) support 1537c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1538c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# type 10 : See ICMPv6NDOptTgtAddrList class below in IND (RFC 3122) support 1539c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 154077132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptIPAddr(_ICMPv6NDGuessPayload, Packet): # RFC 4068 1541c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - IP Address Option (FH for MIPv6)" 1542c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",17), 1543c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 3), 1544c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("optcode", 1, {1: "Old Care-Of Address", 1545c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "New Care-Of Address", 1546c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "NAR's IP address" }), 1547c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", 64), 1548c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res", 0), 1549c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("addr", "::") ] 1550c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1551c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptNewRtrPrefix(_ICMPv6NDGuessPayload, Packet): # RFC 4068 1552c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - New Router Prefix Information Option (FH for MIPv6)" 1553c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",18), 1554c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 3), 1555c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optcode", 0), 1556c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", 64), 1557c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res", 0), 1558c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("prefix", "::") ] 1559c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1560c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_rfc4068_lla_optcode = {0: "Wildcard requesting resolution for all nearby AP", 1561c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "LLA for the new AP", 1562c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "LLA of the MN", 1563c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "LLA of the NAR", 1564c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "LLA of the src of TrSolPr or PrRtAdv msg", 1565c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "AP identified by LLA belongs to current iface of router", 1566c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "No preifx info available for AP identified by the LLA", 1567c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "No fast handovers support for AP identified by the LLA" } 1568c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 156977132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptLLA(_ICMPv6NDGuessPayload, Packet): # RFC 4068 1570c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Link-Layer Address (LLA) Option (FH for MIPv6)" 1571c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 19), 1572c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1573c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("optcode", 0, _rfc4068_lla_optcode), 1574c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil MACField("lla", ETHER_ANY) ] # We only support ethernet 1575c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 157677132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptMAP(_ICMPv6NDGuessPayload, Packet): # RFC 4140 1577c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - MAP Option" 1578c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 23), 1579c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 3), 1580c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("dist", 1, 4), 1581c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("pref", 15, 4), # highest availability 1582c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("R", 1, 1), 1583c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res", 0, 7), 1584c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("validlifetime", 0xffffffff), 1585c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("addr", "::") ] 1586c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1587c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1588c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IP6PrefixField(IP6Field): 1589c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default): 1590c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field.__init__(self, name, default) 1591c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.length_from = lambda pkt: 8*(pkt.len - 1) 1592c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1593c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 1594c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + self.i2m(pkt, val) 1595c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1596c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 1597c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 1598c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = s[:l] 1599c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l < 16: 1600c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p += '\x00'*(16-l) 1601c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[l:], self.m2i(pkt,p) 1602c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1603c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, x): 1604c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(self.i2m(pkt, x)) 1605c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1606c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 1607c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = pkt.len 1608c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1609c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1610c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "::" 1611c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is None: 1612c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = 1 1613c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = inet_pton(socket.AF_INET6, x) 1614c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1615c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is None: 1616c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1617c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l in [0, 1]: 1618c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "" 1619c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l in [2, 3]: 1620c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x[:8*(l-1)] 1621c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1622c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x + '\x00'*8*(l-3) 1623c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1624c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptRouteInfo(_ICMPv6NDGuessPayload, Packet): # RFC 4191 1625c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Route Information Option" 1626c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",24), 1627c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="prefix", fmt="B", 1628c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x/8 + 1), 1629c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", None), 1630c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res1",0,3), 1631c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("prf",0,2), 1632c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res2",0,3), 1633c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("rtlifetime", 0xffffffff), 1634c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6PrefixField("prefix", None) ] 1635c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1636c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptRDNSS(_ICMPv6NDGuessPayload, Packet): # RFC 5006 1637c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Recursive DNS Server Option" 1638c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 25), 1639c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, count_of="dns", fmt="B", 1640c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: 2*x+1), 1641c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res", None), 1642c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("lifetime", 0xffffffff), 1643c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6ListField("dns", [], 1644c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-1)) ] 1645c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1646c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptEFA(_ICMPv6NDGuessPayload, Packet): # RFC 5175 (prev. 5075) 1647c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Expanded Flags Option" 1648c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 26), 1649c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1650c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res", 0, 48) ] 1651c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1652c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# End of ICMPv6 Neighbor Discovery Options. 1653c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1654c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_RS(_ICMPv6NDGuessPayload, _ICMPv6): 1655c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Router Solicitation" 1656c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 133, icmp6types), 1657c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1658c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1659c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res",0) ] 1660c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::2", "hlim": 255 }} 1661c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1662c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_RA(_ICMPv6NDGuessPayload, _ICMPv6): 1663c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Router Advertisement" 1664c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 134, icmp6types), 1665c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1666c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1667c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("chlim",0), 1668c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("M",0,1), 1669c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("O",0,1), 1670c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("H",0,1), 1671c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("prf",1,2, { 0: "Medium (default)", 1672c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "High", 1673c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Reserved", 1674c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Low" } ), # RFC 4191 1675c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("P",0,1), 1676c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res",0,2), 1677c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("routerlifetime",1800), 1678c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("reachabletime",0), 1679c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("retranstimer",0) ] 1680c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1681c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1682c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1683c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return isinstance(other, ICMPv6ND_RS) 1684c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1685c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_NS(_ICMPv6NDGuessPayload, _ICMPv6, Packet): 1686c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Neighbor Solicitation" 1687c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",135, icmp6types), 1688c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1689c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1690c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("R",0,1), 1691c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("S",0,1), 1692c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("O",0,1), 1693c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res",0,29), 1694c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("tgt","::") ] 1695c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1696c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1697c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 1698c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% (tgt: %tgt%)") 1699c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1700c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1701c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.tgt+self.payload.hashret() 1702c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1703c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_NA(ICMPv6ND_NS): 1704c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Neighbor Advertisement" 1705c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 136 1706c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil R = 1 1707c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil O = 1 1708c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1709c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 171077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return isinstance(other, ICMPv6ND_NS) and self.tgt == other.tgt 1711c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1712c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# associated possible options : target link-layer option, Redirected header 1713c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_Redirect(_ICMPv6NDGuessPayload, _ICMPv6, Packet): 1714c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Redirect" 1715c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",137, icmp6types), 1716c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1717c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1718c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("res",0), 1719c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("tgt","::"), 1720c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("dst","::") ] 1721c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1722c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1723c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1724c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1725c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil################ ICMPv6 Inverse Neighbor Discovery (RFC 3122) ############### 1726c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1727c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptSrcAddrList(_ICMPv6NDGuessPayload, Packet): 1728c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Option - Source Address List" 1729c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",9), 1730c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, count_of="addrlist", fmt="B", 1731c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: 2*x+1), 1732c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("res", "\x00"*6, 6), 1733c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6ListField("addrlist", [], 1734c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-1)) ] 1735c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1736c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptTgtAddrList(ICMPv6NDOptSrcAddrList): 1737c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Option - Target Address List" 1738c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 10 1739c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1740c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1741c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# RFC3122 1742c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Options requises : source lladdr et target lladdr 1743c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Autres options valides : source address list, MTU 1744c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - Comme precise dans le document, il serait bien de prendre l'adresse L2 1745c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# demandee dans l'option requise target lladdr et l'utiliser au niveau 1746c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# de l'adresse destination ethernet si aucune adresse n'est precisee 1747c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - ca semble pas forcement pratique si l'utilisateur doit preciser toutes 1748c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# les options. 1749c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Ether() must use the target lladdr as destination 1750c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_INDSol(_ICMPv6NDGuessPayload, _ICMPv6): 1751c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Solicitation" 1752c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",141, icmp6types), 1753c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1754c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum",None), 1755c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("reserved",0) ] 1756c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1757c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1758c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Options requises : target lladdr, target address list 1759c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Autres options valides : MTU 1760c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_INDAdv(_ICMPv6NDGuessPayload, _ICMPv6): 1761c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Advertisement" 1762c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",142, icmp6types), 1763c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1764c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum",None), 1765c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("reserved",0) ] 1766c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1767c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1768c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1769c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################### 1770c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# ICMPv6 Node Information Queries (RFC 4620) 1771c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################### 1772c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1773c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Add automatic destination address computation using computeNIGroupAddr 1774c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# in IPv6 class (Scapy6 modification when integrated) if : 1775c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - it is not provided 1776c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - upper layer is ICMPv6NIQueryName() with a valid value 1777c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Try to be liberal in what we accept as internal values for _explicit_ 1778c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# DNS elements provided by users. Any string should be considered 1779c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# valid and kept like it has been provided. At the moment, i2repr() will 1780c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# crash on many inputs 1781c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Do the documentation 1782c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Add regression tests 1783c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Perform test against real machines (NOOP reply is proof of implementation). 1784c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Check if there are differences between different stacks. Among *BSD, 1785c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# with others. 1786c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Deal with flags in a consistent way. 1787c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Implement compression in names2dnsrepr() and decompresiion in 1788c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# dnsrepr2names(). Should be deactivable. 1789c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1790c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6_niqtypes = { 0: "NOOP", 1791c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Node Name", 1792c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "IPv6 Address", 1793c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "IPv4 Address" } 1794c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1795c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1796c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6NIHashret: 1797c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1798c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.nonce 1799c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1800c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6NIAnswers: 1801c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1802c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.nonce == other.nonce 1803c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1804c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Buggy; always returns the same value during a session 1805c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NonceField(StrFixedLenField): 1806c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default=None): 1807c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField.__init__(self, name, default, 8) 1808c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if default is None: 1809c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.default = self.randval() 1810c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1811c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Compute the NI group Address. Can take a FQDN as input parameter 1812c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef computeNIGroupAddr(name): 1813c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil import md5 1814c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = name.lower().split(".")[0] 1815c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil record = chr(len(name))+name 1816c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil h = md5.new(record) 1817c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil h = h.digest() 1818c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = "ff02::2:%2x%2x:%2x%2x" % struct.unpack("BBBB", h[:4]) 1819c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return addr 1820c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1821c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1822c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Here is the deal. First, that protocol is a piece of shit. Then, we 1823c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# provide 4 classes for the different kinds of Requests (one for every 1824c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# valid qtype: NOOP, Node Name, IPv6@, IPv4@). They all share the same 1825c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# data field class that is made to be smart by guessing the specifc 1826c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# type of value provided : 1827c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1828c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - IPv6 if acceptable for inet_pton(AF_INET6, ): code is set to 0, 1829c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if not overriden by user 1830c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - IPv4 if acceptable for inet_pton(AF_INET, ): code is set to 2, 1831c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if not overriden 1832c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - Name in the other cases: code is set to 0, if not overriden by user 1833c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1834c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Internal storage, is not only the value, but the a pair providing 1835c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# the type and the value (1 is IPv6@, 1 is Name or string, 2 is IPv4@) 1836c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1837c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Note : I merged getfield() and m2i(). m2i() should not be called 1838c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# directly anyway. Same remark for addfield() and i2m() 1839c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1840c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# -- arno 1841c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1842c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# "The type of information present in the Data field of a query is 1843c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# declared by the ICMP Code, whereas the type of information in a 1844c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Reply is determined by the Qtype" 1845c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1846c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef names2dnsrepr(x): 1847c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1848c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Take as input a list of DNS names or a single DNS name 1849c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil and encode it in DNS format (with possible compression) 1850c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If a string that is already a DNS name in DNS format 1851c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil is passed, it is returned unmodified. Result is a string. 1852c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil !!! At the moment, compression is not implemented !!! 1853c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1854c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1855c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 1856c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x and x[-1] == '\x00': # stupid heuristic 1857c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1858c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [x] 1859c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1860c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1861c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for n in x: 1862c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil termin = "\x00" 1863c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if n.count('.') == 0: # single-component gets one more 1864c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil termin += '\x00' 1865c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil n = "".join(map(lambda y: chr(len(y))+y, n.split("."))) + termin 1866c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(n) 1867c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "".join(res) 1868c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1869c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1870c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef dnsrepr2names(x): 1871c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1872c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Take as input a DNS encoded string (possibly compressed) 1873c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil and returns a list of DNS names contained in it. 1874c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If provided string is already in printable format 1875c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (does not end with a null character, a one element list 1876c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil is returned). Result is a list. 1877c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1878c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1879c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur = "" 1880c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while x: 1881c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = ord(x[0]) 1882c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[1:] 1883c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l == 0: 1884c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if cur and cur[-1] == '.': 1885c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur = cur[:-1] 1886c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(cur) 1887c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur = "" 1888c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x and ord(x[0]) == 0: # single component 1889c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[1:] 1890c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil continue 1891c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l & 0xc0: # XXX TODO : work on that -- arno 1892c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil raise Exception("DNS message can't be compressed at this point!") 1893c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1894c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur += x[:l]+"." 1895c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[l:] 1896c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 1897c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1898c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1899c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NIQueryDataField(StrField): 1900c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default): 1901c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField.__init__(self, name, default) 1902c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1903c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2h(self, pkt, x): 1904c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1905c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1906c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,val = x 1907c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 1: 1908c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = dnsrepr2names(val)[0] 1909c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return val 1910c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1911c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def h2i(self, pkt, x): 1912c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is tuple and type(x[0]) is int: 1913c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1914c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1915c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = None 1916c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: # Try IPv6 1917c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil inet_pton(socket.AF_INET6, x) 1918c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (0, x) 1919c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 1920c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: # Try IPv4 1921c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil inet_pton(socket.AF_INET, x) 1922c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (2, x) 1923c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: # Try DNS 1924c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1925c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "" 1926c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = names2dnsrepr(x) 1927c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (1, x) 1928c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return val 1929c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1930c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 1931c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,val = x 1932c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 1: # DNS Name 1933c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # we don't use dnsrepr2names() to deal with 1934c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # possible weird data extracted info 1935c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1936c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil weird = None 1937c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while val: 1938c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = ord(val[0]) 1939c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = val[1:] 1940c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l == 0: 1941c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (len(res) > 1 and val): # fqdn with data behind 1942c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil weird = val 1943c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif len(val) > 1: # single label with data behind 1944c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil weird = val[1:] 1945c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 1946c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(val[:l]+".") 1947c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = val[l:] 1948c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = "".join(res) 1949c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if tmp and tmp[-1] == '.': 1950c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = tmp[:-1] 1951c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return tmp 1952c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return repr(val) 1953c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1954c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 1955c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = getattr(pkt, "qtype") 1956c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if qtype == 0: # NOOP 1957c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 1958c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1959c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = getattr(pkt, "code") 1960c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if code == 0: # IPv6 Addr 1961c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[16:], (0, inet_ntop(socket.AF_INET6, s[:16])) 1962c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif code == 2: # IPv4 Addr 1963c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[4:], (2, inet_ntop(socket.AF_INET, s[:4])) 1964c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: # Name or Unknown 1965c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "", (1, s) 1966c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1967c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 1968c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if ((type(val) is tuple and val[1] is None) or 1969c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val is None): 1970c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (1, "") 1971c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = val[0] 1972c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 1: 1973c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + val[1] 1974c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 0: 1975c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + inet_pton(socket.AF_INET6, val[1]) 1976c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1977c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + inet_pton(socket.AF_INET, val[1]) 1978c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1979c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NIQueryCodeField(ByteEnumField): 1980c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 1981c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1982c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = pkt.getfieldval("data") 1983c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d is None: 1984c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 1985c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d[0] == 0: # IPv6 address 1986c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 1987c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d[0] == 1: # Name 1988c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 1989c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d[0] == 2: # IPv4 address 1990c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 2 1991c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1992c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 1993c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1994c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1995c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1996c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_niquery_code = {0: "IPv6 Query", 1: "Name Query", 2: "IPv4 Query"} 1997c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1998c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil#_niquery_flags = { 2: "All unicast addresses", 4: "IPv4 addresses", 199977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil# 8: "Link-local addresses", 16: "Site-local addresses", 2000c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 32: "Global addresses" } 2001c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2002c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# "This NI type has no defined flags and never has a Data Field". Used 2003c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# to know if the destination is up and implements NI protocol. 2004c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryNOOP(_ICMPv6NIHashret, _ICMPv6): 2005c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - NOOP Query" 2006c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 139, icmp6types), 2007c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NIQueryCodeField("code", None, _niquery_code), 2008c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2009c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortEnumField("qtype", 0, icmp6_niqtypes), 201077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("unused", 0, 10), 2011c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FlagsField("flags", 0, 6, "TACLSG"), 201277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil NonceField("nonce", None), 2013c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NIQueryDataField("data", None) ] 2014c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2015c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryName(ICMPv6NIQueryNOOP): 2016c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - IPv6 Name Query" 2017c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 2 2018c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2019c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# We ask for the IPv6 address of the peer 2020c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryIPv6(ICMPv6NIQueryNOOP): 2021c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - IPv6 Address Query" 2022c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 3 2023c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil flags = 0x3E 2024c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2025c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryIPv4(ICMPv6NIQueryNOOP): 2026c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - IPv4 Address Query" 2027c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 4 2028c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2029c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_nireply_code = { 0: "Successful Reply", 2030c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "Response Refusal", 2031c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Unknown query type" } 2032c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2033c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_nireply_flags = { 1: "Reply set incomplete", 2034c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "All unicast addresses", 2035c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "IPv4 addresses", 2036c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "Link-local addresses", 2037c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: "Site-local addresses", 2038c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 32: "Global addresses" } 2039c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2040c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Internal repr is one of those : 2041c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (0, "some string") : unknow qtype value are mapped to that one 2042c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (3, [ (ttl, ip6), ... ]) 2043c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (4, [ (ttl, ip4), ... ]) 2044c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (2, [ttl, dns_names]) : dns_names is one string that contains 2045c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# all the DNS names. Internally it is kept ready to be sent 2046c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (undissected). i2repr() decode it for user. This is to 2047c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# make build after dissection bijective. 2048c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 2049c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# I also merged getfield() and m2i(), and addfield() and i2m(). 2050c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NIReplyDataField(StrField): 2051c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2052c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2h(self, pkt, x): 2053c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 2054c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 2055c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,val = x 2056c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 2: 2057c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl, dnsnames = val 2058c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = [ttl] + dnsrepr2names(dnsnames) 2059c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return val 2060c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2061c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def h2i(self, pkt, x): 2062c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 0 # We will decode it as string if not 2063c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # overridden through 'qtype' in pkt 2064c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2065c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # No user hint, let's use 'qtype' value for that purpose 2066c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is not tuple: 2067c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if pkt is not None: 2068c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = getattr(pkt, "qtype") 2069c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2070c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = x[0] 2071c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[1] 2072c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2073c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # From that point on, x is the value (second element of the tuple) 2074c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2075c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if qtype == 2: # DNS name 2076c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: # listify the string 2077c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [x] 2078c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is list and x and type(x[0]) is not int: # ttl was omitted : use 0 2079c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [0] + x 2080c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = x[0] 2081c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil names = x[1:] 2082c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (2, [ttl, names2dnsrepr(names)]) 2083c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2084c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype in [3, 4]: # IPv4 or IPv6 addr 2085c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 2086c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [x] # User directly provided an IP, instead of list 2087c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2088c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # List elements are not tuples, user probably 2089c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # omitted ttl value : we will use 0 instead 2090c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addttl(x): 2091c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 2092c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (0, x) 2093c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 2094c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2095c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (qtype, map(addttl, x)) 2096c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2097c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (qtype, x) 2098c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2099c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2100c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 2101c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,tmp = val 2102c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if tmp is None: 2103c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = "" 2104c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 2: 2105c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl,dnsstr = tmp 2106c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s+ struct.pack("!I", ttl) + dnsstr 2107c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 3: 2108c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + "".join(map(lambda (x,y): struct.pack("!I", x)+inet_pton(socket.AF_INET6, y), tmp)) 2109c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 4: 2110c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + "".join(map(lambda (x,y): struct.pack("!I", x)+inet_pton(socket.AF_INET, y), tmp)) 2111c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2112c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + tmp 2113c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2114c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 2115c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = getattr(pkt, "code") 2116c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if code != 0: 2117c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 2118c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2119c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = getattr(pkt, "qtype") 2120c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if qtype == 0: # NOOP 2121c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 2122c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2123c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype == 2: 2124c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(s) < 4: 2125c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 2126c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = struct.unpack("!I", s[:4])[0] 2127c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "", (2, [ttl, s[4:]]) 2128c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2129c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype == 3: # IPv6 addresses with TTLs 2130c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX TODO : get the real length 2131c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 2132c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while len(s) >= 20: # 4 + 16 2133c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = struct.unpack("!I", s[:4])[0] 2134c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ip = inet_ntop(socket.AF_INET6, s[4:20]) 2135c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append((ttl, ip)) 2136c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = s[20:] 2137c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (3, res) 2138c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2139c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype == 4: # IPv4 addresses with TTLs 2140c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX TODO : get the real length 2141c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 2142c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while len(s) >= 8: # 4 + 4 2143c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = struct.unpack("!I", s[:4])[0] 2144c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ip = inet_ntop(socket.AF_INET, s[4:8]) 2145c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append((ttl, ip)) 2146c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = s[8:] 2147c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (4, res) 2148c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2149c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX TODO : implement me and deal with real length 2150c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "", (0, s) 2151c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2152c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 2153c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 2154c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "[]" 2155c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2156c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is tuple and len(x) == 2: 2157c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t, val = x 2158c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 2: # DNS names 2159c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl,l = val 2160c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = dnsrepr2names(l) 2161c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "ttl:%d %s" % (ttl, ", ".join(l)) 2162c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 3 or t == 4: 2163c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "[ %s ]" % (", ".join(map(lambda (x,y): "(%d, %s)" % (x, y), val))) 2164c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return repr(val) 2165c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return repr(x) # XXX should not happen 2166c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2167c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# By default, sent responses have code set to 0 (successful) 2168c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyNOOP(_ICMPv6NIAnswers, _ICMPv6NIHashret, _ICMPv6): 2169c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - NOOP Reply" 2170c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 140, icmp6types), 2171c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("code", 0, _nireply_code), 2172c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2173c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortEnumField("qtype", 0, icmp6_niqtypes), 217477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("unused", 0, 10), 2175c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FlagsField("flags", 0, 6, "TACLSG"), 217677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil NonceField("nonce", None), 2177c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NIReplyDataField("data", None)] 2178c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2179c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyName(ICMPv6NIReplyNOOP): 2180c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - Node Names" 2181c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 2 2182c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2183c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyIPv6(ICMPv6NIReplyNOOP): 2184c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - IPv6 addresses" 2185c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 3 2186c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2187c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyIPv4(ICMPv6NIReplyNOOP): 2188c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - IPv4 addresses" 2189c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 4 2190c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2191c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyRefuse(ICMPv6NIReplyNOOP): 2192c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - Responder refuses to supply answer" 2193c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = 1 2194c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2195c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyUnknown(ICMPv6NIReplyNOOP): 2196c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - Qtype unknown to the responder" 2197c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = 2 2198c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2199c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2200c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef _niquery_guesser(p): 22017b3e970663abd72697e17b70aba9943ae0dad404Phil cls = conf.raw_layer 2202c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = ord(p[0]) 2203c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type == 139: # Node Info Query specific stuff 2204c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(p) > 6: 2205c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype, = struct.unpack("!H", p[4:6]) 2206c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = { 0: ICMPv6NIQueryNOOP, 2207c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: ICMPv6NIQueryName, 2208c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: ICMPv6NIQueryIPv6, 22097b3e970663abd72697e17b70aba9943ae0dad404Phil 4: ICMPv6NIQueryIPv4 }.get(qtype, conf.raw_layer) 2210c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif type == 140: # Node Info Reply specific stuff 2211c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = ord(p[1]) 2212c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if code == 0: 2213c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(p) > 6: 2214c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype, = struct.unpack("!H", p[4:6]) 2215c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = { 2: ICMPv6NIReplyName, 2216c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: ICMPv6NIReplyIPv6, 2217c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: ICMPv6NIReplyIPv4 }.get(qtype, ICMPv6NIReplyNOOP) 2218c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif code == 1: 2219c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = ICMPv6NIReplyRefuse 2220c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif code == 2: 2221c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = ICMPv6NIReplyUnknown 2222c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return cls 2223c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2224c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2225c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2226c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2227c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Mobile IPv6 (RFC 3775) and Nemo (RFC 3963) ### 2228c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2229c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2230c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2231c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Mobile IPv6 ICMPv6 related classes 2232c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2233c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6HAADRequest(_ICMPv6): 2234c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Home Agent Address Discovery Request' 2235c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 144, icmp6types), 2236c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2237c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2238c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2239c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("R", 1, 1, {1: 'MR'}), 2240c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res", 0, 15) ] 2241c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2242c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id)+self.payload.hashret() 2243c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2244c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6HAADReply(_ICMPv6): 2245c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Home Agent Address Discovery Reply' 2246c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 145, icmp6types), 2247c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2248c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2249c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2250c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("R", 1, 1, {1: 'MR'}), 2251c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res", 0, 15), 2252c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6ListField('addresses', None) ] 2253c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2254c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id)+self.payload.hashret() 2255c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2256c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2257c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not isinstance(other, ICMPv6HAADRequest): 2258c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2259c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.id == other.id 2260c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2261c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MPSol(_ICMPv6): 2262c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Mobile Prefix Solicitation' 2263c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 146, icmp6types), 2264c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2265c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2266c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2267c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("res", 0) ] 2268c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def _hashret(self): 2269c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id) 2270c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2271c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MPAdv(_ICMPv6NDGuessPayload, _ICMPv6): 2272c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Mobile Prefix Advertisement' 2273c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 147, icmp6types), 2274c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2275c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2276c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2277c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("flags", 2, 2, {2: 'M', 1:'O'}), 2278c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res", 0, 14) ] 2279c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2280c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id) 2281c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2282c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2283c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return isinstance(other, ICMPv6MPSol) 2284c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2285c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Mobile IPv6 Options classes 2286c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2287c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2288c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_mobopttypes = { 2: "Binding Refresh Advice", 2289c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Alternate Care-of Address", 2290c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "Nonce Indices", 2291c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "Binding Authorization Data", 2292c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "Mobile Network Prefix (RFC3963)", 2293c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "Link-Layer Address (RFC4068)", 2294c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "Mobile Node Identifier (RFC4283)", 2295c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: "Mobility Message Authentication (RFC4285)", 2296c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: "Replay Protection (RFC4285)", 2297c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 11: "CGA Parameters Request (RFC4866)", 2298c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 12: "CGA Parameters (RFC4866)", 2299c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 13: "Signature (RFC4866)", 2300c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14: "Home Keygen Token (RFC4866)", 2301c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 15: "Care-of Test Init (RFC4866)", 2302c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: "Care-of Test (RFC4866)" } 2303c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2304c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2305c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _MIP6OptAlign: 2306c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ Mobile IPv6 options have alignment requirements of the form x*n+y. 2307c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil This class is inherited by all MIPv6 options to help in computing the 2308c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil required Padding for that option, i.e. the need for a Pad1 or PadN 2309c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil option before it. They only need to provide x and y as class 2310c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil parameters. (x=0 and y=0 are used when no alignment is required)""" 2311c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): 2312c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = self.x ; y = self.y 2313c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x == 0 and y ==0: 2314c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2315c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 2316c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 2317c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2318c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2319c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptBRAdvice(_MIP6OptAlign, Packet): 2320c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Mobile IPv6 Option - Binding Refresh Advice' 2321c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 2, _mobopttypes), 2322c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 2), 2323c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField('rinter', 0) ] 2324c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 2 ; y = 0# alignment requirement: 2n 2325c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2326c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptAltCoA(_MIP6OptAlign, Packet): 2327c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'MIPv6 Option - Alternate Care-of Address' 2328c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 3, _mobopttypes), 2329c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 16), 2330c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("acoa", "::") ] 2331c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 6 # alignment requirement: 8n+6 2332c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 233377132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass MIP6OptNonceIndices(_MIP6OptAlign, Packet): 2334c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'MIPv6 Option - Nonce Indices' 2335c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 4, _mobopttypes), 2336c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 16), 2337c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField('hni', 0), 2338c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField('coni', 0) ] 2339c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 2 ; y = 0 # alignment requirement: 2n 2340c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 234177132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass MIP6OptBindingAuthData(_MIP6OptAlign, Packet): 2342c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'MIPv6 Option - Binding Authorization Data' 2343c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 5, _mobopttypes), 2344c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 16), 2345c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField('authenticator', 0, 96) ] 2346c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 2 # alignment requirement: 8n+2 2347c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2348c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptMobNetPrefix(_MIP6OptAlign, Packet): # NEMO - RFC 3963 2349c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'NEMO Option - Mobile Network Prefix' 2350c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 6, _mobopttypes), 23515bbe280843fec8d5955914c78f52cb9cef7d61a4Phil ByteField("olen", 18), 2352c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("reserved", 0), 2353c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", 64), 2354c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("prefix", "::") ] 2355c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 4 # alignment requirement: 8n+4 2356c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2357c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptLLAddr(_MIP6OptAlign, Packet): # Sect 6.4.4 of RFC 4068 2358c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 Option - Link-Layer Address (MH-LLA)" 2359c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 7, _mobopttypes), 2360c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 7), 2361c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("ocode", 2, _rfc4068_lla_optcode), 2362c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("pad", 0), 2363c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil MACField("lla", ETHER_ANY) ] # Only support ethernet 2364c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2365c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2366c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptMNID(_MIP6OptAlign, Packet): # RFC 4283 2367c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 Option - Mobile Node Identifier" 2368c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 8, _mobopttypes), 2369c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="id", fmt="B", 2370c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x+1), 2371c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("subtype", 1, {1: "NAI"}), 2372c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("id", "", 2373c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen-1) ] 2374c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2375c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2376c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# We only support decoding and basic build. Automatic HMAC computation is 2377c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# too much work for our current needs. It is left to the user (I mean ... 2378c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# you). --arno 2379c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptMsgAuth(_MIP6OptAlign, Packet): # RFC 4285 (Sect. 5) 2380c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 Option - Mobility Message Authentication" 2381c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 9, _mobopttypes), 2382c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="authdata", fmt="B", 2383c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x+5), 2384c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("subtype", 1, {1: "MN-HA authentication mobility option", 2385c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "MN-AAA authentication mobility option"}), 2386c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("mspi", None), 2387c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("authdata", "A"*12, 2388c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen-5) ] 2389c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 4 ; y = 1 # alignment requirement: 4n+1 2390c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2391c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Extracted from RFC 1305 (NTP) : 2392c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# NTP timestamps are represented as a 64-bit unsigned fixed-point number, 2393c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# in seconds relative to 0h on 1 January 1900. The integer part is in the 2394c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# first 32 bits and the fraction part in the last 32 bits. 2395c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NTPTimestampField(LongField): 2396c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil epoch = (1900, 1, 1, 0, 0, 0, 5, 1, 0) 2397c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 2398c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x < ((50*31536000)<<32): 2399c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "Some date a few decades ago (%d)" % x 2400c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2401c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # delta from epoch (= (1900, 1, 1, 0, 0, 0, 5, 1, 0)) to 2402c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # January 1st 1970 : 2403c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = -2209075761 2404c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil i = int(x >> 32) 2405c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil j = float(x & 0xffffffff) * 2.0**-32 2406c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = i + j + delta 2407c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil from time import strftime 2408c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(res)) 2409c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2410c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%s (%d)" % (t, x) 2411c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2412c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptReplayProtection(_MIP6OptAlign, Packet): # RFC 4285 (Sect. 6) 2413c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Replay Protection" 2414c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 10, _mobopttypes), 2415c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 8), 2416c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NTPTimestampField("timestamp", 0) ] 2417c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 2 # alignment requirement: 8n+2 2418c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2419c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCGAParamsReq(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.6) 2420c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - CGA Parameters Request" 2421c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 11, _mobopttypes), 2422c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 0) ] 2423c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2424c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2425c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# XXX TODO: deal with CGA param fragmentation and build of defragmented 2426c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# XXX version. Passing of a big CGAParam structure should be 2427c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# XXX simplified. Make it hold packets, by the way --arno 2428c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCGAParams(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.1) 2429c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - CGA Parameters" 2430c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 12, _mobopttypes), 2431c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="cgaparams", fmt="B"), 2432c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("cgaparams", "", 2433c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2434c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2435c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2436c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptSignature(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.2) 2437c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Signature" 2438c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 13, _mobopttypes), 2439c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="sig", fmt="B"), 2440c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("sig", "", 2441c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2442c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2443c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2444c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptHomeKeygenToken(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.3) 2445c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Home Keygen Token" 2446c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 14, _mobopttypes), 2447c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="hkt", fmt="B"), 2448c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("hkt", "", 2449c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2450c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2451c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2452c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCareOfTestInit(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.4) 2453c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Care-of Test Init" 2454c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 15, _mobopttypes), 2455c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 0) ] 2456c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2457c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2458c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCareOfTest(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.5) 2459c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Care-of Test" 2460c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 16, _mobopttypes), 2461c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="cokt", fmt="B"), 2462c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("cokt", '\x00'*8, 2463c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2464c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2465c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2466c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptUnknown(_MIP6OptAlign, Packet): 2467c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Scapy6 - Unknown Mobility Option' 2468c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 6, _mobopttypes), 2469c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="odata", fmt="B"), 2470c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("odata", "", 2471c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2472c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2473c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2474c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilmoboptcls = { 0: Pad1, 2475c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: PadN, 2476c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: MIP6OptBRAdvice, 2477c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: MIP6OptAltCoA, 2478c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: MIP6OptNonceIndices, 2479c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: MIP6OptBindingAuthData, 2480c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: MIP6OptMobNetPrefix, 2481c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: MIP6OptLLAddr, 2482c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: MIP6OptMNID, 2483c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: MIP6OptMsgAuth, 2484c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: MIP6OptReplayProtection, 2485c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 11: MIP6OptCGAParamsReq, 2486c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 12: MIP6OptCGAParams, 2487c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 13: MIP6OptSignature, 2488c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14: MIP6OptHomeKeygenToken, 2489c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 15: MIP6OptCareOfTestInit, 2490c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: MIP6OptCareOfTest } 2491c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2492c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2493c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Main Mobile IPv6 Classes 2494c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2495c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilmhtypes = { 0: 'BRR', 2496c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: 'HoTI', 2497c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: 'CoTI', 2498c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: 'HoT', 2499c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: 'CoT', 2500c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: 'BU', 2501c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: 'BA', 2502c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: 'BE', 2503c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: 'Fast BU', 2504c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: 'Fast BA', 2505c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: 'Fast NA' } 2506c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2507c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# From http://www.iana.org/assignments/mobility-parameters 2508c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbastatus = { 0: 'Binding Update accepted', 2509c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: 'Accepted but prefix discovery necessary', 2510c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128: 'Reason unspecified', 2511c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129: 'Administratively prohibited', 2512c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 130: 'Insufficient resources', 2513c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 131: 'Home registration not supported', 2514c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 132: 'Not home subnet', 2515c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 133: 'Not home agent for this mobile node', 2516c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 134: 'Duplicate Address Detection failed', 2517c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 135: 'Sequence number out of window', 2518c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 136: 'Expired home nonce index', 2519c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 137: 'Expired care-of nonce index', 2520c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 138: 'Expired nonces', 2521c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 139: 'Registration type change disallowed', 2522c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 140: 'Mobile Router Operation not permitted', 2523c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 141: 'Invalid Prefix', 2524c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 142: 'Not Authorized for Prefix', 2525c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 143: 'Forwarding Setup failed (prefixes missing)', 2526c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 144: 'MIPV6-ID-MISMATCH', 2527c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 145: 'MIPV6-MESG-ID-REQD', 2528c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 146: 'MIPV6-AUTH-FAIL', 2529c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 147: 'Permanent home keygen token unavailable', 2530c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 148: 'CGA and signature verification failed', 2531c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 149: 'Permanent home keygen token exists', 2532c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 150: 'Non-null home nonce index expected' } 2533c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2534c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2535c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _MobilityHeader(Packet): 2536c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Dummy IPv6 Mobility Header' 2537c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 }} 2538c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2539c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, p, pay): 2540c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p += pay 2541c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.len 2542c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.len is None: 2543c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = (len(p)-8)/8 2544c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = p[0] + struct.pack("B", l) + p[2:] 2545c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.cksum is None: 2546c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cksum = in6_chksum(135, self.underlayer, p) 2547c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2548c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cksum = self.cksum 2549c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = p[:4]+struct.pack("!H", cksum)+p[6:] 2550c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 2551c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2552c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2553c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_Generic(_MobilityHeader): # Mainly for decoding of unknown msg 2554c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Generic Message" 2555c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2556c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2557c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", None, mhtypes), 2558c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2559c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2560c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("msg", "\x00"*2, 2561c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len-6) ] 2562c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2563c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2564c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2565c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: make a generic _OptionsField 2566c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _MobilityOptionsField(PacketListField): 2567c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil islist = 1 2568c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil holds_packet = 1 2569c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2570c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, cls, curpos, count_from=None, length_from=None): 2571c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.curpos = curpos 2572c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil PacketListField.__init__(self, name, default, cls, count_from=count_from, length_from=length_from) 2573c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2574c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 2575c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 2576c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[l:],self.m2i(pkt, s[:l]) 2577c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2578c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 2579c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(self.i2m(pkt, i)) 2580c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2581c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m2i(self, pkt, x): 2582c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt = [] 2583c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while x: 2584c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil o = ord(x[0]) # Option type 2585c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = self.cls 2586c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if moboptcls.has_key(o): 2587c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = moboptcls[o] 2588c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 2589c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = cls(x) 2590c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 2591c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = self.cls(x) 2592c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt.append(op) 25937b3e970663abd72697e17b70aba9943ae0dad404Phil if isinstance(op.payload, conf.raw_layer): 2594c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = op.payload.load 2595c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(op.payload) 2596c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2597c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "" 2598c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return opt 2599c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2600c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 2601c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = None 2602c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 2603c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = getattr(pkt, "autopad") # Hack : 'autopad' phantom field 2604c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 2605c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = 1 2606c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2607c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not autopad: 2608c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "".join(map(str, x)) 2609c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2610c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos = self.curpos 2611c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = "" 2612c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in x: 2613c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = p.alignment_delta(curpos) 2614c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += d 2615c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 2616c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 2617c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 2618c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 2619c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pstr = str(p) 2620c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += len(pstr) 2621c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += pstr 2622c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2623c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Let's make the class including our option field 2624c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a multiple of 8 octets long 2625c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = curpos % 8 2626c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 0: 2627c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 2628c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = 8 - d 2629c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 2630c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 2631c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 2632c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 2633c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2634c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 2635c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2636c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 2637c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s+self.i2m(pkt, val) 2638c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2639c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BRR(_MobilityHeader): 2640c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding Refresh Request" 2641c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2642c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2643c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 0, mhtypes), 2644c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2645c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2646c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res2", None), 2647c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2648c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 8, 2649c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len) ] 2650c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2651c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2652c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Hack: BRR, BU and BA have the same hashret that returns the same 2653c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # value "\x00\x08\x09" (concatenation of mhtypes). This is 2654c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # because we need match BA with BU and BU with BRR. --arno 2655c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "\x00\x08\x09" 2656c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2657c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_HoTI(_MobilityHeader): 2658c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Home Test Init" 2659c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2660c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2661c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 1, mhtypes), 2662c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2663c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2664c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("cookie", "\x00"*8, 8), 2665c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2666c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 16, 2667c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-1)) ] 2668c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2669c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2670c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2671c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2672c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_CoTI(MIP6MH_HoTI): 2673c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Care-of Test Init" 2674c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mhtype = 2 2675c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2676c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2677c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2678c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_HoT(_MobilityHeader): 2679c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Home Test" 2680c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2681c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2682c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 3, mhtypes), 2683c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2684c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2685c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("index", None), 2686c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("cookie", "\x00"*8, 8), 2687c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("token", "\x00"*8, 8), 2688c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2689c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 24, 2690c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-2)) ] 2691c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2692c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2693c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2694c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self): 2695c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(other, MIP6MH_HoTI) and 2696c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.cookie == other.cookie): 2697c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2698c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2699c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2700c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_CoT(MIP6MH_HoT): 2701c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Care-of Test" 2702c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mhtype = 4 2703c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2704c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2705c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2706c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self): 2707c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(other, MIP6MH_CoTI) and 2708c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.cookie == other.cookie): 2709c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2710c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2711c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2712c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass LifetimeField(ShortField): 2713c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 2714c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%d sec" % (4*x) 2715c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2716c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BU(_MobilityHeader): 2717c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding Update" 2718c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2719c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), # unit == 8 bytes (excluding the first 8 bytes) 2720c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 5, mhtypes), 2721c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2722c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2723c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("seq", None), # TODO: ShortNonceField 2724571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil FlagsField("flags", "KHA", 7, "PRMKLHA"), 2725571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil XBitField("reserved", 0, 9), 2726c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil LifetimeField("mhtime", 3), # unit == 4 seconds 2727c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2728c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 12, 2729c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len - 4) ] 2730c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2731c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2732c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): # Hack: see comment in MIP6MH_BRR.hashret() 2733c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "\x00\x08\x09" 2734c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2735c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2736c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(other, MIP6MH_BRR): 2737c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2738c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2739c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2740c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BA(_MobilityHeader): 2741c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding ACK" 2742c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2743c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), # unit == 8 bytes (excluding the first 8 bytes) 2744c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 6, mhtypes), 2745c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2746c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2747c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("status", 0, bastatus), 2748571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil FlagsField("flags", "K", 3, "PRK"), 2749571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil XBitField("res2", None, 5), 2750c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("seq", None), # TODO: ShortNonceField 2751c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("mhtime", 0), # unit == 4 seconds 2752c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2753c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 12, 2754c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len-4) ] 2755c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 }} 2756c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2757c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): # Hack: see comment in MIP6MH_BRR.hashret() 2758c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "\x00\x08\x09" 2759c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2760c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2761c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(other, MIP6MH_BU) and 2762c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil other.mhtype == 5 and 2763c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.mhtype == 6 and 2764c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil other.flags & 0x1 and # Ack request flags is set 2765c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.seq == other.seq): 2766c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2767c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2768c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2769c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_bestatus = { 1: 'Unknown binding for Home Address destination option', 2770c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: 'Unrecognized MH Type value' } 2771c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2772c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: match Binding Error to its stimulus 2773c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BE(_MobilityHeader): 2774c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding Error" 2775c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2776c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), # unit == 8 bytes (excluding the first 8 bytes) 2777c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 7, mhtypes), 2778c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", 0), 2779c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2780c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("status", 0, _bestatus), 2781c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("reserved", 0), 2782c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("ha", "::"), 2783c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 24, 2784c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-2)) ] 2785c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 }} 2786c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2787c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_mip6_mhtype2cls = { 0: MIP6MH_BRR, 2788c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: MIP6MH_HoTI, 2789c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: MIP6MH_CoTI, 2790c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: MIP6MH_HoT, 2791c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: MIP6MH_CoT, 2792c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: MIP6MH_BU, 2793c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: MIP6MH_BA, 2794c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: MIP6MH_BE } 2795c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2796c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2797c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2798c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2799c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Traceroute6 ### 2800c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2801c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2802c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2803c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass AS_resolver6(AS_resolver_riswhois): 2804c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def _resolve_one(self, ip): 2805c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2806c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overloaded version to provide a Whois resolution on the 2807c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil embedded IPv4 address if the address is 6to4 or Teredo. 2808c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Otherwise, the native IPv6 address is passed. 2809c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2810c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2811c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if in6_isaddr6to4(ip): # for 6to4, use embedded @ 2812c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = inet_pton(socket.AF_INET6, ip) 2813c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = inet_ntop(socket.AF_INET, tmp[2:6]) 2814c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif in6_isaddrTeredo(ip): # for Teredo, use mapped address 2815c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = teredoAddrExtractInfo(ip)[2] 2816c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2817c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = ip 2818c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2819c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _, asn, desc = AS_resolver_riswhois._resolve_one(self, addr) 2820c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2821c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return ip,asn,desc 2822c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2823c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass TracerouteResult6(TracerouteResult): 2824c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def show(self): 2825c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.make_table(lambda (s,r): (s.sprintf("%-42s,IPv6.dst%:{TCP:tcp%TCP.dport%}{UDP:udp%UDP.dport%}{ICMPv6EchoRequest:IER}"), # TODO: ICMPv6 ! 2826c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s.hlim, 2827c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r.sprintf("%-42s,IPv6.src% {TCP:%TCP.flags%}"+ 282877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil "{ICMPv6DestUnreach:%ir,type%}{ICMPv6PacketTooBig:%ir,type%}"+ 282977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil "{ICMPv6TimeExceeded:%ir,type%}{ICMPv6ParamProblem:%ir,type%}"+ 283077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil "{ICMPv6EchoReply:%ir,type%}"))) 2831c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2832c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def get_trace(self): 2833c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil trace = {} 2834c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2835c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for s,r in self.res: 2836c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if IPv6 not in s: 2837c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil continue 2838c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = s[IPv6].dst 2839c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d not in trace: 2840c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil trace[d] = {} 2841c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2842c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = not (ICMPv6TimeExceeded in r or 2843c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ICMPv6DestUnreach in r or 2844c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ICMPv6PacketTooBig in r or 2845c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ICMPv6ParamProblem in r) 2846c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2847c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil trace[d][s[IPv6].hlim] = r[IPv6].src, t 2848c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2849c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for k in trace.values(): 2850c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil m = filter(lambda x: k[x][1], k.keys()) 2851c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not m: 2852c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil continue 2853c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil m = min(m) 2854c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for l in k.keys(): 2855c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l > m: 2856c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(k[l]) 2857c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2858c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return trace 2859c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2860c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def graph(self, ASres=AS_resolver6(), **kargs): 2861c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil TracerouteResult.graph(self, ASres=ASres, **kargs) 2862c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2863c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef traceroute6(target, dport=80, minttl=1, maxttl=30, sport=RandShort(), 2864c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l4 = None, timeout=2, verbose=None, **kargs): 2865c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2866c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Instant TCP traceroute using IPv6 : 2867c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil traceroute6(target, [maxttl=30], [dport=80], [sport=80]) -> None 2868c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2869c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if verbose is None: 2870c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil verbose = conf.verb 2871c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2872c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l4 is None: 2873c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a,b = sr(IPv6(dst=target, hlim=(minttl,maxttl))/TCP(seq=RandInt(),sport=sport, dport=dport), 2874c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil timeout=timeout, filter="icmp6 or tcp", verbose=verbose, **kargs) 2875c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2876c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a,b = sr(IPv6(dst=target, hlim=(minttl,maxttl))/l4, 2877c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil timeout=timeout, verbose=verbose, **kargs) 2878c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2879c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a = TracerouteResult6(a.res) 2880c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2881c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if verbose: 2882c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a.display() 2883c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2884c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return a,b 2885c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2886c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2887c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2888c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Sockets ### 2889c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2890c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2891c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2892c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass L3RawSocket6(L3RawSocket): 2893c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, type = ETH_P_IPV6, filter=None, iface=None, promisc=None, nofilter=0): 2894c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil L3RawSocket.__init__(self, type, filter, iface, promisc) 289577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # NOTE: if fragmentation is needed, it will be done by the kernel (RFC 2292) 2896c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.outs = socket.socket(socket.AF_INET6, socket.SOCK_RAW, socket.IPPROTO_RAW) 2897c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.ins = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type)) 2898c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2899c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef IPv6inIP(dst='203.178.135.36', src=None): 2900c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.dst = dst 2901c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.src = src 2902c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not conf.L3socket == _IPv6inIP: 2903c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.cls = conf.L3socket 2904c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2905c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(conf.L3socket) 2906c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _IPv6inIP 2907c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2908c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _IPv6inIP(SuperSocket): 2909c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dst = '127.0.0.1' 2910c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil src = None 2911c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = None 2912c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2913c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, family=socket.AF_INET6, type=socket.SOCK_STREAM, proto=0, **args): 2914c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil SuperSocket.__init__(self, family, type, proto) 2915c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.worker = self.cls(**args) 2916c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2917c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def set(self, dst, src=None): 2918c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.src = src 2919c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.dst = dst 2920c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2921c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def nonblock_recv(self): 2922c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = self.worker.nonblock_recv() 2923c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self._recv(p) 2924c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2925c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def recv(self, x): 2926c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = self.worker.recv(x) 2927c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self._recv(p, x) 2928c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2929c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def _recv(self, p, x=MTU): 2930c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if p is None: 2931c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 2932c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif isinstance(p, IP): 2933c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO: verify checksum 2934c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if p.src == self.dst and p.proto == socket.IPPROTO_IPV6: 2935c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(p.payload, IPv6): 2936c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p.payload 2937c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 2938c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2939c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def send(self, x): 2940c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.worker.send(IP(dst=self.dst, src=self.src, proto=socket.IPPROTO_IPV6)/x) 2941c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2942c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2943c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2944c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2945c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Layers binding ### 2946c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2947c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2948c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2949614f54fc4b269030ba2934b6c353fb43de886e04Philconf.l3types.register(ETH_P_IPV6, IPv6) 2950614f54fc4b269030ba2934b6c353fb43de886e04Philconf.l2types.register(31, IPv6) 2951c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2952c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(Ether, IPv6, type = 0x86dd ) 2953e0602343e528b8c9a53f20a0a40994eb1bb33436rbu@localhost.localdomainbind_layers(CookedLinux, IPv6, proto = 0x86dd ) 2954c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPerror6, TCPerror, nh = socket.IPPROTO_TCP ) 2955c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPerror6, UDPerror, nh = socket.IPPROTO_UDP ) 2956c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPv6, TCP, nh = socket.IPPROTO_TCP ) 2957c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPv6, UDP, nh = socket.IPPROTO_UDP ) 2958c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IP, IPv6, proto = socket.IPPROTO_IPV6 ) 2959c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPv6, IPv6, nh = socket.IPPROTO_IPV6 ) 2960c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2961